CN220706363U - Star wheel speed reducer - Google Patents

Abstract

The utility model provides a star wheel speed reducer, and belongs to the technical field of speed reducers; the star wheel speed reducer comprises: the device comprises a first box body, a first gear ring, a first planet wheel, an input shaft assembly, a first planet carrier, an intermediate shaft, an eccentric sleeve, a second gear ring, a second box body, a second planet wheel, a third planet wheel, an eccentric shaft, a second planet carrier and an output shaft; the eccentric shaft drives the second planet carrier and the output shaft to rotate, so that the rotating speed of the intermediate shaft is reduced, the input rotating speed is reduced for a plurality of times, the transmission of the product is more stable, and noise is generated during transmission is reduced. Because the input rotating shaft of the input shaft assembly is decelerated for a plurality of times, impact force between transmission parts can be reduced, and therefore the transmission parts can be used in a maintenance-free manner in a long term, and the use experience of products is improved.

Description

Star wheel speed reducer

Technical Field

The utility model belongs to the technical field of speed reducers, and particularly relates to a star wheel speed reducer.

Background

In the related art, an input end of a speed reducer is connected with a driving device, and an output end of the speed reducer is connected with a load device, so that the rotating speed of the driving device is reduced, and the load device is driven to operate at a proper rotating speed.

When the speed reducer reduces the rotation speed of the driving device, a mode of mutually meshing a plurality of gears is generally adopted to realize power transmission. If the impact force among the transmission parts is too large, the transmission parts are easy to damage, so that the maintenance frequency of the transmission parts is improved, and the use experience of products is reduced.

Disclosure of Invention

In order to solve the problems that in the prior art, the impact force between the transmission parts is too large, and the transmission parts are easy to damage, so that the maintenance frequency of the transmission parts is improved, and the product use experience is reduced. The specific technical scheme is as follows:

a star wheel speed reducer, the star wheel speed reducer comprising: the device comprises a first box body, a first gear ring, a first planet wheel, an input shaft assembly, a first planet carrier, an intermediate shaft, an eccentric sleeve, a second gear ring, a second box body, a second planet wheel, a third planet wheel, an eccentric shaft, a second planet carrier and an output shaft; the first gear ring is provided with first internal teeth and is fixed in the first box body; the outer walls of the first planetary gears are provided with first external teeth, at least two first planetary gears are embedded into the first gear ring, and the first external teeth of the at least two first planetary gears are meshed with the first internal teeth of the first gear ring; the outer wall of one end of the input shaft assembly is provided with second external teeth, the input shaft assembly penetrates into the first box body, the input shaft assembly is rotationally connected with the first box body, one end of the input shaft assembly is positioned in the first box body, and the second external teeth of the input shaft assembly are meshed with the first external teeth of the first planet gears; the first planet carriers are simultaneously connected with at least two first planet gears, and the first planet carriers are positioned on one side of the input shaft assembly; the intermediate shaft is connected with the first planet carrier; the eccentric sleeve is wound on the outer side of the intermediate shaft; the second gear ring is internally provided with second internal teeth, and is connected with the first box body; the second box body is connected with a second gear ring; the outer wall of the second planet wheel is provided with third external teeth, the second planet wheel is sleeved on the outer side of the eccentric sleeve, the second planet wheel is rotationally connected with the eccentric sleeve, and the third external teeth of the second planet wheel are meshed with the second internal teeth of the second gear ring; the outer wall of the third planetary gear is provided with fourth external teeth, the third planetary gear is sleeved on the outer side of the eccentric sleeve, and the fourth external teeth of the third planetary gear are meshed with the second internal teeth of the second gear ring; at least two eccentric shafts sequentially pass through the second planetary gear and the third planetary gear; the second planet carrier is connected with at least two eccentric shafts at the same time, and the second planet carrier is rotationally connected with the second box body; the output shaft is connected with the second planet carrier.

In addition, the star wheel speed reducer in the technical scheme provided by the utility model can also have the following additional technical characteristics:

in the above technical solution, the input shaft assembly includes: the device comprises a shell, a high-speed shaft, a connecting part and a sun shaft; the shell is a hollow cavity and is arranged in the first box body; the high-speed shaft penetrates into the shell and is rotationally connected with the shell; the connecting part is internally provided with third internal teeth and is connected with the high-speed shaft; the outer wall of the sun shaft is provided with second external teeth, at least part of the sun shaft is embedded into the connecting part, and the second external teeth of the sun shaft are simultaneously meshed with the third internal teeth of the connecting part and the first external teeth of the first planet gears.

In the above technical scheme, the connecting part and the sun shaft are of an integrated structure.

In the above technical solution, the input shaft assembly includes: a bearing and a bearing cap; the two bearings are sleeved on the outer side of the high-speed shaft, and the two bearings are embedded into the shell; the bearing cover is connected with the shell, and the bearing cover is attached to one bearing.

In the above technical solution, the input shaft assembly includes: a first framework oil seal; the first framework oil seal is embedded into the bearing cover, and the first framework oil seal is wound on the outer side of the high-speed shaft.

In the above technical scheme, the star wheel speed reducer further comprises: a first connecting key groove and a second connecting key groove; the first connecting key groove is arranged on the outer wall of the input shaft assembly, and the first connecting key groove is positioned on the outer side of the first box body; the second is connected the keyway setting on the outer wall of output shaft, and the second is connected the keyway and is located the outside of second box.

In the above technical scheme, the star wheel speed reducer further comprises: an oil drain hole and an oil drain plug; the oil drain hole is internally provided with a first internal thread and is arranged on the side wall of the second box body; the outer wall of the oil drain plug is provided with a first external thread, and the oil drain plug is embedded into the oil drain hole; wherein, first internal thread and first external screw thread looks adaptation.

In the above technical scheme, the star wheel speed reducer further comprises: a second framework oil seal; the second framework oil seal is embedded into the second box body, and the second framework oil seal is wound on the outer side of the output shaft.

Compared with the prior art, the star wheel speed reducer has the beneficial effects that:

1. the input shaft assembly drives at least two first planetary gears to rotate, so that the at least two first planetary gears revolve along the inner wall of the first gear ring, and the first planet carrier and the at least two first planetary gears rotate, so that a planetary gear speed reducing structure is formed by the input shaft assembly, the at least two first planetary gears, the first gear ring and the first planet carrier, and the input rotating speed of the input shaft assembly is reduced. The intermediate shaft drives the second planetary gear and the third planetary gear to be meshed with the inner wall of the second gear ring to rotate through the eccentric sleeve, so that an eccentric shaft connected with the second planetary gear and the third planetary gear simultaneously is driven to revolve in the second box body. Simultaneously, make the eccentric shaft drive second planet carrier and output shaft rotation to realize decelerating the rotational speed of jackshaft, and then realize decelerating input rotational speed many times, with the transmission of product more steady, and noise is produced when reducing the transmission. Because the input rotating shaft of the input shaft assembly is decelerated for a plurality of times, impact force between transmission parts can be reduced, and therefore the transmission parts can be used in a maintenance-free manner in a long term, and the use experience of products is improved.

2. The connecting part is connected with the high-speed shaft so as to realize that the high-speed shaft can drive the connecting part to rotate. At least part of the sun shaft is embedded into the connecting part, and the second outer teeth of the sun shaft are meshed with the third inner teeth of the connecting part and the first outer teeth of the first planet gears at the same time, so that when the high-speed shaft drives the connecting part to rotate, the connecting part drives the sun shaft to rotate, and the sun shaft drives the first planet gears to rotate.

3. Through setting up connecting portion and sun axle as integral type structure to realize connecting portion and sun axle one shot forming, thereby promote connecting portion and sun axle's joint strength.

4. The bearing cover is connected with the shell, and the bearing cover is attached to one bearing, so that the bearing cover can fix the bearing in the shell, the bearing is prevented from being separated from the shell, and the stability of the bearing is improved.

5. Through with first skeleton oil blanket embedding bearing cap in to with first skeleton oil blanket around establishing the outside at the high-speed axle, with the realization first skeleton oil blanket seals the clearance between bearing cap and the high-speed axle, thereby avoid the lubricating oil in the casing to flow out through the clearance between bearing cap and the high-speed axle, and then promote the leakproofness of product.

6. Through setting up first connecting key groove on the outer wall of input shaft assembly to make first connecting key groove be located the outside of first box, be connected with input shaft assembly through first connecting key groove with the realization drive arrangement, thereby promote the use experience of product. Through setting up the keyway on the outer wall of input shaft assembly is connected to the second to make the keyway be located the outside of second box connected to the second, so that realize that load device is connected with the output shaft through the keyway is connected to the second, thereby promote the use experience of product.

7. Through setting up the oil drain hole on the lateral wall of second box, with oil drain plug embedding oil drain hole to make the interior first internal thread of oil drain hole and the first external screw thread looks adaptation on the oil drain plug outer wall, in order to realize oil drain plug and second box threaded connection, thereby reduce the degree of difficulty that the oil drain plug was installed on lower box, simultaneously, can also realize closing the oil drain hole through the oil drain plug, and then avoid lubricating oil to flow from lower box.

8. Through embedding second skeleton oil blanket in the second box to with the outside at the output shaft is wound to the second skeleton oil blanket, in order to realize the clearance seal between second box and the output shaft to the second skeleton oil blanket, thereby prevent that lubricating oil in the second box from flowing out through the clearance between second box and the output shaft, in order to promote the leakproofness of product.

Drawings

FIG. 1 is a cross-sectional view of a star wheel speed reducer of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

wherein, the correspondence between the reference numerals and the component names in fig. 1 to 3 is:

the device comprises a first box body, a first gear ring, a first planet wheel, a 13 input shaft assembly, a 131 shell, a 132 high-speed shaft, a 133 connecting part, a 134 sun shaft, a 135 bearing, a 136 bearing cover, a 137 first framework oil seal, a 14 first planet carrier, a 15 middle shaft, a 16 eccentric sleeve, a 17 second gear ring, a 18 second box body, a 19 second planet wheel, a 20 third planet wheel, a 21 eccentric shaft, a 22 second planet carrier, a 23 output shaft, a 24 first connecting key slot, a 25 second connecting key slot, a 26 oil drain plug and a 27 second framework oil seal.

Detailed Description

The utility model will be further described with reference to specific embodiments and figures 1-3, but the utility model is not limited to these embodiments.

As shown in fig. 1 to 3, the star wheel speed reducer includes: the first box 10, the first gear ring 11, the first planet gears 12, the input shaft assembly 13, the first planet carrier 14, the intermediate shaft 15, the eccentric sleeve 16, the second gear ring 17, the second box 18, the second planet gears 19, the third planet gears 20, the eccentric shaft 21, the second planet carrier 22 and the output shaft 23; the first ring gear 11 is provided with first internal teeth, and the first ring gear 11 is fixed in the first casing 10; the outer walls of the first planetary gears 12 are provided with first external teeth, at least two first planetary gears 12 are embedded into the first gear ring 11, and the first external teeth of the at least two first planetary gears 12 are meshed with the first internal teeth of the first gear ring 11; the outer wall of one end of the input shaft assembly 13 is provided with second external teeth, the input shaft assembly 13 penetrates into the first box body 10, the input shaft assembly 13 is rotationally connected with the first box body 10, one end of the input shaft assembly 13 is positioned in the first box body 10, and the second external teeth of the input shaft assembly 13 are meshed with the first external teeth of the first planet gears 12; the first planet carrier 14 is connected with at least two first planet gears 12 at the same time, and the first planet carrier 14 is positioned at one side of the input shaft assembly 13; the intermediate shaft 15 is connected with the first planet carrier 14; the eccentric sleeve 16 is wound on the outer side of the intermediate shaft; the second gear ring 17 is internally provided with second internal teeth, and the second gear ring 17 is connected with the first box body 10; the second box 18 is connected with the second gear ring 17; the outer wall of the second planet wheel is provided with third external teeth, the second planet wheel 19 is sleeved on the outer side of the eccentric sleeve 16, the second planet wheel 19 is rotationally connected with the eccentric sleeve 16, and the third external teeth of the second planet wheel 19 are meshed with the second internal teeth of the second gear ring 17; the outer wall of the third planetary gear is provided with fourth external teeth, the third planetary gear 20 is sleeved on the outer side of the eccentric sleeve 16, and the fourth external teeth of the third planetary gear 20 are meshed with the second internal teeth of the second gear ring 17; at least two eccentric shafts 21 pass through the second planetary gear 19 and the third planetary gear 20 in sequence; the second planet carrier 22 is connected with at least two eccentric shafts 21 at the same time, and the second planet carrier 22 is connected with the second box 18 in a rotating way; the output shaft 23 is connected to the second carrier 22.

The first casing 10 supports the first ring gear 11 by fixing the first ring gear 11 in the first casing 10. The input shaft assembly 13 is penetrated into the first box body 10, the input shaft assembly 13 is rotatably connected with the first box body 10, and one end of the input shaft assembly 13 is positioned in the first box body 10, so that the first box body 10 supports the input shaft assembly 13, and the input shaft assembly 13 can rotate in the first box body 10; by meshing the first external teeth of the at least two first planetary gears 12 with the first internal teeth of the first ring gear 11 and meshing the second external teeth of the input shaft assembly 13 with the first external teeth of the first planetary gears 12, when the input shaft assembly 13 rotates, the input shaft assembly 13 drives the at least two first planetary gears 12 to rotate, and the at least two first planetary gears 12 rotate along the inner wall of the first ring gear 11. By connecting the first planet carrier 14 with at least two first planet gears 12 at the same time and positioning the first planet carrier 14 at one side of the input shaft assembly 13, when the at least two first planet gears 12 rotate along the inner wall of the first gear ring 11, the at least two first planet gears 12 drive the first planet carrier 14 to rotate; meanwhile, the intermediate shaft 15 is connected with the first planet carrier 14, so that the first planet carrier 14 drives the intermediate shaft 15 to rotate. The eccentric sleeve 16 is wound on the outer side of the intermediate shaft, so that the intermediate shaft 15 drives the eccentric sleeve 16 to rotate. The connection of the first casing 10, the second ring gear 17, and the second casing 18 is achieved by connecting the second ring gear 17 with the first casing 10 and connecting the second casing 18 with the second ring gear 17. By sleeving the second planetary gear 19 on the outer side of the eccentric sleeve 16, the second planetary gear 19 is rotationally connected with the eccentric sleeve 16, and the third external teeth of the second planetary gear 19 are meshed with the second internal teeth of the second gear ring 17, so that when the intermediate shaft 15 rotates, the intermediate shaft 15 drives the second planetary gear 19 to eccentrically rotate through the eccentric sleeve 16, and when the second planetary gear 19 eccentrically rotates, the second planetary gear 19 is meshed with the second internal teeth of the second gear ring 17 to rotate along the inner wall of the second gear ring 17. Meanwhile, the third planet gear 20 is sleeved on the outer side of the eccentric sleeve 16, and the fourth external tooth of the third planet gear 20 is meshed with the second internal tooth of the second gear ring 17, so that the intermediate shaft 15 drives the third planet gear 20 to eccentrically rotate through the eccentric sleeve 16, and the third planet gear is meshed with the second internal tooth of the second gear ring 17 to rotate along the inner wall of the second gear ring 17. The at least two eccentric shafts 21 sequentially penetrate through the second planetary gear 19 and the third planetary gear 20, and the second planet carrier 22 is simultaneously connected with the at least two eccentric shafts 21, so that the second planetary gear 19 and the third planetary gear 20 drive the eccentric shafts 21 to rotate in the second box 18, and the at least two eccentric shafts 21 drive the second planet carrier 22 to rotate in the second box 18. The output shaft 23 is connected with the second planet carrier 22, so that the second planet carrier 22 drives the output shaft 23 to rotate, and power output is realized.

When the product is specifically used, the input shaft assembly 13 drives at least two first planetary gears 12 to rotate, the at least two first planetary gears 12 revolve along the inner wall of the first gear ring 11, meanwhile, the first planet carrier 14 is connected with the at least two first planetary gears 12, and the intermediate shaft 15 is connected with the first planet carrier 14, so that the plurality of first planetary gears 12 drive the first planet carrier 14 to rotate, the first planet carrier 14 drives the intermediate shaft 15 to rotate, and the input rotation speed of the input shaft assembly 13 is reduced. When the intermediate shaft 15 rotates, the intermediate shaft 15 drives the second planetary gears 19 and the third planetary gears 20 to eccentrically rotate through the eccentric sleeve 16, so that the second planetary gears 19 and the third planetary gears simultaneously mesh with the second internal teeth of the second ring gear 17 to rotate along the inner wall of the second ring gear 17. Since the eccentric shafts 21 pass through the second planetary gears 19 and the third planetary gears 20 in order, the second planetary gears 19 and the third planetary gears 20 will alternately mesh with the second ring gear 17, and at the same time, the second planetary gears 19 and the third planetary gears 20 will drive the eccentric shafts 21 to revolve in the second casing 18. The second planet carrier 22 is connected with at least two eccentric shafts 21 at the same time, and the output shaft 23 is connected with the second planet carrier 22, so that the at least two eccentric shafts 21 drive the second planet carrier 22 and the output shaft 23 to rotate, the rotation speed of the intermediate shaft 15 is reduced, and further the power output is realized.

By adopting the structure, the input shaft assembly 13 drives at least two first planetary gears 12 to rotate, so that the at least two first planetary gears 12 revolve along the inner wall of the first gear ring 11, and the first planet carrier 14 and the at least two first planetary gears 12 rotate, so that the input shaft assembly 13, the at least two first planetary gears 12, the first gear ring 11 and the first planet carrier 14 form a planetary gear speed reducing structure, and the input rotating speed of the input shaft assembly 13 is reduced. The intermediate shaft 15 drives the second planetary gear 19 and the third planetary gear 20 to be meshed with the inner wall of the second gear ring 17 to rotate through the eccentric sleeve 16, so that the eccentric shaft 21 connected with the second planetary gear 19 and the third planetary gear 20 is driven to revolve in the second box 18. Simultaneously, the eccentric shaft 21 drives the second planet carrier 22 and the output shaft 23 to rotate, so that the speed of the intermediate shaft 15 is reduced, the input speed is reduced for a plurality of times, the transmission of the product is more stable, and the noise generated during transmission is reduced. Because the input rotating shaft of the input shaft assembly 13 is decelerated for a plurality of times, impact force between transmission parts can be reduced, so that the transmission parts can be used in a maintenance-free manner in a long term, and the use experience of products is improved.

In an embodiment of the present utility model, as shown in fig. 1 to 3, the input shaft assembly 13 includes: a housing 131, a high-speed shaft 132, a connection portion 133, and a sun shaft 134; the shell 131 is a hollow cavity, and the shell 131 is installed in the first box 10; the high-speed shaft 132 penetrates the housing 131, and the high-speed shaft 132 is rotatably connected with the housing 131; a third internal tooth is provided in the connecting portion 133, and the connecting portion 133 is connected to the high-speed shaft 132; the outer wall of the sun shaft 134 is provided with second external teeth, at least part of the sun shaft 134 is embedded in the connecting portion 133, and the second external teeth of the sun shaft 134 are simultaneously meshed with the third internal teeth of the connecting portion 133 and the first external teeth of the first planet gears 12.

By installing the housing 131 in the first casing 10, the high-speed shaft 132 is inserted into the housing 131, and the high-speed shaft 132 is rotatably connected with the housing 131, so that the housing 131 supports the high-speed shaft 132, thereby realizing that the high-speed shaft 132 can rotate in the housing 131. By connecting the connection portion 133 with the high-speed shaft 132, it is achieved that the high-speed shaft 132 can rotate the connection portion 133. By embedding at least part of the sun shaft 134 into the connecting portion 133, the second external teeth of the sun shaft 134 are simultaneously engaged with the third internal teeth of the connecting portion 133 and the first external teeth of the first planet gear 12, so that when the high-speed shaft 132 drives the connecting portion 133 to rotate, the connecting portion 133 drives the sun shaft 134 to rotate, and the sun shaft 134 drives the first planet gear 12 to rotate.

