Cooling structure of a servo motor

Abstract

The utility model discloses a kind of cooling structure of servo motor, it is related to motor cooling technical field, comprising: servo motor;Annular plate, set in the outer surface of servo motor, for sensing the heat generated by servo motor and change;Water cooling component, set below soft board, there is gap between the soft board and water cooling component, for cooling the working heat of servo motor;Adjusting assembly is fixedly connected with water cooling component, the first rotating plate wheel of adjusting assembly adjusts the size of water cooling component pipe diameter, for adjusting the cooling speed of water cooling component to servo motor;The utility model can induct adjust pipe diameter to improve water cooling flow rate, improve cooling efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor cooling technical field, especially a kind of cooling structure of servo motor. BACKGROUND

[0002] As the core driving component in automation equipment, the performance and reliability of servo motor have important influence on the overall operation efficiency of equipment. When servo motor is operated under high load for a long time, the heat generated by winding can cause temperature rise of functional components such as stator, rotor and bearing. If heat is not dissipated in time, heat accumulation can cause aging of insulation material, degradation of magnetic properties of iron core and failure of lubricant, thereby shortening the service life of servo motor and even causing failure. Especially in high-precision and high-stability operation scenarios such as industrial robots, numerical control machine tools and semiconductor manufacturing equipment, the overheating problem of servo motor poses a major threat to the precision and operation stability of the overall system.

[0003] In the prior art, the flow rate of cooling liquid in the water cooling system is usually limited by the diameter of the pipeline. Since the diameter of the flow pipeline is fixed, it cannot be adjusted accordingly according to the demand, which reduces the flow rate of the cooling liquid, and lower flow rate can reduce the heat exchange efficiency of water cooling, resulting in unsatisfactory cooling effect. SUMMARY

[0004] The utility model discloses a kind of cooling structure of servo motor, solve the problem that cannot inductive adjustment pipe diameter improves water cooling flow rate, reduces cooling efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions: A kind of cooling structure of servo motor, is installed on servo motor, and include: Annular plate, is arranged on the outer surface of servo motor, for inducting the heat generated by servo motor to change; Water cooling assembly, is arranged below annular plate, and there is gap between annular plate and water cooling assembly, for cooling the working heat of servo motor; Adjusting assembly, is fixedly connected with water cooling assembly, the first rotating plate wheel of adjusting assembly adjusts the pipe diameter size of water cooling assembly, for adjusting the cooling speed of servo motor by water cooling assembly; When servo motor works, its internal electric element of servo motor begins to generate electric heat, so that servo motor acts on adjusting assembly by electric heat, then adjusting assembly starts to operate, so that the first rotating plate of adjusting assembly rotates angle adjusts the pipe diameter size of water cooling assembly, while manually opening water cooling assembly, so that water cooling assembly starts to output coolant to servo motor for heat absorption cooling.

[0006] Preferably, the water cooling assembly comprises a water pump, a cooling part and a connecting part, the water pump is arranged on the side of the servo motor, the output end of the water pump is fixedly connected with the connecting part, and the connecting part is connected with the cooling part. The connecting part comprises a fixed cylinder, a first soft plate and a second soft plate, the fixed cylinder is connected with the output end pipeline of the water pump, the inside of the fixed cylinder is slidably connected with the first soft plate, the surface of the first soft plate is extrudedly matched with the second soft plate, and one end of the second soft plate is slidably connected with the fixed cylinder.

[0007] Preferably, the cooling part comprises a connecting pipe, a water cooling pipe and a discharge pipe, the connecting pipe is fixedly connected with both ends of the fixed cylinder, one end of the connecting pipe is fixedly connected with the water cooling pipe, and one end of the water cooling pipe is fixedly connected with the discharge pipe.

[0008] Preferably, the adjusting assembly further comprises a rotating part and a fixed part, the rotating part is arranged on the side of the circular plate, and the bottom end of the rotating part is fixedly connected with the fixed part. The rotating part comprises a rack, a rotating rod and a gear, the side of the rack is fixedly connected with the circular plate, the rack is meshed with the gear, and the rotating rod penetrates through the gear from top to bottom and is fixedly connected with the first rotating plate downwards.

[0009] Preferably, the fixed part comprises a fixed plate and a connecting rod, the top end of the fixed plate is fixedly connected with the first rotating plate, the bottom end of the fixed plate is fixedly connected with the connecting rod, and one end of the connecting rod is fixedly connected with the movable frame.

