A slow rebound hydraulic limit buffer device for elevators

Abstract

The invention discloses a slow-rebounding hydraulic limit buffer device for an elevator. The slow-rebounding hydraulic limit buffer device comprises bases and a cylinder body, wherein the number of the bases is two, and a gap between the bases forms a guide groove; a lower cover is arranged below the bases; the cylinder body is fixedly arranged at the upper end of the lower cover; the upper end of the cylinder body is open, and an upper cover is detachably arranged at the upper end of the cylinder body; a horizontally-arranged colliding seat is arranged above the cylinder body; an outer buffer pad is arranged at the upper end of the colliding seat; a piston rod is arranged at the lower end of the colliding seat, sequentially penetrates through the upper cover and the lower cover, extends to the inner part of the guide groove, and is connected with a stop block in the guide groove; an upper buffer spring is arranged between the colliding seat and the upper cover. The slow-rebounding hydraulic limit buffer device disclosed by the invention is reasonable in structural design; by triple effects of the upper buffer spring, a lower buffer spring and hydraulic oil in the cylinder body, limit buffer within reasonable time and motion distance is realized; meanwhile, the rebounding can be effectively slowed down during rebounding, so that possible secondary injury to passengers due to quick release of elastic potential energy is avoided.

Description

Technical field [0001] The invention relates to the field of elevator equipment, in particular to a slowly rebounding hydraulic limit buffer device for elevators. Background technique [0002] The elevator buffer device is installed at the bottom of the elevator hoistway. When the elevator car fails and falls, it can play the final buffer, stop and protection function, so as to prevent the car from directly hitting the bottom and reduce the harm to the passengers in the elevator car. The buffer devices currently used in elevators are generally spring buffers. Although the spring buffer can quickly absorb impact energy, its rebound force is large, and the rapid release of elastic potential energy may cause damage to passengers again. Therefore, it is urgent to design a slow release Elevator limit buffer equipment with elastic potential energy. Summary of the invention [0003] The purpose of the present invention is to provide a slow rebound hydraulic limit buffer device for eleva...

AI Technical Summary

Problems solved by technology

The buffer devices used in elevators are generally spring buffers. Although the spring buffer can quickly absorb the impact energy, its rebound force is large, and the rapid release of elastic potential energy may cause harm to passengers again. Therefore, it is urgent to design a device that can release slowly. Elevator Limit Buffer Equipment Based on Elastic Potential Energy

Images