Oil buffer for elevator

Abstract

The invention discloses an oil buffer for an elevator. The oil buffer comprises screws, a rubber gasket, a spring seat, a beam tube ring, PVC canvas, a compression spring, a piston rod, a cover, a piston, a sealing screw, a convex block, a bottom plate, a tube and an oil cylinder. The oil buffer is characterized in that the rubber gasket is mounted on the spring seat through the screws; the PVC canvas is mounted at the bottom of the spring seat through the beam tube ring in a surrounding manner, and the compression spring and the piston rod are surrounded in the middle by the PVC canvas; and the piston rod is mounted in the compression spring in a penetrating manner, one end of the compression spring is in contact with the spring seat, and the other end of the compression spring is in contact with the cover. When a car or a counterweight acts on the buffer, oil can flow under the action of pressure, and the oil flows into an oil storage cavity from an inner cavity of an oil cylinder through small throttle holes; and by means of the buffer function of the small throttle holes on the car or the counterweight, good buffer performance is achieved, and the safety of the car or the counterweight is guaranteed.

Description

technical field [0001] The invention relates to the technical field of elevator safety, in particular to an elevator hydraulic buffer used for elevator buffering and stopping. Background technique [0002] The buffer is the elevator safety device that provides the last kind of safety protection. It is installed in the shaft pit of the elevator, directly below the car and counterweight. When the elevator is moving upwards or downwards, due to wire rope breakage, traction friction, insufficient braking force of the brake, or control system failure, and the elevator exceeds the bottom or top floor of the terminal landing, the buffer will act as a buffer to avoid the elevator car. Or the counterweight directly hits the bottom or the top to protect the safety of passengers and equipment. After the spring buffer is hit, it converts the kinetic energy and potential energy of the car or the counterweight into the elastic deformation energy of the spring, and the car and the counte...

AI Technical Summary

Problems solved by technology

[0003] When the car or the counterweight acts on the buffer, the oil will flow under the action of pressure, and sometimes even splash out. Therefore, it is necessary to check the oil level frequently and replenish it when it is missing. This structure consumes a lot of oil and pollutes the environment. Large, when the oil level is too long, it is easy to cause safety accidents

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