CN201601588U - Permanent-magnet synchronous motor with low rotating speed and large torque - Google Patents

Permanent-magnet synchronous motor with low rotating speed and large torque Download PDF

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Publication number
CN201601588U
CN201601588U CN2009202831061U CN200920283106U CN201601588U CN 201601588 U CN201601588 U CN 201601588U CN 2009202831061 U CN2009202831061 U CN 2009202831061U CN 200920283106 U CN200920283106 U CN 200920283106U CN 201601588 U CN201601588 U CN 201601588U
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CN
China
Prior art keywords
rotor
stator
core
magnet synchronous
spider
Prior art date
Application number
CN2009202831061U
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Chinese (zh)
Inventor
刘永恒
孙玉泉
刘惠香
Original Assignee
昆山永恒盛工业技术有限公司
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Application filed by 昆山永恒盛工业技术有限公司 filed Critical 昆山永恒盛工业技术有限公司
Priority to CN2009202831061U priority Critical patent/CN201601588U/en
Application granted granted Critical
Publication of CN201601588U publication Critical patent/CN201601588U/en

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Abstract

The utility model discloses a permanent-magnet synchronous motor with low rotating speed and large torque. The iron core of a stator is fixedly press-mounted on the internal ring of a motor shell; the iron core of the stator consists of two stator end plates and a plurality of stator punching sheets that are clamped between the two stator end plates and formed by axial stacking; the stator punching sheet is a closed ring which is connected by a plurality of silicon steel sheets; the iron core of a rotor consists of a plurality of rotor punching sheets which are formed by axial stacking and connected into a closed ring by a plurality of silicon steel sheets; the external surface of the iron core of the rotor is provided with a plurality of concave positioning troughs; a plurality of alnicos are correspondingly embedded on the groove positioning trough; a rotor bracket, the iron core of the rotor and the plurality of alnicos are tightly pressed and fixed; and two ends of the rotating shaft extend out of the end cover of the motor to form the output with dual shaft heads. The iron core of the stator adopts a multi-sheet connection way and solves the problem that the diameter of the motor is restricted by the maximum width of the silicon steel sheets. The permanent-magnet synchronous motor has large power density, high power and power factor, large starting torque and running torque, and is suitable for being used in occasions with low rotating speed and large torque change range.

Description

Slow-speed of revolution large torque moment permanent-magnet synchronous machine

Technical field

The utility model relates to a kind of motor, especially a kind of slow-speed of revolution large torque moment permanent-magnet synchronous machine.

Background technology

Existing permagnetic synchronous motor mostly is that rotating speed is at 300-3000r/min, when being used in the occasion of the big torque of the slow-speed of revolution, need deceleration device, so just reduced the transmission efficiency of whole system, increased the power consumption of whole system, make the power consumption of whole system increase, increased its operating cost.

Summary of the invention

In order to overcome above-mentioned defective, the utility model provides a kind of slow-speed of revolution large torque moment permanent-magnet synchronous machine, can need not deceleration device and can realize the big torque rotation of the slow-speed of revolution, improve the transmission efficiency under the big torque occasion of the slow-speed of revolution, reduce the operating cost of whole system.

The utility model for the technical scheme that solves its technical problem and adopt is:

A kind of slow-speed of revolution large torque moment permanent-magnet synchronous machine, comprise electric motor end cap, stationary part and rotor portion, the rotatable stationary part that places of described rotor portion, described stationary part comprises motor housing, stator core and coil, described coil is embedded in the wire casing of described stator core, and described motor housing both sides fixedly cover and state electric motor end cap to some extent; Described rotor portion comprises rotor field spider, rotating shaft, rotor core and some magnet steel, described rotor core is embedded on the groove of described rotor field spider outer surface, described rotating shaft press-fits in the centre bore of rotor field spider, described stator core fixedly press-fits on the inner ring of motor housing, this stator core is by two stator end plates and be clipped on the multi-disc stator punching that axially laminates moulding between this two stator end plate and form, described stator punching is connected into closed ring-like by the multi-disc silicon steel sheet, stator core adopts this kind multi-disc connected mode, solved the restricted problem that motor diameter is subjected to the silicon steel sheet Breadth Maximum; Described rotor core is made up of the multi-disc rotor punching that axially laminates moulding, described rotor punching is connected into closed ring-like by the multi-disc silicon steel sheet, the outer surface of described rotor core is provided with some spill location notchs, described some magnet steel correspondences are embedded on the spill location notch of described rotor core, press fixingly between described rotor field spider, rotor core and the some magnet steel, described rotating shaft two ends are stretched out described electric motor end cap and are formed twin shaft head output.

