CN105065636A - Transmission overdrive gear shaft system device - Google Patents
Transmission overdrive gear shaft system device Download PDFInfo
- Publication number
- CN105065636A CN105065636A CN201510458142.7A CN201510458142A CN105065636A CN 105065636 A CN105065636 A CN 105065636A CN 201510458142 A CN201510458142 A CN 201510458142A CN 105065636 A CN105065636 A CN 105065636A
- Authority
- CN
- China
- Prior art keywords
- overgear
- overdrive
- system device
- gear
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16H57/0018—Shaft assemblies for gearings
-
- 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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
A transmission overdrive gear shaft system device comprises an overdrive driven gear and a matched shaft, wherein the overdrive driven gear and the matched shaft are in clearance fit; a tooth-shaped lubricating groove is formed in the matched shaft; in the work process, oil enters the lubricating groove through oil holes, so that the overdrive driven gear is suspended on the matched shaft. Lubrication of a transmission overdrive gear shaft system can be effectively achieved, working noise is lowered, the number of parts is reduced, the driving comfort of a whole car is improved, and the transmission overdrive noise is reduced to 86 db from 91 db.
Description
Technical field
What the present invention relates to is a kind of technology of automotive transmission field, specifically a kind of transmission overdrive geared rotor system device.
Background technique
The speed changer in current commercial car (light card, light passenger train, middle card etc.) field generally adopts longitudinal speed changer, and carry out motivational drive by diesel engine, under the good condition of operating mode, as in high speed/high-grade highway situation, overgear is often used to drive.Cooperation between the overgear gear of in the past traditional longitudinal speed changer inside and tooth axle adopts the design of needle bearing assembling to carry out, and can bring the problems such as noise is large, causes the uncomfortable of driver and environment.
Through finding the retrieval of prior art, Chinese patent literature CN203926722U, day for announcing 2014.11.5, disclose a kind of mechanism increasing gear lubrication, reduce friction, comprise the synchronizer be sleeved on successively on two axles, two axle overgear gears and two axles three and keep off gear, two axles three keep off gear and are arranged on two axles by needle bearing, and two axle overgear direct geareds are sleeved on two axles, form sliding friction pair; Two axle overgear gears offer the oilhole that increase by two axle overgear gear and two between centers lubricate; Offer the appearance oil groove increasing and lubricate, reduce simultaneously area of contact between two described axle overgear gears and two axles, hold oil groove and communicate with oilhole.But this technology still applies needle bearing, oil groove increase lubrication is held though have, but noise source still exists, noise reduction is limited, in order to the problem of ablation can occur the axle solving overgear gear and cooperation, this technology is solved by the mode opening oilhole at overgear gear, the axle of corresponding cooperation opens lubrication groove.
Summary of the invention
The present invention is directed to prior art above shortcomings, a kind of transmission overdrive geared rotor system device is proposed, by by overgear passive tooth and fitted shaft Spielpassung, fitted shaft relevant position has lubrication groove, overgear passive tooth is made to be in state of suspension, instead of the mode of original a kind of direct contact, effectively can eliminate hypervelocity gear tooth and needle bearing, noise source between needle bearing and fitted shaft, and have passed the noise checking of speed changer stand and the examination of car load road, noise is reduced to present 86db (decibel) by original 91db (decibel).
The present invention is achieved by the following technical solutions:
The present invention includes: overgear passive tooth and fitted shaft, wherein: overgear passive tooth and fitted shaft Spielpassung.
The gap of described Spielpassung is 0.05 ~ 0.08mm.
Described fitted shaft is provided with the lubrication groove of thread shape.
Described lubrication groove is profile of tooth groove.
By above-mentioned measure, overgear driven tooth can be suspended on the axle of cooperation by the gear oil of lubrication, stress release treatment source.
Technique effect
Compared with prior art, overgear passive tooth is carried out closely spaced cooperation with output shaft corresponding site (fitted shaft) by the present invention, adopt the principle of gear oil suspension overgear gear, eliminate the noise source between prior art middle gear and needle bearing, between needle bearing and fitted shaft, cancel needle bearing part simultaneously, the diameter of axle of overgear passive tooth fitted shaft can be strengthened, improve the rigidity of axle, reduce the winding degree of axle, and then improve the flexural strength of overgear gear pair, further improve the Endurance life of this shift gear pair.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is overgear passive tooth aperture size and tolerance design schematic diagram;
Fig. 3 is fitted shaft aperture size and tolerance design schematic diagram;
Fig. 4 is lubrication groove size design 3D schematic diagram, and (a) is axial cross-sectional view, and (b) is the detailed drawing after figure (a) amplifies by 5:1;
In figure: 1 is overgear passive tooth, 2 is fitted shaft, and 3 is oilhole, and 4 is lubrication groove.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, the present embodiment comprises: overgear passive tooth 1 and fitted shaft 2, wherein: overgear passive tooth 1 coordinates with fitted shaft 2 small―gap suture, driven tooth can be made to be suspended high speed rotating by gear oil.
The gap that described small―gap suture coordinates is 0.05 ~ 0.08mm.
Described fitted shaft 2 is the part that output shaft coordinates with overgear passive tooth 1.
Described fitted shaft 2 is provided with lubrication groove 4.
Described overgear passive tooth 1 internal surface is provided with the oilhole 3 be connected with lubrication groove 4.
As shown in Figures 2 and 3, described fitted shaft diameter is 37.5mm, and tolerance is 0.015mm.
As shown in Figure 4, described lubrication groove 4 is profile of tooth groove.
Described lubrication groove 4 number of teeth is 19 teeth, and left hand screw angle is 22 °.
Described lubrication groove 4 end-tooth outside diameter circle is 35.5mm, and root diameter is 2.7mm, and tooth depth R is 0.5mm, and profile of tooth sectional shape is triangle.
The tooth of described lubrication groove 4 and the angle of fitted shaft 2 are 45 °.
During the work of overgear, oil product enters lubrication groove 4 by oilhole 3 and is full of, and makes to be suspended in fitted shaft 2 with the overgear passive tooth 1 of fitted shaft 2 Spielpassung, and overgear passive tooth 1 does not produce with fitted shaft 2 and directly contacts.
Through the noise testing of speed changer stand, the transmission assembly noise reduction 5dB of the more traditional needle bearing fit system of the present embodiment.Gap between overgear gear and fitted shaft is 0.05 ~ 0.08mm, get the gap maximum 0.08mm and minimum value 0.05mm coordinated respectively to verify, the noise testing of this gear of prior art is 91db (decibel), and the noise testing of this gear of the present invention is 86db (decibel).
The size of the present embodiment effectively can to ensure that under the prerequisite reducing noise overgear passive tooth 1 and fitted shaft 2 can not ablations; available protecting overgear passive tooth 1 and fitted shaft 2; effectively can strengthen the diameter of axle of overgear passive tooth 1 while making overgear passive tooth 1 suspend simultaneously; improve rigidity; reduce winding degree, and then improve the flexural strength of this device.
Compared with prior art, this device is coordinated, by lubricant oil suspension overgear gear by small―gap suture, the lubrication groove of definite shape is outputed between fitted shaft and overgear gear while removing needle bearing (overgear gear suspends and lubricates), reach axle is provided rigidity, winding degree, overgear gear pair flexural strength, and noise when further reducing the engagement of this gear pair.With in prior art with compared with the structure of needle bearing, the test noise of stand and Shi Zhong overgear, car load road is 91db (decibel); And the test noise of stand of the present invention and Shi Zhong overgear, car load road is 86db (decibel), contrast prior art reduces 5db (decibel), and noise reduction is comparatively obvious.
Claims (6)
1. a transmission overdrive geared rotor system device, is characterized in that, comprising: overgear passive tooth and fitted shaft, wherein: overgear passive tooth and fitted shaft Spielpassung.
