Single-pole permanent-magnetic cylindrical DC linear motor
A linear motor and cylinder-type technology, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of complex structure, inconvenient use, and difficult practical application of superconducting equipment, and achieve good adjustability, fabrication and installation Easy, large axial output force effect
Inactive Publication Date: 2007-04-04
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology
The radial component of its magnetic field strength can reach about 0.8T, the diameter of the temperature hole is 550mm, and the thrust generated is 7285N, but the structure of the superconducting equipment is complex, requiring a huge low-temperature cooling system, difficult to maintain, expensive, and inconvenient to use. Difficult to apply
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] Fig. 2 is a structure of a permanent magnet cylindrical unipolar DC linear motor according to a specific embodiment of the present invention. It includes an output shaft 1, a sliding bearing 2, an end cover 3, a casing 4, a mover coil 5, a mover frame 6, a stator 7 and a stator hoop shell 8.
[0019] The stator 7 is composed of 21 (n=10) neodymium-iron-boron magnetic rings of equal radial thickness, which are clamped and fixed by the non-magnetic clamping shell 8, and the inner magnetic hole is the effective working space of the magnetic field. The mover composed of the mover frame 6 and the mover coil 5 is coaxially arranged in the magnetic hole inside the stator 7, the mover coil 5 is wound on the non-magnetic disc-shaped frame 6, and the frame 6 is fixedly connected to the non-magnetic on output shaft 1. The output shaft 1 protrudes...
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The invention is concerned with permanent magnet cylinder monopole direct current (DC) beeline electromotor. The stator magnetism route takes in series structure and cancels iron magnetism part to magnetize the 2n+1 NdFeB magnetic circle in certain rule and close work gas. Each NdFeB magnetic circle of the stator magnetism route has axes symmetry character about geometry structure and magnetization direction to realize the immobile magnetic field along the circumference. The rotor is made up of disk type framework and rotor winding. The rotor winding rolls on the disk type non-guiding magnetism framework, and the framework fixes on the non-guiding magnetism export axes, the latter spreads out of two covers of electromotor through sliding bearing. The invention had long work journey and large axes export power. The stator magnetism has simple structure and easy production without iron magnetism part in good adjustment character, and the both ends of export axes connect with load. It can be used in pushing equipment with large thrust to display superconductive linear motor.
Description
technical field [0001] The invention relates to the field of linear motors, in particular to a permanent magnet cylindrical unipolar direct current linear motor. technical background [0002] A linear motor usually consists of a stator and a mover. According to the operating principle, it can be divided into stepping linear motor, asynchronous linear motor and permanent magnet linear motor; according to the structure, it can be divided into flat linear motor, bilateral linear motor and cylindrical linear motor. The stator and the mover of the cylindrical linear motor are coaxially arranged. Compared with flat-plate and double-sided linear motors, cylindrical linear motors have low Joule loss (for a certain electromagnetic force), small size, high specific characteristics, large electromagnetic force density, and no attraction between the stator and the mover in the vertical direction of motion. And other advantages, so the application is increasingly widespread. [0003] ...
Claims
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Inventor 彭燕赵凌志凌金福沙次文李然
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI