WO2016006815A1 - Variable-speed auger with improved drilling efficiency and durability - Google Patents

Abstract

A variable-speed auger with improved drilling efficiency and durability of the present invention is attached to an excavator or a crane to drill a small hole for inserting a telegraph pole or a small or medium pile. The auger comprises: an auger operating part which supplies rotary power for excavation, the auger operating part having a frame attachable to the excavator or the crane; and a drilling part which is attached to the lower part of the auger operating part to directly drill through the ground.

Description

Variable speed auger improves drilling efficiency and durability

The present invention relates to an auger attached to an excavator or a crane and used in a drilling operation for inserting telegraph poles or small and medium-sized piles, and more specifically, using a pole number converting motor or a general electric motor or a hydraulic motor and a deceleration switch. It is possible to change two or four of 10 to 30 RPM required when drilling the small hole by making the primary deceleration unit decelerate or decelerate among the two reduction units. The present invention relates to an auger that improves drilling efficiency and durability that can drill holes efficiently.

In general, modern buildings are increasingly high and large in size, and these high-rise buildings are largely affected by vertical load or wind power by their own weight.

Such a building is constructed as a structure supported by a support pile supported by the ground floor through the ground floor.

As such, the pile construction, which can be essential in the construction of high-rise buildings, is a shock type that directly hits the pile in the ground by hitting it with a driving machine, and drills the excavation hole by rotating an auger and then inside the excavation hole. There is a perforation of the stakes.

Impact pile construction is mainly applied to the construction of hard rock foundations, while perforated pile construction is mainly applied to the construction of soft foundations and is known to have the advantage of preventing the occurrence of noise.

As described above, perforated pile construction applied to the soft ground is drilled to the ground layer so that the support pile can be entered by performing underground excavation work as the auger mounted on the excavating equipment, and after drawing the auger from the drilled excavation hole. By installing the support pile in the excavation hole, it is possible to provide an advantage of preventing the generation of noise during the installation of the ready-made pile.

As described above, the auger is a device for drilling the ground, and is mainly used for civil works for installing piles on the ground.

The specifications of each auger (full length, full width, vertical height, maximum digging depth, minimum / large diameter of the screw, etc.) vary depending on the manufacturer and equipment type, and the approximate drilling depth is as described above. Diameters range from 100mm to 400mm, 450mm, 500mm, 600mm, 800mm, 1000mm, 1200mm, 1500mm and up to 2000mm.

Usually, small pores refer to between 100 and 600 mm, and large pores refer to 800 mm or more.

Normally, 3-10 RPM is required for drilling large holes and 14-30 RPM for drilling small holes.

The types of augers used in civil engineering are as follows.

1) Auger-The former Jeonju Oga used to build power poles (reinforcement of screws) is used nowadays. It refers to excavation small and medium augers for inserting power poles and small and medium piles, and the drilling depth can be up to 9m. .

2) Medium / large augers-Augers that can be attached to excavators or cranes and used for drilling depth fork-lane augers: 17 m or less and crane augers: 25 m or less.

Explaining the application range of each auger (what method is applied), all organs are used for drilling work to insert a file, and the perforated geology is available only in soft ground such as soil, weathered soil, etc. The back is hammered separately.

Since augers require a lot of torque when drilling, the speed change using inverters has a problem such as lack of force and larger motors, resulting in larger gearheads. There was a problem and it was only a matter of converting the speed into two using a pole change motor.

As the number of revolutions applied to the small and large holes is different as above, it is impossible to drill the large and small holes using one auger, and the large and large auger can be separated into small augers and used to drill at only two speeds. It was limited to adjust the speed according to the condition of the ground, so there were many limitations to increase the work efficiency.

'Auger with four speeds' invented by the present inventors is suitable for large-sized drilling work using electric motors and large ones, but problems of size and power for small-sized drilling work to install telegraph poles It is restricted in use, and the deceleration switchgear is installed in the middle, so the structure of the secondary deceleration device is high due to the intermediate gearbox (furenji). Since the planetary gears in the improper fraction form tremble, and the primary deceleration is performed by the deceleration switchgear, the primary sun gear and the input gear are fastened by one body, so there should be no interference with the inner diameter of the primary planet carrier. The outer and inner diameters of the secondary planetary carriers must be large, and the input gears are also enlarged and heavy, so they are free to open and close the deceleration of the primary reduction gear. The issue could not have had a problem with the device is large.

In addition, when the first deceleration is not performed but the first deceleration is performed again, the gear is not easily entered due to the large number of contacts in the process of putting the gears of the input gear, the primary sun gear, the rotating shaft, and the cuffing gear as the deceleration opening and closing. In addition, there was a problem that vibration occurred due to the long axis of rotation, and the 1st reduction ratio was 3.3 to 1, so the deceleration was too much when the 1st, 2nd, and 3rd decelerations were done. Punching had a problem that work efficiency did not rise.

The inventors of the present invention disclose an auger having a large number of planetary reduction ratios, using a hydraulic motor or an electric motor that generates rotational force by using hydraulic pressure supplied from an excavator or a hydraulic device, and a rotating shaft part and an input gear part. Improved, the deceleration switchgear is coupled to the input gear, and when the deceleration switchgear up to the primary deceleration, the rotational force of the rotary shaft is transmitted to the primary sun gear through the coupling gear to perform the primary deceleration, 1 The decelerated rotational force is transmitted to the input gear formed in the rotating shaft portion through the primary planetary carrier and then transferred back to the secondary deceleration unit to perform the second deceleration. The primary sun gear is lowered by lowering the deceleration switch. Is removed from the coupling gear, and the input gear is also removed from the primary planetary gear, so that no rotational force is transmitted to the primary reduction gear. It is transmitted to the gear part and is directly transmitted from the input gear part to the secondary reduction gear, and 2 to 4 speeds are produced. Power is disconnected. When it is transmitted again, the gear is difficult to hold in place and transfers power and chamfers to the disconnected spline. The speed of the auger is changed smoothly, and when the axis is long, some shaking occurs and the first reduction ratio is 3.3 to 1, so the deceleration is too much when the 1st, 2nd, 3rd deceleration is done. Due to the large number of revolutions, there was a problem that the work efficiency did not increase in the small hole perforations for telegraph poles and small and medium-sized piles. In other words, when the 8-pole electric motor or the hydraulic motor of about 900rpm is used, when the 1st, 2nd and 3rd decelerations are out of 7.0rpm and 23.1rpm, the speed is slow and the work efficiency does not increase and the deceleration ratio has many advantages. There was this. In addition, if the gear design is changed and the rotation speed for the 1st, 2nd and 3rd deceleration is increased to about 10rpm, the rotational speed for only the 1st and 2nd decelerations is about 33rpm and the torque is weak, so there is no power and the drilling is good. There was a problem.

The present invention for solving the problems described above to reduce the reduction ratio of the first reduction gear from 3.3 to 2.3 by rotating the ring gear for multi-use to increase the speed of drilling in the drilling operation does not take much load, the third The support bearing is used up and down in the reduction gear to prevent the rotation of the rotating shaft part, and the link part of the reduction gear is put in the reduction gear to prevent oil leakage and improve drilling efficiency and durability. It is to provide auger that can be shifted.

The variable speed auger which improves the drilling efficiency and durability of the present invention is attached to an excavator or a crane, and is used for the drilling of small holes for inserting a telegraph pole or a small-sized file, and a frame that can be attached to the excavator or crane It is composed of auger driving portion provided and to supply a rotational force to excavate, and a drill drill portion attached to the lower portion of the auger driving portion to directly drill the ground.

The auger drive unit is a motor for generating a rotational force by electricity or hydraulic pressure of the excavator or crane; An upper portion is coupled to a rotating shaft of the motor, and a lower portion is coupled to the drilling drill portion, and a deceleration device portion for reducing the rotational speed of the motor to the required number of revolutions of the drilling drill portion; The motor and the reduction gear unit are installed and configured to be attached to the excavator or crane or move, and to form an auger main frame.

The deceleration device unit and the primary deceleration unit for decelerating the rotational speed of the motor primary; A second deceleration unit which decelerates the rotation speed decelerated by the primary deceleration unit; A third deceleration unit which decelerates the rotation speed decelerated by the secondary deceleration unit; A primary deceleration switching device coupled to the primary deceleration unit to decelerate or prevent the primary deceleration unit; It is installed in the upper portion of the primary deceleration unit is sealed to the upper portion of the deceleration device portion and consists of a reduction gear upper casing portion is installed inside the primary deceleration opening and closing device.

The primary deceleration unit and the primary deceleration rotation shaft portion for receiving a rotational force from the rotation axis of the motor; A primary reduction planetary gear unit that rotates in response to a rotational force of the primary reduction rotation shaft unit and includes a primary reduction planetary gear installed in the primary reduction planetary gear carrier; Primary deceleration ring that rotates under the rotational force of the primary deceleration planetary gear to reduce the difference between the deceleration ratio between the first deceleration and the non-deceleration for the purpose of increasing the drilling speed when the first deceleration is performed. A first reduction gear unit including a gear; When performing the first deceleration, it acts as a sun gear of the primary deceleration part to transmit the rotational force of the primary reduction rotation shaft part to the primary reduction planetary gear part and the rotational force transmitted from the primary reduction planetary gear part to the primary reduction ring gear part. Receives and transfers back to the secondary deceleration unit, and when the first deceleration is not carried out consists of a rotational force transmission gear unit for transmitting the rotational force of the primary deceleration rotary shaft portion directly to the secondary deceleration unit.

The secondary deceleration portion has a secondary deceleration rotary shaft portion of the upper side serves to receive the rotational force from the rotational force transmission gear portion and the lower side serves as a sun gear (sun gear) of the secondary deceleration portion; A secondary reduction planetary gear unit including a secondary reduction planetary gear installed in the secondary reduction planetary gear carrier which rotates in response to the rotational force of the secondary reduction rotation shaft unit and transmits the rotational force reduced secondary to the third reduction unit; A secondary reduction planetary gear having a primary reduction planetary gear carrier and a secondary reduction ring gear unit provided at an upper portion thereof, and having a secondary reduction ring gear that is fixed and does not rotate; It consists of a secondary deceleration ring gear that allows rotation between the secondary and secondary deceleration ring gears.

The third reduction gear receives a rotational force that is secondly decelerated in the second reduction planetary gear carrier and is a third reduction gear primary rotation shaft part serving as a sun gear of the third reduction gear; The third reduction gear is rotated by receiving the rotational force in the primary rotation shaft portion, the third reduction planetary gear is rotated under the rotational force in the third reduction primary rotation shaft portion, the third planetary gear carrier is integrated, the third reduction A third deceleration main rotary shaft unit configured to transmit the rotated force to the drilled drill unit connected to the lower portion; A third deceleration portion outer casing in which a fixed deceleration third deceleration ring gear is formed, and the third deceleration planetary gear allows the third deceleration planetary gear to rotate between the third deceleration primary rotation shaft portion and the third deceleration ring gear; A deceleration ring gear portion; It is coupled to the lower portion of the third reduction gear outer casing seals the lower portion of the reduction device portion, and comprises a reduction gear lower casing portion to prevent the shaking of the shaft by wrapping the third reduction main rotation shaft portion.

The primary deceleration rotation shaft portion and the shaft coupling gear for receiving a rotational force from the rotational shaft of the motor and or not to transmit a rotational force to the rotational force transmission gear; The shaft coupling gear is coupled to the upper portion, and the rotational force transmission gear portion is composed of a primary deceleration rotation shaft geared to the outside.

The first reduction gear shaft is formed on the upper portion of the primary reduction shaft and the first spline gear for the gear coupling and the inner spline gear of the shaft coupling gear, the lower portion of the primary reduction shaft when the primary deceleration is not In order to directly transmit the rotational force of the motor to the secondary deceleration portion, a primary deceleration rotary shaft second spline gear is formed to directly transmit the rotational force to the rotational force transmission gear, and the secondary deceleration at the lower end of the primary reduction rotational shaft. In order to install a bearing which is installed to reduce friction when contacting the rotating shaft part, a primary reduction shaft bearing insert having an outer diameter size is formed.

The rotational force transmission gear unit is installed on the upper side, and when coupled with the shaft coupling gear, the primary reduction gear is allowed to decelerate, and when separated from the shaft coupling gear, the upper rotational force transmission to prevent the primary deceleration unit from decelerating. Gears; The lower rotational force transmission gear is installed in the lower portion of the upper rotational force transmission gear and receives the rotational force of the motor when the upper rotational force transmission gear is separated from the shaft coupling gear and transmits the rotational force to the secondary reduction rotation shaft portion.

Between the upper rotational force transmission gear and the lower rotational force transmission gear to grasp the radial load by the shaking of the primary deceleration rotation shaft portion and the secondary deceleration rotation shaft portion, and when the upper rotational force transmission gear and the lower rotational force transmission gear rotates, respectively Two bearings are provided so as not to interfere, and a metal bearing is installed on the lower rotational force transmission gear to reduce friction with the primary reduction shaft during rotation.

A first internal spline gear is formed inside the upper rotational force transmission gear and engages with an external spline gear of the shaft coupling gear, and an outside of the upper rotational force transmission gear is configured to engage with the primary reduction planetary gear. Gears are formed.

In the upper part of the lower rotational force transmission gear, when the primary deceleration is not performed, a coupling with the first reduction rotation shaft second spline gear is performed to transfer the rotational force of the motor directly to the secondary reduction rotation shaft portion through the primary reduction rotation shaft. A second internal spline gear is formed therein, and a third internal spline gear is formed inside the lower rotational force transmission gear for coupling with the secondary reduction rotation shaft portion, and the first external spline gear is formed on the lower outside of the lower rotational force transmission gear. An external spline gear is formed for engagement with the deceleration ring gear.

The secondary deceleration rotation shaft portion and the upper secondary deceleration rotation shaft receives a rotational force from the lower rotational force transmission gear; It consists of a lower secondary deceleration axis of rotation for transmitting a rotational force to the secondary reduction planetary gear.

In the upper center of the upper secondary deceleration shaft, a secondary deceleration bearing installation groove is formed in which the primary deceleration rotation shaft bearing insert is inserted to install a bearing. An upper secondary deceleration shaft external spline gear for gear engagement with the third internal spline gear is formed.

A lower secondary deceleration rotating shaft external gear for transmitting rotational force to the secondary deceleration planetary gear is formed on the upper outside of the lower secondary deceleration rotating shaft, and a lower end of the lower secondary deceleration rotating shaft with the third deceleration rotating shaft portion. In order to install a bearing installed to reduce friction at the time of contact, a secondary reduction shaft bearing insert with an outer diameter size is formed.

The third reduction main rotation shaft portion and a plurality of third reduction planetary gears that receive rotational force from the third reduction primary rotation shaft portion; The third reduction planetary gear is coupled therein, the third planetary gear carrier is integrated, and is formed on the upper portion of the third reduction planetary gear includes a shaft cover for preventing the separation of the third reduction planetary gear, 3 A third reduction main rotation shaft which transmits the differentially reduced rotational force to the drilling drill unit connected to the lower portion; It is composed of a support roller bearing for supporting the third reduction main rotation axis.

A third reduction gear bearing groove is formed in the upper center of the third reduction primary rotation shaft part to insert the secondary reduction rotation shaft bearing insert, and the bearing is installed. A third externally-reduced primary shaft spline gear is formed to be gear-coupled with the secondary-reduced planetary gear carrier to receive the secondly reduced rotational force from the planetary gear carrier.

On the lower outside of the third reduction primary rotation shaft part, a third reduction primary rotation shaft second external spline gear which is geared to the third reduction planetary gear to transmit rotational force to the third reduction planetary gear is formed.

At the lower end of the third reduction primary rotation shaft portion, a third reduction reduction primary rotation shaft bearing insert having an outer diameter is formed to install a bearing installed to reduce friction when contacting the third reduction reduction main rotation shaft.

The third reduction main rotation shaft is formed with a third planetary gear carrier is integrally formed in the upper, the main shaft for transmitting the third reduced rotational force to the drilling drill connected to the lower; It is composed of a shaft cover to prevent the separation by fixing the position of the third reduction planetary gear installed in the upper portion of the main shaft.

The third reduction gear primary rotation shaft bearing insert is inserted into a central upper portion of the main shaft to form a main shaft bearing installation groove in which a bearing is installed, and the third planetary gear carrier is formed at an upper end of the main shaft.

The main shaft has three inlet holes to send cement and compressed air to the lower part of the drilled hole in the state that the main shaft is rotating, the swivel joint bearing can be attached, the hollow shaft center hole The formed swivel joint installation groove is formed, the lower portion of the main shaft is formed with a drill portion coupling hole for coupling the drilling drill portion.

The primary deceleration opening and closing device 24 is coupled to the upper rotational force transmission gear 2141 and the link unit 241 for operating the upper rotational force transmission gear (2141) up and down; It is composed of a cylinder portion 242 that gives a force to operate up and down the link portion 241.

The link part 241 is coupled to the cylinder part 242 and has a pivot that is a fixed point in the center so that the link part can move based on the fixed point by the operation of the cylinder part, and the main link bent at 120 degrees; One end is welded to the main link and the other end is coupled to the upper rotational force transmission gear 2141, and is configured as a sublink for directly operating the upper rotational force transmission gear 2141 by operation of the cylinder portion.

The main lower casing having a lower support roller bearing installed therein, a grand packing preventing leakage of lubricating oil therein, and being coupled to a lower portion of the third reduction gear unit; Even though the main shaft is rotated, the cement and the compressed air can be drawn in, the upper lower bearing is installed at the upper end, and the lower lower bearing is installed at the lower end, and a plurality of inner parts are inserted therein to prevent leakage of the cement and compressed air introduced therein. An swivel joint bearing housing having an O-ring installed therein and coupled to a lower portion of the main lower casing; A grand packing is installed to prevent oil from leaking from the lower lower bearing installed at the upper portion, and is configured as a lower casing cover coupled to the lower portion of the swivel joint bearing housing to block the lower portion.

With the auger capable of shifting to improve the above-mentioned drilling efficiency and durability, the problem to be solved of the present invention can be solved.

According to the auger of the present invention, the drilling speed is improved by reducing the first reduction ratio, and the bearing is used up and down in the third reduction gear and the rotating shaft is separated from each reduction device to shorten the shaft, thereby preventing the shaking of the rotating shaft, and reducing and switching device. It is effective to increase the durability by preventing oil leakage by putting the link part of the inside of the reduction unit.

1 is a partial cross-sectional overall view before and after the first shift according to the auger of the present invention

Figure 2 is an overall view when the first deceleration according to the auger of the present invention

Figure 3 is an overall view when the first deceleration according to the auger of the present invention

Figure 4 is an overall view of the reduction device unit when the first deceleration according to the auger of the present invention

Figure 5 is an overall view of the deceleration unit when not the first deceleration according to the auger of the present invention

6 is a coupling diagram of the primary deceleration unit according to the auger of the present invention

Figure 7 is an exploded view of the first reduction gear according to the auger of the present invention

8 is a simplified plan view of the first reduction unit and the reduction ratio according to the auger of the present invention

9 is a cross-sectional view of the first reduction shaft according to the auger of the present invention

10 is a cross-sectional view of the rotational force transmission gear according to the auger of the present invention

11 is a second deceleration unit coupling diagram according to the auger of the present invention

12 is an exploded view of the secondary deceleration unit according to the auger of the present invention

13 is a simplified plan view of the secondary reduction unit and the reduction ratio according to the auger of the present invention

14 is a cross-sectional view of the secondary deceleration axis of rotation according to the auger of the present invention

15 is a combined view of the third deceleration unit according to the auger of the present invention

16 is an exploded view of the third deceleration unit according to the auger of the present invention

Figure 17 is a simplified plan view of the third reduction unit according to the auger of the present invention and the reduction ratio

18 is a cross-sectional view of the third reduction primary rotational axis according to the auger of the present invention

19 is a cross-sectional view of the third reduction main rotary shaft according to the auger of the present invention;

20 is a cross-sectional view of the third reduction main rotary shaft and the shaft cover according to the auger of the present invention

Figure 21 is an exploded view of the lower casing portion reduction gear according to the auger of the present invention

22 is a schematic view of the primary deceleration switchgear according to the auger of the present invention

* Description of the sign *

A: Auger drive part B: Drilling drill part

1: Motor 2: Reduction Gear

21: primary deceleration portion 211: primary deceleration rotation shaft portion

2111: Shaft Coupling Gear 21111: Internal Spline Gear

21112: external spline gear 2112: primary deceleration shaft

21121: 1st spline gear of 1st reduction gear

21122: 1st reduction gear second spline gear

21123: primary reduction shaft bearing insert

212: primary reduction planetary gear 2121: primary reduction planetary gear

2122: 1st reduction planetary gear carrier 2123: 1st reduction gear casing

213: primary reduction ring gear 2131: primary reduction ring gear

214: torque transmission gear portion 2141: upper torque transmission gear

21411: First internal spline gear 21412: External gear

2142: lower torque transmission gear 21421: second internal spline gear

21422: 3rd internal spline gear 21423: external spline gear

2143: bearing 2144: metal bearing

22: 2nd reduction gear 221: 2nd reduction gear shaft

2211: Upper secondary deceleration shaft 22111: Secondary deceleration bearing mounting groove

22112: Bearing

22113: Upper secondary deceleration shaft external spline gear

2212: Lower secondary deceleration shaft 22121: Lower secondary deceleration shaft

22122: secondary reduction rotary shaft bearing insert 222: secondary reduction planetary gear

2221: 2nd reduction planetary gear 2222: 2nd reduction planetary gear carrier

22221: 2nd reduction planetary gear carrier pin 223: 2nd reduction gear unit

2231: Outer casing of secondary reduction section 22311: Bearing

2232: 2nd reduction gear ring 23: 3rd reduction gear

231: 3rd reduction gear primary rotary shaft 2311: 3rd reduction gear bearing groove

23111: Bearing

2312: 1st external spline gear of 3rd reduction primary rotation axis

2313: 3rd deceleration primary rotating shaft 2nd external spline gear

2314: 3rd deceleration primary rotary shaft bearing insert

232: 3rd reduction main main shaft 2321: 3rd reduction planetary gear

2322: 3rd reduction planetary gear carrier 2323: support roller bearing

2324: 3rd reduction speed main rotary shaft 23241: main shaft

232411: bearing insert 232412: bearing

232413: Swivel joint mounting groove 232414: Shaft center hole

232415: Inlet hole 232416: Drill fittings

23242: Shaft cover 233: 3rd reduction gear unit

2331: 3rd reduction gear external casing 2332: 3rd reduction gear

234: reduction gear lower casing 2323: main lower casing

23411: Grand Packing

2342: swivel joint bearing housing 23421: upper lower bearing

23422: lower lower bearing 23423: O-ring

2343: lower casing cover 23431: grand packing

24: primary deceleration switchgear 241: link portion

2411: Main link 24111: Pivot

24112: Piston Connection Hole

24113: upper torque transmission gear connecting hole 2412: sublink

242: cylinder portion 25: reduction gear upper casing portion

3: auger frame

First, prior to entering the detailed description of the present invention, if it is determined that the detailed description of the known technology or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the terms to be described later are defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user, the operator, and the like according to the present invention. It should be made on the basis of the content throughout this specification that describes "this possible auger".

