CN215980767U - Miniaturized lightweight second grade planetary reducer - Google Patents
Miniaturized lightweight second grade planetary reducer Download PDFInfo
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- CN215980767U CN215980767U CN202122552235.XU CN202122552235U CN215980767U CN 215980767 U CN215980767 U CN 215980767U CN 202122552235 U CN202122552235 U CN 202122552235U CN 215980767 U CN215980767 U CN 215980767U
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- primary
- shaft
- connecting seat
- planet
- input shaft
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000007667 floating Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The utility model discloses a miniaturized and lightweight secondary planetary reducer which comprises an input shaft, an input connecting seat, a primary planetary assembly, a primary inner gear ring, a secondary planetary assembly, a secondary inner gear ring, an output connecting seat and an output shaft, wherein the input connecting seat is connected with the input shaft; the input shaft and the primary sun gear are designed into an integral structure, the front end of the integral structure is connected with a spline shaft of a motor or a hydraulic motor, and the rear end of the integral structure is meshed with the primary planet gear; the primary planet component is in meshing transmission with the input shaft and the primary inner gear ring; the primary planetary assembly is arranged on the input shaft and the secondary sun gear in a floating manner; the secondary planet component is in meshing transmission with the secondary sun gear and the secondary inner gear ring; and the secondary planetary assembly is arranged on spline shafts of the secondary sun gear and the output shaft on one side in the speed reducer in a floating manner. The utility model has compact and reasonable structure, greatly reduces the axial size of the speed reducer and the whole weight of the speed reducer, and can meet the requirement of small-space installation.
Description
Technical Field
The utility model relates to a speed reducer, in particular to a two-stage planetary speed reducer which is small and light.
Background
The planetary reducer has the characteristics of large reduction ratio, high transmission efficiency, small volume, light weight, few faults, long service life, stable and reliable operation, low noise, convenient disassembly and assembly, easy maintenance and the like, is widely applied, is an important part in the field of mechanical transmission, and is particularly widely applied in the industries of hoisting, excavating, transporting and the like.
The main transmission structure of the planetary reducer comprises a planet wheel, a sun wheel and an inner gear ring. One set of planet gear, the sun gear and the inner gear ring form a primary speed reducer. Because the first-stage speed reducer can not meet the requirement of a larger transmission ratio, two sets of speed reducers are sometimes needed to meet the requirement of a user on the larger transmission ratio. Due to the fact that parts are increased by one time or more, the volume and the weight of the two-stage planetary reducer are increased, and the two-stage planetary reducer cannot be used under the condition that the installation space is limited.
With the continuous development of science and technology, the planetary reducer is developing towards the direction of miniaturization and lightweight to solve the problem that the existing planetary reducer can not meet the requirement of installation space and is overweight in weight.
Disclosure of Invention
The utility model aims to provide a miniaturized and light-weight two-stage planetary reducer which is compact in overall structure, can be mounted in a small space and is greatly lightened.
In order to achieve the purpose, the utility model can adopt the following technical scheme:
the utility model relates to a miniaturized and lightweight secondary planetary reducer which comprises an input shaft, an input connecting seat, a primary planetary assembly, a primary inner gear ring, a secondary planetary assembly, a secondary inner gear ring, an output connecting seat and an output shaft, wherein the input connecting seat is connected with the input shaft;
in order to reduce the volume of the speed reducer and reduce the whole weight of the speed reducer, the input shaft and the first-stage sun gear are designed into an integrated structure, the front end of the integrated structure is connected with a spline shaft of a motor or a hydraulic motor, and the rear end of the integrated structure is meshed with the first-stage planet gear; the primary planetary assembly is in meshing transmission with the input shaft and the primary inner gear ring; the primary planetary assembly is arranged on the input shaft and the secondary sun gear in a floating manner; the secondary planetary assembly is in meshing transmission with the secondary sun gear and the secondary inner gear ring; and the secondary planet assembly is arranged on spline shafts of the secondary sun gear and the output shaft on one side in the speed reducer in a floating manner.
The input shaft is installed on the input connecting seat through a deep groove ball bearing.
The side wall of the input shaft connecting seat is provided with air holes, and the air holes are provided with air permeable caps for ventilating and radiating the speed reducer.
The outer end face (matched with the installation face of the motor or the hydraulic motor) of the input shaft connecting seat is provided with a groove for installing an O-shaped sealing ring, and the O-shaped sealing ring installed on the groove can play a good sealing role.
The primary planet assembly comprises a primary planet carrier, a primary planet wheel and a primary planet shaft, and the primary planet wheel is in transmission connection with the primary planet shaft through a cylindrical roller bearing; the secondary planet component comprises a secondary planet carrier, a secondary planet wheel and a secondary planet shaft; the secondary planet wheel is in transmission connection with a secondary planet shaft through two cylindrical roller bearings; a copper sleeve is arranged between the primary planet carrier and the secondary planet carrier; the copper sleeve can play a role in reducing friction between the first-stage planet carrier and the second-stage planet carrier and in axial positioning.
And ball tops are arranged between the input shaft and the secondary sun gear and between the secondary sun gear and the output shaft. The ball top is treated by adopting a quenching process, so that the surface hardness of the ball top is improved, and the effects of axial positioning, noise reduction and frictional heating can be achieved.
The output shaft is mounted on an output coupling seat through a pair of tapered roller bearings, and a positioning pad is arranged between the secondary planet carrier and the tapered roller bearings so as to limit the axial position of the output shaft.
An output shaft transparent cover is installed at the end part of the output connecting seat, and a wear-resistant sleeve and a framework oil seal are sequentially arranged on a joint surface of the output shaft and the output shaft transparent cover. The wear-resistant sleeve adopts a nitriding process to improve the surface hardness and is in friction fit with the framework oil seal to play a sealing role.
And O-shaped sealing rings are designed on the joint surfaces between the input connecting seat and the first-stage inner gear ring, between the first-stage inner gear ring and the second-stage inner gear ring, between the second-stage inner gear ring and the output connecting seat, and between the output connecting seat and the output shaft transparent cover, so as to play a good sealing role.
The utility model has the advantages that the structure is compact and reasonable, and the axial size of the speed reducer can be reduced by the integrated design of the input shaft and the first-stage sun gear; the primary planet carrier adopts a single supporting structure, the primary planet component and the secondary planet component both adopt a floating installation mode, are positioned by meshing of the sun gear and the planet gear, and are not positioned by a conventional bearing, so that the axial size of the speed reducer and the overall weight of the speed reducer are greatly reduced; the secondary planet carrier adopts a double-support structure and can bear larger torque.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a block diagram of the primary planetary assembly of FIG. 1.
FIG. 3 is a block diagram of the secondary planetary assembly of FIG. 1.
Detailed Description
The present invention will be described in more detail below with reference to the accompanying drawings so as to facilitate understanding for those skilled in the art.
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" in the description of the present application are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
As shown in fig. 1, the miniaturized and lightweight secondary planetary reducer of the present invention comprises an input shaft 1, an input coupling seat 2, a primary planetary assembly, a primary inner gear ring 3, a secondary planetary assembly, a secondary inner gear ring 4, an output coupling seat 5 and an output shaft 6;
wherein: the primary planet assembly comprises a primary planet carrier 101, a primary planet wheel 102 and a primary planet shaft 103; the primary planet gear 102 is in transmission connection with a primary planet shaft 103 through a cylindrical roller bearing 104, and the single-support cantilever type structure of the primary planet shaft can reduce the axial size and weight of the primary planet carrier, as shown in fig. 2.
The secondary planet component comprises a secondary planet carrier 201, a secondary planet wheel 202 and a secondary planet shaft 203; the secondary planet wheel 202 is in transmission connection with a secondary planet shaft 203 through two cylindrical roller bearings 204; the two-stage planet shaft is supported at two ends, so that the two-stage planet carrier forms a double-support structure and can bear larger torque, as shown in fig. 3.
In order to reduce the volume of the speed reducer and reduce the whole weight of the speed reducer, the input shaft 1 and the original first-level sun gear are designed into an integrated structure, the input shaft 1 is arranged on the input connecting seat 2 through a deep groove ball bearing 7 (a ring groove can be arranged on the outer peripheral surface of the input shaft 1, and a retaining ring is arranged in the ring groove to limit the position of the deep groove ball bearing 7); the front end of the input shaft 1 is connected with a spline shaft of a motor or a hydraulic motor, the rear end of the input shaft is used as a primary sun gear to be in meshing transmission with a primary planet gear 102 in a primary planet assembly, and the primary planet gear 102 is in meshing transmission with the input shaft 1 and a primary inner gear ring 3 and drives a primary planet carrier 101 to rotate; the primary planet carrier 101 is connected with the secondary sun gear 8 through inner and outer teeth to drive the secondary sun gear 8 to rotate, the secondary sun gear 8 is in meshing transmission with a secondary planet gear 202 in the secondary planet component, the secondary planet gear 202 is in meshing transmission with a secondary inner gear ring 4 and drives a secondary planet carrier 201 to rotate, the secondary planet carrier 201 is connected with the output shaft 6 through an inner spline to drive the output shaft 6 to rotate, and working torque is provided. At the moment, the first-stage planetary assembly is arranged on the input shaft 1 and the second-stage sun gear 8 in a floating mode, the second-stage planetary assembly is arranged on the spline shaft of the second-stage sun gear 8 and the spline shaft of the output shaft 6 on one side of the inner portion of the speed reducer in a floating mode, the speed reducer is positioned by meshing of the sun gear and the planet gears in the working process without bearing positioning, the axial size of the speed reducer is reduced to the greatest extent, and the whole weight of the speed reducer is also greatly reduced.
A copper sleeve 9 is arranged between the first-stage planet carrier 101 and the second-stage planet carrier 201, and the copper sleeve 9 can reduce friction between the first-stage planet carrier and the second-stage planet carrier and has an axial positioning effect.
The output shaft 6 is mounted on the output coupling seat 5 through a pair of tapered roller bearings 11, and a positioning pad 12 is provided between the secondary planet carrier 201 and the tapered roller bearings 11 to define the axial position thereof.
An output shaft transparent cover 13 is arranged at the end part of the output connecting seat 5, and a wear-resistant sleeve 14 and a framework oil seal 15 are sequentially arranged on the combined surface of the output shaft 6 and the output shaft transparent cover 13. The wear-resistant sleeve 14 adopts a nitriding process to improve the surface hardness and is in friction fit with the framework oil seal 15 to play a good sealing role.
The speed reducer adopts an internal oil storage and splash lubrication mode to lubricate the gear and the bearing.
The side wall of the input shaft connecting seat 2 is provided with an air vent, and an air vent cap 16 is arranged on the air vent and used for ventilating and radiating the inside of the speed reducer.
The outer end face of the input shaft connecting seat 2 (matched with the mounting face of the motor or the hydraulic motor) is provided with a groove for mounting an O-shaped sealing ring, and the O-shaped sealing ring 17 mounted on the groove can play a good sealing role.
In order to improve the sealing performance of each part of the speed reducer, O-shaped sealing rings are designed on the joint surfaces between the input connecting seat 2 and the primary inner gear ring 3, between the primary inner gear ring 3 and the secondary inner gear ring 4, between the secondary inner gear ring 4 and the output connecting seat 5 and between the output connecting seat 5 and the output shaft transparent cover 13 so as to play a good sealing role.
Claims (8)
1. A miniaturized and lightweight secondary planetary reducer comprises an input shaft, an input connecting seat, a primary planetary assembly, a primary inner gear ring, a secondary planetary assembly, a secondary inner gear ring, an output connecting seat and an output shaft; the method is characterized in that:
the input shaft and the first-stage sun gear are of an integrated structure, the front end of the input shaft is connected with a spline shaft of a motor or a hydraulic motor, and the rear end of the input shaft is meshed with the first-stage planet gear;
the primary planetary assembly is in meshing transmission with the input shaft and the primary inner gear ring;
the primary planetary assembly is arranged on the input shaft and the secondary sun gear in a floating manner;
the secondary planetary assembly is in meshing transmission with the secondary sun gear and the secondary inner gear ring;
and the secondary planet assembly is arranged on spline shafts of the secondary sun gear and the output shaft on one side in the speed reducer in a floating manner.
2. The two-stage planetary reduction gear according to claim 1, wherein: the input shaft is installed on the input connecting seat through a deep groove ball bearing.
3. The two-stage planetary reduction gear according to claim 2, wherein: air holes are formed in the side wall of the input shaft connecting seat, and air permeable caps are mounted on the air holes;
and a groove for mounting an O-shaped sealing ring is formed in the outer end face of the input shaft connecting seat.
4. The two-stage planetary reduction gear according to claim 1, wherein:
the primary planet assembly comprises a primary planet carrier, a primary planet wheel and a primary planet shaft, and the primary planet wheel is in transmission connection with the primary planet shaft through a cylindrical roller bearing;
the secondary planet component comprises a secondary planet carrier, a secondary planet wheel and a secondary planet shaft; the secondary planet wheel is in transmission connection with a secondary planet shaft through two cylindrical roller bearings;
and a copper sleeve is arranged between the primary planet carrier and the secondary planet carrier.
5. The two-stage planetary reduction gear according to claim 1, wherein: and ball tops are arranged between the input shaft and the secondary sun gear and between the secondary sun gear and the output shaft.
6. The two-stage planetary reduction gear according to claim 1, wherein: the output shaft is arranged on the output connecting seat through a pair of tapered roller bearings, and a positioning pad is arranged between the secondary planet carrier and the tapered roller bearings.
7. The two-stage planetary reduction gear according to claim 6, wherein: an output shaft transparent cover is installed at the end part of the output connecting seat, and a wear-resistant sleeve and a framework oil seal are sequentially arranged on a joint surface of the output shaft and the output shaft transparent cover.
8. The two-stage planetary reduction gear according to claim 1, wherein: and O-shaped sealing rings are designed on the joint surfaces between the input connecting seat and the primary inner gear ring, between the primary inner gear ring and the secondary inner gear ring, between the secondary inner gear ring and the output connecting seat, and between the output connecting seat and the output shaft transparent cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122552235.XU CN215980767U (en) | 2021-10-22 | 2021-10-22 | Miniaturized lightweight second grade planetary reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122552235.XU CN215980767U (en) | 2021-10-22 | 2021-10-22 | Miniaturized lightweight second grade planetary reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215980767U true CN215980767U (en) | 2022-03-08 |
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ID=80512729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122552235.XU Expired - Fee Related CN215980767U (en) | 2021-10-22 | 2021-10-22 | Miniaturized lightweight second grade planetary reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215980767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492902A (en) * | 2022-11-03 | 2022-12-20 | 苏州亚太精睿传动科技股份有限公司 | Self-decelerating driving gear and rotation driving system |
-
2021
- 2021-10-22 CN CN202122552235.XU patent/CN215980767U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492902A (en) * | 2022-11-03 | 2022-12-20 | 苏州亚太精睿传动科技股份有限公司 | Self-decelerating driving gear and rotation driving system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |