JPH07238772A - Feeder for double pipe type drill tool - Google Patents

Abstract

PURPOSE:To extract drill tools one by one from a drill tool group under a densely superposed state, and to supply a drill-tool detachable device, etc., with the drill tools under the state, in which inner rods are projected to one side. CONSTITUTION:A movable roller frame 93 is mounted on the underside side of a take-up frame 90 projected to the side from the front end of a Z-axis beam 72, and a rockable take-up arm 95 is installed to the underside of the roller frame 93. The base-end side arm 95A of the take-up arm 95 is inserted into a casing tube 4A by the movement of the roller frame 93 while an inner rod 4B is pushed out to the reverse side by the base-end side arm 95A. The pipe wall section of the casing tube 4A is held by the base-end side arm 95A inserted into the casing tube 4A and a holding head 99 at the front end of the Z-axis beam 72.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeding device for feeding a double-tube drill tool consisting of, for example, a casing tube and an inner rod to a drill tool attaching / detaching device.

[0002]

2. Description of the Related Art Conventionally, when drilling holes in anchor construction, etc., since the hole is often an inclined hole, the hole wall tends to be unstable. Also, the hole wall is loosened, the grout material is convenient to fill, and the hole is bent. Double pipe digging using a casing tube is performed because it is easy.

In such drilling work, a drill tool consisting of an inner rod and a casing tube is sequentially supplied to a drilling machine and connected to the rear end of the drill tool penetrating into the ground to penetrate into the ground. The work of attaching and detaching the drill tool was performed by human power. Also,
The recovery work after the completion of perforation was also manually performed.

In recent years, various rod attaching / detaching devices for mechanizing the attaching / detaching work to / from the drilling machine have been proposed, but the supply of the drill tool to the rod attaching / detaching device is still performed manually.

[0005]

However, since the drill tool is a heavy object, it is a labor-intensive task to perform such a feeding operation manually. In addition, in the case of a double tube drill tool attaching / detaching device, the casing tube and the inner rod are normally grasped separately, so when delivering to such an attaching / detaching device, part of the inner pipe is Since it is necessary to supply the inner rod protruding from the outer tube, it is difficult to pull out the inner rod inserted inside by a predetermined amount. In addition, there is a problem that a finger may be caught and the amount of protrusion of the inner rod tends to be different.

[0006] On the other hand, a drill tool can usually be stored in a narrower volume when it is stacked in a storage rack,
In order to take out one drill tool from this densely packed state, an adjoining drill tool cannot obstruct and take out with a gripping structure that is generally adopted to grip the outer surface of the pipe.

Therefore, the present invention has been made in view of the above problems.
A double pipe that can be easily taken out one by one from a group of drill tools that are piled up in a close-packed state, and that can be supplied to the drill tool attaching / detaching device, etc. with the inner pipe protruding to one side by a predetermined amount. The present invention provides a supply device for a rotary drill tool.

[0008]

The object is to fix a bracket to an outer tube pressing member that abuts the outer surface of the tube end portion of the outer tube by projecting laterally from the tip of the outer tube pressing member, A slide body is provided on the lower surface side of the bracket so as to be movable along the protruding direction of the bracket, and is pivotally supported by a vertically extending piece fixedly mounted on the lower surface of the slide body to form a seesaw shape along the protruding direction of the bracket. And a motion control means for controlling the rocking motion of the rocking member is provided on the arm of the rocking member at the tip end side of the rocking member in the protruding direction of the bracket. At the same time when the base end side arm is inserted into the outer pipe, the base end side arm pushes the inner pipe to the opposite side, and the base end side arm inserted into the outer pipe and the outer pipe pressing member cause a wall portion of the outer pipe. It has a tube gripping part that holds It can be solved by.

As a device for moving the gripped drill tool, an X-axis drive unit for movably holding the X-axis beam arranged in the X-axis direction with respect to the support along the beam axis direction is used. A Y-axis drive unit that is fixed and holds the Y-axis beam arranged in the Y-axis direction at one end of the X-axis beam so as to be movable along the beam axis is fixed to one end of the Y-axis beam. Z for holding a Z-axis beam arranged in the Z-axis direction so as to be movable along the beam axis direction
A configuration in which an axial drive unit is fixedly provided, and further the tube gripping portion is provided at the lower end of the Z-axis beam by using the Z-axis beam as an outer tube pressing member is preferably adopted.

[0010]

In the present invention, the arm on the proximal end side of the swinging member is configured to be insertable into and removable from the outer tube. Therefore, an arbitrary drill tool is fixed in a pressed state by the outer pipe pressing member, and the slide body is moved to insert the proximal end side arm of the swinging member into the outer pipe to operate a cylinder or the like for controlling the swinging motion. Thus, when the base end side arm is pushed upward, the outer wall of the outer tube is clamped by the outer tube pressing member. Therefore, even if the drill tools are stacked in a dense state, they can be easily taken out one by one.

Further, when the base end side arm is inserted, the inner pipe is pushed out at the tip end of the base end side arm. It can be supplied with the inner tube protruding by a fixed amount (arm length). In addition, even when the attachment / detachment to / from the punching machine is performed manually, the inner tube can be received in a protruding state, and therefore the setting on the punching machine becomes easy.

Further, in the moving device, since the beams arranged in the X, Y, and Z axis directions are respectively movable in the beam axis directions, the drill tool held by the tube gripping portion can be arbitrarily moved. Can be moved to a position.

[0013]

EXAMPLES The apparatus of the present invention will be described in detail below based on examples. 1 is an overall side view of the drill tool attaching / detaching device, FIG. 2 is a plan view thereof, and FIG. 3 is a front view thereof. The automatic drill tool attaching / detaching device 1 according to the present invention is attachable / detachable to / from a moving vehicle body 100 such as an existing power shovel, and can freely move to and from a predetermined drilling place.

A swing bracket 50 which is rotatable around a vertical axis by a hydraulic cylinder 54 is attached to the moving vehicle body 100, and a swing cylinder 50 is rotatable around a horizontal axis by a hydraulic cylinder 52 with respect to the swing bracket 50. The bracket 51 is attached, and the main frame 55 is attached to the front vertical plane of the bracket 51. To mount the main frame 55, L-shaped rails 51a and 51b are fixedly provided on both sides of the front side of the front surface of the bracket 51. The rails 51a and 51b are formed on both sides of the main frame 55. By engaging the convex ridges 55d and 55e,
The main frame 55 is slidable in the vertical direction using the bracket 51 as a guide, and its movement is controlled by the expansion and contraction operation of the hydraulic cylinder 53 connected to the bracket 55f at the upper end of the main frame 55. .

First, one end of a boom 60 is pivotally supported by a mounting bracket 55a fixedly mounted on the upper portion of the main frame 55, and is made rotatable by a hydraulic cylinder 61 in the up and down direction. One end of the first arm 63 is pivotally supported with respect to the other end of the
A hydraulic cylinder 62 that connects the middle part of No. 3 and the middle part of the boom 60 is rotatable in the up and down direction.
A torque actuator 66 is provided on the other end side of the first arm 63.
The handling unit 2 is attached through the torque actuator 66, and the torque actuator 66 allows the front end side to freely rotate in the forward and reverse directions around the axis.

The torque actuator 66 is connected in detail, as shown in FIG. 4, by a connecting bracket 66a fixed to the base end of the torque actuator 66 and a connecting bracket 63a provided at the tip of the first arm 63. Are connected by a pin 65, and a cylinder bracket 66b is fixedly mounted on the side of the torque actuator 66. The middle of the hydraulic cylinder 64 is pivotally supported on the cylinder bracket 66b, and the piston of the hydraulic cylinder 64 is Since the tip end portion is pivotally supported with respect to the side portion bracket 63b that is extended to the side portion from the connecting bracket 63a, the entire front end side handling unit 2 including the torque actuator 66 is expanded and contracted by the hydraulic cylinder 64. It can be freely rotated in the prone or supine direction.

The handling unit 2 mainly grips the casing tube 4A, grips the casing hand 2A capable of rotating the casing tube 4A in this gripped state, and the inner rod 4B, and holds this gripped state. Inner rod hand 2 that can rotate the inner rod 4B with
B (hereinafter, simply referred to as a rod hand).

The base arm 22 to which the casing hand 2A and the rod hand 2B are attached is connected to the torque actuator 66 via the slide unit 20. In the slide unit 20, a flange 24a is provided on a slide rail 24 fixed to the torque actuator 66, while rollers 23a and 23a of a slide block 23 fixed to the base arm 22 are attached to the flange 24a of the slide rail 24. And the slide block 23 is movably attached to the slide rail 24 and fixed to the slide block 23.
Of the piston 21a is connected to the end protruding portion 24b of the slide rail 24, and the slide block 23 and the entire handling unit 2 integrally fixed to the slide block 23 are slid by the expansion and contraction operation of the hydraulic cylinder 21. It is movable along 24.

First, the casing hand 2A provided on the tip end side of the base arm 22 will be described in detail with reference to FIG.
8 is fixed, and a plurality of driven rollers 29a to hold the casing tube 4A on the roller holder 28.
29c is provided. In addition, at the tip of the L-shaped bracket 22a that extends in an L-shape from the tip of the base arm 22,
The pressing arm 26 is rotatably supported by the shaft 26a, and the hydraulic cylinder 25 is pivotally supported by the shaft 25a with respect to a cylinder support bracket 22c fixedly provided in the middle of the L-shaped bracket 22a. The tip end of the piston 25b is the pressing arm 26.
By connecting one end of the hydraulic cylinder 25 with a shaft 25c, the rotating operation of the pressing arm 26 is controlled by the expansion and contraction operation of the hydraulic cylinder 25. Further, a drive roller 27 driven by a hydraulic motor 30 with a speed reducer 31 in between is provided at the tip of the pressing arm 26, and the driven rollers 29a-2 are used.
With 9c, the casing tube 4A or the inner rod 4B at the time of recovery is gripped, and the casing tube 4A and the like can be freely rotated in the forward and reverse directions while being gripped.

When the drive roller 27 is pressed against the casing tube 4A by the force of the hydraulic cylinder 25, as shown in the figure, three driven rollers 29a to 29 are used.
It is supported by c, but when the casing tube 4A is larger than this, it is supported by the driven rollers 29a and 29c, and when the inner rod 4B is recovered,
As indicated by the chain line, it is supported by driven rollers 29a and 29b. Further, the casing tube 4A is rotated in a tightening direction when the casing tube 4A is connected, and is rotated in a loosening direction when the casing tube 4A is collected. The three driven rollers 29
The a to 29c are arranged at a slight distance in the axial direction of the casing tube 4A for stability when the casing tube 4A is gripped.

On the other hand, the rod hand 2B has a base arm 2
A hydraulic cylinder 32 that is attached to the other end of a first link 33 and a second link 34 that are provided in parallel in the middle of 2 and that connects the intermediate portion of the first link 33 and the intermediate portion of the base arm 22. The first and second links 33 and 34 are rotated in parallel by the expansion and contraction of the hydraulic cylinder 32, and the rod hand 2B can be moved in the direction orthogonal to the axis of the inner rod 4B. There is.

The rod hand 2B is shown in detail in FIG.
And as shown in FIG. 8, the rod hand frame 3
5, a pair of substantially L with the shaft 41 as a support shaft.
The character-shaped hand arms 37 and 38 are provided in the shape of scissors, and the rear ends of the hand arms 37 and 38 are located at the hydraulic cylinder 3.
6 are connected to each other, and the distal end sides of the hand arms 37 and 38 are opened and closed by the expansion and contraction operation of the hydraulic cylinder 36 to grip the inner rod 4B.

Driven rollers 40a to 40d are provided on the tip ends of the hand arms 37 and 38, respectively, and a drive roller 39 is integrally provided on the shaft 41, and the driven roller 40a to 40d is attached to the peripheral surface of the gripped inner rod 4B. The driven rollers 40b and 40d and the drive roller 39
Abut and hold it. The hand arms 37, 3
A hydraulic motor 43 is provided on a side portion of the drive shaft 8. The drive force is transmitted to the shaft 41 via the speed reducer 42 to drive the drive roller 39, so that the gripped inner rod 4B can be moved in the forward and reverse directions. Can be rotated. The four driven rollers 40a to 40d are provided for the hand arms 37 and 38 so that the driven arms 40a to 40d can be held even if the inner rods have different sizes. 40c is idle, but if the diameter size of the gripping inner rod 4B becomes smaller,
The driven rollers 40b and 40d will play.

On the other hand, under the main frame 55, hooking bars 55b and 55c provided in upper and lower two stages are fixedly provided, while hooking to a tool rack 10 for accommodating the drill tools 4 and 4. 10a and 10b are provided,
Each of these hooks 10a10b is hooked on the hooking bars 55b and 55c, so that the tool rack 1
0 is supported by the main frame 55. The tool rack 10 is a rack for accommodating the drill tool 4 assembled in a U-shaped cross section using the face frames 10A to 10C,
The drill tools 4, 4, ... Are stacked and accommodated in this. Further, a temporary bracket 11 having an arcuate notch formed on the upper surface is fixedly provided at the upper end of the face member 10C,
It is a temporary storage place when the drill tool 4 is delivered between a take-up unit 3 and a handling unit 3 which will be described later.

On the other hand, a take-up unit 3 which is a drill tool supply device of the present invention is provided in an intermediate portion of the main frame 55. This take-up unit 3
Are taken out one by one from the drill tools 4, 4 ... Group housed in the tool rack 10 in a close-packed state and supplied to the handling unit 2.

The take-up unit 3 comprises a take-up hand 5 for holding the drill tool 4 and the like, and a beam unit 6 for moving the held drill tool 4 to the temporary bracket 11.

The take-up hand 5, as shown in detail in FIGS. 12 and 13, overhangs the lower end side of the Z-axis beam 72, which is an outer tube pressing member, to fix the take-up frame 90. , The guide rail 74 having concave grooves on both sides of the take-up frame 90.
A and 74B are fixed face-to-face, and a rail groove 94C with an opening facing downward is formed.
A roller frame 93, which is a slide body according to the present invention, having a plurality of rollers 93a, 93a ... Is internally provided, and the roller frame 93 and the Z-axis beam 72 are connected to each other by a hydraulic cylinder 91. 9
The roller frame 93 is movable along the rail groove 94C by the extension / contraction operation of 1.

A connecting bracket 93b is vertically provided on the lower surface of the roller frame 93, and a take-up arm 95 is provided on the connecting bracket 93b so as to be swingable in a balance-like manner by a shaft 98. A hydraulic cylinder 97, which is vertically expandable and contractible, is arranged at one end of an arm 95B (hereinafter referred to as an operating side arm) on the tip side in the frame projecting direction from the shaft 98 of the take-up arm 95, and the take-up arm 95 and the take-up arm 95 are connected to each other. Up arm 9
5 and one end thereof are connected to each other by a spring 96, and when the hydraulic cylinder 97 is contracted, the contracting force of the spring raises the operating side arm 95B upward, and the Z-axis beam from the shaft 98 of the take-up frame 95. The base end side arm 95A (hereinafter, referred to as a sandwiching arm) near 72 is lowered. The spring 96 may be omitted and the roller frame 93 and the operating side arm 95B may be connected by the hydraulic cylinder 97. Further, in place of the hydraulic cylinder 97 for controlling the swing operation, a rotatable ball shaft is screwed into the operating side arm 95B from the roller frame 93 side, and the take-up arm 95 is swung by the rotation of the ball shaft. It is also possible to control the motion.

Further, an extruding end 95a is formed at the tip of the take-up arm 95, and as shown in the drawing, the roller frame 9 is formed.
The movement of 3 causes the holding arm 95A to move to the casing tube 4
When inserted into the pipe A, the push-out end 95a contacts the pipe end of the inner rod 4B and pushes out a predetermined amount (the length of the arm) to the opposite side as the roller frame 93 moves.

On the lower surface of the Z-axis beam 72, there is provided a hold head 99 having an arcuate surface conforming to the outer surface shape of the casing tube 4A. The holding arm 95A of the take-up arm 95 is a casing. With the tube 4A inside (the state shown by the chain line), the hydraulic cylinder 97 is extended to push the holding arm 95A upward, and the hold head 99 and the holding arm 95A move the pipe wall portion of the casing tube 4A. It can be clamped. The hold head 99 is replaced according to the size of the casing tube 4A.

On the other hand, in detail, as shown in FIGS. 9 and 10, the beam unit 6 has an X drive unit 73 fixed to the main frame 55, and an X axis beam 70 is attached to the X drive unit 73. Is provided movably, then a Y drive unit 74 is fixedly attached to one end of the X-axis beam 70, and a Y-axis beam 71 is movably provided on the Y drive unit 74.
The Z drive unit 75 is fixed to one end of the axis beam 71, and the Z axis beam 72 is movably provided on the Z drive unit 75. The Z drive unit 75 is fixed to the tip of the Z axis beam 72 by the take-up hand 5. The grasped drill tool 4 can be moved to a predetermined position (position of the temporary bracket 11).

Here, the X drive unit 73, Y
Since the drive unit 74 and the Z drive unit 75 have the same configuration, the Y drive unit 74 will be described as a representative of the drive units 73 to 75.
Based on. A hydraulic motor 80 is provided on a side portion of a unit box 88 fixed to the tip of the X-axis beam 70, and a pinion gear 85 is fixed to a shaft 86 via a coupling 81 for connection and a speed reducer 87 in the middle. At the same time, two sets of a pair of guide rollers 84a and 84b arranged at a predetermined interval are provided inside the unit box 88 so as to face each other. On the other hand, a plate-shaped rail 82 is fixed to the rear side of the Y-axis beam 71, and the plate-shaped rail 82 is mounted so as to be sandwiched between the guide rollers 84a and 84b, and the rear side of the Y-axis beam 71 is also attached. By engaging the rack gear 83 fixed to the pinion gear 85 with the pinion gear 85, the Y-axis beam 71 is moved in the beam axis direction by driving the hydraulic motor 80.

Next, the above-mentioned automatic drill tool attaching / detaching device supplies the drill tools 4, 4, ...
The recovery will be described in detail.

[Supply of Drill Tool] Now, the drill tool 4 in which the inner rod 4B is inserted into the casing tube 4A is closely packed in the tool rack 10 and the tool rack 10 is placed on the ground. State (Fig. 1
From the state shown in (1), the case where the drill tools 4 are supplied one by one to the adjacent boring machine (not shown) will be described.

One of the casing tubes 4A in which the hold head 99 of the Z-axis beam 72 is housed in the tool rack 10 by operating the hydraulic motors of the X, Y, and Z drive units 73, 74, and 75 of the take-up unit 3.
The casing tube 4A is moved so as to come into contact with the outer surface thereof, and the Z-axis beam 72 is slightly moved downward to apply a pressing force to the casing tube 4A to fix and stabilize the casing tube 4A. At this time, the hydraulic cylinder 91 of the take-up hand 5 is in the most extended state.

When the hydraulic cylinder 97 of the take-up arm 95 is contracted from this state, the holding arm 95A of the take-up arm 95 swings downward due to the force of the spring 96, and a gap is formed between the take-up frame 90 and the lower surface. It is formed. In this state, when the hydraulic cylinder 91 is gradually contracted, the roller frame 93 moves to the Z-axis beam 72 side along the rail groove 94C, the holding arm 95A of the take-up arm 93 enters the inside of the casing tube 4A, and Push out the inserted inner rod 4B to the opposite side.

The operation of the hydraulic cylinder 91 is stopped before the end surface of the casing tube 4A collides with the end of the connecting bracket 93b of the roller frame 93.
When the hydraulic cylinder 97 is extended, the holding arm 95A of the take-up arm 95 swings upward to firmly hold the tube wall of the casing tube 4A with the hold head 99.

Next, the hydraulic motor of the Z drive unit 75 is operated to move the Z-axis beam 72 upward and lift the drill tool 4. After that, the X, Y, Z drive units 73, 74, 75 are operated to move the drill tool 4 to the position above the temporary bracket 11, and the holding by the take-up arm 95 is released, so that the drill tool 4 is moved above the temporary bracket 11. Place on. Then, the take-up hand 5 is moved to the position of the drill tool 4 to be moved next.

Next, with the hydraulic cylinder 25 of the casing hand 2A contracted to maximize the opening of the grip portion of the casing hand 2A, the hydraulic cylinders 61, 62 are opened.
Is operated to move the casing hand 2A to the temporary placement position of the drill tool 4, the casing tube 4A is taken into the casing hand 2A, the hydraulic cylinder 25 is extended, and the casing tube 4A is gripped. In addition,
At this time, the hydraulic cylinder 32 for operating the parallel links 33 and 34 is extended to the maximum and the rod hand 2B is retracted to a position apart from the drill tool 4.

When the casing tube 4A is gripped by the casing hand 2A, the parallel cylinder hydraulic cylinder 32 is contracted while the hydraulic cylinder 36 of the rod hand 2B is contracted to maximize the grip opening of the rod hand 2B. The rod hand 2B to the drill tool 4 side, the take-up arm 95 takes in the inner rod 4B protruding outward from the end of the casing tube 4A, extends the hydraulic cylinder 36, and the rod hand arm 37, 38 Hold the rod 4B. This is the state shown in FIG.

On the other hand, before the above operation, on the drilling machine side, the drill head for connecting the drill tool 4 is retracted in advance to the rear end of the guide cell, and the drill tool 4 is supplied onto the guide cell. Reserve a space.

Then, the drill tool 4 held by the casing hand 2A and the rod hand 2B is moved to the drilling machine side located in front by operating the hydraulic cylinders 61 and 62, and the torque actuator is operated by the hydraulic cylinder 64. After the tip side is horizontal from 66 (state shown by the chain line in FIG. 1), the torque tool 66 is operated and held to adjust the drill tool 4 to the drilling angle of the drilling machine, and the inner rod 4B is set to the drilling center. To match.

The drill head of the drilling machine is advanced along the guide cell, and the rod connecting portion at the tip of the drill head is stopped at an appropriate distance from the inner rod 4B gripped by the rod hand 2B, and the hydraulic cylinders 61, 62. And 6
4. Make fine adjustment again so that the center of the inner rod 4B comes to the center of the drill head.

Next, the hydraulic motor 43 of the rod hand 2B.
Is started to rotate the drive roller 39 to rotate the inner rod 4B in the direction in which the connection screw is tightened, while operating the hydraulic cylinder 21 of the slide unit 20 to bring the inner rod 4B closer to the drill head side. While matching the screw and the female screw, the inner rod 4B is further rotated and sent to the drill head side, and both screws are coupled to complete the coupling of the drill head and the inner rod 4B. After that, rod hand 2B
The hydraulic cylinder 36 is extended to open the grip portion, and the parallel linked hydraulic cylinder 32 is extended to retract the rod hand 2B from the inner rod 4B.

Next, the drill head is gradually advanced and stopped when the casing tube connecting portion on the drill head side is at an appropriate distance from the casing tube 4A held by the casing hand 2A, and the hydraulic cylinders 61, 62 and Activate 64 to finely adjust the center of casing tube 4A to the center of the drill head. afterwards,
The hydraulic motor 30 of the casing hand 2A is started to rotate the drive roller 27, and the casing tube 4
While rotating A in the direction in which the connection screw is tightened, the hydraulic cylinder 21 of the slide unit 20 is actuated to bring the casing tube 4A closer to the drill head side, and both male and female screws are made to coincide with each other, and further the casing tube 4A is It is sent to the drill head side while rotating, and both screws are connected to each other to complete the connection between the drill head and the casing tube 4A.

After that, the hydraulic cylinder 25 of the casing hand 2A is contracted to open the grip portion, and the hydraulic cylinder 6
1, 62, 64 and 21 are operated to retract the casing hand 2A to prepare for handling the drill tool 4 to be supplied next, which is placed at the tool temporary placement place.

The drill head, to which one end of the inner rod 4B and one end of the casing tube 4A are connected, is advanced along the guide cell, and the existing inner rod 4B _f held by the centralizer portion of the guide cell and the rear of the drill head side. Align the center of the new inner rod 4B with the end and activate the rotation mechanism of the drill head, first join the inner rods together, then advance the drill head again, and move the casing tube 4A on the drill head side to the guide cell. Existing casing tube 4A _f retained
Aligning with the rear end, the rotating mechanism of the drill head is operated to advance the drill head to join the casing tubes together.

According to the above procedure, one set of drill tools 4
Is completed and the drilling is started again.

[Recovery of Inner Rod] When the predetermined drilling work is completed, the rotating mechanism of the drill head is reversely rotated while the casing tube 4A connected to the drill head is held by the clamp mechanism of the centralizer part. At the same time, when the guide cell is retracted along the guide cell, the screw between the casing connecting portion of the drill head and the connecting portion of the first casing tube 4A is first removed. When the drill head is still retracted after the casing tube 4A is detached, the inner rod 4B connected to the inner rod connecting portion of the drill head appears.
Is held by a holding mechanism different from the mechanism holding the casing tube 4A, and the rotating mechanism of the drill head is rotated in the reverse direction, the screw of the connecting portion is loosened. With the screw loosened, the drill head is retracted while still loosely coupled, and when the second inner rod 4B _f appears, the drill head is stopped from retracting.

After that, while the two inner rods 4B _f are gripped by the gripping mechanism of the punch, the first inner rod 4B is fixed to the first inner rod 4B by using another gripping / rotating mechanism of the punch. rotating the direction of loosening the screw 1 -th inner rod 4B and screws and two second inner rod 4B _f loosening.

The above-described operation is the recovery work on the punching machine side, and then the recovery work of the inner rod 4B by this device is started. By the above operation, the inner rod connecting portion of the drill head and the first and second inner rods 4B,
The two screws on the 4B _f connection are loose, but the screws are still joined. First, with the parallel link hydraulic cylinder 32 extended and the rod hand 2B retracted, the hydraulic cylinder 25 is contracted to open the casing hand 2A to open the hydraulic cylinders 61, 62, 6
4, 21 and the torque actuator 66 are operated so that the casing hand 2A is brought into contact with the inner rod 4B connected to the drill head.

The driven roller 29 of the casing hand 2A
When the inner rod 4B comes into contact with a and 29b, the hydraulic cylinder 25 of the casing hand 2A is extended and the drive roller 27 at the tip of the casing hand arm 26 is pressed against the inner rod 4B.
5 and extend inner rod 4B to casing hand 2
Firmly grip with A.

In this state, when the drill head is retracted while the rotating mechanism of the drill head is reversely rotated, the screw on the drill head side of the inner rod 4B is disconnected.
With the drill head retracted to an appropriate position as it is, the hydraulic motor 30 of the casing hand 2A is operated to rotate the drive roller 27 in the direction in which the screw of the inner rod 4B is loosened, and the hydraulic cylinder 21 of the slide unit 20 is operated. The casing hand 2A is moved in the direction in which the screw is removed. When the screw is removed, hydraulic cylinder 6
1, 62, 64, 21 and the torque actuator 66 are operated to move the inner rod 4B gripped by the casing hand 2A to the position of the tool rack 10 and the hydraulic cylinder 25 of the casing hand 2A is contracted to grip the inner rod 4B. Is opened and the inner rod 4B is stored in the tool rack 10.

[0054] In the following, in order to recover the inner rod 4B, 4B _f ... the by repetition of the same action.

[Recovery of Casing Tube] The drill head is advanced along the guide cell, the casing connecting portion of the drill head is aligned with the rear end of the casing tube 4A held by the clamp portion of the centralizer, and the drill head is rotated. The mechanism is started to rotate the screw head in the tightening direction, and the drill head is advanced to screw the screw portion of the drill head into the screw portion of the casing tube 4A. Stop the rotation of the drill head in the loosely coupled state and retract the drill head. Second casing tube 4A _f
Stop retracting the drill head where can be gripped by the centralizer clamp. If the second casing tube 4A _f is gripped by the clamp mechanism, and is rotated in the screw loosening direction while the first casing tube 4A is gripped by the gripping / rotating mechanism on the drill head side, the first casing tube 4A _f And the screw of the second casing tube 4A _f becomes loose.

The above-described operation is the recovery work on the punching machine side, and then the recovery work of the casing tube by this device is started. By the above operation, the casing connection portion of the drill head and the first and second casing tubes 4A,
The two screws on the 4A _f connection are loose, but the screws are still joined. First, with the parallel link hydraulic cylinder 32 extended and the rod hand 2B retracted, the hydraulic cylinder 25 is contracted to open the casing hand 2A, and the hydraulic cylinders 61, 62, 6
4, 21 and the torque actuator 66 are operated to operate so that the casing hand 2A is in contact with the casing tube 4A in the state of being coupled to the drill head.

The driven roller 29 of the casing hand 2A
When the casing tube 4A comes into contact with a and 29c, the hydraulic cylinder 25 is extended and the drive roller 27 at the tip of the casing hand arm 26 is pressed against the casing tube 4A, and the hydraulic cylinder 25 is extended to secure the casing tube 4A to the casing hand 2A. And hold.

In this state, when the drill head is retracted while the rotating mechanism of the drill head is rotated in the reverse direction, the screw on the drill head side of the casing tube 4A is disconnected.

With the drill head retracted to an appropriate position as it is, the hydraulic motor 3 of the casing hand 2A.
The hydraulic cylinder 21 of the slide unit 20 is operated to move the casing hand 2A in the direction of releasing the screw while rotating 0 in the direction of loosening the screw. When the screws are removed, the hydraulic cylinders 61, 62, 64, 21 and the torque actuator 66 are operated to move the casing tube 4A held by the casing hand 2A to the position of the tool rack 10 and the hydraulic cylinder 25 of the casing hand 2A is contracted. The casing tube 4A is released from the grip and the casing tube 4A is stored in the tool rack 10.

Thereafter, the casing tubes 4A, 4A _f, ... Are sequentially collected by repeating the same operation.

By the way, this device is most suitably used for a drill tool having a double pipe structure consisting of a casing tube and an inner rod, but even a single pipe rod is used with the rod hand 2B retracted. Don't
The single handed rod can be mechanically supplied / recovered by the casing hand 2A.

[0062]

As described above, the drill tools can be easily taken out one by one from the group of drill tools which are stacked in a dense state. Further, it becomes possible to supply the inner pipe to the drill tool attaching / detaching device or the like in a state of protruding by a predetermined amount to one side.

[Brief description of drawings]

FIG. 1 is an overall side view of a drill tool attaching / detaching device.

FIG. 2 is a plan view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is an enlarged side view of a handling unit.

FIG. 5 is an enlarged plan view of a handling unit.

FIG. 6 is an enlarged view of a casing hand.

FIG. 7 is an enlarged side view of a rod hand.

FIG. 8 is an enlarged plan view of a rod hand.

FIG. 9 is an enlarged front view of the beam unit.

FIG. 10 is an enlarged side view of the beam unit.

FIG. 11 is an enlarged view of a Y-axis drive unit.

FIG. 12 is an enlarged side view of a take-up hand.

FIG. 13 is an enlarged front view of the take-up hand.

[Explanation of symbols]

1 ... Automatic drill tool attaching / detaching device, 2 ... Handling unit, 2A ... Casing hand, 2B ... Rod hand,
3 ... Take-up unit, 4 ... Drill tool, 4A ...
Casing tube, 4B ... Inner rod, 5 ... Take-up hand, 6 ... Beam unit, 10 ... Tool rack, 20 ... Slide unit, 27 ... Drive roller, 33.34 ... Link, 39 ... Drive roller, 55
… Main frame, 66… Torque actuator, 70…
X-axis beam, 71 ... Y-axis beam, 72 ... Z-axis beam, 7
3 ... X drive unit, 74 ... Y drive unit,
75 ... Z drive unit, 90 ... Take-up frame (bracket) 91 ... Hydraulic cylinder (for slide control), 93 ... Roller frame (slide body), 95 ... Take-up arm (oscillating member), 95a ... Pressing end, 96
... Spring, 97 ... Hydraulic cylinder (for rocking control), 98 ...
Axis, 99 ... Hold head

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norio Otsubo 1-51-3 Matsubara, Setagaya-ku, Tokyo Daiichi Nagatomo Building Ohmic Co., Ltd.

Claims (2)

[Claims] 1. A bracket is fixed to an outer tube pressing member that abuts on an outer surface of an outer tube end portion of the outer tube so as to project laterally from a tip end of the outer tube pressing member, and the bracket is fixed to a lower surface side of the bracket. A slide body that is movable along the extension direction is provided, and a seesaw-shaped swinging member is provided along the extension direction of the bracket so as to be pivotally supported by a vertically extending piece fixed to the lower surface of the slide body, and An operation control means for controlling the swinging motion of the swinging member is provided on the arm of the swinging member on the tip end side in the bracket projecting direction, and the base end side arm of the swinging member is moved into the outer tube by the movement of the slide body. Simultaneously with the insertion, the base end side arm pushes out the inner pipe to the opposite side, and a pipe body gripping portion for holding the pipe wall portion of the outer pipe by the base end side arm inserted in the outer pipe and the outer pipe pressing member is provided. A double pipe type having Supply device of Rutsuru. 2. An X arranged in the X-axis direction with respect to a support.
X that holds the axial beam movably along the beam axis
An axis drive unit is fixed, and a Y-axis drive unit that holds a Y-axis beam arranged in the Y-axis direction at one end of the X-axis beam is movably along the beam axis direction. A Z-axis beam disposed in one end of the Z-axis direction in the Z-axis direction so as to be movable along the beam axis direction.
A double-pipe drill tool supply, characterized in that a shaft drive unit is fixedly provided, and that the Z-axis beam is used as an outer pipe pressing member at the lower end of the Z-axis beam to provide the pipe gripping portion according to claim 1. apparatus.