CN202914642U - Speed changer with double counter shafts - Google Patents
Speed changer with double counter shafts Download PDFInfo
- Publication number
- CN202914642U CN202914642U CN 201220560079 CN201220560079U CN202914642U CN 202914642 U CN202914642 U CN 202914642U CN 201220560079 CN201220560079 CN 201220560079 CN 201220560079 U CN201220560079 U CN 201220560079U CN 202914642 U CN202914642 U CN 202914642U
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- Prior art keywords
- shaft
- main shaft
- gear
- jack
- counter shaft
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- Expired - Lifetime
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Abstract
The utility model provides a speed changer with double counter shafts. The speed changer with the double counter shafts comprises a main shaft and two counter shafts which are symmetrically arranged on two sides of the main shaft. Each counter shaft comprises a front section counter shaft and a back section counter shaft. The front end and the rear end of the front section counter shaft are supported on a separating wall of a speed changer shell body respectively through a counter shaft front bearing and a counter shaft middle section supporting bearing, the front end of the back section counter shaft is connected with the rear end of the front section counter shaft through a spline, and the rear end of the back section counter shaft is fixed on a back cover of a speed changer through a counter shaft rear end supporting bearing. According to the speed changer with the double counter shafts, each counter shaft is divided into the front section and the back section, the bearing support is adopted by the front counter shaft rear end, and the front end of the back counter shaft is matched with an inner spline of the rear end of the front counter shaft through an outer spline to transform torque so as to thoroughly solve the problem of insufficient deflection of each counter shaft. The torque of the speed changer is enabled to the larger than 1800 Nm, and first gear speed ratio is larger than 9. All gear shift slide sleeves are of a back taper structure, has self-locking function, and risk of gear shifting is greatly reduced.
Description
[technical field]
The utility model relates to automobile technical field, particularly a kind of automotive transmission.
[background technique]
Along with the development in domestic and international non-road vehicle market, very urgent to the demand of seven grades of high pulling torque speed changers.Domestic and international seven grades of serial speed changers are subjected to the impact of structure at present, and moment of torsion concentrates on below the 1600Nm mostly.This present situation has seriously restricted coupling and the application area of seven grades of serial speed changers, to the very large restriction of optimization generation of vehicle coupling.
For seven speed transmissions, be subjected to its structural constraint, jack shaft can not be long, otherwise can cause the jack shaft amount of deflection not enough; If the seven speed transmissions of design high pulling torque, large speed ratio, its jack shaft is inevitable longer.
Because the seven speed transmissions major applications is in non-road vehicle, so the failure mode such as lose rank often occurs, this use to whole vehicle has produced very large potential safety hazard.
Non-road vehicle in use is in the climb and fall state for a long time, this moment, speed changer was in heeling condition, the speed changer work meeting of tilting for a long time causes the faults such as speed changer interior section component lubrication state is abominable, speed changer heating, and this situation can cause that the speed changer inner components lost efficacy in advance, the speed changer life-span reduces greatly.
[model utility content]
The purpose of this utility model provides a kind of twin countershaft transmission, to solve the problems of the technologies described above.
To achieve these goals, the utility model adopts following technological scheme:
A kind of twin countershaft transmission comprises main shaft and two jack shafts that are symmetrically arranged in the main shaft both sides; Jack shaft comprises leading portion jack shaft and back segment jack shaft, leading portion jack shaft rear and front end is supported on the case of transmission by jack shaft fore bearing and jack shaft stage casing spring bearing respectively, back segment jack shaft front end and leading portion jack shaft rear end are by spline joint, and back segment jack shaft rear end is fixed on the speed changer bonnet by jack shaft rear end spring bearing.
The utility model further improves and is: back segment jack shaft rear end is connected with external lubricating pump by key; Speed changer inside is provided with some lubricant pipes, and lubricating pump connects described some lubricant pipes by cooler.
The utility model further improves and is: back segment jack shaft front end cooperates by the internal spline of external splines with leading portion jack shaft rear end.
The utility model further improves and is: the left side of main shaft is provided with input shaft, and the right-hand member of input shaft is connected with the input shaft actuation gear; Be disposed with from left to right main shaft six shift of gears, five grades of gears of main shaft, main shaft fourth gear, main shaft three-range transmission, main shaft intermediate gear, one grade of gear of main shaft and main shaft reverse gear on the main shaft; Between input shaft actuation gear and the main shaft six shift of gears, between five grades of gears of main shaft and the main shaft fourth gear, between main shaft three-range transmission and the main shaft intermediate gear, between one grade of gear of main shaft and the main shaft reverse gear, be respectively arranged with six or seven grades of sliding sleeves, four or five grades of sliding sleeves, two third gear sliding sleeves, a reverse gear sliding sleeve; Six or seven grades of sliding sleeves, four or five grades of sliding sleeves, two third gear sliding sleeves, reverse gear sliding sleeves are the tooth-like sliding sleeve of back taper.
The utility model further improves and is: the countershaft-gear that is fixed with the normal engagement of some with corresponding input shaft actuation gear, main shaft six shift of gears, five grades of gears of main shaft, main shaft fourth gear, main shaft three-range transmission, main shaft intermediate gear, one grade of gear of main shaft and main shaft reverse gear on the jack shaft.
With respect to prior art, the utlity model has following advantage:
1, the utility model is divided into two sections of front and back with jack shaft, taked bearings in front jack shaft rear end, the rear intermediate shaft front end cooperates with the internal spline of front jack shaft rear end by external splines and carries out the moment of torsion transmission, thereby has thoroughly solved the problem of jack shaft amount of deflection deficiency; So that the moment of torsion of the utility model speed changer is greater than 1800Nm, one grade of speed ratio is greater than 9.
2, seven speed transmissions gear shift sliding sleeve of the present utility model all adopts the teeth structure, has auto-lock function, greatly reduces the risk of losing rank.
3, the utility model has designed a kind of pressure lubrication and cooling system, add in speed changer rear intermediate shaft rear end and to have put external oil pump, be provided with lubricant pipe in speed changer inside, in the speed changer outside cooler has been installed, by external oil pump the lubricant oil of speed changer bottommost is delivered to cooler, lubricant oil is delivered to lubricant pipe after cooler cooling, then the lubricant oil splash is difficult to the component that obtain lubricating by splashing during to speed changer inclination work.By this lubricating and cooling system, can greatly strengthen the speed changer life-span.
[description of drawings]
Fig. 1 is structure diagram of the present utility model.
Wherein: 1, input shaft; 2, input shaft actuation gear; 3, jack shaft fore bearing; 4, jack shaft driving gear; 5, jack shaft six shift of gears; 6, counter 5th gear; 7, jack shaft fourth gear; 8, third-speed gear of intermediate shaft; 9, leading portion jack shaft; 10, jack shaft stage casing spring bearing; 11 reverse gear idle wheels; 12 back segment jack shafts; 13, jack shaft rear end spring bearing; 14, lubricating pump; 15 front-end of spindle bearings; 16, six or seven grades of sliding sleeves; 17, main shaft six shift of gears; 18, five grades of gears of main shaft; 19, four or five grades of sliding sleeves; 20, main shaft fourth gear; 21, main shaft three-range transmission; 22, two third gear sliding sleeves; 23, main shaft intermediate gear; One grade of gear of 24 main shafts; 25 1 reverse gear sliding sleeves; 26, main shaft reverse gear; 27, mainshaft rear bearing; 28, main shaft; 29, output flange.
[embodiment]
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
See also shown in Figure 1ly, a kind of twin countershaft transmission of the utility model is a single case (not being with odd-side), twin countershaft transmission; It comprises input shaft 1, main shaft 28 and the parallel two jack shafts that are arranged in main shaft 28 both sides.
Be provided with seven gears (17,18,20,21,23,24,26) on input shaft 1 right-hand member connection input shaft actuation gear 2, the main shaft, wherein 26 is the main shaft reverse gear, all the other are main shaft forward gears gear, between input shaft actuation gear 2 and the main shaft six shift of gears 17, between five grades of gears 18 of main shaft and the main shaft fourth gear 20, between main shaft three-range transmission 21 and the main shaft intermediate gear 23, between one grade of gear 24 of main shaft and the main shaft reverse gear 26, be respectively arranged with six or seven grades of sliding sleeves 16, four or five grades of sliding sleeves 19, two third gear sliding sleeves 22, a reverse gear sliding sleeve 25; Six or seven grades of sliding sleeves 16, four or five grades of sliding sleeves 19, two third gear sliding sleeves 22, reverse gear sliding sleeves 25 are the tooth-like sliding sleeve of back taper, and the tooth-like sliding sleeve of back taper top is equipped with the speed-changer operation device that each gear shift fork, declutch shift shaft and shifting block consist of; There is jack shaft and the countershaft-gear (5,6,7,8) of two symmetries main shaft 28 both sides, jack shaft is divided into leading portion jack shaft 9 and back segment jack shaft 12, leading portion jack shaft 9 front end and back end are supported on the transmission case partition wall by jack shaft fore bearing 3 and jack shaft stage casing spring bearing 10 respectively, back segment jack shaft 12 front ends cooperate by the internal spline of external splines with leading portion jack shaft 9 rear ends, and back segment jack shaft 12 rear ends are fixed on the speed changer bonnet by jack shaft rear end spring bearing 13; First gear on the jack shaft is jack shaft driving gear 4, and jack shaft driving gear 4 often meshes with input shaft actuation gear 2, and all the other gears of jack shaft often mesh with corresponding main shaft 28 each shifting gear; Input shaft 1, main shaft 28 by bearings on case of transmission and bonnet; Back segment jack shaft 12 rear ends are connected with external lubricating pump 14 by key.
A kind of twin countershaft transmission working procedure of the utility model: as shown in Figure 1, the power of motor is passed to input shaft 1 and the input shaft actuation gear 2 of speed changer by clutch; Input shaft actuation gear 2 often meshes with jack shaft driving gear 4, driving leading portion jack shaft 9 and back segment jack shaft 12 rotates simultaneously, other shifting gear 5,6,7 of jack shaft, 8 and jack shaft axle tooth often mesh with each shifting gear 17,18,20,21,23,24,26 of main shaft respectively, mainshaft gear dallies at main shaft.Because the tooth-like sliding sleeve internal tooth of back taper and main shaft pass through splined, and reverse shift fork straddles on the tooth-like sliding sleeve of each back taper, mobile sliding selector shaft drives reverse shift fork, the tooth-like sliding sleeve of back taper is mobile with shift fork, when the combining with the interior teeth of mainshaft gear in conjunction with teeth of the tooth-like sliding sleeve of back taper, main shaft just becomes one with mainshaft gear and rotates and transferring power by certain speed ratio.Back segment jack shaft 12 rear ends are connected with external lubricating pump 14 by key, during speed changer work, lubricating pump 14 drives by back segment jack shaft 12, with lubricant oil from the speed changer delivered inside to cooler, after the lubricant oil cooling is complete, be transported to inner each lubricant pipe of speed changer, then splash realizes lubricating the speed changer related components to each lubricating point.
Claims (5)
1. a twin countershaft transmission is characterized in that, comprises main shaft (28) and is symmetrically arranged in two jack shafts of main shaft (28) both sides; Jack shaft comprises leading portion jack shaft (9) and back segment jack shaft (12), leading portion jack shaft (9) rear and front end is supported on the case of transmission by jack shaft fore bearing (3) and jack shaft stage casing spring bearing (10) respectively, back segment jack shaft (12) front end and leading portion jack shaft (9) rear end are by spline joint, and back segment jack shaft (12) rear end is fixed on the speed changer bonnet by jack shaft rear end spring bearing (13).
2. a kind of twin countershaft transmission according to claim 1 is characterized in that, back segment jack shaft (12) rear end is connected with external lubricating pump (14) by key; Speed changer inside is provided with some lubricant pipes, and lubricating pump (14) connects described some lubricant pipes by cooler.
3. a kind of twin countershaft transmission according to claim 1 is characterized in that, back segment jack shaft (12) front end cooperates by the internal spline of external splines with leading portion jack shaft (9) rear end.
4. a kind of twin countershaft transmission according to claim 1 is characterized in that, the left side of main shaft (28) is provided with input shaft (1), and the right-hand member of input shaft (1) is connected with input shaft actuation gear (2); Be disposed with from left to right main shaft six shift of gears (17), five grades of gears of main shaft (18), main shaft fourth gear (20), main shaft three-range transmission (21), main shaft intermediate gear (23), one grade of gear of main shaft (24) and main shaft reverse gear (26) on the main shaft (28); Between input shaft actuation gear (2) and the main shaft six shift of gears (17), between five grades of gears of main shaft (18) and the main shaft fourth gear (20), between main shaft three-range transmission (21) and the main shaft intermediate gear (23), between one grade of gear of main shaft (24) and the main shaft reverse gear (26), be respectively arranged with six or seven grades of sliding sleeves (16), four or five grades of sliding sleeves (19), two third gear sliding sleeves (22), a reverse gear sliding sleeve (25); Six or seven grades of sliding sleeves (16), four or five grades of sliding sleeves (19), two third gear sliding sleeves (22), a reverse gear sliding sleeve (25) are the tooth-like sliding sleeve of back taper.
5. a kind of twin countershaft transmission according to claim 4, it is characterized in that, be fixed with the countershaft-gear of the normal engagement of some with corresponding input shaft actuation gear (2), main shaft six shift of gears (17), five grades of gears of main shaft (18), main shaft fourth gear (20), main shaft three-range transmission (21), main shaft intermediate gear (23), one grade of gear of main shaft (24) and main shaft reverse gear (26) on the jack shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560079 CN202914642U (en) | 2012-10-29 | 2012-10-29 | Speed changer with double counter shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560079 CN202914642U (en) | 2012-10-29 | 2012-10-29 | Speed changer with double counter shafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914642U true CN202914642U (en) | 2013-05-01 |
Family
ID=48162961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220560079 Expired - Lifetime CN202914642U (en) | 2012-10-29 | 2012-10-29 | Speed changer with double counter shafts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914642U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438194A (en) * | 2013-09-05 | 2013-12-11 | 韶关飞翔自动变速箱有限公司 | Method for applying single-intermediate-shaft speed changer structure to double-intermediate-shaft speed changer structure |
| CN104421409A (en) * | 2013-09-04 | 2015-03-18 | 本田技研工业株式会社 | Power transmission device for vehicles |
| CN104648118A (en) * | 2013-11-25 | 2015-05-27 | 本田技研工业株式会社 | Power transmission device |
| CN104728357A (en) * | 2015-03-25 | 2015-06-24 | 陕西法士特齿轮有限责任公司 | Seven-gear single-box three-countershaft transmission |
| CN105387149A (en) * | 2015-12-09 | 2016-03-09 | 陕西法士特齿轮有限责任公司 | Mine car speed changer |
| CN106678292A (en) * | 2017-03-17 | 2017-05-17 | 苏州绿控传动科技有限公司 | Double-motor driving system |
-
2012
- 2012-10-29 CN CN 201220560079 patent/CN202914642U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421409A (en) * | 2013-09-04 | 2015-03-18 | 本田技研工业株式会社 | Power transmission device for vehicles |
| CN104421409B (en) * | 2013-09-04 | 2017-04-12 | 本田技研工业株式会社 | Power transmission device for vehicles |
| CN103438194A (en) * | 2013-09-05 | 2013-12-11 | 韶关飞翔自动变速箱有限公司 | Method for applying single-intermediate-shaft speed changer structure to double-intermediate-shaft speed changer structure |
| CN104648118A (en) * | 2013-11-25 | 2015-05-27 | 本田技研工业株式会社 | Power transmission device |
| CN104728357A (en) * | 2015-03-25 | 2015-06-24 | 陕西法士特齿轮有限责任公司 | Seven-gear single-box three-countershaft transmission |
| CN105387149A (en) * | 2015-12-09 | 2016-03-09 | 陕西法士特齿轮有限责任公司 | Mine car speed changer |
| CN106678292A (en) * | 2017-03-17 | 2017-05-17 | 苏州绿控传动科技有限公司 | Double-motor driving system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |