Fall arrest safety manhole cover assembly

Abstract

The invention discloses an anti-falling safety well lid assembly. A through hole used for water flowing is opened on the well lid; an anti-falling screen plate comprises a positioning barrel, a plurality of radiating ribs and a plurality of reinforcing ribs, wherein a plurality of radiating ribs and a plurality of reinforcing ribs are arranged in a spider web centering on the positioning barrel; two axial ends of the outer sleeve of the buffering mechanism are sealed by a sealing plate, the inner sleeve penetrates through the sealing plate at two axial ends of the outer sleeve and is sleeved in the outer sleeve; a plurality of first through holes are opened on the axial bottom end sealing plate of the outer sleeve; a plurality of leaf bending type strip-shaped shells are convexly arrangedon the surface of the axial top end sealing plate of the outer sleeve and are arranged in a turbine shape, and a plurality of liquid distribution holes are opened on the same side walls of the shells;the outer wall of one axial end of the center pipe is rotationally connected with the inner wall of the inner sleeve by a bearing and the other axial end is movably connected with the positioning barrel; and a plurality of second through holes are opened on the side wall of the center pipe. According to the anti-falling safety well lid assembly, the strong water flow impact force generated by overflow can be effectively dispersed and reduced, and casualties and vehicle damage since the well lid is jacked up and lost are avoided.

Description

technical field [0001] The invention relates to the technical field of urban road infrastructure, in particular to an anti-fall safety manhole cover assembly. Background technique [0002] Manhole cover, the covering on the road, can be seen everywhere in the streets and alleys of cities and towns. It is used to cover roads or deep wells in homes to prevent people or objects from falling. According to the material, it can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. Usually round. It can be used in green belts, sidewalks, motorways, docks, alleys, etc. [0003] Due to the short-term heavy rainfall and insufficient capacity of drainage pipes, once the pipe network leaks water, the impact force will be greater, and the manhole cover will be lifted up or even fly. Passers-by cannot see the situation under their feet. Accidents of washing away occurred, and vehicle damage and personal casualty accidents o...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: most of the prior art uses anti-falling nets to prevent people or foreign objects from falling into the well, and it does not alleviate the problem that the well cover will be lost due to backflow of the pipe network. The present invention provides An anti-fall safety manhole cover assembly that solves the above problems

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