Rigid coupling with long service life

Abstract

The invention discloses a rigid coupling with long service life and belongs to the field of mechanical transmission. A fixed shaft barrel pair correspondingly arranged on the outward sides of half couplings are fixed by corresponding connecting pieces, buffer devices are arranged between the two half couplings, and when one half coupling is driven by the fixed connecting piece to rotate, a shaft rod connected with one coupling can be driven to rotate around the center of the half coupling, and then a piston rod is pushed to move relative to a hydraulic barrel, so that a piston moves in the hydraulic barrel; and due to the fact that the movement of the piston is hindered by reverse elastic force of springs and viscous force of hydraulic oil in the hydraulic barrel at the same time, instantaneous large loads are buffered and absorbed, so that loads borne by the other half coupling and the connecting piece connected with the half coupling are lowered, and the overload protection effect isachieved. Compared with a traditional manner of connection with a single key, by adopting the rigid coupling with long service life, an instantaneous torque can be elastically buffered and absorbed;and all components in the device do not rigidly collide with each other, so that the service life of the whole device is prolonged.

Description

technical field [0001] The invention belongs to the field of mechanical transmission, and in particular relates to a rigid shaft coupling with high service life. Background technique [0002] Rigid couplings are used to transmit large torques while preventing the connected parts from bearing excessive loads, and play the role of overload protection. They are generally used in shaft transmissions with stable loads, high speeds, or high transmission accuracy requirements; the most representative of them The most famous is the flange coupling, also known as the flange coupling, which uses bolts to connect two flange flange half couplings, and the two half couplings are respectively connected to the two shafts with keys to realize the two shafts. , to transmit torque and motion. Among them, the key bears most of the load, and the mutual extrusion and collision between the key and the keyway for a long time will easily cause a gap between the two, thereby reducing the service li...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a rigid coupling with high service life in view of the problem that the current rigid coupling has a short service life due to the heavy load on the key and is easy to be damaged.

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