CN102878272B - A kind of support structure of reverse counter shaft of transmission - Google Patents
A kind of support structure of reverse counter shaft of transmission Download PDFInfo
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- CN102878272B CN102878272B CN201210366218.XA CN201210366218A CN102878272B CN 102878272 B CN102878272 B CN 102878272B CN 201210366218 A CN201210366218 A CN 201210366218A CN 102878272 B CN102878272 B CN 102878272B
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- jack shaft
- reverse gear
- odd
- transmission
- hole
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Abstract
The invention provides a kind of support structure of reverse counter shaft of transmission, comprise case of transmission, partition wall and boss; Case of transmission, partition wall and boss are integral type structure; Partition wall is near being provided with reverse gear idle wheel installing space between speed changer main tank side and boss; Partition wall is provided with the second reverse gear jack shaft supported hole and the odd-side jack shaft supported hole of decentraction; Boss is supported on case of transmission near case of transmission side by some muscle, is provided with disc between described some muscle.A kind of support structure of reverse counter shaft of transmission of the present invention, utilize many muscle to support reverse gear jack shaft boss, cast out reverse gear jack shaft boss feature until on rear odd-side partition wall, in conjunction with machining, reverse gear idle wheel space is milled out with wire rod quality, under the prerequisite ensureing good casting manufacturability, effectively prevent at casing bi-side casting window, improve shell-machining process, save window cover plate, liner, the parts such as bolt, effectively reduce leakage of oil fault point.
Description
[technical field]
The present invention relates to automotive transmission technical field, particularly a kind of support structure of reverse counter shaft of transmission.
[background technique]
Heavy-duty automotive speed changer is various informative, and many gears heavy-duty automotive speed changer is main mainly with major-minor case composite structure, and the two intermediate shaft structure of major-minor case is the more typical structure in current heavy-duty automotive speed changer field.In this kind of structure, on rear odd-side partition wall cross section, main tank reverse gear jack shaft rear support hole is in odd-side jack shaft fore bearing region, cause reverse gear jack shaft rear support unsettled, reverse gear jack shaft is many reverse gear jack shaft boss is located in casing by a nut check in cantilevered fashion, and this kind of location needs in advance reverse gear countershaft-gear assembly and case of transmission to be assembled into an assembly.For the speed changer of cartridge type main tank structure, helical teeth, once reverse gear countershaft-gear is fixed, in main tank, jack shaft will be difficult to load.
The location of odd-side jack shaft fore bearing is also very important, prior art is many to be come to odd-side jack shaft axially locating by loading onto reverse gear cup after reverse gear countershaft-gear, this kind of orientation type reverse gear jack shaft is cantilever type, and in the speed changer of cartridge type main tank structure, helical teeth, assemble difficulty very large or cannot assemble.
What reduce discharging along with national energy-saving carries forward vigorously, and automotive light weight technology is also imperative, and speed changer lightweight is the very important part of automotive light weight technology, and mission case adopts aluminum alloy lightweight to be also the inexorable trend of development.Residing for reverse gear countershaft-gear, space forms back-off at box house, for ensureing the feasibility of casting, the general windowing of reverse gear countershaft-gear place body side, but casing bi-side windowing reduces more obvious to case of transmission intensity, rigidity, processed complex, add oil leakage fault point, affect speed changer beautiful shape simultaneously.
[summary of the invention]
The object of this invention is to provide a kind of support structure of reverse counter shaft of transmission, to solve the problems of the technologies described above.
To achieve these goals, the present invention adopts following technological scheme:
A kind of support structure of reverse counter shaft of transmission, comprises case of transmission, partition wall and boss; Case of transmission, partition wall and boss are integral type structure; Partition wall is near being provided with reverse gear idle wheel installing space between speed changer main tank side and boss; Partition wall is provided with reverse gear jack shaft rear support hole and the odd-side jack shaft supported hole of decentraction.
The present invention further improves and is: boss is supported on case of transmission near case of transmission side by some muscle, is provided with the first disc or the second disc between described some muscle.
The present invention further improves and is: boss is provided with identical with reverse gear jack shaft rear support bore dia and the coaxial reverse gear jack shaft front support hole arranged.
The present invention further improves and is: described case of transmission is aluminum alloy die casting, and the cylindrical body that reverse gear idle wheel installing space is protruded out towards main tank direction at partition wall by wire rod quality vertically mills out.
The present invention further improves and is: be supported in reverse gear jack shaft front support hole and reverse gear jack shaft rear support hole before and after reverse gear jack shaft respectively; The odd-side jack shaft fore bearing of odd-side jack shaft is installed in odd-side jack shaft supported hole; Reverse gear jack shaft front support is provided with front step in hole, and reverse gear jack shaft is between the front step and the front-end face of odd-side jack shaft in reverse gear jack shaft front support hole; Reverse gear jack shaft is provided with the reverse gear idle wheel being positioned at reverse gear idle wheel installing space, between reverse gear idle wheel and reverse gear jack shaft, has needle bearing, between reverse gear idle wheel and boss, have dottle pin.
The present invention further improves and is: the step that reverse gear jack shaft rear support hole and odd-side jack shaft supported hole are formed provides location for odd-side jack shaft fore bearing, and then spacing odd-side jack shaft; On partition wall, in region folded by odd-side jack shaft supported hole and the second reverse gear jack shaft supported hole, be provided with two cast through holes of through disc and partition wall, for dismantling odd-side jack shaft fore bearing.
The present invention further improves and is: on axis projection direction, reverse gear jack shaft rear support bore portion or completely in odd-side jack shaft supported hole.
The present invention further improves and is: on reverse gear jack shaft rear support hole and the partition wall of odd-side jack shaft supported hole all between main tank and rear odd-side.
The present invention further improves and is: reverse gear jack shaft rear support hole is via hole.
Relative to prior art, the present invention has the following advantages: a kind of support structure of reverse counter shaft of transmission of the present invention, many muscle are utilized to support reverse gear jack shaft boss, before and after idle wheel position, both sides arrange dislocation disc, cast out reverse gear jack shaft boss feature until on rear odd-side partition wall, in conjunction with machining, reverse gear idle wheel space is milled out with wire rod quality, under the prerequisite ensureing good casting manufacturability, effectively prevent at casing bi-side casting window, improve shell-machining process, save window cover plate, liner, the parts such as bolt, effectively reduce leakage of oil fault point, reverse gear jack shaft two ends support by boss, support stiffness is good.
[accompanying drawing explanation]
Fig. 1 a is case of transmission reverse gear idle wheel district front elevation;
Fig. 1 b is the sectional view along X-X line in Fig. 1 a;
Fig. 2 is the sectional view along S-S line in Fig. 1, i.e. case of transmission reverse gear idle wheel place sectional view;
Fig. 3 is that reverse gear idle wheel and odd-side jack shaft assemble schematic diagram;
Fig. 4 is the structural representation of cylindrical body 102 before milling reverse gear idle wheel installing space J;
Fig. 5 is reverse gear countershaft-gear installation place housing partial perspective view;
Fig. 6 is reverse gear wheel installation place front elevation;
Fig. 7 is reverse gear wheel installation place rear view.
[embodiment]
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Refer to shown in Fig. 1 to Fig. 7, a kind of support structure of reverse counter shaft of transmission of the present invention, for aluminium alloy compression casting forms, comprises tubular case of transmission 100, has the partition wall 101 separating speed changer main tank and odd-side in case of transmission 100; Partition wall 101 has protruded out cylindrical body 102 towards main tank direction, and this cylindrical body 102 is supported on case of transmission 100 by multiple muscle a near case of transmission 100 side.For strengthening the intensity of reverse gear idle wheel 1 and reverse gear jack shaft 2 support place, between the muscle a without disc, add arc stiffening rib a1 in Fig. 1.
Before and after reverse gear idle wheel 1 position both sides multiple muscle a between dislocation disc b or c (playing invigoration effect) is set, after the complete case of transmission of die casting, in conjunction with machining, reverse gear idle wheel installing space J is vertically milled out at cylindrical body 102 with wire rod quality, under the prerequisite ensureing good casting manufacturability, effectively prevent at casing bi-side casting window.The front side of reverse gear idle wheel installing space J forms reverse gear idle wheel boss Q, and rear side is partition wall 101.
