CN204127213U - A kind of built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device - Google Patents

A kind of built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device Download PDF

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Publication number
CN204127213U
CN204127213U CN201420468166.1U CN201420468166U CN204127213U CN 204127213 U CN204127213 U CN 204127213U CN 201420468166 U CN201420468166 U CN 201420468166U CN 204127213 U CN204127213 U CN 204127213U
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China
Prior art keywords
gear
teeth difference
planet
panels
transmission device
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Withdrawn - After Issue
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CN201420468166.1U
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Chinese (zh)
Inventor
王长路
张立勇
张军顺
张和平
黄首峰
侯耐
吴恒
杨会波
陈正宇
王伟功
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ZHENGZHOU RESEARCH INSTITUTE OF ADVANCED EQUIPMENT & INFORMATION INDUSTRY TECHNOLOGY Co Ltd
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ZHENGZHOU RESEARCH INSTITUTE OF ADVANCED EQUIPMENT & INFORMATION INDUSTRY TECHNOLOGY Co Ltd
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Priority to CN201420468166.1U priority Critical patent/CN204127213U/en
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Abstract

A kind of built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device, described transmission device comprises two-stage transmission: one-level is few tooth difference transmission mechanism, comprise the internal gear of at least two panels few teeth difference external gear and respective numbers, another grade is for being placed on the planetary gears in the middle part of gear mechanism housing, and described planetary gears comprises sun gear and at least two panels planet wheel; Sun gear in described planetary gears and planet wheel are in the middle of adjacent two panels few teeth difference external gear; Described planet wheel combines with eccentric shaft; Described sun gear combines with input shaft, and the described input shaft the other end is arranged on left end cap; Be hinged on eccentric shaft with the set-up mode of phase difference 360o/n between the few teeth difference external gear that every two panels is adjacent, wherein n is external gear sheet number, and is meshed with internal gear, and internal gear is connected with housing; Few teeth difference external gear also will rotate backward while the revolution of internal gear axis at its axis; Output mechanism is promoted by left end cap combined with it, and the rotary motion on few teeth difference external gear is transmitted out.

