A damping coupling

Abstract

The invention discloses a vibration absorbing coupling. The vibration absorbing coupling comprises an input flange and an output flange and is characterized in that the vibration absorbing coupling further comprises a vibration absorbing mechanism which comprises a switching connection plate, sliding blocks, vibration absorbing rollers, large bevel gears and small bevel gears; n sliding grooves are distributed in the side face, connected with the input flange, of the switching connection plate circumferentially and evenly; sliding blocks are arranged in the sliding grooves and move along the sliding grooves correspondingly; the front face of each sliding block is provided with a semicircular rolling groove; the back face of each sliding block is provided with thread teeth; the vibration absorbing rollers are arranged in the rolling grooves correspondingly; the large bevel gear are installed in the switching connection plate, and the large bevel gears and the switching connection plate are coaxial; the back face of each large bevel gear is provided with conical teeth; the front face of each large bevel gear is provided with a thread matched with the thread teeth in the corresponding sliding block; the small bevel gears are installed in the switching connection plate and distributed evenly in the circumferential direction of the switching connection plate; and the small bevel gears mesh with the large bevel gears. According to the vibration absorbing coupling, the natural frequency of the vibration absorbing mechanism can be changed by adjusting the radial movement distance of the sliding blocks, so that torsional vibration of a transmission system at different rotation speed is reduced, and stable operation of a motor and the transmission system is ensured.

Description

technical field [0001] The invention relates to a shaft coupling, in particular to a vibration-damping coupling. Background technique [0002] A coupling is a mechanical part used to connect two shafts (input shaft and output shaft) in different mechanisms so that they rotate together to transmit torque. In the high-speed and heavy-duty power transmission, due to the instability of the drive torque of the power machine and the load torque of the working machine, and the constant change of the speed of the transmission system, the transmission system produces mechanical vibrations under variable speed and variable load conditions. It will cause additional dynamic stress to the shafting parts, affect the stability of the transmission system and reduce the service life of the parts, and in serious cases will directly lead to the failure of the parts. [0003] At present, under the working condition of the transmission system with large changes in load and speed, flexible coupl...

AI Technical Summary

Problems solved by technology

However, the dynamic characteristic parameters of the elastic coupling are related to the hardness, elasticity and damping properties of the elastic element itself. The parameters are mutually restricted and the relationship is complicated. It is difficult to obtain the dynamic characteristic parameters, and the vibration reduction effect is restricted by many factors. Cannot accurately dampen vibrations for frequency-specific external stimuli

At the same time, compared with the rigid coupling, due to the action of dynamic load, there is a rotation angle and speed deviation between the input shaft and the output shaft of the elastic coupling, which cannot meet the requirements of high-precision transmission

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