DE2559609A1 - DRILLING DEVICE - Google Patents

Description

The invention relates to a drilling device with a frame, a drilling jib carrying a pressure-operated drilling device, a pressure medium-actuated adjustment and maneuvering mechanism that can be rotated relative to the frame about a central longitudinal axis for moving the boom and with lines leading from or through the frame for the passage of work equipment to the Adjustment or maneuvering mechanism and of flushing and working equipment for the drilling device.

Modern drilling devices are equipped with a drilling jib, which is rotatable about an axis running essentially parallel to the longitudinal axis of the drilling device.

This type of drilling jib has certain advantages over other types. Among other things, he's just closed handle and the construction is quite suitable for mechanization and programming of the boom movements «

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In a known embodiment of such a drilling device provided with a rotatable drilling jib the rotary movement is carried out with the aid of hydraulic motors and rack and pinion gears. This has the consequence that the rotational movement is generally limited to 370 to 400 °, i.e. to a little more than one revolution.

Another previously known *; Drilling device is the rotary movement carried out with the help of two hydraulic cylinders arranged at an angle to one another, which with a on the rotating shaft of the boom arranged crank pins are connected. This construction leaves an unlimited Rotational movement, which yodoch can not be used due to the fact that between the fixed frame and the rotating boom pressure lines to Various working fluids are passed through, with the pressure lines limiting the rotary movement.

Unlimited rotation would prove very beneficial. For example, it would be a not insignificant one Result in time savings. The entire borehole could be drilled without additional positional movements the boom must be moved back to a certain starting position when drilling a series of holes is finished and the drilling of a new row of holes is to be started. It also simplifies an unlimited Rotary movement extraordinary the mechanization and programming of the drilling operations.

It is therefore the object of the invention to provide a drilling device of the type mentioned, in which an unlimited rotation of the drilling jib is possible.

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According to the invention, this object is achieved by a cylindrical part which is coaxial with the axis of the frame and forms an axis of rotation for the adjustment and maneuvering mechanism in the frame, and fastening means for the same Mechanism comprising a drive motor via a gearbox with one on the circumference of the cylindrical part seated and part of the gear forming gear is in operative connection and the working and detergent lines lead through the cylindrical part

The further development of the subject matter of the invention emerges from the subclaims.

The unlimited rotational movement of the drilling jib that can be achieved with the device according to the invention is essential Advantages with itself. There are no additional movements of the boom required, for example in a to move certain starting position for drilling boreholes, the latter therefore in any order can be drilled. In addition, the unlimited rotational movement of the drilling jib is for mechanization and Programming the drilling work of great importance. The use of a hydraulic motor with a worm gear transmission for the adjustment and maneuvering mechanism also reduces the overall dimensions of the frame.

An embodiment of the invention is shown in the drawing and is described in more detail below. Show it:

Figure 1 is a side view of the drilling device according to the invention;

FIG. 2 shows a partially sectioned side view of a collector device arranged in the device according to FIG. 1;

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FIG. 3 shows a front view of the collector device in the direction of arrow III - III in FIG. 2j

FIG. 4 shows a front view of the collector device in the direction of arrow IV - IV in FIG. 2;

Figures 5 and 6 are a front view and a side view of the Frame of the device, wherein in Fig. 6 to illustrate the arrangement of the collector device in Frame parts are cut away, and

7 and 8 are views corresponding to FIGS. 5 and 6, wherein the collector device is removed and in Fig. 8 the parts according to Fig. 1 along line VIII VIII are cut away in Fig. 7 to show a gear transmission within the framework of the device.

The drilling device has according to FIG. 1, a frame 2 on a (not shown here) bed, for example a Trolley or the like can be arranged. The frame 2 carries a cylindrical part 4 ending in an annular flange.

An annular disk 8 is screwed to the flange 6 and, with the help of fork-like extensions 10 and 12, carries a cylindrical one Cantilever body 14 which runs parallel to the planes of the flange 6 and the disk 8. On the cylindrical body 14 is a shaft 16 rotatably mounted which forms part of a cantilever arm 18 for a drilling maneuvering or arrangement mechanism of the Forms drilling device. The shaft 16 comprises two shaft ends, each at one end of the cylindrical support body 14 are arranged.

To rotate the shaft 16 of the cantilever arm 18 in the support body 14, a hydraulic drive is arranged on each side of the cantilever arm, from which the cylinder 20 by one to the shaft 16

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parallel bolt 22 is rotatably mounted around and between the two fork-like lateral extensions 24 and 26 of the cantilever arm 18 runs. The piston is similar of the hydraulic drive with its free end on the disc 8 between the fork-like, axially extending Projections 30 and 32 of the disc are rotatably arranged.

