CN214171298U - Precise planetary gear speed reducer - Google Patents
Precise planetary gear speed reducer Download PDFInfo
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- CN214171298U CN214171298U CN202023083471.3U CN202023083471U CN214171298U CN 214171298 U CN214171298 U CN 214171298U CN 202023083471 U CN202023083471 U CN 202023083471U CN 214171298 U CN214171298 U CN 214171298U
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- output shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- General Details Of Gearings (AREA)
Abstract
The utility model provides an accurate planetary gear speed reducer belongs to mechanical technical field. The precision planetary gear reducer comprises a cylindrical box body, an input shaft and an output shaft, wherein the input shaft and the output shaft are rotatably arranged in the box body; a locking ring is arranged in the left port of the box body, the outer wall of the locking ring is fixedly connected with the box body in a sealing manner, and the inner wall of the locking ring forms a seal with the output shaft through an oil seal; the right end of the locking ring is tightly pressed on the left bearing outer ring, and a shaft shoulder for tightly pressing the right end of the left bearing inner ring is arranged on the output shaft; the right end of the output shaft and the inner wall of the box body are respectively provided with a first annular abutting surface and a second annular abutting surface, and the left end of the inner ring of the right bearing and the right end of the outer ring of the right bearing are respectively tightly pressed on the first annular abutting surface and the second annular abutting surface. This accurate planetary gear reducer assembles the convenience.
Description
Technical Field
The utility model belongs to the technical field of machinery, a gear reducer, especially an accurate planetary gear speed reducer are related to.
Background
The precision planetary reducer is another name for planetary reducer in industry, and its main transmission structure is: planet wheel, sun gear, ring gear. Compared with other speed reducers, the precision planetary speed reducer has the characteristics of high rigidity, high precision (the single stage can be within 1 minute), high transmission efficiency (the single stage is 97-98 percent), high torque/volume ratio, no maintenance for life and the like. Most of the motors are arranged on a stepping motor and a servo motor and are used for reducing the rotating speed, improving the torque and matching the inertia.
In order to avoid axial shaking when an axial gap is generated in the installation of an output shaft of the precision planetary reducer to cause transmission, a plurality of bolt parts are adopted to fixedly connect the output shaft and the transmission part so as to lock the output shaft in the prior art, and the operation is inconvenient because a plurality of bolts are needed to be arranged on hole positions.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the above-mentioned problem to current technique, provided an accurate planetary gear speed reducer convenient to equipment.
The purpose of the utility model can be realized by the following technical proposal: a precise planetary gear reducer comprises a cylindrical box body, an input shaft and an output shaft, wherein the input shaft and the output shaft are horizontally and rotatably arranged in the box body, the input shaft and the output shaft are coaxial, the left end of the output shaft extends out of the box body, the left end of the input shaft is provided with a sun gear, a gear ring is formed on the inner wall of the box body, a planetary gear is meshed between the sun gear and the gear ring and is connected with the output shaft, and the precise planetary gear reducer is characterized in that the output shaft is rotatably connected with the box body through a left bearing and a right bearing, and the planetary gear is positioned between the left bearing and the right bearing; a locking ring coaxial with the output shaft is arranged in the left port of the box body, the locking ring is sleeved outside the output shaft, the outer wall of the locking ring is fixedly connected with the box body in a sealing manner, and the inner wall of the locking ring forms a seal with the output shaft through an oil seal; the right end of the locking ring is tightly pressed on the left bearing outer ring, and a shaft shoulder for tightly pressing the right end of the left bearing inner ring is arranged on the output shaft; the right end of the output shaft and the inner wall of the box body are respectively provided with a first annular abutting surface and a second annular abutting surface which are coaxial with the output shaft, and the left end of the inner ring and the right end of the outer ring of the right bearing are respectively tightly pressed on the first annular abutting surface and the second annular abutting surface.
The locking ring arranged in the left port of the box body is tightly pressed on the left bearing, so that the output shaft has the tendency of moving rightwards, the right bearing is always limited on the annular abutting surface I and the annular abutting surface II, the axial movement gap of the output shaft is effectively eliminated, the axial shaking in the transmission process is avoided, and the transmission stability and precision are improved.
This application only needs at box left side port locking ring alright eliminate output shaft at the ascending movement clearance of axial, for locking the output shaft through parts such as many bolts among the prior art, has the convenient advantage of equipment.
In the precise planetary gear reducer, the outer wall of the locking ring is fixedly connected with the box body in a sealing mode through a thread structure, so that the locking ring can move rightwards by rotating the locking ring, the locking ring is enabled to be pressed on the left bearing more tightly, and the assembly is more convenient and easier.
In the precise planetary gear reducer, the locking ring is provided with the jacks which are axially arranged, the jacks are blind holes, the hole openings of the jacks are arranged towards the left, and at least two jacks are uniformly distributed along the circumferential direction of the locking ring. The jack is used for rotating the locking ring with the cooperation of instrument, like this in the actual product, can effectively reduce the length of locking ring outside the box, makes whole structure comparatively compact.
As another scheme, in the precision planetary gear reducer, the shape and size of the outer wall of the locking ring are matched with the inner wall of the left port of the box body, and the outer wall of the locking ring is tightly matched and fixedly connected with the box body.
In foretell precision planetary gear reducer, the box is including all being tube-shape and coaxial left box and right box, and left box and right box seal link firmly, and input shaft and output shaft are located right box and left box respectively, form the ring channel that axial cross-section is "U" shape between left box and the right box, and the ring channel is including just right lateral wall and the right lateral wall that sets up, and the right lateral wall is foretell annular and supports pressing surface two, and the left lateral wall sticiss on right bearing inner race left end. By adopting the design, the right bearing can be further positioned, the installation of the right bearing is guided, and the assembly convenience is improved.
In the above-described precision planetary gear reducer, the input shaft and the sun gear are of an integrated structure to ensure maximum torsional rigidity and zero backlash power transmission at high input rotation speeds.
Compared with the prior art, the precision planetary gear speed reducer has the following advantages:
1. the locking ring arranged in the left port of the box body is tightly pressed on the left bearing, so that the output shaft has the tendency of moving rightwards, the right bearing is always limited on the annular abutting surface I and the annular abutting surface II, the axial movement gap of the output shaft is effectively eliminated, the axial shaking in the transmission process is avoided, and the transmission stability and precision are improved.
2. This application only needs at box left side port locking ring alright eliminate output shaft at the ascending movement clearance of axial, for locking the output shaft through parts such as many bolts among the prior art, has the convenient advantage of equipment.
Drawings
Fig. 1 is a schematic structural view of a precision planetary gear reducer.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
In the figure, 1, a box body; 1a, a left box body; 1b, a right box body; 1c, an annular groove; 1c1 and a second annular abutting surface; 2. an input shaft; 2a, a sun gear; 3. an output shaft; 3a, a shaft shoulder; 3b, a first annular abutting surface; 4. a planet wheel; 5. a left bearing; 6. a right bearing; 7. locking a ring; 7a, a jack; 8. oil sealing; 9. and (5) sealing rings.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1, the precision planetary gear reducer includes a cylindrical case 1, and an input shaft 2 and an output shaft 3 horizontally rotatably provided in the case 1. Wherein, the input shaft 2 and the output shaft 3 are coaxial; the left end of the output shaft 3 extends out of the box body 1, the input shaft 2 is rotatably connected with the box body 1 through a rolling bearing, the left end of the input shaft 2 is provided with a sun gear 2a, and the input shaft 2 and the sun gear 2a are preferably of an integrated structure so as to ensure maximum torsional rigidity and zero backlash power transmission at high input rotating speed.
Specifically, as shown in fig. 1 and 2, a ring gear is formed on the inner wall of the case 1, the ring gear is coaxial with the input shaft 2, and the sun gear 2a is located inside the ring gear. A planet wheel 4 is meshed between the sun wheel 2a and the gear ring, and the planet wheel 4 is connected with the output shaft 3. In this embodiment, planet wheel 4 has 3 and distributes along ring gear circumference, and every planet wheel 4 all links firmly with output shaft 3 through the round pin axle. As shown in fig. 1, the output shaft 3 is rotatably connected to the housing 1 via a left bearing 5 and a right bearing 6, and the planet gears 4 are disposed between the left bearing 5 and the right bearing 6. A locking ring 7 which is coaxial with the output shaft 3 is arranged in the left end opening of the box body 1, the locking ring 7 is sleeved outside the output shaft 3, the outer wall of the locking ring 7 is fixedly connected with the box body 1 in a sealing mode, the inner wall of the locking ring 7 forms sealing with the output shaft 3 through an oil seal 8, at the moment, the oil seal 8 is sleeved outside the output shaft 3, and the inner side wall and the outer side wall of the oil seal 8 are respectively abutted against the side wall of the output shaft 3 and the inner wall of the locking ring 7. The right end of the locking ring 7 is tightly pressed on the outer ring of the left bearing 5, and the output shaft 3 is provided with a shaft shoulder 3a for tightly pressing the right end of the inner ring of the left bearing 5. The right end of the output shaft 3 and the inner wall of the box body 1 are respectively provided with a first annular abutting surface 3b and a second annular abutting surface 1c1 which are coaxial with the output shaft 3, and the left end of the inner ring and the right end of the outer ring of the right bearing 6 are respectively tightly pressed on the first annular abutting surface 3b and the second annular abutting surface 1c 1. The locking ring 7 arranged in the left port of the box body 1 is tightly pressed on the left bearing 5, so that the output shaft 3 has the tendency of moving rightwards, the right bearing 6 is always limited on the first annular abutting surface 3b and the second annular abutting surface 1c1, the axial movement clearance of the output shaft 3 is effectively eliminated, the axial shaking in the transmission process is avoided, and the transmission stability and precision are improved.
The locking ring 7 is installed in the following manner: the outer wall of the locking ring 7 is fixedly connected with the box body 1 in a sealing mode through a thread structure, so that the locking ring 7 can be rotated to move rightwards, the locking ring 7 is enabled to be pressed on the left bearing 5 more tightly, and assembly is more convenient and easier. Further, the locking ring 7 is provided with axially arranged insertion holes 7a, the insertion holes 7a are blind holes, the openings of the insertion holes 7a are arranged towards the left, and at least two insertion holes 7a are uniformly distributed along the circumferential direction of the locking ring 7. The insertion hole 7a is used for rotating the locking ring 7 in cooperation with a tool, so that the length of the locking ring 7 outside the case 1 can be effectively reduced in an actual product, and the whole structure is compact.
In this embodiment, box 1 is including all being the tube-shape and coaxial left box 1a and right box 1b, and left box 1a and right box 1b seal and link firmly. Preferably, a sealing ring 9 for sealing between the left box body 1a and the right box body 1b is arranged between the left box body 1a and the right box body 1b, and the left box body 1a and the right box body 1b are fixedly connected through bolts. The input shaft 2 and the output shaft 3 are respectively positioned on the right box body 1b and the left box body 1a, an annular groove 1c with a U-shaped axial section is formed between the left box body 1a and the right box body 1b, the annular groove 1c comprises a left side wall and a right side wall which are just opposite to each other, the right side wall is a second annular abutting surface 1c1, and the left side wall is tightly pressed on the left end of the outer ring of the right bearing 6, so that the right bearing 6 can be further positioned, the right bearing 6 is guided to be installed, and the assembly convenience is improved.
Example two
The second embodiment is basically the same as the first embodiment in structure and principle, and the difference lies in: the shape and the size of the outer wall of the locking ring 7 are matched with the inner wall of the left port of the box body 1, and the outer wall of the locking ring 7 is tightly matched and fixedly connected with the box body 1.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A precision planetary gear speed reducer comprises a cylindrical box body (1), an input shaft (2) and an output shaft (3) which are horizontally and rotatably arranged in the box body (1), wherein the input shaft (2) and the output shaft (3) are coaxial, the left end of the output shaft (3) extends out of the box body (1), the left end of the input shaft (2) is provided with a sun wheel (2a), a gear ring is formed on the inner wall of the box body (1), a planetary wheel (4) is meshed between the sun wheel (2a) and the gear ring, and the planetary wheel (4) is connected with the output shaft (3), and is characterized in that the output shaft (3) is rotatably connected with the box body (1) through a left bearing (5) and a right bearing (6), and the planetary wheel (4) is positioned between the left bearing (5) and the right bearing (6); a locking ring (7) which is coaxial with the output shaft (3) is arranged in the left port of the box body (1), the locking ring (7) is sleeved outside the output shaft (3), the outer wall of the locking ring (7) is fixedly connected with the box body (1) in a sealing way, and the inner wall of the locking ring (7) forms a seal with the output shaft (3) through an oil seal (8); the right end of the locking ring (7) is tightly pressed on the outer ring of the left bearing (5), and a shaft shoulder (3a) for tightly pressing the right end of the inner ring of the left bearing (5) is arranged on the output shaft (3); the right end of the output shaft (3) and the inner wall of the box body (1) are respectively provided with a first annular abutting surface (3b) and a second annular abutting surface (1c1) which are coaxial with the output shaft (3), and the left end of the inner ring and the right end of the outer ring of the right bearing (6) are respectively tightly pressed on the first annular abutting surface (3b) and the second annular abutting surface (1c 1).
2. The precision planetary gear reducer according to claim 1, wherein the outer wall of the locking ring (7) is hermetically and fixedly connected with the box body (1) through a thread structure.
3. The precision planetary gear reducer according to claim 2, wherein the locking ring (7) has axially disposed insertion holes (7a), the insertion holes (7a) are blind holes, the openings of the insertion holes (7a) are disposed toward the left, and at least two insertion holes (7a) are uniformly distributed along the circumferential direction of the locking ring (7).
4. The precision planetary gear reducer according to claim 1, wherein the shape and size of the outer wall of the locking ring (7) are matched with the inner wall of the left port of the box body (1), and the outer wall of the locking ring (7) is tightly and fixedly connected with the box body (1).
5. The precision planetary gear reducer according to claim 1, wherein the casing (1) comprises a left casing (1a) and a right casing (1b) which are both cylindrical and coaxial, the left casing (1a) and the right casing (1b) are hermetically and fixedly connected, the input shaft (2) and the output shaft (3) are respectively located on the right casing (1b) and the left casing (1a), an annular groove (1c) with a U-shaped axial cross section is formed between the left casing (1a) and the right casing (1b), the annular groove (1c) comprises a left side wall and a right side wall which are oppositely arranged, the right side wall is the annular abutting surface two (1c1), and the left side wall is tightly pressed on the left end of the outer ring of the right bearing (6).
6. The precision planetary gear reducer according to claim 1, wherein the input shaft (2) and the sun gear (2a) are of an integral structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023083471.3U CN214171298U (en) | 2020-12-18 | 2020-12-18 | Precise planetary gear speed reducer |
| PCT/CN2021/119140 WO2022127240A1 (en) | 2020-12-18 | 2021-09-17 | Precision planetary gear reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023083471.3U CN214171298U (en) | 2020-12-18 | 2020-12-18 | Precise planetary gear speed reducer |
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| Publication Number | Publication Date |
|---|---|
| CN214171298U true CN214171298U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023083471.3U Active CN214171298U (en) | 2020-12-18 | 2020-12-18 | Precise planetary gear speed reducer |
Country Status (2)
| Country | Link |
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| CN (1) | CN214171298U (en) |
| WO (1) | WO2022127240A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127240A1 (en) * | 2020-12-18 | 2022-06-23 | 浙江三凯机电有限公司 | Precision planetary gear reducer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203098759U (en) * | 2013-03-05 | 2013-07-31 | 杭州博悦传动机械有限公司 | Double-module high-precision planetary reducing mechanism |
| DE102015003047B4 (en) * | 2015-03-11 | 2021-01-14 | Sew-Eurodrive Gmbh & Co Kg | Gear with one planetary gear stage |
| CN208703037U (en) * | 2018-06-19 | 2019-04-05 | 苏州法斯顿动力科技有限公司 | A kind of novel high torque planetary reducer structure |
| CN208686898U (en) * | 2018-08-10 | 2019-04-02 | 浙江三凯机电有限公司 | A kind of planetary reducer |
| CN210770058U (en) * | 2019-07-26 | 2020-06-16 | 江苏摩多利传动机械制造有限公司 | Novel reduce planetary reducer of output shaft axial float |
| CN214171298U (en) * | 2020-12-18 | 2021-09-10 | 浙江三凯机电有限公司 | Precise planetary gear speed reducer |
| CN214036795U (en) * | 2020-12-18 | 2021-08-24 | 浙江三凯机电有限公司 | Right-angle planetary gear reducer |
-
2020
- 2020-12-18 CN CN202023083471.3U patent/CN214171298U/en active Active
-
2021
- 2021-09-17 WO PCT/CN2021/119140 patent/WO2022127240A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127240A1 (en) * | 2020-12-18 | 2022-06-23 | 浙江三凯机电有限公司 | Precision planetary gear reducer |
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| Publication number | Publication date |
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| WO2022127240A1 (en) | 2022-06-23 |
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