JPH0753365Y2 - Cable insertion device into the pipe - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to a device for inserting a cable into a pipe, and particularly to a branch provided with a relatively rigid cable such as a cable in a pipe endoscopy method using a TV camera. The present invention relates to a device for inserting a cable into a pipe, which is preferably used when the pipe is inserted into the pipe.

2. Description of the Related Art Conventionally, as a method of inspecting the state of a fluid such as water still flowing in a pipe, a sub valve and an insertion outer cylinder are connected to a branch pipe for mounting a fire hydrant or an air valve, and this insertion outer cylinder is connected. There is known a pipe endoscopy method in which a cable having a TV camera attached to the tip is inserted into the pipe via a sub valve and a branch pipe, and the inside of the pipe is inspected by the TV camera.

The cable insertion device in this in-pipe endoscopy method, for example, clamps the cable by a feed roller connected to one end side of the insertion outer cylinder and feeds the cable by rotationally driving the feed roller. It is configured to be inserted into the tube while being inserted into the insertion guide tube inserted in the direction perpendicular to the tube, and guided from the tip of the insertion guide tube by the guide inclined plate attached to the tip of the insertion guide tube. ing.

However, in the above-mentioned conventional configuration, in order to change the insertion direction of the cable, the insertion outer cylinder or the like must be removed from the auxiliary valve, and the cable insertion direction must be changed again to attach the insertion outer cylinder or the like. However, there is a problem that it takes a lot of time and effort.

The present invention solves the above problem, and an object of the present invention is to provide a cable insertion device that can change the insertion direction of a cable without much labor and time.

Means for Solving the Problems In order to solve the above problems, the present invention connects a sub-valve and an insertion outer cylinder to a branch pipe provided in the pipe, and the sub-valve and the branch pipe are connected from the insertion outer cylinder. In a cable insertion device for inserting an insertion guide tube into a pipe and inserting a cable through the insertion guide tube to insert the cable into the pipe, the outer cylinder for insertion is connected to a joint flange member for coupling to a sub valve and the joint flange member. In addition, a cable feeding device for holding and feeding the cable is divided into a connecting pipe to which the cable is connected, and these joint flange members and the connecting pipe are rotatably connected via a lock ring.

Action With the above configuration, when changing the insertion direction of the cable, it suffices to rotate the connecting pipe with respect to the joining flange member coupled to the auxiliary valve, and it does not take time and effort. Also,
The lock ring prevents the connecting pipe from coming off from the joint flange member.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, the in-pipe endoscopy method will be described with reference to FIG. Here, 1 is a conduit for tap water, etc. buried underground, and pits 2 for underground fire hydrants are formed above it at appropriate intervals. A branch pipe 3 is guided from the pipe line 1 into the pit 2, and a fire hydrant (not shown) is attached to the upper end of the branch pipe 3 via a sub valve 4.
When performing the in-pipe endoscopy method, the auxiliary valve 4 is closed, the fire hydrant (not shown) is removed, and the cable insertion device 5 is connected to the auxiliary valve 4 as shown in the drawing.

The cable insertion device 5 includes a cable drum 7 around which a relatively rigid cable 6 to be inserted into the conduit 1 is wound,
A sealing device 8 for dividing the cable 6 in a state where the inside of the pipe 1 is kept sealed, a pressure-resistant hose 9 for passing the cable 6, and a roller which rotates the cable 6 while being sandwiched by a pair of rollers. A cable feeding device 10 configured to feed the cable 6 toward the inside of the pipe by driving, an emergency shutoff valve 11 interposed between the lower end of the cable feeding device 10 and the sub valve 4, and for insertion. The outer cylinder 12 and an insertion guide cylinder 13 that is inserted into the insertion outer cylinder 12 are provided. Insertion guide tube 13
The lower end of the guide plate 14 is open, and the guide plate 14 is swingably attached to the insertion guide tube 13.
Can be tilted with respect to the insertion guide cylinder 13 by being manually operated by an operating shaft 15 arranged to penetrate the insertion guide cylinder 13. A plurality of large-diameter block-shaped bodies 6a, such as a TV camera, its illumination, and a control device, are attached to the cable 6 at appropriate intervals from its tip.

The insertion outer cylinder 12 into which the insertion guide cylinder 13 is inserted has a joint flange member 16 connected to the auxiliary valve 4 as shown in FIG.
And a connecting pipe 17 connected to the joint flange member 16.

The joints between the joint flange member 16 and the connecting pipe 17 are configured to be rotatable by forming the receiving port 16a and the insertion port 17a, respectively, and are locked to the inner peripheral surface of the receiving port 16a and the outer peripheral surface of the insertion port 17a. The ring groove portions 16b and 17b are formed, and the lock ring 18 having the enlargement hole portion 18a is fitted into these lock ring groove portions 16b and 17b as shown in FIGS. 4 (a) and (b). ing. As shown in FIG. 3, the joint flange member 16 is provided with an operation window 19 that faces the storage location of the lock ring 18. Further, a plurality of groove portions 16c for sealing material are formed on the inner peripheral surface of the receiving port 16a of the joint flange member 16, and the O-ring 20 is fitted therein.