The maneuvering or arrangement mechanism arranged on the cantilever arm 18 has two angled ones parallel to one another extending boom 34 on which one end to a bolt 35 are rotatably mounted around.

To clarify the representation, the closest boom is partially cut away in the view according to FIG. 1. At their front ends, the booms rotatably support an element 38 on a bolt 36. A drill feeding machine 40 is slidably disposed on member 38. The feeding machine 40 carries a slide 42 for the drilling device, to which a pneumatically operated drill 44 is attached. A drill steel 46 is shown in dashed lines.

The maneuvering or locating device for the various Arrangement movements of the drill in a plane common to the shaft 16 and the rail 40 can be of conventional type and do not belong to the subject of the invention, which is why they are only briefly described here will. Between the cantilever arm 18 and the kinks of the boom 34 are two parallel, the boom actuating Hydraulic drives 48 for performing a lifting and lowering movement the boom attached. A hydraulic drive 50 extends between the cantilever arms 18 and a pair of joints 52, 54 for pivoting the element 38 about the bolt 36, while a hydraulic drive 56 for Carrying out a sliding movement of the feed rail 40 is arranged on the element 38. With the help of the explained Maneuvering elements it is thus possible

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raise and lower the boom 34 around the bolt 35 around and to arrange the element 38 and thus also the feed rail in relation to the arms 34 at an angle, as well as the To move the feed rail 40 on the element 38. In addition, the cantilever arm 18 and thus also the entire drilling maneuvering mechanism be rotated around the shaft 16, which latter are arranged with the help of the shaft 4 at an angle can.

With the help of the possible movements explained, the Drill 46 can be arranged opposite the frame 2 in any drilling direction. For drilling a series of boreholes, for example in a direction perpendicular to the cylindrical part 4, it is possible to make the holes parallel to one another thanks to the possibility of rotating around the shaft 16.

To rotate the cylindrical part 4, a gear transmission, which is described in more detail below and is driven by a hydraulic motor, is arranged in the frame 2. Operating media such as water and air for the drill as well as hydraulic oil for the corresponding hydraulic cylinders are conducted via a collector unit arranged in the shaft 4. The collector unit has an outer cylindrical stator part 70 and an inner cylindrical stator part 72 coaxial with this, as shown in FIG. A cylindrical rotor part is arranged coaxially between these two stator parts 70, 72. The stator unit 70, 72 carries a fastening plate 76 at one end. A number of channels 78 extend in the axial direction in the stator 72, the inner ends of which are arranged in the stator 72 and are connected to an annular groove 80 in the outer circumferential surface of the stator 72, _{or the like}

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The outer stator 70 has a similar axial extension de, channels 82 opening into the mounting plate 76. The inner ends of the channels 82 are short radial channels 84 in connection with annular grooves 86 formed in the outer circumferential surface of the rotor. The grooves 80, 86 stand via short radial channels (one of which in FIG. 1 is a radial channel 84 is shown) in connection with axially extending channels 90 formed in the rotor body, the latter 2 are open at the left end of the rotor. All ring grooves 80 and 86 have 0-seals on both sides 92 and 94 surround the grooves formed in the outer surface of the inner stator or in the outer surface The rotor formed grooves are arranged and serve as seals for the grooves 80 and 86.

Pipeline fasteners 96 are connected to the inlets of channels 78 and 82. At the exits of the channels 90 are screwed into the rotor connecting tubes 98, the devices 100 at their ends for connection on pipes or hose lines.

A double-walled line with two coaxially extending tubes is arranged in the center of the stator body 72. the Line 102 extends a little beyond both collector sides. The double-walled line 02 forms two Channels for the passage of a fluid, namely an inner channel and a channel between the walls of the tubes. At the At the exit end thereof, the inner tube extends beyond the outer tube. At this end there will be both tubes surrounded by a can 104. The sleeve 104 is opposite to the periphery of the outer tube or inner tube with Sealed with the help of 0-rings 106 and 108. An elbow 110 is connected to the inlet end of the inner tube each has a hose connector 112 at its free end.

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The space between the outer and inner tubes of the double-walled conduit 102 is connected to an elbow 113. The bushing 104 has at its output end threads 114 for connecting an external conduit, which the through the Inner tube absorbs flowing fluid.

In addition, the sleeve 104 has a radially extending elbow tube 116, which has an exit from the outer channel of the double-walled line 102 and ends in a connecting pipe 118. The tube 118 is disc with the help of a locking 120 firmly connected to two of the tubes 98 arranged on each side of the tube 118. At the exit end of the tube 118 is a Hose connector 122 is provided. With the help of the locking disk 120, the rotor liner 104 is connected to the rotor 74 Rotation with this relative to the stator unit firmly connected

The rotor 74 extends at its output end by a certain amount beyond the stator parts 70 and 72. At its periphery, the rotor 74 has an end ring 124 with a recess 126, the function of which follows will be described in more detail.

In the embodiment shown, the corresponding transport lines and channels of the collector serve the following purposes. By means of the fine channels 82 and 78 in the outer and inner stator parts and their outlet pipes 98, hydraulic Liquid intended for the above-described and for the different arrangement movements of the drilling jib hydraulic pressure cylinders transported via two larger-diameter channels 76 » 2, inlet pipes 96 ', an annular outlet channel 80 * in the stator 72 and the corresponding outlet pipe 98 * becomes compressed air for the rotary motor

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of the pneumatically operated drill 44 passed. Via the inner transport channel in the double-walled line 102 and the corresponding inlet pipe 110 and outlet 114 becomes Compressed air for the impact motor of the drill 44 passed. Through the annular space between the walls of the double-walled Conduit 102 and the corresponding inlet pipe 113 and outlet pipe 118 is supplied to the drill 44 with flushing water.

To complete the picture, the inlet connections according to FIG. 4 and the corresponding outlet connections according to FIG Fig. 3 is denoted by the same reference numerals in the form of small letters.

An independent further transport of all pressure medium required for the drilling boom is with the help of the above The collector device described is carried out, the arrangement of which is described in more detail below in frame 2 will.

The arrangement of the collector device in the frame 2 can be seen in particular from FIGS. 5 and 6.

The forming a drive shaft and an annular end flange 6 having cylindrical part 4 is in a through opening in the frame 2 rotatably mounted. the Fastening plate 74 firmly connected to stator parts 70 and 72 is fastened to the frame with the aid of screws 130. The cylindrical part 4 has on its inner circumferential surface an extension 132, which with the im End ring 124 of the collector unit formed recess 126 cooperates, wherein the collector device does not is rotatably connected to the part 4.

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The cylindrical part 4 is set in rotation with the aid of a gear drive described in more detail below, operated by a hydraulic rotary motor 140.

The arrangement of the hydraulic motor 140 and its attachment to the frame 2 can be seen in particular from FIGS. 7 and 8. The hydraulic motor 140 may be of conventional design, which is known in the art and need not be described dah <bicht closer.

which is known to the person skilled in the art and therefore at this point

The output shaft of the hydraulic motor 140 drives a worm wheel. In Fig. 7 this is attached to the frame 2 Worm gear housing 142 is shown. The worm wheel and a gear wheel meshing with it, the housing 144 of which is on the frame 2 is attached, together form a worm drive, which is mounted on the frame 2 and arranged in the worm drive Drive shaft 145 carrying gears. The shaft 145 carries a further gear 146 which meshes with a gear 148 arranged on a shaft 150. The shaft 150 runs parallel to shaft 145 and is rotatably mounted in frame 2. The shaft 150 is supported in bearing caps 152 and 154.

The shaft 150 carries a further gear 156 which meshes at reference number 108 with a gear 162 which is wedged on the shaft 4 with the aid of a key 160. In a practical embodiment, the gear transmission described above has an output torque of 2000 kp m and a total transmission ratio of 835 s 1.

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Claims (4)

-M- Claims \ Λλ Drilling device with a frame, a drilling boom carrying a pressure-medium-actuated drilling device, a pressure-medium-actuated setting or maneuvering mechanism that can be rotated relative to the frame about a central longitudinal axis for moving the boom and with lines leading from or through the frame for the passage of work equipment to the setting or Maneuvering mechanism and flushing and working means for the drilling device, characterized by a cylindrical part (4) which is coaxial with the axis of the frame (2) and forms an axis of rotation for the adjustment and maneuvering mechanism in the frame (2), and fastening means ( 6.8) for this mechanism, a drive motor (140) being in operative connection via a gear (146, 148, 156) with a gear (162) seated on the periphery of the part (4) and forming part of the gear, and the Run the working and flushing agent lines through the part (4). 2. Apparatus according to claim 1, characterized in that the drive motor (140) is a hydraulic motor with a worm wheel is. 3. Device according to claims 1 or 2, characterized in that that the adjustment and maneuvering mechanism is pivotably supported by a pivot axis (16) which is perpendicular to the central longitudinal axis and the pivoting movement of the mechanism is transmitted to the pivot axis. - 12 - INSPECTED 709817/0250 4. Apparatus according to claim 3, characterized in that the pivot axis (16) is carried by the fastening means (6,8) and that in one of the pivot axis (16)
vertical plane hydraulic cylinder (20)
are arranged as a pivot drive between the fastening means (6, 8) and the adjustment and maneuvering mechanism. . H. J ^ resting Häteöiänwalt 709817/0250