A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses an anti-burglary manhole cover which comprises a manhole cover body and slots located on the wall of a well. The manhole cover body is shaped like a circle, a through hole is formed in the manhole cover body and penetrates through the diameter of the manhole cover body, clamping parts are arranged symmetrically in the through hole, each clamping part is composed of a spring one and a clamping rod which are connected with each other, a lifting block is arranged between the symmetrical springs one, an upper open pore formed in the lifting block is matched with the bottom end of a lifting rod on the lifting block, the upper portion of the lifting rod passes through a round hole formed in the center of the manhole cover body, each slot is provided with a spring two, and one end of each spring two is fixedly connected with the bottom of the corresponding slot. The anti-burglary manhole cover has the advantages that the structure is simple, the cost is low, the stability is very good, and the anti-burglary effect is very good.
The invention discloses an anti-burglary manhole cover which comprises a manhole cover body and slots located on the wall of a well. The manhole cover body is shaped like a circle, a through hole is formed in the manhole cover body and penetrates through the diameter of the manhole cover body, clamping parts are arranged symmetrically in the through hole, each clamping part is composed of a spring one and a clamping rod which are connected with each other, a lifting block is arranged between the symmetrical springs one, an upper open pore formed in the lifting block is matched with the bottom end of a lifting rod on the lifting block, the upper portion of the lifting rod passes through a round hole formed in the center of the manhole cover body, each slot is provided with a spring two, and one end of each spring two is fixedly connected with the bottom of the corresponding slot. The anti-burglary manhole cover has the advantages that the structure is simple, the cost is low, the stability is very good, and the anti-burglary effect is very good.