JPH01136078A - Insertion type cable inspector - Google Patents

Abstract

PURPOSE:To achieve an inspection of a cable at a narrow part with a small apparatus without being endangered, by inserting a hollow pipe for insertion into the narrow part to feed a gas sensor with a gas being sucked in the perimeter thereof. CONSTITUTION:A sensor box 2 is hung on a cable 1 with a guide pulley device 10 while an expandable hollow pipe 7 for insertion is provided on the side thereof as insertion jig. In the inspection of the cable 1, a support bar 6 is held and operated to move the box 2 to a cable protecting cover 8 and the pipe 7 is extended to be inserted into the cover 8. Then, a fan 11 is turned to suck a gas and the amount thereof is measured with a gas sensor 12. Then, information on the measured value is observed with an information output device 4 via an information transmitter (signal line) 3 to inspect degrading of the cable 1.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an insertion type cable inspection device that is small, lightweight, and easy to transport for human operators to inspect cables from the ground to the air. .

2. Description of the Related Art Conventionally, aerial cables have been inspected by a worker riding on a ladder or a special vehicle-mounted elevating device, or by having a worker sit on a special stand attached to the cable support line.

Both are dangerous because people work at heights, and ladders and dedicated platforms in particular place stress on the support cables, which can lead to cables being cut. Although the elevating device is the safest, it requires a sufficiently large space, which limits its application area, requires multiple personnel, and lacks simplicity.

There has also been a device that detects cable damage by detecting gas leaks from gas-filled cables, but this device has the drawback of lacking versatility because it is limited in scope.

Furthermore, it has the disadvantage that it cannot be applied to locations where the cable is covered with a cable protection cover or the like.

Problems to be Solved by the Invention The insertion-type table inspection device of the present invention overcomes the conventional drawbacks, allows an operator to inspect cables in the air while being on the ground, and allows for manual transportation. The purpose is to achieve a reduction in size and weight, reduce restrictions on personnel and the work environment, and enable inspection even in locations where cables are covered with protective covers.

Means for Solving the Problems The insertion type cable inspection device of the present invention is for observation of narrow spaces, which is composed of a gas sensor, a device for transmitting information from the gas sensor, a device for outputting the information, and a hollow pipe for insertion. The sensor device is equipped with an insertion jig, and is configured so that these sensor devices can be moved along the telephone cable and hanging wire.

Function: The insertion type cable inspection device of the present invention allows a worker on the ground to move the gas sensor device along the cable, detect the deterioration state of the cable with the gas sensor, and transmit the information from the gas sensor via the information transmission device and the information output device. By providing an insertion jig consisting of a hollow insertion pipe, it is possible to observe narrow areas.

Embodiment An embodiment of the insertion type cable inspection device of the present invention will be described with reference to the drawings.

FIG. 1 shows the use of the insertion type cable inspection device of the present invention.
FIG. 2 is a schematic front perspective view showing a situation in which the deterioration state of telephone cables, aerial cables, or hanging wires is being observed. FIG. 2 is a schematic enlarged perspective view of the tip of the insertion type cable inspection device.

In the drawings, l is a telephone cable, aerial cable, or suspension line, 2 is a sensor box, 3 is a signal line (information transmission device) that transmits the information of the gas sensor/2, ≠ is an output device that outputs the information of the gas sensor, and j is the 6 is an extensible support rod, 7 is an extensible inserting hollow pipe that is an insertion jig, ♂ is a cable protection cover, RI is a utility pole, IO is a guide pulley device, ll is a gas suction fan , /2 is a gas sensor,
13 indicates a processing circuit.

The insertion cable inspection device of the present invention is a cable inspection device for observing the deterioration state of telephone cables, aerial cables, hanging wires, metal fittings, etc., and includes a gas sensor 12 and a device (signal line) that transmits information about the gas sensor 12. 3, a device for outputting the information, and an insertion jig for narrow area observation consisting of an expandable and retractable hollow insertion pipe 7. A guide pulley device IO is provided so that the sensor device can be moved by holding the extendable support rod 6.

In the present invention, the operator 3 holds the extendable support rod t, moves freely over the cable using the guide pulley device 10, moves the sensor box 2 to the cable protection cover ♂, and then moves the sensor box 2 to the hollow pipe 7. Stretch it out and insert it into the protective cover g.

Next, turn the fan // to suck in the gas, and the gas sensor 12
The amount is measured by Then, the deterioration state of the cable can be checked by observing the information on the measured amount via the information transmission device (signal line) 3 and the information output device μ.

The main feature of the present invention is that it allows workers on the ground to inspect cables remotely, unlike the conventional method where humans climbed directly to high places to inspect cables. be.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention allows an operator to inspect cables in the air while remaining on the ground without risking climbing to a high place.

In addition, since it is made smaller and lighter, one worker is sufficient, and there are almost no restrictions on the work place, which improves work efficiency.

[Brief Explanation of the Drawings] Figure 1 shows how the insertion type cable inspection device of the present invention is used to
FIG. 2 is a schematic front perspective view showing a situation in which the deterioration state of a telephone cable, an aerial cable, or a hanging line is being observed. FIG. 2 is a schematic enlarged perspective view of the tip of the insertion type cable inspection device. /: Telephone cable, aerial cable or suspension line, 2: Sensor box, 3: Signal line (information transmission device), 47
! ＋: Information output device, j': Worker, 6: Expandable support rod, 7: Expandable hollow pipe for insertion, ♂2 cable protection cover, ri: Utility pole, IO=Guiding pulley device, ll: Gas Inhalation fan, /2: Gas sensor, l3:
processing circuit. Patent applicant: Nippon Telegraph and Telephone Corporation Representative patent attorney: Isao Abe

Claims (1)

[Claims] A cable inspection device that observes the deterioration state of telephone cables, hanging wires, metal fittings, etc., includes a gas sensor, a device that transmits information from the gas sensor, a device that outputs the information, and a hollow pipe for insertion. An insertion-type cable inspection device characterized in that the sensor device is equipped with an insertion jig for the purpose of making it possible to move these sensor devices along telephone cables and hanging wires.