JPS6294687A - Drilling machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industry - Field of Application> The present invention is mainly used for drilling holes in tunnels, or for extracting cylindrical test pieces from tunnel surfaces. It is related to.

<Prior art> As is well known, a conventional drilling machine for taking a cylindrical test piece is equipped with a rotary drive mechanism for rotating the spindle on a movable frame with wheels, and a rotary drive mechanism for rotating the spindle is installed inside the spindle. Most have a cutting bit attached to the tip of the inserted rod.

<Problems to be solved by the invention> Since the above-mentioned conventional drilling machine cannot freely change the direction of the spindle, it is difficult to take a test piece from a desired part such as a burr or diagonally upward on a tunnel wall surface. It was very difficult to do so. In addition, since the loft was simply moved within the spindle, it was not possible to take a long stroke of the cutting focus.

<Step F for solving the problem> The present invention was proposed in view of the above, and is a portable and mobile device.
The L body F is provided with a rotary pressing mechanism equipped with a rotary drive machine that moves along a long slide guide, and a rotary shaft with a cutting bit attached to the tip is connected to the rotary drive machine.

In addition, to the movable Iij body 1-, (a support frame whose end is pivotally connected) and a first support frame whose one end is pivotally connected in the middle of the length of the support frame and whose other end is pivotally connected to the vehicle body side. A turning mechanism having at least a cylinder and a second cylinder whose end is pivoted 71' between the pivoting part of the support frame to which the first cylinder is pivoted and the free end of the support frame is provided, A rotary pressing mechanism equipped with a rotary drive machine that moves along a sliding guide is connected to the free end of the support frame of the L turning mechanism and the other end of the second cylinder, and a cutting bit is attached to the tip of the rotary pressing mechanism. The shaft is connected to the rotary drive machine (1).

<Function> With the above-described configuration, the present invention can send out the νJ cutting bit straightly and with a long stroke by moving the one-rotation drive machine along the slide guide.

In addition, the direction of the slide guide can be adjusted by appropriately adjusting the expansion and contraction length of the opening and closing of the first and second cylinders. /J cut hints can be sent in the desired direction.

<Example> Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

As shown in FIG. 1, the hole drilling machine 1 has a rotating base 4 mounted on a vehicle body 3 having wheels 2 so as to be rotatable in the horizontal direction,
A turning mechanism 5 is provided on the rotating base 4, and a rotating pressing mechanism 7 for rotating the cutting bit 6 is provided on the turning mechanism 57,
A storage battery 9 mounted on a power supply vehicle 8 connected to the vehicle body 3...
The hydraulic unit 11O is operated by electricity from the hydraulic unit 10, and each mechanism is driven by hydraulic pressure from the hydraulic unit 10.

The vehicle body 3 has exterior panels attached to a frame made of angle materials, channel steel materials, etc., and is equipped with a traveling mechanism 11.11 consisting of a hydraulic motor and a speed reducer inside. Therefore, electric power is supplied to the traveling mechanism 1 from the storage battery 9 of the power supply vehicle 8 connected to the detachment rotation by the coupling device 12.
1.11, the traveling mechanism 11.11 is activated to rotationally drive the wheels 2, and the vehicle body 3 moves on its own. In addition,
The configuration for changing the running direction of the vehicle body 3 may be such that the front wheels or the rear wheels have a steering angle, or the 11 wheels on the right side and the -1 wheel on the left side (so that the rotation direction of the wheels can be reversed) are used. 11. A base rotation mechanism 14 composed of a hydraulic motor and a speed reducer for rotationally driving a pinion gear 13 protruding from the L side of the vehicle body 3 is mounted on the PS approximately in the center of the body 3. be.

The rotating base 4 provided on the car body 3F- is in the form of a platform deck, with floor panels and exterior panels attached to a frame made of angle materials, channel steel, etc. A large sparkle 15 that meshes with the gear 13 is fixed. therefore,! 1 (Rotates when the pinion gear 13 on the body 3 side is rotated and the spur gear 15 rotates at a low speed), (The platform 4 rotates at a low speed toward the surface of the water and rotates regardless of the direction of the vehicle body 3), (The platform 4 rotates as desired) can be directed in the direction of

Note that the mechanism for rotating the base 4 is not limited to the combination of the L pinning gear 13 and the spur gear 15, but may be of any configuration as long as it can rotate the base 4 once.

The turning mechanism 5 provided on the rotating base 4 is constructed by connecting two hollow wooden frame members as appropriate to form a support frame 16, and is erected on the front part of the upper surface of the rotating base 4 (on the left side in FIG. 1). The wide V-shaped base end portion of the support frame 16 was rotatably attached to the front support stay 17 by a shaft, and the support frame 16 was erected on the rear side of the upper surface of the rotating base 4 (on the right side in FIG. 1). The end of the cylinder body of the first cylinder 19 is rotatably attached to the rear support stay 18 by a shaft, and the end of the rod 19' of the first cylinder 19 is attached to the support frame 1.
The support frame 16 is rotatably attached to a shaft in the middle of the length of the
The cylinder main body end of the second cylinder 20 is rotatably pivoted to the free end side of the cylinder. Then, the rotary pressing mechanism 7 is pivotally attached to the free end of the support frame 16 and the tip of the rod 20' of the second cylinder 20.

The rotary pressing mechanism 7 shown in FIG. 1 is equipped with a tilt mechanism that is rotatable with respect to the turning mechanism 5.
1 (Fj1'1i in Figure 1); y
Each protruding receiving part 22 is attached to the free end side of the support frame 16 and the tip of the rod 20' of the second cylinder 20, Each connecting part 23 protruding from the tilt board 24 is pivoted to each connecting part 25 of the tilt board 24 so as to be able to rotate ζiI, The rod of the cylinder 26 is pivoted to the side end of the tilt ff121.A slide support i27.27 having an opposing U-shaped IM is provided at the edge of the tilt ff121, and the rod is slid into the groove. The guide 28 is supported through the movement Of fE, and the tip of the slot 29' of the slide cylinder 29 fixed to the side of the slide support section 27 is attached to the stay 30 of the slide guide 28 on the axis Ii.Slide guide 28 is a structure in which two long H-beams placed parallel to each other are connected by a cross member with a suitable distance between them.
is loosely fitted into the U-shaped groove of the slide support part 27 described in 1-, and the rotary drive unit 33 is moved by the other flange part 32 (I+). A zero-rotation drive machine 33 that moves the rotation drive machine 33
The slide base 35 has opposing U-shaped grooves,
A reducer 37 with a hydraulic motor 36 is provided as a drive source,
A cylindrical rotating shaft connecting member 39 formed with a screw thread is attached to the output shaft 38 of the reducer extending along the length direction of the slide guide 28, and the slide guide 28 is inserted into the groove of the slide base 35. The flange portion 32 is loosely fitted.

As shown in FIG. 4, the feed mechanism 34 for moving the rotary drive machine 33 has a first sprocket 40 and a second sprocket 41 rotatably mounted on each end of the slide guide 28, and A feed cylinder 42 is disposed between the sprocket 40 and the second sprocket 41 along the length direction of the slide guide 28, and the third sprocket 44 and The fourth sprocket 45 is arranged along the length of the slide guide 28 and is pivoted. And slide base 3
The first chain 46, which has one end connected to the front part of
After the first chain 46 is hooked on the third sprocket 44 and the direction is changed again, the other end of the first chain 46 is connected to one end of the slide guide 28. Further, the second chain 47, whose one end is connected to the rear part of the slide base 35, is hooked to the second sprocket 41 to change the direction, and a part of the second chain 47 is hooked to the fourth sprocket 45 to change the direction again. , the other end of the second chain 47 is connected to the other end of the slide guide 28. The lengths of the first chain 46 and the second chain 47 are set so that the slide guide 35 is located at the rear end of the slide guide 28 when the feed cylinder 42 is in the shortest position, as shown in FIG. It is set. Therefore, when the rod 42' of the feed cylinder 42 is gradually extended from the state shown in FIG. 4, the third sprocket 44 can pull the slide base 35 in the direction of the arrow in FIG. 4 via the first chain 46, causing rotation. The drive machine 33 can be moved around. Note that when the rotary drive fi33 moves forward, the second
Since the end of the chain 47 is pulled by the slide base 35, even if the fourth sprocket 45 moves in the direction of the arrow in FIG. 4 together with the rod 42' of the feed cylinder 42, the second chain 47 will not loosen. 42 Ronto 4
2' into the cylinder, the fourth
The sprocket 45 can pull the slide base 35 to the right in FIG. 4 via the second chain 47, and the rotary drive 1133 can be moved backward.

] The rotating shaft 48 rotated by the two rotary drive devices 33 is a metal tube, and has a male thread 48a formed at one end and a female thread 48b formed at the opening at the other end.

As shown in FIG. 1, a rotary shaft guide 49 and a rotary shaft wrench 50 are provided at the tip of the slide guide 28 described above.

The rotating shaft guide 49 is formed by disposing a plurality of small bearings 51 in an annular shape in accordance with the outer diameter of the rotating shaft 48 inside a housing having an opening, and rotatably supports the rotating shaft 48. , guide the rotating shaft so that it does not swing.

On the other hand, the one-rotation shaft wrench 50 is a mouth-shaped member that is held on the one-rotation shaft 48 and prevents the rotation of the rotation shaft 48, and the L-shaped part that constitutes the - part of the U-shape is It is configured to swing.

Therefore, if the acid oscillator 48b side of the rotating shaft 48 is penetrated into the opening of the rotating shaft guide 49 and the tip portion is rotatably supported, and the male screw 48a side is directed toward the rotary drive machine 33, the one-turn drive The external thread 48a of the rotating shaft 48 can be screwed into the externally threaded portion of the rotating shaft connecting member 39 of 33 for connection. Then, the acid screw 48 protruding from the rotating shaft guide 49
A cutting bit 6 can be installed on the b side.

! The /J cutting bit 6 is a short cylindrical body or a short cylindrical member with a plurality of cutting blades 52 arranged in an annular manner at the tip thereof, and a male screw portion 53 formed at the rear end. be. Therefore, this cutting bit 6 can be firmly attached to the tip of the rotating shaft 48 by screwing the male threaded portion 53 into the female thread 48b of the rotating shaft 48.

The threaded portions formed at the connection portion between the cutting bit 6 and the rotating shaft 48 and the connecting portion between the rotating shaft 48 and the rotating shaft connecting member 39 are connected to the cutting bit 6 by the rotary drive machine 33.
Threads are cut in the direction that tightens when rotated in the cutting direction. Therefore, the cutting hit 6 and the like will not come off during the drilling operation while the cutting viatro is rotating.

The first cylinder 19 of the above-mentioned drilling fit. Second cylinder log 20, tilt cylinder 26. An oil feed pipe (not shown) from a hydraulic unit IO is connected to the slide cylinder 29, the feed cylinder 42, the hydraulic motor 36, and so on. The hydraulic unit 10 shown in FIG. 1 includes a hydraulic oil tank,
It is composed of known hydraulic equipment such as a pump, a motor for driving the pump, and various valves such as a pressure regulating valve, and is capable of appropriately pressure-feeding hydraulic oil to the cylinders etc. through an oil feed pipe by operating an operating handle 54. I can do it. Incidentally, the oil pipe that communicates each hydraulic device on the drilling machine l side with the hydraulic unit lO provided in the power supply vehicle 8F is designed so that it can be cut midway by a coupler.

Therefore, there will be no inconvenience when the power supply vehicle 8 is separated from the borehole Jal and carried out to the outside of the tunnel to be charged in the storage pond 9. 1; q) The electric wiring connecting the motor of the hydraulic unit 1O and the power source 11 (the storage battery 9 of 8) may be cut.

Next, a case will be described in which a hole is drilled in a tunnel using the hole drill I having the configuration described above.

First, the drilling fit is moved to the tunnel work site, and the stabilizing mechanism stabilizes the drilling machine L at position 91 (Q) inside the tunnel.The stabilizing mechanism shown in FIG. and rear hydraulic cylinders 55 are installed horizontally,
A pressing arm 56 is connected to the rod 55' of each cylinder 55. In addition, at the tip of the pressing arm 56, a pressing part 57 made of rubber or the like having a large friction coefficient is attached to the moat. Therefore, when the hydraulic oil is pumped from the hydraulic unit 10 to each hydraulic cylinder 55 and the rod 55' is extended, each pressing arm 56 extends in the left and right direction, and the 6 pressing r [: part 57 corresponds to the slope of the tunnel wall surface. The inclination allows the IV surface to be pressed left and right to stabilize the hole drilling machine.