As further improvement of the utility model, the structure that described stator core fixedly press-fits on the inner ring of motor housing is: described stationary part also comprises casing internal stop and two stator back-up rings, wherein a stator back-up ring fixedly press-fits in the motor housing of described stator core one side and described stator core one side of backstop all the time, described stator core opposite side is pressed successively and is provided with another stator back-up ring and casing internal stop, and described casing internal stop and motor housing are connected.

As further improvement of the utility model, be provided with some holding screws, described holding screw is with the fixedly stitching of inner ring of described stator core and described motor housing.

As further improvement of the utility model, pressing fixing structure between described rotor field spider, rotor core and the some magnet steel is: the axial both sides of described rotor field spider are respectively equipped with rotor silicon steel sheet pressing plate and some hold-down bolts, and described some hold-down bolts are fixed and clamped described rotor field spider, rotor core and some magnet steel between described two rotor silicon steel sheets.

As further improvement of the utility model, the spill location notch of described rotor core is along the circumferential direction evenly spaced apart.

As further improvement of the utility model, described magnet steel is the tile shape magnetic pole concentric with described rotor core, offer semicircle keyway on this axial both sides of tile shape magnetic pole rectangular surfaces, the cell wall position of the corresponding described semicircle keyway of the spill location notch of described rotor core forms the card key that protrudes, but described semicircle keyway is just stated the card key in the blocking residence, thereby magnet steel firmly is equipped in the spill location notch of rotor core, to improve the tensile strength of magnet steel, solved with the fixing illusive defective of magnet steel of adhesive methods such as glue.

As further improvement of the utility model, described electric motor end cap is stretched out at described rotating shaft two ends and the structure that forms twin shaft head output is: the outside, the two ends movable sleeve of the corresponding described electric motor end cap of described rotating shaft is provided with bearing and bearing (ball) cover, this bearing (ball) cover electric motor end cap that is connected, described bearing is located in the bearing (ball) cover.

Motor of the present utility model adopts the big width of major diameter, to solve the problem of the torque deficiency that causes owing to underexcitation.

The beneficial effects of the utility model are: magnet steel is a concentric type tile shape magnetic pole, on the rectangular surfaces of concentric type tile shape magnetic pole both sides, have semicircle keyway, magnet steel firmly is equipped in the spill location notch of rotor core, improved the tensile strength of magnet steel, solved with the fixing illusive defective of magnet steel of adhesive methods such as glue; Stator core adopts the multi-disc ways of connecting, solved the restricted problem that motor diameter is subjected to the silicon steel sheet Breadth Maximum; Cooperate motor to adopt the big width scheme of major diameter also can solve because the problem of the torque deficiency that underexcitation causes, the utility model power density is big, efficient is high and power factor (PF) is high, noise is low, operate steadily, speed adjusting performance is good, failure rate is low, operation expense is low, detent torque is big and the operation torque is big, and be particularly suitable under the slow-speed of revolution, torque range variation occasion greatly, using, broken through the problem of under the big torque occasion of the slow-speed of revolution, using multi-stage speed-reducing for a long time, reduce the energy consumption of middle transmission, improved the transmission efficiency of whole system.

Description of drawings

Fig. 1 is a schematic diagram of the present utility model;

Fig. 2 is the profile of Fig. 1;

Fig. 3 is the generalized section of stationary part described in the utility model;

Fig. 4 is the schematic diagram of rotor portion described in the utility model;

Fig. 5 is the structural representation of the described magnet steel of this patent;

Fig. 6 is the end view of Fig. 5;

The schematic diagram of Fig. 7 position rotating shaft described in the utility model.