[0010] Preferably, the movable frame comprises a connecting plate, a second rotating plate, a third rotating plate, a first fixed rod and a second fixed rod, one side of the connecting plate is fixedly connected with the connecting rod, one end of the second rotating plate and one end of the third rotating plate are rotatably connected with the connecting plate respectively, the other end of the second rotating plate is fixedly connected with the first fixed rod, and the other end of the third rotating plate is fixedly connected with the second fixed rod.

[0011] Preferably, one end of the first fixed rod is fixedly connected with the first soft plate, and one end of the second fixed rod is fixedly connected with the second soft plate.

[0012] Preferably, the first soft plate and the second soft plate adopt a circular arc structure.

[0013] Compared with the prior art, the water cooling assembly has the following beneficial effects: When the servo motor generates heat during operation, the water cooling component is activated, causing it to output coolant to cool the servo motor. Simultaneously, the servo motor uses its heat to change the diameter of the annular plate, causing it to expand outward. This annular plate drives the adjustment component to move, which in turn increases the diameter of the water cooling component's pipes, accelerating the flow rate of coolant delivered by the water cooling component. This solves the problem of not being able to sense and adjust the pipe diameter to increase the water cooling flow rate, thus reducing cooling efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the rack, rotating rod, and gear components of this utility model. Figure 3 This is a schematic diagram of the structure of the third rotating plate and the second fixing rod of this utility model; Figure 4 For this Figure 3 A magnified partial structural diagram at point A in the middle.

[0017] Illustration: 1. Servo motor; 2. Circular ring plate; 3. Water cooling assembly; 310. Water pump; 320. Connecting part; 321. Fixing cylinder; 322. First flexible plate; 323. Second flexible plate; 330. Cooling section; 331. Connecting pipe; 332. Water cooling pipe; 333. Discharge pipe; 4. Adjustment assembly; 410. First rotating plate; 420. Rotating part; 421. Rack; 422. Rotating rod; 423. Gear; 430. Fixing part; 431. Fixing plate; 432. Connecting rod; 440. Movable frame; 441. Connecting plate; 442. Second rotating plate; 443. Third rotating plate; 444. First fixing rod; 445. Second fixing rod. Detailed Implementation

[0018] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] refer to Figure 1 - Figure 4 As shown, this embodiment of the utility model provides a cooling structure for a servo motor, which is mounted on the servo motor 1 and includes: A circular plate 2 is disposed on the outer surface of the servo motor 1 and is used to sense the heat generated by the servo motor 1 and change accordingly; in this embodiment, the circular plate 2 is disposed around the outer surface of the servo motor 1. A water-cooling component 3 is disposed below the annular plate 2, and there is a gap between the annular plate 2 and the water-cooling component 3, which is used to cool down the working heat of the servo motor 1. The adjusting component 4 is fixedly connected to the water-cooling component 3. The first rotating plate 410 of the adjusting component 4 adjusts the diameter of the water-cooling component 3, thereby regulating the cooling speed of the servo motor 1. When the servo motor 1 is working, its internal electrical components generate heat, which acts on the annular plate 2, increasing its diameter. This, in turn, causes the adjusting component 4 to rotate, increasing the diameter of the water-cooling component 3. Simultaneously, the water-cooling component 3 is opened, allowing it to output coolant to absorb heat and cool the servo motor 1. The water-cooling component 3 can be opened in various ways, including but not limited to manual valve opening or solenoid valve opening.

[0022] refer to Figure 1 and Figure 2 As shown, the water-cooling assembly 3 includes: a water pump 310, a cooling section 330, and a connecting section 320. The water pump 310 is disposed on the side of the servo motor 1. The output end of the water pump 310 is fixedly connected to the connecting section 320, and the connecting section 320 is connected to the cooling section 330. The connecting part 320 includes: a fixed cylinder 321, a first flexible plate 322 and a second flexible plate 323. The fixed cylinder 321 is connected to the output end pipe of the water pump 310. The interior of the fixed cylinder 321 is slidably connected to the first flexible plate 322. The surface of the first flexible plate 322 is pressed and fitted with the second flexible plate 323. One end of the second flexible plate 323 is slidably connected to the fixed cylinder 321. The cooling section 330 includes a connecting pipe 331, a water-cooling pipe 332, and a discharge pipe 333. The connecting pipe 331 is fixedly connected to both ends of the fixed cylinder 321. One end of the connecting pipe 331 is fixedly connected to the water-cooling pipe 332, and one end of the water-cooling pipe 332 is fixedly connected to the discharge pipe 333.

[0023] When in use, the input end of the water pump 310 is connected to an external coolant source. Then, the water pump 310 is started, causing it to draw external coolant to the output end. The water pump 310 then outputs the coolant through the output end to the fixed cylinder 321 of the connecting part 320, allowing the coolant to enter the channel formed between the first flexible plate 322 and the second flexible plate 323 inside the fixed cylinder 321. The coolant then flows from the channel between the first flexible plate 322 and the second flexible plate 323 into the water cooling pipe 332. Since the water cooling pipe 332 is in close contact with the surface of the servo motor 1, the coolant in the water cooling pipe 332 absorbs the heat generated in the servo motor 1 through its specific heat capacity, and then flows into the discharge pipe 333 for discharge.

[0024] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the adjustment component 4 further includes a rotating part 420 and a fixed part 430. The rotating part 420 is disposed on the side of the annular plate 2, and the bottom end of the rotating part 420 is fixedly connected to the fixed part 430. The rotating part 420 is used to convert the heat of the servo motor 1 into rotation through the heated expansion and movement of the annular plate 2. The rotating part 420 includes a rack 421, a rotating rod 422, and a gear 423. The side of the rack 421 is fixedly connected to the annular plate 2. The rack 421 meshes with the gear 423. The rotating rod 422 passes through the gear 423 from top to bottom and extends downward to be fixedly connected to the first rotating plate 410. The fixing part 430 includes a fixing plate 431 and a connecting rod 432. The top end of the fixing plate 431 is fixedly connected to the first rotating plate 410, and the bottom end of the fixing plate 431 is fixedly connected to the connecting rod 432. A connecting rod 432 is fixedly connected, with one end of the connecting rod 432 fixedly connected to the movable frame 440. The fixed part 430 transmits the force of rotation of the rotating part 420 to the movable frame 440 for movement. The movable frame 440 includes: a connecting plate 441, a second rotating plate 442, a third rotating plate 443, a first fixed rod 444, and a second fixed rod 445. One side of the connecting plate 441 is fixedly connected to the connecting rod 432, and one end of the second rotating plate 442 and the third rotating plate 443 are respectively fixedly connected to... The connecting plate 441 is rotatably connected, the other end of the second rotating plate 442 is fixedly connected to the first fixed rod 444, and the other end of the third rotating plate 443 is fixedly connected to the second fixed rod 445. The movable frame 440 is used to adjust the distance between the first flexible plate 322 and the second flexible plate 323 in the connecting part 320. In this embodiment, a rack 421, a rotating rod 422, and a gear 423 are used. The expansion of the annular plate 2 will drive the rack 421 connected to it to move. Due to the meshing of the rack and the gear 423, the rotation of the gear 423 will further drive the rotating rod 422 to rotate. The rotating rod is connected to the first rotating plate 410. The rotation of the first rotating plate 410, through its connection with the fixed plate 431, pushes the connecting rod 432, and finally drives the rotating plates (second rotating plate 442 and third rotating plate 443) in the movable frame 440 to rotate. This multi-stage transmission structure of rotation makes the gap between the first flexible plate 322 and the second flexible plate 323 change, so as to achieve precise adjustment of the diameter of the water-cooled component 3.

[0025] It should be noted that if the rotating part 420 and the first rotating plate 410 are replaced with a fixed structure, and the fixed part is directly connected to the annular plate 2 through a fixed structure, then under complex working conditions (such as the servo motor 1 heating up intensely or rapidly), since the fixed structure is a rigid body, its transmission ratio is fixed and the gain cannot be adjusted. Therefore, this fixed structure cannot accurately convert the small displacements caused by thermal expansion like a rack and pinion. The connecting plate cannot adapt to the expansion changes caused by different heat, resulting in this fixed structure only being able to function as a simple thrust transmitter without fine adjustment functions and lacking linear adjustment capability. The pipe diameter of the existing servo motor 1 water cooling system is fixed and cannot be adjusted according to different loads or heat requirements. Because the pipe diameter is fixed, when the servo motor 1 is in use, the transmission ratio is fixed and the gain cannot be adjusted. When the servo motor 1 is under high load or generates a lot of heat, the water flow rate may be insufficient, resulting in inadequate heat dissipation and affecting the cooling effect. This can lead to motor overheating, shortening its service life, or even causing malfunctions. This makes it impossible to adjust the cooling water flow rate according to the actual working state of the motor. In this embodiment, when the servo motor 1 is working, the internal components of the motor generate heat, causing the outer annular plate 2 to heat up and expand. The expansion of the annular plate 2 due to heat drives the rack 421 to move, causing the rack 421 to drive the gear 423 to rotate through meshing. The gear 423 then drives the rotating rod 422 to rotate, thereby driving the first rotating plate 410 to adjust its angle. The movement of the first rotating plate 410 is transmitted through the fixed plate 431, the connecting rod 432, and the movable frame 4. The linkage of 40 ultimately causes the first flexible plate 322 and the second flexible plate 323 to move away from each other; the diameter of the channel between the flexible plates increases, reducing water flow resistance, and thus adjusting the pipe diameter of the water-cooling component 3. By adjusting the pipe diameter, when the pipe diameter increases, the water flow resistance decreases and the water flow speed increases. By increasing the water flow speed, the heat exchange efficiency when the cooling water contacts the motor surface can be improved, quickly removing the heat generated by the motor, thereby improving the cooling effect; on the other hand, the existing technology uses a temperature-controlled valve to replace this solution. A temperature-controlled valve is a device that adjusts the water flow by sensing temperature changes. It usually relies on a built-in temperature-sensing element (such as a wax-type temperature-sensing core or a metal sheet). When the temperature rises, the temperature-sensing element expands or deforms, pushing the valve opening to increase, thereby increasing the water flow; conversely While reducing water flow is simple in structure and low in cost, it has a slow response speed and limited adjustment range, making it impossible to precisely adjust according to the actual heat demand of the servo motor 1. In this embodiment, the deformation of the annular plate 2 is directly related to the heat change of the servo motor 1. The shape memory metal can restore the preset shape in a short time, ensuring that the cooling system responds to heat changes in a timely manner. By increasing the pipe diameter through the above principle, the water flow resistance is reduced, the coolant flow rate is increased, and the cooling effect is enhanced. The characteristics of the shape memory metal enable this solution to quickly sense and respond to the heat change of the servo motor 1, avoiding overheating problems caused by lag. It is suitable for high-load, rapidly changing heat demand scenarios. At the same time, the entire adjustment process does not rely on electronic sensors or controllers, reducing the number of failure points.

[0026] When the servo motor 1 is working, the arc plate is made of shape memory metal, which is an alloy material with special phase transformation properties. It can "remember" a shape at a specific temperature and recover to this preset shape when heated or cooled. In this embodiment, the preset shape of the arc plate is a larger diameter annular plate 2. The heat generated by the servo motor 1 causes the outer surface of the annular plate 2 to expand outward, thereby driving the rack 421 to move along the second direction. The rack 421 drives the drive gear 423 to rotate through meshing, and the drive gear 423 drives the rotating rod 42. 2. Rotation, then the rotating rod 422 drives the first rotating plate 410 to rotate synchronously, causing the first rotating plate 410 to move the fixed plate 431. Then the fixed plate 431 drives the connecting rod 432 to move synchronously. Subsequently, the connecting rod 432 pushes the connecting plate 441 of the movable frame 440 to move along the second direction, causing the connecting plate 441 to push the second rotating plate 442 to rotate clockwise. At the same time, the connecting plate 441 pushes the third rotating plate 443 to rotate counterclockwise, causing the second rotating plate 442 to push the first fixed rod 444 to move along the first direction. At the same time, the third rotating plate 443 pushes the second fixed rod 445 to move along the first direction. The movement in the opposite direction causes the first fixed rod 444 and the second fixed rod 445 to begin moving away from each other, increasing the distance between them. This causes the first fixed rod 444 to move the first flexible plate 322 along the first direction, while the second fixed rod 445 moves the second flexible plate 323 in the opposite direction. Within the fixed cylinder 321, the first and second flexible plates 322 and 323 begin to move away from each other, increasing the diameter of the channel formed between them and reducing the local resistance to coolant flow. Furthermore, since the diameter of the water-cooling pipe 332 is fixed, the speed of the coolant inside the water-cooling pipe 332 increases, accelerating the adsorption and removal of heat generated by the servo motor 1, thereby improving the efficiency of heat dissipation and cooling. On the other hand, when the first flexible plate 322 and the second flexible plate 323 move away from each other to the inner wall of the fixed cylinder 321, the first flexible plate 322 and the second flexible plate 323 are restricted by the fixed cylinder 321, causing the first flexible plate 322 and the second flexible plate 323 to stop moving away from each other. Thus, the first flexible plate 322 and the second flexible plate 323 respectively stop driving the first fixed rod 444 and the second fixed rod 445 to move away from each other.

[0027] When the servo motor 1 stops working, its heat begins to decrease slowly with the cooling process and returns to normal temperature. Its shape memory metal is no longer heated and slowly shrinks back to its shape before being heated. This causes the annular plate 2 to slowly shrink and drive the rack 421 to perform the opposite process of the above movement. As a result, the diameter of the channel formed between the first flexible plate 322 and the second flexible plate 323 gradually decreases, and the local resistance of the coolant flowing into the channel gradually increases. Therefore, the speed of the coolant in the water-cooling pipe 332 decreases and slowly returns to normal.

[0028] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cooling structure for a servo motor, characterized in that, Mounted on the servo motor (1), including: A circular plate (2) is set on the outer surface of the servo motor (1) to sense the heat generated by the servo motor (1) and change accordingly; A water-cooling component (3) is set below the annular plate (2), and there is a gap between the annular plate (2) and the water-cooling component (3) for cooling the working heat of the servo motor (1); The adjustment component (4) is fixedly connected to the water cooling component (3). The first rotating plate (410) wheel of the adjustment component (4) adjusts the pipe diameter of the water cooling component (3) to adjust the cooling speed of the water cooling component (3) on the servo motor (1). When the servo motor (1) is working, the internal electrical components of the servo motor (1) start to generate electric heat, so that the servo motor (1) acts on the annular plate (2) through electric heat, which increases the change in the diameter of the flexible plate. Then the annular plate (2) drives the adjustment component (4) to start operating, so that the first rotating plate (410) of the adjustment component (4) rotates to adjust the diameter of the water cooling component (3) and at the same time the water cooling component (3) is opened, so that the water cooling component (3) starts to output coolant to absorb heat and cool down the servo motor (1).

2. The cooling structure for a servo motor according to claim 1, characterized in that, The water-cooling assembly (3) includes: a water pump (310), a cooling section (330) and a connecting section (320). The water pump (310) is located on the side of the servo motor (1). The output end of the water pump (310) is fixedly connected to the connecting section (320). The connecting section (320) is connected to the cooling section (330). The connecting part (320) includes: a fixed cylinder (321), a first flexible plate (322) and a second flexible plate (323). The fixed cylinder (321) is connected to the output end pipe of the water pump (310). The inside of the fixed cylinder (321) is slidably connected to the first flexible plate (322). The surface of the first flexible plate (322) is pressed and fitted with the second flexible plate (323). One end of the second flexible plate (323) is slidably connected to the fixed cylinder (321).

3. The cooling structure for a servo motor according to claim 2, characterized in that, The cooling section (330) includes: a connecting pipe (331), a water cooling pipe (332) and a discharge pipe (333). The connecting pipe (331) is fixedly connected to both ends of the fixed cylinder (321), one end of the connecting pipe (331) is fixedly connected to the water cooling pipe (332), and one end of the water cooling pipe (332) is fixedly connected to the discharge pipe (333).

4. The cooling structure for a servo motor according to claim 3, characterized in that, The adjustment assembly (4) further includes a rotating part (420) and a fixing part (430). The rotating part (420) is disposed on the side of the annular plate (2), and the bottom end of the rotating part (420) is fixedly connected to the fixing part (430). The rotating part (420) includes a rack (421), a rotating rod (422) and a gear (423). The side of the rack (421) is fixedly connected to the annular plate (2). The rack (421) meshes with the gear (423). The rotating rod (422) passes through the gear (423) from top to bottom and extends downward to be fixedly connected to the first rotating plate (410).

5. The cooling structure for a servo motor according to claim 4, characterized in that, The fixing part (430) includes: a fixing plate (431) and a connecting rod (432). The top end of the fixing plate (431) is fixedly connected to the first rotating plate (410), the bottom end of the fixing plate (431) is fixedly connected to the connecting rod (432), and one end of the connecting rod (432) is fixedly connected to the movable frame (440).

6. The cooling structure for a servo motor according to claim 5, characterized in that, The movable frame (440) includes: a connecting plate (441), a second rotating plate (442), a third rotating plate (443), a first fixed rod (444), and a second fixed rod (445). One side of the connecting plate (441) is fixedly connected to the connecting rod (432). One end of the second rotating plate (442) and the third rotating plate (443) are respectively rotatably connected to the connecting plate (441). The other end of the second rotating plate (442) is fixedly connected to the first fixed rod (444), and the other end of the third rotating plate (443) is fixedly connected to the second fixed rod (445).

7. The cooling structure for a servo motor according to claim 6, characterized in that, One end of the first fixing rod (444) is fixedly connected to the first flexible plate (322), and one end of the second fixing rod (445) is fixedly connected to the second flexible plate (323).

8. The cooling structure for a servo motor according to claim 7, characterized in that, Both the first flexible board (322) and the second flexible board (323) adopt an arc structure.

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