Partition wall 101 is provided with the little step hole in large front end, rear end, and the diameter being positioned at the second reverse gear jack shaft supported hole K2 of front side is less than the diameter of the odd-side jack shaft supported hole K of rear side; " step hole " front end reverse gear jack shaft metapore K2 formed is as reverse gear jack shaft rear support, and the step between large aperture is to odd-side jack shaft fore bearing axially locating.Second reverse gear jack shaft supported hole K2 and odd-side jack shaft supported hole K eccentric setting.Reverse gear idle wheel boss Q is provided with identical with the second reverse gear jack shaft supported hole K2 diameter and coaxial the first reverse gear jack shaft supported hole K1 arranged.
The front and back of reverse gear jack shaft support and axially locating: be supported on respectively before and after reverse gear jack shaft 2 in first reverse gear jack shaft supported hole K1 and the second reverse gear jack shaft supported hole K2, be provided with the odd-side jack shaft fore bearing 5 of odd-side jack shaft 6 in odd-side jack shaft supported hole K.The diameter of reverse gear idle wheel installing space J is greater than the diameter of the first reverse gear jack shaft supported hole K1 and the second reverse gear jack shaft supported hole K2, and reverse gear idle wheel installing space J and the step between the first reverse gear jack shaft supported hole K1 and the second reverse gear jack shaft supported hole K2 are reverse gear idle wheel 1 axially locating; When reverse gear hung by speed changer, reverse gear idle wheel 1 is dextrorotation, and reverse gear jack shaft 2 is forward stressed, by the first reverse gear jack shaft supported hole K1 front step axially locating; When reverse gear do not hung by speed changer, by the random play backward of front-end face restriction reverse gear jack shaft 2 of odd-side jack shaft 6.
Odd-side jack shaft fore bearing 5 axially locating: odd-side jack shaft supported hole K and the second reverse gear jack shaft supported hole K2 forms step hole, when altering before odd-side jack shaft fore bearing 5, the step axially locating be made up of hole K and hole K2.
Claims (8)
1. a support structure of reverse counter shaft of transmission, is characterized in that, comprises case of transmission (100), partition wall (101) and boss (Q); Case of transmission (100), partition wall (101) and boss (Q) are integral type structure; Partition wall (101) is near being provided with reverse gear idle wheel installing space (J) between speed changer main tank side and boss (Q); Partition wall (101) is provided with reverse gear jack shaft rear support hole (K2) and the odd-side jack shaft supported hole (K) of decentraction; The diameter being positioned at the reverse gear jack shaft rear support hole (K2) of front side is less than the diameter of the odd-side jack shaft supported hole (K) of rear side; Reverse gear jack shaft rear support hole (K2) and odd-side jack shaft supported hole (K) form step hole; The step that reverse gear jack shaft rear support hole (K2) and odd-side jack shaft supported hole (K) are formed is that odd-side jack shaft fore bearing (5) provides location, and then spacing odd-side jack shaft (6); Boss (Q) is provided with the coaxial reverse gear jack shaft front support hole (K1) arranged with reverse gear jack shaft rear support hole (K2); Be supported in reverse gear jack shaft front support hole (K1) and reverse gear jack shaft rear support hole (K2) respectively before and after reverse gear jack shaft (2); Reverse gear idle wheel installing space (J) is that the cylindrical body (102) that protrudes out towards main tank direction at partition wall (101) processes.
2. a kind of support structure of reverse counter shaft of transmission according to claim 1, it is characterized in that, boss (Q) is supported on case of transmission (100) near case of transmission (100) side by some muscle (a), arranges the first disc (b) and second disc (c) of dislocation between described some muscle (a).
3. a kind of support structure of reverse counter shaft of transmission according to claim 1, is characterized in that, described case of transmission (100) is aluminum alloy die casting.
