CN103532322A

CN103532322A - Novel low-vibration torque simplex lap winding brush direct current motor

Info

Publication number: CN103532322A
Application number: CN201310463462.2A
Authority: CN
Inventors: 冯浩; 曾华; 赵浩
Original assignee: Hangzhou Dianzi University
Current assignee: Hangzhou Dianzi University
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2014-01-22
Anticipated expiration: 2033-09-30
Also published as: CN103532322B

Abstract

The invention discloses a novel low-vibration torque simplex lap winding brush direct current motor. Vibration torque produced by the conventional simplex lap winding brush direct current motor in a reversing process cannot be eliminated, so that vibration and noise are produced by the entire driven system. The novel low-vibration torque simplex lap winding brush direct current motor comprises left and right groups of direct current motors with the same structure and the same electromagnetic parameter, a stand, a rotating shaft, a left end cover, a left end cover bearing, a right end cover, a right end cover bearing, a fan and a fan cover, wherein each group of direct current motors comprises a main pole core, an armature core, an excitation winding, an armature winding, a reverser and an electric brush. The novel low-vibration torque simplex lap winding brush direct current motor has the advantages of low vibration torque and noise, simple structure and convenience in use.

Description

A kind of list of novel low-vibration torque winding that changes has brushless motor

Technical field

The present invention relates to a kind of low Vibration Torque has brushless motor, and the list that is specifically related to a kind of novel low-vibration torque repeatedly (single ripple) winding has brushless motor.

Background technology

The list in past is (single ripple) winding brush DC motors repeatedly, owing to there being commutation, therefore the Vibration Torque that exists commutation process to produce, and heavier the produced Vibration Torque of load is larger, because, commutation is the operation basis of DC motor, so the Vibration Torque that commutation process produces cannot be eliminated, the scheme that does not have so far proposition to overcome.In the actual use of motor, the Vibration Torque that commutation process produces is equivalent to an exciting source, can make whole driven system produce vibration and noise.

Summary of the invention

The object of the invention is for the deficiencies in the prior art, the list that has proposed a kind of novel low-vibration torque repeatedly (single ripple) winding has brushless motor.

The present invention is achieved through the following technical solutions:

The list of torque repeatedly (single ripple) winding has a brushless motor, comprises two groups of the left and right DC motor that structure is identical and electromagnetic parameter is identical, support, rotating shaft, left end cap, left end cap bearing, right end cap, right end cap bearing, fan, fan guard; Every group of direct current machine comprises main pole core, armature core, excitation winding, armature winding, commutator and brush;

Described two groups of left and right DC motor main pole core is fixed on same support, two groups of excitation winding embed respectively in two groups of main pole cores, two groups of armature cores and commutator are fixed in same rotating shaft, two groups of armature winding embed respectively on two groups of armature cores, rotating shaft is fixed by left and right end cap and left and right bearing with end cover and support, wherein an end cap outside is provided with fan, and brush is arranged on support by brush carrier, and two groups of main pole cores exist identical air gap with armature core; Wherein the relative position of its main pole, armature winding and commutator separately of the two groups of DC motor in left and right meets respectively: when an armature loop commutation is during by brush short circuit, the induced potential in this commutation element is minimum; And when two groups of left and right main pole core, armature core and commutator align vertically one by one, brush along the circumferential direction stagger mutually angle or the brush of 1/2 width of commutator segment in left and right aligns vertically, along the circumferential direction stagger the mutually angle of 1/2 width of commutator segment of two groups of left and right main pole core, armature core and commutator;

Described fan is installed in described rotating shaft, and described fan is positioned at the wherein axial outside of an end cap, and fan outside is provided with fan guard.

Beneficial effect of the present invention: the present invention has advantages of low Vibration Torque and noise, simple in structure, easy to use.

Accompanying drawing explanation

Fig. 1 is the structural representation that novel low-vibration torque has brushless motor;

Fig. 2 is the curve that the Vibration Torque of two motors changes with electrical degree;

Fig. 3 (1), (2) are the armature coil of Fig. 2 embodiment and two kinds of different fit system schematic diagrames of brush.

Embodiment

Below in conjunction with accompanying drawing, further describe the enforcement of novel low-vibration torque direct current machine of the present invention.

As shown in Figure 1, the list of torque repeatedly (single ripple) winding has a brushless motor, comprises two groups of left and right the first DC motor that structure is identical and electrical quantity is identical and the second DC motor, support 6, rotating shaft 7, left end cap 4, left end cap bearing 3, right end cap 5, right end cap bearing 1, fan 8, fan guard 2; Described the first direct current machine comprises the first main pole core 103, the first armature core 101, the first excitation winding 104, the first armature winding 102, the first commutator 106 and the first brush 105; The second direct current machine comprises the second main pole core 203, the second armature core 201, the second excitation winding 204, the second armature winding 202, the second commutator 206 and the second brush 205;

The first main pole core 103 of the described two groups of DC motor in left and right, the second main pole core 203 is fixed on same support, the first excitation winding 104, the second excitation winding 204 embeds respectively the first main pole core 103, the second main pole core 203, the first armature core 101, the second armature core 201 first commutators 106 and the second commutator 206 are fixed in rotating shaft 7, the first armature winding 102, the second armature winding 202 embeds respectively the first armature core 101, the second armature core 201, rotating shaft 7 is by left end cap 4, right end cap 5 and left end cap bearing 3, right end cap bearing 1 is fixing with support 6, wherein an end cap outside is provided with fan 8, the first brush 105 and the second brush 205 are arranged on support by brush carrier respectively, there is identical air gap with armature core in two groups of main pole cores, when wherein left and right two groups of main pole cores, armature core and commutators align vertically one by one, stagger mutually angle or the brush of 1/2 width of commutator segment of the first brush 105 and the second brush 205 circumferencial directions aligns vertically, along the circumferential direction stagger the mutually angle of 1/2 width of commutator segment of two groups of left and right main pole core, armature core and commutator.Described fan 8 is installed in described rotating shaft 7, and described fan 8 is positioned at the wherein axial outside of an end cap, and fan 8 outsides are provided with fan guard 2.

As Fig. 3 (1), as shown in Fig. 3 (2), when two of left and right DC motor adds the field power supply of same voltage, armature adds the armature power supply of same voltage, and when two DC motor are rotated in the same direction, the output torque that two of left and right DC motor produces superposes mutually, and the Vibration Torque that two of left and right DC motor produces is as shown in Figure 2, mutual deviation

Figure 2013104634622100002DEST_PATH_IMAGE002

electrical degree, can be offset by complementary.If two of left and right DC motor full symmetric, Vibration Torque can be offset completely.

Claims

1. the list of the novel low-vibration torque winding that changes has a brushless motor, comprises two groups of the left and right DC motor that structure is identical and electromagnetic parameter is identical, support, rotating shaft, left end cap, left end cap bearing, right end cap, right end cap bearing, fan, fan guard; Every group of direct current machine comprises main pole core, armature core, excitation winding, armature winding, commutator and brush;

It is characterized in that: described two groups of left and right DC motor main pole core is fixed on same support, two groups of excitation winding embed respectively in two groups of main pole cores, two groups of armature cores and commutator are fixed in same rotating shaft, two groups of armature winding embed respectively on two groups of armature cores, rotating shaft is fixed by left and right end cap and left and right bearing with end cover and support, wherein an end cap outside is provided with fan, brush is arranged on support by brush carrier, and two groups of main pole cores exist identical air gap with armature core; Wherein the relative position of its main pole, armature winding and commutator separately of the two groups of DC motor in left and right meets respectively: when an armature loop commutation is during by brush short circuit, the induced potential in this commutation element is minimum; And when two groups of left and right main pole core, armature core and commutator align vertically one by one, brush along the circumferential direction stagger mutually angle or the brush of 1/2 width of commutator segment in left and right aligns vertically, along the circumferential direction stagger the mutually angle of 1/2 width of commutator segment of two groups of left and right main pole core, armature core and commutator.

2. the list of a kind of novel low-vibration torque according to claim 1 winding that changes has brushless motor, it is characterized in that: described fan is installed in rotating shaft, and is positioned at the wherein axial outside of an end cap, and fan outside is provided with fan guard.