JPH0714883Y2 - A device for inserting inspection equipment into the conduit or collecting it. - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is used when inserting an inspection device from a part of a pipe such as a gas pipe or a water pipe or collecting the inspection device. It relates to the device.

[Prior Art] The conduit may be corroded over time, may be cracked due to ground subsidence, etc., or may have poor sealing performance at the connection portion.

Therefore, these inspections are necessary.

In the case of a buried pipe, in the past it was necessary to dig it once and expose the conduit to perform these inspections, but since such inspection methods have many problems such as cost and traffic obstacles, electronic technology has been recently used. The method of inserting various inspection devices applying the above from a part of the conduit and inspecting from the inner surface of the pipe has been adopted.

FIG. 5 shows a conventional insertion device for inspection equipment.

01 is a gas conduit, 02 is an inspection hole drilled in this gas conduit 01,
03 is a shutter device attached to the gas conduit 01, 04 is an insertion device main body attached on the shutter device 03, an insertion guide tube 05 is attached to the center of this main body 04, A guide portion 06 for guiding the device in the insertion direction is formed at the tip. 07 is a seal adapter, 08 is a gas outlet, and 09 is a cable.

[Problems of conventional technology]

The conventional insertion device described above is devised so that the excavation area of the working groove can be made small by raising the guide tube 05 as much as possible and downsizing the device. Therefore, the guide tube 05 becomes close to a right angle with respect to the gas conduit 01, and there is a problem that the insertion resistance of the cable 09 becomes large and it is difficult to insert the cable.

An object of the present invention is to propose an insertion device that can easily insert an inspection device into a conduit and collect the inspection device and that has a small insertion resistance.

[Means for Solving the Problems]

The present invention proposes the following device as means for solving the above problems.

A clamp device attached to an inspection hole provided in a conduit, a shutter device attached to the clamp device, and a device in which an attachment portion for the shutter device is formed at a lower end, and an insertion tube inclined upward is attached to a side wall. A main body, a guide cylinder which is located in the main body of the apparatus and which is curved in the insertion direction, and which is freely movable into and out of the conduit by the guide cylinder elevating shaft in the main body of the apparatus and through the inspection hole; A guide located in the upper part of the inlet side of the guide tube, which can be raised and lowered by the guide shaft into the device body and into the conduit through the inspection hole, and the extension of the insertion pipe with respect to the insertion pipe of the device body. Is installed via a flexible tube in the direction, and a packing with a cable seal hole is installed inside, and the packing is pressed by an external pressure ring to press the cable seal hole. A sealing device configured to be capable of reducing the diameter, and a drive device that sandwiches the cable with a roll on the inlet side of the sealing device and applies a forward or backward force to the cable by rotating the roll. A device for inserting inspection equipment into a conduit or collecting it.

In the above device, the flexible tube may be a transparent vinyl tube so that the insertion status can be grasped.
This point is the same for the main body of the apparatus, and if the side wall and the top wall of the main body or only the top wall are transparently configured, it is convenient because the guide tube and guide, the insertion state of the device, and the cable can be easily understood.

[Action]

In order to make the inspection hole as large as possible in the gas conduit,
A part of it is cut to provide a cutting port, which is used as an inspection hole. Clamping device (joint) with sufficient consideration for the cutting edge
, A shutter device is mounted on the clamp device, and a device body is mounted on the shutter device. The inspection device is connected to the cable in the main body of the device in advance, and when it is mounted on the shutter device, the inspection device is located inside the main device, the shutter device is closed, and both the guide cylinder and the guide are inside the main device. Has been raised to.

When the preparation is completed in this way, first, the shutter device is opened, the guide tube is lowered into the inspection hole, and the pushing force is applied to the cable by the driving device, so that the inspection device is slightly inserted into the gas conduit. Next, lower the guide and press the cable from above at the guide tube to help bend the cable.

After doing so, the cable is fully inserted and the cable is inserted to the desired position.

Collection is done by returning the cable, and when the inspection device reaches the guide tube, pull up the guide, the guide tube and the inspection device into the main body of the device, and close the shutter device to prevent gas from flowing into the main body of the device. . The above action is the insertion and recovery of the inspection device, and the sealing device blocks the gas leaking through the inside of the insertion pipe when the connection device is inserted and recovered. In this case, tighten the external pressure ring and apply pressure to the packing to reduce the diameter of the cable seal hole.

〔Example〕

FIG. 1 shows an embodiment of the present invention. Reference numeral 1 is a gas conduit,
Reference numeral 2 is an inspection hole provided by cutting the gas conduit 1, 3 is a clamp device that completely seals the gas conduit 1, and 4 is a shutter device attached to the clamp device 3, and the shutter 5 is pulled out. It is opened by doing so and closed by being pushed in.

Reference numeral 6 denotes an insertion device body having its lower end mounted on the shutter device 4, and an insertion tube 7 inclined upward is attached to a side wall 6'of the device body 6. Reference numeral 8 is a gas outlet, and 9 is a top wall of the main body 6.

