CN116827033A - Permanent magnet synchronous motor capable of replacing speed reducer - Google Patents

Permanent magnet synchronous motor capable of replacing speed reducer Download PDF

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Publication number
CN116827033A
CN116827033A CN202310553872.XA CN202310553872A CN116827033A CN 116827033 A CN116827033 A CN 116827033A CN 202310553872 A CN202310553872 A CN 202310553872A CN 116827033 A CN116827033 A CN 116827033A
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CN
China
Prior art keywords
motor
permanent magnet
motor housing
front side
fixedly connected
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Withdrawn
Application number
CN202310553872.XA
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Chinese (zh)
Inventor
韦小青
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Individual
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Individual
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Priority to CN202310553872.XA priority Critical patent/CN116827033A/en
Publication of CN116827033A publication Critical patent/CN116827033A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention provides a permanent magnet synchronous motor capable of replacing a speed reducer, and relates to the technical field of motors. The permanent magnet synchronous motor capable of replacing the speed reducer comprises a motor housing, wherein a motor mounting seat is fixedly connected to the lower portion of the motor housing, an air inlet and a heat dissipation opening are formed in the rear side wall of the motor housing, a stator assembly is arranged in the motor housing, and a rotor assembly is arranged on the inner side of the stator assembly. Through having set up stator module and rotor subassembly, can separate antifriction bearing part and stator subassembly separately and divide the region to separate, avoided the dust to adhere to on antifriction bearing part and stator subassembly effectively, in radiating, have good dustproof effect to heat radiation structure can not influence the holistic intensity of motor housing, improves motor housing's anticollision performance, further improves motor's life, the design of front side retaining ring still has the gathering and flows gas, carries out the effect of clearance to motor output shaft.

Description

Permanent magnet synchronous motor capable of replacing speed reducer
Technical Field
The invention relates to the technical field of motors, in particular to a permanent magnet synchronous motor capable of replacing a speed reducer.
Background
Nowadays, driving power of various mechanical equipment at home and abroad needs to adopt a belt transmission mode driven by a motor, a chain transmission mode or a motor acceleration and deceleration device driving mode besides adopting air power of compressed air, wherein the belt and chain transmission mode is also combined with different deceleration devices at some time. Therefore, various speed reducers are widely used in mechanical transmission, and even in various automatic intelligent devices at present, the speed reducers are indispensable power transmission devices, but because the speed reducers are independent components consisting of gear transmission, worm transmission and gear-worm transmission which are enclosed in a rigid shell, and are manufactured by adopting a metal processing machine tool with relatively high precision, the requirements on the materials of metal materials are high, the manufacturing process is long, and the input cost is high, the development of a permanent magnet synchronous motor capable of replacing the speed reducers is necessary.
In the existing permanent magnet synchronous motor, the stator is basically the same as the common induction motor and adopts a lamination structure to reduce the iron loss when the motor operates, and in the related technology, the application number is as follows: the Chinese patent of 201810129947.0 is named: "permanent magnet synchronous motor", it includes stator, rotor, wind wheel, upper end cover, lower end cover and casing, permanent magnet synchronous motor still includes: the fan housing is arranged on the outer side of the lower end cover, and forms a containing space with the lower end cover, and the containing space is communicated with the interior of the shell; the air channels are respectively arranged on the outer side of the shell and are communicated with the accommodating space; the air duct is arranged in the air duct, and is communicated with the air duct through the air duct; the wind wheel is arranged in the accommodating space.
The permanent magnet synchronous motor disclosed by the patent can timely emit heat generated in the permanent magnet synchronous motor, so that demagnetization of a permanent magnet in a rotor caused by gradual temperature rise in the permanent magnet synchronous motor is avoided, and the motor is further prevented from being damaged; therefore, the service performance of the permanent magnet synchronous motor is improved, the overall heat dissipation efficiency of the permanent magnet synchronous motor is improved, the permanent magnet synchronous motor is ensured to run safely, however, due to the arrangement of a cavity, the strength of the shell of the permanent magnet synchronous motor is weakened, the shell is sunken easily due to collision, and the service life of the permanent magnet synchronous motor is influenced.
The application number is as follows: the Chinese patent of 202110918050.8 is named: the permanent magnet synchronous motor capable of replacing the speed reducer comprises a motor shell and a power output shaft, wherein the front end of the power output shaft is externally connected with a motor outer rotor, a rotor permanent magnet steel block is arranged on the inner wall of the motor outer rotor, a motor stator is arranged in the motor outer rotor, a stator coil winding is arranged on the motor stator, and the motor stator is positioned outside the motor shell. The motor shell is a double-layer shell, a cavity is formed between the double-layer shells, one end of the cavity is open, and the motor outer rotor and the motor stator are both positioned in the cavity.
The permanent magnet synchronous motor cancels a speed reducer in mechanical transmission, directly drives mechanical equipment, simplifies the structure of the mechanical equipment, reduces the volume and the cost, and simultaneously reduces the energy consumption of the motor.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a permanent magnet synchronous motor capable of replacing a speed reducer, which solves the problems that the existing permanent magnet synchronous motor is poor in heat dissipation effect, cannot well avoid the influence of a heat dissipation structure on the strength of a shell, is short in service life and is not durable enough to use.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a permanent magnet synchronous motor of interchangeable speed reducer, includes the motor housing, the lower part fixedly connected with motor mount pad of motor housing, the back lateral wall of motor housing is provided with the air inlet thermovent, the inside of motor housing is provided with stator module, stator module's inboard is provided with the rotor subassembly, stator module is including setting up the inside motor stator of motor housing, be provided with motor stator coil winding on the motor stator, the back lateral wall fixedly connected with bearing installation barrel of motor housing, the inner wall of motor housing just is located the outside fixedly connected with safety cover of bearing installation barrel, the internally mounted of bearing installation barrel has antifriction bearing;
the motor rotor assembly comprises a motor output shaft arranged in a rolling bearing, a fixing frame is fixedly connected to the motor output shaft, a fixing threaded hole is formed in the fixing frame, a motor rotor driving cylinder is detachably connected to the fixing frame and located at the fixing threaded hole through a mounting bolt, a plurality of rotor permanent magnet steel blocks are fixedly connected to the outer circumferential surface of the motor rotor driving cylinder and are uniformly distributed in the circumference of N poles and S poles alternately, a protection sheet is fixedly connected to the motor output shaft and located at the rear of the fixing frame, and an air outlet cooling hole is formed in the front side wall of the motor rotor driving cylinder.
Preferably, the rear end of the motor output shaft penetrates through the rear side wall of the motor shell and is fixedly connected with a heat dissipation fan blade, a rear side protecting cover is arranged on the outer side of the heat dissipation fan blade, protecting cover meshes are uniformly arranged on the rear side protecting cover, the rear side surface of the motor shell is fixedly connected with a rear side mounting edge, and the rear side protecting cover is detachably connected with the rear side mounting edge through a screw.
Preferably, the front part of the motor shell is provided with a front side end cover, the rear side wall of the front side end cover is fixedly connected with a front side check ring, the radius of the outer ring of the front side check ring is the same as that of the motor rotor driving cylinder, the front side surface of the motor shell is fixedly connected with a front side mounting edge, the front side mounting edge is detachably connected with the front side end cover through screws, a through hole is formed in the center of the front side end cover, and a gap of 1-2 mm is reserved between the through hole and a motor output shaft.
Preferably, a power supply box is fixedly connected to the upper portion of the motor housing, and the wiring terminals of the motor stator coil winding are electrically connected with the wiring terminals of the power supply box.
Preferably, the number of the rolling bearings is two, the rolling bearings are both positioned in the bearing installation cylinder, the radius of the protective sheet is the same as the outer diameter of the bearing installation cylinder, and the protective sheet is in contact with the front end face of the bearing installation cylinder.
Preferably, the inner diameter of the protective cover is the same as the outer radius of the motor rotor driving cylinder, a convex ring is arranged on the inner side of the protective cover, and the front side surface of the convex ring is in contact with the rear side end surface of the motor rotor driving cylinder.
Preferably, the number of the air inlet heat dissipation openings is seven, the air inlet heat dissipation openings are uniformly arranged on the circumference, the air inlet heat dissipation openings are positioned at the gap between the protective cover and the bearing installation cylinder body, the number of the air outlet heat dissipation openings is four, the air inlet heat dissipation openings are uniformly distributed on the circumference, and the air outlet heat dissipation openings are positioned on the inner side of the front side check ring.
Preferably, the shape of mount is the cross, fixed screw hole and mounting bolt's quantity is the same, and just is four, mounting bolt and fixed screw hole threaded connection.
(III) beneficial effects
The invention provides a permanent magnet synchronous motor capable of replacing a speed reducer. The beneficial effects are as follows:
1. compared with the prior art, the permanent magnet synchronous motor provided by the invention is provided with the motor stator, the motor stator coil winding, the motor output shaft, the fixing frame, the motor rotor driving cylinder and the rotor permanent magnet steel block, and the permanent magnet synchronous motor capable of replacing the speed reducer has the characteristics of high driving efficiency, small volume, large torque, reasonable structure and reliable design, can replace the speed reducer to be put into use, and is low in overall preparation cost and manufacturing difficulty.
2. Compared with the prior art, the invention is provided with the bearing mounting cylinder body, the protective cover, the protective sheet, the motor rotor driving cylinder and the fixing frame, can separate the rolling bearing part from the stator assembly independently and in areas, effectively avoids dust from adhering to the rolling bearing part and the stator assembly, has good dustproof effect, thus prolonging the whole service life, and the fixing frame is designed to be capable of independently disassembling and replacing the motor output shaft in the using process, has good wildcard property, saves maintenance cost and improves the production profit of enterprises.
3. Compared with the prior art, the motor has the advantages that the rear side protecting cover, the front side end cover, the heat radiating fan blades, the air inlet heat radiating opening and the air outlet heat radiating opening are arranged, the outside air and the air in the motor can be circularly replaced, the rotor assembly and the stator assembly can be cooled rapidly, a good heat radiating effect is achieved, the whole strength of the motor shell cannot be influenced by a heat radiating structure, the anti-collision performance of the motor shell is improved, and the service life of the motor is further prolonged.
4. Compared with the prior art, the front side check ring is arranged, so that not only can a protection effect be provided for the stator assembly, but also the function of collecting flowing gas and cleaning the motor output shaft can be realized, dust attached to the motor output shaft is avoided, and the connection tightness and firmness of the motor output shaft and external mechanical parts are affected.
Drawings
FIG. 1 is an overall perspective view of the present invention;
FIG. 2 is a schematic cross-sectional internal structure of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is an exploded view of another view of the present invention;
FIG. 5 is a split view of the motor output shaft and motor rotor drive cylinder portion of the present invention;
FIG. 6 is a perspective view of a motor housing portion of the present invention;
fig. 7 is a cross-sectional view of a motor housing portion of the present invention.
101, a front end cover; 1011. a front retainer ring; 102. a rear protective cover; 1021. a protecting cover mesh; 201. a motor housing; 2011. an air inlet and a heat dissipation port; 202. a motor mounting seat; 203. a power supply box; 204. a motor stator; 205. motor stator coil windings; 206. a rolling bearing; 207. a rear mounting edge; 208. a front side mounting edge; 209. a bearing mounting cylinder; 210. a protective cover; 301. an output shaft of the motor; 302. a protective sheet; 303. a fixing frame; 3031. fixing the threaded holes; 304. installing a bolt; 305. a motor rotor drive cylinder; 3051. an air outlet heat dissipation port; 306. rotor permanent magnet steel blocks; 307. and the heat dissipation fan blade.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
as shown in fig. 1-7, the embodiment of the invention provides a permanent magnet synchronous motor capable of replacing a speed reducer, which comprises a motor housing 201, wherein a front side end cover 101 is arranged at the front part of the motor housing 201, a front side retainer ring 1011 is fixedly connected to the rear side wall of the front side end cover 101, the radius of the outer ring of the front side retainer ring 1011 is the same as that of a motor rotor driving cylinder 305, a front side mounting edge 208 is fixedly connected to the front side surface of the motor housing 201, the front side mounting edge 208 is detachably connected with the front side end cover 101 through screws, a through hole is arranged at the center of the front side end cover 101, a gap of 1-2 mm is reserved between the through hole and the motor output shaft 301, the gap is used for gas circulation, the front side retainer ring 1011 not only can provide a protection effect for a stator assembly, but also can gather flowing gas to clean the motor output shaft 301, dust is prevented from being attached to a part of the motor output shaft 301, thereby affecting the connection tightness and firmness of the motor output shaft 301 and the external mechanical parts, the upper part of the motor housing 201 is fixedly connected with the power box 203, the wiring end of the motor stator coil winding 205 is electrically connected with the wiring end of the power box 203, the whole body can be connected with an external power source through the power box 203 for providing current for the motor stator coil winding 205 so as to push the motor rotor driving cylinder 305 to move through strong magnetic force, wherein the winding mode of the motor stator coil winding 205 is the prior art, which is not repeated herein, the lower part of the motor housing 201 is fixedly connected with the motor mounting seat 202, the motor mounting seat 202 is provided with mounting holes for mounting the whole body, the hollow holes are arranged in the motor mounting seat 202, the whole body weight can be reduced, the manufacturing cost can be reduced, the rear side wall of the motor housing 201 is provided with the air inlet and heat dissipation opening 2011, seven air inlet heat dissipation openings 2011 are uniformly arranged on the circumference, the air inlet heat dissipation openings 2011 are positioned at the gap between the protective cover 210 and the bearing mounting cylinder 209, four air outlet heat dissipation openings 3051 are uniformly distributed on the circumference, the air outlet heat dissipation openings 3051 are positioned on the inner side of the front side retainer ring 1011, and a stator assembly is arranged in the motor shell 201;
when the motor stator 204 is electrically connected with an external power supply through the power box 203, the motor stator 204 generates strong magnetic force after being electrified, the strong magnetic force generated by the motor stator 204 pushes the rotor permanent magnet steel block 306 on the motor rotor driving cylinder 305 to generate strong magnetic force, the motor rotor driving cylinder 305 drives the motor output shaft 301 to rotate through the fixing frame 303, the motor output shaft 301 drives the heat dissipation fan 307 and the external mechanical parts connected with the motor output shaft 301 in a key manner to rotate, the rotating heat dissipation fan 307 sucks external air flow from the cover mesh 1021 of the rear side cover 102, then the air flow enters the inside of the motor shell 201 through the air inlet heat dissipation port 2011, and because the external air flow can be simultaneously contacted with the bearing mounting cylinder 209 and the motor stator 204, heat on the bearing mounting cylinder 209 is generated by friction, and heat on the motor stator 204 is generated by a part of electric energy conversion, external air and air inside the motor can be circularly replaced, a rotor assembly and a stator assembly can be rapidly cooled, a good heat dissipation effect is achieved, the whole strength of the motor shell 201 is not influenced, the motor shell is improved, the anti-collision service life of the motor is further prolonged, and the motor is further prolonged.
The inside of the stator assembly is provided with a rotor assembly, the stator assembly comprises a motor stator 204 arranged in a motor shell 201, the motor stator 204 is provided with a motor stator coil winding 205, the rear side wall of the motor shell 201 is fixedly connected with a bearing installation cylinder 209, the inner wall of the motor shell 201 and the outer side of the bearing installation cylinder 209 are fixedly connected with a protective cover 210, the protective cover 210 and the space formed by the motor stator 204 can provide a protective effect for the motor stator coil winding 205, a protective sheet 302 and the bearing installation cylinder 209 can provide a good protective effect for the rolling bearing 206, dust is effectively prevented from adhering to the rolling bearing 206 part and the stator assembly, and the good dustproof effect is achieved, therefore, the overall service life is prolonged, and the design of the fixing frame 303 can be independently disassembled and replaced for the motor output shaft 301 in the use process, the protective cover 210 has good wildlife, saves maintenance cost, improves production profits of enterprises, has the same inner diameter as the outer radius of the motor rotor driving cylinder 305, is provided with a convex ring on the inner side of the protective cover 210, the front side surface of the convex ring is contacted with the rear side end surface of the motor rotor driving cylinder 305, the rolling bearings 206 are arranged in the bearing mounting cylinder 209, the number of the rolling bearings 206 is two and are positioned in the bearing mounting cylinder 209, the radius of the protective sheet 302 is the same as the outer diameter of the bearing mounting cylinder 209, the protective sheet 302 is contacted with the front side end surface of the bearing mounting cylinder 209, the protective cover 210 and the protective sheet 302 can separate the rolling bearing 206 part and the stator assembly independently, thereby effectively avoiding dust from adhering to the rolling bearing 206 part and the stator assembly, having good dustproof effect, therefore, the service life of the whole is prolonged;
the rotor assembly comprises a motor output shaft 301 arranged in a rolling bearing 206, the rear end of the motor output shaft 301 passes through the rear side wall of a motor housing 201 and is fixedly connected with a heat dissipation fan blade 307, the outer side of the heat dissipation fan blade 307 is provided with a rear side protecting cover 102, protecting cover meshes 1021 are uniformly arranged on the rear side protecting cover 102, the rear side surface of the motor housing 201 is fixedly connected with a rear side mounting edge 207, the rear side protecting cover 102 and the rear side mounting edge 207 are detachably connected through screws, the heat dissipation fan blade 307 can circularly replace the outside air with the air in the motor, the rotor assembly and the stator assembly can be rapidly cooled at the same time, the heat dissipation effect is good, the heat dissipation structure does not influence the integral strength of the motor housing 201, the anti-collision performance of the motor housing 201 is improved, the service life of the motor is further improved, a fixing frame 303 is fixedly connected on the motor output shaft 301, the shape of the fixing frame 303 is cross, the design of the fixing frame 303 can be used for independently disassembling and replacing the motor output shaft 301, the fixing frame 303 has good universality, the maintenance cost is saved, the production profit of enterprises is improved, the number of the fixing threaded holes 3031 and the number of the mounting bolts 304 are the same, the number of the mounting bolts 304 and the number of the fixing threaded holes 3031 are four, when the motor output shaft 301 needs to be disassembled and replaced, the front end cover 101 is disassembled, then the mounting bolts 304 are unscrewed, at the moment, the motor output shaft 301 and the motor rotor driving cylinder 305 can be separated, thereby the motor output shaft 301 is convenient to replace, the fixing frame 303 is provided with the fixing threaded holes 3031, the motor rotor driving cylinder 305 is detachably connected to the fixing frame 303 and the fixing threaded holes 3031 through the mounting bolts 304, the outer circumference of the motor rotor driving barrel 305 is fixedly connected with a plurality of rotor permanent magnet steel blocks 306, the rotor permanent magnet steel blocks 306 are made of rare earth neodymium iron boron ferromagnetic materials, less heat can be generated while strong magnetic force is provided, the plurality of rotor permanent magnet steel blocks 306 are uniformly distributed on the circumference of N poles and S poles alternately, the motor output shaft 301 is fixedly connected with a protection sheet 302 at the rear of the fixing frame 303, the front side wall of the motor rotor driving barrel 305 is provided with an air outlet heat dissipation port 3051, and the motor rotor driving barrel 305 can replace the characteristics of high driving efficiency, small volume, large torque, reasonable structure and reliable design of a permanent magnet synchronous motor of a speed reducer.
Working principle: when in use, the motor stator 204 is electrically connected with an external power supply through the power box 203, and then generates strong magnetic force, the strong magnetic force generated by the motor stator 204 pushes the strong magnetic force generated by the rotor permanent magnet steel block 306 on the motor rotor driving cylinder 305, the motor rotor driving cylinder 305 drives the motor output shaft 301 to rotate through the fixing frame 303, the motor output shaft 301 drives the heat dissipation fan 307 and the mechanical parts which are externally connected with the motor output shaft 301 in a key way to rotate, the rotating heat dissipation fan 307 sucks external air flow from the cover mesh 1021 of the rear side cover 102, then the external air flow enters the inside of the motor shell 201 through the air inlet heat dissipation port 2011, and as the external air flow can be simultaneously contacted with the bearing mounting cylinder 209 and the motor stator 204, heat on the bearing mounting cylinder 209 and heat on the motor stator 204 can be rapidly taken away, and the heat of the bearing mounting cylinder 209 comes from heat generated by friction, the heat on the motor stator 204 comes from the heat formed by converting a part of electric energy, can circulate and replace the external air and the air in the motor, can cool the rotor assembly and the stator assembly rapidly, has good heat dissipation effect, and the heat dissipation structure does not influence the integral strength of the motor shell 201, improves the anti-collision performance of the motor shell 201, further improves the service life of the motor, then the air with heat flows out from the air outlet heat dissipation port 3051, and is rapidly gathered under the limit of the front side retainer ring 1011, not only can provide protection effect for the stator assembly, but also can gather flowing air to clean the motor output shaft 301, prevent the motor output shaft 301 from adhering dust partially, thereby affecting the connection tightness and firmness of the motor output shaft 301 and external mechanical parts, in addition, the space that safety cover 210 and motor stator 204 formed can provide the effect of protection to motor stator coil winding 205, protection piece 302 and bearing installation barrel 209 can provide good protective effect to antifriction bearing 206, effectively avoided the dust to adhere to on antifriction bearing 206 part and stator subassembly, good dustproof effect has consequently, the holistic life has been improved, and the design of mount 303, in the in-process of using, can dismantle and change motor output shaft 301 alone, have good wildcard, save maintenance cost, improve enterprise's production profit, when need dismantle and change motor output shaft 301, dismantle front side end cover 101, then unscrew mounting bolt 304, at this moment, motor output shaft 301 and motor rotor actuating cylinder 305 can be separated, thereby the convenience is changed motor output shaft 301, the permanent magnet synchronous motor of this patent substitutable speed reducer has driving efficiency relatively, and is small, the moment of torsion is big, rational in infrastructure, the design is reliable characteristics that can replace the speed reducer to put into use, the cost of whole preparation is little, the manufacturing degree of difficulty is low.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a permanent magnet synchronous motor of interchangeable speed reducer, includes motor housing (201), motor housing (201)'s lower part fixedly connected with motor mount pad (202), its characterized in that: the motor comprises a motor housing (201), and is characterized in that an air inlet and heat dissipation opening (2011) is formed in the rear side wall of the motor housing (201), a stator assembly is arranged in the motor housing (201), a rotor assembly is arranged on the inner side of the stator assembly, the stator assembly comprises a motor stator (204) arranged in the motor housing (201), a motor stator coil winding (205) is arranged on the motor stator (204), a bearing mounting cylinder (209) is fixedly connected to the rear side wall of the motor housing (201), a protective cover (210) is fixedly connected to the inner wall of the motor housing (201) and positioned on the outer side of the bearing mounting cylinder (209), and a rolling bearing (206) is arranged in the bearing mounting cylinder (209);
the rotor assembly comprises a motor output shaft (301) installed in a rolling bearing (206), a fixing frame (303) is fixedly connected to the motor output shaft (301), a fixing threaded hole (3031) is formed in the fixing frame (303), a motor rotor driving cylinder (305) is detachably connected to the fixing frame (303) and located at the fixing threaded hole (3031) through a mounting bolt (304), a plurality of rotor permanent magnet steel blocks (306) are fixedly connected to the outer circumferential surface of the motor rotor driving cylinder (305), the rotor permanent magnet steel blocks (306) are uniformly distributed in the circumference of N pole and S pole alternately, a protection sheet (302) is fixedly connected to the motor output shaft (301) and located at the rear of the fixing frame (303), and an air outlet heat dissipation opening (3051) is formed in the front side wall of the motor rotor driving cylinder (305).
2. A permanent magnet synchronous motor capable of replacing a speed reducer according to claim 1, wherein: the motor comprises a motor housing (201), a motor output shaft (301), a motor cover (1021) and a motor cover (207), wherein the rear end of the motor output shaft (301) penetrates through the rear side wall of the motor housing (201) and is fixedly connected with heat dissipation fan blades (307), rear side protecting covers (102) are arranged on the outer sides of the heat dissipation fan blades (307), protecting cover meshes (1021) are uniformly formed in the rear side protecting covers (102), the rear side surface of the motor housing (201) is fixedly connected with a rear side mounting edge (207), and the rear side protecting covers (102) are detachably connected with the rear side mounting edge (207) through screws.
3. A permanent magnet synchronous motor capable of replacing a speed reducer according to claim 1, wherein: the front part of the motor housing (201) is provided with a front side end cover (101), the rear side wall of the front side end cover (101) is fixedly connected with a front side check ring (1011), the front side surface of the motor housing (201) is fixedly connected with a front side installation edge (208), the front side installation edge 2 (08) is detachably connected with the front side end cover (101) through screws, the center of the front side end cover 1 (01) is provided with a through hole, and a gap of 1-2 mm is reserved between the through hole and a motor output shaft (301).
4. A permanent magnet synchronous motor capable of replacing a speed reducer according to claim 1, wherein: the upper part of the motor shell (201) is fixedly connected with a power box (203), and the wiring end of the motor stator coil winding (205) is electrically connected with the wiring end of the power box (203).
5. A permanent magnet synchronous motor capable of replacing a speed reducer according to claim 1, wherein: the number of the rolling bearings (206) is two, the rolling bearings are both positioned inside the bearing installation cylinder (209), the radius of the protection sheet (302) is the same as the outer diameter of the bearing installation cylinder (209), and the protection sheet (302) is in contact with the front side end face of the bearing installation cylinder (209).
6. A permanent magnet synchronous motor capable of replacing a speed reducer according to claim 1, wherein: the inner diameter of the protective cover (210) is equal to the outer radius of the motor rotor driving cylinder (305), a convex ring is arranged on the inner side of the protective cover (210), and the front side surface of the convex ring is in contact with the rear side end surface of the motor rotor driving cylinder (305).
7. A permanent magnet synchronous motor capable of replacing a speed reducer according to claim 3, wherein: the air inlet heat dissipation opening (2011) is located at a gap between the protective cover (210) and the bearing installation cylinder (209), and the air outlet heat dissipation opening (3051) is located at the inner side of the front side check ring (1011).
8. A permanent magnet synchronous motor capable of replacing a speed reducer according to claim 1, wherein: the fixing frame (303) is cross-shaped, and the mounting bolt (304) is in threaded connection with the fixing threaded hole (3031).
CN202310553872.XA 2023-05-16 2023-05-16 Permanent magnet synchronous motor capable of replacing speed reducer Withdrawn CN116827033A (en)

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CN202310553872.XA CN116827033A (en) 2023-05-16 2023-05-16 Permanent magnet synchronous motor capable of replacing speed reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310553872.XA CN116827033A (en) 2023-05-16 2023-05-16 Permanent magnet synchronous motor capable of replacing speed reducer

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CN116827033A true CN116827033A (en) 2023-09-29

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Application publication date: 20230929