Embodiment

Embodiment: a kind of slow-speed of revolution large torque moment permanent-magnet synchronous machine, comprise electric motor end cap 4, stationary part 20 and rotor portion 30, the described rotor portion 30 rotatable stationary parts 20 that place, described stationary part 20 comprises motor housing 5, stator core 6 and coil 12, described coil 12 is embedded in the wire casing of described stator core 6, and described motor housing 5 both sides fixedly cover states electric motor end cap 4 to some extent; Described rotor portion 30 comprises rotor field spider 9, rotating shaft 1, rotor core 8 and some magnet steel 7, described rotor core 8 is embedded on the groove of described rotor field spider 9 outer surfaces, described rotating shaft press-fits in the centre bore of rotor field spider 9, described stator core 6 fixedly press-fits on the inner ring of motor housing 5, this stator core 6 is by two stator end plates 15 and be clipped on the multi-disc stator punching that axially laminates moulding between this two stator end plate and form, described stator punching is connected into closed ring-like by the multi-disc silicon steel sheet, stator core adopts this kind multi-disc connected mode, solved the restricted problem that motor diameter is subjected to the silicon steel sheet Breadth Maximum; Described rotor core 8 is made up of the multi-disc rotor punching that axially laminates moulding, described rotor punching is connected into closed ring-like by the multi-disc silicon steel sheet, the outer surface of described rotor core 8 is provided with some spill location notchs, described some magnet steel 7 correspondences are embedded on the spill location notch of described rotor core 8, press fixingly between described rotor field spider 9, rotor core 8 and the some magnet steel 7, described rotating shaft 1 two ends are stretched out described electric motor end cap 4 and are formed the output of twin shaft head.

The structure that described stator core 6 fixedly press-fits on the inner ring of motor housing 5 is: described stationary part 20 also comprises casing internal stop 13 and two stator back-up rings 16, wherein a stator back-up ring 16 fixedly press-fits in the motor housing 5 of described stator core 6 one sides and described stator core 6 one sides of backstop all the time, described stator core 6 opposite sides are pressed successively and are provided with another stator back-up ring 16 and casing internal stop 13, and described casing internal stop 13 is connected with motor housing 5.

Be provided with some holding screws 14, described holding screw 14 is with the inner ring fixedly stitching of described stator core 6 with described motor housing 5.

Pressing fixing structure between described rotor field spider 9, rotor core 8 and the some magnet steel 7 is: the axial both sides of described rotor field spider 9 are respectively equipped with rotor silicon steel sheet pressing plate 10 and some hold-down bolts 11, and described some hold-down bolts are fixed and clamped described rotor field spider 9, rotor core 8 and some magnet steel 7 between described two rotor silicon steel sheets.

The spill location notch of described rotor core 8 is along the circumferential direction evenly spaced apart.

Described magnet steel 7 is the tile shape magnetic pole concentric with described rotor core 8, offer semicircle keyway 13 on this axial both sides of tile shape magnetic pole rectangular surfaces, the cell wall position of the corresponding described semicircle keyway 13 of the spill location notch of described rotor core 8 forms the card key that protrudes, but the card key is stated in described semicircle keyway 13 proper blocking residences, thereby magnet steel 7 firmly is equipped in the spill location notch of rotor core 8, to improve the tensile strength of magnet steel, solved with the fixing illusive defective of magnet steel of adhesive methods such as glue.

Described electric motor end cap 4 is stretched out at described rotating shaft 1 two ends and the structure that forms the output of twin shaft head is: the outside, the two ends movable sleeve of described rotating shaft 1 corresponding described electric motor end cap 4 is provided with bearing 3 and bearing (ball) cover 2, this bearing (ball) cover 2 electric motor end cap 4 that is connected, described bearing 3 is located in the bearing (ball) cover 2.

Motor of the present utility model adopts the big width of major diameter, to solve the problem of the torque deficiency that causes owing to underexcitation.

The utility model patent installation process is: at first rotating shaft 1 is pressed on the centre bore of rotor field spider 9, then that closed assembly is good rotor core 8 is mounted in the groove of rotor field spider 9 outer surfaces, magnet steel 7 with some formation concentric type tile shape magnetic poles is installed on the rotor core 8 along the spill location notch afterwards, and with rotor silicon steel sheet pressing plate 10 and hold-down bolt 11 it is compressed, to finish the assembling of rotor portion (Fig. 2).Press-fit a stator back-up ring 16 in motor housing 5, the stator core of then closed assembly being finished 6 press-fits on the motor housing 5, is pressed into stator back-up ring 16, casing internal stop 13 in the outside successively, and welds; Then coil 12 is embedded in the wire casing of stator core 6, after binding is finished, finish the assembling of stationary part (Fig. 3).Rotor portion 30 is packed in the stationary part 20, then electric motor end cap 4 is installed to the installation of finishing motor on the motor housing 5 at the bearing 3 of packing in the rotating shaft 1, bearing (ball) cover 2.

Magnet steel 7 is a concentric type tile shape magnetic pole, on the rectangular surfaces of concentric type tile shape magnetic pole both sides, have semicircle keyway 13, magnet steel 7 firmly is equipped in the spill location notch of rotor core 8, has improved the tensile strength of magnet steel 7, solved with the fixing magnet steel 7 illusive defectives of adhesive methods such as glue; Stator core 6 adopts the multi-disc ways of connecting, solved the restricted problem that motor diameter is subjected to the silicon steel sheet Breadth Maximum; If cooperate motor to adopt the big width scheme of major diameter also can solve because the problem of the torque deficiency that underexcitation causes, the utility model power density is big, efficient is high and power factor (PF) is high, noise is low, operate steadily, speed adjusting performance is good, failure rate is low, operation expense is low, detent torque is big and the operation torque is big, and be particularly suitable under the slow-speed of revolution, torque range variation occasion greatly, using, broken through the problem of under the big torque occasion of the slow-speed of revolution, using multi-stage speed-reducing for a long time, reduce the energy consumption of middle transmission, improved the transmission efficiency of whole system.

Claims (7)

1. slow-speed of revolution large torque moment permanent-magnet synchronous machine, comprise electric motor end cap (4), stationary part (20) and rotor portion (30), the rotatable stationary part (20) that places of described rotor portion (30), described stationary part (20) comprises motor housing (5), stator core (6) and coil (12), described coil (12) is embedded in the wire casing of described stator core (6), and described motor housing (5) both sides fixedly cover and state electric motor end cap (4) to some extent; Described rotor portion (30) comprises rotor field spider (9), rotating shaft (1), rotor core (8) and some magnet steel (7), described rotor core (8) is embedded on the groove of described rotor field spider (9) outer surface, described rotating shaft press-fits in the centre bore of rotor field spider (9), it is characterized in that: described stator core (6) fixedly press-fits on the inner ring of motor housing (5), this stator core (6) is by two stator end plates (15) and be clipped on the multi-disc stator punching that axially laminates moulding between this two stator end plate and form, and described stator punching is connected into closed ring-like by the multi-disc silicon steel sheet; Described rotor core (8) is made up of the multi-disc rotor punching that axially laminates moulding, described rotor punching is connected into closed ring-like by the multi-disc silicon steel sheet, the outer surface of described rotor core (8) is provided with some spill location notchs, described some magnet steel (7) correspondence is embedded on the spill location notch of described rotor core (8), press fixingly between described rotor field spider (9), rotor core (8) and the some magnet steel (7), described rotating shaft (1) two ends are stretched out described electric motor end cap (4) and are formed the output of twin shaft head.
2. slow-speed of revolution large torque moment permanent-magnet synchronous machine according to claim 1, it is characterized in that: the structure that described stator core (6) fixedly press-fits on the inner ring of motor housing (5) is: described stationary part (20) also comprises casing internal stop (13) and two stator back-up rings (16), wherein a stator back-up ring (16) fixedly press-fits in the motor housing (5) of described stator core (6) one sides and described stator core (6) one sides of backstop all the time, described stator core (6) opposite side is pressed successively and is provided with another stator back-up ring (16) and casing internal stop (13), and described casing internal stop (13) is connected with motor housing (5).
3. slow-speed of revolution large torque moment permanent-magnet synchronous machine according to claim 2 is characterized in that: be provided with some holding screws (14), described holding screw (14) is with the inner ring fixedly stitching of described stator core (6) with described motor housing (5).
4. slow-speed of revolution large torque moment permanent-magnet synchronous machine according to claim 1, it is characterized in that: pressing fixing structure between described rotor field spider (9), rotor core (8) and the some magnet steel (7) is: the axial both sides of described rotor field spider (9) are respectively equipped with rotor silicon steel sheet pressing plate (10) and some hold-down bolts (11), and described some hold-down bolts are fixed and clamped described rotor field spider (9), rotor core (8) and some magnet steel (7) between described two rotor silicon steel sheets.
5. according to claim 1 or 4 described slow-speed of revolution large torque moment permanent-magnet synchronous machines, it is characterized in that: the spill location notch of described rotor core (8) is along the circumferential direction evenly spaced apart.
6. according to claim 1 or 4 described slow-speed of revolution large torque moment permanent-magnet synchronous machines, it is characterized in that: described magnet steel (7) is the tile shape magnetic pole concentric with described rotor core (8), offer semicircle keyway (13) on this axial both sides of tile shape magnetic pole rectangular surfaces, the cell wall position of the corresponding described semicircle keyway of the spill location notch of described rotor core (8) (13) forms the card key that protrudes, described semicircle keyway (13) but just the blocking residence state the card key.
7. slow-speed of revolution large torque moment permanent-magnet synchronous machine according to claim 1, it is characterized in that: described electric motor end cap (4) is stretched out at described rotating shaft (1) two ends and the structure that forms the output of twin shaft head is: the outside, the two ends movable sleeve of the corresponding described electric motor end cap of described rotating shaft (1) (4) is provided with bearing (3) and bearing (ball) cover (2), this bearing (ball) cover (2) electric motor end cap (4) that is connected, described bearing (3) is located in the bearing (ball) cover (2).
CN2009202831061U 2009-12-23 2009-12-23 Permanent-magnet synchronous motor with low rotating speed and large torque CN201601588U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202831061U CN201601588U (en) 2009-12-23 2009-12-23 Permanent-magnet synchronous motor with low rotating speed and large torque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202831061U CN201601588U (en) 2009-12-23 2009-12-23 Permanent-magnet synchronous motor with low rotating speed and large torque

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102394543A (en) * 2010-11-13 2012-03-28 西安合升动力科技有限公司 Double-head alternating current permanent magnet synchronous spindle motor
CN102480204A (en) * 2010-11-26 2012-05-30 中山大洋电机股份有限公司 Rotor assembly
CN109317699A (en) * 2018-10-12 2019-02-12 苏州汇川技术有限公司 Electric spindle of lathe rotor, method for dismounting and electric spindle of lathe motor
CN110611411A (en) * 2019-10-23 2019-12-24 六安正辉优产机电科技有限公司 Brushless motor torque's adjusting part
CN110635642A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 Automatic torque-changing permanent magnet brushless motor
CN110635645A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 High-efficiency speed regulating method of brushless motor
CN110635646A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 Electric torque-changing permanent magnet brushless motor
CN110635648A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 Automatic torque conversion method of permanent magnet brushless motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102394543A (en) * 2010-11-13 2012-03-28 西安合升动力科技有限公司 Double-head alternating current permanent magnet synchronous spindle motor
CN102480204A (en) * 2010-11-26 2012-05-30 中山大洋电机股份有限公司 Rotor assembly
CN109317699A (en) * 2018-10-12 2019-02-12 苏州汇川技术有限公司 Electric spindle of lathe rotor, method for dismounting and electric spindle of lathe motor
CN110611411A (en) * 2019-10-23 2019-12-24 六安正辉优产机电科技有限公司 Brushless motor torque's adjusting part
CN110635642A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 Automatic torque-changing permanent magnet brushless motor
CN110635645A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 High-efficiency speed regulating method of brushless motor
CN110635646A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 Electric torque-changing permanent magnet brushless motor
CN110635648A (en) * 2019-10-23 2019-12-31 六安正辉优产机电科技有限公司 Automatic torque conversion method of permanent magnet brushless motor

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C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101006

Termination date: 20131223