10 is a guide tube formed in an arc shape.
A gas hole 10 ′ is provided in the gas pipe 1, and the gas in the gas conduit 1 flows downstream through the gas hole 10 ′. Reference numeral 11 is a guide tube raising / lowering shaft for inserting / removing the guide tube 10 into / from the main body 6 and the gas conduit 1 through the inspection hole 2, and is vertically movable with respect to the ceiling wall 9.

Reference numeral 12 is a guide that is movable up and down by a guide shaft 13 toward the inlet of the guide cylinder 10 and is attached so as to enter the main body 6 and the inspection hole 2 of the gas conduit 1.

14 is a vinyl transparent flexible tube extended from the insertion tube 7, 15 is a sealing device attached to the inlet side of the flexible tube 14, and this sealing device 15 is as shown in FIG.
It is possible to reduce the diameter of the cable seal hole 17 by incorporating a rubber packing 16 having a cable sealing hole 17 in the sealing device main body 15 'and pressing the packing 16 by screwing a pressing ring 18 into the main body 15. .

Reference numeral 19 is a gas outlet, and 20 is a support. Reference numeral 21 denotes a drive device attached to the inlet side of the sealing device 15, and the drive device 21 has a drive roll 22 for inserting and pushing back the cable and a handle for adjusting the clamping force of the drive roll 22. Made of 23. 24 is a receiving roll.

As shown in FIG. 2, the apparatus of the above-mentioned embodiment pulls up the guide cylinder 10 and the guide 12 into the main body 1, and the shutter device 4 is a clamp device attached to the inspection hole 2 of the gas conduit 1 with the shutter 5 closed. It is attached to 3. Gas conduit 1
Gas from the inside is blocked by the shutter device 4, and does not flow into the main body 1.

Next, the shutter 5 of the shutter device 4 is opened, and then the elevating shaft 11 is lowered to insert the guide cylinder 10 into the gas conduit 1 through the inspection hole 2. Next, the guide 12 is pressed against the upper side of the cable a by the guide shaft 13. When the drive roll 22 is driven by a drive motor (not shown) and the cable a sandwiched between the drive roll 22 and the receiving roll 24 is driven in this manner, the cable a is circled by the guide cylinder 10 and the guide 12. While being bent, it is smoothly inserted into the gas conduit 1. As a result, the inspection device can be inserted up to a predetermined position, and this state is shown in FIG.

Next, when pulling back the inspection device, the drive roll 22 is driven in the opposite direction to the direction described above, and when the inspection device returns to the position of the guide tube 10, the pulling of the cable a is stopped and the guide tube 10
Then, the guide 12 and the inspection device are pulled up into the main body 6, and then the shutter 5 is closed.

[Effect of the present invention]

As described above, according to the present invention, the guide tube and the guide are incorporated in the main body so that the cable can be smoothly bent and inserted or pulled back.
The cable will be inserted smoothly even if the insertion tube side is set up.

As a result, the size of the device can be reduced, and the work groove can be reduced accordingly, and the cost can be reduced.

Next, since the flexible tube is connected to the insertion tube, the insertion direction can be freely set at this flexible tube portion, and the workability is improved.

Next, since a seal device capable of reducing the diameter of the seal hole is attached to the inlet side of the flexible tube, the seal performance can be easily improved when the seal performance is reduced or the cable diameter is reduced.

Next, by providing a gas hole in the guide cylinder or circumventing the guide cylinder, the inspection work can be performed with the active tube.

[Brief description of drawings]

FIG. 1 is an overall view of an insertion device according to the present invention, FIG. 2 is a cross-sectional view of a main body portion with a shutter device closed, and FIG. 3 is a main body portion with a shutter opened and an inspection device is inserted. FIG. 4 is a side view in which a part of the sealing device is sectioned, and FIG. 5 is an explanatory view of a conventional insertion device. 1 ... Gas conduit, 4 ... Shutter device 6 ... Main body, 7 ... Insertion tube 10 ... Guide tube, 12 ... Guide 14 ... Flexible tube, 15 ... Sealing device 22 ... Drive roll

Claims (1)

[Scope of utility model registration request] 1. A clamp device which is attached to an inspection hole provided in a conduit, a shutter device which is attached to the clamp device, and a mounting portion which is attached to the shutter device at a lower end thereof, and an insertion pipe which is inclined upward on a side wall. And a guide tube that is positioned inside the apparatus body and that is curved in the insertion direction, and that can be moved in and out of the apparatus body and the conduit through the inspection hole by the guide tube lifting shaft. A guide that is located in the apparatus main body and above the inlet side of the guide cylinder, and is vertically movable into the conduit by the guide shaft in the apparatus main body and through the inspection hole; It is attached via a flexible tube in the extension direction of this insertion tube, and a packing with a cable seal hole is installed inside and the packing is pressed by an external pressure ring. A sealing device configured to be able to reduce the diameter of the seal hole, and a drive device that sandwiches the cable with a roll on the inlet side of the sealing device and applies a forward or backward force to the cable by rotating the roll. A device for inserting an inspection device into a conduit or collecting it.