An emergency braking device used for an elevator and an elevator

An emergency braking and elevator technology, applied in the field of elevators, can solve the problems of increasing the number of parts and structure, and achieve the effect of approximately uniform distribution of pressing force and stable braking force
CN103224176AInactive Publication Date: 2013-07-31HITACHI LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI LTD
Publication Date
2013-07-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

In order to maintain uniform pressing force of a brake shoe, multiple plate springs are superposed in the up and down direction. The pressing force applied to the brake shoe is maintained uniform by adjusting the pressing force of each plate spring with adjusting plates and adjusting screws. Because multiple plate springs and adjusting plates and adjusting screws which correspond to the plate springs, problems of complex structure and increased amount of components are provided. The invention provides an emergency braking device used for an elevator and an elevator. The brake shoe is configured in manner in which a contact plate is mounted on the back surface part of the brake shoe, wherein the back surface part is opposite to a guiding member. A pressure adjusting plate is detachably disposed between the back surface part and the contact plate. Therefore, the pressing force borne by brake shoe from the guiding member can be adjusted. The pressure adjusting plate is disposed between brake shoe and the contact plate, and the displacement of the elastic body of the part equipped with the press adjusting plate of the contact plate is adjusted. therefore, the pressing force distribution of the brake shoe in the up and down direction can be adjusted.
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Description

technical field

[0001] The present invention relates to an elevator that uses the elevator car to transport passengers and goods between the upper and lower floors of a building, and more particularly relates to an elevator car that performs emergency braking when the elevator car descends at a speed exceeding a specified speed. An emergency braking device for a moving elevator and an elevator with the emergency braking device for an elevator. Background technique

[0002] In a general elevator, as a safety device, an emergency braking device is installed on the elevator car. The car stops at a specified deceleration.

[0003] In an emergency when the elevator car reaches a predetermined descending speed, the brake shoe provided with at least a pair of trapezoidal friction materials is clamped by the elastic body on the guide rail arranged on the wall of the elevator passage for the elevator car to ascend and descend, Using the wedge effect of the brake shoe, the friction ...

Claims

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