2. transmission overdrive geared rotor system device according to claim 1, is characterized in that, the gap of described Spielpassung is 0.05 ~ 0.08mm.
3. transmission overdrive geared rotor system device according to claim 1 and 2, it is characterized in that, described fitted shaft is provided with lubrication groove.
4. transmission overdrive geared rotor system device according to claim 3, is characterized in that, described lubrication groove is profile of tooth groove.
5. the transmission overdrive geared rotor system device according to claim 3 or 4, it is characterized in that, the described lubrication groove number of teeth is 19 teeth, left hand screw angle is 22 °.
6. transmission overdrive geared rotor system device according to claim 5, is characterized in that, the tooth of described lubrication groove and the angle of described fitted shaft are 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510458142.7A CN105065636A (en) | 2015-07-30 | 2015-07-30 | Transmission overdrive gear shaft system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510458142.7A CN105065636A (en) | 2015-07-30 | 2015-07-30 | Transmission overdrive gear shaft system device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105065636A true CN105065636A (en) | 2015-11-18 |
Family
ID=54495088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510458142.7A Pending CN105065636A (en) | 2015-07-30 | 2015-07-30 | Transmission overdrive gear shaft system device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105065636A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736557A (en) * | 2016-03-18 | 2016-07-06 | 重庆长安汽车股份有限公司 | Idling matched structure of gear and shaft of manual transmission |
| CN109882578A (en) * | 2019-03-29 | 2019-06-14 | 重庆青山工业有限责任公司 | The input shaft assembly of two grades of electric gear shift(ing)s |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10259859A (en) * | 1997-03-19 | 1998-09-29 | Kubota Corp | Gear transmission device for tractor |
| CN201925449U (en) * | 2010-12-24 | 2011-08-10 | 杭州杰牌传动科技有限公司 | Load balancing mechanism of planetary reducer |
| US20130225353A1 (en) * | 2012-02-23 | 2013-08-29 | Snecma | Device for lubricating an epicycloidal reduction gear |
| CN103883681A (en) * | 2014-03-22 | 2014-06-25 | 浙江海天机械有限公司 | Improvement in planet final drive of tractor |
| CN203926722U (en) * | 2014-06-20 | 2014-11-05 | 陕西法士特齿轮有限责任公司 | A kind of mechanism that increases gear lubrication, reduces friction |
| CN204921914U (en) * | 2015-07-30 | 2015-12-30 | 上海汽车变速器有限公司 | Derailleur overgear gear shafting device |
-
2015
- 2015-07-30 CN CN201510458142.7A patent/CN105065636A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10259859A (en) * | 1997-03-19 | 1998-09-29 | Kubota Corp | Gear transmission device for tractor |
| CN201925449U (en) * | 2010-12-24 | 2011-08-10 | 杭州杰牌传动科技有限公司 | Load balancing mechanism of planetary reducer |
| US20130225353A1 (en) * | 2012-02-23 | 2013-08-29 | Snecma | Device for lubricating an epicycloidal reduction gear |
| CN103883681A (en) * | 2014-03-22 | 2014-06-25 | 浙江海天机械有限公司 | Improvement in planet final drive of tractor |
| CN203926722U (en) * | 2014-06-20 | 2014-11-05 | 陕西法士特齿轮有限责任公司 | A kind of mechanism that increases gear lubrication, reduces friction |
| CN204921914U (en) * | 2015-07-30 | 2015-12-30 | 上海汽车变速器有限公司 | Derailleur overgear gear shafting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736557A (en) * | 2016-03-18 | 2016-07-06 | 重庆长安汽车股份有限公司 | Idling matched structure of gear and shaft of manual transmission |
| CN109882578A (en) * | 2019-03-29 | 2019-06-14 | 重庆青山工业有限责任公司 | The input shaft assembly of two grades of electric gear shift(ing)s |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |