A drive gear set assembly

Abstract

The application provides a transmission gear set assembly, which comprises a transmission wheel coaxially provided with an inner gear ring; a transmission gear arranged in the inner gear ring and engaged with the inner gear ring; and a transmission shaft coaxially arranged with the transmission gear and in transmission connection; the transmission wheel is coaxially arranged with a supporting cylinder, and the end of the supporting cylinder is rotationally matched with a rotating supporting sleeve; the rotating supporting sleeve provides a supporting installation base for the transmission shaft and is rotationally matched with the transmission shaft; through the above structure, the structural layout is optimized, the integrated supporting design of the supporting cylinder and the rotating supporting sleeve is adopted, the supporting components separately arranged for each component in the traditional transmission assembly are omitted, the overall structure is further simplified, the transmission assembly is more compact and smaller in size, can be adapted to small automatic equipment, engineering machinery auxiliary transmission mechanisms and other scenes with strict requirements on assembly space, and the technical problems of large assembly space and easy component interference of the existing transmission assembly are solved.

Description

Technical Field

[0001] This invention relates to the field of transmission gear technology, and more particularly to a transmission gear assembly. Background Technology

[0002] In the field of mechanical transmission, transmission components are the core parts for realizing power transmission, speed regulation, and motion direction conversion, and are widely used in various scenarios such as engineering machinery, automobile manufacturing, automation equipment, and general machinery. Among them, the transmission mechanism consisting of transmission wheels, gears, transmission shafts, and support structures has become an indispensable part of various power equipment due to its compact structure and high power transmission efficiency.

[0003] In existing technologies, conventional transmission components typically employ external meshing transmission, where the transmission wheel and gear are each configured with external teeth. Power transmission is achieved through the external meshing of the gears. Independent support components are required to support the transmission wheel, gear, and transmission shaft separately to ensure stability and coaxiality during transmission. Furthermore, existing transmission wheels are often single-function structures, such as individual gears or pulleys. Their connection to the power unit and their engagement with internal gears often necessitate additional transition structures, further increasing the overall assembly complexity.

[0004] However, as various equipment develops towards miniaturization, lightweighting, and integration, existing transmission components have gradually revealed many shortcomings, making it difficult to meet the needs of actual applications. Firstly, external meshing transmission is limited by structure. The meshing of gears and transmission wheels requires a large assembly space. When the internal installation space of the equipment is limited, the external meshing structure is prone to interference with other components, causing the transmission components to fail to be assembled normally or to run sluggishly after assembly, which seriously limits its application in small equipment. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a transmission gear assembly.

[0006] To achieve the above objectives, the technical solution of the present invention is: a transmission gear assembly, comprising: The drive wheel is coaxially equipped with an internal gear ring; The transmission gear is located inside the internal gear ring and meshes with it. A drive shaft is coaxially arranged and connected to the drive gear; The transmission wheel is coaxially provided with a support cylinder, and the end of the support cylinder is rotatably fitted with a rotating support sleeve. The rotating support sleeve provides a support mounting base for the transmission shaft and is rotatably fitted with both the transmission shaft and the rotating support sleeve.

[0007] Furthermore, the internal gear ring and the support cylinder are respectively located on opposite ends of the transmission wheel; On the same side as the internal gear ring, the end of the internal gear ring is sealed with a cover. The cover is rotatably fitted with the drive shaft, and the drive shaft is axially anti-movement fitted with the cover and the rotating support sleeve.

[0008] Furthermore, the cover is a cylindrical shape coaxially arranged with the transmission wheel, and a support plate is rotatably fitted inside the cover. The support plate is integrally provided with a support cylinder, and the transmission shaft is rotatably fitted with the support cylinder.

[0009] Furthermore, the cover is detachably and fixedly connected to the drive wheel.

[0010] Furthermore, a sliding bearing is provided between the support cylinder and the drive shaft, and a sliding bearing is provided between the support plate and the cover. The end of the cover is closed and has an oil injection hole.

[0011] Furthermore, the support cylinder is provided with a second support plate, which has a through hole that rotates and seals with the outer circumferential surface of the drive shaft. The outer circumferential surface of the second support plate rotates and seals with the inner circumferential surface of the support cylinder.

[0012] Furthermore, the second support plate is axially guided and slidably fitted with the support cylinder and the transmission shaft, and an elastic support rod is provided between the second support plate and the rotating support sleeve, which provides axial support force to the second support plate.

[0013] Furthermore, the elastic support rod includes a cylindrical body, a rigid rod that is coaxially guided and engaged with one end of the cylindrical body, and a compression spring disposed between the rigid rod and the cylindrical body. One of the cylindrical body and the rigid rod is connected to the second support plate, and the other is connected to the rotating support sleeve.

[0014] Furthermore, an end cap is detachably and fixedly connected to the end of the rotating support sleeve.

[0015] Furthermore, the transmission wheel is a gear or a pulley.

[0016] The transmission gear assembly disclosed in this invention has the following advantages compared with the prior art: 1. Compact design, saving assembly space and adapting to the needs of miniaturized equipment: This invention adopts an internal gear ring and transmission gear internal meshing, which effectively reduces the assembly space required for transmission compared to the existing external meshing transmission structure. At the same time, the internal gear ring and the support cylinder are set at opposite ends of the transmission wheel, optimizing the structural layout. The integrated support design of the support cylinder and the rotating support sleeve eliminates the need for separate support components for each part in traditional transmission components, further simplifying the overall structure and making the transmission component more compact and smaller in size. It can adapt to scenarios with strict assembly space requirements, such as small automated equipment and auxiliary transmission mechanisms of engineering machinery, and solves the technical problems of large assembly space and easy component interference in existing transmission components.

[0017] 2. Stable lubrication effect, convenient maintenance, and extended component service life: The coordinated action of the elastic support rod and the second support plate provides stable support for the internal grease, ensuring continuous and effective contact between the sliding bearing 1, the sliding bearing 2, and the meshing parts of the internal gear ring and the transmission gear, thus preventing lubrication failure caused by grease leakage. The sealing design of the cover and the double rotational sealing of the second support plate further enhance the sealing performance, preventing grease leakage and impurities from entering. The oil filling hole facilitates grease replenishment, and the detachable design of the cover and end caps facilitates inspection and maintenance, significantly reducing maintenance difficulty and extending the service life of the transmission components. This solves the defects of poor lubrication effect and inconvenient maintenance in existing lubrication structures.

[0018] 3. Stable support, efficient transmission, and reliable operation: The support cylinder and rotating support sleeve work together to provide a stable support base for the drive shaft. The one-piece molded support cylinder further enhances the rotational stability of the drive shaft. The installation of sliding bearing one and sliding bearing two effectively reduces rotational friction, reduces energy loss, and improves power transmission efficiency. The axial anti-runaway fit of the drive shaft avoids axial displacement of components during transmission, ensuring precise meshing, stable support, and reducing vibration and noise. This solves the problems of complex support structure, low transmission efficiency, and unstable operation of existing transmission components.

[0019] 4. Integrated structure, reduced production costs, and suitability for mass production: This invention integrates transmission, support, sealing, and lubrication functions into one unit, reducing the number of parts, simplifying assembly processes, and lowering production and assembly costs; the elastic support rod, sliding bearing, bolts, etc. are all conventional standardized components, facilitating procurement and mass production; the overall structural design is reasonable, assembly is easy, and the detachable connection method facilitates inspection and maintenance, adapting to the needs of industrial mass production and improving production efficiency.

[0020] 5. Strong adaptability and wide range of applications: The transmission wheel can be selected from gears or pulleys according to actual needs, adapting to two common power transmission methods: gear meshing and belt drive; it can adapt to working environments from -10℃ to 60℃, and is suitable for various scenarios such as small automated equipment, auxiliary transmission mechanisms of engineering machinery, and general mechanical transmission parts. At the same time, through reasonable lubrication and heat dissipation design, it ensures stable operation under different working conditions, further enhancing the practicality and promotional value of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a transmission gear assembly according to the present invention. Figure 1 .

[0022] Figure 2This is a schematic diagram of the overall structure of a first embodiment of a transmission gear assembly according to the present invention. Figure 2 .

[0023] Figure 3 This is a side view of a first embodiment of a transmission gear assembly according to the present invention.

[0024] Figure 4 This is a schematic diagram of the axial structure of a first embodiment of a transmission gear assembly according to the present invention.

[0025] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the present invention at point AA.

[0026] Figure 6 This is a schematic diagram of the structure of the transmission wheel in the first embodiment of a transmission gear assembly of the present invention. Figure 1 .

[0027] Figure 7 This is a schematic diagram of the structure of the transmission wheel in the first embodiment of a transmission gear assembly of the present invention. Figure 2 .

[0028] Figure 8 This is a schematic diagram of the axial structure of the engagement between the transmission wheel and the gear in a first embodiment of a transmission gear assembly according to the present invention.

[0029] Figure 9 This is a schematic diagram of the meshing structure of the transmission wheel and gear in a first embodiment of a transmission gear assembly according to the present invention.

[0030] Figure 10 A schematic diagram of the transmission shaft and gear in this invention.

[0031] Figure 11 This is a cross-sectional view of the elastic support rod in this invention.

[0032] Figure 12 This is a side view of the structure according to the second embodiment of the present invention.

[0033] In the diagram: 1. Drive wheel; 10. Cover; 100. Oil injection hole; 11. Support plate one; 110. Bearing seat; 111. Sliding bearing one; 12. Sliding bearing two; 13. Support cylinder; 14. Internal gear ring; 2. Drive shaft; 20. Drive gear; 3. Rotating support sleeve; 31. End cover; 32. Shaft seal; 33. Bearing two; 34. Bearing three; 40. Bearing one; 5. Elastic support rod; 51. Compression spring; 52. Rigid rod; 53. Connecting screw; 6. Support plate two; 60. Connecting hole. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention. Example 1

[0035] This application provides a transmission gear assembly that addresses the problems of large space occupation and easy component interference in existing transmission components using external meshing transmission. It also solves the shortcomings of existing transmission gears 1 having a single function and complex assembly, achieving a compact layout of the transmission structure and improving the stability of power transmission. For specific implementation details, please refer to [reference needed]. Figures 1 to 11 The specific structure includes a transmission wheel 1 with an internal cavity. An internal gear ring 14 is installed on the inner wall of the cavity. The internal gear ring 14 and the transmission wheel 1 are integrally formed or detachably fixed by bolts to ensure connection strength. It also includes a transmission gear 20, which is located inside the internal gear ring 14. The transmission gear 20 and the transmission wheel 1 are eccentrically arranged, and the transmission gear 20 meshes with the internal gear ring 14 to form a transmission engagement. A support cylinder 13 is provided on one side of the transmission wheel 1. The support cylinder 13 is integrally formed with the transmission wheel 1 or detachably fixed. During operation, a bearing mounting part is provided on the outside of the support cylinder 13, and a bearing 40 is installed. In use, the bearing 40 is connected to the mounting bracket, thus providing a foundation for mounting support of the transmission wheel 1. A bearing 33 is installed at the end of the support cylinder 13. A rotating support sleeve 3 is rotatably engaged with the bearing 33, and the rotating support sleeve 3 and the support cylinder 13 are axially anti-movement engaged.

[0036] The transmission gear 20 is coaxial and has a transmission shaft 2 for transmission. The rotating support sleeve 3 is provided with a bearing seat 110 coaxial with the transmission shaft 2. The bearing seat 110 is provided with a bearing 34, which is sleeved on the transmission shaft 2. The rotating support sleeve 3 serves as the support and mounting base for the transmission shaft 2 and rotates with the transmission shaft 2 to achieve stable support for the transmission shaft 2. A shaft seal 32 is also provided on one side of the bearing 34 to achieve a dustproof effect.

[0037] With the above configuration, the internal gear ring 14 and the transmission gear 20 are internally meshed, which significantly reduces the assembly space required for transmission engagement compared to the existing external meshing structure, making the overall structure of the transmission assembly more compact. The cooperation between the support cylinder 13 and the rotating support sleeve 3 provides a stable support and installation base for the transmission shaft 2, while achieving rotational engagement to ensure smooth rotation of the transmission shaft 2, thus solving the problems of dispersed support structure and poor coaxiality in the existing transmission assembly. The transmission wheel 1 can be directly connected to the power unit without the need for an additional transition structure, improving the power transmission efficiency.

[0038] Furthermore, in order to further optimize the transmission structure, refer to Figures 3 to 5In this application, the internal gear ring 14 and the support cylinder 13 are respectively located on opposite ends of the transmission wheel 1. That is, the internal gear ring 14 is fixed on one side of the transmission wheel 1, and the support cylinder 13 is coaxially fixed on the other side, forming a symmetrical and compact layout. On the same side as the internal gear ring 14, the end of the internal gear ring 14 is sealed with a cover 10. One end of the transmission shaft 2 extending out of the transmission gear 20 is rotatably engaged with the cover 10. In this way, the cover 10 supports the other end of the transmission shaft 2, and the support stability is improved by rotating the support sleeve 3 and the cover 10 to support both sides of the transmission shaft 2. The transmission shaft 2 is axially anti-movement engaged with the cover 10 and the rotating support sleeve 3, and the axial displacement of the cover 10, the rotating support sleeve 3 and the transmission shaft 2 is limited by the limiting structure (such as a snap ring or a step).

[0039] With the above arrangement, the internal gear ring 14 and the support cylinder 13 are respectively located at both ends of the transmission wheel 1, making reasonable use of space, avoiding interference between components, and further optimizing the compactness of the overall structure; the sealing arrangement of the cover 10 can prevent dust and impurities from entering the meshing part of the internal gear ring 14 and the transmission gear 20, while facilitating the storage of lubricating medium and protecting the transmission components; the axial anti-running fit of the transmission shaft 2 effectively limits the axial displacement of each component, avoids meshing deviation and unstable support caused by axial run-out during transmission, and improves transmission stability.

[0040] Further, refer to Figure 5 To further optimize the support structure on the side of the cover 10, provide stable rotational support for the drive shaft 2, and improve the sealing performance inside the cover 10, the cover 10 is configured as a cylindrical structure coaxial with the drive wheel 1. A support plate 11 is rotatably fitted inside the cover 10, and the support plate 11 is rotatably connected to the inner wall of the cover 10. A support cylinder 13 is integrally provided on the support plate 11, and the drive shaft 2 is rotatably fitted with the support cylinder 13 to achieve double support for the drive shaft 2 and ensure smooth rotation of the drive shaft 2.

[0041] The rotational engagement between the cylindrical cover 10 and the support plate 11 ensures both the rotational flexibility of the support plate 11 and the sealing of the interior of the cover 10. The support cylinder 13, integrally formed by the support plate 11, provides additional support points for the transmission shaft 2, improving the rotational stability and coaxiality of the transmission shaft 2, preventing the transmission shaft 2 from shifting during rotation, and further ensuring the reliability of the overall transmission.

[0042] Furthermore, to facilitate the disassembly and installation of the cover 10, and to facilitate the inspection, maintenance, and replenishment of lubricating media for components such as the internal transmission gear 20 and internal gear ring 14, refer to... Figure 5 The cover 10 and the transmission wheel 1 are detachably fixedly connected. Conventional detachable structures such as bolt connection and snap-fit ​​connection can be used. Bolt connection is preferred. The cover 10 is fixed to the end face of the transmission wheel 1 by multiple evenly distributed bolts to ensure connection strength and sealing, while facilitating disassembly.

[0043] The detachable connection method solves the problems of traditional sealing structures being difficult to disassemble and inconvenient to maintain. When it is necessary to inspect internal components or clean impurities in the meshing parts, the cover 10 can be quickly disassembled, making the operation convenient, reducing maintenance difficulty and cost, and improving the maintainability of the transmission components.

[0044] Furthermore, to reduce frictional losses in rotating parts, extend component lifespan, facilitate the replenishment of lubricating media to ensure lubrication effectiveness, and improve the overall transmission stability of the assembly, [reference needed]. Figure 5 A sliding bearing 111 is provided between the support cylinder 13 integrally formed by the support plate 11 and the transmission shaft 2. The sliding bearing 111 is fitted around the outer periphery of the transmission shaft 2 and pressed into the support cylinder 13. Oil holes are drilled on the side walls of the sliding bearing on the side walls of the support cylinder 13. A sliding bearing 12 is provided between the support plate 11 and the cover 10. The sliding bearing 12 is fitted around the outer periphery of the support plate 11 and fits against the inner wall of the cover 10, so that the support plate 11 and the cover 10 form a rotational fit, and there is sliding friction between them. The end of the cover 10 is set as a closed structure. At the same time, an oil injection hole 100 is preset at the end of the cover 10. The oil injection hole 100 is used to install a self-sealing oil injection nozzle to replenish grease to the inside of the cover 10 and the meshing part of the internal gear ring 14 and the transmission gear 20.

[0045] By adopting the above-described configuration, the sliding bearing 111 and sliding bearing 12 effectively reduce the frictional resistance of each rotating mating part, reduce component wear, and extend the service life of the transmission assembly. Furthermore, the sliding bearings have high precision and good axial support, achieving a higher support effect. The closed configuration at the end of the cover 10 prevents leakage of lubricating medium, and the oil filling hole 100 provides a convenient channel for replenishing lubricating medium. Lubrication can be completed without disassembling the cover 10, improving maintenance convenience.

[0046] Furthermore, in order to further improve the sealing performance inside the cover 10, prevent leakage of lubricating medium, and ensure the smooth rotation of the support plate 6, support cylinder 13, and drive shaft 2, refer to Figure 5 , Figure 10The second support plate 6 is disposed inside the integrally formed support cylinder 13. The second support plate 6 has a through hole, which achieves a rotational sealing fit with the outer circumferential surface of the drive shaft 2 (a sealing effect can be achieved by setting a sealing ring). The outer circumferential surface of the second support plate 6 also achieves a rotational sealing fit with the inner circumferential surface of the support cylinder 13. Similarly, the sealing effect can be enhanced by a sealing ring, ensuring that the lubricating medium inside the cover 10 does not leak from the fitting gap. This double rotational sealing fit structure effectively prevents the leakage of the lubricating medium and confines the lubricating medium within a certain range, ensuring that the lubricating medium can continuously act on the meshing parts of the sliding bearing 111, the second sliding bearing 12, and the internal gear ring 14 and the drive gear 20, guaranteeing stable lubrication. At the same time, the sealing structure does not affect the rotational flexibility of each component, ensuring smooth rotation of the drive shaft 2 and the second support plate 6 without increasing transmission resistance.

[0047] Further, refer to Figure 5 , Figure 10 In this application, the second support plate 6, the support cylinder 13, and the transmission shaft 2 are all axially guided slidingly fitted, that is, the second support plate 6 can slide axially along the inner wall of the support cylinder 13 and the transmission shaft 2; an elastic support rod 5 is provided between the second support plate 6 and the rotating support sleeve 3, and the two ends of the elastic support rod 5 are respectively connected to the second support plate 6 and the rotating support sleeve 3, and the elastic support rod 5 provides continuous axial support force to the second support plate 6.

[0048] The axial guide sliding fit facilitates the axial fine adjustment of the second support plate 6 under the action of the elastic support rod 5; the axial support force provided by the elastic support rod 5 can limit the filling space of the grease filled between the second support plate 6 and the cover 10, ensuring that the grease can fully contact the sliding bearing 111, the second sliding bearing 12, the transmission gear 20, and the gear ring, ensuring the anti-slip effect and improving the adaptability and service life of the transmission components.

[0049] For details, please refer to Figure 10 , Figure 11 The elastic support rod 5 includes a cylindrical body, a rigid rod 52, and a compression spring 51. The cylindrical body has a hollow structure. The rigid rod 52 is coaxially guided with one end of the cylindrical body, meaning that the rigid rod 52 can slide and extend along the axial direction of the cylindrical body. The compression spring 51 is located between the rigid rod 52 and the cylindrical body. The two ends of the compression spring 51 abut against the end of the rigid rod 52 and the inner wall of the cylindrical body, respectively, forming an elastic telescopic structure. A connecting screw 53 is provided at the end of the cylindrical body, and a screw is also provided at the end of the rigid rod 52. The support plate 6 is provided with a connecting hole 60 for connecting to the elastic support rod 5. One of the rigid rods 52 is connected to the support plate 6, and the other is connected to the rotating support sleeve 3. Preferably, the cylindrical body is fixedly connected to the rotating support sleeve 3, and the rigid rod 52 is threadedly sealed to the connecting hole 60 of the support plate 6 to ensure stable transmission of axial support force.

[0050] Further, refer to Figure 5 An end cap 31 is installed at the end of the rotating support sleeve 3 using a detachable fixed connection method. Bolt connection, snap-fit ​​connection, or other methods can be used, with bolt connection being preferred to ensure the sealing performance and connection strength of the end cap 31, while also facilitating disassembly.

[0051] The end cap 31 effectively seals the end of the rotating support sleeve 3, preventing external impurities from entering the interior, avoiding wear on the sliding parts and elastic support rod 5, and extending the service life of the components; the detachable connection method makes it easy to remove the end cap 31 to inspect and maintain the sliding structure inside the elastic support rod 5 and the rotating support sleeve 3, improving the maintainability of the transmission components.

[0052] As a specific implementation method, the transmission wheel 1 can be selected as a gear according to the actual power transmission requirements. When the transmission wheel 1 is a gear, its outer circumferential surface is provided with teeth, which can directly mesh with the gear of the power device for transmission. Example 2

[0053] As another specific implementation method, refer to Figure 12 The transmission wheel 1 can also be configured as a pulley. When the transmission wheel 1 is a pulley, its outer circumferential surface is provided with a belt groove, which can be connected to the output wheel of the power device through a belt. Other structures are the same as those in Embodiment 1, and will not be described in detail here.

[0054] By setting the transmission wheel 1 to either a gear or a pulley, this application enables the transmission gear 20-group assembly of the present invention to be compatible with two common power transmission methods: gear meshing and belt drive. It can be applied to different types of mechanical equipment, greatly expanding the scope of application and enhancing the practicality and promotional value of the present invention.

[0055] It should be noted that, in the embodiments of this application, the lubricating medium is selected as grease or lubricating oil. When using grease, the transmission gear 20-set assembly of the present invention is suitable for mechanical equipment with an operating environment temperature of -10℃ to 60℃ that requires continuous and stable power transmission. Specifically, it can be divided into the following scenarios, and different scenarios can adapt to the use of grease and heat dissipation requirements: 1. Small automated equipment: such as small conveyors, precision instrument transmission mechanisms, etc. The internal assembly space of such equipment is limited, and the requirements for the compactness of the transmission components are high. The working load is moderate and the operation is stable. The internal meshing structure and integrated support design of this invention can effectively save assembly space. At the same time, the lubrication structure of the elastic support rod 5 and the support plate 6 can ensure the stable retention of grease, meet the needs of long-term stable operation of the equipment, and the heat generated by the equipment operation is small. The grease is not easy to deteriorate due to high temperature. The design of the oil filling hole 100 makes it easy to replenish the grease regularly and the maintenance is convenient.

[0056] 2. Auxiliary transmission mechanisms for construction machinery: such as auxiliary transmission parts of mini excavators and loaders. The working environment of such equipment is relatively complex, with a lot of dust and impurities. The cover 10, end cover 31 and sealing structure of the present invention can effectively prevent impurities from entering the transmission components and protect the lubrication effect. At the same time, the equipment will generate a certain amount of heat when it is working. The cylindrical structure and cavity structure of the transmission components can achieve a certain amount of heat dissipation, avoid the loss or deterioration of grease due to high temperature, facilitate regular maintenance, and ensure stable operation of the transmission components under moderate load and intermittent working conditions.

[0057] 3. General mechanical transmission parts: such as the transmission mechanism of small water pumps and fans. These types of equipment have stable working loads and long operating times, and have high requirements for the service life and lubrication reliability of transmission components. The structure of the elastic support rod 5 compressing grease can ensure that the sliding bearing 111, sliding bearing 12 and meshing parts are continuously lubricated, reducing wear. The oil filling hole 100 facilitates the regular replenishment of grease, which is suitable for the lubrication needs of long-term operation of the equipment. At the same time, the heat generated by the operation of the equipment can be dissipated by the transmission wheel 1 itself, avoiding grease failure and ensuring the long-term stable operation of the transmission components.

[0058] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A transmission gear assembly, characterized in that, include: The transmission wheel (1) is coaxially equipped with an internal gear ring (14). The transmission gear (20) is disposed inside the internal gear ring (14) and meshes with the internal gear ring (14); The drive shaft (2) is coaxially arranged and connected to the drive gear (20); The transmission wheel (1) is coaxially provided with a support cylinder (13), and the end of the support cylinder (13) is rotatably fitted with a rotating support sleeve (3). The rotating support sleeve (3) provides a support mounting base for the transmission shaft (2) and is rotatably fitted with the transmission shaft (2) and the rotating support sleeve (3).

2. The transmission gear assembly according to claim 1, characterized in that, The internal gear ring (14) and the support cylinder (13) are respectively located on opposite ends of the transmission wheel (1); On the same side as the internal gear ring (14), the end of the internal gear ring (14) is sealed with a cover (10). The cover (10) is rotatably engaged with the drive shaft (2), and the drive shaft (2) is axially anti-movement engaged with the cover (10) and the rotating support sleeve (3).

3. The transmission gear assembly according to claim 2, characterized in that, The cover (10) is a cylindrical shape coaxial with the transmission wheel (1). A support plate (11) is rotatably fitted inside the cover (10). A support cylinder (13) is integrally fitted on the support plate (11). The transmission shaft (2) is rotatably fitted with the support cylinder (13).

4. A transmission gear assembly according to claim 3, characterized in that, The cover (10) is detachably and fixedly connected to the drive wheel (1).

5. A transmission gear assembly according to claim 3, characterized in that, A sliding bearing (111) is provided between the support cylinder (13) and the transmission shaft (2), and a sliding bearing (12) is provided between the support plate (11) and the cover (10). The end of the cover (10) is closed and has an oil injection hole (100).

6. A transmission gear assembly according to claim 5, characterized in that, The support cylinder (13) is provided with a support plate two (6), and the support plate two (6) is provided with a through hole that rotates and seals with the outer peripheral surface of the transmission shaft (2). The outer peripheral surface of the support plate two (6) rotates and seals with the inner peripheral surface of the support cylinder (13).

7. A transmission gear assembly according to claim 6, characterized in that, The second support plate (6) is axially guided and slidably fitted with the support cylinder (13) and the transmission shaft (2). An elastic support rod (5) is provided between the second support plate (6) and the rotating support sleeve (3), and the elastic support rod (5) provides axial support force to the second support plate (6).

8. A transmission gear assembly according to claim 7, characterized in that, The elastic support rod (5) includes a cylindrical body, a rigid rod (52) that is coaxially guided and cooperates with one end of the cylindrical body, and a compression spring (51) disposed between the rigid rod (52) and the cylindrical body. One of the cylindrical body and the rigid rod (52) is connected to the second support plate (6), and the other is connected to the rotating support sleeve (3).

9. A transmission gear assembly according to claim 8, characterized in that, The end cap (31) is detachably and fixedly connected to the end of the rotating support sleeve (3).

10. A transmission gear assembly according to any one of claims 1-9, characterized in that, The transmission wheel (1) is a gear or a pulley.

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