Speed limiter

Abstract

The invention provides a speed limiter which comprises a moving shaft, a larger cylindrical gear, a small cylindrical gear, a large bevel gear, a small bevel gear, a spoke, sliding blocks and friction plates, wherein the large cylindrical gear is arranged on the moving shaft, the small cylindrical gear is engaged with the large cylindrical gear, the large bevel gear is arranged at the other end of a small cylindrical gear shaft, the small bevel gear is engaged with the large bevel gear, the spoke is arranged at the other end of a small bevel gear shaft, the sliding blocks are arranged on the spoke, and the friction plates are arranged at positions corresponding to the end parts of the sliding blocks; circular motion of the moving shaft can be transferred to the spoke, and the sliding blocks are in contact with the friction plates at the positions corresponding to the end parts under the action of centrifugal force to generate friction force; a speed required to be limited is set by setting the transmission ratio of the gears; and when the speed is reached, the friction force reaches a critical value and can be reversely acted on the moving shaft to limit the speed. With the adoption of the speed limiter, the speed can be automatically limited under the condition of no need of external braking force, and the speed limiter has effects of energy saving and environmental friendliness.

Description

Technical field [0001] The invention relates to a speed limiter. Background technique [0002] In many cases, it is necessary to limit the speed of objects in motion. Current speed-limiting devices generally achieve the speed-limiting function by applying an external force opposite to the direction of motion, which is not only complex in structure, but also consumes a certain amount of energy due to a power source. Summary of the invention [0003] The purpose of the present invention is to provide a speed limiter with a simple structure and capable of automatically limiting speed. [0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: including a moving shaft, a large cylindrical gear, a small cylindrical gear, a large bevel gear, a small bevel gear, a spoke, a slider and a friction plate, wherein the large cylindrical gear is installed on the moving shaft On the upper side, the small cylindrical gear meshes with the ...

AI Technical Summary

Problems solved by technology

The current speed limiting device generally achieves the speed limiting function by applying an external force opposite to the direction of motion, which not only has a complex structure but also consumes a certain amount of energy because of the need for a power source.

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