Hereinafter, a preferred embodiment of the "auger capable of shifting to improve drilling efficiency and durability" according to the present invention will be described in detail.

The following examples are merely illustrated to illustrate the present invention and are not intended to limit the scope of the present invention.

1 is a partial cross-sectional overall view before and after the first shift according to the auger of the present invention, Figure 2 is an overall view when the first deceleration according to the auger of the present invention, Figure 3 is the primary according to the auger of the present invention Figure 4 is an overall view when not deceleration, Figure 4 is an overall view of the deceleration unit portion when the first deceleration according to the auger of the present invention, Figure 5 is a first view when not decelerating according to the auger of the present invention Figure 6 is an overall view of the reduction gear unit, Figure 6 is a first deceleration unit coupling diagram according to the auger of the present invention, Figure 7 is an exploded view of the primary deceleration unit according to the auger of the present invention, Figure 8 is 1 according to the auger of the present invention Figure 9 is a simplified plan view of the deceleration unit and the present state of the reduction ratio, Figure 9 is a cross-sectional view of the primary reduction shaft according to the auger of the present invention, Figure 10 is a cross-sectional view of the rotational force transmission gear according to the auger of the present invention, Figure 11 is auger of the present invention Secondary deceleration unit coupling according to Figure 12 is a secondary according to the auger of the present invention Figure 13 is an exploded view of the reduction unit, Figure 13 is a simplified plan view of the secondary deceleration unit and the reduction ratio ratio according to the auger of the present invention, Figure 14 is a cross-sectional view of the secondary deceleration rotary shaft according to the auger of the present invention, Figure 15 is the auger of the present invention 3 is a third reduction gear coupling according to, Figure 16 is an exploded view of the third reduction gear according to the auger of the present invention, Figure 17 is a simplified plan view of the third reduction gear according to the auger of the present invention and the reduction ratio, Figure 18 is 3 is a cross-sectional view of the third reduction primary rotary shaft according to the auger of the present invention, Figure 19 is a cross-sectional view of the third reduction main rotary shaft according to the auger of the present invention, Figure 20 is a third reduction main main shaft and axle according to the auger of the present invention Cover is a cross-sectional view, Figure 21 is an exploded view of the deceleration device lower casing portion according to the auger of the present invention, Figure 22 is a schematic diagram of the primary deceleration switchgear according to the auger of the present invention.

As shown in FIG. 1, the auger capable of shifting the drilling efficiency and improving the drilling efficiency of the present invention is attached to an excavator or a crane and used for drilling of small holes for inserting telegraph poles or small and medium-sized piles. It comprises a frame attached to the crane and auger driving portion (A) for supplying a rotational force to excavate, and a drill drill portion (B) attached to the lower portion of the auger driving portion (A) to directly drill the ground .

The auger drive unit (A) and the motor (1) for generating a rotational force by electricity or hydraulic pressure of the excavator or crane; The upper part is coupled to the rotating shaft of the motor (1), the lower part is coupled to the drill bit (B), the deceleration to decelerate the rotational speed of the motor (1) to the number of revolutions required for the drill bit (B) An apparatus section 2; The motor 2 and the reduction gear unit 2 are installed and configured to be attached to the excavator or crane, or move, and to form an auger main frame 3 that forms an outline.

Since the drilling drill portion (B) is a known technique, details thereof are omitted in the present invention.

The deceleration unit (2) includes a primary deceleration unit (21) for decelerating the rotational speed of the motor (1) primarily; A secondary deceleration part 22 which decelerates the rotation speed decelerated by the primary deceleration part 21 again; A third deceleration unit 23 which decelerates the rotation speed decelerated by the secondary deceleration unit 22; A primary deceleration switchgear (24) coupled to the primary deceleration unit (21) to allow the primary deceleration unit (21) to decelerate or not to decelerate; It is installed on the upper portion of the primary deceleration portion 21 to seal the upper portion of the reduction device portion 2 and the reduction gear upper casing portion 25, a part of the primary deceleration opening and closing device 24 is installed therein. It is composed.

The left figure of FIG. 1 shows when only the 2nd and 3rd decelerations are performed without making the 1st deceleration, and the right figure shows the 1st secondary and 3rd decelerations.

As shown in Fig. 2 and 3, the auger drive portion (A) has a frame that can be attached to the excavator or crane and serves to supply the rotational force to excavate, to the electric or hydraulic pressure of the excavator or crane A motor 1 for generating a rotational force by the motor; The upper part is coupled to the rotating shaft of the motor (1), the lower part is coupled to the drill bit (B), the deceleration to decelerate the rotational speed of the motor (1) to the number of revolutions required for the drill bit (B) An apparatus section 2; The motor 2 and the reduction gear unit 2 are installed and configured to be attached to the excavator or crane, or move, and to form an auger main frame 3 that forms an outline.

When using an electric motor using electricity, it is possible to produce two revolutions using a pole change motor of 4 poles and 8 poles, and 4 poles and 6 poles. When using, four shifts can be made. When using a hydraulic motor using hydraulics, the hydraulic motor itself is shifted, so at least four shifts can be made when using a hydraulic motor.

As shown in FIGS. 4 and 5, the speed reduction unit 2 has an upper portion coupled to the rotation shaft of the motor 1, and a lower portion coupled to the drilling drill portion B. A primary deceleration unit 21 which serves to decelerate the rotational speed to the rotational speed necessary for the drilling drill part B, and decelerate the rotational speed of the motor 1 by primary; A secondary deceleration part 22 which decelerates the rotation speed decelerated by the primary deceleration part 21 again; A third deceleration unit 23 which decelerates the rotation speed decelerated by the secondary deceleration unit 22; A primary deceleration switchgear (24) coupled to the primary deceleration unit (21) to allow the primary deceleration unit (21) to decelerate or not to decelerate; It is installed on the upper portion of the primary deceleration portion 21 to seal the upper portion of the reduction device portion 2 and the reduction gear upper casing portion 25, a part of the primary deceleration opening and closing device 24 is installed therein. It is composed.

In general, the drilling work for inserting piles is suitable for 24 ~ 30rpm for telegraph poles or small piles and 10 ~ 13rpm for small and medium piles. The deceleration ratio is 3.32 to 1 when decelerating and not decelerating in relation to the arrangement and size of. There is a problem that the work efficiency falls 30% due to only 7 ~ 9rpm, the auger of the present invention is to rotate the ring gear of the primary deceleration unit 21 so that the reduction ratio is 2.32 to 1, secondary and tertiary deceleration When only 24 ~ 30rpm comes out, when the 1st, 2nd and 3rd deceleration is done, the drilling speed is increased to 10 ~ 13rpm to increase the work efficiency.

As shown in FIGS. 6 and 7, the primary deceleration unit 21 includes a primary deceleration rotation shaft unit 211 which receives a rotational force from the rotation shaft of the motor 1; It rotates in response to the rotational force of the primary deceleration rotary shaft 211, and the primary deceleration planetary gear installed in the primary deceleration casing and primary deceleration planetary gear carrier 2122 for coupling with the upper casing portion 25 of the reduction device. A primary reduction planetary gear unit 212 including a 2121; In order to improve the work efficiency by increasing the drilling speed when performing the first deceleration, in order to reduce the difference in the reduction ratio between the first deceleration and the non-deceleration, the first deceleration planetary gear unit 212 rotates in response to the rotational force. A primary deceleration ring gear portion 213 including a differential deceleration ring gear 2131; When performing the first deceleration, it acts as a sun gear of the primary deceleration part 21 to transmit the rotational force of the primary reduction rotation shaft part 211 to the primary reduction planetary gear part 212 and the primary reduction planetary gear part. Receives the rotational force transmitted to the first reduction gear unit 213 at 212 and transmits it to the secondary reduction unit 22, and when the primary reduction is not performed, the primary reduction rotation shaft unit 211 It consists of a rotational force transmission gear portion 214 for transmitting the rotational force directly to the secondary deceleration portion 22.

The primary deceleration part 21 of the present invention improves work efficiency by bringing out the reduction ratio 3.32 to 1 when the primary deceleration ring gear part 213 does not rotate and rotates to 2.32 to 1 when it rotates. In addition, the primary deceleration unit 21 has a primary deceleration rotary shaft 211 to prevent the rotation shaft from long to increase the working speed and durability of the device.

As shown in FIG. 8, the reduction ratio of the primary reduction unit 21 is 38 gears of the upper rotational force transmission gear 2141 of the rotational force transmission gear unit 214 serving as a sun gear, and rotates. The primary reduction gear ring 2131 rotates when the number of gears of the primary deceleration ring gear 2131 is 25 and the number of gears of the primary reduction planetary gear 2121 is 25. It becomes 1.

If the primary deceleration ring gear 2131 is fixed without rotation, it becomes 3.32 to 1 at 88/38 + 1 + 3.32.

As shown in FIG. 9, the primary deceleration rotation shaft part 211 receives a rotation force from the rotation shaft of the motor 1 to the primary reduction planetary gear part 212 through the rotation force transmission gear part 214. Or directly to the secondary deceleration part through the rotational force transmission gear part 214, and receives a rotational force from the rotational shaft of the motor 1 and transmits the rotational force to the rotational force transmission gear part 214. A shaft coupling gear 2111 having an inner spline gear 21111 and an outer spline gear 21112; The shaft coupling gear 2111 is coupled to the upper portion, and the rotational force transmission gear portion 214 is composed of a primary reduction shaft 2112 geared to the outside.

The first deceleration rotating shaft first spline gear 21121 is formed on the upper portion of the primary deceleration rotating shaft 2112 for gear engagement with the internal spline gear 21111 of the shaft coupling gear 2111.

Rotation force directly to the rotational force transmission gear unit 214 to directly transfer the rotational force of the motor 1 to the secondary reduction unit 22 when the primary deceleration is not decelerated in the lower portion of the primary deceleration rotation shaft 2112. The first reduction shaft second spline gear 21122 for transmitting the thrust is formed.

At the lower end of the primary deceleration shaft 2112, a primary deceleration shaft bearing insert portion whose outer diameter is given in order to install a bearing 22112 installed to reduce friction upon contact with the secondary deceleration rotation shaft portion 221 ( 21123 is formed.

As shown in FIG. 10, the rotational force transmission gear part 214 serves as a sun gear of the primary deceleration part 21 when the primary deceleration is performed, and thus the rotational force of the primary deceleration rotation shaft part 211 is measured. It transmits to the primary reduction planetary gear unit 212 and receives the rotational force transmitted from the primary reduction planetary gear unit 212 to the primary reduction ring gear unit 213 and transmits it to the secondary reduction unit 22, 1 When the vehicle does not decelerate, it serves to directly transfer the rotational force of the primary reduction shaft 211 to the secondary reduction unit 22.

The rotational force transmission gear part 214 is installed on the upper side, and when coupled with the shaft coupling gear 2111, allows the primary deceleration part 21 to decelerate and be separated from the shaft coupling gear 2111. When the primary deceleration portion 21 does not decelerate the upper torque transmission gear (2141) and; It is installed in the lower portion of the upper rotational force transmission gear 2141, when the upper rotational force transmission gear 2141 is separated from the shaft coupling gear (2111) receives the rotational force of the motor (1) the secondary deceleration rotation shaft It consists of a lower torque transmission gear 2142 to transfer to the portion 221.

Between the upper rotational force transmission gear (2141) and the lower rotational force transmission gear (2142) to grasp the radial load by the shaking of the primary deceleration rotation shaft portion 211 and the secondary deceleration rotation shaft portion 221, the upper rotation force Two bearings 2143 are provided in two stages so as not to interfere with each other when the transmission gear 2141 and the lower rotational force transmission gear 2142 rotate.

The bearing 2143 is preferably a radial ball bearing type in order to hold a load acting perpendicular to the axis.

The upper portion of the lower rotational force transmission gear 2142 is provided with a metal bearing 2144 to reduce friction with the primary reduction rotation axis 2112 during rotation.

A first internal spline gear 221411 is formed in the upper portion of the upper rotational force transmission gear 2141 to engage with the external spline gear 21112 of the shaft coupling gear 2111.

An outer gear 2214 for gear coupling with the primary reduction planetary gear 2121 is formed outside the upper rotational force transmission gear 2141.

When the primary deceleration is not performed inside the upper portion of the lower rotational force transmission gear 2142, directly transmitting the rotational force of the motor 1 to the secondary reduction rotational shaft part 221 through the primary reduction rotational shaft 2112. To this end, a second internal spline gear 221421 is formed for coupling with the first reduction shaft second spline gear 21122.

A third internal spline gear 21422 is formed in the lower portion of the lower torque transmission gear 2142 for coupling with the secondary reduction rotation shaft portion 221.

An outer spline gear 21423 for coupling with the primary deceleration ring gear is formed at the lower outside of the lower torque transmission gear 2142.

As shown in FIG. 11 and FIG. 12, the secondary deceleration part 22 decelerates the rotation speed decelerated in the primary deceleration part 21 or does not decelerate in the primary deceleration part 21. When it does not serve to reduce the speed by receiving the rotational force of the motor (1).

The secondary deceleration part 22 has an upper side which serves to receive rotational force from the rotational force transmission gear part 214 and a lower side which serves as a sun gear of the secondary deceleration part 22. A part 221; The secondary reduction planetary gear installed in the secondary reduction planetary gear carrier 2222 which rotates in response to the rotational force of the secondary reduction rotation shaft unit 221 and transmits the rotational force reduced by the secondary to the third reduction unit 23 ( A second reduction planetary gear unit 222 including 2221; The primary reduction planetary gear carrier 2122 and the primary reduction ring gear part 213 are installed on the upper portion and includes a secondary reduction portion outer casing 2231 which is formed with a secondary reduction ring gear 2232 which is not fixed and rotated. The secondary reduction planetary gear 2221 is configured as a secondary reduction ring gear unit 223 to rotate between the secondary reduction rotation shaft portion 221 and the secondary reduction ring gear 2232.

As shown in FIG. 13, the reduction ratio of the secondary reduction unit 22 has 12 gears of the lower secondary reduction rotation shaft 2212 serving as a sun gear, and has a fixed secondary reduction ring gear 2232. ), The second reduction gear ring 2232 does not rotate when the number of gears of the gearhead is 66 and the number of gears of the secondary reduction planetary gear 2221 is 27, which is 6.5 to 1 at 88/12 + 1 ≒ 6.5.

As shown in FIG. 14, the secondary reduction rotation shaft unit 221 serves to receive rotational force from the rotational force transmission gear unit 214 and the lower side serves as a sun gear of the secondary reduction unit 22. do.

The secondary deceleration rotation shaft part 221 includes an upper secondary deceleration rotation shaft 2211 receiving a rotational force from the lower rotational force transmission gear; It consists of a lower secondary deceleration rotating shaft 2212 to transmit a rotational force to the secondary reduction planetary gear (2221).

The primary deceleration rotary shaft bearing insert 21123 is inserted into an upper center of the upper secondary deceleration rotating shaft 2211, and a secondary deceleration bearing installing groove 22111 in which the bearing 22112 is installed is formed.

An upper secondary deceleration rotation shaft external spline gear 22113 is formed on the upper outside of the upper secondary deceleration rotation shaft 2211 for gear engagement with a third internal spline gear 2214 of the lower rotation force transmission gear 2142.

A lower secondary deceleration shaft external gear 22121 for transmitting a rotational force to the secondary deceleration planetary gear 2221 is formed outside the upper portion of the lower secondary deceleration rotation shaft 2212.

Secondary deceleration shaft bearing insert portion provided with an outer diameter in order to install a bearing 23111 installed at the lower end of the lower secondary deceleration shaft 2212 to reduce friction during contact with the tertiary deceleration shaft 231. 22122 is formed.

As shown in FIG. 15 and FIG. 16, the third deceleration part 23 serves to reduce the rotation speed decelerated by the second deceleration part 22 again.

The primary deceleration rotation shaft unit 211 receives a rotational force that is secondly decelerated by the secondary reduction planetary gear carrier 2222 and performs a role of sun gear of the tertiary deceleration unit 23. A vehicle rotation shaft portion 231; A third reduction planetary gear (2321) is rotated in response to the rotational force in the third reduction primary rotation shaft portion 231, the rotation is received by the rotation force in the third reduction primary rotation shaft portion 231, a third planetary A third reduction main rotation shaft unit 232 integrated with the gear carrier 2322 and transmitting the third reduced rotational force to the drilling drill unit B connected to the lower portion; And a third reduction gear outer casing 2331 in which a third reduction ring gear 2332 is fixed and does not rotate, and the third reduction planetary gear 2321 is connected to the third reduction primary rotation shaft part 231 and 3. A third deceleration ring gear portion 233 to rotate between the deceleration ring gears 2332; The reduction gear lower casing part coupled to the lower portion of the third reduction gear outer casing 2331 to seal the lower portion of the reduction gear unit 2 and to surround the third reduction main rotating shaft part 232 to prevent shaking of the shaft ( 234).

The reduction device lower casing part 234 is provided with a lower side support roller bearing 2323 therein, a grand packing 23251 for preventing leakage of lubricant therein, and the third reduction gear unit 233 of the reduction gear. The main lower casing (2341) coupled to the lower portion; Even though the main shaft 23241 is rotated, the cement and the compressed air can be introduced therein, and an upper lower bearing 23234 is installed at the upper end, and a lower lower bearing 23222 is installed at the lower end, and the cement and compressed air drawn in are lower. A plurality of O-rings (23433) installed therein to prevent leakage of the swivel joint bearing housing (2342) coupled to the lower portion of the main lower casing (2341); A grand packing 23431 is installed to prevent oil from leaking from the lower lower bearing 23223 installed at an upper portion thereof, and is configured as a lower casing cover 2343 coupled to a lower portion of the swivel joint bearing housing 2432 to block a lower portion thereof. do.

As shown in FIG. 17, the reduction ratio of the third reduction gear 23 has 12 gears of the third reduction primary rotational shaft part 231 serving as a sun gear, and has a fixed third reduction gear. When the number of gears of (2332) is 60 and the number of gears of the third reduction planetary gear 2321 is 24, the third reduction ring gear 2332 does not rotate, resulting in 6 to 1 at 60/12 + 1 = 6.0. .

When the auger of the present invention is the rotational speed of the hydraulic motor is 900rpm or 8-pole electric motor, if the primary reduction ratio 2.32 to 1, the secondary reduction ratio 6.5 to 1, the third reduction ratio 6 to 1 Only 10rpm comes out, and only 2nd and 3rd decelerations come out about 23rpm to improve the proper torque and work efficiency.

As shown in FIG. 18, the third reduction primary rotational shaft unit 231 receives a rotational force reduced second in the secondary reduction planetary gear carrier 2222 and serves as a sun gear of the third reduction reduction unit 23. Do it.

In the upper center of the third reduction primary rotation shaft portion 231, the secondary reduction rotation shaft bearing insertion portion 22122 is inserted to form a third reduction reduction bearing installation groove 2311 in which a bearing 23111 is installed.

The third reduction gear which is gear-coupled with the second reduction planetary gear carrier 2222 to receive the rotational force reduced second from the secondary reduction planetary gear carrier 2222 on the upper outside of the third reduction primary rotation shaft portion 231 The first external spline gear 2312 of the primary rotation shaft is formed.

The third reduction primary rotational shaft gear is coupled to the third reduction planetary gear 2321 in order to transmit a rotational force to the third reduction planetary gear 2321 on the lower outside of the third reduction primary rotation shaft portion 231. Two outer spline gears 2313 are formed.

At the lower end of the third reduction primary rotating shaft portion 231, a third reduction reduction given by an outer diameter in order to install a bearing 232412 installed to reduce friction upon contact with the third reduction reduction main rotation shaft 2324. A differential shaft bearing insert 2314 is formed.

As shown in FIG. 19, the third reduction main rotation shaft 232 is rotated by the rotational force at the third reduction primary rotation shaft 231, and the rotational force at the third reduction primary rotation shaft 231. The third reduction planetary gear (2321) is rotated in response to the built-in, the third planetary gear carrier (2322) is integral, and serves to transmit the third reduced rotational force to the drilling drill (B) connected to the lower portion. .

The third reduction main rotation shaft portion 232 and the third reduction planetary gear (2321) receives a rotational force from the third reduction primary rotation shaft portion 231; The third reduction planetary gear (2321) is coupled to the inside, the third planetary gear carrier (2322) is integral, formed on the third reduction planetary gears to prevent the departure of the third reduction planetary gear The cover 2325 includes a third reduction main rotation shaft 2324 for transmitting the third reduced rotational force to the drilling drill portion (B) connected to the lower portion; It is composed of a support roller bearing (2323) installed in the upper and lower two stages to support the third reduction main rotating shaft (2324).

The support roller bearings 2323 were applied to greatly reduce the shaking of the shaft.

As shown in FIG. 20, the third reduction main rotation shaft 2324 is formed by integrating a third planetary gear carrier 2232 at an upper portion thereof, and punching drill portion B connecting a third reduced rotational force to a lower portion thereof. A main shaft 23241 for transmitting to the main shaft; It consists of a shaft cover (23242) to prevent the separation by fixing the position of the third reduction planetary gear installed on the upper portion of the main shaft.

In the upper portion of the center of the main shaft 23241, the third reduction primary rotation shaft bearing insert 2314 is inserted to form a main shaft bearing installation groove 232411 in which a bearing 232412 is installed.

The third planetary gear carrier 2232 is formed at an upper end of the main shaft 23241.

The main shaft 23241 has three inlet holes 232415 having a diameter of 40 mm to send cement and compressed air to the lower portion of the perforated hole while the main shaft 23241 is rotating, and a swivel joint bearing is attached. And a swivel joint installation groove 232413 having a hollow shaft center hole 232414 formed therein.

The lower portion of the main shaft 23241 is formed with a drill portion coupling hole (232415) for coupling the drilling drill portion (B).

As shown in FIG. 21, the reduction device lower casing part 234 is provided with a lower support roller bearing 2323 therein, and a grand packing 23411 for preventing leakage of lubricant therein is installed. The main lower casing (2341) coupled to the lower portion of the deceleration ring gear portion (233); Even though the main shaft 23241 is rotated, the cement and the compressed air can be introduced therein, and an upper lower bearing 23234 is installed at the upper end, and a lower lower bearing 23222 is installed at the lower end, and the cement and compressed air drawn in are lower. A plurality of O-rings (23433) installed therein to prevent leakage of the swivel joint bearing housing (2342) coupled to the lower portion of the main lower casing (2341); A grand packing 23431 is installed to prevent oil from leaking from the lower lower bearing 23223 installed at an upper portion thereof, and is configured as a lower casing cover 2343 coupled to a lower portion of the swivel joint bearing housing 2432 to block a lower portion thereof. do.

As illustrated in FIG. 22, the primary deceleration switching device 24 is coupled to the primary deceleration unit 21 and serves to prevent or decelerate the primary deceleration unit 21. A link unit 241 coupled to the upper rotational force transmission gear 2141 for operating the upper rotational force transmission gear 2141 up and down; It is composed of a cylinder portion 242 that gives a force to operate up and down the link portion 241 by the movement of the piston.

The link portion 241 is coupled to the cylinder portion 242, and the pivot 24111 is a fixed point in the center to move the link portion relative to the fixed point by the operation of the cylinder portion, the main bent 120 degrees A link 2411; One end is welded to the main link 2411 and the other end is coupled to the upper torque transmission gear 2141 to operate the upper torque transmission gear 2141 directly by the operation of the cylinder portion 242 ( 2412).

22-1 shows that the first internal spline gear 221411 of the upper rotational force transmission gear 2141 is lifted up to the external spline gear 21112 of the shaft coupling gear 2111. Fig. 22-2 shows the operating state when engaged, and the rotational force transmission gear 214 is lowered to the outer spline gear 21112 of the shaft coupling gear 2111 of the upper rotational force transmission gear 2141. The operating state when the first internal spline gear 21411 is pulled out is shown.

The primary deceleration opening and closing device 24 according to the present invention is installed inside the deceleration device upper casing part 25 except for a portion of the cylinder part 242 as well as the link part 241. There is no leakage of oil in the cylinder, and the cylinder part 242 may push the piston by hydraulic pressure, or may push the piston by using an electric motor and a linear gear.

According to the auger of the present invention, the drilling speed is improved by reducing the first reduction ratio, and the bearing is used up and down in the third reduction gear and the rotating shaft is separated from each reduction device to shorten the shaft, thereby preventing the shaking of the rotating shaft, and reducing and switching device. It is effective to increase the durability by preventing oil leakage by putting the link part of the inside of the reduction unit.

Claims (4)

In the auger attached to an excavator or crane and used for drilling work for inserting telegraph poles or small and medium piles, The auger is provided with a frame that can be attached to the excavator or crane, the auger driving unit (A) for supplying the rotational force to excavate, and a drill drill unit for attaching the lower portion of the auger driving unit (A) to directly drill the ground ( B), The auger drive unit (A) and the motor (1) for generating a rotational force by electricity or hydraulic pressure of the excavator or crane; The upper part is coupled to the rotating shaft of the motor (1), the lower part is coupled to the drill bit (B), the deceleration to decelerate the rotational speed of the motor (1) to the number of revolutions required for the drill bit (B) An apparatus section 2; The motor 1 and the reduction gear unit 2 are installed and made of an auger main frame 3 which is attached or moved to the excavator or crane and forms an outline. The deceleration unit (2) includes a primary deceleration unit (21) for decelerating the rotational speed of the motor (1) primarily; A secondary deceleration part 22 which decelerates the rotation speed decelerated by the primary deceleration part 21 again; A third deceleration unit 23 which decelerates the rotation speed decelerated by the secondary deceleration unit 22; A primary deceleration switchgear (24) coupled to the primary deceleration unit (21) to allow the primary deceleration unit (21) to decelerate or not to decelerate; It is installed on the upper portion of the primary deceleration portion 21 to seal the upper portion of the reduction device portion 2 and the reduction gear upper casing portion 25, a part of the primary deceleration opening and closing device 24 is installed therein. Composed, The primary deceleration unit 21 includes a primary deceleration rotation shaft unit 211 which receives a rotational force from the rotation shaft of the motor 1; It rotates in response to the rotational force of the primary deceleration rotary shaft 211, and the primary deceleration planetary gear installed in the primary deceleration casing and primary deceleration planetary gear carrier 2122 for coupling with the upper casing portion 25 of the reduction device. A primary reduction planetary gear unit 212 including a 2121; In order to improve the work efficiency by increasing the drilling speed when performing the first deceleration, in order to reduce the difference in the reduction ratio between the first deceleration and the non-deceleration, the first deceleration planetary gear unit 212 rotates in response to the rotational force. A primary deceleration ring gear portion 213 including a differential deceleration ring gear 2131; When the primary deceleration is performed, it acts as a sun gear of the primary deceleration part 21 to transmit the rotational force of the primary deceleration rotation shaft part 211 to the primary deceleration planetary gear part 212. Receives the rotational force transmitted from the differential reduction planetary gear unit 212 to the primary reduction ring gear unit 213 and transfers it to the secondary reduction unit 22. When the primary reduction is not performed, the primary reduction rotation shaft unit Consists of the rotational force transmission gear portion 214 for directly transmitting the rotational force of the 211 to the secondary deceleration portion 22, The secondary deceleration part 22 has an upper side which serves to receive rotational force from the rotational force transmission gear part 214 and a lower side which serves as a sun gear of the secondary deceleration part 22. A part 221; The secondary reduction planetary gear installed in the secondary reduction planetary gear carrier 2222 which rotates in response to the rotational force of the secondary reduction rotation shaft unit 221 and transmits the rotational force reduced by the secondary to the third reduction unit 23 ( A second reduction planetary gear unit 222 including 2221; The primary reduction planetary gear carrier 2122 and the primary reduction ring gear part 213 are installed on the upper portion and includes a secondary reduction portion outer casing 2231 which is formed with a secondary reduction ring gear 2232 which is not fixed and rotated. And the secondary reduction planetary gear 2221 may rotate between the secondary reduction rotation shaft portion 221 and the secondary reduction ring gear 2232, and the secondary reduction reduction gear unit 223. The tertiary deceleration unit 23 receives the rotational force that is secondarily decelerated by the secondary deceleration planetary gear carrier 2222 and is the tertiary deceleration primary that serves as a sun gear of the tertiary deceleration unit 23. A rotating shaft portion 231; A third reduction planetary gear (2321) is rotated in response to the rotational force in the third reduction primary rotation shaft portion 231, the rotation is received by the rotation force in the third reduction primary rotation shaft portion 231, a third planetary A third reduction main rotation shaft unit 232 integrated with the gear carrier 2322 and transmitting the third reduced rotational force to the drilling drill unit B connected to the lower portion; And a third reduction gear outer casing 2331 in which a third reduction ring gear 2332 is fixed and does not rotate, and the third reduction planetary gear 2321 is connected to the third reduction primary rotation shaft part 231 and 3. A third deceleration ring gear portion 233 to rotate between the deceleration ring gears 2332; The reduction gear lower casing part coupled to the lower portion of the third reduction gear outer casing 2331 to seal the lower portion of the reduction gear unit 2 and to surround the third reduction main rotating shaft part 232 to prevent shaking of the shaft ( 234) Auger with variable speed for improved drilling efficiency and durability The method of claim 1, The primary deceleration rotation shaft portion 211 is a shaft coupling gear (2111) for receiving a rotational force from the rotational shaft of the motor (1) and transmit or not a rotational force to the rotational force transmission gear portion (214); The shaft coupling gear 2111 is coupled to the upper portion, and the rotational force transmission gear portion 214 is composed of a primary deceleration rotation shaft 2112 geared to the outside, The rotational force transmission gear part 214 is installed on the upper side, and when coupled with the shaft coupling gear 2111, allows the primary deceleration part 21 to decelerate and be separated from the shaft coupling gear 2111. When the primary deceleration portion 21 does not decelerate the upper torque transmission gear (2141) and; It is installed in the lower portion of the upper rotational force transmission gear 2141, when the upper rotational force transmission gear 2141 is separated from the shaft coupling gear (2111) receives the rotational force of the motor (1) the secondary deceleration rotation shaft Consists of a lower torque transmission gear 2142 to transfer to the portion 221, Between the upper rotational force transmission gear (2141) and the lower rotational force transmission gear (2142) to grasp the radial load by the shaking of the primary deceleration rotation shaft portion 211 and the secondary deceleration rotation shaft portion 221, the upper rotation force Two bearings 2143 are provided which do not interfere with each other when the transmission gear 2141 and the lower torque transmission gear 2142 rotate, respectively. The upper portion of the lower rotational force transmission gear 2142 is provided with a metal bearing 2144 for reducing friction with the primary reduction shaft 2112 during rotation, The secondary deceleration rotation shaft part 221 includes an upper secondary deceleration rotation shaft 2211 receiving a rotational force from the lower rotational force transmission gear; It is composed of a lower secondary deceleration shaft 2212 for transmitting a rotational force to the secondary deceleration planetary gear 2221, The third reduction main rotation shaft portion 232 and the third reduction planetary gear (2321) receives a rotational force from the third reduction primary rotation shaft portion 231; The third reduction planetary gear (2321) is coupled to the inside, the third planetary gear carrier (2322) is integral, formed on the third reduction planetary gears to prevent the departure of the third reduction planetary gear The cover 2325 includes a third reduction main rotation shaft 2324 for transmitting the third reduced rotational force to the drilling drill portion (B) connected to the lower portion; The auger capable of shifting to improve drilling efficiency and durability, characterized in that the structure consisting of a support roller bearing (2323) for supporting the third reduction main rotating shaft (2324) The method of claim 2, The first deceleration rotation shaft first spline gear 21121 for gear coupling with the inner spline gear 21111 of the shaft coupling gear 2111 is formed on the upper portion of the primary reduction rotation shaft 2112, Rotation force directly to the rotational force transmission gear part 214 in order to transfer the rotational force of the motor 1 directly to the secondary deceleration part 22 when the primary deceleration is not performed on the lower portion of the primary deceleration rotation shaft 2112. The first reduction gear shaft second spline gear 21122 for transmitting the At the lower end of the primary reduction shaft 2112, a primary reduction shaft bearing insert having an outer diameter size is provided to install a bearing 22112 installed to reduce friction upon contact with the secondary reduction shaft 221. 21123), A first internal spline gear 221411 is formed in the upper portion of the upper rotational force transmission gear 2141 and engages with an external spline gear 21112 of the shaft coupling gear 2111. An outer gear 2214 for gear coupling with the primary reduction planetary gear 2121 is formed outside the upper rotational force transmission gear 2141, When the primary deceleration is not performed inside the upper portion of the lower rotational force transmission gear 2142, directly transmitting the rotational force of the motor 1 to the secondary reduction rotational shaft part 221 through the primary reduction rotational shaft 2112. A second internal spline gear (21421) for coupling with the first reduction shaft second spline gear (21122) is formed for A third internal spline gear (21422) is formed in the lower portion of the lower torque transmission gear (2142) for coupling with the secondary reduction rotation shaft portion (221), An outer spline gear 21423 for coupling with the primary deceleration ring gear is formed at the lower outside of the lower torque transmission gear 2142. In the upper center of the upper secondary deceleration rotation shaft 2211, the secondary deceleration rotation shaft bearing insertion portion 21123 is inserted to form a secondary deceleration bearing installation groove 22111 in which the bearing 22112 is installed. An upper secondary deceleration rotation shaft external spline gear 22113 is formed on the upper outside of the upper secondary deceleration rotation shaft 2211 for gear engagement with a third internal spline gear 2214 of the lower rotation force transmission gear 2142. A lower secondary deceleration shaft external gear 22121 for transmitting a rotational force to the secondary deceleration planetary gear 2221 is formed at an upper outside of the lower secondary deceleration rotation shaft 2212. Secondary deceleration shaft bearing insert portion provided with an outer diameter in order to install a bearing 23111 installed at the lower end of the lower secondary deceleration shaft 2212 to reduce friction during contact with the tertiary deceleration shaft 231. (22122) is formed, In the upper center of the third reduction primary rotation shaft portion 231, the secondary reduction rotation shaft bearing insertion portion 22122 is inserted to form a third reduction reduction bearing installation groove 2311 in which a bearing 23111 is installed. The third reduction gear which is gear-coupled with the second reduction planetary gear carrier 2222 to receive the rotational force reduced second from the secondary reduction planetary gear carrier 2222 on the upper outside of the third reduction primary rotation shaft portion 231 The first outer spline gear 2312 of the primary rotation shaft is formed, The third reduction primary rotational shaft gear is coupled to the third reduction planetary gear 2321 in order to transmit a rotational force to the third reduction planetary gear 2321 on the lower outside of the third reduction primary rotation shaft portion 231. 2 external spline gear 2313 is formed, At the lower end of the third reduction primary rotating shaft portion 231, a third reduction reduction given by an outer diameter in order to install a bearing 232412 installed to reduce friction upon contact with the third reduction reduction main rotation shaft 2324. A secondary shaft bearing insert 2314 is formed, The third reduction main rotation shaft 2324 is formed of a third planetary gear carrier 2232 is integrally formed at the top, the main shaft 23241 for transmitting the third reduced rotational force to the drilling drill (B) connected to the lower portion and; It consists of a shaft cover (23242) to prevent the separation by fixing the position of the third reduction planetary gear is installed on the upper portion of the main shaft, The main shaft bearing installation groove 232411 is formed in the center upper portion of the main shaft 23241, the third reduction primary rotary shaft bearing insert 2314 is inserted to install the bearing 232412, The tertiary planetary gear carrier 2232 is formed at an upper end of the main shaft 23241, The main shaft 23241 has three inlet holes 232415 to send cement and compressed air to the lower portion of the perforated hole in the state in which the main shaft 23241 is rotating, so that the swivel joint bearing can be attached. A swivel joint installation groove 232413 having a hollow shaft center hole 232414 is formed therein. The lower portion of the main shaft 23241 is formed with a drill portion coupling hole (232415) for coupling the drilling drill portion (B), The reduction device lower casing part 234 is provided with a lower side support roller bearing 2323 therein, a grand packing 23251 for preventing leakage of lubricant therein, and the third reduction gear unit 233 of the reduction gear. The main lower casing (2341) coupled to the lower portion; Even though the main shaft 23241 is rotated, the cement and the compressed air can be introduced therein, and an upper lower bearing 23234 is installed at the upper end, and a lower lower bearing 23222 is installed at the lower end, and the cement and compressed air drawn in are lower. A plurality of O-rings (23433) installed therein to prevent leakage of the swivel joint bearing housing (2342) coupled to the lower portion of the main lower casing (2341); A grand packing 23431 is installed to prevent oil from leaking from the lower lower bearing 23223 installed at an upper portion thereof, and is configured as a lower casing cover 2343 coupled to a lower portion of the swivel joint bearing housing 2432 to block a lower portion thereof. Auger capable of shifting to improve drilling efficiency and durability, characterized in that the structure The method of claim 2, The primary deceleration opening and closing device 24 is coupled to the upper rotational force transmission gear 2141 and the link unit 241 for operating the upper rotational force transmission gear (2141) up and down; It is composed of a cylinder portion 242 that gives a force to operate up and down the link portion 241 by the movement of the piston, The link portion 241 is coupled to the cylinder portion 242, and the pivot 24111 is a fixed point in the center to move the link portion relative to the fixed point by the operation of the cylinder portion, the main bent 120 degrees A link 2411; One end is welded to the main link 2411 and the other end is coupled to the upper torque transmission gear 2141 to operate the upper torque transmission gear 2141 directly by the operation of the cylinder portion 242 ( Auger capable of shifting with improved drilling efficiency and durability, characterized in that the structure consists of 2412)

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