Planetary reduction gear

Abstract

The utility model provides a kind of planetary reducer, comprising: shell, the input shaft and output shaft located in same axis are respectively provided on the shell, first wheel group and second wheel group are sequentially provided between the input shaft and output shaft, the input shaft is connected on the first wheel group;Wherein, the shaft center of the output shaft is threadedly connected with control lever, the end of the control lever is rotatably provided with speed change lever, the first wheel group and second wheel group are matched with the speed change lever;Inner gear.The planetary reducer provided by the utility model, by reasonable design, reduces the number of parts in speed reducer, optimizes the efficiency of assembly and maintenance, the first wheel group and second wheel group are sequentially distributed and installed to the shell with speed change lever as the shaft center, so that the speed reducer is lightweight and miniaturized, and the parts on the speed change lever can control the speed of the speed reducer by the control lever to adapt to the transmission demand of different occasions.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and more specifically to a planetary speed reducer. Background Technology

[0002] Planetary gearboxes are commonly used in industrial transmissions as actuators of power sources. During operation, they reduce speed and improve the output stability of connected transmission equipment.

[0003] Planetary gear trains are one of the important transmission components of planetary reducers. Planetary gears consist of a sun gear, planet gears, and a ring gear. The sun gear drives the planet gears to rotate on the ring gear, thereby driving the output shaft of the reducer to rotate, improving the smoothness of transmission and load-bearing capacity. To increase the output torque of planetary reducers, multi-stage gear trains are often designed in planetary reducers, which increases the number of parts required in the reducer, making the structure more complex. This makes assembly or maintenance more difficult and requires more disassembly and assembly time, thus reducing the disassembly and assembly efficiency of planetary gear reducers. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies and to solve the problem of complex and numerous multi-stage planetary gear components. Therefore, it is necessary to provide a planetary gear reducer with compact components and quick assembly / disassembly.

[0005] To achieve the above objectives, this utility model can be implemented through the following technical solution: a planetary reducer, comprising:

[0006] A housing, on which an input shaft and an output shaft located on the same axis are respectively provided, and a first wheel group and a second wheel group are arranged sequentially between the input shaft and the output shaft, and the input shaft is snapped onto the first wheel group;

[0007] The output shaft is threaded with an adjustment rod at its center, and a gear shift lever is rotatably mounted at the end of the adjustment rod. Both the first and second wheel sets are engaged with the gear shift lever.

[0008] An internal gear is disposed within the housing and meshes with the first gear set and the second gear set.

[0009] In this embodiment of the utility model, the gear shift lever is respectively provided with a top plate and a conical plate; the first gear set includes a first sun gear, a first planet carrier, and first planet gears arranged in a circumferential array on the first planet carrier. The first planet gears mesh with the first sun gear, the first planet carrier engages with the input shaft, and the first sun gear is provided with a linkage plate that engages with the gear shift lever. The top plate abuts against the first sun gear.

[0010] The second gear set includes a second sun gear, a second planet carrier, and second planet gears arranged in a circumferential array on the second planet carrier. The second planet gears mesh with the second sun gear, the second planet carrier cooperates with the first planet gear, and the second sun gear abuts against the conical disk.

[0011] In this embodiment of the utility model, the end of the gear shift lever is provided with a second boss, and the first sun gear is provided with a linkage disc that engages with the second boss.

[0012] In this embodiment of the utility model, the gear shift lever is provided with a limiting platform that cooperates with the output shaft.

[0013] In this embodiment of the utility model, a guide sleeve is provided on the first sun gear, a first chuck is slidably disposed inside the guide sleeve and abuts against the top plate, a spring is provided between the first chuck and the guide sleeve, and a transmission disc is provided on the second planetary carrier and abuts against the chuck;

[0014] The second sun gear is provided with a second chuck, which abuts against the conical disk.

[0015] In this embodiment of the invention, the first chuck is provided with chuck platforms arranged in a circular array, and the chuck platforms are engaged with the transmission disk.

[0016] In this embodiment of the invention, the conical disk is provided with protrusions arranged in a circumferential array, and the protrusions are engaged with the second chuck.

[0017] In this embodiment of the invention, the number of the first planetary gears and the second planetary gears are the same.

[0018] In this embodiment of the utility model, a first support rod is rotatably mounted on the first planetary carrier, and the first support rod engages with the first planetary gear;

[0019] A second support rod is rotatably mounted on the second planetary carrier, and the second support rod engages with the second planetary gear.

[0020] In this embodiment of the utility model, a top cover is provided on the housing, and a square block is provided between the top cover and the housing, and the square block is engaged with the internal gear.

[0021] Compared with the prior art, the advantages of this application are: through reasonable design, the number of parts in the reducer is reduced, and the efficiency of assembly and maintenance is optimized. The first and second wheel sets are both installed in the housing in sequence with the gear shift lever as the axis, making the reducer lightweight and miniaturized. At the same time, the parts on the gear shift lever can be adjusted by adjusting the speed of the reducer to adapt to the transmission requirements of different occasions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure after the parts are assembled;

[0023] Figure 2 This is a schematic diagram of the internal parts structure after the top cover and the shell are separated;

[0024] Figure 3 This is a structural diagram of the planetary gear train after its components have been disassembled.

[0025] Figure 4 It is a partial sectional plan view of the entire structure;

[0026] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Housing; 11. Input shaft; 111. First boss; 12. Output shaft; 13. Square block; 14. Internal gear; 15. Top cover; 16. Split hole; 2. First gear set; 21. First planetary carrier; 22. First support rod; 23. First sun gear; 231. Linkage plate; 232. Clamping platform; 233. Spring; 235. Guide sleeve; 236. First chuck; 24. First planetary gear; 25. Front cover; 251. Locking element; 3. Second gear set; 31. Second planetary carrier; 32. Second support rod; 33. Second sun gear; 331. Second chuck; 34. Second planetary gear; 35. Transmission plate; 4. Gear shift lever; 41. Limiting platform; 42. Conical plate; 421. Protrusion block; 43. Second boss; 44. Top plate. Detailed Implementation

[0029] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0030] like Figure 1-5 As shown, a planetary gear reducer includes:

[0031] The housing 1 has an input shaft 11 and an output shaft 12 located on the same axis. A first wheel group 2 and a second wheel group 3 are arranged between the input shaft 11 and the output shaft 12 in sequence. The input shaft 11 is snapped onto the first wheel group 2.

[0032] Among them, the output shaft 12 is threadedly connected to the shaft center with an adjustment rod, and the end of the adjustment rod is rotatably equipped with a gear shift lever 4. The first gear group 2 and the second gear group 3 are both matched with the gear shift lever 4.

[0033] The internal gear 14 is disposed inside the housing 1 and meshes with the first gear set 2 and the second gear set 3.

[0034] Specifically, such as Figure 1 As shown, the input shaft 11 is located on the left side of the housing 1, while the output shaft 12 is located on the right side of the housing 1. A central axis is set at the center of the input shaft 11 and the output shaft 12. The first gear group 2 and the second gear group 3 are sequentially distributed into the housing 1 along their central axes. The first gear group 2 is closer to the input shaft 11, while the second gear group 3 is closer to the output shaft 12. The gears of this reducer are all helical gears and have two speed change states.

[0035] In the first-stage speed change, the control lever in the output shaft 12 rotates and pushes the gear shift lever 4, so that the second boss 43 at the end of the gear shift lever 4 engages with the linkage disk 231 on the first sun gear 23. At this time, the gear shift lever 4 is not engaged with the parts on the second gear set 3, thereby enabling the output shaft 12 to achieve the first-stage speed change.

[0036] In the second-stage transmission, the output shaft 12 rotates the control lever, pulling back the gear shift lever 4 so that the second boss 43 of the gear shift lever 4 disengages from the linkage disc 231. At this time, the top disc 44 pushes the first chuck 236 along the guide sleeve 235 towards the second planetary carrier 31 until the chuck 232 on the top disc 44 engages with the transmission disc 35. Simultaneously, the conical disc 42 engages with the second chuck 331 as the gear shift lever 4 moves. At this time, the input shaft 11 rotates, driving the first planetary gear 24 to mesh with the first sun gear 23 via the first planetary carrier 21. The first sun gear 23 drives the second planetary gear 34 to rotate through the second planetary carrier 31, thereby driving the output shaft 12 to rotate through the second sun gear 33. During the second gear shift, the gear shift lever 4 and the parts on the first gear set 2 are not in a snap-fit ​​state. Furthermore, a split hole 16 is provided on the housing 1. The split hole 16, in conjunction with the lever, can be used to remove the internal gear 14 from the housing 1, improving the splitting efficiency of the internal gear 14. At the same time, the speed adjustment parts are set on the gear shift lever 4 to improve the utilization rate of the internal space of the housing 1.

