Over running clutch

Abstract

The invention relates to a sprag clutch, in particular to a sprag clutch with an intermediate member which is a roller pin. The sprag clutch comprises a holding shelf, a plurality of roller pins and aplurality of spring pieces. A first annular end and a second annular end arranged on two ends of a window hole of the holding shelf are respectively provided with a triangular projection which is used for positioning the spring pieces. Two ends of a beam of the holding shelf are provided with spring positioning spigots. Two side surfaces of the beam are provided with spring piece positioning tapered surfaces at the connection ends with the inner surface of the beam. Each spring piece consists of a supporting part and a clamping part which are connected and integrated. The supporting part is asupporting plate with two inwardly bended ends. The ends of the two folded sides of the supporting are inwardly bended. The roller pins are supported to be suspended at the bended corners of the endsof the folded sides. The clamping part is two clamping plates. The upper end of the clamping plate is connected with the upper end of the straight side of the supporting plate, while the lower end ofthe clamping plate is inwardly bended. The clamping plates of the spring pieces are clamped at the positions of the spring piece positioning spigot of the beam. The sprag clutch solves the problems of the prior sprag clutches that the spring loading capacity is not ideal and a spring has incipient faults of displacement and dropping during the high rotational speed period.

Description

technical field [0001] The invention relates to an overrunning clutch, in particular to an overrunning clutch whose middle part is a needle roller. Background technique [0002] The overrunning clutch is a clutch that can be automatically engaged or disengaged by the change of the relative motion speed of the main and driven parts or the change of the direction of rotation; it is the basic element in the mechanical transmission of electromechanical integration, and its main function is to prevent reverse rotation, precise positioning, transmission Torque, or cut-off torque, so it is also called backstop or one-way bearing, which is widely used in machine tools, packaging machinery, printing machinery, light industrial machinery, textile machinery, petrochemical machinery, cement machinery, metallurgical machinery, transportation machinery , reducer, etc. There are many types of overrunning clutches, commonly used are pawl type overrunning clutches, needle roller overrunning...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to solve the technical problem that the spring load capacity of the existing overrunning clutch is not ideal and the spring has the hidden danger of displacement and falling off at high speed

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