Brake apparatus for elevator

Abstract

Provide is a brake apparatus for an elevator, in which an elastomer for acting is independent of an elastomer for braking, thus the reaction force generated in braking can be prevented from bring the unfavorable influence on other equipment. The brake apparatus for the elevator has brake arms arranged opposite to each other in pairs and rotating by means of the shaft, the elastomer for braking arranged between the brake arms, acting arms arranged opposite to each other in pairs at the inner side of the arms for braking, and rotating by means of the shaft, the elastomer for acting and an actuator arranged between the acting arms, and a brake unit having braking members in pairs and a recovery part, wherein the braking members are arranged at the ends of the brake arms and the acting arms, and move upwards when an elevator descends and downwards when the elevator ascends depending on the friction generated when the braking members are pressed on a guide rail, the recovery part restores the braking members to the neutrality position after braking.

Description

technical field [0001] The present invention relates to a braking device for an elevator, in particular to a braking device using an actuator when the lifting speed of the lifting body exceeds a specified value, or when the lifting body is running in an uncontrolled state. The braking device of the moving elevator. Background technique [0002] As a braking device of an elevator that uses an actuator to brake the lifting body, an actuator and a brake member are provided. The actuator has an operating force against the elastic force and is disconnected from the power supply under prescribed conditions. Corresponding to the disconnection of the power supply of the actuator, the braking member is in sliding contact with the guide rail under the action of elastic force to decelerate and stop the lifting body. Furthermore, a device using such an actuator is applied as a mechanism for braking the elevating body when the lifting speed of the elevating body exceeds a predetermined ...

AI Technical Summary

Problems solved by technology

[0006] But in above-mentioned prior art, owing to have adopted the structure that actuator is installed at one end of connecting rod, and brake member is installed at the other end, so on both sides of lifting body, when braking device brakes, brake The reaction force generated when the moving part is clamped between the guide rail and the clamping part forms a pressing force that presses the lifting body toward a direction away from the guide rail, and forms a pressing force that presses the guide rail toward a direction away from the lifting body, thereby It is not ideal because the lifting body will be twisted, or the installation position of the guide rail will be shifted, etc.

[0007] In addition, since the movable brake member is provided on only one side, there is a problem that it is necessary to ensure the flexibility of the brake elastic body in order to exert the required braking force, resulting in a problem of increasing the size of the device.

In addition, it is also conceivable to use a braking elastic body with a high spring constant, so that the necessary braking force can be ensured even when the amount of deflection is small. It will have a great influence on the braking force, so it is necessary to strictly manage the size of each part

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