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Columnar linear motor in permanent magnet reluctance type

A linear motor, cylindrical technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of uneven axial distribution of the excitation magnetic field, low performance-to-volume ratio of the motor, and achieve improved performance-to-volume ratio and performance-to-weight ratio Ratio, uniform distribution, and longer core length

Inactive Publication Date: 2007-01-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems that the excitation magnetic field of the existing cylindrical hybrid linear motor is unevenly distributed along the axial direction and the performance volume ratio of the motor is low, the present invention provides a cylindrical permanent magnet reluctance linear motor

Method used

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  • Columnar linear motor in permanent magnet reluctance type
  • Columnar linear motor in permanent magnet reluctance type
  • Columnar linear motor in permanent magnet reluctance type

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Experimental program
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Effect test

specific Embodiment approach 1

[0011] Specific implementation mode one: see figure 1 , This embodiment consists of a permanent magnet 1, an armature winding 2, an armature core 3, a magnetic isolation ring 4, a casing 5, a non-armature core 6, an end cover 7, a bearing 8 and a shaft 9. The two end caps 7 are respectively connected to both ends of the casing 5, the outer rings of the two bearings 8 are respectively fixed in the inner holes of the two end caps 7, and the inner rings of the bearings 8 are fixedly connected to the shaft 9 . This motor is the movable structure of the non-armature iron core 6, the non-armature iron core 6 is cylindrical and is sleeved on the said shaft 9, the said armature iron core 3 is cylindrical, and the said armature iron core 3 The outer circular surface of the said casing 5 closely fits, an air gap 10 is formed between said armature core 3 and said non-armature core 6, said armature core 3 and said non-armature core 6. On the surface facing the air gap 10, ring-shaped s...

specific Embodiment approach 2

[0012] Specific implementation mode two: refer to figure 2 , the present embodiment is composed of the casing 5, the shaft 9 arranged on the central axis of the casing, the armature core 3, the magnetic isolation ring 4 arranged between the armature cores 3 of each phase, and arranged in each phase. Said armature core 3 is composed of annular armature winding 2 and non-armature core 6 between the two poles. The non-armature core 6 is cylindrical, and said armature core 3 is cylindrical. An air gap 10 is formed between the armature core 3 and the non-armature core 6, and the surfaces of the armature core 3 and the non-armature core 6 facing the air gap 10 are sequentially provided with annular rings along the axial direction. The tooth slot, the motor is the movable structure of the armature core 3, the armature core 3 is sleeved on the shaft 9, the outer circular surface of the non-armature core 6 and the inner surface of the casing 5 Closely fit, an annular permanent magnet...

specific Embodiment approach 3

[0013] Specific embodiment three: referring to Fig. 3, present embodiment is made up of casing 5, the axle 9 that is arranged on the central axis place in said casing, armature core 3, is arranged on the spacer between said armature core 3 of each phase. The magnetic ring 4, the annular armature winding 2 arranged on the armature core 3 of each phase and located between the two poles and the non-armature core 6 are composed of a cylindrical non-armature core 6, and the armature The armature core 3 is cylindrical, an air gap 10 is formed between the armature core 3 and the non-armature core 6, and the surfaces of the armature core 3 and the non-armature core 6 face the air gap 10 There are annular tooth grooves sequentially opened along the axial direction. The motor is a movable structure of the non-armature core 6. The non-armature core 6 is sleeved on the shaft 9. The outer circular surface of the armature core 3 Closely fit with the inner surface of the casing 5, the perman...

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Abstract

The linear motor is composed of the case, the spindle, the armature core, the magnetic insulation loop, the annular armature winding and the non-armature core. The motor is mobile type structure of columnar non-armature core put onto the spindle. The armature core is columnar. The exicrcle surface of the armature core is closely matched with the inner surface of the case. The annular tooth sockets are distributed along axial on the surfaces facing the gap between the armature core and the non-armature core. The annular permanent magnet is setup in each tooth socket of the armature core. The adjacent permanent magnet is magnetized in axial, but with opposite direction. The tooth pitch on an armature core with permanent magnet is a half tooth pitch on an armature core without permanent magnet. Comparing with prior art, the invention makes the excitation magnetic field distribute evenly and raises the ratio between performance and volume.

Description

technical field [0001] The invention relates to a linear motor. Background technique [0002] Traditional cylindrical hybrid linear motors (such as Figure 5 As shown), due to the influence of the core lamination gap, the excitation magnetic field generated by the permanent magnet is distributed very unevenly along the axial direction. The farther away from the permanent magnet, the weaker the magnetic field, which limits the choice of core lamination length and material The utilization rate of the motor, and due to the large magnetic flux leakage in the slot, the static torque saturation of the motor is faster, thereby reducing the performance-to-volume ratio of the motor. Contents of the invention [0003] In order to solve the problems of the existing cylindrical hybrid linear motor that the excitation magnetic field is unevenly distributed along the axial direction and the performance volume ratio of the motor is low, the present invention provides a cylindrical perman...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03
Inventor 李立毅寇宝泉程树康
Owner HARBIN INST OF TECH
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