Inner gear ring transmission structure

Abstract

The utility model discloses an inner gear ring transmission structure, which belongs to the field of transmission structures and comprises a casing, a cover and a transmission mechanism, a corresponding number of planetary gears can be sleeved on a connecting shaft mounted at the front end of a planetary plate through sleeve shaft holes according to actual use requirements, and then a limiting ring is sleeved on the connecting shaft. The limiting ring is arranged at the front end of the planetary gear, and after the limiting head is clamped into the limiting groove under the elastic action of the compression spring to fix the limiting ring, the planetary gear can be limited, and the purpose of facilitating increasing and decreasing installation of the planetary gear is achieved. The number of the planetary gears is reasonably increased or decreased according to actual use requirements, torque can be dispersed to the planetary gears and then transmitted to the inner gear ring, the load of a single component is reduced, the overall service life of a transmission mechanism is prolonged, the stability of the transmission mechanism is improved, the balance of a transmission system is improved, and the service life of the transmission system is prolonged. And the problems of stress concentration and abrasion caused by torque concentration are reduced.

Description

Technical Field

[0001] The utility model relates to the field of transmission structures, in particular to an internal gear ring transmission structure. Background Art

[0002] The ring gear transmission structure is a crucial component of planetary gear transmissions. Its structural characteristics and operating principles have a crucial impact on the performance of the entire transmission system. The ring gear's operation primarily relies on its meshing relationship with the planet gears. When the input (such as a motor) drives the sun gear, the planet gears, driven by the sun gear, rotate around the sun gear with the support of the planet carrier while also rotating along the path of the ring gear. This combined rotation and revolution allows the planet gears to mesh with both the sun gear and the ring gear simultaneously, achieving power transmission and speed conversion.

[0003] In the prior art, since the number of planetary gears in the internal ring gear transmission structure is fixed and it is impossible to add planetary gears to the planetary carrier according to actual usage requirements, when the number of planetary gears is small, each planetary gear needs to bear a relatively large load and withstand a greater torque, and the contact points between the planetary gears and the internal ring gear and the sun gear are reduced, thereby affecting the smoothness and efficiency of the transmission. In addition, the planetary gears may be more prone to imbalance when distributing power and bearing loads, further affecting the stability and efficiency of the transmission. At the same time, it is impossible to provide a sufficient reduction ratio according to actual usage requirements. Utility Model Content

[0004] The main purpose of the present invention is to provide an internal gear ring transmission structure, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An internal gear ring transmission structure includes a casing and a cover, which are fixedly connected together by bolts and nuts. A transmission mechanism is provided inside the casing, and the transmission mechanism includes an internal gear ring, a sun gear, a planetary plate, a connecting shaft, planetary gears and a limiting ring. The internal gear ring is fixedly connected to the inside of the casing, and the sun gear is movably connected to the cover through the output shaft at the front end, the planetary plate is movably connected to the casing through the input shaft at the rear end, and the connecting shaft is movably connected to the front end wall of the planetary plate through the rotating shaft at the rear end, the planetary gear is sleeved on the connecting shaft through the sleeve shaft hole at the front end, and the limiting ring is also sleeved on the connecting shaft and is located at the front end of the planetary gear, and the planetary gear is meshed between the internal gear ring and the sun gear.

[0007] Preferably, a plurality of mounting holes are respectively provided on the front end walls of the casing, the cover and the inner gear ring in a circular array, and bolts are inserted into the mounting holes, and the nuts are threadedly connected to the bolts.

[0008] Preferably, a first fixing hole is respectively formed on the front end wall of the housing and the rear end wall of the cover, and a first bearing is fixedly installed in the first fixing hole.

[0009] Preferably, an output shaft is fixedly mounted on the front end wall of the sun gear, and the output shaft is fixedly mounted through the first bearing in the first fixing hole at the front end of the machine cover.

