A low-voltage, high-current DC permanent magnet synchronous servo motor and use method thereof

Abstract

The present invention discloses a low-voltage, high-current DC permanent magnet synchronous servo motor and a method of using the same, and relates to the technical field of servo motors. The present invention includes a motor housing, and also includes: a drive unit, including a DC motor disposed in the motor housing; a liquid cooling unit provided with cooling water, disposed in the motor housing, including a linkage component, a liquid guide component, and a condensation component; a heat dissipation unit, disposed in the liquid cooling unit, including a heat dissipation component and a heat conduction pressure component. The advantages are: the present invention uses liquid cooling to achieve rapid cooling of the DC motor in the servo motor, and can automatically adjust the elastic water guide pipe's fitting heat absorption range according to the temperature of the DC motor, effectively improving the cooling and heat absorption effect, and can effectively improve the fluidity of the cooling water during liquid cooling, improve the heat dissipation effect of the cooling water, further improve the heat absorption effect of the cooling water, and achieve a better cooling effect.

Description

Technical Field

[0001] The present invention relates to the technical field of servo motors, and in particular to a low-voltage and high-current direct current permanent magnet synchronous servo motor and a use method thereof. Background Art

[0002] A low-voltage, high-current servo motor is a motor specially designed for high-performance applications. It is usually used in situations where precise control of speed and position is required. A low-voltage, high-current servo motor is usually composed of a built-in DC motor, a gear set, an encoder, and an output shaft. The DC motor starts the drive gear set to rotate, and controls the speed and rotation angle of the output shaft through the cooperation of the encoder. The DC motor in the servo motor will generate more heat when working for a long time, so heat dissipation is required.

[0003] Existing servo motors use a variety of methods to achieve heat dissipation, such as a low-voltage, high-current, high-efficiency permanent magnet synchronous servo motor with publication number CN116545179A, including: a servo motor; a variable speed wind heat sink, which includes a wind speed-changing power part and a wind speed-changing part, the wind speed-changing power part is on the rotor of the servo motor, and its speed is changed and transmitted to the connected wind speed-changing part; a variable speed liquid cooling heat sink, the variable speed liquid cooling heat sink includes a liquid-cooled speed-changing power part, a liquid-cooled speed-changing part and a liquid-cooled infusion part, the liquid-cooled speed-changing power part is on the rotor;

[0004] Existing devices usually use air cooling to dissipate heat, and air cooling either uses natural ventilation or fan blowing. This type of cooling method has low efficiency and cannot dissipate heat quickly. Therefore, some devices use liquid cooling to dissipate heat. Existing liquid cooling usually requires a water pump to be set in the servo motor to drive the condensate to flow to achieve heat dissipation, but the water pump occupies a large area and requires an additional driving source when working, which increases the overall power consumption of the servo motor. For example, the above-mentioned referenced prior art uses the servo motor itself to drive the condensate to squeeze and flow, but the condensate itself cannot flow when stored, and the condensate after absorbing heat cannot dissipate heat quickly. At the same time, the contact range between the condensation element and the motor is limited, and the condensation effect cannot be adjusted according to the temperature of the motor.

[0005] Therefore, it is urgent to design a low-voltage, high-current DC permanent magnet synchronous servo motor and a method of using it to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a low-voltage, high-current DC permanent magnet synchronous servo motor and a method of using the same, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A low-voltage, high-current DC permanent magnet synchronous servo motor, including a motor housing, and also including:

[0008] The drive unit comprises a DC motor disposed in a motor housing, and an output shaft is disposed on the DC motor via a driving gear set, and the drive unit is used to realize directional and constant speed servo rotation of the output shaft;

[0009] A liquid cooling unit with cooling water is provided in the motor housing and is used to realize rapid liquid cooling and heat dissipation of the DC motor. The unit includes a linkage component, a liquid guide component and a condensation component, wherein the linkage component operates under the drive of the output shaft and drives the liquid guide component to start, and the cooling water is circulated through the condensation component to realize rapid condensation and cooling of the DC motor;

[0010] The heat dissipation unit is arranged in the liquid cooling unit, and is used to achieve rapid heat dissipation of cooling water and improve the cooling and heat absorption efficiency of the condensing component. It includes a heat dissipation component and a heat conductive pressure component, wherein the heat conductive pressure component is used to pressurize the condensing component and adjust the heat absorption effect of the condensing component according to the heat generation degree of the DC motor.

[0011] Preferably, the driving gear set comprises an upper partition fixedly mounted in the motor housing, a driving roller is rotatably mounted between the upper partition and the driving end of the DC motor, a gear 1 is fixedly mounted on the driving roller, a straight rod 1 is rotatably mounted between the upper partition and the motor housing, a gear 2 and a gear 3 are fixedly mounted on the straight rod 1, and the gear 2 is meshed with the gear 1;

[0012] A straight rod 2 is rotatably mounted on the upper partition, and an output shaft is fixedly mounted on the upper portion of the straight rod 2. A gear 4 is fixedly mounted on the straight rod 2, and the gear 4 is meshed with the gear 3. A lower partition is fixedly mounted in the motor housing, and a DC motor is fixedly placed on the lower partition. An encoder is provided on the lower partition, and the encoder cooperates with the straight rod 2.

[0013] Preferably, the linkage assembly includes a vertical roller rotatably mounted between the upper partition and the lower partition, a limit plate is fixedly mounted on the DC motor, and a positioning plate is installed between the limit plate and the driving roller via a locking mechanism, and a driving wheel is fixedly mounted on the positioning plate, a driven wheel is fixedly mounted on the vertical roller, and a transmission belt is sleeved between the driving wheel and the driven wheel.

[0014] Preferably, the locking mechanism includes a plurality of limit slide bars rotatably mounted on the limit plate, and the positioning plate is fixedly mounted on the upper part of the plurality of limit slide bars, an internal ring is fixedly mounted in the driving roller, an electromagnetic ring is fixedly mounted in the positioning plate, a plurality of positioning pins are slidably mounted in the positioning plate, a permanent magnetic arc plate matching the electromagnetic ring is fixedly mounted on each of the positioning pins, two reset springs are fixedly mounted between each of the permanent magnetic arc plates and the inner wall of the positioning plate, and a plurality of positioning holes matching the corresponding positioning pins are provided in the internal ring.

[0015] Preferably, the liquid guiding component includes a liquid storage tank fixedly installed in the motor housing, a linkage roller is rotatably installed in the liquid storage tank, a bevel gear 2 is fixedly installed on the linkage roller, a bevel gear 1 meshing with the bevel gear 2 is fixedly installed on the vertical roller, and a liquid supply mechanism is arranged in the liquid storage tank.

[0016] Preferably, the liquid supply mechanism includes a water pressure plate slidably installed in the liquid storage tank, and the liquid storage tank is filled with cooling water on the left side of the water pressure plate, a reciprocating screw is fixedly installed on the linkage roller, and a ball nut plate matching the reciprocating screw is fixedly installed on the water pressure plate, and a plurality of liquid exchange pipes for drainage and water replenishment are arranged on the liquid storage tank.

[0017] Preferably, the condensation assembly includes a liquid guide pipe fixedly connected to the liquid storage tank, and a one-way water supply valve for only one-way water supply is arranged in the liquid guide pipe, an elastic water guide pipe is fixedly connected to the liquid guide pipe, and the elastic water guide pipe is spirally wound around the outside of the DC motor, a downpipe is fixedly connected between the end of the elastic water guide pipe and the liquid storage tank, and a one-way water supply valve for only one-way water supply is arranged in the downpipe, the water pressure plate moves to press the cooling water in the liquid storage tank into the elastic water guide pipe through the liquid guide pipe, and after circulating through the elastic water guide pipe, the cooling water returns to the liquid storage tank through the downpipe to complete the circulation.

[0018] Preferably, the heat dissipation assembly includes a heat dissipation box fixedly installed in the motor housing, a wave condenser is fixedly installed in the heat dissipation box, the water inlet and outlet ends of the wave condenser are connected to the liquid storage tank, and a plurality of water-stirring parts are fixedly installed at the end of the linkage roller. The linkage roller drives the plurality of water-stirring parts to rotate, thereby improving the fluidity of the cooling water in the liquid storage tank and improving the heat dissipation efficiency of the cooling water.

[0019] Preferably, the heat-conducting pressure-applying assembly comprises a heat-conducting ring fixedly mounted on the outside of the DC motor, two fixed plates fixedly mounted on the upper partition, a storage tube fixedly mounted on each of the fixed plates, each of the storage tubes is filled with condensate, a piston extrusion piece is slidably mounted in the storage tube, and an extruded heat-conducting plate is fixedly mounted on each of the piston extrusion pieces, and the inner side of each extruded heat-conducting plate is fitted with the outer side of the elastic water-conducting pipe, a return spring is fixedly mounted between each of the extruded heat-conducting plates and the corresponding fixed plate, two heat-conducting rods are fixedly mounted on the heat-conducting ring, and each of the heat-conducting rods penetrates the corresponding storage tube and is inserted into the condensate;

[0020] A micro electric telescopic rod is fixedly mounted on each of the fixed plates, and a driving end of each micro electric telescopic rod is fixedly mounted on the extruded heat conducting plate via a connecting spring. A temperature sensor for monitoring temperature is provided on the DC motor, and both micro electric telescopic rods cooperate with the temperature sensor.

[0021] A method for using a low-voltage, high-current DC permanent-magnet synchronous servo motor, which is used for the above-mentioned low-voltage, high-current DC permanent-magnet synchronous servo motor, comprises the following steps:

[0022] S1. When using this servo motor, install the component to be driven on the output shaft, start the DC motor and drive the output shaft to rotate with the cooperation of the driving gear set;

[0023] S2, driving the liquid guide component to start through the linkage component, pushing the cooling water into the condensation component for circulation, and removing the heat of the DC motor through the condensation component;

[0024] S3. When the liquid guide component is started, the heat dissipation component is started synchronously to quickly dissipate the cooling water in the liquid guide component and dissipate the temperature in the motor housing to the external air;

[0025] S4. Start the heat-conducting pressure component according to the temperature adaptability of the DC motor to pressurize the condensation component to increase the contact area between the condensation component and the DC motor.

[0026] The present invention provides a low-voltage, high-current DC permanent magnet synchronous servo motor and a method of using the motor. The motor has the following beneficial effects:

[0027] 1. In actual use, this DC permanent magnet synchronous servo motor controls the speed and direction of the DC motor through the encoder input control current, and realizes the rotation of the output shaft through the cooperation of the driving gear set, so as to achieve torque output and realize precise control of the rotation of the output shaft.

[0028] 2. When the DC permanent magnet synchronous servo motor is actually used, when the operating temperature of the DC motor is high, the internal drive of the liquid guide component can be realized to achieve rapid heat dissipation through the cooperation of the linkage component. When rapid heat dissipation is not required, the linkage component does not cooperate with the DC motor to achieve natural heat dissipation, that is, heat dissipation can be carried out according to the actual temperature conditions, and the heat dissipation effect is better.

[0029] 3. When the DC permanent magnet synchronous servo motor is actually used, when rapid heat dissipation is required, the linkage assembly can be used to realize the coordination of the liquid guide assembly and the condensation assembly, so as to realize the reciprocating circulation of cooling water in the elastic water guide pipe, and the heat of the DC motor can be quickly taken away during the circulation process, thereby realizing rapid heat dissipation.

[0030] 4. When the DC permanent magnet synchronous servo motor is actually used, it can realize the rotation of multiple water stirring parts through the driving of the linkage assembly during the cooling water circulation process, so as to stir the cooling water in the liquid storage tank, and realize the outflow heat dissipation of the cooling water inside the liquid storage tank through the cooperation of the external wave condenser tube, which can effectively improve the fluidity of the cooling water and improve the heat dissipation efficiency of the cooling water.

[0031] 5. When the DC permanent magnet synchronous servo motor is actually used, it can realize the automatic extrusion of the elastic water conduit through the cooperation of the heat-conducting pressure component according to the temperature of the DC motor, thereby effectively increasing the contact range between the elastic water conduit and the DC motor under the extrusion of the heat-conducting pressure component at high temperature, and further improving the heat absorption effect of the elastic water conduit.

[0032] In summary, the present invention adopts liquid cooling to achieve rapid cooling of the DC motor in the servo motor, and can automatically adjust the fitting heat absorption range of the elastic water conduit according to the temperature of the DC motor, effectively improving the cooling and heat absorption effect, and can effectively improve the fluidity of the cooling water during liquid cooling, improve the heat dissipation effect of the cooling water, further improve the heat absorption effect of the cooling water, and achieve a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0034] Figure 1 A schematic diagram of the structure of a low-voltage, high-current DC permanent magnet synchronous servo motor proposed by the present invention;

[0035] Figure 2 for Figure 1 Schematic diagram of the internal structure of the motor housing;

[0036] Figure 3 for Figure 2 A front view of

[0037] Figure 4 for Figure 2 The structural diagram of the middle drive unit;

[0038] Figure 5 for Figure 2 Schematic diagram of the structure of the liquid storage tank and DC motor;

[0039] Figure 6 for Figure 5 Schematic diagram of the structure of the DC motor and transmission belt;

[0040] Figure 7 for Figure 6 Schematic diagram of the exploded structure of the middle positioning plate and the transmission belt;

[0041] Figure 8 for Figure 7 Schematic diagram of the internal structure of the middle positioning plate;

[0042] Fig. 9 for Figure 8 A magnified view of the structure of the middle A part;

[0043] Fig.10 for Figure 5 The structural diagram of the middle liquid storage tank;

[0044] Fig.11 for Fig.10 Schematic diagram of the internal structure of the middle liquid storage tank;

[0045] Fig.12 for Fig.11 A top view of

[0046] Fig.13 for Fig.11 The structural diagram of the heat sink;

[0047] Fig.14 for Figure 5 Schematic diagram of the structure of the DC motor and two extruded heat conducting plates;

[0048] Fig.15 for Fig.14 A schematic diagram of the structure of the heat transfer pressure component;

[0049] Fig.16 for Fig.15 Schematic diagram of the internal structure of the storage tube.

[0050] In the figure: 1 motor housing, 2 heat sink, 3 output shaft, 4 liquid exchange tube, 5 upper partition, 6 lower partition, 7 DC motor, 8 liquid storage tank, 9 encoder, 10 drive roller, 11 drive gear set, 12 positioning plate, 13 transmission belt, 14 vertical roller, 15 liquid guide tube, 16 extrusion heat conduction plate, 17 limit plate, 18 built-in ring, 19 electromagnetic ring, 20 permanent magnetic arc plate, 21 positioning pin, 22 return spring, 23 positioning card hole, 24 helical gear 2, 25 linkage roller, 26 helical gear 1, 27 reciprocating screw, 28 water pressure plate, 29 limit spring rod, 30 ball nut plate, 31 water stirring part, 32 wave condenser, 33 elastic water guide tube, 34 heat conduction ring, 35 fixed plate, 36 return spring, 37 storage tube, 38 heat conduction rod, 39 piston extrusion part. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0052] Example 1: Reference Figure 1-Figure 4 , a low-voltage, high-current DC permanent magnet synchronous servo motor, comprising a motor housing 1;

[0053] The low-voltage, high-current servo motor also includes: a drive unit, including a DC motor 7 disposed in a motor housing 1, and an output shaft 3 is disposed on the DC motor 7 via a driving gear set 11, and the drive unit is used to realize directional and constant-speed servo rotation of the output shaft 3;

[0054] A lower partition 6 is fixedly installed in the motor housing 1, and a DC motor 7 is fixedly placed on the lower partition 6. An encoder 9 is provided on the lower partition 6, and the encoder 9 cooperates with the straight rod 2. The servo motor controls the speed and direction of the DC motor 7 by inputting a control current through the encoder 9, and provides real-time feedback on the real-time speed of the DC motor 7 and the position of the internal rotor, thereby realizing precise control of the speed and angle of rotation of the DC motor 7.

[0055] The driving gear set 11 includes an upper partition plate 5 fixedly installed in the motor housing 1, a driving roller 10 is rotatably installed between the upper partition plate 5 and the driving end of the DC motor 7, a gear 1 is fixedly installed on the driving roller 10, a straight rod 1 is rotatably installed between the upper partition plate 5 and the motor housing 1, and a gear 2 and a gear 3 are fixedly installed on the straight rod 1, and the gear 2 is meshed with the gear 1;

[0056] The DC motor 7 starts to drive the driving roller 10 to rotate, the driving roller 10 rotates to drive the gear 1 to rotate, the gear 1 rotates to drive the gear 2 meshing with it to rotate, the gear 2 rotates to drive the straight rod 1 to rotate, thereby driving the gear 3 to rotate together;

[0057] A straight rod 2 is rotatably mounted on the upper partition 5, and the output shaft 3 is fixedly mounted on the upper part of the straight rod 2. A gear 4 is fixedly mounted on the straight rod 2, and the gear 4 is meshed with the gear 3. The rotation of the gear 3 drives the gear 4 meshed with it to rotate, and the rotation of the gear 4 drives the straight rod 2 to rotate, which can drive the rotation of the output shaft 3, and the power output of the output shaft 3 can be realized.

[0058] In a further embodiment, the servo motor further comprises a liquid cooling unit provided with cooling water, which is arranged in the motor housing 1 and is used to realize rapid liquid cooling and heat dissipation of the DC motor 7, and can perform self-heating liquid cooling and passive absorption heat dissipation when the temperature of the DC motor 7 is not high, and when the temperature is high, the liquid cooling unit is started to realize the circulation flow of cooling water to dissipate heat;

[0059] The heat dissipation unit is arranged in the liquid cooling unit, and is used to realize rapid heat dissipation of cooling water and improve the cooling and heat absorption efficiency of the condensing component. The heat dissipation unit is used to adaptively adjust the heat dissipation efficiency according to the temperature of the DC motor 7 when the liquid cooling unit is started, so as to realize rapid heat dissipation of the DC motor 7 in a high-temperature environment.

[0060] Example 2: Reference Figure 1-Figure 3 as well as Figure 5-Figure 9 The technical solution of this embodiment is different from that of the first embodiment in that the liquid cooling unit includes a linkage component, a liquid guide component and a condensation component, wherein the linkage component operates under the drive of the output shaft 3 and drives the liquid guide component to start, and the cooling water is circulated through the condensation component to achieve rapid condensation and cooling of the DC motor 7;

[0061] A temperature sensor for monitoring the temperature is provided on the DC motor 7. The temperature sensor is used to monitor the real-time temperature of the DC motor 7 so as to determine whether the DC motor 7 needs to be cooled and the degree of cooling;

[0062] The linkage assembly includes a vertical roller 14 rotatably mounted between the upper partition 5 and the lower partition 6, a limit plate 17 is fixedly mounted on the DC motor 7, and a positioning plate 12 is installed between the limit plate 17 and the driving roller 10 through a locking mechanism;

[0063] The locking mechanism includes a plurality of limit slide bars rotatably mounted on a limit plate 17, and a positioning plate 12 is fixedly mounted on the upper portion of the plurality of limit slide bars. An internal ring 18 is fixedly mounted inside the driving roller 10. The limit slide bars cooperate with the positioning plate 12 to achieve the limiting of the positioning plate 12, so that the positioning plate 12 can be supported on the outside of the driving roller 10 when not positioned, and can rotate freely without being hindered when positioned.

[0064] An electromagnetic ring 19 is fixedly installed in the positioning disk 12, and a plurality of positioning pins 21 are slidably installed in the positioning disk 12. A permanent magnetic arc plate 20 matching the electromagnetic ring 19 is fixedly installed on each positioning pin 21. A plurality of positioning holes 23 matching the corresponding positioning pins 21 are opened in the built-in ring 18.

[0065] If it is monitored that the passive heat dissipation effect is not good and active heat dissipation is needed, start the electromagnetic ring 19 to generate magnetic repulsion between it and the permanent magnetic arc plate 20. The magnetic repulsion force acts on the permanent magnetic arc plate 20 to push the permanent magnetic arc plate 20 to move, thereby pushing the positioning pin 21 on the permanent magnetic arc plate 20 to move. When the positioning pin 21 moves and engages with the positioning pin 21 in the built-in ring 18, the automatic locking of the positioning pin 21 and the positioning hole 23 is completed. At this time, the positioning plate 12 and the built-in ring 18 are locked, that is, the rotation of the built-in ring 18 will drive the positioning plate 12 to rotate.

[0066] Two reset springs 22 are fixedly installed between each permanent magnetic arc plate 20 and the inner wall of the positioning plate 12. The two reset springs 22 are used to limit the permanent magnetic arc plate 20 so that the permanent magnetic arc plate 20 can move stably horizontally and can facilitate the rapid reset of the permanent magnetic arc plate 20.

[0067] A driving wheel is fixedly mounted on the positioning disk 12, a driven wheel is fixedly mounted on the vertical roller 14, and a transmission belt 13 is sleeved between the driving wheel and the driven wheel. The rotation of the driving roller 10 drives the internal ring 18 to rotate, and the rotation of the internal ring 18 drives the positioning disk 12 to rotate under the cooperation of the locking mechanism. When the positioning disk 12 rotates, the driving wheel is driven to rotate, and the rotation of the driving wheel drives the driven wheel to rotate under the cooperation of the transmission belt 13, thereby driving the vertical roller 14 to rotate rapidly.

[0068] According to the instruction manual Figure 6 As shown, the outer diameter of the driving wheel is much larger than the outer diameter of the driven wheel, that is, the rotation speed of the driving wheel is much larger than the rotation speed of the driven wheel, so that when the driving roller 10 rotates at a relatively slow speed, the rotation speed of the driven wheel will also be relatively fast, thereby driving the vertical roller 14 to rotate quickly, effectively promoting the working efficiency of the subsequent condensation components and improving the cooling effect.

[0069] In a further embodiment, the liquid guide assembly includes a liquid storage tank 8 fixedly mounted in the motor housing 1, a linkage roller 25 is rotatably mounted in the liquid storage tank 8, a bevel gear 24 is fixedly mounted on the linkage roller 25, and a bevel gear 1 26 meshing with the bevel gear 24 is fixedly mounted on the vertical roller 14;

[0070] The rotation of the vertical roller 14 will drive the bevel gear 1 26 thereon to rotate, and the rotation of the bevel gear 1 26 will drive the bevel gear 2 24 meshing therewith to rotate, thereby driving the linkage roller 25 to rotate.

[0071] A liquid supply mechanism is provided in the liquid storage tank 8, and the liquid supply mechanism includes a water pressure plate 28 slidably mounted in the liquid storage tank 8, and the liquid storage tank 8 is filled with cooling water on the left side of the water pressure plate 28, a reciprocating screw 27 is fixedly mounted on the linkage roller 25, and a ball nut plate 30 matched with the reciprocating screw 27 is fixedly mounted on the water pressure plate 28;

[0072] The rotation of the linkage roller 25 drives the reciprocating screw 27 thereon to rotate, and the rotation of the reciprocating screw 27 drives the ball nut plate 30 matched thereon to reciprocate, thereby driving the water pressure plate 28 to reciprocate in the liquid storage tank 8;

[0073] The cooperation between the reciprocating screw 27 and the ball nut plate 30 is an existing technology. The specific principle is: the reciprocating screw 27 is a form of a three-dimensional cam pair, which is manifested as two thread grooves with the same pitch and opposite rotation direction. The two ends of the screw are connected by a transition curve. Through the rotation of the screw, the side of the spiral groove pushes the ball placed in the spiral groove of the ball nut plate 30 to make axial reciprocating motion, thereby driving the ball nut plate 30 to reciprocate, that is, when the reciprocating screw 27 rotates unidirectionally, it can drive the ball nut plate 30 to make reciprocating linear motion on the reciprocating screw 27.

[0074] The condensing assembly includes a liquid guide pipe 15 fixedly connected to the liquid storage tank 8, and a one-way water supply valve for one-way water supply is arranged in the liquid guide pipe 15, an elastic water guide pipe 33 is fixedly connected to the liquid guide pipe 15, and the elastic water guide pipe 33 is spirally wound on the outside of the DC motor 7, a downpipe is fixedly connected between the end of the elastic water guide pipe 33 and the liquid storage tank 8, and a one-way water supply valve for one-way water supply is arranged in the downpipe, and the water pressure plate 28 moves to press the cooling water in the liquid storage tank 8 into the elastic water guide pipe 33 through the liquid guide pipe 15, and after circulating through the elastic water guide pipe 33, it returns to the liquid storage tank 8 through the downpipe to complete the circulation;

[0075] When the water pressure plate 28 moves forward (i.e., the instruction manual attached) Fig.11 When the cooling water in the liquid storage tank 8 is squeezed (in the direction from the mark 29 to the mark 28), the cooling water in the liquid storage tank 8 will be pressed into the elastic water guide pipe 33 through the liquid guide pipe 15, and the cooling water originally in the elastic water guide pipe 33 will enter the liquid storage tank 8 through the down pipe for replenishment, and when the water pressure plate 28 moves in the reverse direction, it will be further back-drawn through the down pipe, thereby improving the down pipe water discharge efficiency;

[0076] When the water pressure plate 28 moves forward again, the cooling water will be pressed into the elastic water pipe 33 again. By doing this reciprocating motion, the cooling water in the elastic water pipe 33 can be circulated. Since the elastic water pipe 33 fits the outer wall of the DC motor 7, the cooling water can quickly take away the heat from the DC motor 7 during the circulation, thereby achieving rapid active heat dissipation.

[0077] The liquid storage tank 8 is provided with a plurality of liquid replacement pipes 4 for draining and replenishing water. The liquid replacement pipes 4 are used to replace the cooling water in the liquid storage tank 8. When the water pressure plate 28 does not move, the cooling water in the elastic water pipe 33 is fully filled, that is, the water pressure plate 28 presses the cooling water into the elastic water pipe 33 from bottom to top, and controls the upper liquid level of the elastic water pipe 33 to be lower than the lower water pipe, that is, the cooling water in the elastic water pipe 33 will not be discharged through the lower water pipe, that is, when no active heat dissipation is performed, a part of cooling water is still retained in the elastic water pipe 33, so that this part of cooling water is used for passive heat dissipation, that is, this part of cooling water is used to absorb heat and conduct it to the cooling water in the liquid storage tank 8, thereby realizing passive heat absorption.

[0078] Example 3: Reference Figure 1-Figure 3 as well as Figure 10-Figure 16 The difference between this embodiment and the second embodiment is that the heat dissipation unit includes a heat dissipation component and a heat conduction pressure component, wherein the heat conduction pressure component is used to pressurize the condensation component and adjust the heat absorption effect of the condensation component according to the heating degree of the DC motor 7;

[0079] The heat dissipation assembly includes a heat dissipation box 2 fixedly installed in the motor housing 1, and a plurality of water stirring members 31 are fixedly installed at the end of the linkage roller 25. The linkage roller 25 drives the plurality of water stirring members 31 to rotate, thereby improving the fluidity of the cooling water in the liquid storage tank 8 and improving the heat dissipation efficiency of the cooling water.

[0080] When the linkage roller 25 rotates, it drives the multiple water stirring members 31 to rotate. When the multiple water stirring members 31 rotate, they stir the cooling water in the liquid storage tank 8, thereby improving the fluidity of the cooling water and further improving the heat dissipation efficiency of the cooling water.

[0081] A wave condenser 32 is fixedly installed in the heat sink 2. The water inlet and outlet of the wave condenser 32 are both connected to the liquid storage tank 8. The water stirring of the water stirring member 31 cooperates with the water pressing of the water pressing plate 28 to press the cooling water in the liquid storage tank 8 into the wave condenser 32. Since the wave condenser 32 is located in the heat sink 2 and is connected to the outside of the motor housing 1, the wave condenser 32 can be used to cooperate with the external air to achieve rapid heat dissipation of the cooling water, thereby effectively reducing the temperature of the cooling water inside the liquid storage tank 8 and further improving the cooling efficiency.

[0082] In a further embodiment, the heat-conducting pressure-applying assembly includes a heat-conducting ring 34 fixedly mounted on the outside of the DC motor 7, two fixed plates 35 fixedly mounted on the upper partition plate 5, a storage tube 37 fixedly mounted on each fixed plate 35, each storage tube 37 is filled with condensate, and a piston extrusion member 39 is slidably mounted in the storage tube 37;

[0083] An extruded heat conducting plate 16 is fixedly mounted on each piston extrusion member 39, and the inner side of each extruded heat conducting plate 16 is in contact with the outer side of the elastic water conducting tube 33. A return spring 36 is fixedly mounted between each extruded heat conducting plate 16 and the corresponding fixed plate 35. Two heat conducting rods 38 are fixedly mounted on the heat conducting ring 34, and each heat conducting rod 38 penetrates the corresponding storage tube 37 and is inserted into the condensate.

[0084] The heat-conducting ring 34 is arranged outside the DC motor 7, and can absorb and conduct the heat of the DC motor 7, thereby further accelerating the heat dissipation effect of the DC motor 7. At the same time, when actively dissipating heat, the heat absorbed by the heat-conducting ring 34 will be conducted to the heat-conducting rod 38, and the heat on the heat-conducting rod 38 will be conducted to the storage tube 37 and absorbed by the condensate in the storage tube 37, thereby increasing the temperature of the condensate;

[0085] After the condensate absorbs heat to a certain extent, its temperature rises and it will vaporize. After vaporization, it will expand in volume inside the storage tube 37, thereby pushing the piston extrusion member 39 to move. When the piston extrusion member 39 moves, it will push the extrusion heat conducting plate 16 to move. When the extrusion heat conducting plate 16 moves, it will squeeze the elastic water conduit 33. When the elastic water conduit 33 is squeezed, it will deform and be pressed against the side of the DC motor 7 by the deformation, so as to increase the contact area between the elastic water conduit 33 and the DC motor 7, that is, increase the heat absorption area of ​​the elastic water conduit 33, and further increase the heat absorption effect of the elastic water conduit 33.

[0086] In a further embodiment, the movement of the extruded heat conducting plate 16 can also be carried out in the following manner: a micro-electric telescopic rod is fixedly mounted on each fixed plate 35, and the driving end of each micro-electric telescopic rod is fixedly mounted on the extruded heat conducting plate 16 through a connecting spring, and the two micro-electric telescopic rods are matched with a temperature sensor, and the temperature sensor is used to monitor the cooling effect of the DC motor 7 in real time. If the cooling effect is insufficient, the micro-electric telescopic rod is started to drive the extruded heat conducting plate 16 to move, thereby squeezing the elastic water conduit 33 to increase its contact area with the DC motor 7, thereby enhancing the heat absorption effect. This movement method of the extruded heat conducting plate 16 is more sensitive, the extruded heat conducting plate 16 moves faster, and the extrusion force applied can also be controlled, which is more convenient.

[0087] The two moving modes can also cooperate with each other to achieve slow movement and pressurization or fast movement and pressurization of the extruded heat conducting plate 16, which can be used under different cooling requirements of the DC motor 7 to improve the cooling efficiency.

[0088] The embodiment of the present invention further provides a method for using a low-voltage, high-current DC permanent magnet synchronous servo motor, which is used for the above-mentioned low-voltage, high-current DC permanent magnet synchronous servo motor, and includes the following steps:

[0089] S1. When the servo motor is in use, the driven component is mounted on the output shaft 3, the DC motor 7 is started and the output shaft 3 is driven to rotate with the cooperation of the driving gear set 11;

[0090] S2, driving the liquid guide component to start through the linkage component, pushing the cooling water into the condensation component for circulation, and removing the heat of the DC motor 7 through the condensation component;

[0091] S3, when the liquid guide component is started, the heat dissipation component is started synchronously, and the cooling water in the liquid guide component is quickly cooled, and the temperature in the motor housing 1 is dissipated to the external air;

[0092] S4. Start the heat-conducting pressure component according to the temperature adaptability of the DC motor 7 to pressurize the condensation component to increase the contact area between the condensation component and the DC motor 7.

[0093] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-voltage, high-current DC permanent magnet synchronous servo motor, comprising a motor housing (1), characterized in that: Also includes: A drive unit, comprising a DC motor (7) disposed in a motor housing (1), wherein the DC motor (7) is provided with an output shaft (3) via a drive gear set (11), and the drive unit is used to achieve directional and constant speed servo rotation of the output shaft (3); A liquid cooling unit with cooling water is provided, which is arranged in the motor housing (1) and is used to achieve rapid liquid cooling and heat dissipation of the DC motor (7), and comprises a linkage component, a liquid guide component and a condensation component, wherein the linkage component operates under the drive of the output shaft (3) and drives the liquid guide component to start, and the cooling water is circulated through the condensation component to achieve rapid condensation and cooling of the DC motor (7); The linkage assembly comprises a vertical roller (14) rotatably mounted between an upper partition (5) and a lower partition (6); a limit plate (17) is fixedly mounted on the DC motor (7); a positioning plate (12) is mounted between the limit plate (17) and the driving roller (10) via a locking mechanism; a driving wheel is fixedly mounted on the positioning plate (12); a driven wheel is fixedly mounted on the vertical roller (14); and a transmission belt (13) is sleeved between the driving wheel and the driven wheel; The locking mechanism comprises a plurality of limit slide bars rotatably mounted on a limit plate (17), and the positioning plate (12) is fixedly mounted on the upper parts of the plurality of limit slide bars, a built-in ring (18) is fixedly mounted in the driving roller (10), an electromagnetic ring (19) is fixedly mounted in the positioning plate (12), a plurality of positioning latches (21) are slidably mounted in the positioning plate (12), a permanent magnetic arc plate (20) matching with the electromagnetic ring (19) is fixedly mounted on each of the positioning latches (21), two return springs (22) are fixedly mounted between each of the permanent magnetic arc plates (20) and the inner wall of the positioning plate (12), and a plurality of positioning latch holes (23) matching with the corresponding positioning latches (21) are provided in the built-in ring (18); A heat dissipation unit is arranged in the liquid cooling unit and is used to achieve rapid heat dissipation of cooling water and improve the cooling and heat absorption efficiency of the condensing component, comprising a heat dissipation component and a heat conduction pressure component, wherein the heat conduction pressure component is used to pressurize the condensing component and adjust the heat absorption effect of the condensing component according to the degree of heat generation of the DC motor (7); The heat-conducting pressure-applying assembly comprises a heat-conducting ring (34) fixedly mounted on the outside of the DC motor (7); two fixed plates (35) fixedly mounted on the upper partition plate (5); a storage tube (37) fixedly mounted on each of the fixed plates (35); each of the storage tubes (37) is filled with condensate; a piston extrusion member (39) is slidably mounted in the storage tube (37); an extruded heat-conducting plate (16) is fixedly mounted on each of the piston extrusion members (39); the inner side of each extruded heat-conducting plate (16) is in contact with the outer side of the elastic water-conducting tube (33); a return spring (36) is fixedly mounted between each of the extruded heat-conducting plates (16) and the corresponding fixed plate (35); and two heat-conducting rods (38) fixedly mounted on the heat-conducting ring (34); and each of the heat-conducting rods (38) passes through the corresponding storage tube (37) and is inserted into the condensate.

2. A low-voltage, high-current DC permanent magnet synchronous servo motor according to claim 1, characterized in that: The driving gear set (11) comprises an upper partition (5) fixedly mounted in the motor housing (1), a driving roller (10) rotatably mounted between the upper partition (5) and the driving end of the DC motor (7), a gear 1 being fixedly mounted on the driving roller (10), a straight rod 1 being rotatably mounted between the upper partition (5) and the motor housing (1), a gear 2 and a gear 3 being fixedly mounted on the straight rod 1, and the gear 2 being meshed with the gear 1; A straight rod 2 is rotatably mounted on the upper partition plate (5), and an output shaft (3) is fixedly mounted on the upper portion of the straight rod 2. A gear 4 is fixedly mounted on the straight rod 2, and the gear 4 is meshed with the gear 3. A lower partition plate (6) is fixedly mounted in the motor housing (1), and a DC motor (7) is fixedly placed on the lower partition plate (6). An encoder (9) is provided on the lower partition plate (6), and the encoder (9) cooperates with the straight rod 2.

3. A low-voltage, high-current DC permanent magnet synchronous servo motor according to claim 2, characterized in that: The liquid guiding assembly comprises a liquid storage tank (8) fixedly mounted in a motor housing (1), a linkage roller (25) rotatably mounted in the liquid storage tank (8), a second bevel gear (24) fixedly mounted on the linkage roller (25), a first bevel gear (26) meshing with the second bevel gear (24) fixedly mounted on the vertical roller (14), and a liquid supply mechanism provided in the liquid storage tank (8).

4. A low-voltage, high-current DC permanent magnet synchronous servo motor according to claim 3, characterized in that: The liquid supply mechanism comprises a water pressure plate (28) slidably mounted in the liquid storage tank (8), and the liquid storage tank (8) is filled with cooling water on the left side of the water pressure plate (28), a reciprocating screw (27) is fixedly mounted on the linkage roller (25), and a ball nut plate (30) matched with the reciprocating screw (27) is fixedly mounted on the water pressure plate (28), and a plurality of liquid exchange pipes (4) for draining water and replenishing water are arranged on the liquid storage tank (8).

5. A low-voltage, high-current DC permanent magnet synchronous servo motor according to claim 4, characterized in that: The condensing assembly comprises a liquid guide pipe (15) fixedly connected to a liquid storage tank (8), and a one-way water supply valve for only one-way water supply is arranged in the liquid guide pipe (15); an elastic water guide pipe (33) is fixedly connected to the liquid guide pipe (15), and the elastic water guide pipe (33) is spirally wound on the outside of the DC motor (7); a downpipe is fixedly connected between the end of the elastic water guide pipe (33) and the liquid storage tank (8), and a one-way water supply valve for only one-way water supply is arranged in the downpipe; the water pressure plate (28) moves to press the cooling water in the liquid storage tank (8) into the elastic water guide pipe (33) through the liquid guide pipe (15), and the cooling water returns to the liquid storage tank (8) through the downpipe after circulating through the elastic water guide pipe (33), completing the circulation.

6. A low-voltage, high-current DC permanent magnet synchronous servo motor according to claim 5, characterized in that: The heat dissipation assembly comprises a heat dissipation box (2) fixedly mounted in a motor housing (1), a wave condenser (32) fixedly mounted in the heat dissipation box (2), a water inlet end and a water outlet end of the wave condenser (32) both being connected to a liquid storage tank (8), a plurality of water stirring members (31) fixedly mounted at the end of the linkage roller (25), the linkage roller (25) driving the plurality of water stirring members (31) to rotate, thereby improving the fluidity of cooling water in the liquid storage tank (8) and improving the heat dissipation efficiency of the cooling water.

7. A low-voltage, high-current DC permanent magnet synchronous servo motor according to claim 6, characterized in that: A micro electric telescopic rod is fixedly mounted on each of the fixing plates (35), and a driving end of each micro electric telescopic rod is fixedly mounted on the extruded heat conducting plate (16) via a connecting spring. A temperature sensor for monitoring temperature is provided on the DC motor (7), and both micro electric telescopic rods cooperate with the temperature sensor.

8. A method for using a low-voltage, high-current, direct-current permanent-magnet synchronous servo motor, used for the low-voltage, high-current, direct-current permanent-magnet synchronous servo motor as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1. When the servo motor is used, the component to be driven is mounted on the output shaft (3), the DC motor (7) is started and the output shaft (3) is driven to rotate in cooperation with the driving gear set (11); S2, driving the liquid guide component to start through the linkage component, pushing the cooling water into the condensation component for circulation, and removing the heat of the DC motor (7) through the condensation component; S3, when the liquid guide component is started, the heat dissipation component is started synchronously to quickly dissipate the cooling water in the liquid guide component and dissipate the temperature in the motor housing (1) to the external air; S4. Starting the heat-conducting pressure component according to the temperature adaptability of the DC motor (7) to pressurize the condensing component, thereby increasing the contact area between the condensing component and the DC motor (7).

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