CN103161887B - Be applicable to the Powershift transmission of engineering machinery - Google Patents
Be applicable to the Powershift transmission of engineering machinery Download PDFInfo
- Publication number
- CN103161887B CN103161887B CN201310116674.3A CN201310116674A CN103161887B CN 103161887 B CN103161887 B CN 103161887B CN 201310116674 A CN201310116674 A CN 201310116674A CN 103161887 B CN103161887 B CN 103161887B
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- gear
- fixed gear
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- transmission
- fixed
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 78
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 13
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
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
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- 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
- F16H2003/0818—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 comprising means for power-shifting
Abstract
The invention discloses a kind of Powershift transmission being applicable to engineering machinery, comprise input shaft, output shaft, power transmission is carried out by three power transmission units between described input shaft and output shaft, the present invention adopts technique scheme, adopt 5 transmission shafts, gear on each axle adds up to 14, structure is simple, transmission engaging gear logarithm is few, participation driving parts is few, all forward gearss are through four pairs of gears meshing outputting powers, and all backward gears are through three pairs of gears meshing outputting powers, and transmission efficiency is high; Adopt double-action clutch, the quantity of axle is reduced, housing structure is simple, and manufacture cost reduces; Meanwhile, this gearbox can use six forward gearss, three backward gears, improves the power utilization of motor and the acceleration performance of vehicle, is applicable to the three element fluid torque converters that coupling transmission efficiency is higher.
Description
Technical field
The present invention relates to a kind of shift transmission, relate to a kind of Powershift transmission being applicable to engineering machinery specifically, belong to technical field of engineering machinery.
Background technique
Current engineering machinery, as the gearbox on loader, grader, road roller, dumping car, generally has planetary and fixed shaft type two kinds.Adopt planetary gearbox, complex structure, required precision is high, technology capability is poor, manufacture cost is high.Existing fixed axle gearbox, such as number of patent application is that the Chinese invention patent of " 95196765.7 " discloses the multispeed powershift reversing gear of gear shift under a load " a kind of can ", the each shelves of this speed changer are through two clutches and certain gear pair effect outputting power, advance one grade through six pairs of gears meshing outputting powers, all the other forward gearss are through four pairs of gears meshing outputting powers, backward gear, through five pairs of gears meshing outputting powers, needs 16 driving gears 16 altogether; Another part number of patent application is that the Chinese invention patent of " 200810044807.X " discloses " power-shifting transmission being applicable to engineering machinery ", the relatively front a kind of drive path of this speed changer makes moderate progress, each shelves are through two clutches and certain gear pair effect outputting power, forward gears is through four pairs of gears meshing outputting powers, backward gear, through five pairs of gears meshing outputting powers, needs 14 driving gears altogether.
Above-mentioned two kinds of variator gears meshing logarithms are many, participate in driving parts many, and two speed changers all have eight axles, six clutch appliances simultaneously, will cause transmission efficiency decline, temperature rise is increased, parts depreciation strengthens, and manufacture and maintenance cost increase.Two speed changers adopt single-acting clutch, add the quantity of axle, and on casing, the mounting hole quantity of axle increases, and increase complexity and the difficulty of processing of case, cost also can strengthen.
The Chinese utility model patent that number of patent application is " 201120439772.7 " discloses " engineering machinery hydraulic mechanical transmission box ", advance third gear is wherein long with the five grades of Transmitted chainss that advance, respectively through 8 to 6 pairs of gears meshing outputting powers, engineering machinery particularly higher the falling back one grade of loader utilization ratio also has 5 pairs of gears meshing outputting powers, with the same transmission chain length of above-mentioned two kinds of speed changers, transmission efficiency decline will be caused, temperature rise is increased, parts depreciation strengthens, manufacture and maintenance cost increase.
Summary of the invention
The problem to be solved in the present invention is to overcome above-mentioned Problems existing, provides that a kind of transmission efficiency is high, cost of production is low, the Powershift transmission being applicable to engineering machinery of long service life.
In order to solve the problem, the present invention by the following technical solutions:
Be applicable to a Powershift transmission for engineering machinery, comprise input shaft, output shaft, between described input shaft and output shaft, carry out power transmission by three power transmission units.
