JPH094760A - Jig for pipe connection - Google Patents

Abstract

PURPOSE: To provide a jig for a pipe connection to exert a traction force for pipe connection stably in the direction of a pipe axis and be accurately and high-efficiently arranged in the pipe. CONSTITUTION: The end part 32 of a pipe 3 and a lock plate 2 locked at a stepped part between the inner surface of the socket 61 of a pipe 6 connected thereto and a pipe 6 body are arranged at the respective outer edge parts of the end parts in three spots of a T-shaped coupling member. Shackles 5 being a lock member to which a wire rope is locked are arranged on the back side of a coupling member 1 at which the lock plate 2 is arranged, and a position relation between the shackles 5 in three spots is approximately an equilateral triangle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connecting jig used for joining pipes when laying glass fiber reinforced resin pipes and the like.

[0002]

2. Description of the Related Art In a pipe such as a glass fiber reinforced resin pipe used as a sewer pipe or the like, a receiving opening having a diameter larger than that of the pipe main body is usually formed at one end of the pipe main body having a constant inner and outer diameters. The other end of the tube body is an insertion port that is inserted into the receiving port. Such a pipe is formed by an excavation method in which a groove is formed along a pipeline to be laid, or
It will be laid in the existing pipe buried in the ground or by the non-cutting method of inserting directly into the ground. For glass fiber reinforced resin pipes with a relatively large diameter, in any method, after inserting the insertion port of the subsequent pipe into the receiving port of the preceding pipe, a pipe connection jig to firmly join the pipes together. May be used.

A conventional pipe connecting jig is as shown in FIG.
Locking plates 92 are provided at both ends of the linear connecting rod 91,
An eye bolt 93 for locking the wire rope is attached to the back side of the connecting rod 91 provided with the locking plate 92. If the distance between the locking plates 92 at both ends is longer than the inner diameter of the pipe, the pipe connecting jig cannot be arranged inside the pipe. Therefore, the distance between the locking plates 92 should be smaller than the inner diameter of the pipe. There is.

Therefore, since the pipe connecting jig is arranged at a position shifted downward from the diameter position of the pipe and pulled by the wire rope, an upward force acts on the connecting portion of each pipe, and The tube is inserted with it facing upwards. There is a problem that the work efficiency is poor because the connection work must be performed while repeating the work of correcting such a state by the crane.

In order to solve the above problems, Japanese Patent Application No.
-267094 provides an expandable and retractable connecting member and a locking plate attached to each end of the connecting member, each outer edge of which is locked in place at the end of the pipe. There has been proposed a pipe connecting jig capable of exerting a traction force at the position of the pipe axis by arranging the jig at the diameter position.

[0006]

According to the above-mentioned publication, the traction force acts at the position of the pipe axis when the pipes are accurately arranged in the diameter direction of the pipe. However, in a large diameter buried pipe or the like, it is troublesome to place the pipe at an accurate diameter position, and work efficiency is not improved. In addition, there remains a problem that the acting direction of the traction force is deviated from the tube axis direction and is likely to become unstable.

The present invention solves the above-mentioned problems of the prior art, allows the traction force for connecting pipes to act stably in the pipe axial direction, and allows pipes to be arranged accurately and efficiently within the pipe. The object is to provide a jig for use.

[0008]

The jig for pipe connection according to the present invention comprises:
When connecting a pair of pipes, a pipe connecting jig that connects the pipes by being locked at the end portions of the respective pipes and pulled by each other. At each end of the location, a locking plate is provided whose outer edge is locked at the end of the pipe or at the step between the inner surface of the receiving port of the pipe connected to this and the inner surface of the pipe body. An engaging member for engaging the wire rope is provided on the back side of the connecting member provided with, and the mutual positional relationship among the above-mentioned three engaging members is a substantially equilateral triangle. It is a thing.

[0009]

In the pipe connecting jig of the present invention, the respective outer edges of the locking plates provided at the three ends of the T-shaped connecting member are locked to the ends of the pipe. The pipe connecting jig is pulled at three points by a wire rope locked by three locking members. Since the locking members on the back side of the connecting member provided with the locking plates are in a regular triangular positional relationship with each other, the acting direction of the traction force is almost always aligned with the axis of the pipes to be connected. Therefore, the action direction of the traction force is stable, and the pipe connecting jig can be efficiently arranged in the pipe.

[0010]

Embodiments of the pipe connecting jig of the present invention will be described below with reference to the drawings. 1 is a front view showing an embodiment of a pipe connecting jig of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. In FIG. 1 and FIG. 2, a connecting member 1 is a lateral arm 12 formed of a laterally opening channel, and the lateral arm 1
A vertical arm 11 having a channel that opens in the same direction as the channel of the horizontal arm 12 is provided almost at the center in the vertical direction, and forms an inverted T-shape. On both end side surfaces of the horizontal arm 12 and the end side surfaces of the vertical arm,
Each locking plate 2 is fixed, and the outer edge 2 of the locking plate 2 is fixed.
1 is adapted to be locked to the end of the pipe 3.

Shackles 5, which are locking members for locking the wire rope, are provided on the back sides of the horizontal arm 12 and the vertical arm 11 provided with the three locking plates 2, respectively.
The positional relationship between these three shackles 5 is approximately a regular triangle. As shown in FIG. 1, a bolt 4 vertically penetrating a channel of the lateral arm 12 is inserted into a shackle 5 inside the channel, and an end of the bolt 4 outside the channel is fixed by a nut 41. The shackle 5 provided on the side surface of the end portion of the vertical arm 11 is similarly fixed.

FIG. 3 is a sectional view showing a state in which the end portion 62 of the pipe 6 is connected to the receiving opening 31 of the pipe 3 using the pipe connecting jig, and FIG. 4 is taken along line BB of FIG. FIG. 3 and 4, the horizontal arm 12 is placed in the horizontal direction at the step portion between the receiving opening 61 of the pipe 6 and the main body of the pipe 6, and the locking plate of the pipe connecting jig is applied to lock the pipe connecting jig. . On the other hand, the other end 32 of the pipe 3 is provided with a lateral arm 1 of another pipe connecting jig.
2 is set in the horizontal direction, and its locking plate is applied to lock the pipe connecting jig. The wire rope 7 is attached to the shackle 5 at the corresponding position of the two pipe connecting jigs via the lever block 8.
And wire the three wire ropes 7 in this way. When the wire rope 7 is pulled by turning the three lever blocks 8 to the same extent, the pipes 3 and 6 are pulled together without the axial center directions of the pipes 3 and 6 shifting, and the pipes 3 and 6 are joined.

[0013]

The pipe connecting jig of the present invention is constructed as described above, and since the connecting members and the locking members for locking the wire rope for pulling the pipes are in a regular triangular positional relationship with each other,
The traction force for connecting the pipe can be stably applied in the pipe axial direction, and the pipe can be arranged accurately and efficiently in the pipe.

[0014]

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a pipe connecting jig of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view showing a usage state of the pipe connecting jig of the present invention.

FIG. 4 is a sectional view taken along line BB in FIG. 3;

FIG. 5 is a front view showing a usage state of a conventional pipe connecting jig.

[Explanation of symbols]

 1: Connection member 2: Locking plate 3, 6: Pipe 4: Bolt 5: Shackle 7: Wire rope 8: Lever block 11: Vertical arm 12: Horizontal arm 41: Nut 31, 61: Receptacle 32, 62: End

Claims (1)

[Claims] 1. A pipe connecting jig for connecting a pair of pipes to each other by engaging the ends of the pipes with each other and pulling the pipes to each other. Locking plates are provided at each of the three ends of the connecting member so that the outer edges of the connecting members are locked at the end of the pipe or the step between the inner surface of the receiving port of the pipe connected to this and the inner surface of the pipe main body. A locking member for locking the wire rope is provided on the back side of the connecting member provided with the locking plate, and the mutual positional relationship of the above-mentioned three locking members is approximately an equilateral triangle. A jig for connecting pipes.