Safety municipal well lid demounting structure and demounting method thereof

Abstract

The invention provides a safety municipal well lid demounting structure and a demounting method thereof, and belongs to the field of municipal engineering equipment, solving the problem of difficultyin demounting of existing well lids. The safety municipal well lid demounting structure comprises a well lid and a demounting tool. The well lid comprises a well base and a lid body. The inner wall ofthe well base is provided with a stop ring and a lock groove. A demounting hole is formed in the lid body. A fixing groove is formed in the bottom face of the lid body. A locking block is embedded into the fixing groove fittingly. A rod groove is formed in the outer wall of the locking block. A lock hole is formed in the lid body. A lock rod penetrates the lock hole. The demounting tool comprisesa demounting ring and an adjusting ring. An upper connection base and a lower connection are fixedly arranged on the demounting ring and the adjusting ring. A through hole is formed in the upper connection base. A stop sleeve is arranged on the lower connection base. A demounting mechanism comprises a demounting rod, an adjusting rod and a fixing rod. The bottom end of the adjusting rod is hingedwith the top end of the demounting rod. The top end of the adjusting rod is fixed to the upper connection base. The fixing rod is connected with the bottom end of the demounting rod through a connection rod. A well lid has good anti-theft performance and is convenient to demount.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering equipment, and relates to a safe municipal manhole cover disassembly structure and a disassembly method thereof. Background technique [0002] Existing manhole covers are generally pulled up and opened by disassembly tools, which is difficult to disassemble, resulting in poor anti-theft performance. At the same time, when the manhole cover is being maintained, a deep well will be formed on the road surface, so that passing pedestrians or vehicles will fall into the deep hole inadvertently , a security incident occurred. [0003] The existing application number is 201610893655.5, which is a Chinese invention patent named "An Anti-theft Municipal Manhole Cover Disassembly Structure". , screw the disassembly rod to the disassembly hole, and make the disassembly rod press down on the cover plate, so that the steel plate rotates around the pin shaft and separates from the slot to disasse...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the cover body is often under pressure and the use environment is complex, the internal thread of the disassembly hole is easily damaged by pressure or corrosion, and it is extremely difficult to keep it intact. After damage, it cannot be used to install and disassemble the rod;

[0005] 2. Due to the need for multiple disassembly rods to cooperate, it is necessary to screw and fix the disassembly

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