Deceleration buffer magnetic shield rotating shaft

Abstract

The invention relates to a deceleration buffer magnetic shield rotating shaft which comprises a rotating shaft body arranged at the axis position of a rotor, narrow iron plates, wide iron plates, a casing and a buffer seat, wherein the narrow iron plates and the wide iron plates are uniformly distributed on the surface of the rotating shaft body in the axial direction of the rotating shaft body at equal intervals; a magnetic shield bushing and a fixing sleeve are arranged between every two adjacent iron plates; a wind flowing plate is arranged on the outer side of each fixing sleeve; a key groove is formed in the tail end of each wide iron plate; a through hole and a through groove are respectively formed in the side face of each iron plate; a bump is arranged on the rotating shaft body; the casing is arranged on the outer side of the bump; the buffer seat is arranged at an inlet of the casing; symmetrical springs are arranged between an elastic sleeve between the buffer seat and the bump and the buffer seat; a friction piece is arranged on the elastic sleeve; a buffer tube is arranged in the buffer seat. A motor rotating shaft disclosed by the invention has the advantages of reduced integral weight, low energy consumption, good heat radiating performance and low work load; the rotating shaft is not easy to damage, so the maintenance cost is low and the service life is long.

Description

technical field [0001] The invention relates to a motor rotating shaft, in particular to a decelerating and buffering magnetically isolated rotating shaft. Background technique [0002] The existing motor shaft is generally composed of the shaft and the rotor core fixed on it. Because the entire rotor is a solid core structure, the mass of the rotor is large. During the rotation of the rotor, the axial stress changes greatly. At the same time, there are motor rotor The cooling effect is not good. At present, there are also motor shafts composed of shaft and spoke iron plates on the market, thereby reducing the weight of the rotor, but the stress on the cross-section of the motor shaft with this structure is large, which is easy to cause the shaft to break. At the same time, this type of motor has poor ventilation performance. , so it cannot be well applied. Moreover, the magnetic field of the rotor core yoke will enter the motor shaft during the operation of the motor, whi...

AI Technical Summary

Problems solved by technology

[0002] The existing motor shaft is generally composed of the shaft and the rotor core fixed on it. Because the entire rotor is a solid core structure, the mass of the rotor is large. During the rotation of the rotor, the axial stress changes greatly. At the same time, there are motor rotor The cooling effect is not good

At present, there are also motor shafts composed of shaft and spoke iron plates on the market, thereby reducing the weight of the rotor, but the stress on the cross-section of the motor shaft with this structure is large, which is easy to cause the shaft to break. At the same time, this type of motor has poor ventilation performance. , so it cannot be well applied

Moreover, the magnetic field of the rotor core yoke will enter the motor shaft during the operation of the motor, which will cause large eddy current loss and shaft current inside the motor shaft, which will not only increase the loss of the motor, but also the shaft current will damage the bearing and cause the motor to appear. Quality problems, greatly reducing the life of the motor

[0003] At the same time, because the rotating shaft is under great stress during the working process, the rotating shaft controls one end of the rotating shaft, and then controls the other end of the rotating shaft to control the work of the machine. Therefore, the performance requirements of the rotating shaft are getting higher and higher, and the manufacturing cost of the rotating shaft is also getting higher and higher. In order to reduce the stress of the rotating shaft during the working process and improve the service life of the rotating shaft, the existing rotating shaft structure must be improved. , to reduce the workload of the shaft

Images