Reduction damping device for elevator

Abstract

The invention discloses a reduction damping device for an elevator. The reduction damping device comprises a cylinder body, a damping piston and a piston rod, wherein the piston rod is fixedly connected with the damping piston; the piston rod is connected with a buffering component in the stroke that the buffering component of the elevator is compressed by the cage of the elevator and springs back; the buffer buffering component is subjected to reduction damping through the damping piston. Due to adoption of an elevator buffering structure and a reduction damping component which has the function of limiting the resilience speed when the reduction damping component is connected before the buffering to the cage contacting the bottom is finished, the buffering stroke and the elasticity coefficient of the buffering component are greatly increased, relatively gentle buffering can be achieved, rapid resilience can be avoided because of the reduction damping after the buffering, and a final buffering effect is ensured; security accidents caused by secondary resilience caused by too large elasticity coefficient or too long compression stroke of the buffering spring 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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