JP3908986B2 - Wire inspection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric wire inspection device for inspecting an electric wire itself or a state around the electric wire, such as an electric resistance of an electric wire connecting portion compressed and connected by a sleeve.
[0002]
[Prior art]
Conventionally, when measuring the electrical resistance of a connecting part of an overhead electric wire such as a railroad cable, for example, the electric wire is put in a power failure state, and it is raised to a height position reaching the electric wire by a ladder or the like, and both ends of the sleeve The resistance value is measured by bringing the electrode of the tester into contact with the tester.
In addition, there is known a device in which a measuring instrument is moved on the electric wire W by a traction device to measure, display, and record the electric resistance of the electric wire connecting portion (Japanese Patent Laid-Open No. 9-325163).
[0003]
[Problems to be solved by the invention]
Of the two conventional inspection methods described above, the former is forced to perform a high-place work that is dangerous and difficult to attach to the electric wire, and the work is inefficient. In the latter case, the device itself becomes large and complicated. In addition, there is a problem that a power outage is required for the work.
Accordingly, an object of the present invention is to provide an electric wire inspection apparatus that can be easily and safely attached to an electric wire while being in a live line state, even if it is a relatively heavy inspection device. .
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, in the present invention, an insulating guide bar 3 that hangs the mounting portion 2 at one end on the overhead electric wire W and hangs down the other end side in the length direction. And an elevator 4 that can be moved by itself. The elevator 4 is equipped with an electric wire inspection device 17, a control unit 18, and a drive power source 19. The electric wire inspection apparatus 1 is configured such that the insulating guide bar 3 is erected, the mounting portion 2 is hung on the overhead electric wire W, the elevator 4 is moved up along the insulating guide bar 3, and the inspection device 17 is moved closer to the electric wire W to perform the inspection work. Configure. The elevator 4 is supported by the frame 8 so that the frame 8 can be opened and closed so as to surround the insulating guide rod 3 and the rubber tire 16 is pressed against the outer periphery of the insulating guide rod 3 to be rotationally driven with a required frictional force. And a plurality of wheels 9 formed. The frame body 8 is provided with two frame members 10 and 11, which are hinged to each other at one end, and fastened to each other by a fastening member 13 at the other end, and are releasably coupled. Then, the rubber tires 16 of the wheels 9 are brought into pressure contact with the outer periphery of the insulating guide rod 3 in the tightened state of the two frame members 10 and 11 so that they can be moved up and down by a frictional force.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The example which applied the electric wire inspection apparatus of this invention to the resistance measuring apparatus of an electric wire connection part is demonstrated with reference to drawings.
1 and 2, an electric wire inspection apparatus 1 includes a mounting portion 2 extending in a wire extending direction of an electric wire W, an insulating guide bar 3 extending in a vertical direction and having a substantially T shape with the mounting portion 2, and an insulating guide. And an elevator 4 that moves up and down along the rod 3.
[0006]
The mounting portion 2 includes a connection bar 5, a clamp electrode 6 that is an electrode member fixed to both ends of the connection bar 5, and a clamp meter 7 that is a current measuring instrument fixed to a substantially central portion of the connection bar 5. It has. The clamp electrode 6 is brought into contact with both sides of the sleeve S connecting the electric wire W, and the clamp meter 7 is brought into contact with the sleeve S to measure the current, voltage, and resistance of the electric wire connecting portion. A driving power source and a control device for the measuring device are mounted on the elevator 4.
[0007]
As shown in FIGS. 2 to 4, the elevator 4 includes a rectangular frame body 8 that can be opened and closed and that is mounted so as to surround the insulating guide rod 3, and a total of eight wheels that are supported by the frame body 8 in the vertical direction. 9. The frame 8 includes two frame members 10 and 11 having a similar shape obtained by dividing a rectangular frame into two. The frame members 10 and 11 are hinged to each other by a hinge 12 at one end, and fastened to each other by a fastening member 13 at the other end, and are releasably coupled.
[0008]
A pair of wheels 9 are provided on the upper and lower sides of the legs 14 respectively supported on the inner sides of the four sides of the frame body 8 and supported by the legs 14 together with the motor 15. The four wheels 9 surround the insulating guide rod 3 so as to face each other in two places, upper and lower. The wheel 9 includes an elastic rubber tire 16 that contacts the insulating guide rod 3 with a sufficiently large frictional resistance. The rubber tire 16 of the wheel 9 is configured to be pressed against the outer periphery of the insulating guide rod 3 in a state where the two frame members 10 and 11 are tightened.
[0009]
The elevator 4 is equipped with an inspection device 17 electrically connected to various measuring devices of the mounting unit 2, a control unit 18 for controlling each unit, and a battery 19 as a driving power source for each unit. The insulating guide rod 3 is provided with a guide protrusion 3a extending in the axial direction in order to define the path of the elevator 4, and the protrusion 3a is slidable on the guide plate 20 fixed to the frame body 8 of the elevator. A receiving guide recess 20a is provided.
[0010]
Connector blocks 21 and 22 are attached to corresponding positions of the upper part of the elevator 4 and the upper part of the insulating guide bar 3, respectively. The connector blocks 21 and 22 are for electrically connecting the inspection device 17 on the elevator 4, the control unit 18, the battery 19 and the device on the mounting unit 2. The connector block 21 includes a guide pin 21a for guiding to an appropriate connection position.
In addition to controlling the operation of each part of the device, the control unit 18 may display the measurement result on a display (not shown), record it in a storage device, or output it with a printing device. An operator on the ground may perform the operation using a wireless controller (not shown).
[0011]
The electric wire inspection apparatus 1 is used by being attached to an electric wire W such as a feeder for a train line. First, holding the insulating guide rod 3, the mounting portion 2 is hung on the connection sleeve S of the electric wire W. Next, the elevator 4 is attached to the lower part of the insulating guide bar 3, and an operator on the ground operates the wireless controller or the like to raise the elevator 4 along the insulating guide bar 3. The elevator 4 opens the frame 8 by releasing the fastening tool 13, follows the insulating guide bar 3, and tightens the fastening tool 13 in a state where the protrusion 3 a and the guide recess 20 a are engaged with each other. Attach to 3. At this time, the elastic rubber tire 16 of the wheel 9 is in contact with the insulating guide rod 3 in a properly compressed state and supports the weight of the elevator 4. When the elevator 4 approaches the upper end of the insulating guide rod 3, the connector blocks 21 and 22 are coupled, the elevator 4 and the mounting portion 2 are electrically connected, and a sensor (not shown) detects this and the elevator 4 Stops. As described above, the wire inspection apparatus 1 first mounts the relatively light mounting portion 2 and the insulating guide rod 3 on the wire W. Then, the elevator 4 which is a heavy apparatus main body is attached to the insulating guide rod 3 and moved up by itself and automatically placed near the electric wire W.
[0012]
Current, voltage, resistance, etc. are measured, and each measured value is sent to the control unit 16 as an electrical signal, and the data is displayed on a display, recorded in a storage device, or output by a printing device as necessary. . When the electric wire inspection apparatus 1 is withdrawn after the measurement, the elevator 4 is lowered and removed from the insulating guide rod 3, and then the mounting portion 2 is removed from the electric wire W and lowered.
[0013]
In the above embodiment, the present invention is applied to the measuring device for the electric wire connection part. However, the present invention is not limited to this. For example, the camera is mounted on an elevator and the surface of the electric wire is photographed and inspected. The present invention can be applied to various inspection devices for inspecting this from a position close to the electric wire.
[0014]
【The invention's effect】
As described above, in the present invention, a relatively heavy device can be easily attached to an electric wire without forcing the work at a high position in a live state, so that the work can be performed efficiently, In addition, work safety can be ensured. Since the rack gear system is not used as the lifting means of the elevator, high manufacturing accuracy is not required, the insulating guide bar is reduced in weight, handling is easy, and the combination of the elevator and the insulating guide bar is also easy Has the effect of being
[Brief description of the drawings]
FIG. 1 is a front view of an electric wire inspection apparatus according to the present invention.
FIG. 2 is a schematic perspective view of an elevator.
FIG. 3 is a plan view of the elevator.
FIG. 4 is a front view of the elevator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electric wire inspection apparatus 2 Mounting part 3 Insulation guide rod 3a Guide protrusion 4 Elevator 6 Clamp electrode 7 Clamp meter 8 Frame body 9 Wheel 10 Frame member 11 Frame member 12 Hinge 13 Fastening member 14 Leg 15 Motor 16 Elastic rubber tire 17 Inspection apparatus 18 Control unit 19 Battery 20 Guide plate 20a Guide recess 21 Connector block 21a Guide pin 22 Connector block W Electric wire S Connection sleeve

