High-torque low-loss robot joint motor

Abstract

The invention provides a high-torque low-loss robot joint motor which comprises a cooling assembly, and the cooling assembly comprises a rear end cover, an exhaust hole, a flow guide fan, a driving cover, two electric push rods, a push ring, a guide rod, a driving toothed plate, a gear ring, a limiting sleeve and a motor shaft. And the exhaust holes are uniformly formed in the rear surface of the rear end cover. The motor shaft drives the driving cover to rotate, in the movement process of the flow guide fan, negative pressure can be generated at the exhaust hole, at the moment, external air flows into the air inlet channel from the air inlet holes in the two positions and then flows into the motor through the connecting hole, and finally heat of the motor is discharged under suction of a negative pressure area. The motor can be maintained in a relatively low and stable working temperature range, eddy current loss and magnetic hysteresis loss which are aggravated due to high temperature can be remarkably reduced, temperature reduction means that the degree of resistivity change and magnetic performance deterioration is reduced, and then the two kinds of loss are effectively controlled.

Description

Technical Field

[0001] The present invention relates to a robot joint motor, in particular to a high-torque and low-loss robot joint motor, belonging to the technical field of joint motors. Background Art

[0002] Axial flux motors are typically used for motors in robotic joints because of their high torque. Their efficient magnetic surface area allows them to deliver greater torque within a given motor volume. High torque is a key performance characteristic of motors in robotic joints, as it meets the high power output requirements of complex joint movements.

[0003] Axial flux motors have high working efficiency, but they also inevitably produce losses, including eddy current losses and hysteresis losses; When the rotor rotates continuously in the magnetic field, the magnetic flux in its environment will change periodically. This dynamic change of magnetic flux will induce an induced electromotive force inside the rotor conductor according to Faraday's law of electromagnetic induction. These induced electromotive forces will then drive the current to circulate inside the rotor material. The circular current formed inside the conductor is called eddy current. When the eddy current flows in the conductor, Joule heat is generated due to the resistance of the conductor itself, causing energy to dissipate in the form of heat energy. This energy loss is called eddy current loss. Eddy current loss not only directly causes the rotor components to heat up, but also causes the overall temperature of the motor to rise. The excessively high operating temperature inside the motor will in turn affect the operating efficiency of the motor, resulting in reduced efficiency in the process of converting electrical energy into mechanical energy, thereby increasing the ineffective consumption of electrical energy. Hysteresis loss is another form of energy loss closely related to magnetic field changes. It originates from the hysteresis effect of the motor core material under the influence of a magnetic field. When the strength or direction of the motor's magnetic field changes, the microscopic magnetic domains within the core undergo a process of rearrangement and rotation. This dynamic change at the microscopic scale is accompanied by energy dissipation, which is released as heat energy, causing the core to heat up. Similar to eddy current loss, hysteresis loss also causes the motor temperature to rise, further reducing the motor's operating efficiency. As the operating temperature of an axial flux motor gradually increases, the physical properties of its internal conductor and core materials will also change. In particular, the resistivity of the material tends to increase with increasing temperature, which will further aggravate the generation of eddy current losses. At the same time, high temperature will also have an adverse effect on the magnetic properties of the core material, such as reducing its saturation magnetic induction intensity and increasing the area of ​​the hysteresis loop. These changes will lead to increased hysteresis losses. Therefore, the rise in motor temperature forms a vicious cycle, continuously aggravating eddy current losses and hysteresis losses, and also posing a serious threat to the overall performance and efficiency of the motor. Therefore, a high-torque and low-loss robot joint motor is proposed. Summary of the Invention

[0004] In view of this, the present invention provides a high-torque, low-loss robot joint motor to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of the embodiment of the present invention is achieved as follows: a high-torque, low-loss robot joint motor includes a cooling assembly, the cooling assembly including a rear end cover, an exhaust hole, a guide fan, a drive cover, two electric push rods, a push ring, a guide rod, a drive gear plate, a gear ring, a limit sleeve and a motor shaft; The exhaust holes are evenly opened on the rear surface of the rear end cover, the drive cover is fixedly connected to the outer side wall of the motor shaft, the rotating shaft of the guide fan is rotatably connected to the inner side wall of the limiting sleeve, the limiting sleeve is evenly fixedly connected to the inside of the drive cover, the gear ring is fixedly connected to the bottom of the outer side wall of the rotating shaft of the guide fan, the driving gear plate is evenly fixedly connected to the rear surface of the push ring, the two ends of the guide rod are symmetrically fixedly connected to the inner front wall and the inner rear wall of the drive cover, the push ring is slidably connected to the outer side wall of the guide rod, the two electric push rods are symmetrically installed on the front surface of the drive cover, and the telescopic shaft of the electric push rod is fixedly connected to the push ring.

[0006] Further preferably, the gear ring is located inside the drive cover, the outer side wall of the drive gear plate is meshedly connected to the outer side wall of the gear ring, and the guide fans are evenly distributed outside the drive cover.

[0007] Further preferably, the cooling assembly further includes a sealing cover and a flow guide cover; The sealing cover is fixedly connected to the rear surface of the rear end cover, the air guide cover is fixedly connected to the rear surface of the sealing cover, the drive cover and the air guide fan are both located inside the air guide cover, and a protective net is fixedly connected to the rear surface of the air guide cover.

[0008] Further preferably, the cooling assembly further comprises two air inlet channels, a connecting hole, a mounting ring, a fixing column and an air inlet hole; The two air intake channels are symmetrically opened inside the motor shaft, the air intake holes are respectively opened on the rear end face of the motor shaft and the outer side wall of the motor shaft, the connecting hole is opened on the outer side wall of the motor shaft, the mounting ring is fixedly connected to the outer side wall of the motor shaft, and the fixing column is symmetrically fixedly connected to the outer side wall of the motor shaft.

[0009] Further preferably, the air inlet hole is communicated with the air inlet channel, and the connecting hole is communicated with the air inlet channel.

[0010] Further preferably, a rotor assembly is installed on the outer side wall of the motor shaft, and the rotor assembly includes a connecting sleeve, a connecting ring, a slot, a magnetic steel, two rotor disks, a connecting seat and a connecting plate; The two rotor disks are fixedly connected via the connecting seat, the connecting sleeve is coaxially arranged with the rotor disk, the connecting sleeve is fixedly connected to the connecting seat via the connecting plate, the connecting ring is fixedly connected to the outer wall of the connecting sleeve, the slot is symmetrically opened on the inner wall of the connecting sleeve, and the magnetic steel is embedded in the interior of the rotor disk.

[0011] Further preferably, the outer side wall of the motor shaft is slidably connected to the inner side wall of the connecting sleeve, and the outer side wall of the fixing column is slidably connected to the inner side wall of the slot.

[0012] Further preferably, the front surface of the connecting ring is in contact with the rear surface of the mounting ring, and the connecting ring is fixedly connected to the mounting ring by bolts.

[0013] Further preferably, the front surface of the rear end cover is fixedly connected to the front end cover by bolts, the interior of the rear end cover and the interior of the front end cover are both fixedly connected to the stator core, and the interior of the stator core is wound with a stator winding.

[0014] Further preferably, the rotor assembly is located between the two stator cores, and the motor shaft is coaxially mounted inside the front end cover and inside the rear end cover through two bearings.

[0015] The embodiment of the present invention adopts the above technical solution, which has the following advantages: 1. The present invention drives the drive cover to rotate through the motor shaft, the drive cover drives the limit sleeve, and the limit sleeve drives the guide fan. During the movement of the guide fan, a negative pressure area can be generated at the exhaust hole. At this time, the external air flows into the air intake channel from the air intake holes at two positions respectively, and then flows into the interior of the motor through the connecting hole. Finally, under the attraction of the negative pressure area, it flows from the exhaust hole to between the sealing cover and the rear end cover, and then is discharged from the guide cover, thereby realizing the discharge of motor heat. It can not only maintain the motor within a relatively low and stable operating temperature range, but also significantly reduce the eddy current loss and hysteresis loss aggravated by high temperature. The temperature reduction means that the degree of resistivity change and magnetic property deterioration is reduced, thereby effectively controlling these two losses. Therefore, the cooling component can not only significantly improve its operating efficiency and stability, but also effectively reduce the additional consumption of electric energy, thereby achieving more energy-saving and efficient operating performance.

[0016] 2. During the heat dissipation process, the present invention monitors the operating temperature of the motor in real time and accurately through the temperature sensor inside the motor. When it is detected that the motor temperature has risen, the temperature sensor immediately feeds back the information to the control system. The control system intelligently calculates the guide fan angle that best suits the current working conditions based on the received temperature data, and adjusts the angle of the guide fan accordingly. At this time, the push ring is pushed by the electric push rod, and the push ring drives the drive gear plate, which drives the gear ring through the teeth, thereby causing the gear ring to rotate, and the gear ring drives the guide fan to rotate, thereby adjusting the angle of the guide fan, ensuring the heat dissipation effect and avoiding overcooling of the motor.

[0017] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a structural diagram of a high-torque, low-loss robot joint motor of the present invention; Figure 2 This is a schematic diagram of the connection between the sealing cover and the rear end cover of the present invention; Figure 3 This is a schematic diagram of the structural decomposition of a high-torque and low-loss robot joint motor of the present invention; Figure 4 This is a schematic diagram of the connection between the rotor assembly and the motor shaft of the present invention; Figure 5 This is a structural diagram of the connecting sleeve of the present invention; Figure 6 Schematic diagram of the air intake channel inside the motor shaft of the present invention; Figure 7 This is a schematic diagram of the connection between two rotor disks of the present invention; Figure 8 This is a structural diagram of the cooling component of the present invention; Figure 9 This is a schematic diagram of the connection between the guide fan and the drive cover of the present invention; Figure 10 This is a schematic diagram of the connection between the driving gear plate and the push ring of the present invention; Figure 11Schematic diagram of the meshing connection between the driving gear plate and the gear ring of the present invention; Figure 12 Schematic diagram of the air circulation path during the operation of the cooling component of the present invention.

[0020] Figure numerals: 101, cooling assembly; 11, rear end cover; 12, exhaust hole; 13, sealing cover; 14, air deflector; 15, protective net; 16, air deflector fan; 17, drive cover; 18, electric push rod; 19, push ring; 20, guide rod; 21, drive gear plate; 22, gear ring; 23, limit sleeve; 24, motor shaft; 25, air intake channel; 26, connecting hole; 27, mounting ring; 28, fixing column; 29, air intake hole; 301, rotor assembly; 31, connecting sleeve; 32, connecting ring; 33, slot; 34, magnet; 35, rotor disk; 36, connecting seat; 37, connecting plate; 41, front end cover; 42, stator core; 43, stator winding. DETAILED DESCRIPTION

[0021] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0022] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the existing technology, as the operating temperature of the axial flux motor gradually increases, the physical properties of the conductor and core material inside it will also change. In particular, the resistivity of the material tends to increase with increasing temperature, which will further aggravate the generation of eddy current loss. At the same time, high temperature will also have an adverse effect on the magnetic properties of the core material, such as reducing its saturation magnetic induction intensity, increasing the area of ​​the hysteresis loop, etc. These changes will lead to an increase in hysteresis loss. Therefore, the rise in motor temperature forms a vicious circle, continuously aggravating eddy current loss and hysteresis loss, and also posing a serious threat to the overall performance and efficiency of the motor.

[0024] like Figures 1-12 As shown, an embodiment of the present invention provides a high-torque and low-loss robot joint motor, including a cooling component 101. The cooling component 101 is provided in the axial flux motor to promptly and effectively discharge the heat generated inside the motor during the operation of the motor; When the axial flux motor is in operation, a large amount of heat energy is inevitably generated inside the motor due to eddy current loss and hysteresis loss, causing the motor temperature to rise. The cooling component 101 can quickly discharge this heat to prevent it from accumulating inside the motor. The cooling component 101 uses the guide fan 16 to enhance air flow, thereby ensuring that the heat can be quickly and continuously removed. The cooling component 101 not only maintains the motor within a relatively low and stable operating temperature range, but also significantly reduces eddy current loss and hysteresis loss that are exacerbated by high temperature. This is because both eddy current loss and hysteresis loss are closely related to the operating temperature of the motor. Lowering the temperature means reducing the degree of resistivity change and magnetic property deterioration, thereby effectively controlling these two losses. Therefore, through the cooling component 101, the axial flux motor can not only significantly improve its operating efficiency and stability, but also effectively reduce the additional consumption of electric energy, thereby achieving more energy-saving and efficient operating performance; The cooling assembly 101 includes a rear end cover 11, an exhaust hole 12, a guide fan 16, a drive cover 17, two electric push rods 18, a push ring 19, a guide rod 20, a drive gear plate 21, a gear ring 22, a limit sleeve 23 and a motor shaft 24; The exhaust holes 12 are evenly opened on the rear surface of the rear end cover 11. The exhaust holes 12 are used to discharge the heat inside the motor. The drive cover 17 is fixedly connected to the outer wall of the motor shaft 24. The rotating shaft of the guide fan 16 is rotatably connected to the inner wall of the limiting sleeve 23. The limiting sleeve 23 is evenly fixedly connected to the inside of the drive cover 17. When the motor is working, the motor shaft 24 drives the drive cover 17 to rotate, the drive cover 17 drives the limiting sleeve 23, and the limiting sleeve 23 drives the guide fan 16. During the movement of the guide fan 16, a negative pressure area can be generated at the exhaust hole 12, thereby dissipating the heat inside the motor. The gear ring 22 is fixedly connected to the bottom of the outer side wall of the rotating shaft of the guide fan 16, and the driving gear plate 21 is evenly fixedly connected to the rear surface of the push ring 19. The two ends of the guide rod 20 are symmetrically fixedly connected to the inner front wall and the inner rear wall of the drive cover 17, and the push ring 19 is slidably connected to the outer side wall of the guide rod 20. The position of the push ring 19 can be guided by the guide rod 20. The two electric push rods 18 are symmetrically installed on the front surface of the drive cover 17. The telescopic shaft of the electric push rod 18 is fixedly connected to the push ring 19. The gear ring 22 is located inside the drive cover 17, and the outer side wall of the driving gear plate 21 is meshed with the outer side wall of the gear ring 22. The guide fans 16 are evenly distributed on the outside of the drive cover 17. The push ring 19 is pushed by the electric push rod 18, and the push ring 19 drives the driving gear plate 21. The driving gear plate 21 drives the gear ring 22 through the teeth, thereby making the gear ring 22 rotate, and the gear ring 22 drives the guide fan 16 to rotate, thereby adjusting the angle of the guide fan 16; By adjusting the angle of the guide fan 16 according to the temperature of the motor, the air flow rate entering the motor can be adjusted according to the actual heat dissipation requirements. This adaptive adjustment mechanism not only ensures that the motor can obtain the best heat dissipation effect under any operating conditions, but also effectively avoids energy waste caused by overcooling. When the axial flux motor is working, the motor shaft 24 drives the drive cover 17, and the drive cover 17 drives the guide fan 16 to rotate through the limit sleeve 23. When the guide fan 16 rotates, a negative pressure is formed at the exhaust hole 12, which can effectively discharge the heat accumulated inside the motor through the exhaust hole 12, thereby effectively reducing the operating temperature of the motor and ensuring its stable and reliable operation. A high-precision temperature sensor is provided inside the motor for real-time and accurate monitoring of the operating temperature of the motor. When it is detected that the motor temperature has risen, the temperature sensor immediately feeds back the information to the control system. The control system intelligently calculates the angle of the guide fan 16 that is most suitable for the current working conditions based on the received temperature data, and adjusts the angle of the guide fan 16 accordingly. By adjusting the angle of the guide fan 16, overcooling of the motor can be avoided. Too low a temperature may cause condensation inside the motor, resulting in a decrease in insulation performance. The angle of the guide fan 16 is directly related to the wind speed, which is based on the principles of fluid mechanics. When the motor shaft 24 drives the guide fan 16 to rotate, the angle of the guide fan 16 determines the direction and magnitude of the force applied to the air on the surface of the fan blades. If the fan blade angle is large, the air obtains a greater tangential velocity under the push of the fan blades, making the fan blown out a faster wind speed; conversely, if the fan blade angle is small, the tangential thrust on the air becomes smaller, and the wind speed also decreases accordingly. For example, at the same motor speed, the wind speed blown out by a fan with a 15° blade angle is significantly lower than that of a fan with a 30° blade angle. By adjusting the angle of the guide fan 16, the wind speed can be adjusted according to the actual operating conditions of the motor. For example, when the motor load is low and the heat generation is low, the angle of the guide fan 16 can be appropriately reduced to reduce the wind speed, reduce the cooling air volume, and avoid overcooling. When the motor load increases and the temperature rises, the angle of the guide fan 16 can be increased to increase the wind speed, enhance the cooling effect, and ensure that the motor operates within the appropriate temperature range.

[0025] In one embodiment, the cooling assembly 101 further includes a sealing cover 13 and a flow guide cover 14; The sealing cover 13 is fixedly connected to the rear surface of the rear end cover 11, and a gap for air flow is left between the sealing cover 13 and the rear end cover 11. The air deflector 14 is fixedly connected to the rear surface of the sealing cover 13. The drive cover 17 and the air deflector fan 16 are both located inside the air deflector 14. The rear surface of the air deflector 14 is fixedly connected with a protective net 15, which can play a protective role to avoid accidentally touching the high-speed rotating air deflector fan 16.

[0026] In one embodiment, the cooling assembly 101 further includes two air inlet passages 25 , a connecting hole 26 , a mounting ring 27 , a fixing post 28 , and an air inlet hole 29 ; Two air intake channels 25 are symmetrically opened inside the motor shaft 24, the air intake holes 29 are respectively opened on the rear end surface of the motor shaft 24 and the outer side wall of the motor shaft 24, the connecting hole 26 is opened on the outer side wall of the motor shaft 24, the mounting ring 27 is fixedly connected to the outer side wall of the motor shaft 24, and the fixing column 28 is symmetrically fixedly connected to the outer side wall of the motor shaft 24. The air intake holes 29 are connected to the air intake channels 25, and the connecting holes 26 are connected to the air intake channels 25. When the motor is working, negative pressure is generated at the exhaust hole 12. At this time, external air flows into the air intake channel 25 from the air intake holes 29 at the two positions, and then flows into the interior of the motor through the connecting hole 26. Finally, under the attraction of the negative pressure area, it flows from the exhaust hole 12 to between the sealing cover 13 and the rear end cover 11, and then is discharged from the air guide cover 14, thereby realizing the discharge of heat from the motor. Good heat dissipation helps maintain the motor in optimal working condition, thereby improving its torque density, which means that the motor can output greater torque and meet higher performance requirements within the same volume and weight.

[0027] In order to solve the problems existing in the prior art, the embodiment of the present invention provides a high-torque and low-loss robot joint motor and solves the problems through the above technical solutions: The drive cover 17 is driven by the motor shaft 24, and the drive cover 17 drives the guide fan 16 to rotate through the limit sleeve 23. When the guide fan 16 rotates, a negative pressure is formed at the exhaust hole 12, which can effectively discharge the heat accumulated inside the motor through the exhaust hole 12. During the heat dissipation process, the control system calculates the angle of the guide fan 16 that is most suitable for the current working conditions based on the temperature data of the motor, and adjusts the angle of the guide fan 16 accordingly. The push ring 19 is pushed by the electric push rod 18, and the push ring 19 drives the drive gear plate 21. The drive gear plate 21 drives the gear ring 22 through the teeth, so that the gear ring 22 is rotated, and the gear ring 22 drives the guide fan 16 to rotate, and then the angle of the guide fan 16 can be adjusted to ensure the heat dissipation effect while avoiding excessive cooling of the motor.

[0028] In one embodiment, a rotor assembly 301 is mounted on the outer side wall of the motor shaft 24. The rotor assembly 301 adopts a hollow structure, which has the following advantages: The overall weight of the rotor assembly 301 is reduced, which not only reduces the overall load on the motor, but also reduces the inertia of the moving parts, making the motor respond more quickly. In addition, the lightweight design uses less material and reduces production costs. The hollow design enables the rotor to achieve a more compact structural layout while maintaining sufficient rigidity, which helps integrate more electromagnetic coils or magnetic poles within a limited volume, thereby increasing torque output; The hollow structure provides more air circulation channels, which helps improve the heat dissipation performance of the motor, prevents the motor from overheating, maintains its long-term stable operation, and indirectly improves the torque density; Furthermore, the hollow lightweight design reduces friction and, in conjunction with the heat dissipation effect of the cooling component 101, reduces energy efficiency loss due to overheating. This design also provides an additional heat dissipation path, helping to evenly distribute heat within the motor, reducing the concentration of thermal stress, thereby improving the reliability and service life of the motor. The rotor assembly 301 includes a connecting sleeve 31, a connecting ring 32, a slot 33, a magnet 34, two rotor discs 35, a connecting seat 36 and a connecting plate 37; The two rotor disks 35 are fixedly connected by a connecting seat 36, the connecting sleeve 31 is coaxially arranged with the rotor disk 35, the connecting sleeve 31 is fixedly connected to the connecting seat 36 through a connecting plate 37, the connecting ring 32 is fixedly connected to the outer wall of the connecting sleeve 31, the slot 33 is symmetrically opened on the inner wall of the connecting sleeve 31, the magnet 34 is embedded in the inside of the rotor disk 35, the outer wall of the motor shaft 24 is slidably connected to the inner wall of the connecting sleeve 31, and the outer wall of the fixing column 28 is slidably connected to the inner wall of the slot 33, so that the motor shaft 24 can be assembled with the connecting sleeve 31 through the fixing column 28. By designing the rotor into an assembled structure, it is convenient to repair and replace parts. For example, when the motor rotor fails, only the problematic part needs to be replaced instead of the entire rotor, which reduces the maintenance cost.

[0029] In one embodiment, the front surface of the connecting ring 32 is attached to the rear surface of the mounting ring 27 , and the connecting ring 32 is fixedly connected to the mounting ring 27 by bolts. The connecting ring 32 and the mounting ring 27 can increase the stability of the motor rotor.

[0030] In one embodiment, the front surface of the rear end cover 11 is fixedly connected to the front end cover 41 by bolts, and the interior of the rear end cover 11 and the interior of the front end cover 41 are fixedly connected to the stator core 42, and the interior of the stator core 42 is wound with a stator winding 43. The rotor assembly 301 is located between the two stator cores 42, and the motor shaft 24 is coaxially installed in the interior of the front end cover 41 and the interior of the rear end cover 11 through two bearings. When the axial flux motor is working, the stator winding 43 is energized. At this time, magnetic fields are generated on both sides of the motor rotor and act on the magnets 34. The magnetic field interacts with the magnetic field generated by the magnets 34 to generate torque, causing the rotor of the axial flux motor to rotate, and the rotor drives the motor shaft 24, thereby realizing power output.

[0031] When the present invention is working: the stator winding 43 is energized, and magnetic fields are generated on both sides of the motor rotor and act on the magnetic steel 34. The magnetic field interacts with the magnetic field generated by the magnetic steel 34 to generate torque, causing the rotor of the axial magnetic flux motor to rotate, and the rotor drives the motor shaft 24, thereby realizing power output. The motor shaft 24 drives the drive cover 17 to rotate, and the drive cover 17 drives the limiting sleeve 23, and the limiting sleeve 23 drives the guide fan 16. During the movement of the guide fan 16, a negative pressure area can be generated at the exhaust hole 12. At this time, the external air flows into the air intake channel 25 from the air intake holes 29 at two positions respectively, and then flows into the interior of the motor through the connecting hole 26. Finally, under the attraction of the negative pressure area, it flows from the exhaust hole 12 to between the sealing cover 13 and the rear end cover 11, and then Then it is discharged from the air deflector 14, thereby realizing the discharge of motor heat. During the heat dissipation process, the operating temperature of the motor is monitored in real time and accurately by the temperature sensor inside the motor. When it is detected that the motor temperature has risen, the temperature sensor immediately feeds back the information to the control system. The control system intelligently calculates the angle of the guide fan 16 that is most suitable for the current working conditions based on the received temperature data, and adjusts the angle of the guide fan 16 accordingly. At this time, the push ring 19 is pushed by the electric push rod 18, and the push ring 19 drives the drive gear plate 21. The drive gear plate 21 drives the gear ring 22 through the teeth, thereby causing the gear ring 22 to rotate, and the gear ring 22 drives the guide fan 16 to rotate, and then the angle of the guide fan 16 can be adjusted to ensure the heat dissipation effect while avoiding overcooling of the motor.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A high-torque, low-loss robot joint motor, comprising a cooling component (101), characterized in that: The cooling assembly (101) includes a rear end cover (11), an exhaust hole (12), a guide fan (16), a drive cover (17), two electric push rods (18), a push ring (19), a guide rod (20), a drive gear plate (21), a gear ring (22), a limit sleeve (23) and a motor shaft (24); The exhaust holes (12) are evenly opened on the rear surface of the rear end cover (11), the drive cover (17) is fixedly connected to the outer side wall of the motor shaft (24), the rotating shaft of the guide fan (16) is rotatably connected to the inner side wall of the limiting sleeve (23), the limiting sleeve (23) is evenly fixedly connected to the inside of the drive cover (17), the gear ring (22) is fixedly connected to the bottom of the outer side wall of the rotating shaft of the guide fan (16), the drive gear plate (21) is evenly fixedly connected to the rear surface of the push ring (19), the two ends of the guide rod (20) are symmetrically fixedly connected to the inner front wall and the inner rear wall of the drive cover (17), the push ring (19) is slidably connected to the outer side wall of the guide rod (20), the two electric push rods (18) are symmetrically installed on the front surface of the drive cover (17), and the telescopic shaft of the electric push rod (18) is fixedly connected to the push ring (19).

2. The high-torque, low-loss robot joint motor according to claim 1, characterized in that: The gear ring (22) is located inside the drive cover (17), the outer side wall of the drive tooth plate (21) is meshedly connected to the outer side wall of the gear ring (22), and the guide fans (16) are evenly distributed outside the drive cover (17).

3. The high-torque, low-loss robot joint motor according to claim 1, characterized in that: The cooling assembly (101) further includes a sealing cover (13) and a flow guide cover (14); The sealing cover (13) is fixedly connected to the rear surface of the rear end cover (11), the air guide cover (14) is fixedly connected to the rear surface of the sealing cover (13), the driving cover (17) and the air guide fan (16) are both located inside the air guide cover (14), and the rear surface of the air guide cover (14) is fixedly connected to a protective net (15).

4. The high-torque, low-loss robot joint motor according to claim 3, characterized in that: The cooling assembly (101) further includes two air inlet channels (25), a connecting hole (26), a mounting ring (27), a fixing column (28) and an air inlet hole (29); The two air inlet passages (25) are symmetrically opened inside the motor shaft (24), the air inlet holes (29) are respectively opened on the rear end surface of the motor shaft (24) and the outer side wall of the motor shaft (24), the connecting hole (26) is opened on the outer side wall of the motor shaft (24), the mounting ring (27) is fixedly connected to the outer side wall of the motor shaft (24), and the fixing column (28) is symmetrically fixedly connected to the outer side wall of the motor shaft (24).

5. The high-torque, low-loss robot joint motor according to claim 4, characterized in that: The air inlet hole (29) is in communication with the air inlet passage (25), and the connecting hole (26) is in communication with the air inlet passage (25).

6. The high-torque, low-loss robot joint motor according to claim 4, characterized in that: A rotor assembly (301) is mounted on the outer side wall of the motor shaft (24), wherein the rotor assembly (301) comprises a connecting sleeve (31), a connecting ring (32), a slot (33), a magnetic steel (34), two rotor disks (35), a connecting seat (36), and a connecting plate (37); The two rotor disks (35) are fixedly connected via the connecting seat (36), the connecting sleeve (31) and the rotor disk (35) are coaxially arranged, the connecting sleeve (31) is fixedly connected to the connecting seat (36) via the connecting plate (37), the connecting ring (32) is fixedly connected to the outer wall of the connecting sleeve (31), the slot (33) is symmetrically opened on the inner wall of the connecting sleeve (31), and the magnetic steel (34) is embedded in the interior of the rotor disk (35).

7. The high-torque, low-loss robot joint motor according to claim 6, characterized in that: The outer side wall of the motor shaft (24) is slidably connected to the inner side wall of the connecting sleeve (31), and the outer side wall of the fixing column (28) is slidably connected to the inner side wall of the slot (33).

8. The high-torque, low-loss robot joint motor according to claim 6, characterized in that: The front surface of the connecting ring (32) is attached to the rear surface of the mounting ring (27), and the connecting ring (32) is fixedly connected to the mounting ring (27) via bolts.

9. The high-torque, low-loss robot joint motor according to claim 6, characterized in that: The front surface of the rear end cover (11) is fixedly connected to the front end cover (41) via bolts, the interior of the rear end cover (11) and the interior of the front end cover (41) are both fixedly connected to the stator core (42), and the interior of the stator core (42) is wound with a stator winding (43).

10. The high-torque, low-loss robot joint motor according to claim 9, characterized in that: The rotor assembly (301) is located between the two stator cores (42), and the motor shaft (24) is coaxially mounted inside the front end cover (41) and inside the rear end cover (11) via two bearings.

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