Permanent magnet speed regulating device oil cooling structure

Abstract

The application relates to an oil cooling structure for a permanent magnet speed regulating device and relates to the technical field of permanent magnet speed regulating devices. The oil cooling structure for the permanent magnet speed regulating device comprises a shell, the inside of the shell is provided with a circulation pipe for surrounding a conductor rotor and a permanent magnet rotor, a plurality of groups of spraying holes for spraying the conductor rotor and the permanent magnet rotor are arranged on the circulation pipe and are spaced apart along the length direction of the circulation pipe; an oil inlet pipe is arranged on the shell and is communicated with the circulation pipe; an oil storage tank for storing cooling oil is arranged outside the shell; a power pump for enabling the cooling oil to enter the inside of the oil inlet pipe is arranged in communication between the oil storage tank and the oil inlet pipe; an oil outlet pipe communicated with the oil storage tank is arranged at the bottom of the shell; and a cooling assembly for cooling the cooling oil is arranged in communication between the power pump and the oil inlet pipe. The application has the effect of effectively cooling the conductor rotor and the permanent magnet rotor inside the permanent magnet speed regulator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of permanent magnet speed regulation devices, in particular to an oil cooling structure for a permanent magnet speed regulation device. BACKGROUND

[0002] The permanent magnet speed regulation device is a product of eddy current type permanent magnet coupling transmission, and its components mainly include a permanent magnet rotor, a conductor rotor and a speed regulation mechanism. The permanent magnet speed regulation device has the advantages of simple structure, reliable operation and energy saving, and is mainly applied to the energy saving of motor driving systems in the industries of petroleum, petrochemical, electric power and mining.

[0003] In the process of magnetic coupling transmission, due to driving by self-induction, eddy current loss and a large amount of heat will occur on the device, which causes the materials inside the device to gradually heat up, and the high-temperature working environment is easy to cause the permanent magnet rotor to demagnetize, thereby affecting the normal operation of the magnetic coupling. Therefore, it is particularly important to dissipate heat from the device.

[0004] In the related art, when the permanent magnet speed regulator is cooled by water cooling, a cooling water channel is usually arranged in the shell of the permanent magnet speed regulator, and cooling water is conveyed in the cooling water channel to cool the permanent magnet speed regulator.

[0005] For the related art in the above, the inventors have found that the cooling water channel can only cool the shell of the permanent magnet speed regulator, and the cooling effect on the conductor rotor and the permanent magnet rotor inside the permanent magnet speed regulator is poor, and thus needs to be improved. SUMMARY

[0006] In order to effectively cool the conductor rotor and the permanent magnet rotor inside the permanent magnet speed regulator, the present application provides an oil cooling structure for a permanent magnet speed regulation device.

[0007] The oil cooling structure for a permanent magnet speed regulation device provided by the present application adopts the following technical solution:

[0008] An oil cooling structure for a permanent magnet speed regulation device, comprising a shell, a circulation pipe for surrounding the conductor rotor and the permanent magnet rotor is arranged inside the shell, a plurality of groups of spray holes for spraying the conductor rotor and the permanent magnet rotor are arranged on the circulation pipe at intervals along the length direction of the circulation pipe; an oil inlet pipe is arranged on the shell and communicates with the circulation pipe, an oil storage tank for storing cooling oil is arranged outside the shell, a power pump for enabling the cooling oil to enter the inside of the oil inlet pipe is arranged in communication between the oil storage tank and the oil inlet pipe; an oil outlet pipe in communication with the oil storage tank is arranged at the bottom of the shell, and a cooling assembly for cooling the cooling oil is arranged in communication between the power pump and the oil inlet pipe.

[0009] The power pump guides the cooling oil in the oil storage tank into the cooling assembly for cooling treatment, the cooling oil after cooling is guided into the circulating pipe through the oil inlet pipe, and the conductor rotor and the permanent magnet rotor are sprayed through the spray holes, heat exchange is conducted between the cooling oil and the conductor rotor and the permanent magnet rotor, so that the conductor rotor and the permanent magnet rotor are effectively cooled; and the cooling oil in the shell is guided into the oil storage tank through the oil outlet pipe for storage, so that the cooling oil is cooled by the cooling assembly, and the recycling of the cooling oil is realized.

[0010] Preferably, the cooling assembly comprises a cooling tank, a communication part, a water inlet pipe and a water outlet pipe; the cooling tank is arranged between the power pump and the oil inlet pipe, the communication part is arranged in the cooling tank, and the communication part is arranged in communication between the power pump and the oil inlet pipe; the water inlet pipe and the water outlet pipe are both arranged in communication on the cooling tank, so as to replace the cooling water in the cooling tank.

[0011] By adopting the above technical scheme, the power pump guides the cooling oil in the oil storage tank into the communication part, the water inlet pipe and the water outlet pipe cooperate with each other, so that the cooling water flows in the cooling tank; the cooling oil exchanges heat with the cooling water through the communication part, so as to realize rapid cooling treatment of the cooling oil; in addition, the water inlet pipe and the water outlet pipe cooperate with each other to replace the cooling water in the cooling tank, so as to guarantee the cooling effect of the cooling water in the cooling tank.

[0012] Preferably, the communication part comprises two groups of communication pipes penetrating the cooling tank, two groups of flow guide cavities and a plurality of groups of shunt pipes arranged in the cooling tank; one of the communication pipes is in communication with the end of the power pump away from the oil storage tank, and the other communication pipe is in communication with the end of the oil inlet pipe away from the shell; the two groups of communication pipes and the two groups of flow guide cavities correspond to each other one by one, and each flow guide cavity is arranged in communication at the end of the corresponding communication pipe facing the other communication pipe; all the shunt pipes are arranged in communication between the two groups of flow guide cavities.

[0013] By adopting the above technical scheme, one cooling oil in the communication pipe is dispersed into a plurality of groups of cooling oil through the flow guide cavity and the shunt pipe, the heat exchange area of the cooling oil and the cooling water is increased, and the cooling effect of the cooling water on the cooling oil is improved.

[0014] Preferably, the shell is provided with a fixing frame for surrounding the conductor rotor and the permanent magnet rotor, the circulating pipe is located in the fixing frame, and the fixing frame is provided with a collecting assembly for collecting the cooling oil.

[0015] By adopting the technical scheme, the collecting assembly collects the cooling oil inside the shell, reduces the phenomenon that the cooling oil sprayed and the conductor rotor and the permanent magnet rotor are thrown to the inner wall of the shell, thereby reducing the waste of the cooling oil, and ensuring the recycling amount of the cooling oil.

[0016] Preferably, the collecting assembly comprises a fixed sleeve, two sets of collecting sleeves and an oil collecting pipe; the fixed sleeve is arranged on the fixed frame, and the circulating pipe is located inside the fixed sleeve; one of the two sets of collecting sleeves is arranged at one end of the fixed sleeve, and the other of the two sets of collecting sleeves is arranged at the other end of the fixed sleeve; the inner diameter of each of the two sets of collecting sleeves gradually decreases in the direction away from the fixed sleeve; and the oil collecting pipe is arranged in communication between the fixed sleeve and the oil outlet pipe.

[0017] By adopting the technical scheme, the fixed sleeve and the collecting sleeves cover the conductor rotor, the permanent magnet rotor and the circulating pipe, thereby reducing the phenomenon that the cooling oil is splashed to the inner wall of the shell; the shape of the collecting sleeves covers the side edges of the conductor rotor and the permanent magnet rotor away from each other, thereby reducing the phenomenon that the cooling oil is separated from the collecting assembly through the end of the collecting sleeves away from the fixed sleeve; in addition, the deformation of the collecting sleeves facilitates the flow of the cooling oil on the collecting sleeves and the fixed sleeve to the oil collecting pipe inside for rapid collection, thereby facilitating the oil collecting pipe to guide the collected cooling oil into the oil outlet pipe.

[0018] Preferably, the collecting assembly further comprises a plurality of oil baffle plates, wherein a part of the oil baffle plates are arranged at intervals on the inner wall of one of the two sets of collecting sleeves, and the other part of the oil baffle plates are arranged at intervals on the inner wall of the other of the two sets of collecting sleeves; and all the oil baffle plates are located on the side of the collecting sleeves away from the oil outlet pipe.

[0019] By adopting the technical scheme, the oil baffle plates reduce the possibility that the cooling oil is splashed out of the collecting sleeves, so as to retain the splashed cooling oil inside the collecting sleeves; at the same time, the oil baffle plates facilitate the cooling oil on the upper wall of the collecting sleeves to flow to the lower wall of the collecting sleeves along the height direction of the oil baffle plates, so as to facilitate the cooling oil to flow to the oil collecting pipe inside along the length direction of the collecting sleeves for rapid collection.

[0020] Preferably, the shell is provided with a vibration assembly for driving the collecting sleeves to vibrate; and the collecting sleeves are provided with a resonance assembly for strengthening the vibration.

[0021] By adopting the technical scheme, the vibration assembly drives the collecting sleeves to vibrate, and the resonance assembly strengthens the vibration of the collecting sleeves, so as to facilitate the rapid flow of the cooling oil on the collecting sleeves to the oil collecting pipe inside for collection, and reduce the amount of viscous cooling oil adhered to the collecting pipe.

[0022] Preferably, the vibration assembly comprises a collision protrusion, a rotating motor, a connecting rod and a hitting ball; the collision protrusion is arranged on the outer sidewall of the collecting sleeve, the rotating motor is arranged in the shell, the connecting rod is arranged on the output end of the rotating motor, and the hitting ball is arranged on the connecting rod and used for colliding with the collision protrusion.

[0023] By adopting the above technical scheme, the output end of the rotating motor drives the connecting rod and the hitting ball to rotate, the rotating hitting ball continuously collides with the collision protrusion, and the vibration of the collision protrusion promotes the whole collecting sleeve to vibrate, so that the cooling oil on the inner wall of the collecting sleeve gradually flows into the oil collecting pipe and is quickly collected.

[0024] Preferably, the vibration assembly comprises a soft strip and an elastic ball, the soft strip is arranged on the outer sidewall of the collecting sleeve, and the elastic ball is arranged on the soft strip.

[0025] By adopting the above technical scheme, when the collecting sleeve vibrates, the vibrating collecting sleeve promotes the soft strip to vibrate, the soft strip drives the elastic ball to shake, so as to promote the elastic ball and the collecting sleeve to collide, thereby promoting the collecting sleeve to vibrate, expanding the vibration range and vibration time of the collecting sleeve, and improving the vibration effect of the collecting sleeve.

[0026] Preferably, a plurality of groups of air vents are arranged on the shell, one group of the air vents is internally provided with a blowing fan, a negative pressure pipe is communicatively arranged on the oil outlet pipe, the end of the negative pressure pipe away from the oil outlet pipe is provided with an air vent ring, the air vent ring is arranged at the negative pressure end of the blowing fan, and the inner diameter of the air vent ring gradually increases towards the blowing fan.

[0027] By adopting the above technical scheme, the blowing fan blows air in the shell, promotes the air flow in and out of the shell, carries a large amount of heat in the shell through the flowing air flow, so as to dissipate the heat in the shell, thereby achieving the cooling effect of the shell; when the blowing fan works, the blowing fan drags the air flow at one end of the blowing fan to quickly move to the other end of the blowing fan, so that one end of the blowing fan is in a negative pressure state, so as to drive the air in the air vent ring and the negative pressure pipe to move towards the blowing fan, so that the connection part of the negative pressure pipe and the oil outlet pipe is in a negative pressure state, thereby promoting the cooling oil in the shell to quickly flow into the oil outlet pipe.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. By setting the oil tank, power pump and oil inlet pipe, the cooling oil is transported towards the inside of the circulation pipe; by setting the cooling assembly, the transported cooling oil is cooled; the cooled cooling oil in the circulation pipe is sprayed onto the conductor rotor and the permanent magnet rotor through the spray hole to achieve effective cooling of the conductor rotor and the permanent magnet rotor;

[0030] 2. By setting the fixed sleeve and the collection sleeve, the amount of cooling oil splashing onto the inner wall of the shell from the conductor rotor and the permanent magnet rotor is reduced; by the drainage of the fixed sleeve and the collection sleeve, the cooling oil is collected into the oil collecting pipe, and then the cooling oil is guided into the oil tank through the oil collecting pipe and the oil outlet pipe for storage and collection, so that the cooling oil can be recycled;

[0031] 3. By setting the vibration assembly to drive the collection sleeve to vibrate, and by setting the vibration assembly to enhance the vibration effect of the collection sleeve, the cooling oil on the collection sleeve is quickly flowed into the oil collecting pipe, so that the collection is facilitated and the waste caused by the adhesion of the viscous cooling oil to the collection pipeline is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structure diagram of an oil cooling structure of a permanent magnet speed regulating device according to an embodiment of the present application.

[0033] Figure 2 is a cross-sectional view along the direction of A-A in the figure. Figure 1

[0034] Figure 3 is a cross-sectional view along the direction of B-B in the figure. Figure 1

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1, shell; 101, rotating shaft; 102, conductor rotor; 103, permanent magnet rotor; 11, circulation pipe; 111, spray hole; 12, oil inlet pipe; 13, oil outlet pipe; 14, fixed frame; 15, ventilation port; 151, blower fan; 1511, fixed rod; 16, negative pressure pipe; 17, ventilation ring sleeve; 2, oil tank; 21, power pump; 3, cooling assembly; 31, cooling box; 32, communication part; 321, communication pipe; 322, flow guide cavity; 323, shunt pipe; 33, water inlet pipe; 34, water outlet pipe; 4, collection assembly; 41, fixed sleeve; 42, collection sleeve; 43, oil collecting pipe; 44, oil baffle; 5, vibration assembly; 51, collision protrusion; 52, rotating motor; 53, connecting rod; 54, impact ball; 6, vibration assembly; 61, soft strip; 62, elastic ball. DETAILED DESCRIPTION

[0037] The following will be described in conjunction with the drawings​​Figures 1-3 The application is further described in detail.

[0038] The application discloses an oil cooling structure for a permanent magnet speed regulating device to enhance the cooling effect on the conductor rotor and the permanent magnet rotor.

[0039] With reference to Figure 1 and Figure 2 , the oil cooling structure for the permanent magnet speed regulating device comprises a shell 1, in the embodiment, the inside of the shell 1 is provided with a conductor rotor 102 and a permanent magnet rotor 103 through a rotating shaft 101. The top of the shell 1 is fixedly provided with an oil inlet pipe 12, the end of the oil inlet pipe 12 in the inside of the shell 1 is communicatively provided with a circulating pipe 11, the circulating pipe 11 spirally surrounds the outside of the conductor rotor 102 and the permanent magnet rotor 103. The side wall of the circulating pipe 11 towards the conductor rotor 102 and the permanent magnet rotor 103 is provided with a plurality of groups of spray holes 111, and all the spray holes 111 are spaced apart along the length direction of the circulating pipe 11.

[0040] With reference to Figure 1 and Figure 2 , one side of the outside of the shell 1 is provided with an oil storage tank 2, the inside of the oil storage tank 2 is filled with cooling oil, in the embodiment, the medium composition of the cooling oil is the same as that of the lubricating oil. The outside of the oil storage tank 2 is provided with a power pump 21 which is in communication with the inside of the oil storage tank 2, and a cooling assembly 3 is communicatively installed between the output end of the power pump 21 and the oil inlet pipe 12, so that the cooled cooling oil is delivered to the inside of the oil inlet pipe 12 through the power pump 21.

[0041] With reference to Figure 2 and Figure 3 , the cooling assembly 3 comprises a cooling tank 31, a communication part 32, an inlet water pipe 33 and an outlet water pipe 34. The cooling tank 31 is located between the power pump 21 and the oil inlet pipe 12, and the inlet water pipe 33 and the outlet water pipe 34 are communicatively installed on the cooling tank 31. In the embodiment, the inside of the cooling tank 31 is filled with cooling water, and the inlet water pipe 33 and the outlet water pipe 34 cooperate to continuously replace the cooling water in the inside of the cooling tank 31.

[0042] With reference to Figure 2 and Figure 3 , the communication part 32 is fixedly inserted into the cooling tank 31, and the communication part 32 comprises two groups of communication pipes 321, two groups of flow guide cavities 322 and a plurality of groups of shunt pipes 323. One group of the communication pipes 321 is fixedly inserted into one end of the length direction of the cooling tank 31, and the communication pipe 321 is in communication with the output end of the power pump 21. The other group of the communication pipes 321 is fixedly inserted into the other end of the cooling tank 31, and the communication pipe 321 is in communication with the oil inlet pipe 12.

[0043] With reference to Figure 2 and Figure 3The two groups of flow guide cavities 322 are hollow structures, the two groups of flow guide cavities 322 and the two groups of communication pipes 321 are one-to-one corresponding, and each group of flow guide cavities 322 is communicated and mounted to the end of the corresponding communication pipe 321 towards the other group of communication pipes 321. All the shunt pipes 323 are located inside the cooling box 31, all the shunt pipes 323 are communicated and mounted between the two groups of flow guide cavities 322, and the inner diameter size of all the shunt pipes 323 is smaller than the inner diameter size of the communication pipe 321.

[0044] Referring to Figure 2 and Figure 3 , a plurality of groups of air vents 15 are provided on the shell 1, and one group of air vents 15 is fixedly installed with a blower fan 151 inside, so as to blow air flow to the inside of the shell 1, thereby realizing the continuous exchange of gas inside the shell 1.

[0045] Referring to Figure 2 and Figure 3 , a plurality of groups of fixed rods 1511 are glued and fixed to the end of the blower fan 151 away from the inside of the shell 1, and all the fixed rods 1511 are spaced apart along the circumference of the blower fan 151. The end of all the fixed rods 1511 away from the blower fan 151 is commonly glued and connected with a ventilation ring 17, and the inner diameter size of the ventilation ring 17 gradually decreases towards the end away from the blower fan 151. The end of the ventilation ring 17 away from the blower fan 151 is glued and connected with a negative pressure pipe 16, and the end of the negative pressure pipe 16 away from the ventilation ring 17 is communicated with the inside of the oil outlet pipe 13.

[0046] Referring to Figure 2 and Figure 3 , when the blower fan 151 blows air to the inside of the shell 1, the end of the blower fan 151 close to the ventilation ring 17 is in a state of negative pressure, so that the blower fan 151 drags the air flow inside the ventilation ring 17 and the negative pressure pipe 16 to move towards the direction close to the blower fan 151, so that the communication part of the negative pressure pipe 16 and the oil outlet pipe 13 is in a state of negative pressure, thereby facilitating the rapid introduction of the cooling oil inside the shell 1 into the inside of the oil outlet pipe 13 for discharge.

[0047] Referring to Figure 2 and Figure 3 , a fixed frame 14 is welded and fixed inside the shell 1, and the conductor rotor 102, the permanent magnet rotor 103 and the circulation pipe 11 are located inside the fixed frame 14. The fixed frame 14 is installed with a collection assembly 4 for collecting the cooling oil inside the shell 1.

[0048] Referring to Figure 2 and Figure 3The collecting assembly 4 comprises a fixed sleeve 41, two sets of collecting sleeves 42, an oil collecting pipe 43 and several sets of oil blocking plates 44. The fixed sleeve 41 is welded to the fixed frame 14 and sleeved on the outside of the circulation pipe 11, and the circulation pipe 11 penetrates the fixed sleeve 41 towards the end of the oil inlet pipe 12. The oil collecting pipe 43 is connected between the fixed sleeve 41 and the oil outlet pipe 13 to facilitate the guiding of the cooling oil between the fixed sleeve 41 into the inside of the oil outlet pipe 13.

[0049] Referring to Figure 2 and Figure 3 One set of the collecting sleeves 42 is welded to one end of the fixed sleeve 41 in the length direction, and the other set of the collecting sleeves 42 is welded to the other end of the fixed sleeve 41. The inner diameter of each set of the fixed sleeve 41 gradually decreases towards the direction away from the fixed sleeve 41 to facilitate the collection of the cooling oil thrown out by the conductor rotor 102 and the permanent magnet rotor 103.

[0050] Referring to Figure 2 and Figure 3 One part of the oil blocking plates 44 is welded to the inner side wall of one set of the collecting sleeves 42, and the other part of the oil blocking plates 44 is welded to the inner side wall of the other set of the collecting sleeves 42. All the oil blocking plates 44 are spaced along the length direction of the collecting sleeves 42 and are located on the side of the collecting sleeves 42 away from the oil outlet pipe 13.

[0051] Referring to Figure 2 and Figure 3 The vibration assembly 5 is installed inside the shell 1 and comprises a collision protrusion 51, a rotating motor 52, a connecting rod 53 and a striking ball 54. The collision protrusion 51 is fixedly connected to the outer side wall of the collecting sleeve 42. The rotating motor 52 is fixedly installed on the inner side wall of the shell 1. The connecting rod 53 is fixedly installed on the output end of the rotating motor 52. The striking ball 54 is fixedly installed on the end of the connecting rod 53 away from the rotating motor 52.

[0052] Referring to Figure 2 and Figure 3 When the output end of the rotating motor 52 rotates, the connecting rod 53 is driven to rotate the striking ball 54 around the output end of the rotating motor 52. The striking ball 54 collides with the collision protrusion 51 to cause the vibration of the collecting sleeve 42, so as to facilitate the rapid guiding of the cooling oil inside the collecting sleeve 42 into the inside of the fixed sleeve 41 and the oil collecting pipe 43.

[0053] Referring to Figure 2 and Figure 3The collecting sleeve 42 is provided with a plurality of sets of the complex vibration assembly 6, and all the complex vibration assemblies 6 are distributed along the length direction of the collecting sleeve 42. The complex vibration assembly 6 comprises a soft strip 61 and an elastic ball 62. In the embodiment, the soft strip 61 is a rubber strip which is easy to bend, and the elastic ball 62 can be made of rubber with good elasticity. The soft strip 61 is connected to the outer side wall of the collecting sleeve 42 by gluing, and the elastic ball 62 is connected to the soft strip 61 by gluing.

[0054] With reference to Figure 2 and Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 Figure 2 Figure 3 When the collecting sleeve 42 vibrates, the vibration force of the collecting sleeve 42 causes the soft strip 61 to shake, and the shaking soft strip 61 causes the elastic ball 62 to collide with the side wall of the collecting sleeve 42, thereby further causing the collecting sleeve 42 to vibrate.

[0055] The implementation principle of the oil cooling structure of the permanent magnet speed regulating device is as follows:

[0056] The power pump 21 is started, and the power pump 21 delivers the cooling oil in the oil storage tank 2 to the inside of the communicating pipe 321. The cooling oil in the communicating pipe 321 is delivered to the inside of another communicating pipe 321 through the flow guide cavity and the shunt pipe 323. In the process of circulation of the cooling oil through the communicating pipe 321, the flow guide cavity and the shunt pipe 323, the cooling water in the cooling tank 31 exchanges heat with the cooling water in the cooling tank 31, so as to reduce the temperature of the cooling oil introduced into the oil inlet pipe 12 through the communicating pipe 321. The cooled cooling oil sprays the conductor rotor 102 and the permanent magnet rotor 103 through the spray holes 111 on the circulating pipe 11, so as to effectively cool the conductor rotor 102 and the permanent magnet rotor 103.

[0057] In the process of movement of the conductor rotor 102 and the permanent magnet rotor 103, the cooling oil adhered to the conductor rotor 102 and the permanent magnet rotor 103 is thrown off to the fixed sleeve 41 and the collecting sleeve 42, and finally flows into the oil collecting pipe 43 for collection. The oil collecting pipe 43 delivers the collected cooling oil to the inside of the oil storage tank 2 through the oil outlet pipe 13, so as to recycle the cooling oil.

[0058] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. An oil cooling structure for a permanent magnet speed regulating device, comprising a housing (1); characterized in that: The shell (1) is internally provided with a circulation pipe (11) for surrounding the conductor rotor (102) and the permanent magnet rotor (103), a plurality of groups of spray holes (111) for spraying the conductor rotor (102) and the permanent magnet rotor (103) are arranged on the circulation pipe (11) and are spaced apart along the length direction of the circulation pipe (11); The shell (1) is internally provided with a fixing frame (14) for surrounding the conductor rotor (102) and the permanent magnet rotor (103), the circulation pipe (11) is located inside the fixing frame (14), and the fixing frame (14) is provided with a collection assembly (4) for collecting cooling oil; The collection assembly (4) comprises a fixed sleeve (41), two groups of collection sleeves (42) and an oil collecting pipe (43); the fixed sleeve (41) is arranged on the fixing frame (14), and the circulation pipe (11) is located inside the fixed sleeve (41); one group of the collection sleeves (42) is arranged at one end of the fixed sleeve (41), the other group of the collection sleeves (42) is arranged at the other end of the fixed sleeve (41), and the inner diameter of each collection sleeve (42) gradually decreases in the direction away from the fixed sleeve (41); the oil collecting pipe (43) is communicatively arranged between the fixed sleeve (41) and the oil outlet pipe (13); The shell (1) is internally provided with a vibration assembly (5) for driving the collection sleeve (42) to vibrate; The vibration assembly (5) comprises a collision protrusion (51), a rotating motor (52), a connecting rod (53) and a collision ball (54); the collision protrusion (51) is arranged on the outer side wall of the collection sleeve (42), the rotating motor (52) is arranged inside the shell (1), the connecting rod (53) is arranged at the output end of the rotating motor (52), and the collision ball (54) is arranged on the connecting rod (53) and used for colliding with the collision protrusion (51).

2. The oil cooling structure for a permanent magnet speed regulating device according to claim 1, characterized in that: The shell (1) is provided with an oil inlet pipe (12) in communication with the circulation pipe (11), the shell (1) is externally provided with an oil storage tank (2) for storing cooling oil, a power pump (21) for enabling the cooling oil to enter the oil inlet pipe (12) is communicatively arranged between the oil storage tank (2) and the oil inlet pipe (12); the bottom of the shell (1) is provided with an oil outlet pipe (13) in communication with the oil storage tank (2), and a cooling assembly (3) for cooling the cooling oil is communicatively arranged between the power pump (21) and the oil inlet pipe (12).

3. The oil cooling structure for a permanent magnet speed control device according to claim 2, characterized in that: The cooling assembly (3) comprises a cooling box (31), a communication part (32), a water inlet pipe (33) and a water outlet pipe (34); the cooling box (31) is arranged between the power pump (21) and the oil inlet pipe (12), the communication part (32) is located inside the cooling box (31), and the communication part (32) is communicatively arranged between the power pump (21) and the oil inlet pipe (12); the water inlet pipe (33) and the water outlet pipe (34) are both communicatively arranged on the cooling box (31) and used for replacing the cooling water in the cooling box (31).

4. The oil cooling structure for a permanent magnet speed regulating device according to claim 3, characterized in that: The communication part (32) includes two groups of communication pipes (321) penetrating the cooling box (31), two groups of flow guide cavities (322) and several groups of shunt pipes (323) arranged inside the cooling box (31); one group of the communication pipes (321) is communicated with the end of the power pump (21) away from the oil tank (2), and the other communication pipe (321) is communicated with the end of the oil inlet pipe (12) away from the shell (1); the two groups of communication pipes (321) and the two groups of flow guide cavities (322) are one-to-one corresponding, and each flow guide cavity (322) is communicated with the end of the corresponding communication pipe (321) towards the other communication pipe (321); all the shunt pipes (323) are arranged between the two groups of flow guide cavities (322).

5. The oil cooling structure for a permanent magnet speed regulating device according to claim 1, characterized in that: The collecting assembly (4) further includes several oil baffle plates (44), wherein a part of the oil baffle plates (44) are arranged on the inner side wall of one group of collecting sleeves (42) at intervals, and another part of the oil baffle plates (44) are arranged on the inner side wall of the other group of collecting sleeves (42) at intervals, and all the oil baffle plates (44) are located on the side of the collecting sleeve (42) away from the oil outlet pipe (13).

6. The oil cooling structure for a permanent magnet speed control device according to claim 5, characterized in that: The collecting sleeve (42) is provided with a complex vibration assembly (6) for strengthening vibration.

7. The oil cooling structure for a permanent magnet speed control device according to claim 6, characterized in that: The complex vibration assembly (6) includes a soft strip (61) and an elastic ball (62), the soft strip (61) is arranged on the outer side wall of the collecting sleeve (42), and the elastic ball (62) is arranged on the soft strip (61).

8. The oil cooling structure for a permanent magnet speed control device according to claim 1, characterized by: A plurality of ventilation openings (15) are provided on the shell (1), and a group of the ventilation openings (15) are provided with a blowing fan (151); a negative pressure pipe (16) is arranged on the oil outlet pipe (13), and a ventilation ring (17) is arranged at the end of the negative pressure pipe (16) away from the oil outlet pipe (13), the ventilation ring (17) is arranged on the negative pressure end of the blowing fan (151), and the inner diameter of the ventilation ring (17) gradually increases towards the blowing fan (151).

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