CN102252081A - Parallel gears - Google Patents
Parallel gears Download PDFInfo
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- CN102252081A CN102252081A CN2011102017319A CN201110201731A CN102252081A CN 102252081 A CN102252081 A CN 102252081A CN 2011102017319 A CN2011102017319 A CN 2011102017319A CN 201110201731 A CN201110201731 A CN 201110201731A CN 102252081 A CN102252081 A CN 102252081A
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- gear
- unbalance loading
- gears
- planet wheel
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Abstract
The invention relates to parallel gears which consist of more than two parallel gears (1) arranged in the tooth width direction, and the diameters, moduli, number of teeth, pitches of gears, gear profiles and the gear heights of more than two gears are same. Through the parallel gears provided by the invention, the unbalance loading of the gears is reduced prominently, the bearing capability of the gear is improved, the scale effect of gear material is reduced, and the uniformity and comprehensive mechanical property of the gear material are reduced; and when the parallel gears are applied to planetary wheels of a planetary speed reducer, the unbalance loading of the planetary wheels can be reduced prominently, the bearing capability of the planetary wheels can be improved, the transmission power intensity of the planetary speed reducer is improved, and the stability and reliability of the operation of the planetary speed reducer are enhanced.
Description
Technical field
The present invention relates to a kind of combination gear, also relate to a kind of planet wheel in parallel of planetary reducer, belong to the mechanical parts technical field.
Background technique
The load that gear bears in transmission process is uneven along the distribution of facewidth direction, promptly there is the unbalance loading phenomenon, cause gear also inhomogeneous along the stress distribution of facewidth direction, maximum stress value is positioned at the end that gear at first enters engagement, and the stress value minimum of the other end, and the gear width is big more, and the unbalance loading phenomenon is serious more.The end that the unbalance loading phenomenon causes gear particularly at first to enter engagement easily produces structural damage, and crackle even broken teeth phenomenon take place, and greatly reduces the bearing capacity of gear, also is one of major reason that causes gear failure.
Have now in the design of gears to reducing the unbalance loading phenomenon, generally the slenderness ratio with gear is designed to smaller value, promptly reduce the unbalance loading phenomenon by reducing the gear width, but gear width itself is less, and be subjected to the restriction of structure assembling and bearing capacity, size changes very limited, and is very limited too to the effect that reduces the unbalance loading phenomenon, thereby reduces the unbalance loading phenomenon that the gear width can not fundamentally solve gear.
Gear is widely used in the various machineries as a kind of basic mechanical parts.Planetary reducer also is a kind of machinery based on gear structure, a kind of retarder of forming by planet wheel, sun gear, planet carrier, gear ring, have that volume is little, transmission efficiency is high, the precision advantages of higher, be widely used in light, in, in the heavy-duty drive system, realize reducing rotating speed, increase function such as moment of torsion.Planetary reducer is in the heavy load transmission process, and planet wheel easily produces bigger unbalance loading phenomenon, causes planetary gear structure to produce and destroys.On the other hand, in order to improve the transmitted power density of planetary reducer, heavily loaded Gear Planet Transmission all adopts the hard flank of tooth, and the greatest problem of the hard flank of tooth is the unbalance loading phenomenon more responsive, in case serious unbalance loading takes place, the serious consequence that will cause gear tooth breakage, retarder to lose efficacy.Also often find heavily loaded planetary reducer planet wheel generation unbalance loading type broken teeth phenomenon, the serious consequence that causes retarder to lose efficacy in the practice.
Summary of the invention
The unbalance loading phenomenon takes place for overcoming existing gear in the present invention easily, cause gear structure to destroy, gear failure, influence the gear bearing capacity, and planetary reducer is because the shortcomings and deficiencies that the unbalance loading phenomenon causes planetary reducer to lose efficacy easily take place in planet wheel, a kind of combination gear is provided, significantly improved the unbalance loading phenomenon of gear, effectively improve the bearing capacity of gear, and reduce the scale effect of gear material, improve the uniformity and the comprehensive mechanical property of gear material, be applied on the planet wheel of planetary reducer, can significantly reduce the unbalance loading phenomenon of planet wheel, prevent that planetary reducer lost efficacy.
The present invention for the technological scheme that the technical solution problem adopts is:
A kind of combination gear, described combination gear is made of along facewidth direction side by side plural gear, and the diameter of described plural gear, modulus, the number of teeth, tooth pitch, profile of tooth, tooth depth are identical.
A kind of combination gear, the facewidth of described plural gear equates.
A kind of combination gear, described gear are 2.
A kind of planet wheel in parallel of planetary reducer, described planet wheel in parallel is made of along facewidth direction side by side plural gear, and the diameter of described plural gear, modulus, the number of teeth, tooth pitch, profile of tooth, tooth depth are identical.
A kind of planet wheel in parallel of planetary reducer, the facewidth of described plural gear equates.