[0010] Preferably, an input shaft is fixedly installed on the rear end wall of the planetary disk, and the input shaft is fixedly installed with the first bearing in the first fixing hole in the rear end wall of the casing, a plurality of second fixing holes are opened on the front end wall of the planetary disk in a circular array, and a second bearing is fixedly installed in the hole of the second fixing hole, a rotating shaft is fixedly installed inside the second bearing, and a connecting shaft is fixedly installed at the front end of the rotating shaft, a groove is opened on the top surface of the connecting shaft, and a retaining ring is fixedly installed in the notch of the groove, a compression spring is fixedly installed on the bottom surface of the groove, and a limit head passing through the retaining ring is fixedly installed on the top end of the compression spring, a sleeve shaft hole is opened on the front end wall of the planetary gear and is sleeved on the outer wall of the connecting shaft through the sleeve shaft hole, and the planetary gear is also meshed with the inner ring gear and the sun gear.

[0011] Preferably, the ring hole of the limiting ring corresponds to the shape of the connecting shaft and is sleeved on the outer wall of the connecting shaft and located at the front end of the planetary gear, and a limiting groove corresponding to the limiting head is provided on the inner wall of the hole of the limiting ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, the transmission mechanism provided can, according to actual use requirements, install a corresponding number of planetary gears through the sleeve shaft holes onto the connecting shaft installed at the front end of the planetary disk, and then install the limit ring onto the connecting shaft, so that the limit ring is placed at the front end of the planetary gear, and under the elastic action of the compression spring, the limit head is clamped in the limit groove to fix the limit ring, which can limit the planetary gears and achieve the purpose of facilitating the increase and decrease of the installation of planetary gears. By reasonably increasing or decreasing the number of planetary gears according to actual use requirements, the torque can be dispersed to multiple planetary gears and then transmitted to the inner ring gear, reducing the load of a single component, helping to improve the overall life and stability of the transmission mechanism, thereby improving the balance of the transmission system and reducing stress concentration and wear problems caused by torque concentration. At the same time, increasing the number of planetary gears can provide more flexibility and possibilities for adjusting the transmission ratio, thereby meeting the transmission requirements under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the transmission mechanism of the present utility model;

[0016] Figure 3 This is a schematic diagram of the structure disassembly of the planetary disk of the present utility model;

[0017] Figure 4 This is a schematic cross-sectional view of the structure of the connecting shaft of the present invention;

[0018] Figure 5 It is a schematic cross-sectional view of the structure of the limit ring of the present utility model.

[0019] In the figure: 1. Casing; 2. Cover; 3. Mounting hole; 4. Bolt; 5. Nut; 6. First fixing hole; 7. First bearing; 8. Transmission mechanism; 9. Internal gear ring; 10. Sun gear; 11. Output shaft; 12. Planetary plate; 13. Input shaft; 14. Second fixing hole; 15. Second bearing; 16. Connecting shaft; 17. Rotating shaft; 18. Planetary gear; 19. Sleeve shaft hole; 20. Limiting ring; 21. Groove; 22. Retaining ring; 23. Compression spring; 24. Limiting head; 25. Limiting slot. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1 - Figure 5 As shown, an internal gear ring transmission structure includes a casing 1 and a cover 2, which are fixedly connected together by bolts 4 and nuts 5. A transmission mechanism 8 is provided inside the casing 1, and the transmission mechanism 8 includes an internal gear ring 9, a sun gear 10, a planetary disk 12, a connecting shaft 16, a planetary gear 18 and a limiting ring 20. The internal gear ring 9 is fixedly connected to the inside of the casing 1, and the sun gear 10 is movably connected to the cover 2 through the output shaft 11 at the front end, the planetary disk 12 is movably connected to the casing 1 through the input shaft 13 at the rear end, and the connecting shaft 16 is movably connected to the front end wall of the planetary disk 12 through the rotating shaft 17 at the rear end, the planetary gear 18 is sleeved on the connecting shaft 16 through the sleeve shaft hole 19 at the front end, and the limiting ring 20 is also sleeved on the connecting shaft 16 and located at the front end of the planetary gear 18, and the planetary gear 18 is meshed between the internal gear ring 9 and the sun gear 10.

[0022] like Figure 1As shown, a plurality of mounting holes 3 are respectively provided on the front end walls of the casing 1, the cover 2 and the inner gear ring 9 in a circular array, and bolts 4 are inserted and installed in the mounting holes 3, and nuts 5 are threadedly connected with the bolts 4. By placing the inner gear ring 9 in the casing 1 and the cover 2 at the front end of the casing 1, the bolts 4 are inserted into the mounting holes 3 provided on the casing 1, the cover 2 and the inner gear ring 9, and the nuts 5 are threadedly connected with the bolts 4, the casing 1 and the cover 2 can be connected together, and the inner gear ring 9 can be connected and fixed inside the casing 1;

[0023] like Figure 1 As shown, first fixing holes 6 are respectively formed on the front end wall of the housing 1 and the rear end wall of the cover 2, and first bearings 7 are fixedly installed in the first fixing holes 6. The first bearings 7 installed in the first fixing holes 6 formed on the front end wall of the housing 1 and the rear end wall of the cover 2 are used to cooperate with the rotation of the output shaft 11 and the input shaft 13 on the sun gear 10 and the planetary plate 12;

[0024] like Figure 1 and Figure 2 As shown, an output shaft 11 is fixedly mounted on the front end wall of the sun gear 10, and the output shaft 11 is fixedly mounted together with the first bearing 7 in the first fixing hole 6 at the front end of the cover 2. When the sun gear 10 is driven, it drives the output shaft 11 to rotate in the first bearing 7 installed in the first fixing hole 6 at the front end of the cover 2;

[0025] like Figure 1 、 Figure 3 and Figure 4As shown, an input shaft 13 is fixedly installed on the rear end wall of the planetary disc 12, and the input shaft 13 is fixedly installed with the first bearing 7 in the first fixing hole 6 in the rear end wall of the housing 1. A plurality of second fixing holes 14 are opened in a circular array on the front end wall of the planetary disc 12, and a second bearing 15 is fixedly installed in the second fixing hole 14. A rotating shaft 17 is fixedly installed inside the second bearing 15, and a connecting shaft 16 is fixedly installed at the front end of the rotating shaft 17. The top surface of the connecting shaft 16 is provided with a groove. 21, and a retaining ring 22 is fixedly installed in the notch of the groove 21, a compression spring 23 is fixedly installed on the bottom surface of the groove 21, and a limit head 24 passing through the retaining ring 22 is fixedly installed on the top of the compression spring 23. A sleeve shaft hole 19 is opened on the front end wall of the planetary gear 18 and is mounted on the outer wall of the connecting shaft 16 through the sleeve shaft hole 19. The planetary gear 18 is also meshed with the inner ring gear 9 and the sun gear 10. After the planetary gear 18 is mounted on the connecting shaft 16 through the sleeve shaft hole 19, the limit ring 20 is set on the connecting shaft 16, so that the limiting ring 20 is placed on the front end of the planetary gear 18, and the elastic extension recovery force of the compression spring 23 in the groove 21 opened on the connecting shaft 16 will make the limiting head 24 at the top of the compression spring 23 snap into the limiting groove 25, so as to clamp and fix the limiting ring 20 on the connecting shaft 16, so as to limit the planetary gear 18 through the limiting ring 20, and prevent the planetary gear 18 from shifting on the connecting shaft 16. This method can be used to achieve convenience according to usage requirements. In order to increase or decrease the number of planetary gears 18, after the input shaft 13 rotates in the first bearing 7 installed in the first fixing hole 6 on the rear end wall of the housing 1, the planetary gears 18 will rotate around the sun gear 10 under the support of the planetary disk 12 under the action of meshing, and will also rotate along the trajectory of the inner ring gear 9. During the rotation, the planetary gears 18 will drive the rotating shaft 17 at the rear end thereof through the connecting shaft 16 to rotate in the second bearing 15 installed in the second fixing hole 14 opened in the front end wall of the planetary disk 12;

[0026] like Figure 5 As shown, the ring hole of the limiting ring 20 corresponds to the shape of the connecting shaft 16 and is mounted on the outer wall of the connecting shaft 16 at the front end of the planetary gear 18, and a limiting groove 25 corresponding to the limiting head 24 is provided on the inner wall of the hole of the limiting ring 20. By mounting the limiting ring 20 on the connecting shaft 16 and using the limiting groove 25 with the limiting head 24 having an elastic force, the limiting ring 20 can be clamped on the connecting shaft 16 to limit the planetary gear 18.

[0027] It should be noted that the present invention is an internal gear ring transmission structure. Before use, a corresponding number of planetary gears 18 are added to the planetary disc 12 according to actual usage conditions. The planetary gears 18 are fitted onto the corresponding connecting shafts 16 on the front end wall of the planetary disc 12 through the sleeve shaft holes 19 opened on the front end wall of the planetary gears 18. When the planetary gears 18 are installed, the protruding limit heads 24 on the outer wall of the connecting shaft 16 are squeezed, and then the limit ring 20 is also fitted onto the connecting shaft 16 so that the limit ring 20 is placed at the front end of the planetary gears 18. In the process of fitting the limit ring 20, the limit ring 20 will squeeze the protruding limit heads 24 on the outer wall of the connecting shaft 16. After the limit ring 20 is fitted to a certain extent, the limit heads 24 are squeezed. 4 will lose the extrusion force of the limit ring 20, and the compression spring 23 installed on the bottom surface of the groove 21 will perform an elastic stretching recovery operation and push the limit head 24 in the outward direction, so that the limit head 24 passes through the retaining ring 22 installed in the compression spring 23 and is clamped into the corresponding limit groove 25 opened on the inner wall of the limit ring 20. In this way, the limit ring 20 can be clamped and fixed to the front end of the connecting shaft 16 and serve the purpose of limiting the installation of the planetary gears 18 on the connecting shaft 16. After all the planetary gears 18 to be used are installed, the cover 2 is placed at the front end of the housing 1, and the sun gear 10 is placed between the several planetary gears 18, and the planetary gears 18 are meshed with the sun gear 10 and the inner ring gear 9 bracket. Together, finally, pass the bolt 4 through the mounting holes 3 opened on the casing 1, the cover 2 and the inner gear ring 9, and screw the nut 5 into the bolt 4 and thread it together, so that the transmission mechanism 8 can be installed and protected in the casing 1. When the input shaft 13 rotates in the first bearing 7 in the first fixing hole 6 at the rear end of the casing 1, the planetary gear 18 will rotate around the sun gear 10 under the support of the planetary disk 12 under the action of meshing, and will also rotate along the trajectory of the inner gear ring 9. When the planetary gear 18 rotates, it will drive the rotating shaft 17 at its rear end through the connecting shaft 16 to rotate in the second bearing 15 installed in the second fixing hole 14 opened on the front end wall of the planetary disk 12, and the planetary gear 18 will drive the planetary gear 18 to rotate in the second bearing 15 installed in the second fixing hole 14 opened on the front end wall of the planetary disk 12. After the sun gear 10 rotates, the output shaft 11 installed at the front end of the sun gear 10 will rotate in the first bearing 7 installed in the first fixing hole 6 at the front end of the engine cover 2 to achieve the purpose of speed reduction transmission. Therefore, by reasonably increasing or decreasing the number of planetary gears 18 according to actual usage requirements, the torque can be dispersed to multiple planetary gears 18 and then transmitted to the inner ring 9, reducing the load of a single component, helping to improve the overall life and stability of the transmission mechanism 8, thereby improving the balance of the transmission system and reducing stress concentration and wear problems caused by torque concentration. At the same time, increasing the number of planetary gears 18 can provide more flexibility and possibilities for adjusting the transmission ratio, thereby meeting the transmission requirements under different working conditions.

[0028] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, various improvements may be made to the present invention and its components may be replaced with equivalents, or some of its technical features may be replaced with equivalents without departing from the scope of the present invention. Anything within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An internal gear ring transmission structure, comprising a housing (1) and a cover (2), wherein the housing (1) and the cover (2) are fixedly connected together by bolts (4) and nuts (5), and characterized in that: A transmission mechanism (8) is provided inside the casing (1), and the transmission mechanism (8) includes an inner ring gear (9), a sun gear (10), a planetary disc (12), a connecting shaft (16), a planetary gear (18) and a limiting ring (20). The inner ring gear (9) is fixedly connected to the inside of the casing (1), and the sun gear (10) is movably connected to the cover (2) through the output shaft (11) at the front end. The planetary disc (12) is movably connected to the casing (1) through the input shaft (13) at the rear end, and the connecting shaft (16) is movably connected to the front end wall of the planetary disc (12) through the rotating shaft (17) at the rear end. The planetary gear (18) is sleeved on the connecting shaft (16) through the sleeve shaft hole (19) at the front end, and the limiting ring (20) is also sleeved on the connecting shaft (16) and located at the front end of the planetary gear (18). The planetary gear (18) is meshed between the inner ring gear (9) and the sun gear (10).

2. The internal gear ring transmission structure according to claim 1, characterized in that: A plurality of mounting holes (3) are respectively provided on the front end walls of the housing (1), the cover (2) and the inner gear ring (9) in a circular array, and bolts (4) are inserted and installed in the mounting holes (3), and the nuts (5) are threadedly connected to the bolts (4).

3. The internal gear ring transmission structure according to claim 2, characterized in that: A first fixing hole (6) is respectively provided on the front end wall of the housing (1) and the rear end wall of the cover (2), and a first bearing (7) is fixedly installed in the first fixing hole (6).

4. The internal gear ring transmission structure according to claim 3, characterized in that: An output shaft (11) is fixedly mounted on the front end wall of the sun gear (10), and the output shaft (11) is fixedly mounted together with a first bearing (7) in a first fixing hole (6) at the front end of the cover (2).

5. The internal gear ring transmission structure according to claim 4, characterized in that: An input shaft (13) is fixedly mounted on the rear end wall of the planetary disc (12), and the input shaft (13) is fixedly mounted together with a first bearing (7) in a first fixing hole (6) in the rear end wall of the housing (1). A plurality of second fixing holes (14) are formed in a circular array on the front end wall of the planetary disc (12), and a second bearing (15) is fixedly mounted in each of the second fixing holes (14). A rotating shaft (17) is fixedly mounted inside the second bearing (15), and a connecting shaft (16) is fixedly mounted at the front end of the rotating shaft (17). A groove (21) is provided on the top surface of the connecting shaft (16), and a retaining ring (22) is fixedly installed in the notch of the groove (21); a compression spring (23) is fixedly installed on the bottom surface of the groove (21), and a limit head (24) passing through the retaining ring (22) is fixedly installed on the top end of the compression spring (23); a sleeve shaft hole (19) is provided on the front end wall of the planetary gear (18) and is sleeved on the outer wall of the connecting shaft (16) through the sleeve shaft hole (19), and the planetary gear (18) is also meshed with the inner ring gear (9) and the sun gear (10).

6. The internal gear ring transmission structure according to claim 5, characterized in that: The ring hole of the limiting ring (20) corresponds to the shape of the connecting shaft (16) and is sleeved on the outer wall of the connecting shaft (16) and located at the front end of the planetary gear (18), and a limiting groove (25) corresponding to the limiting head (24) is opened on the inner wall of the hole of the limiting ring (20).

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