Rotor iron core axial clamping assembly, rotor and motor

Abstract

The invention provides a rotor iron core axial clamping assembly, a rotor and a motor. The rotor iron core axial clamping assembly comprises two clamping elements arranged in pairs,wherein each clamping element comprises a circular sleeve and an abutting ring extending outwards from one end of the circular sleeve in the radial direction of the circular sleeve, each circular sleeve is used for sleeving and fixing a rotor shaft, and the two abutting rings are used for abutting against the end faces of the two axial ends of a rotor iron core respectively. During use, the circular sleeve of each clamping element sleeves and is fixed on the rotor shaft, so that the rotor core is clamped between the abutting rings of the two clamping elements, the two abutting rings are respectively pressed against and tightly pressed on the end surfaces of the two axial ends of the rotor core, an elastic force can be generated in the axial direction so as to ensure a simple and reliable clamping effect on the rotor iron core, and enough tolerance can be provided for size errors caused in the rotor production process and deformation and creep generated in the operation process in the axial direction of the rotor shaft.

Description

technical field [0001] The invention belongs to the technical field of electric drive equipment, and in particular relates to a rotor iron core axial clamping assembly, a rotor and a motor. Background technique [0002] The rotor of the motor includes a rotor shaft and a rotor core fixed on the rotor shaft. The rotor core is generally an iron core stack formed by lamination of steel sheets along the axial direction of the rotor shaft. At present, in the case of no axial compression of the iron core laminations, it is easy to loosen during the working process of the rotor. Therefore, it is usually necessary to configure additional bolts and nuts, and the bolts are sequentially passed through the iron core along the axial direction of the rotor shaft. The steel sheets of the core laminations are locked with nuts to provide axial compressive force to the core laminations. Since the bolts need to penetrate the rotor core (core laminations), not only the assembly is cumbersome, ...

AI Technical Summary

Problems solved by technology

Since the bolts need to penetrate the rotor core (core laminations), not only the assembly is cumbersome, time-consuming and labor-intensive, but also has a negative impact on the electromagnetic flow, and requires high dimensional accuracy of the parts, resulting in the compression and positioning of the core laminations. The consistency is difficult to guarantee, resulting in a large size deviation of the iron core stack, resulting in a large dynamic unbalance of the rotor

Images