Universal coupling

Abstract

The invention relates to a coupling, in particular to a universal coupling. The universal coupling comprises a first half coupling and a second half coupling, and is characterized in that a first claw disc, a first elastic body, a second claw disc, a transmission shaft, a third claw disc, a second elastic body and a fourth claw disc are further arranged between the first half coupling and the second half coupling; the first half coupling is fixedly connected with the first claw disc; claw type teeth of the first claw disc are meshed with claw type teeth of the second claw disc; the first elastic body is located in the gap between the first claw disc and the second claw disc; the edge of the end face of the second claw disc extends out of a first shell; eight arc-shaped grooves are formed in the inner side of the first shell; the outer side of the end, close to the first shell, of the transmission shaft is provided with eight ball sockets corresponding to the arc-shaped grooves; balls are arranged in the arc-shaped grooves and the ball sockets; a limiting block is arranged on at least one side of each ball; relay coupling is conducted in the manner of elastic coupling, ball type coupling, ball type coupling and elastic coupling, and impact and angle compensation to which couplings of a single type cannot adapt can be achieved.

Description

technical field [0001] The invention relates to a shaft coupling, in particular to a universal joint. Background technique [0002] Some products in the prior art realize the universal function through balls. When the input and output shafts have a positional deviation, the axial position of the transmission shaft will rotate slightly, driving the steel balls to do a small amount in the slideways of the left shell and the right shell. Rolling, so that the universal function of the coupling is realized by the micro-rolling of the steel ball. [0003] For example, a Chinese patent discloses a diaphragm coupling, application number: 201410467620.6, application date: 2014-09-15, the main content is: add one at each end of the middle section of the left elastic diaphragm and the right elastic diaphragm Steel ball universal mechanism device; the steel ball universal mechanism is composed of a casing, steel balls and a transmission shaft. The outer circles at both ends of the tran...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned technical solution has shortcomings: 1) There are 6 ball sockets on the outer circle of the transmission shaft, and its precision is much lower than the 8-ball structure adopted by the mainstream ball coupling; 2) The universal function of the coupling is realized by the slight rolling of steel balls Its angle of compensation is very limited and lacks cushioning

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