CN115395729A - Permanent magnet synchronous motor - Google Patents

Abstract

The invention belongs to the field of motors, especially a permanent magnet synchronous motor, aiming at the fact that the existing permanent magnet synchronous motors are difficult to dissipate the high temperature in time due to high load operation, and the heat dissipation net port of the motor is easily blocked by foreign objects. For the problem of affecting the service life of the motor, the following scheme is now proposed, which includes a base, the top of which is fixedly connected to the motor housing, a heat dissipation housing is installed on one side of the motor housing, and the inner wall of the motor housing A stator is provided, and a stator winding is arranged on the outside of the stator. A rotating shaft is arranged on the motor housing, and a rotor is sleeved on the outside of the rotating shaft. A plurality of permanent magnets are arranged on the outside of the rotor. The present invention can intermittently start the motor. There are a few additional auxiliary cooling vents to improve the efficiency of cooling, and it can clean up the foreign matter on the cooling port of the cooling case to avoid its obstruction and affect the cooling.

Description

Permanent Magnet Synchronous Motor

technical field

The invention relates to the technical field of motors, in particular to a permanent magnet synchronous motor.

Background technique

In the prior art, under the same design parameters, the volume of the permanent magnet synchronous motor is much smaller than that of other types of motors, so it also poses a severe test to its heat dissipation. In the small space inside the permanent magnet synchronous motor, if the heat generated cannot be dissipated in time, the internal temperature of the motor will gradually increase, which will cause the demagnetization of the permanent magnet in the rotor, affect the performance of the motor, and even burn out in severe cases Stator windings, damage the motor;

However, when the existing permanent magnet synchronous motor is used, it is difficult to dissipate the high temperature caused by high-load operation in time, and the heat dissipation network port of the motor is easily blocked by foreign objects, which affects the service life of the motor.

Contents of the invention

The purpose of the present invention is to solve the problem that the permanent magnet synchronous motor in the prior art is difficult to dissipate in time due to the high temperature caused by high-load operation, and the heat dissipation network port of the motor is easily blocked by foreign objects, which affects the service life of the motor. Disadvantages of the proposed permanent magnet synchronous motor.

In order to achieve the above object, the present invention adopts the following technical solutions:

The permanent magnet synchronous motor includes a base, the top of the base is fixedly connected with a motor housing, a heat dissipation housing is installed on one side of the motor housing, a stator is arranged on the inner wall of the motor housing, and the outer side of the stator is wound There are stator windings, the motor housing is provided with a rotating shaft, the outer side of the rotating shaft is covered with a rotor, the outer side of the rotor is provided with multiple permanent magnets, and the motor housing is provided with multiple auxiliary heat dissipation mechanisms. The first blade shaft is installed, and one end of the rotation shaft extends into the heat dissipation housing and is fixedly connected with one end of the rotation shaft. The outer fixed sleeve of the first blade shaft is provided with a first fan blade, and a cleaning mechanism, the cleaning mechanism cooperates with the first fan blade shaft, and the first fan blade cooperates with the auxiliary heat dissipation mechanism.

Preferably, the auxiliary heat dissipation mechanism includes a first groove opened on the inner wall of the motor housing, and a transmission cavity is opened in the motor housing, and a second fan blade shaft is rotatably installed in the transmission cavity, and the second fan blade shaft One end of the first ventilation pipe extends into the first groove and is fixedly connected with the second fan blade. A first ventilation pipe is arranged in the motor housing. One end of the first ventilation pipe is connected to the first groove, and the other end of the first ventilation pipe Extend into the cooling case.

Preferably, a first rotating rod is installed in the transmission cavity, the outer fixed sleeve of the first rotating rod is provided with a large gear, and the outer fixed sleeve of the second blade shaft is provided with a pinion, and the small gear meshes with the large gear , the small gear can drive the large gear to rotate and reduce the speed to increase the torque.

Preferably, the outer fixed sleeve of the first rotating rod is provided with a half gear, and the second rotating rod is installed in rotation in the transmission cavity, and one end of the second rotating rod is fixedly connected with the first gear, and the first gear is matched with the half gear A torsion spring is sheathed on the outside of the second rotating rod, and the torsion spring can drive the second rotating rod to rotate and reset.

Preferably, a first rotation slot is provided on the outside of the motor housing, and a rotation plate is installed in the first rotation slot, and one end of the second rotation rod extends into the first rotation slot and is fixedly connected with the rotation plate. An arc-shaped vent is opened on the board, and a second vent pipe is arranged on the motor housing. One end of the second vent pipe is connected to the first rotating slot, and the second vent pipe matches the arc-shaped vent.

Preferably, the cleaning mechanism includes a second rotation slot opened on the heat dissipation housing, a rotation block is installed in the second rotation slot, a third rotation rod is connected to the rotation block, and the outside of the third rotation rod is sleeved There are cleaning rollers.

Preferably, one side of the rotating block is provided with a second groove, the other end of the first blade shaft extends into the second groove and is fixedly connected with a second gear, and a fourth gear is rotatably installed in the second rotating groove. Rotating rod, one end of the fourth rotating rod is fixedly connected with a third gear, the third gear meshes with the second gear, the inner wall of the second groove is provided with a gear ring, the gear ring meshes with the third gear, and the second gear can The rotating block is driven to rotate by the third gear and the gear ring.

Preferably, one side of the heat dissipation housing is fixedly connected with a fixed ring, and an annular groove is formed on the inner wall of the fixed ring, and a bevel gear ring is arranged in the annular groove, and one end of the third rotating rod extends into the annular groove and is fixedly connected There are bevel gears, the bevel gears mesh with the bevel gear, and the bevel gear can make the revolving bevel gear rotate.

Compared with prior art, the beneficial effect of the present invention is:

1. In this scheme, the rotation shaft and the first fan shaft are matched with the first fan blade, the first ventilation pipe is matched with the first groove, and the second fan blade shaft is matched with the second fan blade, so that the first fan When the blade rotates, the airflow is introduced through the first ventilation pipe to dissipate heat in the motor housing, and the airflow can actively drive the second blade to rotate;

2. In this scheme, the half gear is matched with the first gear, the second rotating rod is matched with the torsion spring, and the rotating plate is matched with the second ventilation pipe through the arc-shaped vent, so that the second fan blade can rotate intermittently. The characteristic makes the rotating plate rotate, and makes the arc-shaped vent coincide with the second vent pipe, so that there are a few additional auxiliary cooling vents on the motor housing to improve the efficiency of heat dissipation;

3. In this scheme, the second gear and the third gear are matched with the gear ring, and the third rotating rod is matched with the bevel gear through the bevel gear, so that the cleaning roller rotates and cleans the foreign matter on the upper opening of the heat dissipation shell to avoid Its shielding affects heat dissipation;

When the motor is started, the present invention can add several additional auxiliary heat dissipation ventilation holes intermittently, so as to improve the heat dissipation efficiency, and can clean up the foreign matters on the upper and lower openings of the heat dissipation shell, so as to avoid its blocking and affect the heat dissipation.

Description of drawings

Fig. 1 is the structural representation of the permanent magnet synchronous motor that the present invention proposes;

Fig. 2 is the schematic diagram of enlarged structure at A place in Fig. 1 of the permanent magnet synchronous motor that the present invention proposes;

Fig. 3 is the schematic diagram of the enlarged structure at B in Fig. 1 of the permanent magnet synchronous motor proposed by the present invention;

Fig. 4 is the schematic diagram of enlarged structure at C in Fig. 1 of the permanent magnet synchronous motor proposed by the present invention;

Fig. 5 is a schematic structural diagram of the rotating plate of the permanent magnet synchronous motor proposed by the present invention.

In the figure: 1. base; 2. motor housing; 3. heat dissipation housing; 4. stator; 5. rotating shaft; 6. rotor; 7. first blade shaft; 8. first fan blade; 9. The second blade shaft; 10, the second blade; 11, the first rotating rod; 12, the large gear; 13, the pinion; 14, the half gear; 15, the second rotating rod; 16, the first gear; 17, Torsion spring; 18, rotating plate; 19, arc vent; 20, rotating block; 21, third rotating rod; 22, cleaning roller; 23, second gear; 24, fourth rotating rod; 25, third gear ; 26, gear ring; 27, fixed ring; 28, bevel gear ring; 29, bevel gear; 30, stator winding; 31, permanent magnet; 32, transmission cavity.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Embodiment one

Referring to Figures 1-5, the permanent magnet synchronous motor includes a base 1, the top of the base 1 is fixedly connected with a motor housing 2 by welding, one side of the motor housing 2 is installed with a heat dissipation housing 3, and the motor housing 2 The inner wall of the stator 4 is provided with a stator 4, and the outer side of the stator 4 is provided with a stator winding 30. The motor housing 2 is provided with a rotating shaft 5, and the outer side of the rotating shaft 5 is provided with a rotor 6, and the outer side of the rotor 6 is provided with a plurality of The permanent magnet 31, the motor housing 2 is provided with a plurality of auxiliary heat dissipation mechanisms, the first fan blade shaft 7 is rotatably installed in the heat dissipation housing 3, and one end of the rotation shaft 5 extends into the heat dissipation housing 3 and is connected with the rotation shaft 5 One end of the first blade shaft 7 is fixedly connected, the outer side of the first blade shaft 7 is provided with a first fan blade 8 through a welding fixed sleeve, and a cleaning mechanism is arranged on one side of the heat dissipation housing 3, and the cleaning mechanism is matched with the first blade shaft 7. The fan blade 8 cooperates with the auxiliary heat dissipation mechanism.

In this embodiment, the auxiliary heat dissipation mechanism includes a first groove opened on the inner wall of the motor housing 2, and a transmission cavity 32 is opened in the motor housing 2, and the second blade shaft 9 is rotatably installed in the transmission cavity 32. , one end of the second blade shaft 9 extends into the first groove and is fixedly connected with the second blade 10 by welding, a first ventilation pipe is arranged in the motor housing 2, and one end of the first ventilation pipe is connected to the first The groove is connected, and the other end of the first ventilation pipe extends into the heat dissipation housing 3 .

In this embodiment, a first rotating rod 11 is installed in the transmission cavity 32 for rotation, the outer side of the first rotating rod 11 is provided with a large gear 12 through a welding fixed sleeve, and the outer side of the second blade shaft 9 is provided with a small gear through a welding fixed sleeve. Gear 13, the pinion gear 13 is meshed with the bull gear 12, the pinion gear 13 can drive the bull gear 12 to rotate and reduce the speed to increase the torque.

In this embodiment, the outer side of the first rotating rod 11 is fixedly covered with a half gear 14 through welding, and the second rotating rod 15 is rotatably installed in the transmission chamber 32, and one end of the second rotating rod 15 is fixedly connected with the first gear through welding. 16. The first gear 16 cooperates with the half gear 14, and a torsion spring 17 is sleeved on the outside of the second rotating rod 15, and the torsion spring 17 can drive the second rotating rod 15 to rotate and reset.

In this embodiment, the outer side of the motor housing 2 is provided with a first rotating groove, and a rotating plate 18 is installed in the first rotating groove. One end of the second rotating rod 15 extends into the first rotating groove and connects with the rotating plate 18. Fixedly connected by welding, an arc-shaped vent 19 is provided on the rotating plate 18, a second vent pipe is provided on the motor housing 2, one end of the second vent pipe is connected with the first rotating groove, and the second vent pipe is connected with the first rotary slot. Arc air vent 19 matches.

In this embodiment, the cleaning mechanism includes a second rotating groove provided on the heat dissipation housing 3, a rotating block 20 is installed in the second rotating groove, and a third rotating rod 21 is connected to the rotating block 20, and the third rotating rod The outside of 21 is sheathed with cleaning roller 22 .

In this embodiment, a second groove is provided on one side of the rotating block 20, and the other end of the first blade shaft 7 extends into the second groove and is fixedly connected with a second gear 23 by welding. A fourth rotating rod 24 is installed in rotation, and one end of the fourth rotating rod 24 is fixedly connected with a third gear 25 by welding, the third gear 25 is meshed with the second gear 23, and the inner wall of the second groove is provided with a gear ring 26, The gear ring 26 meshes with the third gear 25 , and the second gear 23 can drive the rotary block 20 to rotate through the third gear 25 and the gear ring 26 .

In this embodiment, one side of the heat dissipation housing 3 is fixedly connected with a fixed ring 27 by welding, and an annular groove is opened on the inner wall of the fixed ring 27, and a bevel gear ring 28 is arranged in the annular groove, and one end of the third rotating rod 21 extends A bevel gear 29 is fixedly connected to the annular groove by welding. The bevel gear 29 meshes with the bevel gear 28. The bevel gear 28 can make the revolving bevel gear 29 rotate.

In this embodiment, when in use, the rotating shaft 5 can drive the first fan shaft 7 to rotate and the first fan blade 8 to rotate, and the first fan blade 8 can drive the air flow to interact when rotating, so as to achieve the motor The purpose of heat dissipation in the casing 2, and at the same time, part of the airflow in the motor casing 2 can flow through the first ventilation pipe, and the airflow can drive the second fan blade 10 to rotate during the flow process, and the second fan blade 10 can pass through the second The blade shaft 9 drives the small gear 13 to rotate, the small gear 13 can drive the large gear 12 to rotate and reduce the speed to increase the torque, the large gear 12 drives the half gear 14 to rotate through the first rotating rod 11, and the half gear 14 can intermittently drive the first gear 16 rotates, the first gear 16 can drive the rotating plate 18 to rotate through the second rotating rod 15 and deform the torsion spring 17, so that the arc-shaped vent 19 on the rotating plate 18 can overlap with the second vent pipe intermittently, thereby achieving The purpose of adding a few additional auxiliary cooling vents is to improve the efficiency of heat dissipation. When in use, the second ventilation pipe opening can be blocked by the plate 18 to prevent foreign matter from entering. At the same time, the first fan shaft 7 also drives the second The gear 23 rotates, and the second gear 23 drives the rotating block 20 to rotate through the third gear 25 and the gear ring 26. The rotating block 20 can drive the third rotating rod 21 to revolve, so that the third rotating rod 21 can drive the bevel gear 29 to rotate on the bevel ring gear. Rotate on 28, so that the third rotating rod 21 can drive the cleaning roller 22 to rotate, so that it can clean up the blocking foreign matter on the upper opening of the heat dissipation housing 3, so as to avoid its influence on heat dissipation.

Embodiment two

The difference from the first embodiment is that: the bottom of the base 1 is provided with a plurality of rubber feet to improve stability and reduce vibration.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (8)

1. Permanent magnet synchronous machine, including base (1), a serial communication port, the top fixedly connected with motor casing (2) of base (1), heat dissipation casing (3) are installed to one side of motor casing (2), be provided with stator (4) on the inner wall of motor casing (2), the outside of stator (4) is around being equipped with stator winding (30), be provided with rotation axis (5) on motor casing (2), the outside cover of rotation axis (5) is equipped with rotor (6), the outside of rotor (6) is provided with a plurality of permanent magnets (31), be provided with a plurality of supplementary heat dissipation mechanisms on motor casing (2), first fan blade axle (7) is installed to heat dissipation casing (3) internal rotation, the one end of rotation axis (5) extends to in heat dissipation casing (3) and with the one end fixed connection of rotation axis (5), the fixed cover in the outside of first fan blade axle (7) is equipped with first flabellum (8), heat dissipation casing (3) one side is provided with clearance mechanism, clearance mechanism cooperatees with first fan blade axle (7), first fan blade (8) and supplementary heat dissipation mechanism cooperate.

2. The permanent magnet synchronous motor according to claim 1, wherein the auxiliary heat dissipation mechanism comprises a first groove formed in the inner wall of the motor housing (2), a transmission cavity (32) is formed in the motor housing (2), a second fan blade shaft (9) is rotatably mounted in the transmission cavity (32), one end of the second fan blade shaft (9) extends into the first groove and is fixedly connected with a second fan blade (10), a first ventilation pipe is arranged in the motor housing (2), one end of the first ventilation pipe is communicated with the first groove, and the other end of the first ventilation pipe extends into the heat dissipation housing (3).

3. The permanent magnet synchronous motor according to claim 2, wherein the transmission cavity (32) is rotatably provided with a first rotating rod (11), a bull gear (12) is fixedly sleeved on the outer side of the first rotating rod (11), a pinion gear (13) is fixedly sleeved on the outer side of the second fan blade shaft (9), and the pinion gear (13) is meshed with the bull gear (12).

4. The permanent magnet synchronous motor according to claim 3, wherein a half gear (14) is fixedly sleeved on the outer side of the first rotating rod (11), a second rotating rod (15) is rotatably installed in the transmission cavity (32), a first gear (16) is fixedly connected to one end of the second rotating rod (15), the first gear (16) is matched with the half gear (14), and a torsion spring (17) is sleeved on the outer side of the second rotating rod (15).

5. The permanent magnet synchronous motor according to claim 4, wherein a first rotating groove is formed in the outer side of the motor housing (2), a rotating plate (18) is rotatably mounted in the first rotating groove, one end of the second rotating rod (15) extends into the first rotating groove and is fixedly connected with the rotating plate (18), an arc-shaped ventilation opening (19) is formed in the rotating plate (18), a second ventilation pipe is arranged on the motor housing (2), one end of the second ventilation pipe is communicated with the first rotating groove, and the second ventilation pipe is matched with the arc-shaped ventilation opening (19).

6. The permanent magnet synchronous motor according to claim 5, wherein the cleaning mechanism comprises a second rotating groove arranged on the heat dissipation shell (3), a rotating block (20) is rotatably mounted in the second rotating groove, a third rotating rod (21) is rotatably connected to the rotating block (20), and a cleaning roller (22) is sleeved on the outer side of the third rotating rod (21).

7. The permanent magnet synchronous motor according to claim 6, wherein a second groove is formed in one side of the rotating block (20), the other end of the first fan blade shaft (7) extends into the second groove and is fixedly connected with a second gear (23), a fourth rotating rod (24) is rotatably mounted in the second rotating groove, a third gear (25) is fixedly connected to one end of the fourth rotating rod (24), the third gear (25) is meshed with the second gear (23), a gear ring (26) is arranged on the inner wall of the second groove, and the gear ring (26) is meshed with the third gear (25).

8. The permanent magnet synchronous motor according to claim 7, wherein a fixing ring (27) is fixedly connected to one side of the heat dissipation housing (3), an annular groove is formed in an inner wall of the fixing ring (27), a bevel gear ring (28) is disposed in the annular groove, one end of the third rotating rod (21) extends into the annular groove and is fixedly connected with a bevel gear (29), and the bevel gear (29) is engaged with the bevel gear ring (28).

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