Manhole cover opening and closing movement device

A mobile device and rolling device technology, which is applied in water conservancy projects, artificial islands, underwater structures, etc., can solve the problems of heavy lifting and moving, unsafe, time-consuming and labor-intensive, etc., to reduce labor intensity, avoid structural damage, The effect of ensuring work safety
CN102433898AInactive Publication Date: 2012-05-02国网山东省电力公司超高压公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
国网山东省电力公司超高压公司
Publication Date
2012-05-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a manhole cover opening and closing movement device which comprises a frame; the two opposite sides of the frame are respectively provided with a rolling device which comprises a step-shaped wheel axle and a wheel axle bracket; the step-shaped wheel axle comprises two cylindrical surfaces with unequal excircle diameters; the smaller cylindrical surface is matched with the upper surface of the frame in a contacting way; the step-shaped wheel axle is provided with an inner hole and is connected with the wheel axle bracket by a pin shaft arranged in the inner hole; the upper part of the rolling device is provided with a catching module; the rolling device is connected with the catching module by a hoisting module; the frame has an angle iron welding structure; the wheel axle bracket of the rolling device has a channel steel structure; a channel steel wall is provided with a screwed hole which is connected with a screw rod by screw thread; the outer edge of the frame is respectively provided with an opening block groove I and an opening block groove II; the position of the opening block groove II is matched with that of the rolling device; and the opening block groove I and the opening block groove II are matched with the screw rod. The manhole cover opening and closing movement device is simple and reliable in structure, convenient to assembled and disassemble and move and suitable for lifting and moving a detection manhole cover which is heavy and inconvenient in traffic.
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Description

technical field

[0001] The invention relates to the technical field of hoisting equipment, in particular to a manhole cover opening and closing moving device. Background technique

[0002] The well cover opener of the prior art is mainly aimed at inspection well covers with lighter weight, and is not suitable for carrying and hoisting heavier well covers. For heavy manhole covers used in remote areas and places with inconvenient transportation, such as in power production, it is necessary to guide the loop current of the DC transmission line into the ground through the grounding electrode. The good operation of the grounding electrode ensures that the loop current is efficiently and quickly introduced into the ground. The safe operation of grounding electrodes is directly related to the reliability of HVDC transmission lines. The operating state of the grounding electrode can be judged by the water level and temperature of the groundwater in the soil layer where it is locat...

Claims

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