JPH0618793U - Cable insertion device into the pipe - Google Patents

Abstract

(57) [Summary] [Object] To provide a device for inserting a cable into a pipe, in which the direction of the cable tip can be smoothly changed to the axial direction of the pipe without trouble. In a cable insertion device for inserting an insertion guide cylinder 13 into the conduit 1 from a branch pipe 3 provided in the conduit 1 and inserting a cable 6 into the insertion guide cylinder 13 to insert the cable 6 into the conduit 1. , At the tip of the insertion guide tube 13,
A guide plate 16 is provided which swings between a posture in which a lower end thereof is slightly inclined forward with respect to an axis x of the insertion guide tube 13 and is projected downward, and a posture in which the lower end is projected forward. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cable insertion device into a pipe, and is particularly preferably used for inserting a cable having a relatively high rigidity into a pipe from a branch pipe provided in the pipe, such as a cable used in a pipe endoscopic method using a TV camera. It relates to a device for inserting a cable into a pipe.

[0002]

[Prior art]

 Conventionally, as a method of inspecting the state of a fluid such as water flowing in the pipe, a cable with a TV camera attached to the tip is inserted into the pipe from the branch pipe part for attaching the fire hydrant, An endoscopy method for inspecting the inside of the body is known.

A cable insertion device in the in-pipe endoscopy method, for example, clamps a cable by a feed roller and feeds the cable by rotationally driving the feed roller, and then feeds the cable from a branch pipe into the pipe in a direction perpendicular to the pipe. It is configured to pass through the inside of the insertion guide tube inserted into the tube and to be inserted into the tube from the tip of the insertion guide tube.

In this case, when inserting a cable having relatively high rigidity into the pipe, when the tip of the cable is extended from the end of the insertion guide tube in the direction perpendicular to the pipe into the pipe, the direction of the tip of the cable Since it was difficult to change the cable to the axial direction of the pipe, the tip of the cable hit the pipe wall and could not be inserted smoothly.

As a measure against this, there has already been proposed a device for inserting a cable into a pipe in which the direction of the tip of the cable can be smoothly changed in the axial direction of the pipe at the tip of the insertion guide cylinder.

As shown in FIG. 4, this cable insertion device has a posture in which a tip of an insertion guide cylinder 32 having an opening 31 is substantially along the axial direction of the insertion guide cylinder 32 and an inclined posture in which the insertion guide cylinder 32 protrudes obliquely forward. A guide plate 33 that can be swung between the guide plate 33 and the insertion guide tube 32 is manually rotated to swing the guide plate 33 to a position indicated by a virtual line. And guides the tip of the cable 35. The operation shaft 34 is rotated by a screw shaft 36 that is rotatably supported, a nut body 37 that is screwed into the screw shaft 36 to move up and down, a connecting shaft 38 attached to the nut body 37, and a moving bracket 39. It is transmitted to the guide plate 33 by the moving bracket 39 and the link 40 connected to the back surface of the guide plate 33, whereby the guide plate 33 is vibrated. Reference numeral 41 is a second guide plate whose lower end is in contact with the guide plate 33 and swings along with the guide plate 33 from the solid line position to the virtual line position.

[0007]

[Problems to be solved by the device]

 However, in the above-described conventional configuration, the operation position of the operation shaft 34 is at the uppermost part of the cable insertion device, and thus the operability is poor, and the guide plate 33 and the like are swung while the operation shaft 34 is rotated. It may take time to swing.

The present invention solves the above problem, and provides a cable insertion device into a pipe in which the direction of the cable tip can be smoothly changed to the axial direction of the pipe without trouble. It is intended.

[0009]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides an insertion guide in a cable insertion device that inserts an insertion guide tube into a tube from a branch pipe provided in the tube and inserts the cable into the insertion guide tube to insert the cable into the tube. At the tip of the tube, there is a guide plate that oscillates between a posture in which the lower end inclines slightly forward with respect to the axis of the insertion guide cylinder and projects downward and a posture in which the lower end projects forward. It is provided.

[0010]

[Operation] In the above configuration, when no external force is applied to the guide plate due to the urging force of the spring or the weight of the guide plate, the lower end of the guide plate is slightly diagonally forward with respect to the axis of the insertion guide tube. Hold it so that it tilts and projects downward. When the tip of the insertion guide tube is inserted into the pipe in this state, the lower end of the guide plate contacts the bottom of the pipe, and the guide plate receives the horizontal component of the reaction force from the bottom of the pipe and assumes an inclined posture that projects forward. . Therefore, when the cable is sent out into the insertion guide tube and the tip of this cable reaches the guide plate, its direction is changed along the guide plate in the inclined posture to the axial direction of the pipe, and the cable is smoothly inserted into the pipe. To be done. If the insertion guide tube is pulled out after pulling out the cable, the lower end of the guide plate separates from the bottom of the tube and does not receive the reaction force from the bottom of the tube. On the other hand, the lower end of the guide plate returns to a posture in which it inclines slightly diagonally forward and projects downward, and the guide plate is housed within the cross section of the insertion guide tube and can be taken out of the tube without any trouble.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. First, the intraluminal endoscopic method will be described with reference to FIG. Here, 1 is a conduit for tap water buried in the ground, and pits 2 for underground fire hydrants are formed above it at appropriate intervals. A branch pipe 3 is introduced from the pipe line 1 into the pit 2, and an unillustrated fire hydrant 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 is removed, and the cable insertion device 5 is connected to the auxiliary valve 4 as shown in the figure.

The cable insertion device 5 includes a cable drum 7 around which a cable 6 to be inserted into the conduit 1 is wound, and a split seal device that allows the cable 6 to pass while maintaining the inside of the conduit 1 sealed. 8, a pressure-resistant hose 9 for passing the cable 6, and a cable configured to feed the cable 6 into the pipe by rotating the roller while holding the cable 6 between the pair of rollers. A delivery device 10, an emergency shutoff valve 11 interposed between the lower end of the cable delivery device 10 and the auxiliary valve 4, an insertion outer cylinder 12, and an insertion guide cylinder 13 inserted into the insertion outer cylinder 12. It is configured to have and. A guide device 14 is provided at the lower end of the insertion guide tube 13, and is configured to bend the cable 6 in the right angle direction and send it out in the axial direction of the conduit 1. The cable 6 is provided with a plurality of large-diameter block-shaped bodies 6a, such as a TV camera, its illumination, and a control device, at appropriate intervals from its tip.

Next, the configuration of the guide device 14 provided at the lower end of the insertion guide cylinder 13 will be described with reference to FIG. An opening 15 is formed at the lower end of the insertion guide tube 13 by cutting out substantially half of its peripheral wall and opening wide to the side. An upper end portion of a guide plate 16 is swingably attached by a support shaft 17 to a portion of the insertion guide tube 13 facing the opening 15 on the lower rear surface side. A spring 18 for urging the guide plate 16 in the a direction is externally mounted on the support shaft 17, and a stopper 19 is provided below the support shaft 17, whereby the guide plate 16 receives an external force. When not inserted, as shown in FIG. 1, the lower end of the insertion guide cylinder 13 is held in a posture in which the lower end thereof is slightly inclined obliquely forward and protrudes downward. A roller 20 for sliding is rotatably attached to the lower end of the guide plate 16.

An upper portion of the second guide plate 21 is swingably attached to the guide plate 16 at a position near the opening 15 of the insertion guide tube 13 by a support shaft 22. A spring 23 for urging the second guide plate 21 in the b direction is also exteriorly mounted on the support shaft 22, and a stopper 24 is provided below the support shaft 22, whereby the second guide plate 21 is When no external force is applied, the insertion guide tube 13 is held in a posture substantially along the axis x. The guide plate 16 and the second guide plate 21 are each formed to have a size that fits within the cross section of the insertion guide cylinder 13.

In such a configuration, when performing an internal inspection of the inside of the conduit 1, the insertion outer cylinder 12 is connected to the auxiliary valve 4 from which the fire hydrant (not shown) is removed, and the cable is inserted as shown in FIG. The insertion device 5 is installed. Next, the sub valve 4 is opened, the insertion guide cylinder 13 in the insertion outer cylinder 12 is lowered, and the tip end thereof is inserted into the pipe line 1 through the sub valve 4 and the branch pipe 3. At this time, since the guide plate 16 and the second guide plate 21 are respectively housed within the cross section of the insertion guide cylinder 13, the insertion can be performed without any trouble.

When the insertion guide tube 13 is inserted up to near the bottom of the conduit 1, the roller 20 at the lower end of the guide plate 16 attached to the tip of the insertion guide tube 13 comes into contact with the bottom surface 1 a of the conduit 1 and As the horizontal component of the reaction force slides forward, the guide plate 16 swings in the c direction against the spring 18 and assumes a tilted posture with its lower end protruding forward, as shown in FIG. Along with this, the lower end of the second guide plate 21 also abuts the guide plate 16 and inclines forward (d direction), so that the second guide plate 21 and the guide plate 16 cause the second guide plate 21 to move horizontally from above to below. A bent guide surface is formed so that the inclination angles of and become gradually gentle.

In this state, the cable feeding device 10 feeds the cable 6 into the insertion guide barrel 13 via the insertion outer barrel 12. When the tip of the cable 6 reaches the position of the guide device 14, since the bent guide surface is formed as described above, the front end of the cable 6 smoothly changes its direction toward the axial center of the conduit 1 and 6 is reliably sent into the pipe line 1, and the inner surface of the pipe line 1 is inspected by a TV camera or the like provided on the block-shaped body 6a.

When the inspection is completed, the cable feeding device 10 is operated in the reverse direction to pull up the cable 6. Then, the insertion guide cylinder 13 is pulled out from the branch pipe 3 and the sub valve 4. At this time, the guide plate 16 swings in the a direction by the spring 18 as the insertion guide tube 13 is pulled out and separated from the bottom surface 1a of the conduit 1, and the second guide plate 21 also springs. 23 swings in the b direction. The guide plate 16 and the second guide plate 21 return to the posture shown in FIG. 1 and are taken out without any trouble when the roller 20 at the tip is separated from the bottom surface 1a of the conduit 1.

Finally, the sub-valve 4 is closed, the insertion outer cylinder 12 is taken out, and a fire hydrant is attached to complete the inspection work. In the above embodiment, the guide plates 16 and the second guide plates 21 are held in the postures shown in FIG. 1 by the springs 18, 23, etc. It may be configured to have this posture.

[0020]

[Effect of device]

 As described above, according to the present invention, at the tip of the insertion guide tube, the lower end of the insertion guide tube is tilted slightly obliquely forward with respect to the axial center of the insertion guide tube and the lower end is projected forward. The guide plate that can swing between the guide plate and the tilted posture is installed, and the guide plate is moved by using the contact / separation operation of the guide plate with the bottom surface of the conduit based on the insertion / removal operation of the insertion guide tube to / from the conduit. Since it is configured to swing, the work for swinging the guide plate, which has been performed conventionally, is unnecessary, and the work of inserting and removing the insertion guide tube can be easily performed without taking time. Moreover, since the structure is simple, the manufacturing cost is low.

[Brief description of drawings]

FIG. 1 is a front sectional view of a guide device for a cable insertion device into a pipe according to an embodiment of the present invention.

FIG. 2 is an overall schematic view of the cable insertion device.

FIG. 3 is a front sectional view for explaining the operation of the guide device.

FIG. 4 is a sectional view of a conventional cable insertion device.

[Explanation of symbols]

 1 Pipeline 5 Cable Inserting Device 6 Cable 13 Inserting Guide Tube 14 Guide Device 16 Guide Plate 18, 23 Spring 19, 24 Stopper 21 Second Guide Plate

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shizuo Inoue 2-26 Ohama-cho, Amagasaki-shi, Hyogo Stock Company Kubota Mukogawa Works (72) Inventor Yoshimi Sakurai 2-26 Ohama-cho, Amagasaki-shi, Hyogo Shares Kubota Mukogawa Factory (72) Inventor Hiroho Ohama 26-26 Ohama-cho Amagasaki City Hyogo Stock Company Kubota Mukogawa Factory

Claims (1)

[Scope of utility model registration request] 1. A cable insertion device for inserting an insertion guide cylinder into a pipe from a branch pipe provided in the pipe, and inserting a cable through the insertion guide cylinder to insert the cable into the pipe,
A guide that oscillates at the front end of the insertion guide cylinder between a posture in which the lower end is slightly inclined forward and protrudes downward with respect to the axis of the insertion guide cylinder, and a posture in which the lower end is protruded forward. A device for inserting a cable into a pipe, which is provided with a plate.