Space wedge friction coupling and safety clutch

Abstract

A spatial-wedging friction safety clutch has a spatial wedge mechanism. The torque is transmitted from a rotary guide mechanism G to a draft friction mechanism F1, the draft friction mechanism F1 comprises a friction part and a medium part, the rotary guide mechanism G comprises a guide part and the medium part, wherein the friction part is provided with a rotary friction surface, the guide part is provided with a spiral toothed guide surface preferably. Particularly, the lead angle of the guide surface is controlled in a range between the minimum value and the maximum value and is capable of guaranteeing that the a guide friction pair between the guide surfaces is subjected to self-locking so that the guide part can be wedged with the guide part and the friction part to transmit the torque, and further, overload protection can be realized by automatic sliding rotation of a rotary friction pair of the draft friction mechanism F1 when in overload. The spatial-wedging friction safety clutch is designed according to the new technical principle, free of any arrangement and regulation in the whole life cycle, simple in structure and high in universality, and has no relation with service environments and states, such as temperature and the like. As each specific overload action occurs at the moment when the power torque of a primer motor is maximum, error action is eliminated.

Description

[0001] related application [0002] The present invention is a subordinate patent application of the Chinese patent applications 201010222712.X and 201020186785.3 named space wedging friction overrunning clutch proposed by the present applicant. The entire contents of the published prior two patent applications are hereby incorporated by reference. technical field [0003] The present invention relates to a shaft coupling and a safety clutch in all transmission fields, as well as a coupling, a soft start device, a friction clutch device, a friction clamping device, and clamping devices for various tools with the safety clutch , braking and parking brake devices, stepless positioning hinges / hinges / pivots, screw presses, etc., especially a friction safety clutch with the function of limiting the upper limit of torque. Background technique [0004] Whether it is breaking / shearing pin, fitting, friction, or hydraulic, the overload torque values ​​of all safety clutches / coupling...

AI Technical Summary

Problems solved by technology

Therefore, the resulting disadvantages are: firstly, the existing technology cannot make every specific overload protection action of the safety clutch configured on any specific transmission part appear again and again at the power torque of the upstream prime mover. When it reaches the maximum, it happens every time correspondingly at the moment when the load torque of the clutch just has a tendency to exceed the input torque of the clutch

It is not universal, even within e.g. certain torque or geometry ranges / sizes

Moreover, it is often necessary to reset due to changes in work requirements, or due to overload actions (such as hydraulic pressure)

Not only the workload is heavy, it is not easy to ensure the setting effect, but also increases the cost of use, especially for the situation where additional auxiliary equipment must be added (such as the hydraulic pump in the hydraulic safety coupling)

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