JPH0721626Y2 - Pull-out tool for driving member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pull-out tool for a driving member. More specifically, the present invention relates to a pulling tool with excellent work safety that can easily and effectively pull out a soil stop driving pipe or the like.

(Conventional technology and its problems) Conventionally, in the foundation work of a construction site, the ground has been dug down and the reinforcing bars and the like have been laid down, but at this time, the vertical surface of the dug down ground collapses. To prevent this, apply a plate material, etc. on a vertical surface and hammer in a zinc-plated or chrome-plated iron pipe at a distance of about 60 cm to 90 cm so that the plate material is supported and soiled. It is usually done. This pipe is pulled out after the foundation work is completed.

It is not so easy to pull out these pipes that have been driven into the ground. Until now, these pipes were pulled out by biting a chuck to the pipes on the surface of the earth and pulling them up with a wire. However, in the case of such a conventional method, the engaged chucks are easily disengaged and often scattered around, which is not only dangerous to the operator but also difficult to improve the working efficiency.

The purpose of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a simple withdrawal means having excellent work efficiency and work safety.

(Means for Solving the Problems) As a means for solving the above problems, the present invention has a ring-shaped body that has a tongue piece and that inserts a driving member into the hollow portion.
It is composed of a plate-shaped body having a curved portion and a hooking portion which are in contact with the outer periphery of the driving member at both ends thereof, and the plate-shaped body is rotatably supported by a ring-shaped tongue piece. A pulling tool for a driving member is provided.

The attached drawings show an example of this invention.
First, as shown in FIG. 1, in the extraction tool of the present invention, the tongue piece (2) is arranged on the ring-shaped body (1), and the bending portion (3) and the hooking portion (4) are provided at both ends. And a plate-like body (5) included in the section.

The end of the tongue piece (2) of the ring-shaped body (1) and the plate-like body (5) are connected by a connecting means (6) such as a pin or a caulking bolt, and the plate-like body (5) is rotated. I am free. Insert a driving member into the hollow portion (7) of the ring-shaped body (1),
The curved portion (3) is brought into contact with the outer periphery of the driving member, and the wire is connected to the hooking portion (4) via a hook or the like and pulled.

2 and 3 show an example of a plate-like body (5) rotatably connected to and supported by the tongue piece (2) of the ring-like body (1), and the ring-like body (1). And a tongue portion (2).

The plate-like body (5) is, in this example, two plate materials (5a).
It consists of (5b) and is arranged in parallel with a gap. The tongue piece (2) is inserted into the gap (8), and the support hole (9) is formed.
At, the connection is supported.

The curved portion (3) may be formed to have a semicircular shape or an appropriate inner peripheral surface shape so as to come into contact with the outer circumference of the driving member. Further, the size of the ring-shaped body (1) can be appropriately set in consideration of the size of the outer diameter of the target driving member.

The plate material (5a) (5b) and the curved portion (3) of the plate-like body (5), and the ring-shaped body (1) and the tongue piece (2) may be integrally molded, or may be integrated by joining. It may be a converted version.

In this example, the plate-like body (5) is composed of two plate members (5a) and (5b), but this plate-like member (5) is composed of one plate member, and conversely, the ring is formed. The tongue piece (2) connected to the strip (1) may be composed of two plates.

For example, as shown in FIGS. 4 (a) and 4 (b), in the puller made of a metal such as an aluminum alloy of the present invention as exemplified above, the hollow portion (7) of the ring-shaped body (1) is The driving member (A) is loaded into the plate, and then the plate-like body (5) is pulled by the wire (B) at the hooking portion (4). Then, the inner surface of the curved portion (3) at the tip of the plate-like body (5) comes into contact with the outer peripheral surface of the driving member (A).

When the wire (B) is further pulled in this state, a force acts as shown by the arrow in the figure, and the driving member (A) is firmly held and pulled by the pulling tool of the present invention. It does not come off suddenly as in the case of conventional chucks. Further, if the pulling force of the wire is weakened after pulling out the driving member to a certain extent, it is possible to easily shift the pulling tool further downward and firmly hold it again at a predetermined position.

Even after it is completely pulled out, the driving member can be held and moved in the air by the pulling tool of the present invention.

(Effect of the Invention) As described in detail above, according to the present invention, it is possible to easily and efficiently pull out a driving member such as a pipe or a pile deeply driven into the ground. Since it does not suddenly come off when pulled out, it has excellent work safety.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.
2 and 3 are plan views showing respective constituent members of the extraction tool of the present invention. 4 (a) and 4 (b) are front views showing the operation of the pulling tool of the present invention. DESCRIPTION OF SYMBOLS 1 ... Ring-shaped body, 2 ... Tongue piece part 3 ... Curved part, 4 ... Hook part 5 ... Plate-shaped body, 6 ... Connection means 7 ... Hollow part, 8 ... Gap part 9 ... Support hole

Claims (1)

[Scope of utility model registration request] 1. A ring-shaped body having a tongue piece for loading a driving member into a hollow portion, and a plate-shaped body having a curved portion and a hooking portion abutting on the outer periphery of the driving member at both ends. And a plate-shaped body rotatably supported by a tongue portion of the ring-shaped body.