CN102359572B - A kind of Double-row gap gear - Google Patents
A kind of Double-row gap gear Download PDFInfo
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- CN102359572B CN102359572B CN201110298685.9A CN201110298685A CN102359572B CN 102359572 B CN102359572 B CN 102359572B CN 201110298685 A CN201110298685 A CN 201110298685A CN 102359572 B CN102359572 B CN 102359572B
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Abstract
The invention discloses a kind of Double-row gap gear, comprise main tooth and be arranged on the left secondary tooth of main tooth both sides and right secondary tooth, left and right secondary tooth is located by locating stud and main tooth, the eccentric latch plate with pre compressed magnitude is equipped with between left and right secondary tooth and main tooth, installation shaft gap elastic component and the axle collar of disappearing successively respectively on main tooth outside left and right secondary tooth, and the axle gap elastic component that disappears has pre compressed magnitude.The present invention is cheap for manufacturing cost, and technique is simple, and vibration damping, noise reduction are obvious.
Description
Technical field
The present invention relates to a kind of gear, particularly relate to a kind of Double-row gap gear for motor car engine transmission system.
Background technique
Owing to being subject to the restriction of environmental regulation and the needs of market competition, motor is to high speed, efficient and low noise future development, add that the requirement of user to engine luggine and noise level improves constantly, make the vibration damping of motor and noise reduction become the important topic concerning China Automobile Industry.The source of engine luggine and noise mainly refers to the vibration that speed changer produces and the noise that power transmission system produces.Conventional engines gear train assembly is mode one to one, namely only has a pair gears meshing in the same way at driving gear, and gear backlash is large, cannot adjust, not high to whole transmission system transmission efficiency, and vibration, noise are large.The technology of conventional engines driving gear engagement noise reduction is mainly divided into following a few class:
1) in Gear Processing process, changing shaving technique is gear-grinding process, improves precise movements precision and the tooth-face roughness of gear, to reach noise reduction object.But gear noiose also affects by system accumulated error such as cylinder body, gear chamber cap bore system centre distance error and assembly error etc. simultaneously.And along with the accuracy of gear improves, cost of production also can significantly increase.
2) increase the rigidity of crucial gear, the vibration produced when reducing gears meshing, reaches noise reduction object.In order to increase the rigidity of gear, the volume of gear must be caused correspondingly to increase, the size of part with matching also will adjust, and this will be subject to the restriction of weight and assembly space, and the effectiveness in vibration suppression of this mode is also undesirable.
3) select the manufacture of materials gears such as magnesium iron, because magnesium iron itself has certain effectiveness in vibration suppression, be widely used on the part such as automobile crane, connecting rod.Magnesium iron is applied to making gear, quite high hardness must be made it have, its toughness certainly will be reduced, and in gear transmission process, gear will bear very large alternating shock load, and it can be made to lose efficacy soon, so selecting magnesium iron making high gear to carry out vibration and noise reducing is not preferred version.
4) on gear, add the damping material such as rubber, plastics, one is Surface damping treatment, and another kind adopts high damping material to make auto parts and components.By improving structural damping, suppressing resonance, improve structure anti-vibration reducing noise performance, and sound-insulating and heat-insulating effect, tried out on buses made in China at present.But its oil resistant, the working condition requirement that corrosion-resistant, resistance to high temperature can't meet motor car engine, and manufacturing process is also complicated.
Above-mentioned technology does not fundamentally solve the vibration & noise that gear transmission produces, and also there is high cost, many by restraining factors, the shortcomings such as Noise Reduction is not obvious, can not fundamentally stress release treatment.Therefore, solve, study technique to the development of Domestic Automotive Industry and rapid development, its significance is self-evident.
Summary of the invention
Object of the present invention is exactly the difficult point overcoming above-mentioned prior art, provides a kind of Double-row gap gear, effectively can reduce motor car engine gear train assembly noise.
Object of the present invention is realized by following technical proposals:
A kind of Double-row gap gear, comprise main tooth and be arranged on the left secondary tooth of main tooth both sides and right secondary tooth, left and right secondary tooth is located by locating stud and main tooth, the eccentric latch plate with pre compressed magnitude is equipped with between left and right secondary tooth and main tooth, installation shaft gap elastic component and the axle collar of disappearing successively respectively on main tooth outside left and right secondary tooth, and the axle gap elastic component that disappears has pre compressed magnitude.Eccentric latch plate has rational pre compressed magnitude, makes gear coordinate tight mesh, reduce noise during work by the effect of elastic force.Double-row gap gear eliminates simultaneously and to match two gear backlash of transmission with main tooth, and the axle gap elastic component that disappears adopts ripple spring simultaneously, eliminates the axial clearance on secondary tooth.
Further, described eccentric latch plate is a notched annulus, the inside and outside center of circle decentraction of annulus.Eccentric latch plate can eliminate the gap of constantly change in Meshing Process of Spur Gear effectively, ensures the coupling between latch plate moment of torsion and subtended angle.
Further, described axle is a spring ring with the gap elastic component that disappears, and the bi-side of this spring ring are corrugated surface.
Further, the bi-side of described axle collar are plane.
Axle disappear gap elastic component and axle collar effectively can eliminate the axial clearance between left and right secondary tooth and main tooth, avoid producing new noise source.
Further, described locating stud adopts alloyed steel to make.General employing 35, No. 45 steel, due in use, locating stud needs repeatedly stressed, so require that alignment pin should have good wear resistance, therefore, we can select better material GCr15 or T10A.
Further, the root chamfering radius of described main tooth is 0.5-1mm, avoids stress to concentrate, and ensures that main tooth has enough bearing strengths.
Beneficial effect of the present invention is: cheap for manufacturing cost, and technique is simple, and vibration damping, noise reduction are obvious.
Accompanying drawing explanation
Fig. 1 is decomposition texture schematic diagram of the present invention;
Fig. 2 is composite structure schematic diagram of the present invention;
When Fig. 3 is noise test, test point chooses schematic diagram;
Fig. 4 is motor head noise vs figure;
Fig. 5 is engine rear end noise vs figure.
Embodiment
As depicted in figs. 1 and 2, a kind of Double-row gap gear, comprise main tooth 1 and be arranged on the left secondary tooth 3 of main tooth 1 both sides and right secondary tooth 2, left and right secondary tooth 3,2 is located by locating stud 4 and main tooth 1, the eccentric latch plate 5 with pre compressed magnitude is equipped with between left and right secondary tooth 3,2 and main tooth 1, installation shaft gap elastic component 7 and the axle collar 6 of disappearing successively respectively on main tooth 1 outside left and right secondary tooth 3,2, and the axle gap elastic component 7 that disappears has pre compressed magnitude.
Described eccentric latch plate 5 is a notched annulus, the inside and outside center of circle decentraction of annulus.Eccentric latch plate 5 can eliminate the gap of constantly change in Meshing Process of Spur Gear effectively, ensures the coupling between latch plate moment of torsion and subtended angle.
Described axle is a spring ring with the gap elastic component 7 that disappears, and the bi-side of this spring ring are corrugated surface.The bi-side of described axle collar 6 are plane.Axle disappear gap elastic component 7 and axle collar 6 effectively can eliminate the axial clearance between left and right secondary tooth 3,2 and main tooth 1, avoid producing new noise source.
Described locating stud is adopted 4 and is made with alloyed steel.General employing 35, No. 45 steel, due in use, locating stud 4 needs repeatedly stressed, so require that locating stud 4 has good wear resistance and intensity, therefore, we can select better material GCr15 or T10A.
The root chamfering radius of described main tooth 1 is 0.5-1mm, avoids stress to concentrate, and ensures that main tooth 1 has enough bearing strengths.
As shown in Figure 3, in order to verify noise reduction of the present invention further, adopting engineering 9 methods to carry out noise test, comparison engine adopting respectively the different situations of noise when existing clearance elimination gear, helical gear, Double-row gap gear.
Test oil: 0# diesel oil 15W/40 machine oil
Process of the test temperature controls:
Fuel oil temperature (38 ± 3) DEG C
In cold rear intake temperature rated power point (49 ± 2) DEG C, other point do not control
Water-exit temperature (88 ± 5) DEG C
Motor connecting means:
1) motor is arranged in semianechoic room, and engine output end is connected with power measurer by the major axis of carbon fibre material, and power measurer is arranged on outside anechoic room.
2) the attached sound-absorbing material in surrounding's wall surface of anechoic room, in anechoic room, Background noise is for being less than 30dB (A).
3) in process of the test, air-strainer is contained in outside anechoic room, receives engine supercharger suction port with flexible pipe.
4) in process of the test, engine exhaust steel pipe guides to outdoor by underground, and fixes a silencer, and sound insulation wrapped up by steel tube surface asbestos.
5) anechoic room noise circumstance correction value K meets the requirements (i.e. K=0).
Adopt existing gear, engine noise test data is as follows:
Adopt helical gear, engine noise test data is as follows:
Adopt Double-row gap gear, engine noise test data is as follows:
As shown in Figure 4 and Figure 5 and above-mentioned test data show, motor use Double-row gap gear of the present invention compared to use existing gear and helical gear can be larger the noise of minimizing motor.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a Double-row gap gear, comprise main tooth and be arranged on the left secondary tooth of main tooth both sides and right secondary tooth, left and right secondary tooth is located by locating stud and main tooth, the eccentric latch plate with pre compressed magnitude is equipped with between left and right secondary tooth and main tooth, installation shaft gap elastic component and the axle collar of disappearing successively respectively on main tooth outside left and right secondary tooth, and the axle gap elastic component that disappears has pre compressed magnitude, it is characterized in that: described eccentric latch plate is a notched annulus, the inside and outside center of circle decentraction of annulus.
2. Double-row gap gear according to claim 1, is characterized in that: described axle is a spring ring with the gap elastic component that disappears, and the bi-side of this spring ring are corrugated surface.
3. Double-row gap gear according to claim 1, is characterized in that: the bi-side of described axle collar are plane.
4. Double-row gap gear according to claim 1, is characterized in that: described locating stud adopts alloyed steel to make.
5. Double-row gap gear according to claim 1, is characterized in that: the root chamfering radius of described main tooth is 0.5-1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110298685.9A CN102359572B (en) | 2011-09-28 | 2011-09-28 | A kind of Double-row gap gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110298685.9A CN102359572B (en) | 2011-09-28 | 2011-09-28 | A kind of Double-row gap gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102359572A CN102359572A (en) | 2012-02-22 |
| CN102359572B true CN102359572B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110298685.9A Active CN102359572B (en) | 2011-09-28 | 2011-09-28 | A kind of Double-row gap gear |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133645A (en) * | 2013-03-01 | 2013-06-05 | 江苏保捷锻压有限公司 | Antirust high-speed rotating gear |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3319718B2 (en) * | 1998-03-19 | 2002-09-03 | 本田技研工業株式会社 | Gear noise prevention device |
| CN2520435Y (en) * | 2001-12-25 | 2002-11-13 | 大连创新齿轮箱制造有限公司 | Backlash-less engaging gear |
| CN2830796Y (en) * | 2005-08-05 | 2006-10-25 | 江门联和发动机有限公司 | Combined balance shaft bearing |
| CN1730983A (en) * | 2005-08-05 | 2006-02-08 | 江门联和发动机有限公司 | A kind of combined balance shaft gear |
| CN101038025A (en) * | 2006-03-16 | 2007-09-19 | 光阳工业股份有限公司 | Noise preventing device of balance gear of crank |
| CN201236937Y (en) * | 2008-07-04 | 2009-05-13 | 吕清波 | Gear combination capable of reducing gear transmission noise |
| DE102008050471A1 (en) * | 2008-10-04 | 2010-04-08 | Thyssenkrupp Presta Teccenter Ag | Divided gear |
| JP4942721B2 (en) * | 2008-10-10 | 2012-05-30 | 株式会社椿本チエイン | Toothed belt pulley |
| CN201297368Y (en) * | 2008-12-19 | 2009-08-26 | 哈尔滨太阳岛船艇科技开发有限责任公司 | Combined special metallic gear used for ship |
| CN101598212B (en) * | 2009-07-06 | 2011-04-20 | 西华大学 | Mechanism for automatically eliminating gear backlash |
| CN201687915U (en) * | 2010-04-26 | 2010-12-29 | 江门天钇金属工业有限公司 | Balance gear for motorcycle engine |
| CN202251819U (en) * | 2011-09-28 | 2012-05-30 | 四川省眉山市东升齿轮有限公司 | Double-row gap gear |
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- 2011-09-28 CN CN201110298685.9A patent/CN102359572B/en active Active
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| CN102359572A (en) | 2012-02-22 |
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