Self-centering clutch

Abstract

A self centering clutch. It mainly solves the technical problems that the existing friction clutches are difficult to adapt to large radial displacement and deflection angle displacement, and the axis lines of the two half clutches are difficult to align during installation. The main points of its technical scheme are: it is composed of a left half friction disc fitted on the driven shaft and a right half friction disc fitted on the driving shaft in a movable fit, and at the same time, the outer peripheral walls of the driven shaft and the driving shaft are axially opened. There are 3 to 12 arc-shaped driven shaft ball grooves and driving shaft ball grooves, and balls are respectively installed between the driven shaft ball grooves or driving shaft ball grooves and the inner wall of the clutch hub of the left half friction disc or the right half friction disc, Part of the balls fits in the driven shaft ball groove or the driving shaft ball groove. It can be adapted to clutches with high requirements for centering and installation accuracy. It transmits large power, and the left and right friction discs can be automatically centered. It is easy to install and has an automatic overload protection function. It can be widely used in the field of mechanical transmission. .

Description

technical field [0001] The invention relates to a clutch device in the field of mechanical transmission, in particular to a friction clutch. Background technique [0002] At present, the existing friction clutches either have small transmission power, short service life, high operating costs, or small radial and angular displacements, making installation and alignment difficult. For example, the invention patent "heavy-duty friction clutch" (patent number: ZL200410022887.0, authorization announcement number: CN1263964C) applied by the applicant on February 13, 2004 was improved to solve technical problems such as limited transmission torque. Its equivalent friction coefficient is more than 10-30 times that of the general friction clutch, so it is a relatively ideal friction clutch due to its small size, large transmission torque, small impact and vibration, simple structure, good manufacturability and low cost. , which is very popular among users. It is mainly composed of ...

AI Technical Summary

Problems solved by technology

However, in the actual operation of this heavy-duty friction clutch, there are some deficiencies from structural analysis: since the ball 12 is installed in the transverse semicircular ball groove 11 on the shaft where the left half coupling is located, the ball 12 and the semicircle The contact of the spherical ball groove 11 is a high pair, and relative motion will be generated when the joint is separated. Therefore, the axial semicircular ball groove 11 on the driven shaft 13 is easily damaged due to large contact stress and wear; The half-friction disc 10 is fitted fixedly on the driving shaft 19, and only the left half-friction disc 7 is movably fitted on the driven shaft 13 to produce a certain displacement relative to the radial direction, so that the original invention has higher requirements for neutrality , the installation accuracy is relatively high

Especially when it is used in the case of large radial displacement and angular displacement performance requirements, it is difficult to meet its requirements

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