Reducing damping type safe elevator system

Abstract

The invention discloses a reducing damping type safe elevator system which comprises an elevator car body and a buffer assembly. The buffer assembly comprises a buffer component and a reducing damping component; the buffer component is used for preventing the elevator car body from striking the bottom rigidly; the reducing damping component comprises a cylinder body, a damping piston and a piston rod which is fixedly connected with the damping piston, the piston rod and the buffer component are jointed in the stroke that the buffer component is compressed by the elevator car body and rebounded, and reducing damping is formed by the damping piston for the buffer component. According to the reducing damping type safe elevator system, the joint of the reducing damping component is used for restricting the speed of the rebound before the buffer of striking the bottom of a car is finished, due to the fact that the reducing damping component exists, and the buffer stroke and the elasticity coefficient of the buffer component can be increased, so that the buffer can be achieved more gently, quick rebound can be avoided through using reducing damping after the buffer, and the final buffer effect is guaranteed; accidents caused by secondary bounces due to larger elasticity coefficient of a buffer spring or longer compression stroke are avoided.

Description

technical field [0001] The invention relates to a safety system for special equipment, in particular to a safety system for a box elevator bottoming out. Background technique [0002] The van elevator is a means of transportation for vertical transportation, which is closely related to people's daily life; the existing van elevator is mainly composed of a traction machine, a control cabinet, a car, guide rails, etc., to achieve relatively rapid up and down ; In order to achieve uplink and downlink and install related equipment, elevator shafts will be built in buildings or other places where van elevators are used to achieve smooth operation. [0003] The uplink and downlink of van elevators are generally achieved by mechanical traction, and the structure is relatively complex. Due to problems such as the use environment, cycle, equipment aging, and quality, it will cause the elevator car to fall without restraint or limited restraint, which is more serious. security issues...

AI Technical Summary

Problems solved by technology

[0003] The uplink and downlink of van elevators are generally achieved by mechanical traction, and the structure is relatively complex. Due to problems such as the use environment, cycle, equipment aging, and quality, it will cause the elevator car to fall without restraint or limited restraint, which is more serious. security issues

In the prior art, in order to solve the serious danger to the passengers caused by the car rigidly touching the bottom (directly falling to the bottom of the hoistway), a buffer device is installed at the bottom of the hoistway; the buffer device is hydraulic buffer for high-speed elevators, and generally adopts The structure of the buffer spring, and this consideration is mainly the relationship between the elastic coefficient of the spring, the stroke and the car. If the elastic force is too large, it will have a greater rebound force and cause greater damage. Therefore, high-speed elevators cannot A spring with a large elastic coefficient is used; in fact, for high-speed elevators, due to the faster speed and the effect of gravity, the buffering of the hydraulic buffer is relatively slow, and serious rigid collisions will still occur, resulting in accidents

[0004] Therefore, it is necessary to improve the existing elevator buffer structure, which is suitable for all van elevators. When the elevator accident bottoms out, it can ensure gentle and gradual compression buffering and return, and avoid excessive elastic coefficient of the buffer spring. Or the safety accident caused by the secondary rebound caused by the compression stroke being too long

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