Elastic buffering planet carrier and speed reducer

Abstract

The invention relates to the field of speed reducers, in particular to an elastic buffering planet carrier which comprises a fixed support and a surrounding type elastic buffering device, the fixed support is stably installed in the surrounding type elastic buffering device, at least one center shaft hole is formed in the fixed support, and the center shaft hole is used for guiding an output shaft to axially penetrate through; a plurality of planet shaft holes are evenly distributed in the surrounding type elastic buffering device and used for allowing gear shafts to penetrate through. The surrounding type elastic buffering device can generate effective elastic deformation in the transverse direction, the longitudinal direction and any oblique direction. The overall transmission precision and meshing precision are improved.

Description

Technical Field

[0001] The present application relates to the field of reducers, and in particular to an elastic buffer planetary carrier and a reducer. Background Art

[0002] In the field of mechanical transmission, reducers play a vital role as key components to reduce input speed and provide appropriate output speed. They are widely used in industrial production, automation equipment, transportation and many precision transmission fields, such as chip manufacturing, medical equipment, military equipment and diamond polishing.

[0003] However, in the design of planetary reducers in the prior art, although the rigid connection structure can ensure the stable fit between the gears, due to the existence of gear processing errors and assembly errors, the planetary gears often experience uneven force during actual operation, which is the so-called "eccentric load" problem. Eccentric load not only reduces the working efficiency of the reducer, but may also cause gear overload and fracture, seriously affecting the reliability and service life of the equipment, while increasing maintenance costs.

[0004] Especially in the field of precision transmission, such as chip manufacturing, medical equipment and military equipment, the accuracy (small backlash), stability and reliability of the reducer are extremely high. In these fields, a small error may lead to the performance degradation or even failure of the entire system. Summary of the invention

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide an elastic buffer planetary carrier and a reducer.

[0006] The elastic buffer planetary carrier provided by the present application includes a fixed support and a surrounding elastic buffer device, wherein the fixed support is installed inside the surrounding elastic buffer device, and the fixed support is provided with at least one central shaft hole, and the central shaft hole is used to guide the output shaft to pass axially; the surrounding elastic buffer device is evenly distributed with a plurality of planetary shaft holes, and the planetary shaft holes are used for the gear shaft to pass through; the surrounding elastic buffer device can be elastically deformed in the horizontal, longitudinal and any oblique direction. The elastic buffer planetary carrier according to the above technical solution can effectively absorb and alleviate the assembly and operation errors between gears, thereby ensuring the gapless transmission between two adjacent gears, thereby avoiding the eccentric load phenomenon caused by gear processing errors and assembly errors in traditional planetary reducers, and improving the reliability and service life of the reducer. The elastic buffer planetary carrier is adopted to achieve stable meshing between multiple gears and ensure that there is no gap between adjacent gears, thereby achieving the purpose of gapless transmission, reducing the transmission backlash, and effectively improving the reliability and service life of the reducer. Compared with the rigid planetary carrier, the elastic buffer planetary carrier shows greater flexibility in processing requirements, which not only improves the overall processing efficiency, but also reduces the demand for precision processing of the planetary carrier, thereby reducing the overall processing cost of the planetary carrier. The elastic buffer planetary carrier not only reduces the requirements for parts accuracy and assembly accuracy, but also improves the overall transmission accuracy and meshing accuracy. Optionally, the surround-type elastic buffer device includes a plurality of elastic buffer units, and two adjacent elastic buffer units are fixedly connected by a connecting bridge; the fixed support is fixedly connected to a plurality of connecting bridges at the same time; each elastic buffer unit has elastic deformation ability in the transverse, longitudinal and any oblique direction. The surround-type elastic buffer device according to the above technical solution is composed of a plurality of elastic buffer units, and two adjacent elastic buffer units are fixedly connected by a connecting bridge, and the fixed support is fixedly connected to a plurality of connecting bridges, so that each elastic buffer unit can show good elastic deformation ability in the transverse, longitudinal and any oblique direction, thereby more effectively absorbing and alleviating the assembly and operation errors between gears. Optionally, each of the elastic buffer units includes a movable support member and two elastic connecting arms, the movable support member is located between the two elastic connecting arms, and one end of each elastic connecting arm is fixedly connected to the connecting bridge, and the other end of the elastic connecting arm is tightly fixed to one end of the movable support member; the elastic connecting arm can be flexibly bent in the horizontal, longitudinal and any oblique direction, and the planetary shaft hole is opened on the movable support member.According to the above technical solution, each elastic buffer unit includes a movable support and two elastic connecting arms. The movable support is located between the two elastic connecting arms. One end of each elastic connecting arm is fixedly connected to the connecting bridge, and the other end of the elastic connecting arm is tightly fixed to one end of the movable support. The elastic connecting arm can be flexibly bent in the horizontal, longitudinal and any oblique direction. The planetary shaft hole is directly opened on the movable support, thereby ensuring gapless transmission between two adjacent gears, so that the elastic buffer unit can effectively absorb and alleviate the assembly and operation errors between gears, thereby improving the stability and reliability of the planetary gear transmission.

[0007] Optionally, the elastic connecting arm is an arc-shaped structure, a U-shaped structure, an S-shaped structure, a V-shaped structure, or a C-shaped structure.

[0008] In the above technical solution, the arc-shaped structure, U-shaped structure, S-shaped structure, V-shaped structure or C-shaped structure has good elasticity and toughness, and can adapt to changes in force and displacement in different directions, thereby more effectively alleviating the off-center load problem caused by gear processing errors and assembly errors.

[0009] Optionally, the elastic connecting arm includes a first bending segment, a second bending segment and a third bending segment, one end of the first bending segment is connected to the connecting bridge, the other end of the first bending segment is connected to one end of the second bending segment, the other end of the second bending segment is connected to one end of the third bending segment, and the other end of the third bending segment is connected to the movable support; this design ensures the flexible bending ability of the elastic connecting arm in multiple directions. The design of the elastic connecting arm refined into the first bending segment, the second bending segment and the third bending segment according to the above technical solution ensures the flexible bending ability of the elastic connecting arm in the horizontal, longitudinal and any oblique direction, thereby improving the ability of the elastic buffer planetary carrier to absorb and alleviate the assembly and operation errors between gears. Optionally, at least one of the first bending segment, the second bending segment and the third bending segment is an arc-shaped structure, a U-shaped structure, an S-shaped structure, a V-shaped structure or a C-shaped structure. In the above technical solution, when the first curved section, the second curved section and the third curved section of the elastic connecting arm are designed as an arc structure, a U-shaped structure or an S-shaped structure, the elastic deformation potential in the lateral, longitudinal and any oblique direction can be maximized, thereby ensuring gapless transmission between two adjacent gears, effectively absorbing and alleviating assembly and operation errors between gears, and ensuring stable operation of the planetary gear system. Optionally, the fixed support includes a fixed block and a plurality of connecting blocks, and the central axis hole is opened on the fixed block; the plurality of connecting blocks are distributed along the circumference of the fixed block, one end of each connecting block is fixedly connected to the fixed block, and the other end of each connecting block is fixedly connected to the connecting bridge. The fixed support according to the above technical solution is composed of a fixed block and a plurality of connecting blocks, the central axis hole is opened in the fixed block, the connecting blocks are distributed along the circumference of the fixed block and are connected to the fixed block and the connecting bridge, so that the fixed support and the surrounding elastic buffer device form a stable structure, which improves the structural stability and overall reliability of the elastic buffer planetary carrier. Optionally, the fixed block, the two adjacent connecting blocks and the elastic buffer unit together form a space region that allows the elastic buffer unit to undergo elastic deformation. According to the above technical solution, the fixed block, the two adjacent connecting blocks and the elastic buffer unit together form a space region that allows the elastic buffer unit to undergo elastic deformation, thereby ensuring that the elastic buffer unit can effectively absorb and alleviate the assembly and operation errors between gears, and improve the stability and shock absorption effect of the entire planetary carrier structure. A reducer includes a housing, at least one of the above-mentioned elastic buffer planetary carriers and at least one planetary gear device; an annular internal gear is provided inside the housing; the elastic buffer planetary carrier is provided inside the housing and fixedly connected to other components of the reducer; the planetary gear device is fixedly connected or rotationally connected to the power input component of the reducer, and the planetary gear device and the annular internal gear are linked to each other.By adopting the above technical solution, the elastic buffer planetary carrier can effectively absorb and alleviate the eccentric load caused by gear processing errors, assembly errors and small vibrations during operation; this buffering effect enables the planetary gear to maintain a more stable meshing state during the transmission process, thereby ensuring gapless transmission between two adjacent gears, thereby improving the stability and reliability of the transmission, reducing the wear rate of the gears, and thus extending the service life of the gears. The interconnected design of the planetary gear device and the annular internal gear makes the transmission path more optimized and the energy transmission more efficient. Optionally, an elastic groove is provided between the annular internal gear and the shell, and each of the elastic grooves is opened at both ends along the axis of the shell to ensure that the annular internal gear can undergo elastic deformation during operation. According to the above technical solution, an elastic groove is provided between the annular internal gear and the shell, and each of the elastic grooves is opened at both ends along the axis of the shell to ensure that the annular internal gear can undergo elastic deformation during operation, thereby further absorbing and alleviating the assembly and operation errors between the gears, and improving the stability and reliability of the reducer operation.

