JPH08340613A - Carrying device of cable - Google Patents

Abstract

PURPOSE: To provide a device for carrying a long object such a cable to a such narrow position as in a pipeline or a rubble. CONSTITUTION: Inner balloons 5 and 7 and outer balloons 6 and 8 are provided inside and outside a first annular substrate 3 and a second annular substrate 4, at the same time the first annular substrate 3 and the second annular substrate 4 are connected by a stretchable connecting body 9, and a pressurized fluid can be supplied to or discharged from the inner balloons 5 and 7 and outer balloons 6 and 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device for cables and the like,
More specifically, the present invention relates to a conveying device such as a cable suitable for conveying and carrying a long object such as a cable into a relatively narrow passage such as a pipeline or rubble.

[0002]

2. Description of the Related Art Generally, for maintenance and inspection in a narrow pipeline or search in a rubble where a building has collapsed, a cable (optical fiber, etc.) having a searcher such as a surveillance camera at the tip is installed in this narrow pipeline. Inserting is done. In this case, when the narrow path is complicatedly bent or extends in the vertical direction, the cable insertion work may be troublesome or impossible.

In particular, as an inspection device for maintaining and inspecting the inside of a pipeline, two balloons are attached to the tip of a long object such as a cable with a space therebetween, and a rubber actuator is arranged between the balloons. A traveling type inspection device has been proposed (for example, Japanese Patent Laid-Open No. 1-216238). This device is configured such that a pressure fluid is supplied to one of the balloons to inflate the balloon so as to be fixed inside the tube, and the other balloon is advanced by utilizing the expansion and contraction action of the rubber actuator.

[0004]

By the way, in the above-mentioned cable conveying device, since two balloons and an actuator are both attached to the cable, the pipe having an extremely complicated arm curve or in the middle There is a problem that the traveling body composed of the two balloons and the actuator cannot move forward in a narrow path such as rubble where the outer peripheral wall disappears, and as a result, the cable cannot be conveyed.

[0005]

The present invention has been achieved to solve the problems of the above-mentioned conventional apparatus,
An inner balloon and an outer balloon are provided inside and outside the first annular base body and the second annular base body, respectively, and the first annular base body and the second annular base body are connected by a stretchable connecting body. The present invention also provides a conveying device such as a cable configured to supply or discharge a pressure fluid to each of the inner balloon and the outer balloon.

Preferably, the connecting body connecting the first annular base body and the second annular base body is composed of a rubber actuator, a tension spring and a spring holding body for holding the spring, and a pressure fluid is also provided in the rubber actuator. Is configured to be able to be supplied or discharged.

[0007]

[Operation] In a cable conveying device having such a configuration, first, a pressure fluid such as air is supplied to an inner balloon of either the first annular base body or the second annular base body to inflate the balloon or the like. Hold the tip of the. And the first
Inserting a cable or the like into a narrow path by alternately performing supply and discharge of a pressure fluid such as air to and from the outer balloon provided on the outer side of the second annular base body and the expansion and contraction action of the connecting body. You can

In a place where it is difficult for the first annular base body and the second annular base body to move by themselves, for example, in a narrow narrow passage such as a pipe having extremely complicated arm bending or a rubble where the outer wall disappears in the middle. A pressure fluid is supplied to the outer balloon of either the first annular base body or the second annular base body to inflate it and fix it. Then, only the cable can be advanced and inserted by alternately supplying and discharging the pressure fluid of the inner balloons of the first annular base and the second annular base and expanding and contracting the connecting body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a conveying device for cables and the like according to the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a cable that is inserted into the conduit 2 while being pulled, and a surveillance camera and various search devices (not shown) are attached to the tip of the cable. Conveying device M for cables and the like according to the present invention
Is composed of a drive portion K of the front mechanism and a source portion G of the rear mechanism.

The driving portion K is a portion that gives a power for moving the conveying device M forward or backward, and is composed of a first annular base member 3 located at the front and a second annular base member 4 located at the rear. The first annular base body 3 has an annular support 3a as an intermediate member, and an inner balloon 5 such as a rubber tire is concentrically provided on the inner side and an outer balloon 6 such as a rubber tire is concentrically provided on the outer side. . Further, the second annular base body 4 has an annular support 4a as an intermediate member, and an inner balloon 7 is concentrically provided inside thereof and an outer balloon 8 is concentrically provided outside thereof.

Therefore, when compressed air is supplied to the inner barrules 5 and 7 provided inside the non-deformable supports 3a and 4a, they expand to the inner diameter side. Further, when compressed air is supplied to the outer balloons 6 and 8 provided outside the supports 3a and 4a, the balloons are expanded to the outer diameter side, and the compressed fluid, especially compressed air is taken in and out of these balloons to expand. It will contract.

The first annular base 3 and the second annular base 4 are connected by a stretchable connecting body 9.
The connecting body 9 is composed of a bellows type rubber actuator 10, a tension spring 11, and a spring holding body 12 that holds the inner diameter side of the tension spring 11, and the tension spring 11 is provided on the side surface of the first annular base body 3 and It is arranged between the side surfaces of the two annular base bodies 4 and acts so as to reduce the space between the first annular base body 3 and the second annular base body 4 separated by the rubber actuator 10.

The spring holder 12 is composed of both annular substrates 3, 4
The support plates 3a and 4a, which are the intermediate members, are extensiblely connected to each other and supplied with a pressure fluid such as compressed air to expand the length. Then, when the pressure fluid is discharged, the space between the annular base bodies 3 and 4 is contracted by the action of the tension spring 11. The spring holder 12 is configured so as to be capable of expanding and contracting in the axial direction when a working fluid such as compressed air is supplied to the inside, and is made of a rubber tube, a cloth-like object or the like.

Reference numerals 13a to 13e are pipes for working fluid such as compressed air, and one end thereof is connected to the distribution ring 14. The pipe 13a is attached to the inner balloon 5 on the side of the annular substrate 3, the pipe 13b is attached to the outer balloon 6, and the pipe 13 is attached.
c is connected to the inner balloon 7 on the side of the annular substrate 4, and the pipe 13d is connected to the outer balloon 8. Further piping 13
The e is connected to the rubber actuator 10 so that the rubber actuator expands when supplied to the working fluid.

The distribution ring 14 and the motor 15 can be driven by gear mechanisms 14a and 15a. The motor 16 operates the compressor to fill the pressure tank 17 with compressed air as a pressure fluid. Motor 15
With the rotation of the distribution ring 14 whose rotation is controlled by, the balloons 5, 6, 7, 8 and the rubber actuator 10 of the annular substrates 3, 4 are supplied and discharged in the following order.

Next, the case where the cable 1 is carried and inserted into the conduit 2 by using the carrying device M such as a cable according to the present invention will be described. First, a case where the cable 1 is gripped and self-propelled will be described. Inner balloons 5, 7 and outer balloons 6, 8 of the first annular substrate 3 and the second annular substrate 4
Also, the compressed air, which is a pressure fluid, is not supplied to the rubber actuator 10 and fitted into the tip of the cable 1 and set in the conduit 2 (FIG. 2).

Next, compressed air is supplied to the outer balloon 8 of the second annular substrate 4 to inflate it and fix it inside the conduit 2 (FIG. 3). Then, compressed air is supplied to the inner balloon 5 of the first annular substrate 3 to reduce the inner diameter thereof to grip the cable 1 (FIG. 4). In the above state, compressed air is supplied to the actuator 10 to extend it in the axial direction thereof, and the first annular substrate 3 is advanced to move the cable 1 by the amount of extension.
Is drawn into the conduit 2 (Fig. 5).

