Two-way safety gear for elevator and elevator device thereof

Abstract

The invention discloses a bidirectional safety tongs used in elevators. The bidirectional safety tongs comprises a first safety tong, a second safety tong which is of the same structure with the first safety tong and is arranged in opposite direction, and a connecting device which is used for connecting the first safety tong and the second safety tong. The first safety tong is arranged above the second safety tong, wherein both the first safety tong and the second safety tong comprises shells, male sliding blocks fixed inside the shells, female sliding blocks arranged inside the shells and a transfer bar. The number of the female sliding blocks is two, and the two female sliding blocks are arranged on two sides of the shells and are fixedly connected with the shells, and the connecting device is connected with the female sliding blocks of both the first safety tong and the second safety tong. The bidirectional safety tongs used in elevators can avoid the occurrence of a horizontal impact force generating under emergency braking in the elevators as well as overspeed of elevators while the elevators go up.

Description

technical field [0001] The invention relates to the technical field of elevator manufacturing, in particular to a two-way safety gear for an elevator and an elevator device thereof. Background technique [0002] Elevator safety gear is a safety device that stops the car in an emergency and clamps it on the guide rail when the elevator has a very serious fault such as overspeed or broken rope under the control of the speed limiter. It provides a guarantee for the safe operation of the elevator. Effective protection. [0003] At present, the existing elevator safety gears all use unilateral sliders for braking, and can only perform one-way braking. Upward impact force, emergency braking of the safety gear, because the safety gear is a unilateral slider braking, the side of the guide rail phase is shifted rapidly, and the car is shifted to one side following the guide rail, so people will be subject to rapid lateral impact On the other hand, if the elevator travels upwards at...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing elevator safety gears all use unilateral sliders for braking, and can only perform one-way braking. Upward impact force, emergency braking of the safety gear, because the safety gear is a unilateral slider braking, the side of the guide rail phase is shifted rapidly, and the car is shifted to one side following the guide rail, so people will be subjected to rapid lateral impact On the other hand, if the elevator travels upwards at an overspeed, it cannot be braked. Therefore, it is necessary to propose a new type of elevator two-way safety gear and its elevator device to solve the above problems

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