JPH0533834Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for closing off a branch in a pipe such as a gas pipe, a water pipe, or a sewer pipe from the inside.

BACKGROUND ART When lining the various pipes as described above, a lining material is attached to the inner surface of the pipe to line the pipes. When lining a pipe in this way, if the pipe has a branch pipe, the lining material will block the branch, so it is necessary to drill holes in the branch later and connect the branch pipe to the main pipe. It is necessary to get through it.

However, when applying a lining material to the inner surface of the pipe, the adhesive flows into the branch pipe and solidifies there. As a result, a thick adhesive layer is formed at the branch, and it is extremely difficult to drill through the adhesive layer. Therefore, a stopper is fitted to the branch in advance to close it off, and a lining material is placed inside it. This is done by pasting and lining the interior.

As a device for this purpose, one described in Japanese Patent Laid-Open No. 16127/1983 is known. In this device, a mounting table on which a stopper for closing a branch part of the pipe is mounted is attached to a traveling body that moves in the pipe so that it can rotate in the axial direction of the pipe and move in the radial direction. It is what it is.

Problems that the invention aims to solve: However, with this device, only one stopper can be placed, and each time a branch is occluded, the device must be removed and the next stopper placed. .

In general, pipes with branch portions often have a large number of branch portions formed at relatively short intervals, and it is time-consuming and difficult to close them one by one.

The present invention was developed in view of the above circumstances, and prior to lining the pipe with a lining material, the branch part of the pipe is closed in advance to prevent the adhesive from flowing into the branch pipe. At the same time, to provide a device capable of storing a large number of plugs at one time and moving them in a pipe, and fitting the plugs one by one into branch pipes to successively close a plurality of branch parts. The purpose is to

Means for Solving the Problems The present invention provides a means for solving the problems by providing
A base is attached so that it can rotate in the axial direction and move in the radial direction of the conduit, a sliding member is attached to the base so as to be slidable in the radial direction of the conduit, and the sliding member is attached to the base so as to be able to rotate in the axial direction and move in the radial direction. A stopper storage member is provided at the tip of the sliding member, a push-up body is arranged at the bottom of the stopper storage member, and the push-up The device is characterized in that the body is fixedly supported on the base.

FIG. 4 shows a traveling body equipped with the device of the present invention. 1 is a conduit, and 2 is a branch pipe branched from the conduit 1. 3 is a running body which is inserted into the pipe 1 and can be moved into the pipe 1 by a sled 5 attached to the main body 4, and a rod 6 or wire connected to the rear part. It is designed to be moved by means such as

A rotating body 7 that is rotatable in the axial direction with respect to the main body 4 is provided at the front of the main body 4 of the traveling body 3, and a television camera 8 is attached to the rotating body 7.

Furthermore, a movable member 9 is attached to the front portion of the rotating body 7 and is movable relative to the rotating body 7 in the vertical direction in the figure, that is, in the radial direction of the conduit. Then, the movement of the traveling body 3, the rotation of the rotating body 7 with respect to the main body 4, and
The movement of the movable member 9 relative to the rotary body 7 can be remotely controlled from outside while viewing the image from the television camera 8.

A closure device 10 of the present invention is attached to the movable member 9.

This closure device 10 will be explained according to FIG. 1. Reference numeral 11 is a base, which is fixedly attached to the movable member 9. Further, 12 is a sliding member, which is composed of an upper plate 13 and a sliding rod 14,
The sliding rod 14 is supported by the base 11 so as to be able to freely slide up and down in the figure. This sliding member 12 is always urged upward with respect to the base 11 by a spring means 15.

Reference numeral 16 denotes a push-up body provided on the upper surface of the upper plate 13, and is fixedly supported with respect to the base 11 by a support 17 extending through the upper plate 13. As a result, the sliding member 12
is biased upwardly by spring means 15;
The upper surface of the upper plate 13 is held pressed against the push-up body 16.

Further, a stopper storage member 18 is formed on the upper part of the sliding member 12. In the drawing, the stopper storage member 18 is composed of several pillars 19 arranged around the push-up body 16, and is designed to store and hold several plugs 20 in a stacked manner between the pillars 19. It's summery. The push-up body 16 constitutes the bottom of the stopper storage member 18.

The pillar 19 has a slit 21 in its upper half.
is formed, and a wire spring 22 is attached to the slit 21.
are fitted, and a portion of the wire spring 22 protrudes inward to hold the stopper 20 housed between the columns 19.

As shown in FIG. 2, the stopper 20 has a notch 24 formed around a disk 23 having a diameter slightly larger than the inner diameter of the branch pipe 2 made of plastic, into which the support column 19 fits. Furthermore, a protrusion 25 that can fit into the inner surface of the branch pipe 2 is implanted on the upper surface of the disk 23. In the example of Fig. 2, the protrusion 2
5 is formed by combining three strip-shaped plates 26, and the end portion of each plate 26 is engaged with the inner surface of the branch pipe 2, so that it is held at the end of the branch pipe 2. ing.

Operation In the normal state of the closure device 10, the sliding member 12 moves upward with respect to the base 11, as shown in FIG. It is brought into contact with the bottom surface. Therefore, the support column 19 protrudes above the push-up body 16 to the maximum extent, and the volume of the stopper storage member 18 is large. Several plugs 20 can be stored within the plug storage member 18.

In addition, since the plug 20 is held by the wire spring 22, it is secured in the plug storage member 18, and even if the closure device 10 is oriented sideways or downwards depending on the mounting position of the branch pipe 2, the plug 20 is held in the plug storage member 18. It will not fall off from the member 18.

Several plugs 20 are placed in the plug housing member 18 of the closure device 10.
Insert the traveling body 3 into the conduit 1 with the
Move it within the conduit 1 by operating the rod 6 or the like. During this time, the inside of the conduit 1 is photographed with the television camera 8, and the branch pipe 2 is searched for.

The position of the traveling body 3 is adjusted while watching the image taken by the television camera 8, and the rotating body 7 is further rotated as necessary to position the closing device 10 inside the branch pipe 2.

Here, when the movable member 9 of the traveling body 3 is moved upward in the figure, the base 11 fixed to the movable member 9 moves upward, and the sliding member 12 also moves upward accordingly.

First, the tip of the support column 19 comes into contact with the tip end surface of the branch pipe 2. When the movable member 9 is further moved upward, the base 11 is moved upward, but the sliding member 12 cannot be moved upward because the tip of the support column 19 is held down by the branch pipe 2. Therefore, the base 11 moves upward with respect to the sliding member 12 while compressing the spring means 15, and the push-up body 16 supported by the base 11 moves upward away from the upper plate 13. And the push-up body 1
20 groups of plugs placed on the column 6 are pushed up along the support column 19.

The plug 20 moves upward while expanding the wire spring 22 attached to the support column 19, and the protruding piece 25 of the plug 20 at the uppermost end
fits into the inner surface of the tip of the branch pipe 2, and the end of the plate 26 is locked and held on the inner surface of the branch pipe 2. As a result, the disc 23 closes the opening of the branch pipe 2, and the stopper 20 is held in this state. This state is shown in FIG.

Next, when the movable member 9 is moved down, the sliding member 12
The base 11 remains in a state in which the tip of the support 19 is pressed against the end of the branch pipe 2 due to the elasticity of the spring means 15.
only moves downward, and the push-up body 16 also moves downward accordingly. When the push-up body 16 comes into contact with the upper surface of the upper plate 13, the sliding member 12 also moves downward, and the first
Return to the state shown in the figure.

At this time, among the group of 20 plugs previously stored in the plug storage member 18, the topmost plug 20 is attached to the branch pipe 2.
The remaining stopper 2 is left held in the end of the
0 is stored in the stopper storage member 18, and the sliding member 12
It moves downward.

Through the above steps, one branch is closed. Next, move the traveling body 3 in the same manner as described above, repeat the same operation at other branch parts,
A stopper 20 is fitted into each branch pipe 2 one by one to close the pipe. Therefore, once the traveling body 3 is inserted into the pipe line 1, the plug 2 stored in the plug storage member 18 can be removed.
Branches corresponding to a number of 0 can be occluded.

Once all the branch pipes 2 of the conduit 1 are closed, the inner surface of the conduit 1 is lined with a lining material by a known appropriate method. And the closing device 1 is attached to the traveling body 3.
0, by attaching an appropriate perforation device to the lined conduit 1, and drilling the lining material together with the stopper 20 from the inside, the branch pipe 2 is inserted into the lined conduit 1.
Let's pass it through. Perforation devices for branching parts of pipes include drill-like devices, devices that punch holes by impact,
Various structures have been proposed, such as those that can be burned off with a hot trowel, so it is only necessary to select and use the appropriate one.

Effects of the invention According to the invention, when lining the pipe line 1 with a lining material, the branch part of the pipe line 1 is closed with the stopper 20, so that the adhesive for bonding the lining material branches. There is no flow into the pipe 2, and the branch pipe 2
There is no formation of a thick adhesive layer inside which would impede drilling. Therefore, when drilling the branch portion in a later step, it is sufficient to drill only the thin lining material and the plug 20, so the drilling can be easily done in a short time.

Furthermore, if the plug storage member 18 is made to be able to store several plugs 20, once the traveling body 3 is inserted into the pipe line 1, the plugs 20 can be fitted into several branch pipes 2 in succession. This allows for high work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a central vertical sectional view of the closure device of the present invention, and FIG. 2 is a perspective view of a stopper for closing a branch pipe with the closure device of the present invention. FIG. 3 is a central vertical sectional view showing the operating state of the closure device of the present invention. FIG. 4 is a side view of a traveling body equipped with the closure device of the present invention. 1... Pipe line, 2... Branch pipe, 3... Traveling body, 9
...Movable member, 10...Closing device, 11...Base, 12...Sliding member, 16...Pushing body, 18
...Plug storage member, 20...Plug.

Claims (1)

[Scope of utility model registration request] 1. A blocking device for a branched portion of a pipeline, comprising: a base (11) attached to a running body (3) that moves within the pipeline (1) so as to be rotatable in the axial direction of the pipeline and movable in the radial direction; a sliding member (12) attached to the base (11) so as to be slidable in the radial direction of the pipeline (1); and the sliding member (12) is biased in a direction protruding toward the inner surface of the pipeline (1) relative to the base (11); a plug storage member (18) is provided at a tip of the sliding member (12); a push-up body (16) is disposed at a bottom of the plug storage member (18); and the push-up body (16) is fixedly supported on the base (11).