JPH0441755B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for inspecting power lines such as gas pipes, water pipes, electricity, light, etc. using a screw auger (hereinafter abbreviated as auger) from the side of a newly constructed or existing vertical hole. , relates to a device for attaching and detaching a supplementary screw auger in a horizontal hole excavation device for excavating a horizontal hole in which pipes such as signal line accommodation pipes are buried.

(Prior Art) The present inventors have already developed an apparatus for excavating a horizontal hole for underground burial while adding an auger in a screw type manner. This horizontal hole drilling equipment includes a rotary drive device that has a rotary chuck device that grips the auger on an elevating frame that moves up and down along the vertical hole, a traversing device that reciprocates the rotary drive device back and forth, and a hoisting device that moves the leading auger when the auger is attached or removed. It is equipped with a fixed chuck device that grips the connection part, and excavates a horizontal hole underground while connecting the auger in a screw type manner.

However, according to the conventional configuration of this equipment, when excavating or withdrawing an auger, the lifting frame is pulled up each time an auger is added or withdrawn, and the auger is gripped by a rotary chuck on the ground or the auger is removed. You will have to repeat the process of removing the lifting frame and lowering it to the bottom of the vertical hole again.
There was a problem that it took time to attach and detach the auger.

(Problems to be Solved by the Invention) In view of the above-mentioned problems, an object of the present invention is to provide an auger attachment/detachment device that makes it possible to attach and detach an auger while lowering an elevator frame to the bottom of a vertical hole. shall be.

(Means for solving the problem) In order to achieve this object, the present invention provides a rotary drive device having a rotary chuck device for gripping an auger on an elevating frame that is raised and lowered along a vertical hole, and a rotary drive device that includes a rotary chuck device for gripping an auger. A traverse drilling device that is equipped with a traverse device that reciprocates back and forth and a fixed chuck device that grips the connecting part of the leading auger when attaching and detaching the auger, and that excavates a horizontal hole underground while connecting the auger with a screw type. It consists of an auger storage device and an auger displacement device attached to the lifting frame, and the auger storage device consists of one or more belts or chains installed vertically on the side of the rotary drive reciprocating part on the lifting frame. The auger displacement device is composed of an endless strip, a motor for rotating the endless strip, and auger supports provided at equal intervals on the endless strip.
A movable base is attached below the auger storage device in the elevating frame and is attached to be movable forward and backward by a drive device in a direction perpendicular to the reciprocating direction of the rotary drive device; an arm mounted so as to be raised and lowered by
It is characterized by comprising an auger gripper attached to the tip of the arm so as to be opened and closed by a drive device, and when excavating, the auger is placed in advance on a plurality of auger supports. By lowering the endless strip one step and gripping the auger with the auger gripping tool, folding the arm and positioning it in front of the rotary chuck so that it is gripped by the rotary chuck, the rotary chuck can be moved without raising or lowering the elevating frame. can be held by When pulling out the auger, the auger is gripped by the auger gripping tool, the auger is removed from the rotary chuck, the arm is erected, and the auger is released on the auger support to place the auger on the support. By repeating the operation of turning the endless strip one step and pulling up the support on which the auger is placed, the auger can be removed without raising or lowering the elevating frame.

(Example) An example of the present invention will be described below with reference to the drawings.
1 to 3 show a horizontal hole drilling device to which the present invention is applied, and FIG. 4 shows an auger used in the horizontal hole drilling device. As shown in Figure 4,
The auger 11 that performs advance excavation has a grip portion 11a at its tail end that is gripped by a chuck device, which will be described later.
A female threaded portion 11c is formed inside the grip portion 11a,
The tip has a male threaded portion 11b that is screwed into the female threaded portion 11c of the preceding auger 11, and a right-handed screw blade 11d is provided on the outer periphery.

In the horizontal hole drilling equipment shown in FIGS. 1 to 3, 13 is a casing inserted into the vertical hole 4, and the lifting frame 15 moves the roller 16 along the left and right guide rails 14 provided in the casing 13. It is attached so that it can be raised and lowered freely. The lifting frame 15 is
It consists of a gate-shaped frame 17 and a guide frame 19 attached to the left and right columns of the gate-shaped frame 17 by connecting both sides of the gate frame 17 so as to be tiltable using pins 18a and 18b. The turnbuckle 20 for adjusting the inclination angle of No. 19 is connected to pins 21a and 2 at both ends.
1b, and by adjusting the turnbuckle 20, the direction of the guide frame 19 is changed, and the direction of the auger 11 is tilted as shown in a in FIG. 2, so that an inclined horizontal hole can be excavated. .

A pair of guide rails 22, 22 are fixed to the guide frame 19 in its longitudinal direction, and grooves provided on the outer periphery of guide rollers 23 attached to the four corners of the lower surface of the auger rotation drive device 24 are connected to the guide rails. 22
By fitting into the auger rotation drive device 24
is positioned and moved by the guide rail 22.

As shown in FIG. 3, a traverse hydraulic motor 25 for traversing the auger rotation drive device 24 is installed on the guide frame 19, and a sprocket 26 rotated by the hydraulic motor 25 and the guide frame 1
Sprockets 27 and 28 installed near both ends of 9
The auger rotation drive device 24 is caused to move laterally along the guide rail 22 by connecting the chain 29 that is hung on the auger rotation drive device 24 to the connection portion 30 provided on the side of the auger rotation drive device 24 and operating the hydraulic motor 25. It's getting old.

The auger rotation drive device 24 has an auger rotation hydraulic motor 24a and a rotary chuck device 24b, and has a built-in mechanism (not shown) for operating the rotary chuck device 24b. The details of the rotary chuck device 24b are not shown in the figure, but like a rotary chuck device used for gripping a rod-shaped workpiece in a machine tool, for example, the rotary chuck device 24b is a rotary chuck device that is radially attached to a rotating body rotated by the hydraulic motor 24a. A chuck claw is slidably fitted into a plurality of wide-bottomed grooves formed in the groove.

A fixed chuck device 31 for adding an auger is attached to the front end of the guide frame 19. The fixed chuck device 31 includes a pair of left and right hydraulic cylinders 32 and 33 pinned to the guide frame 19 in the front and back direction, and a grip portion 11 of the auger 11.
pawls 34 and 35 that are movably mounted in a direction perpendicular to the axial direction of the auger 11 so as to grip and release the auger 11, and the hydraulic cylinder 3.
The movement of the piston rods 2 and 33 is controlled by the claws 34 and 35.
The gripping portion 11a can be gripped and released by extending and contracting the hydraulic cylinders 32 and 33, respectively.

As the elevating device for the elevating frame 15, a device in which an elevating motor is mounted on the elevating frame 15 or a hydraulic cylinder can also be used, but in this example, as shown in FIGS. 1 and 2, an example using a winch 38 is shown. . That is, 3
Reference numeral 9 denotes a stand installed on the casing 13, and the elevating frame 15 is connected to the wire rope 4 on the stand 39.
winch 38 and operation panel 40 for raising and lowering via
It is equipped with a hydraulic device 41 such as a valve and a valve. Further, the frame 39 has a guide rail 14A continuous to the guide rail 14. Further, in FIGS. 1 and 2, 80 is an underground pipe.

Next, the auger attachment/detachment device according to the present invention will be explained. The auger attaching/detaching device is attached to the elevating frame 15, and is attached to the auger storage device 44.
and an auger shifting device 45 for moving the auger 11 between the storage device 44 and the mounting position relative to the rotary chuck device 24b.

The auger storage device 44 is configured as follows. As shown in FIGS. 1, 3, and 5, a pair of vertical frames 47 are vertically connected to one vertical column of the portal frame 17 constituting the lifting frame 15 via upper and lower U-shaped mounting frames 46. , 47 are provided, and these vertical frames 4
Two upper and lower shafts 48, 49 are rotatably mounted between 7, 47, and sprockets 50, 51 and 52, 53 are fixed to both ends of each shaft 48, 49, respectively. Chains 54, 54 are hung around, and arc-shaped auger supports 5 are provided on the chain 54 at equal intervals over the entire circumference.
5 is attached, and the upper shaft 48 is configured to be rotated by a constant length by a step motor 56 attached to the vertical frame 47. This chain 54 is
The guide frame 19 may be mounted so as to be tiltable depending on the inclination of the guide frame 19.

On the other hand, as shown in FIG. 6, the auger displacement device 45 has a pair of rails 59, 59 below the auger storage device 44 in the guide frame 19, that is, on the side of the part where the guide rail 22 is installed. The board 60 is mounted such that the rail 59 is perpendicular to the guide rail 22, and the board 60 is
0, a movable base 58 having sliding legs 61 slidably engaged with the rail 59 is mounted so as to be moved forward and backward by a hydraulic cylinder 57, and a pair of brackets are mounted on the movable base 58. 62, 62 are provided, and a shaft 63 is rotatably attached to the brackets 62, 62.
, and arms 64, 64, which are parallel to each other, are fixed to both ends of the shaft 63.
A pin 67 is attached to the tip of the arm 64 so that it can be raised and lowered by the expansion and contraction of a hydraulic cylinder 66 installed between a bracket 65 and a movable table 58.
An arc-shaped plate 68 attached to the center so that it can be opened and closed freely.
Attach the auger gripping tool 68 consisting of a and 68b,
A hydraulic cylinder 69 is provided as an opening/closing drive device for the auger gripping tool 68, the head of which is pinned to a bracket 70 provided on the shaft 63, and a piston rod 69a and a bracket 71 provided on each arc plate 68a, 68b are connected to an arm 72. , 73, both ends of which are connected with pins.

This device can be used as follows. With the elevating frame 15 pulled up to the top as shown by A-A in FIG. (see Figure 2) is attached to the rotary chuck device 24b, and the front and rear ends of the auger 11 are attached to multiple sets of auger supports 55 on one side of the auger storage device 44, that is, on the side of the rotary drive device 24. is placed, the winch 38 is operated in the lowering direction, and the guide rail 14 is
A locking piece (not shown) attached to the portal frame 17 to a stopper with a buffer function (not shown) attached to the lower part of the
The elevator frame 15 is lowered until it abuts and is locked.

Next, the hydraulic motor 25 is operated so that the rotary drive device 24 moves forward, the auger 11A is inserted into the opening 13a of the casing 13, and the hydraulic motor 24a of the rotary drive device 24 is operated in the excavation direction (in this example, to the right). (rotation) to excavate a horizontal hole. In this case, excavated earth and sand are discharged into the vertical hole 4. After moving the rotary drive device 24 forward to the foremost position, the auger 11A is removed from the rotary chuck device 24b, the motor 25 is reversed, and the rotary drive device 2 is moved forward.
Move 4 back.

Next, as shown in FIG. 7A, with the movable base 58 in the forward position and the arm 64 in the upright position, the step motor 56 moves the chain 54 to one stage, that is, the upper and lower auger supports 55. By turning the auger 1 at the interval
1 is lowered and the hydraulic cylinder 69 is extended, the auger 11 is gripped by the auger gripping tool 68, and then the hydraulic cylinder 66 is contracted and the arm 64 is brought down together with the hydraulic cylinder 69 and the auger 11 as shown in b. to position the auger 11 in front of the center of the rotary chuck device 24b. In this case, by using an elastic member for the auger support 55, the auger support 55 will not be bent by the auger 11 during the operation of folding down the arm 64, and will not hinder the movement of the auger 11. Also, auger 11
After gripping with the gripper 68, the chain 54 may be lowered by one level or slightly lowered. After setting the auger 11 in front of the rotary chuck device 24b with the hydraulic cylinder 69 in the position shown in c, the motor 25 is rotated in the forward direction to place the auger 1 in the center of the rotary chuck device 24b.
1, and the rotary chuck device 24
The grip part 11 is gripped by b. And Figure 7B
As shown in FIG.
is contracted to move the movable base 58 backward, and then the hydraulic cylinder 68 is extended to raise the arm 64 as shown in d and retreat.

Then, the gripping portion 11a of the leading auger 11A is gripped by the fixed chuck device 31, and the rotary drive device 24 is moved forward and operated in the excavation direction (rotated clockwise). The male threaded portion 11b is screwed into the female threaded portion 11c at the tail end of the auger 11A. Then, excavation is performed in the same manner as above. After excavating one auger, the auger 11 is left in the ground, the rotary drive device 24 is retreated, and the hydraulic cylinder 57 is extended.
As shown in FIG. 1A, the auger gripping tool 68 is advanced to a position where it can grip the next auger, and the same operations as above are used to grip the auger 11, set it on the rotary chuck device 24b, and add the auger. Repeat this operation to drill a horizontal hole.

The length of the horizontal hole to be excavated is long, and the auger storage device 4
If the number of augers stored in the frame 4 is insufficient, the lift frame 15 is pulled up by the winch 38 and lowered again to continue the work.

After a horizontal hole of a predetermined length is excavated by performing excavation with a predetermined number of augers 11 in this manner, the auger 11 is rotated in the same direction as described above using the rotary drive device 24, or while the auger 11 is being rotated or not. The rotation device 24 is moved backward one auger at a time, and the grip portion 11a of the leading auger 11 is gripped by the fixed chuck device 31, and the rotary chuck device 2
The auger 11 held by the auger 4b is rotated in the opposite direction to unscrew it, and the hydraulic cylinder 57 is extended from the state shown by the solid line in FIG.
At the same time, the hydraulic cylinder 69 is extended and the auger 11 is held by the auger gripping tool 68, and then the auger 11 is moved from the rotary chuck device 24b.
is released, the rotary drive device 24 is moved backward, the auger is removed from the rotary chuck device 24b, the hydraulic cylinder 66 is extended to raise the arm 64 as shown by the solid line in FIG. 7A, and the hydraulic cylinder 69 is The auger 11 is released from the auger gripping tool 68 by contraction, and the chain 54 is rotated by one step in the opposite direction to the above, and the front and rear ends of the auger 11 are placed on the auger support 55. By repeating such an operation, the auger 11 is sequentially removed without raising and lowering the elevating frame 15.

The operation of each of the hydraulic cylinders 57, 66, 69, etc. can be performed manually by operating the operation valve of the control valve of each hydraulic cylinder using the operation panel 40. In addition, a position detector such as a limit switch that detects the positions of the hydraulic cylinders 57, 66, 69 and the auger support 55;
It is also possible to perform automatic control by providing an automatic control device that performs control operations based on the detected output. In addition, the above-mentioned hydraulic cylinder 5
Instead of 7, 66, 69, a hydraulic or electric motor can be used as the drive device.

Further, the present invention provides a method for removing the casing 13 after excavating the vertical hole.
Instead of burying the manhole, it is also possible to install a casing or frame in an existing manhole.

(Effects of the Invention) As described above, the present invention includes an auger storage device that stores a plurality of augers in an elevator frame, and an auger shift device that moves the augers between the storage device and the rotary chuck device. As a result, horizontal hole excavation of a length corresponding to the number of augers stored in the auger storage device can proceed without raising and lowering the elevating frame, and when pulling out the auger, the auger can be The auger that has been pulled out can be stored in the storage device, and the pulling out can proceed without raising and lowering the lifting frame. Therefore, according to the present invention, the horizontal hole excavation work can be completed efficiently and in a short time.

[Brief explanation of the drawing]

FIG. 1 is a vertical front view showing a horizontal hole drilling device equipped with an embodiment of the auger attachment/detaching device according to the present invention, FIG. 2 is a vertical side view thereof, FIG. 3 is a plan view showing the main parts thereof, and FIG. 4 5 is a side view showing an example of an auger used in the present invention, FIG. 5 is a view taken in the direction of arrow A in FIG. 1,
FIG. 6 is a perspective view showing the auger displacement device of the embodiment, and FIGS. 7A and 7B are explanatory views of the operation of the embodiment.

Claims (1)

[Claims] 1. A rotary drive device that has a rotary chuck device that grips the screw auger on an elevating frame that moves up and down along the vertical hole, a traverse device that reciprocates the rotary drive device back and forth, and a connection of the leading screw auger when attaching and detaching the auger. A horizontal hole drilling device that is equipped with a fixed chuck device that grips the part, and that excavates a horizontal hole underground while attaching a screw auger in a screw type.
It consists of an auger storage device and an auger displacement device attached to the lifting frame, and the auger storage device consists of one or more belts or chains installed vertically on the side of the rotary drive reciprocating part on the lifting frame. It is composed of an endless strip, a motor that rotates the endless strip, and auger supports provided at equal intervals on the endless strip, and the auger displacement device is installed below the auger storage device in the lifting frame. a movable base mounted so as to be movable back and forth by a drive device in a direction perpendicular to the reciprocating direction of the rotary drive device; and an arm mounted on the movable base so as to be raised and lowered by the drive device. 1. An auger attachment/detachment device for a horizontal hole drilling device, comprising: an auger gripper attached to the tip of the arm so as to be opened and closed by a drive device.