Oil-cooled integrated motor housing

Abstract

The present invention relates to the technical field of motor body components, specifically an oil-cooled three-in-one motor housing, which includes an outer protective housing. An inner assembly pipe is movably installed inside the outer protective housing. Limiting end caps are fixedly installed at both the top and bottom of the inner assembly pipe. An inner positioning pipe is fixedly installed inside the limiting end cap. A plurality of stators are movably installed inside the inner positioning pipe. Movable end caps are arranged above and below the structure formed by the inner assembly pipe and the limiting end caps. The movable end caps are movably engaged inside the outer protective housing. The cooling oil that has flowed back through the one-way valve enters the side oil guide pipe, realizing the circulation of the cooling oil and taking away heat. In this way of use, only a part of the cooling oil inside the motor housing is needed. When this part of the cooling oil cannot be used, it is replaced. The procurement of cooling oil usually requires a certain cost expenditure. Reducing the amount of cooling oil used can directly reduce the procurement cost. The cooling oil needs to be regularly replaced and maintained during use, which also incurs certain costs.

Description

Technical Field

[0001] The present invention relates to the technical field of motor body components, and specifically to an oil-cooled three-in-one motor housing. Background Art

[0002] The motor housing is an important part of the motor. The materials of the motor housing are generally selected from aluminum alloy, steel plate or cast iron. The specific selection should be determined according to factors such as the use environment, working conditions and performance requirements of the motor. During the operation of the motor, a large amount of heat will be generated. If this heat cannot be dissipated in time, it will cause the temperature of the motor to rise, affecting the performance and life of the motor. The motor housing can act as a medium for heat conduction, transferring the heat generated inside the motor to the external environment.

[0003] In conventional oil-cooled motor housings, the flow direction of the cooling oil is mostly the same, and the cooling oil circulation mode is single. The single circulation mode may lead to uneven flow of the cooling oil in the motor housing, and some parts may not be sufficiently cooled, resulting in local overheating. Under different working conditions, the heat generation of the motor will be different. The single cooling oil circulation mode may not be able to flexibly adjust the cooling effect to meet the requirements of various working conditions. The single circulation mode may not be able to make full use of the cooling capacity of the cooling oil, resulting in low cooling efficiency. In order to achieve a certain cooling effect, more cooling oil may need to be used or the power of the cooling system may need to be increased, resulting in energy waste. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil-cooled three-in-one motor housing to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solutions: an oil-cooled three-in-one motor housing, including an outer protective housing, an inner assembly pipe is movably installed inside the outer protective housing, limiting end caps are fixedly installed at the top and bottom of the inner assembly pipe, an inner positioning pipe is fixedly installed inside the limiting end cap, a plurality of stators are movably installed inside the inner positioning pipe, movable end caps are provided above and below the structure formed by the inner assembly pipe and the limiting end cap, the movable end caps are movably clamped inside the outer protective housing, first docking buckles are provided at corresponding positions at the top and bottom of the outer wall of the outer protective housing, second docking buckles are provided at positions corresponding to the first docking buckles on the outer wall of the movable end cap, and connecting bolts are provided between the first docking buckles and the second docking buckles for fixation. An arc-shaped intermediate plate and an arc-shaped oil guide plate are movably installed outside the inner assembly pipe, and the structure formed by the arc-shaped intermediate plate and the arc-shaped oil guide plate is located inside the outer protective housing. A plurality of annular oil guide grooves are formed on the arc-shaped oil guide plate, a middle oil guide chamber is provided at the central position of the arc-shaped intermediate plate, side oil guide pipes communicating with the middle oil guide chamber are provided on both sides of the middle oil guide chamber, a vertical oil guide pipe is provided on the side away from the middle oil guide chamber of the side oil guide pipe, and the vertical oil guide pipe is communicated with the side oil guide pipe. A vertical installation groove for installing the vertical oil guide pipe is vertically formed on the arc-shaped oil guide plate, and cooling oil discharge ports are formed at positions corresponding to the annular oil guide grooves on the vertical oil guide pipe. Rectangular assembly seats are provided on the front and back of the outer protective housing, the positions of the rectangular assembly seats and the middle oil guide chamber correspond to each other, and an oil inlet communicating with the rectangular assembly seat is formed on the middle oil guide chamber.

[0006] Preferably, the inner assembly pipe, the limiting end cap and the inner positioning pipe are of an integrally formed structure.

[0007] Preferably, grooves corresponding to the shapes of the stators are formed on the inner positioning pipe, and the plurality of stators are distributed in a circular array with the central axis of the inner positioning pipe as the array center.

[0008] Preferably, a part that is clamped inside the limiting end cap is provided on the side of the movable end cap close to the outer protective housing, and the side of the movable end cap close to the outer protective housing is in contact with the end of the inner positioning pipe.

[0009] Preferably, a plurality of heat dissipation fins along the track of the annular oil guide groove are provided in the annular oil guide groove, and the part of the heat dissipation fins located inside the arc-shaped oil guide plate is in contact with the outer wall of the inner assembly pipe.

[0010] Preferably, a one-way valve is provided at the bottom of one of the middle oil guide chambers, a locking valve is provided at the bottom of the other middle oil guide chamber, cooling oil flow pipes are provided at the bottoms of the one-way valve and the locking valve, and an annular oil guide pipe is provided for connection between the two cooling oil flow pipes, and the annular oil guide pipe is arranged at a position close to the bottom of the outer wall of the inner assembly pipe.

[0011] Preferably, an assembly frame is fixedly installed on the outer wall of the outer protective housing. A rectangular hollow-out groove is provided on the assembly frame, and a plurality of spaced-apart grooves are also provided on the assembly frame. A rectangular heat dissipation groove is further provided on the assembly frame, and a docking thread groove is provided on the rectangular hollow-out groove.

[0012] Preferably, an annular diversion plate is provided at the rear position of the inner wall of the rectangular assembly seat. A plurality of rectangular connecting strips are annularly arranged on the outer wall of the annular diversion plate with the central axis of the annular diversion plate as the array center. An annular drainage plate is fixedly installed on the inner wall of the annular diversion plate, and an annular diversion pipe is fixedly installed on the inner wall of the annular drainage plate. A gap is left between the annular diversion plate and the inner wall of the rectangular assembly seat.

[0013] Preferably, a plurality of V-shaped drainage grooves are provided on the annular drainage plate.

[0014] Preferably, a refrigeration ring is movably installed in the rectangular assembly seat. A condensing pipe is provided on one side of the refrigeration ring located in the rectangular assembly seat, and a docking insertion pipe is fixedly installed on the outer wall of the refrigeration ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. After the cooling oil is injected, the heat dissipation fins on the annular oil guiding groove take away the heat on the arc-shaped oil guiding plate and the inner assembly pipe. The cooling oil entering the annular oil guiding groove enters the side oil guiding pipes and the intermediate oil guiding chamber on the other side. The condensing pipe cools down the rectangular assembly seat and the intermediate oil guiding chamber at this position. The cooling oil flows along the locking valve, the cooling oil flow pipe, the annular oil guiding pipe, and the one-way valve. The cooling oil passing through the one-way valve flows back into the side oil guiding pipe, realizing the circulation of the cooling oil and taking away the heat. In this way of use, only a part of the cooling oil in the motor housing is needed. When this part of the cooling oil cannot be used, it is replaced. The procurement of cooling oil usually requires a certain cost expenditure. Reducing the amount of cooling oil used can directly reduce the procurement cost. The cooling oil needs to be replaced and maintained regularly during use, which also incurs certain costs. Reducing the amount of cooling oil used means reducing the frequency and workload of maintenance, thereby reducing the maintenance cost. Cooling the cooling oil usually requires consuming a certain amount of energy, but compared with the increased energy consumption of the motor due to overheating, the energy consumption of the cooling system is relatively small. By cooling the cooling oil, the temperature of the motor can be reduced, the demand of the motor for the cooling system can be reduced, and thus the energy consumption of the cooling system can be reduced.

[0017] 2. The locking valve locks and seals. The oil delivery pipe provides power for the delivery of cooling oil. The cooling oil enters the intermediate oil guiding chamber, then passes through the side oil guiding pipe and the vertical oil guiding pipe, and flows in the annular oil guiding groove, entering the intermediate oil guiding chamber on the other side. The cooling oil entering this position is discharged through the oil outlet pipe on the rectangular mounting base, thus realizing another circulation mode of the cooling oil and taking away heat. The unidirectional circulation of the cooling oil in the motor housing can continuously take away the heat generated during the operation of the motor. The unidirectionally flowing cooling oil can quickly absorb heat, keeping the motor within a relatively stable temperature range. The flow rate of the cooling oil is larger, and the effect of taking away the temperature of the motor housing is better, cooling the motor housing better and faster.

[0018] 3. The arc-shaped intermediate plate and the arc-shaped oil guiding plate can be customized according to different situations to meet different cooling oil flow paths, so as to better dissipate heat from the specified positions of the motor housing. During the design and use of different motor housings, the heat generation parts may vary. By changing the flow path of the cooling oil, key cooling can be carried out for specific high-temperature areas, improving the heat dissipation efficiency. For motor housings with irregular shapes or complex internal structures, a single cooling oil flow path may not achieve uniform heat dissipation. Changing the flow path can enable the cooling oil to better cover the entire surface of the motor housing, ensuring that the temperatures of all parts can be effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention.

[0020] Figure 2 It is a left side view structural schematic diagram of the present invention.

[0021] Figure 3 It is a left side view structural schematic diagram of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the corresponding position of the movable end cover of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the corresponding position of the stator of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the corresponding position of the mounting rack of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the corresponding position of the rectangular hollow groove of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the corresponding position of the heat dissipation fins of the present invention.

[0027] Figure 9 It is a structural schematic diagram of the corresponding position of the vertical oil guiding pipe of the present invention.

[0028] Figure 10 This is a schematic diagram of the structure at the corresponding position of the refrigeration ring of the present invention.

[0029] Figure 11 This is a schematic diagram of the structure at the corresponding position of the annular flow guide plate of the present invention.

[0030] Figure 12 This is a schematic diagram of the structure at the corresponding position of the oil inlet of the present invention.

[0031] Figure 13 This is a schematic diagram of the structure at the corresponding position of the annular oil guide groove of the present invention.

[0032] Figure 14 This is a schematic diagram of the structure at the corresponding position of the intermediate oil guide chamber of the present invention.

[0033] In the figure: 1. Outer protective housing; 101. First docking buckle; 2. Inner assembly pipe; 3. Limit end cover; 4. Inner positioning pipe; 5. Stator; 6. Movable end cover; 601. Second docking buckle; 7. Connecting bolt; 8. Arc-shaped intermediate plate; 9. Arc-shaped oil guide plate; 901. Annular oil guide groove; 902. Vertical installation groove; 10. Intermediate oil guide chamber; 1001. Oil inlet; 11. Side oil guide pipe; 12. Vertical oil guide pipe; 1201. Cooling oil discharge port; 13. Rectangular assembly seat; 14. Heat dissipation fins; 15. Check valve; 16. Locking valve; 17. Cooling oil flow pipe; 18. Annular oil guide pipe; 19. Assembly frame; 1901. Rectangular hollow groove; 1902. Spacing separation groove; 1903. Rectangular heat dissipation groove; 1904. Docking thread groove; 20. Annular flow guide plate; 21. Rectangular connecting strip; 22. Annular drainage plate; 2201. V-shaped drainage groove; 23. Annular shunt pipe; 24. Refrigeration ring; 25. Condensing pipe; 26. Docking insertion pipe. Detailed implementation manners

[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 14, the present invention provides a technical solution: an oil-cooled three-in-one motor housing, including an outer protective housing 1, a coating is provided on the outer wall of the outer protective housing 1. The outer protective housing 1 needs to be placed in an alkaline cleaning tank for cleaning treatment, and the outer protective housing 1 needs to be placed in an acidic cleaning tank to prevent corrosion. The outer protective housing 1 is placed in flowing clean water, and then an air gun is used to clean the residual liquid in the outer protective housing 1. An inner assembly pipe 2 is movably installed in the outer protective housing 1. Limiting end caps 3 are fixedly installed at the top and bottom of the inner assembly pipe 2. The inner assembly pipe 2 and the limiting end caps 3 form an I-shaped structure, and the structure composed of the inner assembly pipe 2 and the limiting end caps 3 is installed in the outer protective housing 1. A structure for oil flow is installed outside the inner assembly pipe 2 to realize the cooling of the inner assembly pipe 2, the inner positioning pipe 4 and the structures inside the inner positioning pipe 4. Limiting end caps 3 are fixedly installed at the top and bottom of the inner assembly pipe 2. An inner positioning pipe 4 is fixedly installed in the limiting end caps 3. The inner assembly pipe 2, the limiting end caps 3 and the inner positioning pipe 4 are of an integrally formed structure. A rotor structure is placed inside the structure composed of the inner assembly pipe 2, the limiting end caps 3 and the inner positioning pipe 4. A cooling structure is provided outside the structure composed of the inner assembly pipe 2, the limiting end caps 3 and the inner positioning pipe 4. A plurality of stators 5 are movably installed in the inner positioning pipe 4. The stators 5 cooperate with the rotor to improve the driving stability of the rotor. Movable end caps 6 are provided above and below the structure composed of the inner assembly pipe 2 and the limiting end caps 3. The movable end caps 6 are movably engaged in the outer protective housing 1. A part that is engaged in the limiting end cap 3 is provided on the side of the movable end cap 6 close to the outer protective housing 1, and the side of the movable end cap 6 close to the outer protective housing 1 is in contact with the end of the inner positioning pipe 4. A ring structure is provided at the bottom of the movable end cap 6, and the ring structure at the bottom of the movable end cap 6 is engaged above or below the structure composed of the limiting end cap 3 and the inner positioning pipe 4 to ensure the stability of the structure composed of the inner assembly pipe 2, the limiting end caps 3 and the inner positioning pipe 4 after the movable end cap 6 is engaged.

[0036] At the corresponding positions at the top and bottom of the outer protective housing 1's outer wall, first docking buttons 101 are provided. At the positions corresponding to the first docking buttons 101 on the outer wall of the movable end cap 6, second docking buttons 601 are provided. A connecting bolt 7 is provided between the first docking button 101 and the second docking button 601 for fixation. A connecting bolt 7 is provided between the first docking button 101 and the second docking button 601 for fixed connection to ensure the stability of the movable end cap 6 after being installed on the outer protective housing 1. One movable end cap 6 is fixedly installed on the top of the outer protective housing 1, and the other movable end cap 6 is fixedly installed on the bottom of the outer protective housing 1. An arc-shaped intermediate plate 8 and an arc-shaped oil guide plate 9 are movably installed outside the inner assembly pipe 2, and the structure composed of the arc-shaped intermediate plate 8 and the arc-shaped oil guide plate 9 is located inside the outer protective housing 1. The arc-shaped intermediate plate 8 and the arc-shaped oil guide plate 9 form an annular structure. A barrel-shaped structure is formed by two arc-shaped intermediate plates 8 and two arc-shaped oil guide plates 9 to ensure the fixing effect of the structure composed of the arc-shaped intermediate plate 8 and the arc-shaped oil guide plate 9 when installed on the inner assembly pipe 2. A plurality of annular oil guide grooves 901 are formed on the arc-shaped oil guide plate 9. The annular oil guide grooves 901 are semi-circular annular grooves. Oil flows in the annular oil guide grooves 901 to realize the driving of the temperature on the inner assembly pipe 2 by the oil. At the central position of the arc-shaped intermediate plate 8, an intermediate oil guide chamber 10 is provided. On both sides of the intermediate oil guide chamber 10, side oil guide pipes 11 connected to the intermediate oil guide chamber 10 are provided. On the side of the side oil guide pipe 11 away from the intermediate oil guide chamber 10, a vertical oil guide pipe 12 is provided, and the vertical oil guide pipe 12 is connected to the side oil guide pipe 11. The oil injected into the intermediate oil guide chamber 10 flows in the intermediate oil guide chamber 10 and moves along the direction of the side oil guide pipe 11. At the same time, the oil in the side oil guide pipe 11 will also continue to move and enter the vertical oil guide pipe 12. It separates in the vertical oil guide pipe 12. The cooling oil entering the vertical oil guide pipe 12 is discharged from the cooling oil discharge port 1201, flows in the annular oil guide grooves 901, and enters the vertical oil guide pipe 12, side oil guide pipe 11, and intermediate oil guide chamber 10 on the other side through the annular oil guide grooves 901. Vertically formed on the arc-shaped oil guide plate 9 are vertical installation grooves 902 for installing the vertical oil guide pipes 12. The vertical oil guide pipes 12 are fixedly installed in the vertical installation grooves 902, and the position of the cooling oil discharge port 1201 on the vertical oil guide pipe 12 corresponds to the position of the annular oil guide grooves 901 to ensure the normal flow of the cooling oil. At the position corresponding to the annular oil guide grooves 901 on the vertical oil guide pipe 12, cooling oil discharge ports 1201 are provided. On the front and back of the outer protective housing 1, rectangular assembly seats 13 are provided. The rectangular assembly seats 13 correspond to the positions of the intermediate oil guide chambers 10, and an oil inlet 1001 communicating with the rectangular assembly seats 13 is provided on the intermediate oil guide chamber 10. The rectangular assembly seats 13 are connected to the corresponding injection pipes and outlet pipes, thereby ensuring the flow of the cooling oil inside the outer protective housing 1.

[0037] The inner positioning tube 4 is provided with grooves corresponding to the shape of the stator 5, and a plurality of stators 5 are annularly arrayed with the central axis of the inner positioning tube 4 as the array center. The stator 5 is used to cooperate with the rotor, and the designed position of the stator 5 needs to follow the design of the motor housing.

[0038] A plurality of heat dissipation fins 14 along the track of the annular oil guide groove 901 are arranged in the annular oil guide groove 901, and the part of the heat dissipation fins 14 located in the arc-shaped oil guide plate 9 is attached to the outer wall of the inner assembly pipe 2. The heat dissipation fins 14 increase the contact area with the cooling oil, and the cooling oil better takes away the heat from the structure composed of the heat dissipation fins 14 and the arc-shaped oil guide plate 9, realizing the heat dissipation operation.

[0039] A check valve 15 is arranged at the bottom of one of the intermediate oil guide chambers 10, and a locking valve 16 is arranged at the bottom of the other intermediate oil guide chamber 10. Cooling oil flow pipes 17 are arranged at the bottoms of both the check valve 15 and the locking valve 16, and an annular oil guide pipe 18 is arranged between the two cooling oil flow pipes 17 for connection. The annular oil guide pipe 18 is arranged at a position near the bottom of the outer wall of the inner assembly pipe 2. The rectangular assembly seat 13 on one side of the locking valve 16 is sealed by a plug. The cooling oil entering one side of the locking valve 16 flows into the cooling oil flow pipe 17 and the annular oil guide pipe 18 through the opened locking valve 16, and then enters the check valve 15 on the other side and flows back into the intermediate oil guide chamber 10 at this position, thus realizing the circulation of the cooling oil.

[0040] An assembly frame 19 is fixedly installed on the outer wall of the outer protective shell 1, and a rectangular hollow groove 1901 is provided on the assembly frame 19. A plurality of spaced-apart grooves 1902 are also provided on the assembly frame 19. A rectangular heat dissipation groove 1903 is also provided on the assembly frame 19. A docking thread groove 1904 is provided on the rectangular hollow groove 1901. The assembly frame 19 is used for the installation of the outer protective shell 1, and the docking thread groove 1904 on the assembly frame 19 is used for docking installation. Bolts are installed in the docking thread groove 1904 to realize the assembly of the assembly frame 19 and the base. The design of the rectangular hollow groove 1901, the spaced-apart groove 1902 and the rectangular heat dissipation groove 1903 can reduce the weight of the assembly frame 19. At the same time, the reduction in the weight of the assembly frame 19 can ensure that the heat on the assembly frame 19 is better discharged, and the installation lock A sealing plug is installed on the rectangular assembly seat 13 on one side of the stop valve 16, and an injection pipe for injecting cooling oil is installed on the rectangular assembly seat 13 on which the one-way valve 15 is installed. The cooling oil is injected into the rectangular assembly seat 13 through the injection pipe. After the injection is completed, the hydraulic press is reinstalled at this position to provide power for the flow of cooling oil in the side oil guide pipe 11. The cooling oil entering the intermediate oil guide tank 10 flows along the channel in the intermediate oil guide tank 10 and enters the side oil guide pipes 11 on both sides. The cooling oil entering the side oil guide pipes 11 on both sides continues to flow into the vertical oil guide pipe 12. The cooling oil entering the vertical oil guide pipe 12 flows from the cooling oil discharge port 1201 into the annular oil guide groove 901, and takes away the heat on the arc-shaped oil guide plate 9 and the inner assembly pipe 2 through the heat dissipation fins 14 on the annular oil guide groove 901.

[0041] An annular guide plate 20 is arranged at the rear position of the inner wall of the rectangular assembly seat 13, and a plurality of rectangular connecting strips 21 are distributed in an annular array on the outer wall of the annular guide plate 20 with the central axis of the annular guide plate 20 as the array center. An annular guide plate 22 is fixedly installed on the inner wall of the annular guide plate 20, and an annular diverter pipe 23 is fixedly installed on the inner wall of the annular guide plate 22. A gap is left between the annular guide plate 20 and the inner wall of the rectangular assembly seat 13. The annular guide plate 20 guides and diverts the input of the cooling oil, and limits the inflow speed of the cooling oil. The annular diverter pipe 23 has a guiding effect, diverts the cooling oil, and the sum is gathered together to achieve mixing and diversion of the cooling oil, which has the effect of cooling the cooling oil.

[0042] A plurality of V-shaped drainage grooves 2201 are formed on the annular drainage plate 22 .

[0043] A refrigeration ring 24 is movably installed in the rectangular assembly seat 13, and a condenser 25 is provided on one side of the refrigeration ring 24 located in the rectangular assembly seat 13. A docking pipe 26 is fixedly installed on the outer wall of the refrigeration ring 24. The condenser 25 on the back of the refrigeration ring 24 is in contact with the intermediate oil guide tank 10. The intermediate oil guide tank 10 is cooled by the condenser 25, thereby achieving cooling of the cooling oil in the intermediate oil guide tank 10.

[0044] Working principle:

[0045] First step: The arc-shaped middle plate 8 and the arc-shaped oil guide plate 9 are installed outside the inner assembly pipe 2 and are located between the two limit end caps 3. Then, the outer protective housing 1 is sleeved outside the structure composed of the inner assembly pipe 2 and the limit end caps 3, and the movable end caps 6 are installed at the top and bottom of the outer protective housing 1. The protruding parts on the movable end caps 6 are engaged at the corresponding positions on the inner positioning pipe 4. The second docking buckle 601 on the movable end cap 6 and the first docking buckle 101 on the outer protective housing 1 are in corresponding positions and are connected and fixed by the connecting bolt 7 to form the motor housing body.

[0046] Second step: A sealing plug is installed on the rectangular assembly seat 13 on one side of the locking valve 16, and an injection pipe for injecting cooling oil is installed on the rectangular assembly seat 13 on the one-way valve 15. The cooling oil is injected into the rectangular assembly seat 13 through the injection pipe. After the injection is completed, a hydraulic press is reinstalled at this position to provide power for the flow of the cooling oil in the side oil guide pipe 11. The cooling oil entering the rectangular assembly seat 13 contacts the annular deflector 20. The V-shaped drainage grooves 2201 on the annular deflector 20 guide the cooling oil to ensure that the cooling oil flows on the surface of the annular deflector 20. Part of the cooling oil enters the annular shunt pipe 23 to flow, and the other part enters the gap between the annular deflector 20 and the structure composed of the rectangular assembly seat 13, realizing the diversion of the cooling oil. The cooling oil enters the middle oil guide chamber 10 more evenly. The cooling oil entering the middle oil guide chamber 10 flows along the channels in the middle oil guide chamber 10 and enters the side oil guide pipes 11 on both sides. The cooling oil entering the side oil guide pipes 11 on both sides continues to flow into the vertical oil guide pipe 12. The cooling oil entering the vertical oil guide pipe 12 flows out from the cooling oil discharge port 1201 and enters the annular oil guide groove 901, and the heat of the arc-shaped oil guide plate 9 and the inner assembly pipe 2 is taken away by the heat dissipation fins 14 on the annular oil guide groove 901. The cooling oil entering the annular oil guide groove 901 enters the side oil guide pipes 11 and the middle oil guide chamber 10 on the other side. The refrigeration ring 24 works to drive the condensing pipe 25 to become cold. The condensing pipe 25 cools the rectangular assembly seat 13 and the middle oil guide chamber 10 at this position, thereby cooling the cooling oil in the middle oil guide chamber 10 at this position. The cooling oil entering the middle oil guide chamber 10 on the other side flows along the locking valve 16, the cooling oil flow pipe 17, the annular oil guide pipe 18, and the one-way valve 15. The cooling oil passing through the one-way valve 15 flows back into the side oil guide pipe 11, realizing the circulation of the cooling oil and taking away the heat.

[0047] Step 3: Install pipelines on both of the two rectangular mounting bases 13. The locking valve 16 locks and seals. The oil pipeline provides power for the transportation of cooling oil. The cooling oil enters the intermediate oil guiding chamber 10, then passes through the side oil guiding pipe 11 and the vertical oil guiding pipe 12, and flows in the annular oil guiding groove 901, enters the intermediate oil guiding chamber 10 on the other side, and the cooling oil entering this position is discharged through the oil outlet pipe on the rectangular mounting base 13, thereby realizing another circulation mode of the cooling oil and taking away heat.

[0048] Step 4: When the motor housing is installed on the base, the docking threaded grooves 1904 on the mounting frame 19 are aligned with the corresponding screw holes on the base. Through the installation of bolts, the installation of the mounting frame 19 is realized. After the installation of the mounting frame 19 is completed, the rectangular hollow grooves 1901, the spaced-apart grooves 1902, and the rectangular heat dissipation grooves 1903 on the mounting frame 19 can all play a role in heat dissipation.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Oil-cooled three-in-one motor housing, characterized in that: It includes an outer protective housing (1), an inner assembly pipe (2) is movably installed inside the outer protective housing (1), limiting end caps (3) are fixedly installed at both the top and bottom of the inner assembly pipe (2), an inner positioning pipe (4) is fixedly installed inside the limiting end cap (3), a plurality of stators (5) are movably installed inside the inner positioning pipe (4), movable end caps (6) are arranged above and below the structure formed by the inner assembly pipe (2) and the limiting end caps (3), the movable end caps (6) are movably engaged inside the outer protective housing (1), first docking buckles (101) are arranged at corresponding positions at the top and bottom of the outer wall of the outer protective housing (1), second docking buckles (601) are arranged at positions corresponding to the first docking buckles (101) on the outer wall of the movable end cap (6), and a connecting bolt (7) is arranged between the first docking buckle (101) and the second docking buckle (601) for fixation. An arc-shaped intermediate plate (8) and an arc-shaped oil guide plate (9) are movably installed outside the inner assembly pipe (2), and the structure formed by the arc-shaped intermediate plate (8) and the arc-shaped oil guide plate (9) is located inside the outer protective housing (1). A plurality of annular oil guide grooves (901) are formed on the arc-shaped oil guide plate (9), a middle oil guide chamber (10) is arranged at the center position of the arc-shaped intermediate plate (8), side oil guide pipes (11) communicating with the middle oil guide chamber (10) are arranged on both sides of the middle oil guide chamber (10), a vertical oil guide pipe (12) is arranged on the side of the side oil guide pipe (11) away from the middle oil guide chamber (10), and the vertical oil guide pipe (12) is communicated with the side oil guide pipe (11). A vertical installation groove (902) for installing the vertical oil guide pipe (12) is vertically formed on the arc-shaped oil guide plate (9), a cooling oil discharge port (1201) is formed on the vertical oil guide pipe (12) at a position corresponding to the annular oil guide groove (901), rectangular assembly seats (13) are arranged on both the front and back of the outer protective housing (1), the positions of the rectangular assembly seats (13) and the middle oil guide chamber (10) correspond to each other, and an oil inlet (1001) communicating with the rectangular assembly seat (13) is formed on the middle oil guide chamber (10).

2. The oil-cooled three-in-one motor housing according to claim 1, wherein: The inner assembly pipe (2), the limiting end cap (3) and the inner positioning pipe (4) are of an integrally formed structure.

3. The oil-cooled three-in-one motor housing according to claim 2, characterized in that: Grooves corresponding to the shape of the stator (5) are formed on the inner positioning pipe (4), and a plurality of stators (5) are distributed in a circular array with the central axis of the inner positioning pipe (4) as the array center.

4. The oil-cooled three-in-one motor housing according to claim 3, wherein: A part that is engaged inside the limiting end cap (3) is arranged on the side of the movable end cap (6) close to the outer protective housing (1), and the side of the movable end cap (6) close to the outer protective housing (1) is in contact with the end of the inner positioning pipe (4).

5. The oil-cooled three-in-one motor housing according to claim 4, characterized in that: A plurality of heat dissipation fins (14) along the track of the annular oil guide groove (901) are arranged in the annular oil guide groove (901), and the part of the heat dissipation fin (14) located inside the arc-shaped oil guide plate (9) is in contact with the outer wall of the inner assembly pipe (2).

6. The oil-cooled three-in-one motor housing according to claim 5, wherein: One of the bottoms of the intermediate oil guide chambers (10) is provided with a one-way valve (15), and the bottom of the other intermediate oil guide chamber (10) is provided with a locking valve (16). Cooling oil flow pipes (17) are provided at the bottoms of the one-way valve (15) and the locking valve (16). An annular oil guide pipe (18) is provided between the two cooling oil flow pipes (17) for connection, and the annular oil guide pipe (18) is arranged at a position close to the bottom on the outer wall of the inner assembly pipe (2).

7. The oil-cooled three-in-one motor housing according to claim 6, characterized in that: An assembly frame (19) is fixedly installed on the outer wall of the outer protective housing (1). A rectangular hollow groove (1901) is formed in the assembly frame (19). A plurality of spaced-apart grooves (1902) are also formed in the assembly frame (19). A rectangular heat dissipation groove (1903) is also formed in the assembly frame (19). A docking thread groove (1904) is formed in the rectangular hollow groove (1901).

8. The oil-cooled three-in-one motor housing according to claim 7, characterized in that: An annular flow guide plate (20) is arranged at a position close to the rear of the inner wall of the rectangular assembly seat (13). A plurality of rectangular connection bars (21) are annularly and arrayedly distributed on the outer wall of the annular flow guide plate (20) with the central axis of the annular flow guide plate (20) as the array center. An annular drainage plate (22) is fixedly installed on the inner wall of the annular flow guide plate (20). An annular shunt pipe (23) is fixedly installed on the inner wall of the annular drainage plate (22). A gap is left between the annular flow guide plate (20) and the inner wall of the rectangular assembly seat (13).

9. The oil-cooled three-in-one motor housing according to claim 8, characterized in that: A plurality of V-shaped drainage grooves (2201) are formed in the annular drainage plate (22).

10. The oil-cooled three-in-one motor housing according to claim 9, characterized in that: A refrigeration ring (24) is movably installed in the rectangular assembly seat (13). A condensing pipe (25) is arranged on one side of the refrigeration ring (24) located in the rectangular assembly seat (13). A docking insertion pipe (26) is fixedly installed on the outer wall of the refrigeration ring (24).

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