[0037] As a further embodiment of this utility model, the gear shift lever 4 is provided with a top plate 44 and a conical plate 42. The first gear set 2 includes a first sun gear 23, a first planet carrier 21, and first planet gears 24 arranged in a circular array on the first planet carrier 21. The first planet gears 24 mesh with the first sun gear 23, the first planet carrier 21 engages with the input shaft 11, and the first sun gear 23 is provided with a linkage plate 231 that engages with the gear shift lever 4. The top plate 44 abuts against the first sun gear 23. Next, the second gear set 3 includes a second sun gear 33, a second planet carrier 31, and second planet gears 34 arranged in a circular array on the second planet carrier 31. The second planet gears 34 mesh with the second sun gear 33, the second planet carrier 31 cooperates with the first planet gear 24, the second sun gear 33 abuts against the conical disk 42, the top disk 44 is rotatably mounted on the gear shift lever 4, and the conical disk 42 is engaged with the gear shift lever 4, so that the parts on the second planet carrier 31 do not obstruct the rotation of the gear shift lever 4.

[0038] As a further embodiment of this utility model, the end of the gear shift lever 4 is provided with a second protrusion 43, and the first sun gear 23 is provided with a linkage disk 231 that engages with the second protrusion 43. The engagement of the second protrusion 43 with the linkage disk 231 enables a single-stage gear shift. When the input lever is connected to the external motor for output, the first planetary carrier 21 drives the first planetary gear 24 to rotate, thereby driving the output shaft 12 to rotate through the first sun gear 23. At this time, the second gear set 3 is in a stationary state.

[0039] As a further embodiment provided in this utility model, the gear shift lever 4 is provided with a limiting platform 41 that cooperates with the output shaft 12. The limiting platform 41 serves as a guide so that the gear shift lever 4 can only move along the axial direction of the output shaft 12, while the gear shift lever 4 and the output shaft 12 can rotate synchronously.

[0040] As a further embodiment of this utility model, a guide sleeve 235 is provided on the first sun gear 23, and a first chuck 236 that abuts against the top plate 44 is slidably provided inside the guide sleeve 235. A spring 233 is provided between the first chuck 236 and the guide sleeve 235. A transmission plate 35 that abuts against the chuck is provided on the second planetary carrier 31. A second chuck 331 is provided on the second sun gear 33. The second chuck 331 abuts against the conical plate 42. The first chuck 236 is kept away from the transmission plate 35 by the pull-back effect of the spring 233. A guide block is provided on the first chuck 236 to move in the opposite direction along the axis of the guide sleeve 235. At the same time, when the first sun gear 23 rotates, it will drive the first chuck 236 to rotate. The second chuck 331 is engaged with the second sun gear 33.

[0041] As a further embodiment of this utility model, the first chuck 236 is provided with chuck platforms 232 arranged in a circular array. The chuck platforms 232 are engaged with the transmission disk 35. The chuck platforms 232 improve the connection effect between the first chuck 236 and the transmission disk 35, thereby improving the transmission smoothness of the first transmission wheel and the second planetary carrier 31.

[0042] As a further embodiment of this utility model, the conical disk 42 is provided with protrusions 421 arranged in a circumferential array. The protrusions 421 engage with the second chuck 331. The protrusions 421 improve the engagement effect between the conical disk 42 and the second chuck 331, thereby improving the transmission smoothness between the second sun gear 33 and the output shaft 12.

[0043] As a further embodiment provided by this utility model, the number of first planetary gears 24 and second planetary gears 34 is the same, the number of first planetary gears 24 and second planetary gears 34 is at least three sets, and both sets of planetary gears mesh with the internal gear 14.

[0044] As a further embodiment of this utility model, a first support rod 22 is rotatably mounted on the first planetary carrier 21, and the first support rod 22 engages with the first planetary gear 24. A second support rod 32 is rotatably mounted on the second planetary carrier 31, and the second support rod 32 engages with the second planetary gear 34. Both the first planetary carrier 21 and the second planetary carrier 31 are provided with bearings, and the first support rod 22 and the second support rod 32 are respectively engaged with the bearings to improve the rotation effect of the first planetary gear 24 and the second planetary gear 34. Furthermore, the first support rod 22 and the second support rod 32 are provided with retaining rings to restrict the movement direction of the first planetary gear 24 and the second planetary gear 34 and prevent the two sets of gear trains from disengaging from the support rods.

[0045] As a further embodiment of this utility model, a top cover 15 is provided on the housing 1. The top cover 15 is fixed to the housing 1 by bolts to support and fix the internal gear 14, the first gear set 2 and the second gear set 3. A square block 13 is provided between the top cover 15 and the housing 1. The square block 13 is engaged with the internal gear 14. A first boss 111 is provided on the input shaft 11, and a front end cover 25 is provided on the first planetary carrier 21. A locking member 251 is provided on the front end cover 25 to engage with the first boss 111, so that the input shaft 11 is engaged with the first planetary carrier 21 through the locking member 251 to drive the operation of the first gear set 2.

[0046] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0047] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A planetary gear reducer, characterized in that, include: A housing, on which an input shaft and an output shaft located on the same axis are respectively provided, and a first wheel group and a second wheel group are arranged sequentially between the input shaft and the output shaft, and the input shaft is snapped onto the first wheel group; The output shaft is threaded with an adjustment rod at its center, and a gear shift lever is rotatably mounted at the end of the adjustment rod. Both the first and second wheel sets are engaged with the gear shift lever. An internal gear is disposed within the housing and meshes with the first gear set and the second gear set.

2. The planetary gear reducer according to claim 1, characterized in that, The gear shift lever is equipped with a top plate and a conical plate respectively; The first gear set includes a first sun gear, a first planet carrier, and first planet gears arranged in a circular array on the first planet carrier. The first planet gears mesh with the first sun gear, the first planet carrier engages with the input shaft, and the first sun gear is provided with a linkage disc that engages with the gear shift lever. The top disc abuts against the first sun gear. The second gear set includes a second sun gear, a second planet carrier, and second planet gears arranged in a circumferential array on the second planet carrier. The second planet gears mesh with the second sun gear, the second planet carrier cooperates with the first planet gear, and the second sun gear abuts against the conical disk.

3. A planetary gear reducer according to claim 2, characterized in that, The end of the gear shift lever is provided with a second boss, and the first sun gear is provided with a linkage disc that engages with the second boss.

4. A planetary gear reducer according to claim 2, characterized in that, The gear shift lever is equipped with a limiting platform that cooperates with the output shaft.

5. A planetary gear reducer according to claim 2, characterized in that, A guide sleeve is provided on the first sun gear, and a first chuck is slidably disposed inside the guide sleeve and abuts against the top plate. A spring is provided between the first chuck and the guide sleeve, and a transmission disc is provided on the second planetary carrier and abuts against the chuck. The second sun gear is provided with a second chuck, which abuts against the conical disk.

6. A planetary gear reducer according to claim 5, characterized in that, The first chuck has chuck platforms arranged in a circular array, and the chuck platforms engage with the transmission disk.

7. A planetary gear reducer according to claim 5, characterized in that, The conical disk has protrusions arranged in a circumferential array, and the protrusions engage with the second chuck.

8. A planetary gear reducer according to claim 2, characterized in that, The number of the first planetary gears and the second planetary gears are the same.

9. A planetary gear reducer according to claim 2, characterized in that, A first support rod is rotatably mounted on the first planetary carrier, and the first support rod engages with the first planetary gear; A second support rod is rotatably mounted on the second planetary carrier, and the second support rod engages with the second planetary gear.

10. A planetary gear reducer according to claim 1, characterized in that, The housing is provided with a top cover, and a square block is provided between the top cover and the housing. The square block is engaged with the internal gear.

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