In the embodiment of the present utility model, as shown in fig. 1 to 3, the connection portion 133 and the sun shaft 134 are integrally formed.

The connecting part 133 and the sun shaft 134 are arranged into an integrated structure, so that the connecting part 133 and the sun shaft 134 are formed by one-step machining, and the connecting strength of the connecting part 133 and the sun shaft 134 is improved.

In an embodiment of the present utility model, as shown in fig. 1 to 3, the input shaft assembly 13 includes: a bearing 135 and a bearing cover 136; two bearings 135 are sleeved on the outer side of the high-speed shaft 132, and the two bearings 135 are embedded in the housing 131; the bearing cap 136 is connected to the housing 131, and the bearing cap 136 is fitted with one bearing 135.

By fitting two bearings 135 on the outside of the high-speed shaft 132 and embedding the two bearings 135 into the housing 131, the housing 131 supports the high-speed shaft 132 through the bearings 135, thereby improving the flexibility of rotation of the high-speed shaft 132. By connecting the bearing cover 136 with the housing 131 and attaching the bearing cover 136 to one of the bearings 135, the bearing cover 136 secures the bearing 135 within the housing 131, thereby preventing the bearing 135 from being detached from the housing 131 and improving the stability of the bearing 135.

In an embodiment of the present utility model, as shown in fig. 1 to 3, the input shaft assembly 13 includes: a first skeleton oil seal 137; the first frame oil seal 137 is embedded in the bearing cap 136, and the first frame oil seal 137 is wound on the outside of the high-speed shaft 132.

By embedding the first framework oil seal 137 into the bearing cover 136 and winding the first framework oil seal 137 on the outer side of the high-speed shaft 132, a gap between the bearing cover 136 and the high-speed shaft 132 is sealed by the first framework oil seal 137, so that lubricating oil in the shell 131 is prevented from flowing out through the gap between the bearing cover 136 and the high-speed shaft 132, and the sealing performance of a product is improved.

In an embodiment of the present utility model, as shown in fig. 1 to 3, the star wheel speed reducer further includes: a first connecting key groove 24 and a second connecting key groove 25; the first connecting key groove 24 is arranged on the outer wall of the input shaft assembly 13, and the first connecting key groove 24 is positioned on the outer side of the first box body 10; the second connecting key groove 25 is provided on the outer wall of the output shaft 23, and the second connecting key groove 25 is located outside the second casing 18.

Through setting up first connecting keyway 24 on the outer wall of input shaft assembly 13 to make first connecting keyway 24 be located the outside of first box 10, be connected with input shaft assembly 13 through first connecting keyway 24 with the realization drive arrangement, thereby promote the use experience of product. Through setting up second connection keyway 25 on the outer wall of input shaft assembly 13 to make second connection keyway 25 be located the outside of second box 18, be connected with output shaft 23 through second connection keyway 25 with the realization load device, thereby promote the use experience of product.

In an embodiment of the present utility model, as shown in fig. 1 to 3, the star wheel speed reducer further includes: an oil drain hole and plug 26; a first internal thread is arranged in the oil drain hole, and the oil drain hole is arranged on the side wall of the second box 18; the outer wall of the oil drain plug 26 is provided with a first external thread, and the oil drain plug 26 is embedded into the oil drain hole; wherein, first internal thread and first external screw thread looks adaptation.

Through setting up the oil drain hole on the lateral wall of second box 18, with oil drain plug 26 embedding oil drain hole to make the first internal thread in the oil drain hole and the first external screw thread looks adaptation on the oil drain plug 26 outer wall, in order to realize oil drain plug 26 and second box 18 threaded connection, thereby reduce the degree of difficulty that oil drain plug 26 was installed on lower box, simultaneously, can also realize closing the oil drain hole through oil drain plug 26, and then avoid lubricating oil to flow from lower box.

In an embodiment of the present utility model, as shown in fig. 1 to 3, the star wheel speed reducer further includes: a second skeleton oil seal 27; the second frame oil seal 27 is embedded in the second case 18, and the second frame oil seal 27 is wound on the outer side of the output shaft 23.

The second framework oil seal 27 is embedded into the second box body 18, and the second framework oil seal 27 is wound on the outer side of the output shaft 23, so that the second framework oil seal 27 seals a gap between the second box body 18 and the output shaft 23, and lubricating oil in the second box body 18 is prevented from flowing out through the gap between the second box body 18 and the output shaft 23, and the sealing performance of a product is improved.

In the description of the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. A star wheel speed reducer, characterized in that it comprises:

a first case;

the first gear ring is provided with first internal teeth and is fixed in the first box body;

the outer wall of the first planet gear is provided with first external teeth, at least two first planet gears are embedded into the first gear ring, and the first external teeth of the at least two first planet gears are meshed with the first internal teeth of the first gear ring;

the outer wall of one end of the input shaft assembly is provided with second external teeth, the input shaft assembly penetrates into the first box body, the input shaft assembly is rotationally connected with the first box body, one end of the input shaft assembly is positioned in the first box body, and the second external teeth of the input shaft assembly are meshed with the first external teeth of the first planet gears;

a first planet carrier, wherein the first planet carrier is connected with at least two first planet gears at the same time, and the first planet carrier is positioned at one side of the input shaft assembly;

the intermediate shaft is connected with the first planet carrier;

the eccentric sleeve is wound on the outer side of the intermediate shaft;

the second gear ring is internally provided with second internal teeth and is connected with the first box body;

the second box body is connected with the second gear ring;

the outer wall of the second planet wheel is provided with third external teeth, the second planet wheel is sleeved on the outer side of the eccentric sleeve, the second planet wheel is rotationally connected with the eccentric sleeve, and the third external teeth of the second planet wheel are meshed with the second internal teeth of the second gear ring;

the outer wall of the third planetary gear is provided with fourth external teeth, the third planetary gear is sleeved on the outer side of the eccentric sleeve, and the fourth external teeth of the third planetary gear are meshed with the second internal teeth of the second gear ring;

the eccentric shafts penetrate through the second planetary gears and the third planetary gears in sequence;

the second planet carrier is connected with at least two eccentric shafts at the same time, and is rotationally connected with the second box body;

and the output shaft is connected with the second planet carrier.

2. The star wheel reducer of claim 1, wherein said input shaft assembly comprises:

the shell is a hollow cavity and is arranged in the first box body;

the high-speed shaft penetrates into the shell and is rotationally connected with the shell;

the connecting part is internally provided with third internal teeth and is connected with the high-speed shaft;

the solar shaft is provided with second external teeth on the outer wall of the solar shaft, at least part of the solar shaft is embedded into the connecting part, and the second external teeth of the solar shaft are simultaneously meshed with the third internal teeth of the connecting part and the first external teeth of the first planet gears.

3. A star wheel speed reducer according to claim 2, characterized in that:

the connecting part and the sun shaft are of an integrated structure.

4. The star wheel reducer of claim 2, wherein said input shaft assembly comprises:

the two bearings are sleeved on the outer side of the high-speed shaft, and are embedded into the shell;

and the bearing cover is connected with the shell and is attached to one bearing.

5. The star wheel reducer of claim 4, wherein said input shaft assembly comprises:

the first framework oil seal is embedded into the bearing cover, and the first framework oil seal is wound on the outer side of the high-speed shaft.

6. The star wheel reducer of claim 1, further comprising:

the first connecting key groove is arranged on the outer wall of the input shaft assembly, and the first connecting key groove is positioned on the outer side of the first box body;

the second is connected the keyway, the second is connected the keyway and is set up on the outer wall of output shaft, just the second is connected the keyway and is located the outside of second box.

7. The star wheel reducer of claim 6, further comprising:

the oil drain hole is internally provided with a first internal thread and is arranged on the side wall of the second box body;

the oil drain plug is embedded into the oil drain hole;

wherein, first internal thread with first external screw thread looks adaptation.

8. The star wheel reducer of claim 7, further comprising:

the second framework oil seal is embedded into the second box body, and the second framework oil seal is wound on the outer side of the output shaft.