A kind of planet wheel in parallel of planetary reducer, described gear are 2.
Compared with prior art, characteristics of the present invention are:
1. the combination gear structure adopts plural Gear combination to form, the facewidth of single gear is significantly reduced, under the prerequisite that does not change gear overall structure size, the even amplitude of unbalanced stress that unbalance loading is caused reduces more than 70%, significantly reduced the unbalance loading phenomenon of gear, prevent that effectively unbalance loading from causing the serious consequence of gear structure destruction, gear failure, significantly improved the bearing capacity of gear.
2. the plural gear of combination gear structure is in Synchronous Transmission, contacted end face forms certain supporting effect and constraint to gear between the gear, can reduce that gear takes place under eccentric load reverse, bending deflection, and the stress distribution uneven phenomenon of consequent gear, further reduce the inhomogeneous amplitude of the stress distribution that Basis of Gear Deviation Load causes.
3. the single gear width in the combination gear structure significantly reduces, and has effectively improved the scale effect of gear, reduces the smart quick property of the heat treatment of gear in the metal heat treatmet process, has strengthened the uniformity of gear interior tissue, improves the comprehensive mechanical property of gear.
4. the combination gear structure applications can effectively reduce the unbalance loading phenomenon of planet wheel on the planet wheel of planetary reducer, prevents that the retarder that the unbalance loading phenomenon causes lost efficacy, and significantly improved the working life of planetary reducer.
5. the interior tissue of combination gear structure is even, the material comprehensive mechanical property is good, be applied on the planet wheel of planetary reducer, can effectively improve retarder transmission power density, reduce the volume and weight of retarder, and strengthen retarder operation stationarity and reliability.
The combination gear structural design simple, be skillfully constructed, easily manufactured, with low cost, the comprehensive benefit height.
Description of drawings
Fig. 1 is the structural representation of existing gear.
Fig. 2 is the stress distribution schematic representation of existing gear.
Fig. 3 is the structural representation of combination gear of the present invention.
Fig. 4 is the stress distribution schematic representation of combination gear of the present invention.
Among the figure: gear 1.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, existing gear structure is made of a gear 1, and gear is very inhomogeneous along the stress distribution of facewidth direction, produce serious unbalance loading phenomenon, gear at first enters the stress maximum of an end of engagement, the stress minimum of the corresponding the other end, and stress is linear distribution.The gear stress distribution is inhomogeneous, gear structure can only design according to maximum stress value, cause structure waste, cost to increase, and when gear caused that owing to reasons such as assembly error, overloads load and unbalance loading increase, stress maximum value place was very easily because the unbalance loading that increases causes structural damage, gear failure.
Referring to Fig. 3, combination gear provided by the invention is made of along facewidth direction side by side plural gear 1, and the diameter of plural gear 1, modulus, the number of teeth, tooth pitch, profile of tooth, tooth depth are identical.The integrated during fabrication processing of plural gear 1, promptly with same clamping device, process simultaneously, in full accord to guarantee its meshing performance and gear mechanical property according to identical Processing Curve.Plural gear 1 is formed gear side by side, except that contacting, end face do not have other connection between the adjacent gear 1, because plural gear 1 is because its meshing performance and gear mechanical property are in full accord, thereby can rotate fully synchronously, be equivalent to an overall gear structure when transmission.
Referring to Fig. 4, combination gear is made up of a plurality of gears 1, the width of single gear 1 significantly reduces, thereby its stress difference along facewidth direction also significantly reduces, the gear integrated stress distributes and is tending towards even, under the immovable prerequisite of gear overall dimensions, significantly reduced the Basis of Gear Deviation Load phenomenon, effectively prevent structural damage and gear failure that Basis of Gear Deviation Load causes.On the other hand, the plural gear of combination gear structure is in Synchronous Transmission, contacted end face forms certain supporting effect and constraint to gear between the gear, can reduce that gear takes place under eccentric load reverse, bending deflection, and the stress distribution uneven phenomenon of consequent gear, further reduce the inhomogeneous amplitude of the stress distribution that Basis of Gear Deviation Load causes.
Through test, adopt combination gear structure provided by the invention, the even amplitude of the unbalanced stress that its Basis of Gear Deviation Load causes can reduce more than 70% the technique effect highly significant.
Combination gear structure provided by the invention, the width of single gear 1 significantly reduces, and can also effectively improve the scale effect of gear, reduces the smart quick property of the heat treatment of gear in the metal heat treatmet process, strengthen the uniformity of gear interior tissue, improved the comprehensive mechanical property of gear.
Combination gear provided by the invention, the facewidth of plural gear 1 can equate or be unequal, but for ease of standardized production, reduce production costs, and make strength of gear more balanced, gear operation is more steady, and the facewidth of preferably plural gear 1 is set to equate.The quantity of gear 1 can be set to 2～4, but preferably is set to 2, more gear 1 is set can causes the facewidth too small, is not easy to the processing and the assembling of gear, makes single gear 1 easily produce unstable failure simultaneously and the problem that descends with bearing capacity.
