Direct connection slip shaft transmission mechanism and winding device

Abstract

The utility model discloses a direct connection type slip shaft transmission mechanism and winding device, including slip shaft, drive arrangement and transmission mechanism. The end of slip shaft is through transmission mechanism and drive arrangement transmission connection, wherein the output of transmission mechanism, namely reduction gear wheel, is directly connected with slip shaft through a hollow assembly shaft sleeve, and the traditional sprocket chain drive is discarded. Transmission mechanism adopts two -stage reduction, including planetary reduction mechanism and the gear pair that is composed of reduction pinion and reduction gear wheel, has high rigidity, zero back gap's characteristics. The present application greatly shortens the transmission path through direct connection mode, and transmission efficiency is high, and energy -conserving is remarkable, and can realize millisecond level response and accurate repeat positioning, and thoroughly eliminates start -stop impact. Meanwhile, the structure runs stably, and there is no vibration noise, guarantees the constant tension of the coiled material and avoids the winding quality defect effectively, and does not need lubrication, satisfies the clean requirement of lithium battery production.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery electrode production, and in particular to a direct-drive differential shaft transmission mechanism and a winding device. Background Technology

[0002] In the field of lithium battery manufacturing, a slip shaft is typically used to wind or unwind electrode materials. Since the surface of the slip shaft is divided into multiple independent slip rings or slip segments, the slippage effect of the winding and unwinding can be independently and effectively controlled under the action of driving torque, thereby providing the winding material with a constant tension that can be precisely controlled.

[0003] In related technologies, traditional differential shafts typically use the following methods when connected to a drive motor: Figure 1 The proposed solution assembles a drive sprocket 21 and a transmission sprocket 11 at the ends of the drive motor 2 and the differential shaft 1, respectively, and then achieves chain transmission between them via a chain. This solution has several problems: First, chain transmission itself suffers from multi-stage frictional losses. There is meshing friction at the mating parts of the sprocket and the chain, and joint friction between chain links. Furthermore, the long transmission chain exhibits elastic deformation and hysteresis during power transmission, affecting the system's response speed and control accuracy. Second, the chain and sprocket transmission method requires regular lubrication and maintenance. The chain needs frequent grease application to prevent wear and corrosion. Under the cleanliness requirements of lithium battery production, grease can easily contaminate the electrode materials and increase maintenance costs and manual labor. In addition, the chain suffers from wear and elongation. After long-term use, the chain will inevitably wear and elongate, leading to unstable transmission, vibration, and noise. In severe cases, it may require shutdown. First, replacing the entire chain and sprocket set is crucial. Failure to do so in a timely manner can lead to chain skipping or derailment under high-speed or vibrating conditions, causing production interruptions. Second, the inherent gap between the chain and sprocket meshing causes impact and lag during startup and reversal, preventing instantaneous and precise synchronization. Furthermore, the polygonal effect of the chain and meshing impact generate significant vibration and noise, affecting the overall stability of the equipment and the working environment. Third, the smoothness of the transmission directly affects the stability of the winding tension. Minor vibrations and jumps in the chain drive can translate into "snake-like" or "stripe" defects in the rolled material, affecting the quality of the finished product. Fourth, chain drives result in a lengthy structure, requiring additional space for motor mounts, large and small sprockets, tensioning mechanisms, etc., making the equipment less compact. Finally, complex installation and debugging are also present, requiring precise control of the coplanarity and alignment accuracy of the drive sprocket and transmission sprocket; otherwise, wear and vibration will be exacerbated.

[0004] There is still a lack of better technical solutions to the problem of poor stability of the differential shaft caused by the use of chain drive in related technologies. Utility Model Content

[0005] In view of this, it is necessary to provide a direct-drive differential shaft transmission mechanism and a winding device to at least solve the problem of poor stability of the differential shaft caused by the use of chain drive in the related technology.

[0006] In a first aspect, this application provides a technical solution as follows: a direct-drive differential shaft transmission mechanism, including a differential shaft, a drive device, and a transmission mechanism. A roll of material for unloading or winding is mounted on the differential shaft. The end of the differential shaft is connected to the drive device via the transmission mechanism. The transmission mechanism includes a housing and a large reduction gear, a small reduction gear, a connecting bushing, and a planetary reduction mechanism mounted in the housing. The large reduction gear and the small reduction gear are meshed together. The connecting bushing and the small reduction gear are respectively connected to the power input end and power output end of the planetary reduction mechanism. The drive device is fixedly mounted on the housing, and the output shaft of the drive device is matched with the connecting bushing. The large reduction gear is coaxially fixed with a hollow mounting bushing, which is matched with the differential shaft.

[0007] In some embodiments, the end of the slip shaft is fitted with a spacer, and a rotary joint is rotatably connected at the center of the spacer shaft. The rotary joint is connected to an air supply passage provided inside the slip shaft.

[0008] In some embodiments, the end of the slip shaft is mounted to the adjusting plate in a relatively rotatable manner, and a top block and an anti-rotation plate are respectively mounted on both sides of the adjusting plate, and the housing of the transmission mechanism is nested and positioned with the anti-rotation plate.

[0009] In some embodiments, the planetary reduction mechanism includes an internal gear ring, planetary gears, a sun gear, and a planet carrier. The outer wall of the internal gear ring has an outer slot, which is nested into the housing. The planet carrier is rotatably mounted in the housing and arranged inside the internal gear ring. The planetary gears are rotatably mounted on the planet carrier and include multiple sets arranged in a circular array. Each set of planetary gears meshes with the internal gear ring. The sun gear is rotatably mounted at the axis of the planet carrier and meshes with each set of planetary gears. The connecting bushing is coaxially fixed to the sun gear, and the reduction pinion is coaxially connected to the planet carrier.

[0010] In some embodiments, a spline shaft is fixedly connected to the axis of the planetary carrier, and a spline sleeve that is nested and inserted into the axis of the reduction pinion is fixedly connected to the axis of the planetary carrier; the inner walls of the connecting sleeve and the mounting sleeve are respectively provided with a first inner slot and a second inner slot, the output shaft of the drive device is nested and inserted into the first inner slot, and the slip shaft is nested and inserted into the second inner slot.

[0011] In some embodiments, the drive device includes a servo motor.

[0012] Secondly, this application also provides a technical solution as follows: the slip shaft is driven to rotate by the direct-drive slip shaft transmission mechanism described in the first aspect.

[0013] Compared with related technologies, the beneficial effects of the embodiments of this application are as follows: The direct-drive differential shaft transmission mechanism and winding device employ a differential shaft, a drive device, and a transmission mechanism. A roll of material for unloading or winding is mounted on the differential shaft. The end of the differential shaft is connected to the drive device via the transmission mechanism. The transmission mechanism includes a housing and a large reduction gear, a small reduction gear, a connecting bushing, and a planetary reduction mechanism assembled within the housing. The large reduction gear and the small reduction gear are meshed together. The connecting bushing and the small reduction gear are respectively connected to the power input end and power output end of the planetary reduction mechanism. The drive device is fixedly installed on the housing, and the output shaft of the drive device is matched with the connecting bushing. The large reduction gear is coaxially fixed with a hollow assembly bushing, which is matched with the differential shaft. This solves the problem of poor stability of the differential shaft caused by chain drive in related technologies. By using a hollow rotary platform reduction mechanism as a bridge, the drive device and the differential shaft are directly connected with "zero transmission", which shortens the transmission path, improves the response speed and improves the repeatability and positioning accuracy, avoids the impact and lag caused during start-up, stop and reversal, and ensures the quality of the wound product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the slip shaft transmission mechanism in the traditional scheme; Figure 2 This is a schematic diagram of the structure of the slip shaft transmission mechanism provided by this utility model; Figure 3 This is a schematic diagram of the transmission mechanism; Figure 4 A schematic diagram of the transmission mechanism after removing the housing; Figure 5 for Figure 4 A structural diagram showing the disassembled state of each component.

[0015] Figure label: 1. Slip shaft; 11. Drive sprocket; 12. Spacer; 13. Rotary joint; 2. Drive unit; 21. Drive sprocket; 3. Transmission mechanism; 31. Housing; 311. Fixing pin; 32. Reduction gear; 321. Assembly bushing; 322. Second inner slot; 33. Reduction pinion; 331. Spline sleeve; 34. Connecting bushing; 341. First inner slot; 35. Planetary reduction mechanism; 351. Internal gear ring; 352. Planet gears; 353. Sun gear; 354. Planet carrier; 355. Outer slot; 356. Spline shaft; 4. Roll materials; 51. Adjusting plate; 52. Top block; 53. Anti-rotation plate; 531. Positioning hole; 532. Pad block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] Please see Figures 1 to 5 The direct-drive differential shaft transmission mechanism includes a differential shaft 1, a drive unit 2, and a transmission mechanism 3. A roll material 4 for feeding or winding is mounted on the differential shaft 1, and the end of the differential shaft 1 is connected to the drive unit 2 through the transmission mechanism 3.

[0020] The transmission mechanism 3 includes a housing 31 and a large reduction gear 32, a small reduction gear 33, a connecting bushing 34, and a planetary reduction mechanism 35 assembled in the housing 31. The large reduction gear 32 and the small reduction gear 33 are meshed together. The connecting bushing 34 and the small reduction gear 33 are respectively connected to the power input end and the power output end of the planetary reduction mechanism 35. The drive device 2 is fixedly installed on the housing 31, and the output shaft of the drive device 2 is matched with the connecting bushing 34. The large reduction gear 32 is coaxially fixed with a hollow mounting bushing 321, and the mounting bushing 321 is matched with the slip shaft 1.

[0021] In this embodiment, the driving device 2 includes, but is not limited to, a drive motor.

[0022] In the aforementioned direct-drive differential shaft transmission mechanism, a hollow rotary platform reduction mechanism is used as a bridge to achieve a "zero-transmission" direct connection between the drive device and the differential shaft. This shortens the transmission path, improves the response speed and repeatability, avoids the impact and lag during start-up, shutdown and reversal, and ensures the quality of the wound product.

[0023] It should be noted that the direct-drive differential shaft transmission mechanism of this application has brought significant benefits in terms of transmission efficiency, control accuracy, running stability, environmental adaptability, space utilization and installation and maintenance. It is especially suitable for winding and unwinding applications in lithium battery production lines with extremely high requirements for tension control, clean environment and product quality.

[0024] In this embodiment, the slip shaft 1 is mounted on the wall panel or frame in the lithium battery production line. The drive device 2 adopts a servo motor, which can precisely control the speed and angle. The power output by the drive device 2 is reduced and increased in torque after passing through the transmission mechanism 3. The output end of the transmission mechanism 3 is a large reduction gear 32, which drives the slip shaft 1, which is rigidly connected to it, to rotate. The slip shaft 1 is driven to run stably with a set reduction ratio, so as to effectively unwind and rewind the roll material 4 with constant tension.

[0025] In this embodiment, the differential shaft 1 is provided with multiple air-expanding differential sleeves. Each air-expanding differential sleeve drives the roll 4 to be wound up under the action of friction. When the diameter of the roll 4 increases and the tension changes, the differential sleeve and the roll 4 slip (slippage) occurs, so that the roll 4 is wound up with constant tension.

[0026] In this embodiment, the housing 31 of the transmission mechanism 3 ensures that the entire assembly is stably installed at a specific position on the production line, thereby ensuring that each gear operates stably within it to achieve power transmission with reduced speed and increased torque. The transmission mechanism 3 is a two-stage reduction mechanism, which can effectively amplify the torque of the drive device 2. When the drive device 2 drives the connecting bushing 34 to operate, the planetary reduction mechanism 35, as the primary reduction component, drives the reduction pinion 33 to operate after amplifying the torque. The reduction pinion 33 cooperates with the reduction gear 32 as a secondary reduction component to further amplify the torque.

[0027] It should be noted that the direct-drive differential shaft transmission mechanism provided in this application embodiment abandons the traditional sprocket and chain transmission pair, and adopts a hollow assembly bushing 321 directly connected to the differential shaft 1 to realize the direct connection between the drive device 2 and the differential shaft 1. The transmission path is extremely short, with almost no intermediate friction loss, and the transmission efficiency can reach more than 99%, resulting in significant energy saving. At the same time, the gear-matched reduction transmission mechanism 3 in this application embodiment has the characteristics of high rigidity, high torque, and zero backlash, which transmits the control commands of the motor to the differential shaft 1 without loss, achieving millisecond-level response speed and extremely high repeatability positioning accuracy, and completely eliminating the impact and lag during start-up, stopping, and reversing.

[0028] To ensure that the slip shaft 1 applies a constant tension to the roll 4, a pneumatic method is needed to control the slippage effect between the slip shaft 1 and the roll 4. In order to ensure a stable air supply to the operating slip shaft 1, in some embodiments, a spacer 12 is fitted at the end of the slip shaft 1, and a rotary joint 13 is rotatably connected at the center of the spacer 12. The rotary joint 13 is connected to the air supply passage provided inside the slip shaft 1.

[0029] It is understandable that with this configuration, the spacer 12 can ensure that the rotary joint 13 is stably mounted on it. The spacer 12 can rotate synchronously with the differential shaft 1, while the rotary joint 13 remains stationary and achieves the effect of connecting the air supply equipment with the air supply passage in the differential shaft 1. When the differential shaft 1 drives the roll 4 on it to rotate, the gas used to control the slipping posture of the differential shaft 1 is always stably supplied to the air supply passage in the differential shaft 1 through the rotary joint 13.

[0030] To ensure that components such as the slip shaft 1, drive device 2, and transmission mechanism 3 can be stably assembled on the lithium battery production line and to achieve coordinated operation of the three, in some embodiments, the end of the slip shaft 1 is assembled to the adjustment plate 51 in a relatively rotating manner. The two sides of the adjustment plate 51 are respectively equipped with a top block 52 and an anti-rotation plate 53, and the housing 31 of the transmission mechanism 3 and the anti-rotation plate 53 are nested and positioned.

[0031] Understandably, with this configuration, the slip shaft 1 can be mounted to the adjusting plate 51 via bearings to achieve stable rotation of the slip shaft 1. The adjusting plate 51 is bolted to the wall panel or frame and its position can be finely adjusted. The top block 52 is also bolted to the wall panel or frame, and by tightening the adjusting bolts on it, a force is applied to the adjusting plate 51, thereby finely adjusting the adjusting plate 51 and the slip shaft 1 mounted on it. The anti-rotation plate 53 is bolted to the wall panel or frame and has a positioning hole 531 on it. A pad 532 is inserted, and a fixing pin 311 is fixed on the housing 31 to maintain the insertion of the pad 532. After the housing 31 is bolted to the wall panel or frame, the fixing pin 311 and the pad 532 cooperate and are assembled into the positioning hole 531, which can further limit the housing 31 from rotating ineffectively. The rotary joint 13 can also be limited from rotating ineffectively by the support fixed to the wall panel or frame, thereby ensuring that the rotary joint 13 always remains stationary and is in a relative rotating position with the differential shaft 1, so as to achieve stable air supply to the differential shaft 1.

[0032] To ensure that the planetary reduction mechanism 35 can be stably assembled in the housing 31 and to adjust the output power of the drive device 2 by reducing speed and increasing torque, in some embodiments, the planetary reduction mechanism 35 includes an internal gear ring 351, planetary gears 352, a sun gear 353, and a planet carrier 354. The outer wall of the internal gear ring 351 has an outer slot 355, which is nested into the housing 31. The planet carrier 354 is rotatably mounted in the housing 31 and arranged inside the internal gear ring 351. The planetary gears 352 are rotatably mounted on the planet carrier 354 and include multiple sets arranged in a ring array. Each set of planetary gears 352 is meshed with the internal gear ring 351. The sun gear 353 is rotatably mounted at the axis of the planet carrier 354 and is meshed with each set of planetary gears 352. The connecting bushing 34 is coaxially fixed to the sun gear 353. The reduction pinion 33 is coaxially connected to the planet carrier 354.

[0033] Understandably, with this configuration, the internal gear ring 351 is axially mounted into the housing 31 via a sliding insertion method, remaining synchronously stationary with the housing 31. The reduction pinion 33 and reduction gear 32 are rotatably mounted into the housing 31 via matching bearings. The planetary carrier 354, acting as the power output end, is coaxially coupled with the reduction pinion 33 and operates synchronously. The sun gear 353, acting as the power input end, is coaxially fixed to the connecting bushing 34 and rotatably mounted to the axis of the planetary carrier 354 via matching bearings.

[0034] It should be noted that when the drive device 2 drives the sun gear 353 to rotate, it can drive each set of planet gears 352 to rotate synchronously. Then, with the cooperation of the planet gears 352 and the internal gear ring 351, the planet gears 352 and the planet carrier 354 are driven to revolve around the sun gear 353, so as to output power with a large reduction ratio and drive the reduction pinion 33 to rotate. With the cooperation of the reduction pinion 33 and the reduction gear 32, the power is further reduced and the torque is increased, so as to drive the slip shaft 1 connected to the reduction gear 32 to operate stably.

[0035] To ensure that the reduction pinion 33 and the planetary carrier 354 are matched and coaxially operated, and to ensure that the connecting sleeve 34 and the mounting sleeve 321 are matched and combined with the drive device 2 and the differential shaft 1 respectively, in some embodiments, a spline shaft 356 is fixedly connected to the axis of the planetary carrier 354, and a spline sleeve 331 is fixedly connected to the axis of the reduction pinion 33, which is nested and inserted with the spline shaft 356; the inner walls of the connecting sleeve 34 and the mounting sleeve 321 are respectively provided with a first inner slot 341 and a second inner slot 322, the output shaft of the drive device 2 is nested and inserted with the first inner slot 341, and the differential shaft 1 is nested and inserted with the second inner slot 322.

[0036] Understandably, with this configuration, the spline shaft 356 and spline sleeve 331 can ensure the matching combination of planetary carrier 354 and reduction pinion 33, thereby achieving synchronous rotation of the two. The configuration of the first inner slot 341 and the second inner slot 322 can enable the rapid cooperation of relevant components in the drive device 2, slip shaft 1 and transmission mechanism 3, effectively improving the assembly and debugging speed of various components in the transmission mechanism.

[0037] It should be noted that the direct-drive differential shaft transmission mechanism provided in this application has the following beneficial effects: First, the direct-drive differential shaft transmission mechanism in this application abandons the traditional sprocket and chain drive pair, and adopts a hollow assembly bushing to directly connect with the differential shaft, realizing the "direct connection" between the drive device and the differential shaft, shortening the transmission path, eliminating friction loss in the intermediate links, resulting in high transmission efficiency and significant energy saving effect; Second, the direct-drive differential shaft transmission mechanism in this application adopts a high-rigidity, high-torque, zero-backlash gear transmission mechanism, which can transmit the control commands of the motor to the differential shaft without loss, achieving rapid response and improving repeatability. The positioning accuracy eliminates the impact and lag generated during equipment startup, shutdown, and reversal; thirdly, the direct-drive differential shaft transmission mechanism of this application eliminates the polygonal effect and meshing impact of chain drive, resulting in an extremely smooth transmission process with almost no vibration or noise. It can smoothly and accurately transmit torque, ensuring that the roll material maintains constant tension during winding and unwinding, effectively avoiding quality defects such as uneven winding, stripes, and curling edges caused by transmission fluctuations. It is particularly suitable for winding ultra-thin, high-value copper and aluminum foils; fourthly, the direct-drive differential shaft transmission mechanism of this application uses a reduction gear to act as the transmission component, completely eliminating the need for a fixed positioner. The direct-drive differential shaft transmission mechanism of this application has a compact overall structure, effectively saving equipment installation space and making the production line layout simpler and more reasonable. It also eliminates the complex debugging steps required in traditional chain drives, such as centering the sprocket and tensioning the chain, greatly simplifying the installation and debugging process, improving assembly efficiency and quality, and reducing maintenance costs. Furthermore, the direct-drive differential shaft transmission mechanism of this application completely eliminates the need for lubrication of the chain links, meeting the cleanroom requirements for lithium battery production. This eliminates the possibility of oil contamination of battery electrodes, and eliminates polygonal effects and meshing impacts, resulting in extremely smooth transmission with almost no vibration or noise. It can smoothly and accurately transmit torque to ensure constant tension control. At the same time, the embodiments of this application can effectively avoid quality defects such as uneven winding, stripes, and curling edges caused by transmission fluctuations. It is particularly suitable for winding ultra-thin, high-value copper and aluminum foils. Moreover, the transmission mechanism of the embodiments of this application has a compact structure, which can save installation space, make the equipment layout simpler and more reasonable, and eliminate complex debugging steps such as centering sprockets and tensioning chains, greatly simplifying the installation and debugging process and improving assembly efficiency and quality.

[0038] This application embodiment also provides a winding device, including a slip shaft, which is driven to rotate by the direct-drive slip shaft transmission mechanism in the above embodiment.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A direct-drive differential shaft transmission mechanism, characterized in that: The device includes a slip shaft (1), a drive unit (2), and a transmission mechanism (3). The slip shaft (1) is equipped with a roll of material (4) for feeding or winding. The end of the slip shaft (1) is connected to the drive unit (2) via the transmission mechanism (3). The transmission mechanism (3) includes a housing (31) and a large reduction gear (32), a small reduction gear (33), a connecting bushing (34), and a planetary reduction mechanism (35) assembled in the housing (31). The large reduction gear (32) and the small reduction gear (33) are connected to the drive unit (2). The gear (33) is kept in meshing connection. The connecting bushing (34) and the reduction pinion (33) are respectively connected to the power input end and power output end of the planetary reduction mechanism (35). The drive device (2) is fixedly installed on the housing (31), and the output shaft of the drive device (2) is matched with the connecting bushing (34). The reduction gear (32) is coaxially fixed with a hollow assembly bushing (321), and the assembly bushing (321) is matched with the slip shaft (1).

2. The direct-drive slip shaft transmission mechanism according to claim 1, characterized in that: The end of the slip shaft (1) is fitted with a spacer (12), and a rotary joint (13) is rotatably connected at the center of the spacer (12). The rotary joint (13) is connected to the air supply passage provided inside the slip shaft (1).

3. The direct-drive slip shaft transmission mechanism according to claim 1, characterized in that: The end of the slip shaft (1) is mounted on the adjusting plate (51) in a relatively rotating manner. The two sides of the adjusting plate (51) are respectively equipped with a top block (52) and a anti-rotation plate (53). The housing (31) of the transmission mechanism (3) is nested and positioned with the anti-rotation plate (53).

4. The direct-drive slip shaft transmission mechanism according to claim 1, characterized in that: The planetary reduction mechanism (35) includes an internal gear ring (351), planetary gears (352), a sun gear (353), and a planet carrier (354). The outer wall of the internal gear ring (351) is provided with an outer slot (355), which is nested into the housing (31). The planet carrier (354) is rotatably installed in the housing (31) and arranged inside the internal gear ring (351). The planetary gears (352) are rotatably installed on the planet carrier (354) and include multiple groups arranged in a ring array. Each group of planetary gears (352) meshes with the internal gear ring (351). The sun gear (353) is rotatably installed at the axis of the planet carrier (354) and meshes with each group of planetary gears (352). The connecting bushing (34) is coaxially fixed to the sun gear (353). The reduction pinion (33) is coaxially connected to the planet carrier (354).

5. The direct-drive slip shaft transmission mechanism according to claim 4, characterized in that: A splined shaft (356) is fixedly connected to the center of the planetary carrier (354), and a splined sleeve (331) that is nested and inserted into the center of the reduction pinion (33) is fixedly connected to the center of the planetary carrier (354). The inner walls of the connecting sleeve (34) and the mounting sleeve (321) are respectively provided with a first inner slot (341) and a second inner slot (322). The output shaft of the drive device (2) is nested and inserted into the first inner slot (341), and the slip shaft (1) is nested and inserted into the second inner slot (322).

6. The direct-drive differential shaft transmission mechanism according to claim 1, characterized in that, The drive device (2) includes a servo motor.

7. A winding device, comprising a slip shaft, characterized in that, The slip shaft is driven to rotate by the direct-drive slip shaft transmission mechanism as described in any one of claims 1 to 6.

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