Description

A kind of built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device
Technical field
The utility model relates to a kind of built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device, belongs to gear transmission field.
Background technique
Planetary Gear Transmission a kind ofly has at least a gear and geometrical axis thereof to make the gear drive of rotation motion around public geometrical axis.Because this device adopts several planet wheel transmitted load simultaneously, make power dividing and have employed Inside gear drive, thus there is a series of advantage: as compact structure, volume is little, lightweight, gear range is large, transmission efficiency is high, smooth running, noise are little, can carry out the composition and decomposition etc. that moves, thus be widely used on the equipment in the fields such as metallurgy, chemical industry, mine, lifting transport, boats and ships, turbine, as deceleration, speedup and variable speed drive.
Planet-gear transmission is the one in Gear Planet Transmission, forms internal gear pair by external gear and internal gear, and the number of teeth difference of internal-external gear is very little, therefore referred to as few teeth difference transmission.External gear is contained on the input shaft of retarder by bearing and eccentric shaft (cover).In order to balance portion inertial force and raising bearing capacity, usually adopt two panels or multi-disc gear, eccentric shaft (cover) having corresponding offset and is mutually 360o/n(n is external gear sheet number).Internal gear maintains static mostly.The planet carrier (bearing pin) that rotates through of external gear passes on output shaft by output mechanism, and keeps its angular velocity constant.The type of few teeth difference transmission is a lot, and Cycloidal pin-wheel drive is a type of extensive use in few teeth difference transmission, has developed two teeth difference transmission, compound tooth-shaped, planetary bearing and eccentric shaft (cover) on this basis and the new structure such as to have merged.Facts have proved, compared with other mechanical transmission form that few teeth difference transmission is identical with operating mode, to there is many remarkable advantages.
Summary of the invention
The utility model object is to provide a kind of structure stress more reasonable, and have that rigidity is high, volume is little, lightweight, life-span length, smooth running, the feature such as kinematic accuracy is high, return difference is little gear drive, be mainly used in the fields such as industrial robot, lathe, metallurgy, chemical industry, mine, lifting transport, boats and ships, turbine.
The purpose of this utility model realizes by following technique measures:
Built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device of the present utility model comprises two-stage transmission: one-level is few tooth difference transmission mechanism, comprise at least two panels few teeth difference external gear and internal gear, another grade is for being placed on the planetary gears in the middle part of gear mechanism housing, and described planetary gears comprises sun gear and at least two panels planet wheel; Sun gear in described planetary gears and planet wheel are in the middle of adjacent two panels few teeth difference external gear and (are conducive to reducing the axial dimension of retarder transmission device, be conducive to two cycloid wheel and planet wheel is stressed more evenly, transmission is more steady, and avoid the outside harsh environments of one-level gear planet, increase the operating life of one-level gear planet); Described planet wheel combines with eccentric shaft; Described sun gear combines with input shaft, and output shaft is arranged on left end cap; Be hinged on eccentric shaft with the set-up mode of phase difference 360o/n between the few teeth difference external gear that every two panels is adjacent, wherein n is external gear sheet number, and is meshed with internal gear, and internal gear is connected with housing; Few teeth difference external gear also will rotate backward while the revolution of internal gear axis at its axis; Output shaft is promoted by left end cap combined with it, and the rotary motion on few teeth difference external gear is transmitted out.
Internal gear described in the utility model and external gear constitute few teeth difference internal gear pair jointly, considerably increase contact ratio, are conducive to the bearing capacity improving retarder transmission device.General employing two panels internal gear, also can adopt the above internal gear of two panels.Internal-external gear pair adopts the structure such as straight-tooth, helical teeth, and flank profil adopts the profiles of tooth such as involute, circular arc, bicircular arcs, cycloidal pin teeth.
Planet pinion described in the utility model is secondary, and multiple planetary pinion realizes power dividing jointly, and meanwhile, this machine transmission is in the middle part of fewer differential teeth planetary axle, is conducive to improving the stressed of retarder entirety and transmission performance.Adopt two panels with upper planet wheel.Planetary pinion pair adopts the structure such as straight-tooth, helical teeth, and flank profil adopts the profiles of tooth such as involute, circular arc, bicircular arcs.
Planet wheel described in the utility model and eccentric shaft are integral type structure or fabricated construction, for reducing the alignment error between planet wheel and eccentric shaft, are conducive to the transmission accuracy that improve retarder transmission device.But be not limited to integral type, also can adopt fabricated construction.When external gear is even number sheet, adopt one group of planet wheel input, when external gear is odd number sheet, adopt two groups of planet wheel inputs.
Sun gear described in the utility model and input shaft are integral type structure or fabricated construction, for reducing the alignment error between sun gear and input shaft, are conducive to the transmission accuracy that improve retarder transmission device.But be not limited to integral type, also can adopt fabricated construction.
Described sun gear is meshed between adjacent two panels few teeth difference external gear with planet wheel.Furtherly, the planet wheel that sun gear described in the utility model is uniform with two or three is meshed; If sun gear counterclockwise rotates, drive two and planet wheel uniform are above also had rotation (clockwise direction) by sun gear while synchronized revolution (around sun gear axle center).
Described output shaft two end supports, wherein one end is arranged on left end cap.
Bearing is equipped with between the external gear of few teeth difference described in the utility model and eccentric shaft; Be equipped with bearing between housing and right end cap, between right end cap and eccentric shaft, be equipped with bearing; Be equipped with bearing between housing and left end cap, between left end cap and eccentric shaft, be equipped with bearing.
The beneficial effects of the utility model are as follows:
Compared with prior art, the gear transmission of the utility model employing one-level is distributed in the structure between secondary cycloidal-pin wheel, this structure can make structure compacter, be conducive to the axial dimension reducing retarder transmission device, and evenly share in the cycloid wheel of both sides due to input power, cycloid wheel and planetary wheeling mechanism is stressed more evenly, rationally, transmission is more steady, and avoid the outside harsh environments of one-level gear planet, increase the operating life of one-level gear planet; Sun gear is directly combined with eccentric shaft with input shaft and planet wheel simultaneously, greatly can reduce the alignment error between sun gear and planet wheel, is conducive to the driving error reducing retarder transmission device, improves MECHANISM PRECISION; Eccentric shaft adopts the form of two end supports, except avoiding inputting except the adverse effect of section cantilever, also contributes to the raising of integral rigidity.To sum up, it is more reasonable that the utility model has structure stress, and volume is little, the life-span is long, smooth running, kinematic accuracy are high, rigidity high.
Accompanying drawing explanation
Fig. 1 is retarder transmission structures schematic diagram of the present utility model.
Fig. 2 is the section of structure of housing.
Fig. 3 ~ Fig. 4 is the structural representation that internal gear adopts dissimilar tooth form.
Fig. 5 is the section of structure of few teeth difference external gear.
Fig. 6 ~ Fig. 7 is respectively the structural representation that few teeth difference external gear adopts dissimilar tooth form.
Fig. 8 ~ Fig. 9 be respectively even number and odd number sheet external gear time eccentric shaft structural representation.
The structural representation of input shaft when Figure 10 ~ Figure 11 is respectively even number and odd number sheet external gear.
Embodiment
The utility model is further described below with reference to embodiment's (accompanying drawing):
As shown in Figure 1, built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device of the present utility model comprises two-stage transmission: one-level is few tooth difference transmission mechanism, the facewidth comprising at least internal gear described in two panels few teeth difference external gear 5 and internal gear 6(is greater than the facewidth sum of at least two panels few teeth difference external gear) (see Fig. 3, 4, 5, 6, 7), and right end cap 8 and left end cap 9 constitute the planet carrier of few teeth difference transmission jointly, another grade is for being placed on the planetary gears in the middle part of gear mechanism housing 7, described planetary gears comprises sun gear 2 and at least two panels planet wheel 3, sun gear 2 in described planetary gears and planet wheel 3 are in housing 7 inside (shown in Figure 2) and sun gear 2 and planet wheel 3 are in the middle of adjacent two panels few teeth difference external gear 5 that (this structure is conducive to reducing the axial dimension of retarder transmission device, be conducive to two cycloid wheel and planet wheel is stressed more evenly, transmission is more steady, and avoid the outside harsh environments of one-level gear planet, increase the operating life of one-level gear planet), described planet wheel 3 combines with eccentric shaft 4, described sun gear 2 combines with input shaft 1, and output shaft 10 is arranged on left end cap 9, between the few teeth difference external gear 5 that every two panels is adjacent with phase difference 360o/n(n for external gear sheet number) set-up mode is hinged on eccentric shaft 4, and is meshed with internal gear 6, internal gear 6 is connected with housing 7, few teeth difference external gear 5 also will rotate backward while the revolution of internal gear 6 axis at its axis, output shaft 10 is promoted by left end cap 9 combined with it, and the rotary motion on few teeth difference external gear 5 is transmitted out by planet carrier.
More specifically: in order to reduce the alignment error between planet wheel and eccentric shaft, be conducive to the transmission accuracy that improve retarder transmission device, planet wheel 3 described in the utility model case and eccentric shaft 4 have employed integral structure (shown in Fig. 8,9).Also for ease of the alignment error reduced between sun gear and input shaft, be conducive to the transmission accuracy that improve retarder transmission device, sun gear 2 described in the utility model is same with input shaft 1 have employed integral structure (shown in Figure 10,11).But be not limited to integral structure, also can adopt assembling type.
Sun gear 2 described in the utility model is meshed with two and the uniform planet wheel 3 of two or more; If sun gear 2 rotates towards a direction, the uniform planet wheel 3 of drive is also had rotation (in the other direction direction) by sun gear 2 while synchronized revolution (around sun gear axle center).
Two few teeth difference external gears 5 in the utility model at a certain angle phase difference set-up mode are hinged on eccentric shaft 4, and are meshed with fixing internal gear 6, and internal gear 5 also will rotate counterclockwise while the revolution of external gear 6 axis at its axis; Output mechanism 10 is promoted by planet carrier (right end cap 8 and left end cap 9) combined with it, and the rotation vector on external gear 5 is transmitted out; Bearing is equipped with between described external gear 5 and eccentric shaft 4; Be equipped with bearing between housing 7 and right end cap 8, between right end cap 8 and eccentric shaft 4, be equipped with bearing; Be equipped with bearing between housing 7 and left end cap 9, between left end cap 9 and eccentric shaft 4, be equipped with bearing.
Working principle of the present utility model is:
Built-in planetary high rigidity gear with small teeth difference transmission device of the present utility model forms according to planetary drive with small teeth difference principle design, comprise few teeth difference external gear 5 and internal gear 6, the external gear gear ratio internal gear number of teeth is few, both constitute few teeth difference transmission jointly, in transmission process, the first order planetary mechanism input motion be in the middle part of retarder passes to external gear, if fixed annulus, external gear will produce the spinning motion contrary with input motion, and then passes to output mechanism.In like manner, output mechanism (left end cap planet carrier) also can be made to fix, the mode that internal gear exports.

Claims (6)

1. a built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device, described transmission device comprises two-stage transmission: one-level is few tooth difference transmission mechanism, comprise at least two panels few teeth difference external gear and internal gear, another grade is for being placed on the planetary gears in the middle part of gear mechanism housing, and described planetary gears comprises sun gear and at least two panels planet wheel; It is characterized in that: the sun gear in described planetary gears and planet wheel are in the middle of adjacent two panels few teeth difference external gear; Described planet wheel combines with eccentric shaft; Described sun gear combines with input shaft, and output shaft is arranged on left end cap; Be hinged on eccentric shaft with the set-up mode of phase difference 360o/n between the few teeth difference external gear that every two panels is adjacent, wherein n is external gear sheet number, and is meshed with internal gear, and internal gear is connected with housing; Few teeth difference external gear also will rotate backward while the revolution of internal gear axis at its axis; Output shaft is promoted by left end cap combined with it, and the rotary motion on few teeth difference external gear is transmitted out.
2. one according to claim 1 built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device, is characterized in that: described planet wheel and eccentric shaft are integral type structure or fabricated construction.
3. one according to claim 1 built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device, is characterized in that: described sun gear and input shaft are integral type structure or fabricated construction.
4. built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device according to claim 1, is characterized in that: described sun gear is meshed between adjacent two panels few teeth difference external gear with planet wheel.
5. one according to claim 1 built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device, is characterized in that: described output shaft two end supports, wherein one end is arranged on left end cap.
6. one according to claim 1 built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device, is characterized in that: be equipped with bearing between described few teeth difference external gear and eccentric shaft; Be equipped with bearing between housing and right end cap, between right end cap and eccentric shaft, be equipped with bearing; Be equipped with bearing between housing and left end cap, between left end cap and eccentric shaft, be equipped with bearing.
CN201420468166.1U 2014-08-19 2014-08-19 A kind of built-in Gear Planet Transmission high rigidity gear with small teeth difference transmission device Withdrawn - After Issue CN204127213U (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104154185A (en) * 2014-08-19 2014-11-19 郑州高端装备与信息产业技术研究院有限公司 Built-in planetary transmission high-rigidity small-tooth-difference gear transmission device
CN109139812A (en) * 2018-10-22 2019-01-04 中国船舶重工集团公司第七0七研究所 A kind of New-type cycloidal planetary reducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104154185A (en) * 2014-08-19 2014-11-19 郑州高端装备与信息产业技术研究院有限公司 Built-in planetary transmission high-rigidity small-tooth-difference gear transmission device
CN109139812A (en) * 2018-10-22 2019-01-04 中国船舶重工集团公司第七0七研究所 A kind of New-type cycloidal planetary reducer

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AV01 Patent right actively abandoned

Granted publication date: 20150128

Effective date of abandoning: 20160831

C25 Abandonment of patent right or utility model to avoid double patenting