When drilling the left wall of the tunnel, the base rotation mechanism 14
The rotary unit 25 is rotated to direct the cutting bit 6 toward the left side. In this state, hydraulic oil is force-fed to the hydraulic motor 36 to operate the rotating part IhJa 33 to rotate the cutting bit 6, and at the same time, the hydraulic oil is force-fed to the feed cylinder 42 of the feed mechanism 34 to rotate the rotary drive machine 33. When the zero-rotation drive machine 33 moves forward slowly to the left in FIG. 6, the cutting bit 6 comes into contact with the wall surface. Therefore, this cutting bit 6
By rotating the machine, holes can be made in the tunnel wall and test pieces can be taken. In addition, for example, rotation drive fi3
An illumination lamp 58 is provided on the slide guide 2, etc.
By illuminating the front of the cutting bit 8, it is possible to monitor the state in which the cutting bit 6 starts cutting the concrete wall surface, the cutting direction, etc., so that safe and accurate drilling work can be performed.

Furthermore, when the tilt mechanism is actuated by force-feeding hydraulic oil to the tilt cylinder 26 described above, even if the vehicle body 31 rotation base 4 and turning mechanism 5 are not moved, one rotation of the entire structure 7 is slightly reduced relative to the turning mechanism 5. Since it can be rotated to
This can be done by slightly rotating the slide guide 28 around the connecting portion 25 of the tilt board 24 to adjust the position of the cutting bit 6.

If the cutting bit 6 does not reach the wall surface even if the rotary drive machine 33 advances to the vicinity of the rotary shaft wrench 50, or if the cutting bit 6 is to be advanced further to open a deep hole, the rotary shaft 48 should be connected. To add 0 rotation shaft 48, the rotation shaft wrench 50 is engaged with the rotation shaft 48 of the slide guide 281- to prevent rotation of the rotation shaft 48, and then the rotation drive machine 3
When the 0-rotation drive machine 33 is reversed, the 1-rotation shaft 4
8 remains stationary, the female screw of the fifth rotation shaft connecting member 39 comes off from the male screw 48a of the rotation shaft 48. therefore,
Only the rotary drive a33 is moved back leaving the rotary shaft 48 to which the cutting bit 6 is attached, and a sufficient gap is formed between the rear end of the rotary shaft 48 of the slide guide 28F and the rotary shaft connecting member 39 of the rotary drive a33. The newly added rotating shaft 48 can be faced within this gap. Then, the female thread 48b of the new rotating shaft 48 is screwed together with the male thread 48a of the rotating shaft 48 on the slide guide 28, and the male thread 48a of the new rotating shaft 48 is connected to the rotating shaft of the rotary drive machine 33. member 39 can be connected. By repeating this operation and adding rotating shafts 48 one after another, the cutting bit 6 can be fed deeper by the length of the added rotating shafts 48, making it possible to open a hole several hundred meters deep. .

When injecting a hardening agent or the like that hardens by reacting with water into the opened hole, pressurize the wood from the water column inlet 59 provided at the rear end of the rotary drive machine 33, as shown in FIG. supply,
A curing agent is supplied under pressure from the drug supply port 60. The water and curing agent supplied under pressure in this manner pass through the hollow portion of the one-rotation shaft 48 and reach the deepest part of the hole. Therefore, the inner circumferential surface of the opened hole can be efficiently hardened.

Note that even without adding the rotating shaft 48, when hydraulic oil is force-fed to the slide cylinder 29 and the rod 29' is drawn into the cylinder body, the slide guide 28 itself moves within the U-shaped groove of the slide support portion 27. The cutting bit 6 can be moved forward. Therefore, slide cylinder 2
If the stroke is within the stroke of 9, it may not be necessary to add the rotating shaft 48.

Next, a case will be described in which a hole is drilled in the lower left portion of the tunnel wall surface. In this case, as shown in FIG. 7, hydraulic oil is forced into the first cylinder 19 to extend the port 19', and when the rod 19' of the first cylinder 19 is extended, the support frame 16 is moved to the proximal end. The free end side rotates in the upward direction around the shaft-mounted part. Therefore, the rotation of the support frame 16 causes the entire rotary pressing mechanism 7 to rotate, and when the support frame 16 is rotated sufficiently,
As shown in FIG. 7, the slide guide 28 can be turned into an upright state with its tip directed in the r direction, and the cutting bit 6 can be directed in the F direction. Note that when adjusting the cutting bit 6 to a predetermined position, when the tilt mechanism is activated, the slide guide 28 can be slightly moved left and right around the connection part 25 of the tilt board 24. It can be accurately and easily aligned to the predetermined position on the ↑゛ side.

Then, while the cutting bit 6 is being rotated by the rotary drive machine 33, the rotary drive machine 33 is lowered along the slide guide 28 by the operation of the feed mechanism 34, so that the cutting bit 6 comes into contact with the lower left side of the inner wall surface of the tunnel. In this state, feed mechanism 3
When the rotary drive machine 33 is further lowered by the operation of 4 and a downward pressing force is applied to the cutting bit 6, the cutting bit 6 which is rotating by the operation of the rotary drive machine 33 gradually cuts the tunnel wall surface and opens a hole. Or you can take a test piece.

Note that by adjusting the extension length of the loft 19' by adjusting the amount of oil pumped to the first cylinder 19, it is possible to open a hole at a desired position in the range from the left side part to the lower left part of the tunnel wall surface. , or take a test piece.

Next, the case where a hole is drilled in the upper right portion of the tunnel inner wall surface in FIG. 6 will be described. In this case, hydraulic oil is forced into the second cylinder 20 from the state shown in FIG.
Extend ′. When the rod 20' of the second cylinder 20 is extended, the tilt base 21 moves once in the direction of raising the pivoted portion of the free end of the support frame 16 with respect to the rod 20'. Therefore, when the entire rotary pressing mechanism 7 rotates in the direction of the arrow in FIG. 8 and the rod 20' of the second cylinder 20 is fully extended, the slide guide 28 turns its tip upward as shown in FIG. The J-cutting bit 6 can be turned upward by converting to the direct cutting state. In addition, when adjusting the cutting bit 6 to a predetermined position, when the tilt mechanism 41 is activated, the slide guide 28 can be slightly moved left and right around the connection part 25 of the tilt board 24, so that the cutting bit can be adjusted to the desired position. 6 can be accurately and easily aligned to a predetermined position on either side. Then, while the cutting bit 6 is being rotated by the rotary drive machine 33, the feed mechanism 34 is operated to move the rotary drive machine 33 up one unit along the slide guide 28, so that the cutting bit 6 is moved to the right side of the tunnel inner wall surface. Interact with me. In this state, when the rotary drive machine 33 is further raised by the operation of the feed mechanism 34 and an upward pressing force is applied to the cutting bit 6, the cutting bit 6 which is rotating due to the operation of the rotary drive a33 gradually cuts the tunnel wall surface. A hole can be made in the lever portion or a test piece can be taken.

Note that by adjusting the extension length of the rod 20' by adjusting the amount of oil pumped to the second cylinder 20, the hole can be drilled at a desired position in the range from the left side part to the right side of the tunnel inner wall surface. Or open one.

Or you can take a test piece.

When drilling a hole on the right side of the inner wall surface of the tunnel in FIG.
Just point it towards the right side.

In addition, when drilling a hole in the lower right part of the inner wall surface of the tunnel in FIG. 6, leave the car body 3 as it is and rotate the rotating base 4 to direct the tip of the slide guide 28 to the right, as shown in FIG. 9. As shown in FIG.
When the support frame 16 is extended, the free end rotates in the direction L>L about the pivoted part of the )& end. Therefore, the rotation of the support frame 16 causes the entire rotary pressing mechanism 7 to rotate, and when the support frame 16 is rotated sufficiently, the slide guide 28 is in a straight position with its tip facing toward the dot as shown in FIG. Convert to ! , the IJ cutting bit 6 can be directed directly downward. Then, when the rotary drive machine 33 is lowered F along the slide guide 28 by the operation of the feed mechanism 34 while rotating the cutting bit 6 by the one-rotation drive fi 33, the Zino cutting bit 6 comes into contact with the right F side portion of the tunnel inner wall surface. . In this state, the rotary drive machine 33 is further lowered by the operation of the feed mechanism 34!
,! When a pressing force of 216 is applied, the cutting bit 6, which is rotating by the operation of the one-rotation drive a33, gradually cuts the tunnel wall surface and opens a hole in this right F part, or performs a test. You can collect pieces.

Note that by adjusting the extension length of the rod 19' by adjusting the amount of oil pumped to the first cylinder 19, a hole can be opened at a desired position in the range from the right side part to the lower right part of the tunnel inner wall surface. or take a test piece.

Note that the hydraulic oil is force-fed to both the first cylinder 19 and the second cylinder 20, and the rod 19' of the first cylinder 19 is
By appropriately adjusting the extension length of the rod 20' of the second cylinder 20, it is possible not only to drill a hole at a desired position on the inner wall surface of the tunnel, but also to appropriately set the direction in which the hole advances. Furthermore, as shown in FIG. 6, for example, the slide guide 28 can be raised while remaining in a horizontal state.

Effects of IJ11> As explained above, according to the present invention, since the rotary drive machine is moved along the slide guide, the cutting focus can be sent out straight. Therefore, the direction of the hole can always be maintained accurately, and even deep holes can be accurately drilled.

Furthermore, the present invention allows the slide guide to be oriented not only horizontally or downwardly, but also in the true I- direction, by appropriately adjusting the rod extension lengths of the first and second cylinders. can. That is, the drilling operation can be performed by pointing the cutting bit in any direction. Therefore, in work sites such as tunnels where work is often performed not only downward but also in the left, right, lateral, and upward directions, the hole drilling work according to the present invention, which conventionally required a great deal of labor and time, can be It can be easily and efficiently cut using a machine.

Further, the structure of the present invention is extremely cylindrical.

It can be operated with a small amount of driving force. Therefore, in tunnels etc. where ventilation is difficult.

Even if a storage battery is used as a power source, it can be sufficiently put to practical use. For this reason, it is important to prevent oxygen-deficient IG failures in tunnels.
do.

Furthermore, since the present invention can be controlled remotely, there is no need to work at heights, and the work can be done safely.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the power supply vehicle connected, FIG. 2 is a plan view, and FIG.
The figure is a partially cut-away side view of the rotating press mechanism with the rotating base rotated 90 degrees with respect to the vehicle body, Figure 4 is a partially cut-away side view of the feed mechanism, and Figure 5 is a part of the rotating shaft. Fig. 6 is a front view of the rotary pressing mechanism in a tunnel with the rotating pressing mechanism rotated approximately 90 degrees relative to the vehicle body, and Fig. 7 is a state in which the cutting bit is directed downward to the left. 8 is a side view of the rotary pressing mechanism in a state where the cutting bit is directed upward to the right, and FIG. 9 is a side view of the rotary pressing mechanism in a state in which the cutting bit is directed toward the right F. FIG. 1 is a hole drilling machine, 2 is a wheel, 3 is a vehicle body, 4 is a rotating base, 5 is a turning mechanism, 6 is a cutting bit, 7 is a rotating pressing mechanism, 8 is a power supply vehicle, 9 is a storage battery, IO is a hydraulic unit, 16 is a support frame, 19 is a first cylinder, 20 is a second cylinder, and 27 is a slide support portion. 28 is a slide guide, 29 is a slide cylinder, 33
34 is a rotation drive mechanism, 35 is a slide base,
36 is a hydraulic motor, 42 is a feed cylinder, 48 is a rotating shaft, 52 is a cutting blade, and 54 is an operating handle. Patent applicant: TeriNe Co., Ltd. -/) Patent applicant: Hiromitsu Okinaga-\.

Claims (5)

[Claims] (1) A rotary pressing mechanism equipped with a rotary drive machine that moves along a long slide guide is provided on a movable vehicle body,
A drilling machine consisting of a rotary shaft with a cutting bit attached to the tip connected to the rotary drive machine mentioned above. (2) The rotary pressing mechanism consists of a sprocket attached to the end of the slide guide, a chain attached to the sprocket attached to the rod of the feed cylinder provided along the slide guide, and one end of the chain connected to the rotary drive machine. The drilling machine according to claim 1, wherein the rotary drive machine is moved along the slide guide by a feeding mechanism whose other end is connected to the slide guide. (3) a support frame whose base end is pivotally mounted on a movable vehicle body;
a first cylinder having one end pivoted in the middle of the length of the support frame and the other end pivoted to the vehicle body; a pivoting portion of the support frame to which the first cylinder is pivoted; and a free end of the support frame. a turning mechanism having at least a second cylinder having one end pivotally connected therebetween;
A rotary pressing mechanism equipped with a rotary drive machine that moves along a long slide guide is connected to the free end of the support frame of the turning mechanism and the other end of the second cylinder, and a cutting bit is attached to the tip. A drilling machine in which a rotating shaft is connected to the above-mentioned rotary drive machine. (4) The drilling machine according to any one of claims 1 to 3, wherein the vehicle body is provided with a rotary base that is horizontally rotatable. (5) The scope of claims 1 to 4 is such that hydraulic oil is force-fed from a hydraulic unit to a hydraulic device such as a hydraulic motor of a rotary drive machine via an oil feed pipe and remotely controlled by operating an operating handle. A drilling machine according to any of the above.