The insertion outer cylinder 12 is assembled as follows. First, the O-ring 20 and the lock ring 1 are provided in the lock ring groove 16b and the seal material groove 16c of the joint flange member 16.
Insert 8. At this time, the lock ring 18 is attached so that the hole 18a for enlargement thereof faces the operation window 19, and the operation window 1
The lock ring 18 is enlarged by inserting the tip of a jig (not shown) from 9 into the enlargement hole 18a. Then, the insertion port 17a of the connecting pipe 17 is inserted into the receiving port 16a of the joining flange member 16, the jig is removed, the lock ring 18 is returned to the original state, and the lock ring groove portion 17b of the connecting pipe 17 is also fitted. . As a result, the joint flange member 16 and the connecting pipe 17 are rotatable with respect to each other in a state where separation is prevented and the sealing property is maintained.

In the above configuration, when performing an internal inspection of the inside of the conduit 1, the fire hydrant is removed from the sub valve 4, and the cable insertion device 5 is installed in the sub valve 4. At this time, the insertion guide tube 13 and the guide plate 14 are arranged in advance so that the guide plate 14 faces the flow direction of the conduit 1 when the guide plate 14 is lowered. Next, the sub valve 4 is opened, the insertion guide cylinder 13 in the insertion outer cylinder 12 is lowered by the operation shaft 15, and the tip portion thereof is inserted into the pipe passage 1 through the sub valve 4 and the branch pipe 3. . After that, the operation shaft 15 is rotated and only the tilting operation of the guide plate 14 is performed. In this state, the cable feeding device 10 feeds the cable 6 into the insertion guide tube 13 via the insertion outer tube 12. Cable 6
When the tip of the cable reaches the tip of the insertion guide tube 13, the cable 6
Is guided by the guide plate 14 to turn in the axial direction of the pipeline 1 and is sent into the pipeline 1 to inspect the inner surface on one side of the pipeline 1 with a TV camera or the like provided on the block-shaped body 6a. Is done.

Then, the direction of the cable 6 is changed and the inner surface of the other side of the conduit 1 is inspected. In this case, the cable feeding device 10 is operated in the reverse direction to insert the cable 6 into the guide tube 13
Store it inside once. After that, by rotating the connecting pipe 17 by 180 degrees with respect to the joint flange member 16, the cable 6 having a relatively high rigidity held by the cable feeding device 10 is rotated, and accordingly, the guide that comes into contact with the cable 6 Change the orientation of the plate 14, etc. Then, the cable feeding device 10 is again operated in the forward direction to move the cable 6
Sent to the other side of pipeline 1, and use a TV camera to
The inner surface of the other side is inspected. In this way, when changing the insertion direction of the cable 6, it suffices to rotate the connecting pipe 17 with respect to the joint flange member 16 connected to the auxiliary valve 4.

Effect of the Invention As described above, according to the present invention, the insertion outer cylinder is connected to the joining flange member that is joined to the auxiliary valve, and the cable feeding device that connects the joining flange member and holds and feeds the cable. Since it is divided into a connecting pipe and these joint flange members and the connecting pipe are rotatably connected via a lock ring, when changing the insertion direction of the cable, It is only necessary to rotate the connecting tube, and the work of changing the cable insertion direction can be done efficiently without taking time and effort.

[Brief description of drawings]

The drawing shows one embodiment of the present invention, FIG. 1 is a cross-sectional view of an outer cylinder for insertion, FIG. 2 is a view showing an implementation state of a pipe endoscope method, FIG. 3 is a front view of a joint flange member, and FIG. 4 (a) and 4 (b) are a plan view and a front view of the lock ring. 1 ... Pipe line, 3 ... Branch pipe, 4 ... Sub valve, 5 ... Cable insertion device, 6 ... Cable, 12 ... Outer cylinder for insertion, 13 ...
… Insert guide tube, 16 …… Joining flange member, 17 …… Connection pipe, 18 …… Lock ring, 20 …… O-ring.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshimi Sakurai 2-26 Ohama-cho, Amagasaki-shi, Hyogo Stock company Kubota Mukogawa Factory (72) Hirobo Ohama 2-26 Ohama-cho, Amagasaki-shi, Hyogo Stock company Kubota Mukogawa Works

Claims (1)

[Scope of utility model registration request] 1. A sub-valve and an insertion outer cylinder are connected to a branch pipe provided in the pipe, and an insertion guide cylinder is inserted into the pipe from the insertion outer cylinder through the sub-valve and the branch pipe, and the insertion guide is inserted. In a cable insertion device for inserting a cable through a tube to insert the cable into a pipe, a connecting flange member for connecting the insertion outer cylinder to the auxiliary valve and a cable sending device for connecting and sending the cable while holding the cable are combined. And a connecting pipe connected to the connecting pipe, and the connecting flange member and the connecting pipe are rotatably connected to each other via a lock ring.