Safety Elevator System with Composite Damping Force

Abstract

The invention discloses a damping force compounding safe elevator system. The damping force compounding safe elevator system comprises an elevator car body and a buffering assembly, wherein the buffering assembly comprises a buffering component and a magneto-rheological damping component which can be connected with the buffering component in forward and backward directions. At an abnormal falling buffering post-period of the elevator car body, variable forward damping intervention is combined with pre-period elastic buffering, and is suitable for a high-speed elevator to use; the damping force compounding safe elevator system has a random dynamic application effect so that the instant comfort and reliability can be effectively improved before the elevator car body touches the bottom and is in contact with the buffering component; meanwhile, before the elevator car touches the bottom and the buffering is finished, the connection of the buffering component is restored so as to realize the effect of limiting a resilience speed, and the gentle resilience is guaranteed; parameters of magneto-rheological liquid are adjusted according to the falling-down parameters of the elevator car body; if the falling-down speed is great, the greater resilience force is caused and the electrification current of the magneto-rheological liquid is increased and thickened so that the damping force is restored; meanwhile, the viscosity of the magneto-rheological liquid also can be adjusted in a damping restoring process and the resilience is relieved.

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 a 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 high 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; at the same time, For elevators with high speed and heavy load, the use of springs with large elastic coefficients will make the spring load too large, and it does not have the characteristics of adjusting at any time, and it cannot adapt to the whereabouts of the elevator car body, so it cannot Buffer in case of falling

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