Heavy-duty overrunning clutch

Abstract

The invention discloses a heavy-duty overrunning clutch, which comprises an outer ring, an inner ring, a plurality of rollers and a retaining frame. The retaining frame comprises a support ring I, a support ring II and a plurality of support columns corresponding to the rollers. Spring plates are fixedly arranged on the support columns along the axial direction and are used for applying pre-tightening force on the rollers along the engagement direction of an engagement slot. The direct processing of a limit seat on the outer ring can be avoided, the working efficiency can be increased, the processing cost can be reduced, the service life can be prolonged, and the transmission effect can be guaranteed. Moreover, relevant components can be replaced easily after being damaged, the outer ringneeds not to be rejected as a whole, and the cost of maintenance and use can be reduced. The axial length of the overrunning clutch and the rollers can be increased theoretically indefinitely, the engagement length can be increased, and thus the bearing capacity of the overrunning clutch can be improved. Meanwhile, the pre-tightening force can be applied at multiple points of the rollers according to needs, and the limiting balance for the rollers can be guaranteed while the axial length is ensured, so that the rollers cannot deviate from the axial line of the inner ring. Therefore, the stable operation of the overrunning clutch can be ensured, and mechanical failure can be avoided.

Description

technical field [0001] The invention relates to a clutch device for motor vehicles and mechanical transmission, in particular to an overrunning clutch. Background technique [0002] The overrunning clutch is a basic component that appears with the development of power products. It is an important component used for power transmission and separation between the prime mover and the working machine or between the driving shaft and the driven shaft inside the machine. It is mainly a device with a self-clutching function by utilizing the speed change of the main and driven parts or the transformation of the rotation direction. In practice, most of them are clutches that use the meshing of teeth, the meshing of ratchets and pawls, or the wedging action of rollers and wedges to transmit motion or torque in one direction. [0003] Roller overrunning clutches are widely used in higher speed occasions due to their uniform and stable transmission and large load-carrying capacity, and ...

AI Technical Summary

Problems solved by technology

The limit seat of the overrunning clutch is generally formed in one piece on the outer ring or the inner ring, and the processing process is relatively complicated, which not only reduces the work efficiency, but also makes the processing cost higher

Therefore, in order to facilitate processing and ensure processing accuracy, the inner star wheel type is widely used, but for the structure of the outer ring as an active transmission, it is not conducive to adapt to the transmission law of the overrunning clutch, resulting in shortened service life or affecting the transmission effect; at the same time, Due to the strong integrity, if the parts are damaged, the overrunning clutch will be scrapped as a whole, and the cost of use will be wasted.

[0004] As for the overrunning clutch of the outer planetary wheel, since the limit seat is processed on the inner circle of the outer star wheel, the engaging body (roller) is limited by the space position of the body, and the number of installations is small, which reduces the carrying capacity of the overrunning clutch; more materials are used, The machining allowance is large, so the cutting edge of the tool is increased and the length is increased. At the same time, the power and volume of the machine tool are required to be large, resulting in low processing efficiency; the installation is complicated and the cost is high; for applications that require heavy loads, only increase its radial direction The size of the transmission equipment is relatively large, which cannot meet the needs of modern mechanical equipment

Another thing is that the elastic element acts on the roller and restricts its reverse engagement in the circumferential direction. It acts on a point or part of the roller, which cannot achieve balance, making the roller easy to deflect, resulting in jamming or poor movement. , resulting in mechanical failure

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