Permanent magnet motor rotor structure and installation method
By designing the rotor structure of the permanent magnet motor and setting mounting holes on the reinforcing ribs, the problems of rotor imbalance calibration and unreasonable counterweight structure of the special low-speed high-torque permanent magnet synchronous motor for underground mining belt conveyors were solved, thereby achieving the reliability of rotor assembly and reducing maintenance costs.
CN115118039BActive Publication Date: 2026-05-26NINGXIA NORTHWEST HORSE ELECTRIC MFG
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGXIA NORTHWEST HORSE ELECTRIC MFG
- Filing Date
- 2022-06-16
- Publication Date
- 2026-05-26
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Figure CN115118039B_ABST
Abstract
A permanent magnet motor rotor structure includes a permanent magnet, rotor laminations, a motor shaft, a T-key, fastening screws, fastening bolts, a magnetic shielding baffle, a pressure ring, a first support cylinder, a second support cylinder, reinforcing ribs, and a counterweight. After the first and second support cylinders and reinforcing ribs are welded together, they are assembled with the motor shaft. Then, the pressure ring, T-key, fastening screws, rotor laminations, and inner fastening bolts are assembled. Next, the magnetic shielding baffle, outer fastening bolts, and permanent magnet are assembled. After the permanent magnet motor rotor is installed, dynamic balancing is performed. During rotor balancing, the counterweight is welded to the second support cylinder based on the actual imbalance. The amount of welding on the counterweight is relatively large at certain points. This structural design not only improves the installation reliability of the counterweight but also reduces contamination of the permanent magnet motor rotor and reduces the workload of workers.
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