JPH09195697A - Lifting device for casing pipe of anchor drill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve expeditiousness and safety of an operation by lifting up a casing pipe after raising a clamp by means of a rearward motion of a drifter which moves in the longitudinal direction on a guide cell fitted to a traveling body so that it can be lifted up as well as make an inclined motion. SOLUTION: A guide cell 12, which is fitted to a traveling body so that it can be lifted up as well as make an inclined motion, has a drifter 13 movable in the longitudinal direction (horizontal direction) provided on its top and the end of the guide cell 12 is provided with a centralizer 13a for supporting a casing pipe 20. A hole is drilled by actuating the casing pipe 20 by the drifter 13. A clamp 18 is provided on one of the ends of a rope 17, which is guided by a pulley 15 of an arm member 15 fitted near the position where the casing pipe 20 of the guide cell 12 is supplied to and the other end is connected to the drifter 13. The casing pipe 20 lifted up by raising the clamp 18 clamping the casing pipe 20 by virtue of the rearward motion of the drifter 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing pipe lifting device in an anchor drill used when an anchor is placed on land for reinforcing soil.

[0002]

2. Description of the Related Art Generally, when reinforcing the soil, specifically, when reinforcing the soil having an inclined surface, an anchor made of PC steel wire or concrete is placed.
And when placing this anchor, anchor drill D
Is used. In this anchor drill D, as shown in the side view of FIG. 11, a guide cell 3 is mounted on a traveling body 1 so as to be tilted and lifted by a hydraulic piston group 2, and the guide cell 3 is moved in the longitudinal direction, that is, the front-back direction. It is configured with a movable drifter 4. In such an anchor drill, a pipe casing having a bit at its tip is actuated by the drifter 4 to make a hole, and then a PC steel wire, concrete milk or the like is filled.

By the way, in this anchor drill D, it is necessary to drill a hole to a depth of, for example, about 50 m, and in this case, the screw at the rear end of the pipe casing that is driven in first is screwed with the screw at the front end of the rear pipe casing. It is necessary to combine and connect. That is, when the pipe casing reaches a predetermined position, the drifter 4 is separated and moved backward, another casing pipe is transferred to a predetermined position on the guide cell 3, and the tip of this casing pipe and the rear end of the previous casing pipe are screwed. Together, they are connected and the rear end of the connected casing pipe is connected to the drifter 4 to continue drilling.

[0004]

However, the anchor drill D as described above has a problem in that the operation of placing and supporting the casing pipe to be connected on the cell guide 3 is performed manually. That is, since this casing pipe is usually stored near the ground, its length is 1.5 m to 2.0 m, and its weight is 60 to 90 kg, its lifting and placement work is not only labor-intensive but also dangerous. In addition, the working environment is not always good at the drilling site. Therefore, there is a problem that not only the working time is required, but also the work period cannot be shortened as a result.

[0005]

The present invention has been made to solve the above-mentioned conventional problems, and has the following structure. A) A guide cell 12 is attached to the traveling body 11 so as to be tiltable and can be elevated, and a drifter 13 that moves in the front-rear direction on the guide cell 12 is provided, and the casing pipe 20 is actuated by the drifter 13 to drill a hole. In the anchor drill, the backward movement of the drifter 13 raises the clamp 18 that holds the casing pipe 20 to lift the casing pipe 20.

B) Casing pipe 2 of guide cell 12
An arm member 15 is attached in the vicinity of a position for supplying 0, a clamp 18 is provided at one end of a rope 17 guided by a pulley provided on the arm member 15, and the other end of the rope 17 is connected to a drifter 13. . C) The rope 17 connected to the drifter 13 is looped around the conversion pulley and folded back, and then connected to the clamp 18 via the pulley provided on the arm member 15, and the conversion pulley is further moved in the front-back direction of the guide cell 12. Move to the clamp 18
The position of is adjusted.

D) A pipe receiver 21 is attached to the arm member 15 so that it can be raised and lowered in the extending direction of the guide cell 12. According to the lift device for the casing pipe 20 in the anchor drill configured as described above, the clamp 18 that holds the casing pipe 20 can be lifted by the backward movement of the drifter 13 without using a special drive device. And, preferably, by tilting the guide cell 12, the casing pipe 20 can be easily moved onto the guide cell 12.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a casing pipe lifting device in an anchor drill according to the present invention will be described below with reference to FIGS. 1 to 6. FIG. 1 is a side view of the anchor drill, FIG. 2 is a plan view thereof, and 12 is a guide cell mounted on the traveling body 11 so as to be tiltable and can be elevated.
A drifter 13 movable in the longitudinal direction (front-back direction) is provided on the guide cell 12, and a centralizer 13a for supporting the casing pipe 20 is provided at the tip of the guide cell. Further, on the side of the middle portion of the guide cell 12, first pulleys 14a to 14c are provided.
An arm member 15 having a and a second pulley 16 are arranged. A small crane is composed of these members.

More specifically, the arm member 15 is composed of a vertical member 15a and a horizontal member 15b as shown in FIG. 3, and is attached to the arm member 15 with the first pulleys 14a, 14b, 14c, and 2 and the guide cell 12 as shown in FIG.
The second pulley 16 is mounted on the support arm 12a provided on the side of the tip of the vehicle.
(Conversion pulley for changing the direction of the rope 17) is shown in Fig. 2.
Is attached so that it can be changed in the extending direction of the guide cell 12 in a predetermined range from the position shown by the solid line to the position shown by the dotted line.

The second pulley 16 moves back and forth along the guide cell 12 to move the casing pipe 20.
It is possible to adjust the position (height) of the clamp 18 that supports the. One end 17a of the rope 17 is fixed to a bracket 13b provided on a side portion of the drifter 13,
The other end 17b is attached to the tip of the lateral member 15b that constitutes the arm member 15 as shown in FIGS.
The movable pulley 19 and the first pulleys 14a, 14 attached to the
It is wound around b, 14c and the second pulley 16 (conversion pulley). Reference numeral 20 is a casing pipe, and 21 is a pipe receiver that can be raised and lowered in the extending direction of the guide cell 11.

The rope 17, one end of which is connected to the drifter 13 as described above, winds around the pulley 16 to form the pulleys 14a, 14a.
4b and 14c and forms a circuit for moving the movable pulley 19 up and down, but from the moving distance of the drifter 13, that is, the position where the casing pipe 20 is loaded to the position where the driving of the casing pipe 20 is completed. The moving distance corresponds to the lift distance of the movable pulley 19 and the clamp 18 supported by the movable pulley 19 or more. Since the moving distance of the drifter 13 is halved due to the insertion of the movable pulley 19 in the path of the rope 17, the position of the clamp 18 and the lift distance are checked in consideration of this point and each part is adjusted.

(Operation Method) In the anchor drill constructed as described above, the drifter 13 is moved to the foremost portion when the casing pipe 20 is operated (struck / rotated) by the drifter 13 to finish the drilling. On the other hand, since the rope 17 connected to the drifter 13 is sent out during this process, the clamp 18 descends to a position where the casing pipe 20 stored on the ground can be gripped (FIG. 5).

Next, the clamp 18 grips a substantially central portion of one casing pipe 20. Then, the drifter 13 is moved back from the state of FIG. 5 to the state of FIG. 6 to the original position. As the drifter 13 retracts, the rope 17 whose end is connected to the drifter 13 is pulled, and the casing pipe 20 is raised to a predetermined height while being held by the clamp 18 (FIG. 6, A).

Next, when the guide cell 12 is tilted as shown by the arrow A in FIG. 4, the arm member 15 is also tilted, and the clamp 18 is moved.
Since the casing pipe 20 gripped in step moves above the pipe receiver 21, it is set on the pipe receiver 21 by slightly advancing the drifter 13. And
When the tilting of the arm member 15 together with the guide cell 12 is returned to the original state, the casing pipe 20 comes to a position to be set in the drifter 13, so the casing pipe 20 is set to the support portion of the drifter 13 while adjusting the position of the drifter 13. .
And the pipe 20a in which the casing pipe 20 is already driven by operating the drifter 13 (FIG. 5, A)
It will be joined with.

When the joining of the casing pipes 20 is completed as described above, the pipe receiver 21 is tilted in the front-back direction of the paper surface of FIG. 3 and retracted to a position where it does not interfere with the anchor drill work. 7 to 10 show another type of arm member 15
In the second embodiment of the anchor drill using, the arm member 15 is composed of only the vertical member 15b, the first pulley 14d is attached to the upper end of the vertical member 15b, and The second pulleys 16a and 16b are attached to the attachment member 22 attached to the side surface.

The second pulleys 16a, 16b are conversion pulleys corresponding to the second pulley 16 in FIG. 2, and the drifter 12 moves when the positional relationship between the drifter 13 and the first pulley 14d does not match. The pulleys are arranged to satisfy the relationship between the distance and the lift distance of the casing pipe 20, and it is preferable to select and use the pulley as necessary.

As shown in FIG. 10, while the guide cell 12 is tilted, the casing pipe 20 is held by the clamp 18 which is descending as the drifter 13 advances, and the drifter 13 is retracted. 12
This pipe 20 is operated by moving the drifter 13 back and forth while returning the inclination so that the original state is restored (Fig. 8).
Is lifted and set on the pipe receiver 21. The state where the pipe 20 is set on the pipe receiver 21 is as shown in FIGS. 8, 9 and 10. And the drifter 1
3, the connecting operation of the pipe 20 is a driving operation.

[0018]

As is apparent from the above description, according to the casing pipe lift device in the anchor drill of the present invention, the one casing pipe 2 is moved from the storage position of the casing pipe 20 by the backward movement of the drifter 13.
0 on the guide cell 12 and the guide cell 12
Since it can be set at a predetermined position by the tilting operation, there is an effect that the quickness and safety of the work can be significantly improved and the construction period can be shortened.

[Brief description of the drawings]

FIG. 1 is a side view of an anchor drill.

FIG. 2 is a plan view of an anchor drill.

FIG. 3 is a side view of a small crane.

FIG. 4 is an enlarged view of a main part of the small crane of FIG.

5 is a side view showing the state of the anchor drill at the end of drilling, and FIG. 5 is a plan view corresponding to FIG.

6A is a side view showing a state of an anchor drill that lifts a pipe, and FIG. 6B is a plan view corresponding to FIG.

FIG. 7 is a side view of an anchor drill using another small crane.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a side view showing a state in which a pipe is supported on a pipe receiver.

FIG. 10 is a front view showing a state in which a guide cell is tilted to lift a pipe, and FIG. 10 is a side view showing a state in which the pipe is supported on a pipe receiver.

FIG. 11 is a side view showing a conventional anchor drill.

[Explanation of symbols]

11 Traveling Body 12 Guide Cell 12a Supporting Arm 13 Drifter 13a Centralizer 13
b bracket 14a-14d 1st pulley 15 arm member (small crane) 15a vertical member 15b lateral member 16, 16a,
16b Second pulley 17 Rope 18 Clamp 19 Moving pulley 20 Casing pipe 21 Pipe receiver

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kozo Oishi 3-1-1 Tam, Tamano-shi, Okayama Mitsui Engineering & Shipbuilding Co., Ltd. Tamano Plant (72) Inventor Nozomi Nakayama 3-1-1 Tamama, Okayama Prefecture Mitsui Engineering & Shipbuilding Co., Ltd. Tamano Works (72) Inventor Katsumi Maeda 5-6 Tsukiji, Chuo-ku, Tokyo Mitsui Engineering & Ships Co., Ltd. (72) Masaichi Fujita 15-17 Sakuragaoka-cho, Shibuya-ku, Japan Japan Basic Technology Co., Ltd. (72) Inventor Akira Higuchi 2-35 Shinozaki-cho, Edogawa-ku, Tokyo Higuchi Gikko Co., Ltd. (72) Inventor Yuji Kawashima 7-25-13-301 Umeda, Adachi-ku, Tokyo Rui Engineering Co., Ltd. In the company

Claims (4)

[Claims] 1. A guide cell 12 is mounted on a traveling body 11 so as to be tiltable and can be raised and lowered, and a drifter 13 is provided which moves on the guide cell 12 in the front-rear direction. The drifter 13 operates a casing pipe 20 to drill a hole. In the anchor drill, the lifting device for the casing pipe in the anchor drill, wherein the backward movement of the drifter 13 raises the clamp 18 that holds the casing pipe 20 to lift the casing pipe 20. 2. The casing pipe 20 of the guide cell 12
The arm member 15 is attached in the vicinity of the position for supplying the electric power, the clamp 18 is provided at one end of the rope 17 guided by the pulley provided on the arm member 15, and the other end of the rope 17 is connected to the drifter 13. Lifting device for the casing pipe described. 3. A rope 17 connected to the drifter 13.
The arm member 15 after wrapping around and turning back through the conversion pulley
The casing pipe lifting device according to claim 2, wherein the lifting device is connected to the clamp 18 via a pulley provided on the casing, and further, the conversion pulley is moved in the front-back direction of the guide cell 12 to adjust the position of the clamp 18. . 4. The lift device for a casing pipe according to claim 2, wherein the arm member 15 is provided with a pipe receiver 21 which can be raised and lowered in the extending direction of the guide cell 12.