Clutch type elevator speed limiter

Abstract

The invention discloses a clutch type elevator speed governor which comprises a rope sheave (2). Two ends of the rotary shaft (13) of the rope sheave (2) are respectively fixed on a left support plate (1) and a right support plate (7). A compression plate (6) which rotates independently is further arranged on the rotary shaft (13). One side, close to the rope sheave (2), of the compression plate (6) is provided with a friction plate (5). One side, close to the right support plate (7), of the compression plate (6) is provided with a circle of evenly-distributed oblique teeth. The right support plate (7) is provided with oblique teeth meshed with the oblique teeth of the compression plate (6). A ratchet (11) which extends into the inner side of the rope sheave (2) is further fixed on the one side, close to the rope sheave (2), of the compression plate (6). A hook component (4) is further arranged on the inner side of the rope sheave (2) and connected with the rope sheave (2) through a rotary pin (3). The hook component (4) is located on the outer side of the ratchet (11). The clutch type elevator speed governor has the advantages that brake torque can be increased, and the compact structure of the speed governor facilitates mounting.

Description

Technical field [0001] The invention relates to an elevator speed limiter, in particular to a clutch type elevator speed limiter. Background technique [0002] The elevator speed limiter is one of the safety control components in the elevator safety protection system. When the elevator is running for any reason, the car overspeeds, or even the danger of falling, and all other safety protection devices do not work, the speed limiter and safety gear will be linked to stop the elevator car. live. [0003] At present, most of the existing elevator speed limiters have the structure disclosed in Chinese patent application 200580039944.9. Usually, when the speed of the rope wheel is too fast, the brake shoe is pulled through the pull rod to brake. This braking method is to perform local friction braking to the periphery of the sheave, so it has the defect of small braking force, which is difficult to apply to some high-power elevators. When it needs to be used in high-power elevators, ...

AI Technical Summary

Problems solved by technology

This braking method is to perform partial frictional braking to the periphery of the sheave, so it has the disadvantage of small braking force, which is difficult to apply to some high-power elevators

When it needs to be used in high-power elevators, it is generally necessary to increase the number of brake shoes to achieve sufficient braking force, which will increase the complexity of the structure and increase the production cost. Moreover, the overall structure is relatively loose and the volume is large. Easy to install

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