Good-manufacturability motor rotor magnet steel fixing device and method
A technology of motor rotor and fixing device, which is applied in the manufacture of stator/rotor body, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc. Protection, motor burnout damage, etc.
Active Publication Date: 2015-02-25
中船西安东仪科工集团有限公司
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- Application Information
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Problems solved by technology
However, because the aluminum bead fixes the magnetic steel through the local outer edge, the magnetic steel of the guiding edge structure is not protected. Therefore, during the working process, high-speed operation and high-intensity vibration of the machine tool may shatter the magnetic steel with the guiding edge and burn the motor. damage
Method used
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[0029] Such as figure 1 As shown, a motor rotor magnet fixing device with good manufacturability at least includes: a magnet protection unit 11 and a magnet protection fixing unit 12, the magnet is fixed by the magnet protection unit 11, and the magnet protection unit 11 is protected by a steel The fixing unit 12 is fixed on the motor rotor 13 .
[0030] The magnetic steel protection units 11 are distributed every 45 degrees on the motor rotor 13 .
[0031] Such as image 3 As shown, the magnet protection unit 11 includes: a pole piece 1, a yoke 3, two magnets 2 are respectively installed in the two grooves of the pole piece 1, and then the yoke 3 is covered to seal the magnet 2 on the pole piece. 1. Between the yoke 3, the pole shoe 1 and the yoke 3 can not only protect the magnet 2 from being easily cracked, but also prevent the magnet 2 from flying out once it is cracked, causing a short circuit of the stator coil, resulting in a special motor damaged.
[0032] The two ...
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The invention relates to a good-manufacturability motor rotor magnet steel fixing device and method. The device at least comprises magnet steel protection units and magnet steel protection fixing units. Each magnet steel protection unit comprises a pole shoe, two magnet steels and a magnet yoke, the two magnet steels are mounted into two grooves of the pole shoe, and then the magnet yoke is covered to have the magnet steels closed between the pole shoe and the magnet yoke. Each magnet steel protection fixing unit comprises a pressing strip, a screw and a guard plate. Clamping grooves for fixing two ends of each pole shoe are arranged in two side of each pressing strip, a screw fixing hole is arranged in the middle of each pressing strip, a guard plate fixing groove is arranged in the inner side of each pressing strip, after the magnet steel protection units are assembled, the pole shoes of the magnet steel protection unit are inserted into the clamping grooves of the pressing strips, the pressing strips and the magnet steel protection units are fixed on a motor rotor together through the screws, and then the guard plates are inserted in along the guard plate fixing grooves in the inner sides of the pressing strips. By the device and method, when a motor is in high-speed rotation and high-strength vibration, the screws cannot get loose, the magnet steels are not broken by vibration, and accordingly safety of the motor and motor control are ensured.
Description
technical field [0001] The invention relates to a motor, specifically a special motor, in particular to a motor rotor magnetic steel fixing device and method with good manufacturability. Background technique [0002] At present, the rotors of special motors are made of "NdFeB" material. "NdFeB" is a strong magnetic and fragile material. Each set of rotors uses 182 pieces of this material, each with a size of (LxWxB)35x35x8. The aluminum bead is pressed and fixed, and the aluminum bead is fixed with stainless steel screws. During the high-frequency rotation of the forging machine, the screws loosen, causing the bead and the magnetic steel to loosen, which causes the magnetic steel to break, and the broken magnetic steel flies out and collides with the motor stator. Cause the stator to burn. Through the research on the technology of magnetic steel fixing protection, the magnetic steel will not be shaken and cracked during the high-speed rotation of the motor, and at the same ...
Claims
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IPC IPC(8): H02K1/28H02K15/02
CPCH02K1/28H02K15/02
Inventor 张爱华王毅杜大年刘旭沙琳
Owner 中船西安东仪科工集团有限公司