JPH06117186A - Excavator for insertion pipe - Google Patents

Abstract

PURPOSE:To miniaturize an excavator for insertion pipes and make the operation easy, by supporting a pushing and drawing device provided with a hydraulic cylinder or the like by a fitting height-adjustable support and changing the fitting position of the support in accordance with the propulsive case and the drawing case of pipes. CONSTITUTION:A pushing and drawing device 5 provided with a hydraulic cylinder 20 or the like is held by a bearing body 2 having a cut-off part 9 to avoid interference with a propulsive pipe (b) at the lower side and a height- adjustable screw 4 and a supporting body 2 comprising a fitting plate 7, a box type receiver 8, etc., and having a height-adjustable screw 12. Next, when pushing the propulsive pipe (b), the supporting body 2 is placed at the opposite side to the excavation side in the oscillation hole (d) and when drawing the pipe, it is placed at the excavation side. After the propulsive pipe (b) is pressurized by the actuated hydraulic cylinder 20, the cylinder 20 is reversely actuated to pull out. In this way, the device is simplified and miniaturized and also the work is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine for intubation used for inserting a propulsion pipe and pulling out the propulsion pipe in the construction work of various pipes buried in the ground.

[0002]

2. Description of the Related Art Conventionally, in the construction work of various pipes buried in the ground, for example, in propulsion of extremely small diameter pipes,
A machine 50 as shown in FIG. 8 is used.

As shown in FIG. 8 (a), this is a hydraulic cylinder 53 mounted on a horizontal bed 52 installed in a starting shaft 51.
The machine body 54 that is advanced and retracted by is mounted slidably,
The propulsion tube 56 is attached to the pressing portion 55 at the front of the machine body 54, and the propulsion tube 56 is inserted into the ground as the machine body 54 advances.

When the propulsion pipe 56 is inserted at a desired point, the propulsion pipe 56 is pulled out from the starting pit 51, and a protective pipe made of polyethylene or vinyl chloride is attached to the end of the propulsion pipe on the arrival pit side to make the propulsion pipe 56. The desired buried pipe was attached by exchanging and inserting by removing 56.

Further, when pulling out the propulsion pipe 56, as shown in FIG. 8 (b), the excavator installed in the starting shaft 51.
Metal fittings 57 connected by a chain to the tip of the airframe 54 in 50
One of them is attached, and the other screw part 58 is screwed into the connecting screw 59 of the propulsion pipe 56, and then the hydraulic cylinder of the propulsion machine 50.
The hydraulic cylinder is pulled by operating 53.
It was pulled out by 53 strokes.

However, since the pulling-out of the propulsion pipe by the above-mentioned device is performed by pulling back the hydraulic cylinder, a sufficient force for pulling out is not transmitted to the propulsion pipe.
Not only does the hydraulic cylinder need a large drive to increase the size and cost of the device, but also the large device requires a large start pit for installation, which requires a large amount of work.

Further, since the connection between the propulsion pipe and the metal fitting is performed by a screw, its operation is troublesome and inconvenient, and in the case of intubation into a solid ground or the like, a large force is required for pulling out due to the compaction applied to the propulsion pipe. This is necessary, and if a large tensile force is applied to counter this force, the threads will be damaged, making it impossible to pull out, and the chain of the metal fitting will be deformed. There were various problems such as.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a substantially vertical pressure receiving portion is provided on one side of the machine body, and the pressure receiving portion is swingable by a rotary shaft. A support body is attached to the pressure-receiving part and the support body, and a height adjusting means for supporting the pressure-receiving portion and the support body at a predetermined height is provided. It is an object of the present invention to provide a cutting machine for intubation that can be easily inserted into and extracted from the ground by a simple operation.

[0009]

Means for Solving the Problems The means of the present invention for achieving the above-mentioned object is a substantially vertical pressure receiving portion provided on one side of a machine body, and is swingably attached to this pressure receiving portion by a rotating shaft. A supporting body having a mounting plate on one side, height adjusting means for supporting the pressure receiving portion and the supporting body at a predetermined height, and pressing means for the propulsion pipe mounted on the supporting body,
It is in the configuration of the incision machine equipped with.

In addition, there is provided a cutting machine for intubation in which a cutting portion for preventing interference with the propulsion pipe is provided below the pressure receiving portion.

[0011]

The present invention configured as described above has the following operations.

In the case of intubation into the ground, the pressure receiving part of the machine body in the machine is contacted with the rear wall in the start pit at the start pit, the height of the body is adjusted by the height adjusting means, and then the pressing means is used. It is gradually propelled when the propulsion pipe is inserted into the ground,
Predetermined intubation to the arrival pit.

When the intubation is completed, the propulsion pipe used for perforation is pulled out from the starting pit, and a protection pipe is attached to the end of the propulsion pipe on the arrival pit side, and the propulsion pipe is replaced and inserted by withdrawing. Is.

When pulling out the propulsion pipe, first,
The front and rear of the machine are reversed, the pressure receiving part of the machine body is brought into contact with the front wall in the starting pit, and the cut-off part of the pressure receiving part is straddled over the propulsion pipe projecting into the starting pit, When the pressing means is linked and a pressing force is applied to the propulsion pipe by the operation of the pressing means, the propulsion pipe is pulled out from the ground, and the protection pipe is drawn into the ground at the reaching pit side.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a cutting machine for intubation according to the present invention will be described with reference to the drawings.

In FIGS. 1 to 3, A is a machine for intubation,
Using a ground drilling device (not shown), in the construction of water supply / drainage equipment accompanying underground burial and in the construction of laying a relatively small diameter buried pipe for telephones, electricity, and gas lamps, reach the propulsion pipe b at the start pit d. It is used for pulling the buried pipe from the reaching resistance e while pulling out the propulsion pipe b from the ground after reaching the reaching resistance while connecting a large number of connecting parts toward the pressure receiving portion of the airframe 1. 2, the support body 3 of the machine body 1, the height adjusting means 4, and the pushing means 5 of the propulsion pipe b are basically configured.

The pressure receiving portion 2 is provided on one side of the machine body 1 and is vertically formed so as to have a large pressure receiving surface that abuts against the wall surface of the starting pit d to support the pressing load. .

The support body 3 has a mounting plate 7 mounted on the front side of the pressure receiving portion 2 so as to be swingable in a horizontal direction by a vertical rotation shaft 6, and the pressing means 5 is mounted on the mounting plate 7. A box-shaped receiving body 8 that is supported is formed horizontally long.

As shown in FIGS. 1 and 2, the pressure receiving portion 2 is provided with a cutout portion 9 whose lower portion is largely curved so that the propulsion tube b is an obstacle when the propulsion tube b is pulled out. The fuselage 1 can be installed in the launch pit d without needing to do so, and the lower portion of the excision portion 9 can be spliced together.
The pressure receiving portion 2 is reinforced by connecting 10 to each other.

The height adjusting means 4 is provided with the pressure receiving portion 2
It is provided on both sides of the support body 3 and the support body 3 to adjust the height of the body 1 to a predetermined level. Screw body 27 for mounting and screw body for mounting on both front sides of the support body 3.
When the vertical screw rods 12, 12, 12, 12 which are screwed to 27 and are rotated by a tool (not shown) hung on the operation portion 13 on the upper portion thereof, the pressure receiving portion 2 and the support body 3 are attached. The height is arbitrarily adjusted.

Further, direction adjusting means 14 for adjusting the orientation of the support 3 is provided at four corners of the mounting plate 7, and the screw body 15 is attached to the mounting plate 7 so as to be attached thereto. When the screw rods 16, 16, 16 and 16 to be screwed are rotated by a tool (not shown) mounted on the operating portion 17 provided at the outer end of the rods, the rotary rods 6 swing freely around the rotary shaft 6. The direction of the support body 3, that is, the pressing means 5 is appropriately adjusted, and in cooperation with the height adjusting means 4, the propulsion direction and angle of the propulsion tube b are accurately adjusted.

As shown in FIG. 4, the propulsion tube b is of a relatively short length of about 280 to 480 mm, and the male and female threads 17 and 18 formed at both ends of the propulsion tube b are screwed in order. It is connected to a desired length, and an external step portion 19 for joining is formed in a bulged manner at the female screw 18 portion.

The pressing means 5 uses a hydraulic cylinder 20 driven by a hydraulic unit (not shown). The end portion is brought into contact with the surface of the mounting plate 7 of the support body 3 to support the cylinder reaction force, and the outer periphery of the hydraulic cylinder 20 is attached by a fixing member 21 such as a chain provided on the support body 3 so as not to deviate. Therefore, at the tip of the rod 22 of the cylinder 20, there is provided a holding member 23 to which a pulling-out device f to be described later is attached.

As shown in FIG. 3 (b), the above-mentioned pulling-out device f pulls out the propelling tubes b after intubation one by one or a plurality of them at a time from the ground. The locking body 26 of the main body 24 and the lifting body 27 attached to the locking body 26 are basically configured.

The above-mentioned main body 24 is the pressing means 5 of the excavator in the ground boring device installed in the starting shaft d.
Attached to the front part of the hydraulic cylinder 20,
It is pressed by a predetermined pressure (about 15 t) by the pressing force of the hydraulic cylinder 20, and is made of metal or the like to be robustly formed, and the top plate 28 and the side plates connected to the top plate 28 and hung vertically on both sides thereof. 29, 29 is formed in a substantially box shape, and a mounting portion 30 with which the tip of the rod 22 of the hydraulic cylinder 20 is engaged is provided on the back portion.

The support portion 25 is provided below the main body 24 to support the lower portion of the propulsion pipe b, and the abutment portion 31 on the upper surface thereof is formed in an arc shape matching the outer shape of the propulsion pipe b. That is, it is laid over the side plates 29, 29 of the main body 24, and is attached separately before and after the side plates 29, 29, or is integrally formed.

The above-mentioned locking body 26 is rotatably attached to one of its bases 32 by the mounting shaft 33 to the side plates 29, 29 so as to correspond to the supporting portion 25 provided on the lower side of the main body 24. The contact portion 34 on the other free end side is supported so as to hang down, and the corresponding contact portion 34 is formed in an arc shape matching the outer shape of the propulsion pipe b. By engaging the portion 34 with the step portion 19 of the propulsion pipe b, the supporting portion 25
And the locking body 26, and it is firmly held and chucked.

The lifting body 27 described above is attached to the base portion 32 of the locking body 26, and is lifted to release the engagement with the lower outer step portion 19.

Further, the contact portion 3 between the support portion 25 and the locking body 26
As shown in FIG. 7, the non-slip members 35 that come into contact with the propulsion pipe b may be attached to the 1, 34, and the propulsion pipe b is processed by roughening the surface. In order to facilitate the replacement of the rough surface portion in the support portion 25, as shown in FIG. 7 (b), Insertion groove
It is detachably attached to 36.

Further, when the thrust tube 36 is mounted in the insertion groove 36, if it is provided so as to be rotatable with respect to the axial direction of the propulsion tube b, the propulsion tube b can be freely engaged with the accommodating tube. Becomes

Next, the operation of the apparatus of the present invention will be described.

When laying a water supply pipe in the ground, for example, as shown in FIG.
The pressure receiving portion 2 is brought into contact with the rear wall in the starting pit d, the body 1 is adjusted by the height adjusting means 4 and the direction adjusting means 14, and then the rod 22 is attached with a front conduit (not shown) for propulsion. When the pipe b is inserted into the ground by the hydraulic cylinder 20, the stroke of the hydraulic cylinder 20, for example, about 280 mm is embedded in one step.

Therefore, since the propulsion pipe b is formed to have this length of 280 mm, the rod 22 of the hydraulic cylinder 20 is retracted to connect the new propulsion pipe b to the previous propulsion pipe b with screws 17, 18 and the like. By repeating the above-described operation in sequence, intubation of a predetermined length is performed until the arrival resistance.

When this intubation is completed, the propulsion pipe b used for perforation is pulled out from the starting pit d, and a protective pipe (not shown) made of polyethylene or vinyl chloride is provided at the end of the propulsion pipe b on the arrival counter side. It is attached and replaced by inserting the propulsion pipe b.

When pulling out the propulsion pipe b, FIG.
First, as shown in (b), reverse the front and back of the machine,
The pressure receiving portion 2 of the fuselage 1 is brought into contact with the front wall in the start pit d,
A propulsion tube b projecting the cut-out portion 9 of the pressure receiving portion 2 into the starting shaft d.
Rod 22 of hydraulic cylinder 20 in the machine
After the mounting portion 30 of the main body 24 is locked and the main body 24 is passed through the outer circumference of the propulsion tube b, the lower surface of the propulsion tube b is supported by the lower support portion 25 and the shaft is attached to the upper part of the main body 24. Suspended locking body 26
When the abutting portion 34 of is engaged with the external step portion 19 of the propulsion pipe b, preparation for withdrawal can be made.

In this state, when the rod 22 of the hydraulic cylinder 20 is extended, the main body attached to the tip of the rod 22
Since 24 is pushed, the abutment portion 34 of the locking body 26 presses the outer step 19 of the propulsion tube b while the propelling tube b is held by the support portion 25 and the locking body 26. While b is pulled out from the ground, the protection tube is pulled into the ground on the arrival side.

Thus, when one portion of the propulsion tube b is pulled out, the lifting body 27 attached to the locking body 26 is pulled up, and the abutting portion 34 of the locking body 26 is brought into the outer step portion of the propulsion tube b. Then, the main body 24 is removed from the propulsion pipe b, and the screws 17 and 18 of the propulsion pipe b are loosened and removed from the intubation row in the ground.

Then, if the main body 24 is replaced with the propulsion pipe b projecting into the next starting pit d and the above-mentioned operation is repeated again in sequence, the propulsion pipe b buried in the ground can be continuously and efficiently withdrawn. It is what is done.

[0039]

As described above, the intubation machine of the present invention can be manufactured in a small size and light weight because of the simple structure of the machine body, the pressing means, and the height adjusting means, and can be easily transported and mounted. It can be installed easily even in a small space starting pit, and sufficient propulsion is demonstrated.

Particularly, in the case of the intubation of the construction method in which the propulsion pipe once buried in the ground is pulled out after reaching, this device can be used for both the steps of inserting and withdrawing the propulsion pipe, and moreover,
Even in the case of tube pulling work in which pulling force is difficult to be applied, the work can be easily performed by pressing the propulsion pipe. It has special effects such as.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a cutting machine for intubation according to the present invention.

2 is a front view of the device in FIG. 1. FIG.

3A and 3B are explanatory views showing an operation state by the device in FIG. 1, in which FIG. 3A shows an intubation state, and FIG. 3B shows a tube withdrawal state.

FIG. 4 is a half sectional view showing an example of a propulsion pipe.

5 is a perspective view showing a propulsion tube drawing device used for the device in FIG. 1. FIG.

6 is a vertical side view of the device in FIG.

7A and 7B show an anti-slip member in the apparatus in FIG. 5, wherein FIG. 7A is an enlarged front view of a main part, and FIG. 7B is an enlarged sectional view.

FIG. 8 is a side view showing a conventional propulsion device.

[Explanation of symbols]

 b Propulsion pipe 1 Airframe 2 Pressure receiving part 3 Support 4 Height adjusting means 5 Pressing means 6 Rotating shaft 7 Mounting plate 9 Cutting part

Claims (2)

[Claims] 1. A substantially vertical pressure receiving portion provided on one side of a machine body, a support body having on one side a mounting plate which is swingably attached to the pressure receiving portion by a rotation shaft, and the pressure receiving portion and the support body. A machine for intubation, comprising height adjusting means provided on the base and supporting them at a predetermined height, and a pushing means for pushing the propulsion pipe mounted on the support. 2. The cutting machine for intubation according to claim 1, further comprising a cutting portion provided below the pressure receiving portion to prevent interference with the propulsion pipe.