New speed governor with uniform load and vibration reduction protection function and its working method

Abstract

The invention discloses a novel overspeed governor with the functions of uniform loading and vibration reduction protection and its working method, comprising a separation rod, a separation shaft sleeve, a speed governor housing, a first support ring, a second support ring, and a diaphragm The spring, the second supporting ring retaining ring, the fixed shaft, the torsion spring and the brake disc, the electromagnet is connected to the separation rod, the electromagnet is fixed on the truss through the base, the torsion spring is set on the fixed shaft, and the brake disc is set on the torsion On the sprung, there is a keyway on the fixed shaft, and the second support ring retaining ring, the second support ring, the diaphragm spring, the first support ring, the speed limiter housing, and the separation shaft sleeve are all placed on the fixed shaft in sequence. The separation shaft sleeve is connected with the fixed shaft by a sliding key to ensure that the separation shaft sleeve can reciprocate along the axial direction of the fixed shaft under the promotion of the separation rod. The invention can make the pressure distribution uniform when the brake disc and the friction disc are in contact with each other to limit the speed, so that the load can be evenly loaded, and the vibration caused by the brake disc can be absorbed by adding a torsion spring on the connecting section between the fixed shaft and the brake disc to protect the brake disc. fixed shaft and the whole device.

Description

technical field [0001] The invention relates to parts of a mechanical device, in particular to a new speed governor with the functions of uniform loading and vibration reduction protection and its working method. Background technique [0002] In mechanical devices, rotating parts are a very common part. During the high-speed or medium-speed movement of rotating parts, in order to prevent them from exceeding the specified safe speed, one or more speed limiters need to be installed to limit the speed to ensure safety. Such as: the speed limit of the sprocket of the escalator or moving walk, the traction wheel of the elevator, etc. [0003] The working principles of the existing speed limiting device (speed governor) mainly include the following types: [0004] 1. The emergency braking of the rotating parts during overspeed is realized through the ratchet and pawl mechanism. Such as: invention patents CN106516959B (double-stage additional braking device for escalators), CN10...

AI Technical Summary

Problems solved by technology

This mechanism is prone to speed limit instability caused by spring failure during friction speed limit, and the speed limit mechanism is easily damaged; and only the friction speed limit of the friction plate is used, and the vibration reduction protection of the speed limit device cannot be achieved.

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