4. a kind of support structure of reverse counter shaft of transmission according to claim 2, is characterized in that, is provided with the odd-side jack shaft fore bearing (5) of odd-side jack shaft (6) in odd-side jack shaft supported hole (K); Be provided with front step in reverse gear jack shaft front support hole (K1), reverse gear jack shaft (2) is positioned between the front step in reverse gear jack shaft front support hole (K1) and the front-end face of odd-side jack shaft (6); Reverse gear jack shaft (2) is provided with the reverse gear idle wheel (1) being positioned at reverse gear idle wheel installing space (J), there is needle bearing (3) between reverse gear idle wheel (1) and reverse gear jack shaft (2), between reverse gear idle wheel (1) and boss (Q), have dottle pin (4).
5. a kind of support structure of reverse counter shaft of transmission according to claim 4, it is characterized in that, on partition wall (101), odd-side jack shaft supported hole (K) is with in folded region, reverse gear jack shaft rear support hole (K2), be provided with two cast through holes (T) of through disc and partition wall (101), for dismantling odd-side jack shaft fore bearing (5).
6. a kind of support structure of reverse counter shaft of transmission according to claim 1, is characterized in that, on axis projection direction, reverse gear jack shaft rear support hole (K2) is partly or completely in odd-side jack shaft supported hole (K).
7. a kind of support structure of reverse counter shaft of transmission according to claim 1, it is characterized in that, on reverse gear jack shaft rear support hole (K2) and odd-side jack shaft supported hole (K) partition wall all between main tank and odd-side (101).
8. a kind of support structure of reverse counter shaft of transmission according to claim 1, is characterized in that, reverse gear jack shaft rear support hole (K2) is via hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210366218.XA CN102878272B (en) | 2012-09-27 | 2012-09-27 | A kind of support structure of reverse counter shaft of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210366218.XA CN102878272B (en) | 2012-09-27 | 2012-09-27 | A kind of support structure of reverse counter shaft of transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878272A CN102878272A (en) | 2013-01-16 |
| CN102878272B true CN102878272B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210366218.XA Active CN102878272B (en) | 2012-09-27 | 2012-09-27 | A kind of support structure of reverse counter shaft of transmission |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202946651U (en) * | 2012-09-27 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | Reverse gear intermediate shaft supporting structure of transmission |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108363A (en) * | 1993-11-23 | 1995-09-13 | 易通公司 | Idler gear mounting arrangement |
| CN201215174Y (en) * | 2008-07-07 | 2009-04-01 | 浙江万里扬变速器股份有限公司 | Automobile speed variator of major-minor box conjuncted structure |
| CN201215175Y (en) * | 2008-07-07 | 2009-04-01 | 浙江万里扬变速器股份有限公司 | Automobile speed variator of major-minor box conjuncted structure |
| EP2108862A1 (en) * | 2008-04-08 | 2009-10-14 | Toyota Jidosha Kabushiki Kaisha | Gear case and gear shaft mounting method |
| CN201339686Y (en) * | 2009-01-21 | 2009-11-04 | 浙江长泰机械有限公司 | Light car speed changer with main tank and auxiliary tank |
| CN202946651U (en) * | 2012-09-27 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | Reverse gear intermediate shaft supporting structure of transmission |
-
2012
- 2012-09-27 CN CN201210366218.XA patent/CN102878272B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108363A (en) * | 1993-11-23 | 1995-09-13 | 易通公司 | Idler gear mounting arrangement |
| EP2108862A1 (en) * | 2008-04-08 | 2009-10-14 | Toyota Jidosha Kabushiki Kaisha | Gear case and gear shaft mounting method |
| CN201215174Y (en) * | 2008-07-07 | 2009-04-01 | 浙江万里扬变速器股份有限公司 | Automobile speed variator of major-minor box conjuncted structure |
| CN201215175Y (en) * | 2008-07-07 | 2009-04-01 | 浙江万里扬变速器股份有限公司 | Automobile speed variator of major-minor box conjuncted structure |
| CN201339686Y (en) * | 2009-01-21 | 2009-11-04 | 浙江长泰机械有限公司 | Light car speed changer with main tank and auxiliary tank |
| CN202946651U (en) * | 2012-09-27 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | Reverse gear intermediate shaft supporting structure of transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102878272A (en) | 2013-01-16 |
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