Water-cooled motor

Abstract

The invention relates to the technical field of motors, and provides a water-cooled motor which comprises a motor body, a motor shell, a motor shaft, an end cover and a water cooling assembly, the motor body is arranged in the motor shell, the motor shaft is connected with the motor body, and the end cover is detachably connected to the end of the motor shell; the water cooling assembly is used for cooling the motor main body, the water cooling assembly comprises a heat transfer sleeve, a water tank, a water inlet pipe and a water outlet pipe, the motor main body is sleeved with the heat transfer sleeve, the heat transfer sleeve is located between the motor main body and the motor shell, and a cooling cavity is formed in the heat transfer sleeve; the water inlet pipe and the water outlet pipe are both communicated with the cooling cavity, and the end, connected with the heat transfer sleeve, of the water outlet pipe is located above the end, connected with the heat transfer sleeve, of the water inlet pipe; and the water tank is arranged below the motor main body and is used for storing cooling water. The motor has the effect of improving heat dissipation of the motor.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a water-cooled motor. Background Art

[0002] The motor is the core device for converting electrical energy into mechanical energy. It primarily consists of a housing, end caps, stator, rotor, bearings, and motor shaft. The housing (base) serves as the motor's external support and protection, and is typically made of cast iron or aluminum alloy. It secures the stator core within, while heat dissipation ribs enhance heat dissipation. The motor's interior is sealed to isolate foreign matter such as dust and moisture, and grounding ensures electrical safety. The end caps are bolted to each end of the housing, supporting the bearings and sealing the motor cavity.

[0003] The stator, the stationary component, typically consists of a stator core made of laminated silicon steel sheets and stator windings wound around it. When energized, the stator windings generate a rotating magnetic field. The rotor, the rotating component of the motor, consists of a rotor core (also laminated silicon steel sheets) and rotor windings. The stator magnetic field induces an electromotive force (EMF) and generates electromagnetic torque, which drives the motor shaft. The motor shaft, made of high-strength metal, runs through the center of the rotor. One end is fixedly connected to the rotor, and the other end is connected to an external load through a coupling or other components, transmitting mechanical torque. These components operate in coordination.

[0004] During operation, motors generate a large amount of heat. If this heat cannot be dissipated promptly, the motor temperature will rise, affecting its performance and lifespan. Therefore, to ensure stable and efficient operation of the motor, a cooling system is required to dissipate the generated heat promptly to maintain the motor's normal operating temperature. Otherwise, overheating will cause the motor's performance to deteriorate or even damage it. Currently, motor cooling is mainly fan-cooled, where the fan blades attached to the motor's tail shaft drive air flow, removing heat transferred from the motor's interior to the casing. However, the fan blade cooling effect is limited, and the operation of the fan blades also generates wind friction losses, which reduce the efficiency of the motor and therefore needs to be improved. Summary of the Invention

[0005] In order to improve the heat dissipation effect of the motor and reduce the temperature of the motor during operation, the present application provides a water-cooled motor.

[0006] The present application provides a water-cooled motor adopting the following technical solution: A water-cooled motor comprises a motor body, a motor housing, a motor shaft, an end cover, and a water-cooling assembly, wherein the motor body is disposed inside the motor housing, the motor shaft is connected to the motor body and passes through the motor housing, and the end cover is detachably connected to an end of the motor housing; The water cooling assembly is used to cool the motor body, and the water cooling assembly includes a heat transfer sleeve, a water tank, a water inlet pipe, and a water outlet pipe. The heat transfer sleeve is sleeved on the motor body and located between the motor body and the motor housing. A cooling cavity is defined inside the heat transfer sleeve. The water inlet pipe and the water outlet pipe are both in communication with the cooling cavity. The end of the water outlet pipe connected to the heat transfer sleeve is located above the end of the water inlet pipe connected to the heat transfer sleeve. The water tank is arranged below the motor body and is used to store cooling water. The end of the water inlet pipe away from the heat transfer sleeve is connected to the water tank, and the cooling water is transported to the water inlet pipe by a water pump; the end of the water outlet pipe away from the motor body is connected to the water tank, and the cooling water flows back to the water tank through the water outlet pipe.

[0007] By adopting this technical solution, when the motor is running, the motor body generates a large amount of heat. Through heat transfer, this heat is transferred to the heat transfer sleeve. Cooling water in the water tank, pumped by a water pump, flows along the water inlet pipe into the cooling cavity inside the heat transfer sleeve, subsequently filling the entire cooling cavity. Finally, the cooling water flows back into the water tank through the water outlet pipe, completing the circulation process. During this circulation process, the cooling water continuously removes heat from the heat transfer sleeve, thereby reducing the temperature of the motor during operation.

[0008] At the same time, the cooling water flows from bottom to top, filling the entire cooling chamber, extending its residence time and fully absorbing heat. After absorbing heat, the cooling water's temperature rises and its density decreases. That is, the density of the cooling water at the top of the cooling chamber is lower than that at the bottom, making it easier for the higher-temperature cooling water to flow from bottom to top to the outlet pipe for discharge.

[0009] Preferably, one end of the water inlet pipe is rotatably connected to a water inlet sleeve, and the heat transfer sleeve is provided with a water inlet, and the water inlet sleeve passes through the motor housing and is screwed to the water inlet; the heat transfer sleeve is also provided with a water outlet, and one end of the water outlet pipe is rotatably connected to a water outlet sleeve, and the water outlet sleeve passes through the motor housing and is screwed to the water outlet.

[0010] By adopting the above technical solution, the water inlet sleeve and the water outlet sleeve are both screwed onto the heat transfer sleeve, thereby realizing the detachable connection between the water inlet pipe and the heat transfer sleeve and the detachable connection between the water outlet pipe and the heat transfer sleeve.

[0011] Preferably, a cooler is further included, which is arranged at the position where the water tank and the water inlet pipe are connected, and is used to cool the cooling water.

[0012] By adopting the above technical solution, the cooler can cool the cooling water, reducing the temperature of the cooling water entering the cooling chamber and improving the heat dissipation of the motor. A cooler is a heat exchange device used to reduce the temperature of a fluid (such as water). Its core principle is to transfer heat from the water to another medium (such as air, cooling water, or refrigerant) through heat exchange, thereby lowering the water temperature. Coolers are conventional technologies, such as shell and tube coolers, plate coolers, or fin coolers, and can be selected based on actual needs.

[0013] Preferably, a plurality of heat dissipation holes are provided on the motor housing, and the heat dissipation holes are used for dissipating heat from the heat transfer sleeve.

[0014] By adopting the above technical solution, the presence of the heat dissipation holes can provide heat dissipation for the heat transfer sleeve, that is, the heat transfer sleeve can transfer heat with the air, thereby further reducing the temperature inside the motor, ensuring stable operation of the motor, and extending its service life.

[0015] Preferably, it further comprises an air cooling component, which is arranged below the motor body and above the water tank, and is used to blow air to the heat transfer sleeve from bottom to top.

[0016] By adopting the above technical solution, the air cooling component can blow air from the bottom to the top of the heat transfer sleeve, thereby taking away the heat from the heat transfer sleeve and the motor casing. The water cooling and air cooling are combined to further improve the heat dissipation effect of the motor.

[0017] Preferably, the air cooling component includes a water wheel, a first connecting shaft, a first bevel gear, a second bevel gear, a second connecting shaft and a fan blade, the water wheel is rotatably connected to the water tank and is located below the water outlet end of the outlet pipe; the first connecting shaft is coaxially arranged with the water wheel, and the first bevel gear is arranged on the first connecting shaft; the second connecting shaft is rotatably connected to the cover plate of the water tank, the second bevel gear is arranged on the second connecting shaft and meshes with the first bevel gear, the fan blade is arranged on the second connecting shaft, and is used to blow air to the heat transfer sleeve.

[0018] By adopting this technical solution, the water wheel blades are bowl- or spoon-shaped and distributed along a horizontal circumference. Cooling water in the outlet pipe falls vertically, impacting the water wheel blades tangentially, driving the water wheel to rotate about the first connecting shaft (the first connecting shaft is horizontal). This process converts the gravitational potential energy of the water flow into the water wheel's rotational kinetic energy. Due to the meshing of the first and second helical gears, the rotation of the first connecting shaft is converted into rotational motion of the second connecting shaft (the second connecting shaft is vertical). The transmission ratio can be adjusted by the gear ratio (e.g., 1:1 or 2:1, depending on the required speed).

[0019] The fan blades are propeller-shaped or flat-plate-shaped and are radially distributed around the second connecting shaft. The second connecting shaft obtains rotational kinetic energy through the second bevel gear transmission, thereby driving the fan blades to rotate in height, cutting the air to generate airflow and achieve air cooling.

[0020] Preferably, a high-pressure nozzle is provided at the water outlet end of the water outlet pipe, and the water flow from the high-pressure nozzle is used to impact the water wheel; the diameter of the water outlet pipe gradually decreases in the direction approaching the high-pressure nozzle.

[0021] By adopting the above technical solution, the high-pressure nozzle can gather the cooling water in the outlet pipe into a high-speed jet. The high-pressure nozzle is aimed at the edge of the water wheel blade to ensure that the impact direction is at an angle of about 90° to the blade tangent, thereby maximizing the torque and better impacting the water wheel rotation.

[0022] Preferably, the end cover is fixed to the motor housing by means of bolt locking.

[0023] By adopting the above technical solution, the bolt passes through the end cover and is screwed to the motor housing, thereby realizing a detachable connection of the end cover and facilitating the removal of the heat transfer sleeve from the inside of the motor housing.

[0024] Preferably, a guide bar is provided on the outer surface of the heat transfer sleeve, and the guide bar is arranged along the axial direction of the heat transfer sleeve. A guide groove is provided on the inner wall of the motor housing, and the guide bar is clamped in the guide groove.

[0025] By adopting the above technical solution, the guide strips and the guide grooves cooperate with each other, making it convenient for the heat transfer sleeve to be inserted between the motor housing and the motor body in a straight line direction.

[0026] Preferably, it further comprises a support frame, and the motor housing is supported above the cover plate of the water tank by the support frame.

[0027] By adopting the above technical solution, the support frame plays a supporting role, so that the entire motor is stably placed above the water tank.

[0028] In summary, this application includes at least one of the following beneficial technical effects: (1) By setting up a water cooling component, when the motor is running, the heat generated by the motor body will be transferred to the heat transfer sleeve. Under the action of the water pump, the cooling water in the water tank flows along the water inlet pipe to the cooling cavity inside the heat transfer sleeve, then fills the entire cooling cavity, and finally the cooling water flows back to the water tank from the water outlet pipe, completing the circulation. During the circulation process, the cooling water can continuously remove the heat from the heat transfer sleeve, thereby achieving cooling and reducing the temperature of the motor during operation.

[0029] (2) By setting up an air cooling component, the air cooling component can blow air from bottom to top on the heat transfer sleeve, thereby taking away the heat from the heat transfer sleeve and the motor casing. Water cooling is the main method, and air cooling is the auxiliary method. The two cooling methods cooperate with each other to further improve the heat dissipation effect of the motor.

[0030] (3) By setting up a high-pressure nozzle, the cooling water in the outlet pipe can be gathered into a high-speed jet, thereby providing greater kinetic energy to impact the water wheel blades and drive the water wheel to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a structural diagram of a motor in an embodiment of the present application; Figure 2 is a top view of the motor body in an embodiment of the present application; Figure 3 yes Figure 2 A schematic cross-sectional view of the motor body AA; Figure 4 is a structural diagram of a motor in another embodiment of the present application; Figure 5 This is a partial structural diagram of a motor in another embodiment of the present application Figure numerals: 1. Motor body; 2. Motor housing; 3. Motor shaft; 4. End cover; 5. Water cooling assembly; 51. Heat transfer sleeve; 52. Water tank; 53. Water inlet pipe; 54. Water outlet pipe; 6. Support frame; 7. Water pump; 8. Heat dissipation hole; 9. Air cooling assembly; 91. Water wheel; 92. First connecting shaft; 93. First bevel gear; 94. Second bevel gear; 95. Second connecting shaft; 96. Fan blade; 10. Partition; 11. Cooler; 12. First cavity; 13. Second cavity; 14. Water inlet jacket; 15. Water outlet jacket; 16. Cooling chamber. DETAILED DESCRIPTION

[0032] The following will describe the technical solution of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. The present application can be embodied in many different forms and is not limited to the embodiments described here.

[0033] Throughout the present application, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of this application, unless otherwise specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, integration, or mechanical connections. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this application based on specific circumstances.

[0036] Some embodiments of the present application are described in detail below with reference to the accompanying drawings. In the absence of conflict, those skilled in the art may combine and combine the different embodiments or examples and features of the different embodiments or examples shown in the present application.

[0037] The embodiment of the present application discloses a water-cooled motor. Figures 1 to 3 The water-cooled motor includes a motor body 1, a motor housing 2, a motor shaft 3, an end cap 4, and a water-cooling assembly 5. The motor body 1 is mounted inside the motor housing 2. The motor shaft 3 is connected to the motor body 1 and extends through one end of the motor housing 2. The end cap 4 is detachably connected to the end of the motor housing 2 away from the motor shaft 3. The end cap 4 is fastened to the motor housing 2 by bolts. The bolts are removable and facilitate removal of the end cap 4.

[0038] The water cooling assembly 5 is used to cool the motor body 1. The water cooling assembly 5 includes a heat transfer sleeve 51, a water tank 52, a water inlet pipe 53, and a water outlet pipe 54. The heat transfer sleeve 51 is sleeved on the outer surface of the motor body 1 and is located between the motor body 1 and the motor housing 2. The heat transfer sleeve 51 is made of a material with good thermal conductivity, such as copper, aluminum nitride, or silicon carbide. A cooling cavity 16 is provided inside the heat transfer sleeve 51, and the water inlet pipe 53 and the water outlet pipe 54 are both connected to the cooling cavity 16. The heat transfer sleeve 51 is provided with a water inlet and a water outlet. The water inlet pipe 53 is connected to the water inlet, and the water outlet pipe 54 is connected to the water outlet. The water outlet is located above the water inlet, so that the end of the water outlet pipe 54 connected to the heat transfer sleeve 51 is located above the end of the water inlet pipe 53 connected to the heat transfer sleeve 51.

[0039] A water tank 52 is located below the motor body 1 and stores cooling water. The motor housing 2 is mounted on the cover of the water tank 52 via a support frame 6, which supports the entire motor. A water inlet pipe 53, located at the end away from the heat transfer sleeve 51, communicates with the water tank 52. A water pump 7 is mounted on the water inlet pipe 53, pumping cooling water along the water inlet pipe 53. A water outlet pipe 54, located at the end away from the motor body 1, communicates with the water tank 52, allowing the cooling water to flow back into the water tank 52 through the outlet pipe 54.

[0040] When the motor is running, the motor body 1 generates a large amount of heat. Through heat transfer, this heat is transferred from the motor body 1 to the heat transfer sleeve 51. Cooling water in the water tank 52, pumped by the water pump 7, flows along the water inlet pipe 53 into the cooling chamber 16 within the heat transfer sleeve 51, filling the entire cooling chamber 16. Finally, the cooling water flows back into the water tank 52 through the water outlet pipe 54, completing the cycle. During this circulation process, the cooling water continuously removes heat from the heat transfer sleeve 51, thereby reducing the motor's operating temperature.

[0041] At the same time, the cooling water flows from bottom to top, filling the entire cooling chamber 16, extending its residence time and allowing it to fully absorb heat. Furthermore, as the cooling water absorbs heat, its temperature rises and its density decreases. That is, the density of the cooling water at the upper end of the cooling chamber 16 is lower than that at the lower end. This allows the higher-temperature cooling water to flow from bottom to top to the outlet pipe 54 for discharge under the action of water pressure.

[0042] Specifically, one end of the water inlet pipe 53 is rotatably connected to the water inlet sleeve 14. The water inlet sleeve 14 passes through the motor housing 2 and is screwed onto the water inlet pipe 53. The screw connection achieves a detachable connection between the water inlet pipe 53 and the heat-conducting sleeve. One end of the water outlet pipe 54 is rotatably connected to the water outlet sleeve 15. The water outlet sleeve 15 passes through the motor housing 2 and is screwed onto the water outlet. The water outlet pipe 54 and the heat-conducting sleeve are detachably connected. In this embodiment, a guide bar is fixedly connected to the outer wall of the heat transfer sleeve 51. The guide bar is arranged along the axis of the heat transfer sleeve 51. A guide groove is provided on the inner wall of the motor housing 2. The guide bar is clamped into the guide groove. The two cooperate with each other to facilitate the linear insertion of the heat transfer sleeve 51 between the motor housing 2 and the motor body 1.

[0043] Among them, a number of heat dissipation holes 8 are provided on the side of the motor housing 2 close to the water tank 52 and the side away from the water tank 52. The heat dissipation holes 8 are used for heat dissipation of the heat transfer sleeve 51, so that heat transfer occurs between the heat transfer sleeve 51 and the air. The presence of the heat dissipation holes 8 can play an auxiliary cooling role, further reduce the temperature inside the motor, ensure the stable operation of the motor, and extend its service life.

[0044] Combine Figure 4 and Figure 5In addition, in some embodiments, an air cooling assembly 9 is installed below the motor body 1. The air cooling assembly 9 is located above the opening of the water tank 52 and is used to blow air from the bottom up to cool the heat transfer sleeve 51. The air cooling assembly 9 includes a water wheel 91, a first connecting shaft 92, a first bevel gear 93, a second bevel gear 94, a second connecting shaft 95 and fan blades 96. The water wheel 91 is rotatably connected to the water tank 52 and is located below the water outlet end of the outlet pipe 54. The blades of the water wheel 91 are bowl-shaped or spoon-shaped and are distributed along a horizontal circumference. The first connecting shaft 92 and the water wheel 91 are coaxially arranged and rotatably connected to the water tank 52. The first connecting shaft 92 is arranged horizontally. The first bevel gear 93 is coaxially arranged on the first connecting shaft 92. The second connecting shaft 95 is arranged vertically and rotatably connected to the cover plate of the water tank 52. The second bevel gear 94 is fixedly mounted on the second connecting shaft 95 and meshes with the first bevel gear 93. The fan blades 96 are fixedly connected to the connecting shaft. The fan blades 96 are propeller-shaped or flat-plate-shaped and are radiated around the second connecting shaft 95 . The fan blades 96 are used to blow air to dissipate heat from the heat transfer sleeve 51 .

[0045] During motor operation, cooling water in outlet pipe 54 falls vertically, impacting the tangential direction of the blades of water wheel 91, driving water wheel 91 to rotate about first connecting shaft 92 (first connecting shaft 92 is horizontal). This process converts the gravitational potential energy of the water flow into rotational kinetic energy of water wheel 91. Due to the meshing of first bevel gear 93 and second bevel gear 94, the rotation of first connecting shaft 92 is converted into rotational motion of second connecting shaft 95 (second connecting shaft 95 is vertical). The transmission ratio can be adjusted by the gear ratio (e.g., 1:1 or 2:1, depending on the required speed). Second connecting shaft 95 obtains rotational kinetic energy through the second bevel gear transmission, which in turn drives blades 96 to rotate at a high speed, cutting through the air and generating airflow. This blows air upwards from bottom to top onto heat transfer sleeve 51, removing heat from the heat transfer sleeve 51 and motor housing 2. The combination of water and air cooling further improves the heat dissipation of the motor and reduces its operating temperature.

[0046] Among them, a high-pressure nozzle can also be set at the water outlet end of the water outlet pipe 54. The water flow from the high-pressure nozzle is used to impact the water wheel 91. The diameter of the water outlet pipe 54 gradually decreases in the direction close to the high-pressure nozzle. The high-pressure nozzle is aligned with the edge of the water wheel 91 blade to ensure that the angle between the impact direction and the blade tangent is about 90° to achieve maximum torque; the high-pressure nozzle can gather the cooling water in the water outlet pipe 54 into a high-speed jet, thereby better impacting the rotation of the water wheel 91, increasing the speed of the water wheel 91, and then increasing the wind force of the fan blade 96 to achieve better heat dissipation. In order to adapt to the impact of water flow, the surface of the water wheel 91 blade is usually designed to be concave or curved, so that the water flow is diverted along both sides after impact, avoiding the reflected water flow from causing a reverse impact on the subsequent blades.

[0047] A partition 10 is fixedly connected to the water tank 52, dividing the water tank 52 into two cavities: a first cavity 12 and a second cavity 13. The water wheel 91 is located in the first cavity 12, and the water pump 7 and the water inlet pipe 53 are located in the second cavity 13. A cooler 11 is also installed outside the water tank 52. The two ends of the cooler 11 are connected to the first cavity 12 and the second cavity 13 respectively. The cooler 11 is used to cool the cooling water in the first cavity 12 and transfer the cooled water to the second cavity 13.

[0048] The cooler 11 is a heat exchange device used to reduce the temperature of a fluid (such as water). Its core principle is to transfer heat from the water to another medium (such as air, cooling water, or refrigerant) through heat exchange, thereby reducing the water temperature. The cooler 11 is a conventional technology, such as a shell and tube cooler 11, a plate cooler 11, or a fin cooler 11, and can be reasonably selected according to actual needs. After the cooling water flows back into the first cavity 12, the temperature is relatively high. The cooling water is cooled by the cooler 11 and then transported to the second cavity 13, thereby reducing the temperature of the cooling water entering the cooling cavity 16 and improving the heat dissipation effect of the motor.

[0049] The implementation principle of a water-cooled motor in an embodiment of the present application is as follows: when the motor is running, the heat generated by the motor body 1 is transferred to the heat transfer sleeve 51. Under the action of the water pump 7, the cooling water in the water tank 52 flows along the water inlet pipe 53 into the cooling cavity 16 inside the heat transfer sleeve 51, then fills the entire cooling cavity 16. Finally, the cooling water flows back into the water tank 52 from the water outlet pipe 54, completing the circulation. During the circulation process, the cooling water can continuously remove the heat from the heat transfer sleeve 51, thereby achieving cooling and lowering the temperature of the motor during operation.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water-cooled motor, characterized in that: The motor comprises a motor body (1), a motor housing (2), a motor shaft (3), an end cover (4) and a water cooling assembly (5), wherein the motor body (1) is arranged inside the motor housing (2), the motor shaft (3) is connected to the motor body (1) and passes through the motor housing (2), and the end cover (4) is detachably connected to the end of the motor housing (2); The water cooling assembly (5) is used to cool the motor body (1). The water cooling assembly (5) includes a heat transfer sleeve (51), a water tank (52), a water inlet pipe (53) and a water outlet pipe (54). The heat transfer sleeve (51) is sleeved on the motor body (1) and is located between the motor body (1) and the motor housing (2). A cooling cavity (16) is provided inside the heat transfer sleeve (51). The water inlet pipe (53) and the water outlet pipe (54) are both in communication with the cooling cavity (16). One end of the water outlet pipe (54) connected to the heat transfer sleeve (51) is located above one end of the water inlet pipe (53) connected to the heat transfer sleeve (51). The water tank (52) is arranged below the motor body (1) and is used to store cooling water. The end of the water inlet pipe (53) away from the heat transfer sleeve (51) is connected to the water tank (52), and the cooling water is transported to the water inlet pipe (53) through the water pump (7); the end of the water outlet pipe (54) away from the motor body (1) is connected to the water tank (52), and the cooling water flows back to the water tank (52) through the water outlet pipe (54).

2. A water-cooled motor according to claim 1, characterized in that: One end of the water inlet pipe (53) is rotatably connected to a water inlet sleeve (14); a water inlet is provided on the heat transfer sleeve (51); the water inlet sleeve (14) passes through the motor housing (2) and is screwed to the water inlet; a water outlet is also provided on the heat transfer sleeve (51); one end of the water outlet pipe (54) is rotatably connected to a water outlet sleeve (15); the water outlet sleeve (15) passes through the motor housing (2) and is screwed to the water outlet.

3. The water-cooled motor according to claim 1, characterized in that: It also includes a cooler (11), which is arranged at a position where the water tank (52) and the water inlet pipe (53) are connected, and the cooler (11) is used to cool the cooling water.

4. The water-cooled motor according to claim 1, characterized in that: A plurality of heat dissipation holes (8) are provided on the motor housing (2), and the heat dissipation holes (8) are used for dissipating heat from the heat transfer sleeve (51).

5. The water-cooled motor according to claim 4, characterized in that: It also includes an air cooling component (9), which is arranged below the motor body (1) and above the water tank (52), and is used to blow air from bottom to top to the heat transfer sleeve (51).

6. The water-cooled motor according to claim 5, characterized in that: The air-cooling assembly (9) comprises a water wheel (91), a first connecting shaft (92), a first bevel gear (93), a second bevel gear (94), a second connecting shaft (95) and a fan blade (96); the water wheel (91) is rotatably connected to the water tank (52) and is located below the water outlet end of the water outlet pipe (54); the first connecting shaft (92) is coaxially arranged with the water wheel (91), and the first bevel gear (93) is arranged on the first connecting shaft (92); The second connecting shaft (95) is rotatably connected to the cover plate of the water tank (52); the second bevel gear (94) is provided on the second connecting shaft (95) and meshes with the first bevel gear (93); the fan blade (96) is provided on the second connecting shaft (95) and is used to blow air to the heat transfer sleeve (51).

7. The water-cooled motor according to claim 6, characterized in that: A high-pressure nozzle is provided at the water outlet end of the water outlet pipe (54), and the water flow from the high-pressure nozzle is used to impact the water wheel (91); the diameter of the water outlet pipe (54) gradually decreases in a direction approaching the high-pressure nozzle.

8. The water-cooled motor according to claim 1, characterized in that: The end cover (4) is fixed to the motor housing (2) by means of bolt locking.

9. The water-cooled motor according to claim 8, characterized in that: The outer surface of the heat transfer sleeve (51) is provided with a guide strip, which is arranged along the axial direction of the heat transfer sleeve (51). A guide groove is provided on the inner wall of the motor housing (2), and the guide strip is clamped in the guide groove.

10. The water-cooled motor according to claim 1, characterized in that: It also includes a support frame (6), and the motor housing (2) is supported above the cover plate of the water tank (52) through the support frame (6).

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