JP2003020668A - Manhole allowing inspection optionally without removable of manhole lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems in conventional cleaning work wherein there are a great number of anxious factors such as safety flaws of a worker and traffic disturbance to residents in the working area. SOLUTION: When a television camera and a high-pressure nozzle are inserted optionally into the inside of the manhole, monitoring can be carried out by means of the camera without opening a manhole lid. Operation can be carried out without any danger accompanying manhole lid opening operation or without causing any traffic disturbance. In this way, the manhole can be cleaned safely and easily maintained and managed, and consequently, various problems about cleaning the manhole can be solved. This system is applicable to all the manholes.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention monitors a manhole by inserting a television camera among several pipes extending from a manhole to an operation panel. After confirming the dirt, a high-pressure washing machine is connected to the washing pipe for washing. Cleaning can be performed while checking with a television camera. It is possible to select several pipes installed according to the angle and freely use the inspection effect and the cleaning effect. Since the television camera and the high-pressure washer can be used in common for all manholes by preparing one set when necessary, the cost required for the equipment can be reduced, traffic obstruction can be eliminated, and work can be performed safely. 2. Description of the Related Art Conventionally, a manhole cover is opened about once or twice a year to transport a high-pressure cleaning device and a water tank. The cost was high due to the health risks of inspection and the generation of pollution due to bad smell, and this was one of the major problems of cleaning. Heretofore, there have been the following disadvantages. 1 Conventionally, it was impossible to carry out frequent cleaning because a machine had to be carried in for cleaning. 2. At least two workers were required for cleaning, and work on the road was occupied by the road, which hindered road operation and caused inconvenience to nearby residents. [0004] Since a television camera and a high-pressure nozzle can be inserted into the manhole at any time and monitored by the camera, the manhole cover can be monitored without opening.
Work can be done without the danger of opening the manhole cover and road traffic. [0005] The present invention uses a high-pressure washing water nozzle and a television camera in a manhole at the time of installation and inspection (when necessary). Safety while opening the manhole and eliminating traffic obstacles. [0008] (1) The maintenance of the inside of the manhole is facilitated by the installation of the television camera. 2. High pressure washing was performed when necessary, which prevented scum and odor. 3 The safety of workers was further secured.

[Brief description of the drawings] FIG. 1 is an exploded view of the present invention. [Explanation of symbols] 1 insertion tube 2 Manhole 3 submersible pump 4 Water level gauge 5 Pump control panel 6 service poles

Claims (1)

Claims: 1. In order to facilitate inspection and cleaning of the manhole pit, for example, three polyethylene pipes of about 50 mm are attached to the manhole and extended to the vicinity of the operation panel of the manhole pump. And fix it. Normally, a cap is installed at the end of the pipe to prevent the emission of odor and toxic gas. 2. At any time, insert a TV camera from this pipe, monitor the inside of the manhole to check the degree of contamination, and if the pollution is severe, shower pressure water from other pipes to eliminate sludge accumulation. . 3. Inspection with a TV camera during and after showering to confirm the cleaning effect. 4. After inspection and cleaning, cap the pipe again and complete the work.