CN117780873B - High stable planetary reducer - Google Patents
High stable planetary reducer Download PDFInfo
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- CN117780873B CN117780873B CN202410216883.3A CN202410216883A CN117780873B CN 117780873 B CN117780873 B CN 117780873B CN 202410216883 A CN202410216883 A CN 202410216883A CN 117780873 B CN117780873 B CN 117780873B
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 28
- 230000033001 locomotion Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 18
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The application relates to the technical field of planetary speed reducers, in particular to a high-stability planetary speed reducer; a sun gear including a housing and an inner center of the housing; the front end face of the sun gear is rotationally connected with a front rotary table, and the rear end face of the sun gear is fixedly connected with an input shaft; one end of the output shaft is fixedly connected with the center of the front turntable; the sun gear is meshed with the inner ring gear through a planetary gear in the shell for transmission; the inner wall of the shell is positioned at the rear side of the sun gear and is rotationally connected with the rear turntable; the center of the planetary gear is rotationally connected with a rotating shaft; wherein, the end part of one part of the rotating shaft is fixedly connected with the front hole on the corresponding front rotating disc and the rear hole on the rear rotating disc; the end part of the other part of the rotating shaft is movably connected with a front hole on the corresponding front rotating disc and a rear hole on the rear rotating disc; the planetary reducer can adjust the meshing quantity of the planetary gears under different use conditions and use environments, so that the planetary reducer is more stable to use under different environments.
Description
Technical Field
The invention relates to the technical field of planetary speed reducers, in particular to a high-stability planetary speed reducer.
Background
The planetary speed reducer is a mechanical device for converting high-speed rotation of an input shaft into low-speed high-torque rotation of an output shaft, and consists of a sun gear, a planetary gear and an inner ring gear, wherein the input shaft is connected with the sun gear through a transmission device, the output shaft is connected with the planetary gear, when the input shaft rotates, the sun gear drives the planetary gear to rotate, the planetary gear is meshed with the inner ring gear, and a speed reduction effect is realized through rolling and rotation of the planetary gear.
The number of planetary gears in a planetary reducer can affect performance in terms of reduction ratio, torque transfer capability, reliability, accuracy, and the like. A smaller number of planetary gears has higher transmission efficiency and higher reliability, while a larger number of planetary gears has higher transmission torque capacity and higher transmission accuracy; the number of the internal planetary gears of the planetary reducer is constant corresponding to some planetary reducers with changeable use conditions, so that the stable operation of the planetary reducer is affected.
In view of the above, the present invention provides a highly stable planetary reducer to overcome the above technical problems.
Disclosure of Invention
In order to make up the defects of the prior art, the application provides a high-stability planetary reducer, and the planetary reducer can adjust the meshing number of planetary gears under different use conditions and use environments, so that the planetary reducer is more stable to use under different environments.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a high-stability planetary reducer, which comprises a shell and a sun gear in the center of the shell; the front end face of the sun gear is rotationally connected with a front rotary table, and the rear end face of the sun gear is fixedly connected with an input shaft; the input shaft extends to the rear end of the shell and is in rotary sealing connection with the shell; the front end of the shell is rotationally and hermetically connected with an output shaft; one end of the output shaft is fixedly connected with the center of the front turntable; the sun gear is meshed with the inner ring gear through a planetary gear in the shell for transmission; the input shaft is rotationally connected with the shell through a first bearing, and the output shaft is rotationally connected with the shell through a second bearing; the outer wall of the inner ring gear is embedded into and fixedly connected with the inner wall of the shell;
The inner wall of the shell is positioned at the rear side of the sun gear and is rotationally connected with the rear turntable; the rear turntable is rotationally connected with the input shaft; the center of the planetary gear is rotationally connected with a rotating shaft; rear holes are formed in positions, corresponding to the rotating shafts, of the end faces of the rear turntables in number; front holes are formed in positions, corresponding to the rotating shafts, of the front turntable end faces in number; wherein, the end part of one part of the rotating shaft is fixedly connected with the front hole on the corresponding front rotating disc and the rear hole on the rear rotating disc; the end part of the other part of the rotating shaft is movably connected with a front hole on the corresponding front rotating disc and a rear hole on the rear rotating disc; a tooth withdrawing space is reserved between the rear turntable and the sun gear; the other part of the rotating shaft can drive part of the planetary gears to move to the tooth withdrawing space along the axial direction.
