2results about How to "Guaranteed safety" patented technology

This utility model discloses a maintenance device for an electric tricycle door lock controller, comprising a maintenance device body. A fixing frame is fixedly connected to the right side of the maintenance device body. A groove is formed on the right side of the fixing frame, and a slider is slidably connected to the inner cavity of the groove. Two symmetrical sliding rods are fixedly connected to the inner cavity of the groove, and the sliding rods pass through the slider and are slidably connected to it. This utility model, by placing the connector of the maintenance device on top of clamping block one, rotating the torsion block causes the threaded rod and the slider to move threadedly. Through the limiting of the sliding rods, the slider causes clamping block two to slide downwards, thereby clamping the connector of the maintenance device with clamping block two and clamping block one. This achieves the purpose of fixing the connector of the maintenance device through a fixed structure, preventing the connector of the maintenance device from falling during transportation and handling, and ensuring the safety of the maintenance device during handling.

The application discloses a cavity type prefabricated segment assembled pier top beam and a construction method thereof. The top plate of the pier top beam is divided into a first top plate and a second top plate, the second top plate is located in the middle of the first top plate, the bottom plate is divided into a first bottom plate and a second bottom plate, the second bottom plate is located in the middle of the first bottom plate, the web plate is divided into a first web plate and a second web plate which are mutually attached, the pier top beam structure comprises a shell and an inner cavity part, the shell comprises the first top plate, the first bottom plate, the first web plate and a flange plate, and the shell is a prefabricated reinforced concrete component; the inner cavity part comprises the second top plate, the second bottom plate and the second web plate, and the inner cavity part is a cast-in-situ reinforced concrete structure. The prefabricated shell is light and thin, the prefabricated shell reduces the weight of the prefabricated segment by 30-50% compared with the prefabricated pier top beam, and is convenient for transportation and hoisting; the pier top segment beam has global stability and seismic performance, the wet joint design of the cast-in-situ beam is removed, the installation speed of the segment assembly is ensured, and the longitudinal splicing joint of the beam is reduced, and the safety of the beam is ensured.