JPH07288909A - Monitor system for overhead transmission line - Google Patents

Abstract

PURPOSE:To secure the safety in maintenance work by mounting a television camera on a self traveling lift which ascends or descends, engaging with the guide rail of a fall preventive device installed on a tower, and monitoring the image information of the television camera with a television image receiver on ground by the remote control from on the ground. CONSTITUTION:A device A on a tower is constituted by mounting a pan tilter 2, which operates a television camera (TV) up and down, right and left, a video transmitter 4 which transmits sound signals to ground, a controller receiver 5, which receives the control signals TV1, the pan tilter 2, and a lift 3, and a power battery 6 for them on the lift 3. For the device A on a tower, the lift 3 is provided with a sprocket engaging with the slot of a guide rail, whereby it goes up and down. A worker for maintenance inspects the places required in view of maintenance by operating the lift 3 and TV1 by a controller transmitter 7 while watching a TV picture receiver 8 on the ground.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead power transmission line monitoring system.

[0002]

2. Description of the Related Art Conventionally, there is no particular monitoring system for maintenance and inspection of overhead power transmission lines for grasping the status of overhead power transmission lines, electric wire clamps, insulators, spacers, steel towers and the like. Therefore, for the maintenance and inspection of the overhead power transmission line, maintenance workers patrolled the site, climbed directly to the tower and visually inspected it.

[0003]

[Problems to be Solved by the Invention] However, 500 kV
When it comes to overhead transmission lines of a class, some towers can reach as high as 100m. Besides, it is dangerous and difficult for a person to rise by manpower. In particular, maintenance workers who have abundant maintenance experience and have specialized maintenance knowledge are getting older, and it is becoming difficult to engage in ascending work, which makes it difficult to perform appropriate maintenance inspections. Moreover, since the conventional maintenance inspection is performed by the visual inspection of the maintenance worker, there is a problem that it is difficult to keep a record of the maintenance inspection.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and provides an overhead power transmission line monitoring system which enables maintenance and inspection by operation from the ground.
Utilizing a guide rail of a fall prevention device installed on a steel tower of an overhead power transmission line, a TV camera is mounted on a self-propelled elevating device that engages with the guide rail to elevate, and controls the TV camera and controls the elevating device The control is performed by remote control from the ground, and the video information of the TV camera is monitored by the TV receiver installed on the ground.

[0005]

1 is a block diagram of a concrete example of a monitoring system for an overhead power transmission line of the present invention, FIG. 3 is an external view of a tower apparatus in the monitoring system of FIG. 1, and FIG. The same figure (b) is a side view. As shown in FIG. 1, the monitoring system of the present invention is composed of a tower top device A and a ground device B. The device A on the tower is a small television camera 1, a pan tilter 2 for moving the television camera 1 vertically and horizontally, a video transmitter 4 for transmitting video and audio signals of the television camera 1 to the ground, a television camera from the ground. 1, a controller receiver 5 for receiving control signals from the pan tilter 2 and the lifting device 3, and a power supply battery 6 for these are mounted on the lifting device 3. In this case, a camera for taking pictures may be mounted instead of the television camera.

Normally, the steel tower 21 of the overhead power transmission line is shown in FIG.
As shown in, the guide rail 22 of the fall prevention device is installed. The above apparatus A on the tower utilizes this guide rail 22, and as shown in FIG.
The sprocket 12 that engages with is provided on the lifting device 3 and is configured to move up and down along the guide rail 22. The sprocket 12 is driven by the DC motor 14 via the speed reducer 13.

The ground device B comprises a controller transmitter 7 for transmitting control signals for the television camera 1, pan tilter 2, and lifting device 3, a television receiver 8, a VTR 9 and a power supply battery 10 for these.

[0008] The maintenance worker operates the elevating device 3 and the television camera 1 by the controller transmitter 7 while watching the TV receiver 8 on the ground, and inspects the places necessary for maintenance. Then, the situation of the power transmission line and the situation in the vicinity thereof are monitored and recorded in the VTR 9 as necessary. In this case, the UHF radio 11 is used for the transmission of the video and audio signals of the television camera 1 and the transmission of the controller signal, but an optical fiber cable may be used instead of the radio.

[0009]

As described above, according to the overhead power transmission line monitoring system of the present invention, it is not necessary for a maintenance worker to climb up to a steel tower, and the maintenance work can be monitored from the ground. You can reduce the work and work safety,
Even senior citizens can perform maintenance and inspection work. Since the VTR can record images and sounds, the inspection work results can be easily organized and managed, and the manager can grasp the situation of the site without going to the site.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a specific example of a monitoring system for an overhead power transmission line of the present invention.

FIG. 2A is a schematic view of a steel tower, and FIG. 2B is a state diagram of a guide rail installed in the steel tower and a sprocket engaged with the guide rail.

3A and 3B are external views of a tower top device in the monitoring system of FIG. 1, where FIG. 3A is a front view and FIG. 3B is a side view.

[Explanation of symbols]

 A Tower equipment B Ground equipment 1 TV camera 2 Pantilta 3 Lifting device 4 Video transmitter 5 Controller receiver 6,10 Battery 7 Controller transmitter 8 TV receiver 9 VTR 11 Radio wave 12 Sprocket 13 Speed reducer 14 Motor 21 Steel tower 22 Guide rail 23 oblong hole

Claims (1)

[Claims] 1. A television camera is mounted on a self-propelled lifting device that uses a guide rail of a fall prevention device installed on a steel tower of an overhead power transmission line and engages with the guide rail to control the television camera. And a system for monitoring an overhead power transmission line, characterized in that the lifting device is controlled by remote control from the ground, and video information of a TV camera is monitored by a TV receiver installed on the ground.