Combination gear provided by the invention can be applied to the planet wheel of planetary reducer.Unbalance loading very easily appears in the planet wheel of planetary reducer on width direction, cause planet wheel to crack even structural damage such as broken teeth, the serious consequence that causes retarder to lose efficacy.Use the planet wheel of combination gear provided by the invention, can effectively reduce the unbalance loading phenomenon of planet wheel, prevent that the retarder that the unbalance loading phenomenon causes lost efficacy, and significantly improved the working life of planetary reducer as planetary reducer.Combination gear structure provided by the invention, because the facewidth reduces, effectively reduce the scale effect of gear, reduce the smart quick property of the heat treatment of gear in the metal heat treatmet process, strengthen the interior tissue uniformity and the material comprehensive mechanical property of gear material, be applied on the planet wheel of planetary reducer, can effectively improve retarder transmission power density, reduce the volume and weight of retarder, and strengthen retarder operation stationarity and reliability.
Below in conjunction with the accompanying drawings embodiments of the invention are specified, but the present invention is not limited to the foregoing description, in the ken that those of ordinary skills possessed, can also makes various variations not breaking away under the aim prerequisite of the present invention.
Claims (6)
1. combination gear, it is characterized in that: described combination gear is made of along facewidth direction side by side plural gear (1), and diameter, modulus, the number of teeth, tooth pitch, profile of tooth, the tooth depth of described plural gear (1) are identical.
2. a kind of combination gear according to claim 1 is characterized in that: the facewidth of described plural gear (1) equates.
3. a kind of combination gear according to claim 1 and 2 is characterized in that: described gear (1) is 2.
4. the planet wheel in parallel of a planetary reducer, it is characterized in that: described planet wheel in parallel is made of along facewidth direction side by side plural gear (1), and diameter, modulus, the number of teeth, tooth pitch, profile of tooth, the tooth depth of described plural gear (1) are identical.
5. the planet wheel in parallel of a kind of planetary reducer according to claim 4 is characterized in that: the facewidth of described plural gear (1) equates.
6. according to the planet wheel in parallel of claim 4 or 5 described a kind of planetary reducers, it is characterized in that: described gear (1) is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102017319A CN102252081A (en) | 2011-07-19 | 2011-07-19 | Parallel gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102017319A CN102252081A (en) | 2011-07-19 | 2011-07-19 | Parallel gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102252081A true CN102252081A (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102017319A Pending CN102252081A (en) | 2011-07-19 | 2011-07-19 | Parallel gears |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975219A (en) * | 2011-08-22 | 2014-08-06 | 罗伯特·博世有限公司 | Steering angle sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205752U (en) * | 1985-12-14 | 1987-02-25 | 许武智 | Differential gear self-locking planetary reductor |
| JPH0473454A (en) * | 1990-07-13 | 1992-03-09 | Sumitomo Bakelite Co Ltd | Gear and gear transmission device |
| CN201125999Y (en) * | 2007-12-18 | 2008-10-01 | 陈福建 | Gear |
| CN101696722A (en) * | 2006-07-24 | 2010-04-21 | 黄振强 | Overlapped gear with wide teeth and manufacturing method |
| CN101793308A (en) * | 2010-01-28 | 2010-08-04 | 湖北博创机械制造有限责任公司 | Double helical tooth planetary speed reducer |
| CN202251808U (en) * | 2011-07-19 | 2012-05-30 | 湖北行星传动设备有限公司 | Parallel planet wheel of parallel gear and planet speed reducer |
-
2011
- 2011-07-19 CN CN2011102017319A patent/CN102252081A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205752U (en) * | 1985-12-14 | 1987-02-25 | 许武智 | Differential gear self-locking planetary reductor |
| JPH0473454A (en) * | 1990-07-13 | 1992-03-09 | Sumitomo Bakelite Co Ltd | Gear and gear transmission device |
| CN101696722A (en) * | 2006-07-24 | 2010-04-21 | 黄振强 | Overlapped gear with wide teeth and manufacturing method |
| CN201125999Y (en) * | 2007-12-18 | 2008-10-01 | 陈福建 | Gear |
| CN101793308A (en) * | 2010-01-28 | 2010-08-04 | 湖北博创机械制造有限责任公司 | Double helical tooth planetary speed reducer |
| CN202251808U (en) * | 2011-07-19 | 2012-05-30 | 湖北行星传动设备有限公司 | Parallel planet wheel of parallel gear and planet speed reducer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975219A (en) * | 2011-08-22 | 2014-08-06 | 罗伯特·博世有限公司 | Steering angle sensor |
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Application publication date: 20111123 |