A cold shrinking assembly structure for a new energy motor shaft

Abstract

The present invention relates to the technical field of motor shaft assembly, and proposes a cold shrinkage assembly structure for a new energy motor shaft, including a support base, on which a first support plate, a first support ring and a second support ring are installed. A first hydraulic rod is installed inside the first support plate, and a second support plate is installed on the top of the first support plate. A feed port is provided on the second support plate, and a conveying plate is installed on the second support plate. A first connecting rod is installed on the first support plate, and the first connecting rod is fixedly connected to the first support ring. A second connecting rod is fixedly connected to the second support ring. Through the above technical solution, the problems that the existing cold shrinkage assembly structure cannot push the motor shaft forward while performing circumferential cooling on the motor shaft, and cannot cooperate with the conveying component to continuously install the motor shaft, and cannot adapt to motor shafts of different sizes during the installation of the motor shaft are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor shaft assembly, and specifically, to a cold shrinking assembly structure for a new energy motor shaft. Background Art

[0002] The performance of new energy motors directly affects the efficiency and reliability of the entire vehicle. With the popularization of electric vehicles and wind power generation, the power density, efficiency, and reliability of motors have become key considerations in design. One of the key components of a motor is the motor shaft, which plays a crucial role in transmitting power and bearing loads. When installing a new energy motor shaft, a cold shrinking assembly device is required, but there are still some deficiencies in the existing cold shrinking assembly devices.

[0003] The invention patent with the publication number CN105245065B discloses an assembly device and an assembly method for a rotor. By providing a heat insulation collar to insulate the heated sheath, the maximum heating temperature of the sheath can be maintained, the heat installation time of the sheath can be extended, rapid cold shrinking of the sheath can be avoided, and thus the risk of the magnetic steel being compressed and damaged can be reduced. At the same time, a large axial gap between parts can be avoided, which affects the dynamic balance of the rotor. For the same heat installation time, the initial heating temperature of the sheath can be reduced, ultra-high temperature operation can be avoided, and thus the occurrence of demagnetization of the magnetic steel caused by high temperature can be avoided. The assembly success rate is improved, and the rejection rate is reduced. Although the above device can achieve the function of cold shrinking installation, during use, it cannot push the motor shaft forward while cooling the motor shaft in a circumferential manner, and it cannot cooperate with the conveying component to continuously install the motor shaft. When installing the motor shaft, it cannot be used to adapt to motor shafts of different sizes. Summary of the Invention

[0004] The present invention provides a cold shrinking assembly structure for a new energy motor shaft, which solves the problems that the existing cold shrinking assembly structure cannot push the motor shaft forward while cooling the motor shaft in a circumferential manner, cannot cooperate with the conveying component to continuously install the motor shaft, and cannot be used to adapt to motor shafts of different sizes when installing the motor shaft.

[0005] The technical solution of the present invention is as follows:

[0006] A cold shrinking assembly structure for a new energy motor shaft, comprising a support base, on which a first support plate, a first support ring and a second support ring are installed. A first hydraulic rod is installed inside the first support plate, and a second support plate is installed on the top of the first support plate. A feed port is provided on the second support plate, and a conveying plate is installed on the second support plate. A first connecting rod is installed on the first support plate, and the first connecting rod is fixedly connected to the first support ring. A second connecting rod is fixedly connected to the second support ring, and a connecting frame is installed on the second connecting rod. A baffle is slidably installed inside the connecting frame. A first sliding plate is fixedly connected to the second support ring, and a conveying assembly is arranged below the baffle. An adjusting assembly is installed on the first sliding plate, and a pushing assembly is installed on the first support plate. A rubber guiding plate, a traction assembly and a third electric push rod are installed on the first support ring. An arc-shaped plate is fixedly connected to the top of the third electric push rod. An inner ring is slidably installed inside the second support ring, and a liquid nitrogen tank, a liquid nitrogen pump and a cold shrinking assembly are installed on the inner ring. A side plate is welded to the second support ring, and a second motor is installed on the side plate. A rubber runner is connected to the output shaft of the second motor, and transverse ridges are provided on the outer sides of both the rubber runner and the inner ring. The inner ring and the rubber runner are in mutual contact.

[0007] As a preferred solution of the present invention, both the first support plate and the first support ring are fixedly connected to the support base, the second support ring and the first sliding plate are both slidably connected to the support base, and a second electric push rod is installed between the first support ring and the second support ring.

[0008] As a preferred solution of the present invention, a first motor is installed on the conveying plate, a connecting shaft is connected to the output shaft of the first motor, and fixing plates are fixedly connected around the connecting shaft.

[0009] As a preferred solution of the present invention, the conveying assembly includes a slider slidably installed on the first sliding plate. A bracket is welded to the slider, a roller is rotatably installed on the bracket, a conveyor belt is arranged on the outer side of the roller, and a second spring is installed between the slider and the first sliding plate.

[0010] As a preferred solution of the present invention, the adjusting assembly includes a second hydraulic rod fixedly connected to the first sliding plate. A first connecting plate is fixedly arranged on the second hydraulic rod, a second connecting plate is fixedly installed on the first connecting plate, a rotating shaft is rotatably connected to the second connecting plate, and the top of the rotating shaft is in mutual contact with the bottom of the conveyor belt.

[0011] As a preferred solution of the present invention, the pushing component includes an adapter plate fixedly connected to the first hydraulic rod. A first push rod is fixedly arranged on the adapter plate. A connecting block is slidably mounted on the outer side of the first push rod. A through hole is formed in the connecting block. A first spring is arranged in the through hole. A second push rod is arranged on the front side of the first spring. A third hydraulic rod is installed between the connecting block and the adapter plate.

[0012] As a preferred solution of the present invention, the traction component includes an adapter block fixedly connected to the first support ring. A first electric push rod and a third connecting plate are installed on the adapter block. A guide wheel is rotatably mounted on the third connecting plate. The top of the first support ring is of an open structure. Second sliding plates are slidably mounted on both sides of the opening at the top of the first support ring. The second sliding plates are fixedly connected to the rubber guide plate. A traction steel cable is fixedly connected to the rubber guide plate. The traction steel cable is guided by the guide wheel and connected to the top of the first electric push rod.

[0013] As a preferred solution of the present invention, balls are installed on the arc-shaped plate, and the balls are evenly distributed on the arc-shaped plate.

[0014] As a preferred solution of the present invention, the interior of the inner ring is hollow. Both the inner ring and the second support ring are three-quarter toroidal structures. The cold shrinking component includes a first connecting pipe communicated with the inner ring. A fourth electric push rod is installed on the first connecting pipe. A second connecting pipe is fixedly connected to the fourth electric push rod. A lapping plate is installed on the second connecting pipe. A turntable is rotatably mounted on the lapping plate. A threaded hole is formed in the turntable. A spray head is threadedly installed in the threaded hole.

[0015] As a preferred solution of the present invention, a damping pad is fixedly arranged on the lapping plate, and the periphery of the damping pad is convex.

[0016] The working principle and beneficial effects of the present invention are as follows:

[0017] 1. The device is provided with a pushing component. The multiple second push rods evenly arranged on the pushing component cooperate with the first spring, enabling the device to adaptively adjust the number of acting on the motor shaft according to the size of the motor shaft when pushing the motor shaft, so as to adapt to the use of motor shafts of different sizes.

[0018] 2. Through the second support ring and the inner ring on the device, since the inner ring can rotate within the second support ring, the rubber runner can be driven to rotate by the second motor, thereby driving the inner ring to rotate. When the inner ring rotates, it can perform cold shrinking treatment on the motor shaft through the cold shrinking component, so as to subsequently cooperate with the pushing component to achieve circumferential cold shrinking treatment, and continuously push the motor shaft while cooling circumferentially, enabling the motor shaft to be cooled evenly. This device can push the motor shaft forward while performing circumferential cooling on the motor shaft, thereby improving the cold shrinking installation effect of the device.

[0019] 3. Through the provided cold shrinking component, by rotating the turntable on the cold shrinking component to switch the nozzles in different screw holes, the device can be used with different nozzles as needed, so as to ensure a suitable coverage area when cold shrinking and installing motor shafts of different sizes, and ensure that the motor shaft is cooled evenly.

[0020] 4. Through the provided feed inlet, conveying plate, conveying component and adjusting component, the motor to be installed is placed on the surface of the conveyor belt and conveyed to the position of the baffle by the conveyor belt, and then cold shrinking installation is performed on the motor shaft. During installation, the elongation of the second electric push rod can be adjusted according to the length of the motor shaft, and the height of the second hydraulic rod can be adjusted according to the height of the motor, so that the motor and the motor shaft to be installed can be aligned, enhancing the applicable range of the device. This device can intermittently drop the motor shaft, and cooperate with the conveyor belt to enable the device to continuously install the motor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0022] Figure 1 is the overall structural schematic diagram of a cold shrinking assembly structure for a new energy motor shaft of the present invention;

[0023] Figure 2 is Figure 1 the enlarged schematic diagram of the structure at A in

[0024] Figure 3 is Figure 1 the enlarged schematic diagram of the structure at B in

[0025] Figure 4 is the schematic diagram of the connection structure between the first support plate and the first hydraulic rod of the present invention;

[0026] Figure 5 is the disassembled structure schematic diagram of the connection plate and the third hydraulic rod of the present invention;

[0027] Figure 6 is Figure 5 the enlarged schematic diagram of the structure at C in

[0028] Figure 7It is a schematic diagram of the connection structure between the rubber guide plate and the side plate of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection structure between the liquid nitrogen pump and the inner ring of the present invention;

[0030] Figure 9 It is a schematic diagram of the connection structure between the second support ring and the inner ring of the present invention;

[0031] Figure 10 It is a schematic diagram of the split structure of the cold shrinkage assembly of the present invention.

[0032] Reference numerals: 1, support base; 2, first support plate; 3, first hydraulic rod; 4, second support plate; 5, feed inlet; 6, conveying plate; 7, first motor; 8, connecting shaft; 9, fixing plate; 10, first connecting rod; 11, first support ring; 12, second support ring; 13, second connecting rod; 14, connecting frame; 15, first sliding plate; 16, conveying assembly; 1601, slider; 1602, bracket; 1603, roller; 1604, conveyor belt; 1605, second spring; 17, baffle; 18, adjusting assembly; 1801, second hydraulic rod; 1802, first connecting plate; 1803, second connecting plate; 1804, rotating shaft; 19, pushing assembly; 1901, connecting plate; 1902, third hydraulic rod; 1903, connecting block; 1904, first push rod; 1905, first spring; 1906, second push rod; 1907, through hole; 20, rubber guide plate; 21, traction assembly; 2101, connecting block; 2102, first electric push rod; 2103, traction steel cable; 2104, guide wheel; 2105, third connecting plate; 2106, second sliding plate; 22, second electric push rod; 23, third electric push rod; 24, arc plate; 25, ball; 26, liquid nitrogen tank; 27, liquid nitrogen pump; 28, inner ring; 29, side plate; 30, second motor; 31, rubber runner; 32, cold shrinkage assembly; 3201, first connecting pipe; 3202, fourth electric push rod; 3203, second connecting pipe; 3204, overlapping plate; 3205, damping pad; 3206, turntable; 3207, screw hole; 3208, nozzle. Detailed implementation manners

[0033] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention. Embodiment 1

[0034] As Figures 1 - 10As shown in the figure, this embodiment proposes a cold shrinking assembly structure for a new energy motor shaft, including a support base 1. A first support plate 2, a first support ring 11, and a second support ring 12 are installed on the support base 1. The support base 1 is used to support the first support plate 2, the first support ring 11, and the second support ring 12. A first hydraulic rod 3 is installed inside the first support plate 2. A second support plate 4 is installed on the top of the first support plate 2. The second support plate 4 is not connected to the second support ring 12. A feeding port 5 is opened on the second support plate 4. A conveying plate 6 is installed on the second support plate 4. A first connecting rod 10 is installed on the first support plate 2. The first connecting rod 10 and the first support ring 11 are fixedly connected. A second connecting rod 13 is fixedly connected to the second support ring 12. A connecting frame 14 is installed on the second connecting rod 13. A baffle 17 is slidably installed inside the connecting frame 14. A first sliding plate 15 is fixedly connected to the second support ring 12. A conveying component 16 is arranged below the baffle 17. The conveying component 16 is used to convey the motor housing of the motor shaft to be installed. An adjusting component 18 is installed on the first sliding plate 15. The adjusting component 18 is used to change the conveying height of the conveying component 16, so as to align the motor shaft and the motor to be installed. A pushing component 19 is installed on the first support plate 2. The pushing component 19 is used to push the motor shaft into the interior of the motor housing and can be used to adapt to motor shafts of different sizes. A rubber guiding plate 20, a traction component 21, and a third electric push rod 23 are installed on the first support ring 11. The rubber guiding plate 20 is used to guide the falling motor shaft, so that the motor shaft can be stably conveyed to the installation area and cooperate with the pushing component 19 for installation. The top of the third electric push rod 23 is fixedly connected with an arc-shaped plate 24. The arc-shaped plate 24 is used to support the falling motor shaft. An inner ring 28 is slidably installed inside the second support ring 12. A liquid nitrogen tank 26, a liquid nitrogen pump 27, and a cold shrinking component 32 are installed on the inner ring 28. A side plate 29 is welded on the second support ring 12. A second motor 30 is installed on the side plate 29. A rubber runner 31 is connected to the output shaft of the second motor 30. Horizontal convex stripes are arranged on the outer sides of both the rubber runner 31 and the inner ring 28. The inner ring 28 and the rubber runner 31 are in mutual contact. By driving the rubber runner 31 to rotate through the second motor 30, the inner ring 28 is driven to rotate. The inner ring 28 can rotate stably inside the second support ring 12. The liquid nitrogen in the liquid nitrogen tank 26 is sent into the inner ring 28 by the liquid nitrogen pump 27, and then the cold shrinking component 32 cools the continuously advancing motor shaft in a circumferential manner. Embodiment 2

[0035] As Figures 1 - 10 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes a cold shrinking assembly structure for a new energy motor shaft.

[0036] In this embodiment, the first support plate 2 and the first support ring 11 are both fixedly connected to the support base 1, the second support ring 12 and the first sliding plate 15 are both slidably connected to the support base 1, and a second electric push rod 22 is installed between the first support ring 11 and the second support ring 12. The second electric push rod 22 can adjust the distance between the first support ring 11 and the second support ring 12, so as to adapt to motor shafts of different lengths for use, enhancing the application range of the device.

[0037] In this embodiment, a first motor 7 is installed on the conveying plate 6. A connecting shaft 8 is connected to the output shaft of the first motor 7. Fixing plates 9 are fixedly connected around the connecting shaft 8. By driving the connecting shaft 8 to rotate through the first motor 7 on the device, and the connecting shaft 8 rotates a quarter of a circle each time, the equally angularly distributed fixing plates 9 can make the motor shafts fall one by one, so as to facilitate the subsequent installation of the motor shafts one by one.

[0038] In this embodiment, the conveying assembly 16 includes a slider 1601 slidably installed on the first sliding plate 15. A bracket 1602 is welded on the slider 1601. A roller 1603 is rotatably installed on the bracket 1602. A conveyor belt 1604 is arranged outside the roller 1603. A second spring 1605 is installed between the slider 1601 and the first sliding plate 15. The conveyor belt 1604 can convey the motor housing of the motor shaft to be installed to a suitable position for subsequent continuous installation, and the second spring 1605 facilitates the subsequent automatic reset after lifting the height of the conveyor belt 1604.

[0039] In this embodiment, the adjusting assembly 18 includes a second hydraulic rod 1801 fixedly connected to the first sliding plate 15. A first connecting plate 1802 is fixedly arranged on the second hydraulic rod 1801. A second connecting plate 1803 is fixedly installed on the first connecting plate 1802. A rotating shaft 1804 is rotatably connected to the second connecting plate 1803. The top of the rotating shaft 1804 abuts against the bottom of the conveyor belt 1604. By adjusting the height of the first connecting plate 1802 and the second connecting plate 1803 through the second hydraulic rod 1801, the height of the conveyor belt 1604 is changed, so as to facilitate the subsequent alignment and installation of the motor shaft and the motor. The rotating shaft 1804 can reduce the moving resistance of the conveyor belt 1604 when the conveyor belt 1604 is running continuously.

[0040] In this embodiment, the pushing component 19 includes an adapter plate 1901 fixedly connected to the first hydraulic rod 3. A first push rod 1904 is fixedly arranged on the adapter plate 1901. A connecting block 1903 is slidably installed on the outer side of the first push rod 1904. A through hole 1907 is formed in the connecting block 1903. A first spring 1905 is arranged in the through hole 1907. A second push rod 1906 is arranged on the front side of the first spring 1905. A third hydraulic rod 1902 is installed between the connecting block 1903 and the adapter plate 1901. By extending or shortening the third hydraulic rod 1902, the distance between the adapter plate 1901 and the connecting block 1903 is changed, so as to change the initial position of the second push rod 1906 at the front end of the first spring 1905. When the motor shaft is pushed, different numbers of second push rods 1906 can act on the motor shaft to push the motor shaft forward, so as to adapt to the installation of motor shafts with different diameters.

[0041] In this embodiment, the traction component 21 includes an adapter block 2101 fixedly connected to the first support ring 11. A first electric push rod 2102 and a third connecting plate 2105 are installed on the adapter block 2101. A guide wheel 2104 is rotatably installed on the third connecting plate 2105. The top of the first support ring 11 is an open structure. Second sliding plates 2106 are slidably installed on both sides of the opening at the top of the first support ring 11. The second sliding plates 2106 and the rubber guide plate 20 are fixedly connected. A traction steel cable 2103 is fixedly connected to the rubber guide plate 20. The traction steel cable 2103 is guided by the guide wheel 2104 and connected to the top of the first electric push rod 2102. By extending or shortening the first electric push rod 2102, the initial position of the rubber guide plate 20 can be changed through the traction steel cable 2103 on the guide wheel 2104, so as to adapt to the individual blanking of motor shafts with different diameters. The second sliding plates 2106 ensure that the rubber guide plate 20 can move smoothly.

[0042] In this embodiment, balls 25 are installed on the arc plate 24. The balls 25 are evenly distributed on the arc plate 24. The arc plate 24 is used to support the motor shaft. And when the motor shaft is pushed subsequently, the resistance of the motor shaft moving can be reduced through the balls 25, so as to ensure the installation quality of the device.

[0043] In this embodiment, the interior of the inner ring 28 is hollow. Both the inner ring 28 and the second support ring 12 are three-quarter toroidal structures. The cold shrinkage assembly 32 includes a first connecting pipe 3201 communicatively provided on the inner ring 28. A fourth electric push rod 3202 is installed on the first connecting pipe 3201. A second connecting pipe 3203 is fixedly connected to the fourth electric push rod 3202. A lapping plate 3204 is installed on the second connecting pipe 3203. A turntable 3206 is rotatably installed on the lapping plate 3204. A threaded hole 3207 is formed in the turntable 3206. A spray head 3208 is installed with internal threads in the threaded hole 3207. When the air pressure inside the inner ring 28 increases, the liquid nitrogen entering the inner ring 28 can enter the second connecting pipe 3203 from the first connecting pipe 3201 and finally spray out from the spray head 3208. With the rotation of the inner ring 28 and the continuous forward movement of the motor shaft, circumferential cooling of the motor shaft can be achieved, ensuring the uniformity of the cold shrinkage of the device. Different types of spray heads 3208 can be installed in different threaded holes 3207 to ensure the coverage of the cooling area.

[0044] In this embodiment, a damping pad 3205 is fixedly provided on the lapping plate 3204. The four sides of the damping pad 3205 are all convex. The convex structure of the damping pad 3205 enables the device to remain fixed after switching the coverage of the cooling area, ensuring the stability of the device during operation.

[0045] Specifically, the present invention is a cold shrinkage assembly structure for a new energy motor shaft. First, as Figures 1 - 6 shown, the support base 1, the first support plate 2, and the first support ring 11 are used to support the whole device. The motor shaft to be installed is conveyed through the conveying plate 6 on the second support plate 4. When conveying the motor shaft, the connecting shaft 8 is intermittently rotated by the first motor 7. The connecting shaft 8 rotates one-quarter of a circle each time. The equally angularly distributed fixing plates 9 can make the motor shafts drop one by one. The motor shaft may fall through the rubber guide plate 20 and be supported by the arc plate 24 to facilitate subsequent individual installation of the motor shafts. As Figure 4 and Figure 5 shown, by extending or shortening the third hydraulic rod 1902, the distance between the connecting plate 1901 and the connecting block 1903 is changed, thereby changing the initial position of the second push rod 1906 at the front end of the first spring 1905. When the first hydraulic rod 3 extends and pushes the motor shaft, different numbers of second push rods 1906 act on the motor shaft to push the motor shaft forward. The first springs 1905 behind some of the blocked second push rods 1906 will be compressed to adapt to the installation of motor shafts with different diameters.

[0046] As Figures 1 - 4 and Figures 7 - 10As shown, when the motor shaft is pushed forward, the ball 25 rotates to reduce the moving resistance of the motor shaft. According to the length of the motor shaft, the second electric push rod 22 between the first support ring 11 and the second support ring 12 is extended or shortened, so as to adjust the initial positions of the second support ring 12 and the first sliding plate 15, so as to adapt to the installation of motor shafts of different lengths. Liquid nitrogen in the liquid nitrogen tank 26 is sent into the internal cavity of the inner ring 28 through the liquid nitrogen pump 27. As the air pressure in the inner ring 28 increases, the liquid nitrogen entering the inner ring 28 can enter the second connecting pipe 3203 from the first connecting pipe 3201, and finally be ejected from the nozzle 3208. The rubber runner 31 is driven to rotate by the second motor 30 on the side plate 29, and the rubber runner 31 abuts against the inner ring 28 to drive the inner ring 28 to rotate. Since two sets of the side plate 29, the second motor 30 and the rubber runner 31 are arranged on the left and right sides of the device, when the opening of the inner ring 28 rotates to one of the rubber runners 31, the rubber runner 31 on the other side can drive the inner ring 28 to continue rotating. With the continuous rotation of the inner ring 28 and the continuous forward movement of the motor shaft, the circumferential cooling of the motor shaft can be realized, ensuring the uniformity of the cold shrinkage of the device. Different types of nozzles 3208 can be installed in different screw holes 3207 to ensure the coverage of the cooling area. After replacing the nozzles 3208 in different screw holes 3207, the damping pad 3205 on the overlapping plate 3204 can adjust and fix the angle of the turntable 3206, so as to select different nozzles 3208 for cooling according to the size of the motor shaft. During installation, the motor housing to be installed is placed on the conveyor belt 1604 of the conveying assembly 16. According to the installation position of the motor housing to be installed, the local height of the conveyor belt 1604 is changed, and the heights of the first connecting plate 1802 and the second connecting plate 1803 are adjusted by the second hydraulic rod 1801, so as to change the local height of the conveyor belt 1604, so as to align and install the motor shaft and the motor subsequently. The rotating shaft 1804 can reduce the moving resistance of the conveyor belt 1604 when the conveyor belt 1604 is running continuously. When the local part of the conveyor belt 1604 is lifted, the slider 1601 on the bracket 1602 will be pulled, so that the second spring 1605 is stretched, so that the device can adapt to conveyor belts 1604 of different heights and motor housings to be installed for use. This device can adapt to motor shafts of different sizes for individual blanking. By extending or shortening the first electric push rod 2102, the initial position of the rubber guide plate 20 is changed by the traction steel rope 2103 on the guide wheel 2104, so as to adapt to motor shafts of different diameters for individual blanking, and the second sliding plate 2106 ensures the stable movement of the rubber guide plate 20.

[0047] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cold shrinking assembly structure for a new energy motor shaft, including a support base, characterized in that: A first support plate, a first support ring and a second support ring are installed on the support base. A first hydraulic rod is installed inside the first support plate. A second support plate is installed on the top of the first support plate. A feed inlet is formed on the second support plate. A conveying plate is installed on the second support plate. A first connecting rod is installed on the first support plate. The first connecting rod and the first support ring are fixedly connected. A second connecting rod is fixedly connected to the second support ring. A connecting frame is installed on the second connecting rod. A baffle is slidably installed inside the connecting frame. A first sliding plate is fixedly connected to the second support ring. A conveying assembly is arranged below the baffle. An adjusting assembly is installed on the first sliding plate. A pushing assembly is installed on the first support plate. A rubber guiding plate, a traction assembly and a third electric push rod are installed on the first support ring. An arc-shaped plate is fixedly connected to the top of the third electric push rod. An inner ring is slidably installed inside the second support ring. A liquid nitrogen tank, a liquid nitrogen pump and a cold shrinking assembly are installed on the inner ring. A side plate is welded to the second support ring. A second motor is installed on the side plate. A rubber runner is connected to the output shaft of the second motor. Transverse ridges are arranged on the outer sides of the rubber runner and the inner ring. The inner ring and the rubber runner are in mutual contact; The pushing assembly includes an adapter plate fixedly connected to the first hydraulic rod. A first push rod is fixedly arranged on the adapter plate. A connecting block is slidably installed on the outer side of the first push rod. A through hole is formed in the connecting block. A first spring is arranged inside the through hole. A second push rod is arranged on the front side of the first spring. A third hydraulic rod is installed between the connecting block and the adapter plate.

2. The cold shrinking assembly structure of a new energy motor shaft according to claim 1, wherein Both the first support plate and the first support ring are fixedly connected to the support base. Both the second support ring and the first sliding plate are slidably connected to the support base. A second electric push rod is installed between the first support ring and the second support ring.

3. A cold shrinkage assembly structure for a new energy motor shaft according to claim 1, characterized in that, A first motor is installed on the conveying plate. A connecting shaft is connected to the output shaft of the first motor. Fixing plates are fixedly connected around the connecting shaft.

4. A cold shrinkage assembly structure for a new energy motor shaft according to claim 1, characterized in that, The conveying assembly includes a slider slidably installed on the first sliding plate. A bracket is welded to the slider. A roller is rotatably installed on the bracket. A conveyor belt is arranged on the outer side of the roller. A second spring is installed between the slider and the first sliding plate.

5. The cold shrinkage assembly structure of a new energy motor shaft according to claim 4, characterized in that, The adjusting assembly includes a second hydraulic rod fixedly connected to the first sliding plate. A first connecting plate is fixedly arranged on the second hydraulic rod. A second connecting plate is fixedly installed on the first connecting plate. A rotating shaft is rotatably connected to the second connecting plate. The top of the rotating shaft is in mutual contact with the bottom of the conveyor belt.

6. The cold shrinkage assembly structure of a new energy motor shaft according to claim 1, characterized in that, The traction assembly includes an adapter block fixedly connected to the first support ring. A first electric push rod and a third connecting plate are installed on the adapter block. A guide wheel is rotatably installed on the third connecting plate. The top of the first support ring is an open structure. Second sliding plates are slidably installed on both sides of the open top of the first support ring. The second sliding plates are fixedly connected to the rubber guide plate. A traction steel cable is fixedly connected to the rubber guide plate. The traction steel cable is guided by the guide wheel and connected to the top of the first electric push rod.

7. A cold shrinkage assembly structure for a new energy motor shaft according to claim 1, characterized in that, Ball bearings are installed on the arc-shaped plate, and the ball bearings are evenly distributed on the arc-shaped plate.

8. The cold shrinkage assembly structure of a new energy motor shaft according to claim 1, characterized in that, The interior of the inner ring is hollow. Both the inner ring and the second support ring are three-quarter ring body structures. The cold shrinkage assembly includes a first connecting pipe communicated with the inner ring. A fourth electric push rod is installed on the first connecting pipe. A second connecting pipe is fixedly connected to the fourth electric push rod. A lapping plate is installed on the second connecting pipe. A turntable is rotatably installed on the lapping plate. A threaded hole is formed in the turntable, and a spray head is threadedly installed in the threaded hole.

9. The cold shrinking assembly structure of a new energy motor shaft according to claim 8, wherein, A damping pad is fixedly arranged on the lapping plate, and the periphery of the damping pad is convex.

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