The invention creatively provides a freight elevator. The freight elevator comprises a tractor, a guide rail, a counterweight device, a safety device, a signal operating system and a car; a hydraulic cylinder is arranged at the bottom part of a shaft; a traction steel wire rope is connected to the upper end of the car, and while a hydraulic cylinder which is a telescopic hydraulic cylinder is connected to the lower end of the car; a piston of the telescopic hydraulic cylinder is a multi-stage piton; the telescopic hydraulic cylinder comprises a first telescopic hydraulic cylinder, a second telescopic hydraulic cylinder and a third telescopic hydraulic cylinder which form a regular triangle in the center of the bottom part of the car, and the first telescopic hydraulic cylinder, the second telescopic hydraulic cylinder and the third telescopic hydraulic cylinder are the top points of the regular triangle. With the adoption of the freight elevator, the weight of freight to be carried is increased, and the bearing capacity is improved; meanwhile, the safety is improved; the elevator can slowly lower down under the supporting of the piston in case that the traction steel wire rope is broken.
Freight elevator
2015-05-27
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |