Electric motor rotor cryogenic treatment device and its application in rotor cold assembly

Abstract

The present invention discloses a motor rotor cryogenic treatment device and its application in rotor cold assembly, specifically relates to the field of motor assembly technology, including a cryogenic treatment box, a material taking port is opened on the top of the cryogenic treatment box, and a driving mechanism is arranged inside the cryogenic treatment box, which is used to rotate with a cryogenic medium during cryogenic treatment. The present invention sets a driving mechanism and a temperature treatment mechanism, so that each temperature treatment mechanism can drive the corresponding rotor workpiece to rotate, so that the cryogenic treatment medium can be evenly sprayed on the rotor workpiece to increase the contact area and contact time between the cryogenic medium and the rotor surface, so that the temperature distribution on the rotor surface is uniform, avoiding the uneven distribution of additional stress on the material due to uneven temperature distribution, and avoiding the deformation of the rotor due to the rapid change of temperature during the cryogenic treatment process, which affects its dimensional accuracy and shape.

Description

Technical Field

[0001] The present invention relates to the technical field of motor assembly, and more specifically, to a deep cold treatment device for a motor rotor and its application in rotor cold assembly. Background Art

[0002] Cryogenic treatment technology is a new technology developed in the 1960s based on ordinary cold treatment (-100~0℃). Cryogenic treatment methods are divided into two types: liquid method and gas method. The liquid method is to put the workpiece directly into liquid nitrogen, and the treatment temperature is -150℃. The disadvantage is that the thermal shock is large, and sometimes even causes the workpiece to crack; the gas method is to use the latent heat of liquid nitrogen and the heat absorption of low-temperature nitrogen to cool, and the treatment temperature reaches -196℃, and the treatment effect is better.

[0003] A Chinese patent with application number CN202310471026.3 discloses a motor rotor assembly device and method, including a support platform and an assembly mechanism fixedly mounted on the support platform, the assembly mechanism including a magnetic steel feeding module, a glue spraying module, a detection module and a rotor driving module, the rotor driving module including a rotating bracket, a rotating shaft rotatably connected to the rotating bracket, a first pulley and a motor rotor fixedly connected to the rotating shaft, the rotor driving module also including a first motor, an output end of the first motor being cooperatively connected to a second pulley, the first pulley and the second pulley being connected via a belt drive; a plurality of N-pole magnetic steel mounting grooves and S-pole magnetic steel mounting grooves are arranged on the motor rotor at preset intervals, and the magnetic steel can be automatically assembled to the motor rotor without the need for manual gluing and manual pasting of the magnetic steel, the degree of automation is high, and production efficiency can be improved.

[0004] With the development of cryogenic assembly technology, more and more motor manufacturers have begun to use cryogenic treatment to assemble rotors. However, in the process of cryogenic treatment of rotors using the gas method, the cryogenic medium cannot be evenly sprayed on the rotor surface, resulting in uneven temperature distribution on the rotor surface, which will cause additional uneven stress distribution on the material, causing the temperature to change drastically, causing the rotor to deform, affecting its dimensional accuracy and shape, and in the process of taking and discharging the rotor, the cryogenic medium in the cryogenic treatment device will leak, resulting in a decrease in the cryogenic treatment effect, affecting the treatment efficiency, and causing pollution to the surrounding environment and posing a health threat to the operators.

[0005] The present invention provides a motor rotor cryogenic treatment device and its application in rotor cold assembly, aiming to solve the problems that uneven temperature distribution on the rotor surface causes deformation of the rotor, affects its dimensional accuracy and shape, and that during the process of taking and discharging the rotor, cryogenic medium in the cryogenic treatment device leaks, resulting in a decrease in the cryogenic treatment effect and affecting the treatment efficiency. Summary of the invention

[0006] The object of the present invention is to provide a motor rotor cryogenic treatment device and its application in rotor cold assembly, so as to solve the problems proposed in the above-mentioned background technology that the temperature distribution on the rotor surface is uneven, causing the rotor to deform and affecting its dimensional accuracy and shape, and during the process of taking and discharging the rotor, the cryogenic medium in the cryogenic treatment device will leak, resulting in a decrease in the cryogenic treatment effect and affecting the treatment efficiency.

[0007] To achieve the above object, the present invention provides the following technical solution: a motor rotor cryogenic treatment device, comprising a cryogenic treatment box, a material taking port is provided on the top of the cryogenic treatment box, and further comprising:

[0008] A driving mechanism, the driving mechanism is arranged inside the cryogenic treatment box and is used to rotate in conjunction with the cryogenic medium during the cryogenic treatment;

[0009] A temperature treatment mechanism, which is disposed above the driving mechanism and is used to rotate the rotor during the cryogenic treatment process;

[0010] The sealed material taking mechanism is arranged on the temperature treatment mechanism and is used to seal the temperature treatment mechanism at the material taking port when the rotor takes in and discharges materials.

[0011] Preferably, the driving mechanism includes a driving disk rotatably connected to the bottom inner side of the cryogenic treatment box, a driving groove is provided at the bottom of the driving disk, an impeller is rotatably sleeved inside the driving groove on the outer wall of the driving disk, a driving gear is fixedly connected to the top of the impeller, a plurality of first rotating grooves are evenly provided on the top of the driving disk, each of the first rotating grooves is communicated with the driving groove, and a driven gear meshing with the driving gear is rotatably connected in each of the first rotating grooves.

[0012] Preferably, the temperature treatment mechanism is a plurality of groups, which are arranged in each of the first rotating grooves, including a friction disk rotatably connected to the inside of the first rotating groove, a second rotating groove is provided at the bottom of the friction disk, a rotating sleeve is rotatably sleeved inside the second rotating groove on the outer wall of the friction disk, and a first elastic member is connected between the bottom of the rotating sleeve and the driven gear.

[0013] Preferably, a limit groove is provided on the top of the friction disk, and a support sealing plate is rotatably connected inside the limit groove, and a limit ring is fixedly connected to the top of the support sealing plate. A third groove is provided on the inner top of the cryogenic treatment box, and a rotating disk is rotatably connected inside the third groove. A plurality of limit grooves are evenly provided on the bottom of the rotating disk, and the number of the limit grooves is the same as that of the first grooves and the positions correspond, and each of the support sealing plates is slidably connected in the corresponding limit groove through a corresponding limit ring.

[0014] Preferably, the third rotating groove corresponds to the position of the feeding port, the rotating disk can block the feeding port, the bottom of the feeding port and the top of each of the limiting rings are provided with wedge surfaces that can cooperate with each other, and the rotating disk can make the limiting slide groove coincide with the feeding port during rotation, and can make the corresponding limiting ring extend into the interior of the feeding port.

[0015] Preferably, the sealing and material-collecting mechanism includes a sealing plate, a guide groove is provided at the bottom of the supporting sealing plate, the sealing plate is rotatably connected in the guide groove, the sealing plate and the supporting sealing plate are arranged in an arc shape, and the sealing plate and the supporting sealing plate can form a cylinder, the outer peripheral side of the sealing plate is axially fixedly connected with a baffle, the baffle is used to limit the sealing plate from completely entering the guide groove, the guide groove is internally sleeved with a second elastic member, one end of the second elastic member is fixedly connected to the top of the sealing plate, and the other end of the second elastic member is fixedly connected to the top of the guide groove, and the sealing plate can slide to the bottom of the supporting sealing plate and fit into the bottom of the limiting rotation groove.

[0016] Preferably, a liquid inlet connected to the driving groove is provided on the outer side of the cryogenic treatment box, an annular chamber is provided inside the cryogenic treatment box, and a connecting groove connecting the annular chamber and the driving groove is provided inside the cryogenic treatment box, and the cryogenic medium can enter the annular chamber through the connecting groove after driving the impeller to rotate through the liquid inlet;

[0017] A plurality of groups of liquid spray ports connected to the annular chamber are evenly provided on the inner side of the cryogenic treatment box, and the liquid spray ports are used to spray cryogenic medium on the inner side of the cryogenic treatment box, and the opening of each supporting sealing plate faces the direction of the liquid spray ports.

[0018] Preferably, the driving mechanism also includes a liquid nitrogen tank, a circulating pump is installed at the bottom of the liquid nitrogen tank, the circulating pump is connected to the interior of the liquid nitrogen tank, the output end of the circulating pump is connected to the liquid inlet through a pipeline, the interior of the liquid nitrogen tank is connected to a heat exchanger through a pipeline, and the heat exchanger is connected to the inner side of the cryogenic treatment box through a pipeline.

[0019] Preferably, an installation chamber is fixedly connected to the bottom of the cryogenic treatment box, a motor for driving the drive disk to rotate is installed inside the installation chamber, and the output end of the motor extends to the interior of the cryogenic treatment box and is fixedly connected to the bottom of the drive disk.

[0020] The invention also provides an application of a motor rotor cryogenic treatment device in rotor cold assembly.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The present invention can drive each driven gear to rotate through the driving gear during the cryogenic treatment process by setting the driving mechanism and the temperature treatment mechanism. During the rotation of the driven gear, the friction disk is driven to rotate by the friction force, so that each temperature treatment mechanism can drive the corresponding rotor workpiece to rotate, so that the cryogenic treatment medium can be evenly sprayed on the rotor workpiece to increase the contact area and contact time between the cryogenic medium and the rotor surface, so that the temperature distribution on the rotor surface is uniform, avoiding the uneven distribution of additional stress on the material due to the uneven temperature distribution, and avoiding the deformation of the rotor due to the rapid temperature change during the cryogenic treatment process, which affects its dimensional accuracy and shape;

[0023] 2. The present invention provides a sealing material-feeding mechanism. When it is necessary to feed and discharge materials, the limiting collar can be extended into the feeding port, the elastic force of the first elastic member and the second elastic member is released, and the friction between the sealing plate and the limiting rotating groove becomes smaller. At this time, the sealing plate will extend from the inside of the guide groove back to the initial position under the torsional rebound action of the second elastic member, and wrap the rotor workpiece, thereby preventing the cryogenic medium from leaking through the feeding port, avoiding pollution to the surrounding environment and health threats to operators, ensuring the continuity and stability of the cryogenic treatment process, and thus the cryogenic treatment effect and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a cross-sectional view of the internal structure of the cryogenic treatment box of the present invention.

[0026] Figure 3 It is a partial structural cross-sectional view of the cryogenic treatment box of the present invention.

[0027] Figure 4 This is a bottom sectional view of the cryogenic treatment box of the present invention.

[0028] Figure 5 This is a sectional view of a portion of the drive disk of the present invention.

[0029] Figure 6It is a schematic diagram of the structure of the temperature processing mechanism and the sealing material taking mechanism of the present invention.

[0030] Figure 7 It is an exploded view of the temperature processing mechanism and the sealing and material taking mechanism of the present invention.

[0031] Figure 8 It is a cross-sectional view of the temperature processing mechanism and the sealing and material taking mechanism of the present invention.

[0032] Fig. 9 It is a schematic diagram of the structure of the rotating disk of the present invention.

[0033] Fig.10 This is a schematic diagram of the rotor assembly structure of the present invention.

[0034] The reference numerals are: 1, cryogenic treatment box; 11, material taking port; 12, third rotating trough; 13, installation chamber; 14, motor;

[0035] 2. driving mechanism; 21. driving disk; 22. driving groove; 23. impeller; 24. driving gear; 25. first rotating groove; 26. driven gear; 27. liquid inlet; 28. annular chamber; 29. ​​connecting groove; 210. liquid spraying port; 211. liquid nitrogen tank; 212. circulating pump; 213. heat exchanger;

[0036] 3. Temperature treatment mechanism; 31. Friction disc; 32. Second rotating groove; 33. Rotating sleeve; 34. First elastic member; 35. Position-limiting rotating groove; 36. Support sealing plate; 37. Position-limiting sleeve ring; 38. Rotating disc; 39. Position-limiting slide groove;

[0037] 4. Sealing material taking mechanism; 41. Sealing plate; 42. Guide groove; 43. Stop bar; 44. Second elastic member;

[0038] 5. Robot; 6. Pressing device; 7. Rotor loading device; 8. Shaft loading device. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] During the process of cryogenic treatment of the rotor using the gas method, the cryogenic medium cannot be evenly sprayed on the rotor surface, resulting in uneven temperature distribution on the rotor surface. This will cause additional uneven stress distribution on the material, causing the temperature to change drastically, causing the rotor to deform and affecting its dimensional accuracy and shape.

[0041] Embodiment 1

[0042] refer to Figure 1 and 2 A motor rotor cryogenic treatment device according to an embodiment of the present invention comprises a cryogenic treatment box 1, and a material taking port 11 is opened at the top of the cryogenic treatment box 1.

[0043] refer to Figure 4 - Figure 7 , also includes a driving mechanism 2, which is arranged inside the cryogenic treatment box 1 and is used to rotate with the cryogenic medium during cryogenic treatment, including a driving disk 21 rotatably connected to the bottom of the inner side of the cryogenic treatment box 1, a driving groove 22 is provided at the bottom of the driving disk 21, and an impeller 23 is rotatably sleeved inside the driving groove 22 on the outer wall of the driving disk 21, a driving gear 24 is fixedly connected to the top of the impeller 23, and a plurality of first rotating grooves 25 are evenly provided on the top of the driving disk 21, each of the first rotating grooves 25 is connected to the driving groove 22, and a driven gear 26 meshing with the driving gear 24 is rotatably connected in each first rotating groove 25.

[0044] refer to Figure 2 and Figure 3 The bottom of the cryogenic treatment box 1 is fixedly connected with an installation chamber 13, and a motor 14 for driving the driving disk 21 to rotate is installed inside the installation chamber 13. The output end of the motor 14 extends to the inside of the cryogenic treatment box 1 and is fixedly connected to the bottom of the driving disk 21.

[0045] refer to Figure 5 - Fig.10, also includes a temperature treatment mechanism 3, the temperature treatment mechanism 3 is arranged above the driving mechanism 2, and is used to rotate the rotor during the cryogenic treatment process. The temperature treatment mechanism 3 is a plurality of groups, which are arranged in each first rotating groove 25, including a friction disk 31 rotatably connected to the inside of the first rotating groove 25, a second rotating groove 32 is provided at the bottom of the friction disk 31, a rotating sleeve 33 is rotatably sleeved inside the second rotating groove 32 on the outer wall of the friction disk 31, a first elastic member 34 is connected between the bottom of the rotating sleeve 33 and the driven gear 26, a limited rotating groove 35 is provided at the top of the friction disk 31, a support sealing plate 36 is rotatably connected to the inside of the limited rotating groove 35, and a limited sleeve ring 37 is fixedly connected to the top of the support sealing plate 36, and the inner part of the cryogenic treatment box 1 A third rotating groove 12 is provided on the top of the side, and a rotating disk 38 is rotatably connected inside the third rotating groove 12. A plurality of limiting slide grooves 39 are evenly provided on the bottom of the rotating disk 38. The number of the limiting slide grooves 39 is the same as that of the first rotating groove 25 and the positions correspond. Each supporting sealing plate 36 is slidably connected in the corresponding limiting slide groove 39 through a corresponding limiting ring 37. The third rotating groove 12 corresponds to the position of the feeding port 11. The rotating disk 38 can block the feeding port 11. The bottom of the feeding port 11 and the top of each limiting ring 37 are provided with wedge surfaces that can cooperate with each other. During the rotation process, the rotating disk 38 can make the limiting slide groove 39 coincide with the feeding port 11, and can make the corresponding limiting ring 37 extend into the interior of the feeding port 11.

[0046] refer to Figure 4 and Figure 6 A liquid inlet 27 connected to the driving groove 22 is provided on the outer side of the cryogenic treatment box 1, an annular chamber 28 is provided inside the cryogenic treatment box 1, and a connecting groove 29 connecting the annular chamber 28 and the driving groove 22 is provided inside the cryogenic treatment box 1. The cryogenic medium can enter the annular chamber 28 through the connecting groove 29 after the impeller 23 is rotated through the liquid inlet 27. A plurality of groups of liquid spray ports 210 connected to the annular chamber 28 are evenly provided on the inner side of the cryogenic treatment box 1. The liquid spray ports 210 are used to spray the cryogenic medium on the inner side of the cryogenic treatment box 1, and the opening of each supporting sealing plate 36 is facing the direction of the liquid spray port 210.

[0047] refer to Figure 1 The driving mechanism 2 also includes a liquid nitrogen tank 211, a circulating pump 212 is installed at the bottom of the liquid nitrogen tank 211, the circulating pump 212 is connected to the inside of the liquid nitrogen tank 211, the output end of the circulating pump 212 is connected to the liquid inlet 27 through a pipeline, the inside of the liquid nitrogen tank 211 is connected to a heat exchanger 213, the heat exchanger 213 is connected to the inner side of the cryogenic treatment box 1 through a pipeline, and the cryogenic medium can be liquid nitrogen.

[0048] When in use, the control motor 14 drives the driving disk 21 to rotate, so that the position of the temperature treatment mechanism 3 corresponds to the feeding port 11, and the rotor workpieces to be cryogenically treated are placed in the cryogenic treatment box 1 through the feeding port 11 in sequence, and placed in the temperature treatment mechanism 3. After all are placed, the control motor 14 rotates, and drives the rotating disk 38 to rotate in the third rotating groove 12 through the driving disk 21 and multiple groups of temperature treatment mechanisms 3, so that the rotating disk 38 blocks the feeding port 11 to prevent leakage of cryogenic medium during cryogenic treatment.

[0049] Start the circulation pump 212, and input the cryogenic medium in the liquid nitrogen tank 211 into the driving groove 22 through the pipeline and the liquid inlet 27. The cryogenic medium drives the impeller 23 to rotate through the liquid inlet 27 and can enter the annular chamber 28 through the connecting groove 29, and then spray out toward the rotor workpiece to be cryogenically treated through a plurality of groups of liquid spray ports 210, thereby performing cryogenic treatment, and the cryogenic medium is cooled by the heat exchanger 213 through the pipeline and then returned to the liquid nitrogen tank 211 for circulation.

[0050] It should be noted that when the control motor 14 rotates so that the temperature treatment mechanism 3 corresponds to the position of the material taking port 11, the limiting slide groove 39 will coincide with the position of the material taking port 11. At this time, the corresponding first elastic member 34 is released, and the first elastic member 34 will push the friction disk 31 and the support sealing plate 36, so that the limiting collar 37 extends into the material taking port 11. The friction disk 31 will lose contact with the driven gear 26 under the support of the first elastic member 34. After the friction disk 31 loses contact with the driven gear 26, the force of the driven gear 26 during rotation will act on the rotating sleeve 33, which will not affect the taking and discharging of the rotor workpiece.

[0051] When cryogenic treatment is carried out, the control motor 14 drives the rotating disk 38 to rotate to seal the material feeding port 11. The rotating disk 38 will drive the limiting ring 37 to rotate, so that the wedge surface at the bottom of the material feeding port 11 contacts the wedge surface at the top of the corresponding limiting ring 37, thereby squeezing the limiting ring 37 to move downward in the limiting slide groove 39, and driving the supporting sealing plate 36 and the friction disk 31 to compress the first elastic member 34 to move downward in the first rotating groove 25, so that the bottom of the friction disk 31 is in close contact with the top of the driven gear 26.

[0052] During the cryogenic treatment, the impeller 23 will synchronously drive the driving gear 24 to rotate. During the rotation, the driving gear 24 will drive each driven gear 26 to rotate. During the rotation of the driven gear 26, the friction disk 31 will be driven to rotate through friction force, so that each temperature treatment mechanism 3 can drive the corresponding rotor workpiece to rotate, so that the cryogenic treatment medium can be evenly sprayed on the rotor workpiece to increase the contact area and contact time between the cryogenic medium and the rotor surface, so that the temperature distribution on the rotor surface is uniform, avoiding additional uneven stress distribution on the material due to uneven temperature distribution, and avoiding deformation of the rotor due to rapid temperature changes during the cryogenic treatment, affecting its dimensional accuracy and shape.

[0053] To sum up, through the arrangement of the driving mechanism 2 and the temperature treatment mechanism 3, each driven gear 26 can be driven to rotate by the driving gear 24 during the cryogenic treatment process. During the rotation of the driven gear 26, the friction disk 31 will be driven to rotate through the friction force, so that each temperature treatment mechanism 3 can drive the corresponding rotor workpiece to rotate, so that the cryogenic treatment medium can be evenly sprayed on the rotor workpiece to increase the contact area and contact time between the cryogenic medium and the rotor surface, so that the temperature distribution on the rotor surface is uniform, avoiding additional uneven stress distribution on the material due to uneven temperature distribution, and avoiding deformation of the rotor due to rapid temperature changes during the cryogenic treatment process, affecting its dimensional accuracy and shape.

[0054] Embodiment 2

[0055] In actual use, during the process of taking and discharging materials from the rotor, the cryogenic medium in the cryogenic treatment device will leak, resulting in a decrease in the cryogenic treatment effect, affecting the treatment efficiency, and causing pollution to the surrounding environment and posing a health threat to the operators. Therefore, this embodiment improves the device described in the above embodiment.

[0056] refer to Figure 4 , Fig. 9 and Fig.10, also includes a sealing material taking mechanism 4, which is arranged on the temperature treatment mechanism 3 and is used to seal the temperature treatment mechanism 3 at the feeding port 11 when the rotor takes and discharges materials, including a sealing plate 41, a guide groove 42 is opened at the bottom of the supporting sealing plate 36, the sealing plate 41 is rotatably connected in the guide groove 42, the sealing plate 41 and the supporting sealing plate 36 are arranged in an arc shape, and the sealing plate 41 and the supporting sealing plate 36 can form a cylinder, and the outer peripheral side of the sealing plate 41 is axially fixedly connected with a baffle 43, the baffle 43 is used to limit the sealing plate 41 from completely entering the guide groove 42, and the guide groove 42 is internally sleeved with a second elastic member 44, one end of the second elastic member 44 is fixedly connected to the top of the sealing plate 41, and the other end of the second elastic member 44 is fixedly connected to the top of the guide groove 42, and the sealing plate 41 can slide to the bottom of the supporting sealing plate 36 and fit the bottom of the limiting rotating groove 35.

[0057] During use, when the rotating disk 38 seals the material intake port 11 for cryogenic treatment, the limiting collar 37 moves downward in the limiting slide groove 39 and drives the supporting sealing plate 36 to move downward. In the process, the supporting sealing plate 36 will drive the second elastic member 44 and the sealing plate 41 to move downward synchronously, so that the sealing plate 41 contacts the bottom of the limiting rotating groove 35 under the support of the second elastic member 44. In the process of the driven gear 26 driving the friction disk 31 to rotate, the friction force between the sealing plate 41 and the limiting rotating groove 35 will drive the sealing plate 41 to rotate in the guide groove 42. The sealing plate 41 will twist the second elastic member 44 under the limiting action of the baffle 43 to slide to the inside of the guide groove 42, thereby allowing the sealing plate 41 to release the wrapping of the rotor workpiece to avoid affecting the cryogenic treatment effect.

[0058] When it is necessary to take in and discharge materials, the temperature treatment mechanism 3 will correspond to the position of the material taking port 11, and the position of the limiting slide groove 39 will coincide with the position of the material taking port 11. At this time, the limiting ring 37 can be extended into the material taking port 11, and the elastic force of the first elastic member 34 and the second elastic member 44 is released, and the friction between the sealing plate 41 and the limiting rotating groove 35 becomes smaller. At this time, the sealing plate 41 will extend from the inside of the guide groove 42 back to the initial position under the torsional rebound action of the second elastic member 44, and wrap the rotor workpiece, thereby preventing the cryogenic medium from leaking through the material taking port 11.

[0059] To sum up, through the setting of the sealing material taking mechanism 4, when it is necessary to take and discharge materials, the limiting ring 37 can be extended into the material taking port 11, and the elastic force of the first elastic member 34 and the second elastic member 44 is released, and the friction between the sealing plate 41 and the limiting rotating groove 35 becomes smaller. At this time, the sealing plate 41 will extend from the inside of the guide groove 42 and return to the initial position under the torsional rebound action of the second elastic member 44, and wrap the rotor workpiece, thereby preventing the cryogenic medium from leaking through the material taking port 11, avoiding pollution to the surrounding environment and health threats to operators, and ensuring the continuity and stability of the cryogenic treatment process, thereby improving the cryogenic treatment effect and processing efficiency.

[0060] Embodiment 3

[0061] Application of a motor rotor cryogenic treatment device in rotor cold assembly, reference Fig.10 , including a manipulator 5, a press-fitting device 6, a rotor loading device 7 and a shaft loading device 8. The cryogenic treatment box 1, the press-fitting device 6, the rotor loading device 7 and the shaft loading device 8 are all arranged around the manipulator 5.

[0062] During actual assembly, the manipulator 5 sequentially places the shafts in the shaft loading device 8 into the cryogenic treatment box 1 for cryogenic treatment, and then places the rotor on the rotor loading device 7 onto the assembly tooling of the pressing device 6 by the manipulator 5. After the cryogenic treatment of the shaft is completed, the manipulator 5 takes the shaft out of the cryogenic treatment box 1 and places it above the rotor to be pressed, and then the pressing device 6 presses the shaft and the rotor.

[0063] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor rotor cryogenic treatment device, comprising a cryogenic treatment box, wherein a material taking port is provided at the top of the cryogenic treatment box, wherein: Also includes: A driving mechanism, the driving mechanism is arranged inside the cryogenic treatment box and is used to rotate in conjunction with the cryogenic medium during the cryogenic treatment; A temperature treatment mechanism, which is disposed above the driving mechanism and is used to rotate the rotor during the cryogenic treatment process; A sealing material taking mechanism, which is arranged on the temperature treatment mechanism and is used to seal the temperature treatment mechanism at the material taking port when the rotor takes in and discharges the material; The driving mechanism comprises a driving disk rotatably connected to the bottom of the inner side of the cryogenic treatment box, a driving groove is provided at the bottom of the driving disk, an impeller is rotatably sleeved inside the driving groove on the outer wall of the driving disk, a driving gear is fixedly connected to the top of the impeller, a plurality of first rotating grooves are evenly provided on the top of the driving disk, each of the first rotating grooves is communicated with the driving groove, and a driven gear meshing with the driving gear is rotatably connected in each of the first rotating grooves; The temperature treatment mechanism is a plurality of groups, which are arranged in each of the first rotating grooves, and include a friction disk rotatably connected inside the first rotating groove, a second rotating groove is provided at the bottom of the friction disk, a rotating sleeve is rotatably sleeved inside the second rotating groove on the outer wall of the friction disk, and a first elastic member is connected between the bottom of the rotating sleeve and the driven gear.

2. The electric motor rotor cryogenic treatment device according to claim 1, characterized in that: A limit groove is provided on the top of the friction disc, and a support sealing plate is rotatably connected inside the limit groove. A limit ring is fixedly connected to the top of the support sealing plate. A third groove is provided on the inner top of the cryogenic treatment box, and a rotating disc is rotatably connected inside the third groove. A plurality of limit grooves are evenly provided on the bottom of the rotating disc. The number of the limit grooves is the same as that of the first grooves and their positions correspond. Each support sealing plate is slidably connected in the corresponding limit groove through a corresponding limit ring.

3. The electric motor rotor cryogenic treatment device according to claim 2, characterized in that: The position of the third rotating groove corresponds to the feeding port, the rotating disk can block the feeding port, the bottom of the feeding port and the top of each limiting ring are provided with wedge surfaces that can cooperate with each other, and the rotating disk can make the limiting slide groove coincide with the feeding port during rotation, and can make the corresponding limiting ring extend into the interior of the feeding port.

4. The electric motor rotor cryogenic treatment device according to claim 3, characterized in that: The sealing and material taking mechanism includes a sealing plate, a guide groove is formed at the bottom of the supporting sealing plate, the sealing plate is rotatably connected in the guide groove, the sealing plate and the supporting sealing plate are arranged in an arc shape, and the sealing plate and the supporting sealing plate can form a cylinder, the outer peripheral side of the sealing plate is axially fixedly connected with a baffle, the baffle is used to limit the sealing plate from completely entering the guide groove, the guide groove is internally sleeved with a second elastic member, one end of the second elastic member is fixedly connected to the top of the sealing plate, and the other end of the second elastic member is fixedly connected to the top of the guide groove, and the sealing plate can slide to the bottom of the supporting sealing plate and fit the bottom of the limiting rotation groove.

5. The electric motor rotor cryogenic treatment device according to claim 4, characterized in that: The cryogenic treatment box has a liquid inlet connected to the driving groove on the outside, an annular chamber on the inside, and a connecting groove connecting the annular chamber and the driving groove on the inside. The cryogenic medium can enter the annular chamber through the connecting groove after driving the impeller to rotate through the liquid inlet; A plurality of groups of liquid spray ports connected to the annular chamber are evenly provided on the inner side of the cryogenic treatment box, and the liquid spray ports are used to spray cryogenic medium on the inner side of the cryogenic treatment box, and the opening of each supporting sealing plate faces the direction of the liquid spray ports.

6. The electric motor rotor cryogenic treatment device according to claim 5, characterized in that: The driving mechanism also includes a liquid nitrogen tank, a circulating pump is installed at the bottom of the liquid nitrogen tank, the circulating pump is connected to the interior of the liquid nitrogen tank, the output end of the circulating pump is connected to the liquid inlet through a pipeline, the interior of the liquid nitrogen tank is connected to a heat exchanger through a pipeline, and the heat exchanger is connected to the inner side of the cryogenic treatment box through a pipeline.

7. The electric motor rotor cryogenic treatment device according to claim 6, characterized in that: The bottom of the cryogenic treatment box is fixedly connected with an installation chamber, and a motor for driving the driving disk to rotate is installed inside the installation chamber. The output end of the motor extends to the inside of the cryogenic treatment box and is fixedly connected to the bottom of the driving disk.

8. Use of the electric motor rotor cryogenic treatment device according to any one of claims 1 to 7 in rotor cold assembly.

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