Normally closed type pneumatic clutch for sanitation vehicle

Abstract

The invention relates to a normally closed type pneumatic clutch for a sanitation vehicle. The normally closed type pneumatic clutch for the sanitation vehicle comprises a first rotor, a second rotor,a clutch mechanism and a drive mechanism, wherein the clutch mechanism is provided with a first gear piece arranged on the first rotor and capable of rotating along with the first rotor, and a secondgear piece arranged on the second rotor and capable of rotating along with the second rotor; the first gear piece can move along the axial direction to mesh or be separated from the second gear pieceso as to switch the motion states of the first rotor and the second rotor; the drive mechanism comprises an air cylinder assembly with a shell and a piston piece, and an elastic assembly; the pistonpiece is stressed with an air pressure thrust force so as to drive the first gear piece to be separated from the second gear piece along the axial direction, so that the first gear piece and the second gear piece are switched into a separation state from a meshing state; and the elastic assembly is supported on the first gear piece, so that the first gear piece and the second gear piece are switched into the meshing state from the separation state.

Description

technical field [0001] The invention belongs to the technical field of clutches for sanitation vehicles, in particular to a normally closed pneumatic clutch for sanitation vehicles. Background technique [0002] The pneumatic clutch is connected by air pressure and released by the return spring. Specifically, it has a first gear part and a second gear part. When ventilating, the two gear parts move axially inside to engage and connect, and when the pressure is released, they are automatically separated by the return spring. [0003] The patent document with the application number 201920591600.8 proposes a normally closed pneumatic clutch in which the two gear parts are in the disengaged state when the normal state is in the meshing state to transmit torque, and the inflated state. In order to ensure the stability of the torque transmission of the internal gear and the service life of the internal gear, the internal gear and the connecting end sleeved on the power output sha...

AI Technical Summary

Problems solved by technology

Therefore, when the internal gear of the normally closed pneumatic clutch proposed in this patent is processed, the guide slope of the gear teeth on the internal gear faces the connection end that is socketed with the power output shaft, which makes it impossible to use numerical control equipment for high Precision CNC or NC operations can only be done manually to polish the guide slope

The guide slopes of each gear tooth produced by manual grinding are of different sizes and precision, resulting in stagnation during meshing, and the efficiency of manual grinding is low, and the cost of manual processing is high

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