Claims (3)

Installed in this elevator, an insulation guide bar that can be attached to the overhead wire and the other end side can be hung downwards, and an elevator that can move on the insulation guide bar in the length direction by itself. Inspected wire inspection device, elevator and inspection device control unit and drive power supply, stand up the insulation guide rod, hang the mounting part on the overhead wire, raise the elevator along the insulation guide rod, and connect the inspection device to the wire In the wire inspection device that conducts inspection work close to
The elevator includes an openable / closable frame that surrounds the insulating guide rod, and a plurality of wheels supported by the frame so that a rubber tire is pressed against an outer periphery of the insulating guide rod and rotated with a required frictional force. And
The frame body includes two frame members that are hinged to each other at one end and clamped to each other by a clamping member at the other end, and are releasably coupled.
An electric wire inspection apparatus, wherein a rubber tire of the wheel is pressed against an outer periphery of the insulating guide rod in a coupled tightening state of the two frame members. 2. The guide according to claim 1, wherein a guide that defines a path of the elevator is provided on the insulating guide rod, and a corresponding guide that engages with the guide of the insulating guide rod is provided on a frame of the elevator. Wire inspection equipment. The guide of the insulating guide rod is a ridge provided on the outer periphery so as to extend in the axial direction, and the corresponding guide of the elevator is a guide provided on the frame so as to slidably receive the ridge. The wire inspection device according to claim 2, wherein the wire inspection device is a recess.

Images