Next, compressed air is supplied to the outer balloon 6 of the first annular substrate 3 to fix the annular substrate 3 in the conduit 2 (FIG. 6). And the outer balloon 8 of the second annular substrate 4
To release the second annular substrate 4 to the cable 1 (FIG. 7). Next, the pressure of the rubber actuator 10 is released, and the second annular substrate 4 is advanced by the elastic force of the tension spring 11 (FIG. 8).

The outer balloon 8 of the second annular substrate 4
Compressed air is supplied to the tube to expand it and fix it to the inner surface of the conduit 2 (FIG. 9). Next, the compressed air in the outer balloon 6 of the first annular substrate 3 is evacuated and released from the conduit 2 (FIG. 10). Note that this state is the initial state of conveyance shown in FIG. Then, compressed air is supplied to the rubber actuator 10 to expand the compressed air and draw the cable 1 into the conduit 2 by the expanded amount (FIG. 11). Note that this state is the same as that in FIG.

Hereinafter, while repeating the above-described operation, the cable 1 is pulled by the carrier device M according to the present invention while being self-propelled and retracted in the pipe line 2. Next, a case where the transport device is fixed in the pipe (narrow portion) and the cable is fed will be described. First, the first annular substrate 3 and the second
The inner balloons 5, 7 and the outer balloons 6 of the annular substrate 4 of
8 and the rubber actuator 10 are fitted into the tip of the cable 1 in a state where compressed air as a pressure fluid is not supplied and set in the conduit 2 (narrow portion) (FIG. 12).

Next, the outer balloon 6 of the first annular substrate 3
Compressed air is supplied to and expanded to fix the first annular substrate 3 in the conduit 2 (FIG. 13). And the first annular substrate 3
Compressed air is supplied to the inner balloon 5 to be inflated and fixed in the conduit 2 (FIG. 14). Next, rubber actuator 1
0 is supplied with compressed air to extend the rubber actuator 10 rearward (FIG. 15).

Then, the inner balloon 7 of the second annular substrate 4 which has moved rearward is inflated to hold the cable 1 (FIG. 16). Next, the pressure of the inner balloon 5 of the first annular substrate 3 is released to release the holding of the cable 1 (FIG. 17). Then, the pressure of the rubber actuator 10 is released, and the tension spring 11
The cable 1 and the second annular base portion 4 are pulled toward the front side by contracting by utilizing the elastic force of (FIG. 18).

Next, compressed air is supplied to the inner balloon 5 of the first annular base portion 3 to inflate it to hold the cable 1 (FIG. 19). And the inner balloon 7 of the second annular base 4
The pressure is released to cause the contraction, and the initial state shown in FIG. Then, as shown in FIG. 21, compressed air is supplied to the rubber actuator 10 to move the second annular base portion 4 rearward (the state shown in FIG. 15). By repeating the above-described operations in order, only the cable 1 can be moved forward to a predetermined position while the carrier M of the present invention is fixed.

As described above, by using the method of advancing the carrier M while holding the cable 1 and the method of feeding the cable 1 with the carrier M fixed to a predetermined position of the narrow portion, The cable 1 can be sent to a narrow place where it cannot be sent by the usual method. When the cable 1 and the transport device M are taken out from the pipeline or the like, the cable 1 may be released from the grip of the transport device M and pulled out, and the transport device M may be moved backward by using the above operation. Good. In some cases, the transport device M may be left as it is until work such as rescue is completed.

The transfer device M described in the above embodiment uses compressed air as the pressure fluid, and uses the first annular base 3 and the second annular base 3.
The inner balloons 5 and 7 and the outer balloons 6 and 8 of the annular base body 4 are pressurized, and the rubber actuator 10 is used to expand and contract the space between the base bodies 3 and 4. The tension spring 11 is used for the contraction operation. Although hydraulic pressure can be used as the pressure fluid, compressed air is preferable in view of operability and maintainability.

Compressed air as a pressure fluid is previously stored in the pressure tank 17 by the motor 16,
Distribution ring 1 in which this compressed air is operated by a motor 15
4, the inner balloons 5, 7, outer balloons 6, 8 and the rubber actuator 10 are supplied in accordance with a predetermined operation pattern. The operation of the motor 15 is automatically controlled by a control device (not shown) according to a predetermined operation pattern.

[0027]

As is apparent from the above description, according to the cable conveying device of the present invention, not only is it easy to convey and insert a cable or the like into a narrow path, but also the conveying and inserting is self-propelled. Not only that, since it can be fixed at a predetermined position and only the cable can be conveyed and inserted, there is an effect that the applicable range can be expanded and the work efficiency and the like can be greatly improved. Although the present invention is an apparatus for carrying a cable, it can be used for carrying a long object such as a rope, a wire, a chain, or a belt-like object in addition to the cable.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of a carrying device according to an embodiment of the present invention by cutting it.

[Fig. 2] Fig. 2 is a diagram illustrating a method of carrying a cable by a self-propelled carrying device.
It is an insertion explanatory drawing.

FIG. 3 is a diagram illustrating the next state of FIG.
It is an insertion explanatory drawing.

FIG. 4 is a diagram illustrating the next state of FIG.
It is an insertion explanatory drawing.

FIG. 5 is a diagram showing the next state of FIG.
It is an insertion explanatory drawing.

FIG. 6 is a diagram showing the next state of FIG.
It is an insertion explanatory drawing.

FIG. 7 is a diagram showing the next state of FIG.
It is an insertion explanatory drawing.

FIG. 8 is a diagram showing the next state of FIG.
It is an insertion explanatory drawing.

FIG. 9 is a diagram illustrating the next state of FIG.
It is an insertion explanatory drawing.

FIG. 10 is an explanatory view of the conveyance / insertion of the cable showing the next state of FIG. 9;

FIG. 11 is a diagram for explaining the conveyance / insertion of the cable showing the next state of FIG.

FIG. 12 is an illustration of carrying / inserting a cable having a carrying device fixed thereto.

FIG. 13 is an explanatory diagram of cable conveyance / insertion showing the next state of FIG. 12;

FIG. 14 is an explanatory diagram of cable conveyance / insertion showing the next state of FIG. 13;

FIG. 15 is an explanatory view of the conveyance / insertion of the cable showing the next state of FIG.

FIG. 16 is an explanatory view of the conveyance / insertion of the cable showing the next state of FIG. 15.

FIG. 17 is an explanatory view of the conveyance / insertion of the cable showing the next state of FIG. 16;

FIG. 18 is an explanatory diagram of cable conveyance / insertion showing the next state of FIG. 17;

FIG. 19 is an explanatory diagram of the conveyance / insertion of the cable showing the next state of FIG. 18.

20 is an explanatory diagram of cable conveyance / insertion showing the next state of FIG. 19;

FIG. 21 is an explanatory diagram of cable conveyance / insertion showing the next state of FIG. 20.

[Description of sign]

DESCRIPTION OF SYMBOLS 1 Pipeline 2 Cable 3 1st annular base body 4 2nd annular base body 5,7 Inner balloon 6,8 Outer balloon 9 Connection body 10 Rubber actuator 11 Extension spring 13a-13e Piping 14 Distribution ring 15,16 Motor 17 Pressure tank

Claims (3)

[Claims] 1. Inside balloons 5 and 7 and outside balloons 6 and 8 are provided inside and outside the first annular base body 3 and the second annular base body 4, respectively, and the first annular base body 3 and The two annular bases 4 are connected by an expandable / contractible connecting body 9, and the inner balloons 5, 7 and the outer balloons 6, 8 are connected.
A conveying device for a cable or the like configured to be capable of supplying or discharging a pressure fluid. 2. The connecting body according to claim 1, wherein the connecting body 9 comprises a rubber actuator 10, a tension spring 11 and a spring holding body 12. 3. The connected body according to claim 1, wherein the pressure fluid is supplied to or discharged from the rubber actuator 10.