A power cable hydraulic anti-theft manhole cover

Abstract

The invention discloses a power cable hydraulic anti-theft well lid. The power cable hydraulic anti-theft well lid comprises a well cover, a well ring and a hydraulic lock mechanism, wherein the hydraulic lock mechanism is used for locking the well cover. The well cover is connected with the well ring through a hinge pin. The hydraulic lock mechanism is arranged at the bottom of the well cover. The hydraulic lock mechanism comprises a hydraulic oil cylinder and an oil conveying pipe, wherein the oil conveying pipe is connected with the hydraulic oil cylinder. A lock and a lock reset spring are squeezed by a piston to move and are arranged on the wall of the oil cylinder. A spring which drives the piston to reset is arranged in the oil cylinder. The well cover is further provided with an oil injection hole which is communicated with the oil conveying pipe, and an oil injection hole plug which blocks the oil injection hole. When the well cover is opened, a hydraulic pump needs to be used for injecting oil into the hydraulic oil cylinder, the piston is driven to move so as to enable the lock to retreat, and therefore the well cover can be opened. The hydraulic lock mechanism is separated from the hydraulic pump, the anti-theft effect can be achieved only in the operating process, the hydraulic lock mechanism can be opened only through a special tool, and therefore the anti-theft performance of the well lid is enhanced, the hydraulic lock mechanism is simple in structure, the well lid is convenient to open or close, and the problem that the well lid is easily stolen is thoroughly solved.

Description

technical field [0001] The invention relates to a manhole cover, in particular to a power cable hydraulic anti-theft manhole cover. Background technique [0002] In major cities across the country, the theft of various manhole covers has been repeatedly prohibited, resulting in the loss of national property, innocent passers-by being injured or even fatal accidents occur frequently. It has become a major problem that has plagued owners such as water supply, gas supply, drainage, telecommunications, and electric power for a long time. Especially after the power cables are damaged, large-scale power outages and other vicious accidents are caused, which endangers the safety of the power grid and causes the country and enterprises to suffer major economic losses. [0003] At present, the existing anti-theft devices for various manhole covers include: iron chain connection method, hinge connection method, stop counter-rotation technique method, bolt hole blocking method, joint l...

AI Technical Summary

Problems solved by technology

Especially after the power cables are damaged, large-scale power outages and other vicious accidents are caused, which endangers the safety of the power grid and causes the country and enterprises to suffer major economic losses.

[0003] At present, the existing anti-theft devices for various manhole covers include: iron chain connection method, hinge connection method, stop counter-rotation technique method, bolt hole blocking method, joint linkage method, etc. However, these methods have different aspects in different ways. Some of them have poor anti-theft effect and are easy to be stolen, some require high processing precision and high cost, and it is difficult to solve the problem of "anti-rust death"

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