Preferably, the rotating shaft capable of generating relative movement with the rear turntable is called a movable rotating shaft, and the rotating shaft capable of keeping relative rest with the rear turntable is called a fixed rotating shaft; the number of the movable rotating shafts is equal to that of the fixed rotating shafts; the movable rotating shaft and the fixed rotating shaft are alternately and uniformly arranged around the sun gear; the movable rotating shaft can drive part of the planetary gears to be disengaged from the sun gear and reengaged.
Preferably, a driving cavity is arranged in the rear end of the shell; the driving cavity is connected with the driving plate in a sliding and sealing manner; the driving plate divides the driving cavity into a first driving cavity and a second driving cavity; the first driving cavity is communicated with the outer wall of the shell through a step hole; the step hole is internally and spirally connected with an inner hexagon bolt; the inner hexagon bolt is rotationally connected with the driving plate; a shaft withdrawing space is arranged between the rear side of the rear turntable and the rear side of the shell; the rotating ring is fixedly connected in the shaft withdrawing space; the swivel is fixedly connected with the movable rotating shaft; the central axis of the swivel is coincident with the central axis of the input shaft; the outer wall of the swivel is provided with an annular groove; an L-shaped groove is formed in the inner wall of the shaft withdrawing space; the L-shaped groove is connected with the L-shaped strip in a sliding and sealing manner; one end of the L-shaped strip extends to the shaft withdrawing space and is inserted into the annular groove; the L-shaped groove is communicated with the second driving cavity through an air hole; the second driving cavity is filled with a medium; the medium pressure in the second driving cavity can push the L-shaped strip to drive the swivel and the movable rotating shaft to move along the axial direction, so that the movable rotating shaft drives the corresponding planetary gear to be meshed with the sun gear again.
Preferably, a clamping block is arranged on one surface of the planetary gear on the movable rotating shaft, which is far away from the front turntable; a clamping groove is formed in the front side of the rear turntable and corresponds to the clamping block; the clamping grooves are distributed uniformly around the corresponding rear holes; the planetary gear on the movable rotating shaft stops rotating after the clamping block is clamped into the clamping groove.
Preferably, a groove is formed in one surface, away from the front turntable, of the planetary gear on the movable rotating shaft; the clamping block is connected in the groove in a sliding way; the bottom of the groove is connected with the clamping block through a first spring.
Preferably, the L-shaped groove is arranged close to the upper position of the inner wall of the shell; the opening of the L-shaped groove communicated with the inner wall of the shell faces downwards; impurities in the shaft withdrawing space are far away from the L-shaped groove under the action of gravity.
Preferably, the inner wall of the planetary gear, which is in contact with the movable rotating shaft, is provided with a movable groove; the movable groove is annular; the movable groove is movably connected with a movable ring; the movable ring is sleeved on the outer wall of the movable rotating shaft; the movable ring is fixedly connected with the outer wall of the movable rotating shaft; the thickness of the movable ring in the axial direction is smaller than the width of the movable groove in the axial direction; the planetary gears on the movable rotating shafts can enter the inner side of the inner ring gear successively according to the self-meshing condition.
Preferably, two second springs are arranged in the movable groove; the two second springs are positioned on two sides of the movable ring; the second spring is sleeved outside the corresponding movable rotating shaft.
Preferably, the movable rotating shaft consists of a male shaft and a female shaft; the male shaft and the female shaft are mutually spliced and can be mutually far away from or close to each other; one end of the female shaft, which is far away from the male shaft, is fixedly connected with the swivel; one end of the male shaft, which is far away from the female shaft, is fixedly connected with the inner side of the corresponding front hole; the male shafts form a support after the corresponding planetary gears are disengaged; the male shafts are guided in the process that the corresponding planetary gears enter the inner side of the inner ring gear.
The beneficial effects of the invention are as follows:
1. The planetary reducer can adjust the meshing quantity of the planetary gears under different use conditions and use environments, so that the planetary reducer is more stable to use under different environments.
2. According to the invention, in the process that the movable rotating shaft drives the connected planetary gear to be far away from the front rotating shaft in the driving process, the first spring can drive the clamping block to enter the clamping groove, so that the planetary gear connected with the movable rotating shaft is locked by the rear rotating shaft, the planetary gear connected with the movable rotating shaft forms a whole, the vibration of the planetary speed reducer is prevented from being influenced by the shaking of the planetary gear connected with the movable rotating shaft, and the running stability of the planetary speed reducer is further improved.
3. In the invention, the movable rotating shaft drives the connected planetary gears to enter the inner side of the inner ring gear, and the planetary gears connected with the movable rotating shaft enter the inner side of the inner ring gear more easily and stably under the guiding action under the cooperation of the female shaft and the male shaft, so as to complete the re-meshing process.
Drawings
The invention will be further described with reference to the drawings and embodiments.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a state diagram of an increased number of planetary gear meshes according to the present invention;
FIG. 3 is an enlarged view at A in FIG. 2
FIG. 4 is a state diagram of the present invention with a reduced number of planetary gear meshes;
FIG. 5 is a diagram of the position of the movable groove and the recess in the present invention;
FIG. 6 is an enlarged view at B in FIG. 5;
FIG. 7 is a diagram of the position of a card slot in the present invention;
fig. 8 is an enlarged view at C in fig. 7.
In the figure: the gear box comprises a shell 1, an output shaft 11, a second bearing 12, a driving cavity 13, a driving plate 14, a step hole 15, a gear withdrawing space 16, an inner hexagon bolt 17, an L-shaped groove 18, an air hole 181, an L-shaped strip 19, a sun gear 2, an input shaft 21, a first bearing 22, a front rotary table 3, a front hole 31, a planetary gear 4, a clamping block 41, a groove 42, a first spring 43, a movable groove 44, a movable ring 45, a second spring 46, an inner ring gear 5, a rear rotary table 6, a rear hole 61, a gear withdrawing space 62, a clamping groove 63, a rotary shaft 7, a male shaft 71, a female shaft 72, a rotary ring 8 and an annular groove 81.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 8, the present invention is described in detail in the following embodiments:
example 1: a highly stable planetary reducer, comprising a shell 1 and a sun gear 2 in the center of the shell 1; the front end face of the sun gear 2 is rotationally connected with the front rotary table 3, and the rear end face of the sun gear is fixedly connected with the input shaft 21; the input shaft 21 extends to the rear end of the housing 1 and is in rotary sealing connection with the housing 1; the front end of the shell 1 is rotationally and hermetically connected with an output shaft 11; one end of the output shaft 11 is fixedly connected with the center of the front turntable 3; the sun gear 2 is meshed with an inner ring gear 5 through a planetary gear 4 in the shell 1 for transmission; the input shaft 21 is rotatably connected with the housing 1 through a first bearing 22, and the output shaft 11 is rotatably connected with the housing 1 through a second bearing 12; the outer wall of the inner ring gear 5 is embedded into and fixedly connected with the inner wall of the shell 1;
The inner wall of the shell 1 is positioned at the rear side of the sun gear 2 and is rotationally connected with a rear turntable 6; the rear rotary table 6 is rotationally connected with the input shaft 21; the center of the planetary gear 4 is rotationally connected with a rotating shaft 7; the end face of the rear rotary table 6 is provided with rear holes 61 in the positions corresponding to the rotary shafts 7 in number; front holes 31 are formed in positions, corresponding to the rotating shafts 7, of the end faces of the front rotary table 3 in number; the end part of one part of the rotating shaft 7 is fixedly connected in the corresponding front hole 31 on the front rotary table 3 and the corresponding rear hole 61 on the rear rotary table 6; the end part of the other part of the rotating shaft 7 is movably connected in a front hole 31 on the corresponding front rotary table 3 and a rear hole 61 on the rear rotary table 6; a tooth withdrawing space 62 is reserved between the rear rotary table 6 and the sun gear 2; the other part of the rotating shaft 7 can drive the part of the planetary gears 4 to move to the tooth withdrawing space 62 along the axial direction.
In this embodiment, the rotating shaft 7 capable of moving relatively to the rear turntable 6 is referred to as a movable rotating shaft, and the rotating shaft 7 capable of keeping relatively stationary with the rear turntable 6 is referred to as a fixed rotating shaft; the number of the movable rotating shafts is equal to that of the fixed rotating shafts; the movable rotating shaft and the fixed rotating shaft are alternately and uniformly arranged around the sun gear 2; the movable shaft can drive part of the planetary gears 4 to disengage from the sun gear 2 and to reengage.
In this embodiment, a driving cavity 13 is disposed inside the rear end of the housing 1; the driving cavity 13 is connected with a driving plate 14 in a sliding and sealing manner; the drive plate 14 divides the drive chamber 13 into a first drive chamber and a second drive chamber; the first driving cavity is communicated with the outer wall of the shell 1 through a step hole 15; the step hole 15 is internally connected with an inner hexagon bolt 17 through threads; the inner hexagon bolt 17 is rotationally connected with the driving plate 14; a shaft withdrawing space 16 is arranged between the rear side of the rear turntable 6 and the rear side of the shell 1; the rotating ring 8 is fixedly connected in the shaft withdrawing space 16; the swivel 8 is fixedly connected with the movable rotating shaft; the central axis of the swivel 8 coincides with the central axis of the input shaft 21; the outer wall of the swivel 8 is provided with an annular groove 81; an L-shaped groove 18 is formed in the inner wall of the shaft withdrawing space 16; the L-shaped groove 18 is connected with an L-shaped strip 19 in a sliding sealing way; one end of the L-shaped strip 19 extends to the shaft withdrawing space 16 and is inserted into the annular groove 81; the L-shaped groove 18 is communicated with the second driving cavity through an air hole 181; the second driving cavity is filled with a medium; the medium pressure in the second driving cavity can push the L-shaped strip 19 to drive the swivel 8 and the movable rotating shaft to move along the axial direction, so that the movable rotating shaft drives the corresponding planetary gear 4 to be meshed with the sun gear 2 again;
When the planetary reducer works, the number of the planetary gears 4 in the planetary reducer can influence the performance in the aspects of reduction ratio, torque transmission capacity, reliability, precision and the like; a smaller number of planetary gears 4 has a higher transmission efficiency and higher reliability, while a larger number of planetary gears 4 has a higher transmission torque capacity and higher transmission accuracy; the number of the internal planetary gears 4 of the planetary speed reducer is constant corresponding to some planetary speed reducers with changeable use conditions, so that the stable operation of the planetary speed reducer is affected;
Therefore, the staff can change the number of the planetary gears 4 in the planetary speed reducer according to the use environment and the use condition of the planetary speed reducer; the number of meshes of the planetary gears 4 is reduced for the need for higher transmission efficiency and higher reliability, and the number of meshes of the planetary gears 4 is increased for the need for higher transmission torque capacity and higher transmission accuracy; the two cases are respectively described:
firstly, the meshing quantity of the planetary gears 4 in the planetary gear 4 speed reducer is reduced; the staff can insert one end of the socket head cap screw 17 in the step hole 15 to reversely screw the socket head cap screw 17, the socket head cap screw 17 can move towards the direction far away from the input shaft 21 in the step hole 15 in the reverse rotation process, the socket head cap screw 17 can drive the driving plate 14 to move in the driving cavity 13 in the movement process, the gas in the first driving cavity is pressed to be discharged along the step hole 15, the space in the second driving cavity is increased after the driving plate 14 moves, the space in the second driving cavity is increased to form negative pressure, so that the medium in the L-shaped groove 18 enters the second driving cavity along the air hole 181 under the action of the negative pressure, the medium in the L-shaped groove 18 is pumped away to form the negative pressure, the L-shaped strip 19 slides in the L-shaped groove 18 under the action of the negative pressure, the L-shaped strip 19 moves in the L-shaped groove 18 far away from the inner ring gear 5, one end of the L-shaped strip 19 is inserted into the annular groove 81 on the outer wall of the swivel 8, so that the swivel 8 can move along with the movement of the L-shaped strip 19, the swivel 8 can drive the movable rotating shaft to synchronously move in the process of being far away from the inner ring gear 5, the movable rotating shaft can generate relative movement with the front hole 31 and the rear hole 61, and the movable rotating shaft can drive the corresponding planetary gears 4 in rotary connection to synchronously move in the process of moving towards the rear side of the shell 1 along the axial direction, so that the corresponding planetary gears 4 move from the inner side of the inner ring gear 5 to the tooth withdrawing space 62, the planetary gears 4 connected with the movable rotating shaft are disengaged from the sun gear 2, and the meshing number of the planetary gears 4 in the planetary speed reducer is reduced;
Secondly, the meshing quantity of the planetary gears 4 in the planetary gear 4 speed reducer is increased; the staff can insert one end of the inner hexagon spanner into the head of the inner hexagon bolt 17 in the step hole 15, the inner hexagon bolt 17 is screwed forward, the inner hexagon bolt 17 moves towards the direction close to the input shaft 21 in the step hole 15 in the forward rotation process, the inner hexagon bolt 17 can drive the driving plate 14 to move in the driving cavity 13 in the movement process, external gas can enter the first driving cavity along the step hole 15 to realize gas supplementation, the space in the second driving cavity can be reduced after the driving plate 14 moves, media in the second driving cavity can enter the L-shaped groove 18 along the air hole 181 after being pressed, the pressure of the media in the L-shaped groove 18 is increased after being increased, the media is fluid, the media can push the L-shaped strip 19 to slide close to the inner ring gear 5 in the L-shaped groove 18, one end of the L-shaped strip 19 is inserted into the outer wall 81 of the rotating ring 8, the rotating ring 8 can move along with the movement of the L-shaped strip 19, the rotating ring 8 can drive the movable synchronous movement in the process close to the inner ring gear 5, the movable rotating shaft can move along with the front hole 31 and the inner ring gear 61, the inner ring gear 4 is meshed with the planet gears 4 in the opposite to the inner ring gear 4, the inner side of the planetary gear 4 is meshed with the planet gears 4 in the axial direction, and the inner side of the planetary gear 4 is meshed with the planetary gear 4 in the opposite to the inner side of the rotating shaft 2;
The application has another embodiment for the driving mode of the movable rotating shaft along the axial movement, namely a miniature electric push rod or a miniature cylinder and other telescopic components are arranged in the shaft withdrawing space 16, and the telescopic components are used for controlling the L-shaped strip 19 to be far away from or close to the inner ring gear 5 so as to realize the change of the meshing quantity of the planetary gears 4;
The working process comprises the following steps: the transmission device is connected with an input shaft 21 of the planetary reducer, the input shaft 21 drives a sun gear 2 to rotate in the rotating process, the sun gear 2 drives a meshed planetary gear 4 to rotate, the planetary gear 4 is meshed with the sun gear 2 on one hand, and is meshed with the inner side of an inner ring gear 5 on the other hand, so that the planetary gear 4 rotates around the sun gear 2 in the rotating process of the sun gear 2 and rotates, the rotating shaft 7 rotates around the sun gear 2 along with the planetary gear 4, the rotating shaft 7 drives a front rotating disc 3 and a rear rotating disc 6 to synchronously rotate around the sun gear 2, the rotating shaft 7 also drives a rotating ring 8 to rotate, an annular groove 81 on the rotating ring 8 and one end of an L-shaped strip 19 generate relative motion in the rotating process of the rotating ring 8, and an output shaft 11 is driven to rotate in the rotating process of the front rotating disc 3, so that a speed reducing effect is realized, and the planetary reducer of the application can be used more stably in different environments due to the fact that the meshing number of the planetary reducer 4 can be adjusted in different use conditions and use environments; in this embodiment, the axial length of the shaft withdrawing space 16 and the tooth withdrawing space 62 is not shorter than the axial length of the planetary gear 4, and the movable rotating shaft and the fixed rotating shaft are alternately arranged in this embodiment, so that the meshing transmission between the sun gear 2 and the planetary gear 4 on the fixed rotating shaft is more stable under the condition that the planetary gear 4 is increased or decreased.
Embodiment 2, this embodiment differs from embodiment 1 in that:
A clamping block 41 is arranged on one surface of the planetary gear 4 on the movable rotating shaft, which is far away from the front turntable 3; a clamping groove 63 is formed in the front side of the rear turntable 6 and corresponds to the clamping block 41; the clamping grooves 63 are distributed uniformly around the corresponding rear holes 61; the planetary gear 4 on the movable rotating shaft stops rotating after the clamping block 41 is clamped into the clamping groove 63.
In this embodiment, a groove 42 is provided on a side of the planet gear 4 on the movable rotating shaft away from the front turntable 3; the clamping block 41 is connected in the groove 42 in a sliding way; the bottom of the groove 42 is connected with the clamping block 41 through a first spring 43;
During operation, in the process that the movable rotating shaft drives the connected planetary gear 4 to be far away from the front rotating disc 3 in the driving process, the planetary gear 4 connected with the movable rotating shaft can drive the clamping block 41 to move close to the rear rotating disc 6, the planetary gear 4 connected with the movable rotating shaft can be contacted with the front side of the rear rotating disc 6, the clamping block 41 is pressed to overcome the defect that the first spring 43 enters into the groove 42, the rear rotating disc 6 can rotate along with the rotation of the fixed rotating shaft, the movable rotating shaft and the planetary gear 4 can be driven to synchronously rotate in the rotating process of the rear rotating disc 6, the planetary gear 4 connected with the movable rotating shaft can shake in the rotating process, the planetary gear 4 can drive the groove 42 to correspond to the clamping groove 63 in the rotating process, the first spring 43 can drive the clamping block 41 to enter into the clamping groove 63, the planetary gear 4 connected with the movable rotating shaft is locked, the planetary gear 4 connected with the rear rotating disc 6 forms a whole, the planetary gear 4 connected with the movable rotating shaft is prevented from shaking the planetary gear 4, and further, the vibration of the planetary speed reducer is prevented from being influenced by shaking the planetary speed reducer.
Embodiment 3, this embodiment differs from embodiment 1 in that:
The L-shaped groove 18 is arranged near the upper position of the inner wall of the shell 1; the opening of the L-shaped groove 18 communicated with the inner wall of the shell 1 is downward; impurities in the shaft withdrawing space 16 are far away from the L-shaped groove 18 under the action of gravity;
during operation, the planetary reducer can generate abrasion impurities in the operation process, the impurities move downwards under the action of gravity, and because the L-shaped groove 18 is limited to the upper position of the inner wall of the shell 1 in the embodiment, the impurities can move away from the L-shaped groove 18 under the action of gravity, so that the impurities cannot remain in the L-shaped groove 18, and then the L-shaped strip 19 can stably slide in the L-shaped groove 18, so that the planetary reducer can more stably adjust the meshing quantity of the planetary gears 4.
Example 4, this example differs from example 1 in that:
The inner wall of the planetary gear 4, which is in contact with the movable rotating shaft, is provided with a movable groove 44; the movable groove 44 is annular; a movable ring 45 is movably connected in the movable groove 44; the movable ring 45 is sleeved on the outer wall of the movable rotating shaft; the movable ring 45 is fixedly connected with the outer wall of the movable rotating shaft; the thickness of the movable ring 45 in the axial direction is smaller than the width of the movable groove 44 in the axial direction; the planetary gears 4 on the movable rotating shafts can enter the inner side of the inner ring gear 5 in sequence according to the self-meshing condition.
In this embodiment, two second springs 46 are disposed inside the movable slot 44; two of said second springs 46 are located on either side of the movable ring 45; the second spring 46 is sleeved outside the corresponding movable rotating shaft;
During operation, the movable rotating shaft drives the connected planetary gears 4 to enter the inner side of the inner ring gear 5, teeth on the planetary gears 4 on the movable rotating shaft are blocked by the inner ring gear 5 and the sun gear 2 under the condition that the teeth are not corresponding to the inner ring gear 5, and the second spring 46 can push the planetary gears 4 to reset along with the transmission process of the planetary gears 4 and the sun gear 2 and the inner ring gear 5 when a medium continuously enters the L-shaped groove 18 to push the L-shaped strip 19 to move, the movable rotating shaft continuously approaches the front rotating disk 3, the movable rotating shaft can drive the movable ring 45 to move in the movable groove 44, so that the second spring 46 on the front side of the movable ring 45 is extruded until the teeth on the planetary gears 4 on the movable rotating shaft, the inner ring gear 5 and the sun gear 2 are corresponding to each other, the second spring 46 can push the planetary gears 4 to enter the inner side of the inner ring gear 5, and the planetary gears 4 can be pushed to reset along with the transmission process of the planetary gears 4, and the movable ring gear 4 can move to the initial position in the movable groove 44, and the movable ring 45 and the movable ring 44 form a movement gap along with the movement gap, and the planetary gears 4 can enter the inner ring gear 5 smoothly along with the inner ring gear 5, and the inner ring gear 5 can enter the inner side of the inner ring gear 5 smoothly, and the inner ring gear 5 smoothly.
Example 5, this example differs from example 1 in that:
The movable rotating shaft consists of a male shaft 71 and a female shaft 72; the male shaft 71 and the female shaft 72 are mutually inserted and connected, and can be mutually far away from or close to each other; one end of the female shaft 72, which is far away from the male shaft 71, is fixedly connected with the swivel 8; one end of the male shaft 71 far away from the female shaft 72 is fixedly connected to the inner side of the corresponding front hole 31; the male shaft 71 forms a support after the corresponding planetary gear 4 is disengaged; the male shaft 71 guides the corresponding planetary gears 4 in the process of entering the inner side of the inner ring gear 5;
In operation, in the process that the movable rotating shaft drives the connected planetary gears 4 to be far away from the front turntable 3 in the driving process, the male shaft 71 and the female shaft 72 generate relative motion, and the length of the whole movable rotating shaft is increased, so that even if the corresponding planetary gears 4 are moved out of the inner side of the inner ring gear 5, the planetary gears 4 in the tooth withdrawing space 62 are more stable under the support of the female shaft 72 and the male shaft 71, and in the process that the movable rotating shaft drives the connected planetary gears 4 to enter the inner side of the inner ring gear 5, the planetary gears 4 connected with the movable rotating shaft are easier and more stable to enter the inner side of the inner ring gear 5 under the guiding effect under the cooperation of the female shaft 72 and the male shaft 71, so as to complete the re-meshing process.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention, and furthermore, the terms "first", "second", "third", etc. are merely used for distinguishing the description, and should not be construed as indicating or implying relative importance.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A high-stability planetary reducer comprises a shell (1) and a sun gear (2) in the center of the interior of the shell (1); the front end face of the sun gear (2) is rotationally connected with the front rotary table (3), and the rear end face of the sun gear is fixedly connected with the input shaft (21); one end of the output shaft (11) is fixedly connected with the center of the front turntable (3); the sun gear (2) is meshed with the inner ring gear (5) through a planetary gear (4) in the shell (1); the method is characterized in that:
The inner wall of the shell (1) is positioned at the rear side of the sun gear (2) and is rotationally connected with the rear turntable (6); the center of the planetary gear (4) is rotationally connected with a rotating shaft (7); the end part of one part of the rotating shaft (7) is fixedly connected in a front hole (31) on the corresponding front rotary table (3) and a rear hole (61) on the rear rotary table (6); the end part of the other part of the rotating shaft (7) is movably connected in a front hole (31) on the corresponding front rotary table (3) and a rear hole (61) on the rear rotary table (6); a tooth withdrawing space (62) is reserved between the rear rotary table (6) and the sun gear (2); the other part of the rotating shaft (7) can drive the part of the planetary gears (4) to move to the tooth withdrawing space (62) along the axial direction;
The rotating shaft (7) capable of generating relative movement with the rear rotating disc (6) is called a movable rotating shaft, and the rotating shaft (7) capable of keeping relative rest with the rear rotating disc (6) is called a fixed rotating shaft; the number of the movable rotating shafts is equal to that of the fixed rotating shafts; the movable rotating shaft and the fixed rotating shaft are alternately and uniformly arranged around the sun gear (2); the movable rotating shaft can drive part of the planetary gears (4) to be disengaged from the sun gear (2) and engaged again;
A driving cavity (13) is formed in the rear end of the shell (1); the driving cavity (13) is connected with a driving plate (14) in a sliding and sealing manner; the drive plate (14) divides the drive cavity (13) into a first drive cavity and a second drive cavity; the first driving cavity is communicated with the outer wall of the shell (1) through a step hole (15); the step hole (15) is internally connected with an inner hexagon bolt (17) in a threaded manner; the inner hexagon bolt (17) is rotationally connected with the driving plate (14); a shaft withdrawing space (16) is arranged between the rear side of the rear rotary table (6) and the rear side of the shell (1); the rotating ring (8) is fixedly connected in the shaft withdrawing space (16); the swivel (8) is fixedly connected with the movable rotating shaft; the central axis of the swivel (8) coincides with the central axis of the input shaft (21); an annular groove (81) is formed in the outer wall of the swivel (8); an L-shaped groove (18) is formed in the inner wall of the shaft withdrawing space (16); the L-shaped groove (18) is connected with an L-shaped strip (19) in a sliding sealing way; one end of the L-shaped strip (19) extends to the shaft withdrawing space (16) and is inserted into the annular groove (81); the L-shaped groove (18) is communicated with the second driving cavity through an air hole (181); the second driving cavity is filled with a medium; the medium pressure in the second driving cavity can push the L-shaped strip (19) to drive the swivel (8) and the movable rotating shaft to move along the axial direction, so that the movable rotating shaft drives the corresponding planetary gear (4) to be meshed with the sun gear (2) again.
2. The highly stable planetary reducer according to claim 1, wherein: a clamping block (41) is arranged on one surface of the planetary gear (4) on the movable rotating shaft, which is far away from the front turntable (3); a clamping groove (63) is formed in the front side of the rear rotary table (6) and corresponds to the clamping block (41); the clamping grooves (63) are distributed uniformly around the corresponding rear holes (61); the planetary gear (4) on the movable rotating shaft stops rotating after the clamping block (41) is clamped into the clamping groove (63).
3. The highly stable planetary reducer according to claim 2, characterized in that: a groove (42) is formed in one surface, far away from the front turntable (3), of the planetary gear (4) on the movable rotating shaft; the clamping block (41) is connected in the groove (42) in a sliding way; the bottom of the groove (42) is connected with the clamping block (41) through a first spring (43).
4. The highly stable planetary reducer according to claim 1, wherein: the L-shaped groove (18) is arranged close to the upper position of the inner wall of the shell (1); the opening of the L-shaped groove (18) communicated with the inner wall of the shell (1) is downward; impurities in the shaft withdrawing space (16) are far away from the L-shaped groove (18) under the action of gravity.
5. The highly stable planetary reducer according to claim 1, wherein: the inner wall of the planetary gear (4) contacted with the movable rotating shaft is provided with a movable groove (44); the movable groove (44) is annular; a movable ring (45) is movably connected in the movable groove (44); the movable ring (45) is sleeved on the outer wall of the movable rotating shaft; the movable ring (45) is fixedly connected with the outer wall of the movable rotating shaft; the thickness of the movable ring (45) in the axial direction is smaller than the width of the movable groove (44) in the axial direction; the planetary gears (4) on the movable rotating shafts can enter the inner side of the inner ring gear (5) successively according to the self-meshing condition.
6. The highly stable planetary reducer according to claim 5, wherein: two second springs (46) are arranged in the movable groove (44); two second springs (46) are arranged on two sides of the movable ring (45); the second spring (46) is sleeved outside the corresponding movable rotating shaft.
7. The highly stable planetary reducer according to claim 1, wherein: the movable rotating shaft consists of a male shaft (71) and a female shaft (72); the male shaft (71) and the female shaft (72) are mutually inserted and can be mutually far away from or close to each other; one end of the female shaft (72) far away from the male shaft (71) is fixedly connected with the swivel (8); one end of the male shaft (71) far away from the female shaft (72) is fixedly connected to the inner side of the corresponding front hole (31); the male shaft (71) forms a support after the corresponding planetary gear (4) is disengaged; the male shaft (71) is guided during the process of the corresponding planetary gear (4) entering the inner side of the inner ring gear (5).
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| CN202410216883.3A CN117780873B (en) | 2024-02-28 | 2024-02-28 | High stable planetary reducer |
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| CN103375535A (en) * | 2012-04-13 | 2013-10-30 | 劲力工业有限公司 | Reducer with combined type planetary gear set |
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| CN117780873A (en) | 2024-03-29 |
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