3results about How to "Fast demolition" patented technology

This invention discloses a sleeve with anti-slip function, relating to the field of sleeves. It includes a sleeve assembly with a coating and clamping mechanism at its top. The coating and clamping mechanism includes a mounting box, the bottom of which is fixedly connected to the top of the sleeve body. The coating and clamping mechanism is used to clamp the required screw and adjust the clamping distance according to the screw size. During the adjustment of the clamping distance, the coating and clamping mechanism controls the outflow of lubricating oil stored in the oil reservoir. During screw rotation, it applies lubricating oil to the mounting surface of the screw and the screw fixing point. A cam synchronously pushes a hollow shaft downwards during rotation, causing the lubricating oil inside the oil reservoir to be discharged through the outer surface of the hollow shaft, the oil guide hole at the bottom, and the gap between the hollow shaft and the oil guide tube. This reduces the frictional resistance between the screw and the screw fixing point, improves the smoothness of disassembling rusty screws, and thus increases the disassembly speed of rusty screws.

The utility model discloses an integral steel formwork system for a rectangular aqueduct. The steel formwork system comprises a bottom formwork system, an outer side formwork system, an inner side formwork system, an inner supporting system, a top cross beam system and an aqueduct pull rod hanging formwork system. The top beam system is hinged to the top end of the outer side mold system and the top end of the inner side mold system. The bottom end of the outer side die system is fixedly connected with the bottom die system; the inner supporting system supports the inner side formwork system, and the aqueduct pull rod formwork hanging system is arranged between the top of the inner side formwork system and the top cross beam system. Rectangular aqueduct pouring areas are formed between the outer side mold system and the inner side mold system and between the inner side mold system and the bottom mold system. The problems that an existing groove body formwork is low in efficiency, high in investment, long in construction period, prone to causing damage to a concrete structure and poor in construction convenience are solved.

The invention discloses a disassembly and assembly construction method for parallel heat exchangers in a narrow space. Hoisting holes are formed in an upper-layer frame platform of a heat exchanger to be disassembled, and steel pipes are laid at the hoisting holes to serve as hanging points of chain blocks; the to-be-disassembled heat exchanger and the steel pipe are connected through a chain block, the to-be-disassembled heat exchanger is lifted to a preset height, a guide rail is laid above the support, and a plurality of carrying tanks are placed on the guide rail. And the to-be-disassembled heat exchanger is lowered to the carrying tank through the chain block, the to-be-disassembled heat exchanger is horizontally moved out of the outer edge of the steel frame where the to-be-disassembled heat exchanger is located along the guide rails through the carrying tank under the cooperation of traction of the crane and the chain block, connection between the chain block and the to-be-disassembled heat exchanger is disconnected, and the to-be-disassembled heat exchanger is hoisted away through the crane. And during reassembly, the upper heat exchanger is firstly installed, then the lower heat exchanger is installed, the installation step is reverse operation when the heat exchangers are dismantled, and then the lower heat exchanger and the upper heat exchanger are assembled into a parallel heat exchanger and integrally hoisted through a chain block. The construction efficiency and safety are effectively guaranteed.