Below the further optimization of the present invention to such scheme:
Described three power transmission units comprise:
First jack shaft, is in transmission connection with input shaft;
3rd jack shaft, is in transmission connection with output shaft;
Second jack shaft, is in transmission connection respectively with input shaft, the first jack shaft, the 3rd jack shaft.
Further optimization: described first jack shaft, the second jack shaft, the 3rd jack shaft are respectively provided with two clutches.
Further optimization: described input shaft is fixedly connected with the first fixed gear, the second fixed gear; Described output shaft is fixedly connected with the 7th fixed gear.
Further optimization: described first jack shaft is provided with:
Second free gear, can be meshed with the first fixed gear;
First free gear, can be meshed with the second fixed gear;
3rd fixed gear, is fixedly mounted between the second free gear and the first free gear.
Further optimization: two clutches on described first jack shaft comprise:
Third direction clutch, is in transmission connection with the second free gear;
First direction clutch, is in transmission connection with the first free gear.
Further optimization: the first free gear and the second free gear connect with the first jack shaft rolling bearing respectively.
Further optimization: described second jack shaft is provided with successively:
4th free gear, can be meshed with the first fixed gear;
8th fixed gear, often engages with the 3rd fixed gear;
3rd free gear and the 4th fixed gear.
Further optimization: two clutches on described second jack shaft comprise:
Second direction clutch, is in transmission connection with the 4th free gear;
First gear clutch, is in transmission connection with the 3rd free gear.
Further optimization: the 3rd free gear and the 4th free gear connect with the second jack shaft rolling bearing respectively.
Further optimization: described 3rd jack shaft is provided with successively:
5th free gear, can be meshed with the 8th fixed gear;
5th fixed gear, can be meshed with the 3rd free gear;
6th free gear, can be meshed with the 4th fixed gear;
6th fixed gear, often engages with the 7th fixed gear.
Further optimization: two clutches on described 3rd jack shaft comprise:
Third gear clutch, is in transmission connection with the 5th free gear;
Second gear clutch, is in transmission connection with the 6th free gear.
Further optimization: the 5th free gear and the 6th free gear connect with the 3rd jack shaft rolling bearing respectively.
Further optimization: described first fixed gear, the second fixed gear, the 3rd fixed gear, the 4th fixed gear, the 5th fixed gear, the 6th fixed gear, the 7th fixed gear, the 8th fixed gear and the first free gear, the second free gear, the 3rd free gear, the 4th free gear, the 5th free gear, the 6th free gear are thin and tall tooth, contact ratio and overlap ratio
.
The present invention adopts technique scheme, adopt 5 transmission shafts, gear on each axle adds up to 14, structure is simple, transmission engaging gear logarithm is few, and participate in driving parts few, all forward gearss are through four pairs of gears meshing outputting powers, all backward gears are through three pairs of gears meshing outputting powers, and transmission efficiency is high; Adopt double-action clutch, the quantity of axle is reduced, housing structure is simple, and manufacture cost reduces; Meanwhile, this gearbox can use six forward gearss, three backward gears, improves the power utilization of motor and the acceleration performance of vehicle, is applicable to the three element fluid torque converters that coupling transmission efficiency is higher.
All gears of gearbox all use thin and tall tooth, control gear contact ratio
, gear has two to three pairs of gear teeth meshing transmissions all the time in transmission process, so noise is low, tooth root and Gear Surface Strength increase, anti-fatigue reliability improves; Powershift transmission of the present invention is because of all with straight-tooth, and all gear shift rollers or needle bearing, reduce bearing play adjustment requirement, also facilitate the assembling of shaft assembly and disassemble, and adds that torque-converters is external and improves two servicing ease becoming assembly.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the embodiment of the present invention.
In figure: 1-torque-converters; 2-first fixed gear; 3-input shaft; 4-second fixed gear; 5-first jack shaft; 6-first free gear; 7-first direction clutch; 8-the 3rd free gear; 9-the 4th fixed gear; 10-first gear clutch; 11-the 6th free gear; 12-the 6th fixed gear; 13-the 3rd jack shaft; 14-second gear clutch; 15-the 7th fixed gear; 16-output shaft; 17-the 5th fixed gear; 18-the 5th free gear; 19-third gear clutch; 20-the 8th fixed gear; 21-second jack shaft; 22-second direction clutch; 23-the 4th free gear; 24-the 3rd fixed gear; 25-third direction clutch; 26-second free gear.
Embodiment
Embodiment, as shown in Figure 1, a kind of Powershift transmission being applicable to engineering machinery, comprises input shaft 3, output shaft 16, one end of described input shaft 3 is connected with torque-converters 1, carries out power transmission between described input shaft 3 and output shaft 16 by three power transmission units.Described three power transmission units comprise: the first jack shaft 5, is in transmission connection with input shaft 3; 3rd jack shaft 13, is in transmission connection with output shaft 16; Second jack shaft 21, is in transmission connection respectively with input shaft 3, first jack shaft 5, the 3rd jack shaft 13.
Described input shaft is fixedly connected with the first fixed gear 2, second fixed gear 4, described output shaft is fixedly connected with the 7th fixed gear 15.
Described first jack shaft 5, second jack shaft 21, the 3rd jack shaft 13 are respectively provided with two clutches.
Described input shaft 3 is fixedly connected with the first fixed gear 2, second fixed gear 4; Described output shaft 16 is fixedly connected with the 7th fixed gear 15.
Described first jack shaft 5 is provided with: second free gear 26 that can be meshed with the first fixed gear 2; First free gear 6 that can be meshed with the second fixed gear 4; Be fixedly mounted on the 3rd fixed gear 24 between the second free gear 26 and the first free gear 6.
Two clutches on described first jack shaft 5 comprise: the third direction clutch 25 be in transmission connection with the second free gear 26 and the first direction clutch 7 be in transmission connection with the first free gear 6.
Second free gear 26 and the first free gear 6 connect with rolling bearing with the first jack shaft 5 respectively, and connect respectively by third direction clutch 25 and first direction clutch 7 or interrupt transmission of power.
Described second jack shaft 21 is provided with successively: the 4th free gear 23 that can be meshed with the first fixed gear 2; 8th fixed gear 20 often engages with the 3rd fixed gear 24; 3rd free gear 8; 4th fixed gear 9.
Two clutches on described second jack shaft 21 comprise: the second direction clutch 22 be in transmission connection with the 4th free gear 23; The first gear clutch 10 be in transmission connection with the 3rd free gear 8.
4th free gear 23 and the 3rd free gear 8 connect with rolling bearing with the second jack shaft 21 respectively, and connect respectively by second direction clutch 22 and the first gear clutch 10 or interrupt transmission of power.
Described 3rd jack shaft 13 is provided with successively: the 5th free gear 18 that can be meshed with the 8th fixed gear 20; 5th fixed gear 17 that can be meshed with the 3rd free gear 8;
6th free gear 11 that can be meshed with the 4th fixed gear 9; 6th fixed gear 12, often engages with the 7th fixed gear 15.
Two clutches on described 3rd jack shaft 13 comprise: the third gear clutch 19 be in transmission connection with the 5th free gear 18; The second gear clutch 14 be in transmission connection with the 6th free gear 11.
5th free gear 18 and the first free gear 11 connect with rolling bearing with the 3rd jack shaft 13 respectively, and connect respectively by third gear clutch 19 and the second gear clutch 14 or interrupt transmission of power.
Gear on described first jack shaft 5 and the gears meshing on the second jack shaft 21 form commutating tooth wheels, and the gear on described second jack shaft 21 and the gears meshing on the 3rd jack shaft 13 form driving gear set.
Described first fixed gear 2, second fixed gear 4, the 3rd fixed gear 24, the 4th fixed gear 9, the 5th fixed gear 17, the 6th fixed gear 12, the 7th fixed gear 15, the 8th fixed gear 20 and the first free gear 6, second free gear 26, the 3rd free gear 8, the 4th free gear 23, the 5th free gear 18, the 6th free gear 11 are thin and tall tooth, contact ratio and overlap ratio
.
Gearbox of the present invention has six forward gearss, three backward gears, and its embodiment is as follows:
Advance one grade, by closed second gear clutch 14 and third direction clutch 25, first fixed gear 2 engages with the second free gear 26, 3rd fixed gear 24 engages with the 8th fixed gear 20, 4th fixed gear 9 engages with the 6th free gear 11, 6th fixed gear 12 engages with the 7th fixed gear 15, power drives the first fixed gear 2 through input shaft 3, second free gear 26, 3rd fixed gear 24, 8th fixed gear 20, 4th fixed gear 9, 6th free gear 11, 6th fixed gear 12, 7th fixed gear 15 is delivered on output shaft 16.
Advance second gear, by closed third direction clutch 25 and the first gear clutch 10, first fixed gear 2 engages with the second free gear 26, 3rd fixed gear 24 engages with the 8th fixed gear 20, 3rd free gear 8 engages with the 5th fixed gear 17, 6th fixed gear 12 engages with the 7th fixed gear 15, power drives the first fixed gear 2 through input shaft 3, second free gear 26, 3rd fixed gear 24, 8th fixed gear 20, 3rd free gear 8, 5th fixed gear 17, 6th fixed gear 12, 7th fixed gear 15 is delivered on output shaft 16.
Advance third gear, by closed first direction clutch 7 and the second gear clutch 14, second fixed gear 4 engages with the first free gear 6, 3rd fixed gear 24 engages with the 8th fixed gear 20, 4th fixed gear 9 engages with the 6th free gear 11, 6th fixed gear 12 engages with the 7th fixed gear 15, power drives the second fixed gear 4 through input shaft 3, first free gear 6, 3rd fixed gear 24, 8th fixed gear 20, 4th fixed gear 9, 6th free gear 11, 6th fixed gear 12, 7th fixed gear 15 is delivered on output shaft 16.
Advance fourth gear, by closed third direction clutch 25 and third gear clutch 19, first fixed gear 2 engages with the second free gear 26, the 8th fixed gear 20 engages with the 3rd fixed gear 24 and the 5th free gear 18 simultaneously, 6th fixed gear 12 engages with the 7th fixed gear 15, and through input shaft 3, power drives that the first fixed gear 2, second free gear 26 engages, the 8th fixed gear 20, the 3rd fixed gear 24, the 5th free gear 18, the 6th fixed gear 12, the 7th fixed gear 15, be delivered on output shaft 16.
Advance five grades, by closed first direction clutch 7 and the first gear clutch 10, second fixed gear 4 engages with the first free gear 6, 3rd fixed gear 24 engages with the 8th fixed gear 20, 3rd free gear 8 engages with the 5th fixed gear 17, 6th fixed gear 12 engages with the 7th fixed gear 15, power drives the second fixed gear 4 through input shaft 3, first free gear 6 engages, 3rd fixed gear 24, 8th fixed gear 20, 3rd free gear 8, 5th fixed gear 17, 6th fixed gear 12, 7th fixed gear 15 is delivered on output shaft 16.
Advance six grades, by closed first direction clutch 7 and third gear clutch 19, second fixed gear 4 engages with the first free gear 6,8th fixed gear 20 engages with the 3rd fixed gear 24 and the 5th free gear 18 simultaneously, 6th fixed gear 12 engages with the 7th fixed gear 15, and power drives the second fixed gear 4, first free gear 6, the 8th fixed gear 20, the 3rd fixed gear 24, the 5th free gear 18, the 6th fixed gear 12, the 7th fixed gear 15 to be delivered on output shaft 16 through input shaft 3.
Fall back one grade, by closed second direction clutch 22 and the second gear clutch 14, first fixed gear 2 engages with the 4th free gear 23,4th fixed gear 9 engages with the 6th free gear 11,6th fixed gear 12 engages with the 7th fixed gear 15, and power drives the first fixed gear 2, the 4th free gear 23, the 4th fixed gear 9, the 6th free gear 11, the 6th fixed gear 12, the 7th fixed gear 15 to be delivered on output shaft 16 through input shaft 3.
Reverse second speed gear, by closed second direction clutch 22 and the first gear clutch 10, first fixed gear 2 engages with the 4th free gear 23,3rd free gear 8 engages with the 5th fixed gear 17,6th fixed gear 12 engages with the 7th fixed gear 15, and power drives the first fixed gear 2, the 4th free gear 23, the 3rd free gear 8, the 5th fixed gear 17, the 6th fixed gear 12, the 7th fixed gear 15 to be delivered on output shaft 16 through input shaft 3.
Fall back third gear, by closed second direction clutch 22 and third gear clutch 19, first fixed gear 2 engages with the 4th free gear 23, the 8th fixed gear 20 engages with the 5th free gear 18, the 6th fixed gear 12 engages with the 7th fixed gear 15, and power drives the first fixed gear 2, the 4th free gear 23, the 8th fixed gear 20, the 5th free gear 18, the 6th fixed gear 12, the 7th fixed gear 15 to be delivered on output shaft 16 through input shaft 3.
The whole forward gears of gearbox of the present invention is closed by a direction clutch and a gear clutch, through four pairs of gears meshing outputting powers, whole backward gear is closed by a direction clutch and a gear clutch, through three pairs of gears meshing outputting powers, simplify structure, improve efficiency, reduce cost.
Claims (10)
1. be applicable to a Powershift transmission for engineering machinery, comprise input shaft (3), output shaft (16), it is characterized in that:
Power transmission is carried out by three power transmission units between described input shaft (3) and output shaft (16);
Described three power transmission units comprise:
First jack shaft (5), is in transmission connection with input shaft (3);
3rd jack shaft (13), is in transmission connection with output shaft (16);
Second jack shaft (21), is in transmission connection respectively with input shaft (3), the first jack shaft (5), the 3rd jack shaft (13);
Described first jack shaft (5), the second jack shaft (21), the 3rd jack shaft (13) are respectively provided with two clutches;
Described input shaft (3) is fixedly connected with the first fixed gear (2), the second fixed gear (4); Described output shaft (16) is fixedly connected with the 7th fixed gear (15);
Described first jack shaft (5) is provided with:
Second free gear (26), can be meshed with the first fixed gear (2);
First free gear (6), can be meshed with the second fixed gear (4);
3rd fixed gear (24), is fixedly mounted between the second free gear (26) and the first free gear (6).
2. the Powershift transmission being applicable to engineering machinery according to claim 1, is characterized in that:
Two clutches on described first jack shaft (5) comprise:
Third direction clutch (25), is in transmission connection with the second free gear (26);
First direction clutch (7), is in transmission connection with the first free gear (6).
3. the Powershift transmission being applicable to engineering machinery according to claim 2, is characterized in that:
Second free gear (26) and the first free gear (6) connect with rolling bearing with the first jack shaft (5) respectively, and connect respectively by third direction clutch (25) and first direction clutch (7) or interrupt transmission of power.
4. the Powershift transmission being applicable to engineering machinery according to claim 3, is characterized in that: described second jack shaft (21) is provided with successively:
4th free gear (23), can be meshed with the first fixed gear (2);
8th fixed gear (20), often engages with the 3rd fixed gear (24);
3rd free gear (8) and the 4th fixed gear (9).
5. the Powershift transmission being applicable to engineering machinery according to claim 4, is characterized in that:
Two clutches on described second jack shaft (21) comprise:
Second direction clutch (22), is in transmission connection with the 4th free gear (23);
First gear clutch (10), is in transmission connection with the 3rd free gear (8).
6. the Powershift transmission being applicable to engineering machinery according to claim 5, is characterized in that:
4th free gear (23) and the 3rd free gear (8) connect with rolling bearing with the second jack shaft (21) respectively, and connect respectively by second direction clutch (22) and the first gear clutch (10) or interrupt transmission of power.
7. the Powershift transmission being applicable to engineering machinery according to claim 6, is characterized in that:
Described 3rd jack shaft (13) is provided with successively:
5th free gear (18), can be meshed with the 8th fixed gear (20);
5th fixed gear (17), can be meshed with the 3rd free gear (8);
6th free gear (11), can be meshed with the 4th fixed gear (9);
6th fixed gear (12), often engages with the 7th fixed gear (15).
8. the Powershift transmission being applicable to engineering machinery according to claim 7, is characterized in that:
Two clutches on described 3rd jack shaft (13) comprise:
Third gear clutch (19), is in transmission connection with the 5th free gear (18);
Second gear clutch (14), is in transmission connection with the 6th free gear (11).
9. the Powershift transmission being applicable to engineering machinery according to claim 8, is characterized in that:
5th free gear (18) and the 6th free gear (11) connect with rolling bearing with the 3rd jack shaft (13) respectively, and connect respectively by third gear clutch (19) and the second gear clutch (14) or interrupt transmission of power.
10. the Powershift transmission being applicable to engineering machinery according to claim 9, is characterized in that:
Described first fixed gear (2), the second fixed gear (4), the 3rd fixed gear (24), the 4th fixed gear (9), the 5th fixed gear (17), the 6th fixed gear (12), the 7th fixed gear (15), the 8th fixed gear (20) are thin and tall tooth, contact ratio and overlap ratio with the first free gear (6), the second free gear (26), the 3rd free gear (8), the 4th free gear (23), the 5th free gear (18), the 6th free gear (11)
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310116674.3A CN103161887B (en) | 2013-04-07 | 2013-04-07 | Be applicable to the Powershift transmission of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310116674.3A CN103161887B (en) | 2013-04-07 | 2013-04-07 | Be applicable to the Powershift transmission of engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161887A CN103161887A (en) | 2013-06-19 |
| CN103161887B true CN103161887B (en) | 2015-09-02 |
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ID=48585274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310116674.3A Active CN103161887B (en) | 2013-04-07 | 2013-04-07 | Be applicable to the Powershift transmission of engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103161887B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2535700A1 (en) * | 1975-08-09 | 1977-02-10 | Zahradfabrik Friechrichshafen | Multistage forward and reverse gearing - is changeable under load with three coaxial gears with two clutches between |
| CN2599318Y (en) * | 2003-02-26 | 2004-01-14 | 杭州前进齿轮箱集团有限公司 | Power transfer hydraulic speed variator |
| CN201306439Y (en) * | 2008-11-13 | 2009-09-09 | 杭州前进齿轮箱集团股份有限公司 | Power-shift transmission |
| CN201386784Y (en) * | 2008-11-13 | 2010-01-20 | 杭州前进齿轮箱集团股份有限公司 | Large-speed-ratio power shift transmission |
| CN201695423U (en) * | 2010-06-01 | 2011-01-05 | 杭州发达齿轮箱集团有限公司 | Gearbox for ground machinery |
| CN203146718U (en) * | 2013-04-07 | 2013-08-21 | 福田雷沃国际重工股份有限公司 | Power shift gearbox applicable to engineering machine |
-
2013
- 2013-04-07 CN CN201310116674.3A patent/CN103161887B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2535700A1 (en) * | 1975-08-09 | 1977-02-10 | Zahradfabrik Friechrichshafen | Multistage forward and reverse gearing - is changeable under load with three coaxial gears with two clutches between |
| CN2599318Y (en) * | 2003-02-26 | 2004-01-14 | 杭州前进齿轮箱集团有限公司 | Power transfer hydraulic speed variator |
| CN201306439Y (en) * | 2008-11-13 | 2009-09-09 | 杭州前进齿轮箱集团股份有限公司 | Power-shift transmission |
| CN201386784Y (en) * | 2008-11-13 | 2010-01-20 | 杭州前进齿轮箱集团股份有限公司 | Large-speed-ratio power shift transmission |
| CN201695423U (en) * | 2010-06-01 | 2011-01-05 | 杭州发达齿轮箱集团有限公司 | Gearbox for ground machinery |
| CN203146718U (en) * | 2013-04-07 | 2013-08-21 | 福田雷沃国际重工股份有限公司 | Power shift gearbox applicable to engineering machine |
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| Publication number | Publication date |
|---|---|
| CN103161887A (en) | 2013-06-19 |
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