CN212429640U - Novel planetary reducer - Google Patents
Novel planetary reducer Download PDFInfo
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- CN212429640U CN212429640U CN202020813435.9U CN202020813435U CN212429640U CN 212429640 U CN212429640 U CN 212429640U CN 202020813435 U CN202020813435 U CN 202020813435U CN 212429640 U CN212429640 U CN 212429640U
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Abstract
The utility model discloses a novel planetary reducer, including input shaft and a plurality of planet axle, be provided with the sun gear group on the input shaft, the utility model discloses possess more excellent output torque capacity to can obtain very big reduction ratio, through on dispersing more planet wheels to the power, improve the bearing capacity of reduction gear, simultaneously the utility model discloses still have compact structure, satisfy number of teeth Z of sun gear A, ring gear B and ring gear EA、ZBAnd ZCBe the integral multiple of planet axle number, can guarantee that same epaxial planet wheel D of planet is unanimous completely with planet wheel C phase difference to possess good equal year characteristic, the input-output relation is not unique, can design the novel planetary reducer who satisfies oneself demand as required, planet wheel C equals with planet wheel D phase difference, need not calculate the phase difference of each planet wheel C and planet wheel D, it is convenient, succinct to join in marriage the tooth, the cost is practiced thrift, production efficiency has been improved.
Description
Technical Field
The utility model relates to a reduction gear especially relates to a novel planetary reducer.
Background
The traditional planetary reducer is mostly accelerated and decelerated step by step and shunted at the same stage. The characteristics of large output torque, small space volume and the like required in the aviation field lead the prior planetary reducer to be insufficient in output torque exposure in application.
In the NGWN type mechanism of the planetary reducer, the reduction ratio is increased, the structure is compact, the volume is reduced, and the NGWN type mechanism is accepted by the aviation field. But the bearing capacity is insufficient and the output torque is limited.
The defects brought by a gear speed increaser system are not overcome, and the capability of shunting large torque in the system is not realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel planetary reducer to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a novel planetary reducer, includes input shaft and a plurality of planet axle, be provided with the sun gear group on the input shaft, a plurality of planet axle middle parts all are provided with planet wheel C and both ends all are provided with planet wheel D, the input shaft peripheral survey is provided with ring gear B, and ring gear B both sides all are provided with ring gear E, float between sun gear group and the ring gear B and install and be used for carrying out spacing support ring, ring gear B and a plurality of planet wheel C inner gearing, ring gear E and a plurality of its homonymy planet wheel D inner gearing, sun gear group and planet wheel C or planet wheel D meshing, one of them fixed mounting is selected to ring gear B and ring gear E in assembly process.
The sun wheel set comprises a sun wheel A, the sun wheel A is arranged on the input shaft, and the sun wheel A is meshed with the planet wheel C.
The sun wheel set comprises two sun wheels A, the two sun wheels A are both arranged on the input shaft, and the two sun wheels A are respectively meshed with a plurality of planet wheels D on the same side.
And the gear ring B is fixedly installed in the assembling process.
The ring gear E is fixedly mounted during assembly.
And a rocker arm is arranged on the outer side of the gear ring B.
The tooth numbers of the sun gear A, the gear ring B and the gear ring E are integral multiples of the number of the planet shafts.
The utility model has the advantages that:
1. the utility model discloses possess more excellent output torque capacity to can obtain very big reduction ratio, through to the power dispersion to more planet wheels on, improve the bearing capacity of reduction gear, simultaneously the utility model discloses still have compact structure.
2. The number of teeth Z of the sun gear A, the gear ring B and the gear ring E needs to be satisfiedA、ZBAnd ZCThe phase difference between the planet wheel D and the planet wheel C on the same planet shaft can be ensured to be completely consistent, and the device has good load-balancing characteristic.
3. The utility model discloses an input/output relation is not only, can design out the novel planetary reducer who satisfies own demand as required.
4. The utility model discloses well planet wheel C equals with planet wheel D phase difference, need not calculate each planet wheel C and planet wheel D's phase difference, and it is convenient, succinct to join in marriage the tooth, has practiced thrift the cost, has improved production efficiency.
Drawings
FIG. 1 is a schematic diagram of a prior art NGWN I type transmission;
fig. 2 is a transmission schematic diagram of a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first embodiment of the present invention;
fig. 4 is a transmission schematic diagram of a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second embodiment of the present invention.
In the figure, 1-sun gear A, 2-gear ring B, 3-planet gear C, 4-planet gear D, 5-gear ring E, 6-support ring, 7-input shaft, 8-planet shaft, 9-rocker arm, 10-sun gear f, 11-gear ring g, 12-planet gear h, 13-planet gear i, 14-gear ring j and 15-planet carrier k.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
Referring to fig. 1 of the drawings, a drawing,
the sun gear f10, the planet carrier k15, the ring gear g11 and the ring gear j14 are all free to rotate, i.e. their rotational degrees of freedom are not limited, and the NGWNI-type structure works as long as any of the above parts is fixed during assembly.
Now, the ring gear g11 is fixed, the sun gear f10 is used as an input end, and the transmission path is as follows:
the gear ring g11 is fixed, the input of the sun gear f10 is transmitted to the external meshing planetary gear h12, then transmitted to the planetary gear i13, and finally output through the internal meshing gear ring j14, and the structure and the transmission path of the gear ring g11 show that the gear ring g still has the capability of shunting a large moment in a system.
Through combing analysis, the final output capacity of the conventional NGWN I type planetary reducer is greatly influenced by a final-stage gear ring. The bearing capacity is not effectively improved. By distributing the force over more planet wheels, the bearing capacity of the reducer is improved.
Example one
Referring to fig. 2 to 3, the present embodiment provides a novel planetary reducer, including an input shaft 7 and a plurality of planetary shafts 8, where the input shaft 7 is provided with a sun gear a1, the middle portions of the planetary shafts 8 are provided with planetary gears C3, and both ends of the planetary shafts are provided with planetary gears D4, the outside of the input shaft 7 is provided with a ring gear B2, both sides of the ring gear B2 are provided with ring gears E5, a support ring 6 for limiting the planetary shafts 8 is installed between the sun gear a1 and the ring gear B2 in a floating manner, the ring gear B2 is internally engaged with the planetary gears C3, the ring gear E5 is internally engaged with the planetary gears D4 on the same side, the sun gear a1 is externally engaged with the planetary gears C3, the ring gear B2 is fixedly installed in an assembly process, and the number of teeth of the sun gear a1, the ring gear B2, and the ring gear E5.
The transmission path is as follows:
in this embodiment, ring gear B2 is fixed, sun gear A1 is the input;
the worm gear can be selected as a power input mechanism, power is transmitted to the input shaft 7, the sun gear A1 rotates, the planet gear C3 is driven to rotate, the planet shaft 8 rotates, the planet gears D4 on two sides rotate, and the gear rings E5 on two sides rotate to output power.
The following conditions are satisfied during the assembly process:
1. concentric condition
The standard gear and the high conversion gear need to satisfy the following formula:
mtA(ZA+ZC)＝mtB(ZB-ZC)＝mtE(ZE-ZD)
the angle modified gear needs to satisfy the following formula:
the above formulas are all the existing NGWN type I coordination formulas.
2. Conditions of assembly
The number of teeth Z of the sun gear A1, the ring gear B2 and the ring gear E5 is required to be satisfiedA、ZBAnd ZCAre all integer multiples of the number of planet shafts 8.
3. Adjacent condition(s)
According to adjacent conditions of the gears, the following formula is required to be met to ensure that the installation does not interfere:
Zc>Zdtime of flight
Zc<ZdTime of flight
The above formulas are all the existing NGWN type I coordination formulas.
4. Same phase condition
According to the research calculation, Z needs to be satisfiedA、ZBAnd ZCAll being 8 planet shaftsIntegral multiple, can guarantee that planet wheel D4 on same planet axle 8 is completely unanimous with planet wheel C3 phase difference to possess good even load characteristic.
Although the gear ring E5 and the planet wheel D4 meet the NGWN I gear matching relationship;
the sun gear A1, the planet gear C3 and the ring gear B2 meet the NGW gear matching relationship;
because planet wheel C3 all is fixed mounting on same root planet axle 8 with planet wheel D4, if adopt the same planet wheel (planet wheel C3 is the same with planet wheel D4 each item parameter promptly), just need to guarantee that all planet wheels C3 are the same with the angular relation between planet wheel D4, can satisfy the installation.
And then satisfy ZA、ZBAnd ZCThe condition of integral multiple of the number of the planet shafts 8 is adopted, the tooth matching process can be simplified, the cost is saved, and the production efficiency is improved.
Example two
Referring to FIGS. 4 to 5, the following drawings are provided,
different from the first embodiment, the input shaft 7 is provided with two sun gears a1, the two sun gears a1 are respectively meshed with a plurality of planet gears D4 on the same side, the gear ring E5 is fixedly arranged in the assembling process, and the outer side of the gear ring B2 is provided with the rocker arm 9.
The transmission path is as follows:
in this embodiment, ring gear E5 is fixed, sun gear A1 is the input;
the power input mechanism can be selected from a worm gear, power is transmitted to the input shaft 7, the sun gears A1 on two sides rotate, the planet gears D4 on two sides are driven to rotate, the planet shaft 8 rotates, the planet gears C3 rotate, the gear ring B2 rotates, and the power is output by the aid of the rocker arm 9.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (7)
1. A novel planetary reducer comprises an input shaft (7) and a plurality of planetary shafts (8), and is characterized in that: be provided with the sun gear group on input shaft (7), a plurality of planet axle (8) middle parts all are provided with planet wheel C (3) and both ends all are provided with planet wheel D (4), input shaft (7) peripheral survey is provided with ring gear B (2), and ring gear B (2) both sides all are provided with ring gear E (5), float between sun gear group and ring gear B (2) and install and be used for carrying out spacing support ring (6) to planet axle (8), ring gear B (2) and a plurality of planet wheel C (3) inner gearing, ring gear E (5) and a plurality of its homonymy planet wheel D (4) inner gearing, sun gear group and planet wheel C (3) or planet wheel D (4) meshing, one of them fixed mounting is selected in ring gear B (2) and ring gear E (5) assembling process.
2. The novel planetary reducer according to claim 1, wherein: the sun wheel set comprises a sun wheel A (1), the sun wheel A (1) is installed on the input shaft (7), and the sun wheel A (1) is meshed with the planet wheel C (3).
3. The novel planetary reducer according to claim 1, wherein: the sun wheel set comprises two sun wheels A (1), the two sun wheels A (1) are installed on the input shaft (7), and the two sun wheels A (1) are respectively meshed with a plurality of planet wheels D (4) on the same side.
4. The novel planetary reducer according to claim 1, wherein: and the gear ring B (2) is fixedly installed in the assembling process.
5. The novel planetary reducer according to claim 1, wherein: the gear ring E (5) is fixedly mounted in the assembly process.
6. The novel planetary reducer according to claim 5, wherein: and a rocker arm (9) is arranged on the outer side of the gear ring B (2).
7. A novel planetary reducer according to claim 2 or 3, characterized in that: the tooth numbers of the sun gear A (1), the gear ring B (2) and the gear ring E (5) are integral multiples of the number of the planet shafts (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020813435.9U CN212429640U (en) | 2020-05-15 | 2020-05-15 | Novel planetary reducer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020813435.9U CN212429640U (en) | 2020-05-15 | 2020-05-15 | Novel planetary reducer |
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| CN212429640U true CN212429640U (en) | 2021-01-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520442A (en) * | 2020-05-15 | 2020-08-11 | 成都飞亚航空设备应用研究所有限公司 | Novel planetary reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520442A (en) * | 2020-05-15 | 2020-08-11 | 成都飞亚航空设备应用研究所有限公司 | Novel planetary reducer |
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Effective date of registration: 20211108 Address after: 100089 building 4, zone 4, Xishan Creative Park, Haidian District, Beijing Patentee after: BEIJING XINXING EAST AVIATION EQUIPMENT CO.,LTD. Address before: No.480, north section of Jinxiu Avenue, Chengdu cross strait science and Technology Industry Development Park, Wenjiang District, Chengdu City, Sichuan Province Patentee before: CHENGDU FEIYA AIRBORNE EQUIPMENT APPLICATION RESEARCH Co.,Ltd. |