CN112081882A - Eight-gear small-torque transmission - Google Patents
Eight-gear small-torque transmission Download PDFInfo
- Publication number
- CN112081882A CN112081882A CN202010981257.5A CN202010981257A CN112081882A CN 112081882 A CN112081882 A CN 112081882A CN 202010981257 A CN202010981257 A CN 202010981257A CN 112081882 A CN112081882 A CN 112081882A
- Authority
- CN
- China
- Prior art keywords
- main
- shaft
- gear
- box
- main box
- 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
Links
Images
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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
-
- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/032—Gearboxes; Mounting gearing therein characterised by the materials used
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
- F16H2061/308—Modular hydraulic shift units, i.e. preassembled actuator units for select and shift movements adapted for being mounted on transmission casing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention provides an eight-gear small-torque transmission which comprises a transmission shell, wherein a four-gear main box and a two-gear auxiliary box are arranged in the transmission shell; the main box comprises an input shaft, a main box main shaft and a main box intermediate shaft; the auxiliary box comprises an auxiliary box driving gear, an auxiliary box main shaft and an auxiliary box intermediate shaft; the connecting line of the main box main shaft and the main box intermediate shaft and the connecting line of the auxiliary box main shaft and the auxiliary box intermediate shaft are arranged in an included angle, and a bearing connected with the rear end of the main box intermediate shaft and a bearing connected with the front end of the auxiliary box intermediate shaft are positioned on the same cross section; the transmission shell is an aluminum alloy die casting; all the gears adopt full helical gears. The speed changer has strong bearing capacity, small overall dimension and light weight, and meets the mainstream requirements of the current blue card light truck.
Description
Technical Field
The invention relates to a transmission, in particular to an eight-gear small-torque transmission.
Background
The urban vehicle with the conventional load of 5-7 t in the country in 2019 is influenced by a blue light truck event: 1. the weighing of vehicles is more strict, and the original configured vehicle type cannot meet the quality requirement of the blue board bulletin due to overweight; 2. the yellow-brand vehicles are limited in the driving road section and the delivery time in the vast area, and cannot meet the timeliness requirement of daily urban vehicle allocation; 3. the driver license is required to be upgraded when the yellow-card car is purchased, the operation license is required to be handled on the road, the operation cost can be correspondingly increased on the insurance and violation handling of the whole car, and the low-cost operation requirement of urban transportation and distribution cannot be met. Therefore, the compliance blue-plate vehicle model still meets the rigid requirements of the users, and the users tend to buy the compliance blue-plate vehicle model capable of carrying 5-7 t.
At present, in the domestic light truck market, a single-intermediate-shaft single-box transmission with 5 gears and 6 gears is taken as a main transmission, the speed ratio of a first gear is limited by a structure and cannot reach more than 10, and the requirements of light dead weight and heavy goods loading of a vehicle cannot be met simultaneously. The combined transmission with 556HF single-intermediate-shaft main and auxiliary boxes has a head gear speed ratio of 12.7, but the self weight of the transmission is 206kg, and the gears of the auxiliary boxes need to be stopped and shifted in gear switching, so that the combined transmission is very inconvenient and poor in user experience.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an eight-gear small-torque transmission which is strong in bearing capacity, small in overall dimension and light in weight, and aims to meet the weighing and licensing requirements of the blue-brand vehicle in the light-weight market at present and solve the problems of small output torque and high self weight of the existing light-weight transmission.
The invention is realized by the following technical scheme:
an eight-gear small-torque transmission comprises a transmission shell, wherein a main box and an auxiliary box are arranged in the transmission shell;
the main box comprises an input shaft, a main box main shaft and a main box intermediate shaft; an input gear is arranged on the input shaft; a main box main shaft first gear wheel, a main box main shaft second gear wheel, a main box main shaft third gear wheel and a main box main shaft reverse gear wheel are arranged on a main box main shaft, a main box middle shaft transmission gear and a main box middle shaft first gear wheel, a main box middle shaft second gear wheel, a main box middle shaft third gear wheel and a main box middle shaft reverse gear wheel are arranged on a main box middle shaft, the main box middle shaft transmission gear is meshed with an input gear, and the main box middle shaft first gear wheel, the main box middle shaft second gear wheel, the main box middle shaft third gear wheel and the main box middle shaft reverse gear wheel are respectively meshed with a main box main shaft first gear wheel, a main box main shaft second gear wheel, a main box main shaft third gear wheel and a main box main shaft reverse gear wheel in a one-to;
the auxiliary box comprises an auxiliary box driving gear, an auxiliary box main shaft and an auxiliary box intermediate shaft; the auxiliary box driving gear is connected to the rear end of the main box main shaft; an auxiliary box reduction gear is arranged on the auxiliary box main shaft; an auxiliary box intermediate shaft transmission gear and an auxiliary box intermediate shaft low-gear are mounted on an auxiliary box intermediate shaft, the auxiliary box intermediate shaft transmission gear is meshed with an auxiliary box driving gear, and the auxiliary box intermediate shaft low-gear is meshed with an auxiliary box reduction gear;
the connecting line of the main box main shaft and the main box intermediate shaft and the connecting line of the auxiliary box main shaft and the auxiliary box intermediate shaft are arranged in an included angle, and a bearing connected with the rear end of the main box intermediate shaft and a bearing connected with the front end of the auxiliary box intermediate shaft are positioned on the same cross section; the transmission shell is an aluminum alloy die casting; all the gears adopt full helical gears.
Preferably, needle roller bearings are respectively arranged between the main box main shaft and the main box main shaft first catch wheel, the main box main shaft second catch wheel, the main box main shaft third catch wheel and the main box main shaft reverse catch wheel.
Preferably, a first synchronizer is arranged between the first gear wheel of the main box main shaft and the second gear wheel of the main box main shaft, a second synchronizer is arranged between the third gear wheel of the main box main shaft and the input gear, and a reverse gear sliding sleeve is arranged at the front end of the reverse gear wheel of the main box main shaft.
Preferably, the gearbox also comprises an intermediate wheel shaft, wherein a reverse gear intermediate wheel is arranged on the intermediate wheel shaft, and the reverse gear intermediate wheel is respectively meshed with a reverse gear wheel of a main box intermediate shaft and a reverse gear wheel of a main box main shaft; and a needle bearing is arranged between the reverse gear intermediate wheel and the intermediate wheel shaft.
Preferably, a sub-tank synchronizer is installed between the sub-tank driving gear and the sub-tank reduction gear.
Furthermore, an auxiliary box shifting fork and an auxiliary box cylinder are arranged above the auxiliary box synchronizer, and the auxiliary box shifting fork is connected with a piston of the auxiliary box cylinder.
Preferably, the auxiliary box intermediate shaft transmission gear and the auxiliary box intermediate shaft low-gear are integrally formed.
Preferably, the transmission housing includes a front housing a, a middle housing B and a rear housing C; the input shaft is connected to the front shell A through a bearing; the front end of the main shaft of the main box is connected with the input shaft through a bearing, and the rear end of the main shaft of the main box is connected to the middle shell B through a bearing; the front end of the main box intermediate shaft is connected to the front shell A through a bearing, and the rear end of the main box intermediate shaft is connected to the middle shell B through a bearing; the front end of the main shaft of the auxiliary box is connected with the driving gear 31 of the auxiliary box through a bearing, and the rear end of the main shaft of the auxiliary box is connected with the rear shell C through a bearing; the front end of the auxiliary box intermediate shaft is connected to the middle shell B through a bearing, and the rear end of the auxiliary box intermediate shaft is connected to the rear shell C through a bearing.
Preferably, the rear end of the main box main shaft and the auxiliary box driving gear are positioned by a spigot and connected by a spline.
Compared with the prior art, the invention has the following beneficial technical effects:
the transmission comprises a main box and an auxiliary box, wherein the main box and the auxiliary box both adopt a single-intermediate-shaft structure, so that the overall dimension of the transmission and the self weight of the transmission can be reduced; the connecting line of the main box main shaft and the main box intermediate shaft and the connecting line of the auxiliary box main shaft and the auxiliary box intermediate shaft are arranged at a certain included angle, namely the main box and the auxiliary box are arranged at the included angle, so that a bearing at the rear end of the main box intermediate shaft and a bearing at the front end of the auxiliary box intermediate shaft can be overlapped on the same cross section, the whole axial size of the transmission is small, the whole vehicle arrangement is facilitated, and the weight is reduced; the transmission shell is completely made by an aluminum alloy die casting process, so that the weight of the transmission is light, and the weight of the whole box is less than 90 Kg; all gears in the speed changer adopt helical gears, so that high bearing capacity and low noise of the speed changer are ensured; according to the transmission with the auxiliary box, the speed ratio of the first gear of the transmission can be more than 10 easily realized through the gear doubling function of the auxiliary box. The speed changer has strong bearing capacity, small overall dimension and light weight, further reduces the whole vehicle mass of the light truck, and meets the mainstream requirements of the current blue light truck.
Furthermore, except for reverse gear, other gears of the transmission are shifted by adopting synchronizers, so that good shifting performance of the transmission is guaranteed.
Furthermore, the function of the cylinder body of the auxiliary box is integrated in the auxiliary box, the arrangement of the auxiliary box is more compact, and the size and the mass of the transmission can be reduced.
Furthermore, the rear end of the main shaft of the main box is connected with the driving gear of the auxiliary box in a mode of spigot positioning and spline torque transmission, so that the meshing stability of the driving gear of the auxiliary box and the transmission gear of the intermediate shaft of the auxiliary box is ensured.
Furthermore, the auxiliary box intermediate shaft (34), the auxiliary box intermediate shaft transmission gear and the auxiliary box intermediate shaft low-gear are designed in an integrated mode, welding processes are reduced, the types of parts are few, and reliability is high.
Drawings
FIG. 1 is a schematic diagram of the arrangement of the included angle between the main box and the auxiliary box (seen from the rear end to the front end) of the 8-gear low-torque transmission of the invention.
FIG. 2 is a cross-sectional view (A-A cross-sectional view in FIG. 1) of an 8-speed, low torque transmission according to the present invention.
FIG. 3 is a cross-sectional view (B-B cross-sectional view in FIG. 1) of an 8-speed low torque transmission according to the present invention.
In the figure: the transmission device comprises an input shaft 1, a main box main shaft 10, a main box intermediate shaft 20, an intermediate shaft 25, a main box main shaft first catch wheel 13, a main box main shaft second catch wheel 12, a main box main shaft third catch wheel 11, a main box main shaft reverse catch wheel 14, a first needle bearing 18, a first synchronizer 16, a second synchronizer 15, a reverse catch sliding sleeve 17, a main box intermediate shaft transmission gear 21, a main box intermediate shaft third catch gear 22, a reverse catch intermediate wheel 23, a second needle bearing 24, an auxiliary box driving gear 31, an auxiliary box main shaft 30, an auxiliary box intermediate shaft 34, an auxiliary box reduction gear 32, an auxiliary box synchronizer 33, a flange 35, an auxiliary box shifting fork 40, an auxiliary box cylinder 42 and a piston 41.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.
The 8-gear small-torque transmission comprises a main box and an auxiliary box, wherein the main box is a four-gear main transmission, and the auxiliary box is a two-gear auxiliary transmission. As shown in fig. 2, the transmission case of the present invention is divided into front, middle and rear three sections (corresponding to front case a, middle case B and rear case C in fig. 2), and has a "cartridge" structure.
As shown in fig. 2, the main box comprises an input shaft 1, a main box main shaft 10, a main box intermediate shaft 20 and an idler shaft 25. An input gear is mounted on the input shaft 1. A first main box main shaft blocking wheel 13, a second main box main shaft blocking wheel 12, a third main box main shaft blocking wheel 11 and a main box main shaft reverse blocking wheel 14 are installed on the main box main shaft 10, and first needle bearings 18 are respectively arranged between the main box main shaft 10 and the first main box main shaft blocking wheel 13, between the second main box main shaft blocking wheel 12, between the third main box main shaft blocking wheel 11 and between the main box main shaft reverse blocking wheel 14. A short-stroke first synchronizer 16 is arranged between the first main box main shaft catch wheel 13 and the second main box main shaft catch wheel 12, a short-stroke second synchronizer 15 is arranged between the third main box main shaft catch wheel 11 and the input gear, and a reverse gear sliding sleeve 17 is arranged at the front end of the reverse gear wheel 14 of the main box main shaft.
As shown in fig. 2, a main box intermediate shaft transmission gear 21, a main box intermediate shaft first gear, a main box intermediate shaft second gear, a main box intermediate shaft third gear 22 and a main box intermediate shaft reverse gear are mounted on the main box intermediate shaft 20, and the main box intermediate shaft transmission gear 21, the main box intermediate shaft first gear, the main box intermediate shaft second gear, the main box intermediate shaft third gear 22 and the main box intermediate shaft reverse gear are constantly engaged with the input gear, the main box main shaft first gear 13, the main box main shaft second gear 12, the main box main shaft third gear 11 and the main box main shaft reverse gear 14, respectively.
As shown in fig. 3, the intermediate gear shaft 25 is provided with a reverse gear intermediate gear 23, a second needle bearing 24 is arranged between the reverse gear intermediate gear 23 and the intermediate gear shaft 25, and the reverse gear intermediate gear 23 is simultaneously meshed with the main box intermediate shaft reverse gear and the main box main shaft reverse gear 14 respectively.
As shown in fig. 2, the sub-tank includes a sub-tank drive gear 31, a sub-tank main shaft 30, and a sub-tank intermediate shaft 34. The sub-tank drive gear 31 is splined to the rear end of the main tank main shaft 10. An auxiliary box reduction gear 32 is mounted on the auxiliary box main shaft 30, an auxiliary box synchronizer 33 is mounted between the auxiliary box driving gear 31 and the auxiliary box reduction gear 32, a needle bearing is arranged between the auxiliary box reduction gear 32 and the auxiliary box main shaft 30, and the output end of the auxiliary box main shaft 30 is connected with a flange 35. An auxiliary box shifting fork 40 and an auxiliary box cylinder 42 are arranged above the auxiliary box synchronizer 33, and the auxiliary box shifting fork 40 is connected with a piston 41 of the auxiliary box cylinder 42. The invention integrates the function of the auxiliary box cylinder body on the rear shell of the transmission, the arrangement of the auxiliary box is more compact, and the size and the mass of the transmission are reduced.
As shown in fig. 3, a range intermediate shaft drive gear and a range intermediate shaft low gear are mounted on the range intermediate shaft 34, and are in constant mesh with the range drive gear 31 and the range reduction gear 32, respectively.
As shown in fig. 2 and 3, the input shaft 1 is coupled to the front housing a through a bearing. The front end of the main box main shaft 10 is connected with the input shaft 1 through a bearing, and the rear end is connected with the middle shell B through a bearing. The main box intermediate shaft 20 is connected at its front end to the front housing a through a bearing and at its rear end to the middle housing B through a bearing. The idler shaft 25 is supported on the middle housing B. The front end of the sub-tank main shaft 30 is connected to a sub-tank drive gear 31 via a bearing, and the rear end is connected to the rear case C via a bearing. The front end of the auxiliary box intermediate shaft 34 is connected to the middle housing B through a bearing, and the rear end is connected to the rear housing C through a bearing.
The connecting line of the main box main shaft 10 and the main box intermediate shaft 20 and the connecting line of the auxiliary box main shaft 30 and the auxiliary box intermediate shaft 34 form a certain included angle (see fig. 1), a bearing connected with the rear end of the main box intermediate shaft 20 and a bearing connected with the front end of the auxiliary box intermediate shaft 34 are positioned on the same cross section, and therefore the included angle between the main box and the auxiliary box is determined by the diameters of the outer circles of the bearing at the rear end of the main box intermediate shaft 20 and the bearing at the front end of the auxiliary box intermediate shaft 34. The main box and the auxiliary box are arranged in an included angle, and the whole axial size of the transmission is small, so that the whole vehicle arrangement is facilitated.
The transmission shell comprises a control shell, a rear bearing cover and the like, which are all manufactured by adopting an aluminum alloy die-casting process.
The connection between the rear end of the main box main shaft 10 and the auxiliary box driving gear 31 adopts a connection mode of spigot positioning and spline torque transmission, and ensures the meshing stability of the auxiliary box driving gear 31 and an auxiliary box intermediate shaft transmission gear.
All gears of the invention are helical gears, the axial force is completely offset by designing different helical angles for the gears on the main box intermediate shaft 20 and the auxiliary box intermediate shaft 34 (after a pair of helical angles of the gears is determined, the helical angles of other gear pairs are reversely calculated by the transmitted speed ratio and the axial force offset), and the bearings at the two ends of the main box intermediate shaft 20 and the auxiliary box intermediate shaft 34 do not need to bear additional axial force.
The main box and the auxiliary box of the invention are both of a single-intermediate-shaft structure, and the input torque is 450Nm, the center distance of the main box is 100mm, and the center distance of the auxiliary box is 105 mm. Compared with a transmission with a single-box structure, on the premise of the same output torque, the transmission with the auxiliary box is shifted in a low gear region, four pairs of gears are used for transmitting torque, the reduction ratio of each pair of gears is smaller, and correspondingly, a small center distance can be selected.
The 8-gear low-torque transmission works: the power of the engine is transmitted to an input shaft 1 of the transmission through a clutch, an input gear on the input shaft 1 is constantly meshed with a main box intermediate shaft transmission gear 21 to drive a main box intermediate shaft 20 to transmit power, gears on the main box intermediate shaft 20 are constantly meshed with gears on a main box main shaft 10 respectively, and the gears on the main box main shaft 10 idle on the main box main shaft 10. Because the synchronizer gear hub of the second synchronizer 15 or the first synchronizer 16 is connected with the main box main shaft 10 through a spline, the synchronizer combined gear ring is also connected with a gear on the main box main shaft 10 through a spline, after the gear shifting action is executed, the synchronizer combined gear ring is simultaneously connected with the synchronizer gear hub and the synchronizer combined gear ring through a spline, and the synchronizer combined gear ring is simultaneously connected with a certain gear on the main box main shaft 10 through a spline, the main box main shaft 10 and the certain gear on the main box main shaft 10 are integrated, rotate according to a certain speed ratio and transmit power to the auxiliary box driving gear 31;
when the auxiliary gearbox is positioned in a high gear area, namely the auxiliary gearbox synchronizer 33 is connected with the auxiliary gearbox driving gear 31, the power output by the main gearbox main shaft 10 is transmitted to the auxiliary gearbox main shaft 30 through the auxiliary gearbox driving gear 31 and gear sleeves on the auxiliary gearbox synchronizer 33 to be directly output, and then the power is output through the flange 35; when the transmission is in a low gear range, namely when the auxiliary box synchronizer 33 is connected with the auxiliary box reduction gear 32, the power output by the main box main shaft 10 is transmitted to the auxiliary box intermediate shaft 34 through the auxiliary box driving gear 31 and the auxiliary box intermediate shaft transmission gear, and then transmitted to the auxiliary box main shaft 30 through the auxiliary box reduction gear 32 and the gear sleeve on the auxiliary box synchronizer 33 and output power through the flange 35. The sleeve gear of the sub-tank synchronizer 33 pushes the sub-tank fork 40 to operate by the piston movement of a sub-tank cylinder 42 built in the sub-tank housing.
Claims (9)
1. The eight-gear small-torque transmission is characterized by comprising a transmission shell, wherein a main box and an auxiliary box are arranged in the transmission shell;
the main box comprises an input shaft (1), a main box main shaft (10) and a main box intermediate shaft (20); an input gear is arranged on the input shaft (1); a main box main shaft first catch wheel (13), a main box main shaft second catch wheel (12), a main box main shaft third catch wheel (11) and a main box main shaft reverse catch wheel (14) are mounted on a main box main shaft (10), a main box intermediate shaft transmission gear (21), a main box intermediate shaft first catch gear, a main box intermediate shaft second catch gear, a main box intermediate shaft third catch gear (22) and a main box intermediate shaft reverse catch wheel are mounted on a main box intermediate shaft (20), the main box intermediate shaft transmission gear (21) is meshed with an input gear, and the main box intermediate shaft first catch gear, the main box intermediate shaft second catch gear, the main box intermediate shaft third catch gear (22) and the main box intermediate shaft reverse catch wheel are respectively meshed with the main box main shaft first catch wheel (13), the main box main shaft second catch wheel (12), the main box main shaft third catch wheel (11) and the main box main shaft reverse catch wheel (;
the auxiliary box comprises an auxiliary box driving gear (31), an auxiliary box main shaft (30) and an auxiliary box intermediate shaft (34); the auxiliary box driving gear (31) is connected to the rear end of the main box main shaft (10); an auxiliary box reduction gear (32) is arranged on the auxiliary box main shaft (30); an auxiliary box intermediate shaft transmission gear and an auxiliary box intermediate shaft low-gear are mounted on an auxiliary box intermediate shaft (34), the auxiliary box intermediate shaft transmission gear is meshed with an auxiliary box driving gear (31), and the auxiliary box intermediate shaft low-gear is meshed with an auxiliary box reduction gear (32);
the connecting line of the main box main shaft (10) and the main box intermediate shaft (20) and the connecting line of the auxiliary box main shaft (30) and the auxiliary box intermediate shaft (34) are arranged in an included angle, and a bearing connected with the rear end of the main box intermediate shaft (20) and a bearing connected with the front end of the auxiliary box intermediate shaft (34) are positioned on the same cross section; the transmission shell is an aluminum alloy die casting; all the gears adopt full helical gears.
2. The eight-speed low torque transmission according to claim 1, wherein needle bearings are provided between the main box main shaft (10) and the main box main shaft one-catch wheel (13), the main box main shaft two-catch wheel (12), the main box main shaft three-catch wheel (11), and the main box main shaft reverse-catch wheel (14), respectively.
3. The eight-gear low-torque transmission is characterized in that a first synchronizer (16) is arranged between a first main box main shaft gear wheel (13) and a second main box main shaft gear wheel (12), a second synchronizer (15) is arranged between a third main box main shaft gear wheel (11) and an input gear, and a reverse gear sliding sleeve (17) is arranged at the front end of a reverse gear wheel (14) of a main box main shaft.
4. The eight-gear low-torque transmission according to claim 1, further comprising an intermediate gear shaft (25), wherein a reverse gear intermediate gear (23) is mounted on the intermediate gear shaft (25), and the reverse gear intermediate gear (23) is meshed with a main box intermediate shaft reverse gear and a main box main shaft reverse gear (14), respectively; a needle roller bearing is arranged between the reverse gear intermediate wheel (23) and the intermediate wheel shaft (25).
5. The eight speed low torque transmission according to claim 1, wherein a range synchronizer (33) is mounted between the range drive gear (31) and the range reduction gear (32).
6. The eight speed low torque transmission according to claim 5, wherein a range fork (40) and a range cylinder (42) are provided above the range synchronizer (33), the range fork (40) being connected to a piston (41) of the range cylinder (42).
7. The eight speed low torque transmission of claim 1, wherein the range countershaft (34), the range countershaft transfer gears and the range countershaft low range gears are all integrally formed.
8. The eight speed low torque transmission of claim 1, wherein the transmission housing comprises a front housing a, a middle housing B, and a rear housing C; the input shaft (1) is connected to the front shell A through a bearing; the front end of the main box main shaft (10) is connected with the input shaft (1) through a bearing, and the rear end of the main box main shaft is connected to the middle shell B through a bearing; the front end of a main box intermediate shaft (20) is connected to the front shell A through a bearing, and the rear end of the main box intermediate shaft is connected to the middle shell B through a bearing; the front end of the auxiliary box main shaft (30) is connected with an auxiliary box driving gear 31 through a bearing, and the rear end is connected on the rear shell C through a bearing; the front end of the auxiliary box intermediate shaft (34) is connected to the middle shell B through a bearing, and the rear end is connected to the rear shell C through a bearing.
9. The eight speed low torque transmission according to claim 1, wherein the rear end of the main box main shaft (10) and the auxiliary box drive gear (31) are positioned by a spigot and connected by a spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010981257.5A CN112081882A (en) | 2020-09-17 | 2020-09-17 | Eight-gear small-torque transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010981257.5A CN112081882A (en) | 2020-09-17 | 2020-09-17 | Eight-gear small-torque transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112081882A true CN112081882A (en) | 2020-12-15 |
Family
ID=73736599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010981257.5A Pending CN112081882A (en) | 2020-09-17 | 2020-09-17 | Eight-gear small-torque transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112081882A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025217A (en) * | 2006-02-20 | 2007-08-29 | 陕西法士特齿轮有限责任公司 | Multi-shift combined pair-box three-middle-shaft automobile speed changer |
| 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 |
| CN201380753Y (en) * | 2009-01-21 | 2010-01-13 | 浙江长泰机械有限公司 | Medium-type automobile speed changer with main and auxiliary boxes |
| CN202946624U (en) * | 2012-09-27 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | 16-gear automobile gearbox |
| CN206017659U (en) * | 2016-08-22 | 2017-03-15 | 中国第一汽车股份有限公司 | 8 shift transmission assembly of double jackshafts |
| CN207961429U (en) * | 2017-12-20 | 2018-10-12 | 中国第一汽车股份有限公司 | A kind of 10 shift transmission assembly of Al-alloy casing |
| CN210265713U (en) * | 2019-06-25 | 2020-04-07 | 长春市启达汽车传动器制造有限公司 | Mechanical transmission system and wheel type excavator |
| CN210978402U (en) * | 2019-05-23 | 2020-07-10 | 一汽解放汽车有限公司 | Novel large-torque direct-gear transmission assembly |
-
2020
- 2020-09-17 CN CN202010981257.5A patent/CN112081882A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025217A (en) * | 2006-02-20 | 2007-08-29 | 陕西法士特齿轮有限责任公司 | Multi-shift combined pair-box three-middle-shaft automobile speed changer |
| 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 |
| CN201380753Y (en) * | 2009-01-21 | 2010-01-13 | 浙江长泰机械有限公司 | Medium-type automobile speed changer with main and auxiliary boxes |
| CN202946624U (en) * | 2012-09-27 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | 16-gear automobile gearbox |
| CN206017659U (en) * | 2016-08-22 | 2017-03-15 | 中国第一汽车股份有限公司 | 8 shift transmission assembly of double jackshafts |
| CN207961429U (en) * | 2017-12-20 | 2018-10-12 | 中国第一汽车股份有限公司 | A kind of 10 shift transmission assembly of Al-alloy casing |
| CN210978402U (en) * | 2019-05-23 | 2020-07-10 | 一汽解放汽车有限公司 | Novel large-torque direct-gear transmission assembly |
| CN210265713U (en) * | 2019-06-25 | 2020-04-07 | 长春市启达汽车传动器制造有限公司 | Mechanical transmission system and wheel type excavator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1987979B1 (en) | Multi-speed compound vehicular transmission having an auxiliary section with three countershafts | |
| CN110657203B (en) | Transmission, power driving system and vehicle | |
| EP2510259B1 (en) | Powershift transmission for a motor vehicle | |
| WO2012088860A1 (en) | Variable speed bridge | |
| CN218777413U (en) | Electric drive bridge structure driven by single motor | |
| JPS6251769B2 (en) | ||
| CN201065917Y (en) | Double middle shaft ten-gear automobile speed changer | |
| CN101566223A (en) | Gear change mechanism for motor tricycle | |
| CN112081882A (en) | Eight-gear small-torque transmission | |
| CN101539195B (en) | Speed changing device of motor tricycle with gear reversing function | |
| CN207961429U (en) | A kind of 10 shift transmission assembly of Al-alloy casing | |
| CN110657200B (en) | Transmission, power driving system and vehicle | |
| CN202326941U (en) | Automobile transmission | |
| CN101025218A (en) | Multi-shift combined three-middle-shaft automobile speed changer | |
| CN2895883Y (en) | Multi-shift combined secondary-box three middle shaft automative speed variator | |
| CN209852061U (en) | Opposed double-motor power coupling automatic transmission | |
| CN110001371B (en) | Opposite type double-motor power coupling automatic transmission | |
| CN201385570Y (en) | Gearshift assembly for single-cylinder tri-wheeled vehicle | |
| CN2895884Y (en) | Multi-shift combined three-middle-shaft automotive speed-variator | |
| CN201534602U (en) | Motor tricycle speed variator with reversing function | |
| CN2582923Y (en) | Speed variator for car | |
| CN201672008U (en) | Small-center-distance multi-gear full-synchronized double-countershaft automobile transmission | |
| CN201621237U (en) | Ten-shift mechanical-type speed changer assembly of heavy-duty car | |
| US6843147B2 (en) | Automatic transmission | |
| CN214092910U (en) | Light truck ten-gear transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201215 |
|
| RJ01 | Rejection of invention patent application after publication |