[0010] In summary, the present application includes at least one of the following beneficial technical effects: 1. The wraparound elastic buffer device according to the present application can effectively deform elastically in the horizontal, longitudinal and any oblique directions, thereby ensuring gapless transmission between two adjacent gears, thereby absorbing and alleviating assembly and operation errors between gears, and solving the problem of eccentric load caused by gear processing errors and assembly errors; 2. The flexible bending ability of the elastic connecting arm in the elastic buffer unit in the horizontal, longitudinal and any oblique direction enables the planetary gear to be evenly stressed during operation, avoiding the occurrence of overload and fracture of a single gear; 3. The design of the elastic buffer planetary carrier makes the overall structure of the reducer more compact, reduces the volume and weight, and improves the service life and working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the elastic buffer planetary carrier in Example 1 of the present application.

[0012] Figure 2 It is a schematic diagram of the structure of the elastic buffer planetary carrier in Example 2 of the present application.

[0013] Figure 3 It is a structural schematic diagram of the reducer in Example 3 of the present application.

[0014] Figure 4 It is a schematic diagram of the assembly relationship of the reducer in Example 3 of the present application.

[0015] Figure 5It is a structural schematic diagram of the installation tube from another perspective in Example 3 of the present application.

[0016] Figure 6 It is a schematic diagram of the assembly relationship of another reducer in Example 3 of the present application.

[0017] Figure 7 It is a structural schematic diagram of another reducer in Example 3 of the present application.

[0018] Figure 8 It is a schematic diagram of the assembly relationship of the installation tube in Example 4 of the present application.

[0019] Fig. 9 It is a schematic diagram of the structure of the elastic groove in Example 5 of the present application.

[0020] Fig.10 It is a structural schematic diagram of the elastic groove in Example 6 of the present application.

[0021] Description of reference numerals: 1. Fixed support; 11. Fixed block; 12. Connecting block; 13. Spatial area; 14. Central axis hole; 2. Surrounding elastic buffer device; 21. Elastic buffer unit; 211. Movable support; 2111. Planetary shaft hole; 212. Elastic connecting arm; 2121. First bending section; 2122. Second bending section; 2123. Third bending section; 22. Connecting bridge; 3. Housing; 31. Mounting cylinder; 311. Annular cylinder unit; 32. Bottom plate cover; 33. Hole; 34. Through hole; 4. Output shaft ; 41. fixed sleeve; 42. ball bearing; 43. corrugated gasket; 5. annular internal gear; 6. planetary gear device; 61. first sun gear; 62. first planetary gear; 63. first gear shaft; 65. second sun gear; 66. second planetary gear; 67. second gear shaft; 64. connecting shaft; 7. sun gear gasket; 8. bottom plate gasket; 9. elastic groove; 91. first arc segment; 92. second arc segment; 93. inclined segment; 94. connecting portion; 95. fourth arc segment; 96. fifth arc segment. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-10 This application is described in further detail.

[0023] The terms used in this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be the usual meanings understood by those skilled in the art to which this application belongs. The "first", "second" and similar words used in this application do not represent any order, quantity or importance, but are only used to distinguish different components.

[0024] Example 1 The elastic buffer planet carrier provided in this embodiment is suitable for planetary reducers, harmonic reducers or other similar reduction structures. Figure 1 The elastic buffer planetary carrier includes a fixed support 1 and a surrounding elastic buffer device 2, the fixed support 1 is installed in the inner center area of ​​the surrounding elastic buffer device 2, and at least one center shaft hole 14 is provided on the fixed support 1. The number of the center shaft hole 14 is one, and the center shaft hole 14 is located at the center position of the fixed support 1. The center shaft hole 14 is used to guide the output shaft 4 of the reducer to pass through. There are three planetary shaft holes 2111 evenly distributed on the surrounding elastic buffer device 2, and the planetary shaft holes 2111 are used for the gear shaft to pass through. The surrounding elastic buffer device 2 can undergo effective elastic deformation in the lateral, longitudinal and any oblique direction to absorb and alleviate the assembly and operation errors between the gears, thereby ensuring gap-free transmission between two adjacent gears.

[0025] Specifically, the fixed support 1 includes a fixed block 11 and a plurality of connecting blocks 12. The number of the connecting blocks 12 is three, and the three connecting blocks 12 are evenly distributed along the circumference of the fixed block 11. One end of each connecting block 12 is integrally formed with the fixed block 11, and the other end of each connecting block 12 is integrally formed with the connecting bridge 22. The fixed block 11 can be made of high-strength steel, which has good mechanical properties and wear resistance. The width of the connecting block 12 can be adjusted according to actual needs to enhance the stability of the overall structure.

[0026] The wraparound elastic buffer device 2 includes a plurality of elastic buffer units 21, and the number of the elastic buffer units 21 is three here. Two adjacent elastic buffer units 21 are fixedly connected by a connecting bridge 22. Each elastic buffer unit 21 can exhibit good elastic deformation ability in the transverse, longitudinal and any oblique direction. Each elastic buffer unit 21 includes a movable support 211 and two elastic connecting arms 212, and the movable support 211 is located between the two elastic connecting arms 212. One end of each elastic connecting arm 212 is integrally formed with the connecting bridge 22, and the other end thereof is integrally formed with one end of the movable support 211. The elastic connecting arm 212 can be flexibly bent in the transverse, longitudinal and any oblique direction, and the planetary shaft hole 2111 is directly opened at the center of the movable support 211.

[0027] The elastic connecting arm 212 is arc-shaped, U-shaped, S-shaped, V-shaped or C-shaped. The arc-shaped structure, U-shaped structure, S-shaped structure, V-shaped structure or C-shaped structure has good elasticity and toughness, and can adapt to the force and displacement changes in different directions, thereby more effectively alleviating the eccentric load problem caused by gear processing errors and assembly errors.

[0028] The implementation principle of this embodiment is: since the elastic buffer planetary carrier includes a fixed support 1 and a surrounding elastic buffer device 2, the elastic connecting arm 212 with an arc or similar structure in the elastic buffer unit 21 can ensure gap-free transmission between two adjacent gears, and flexibly bend in multiple directions to absorb and alleviate assembly and operation errors between gears, thereby improving the overall performance and service life of the planetary reducer.

[0029] Example 2 Reference Figure 2 , the difference between this embodiment and embodiment 1 is that: the elastic connecting arm 212 is further refined into a first curved segment 2121, a second curved segment 2122 and a third curved segment 2123, one end of the first curved segment 2121 is integrally formed with the connecting bridge 22, the other end of the first curved segment 2121 is integrally formed with one end of the second curved segment 2122, the other end of the second curved segment 2122 is integrally formed with one end of the third curved segment 2123, and finally the other end of the third curved segment 2123 is integrally formed with the movable support 211. This ensures the flexible bending ability of the elastic connecting arm 212 in multiple directions. The first curved segment 2121, the second curved segment 2122 and the third curved segment 2123 are preferably arc-shaped structures. The arc-shaped structure or C-shaped structure can be specifically in the form of a superior arc or an inferior arc to adapt to the deformation requirements under different conditions.

[0030] At least one of the first curved section 2121, the second curved section 2122 and the third curved section 2123 is an arc-shaped structure, a U-shaped structure, an S-shaped structure, a V-shaped structure or a C-shaped structure. When the first curved section 2121, the second curved section 2122 and the third curved section 2123 of the elastic connecting arm 212 are all designed to be an arc-shaped structure, a U-shaped structure or an S-shaped structure, the elastic deformation potential in the horizontal, longitudinal and any oblique direction can be maximized, thereby ensuring gapless transmission between two adjacent gears, effectively absorbing and alleviating assembly and operation errors between gears, and ensuring stable operation of the planetary gear system.

[0031] The fixing block 11, two adjacent connecting blocks 12 and the elastic buffer unit 21 together form a space region 13 that allows the elastic buffer unit 21 to undergo elastic deformation, ensuring that the elastic buffer unit 21 will not be interfered with during deformation in multiple directions, and giving full play to its elastic buffer effect. The number of elastic buffer units 21 can be set to six or more.

[0032] The implementation principle of this embodiment is: by dividing the elastic connecting arm 212 into a first curved section 2121, a second curved section 2122 and a third curved section 2123, which are preferably arc-shaped or other elastic structures, the flexible bending ability of the elastic connecting arm 212 in multiple directions is enhanced to better absorb and alleviate the assembly and operation errors between gears. The space area formed by the fixed block 11, the connecting block 12 and the elastic buffer unit 21 ensures the multi-directional deformation freedom of the elastic buffer unit 21.

[0033] Example 3 This embodiment provides a reducer, referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 The reducer includes a housing 3, an output shaft 4, an annular internal gear 5, at least one elastic buffer planetary carrier as described in Example 1 or Example 2, and at least one planetary gear device 6, and the number of the elastic buffer planetary carrier and the planetary gear device 6 corresponds to each other. Specifically, the housing 3 includes a mounting cylinder 31 and a bottom plate cover 32, the mounting cylinder 31 is an integrated structure, and the bottom plate cover 32 is detachably connected to one end of the mounting cylinder 31. The bottom plate cover 32 is threadedly matched with the mounting cylinder 31, which increases the convenience of the staff to install and remove the bottom plate cover 32.

[0034] The elastic buffer planet carrier is arranged inside the mounting cylinder 31, and the elastic buffer planet carrier is fixedly connected to the housing 3 or other parts of the reducer. A hole 33 is provided at one end of the mounting cylinder 31 away from the bottom plate cover 32, and a ball bearing 42 is arranged in the hole 33. The output shaft 4 passes through the hole 33 and is rotatably connected to the mounting cylinder 31 through the ball bearing 42. A fixing sleeve 41 is also fixed on the outer periphery of the output shaft 4, and the end of the fixing sleeve 41 abuts against the end of the ball bearing 42, so as to prevent the ball bearing 42 from moving along the axial direction of the output shaft 4, thereby increasing the firmness of the installation of the ball bearing 42. The number of the fixing sleeve 41 and the ball bearing 42 can be one, two or three.

[0035] The output shaft 4 is also sleeved with a corrugated gasket 43, which is located between two adjacent ball bearings 42. The corrugated gasket 43 sleeved on the output shaft 4 plays a vital role between two adjacent ball bearings 42, and significantly improves the overall performance and reliability of the transmission system by providing axial positioning, pre-tightening, load distribution, and improving sealing performance.

[0036] The number of the elastic buffer planet carriers and the number of the planetary gear devices 6 are both two, and the two elastic buffer planet carriers and the two planetary gear devices 6 are both arranged inside the mounting tube 31 .

[0037] Each elastic buffer planet carrier includes a fixed support 1 and a surrounding elastic buffer device 2. The fixed support 1 is installed in the inner center area of ​​the surrounding elastic buffer device 2. The specific structures of the fixed support 1 and the surrounding elastic buffer device 2 are the same as those in Example 1 and are not described in detail here. A central shaft hole 14 is provided on the fixed support 1, and one end of the output shaft 4 located inside the mounting cylinder 31 passes through the central shaft hole 14. The fixed support 1 is sleeved on the output shaft 4 and fixedly connected to the output shaft 4, thereby fixing one of the elastic buffer planet carriers to the end of the output shaft 4.

[0038] One of the planetary gear devices 6 is arranged on the above-mentioned elastic buffer planetary frame, which includes a first sun gear 61, three first planetary gears 62 and three first gear shafts 63. Since the three movable supports 211 of the surrounding elastic buffer device 2 are all provided with planetary shaft holes 2111, the first gear shafts 63 correspond to the planetary shaft holes 2111 and the first planetary gears 62 one by one. One end of each first gear shaft 63 passes through the planetary shaft hole 2111 and is fixedly connected to the elastic buffer planetary frame. Each first planetary gear 62 is sleeved on the other end of the corresponding first gear shaft 63 and is fixedly connected to the first gear shaft 63. The first sun gear 61 is rotatably arranged between the three first planetary gears 62 and meshes with the three first planetary gears 62 to achieve rotational motion. The three first planetary gears 62 are all meshed with the annular internal gear 5 to form one of the planetary gear transmission systems.

[0039] A connecting shaft 64 is fixedly provided at the end of the first sun gear 61, and another elastic buffer planetary frame is sleeved on the connecting shaft 64 and fixedly connected to the connecting shaft 64. An annular sun gear gasket 7 is also sleeved on the connecting shaft 64, and the sun gear gasket 7 is located between the first sun gear 61 and the elastic buffer planetary frame. Another planetary gear device 6 includes a second sun gear 65, three second planetary gears 66 and three second gear shafts 67. Since the three movable supports 211 of the surrounding elastic buffer device 2 are all provided with planetary shaft holes 2111, the second gear shafts 67 correspond to the planetary shaft holes 2111 on the elastic buffer planetary frame and the second planetary gears 66 one by one. One end of each second gear shaft 67 passes through the planetary shaft hole 2111 and is fixedly connected to the elastic buffer planetary frame. Each second planetary gear 66 is sleeved on the other end of the second gear shaft 67 and is fixedly connected to the second gear shaft 67. The second sun gear 65 is rotatably arranged between the three second planetary gears 66 and meshes with the three second planetary gears 66 to achieve rotational motion. The three second planetary gears 66 and the ring internal gear 5 mesh with each other to form a planetary gear transmission system.

[0040] Reference Figure 4An annular bottom plate gasket 8 is arranged between the planetary gear device 6 and the bottom plate cover 32. A through hole 34 for the shaft of the power supply machine to pass through is provided in the center of the bottom plate cover 32. One of the planetary gear devices 6 is driven by the motor to run, thereby driving the other planetary gear device 6 to run, and finally driving the output shaft 4 of the reducer to rotate.

[0041] The two planetary gear devices 6 can be independently configured with different reduction ratios to achieve a multi-stage reduction function, thereby achieving a multi-stage reduction function, and effectively improving the flexibility and application range of the reducer.

[0042] Since the planet carrier and the inner ring gear both have elastic buffering functions, the planetary reducer can alleviate the impact of the errors in the manufacturing and assembly of the reducer parts on the overall operating performance, such as stability, noise, efficiency and life. And if a reasonable amount of interference is added between the sun gear, planetary gear and inner ring gear, the planetary reducer can achieve zero backlash transmission (zero backlash transmission) to achieve the effect of precise transmission, and also solve the current situation in the planetary reducer industry that the smaller the backlash, the higher the precision of the parts and the higher the cost.

[0043] Of course, the elastic buffer planetary carrier is also suitable for the elastic buffer structure of the rigid wheel of the harmonic reducer. The harmonic reducer of the same size can achieve smaller backlash, smoother and more accurate transmission. When the appropriate interference is pre-added between the flexible wheel and the rigid wheel, zero backlash can also be achieved. Of course, the elastic buffer planetary carrier also has the same effect when applied to other reduction structures.

[0044] The implementation principle of this embodiment is: by integrating the elastic buffer planetary carrier and the planetary gear device into the reducer, the elastic buffer planetary carrier can effectively absorb and alleviate the assembly and operation errors between the gears, thereby ensuring gap-free transmission between two adjacent gears, thereby avoiding the unbalanced load phenomenon caused by gear processing errors and assembly errors in traditional planetary reducers, and improving the reliability and service life of the reducer.

[0045] Example 4 Reference Figure 6 and Figure 7 , the difference between this embodiment and embodiment 2 is that the mounting cylinder 31 includes a plurality of annular cylinder units 311, which are sequentially spliced ​​and fastened along the axial direction of the reducer to form a complete reducer housing 3. At the same time, the annular internal gear 5 is also correspondingly divided into a plurality of independent parts corresponding to the cylinder units of the housing 3, and each part of the annular internal gear 5 is confined inside the corresponding cylinder unit. This design not only simplifies the assembly process of the reducer and improves maintainability, but also allows each part of the annular internal gear 5 to be relatively independently elastically deformed when subjected to load or vibration, thereby enhancing the overall stability and durability of the reducer.

[0046] Example 5 Reference Fig. 9 The difference between this embodiment and the embodiment 3 is that an elastic groove 9 is provided between each annular internal gear 5 and the housing 3, and each elastic groove 9 is open at both ends along the axis of the housing 3 to ensure that the annular internal gear 5 can be elastically deformed during operation. There are multiple elastic grooves 9, and the multiple elastic grooves 9 are centrally symmetrical along the circumferential direction. The elastic groove 9 includes a first arc segment 91, a second arc segment 92, and an inclined segment 93. The diameter of the first arc segment 91 is greater than the diameter of the second arc segment 92, and the length of the first arc segment 91 is also greater than the length of the second arc segment 92. One end of the inclined segment 93 is interconnected with the end of the first arc segment 91, and the other end of the inclined segment 93 is interconnected with the end of the second arc segment 92. A connecting portion 94 is formed between the adjacent first arc segment 91 and the second arc segment 92, and one end of the connecting portion 94 is fixedly connected to the outer side wall of the annular internal gear 5, and the other end of the connecting portion 94 is fixedly connected to the inner side wall of the housing.

[0047] The implementation principle of this embodiment is: the elastic groove 9 allows the annular internal gear 5 to undergo elastic deformation during operation, thereby further improving the stability and durability of the reducer. The circumferential center symmetric layout of the elastic groove 9 ensures the uniformity of the deformation, and the connecting portion 94 ensures a stable connection between the annular internal gear 5 and the housing 3.

[0048] Example 6 The difference between this embodiment and the embodiment 5 is that the elastic groove 9 of the embodiment of the present application includes a plurality of fourth arc segments 95 and a plurality of fifth arc segments 96, and the fifth arc segment 96 may have the same or different curvature radius as the fourth arc segment 95. When the fifth arc segment 96 has the same radius as the fourth arc segment 95, the two are arranged alternately along the circumferential direction. When the radius of the fifth arc segment 96 is greater than the radius of the fourth arc segment 95, the plurality of fourth arc segments 95 and the plurality of fifth arc segments 96 are uniformly arranged along the circumferential direction to enhance the overall elastic performance of the elastic groove 9.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An elastic buffer planet carrier, characterized in that: The invention comprises a fixed support (1) and a surrounding elastic buffer device (2), wherein the fixed support (1) is stably mounted inside the surrounding elastic buffer device (2), and the fixed support (1) is provided with at least one central shaft hole (14), and the central shaft hole (14) is used to guide the output shaft (4) to pass axially; the surrounding elastic buffer device (2) is evenly distributed with a plurality of planetary shaft holes (2111), and the planetary shaft holes (2111) are used to allow the gear shaft to pass through; and the surrounding elastic buffer device (2) can undergo elastic deformation in the transverse direction, the longitudinal direction and any oblique direction.

2. The elastic buffer planet carrier according to claim 1, characterized in that: The surrounding elastic buffer device (2) comprises a plurality of elastic buffer units (21), and two adjacent elastic buffer units (21) are fixedly connected via a connecting bridge (22); the fixed support (1) is fixedly connected to the plurality of connecting bridges (22) at the same time; and each elastic buffer unit (21) has elastic deformation capability in the transverse, longitudinal and any oblique direction.

3. The elastic buffer planet carrier according to claim 2, characterized in that: Each of the elastic buffer units (21) comprises a movable support member (211) and two elastic connecting arms (212); the movable support member (211) is located between the two elastic connecting arms (212); the first end of each elastic connecting arm (212) is fixedly connected to the connecting bridge (22); the second end of the elastic connecting arm (212) is tightly fixed to one end of the movable support member (211); the elastic connecting arm (212) can be flexibly bent in the transverse, longitudinal and any oblique direction; the planetary shaft hole (2111) is opened on the movable support member (211).

4. The elastic buffer planet carrier according to claim 3, characterized in that: The elastic connecting arm (212) is an arc-shaped structure, a U-shaped structure, an S-shaped structure, a V-shaped structure, or a C-shaped structure.

5. The elastic buffer planet carrier according to claim 3, characterized in that: The elastic connecting arm (212) comprises a first curved segment (2121), a second curved segment (2122) and a third curved segment (2123), wherein the first end of the first curved segment (2121) is connected to the connecting bridge (22), the second end of the first curved segment (2121) is connected to the first end of the second curved segment (2122), the second end of the second curved segment (2122) is connected to the first end of the third curved segment (2123), and the second end of the third curved segment (2123) is connected to the movable support member (211).

6. The elastic buffer planet carrier according to claim 5, characterized in that: At least one of the first curved section (2121), the second curved section (2122) and the third curved section (2123) is an arc-shaped structure, a U-shaped structure, an S-shaped structure, a V-shaped structure or a C-shaped structure.

7. The elastic buffer planet carrier according to claim 3, characterized in that: The fixed support (1) comprises a fixed block (11) and a plurality of connecting blocks (12); the central axis hole (14) is opened on the fixed block (11); the plurality of connecting blocks (12) are distributed along the circumference of the fixed block (11); the first end of each connecting block (12) is fixedly connected to the fixed block (11), and the second end of each connecting block (12) is fixedly connected to the connecting bridge (22).

8. The elastic buffer planet carrier according to claim 7, characterized in that: The fixing block (11), the two adjacent connecting blocks (12) and the elastic buffer unit (21) together form a space region (13) that allows the elastic buffer unit (21) to undergo elastic deformation.

9. A reducer, characterized in that: It comprises a shell, at least one elastic buffer planetary carrier as described in any one of claims 1 to 8, and at least one planetary gear device; an annular internal gear is arranged inside the shell; the elastic buffer planetary carrier is arranged inside the shell, and the elastic buffer planetary carrier is fixedly connected to other components of the reducer; the planetary gear device is fixedly connected or rotationally connected to the power input component of the reducer, and the planetary gear device and the annular internal gear are linked to each other.

10. The reducer according to claim 9, characterized in that: An elastic groove (9) is provided between the annular internal gear (5) and the outer shell (3), and each of the elastic grooves (9) is open at both ends along the axis of the outer shell (3) to ensure that the annular internal gear (5) can undergo elastic deformation during operation.

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