JPH0140398Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clamp device for attaching a service cable to a branch pipe when the branch pipe is taken out from a gas or water pipe buried underground.

In the conventional clamp of this kind, as shown in Fig. 1, the molds 01 and 02, which are split into two parts at the top and bottom, are connected to the bolt 03.
It had a structure in which it was fixed to the pipe by tightening with a nut 04.

For this reason, when carrying out construction work to extract a branch pipe from a pipe buried underground, it is necessary to excavate a hole large enough for one worker to enter and install the clamp. However, this excavation work was expensive and caused problems such as creating a traffic obstruction on the road.

In order to solve this problem, the purpose of the present invention is to propose a clamping device that does not require digging a hole large enough for a worker to enter.

The structure of the present invention will be explained below.The clamp device has a main body which has a pressure contact surface with the piping on the inner surface and a hole for attaching a service cable on the central upper surface. two pairs of arms having a shaft portion that engages from the inside with bearings protruding from two locations in the front and back, and having a length that extends at least to the back side of the piping; A pushing member supported at the center by bolts screwed into screw holes provided between the formed bearings, and having a shape in which pushing parts at both ends can push down the upper surface of the arm body outside the shaft part of the arm body. Dig a hole large enough to accommodate this clamp device, lower this clamp device onto the pipe from the ground using a clamp installation tool, and tighten and fix the arm body to the pipe by turning the bolt. This is how it was done.

Figures 2 and 3 show an embodiment of the clamping device having the above-mentioned configuration, in which 1 has a pressure contact surface 2 with the piping on the inner surface, and a hole 3 for attaching a service cable on the central upper surface.
The clamp main body 4, 4' is the upper surface of the main body 1, and has a shaft part 6, which engages from the inside with bearings 5, 5' protruding from both ends in the longitudinal direction and at two places in the front and back. 6' and 2 pairs of 4 arms with a length that goes around at least to the back side of the pipe; 7;
7' is the upper surface of the main body 1, which is supported at the center by bolts 9 and 9' screwed into screw holes 8 and 8', respectively, provided between bearings 5 and 5' formed at both left and right ends; The pushing parts 10, 10' of the arms 7,
This is a pushing member that can push down the upper surface of the arm body 7' on the outside of the shaft parts 6, 6' of the arm body 7, 7'.

The clamp device according to the present invention has the above-mentioned configuration, and an example of its use will be explained next.

First, using an installation tool as shown in FIG. As shown in the figure, a tapered screw 13 is screwed into the screw hole 3 of the main body 1, a clamp device is suspended from the handle 12, and the clamp device is lowered into a hole excavated to a size that accommodates the clamp device, and placed on the pipe 16. At this time, the arms 4, 4' are opened wide by loosening the bolts 9, 9', so that they embrace the pipe 16. Next, use the wrench 21 to tighten the bolts 9 and 9'.
Tighten. When the bolts 9, 9' are tightened, the pushing parts 10, 10' of the pushing members 7, 7' push the arms 4,
4' and rotate the arms 4, 4' inward about the shafts 6, 6'. This action tightens the arms 4, 4' and fixes the main body 1 on the pipe 16 (FIG. 7).

Next, we will explain an example of how to attach the service tool to the clamp device fixed as above.
As shown in FIG. 5, the service chip 17 has a hexagonal part 19 formed under the screw 18 on the head, and as shown in FIG.
is screwed into the internal thread 18' of the service tee 17, the service tee 17 is suspended from the handle 12, lowered into the excavated hole, and the mounting screw 20 of the service tee 17 is aligned with the screw hole 3 on the clamp device side. Then, as shown in FIG. 9, align the hexagonal cap nut 15 on the handle 11 side with the hexagonal part 19 of the service tooth 17, and tighten the service tooth 17 by rotating it with the handle 11. When this tightening is completed, leave the handle 11 as it is and press the service tool 17 so that it does not rotate, turn the handle 12 to remove the tapered screw 13 from the screw hole 3, and pull up the handles 11 and 12.

As described above, the present invention provides a clamp device that
Since the arms 4, 4' that can be freely tightened with the bolts 9, 9' are attached to the main body 1, after placing the clamp device on the pipe 16, the bolts 9, 9' can be rotated using a tool from the ground. Accordingly, arm body 4,
4' can be tightened to the pipe 16 to securely fix the clamp device to the pipe 16.

Therefore, when installing the clamp device, there is no need to dig a hole large enough for a worker to fit in, as is the case with the conventional method, but it is sufficient to dig a hole small enough to lower the clamp device onto the pipe.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a conventional clamp, Fig. 2 is a perspective view of a clamping device according to the present invention, and Fig. 3 is a partially cutaway side view of a conventional clamp.
The figure is a side view, FIG. 4 is a front view of a tool for installing a clamp, FIG. 5 is a partially cutaway front view of a service tool, and FIGS. 6 to 9 are explanatory diagrams of an example of how to attach a clamp device and a service tool. . 1... Main body, 4, 4'... Arm body, 5, 5'... Bearing, 6, 6'... Shaft portion, 7, 7'... Pushing member,
9, 9'... Bolt, 11, 12... Handle,
17...Service team.

Claims (1)

[Claims for Utility Model Registration] A main body having a pressure contact surface with piping on the inner surface and a hole for attaching a service cable on the upper center surface; two pairs of arms, each having a shaft portion that engages from the inside of a bearing protruding from the outside, and having a length extending to at least the back side of the piping; a pushing member supported at the center by bolts screwed into screw holes provided between bearings, and having a shape such that pushing parts at both ends can push down the upper surface of the arm body outside the shaft part of the arm body; A clamping device consisting of.