A magnetic coupler

Abstract

The invention relates to a magnetic coupler, which includes a conductor rotor disk and a permanent magnet rotor disk. The conductor rotor disk includes a driving side conductor disk and a driven side conductor disk fixedly connected by bolts. The permanent magnet rotor disk is arranged on two sides. Between the two conductor disks, a fixed air gap is maintained between the permanent magnet rotor disk and the conductor disk, and a load flange is fixed on the permanent magnet rotor disk, and it is characterized in that the load method The outer ring of the flange is equipped with a bearing, and the bearing includes an inner ring and an outer ring. The inner ring of the bearing is in interference fit with the outer ring of the load flange, and the outer ring of the bearing is connected to the slave through a connecting piece. The outer connection of the moving side conductor plate. The beneficial effect is that the air gap between the conductor disk and the permanent disk can be kept constant.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to a magnetic coupling. Background technique [0002] The magnetic coupling realizes the torque transmission from the motor to the load through the air gap between the conductor disk and the permanent disk. Due to its high reliability, simple equipment structure, and low failure rate, it is widely used in mines and factories. In order to ensure a higher transmission efficiency, the air gap between the conductor disk and the permanent disk should be smaller in theory, but in fact, due to processing and assembly technology reasons, a certain air gap must generally be guaranteed to avoid Mechanical friction occurs during operation. For a coupler with a large power, such as a 400KW fan load used in mines, due to the consideration of displacement during high-speed rotation, the air gap should generally be reserved at 5-8 mm. However, in actual operation, the axial movement f...

AI Technical Summary

Problems solved by technology

However, in actual operation, the axial movement from the motor end is inevitable, especially the shaft movement of the motor will reach the maximum within a few seconds after starting up, and due to the rotational speed between the conductor disk and the permanent disk during the start-up phase The gap is the largest, if mechanical friction occurs between the two, it will immediately cause damage to the permanent disk due to frictional heat or reduce transmission performance

The equipment damage caused by this is relatively frequent, and on-site maintenance is very inconvenient, and may cause greater losses due to production stoppage, and such large equipment is sent back to the factory for maintenance, which will delay its use even more.

If the air gap between the conductor disk and the permanent disk is set too large for this purpose, although friction can be avoided, the loss of energy transmission will be large, which is also a very undesirable solution

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