A mechanical buffer unlocking mechanism for elevator rapid fall

Abstract

An elevator fast falling mechanical type buffering and unlocking mechanism comprising a buffer bottom plate installed at the bottom of an elevator car. The buffer bottom plate and the bottom face of the car are separated through a buffer spring. A limiting part is arranged at the side edge of the car and is used for preventing the buffer bottom plate from moving upwards. A locking rod is further arranged in the position, located below the buffer bottom plate, of the side edge of the car and is used for preventing the buffer bottom plate from moving downwards. The locking rod is limited by an inertia unlocking device installed on the outer side of the car and comprises a rod part and a head part which are connected integrally. The rod part is inserted in from the outside of the side face ofthe car. An unlocking spring is installed between the head part and the outer wall of the car. The outer side of the head part is limited by the inertia unlocking device. The inertia unlocking devicecomprises an installing sleeve, an inertia block and an action rod. The inertia block is in clearance fit with the installing sleeve and is installed in the installing sleeve. The action rod is connected to the lower portion of the inertia block, and the lower end stretches out of the installing sleeve.

Description

technical field [0001] The invention relates to the field of elevator safety devices, and more specifically relates to a mechanical buffer unlocking mechanism for elevator rapid fall. Background technique [0002] With the rapid development of economy and society and the increase of urban population density, high-rise buildings also increase rapidly, making the safety of elevators in high-rise buildings more and more concerned by all parties. In recent years, accidents of casualties caused by uncontrolled falls of elevators have occurred frequently, which has cast a considerable shadow on the public's psychology. [0003] The elevators installed in the current high-rise buildings, once the situation of stalling and falling or overspeeding to the top, there is no deceleration device in the process of falling or rushing to the top. A large amount of kinetic energy will be generated in an instant, and it is difficult to fully buffer and release the kinetic potential energy thr...

AI Technical Summary

Problems solved by technology

[0003] The elevators installed in the current high-rise buildings, once the situation of stalling and falling or overspeeding to the top, there is no deceleration device in the process of falling or rushing to the top. A large amount of kinetic energy will be generated in an instant, and it is difficult to fully buffer and release the kinetic potential energy through the buffer device at the bottom of the pit, which is an important reason for the eventual loss of personnel and property

[0004] Therefore, more and more elevator manufacturers install buffer devices at the bottom of the elevator car to reduce the damage to passengers caused by the elevator's falling; however, the existing buffer devices are mostly controlled by electronic components, and the humid environment in the hoistway is more likely to cause electronic damage. Components are damaged; therefore, it is urgent to design a mechanical buffer unlocking mechanism for elevator rapid fall

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