JPS6363886A - Auger detachable device for cave excavator - Google Patents

Abstract

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

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is capable of inspecting power lines such as gas pipes, water pipes, electricity, and light by using a screw auger (hereinafter abbreviated as auger) from the side of a newly constructed or existing vertical hole. The present invention relates to a device for attaching and detaching a bare-feed type screw auger in a horizontal hole excavation device for excavating a horizontal hole for burying pipes such as signal line accommodation pipes.

(Prior art); (The inventors have already developed a device that excavates a horizontal hole for underground pipes by adding an auger in a screw type. This horizontal hole drilling device has an elevator frame that moves up and down along the vertical hole. a rotary drive device having a rotary chuck device for gripping the auger; and a traversing device for reciprocating the rotary drive device back and forth;
It is equipped with a fixed chuck attachment that grips the connecting part of the preceding auger when attaching and detaching the auger, 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this equipment, when excavating or withdrawing an auger, the lifting frame is pulled up each time an auger is added or withdrawn, and the landowner has to have a rotating chuck grip the auger or remove the auger. There was a problem in that it took time to attach and detach the auger because the operation of removing the auger and lowering the elevating frame to the bottom of the vertical hole had to be repeated.

(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 Problems) 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; A horizontal hole drilling device that is equipped with a traversing device that reciprocates the auger 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 screwing the auger. It consists of an auger storage device and an auger displacement device that are attached to the lifting frame, and the auger storage device includes:
an endless strip consisting of one or more belts or chains provided vertically on the side of the reciprocating part of the rotary drive device on the lifting frame; a motor for rotating the endless strip; The auger shifting device is attached below the auger storage device in the elevating frame, and is movable back and forth by a drive device in a direction perpendicular to the reciprocating direction of the rotary drive device. A movable base is mounted on the movable base, an arm is mounted on the movable base so as to be raised and lowered by a drive device, and an auger grip is attached to the tip of the arm so as to be opened and closed by the drive device. When excavating, the auger is placed in advance on a plurality of auger supports, the endless strip is lowered one step, the auger is gripped by the auger gripper, and the arm is By folding the auger and positioning it in front of the rotary chuck so that the rotary chuck can grip it, the auger can be gripped by the rotary chuck without raising or lowering the elevating frame. When pulling out the auger, the auger is held 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 and form an endless strip. The auger can be removed without raising or lowering the elevating frame by turning the auger one step and pulling up the support on which the auger is placed.

(¥Example) An embodiment of the present invention will be described below with reference to the drawings.

Figures 1 to 3 show a horizontal hole drilling device to which the present invention is applied, and Figure 'A4 shows a field I:l in the horizontal hole drilling device.
+←S+ -S9-, + + Compensation A ML-壬+Hirashi 1 Preliminary excavation is performed.
A female threaded portion 11c is formed inside 1a, and a male threaded portion 11 is screwed into the female threaded portion 11C of the preceding auger 11 at the tip.
b, and a right-handed screw blade lid 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 elevating frame 15 is composed of a portal frame 17 and a guide frame 19 attached to the left and right rods of the portal frame 17 by connecting both sides thereof so as to be tiltable by means of bins 18a and 18b. A turnbuckle 20 for adjusting the inclination angle of the guide frame 19 is attached to the side of the guide frame 19 by connecting both ends with pins 21a and 21b.By adjusting the turnbuckle 20, the direction of the guide frame 19 can be changed and the auger can be adjusted. 11 direction as the second
It is tilted as shown in a in the figure 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 the auger rotation drive device 2
The auger rotation drive device 24 is positioned and moved by the guide rail 22 by fitting the grooves provided on the outer periphery of the guide roller 23 attached to the four corners of the lower surface of the auger 4 into the guide rail 22. There is.

As shown in FIG. 3, a traversing hydraulic motor 25 for traversing the auger rotation drive m and 24 is installed on the guide frame 19, and the sprocket 26 rotated by the hydraulic motor 25 and the guide frame The chain 29, which is hung around the sprockets (27 and 28) attached near both ends of the auger rotation drive device 24, is connected to the connection part 30 provided on the side of the auger rotation drive device 24, and the hydraulic motor 25 is operated to drive the auger rotation. A device 24 is adapted to traverse along the guide rail 22.

The auger rotation drive device 24 includes an auger rotation hydraulic motor 2
4a and a rotary chuck device 24b, and also incorporates a mechanism (rA not shown) for operating the rotary chuck device 24b. Although details of the rotary chuck device 24b are not shown in the figure, it is a rotary body rotated by the hydraulic motor 24a, such as a rotary chuck device used for gripping a rod-shaped workpiece in a machine tool. A chuck claw is slidably fitted into a plurality of wide-bottomed grooves formed radially in the chuck.

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 has a pair of left and right hydraulic cylinders 32 and 33 pinned to the guide frame 19 in the front-rear direction, and a grip 011a of the auger 11 so that the grip 011a of the auger 11 can be gripped and released. pawls 34, 35 mounted so as to be movable in a direction perpendicular to the axial direction of the hydraulic cylinder 32;
．． It consists of link mechanisms 36 and 37 that transmit the movement of the piston loft of 33 to the pawls 34 and 35, respectively, and by expanding and contracting the hydraulic cylinders 32 and 33, the grip part 1
1a can be grasped and released.

For raising and lowering the lifting frame 15, a lifting motor mounted on the lifting frame 15 or a hydraulic cylinder can also be used, but in this example, as shown in FIGS. 1 and 2, a winch 38 is used. That is, 39 is a stand installed on the casing 13, and on the stand 39, a winch 38 for raising and lowering the elevating frame 15 via a wire lobe 43, an operation panel 40, and a hydraulic device 41 such as a valve are mounted. are doing. Further, the frame 39 has a guide rail 14A continuous to the guide rail 14. In addition, in Figures 1 and 2, 80
is an underground pipe.

Next, the auger attachment/detachment device according to the present invention will be explained. The auger attachment/detachment device is attached to the elevating frame 15 and includes an auger storage device 44 and an auger shift device 2245 that moves the auger 11 between the storage device 44 and the mounting position 3 relative to the rotary chuck device 24b. Become.

The auger storage device 44 is configured as follows. As shown in Figure 1, Figure 3 and :iSS diagram, the lift frame 1
5, a pair of vertical frames 47.47 are installed vertically through the frame 46, and two upper and lower frames are installed between these vertical frames 47.47. axis 48,4
Attach sprockets 7) 50.51 and 52.53 to both ends of each shaft 48 and 49 so that they can rotate freely, and hook and turn chains 54 and 54 to the upper and lower sprockets 50.52 and 51.53, respectively. Arc-shaped auger supports 55 are attached to the chain 54 at regular intervals over the entire circumference, 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. The chain 54 may be attached so that it can be tilted according to 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 and 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 connected to the rail 59
A movable base 58 is mounted on the base plate 60 so as to be perpendicular to the guide rail 22, and has a sliding leg 61 slidably engaged with the rail 59. The movable base 5 is installed so that it can move forward and backward.
A pair of brackets 62 and 62 are provided on top of 8, and the brackets 62 and 62 are rotatable! ti+63 is attached, and arms 64 and 64 that are parallel to each other are fixed to both ends of the shaft 63, and the arms 64 are connected to the bracket 65 provided on the shaft 63.
A hydraulic cylinder 66 installed between the arm 64 and the movable table 58 expands and contracts, and the tip of the arm 64 has a
An arcuate plate 6 attached to be openable and closable around a pin 67
An auger gripping tool 68 consisting of 8a and 68b is attached, and a hydraulic cylinder 69 is used as an opening/closing drive device for the auger gripping tool 68.
a bracket 7 having a head thereof mounted on the shaft 63;
0, and the piston rod 69a and each arcuate plate 68
a, 68b and the arm 72.7.
3, 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 in FIG. 2
The auger 11 is attached to the rotary chuck device 24b, and the auger 11 is attached to a plurality of sets of auger supports 55 on one side of the auger storage device 44, that is, on the rotary drive device 24 side. Place the end on the winch 3
8 in the lowering direction, and the portal frame 1 is placed on a stopper with a buffer function (not shown) attached to the lower part of the guide rail 14.
The lifting frame 15 is lowered until a locking piece (not shown) attached to the frame 7 comes into contact with the locking piece and is locked.

Next, the hydraulic motor 25 is operated so that the rotary drive bag 24 moves forward, the auger IIA 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, (clockwise rotation) to excavate a horizontal hole. In this case, excavated earth and sand are discharged into the vertical hole 4. After the rotary drive device 24 is advanced to the foremost position, the auger IIA is removed from the rotary chuck device 24b, the motor 25 is reversed, and the rotary drive device 24 is moved backward.

Next, as shown in FIG. 7(A), with the movable base 58 in the forward position and the arm 64 in an erect state, the chain 54 is moved to one stage by the step motor 56, that is, the auger support 55 By turning the vertical interval of b
The auger 11 at the position is lowered, and the hydraulic cylinder 69
By extending the auger 11, the auger gripping tool 6
8, and then contract the hydraulic cylinder 66 to bring down the arm 64 together with the hydraulic cylinder 69 and the auger 11 as shown in b, and the auger 11 is moved to the rotating chuck device 2t2.
Position it in front of the center of 4b. 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. After being gripped by the tool 68, the chain 54 is lowered one step or slightly? It may also be possible to perform other actions. After setting the auger 11 in front of the rotary chuck device a24b with the hydraulic cylinder 69 in the position shown in C, the motor 25 is rotated in the normal direction to place the grip portion 11a of the auger 11 in the center of the rotary chuck device 24b. is fitted, and the grip portion 11 is gripped by the one-turn chuck device 24b. And as shown in Figure 7(B),
The hydraulic cylinder 69 is contracted to open the auger grip 68, the hydraulic cylinder 57 is contracted to move the movable base 58 backward, and then the hydraulic cylinder 66 is extended to open the arm 6.
4 stand up as shown in d and retreat.

Then, the gripping portion 11a of the leading auger IIA is gripped by the fixed chuck device δ31, and the rotary drive device 24 is moved forward and operated in the excavation direction (rotated clockwise). 11b is screwed into the female threaded portion 11c at the tail end of the auger IIA. and,
Excavation is carried out in the same manner as above. After one auger has dug, 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. m1 (A). Then, move the auger gripping tool 68 forward to a position where it can grip the next auger, and use the same operation as above to grip the auger 11 and set it on the rotary chuck device 2224b.
The horizontal hole is excavated by repeating this operation of adding additional material.

If the length of the horizontal hole to be excavated is long and the auger stored in the auger storage device 44 is insufficient, the elevating 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 by the rotary drive device 24, or is not rotated. The rotary drive device 24 is moved backward one auger at a time, and the grip part 1 of the leading auger 11 is
1a is gripped by the fixed chuck device m31, the auger 11 gripped by the rotating chuck device 24b is reversely rotated to unscrew it, and the hydraulic cylinder 57 is extended from the state shown by the solid line in FIG. 7(B). The auger gripping tool 68 is protruded, the hydraulic cylinder 69 is extended, and the auger 11 is gripped by the auger support 68, and then the auger 11 is released from the rotary chuck device 24b and the rotary drive device 24
The auger is pulled out 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. 7(A), and the hydraulic cylinder 69 is contracted to grip the auger. The auger 11 is released from the tool 68, the chain 54 is rotated 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 hydraulic cylinder 57, 66, 693 is performed by changing the control valve of each hydraulic cylinder to the operation panel 4.
This can be done manually by operating 0. In addition, automatic control can be performed by providing a position detector such as a limit switch that detects the positions of the hydraulic cylinders 57, 66, 69 and the auger support 55, and an automatic control device that performs control operations based on the detected output. is also possible. In addition, the above-mentioned hydraulic cylinder 57.6
Instead of 6.69, a hydraulic or electric motor can be used as the drive.

Further, according to the present invention, instead of burying the casing 13 after excavating a vertical hole, it is also possible to perform the work by attaching a casing or a frame to an existing manhole.

(Effects of the Invention) As described above, in the present invention, for each auger storage device in which a plurality of augers are not stored in the lifting frame, an auger shift device is provided to move the auger 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 work 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 longitudinal sectional front view showing a horizontal hole drilling equipment δ equipped with an embodiment of the auger attachment/detaching device according to the present invention, FIG. 2 is a longitudinal sectional side view thereof, and FIG. FIG. 4 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 above embodiment, and FIG. , (B) are operation explanatory diagrams of the embodiment.

Claims (1)

[Claims] 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 gripping part of the leading screw auger that grips the connection part of the leading screw auger when attaching and detaching the auger. The horizontal hole drilling device is equipped with a fixed chuck device for excavating a horizontal hole in the ground while attaching a screw auger in a screw type. The device includes an endless strip consisting of one or more belts or chains vertically provided on the side of the rotary drive reciprocating section on the lifting frame, a motor for rotating the endless strip, and a motor for rotating the endless strip. and auger supports provided at equal intervals, and the auger shift device is attached below the auger storage device in the elevating frame, and is moved back and forth by a drive device in a direction perpendicular to the reciprocating direction of the rotary drive device. A movable base mounted on the movable base so as to be freely movable, an arm mounted on the movable base so as to be raised and lowered by a drive device, and an auger grip attached to the tip of the arm so as to be opened and closed by the drive device. An auger attachment/detachment device for a horizontal hole drilling device, characterized by comprising: