Multi-gear power shifting transmission

Abstract

The utility model discloses a multi-gear power shifting transmission, which is characterized in that one end of a first transmission shaft is connected with an engine, and a first clutch and a second clutch are arranged on the first transmission shaft; the first gear, the second gear, the third clutch and the fourth clutch are mounted on the second transmission shaft, the first clutch is connected with the third clutch, the second clutch is connected with the fourth clutch, the first gear is connected with the fifth clutch, and the second gear is connected with the third gear; a fifth clutch, a sixth clutch, a seventh clutch, an eighth clutch, a first planetary gear set, a second planetary gear set, a third planetary gear set and a fifth gear are installed on a third transmission shaft. A third gear and a fourth gear are mounted on a fourth transmission shaft, and the fourth gear is connected with a sixth clutch; the fifth gear is connected with a front axle clutch and a sixth gear, the sixth gear is connected with a central transmission gear box, and full-power gear shifting can be achieved when a creeper gear is not switched.

Description

Technical Field

[0001] This utility model relates to the field of transmission technology, specifically to a multi-gear power shift transmission. Background Technology

[0002] Currently, multi-speed power shift transmissions on the market are mainly divided into two types: fixed-shaft power shift transmissions and full planetary gear set power shift transmissions. Fixed-shaft power shift transmissions use a wet clutch for power shifting in the front gearbox and a synchronizer for manual shifting in the rear gearbox. This results in high driver workload, reliance on experience for shifting, shift jerking, low transmission efficiency, poor fuel economy, and a large number of drive shafts, leading to a bulky vehicle. Full planetary gear set power shift transmissions use multiple planetary gear sets to form planetary gear trains, controlling shifting through clutches and brakes. This results in a complex control system, high manufacturing precision requirements, and high cost. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-gear power shift transmission that solves the problems of cumbersome operation, non-compact structure, low transmission efficiency, and complex control.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-gear power shift transmission, comprising:

[0005] A first drive shaft, one end of which is connected to the engine, and a first clutch and a second clutch are mounted on the first drive shaft;

[0006] The second drive shaft, the first gear, the second gear, the third clutch and the fourth clutch are mounted on the second drive shaft. The first clutch is connected to the third clutch, the second clutch is connected to the fourth clutch, the first gear is connected to the fifth clutch, and the second gear meshes with the third gear.

[0007] The third drive shaft, the fifth clutch, the sixth clutch, the seventh clutch, the eighth clutch, planetary gear set one, planetary gear set two, planetary gear set three and the fifth gear are mounted on the third drive shaft;

[0008] The fourth drive shaft, the third gear and the fourth gear are mounted on the fourth drive shaft, and the fourth gear is connected to the sixth clutch;

[0009] The fifth gear is connected to the drive gear of the front axle clutch and the sixth gear, and the sixth gear is connected to the central transmission gearbox.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention uses a combination of a fixed-axis wet clutch and a planetary gear set. The front gearbox uses a fixed-axis wet clutch for power shifting, while the crawler gearbox and the rear gearbox all use planetary gear sets for shifting. Full power shifting can be achieved without switching to crawler gear, solving the problems of cumbersome operation, non-compact structure, low transmission efficiency, and complex control. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a multi-gear power shift transmission according to an embodiment of the present invention.

[0013] In the picture:

[0014] 1. First drive shaft; 2. Second drive shaft; 3. First gear; 4. Second gear;

[0015] 5. Third gear; 6. Third drive shaft; 7. Fifth gear; 8. Fourth drive shaft;

[0016] 9. Fourth gear; 10. Front axle clutch; 11. Sixth gear; 12. Central transmission gearbox;

[0017] 13. Seventh gear; 14. Fifth drive shaft; 15. Sixth drive shaft; 16. First drive gear;

[0018] 17. Driving gear two; 18. Driven gear one; 19. Driven gear two; 20. Driving gear three;

[0019] 21. Driving gear four; 22. Driven gear three; 23. Driven gear four; 24. Eighth gear;

[0020] 25. The Ninth Gear;

[0021] A. First clutch; B. Second clutch; C. Third clutch; D. Fourth clutch;

[0022] F, fifth clutch; R, sixth clutch; X, seventh clutch; Y, eighth clutch;

[0023] P, Planetary Gear Set 1; M1, Planetary Gear Set 2; M2, Planetary Gear Set 3. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As shown in the figure, this utility model discloses a multi-gear power shift transmission, comprising:

[0026] A first drive shaft 1, one end of which is connected to the engine, and a first clutch A and a second clutch B are mounted on the first drive shaft 1;

[0027] The second drive shaft 2, the first gear 3, the second gear 4, the third clutch C and the fourth clutch D are mounted on the second drive shaft 2. The first clutch A is connected to the third clutch C, the second clutch B is connected to the fourth clutch D, the first gear 3 is connected to the fifth clutch F, the second gear 4 is connected to the third gear 5.

[0028] The third drive shaft 6, the fifth clutch F, the sixth clutch R, the seventh clutch X, the eighth clutch Y, the planetary gear set 1 P, the planetary gear set 2 M1, the planetary gear set 3 M2 and the fifth gear 7 are mounted on the third drive shaft 6; the planetary gear set 1 P is the climbing gear shifting planetary gear set, in which the synchronizer is engaged to the left for climbing gear and to the right for direct drive gear, the synchronizer needs to be operated manually.

[0029] The fourth drive shaft 8, the third gear 5 and the fourth gear 9 are mounted on the fourth drive shaft 8, and the fourth gear 9 is connected to the sixth clutch R;

[0030] The fifth gear 7 is connected to the front axle clutch 10 and the sixth gear 11, and the sixth gear 11 is connected to the central transmission gearbox 12.

[0031] Forward gear:

[0032] 1st gear: First clutch A engages → Fifth clutch F engages → Synchronizer on the left side of planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0033] 2nd gear: Second clutch B engages → Fifth clutch F engages → Synchronizer on the left side of planetary gear set 1P engages → Seventh clutch X and Eighth clutch Y disengage.

[0034] 3rd gear: Third clutch C engages → Fifth clutch F → Synchronizer on the left side of planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0035] 4th gear: Fourth clutch D engages → Fifth clutch F → Synchronizer on the left of planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0036] 5th gear: First clutch A engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0037] 6th gear: Second clutch B engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0038] 7th gear: Third clutch C engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0039] 8th gear: Fourth clutch D engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0040] 9th gear: First clutch A engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0041] 10th gear: Second clutch B engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0042] 11th gear: Third clutch C engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0043] 12th gear: Fourth clutch D engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0044] 13th gear: First clutch A engages → Fifth clutch F → Synchronizer left in planetary gear set P engages → Seventh clutch X and Eighth clutch Y both engage.

[0045] 14th gear: Second clutch B engages → Fifth clutch F → Synchronizer left in planetary gear set P engages → Seventh clutch X and Eighth clutch Y both engage.

[0046] 15th gear: Third clutch C engages → Fifth clutch F → Synchronizer left in planetary gear set P engages → Seventh clutch X and Eighth clutch Y both engage.

[0047] 16th gear: Fourth clutch D engages → Fifth clutch F → Planetary gear set 1 P synchronizer left engages → Seventh clutch X and Eighth clutch Y both engage.

[0048] 17th gear: First clutch A engages → Fifth clutch F → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0049] 18th gear: Second clutch B engages → Fifth clutch F → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0050] 19th gear: Third clutch C engages → Fifth clutch F → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0051] 20th gear: Fourth clutch D engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X and eighth clutch Y both disengage.

[0052] 21st gear: First clutch A engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0053] 22nd gear: Second clutch B engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0054] 23rd gear: Third clutch C engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0055] 24 gears: Fourth clutch D engages → Fifth clutch F → Planetary gear set P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0056] 25th gear: First clutch A engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0057] 26th gear: Second clutch B engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0058] 27th gear: Third clutch C engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0059] 28 gears: Fourth clutch D engages → Fifth clutch F → Planetary gear set P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0060] 29th gear: First clutch A engages → Fifth clutch F → Synchronizer right in planetary gear set 1P engages → Seventh clutch X and Eighth clutch Y both engage.

[0061] 30th gear: Second clutch B engages → Fifth clutch F → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y both engage.

[0062] 31st gear: Third clutch C engages → Fifth clutch F → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y both engage.

[0063] 32 gears: Fourth clutch D engages → Fifth clutch F → Planetary gear set 1 P synchronizer right engages → Seventh clutch X and Eighth clutch Y both engage.

[0064] Reverse gear:

[0065] 1st gear: First clutch A engages → Sixth clutch R → Synchronizer on the left side of planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0066] 2nd gear: Second clutch B engages → Sixth clutch R → Synchronizer on the left of planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0067] 3rd gear: Third clutch C engages → Sixth clutch R → Synchronizer on the left side of planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0068] 4th gear: Fourth clutch D engages → Sixth clutch R → Synchronizer left engagement in planetary gear set P → Seventh clutch X and eighth clutch Y disengage.

[0069] 5th gear: First clutch A engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0070] 6th gear: Second clutch B engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0071] 7th gear: Third clutch C engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0072] 8th gear: Fourth clutch D engages → Sixth clutch R → Planetary gear set - P synchronizer left engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0073] 9th gear: First clutch A engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0074] 10th gear: Second clutch B engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0075] 11th gear: Third clutch C engages → Sixth clutch R → Planetary gear set - P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0076] 12th gear: Fourth clutch D engages → Sixth clutch R → Planetary gear set - P synchronizer left engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0077] 13th gear: First clutch A engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X and Eighth clutch Y both engage.

[0078] 14th gear: Second clutch B engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X and Eighth clutch Y both engage.

[0079] 15th gear: Third clutch C engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X and Eighth clutch Y both engage.

[0080] 16th gear: Fourth clutch D engages → Sixth clutch R → Planetary gear set 1 P synchronizer left engages → Seventh clutch X and Eighth clutch Y both engage.

[0081] 17th gear: First clutch A engages → Sixth clutch R → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0082] 18th gear: Second clutch B engages → Sixth clutch R → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0083] 19th gear: Third clutch C engages → Sixth clutch R → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y disengage.

[0084] 20th gear: Fourth clutch D engages → Sixth clutch R → Planetary gear set 1 P synchronizer right engages → Seventh clutch X and eighth clutch Y disengage.

[0085] 21 gears: First clutch A engages → Sixth clutch R → Planetary gear set P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0086] 22 gears: Second clutch B engages → Sixth clutch R → Planetary gear set 1 P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0087] 23rd gear: Third clutch C engages → Sixth clutch R → Planetary gear set 1 P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0088] 24 gears: Fourth clutch D engages → Sixth clutch R → Planetary gear set - P synchronizer right engages → Seventh clutch X disengages, Eighth clutch Y engages.

[0089] 25th gear: First clutch A engages → Sixth clutch R → Planetary gear set 1 P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0090] 26th gear: Second clutch B engages → Sixth clutch R → Planetary gear set 1 P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0091] 27th gear: Third clutch C engages → Sixth clutch R → Planetary gear set 1 P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0092] 28 gears: Fourth clutch D engages → Sixth clutch R → Planetary gear set - P synchronizer right engages → Seventh clutch X engages, Eighth clutch Y disengages.

[0093] 29th gear: First clutch A engages → Sixth clutch R → Planetary gear set 1 P synchronizer right engages → Seventh clutch X and Eighth clutch Y both engage.

[0094] 30th gear: Second clutch B engages → Sixth clutch R → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y both engage.

[0095] 31 gears: Third clutch C engages → Sixth clutch R → Synchronizer right in planetary gear set P engages → Seventh clutch X and Eighth clutch Y both engage.

[0096] 32 gears: Fourth clutch D engages → Sixth clutch R → Planetary gear set - Planetary gear set - P synchronizer right engages → Seventh clutch X and eighth clutch Y both engage.

[0097] In one embodiment of this utility model, the seventh clutch X is connected to the planetary gears of the planetary gear set M1 and the third transmission shaft 6. When the seventh clutch X is engaged, there is no relative rotation between the sun gear and the planetary gears, and the transmission ratio remains unchanged; when the seventh clutch X is disengaged, there is relative rotation between the sun gear and the planetary gears, power is input from the sun gear and output from the planetary carrier, and the transmission ratio changes.

[0098] In one embodiment of this utility model, the eighth clutch Y is connected to the planetary gears of the planetary gear set M2 and the third transmission shaft 6. When the eighth clutch X is engaged, there is no relative rotation between the sun gear and the planetary gears, and the transmission ratio remains unchanged; when the eighth clutch X is disengaged, there is relative rotation between the sun gear and the planetary gears, power is input from the sun gear and output from the planetary carrier, and the transmission ratio changes.

[0099] In one embodiment of this utility model, the first clutch A, the second clutch B, the third clutch C, the fourth clutch D, the fifth clutch F, the sixth clutch R, the seventh clutch X, and the eighth clutch Y are all wet clutches.

[0100] In one embodiment of this utility model, the first clutch A, the second clutch B, the third clutch C, and the fourth clutch D are power shift wet clutches in the front gearbox; the fifth clutch F and the sixth clutch R are power reversing wet clutches.

[0101] In one embodiment of this utility model, planetary gear set two M1 and planetary gear set three M2 are power shift planetary gear sets in the rear box.

[0102] In one embodiment of this invention, a seventh gear 13 is further provided. The seventh gear 13 is connected to the first clutch A and is mounted on the fifth transmission shaft 14, one end of which is connected to the PTO. This invention can also provide power for external tools.

[0103] In one embodiment of this invention, the front axle clutch 10 is connected to the sixth drive shaft 15, and one end of the sixth drive shaft 15 meshes with the central main reduction gear of the front axle transmission gearbox. This invention can also provide power for four-wheel drive. When the clutch is not engaged with the front axle clutch, only the rear wheels are driven; when the clutch is engaged with the front axle clutch, both the front and rear wheels are driven simultaneously.

[0104] In one embodiment of this utility model, a first drive gear 16 and a second drive gear 17 are fixedly mounted on the first drive shaft 1, and a driven gear 18 and a second driven gear 19 are movably mounted on the first drive shaft 1. A first clutch A is connected to the first drive gear 16 and the second driven gear 18, and a second clutch B is connected to the second drive gear 17 and the second driven gear 19.

[0105] The second drive shaft 2 is fixedly fitted with drive gear 3 20 and drive gear 4 21, and driven gear 3 22 and driven gear 4 23 are loosely fitted on the second drive shaft 2. The third clutch C is connected to drive gear 3 20 and driven gear 3 22, and the fourth clutch D is connected to drive gear 4 21 and driven gear 4 23.

[0106] Driven gear 16 meshes with driven gear 322, driven gear 18 meshes with drive gear 320, driven gear 423 meshes with drive gear 217, and driven gear 219 meshes with drive gear 421.

[0107] The third drive shaft 6 is fitted with an eighth gear 24 and a ninth gear 25. The fifth clutch F is connected to the eighth gear 24, the sixth clutch R is connected to the ninth gear 25, the eighth gear 24 meshes with the first gear 3, and the ninth gear 25 meshes with the fourth gear 9.

[0108] This invention uses a combination of a fixed-axis wet clutch and a planetary gear set to achieve full-power shifting without switching to crawler gears. This solves the problems of cumbersome operation, non-compact structure, low transmission efficiency, and complex control. It can achieve up to 32 forward gears and 32 reverse gears.

[0109] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-gear power shift transmission, characterized in that, include: A first drive shaft, one end of which is connected to the engine, and a first clutch and a second clutch are mounted on the first drive shaft; The second drive shaft, the first gear, the second gear, the third clutch and the fourth clutch are mounted on the second drive shaft. The first clutch is connected to the third clutch, the second clutch is connected to the fourth clutch, the first gear is connected to the fifth clutch, and the second gear meshes with the third gear. The third drive shaft, the fifth clutch, the sixth clutch, the seventh clutch, the eighth clutch, planetary gear set one, planetary gear set two, planetary gear set three and the fifth gear are mounted on the third drive shaft; The fourth drive shaft, the third gear and the fourth gear are mounted on the fourth drive shaft, and the fourth gear is connected to the sixth clutch; The fifth gear is connected to the drive gear of the front axle clutch and the sixth gear, and the sixth gear is connected to the central transmission gearbox.

2. The multi-gear power shift transmission according to claim 1, characterized in that, The seventh clutch is connected to the planetary gears of planetary gear set one and the third drive shaft.

3. A multi-gear power shift transmission according to claim 1, characterized in that, The eighth clutch is connected to the planetary gears of planetary gear set two and the third drive shaft.

4. A multi-gear power shift transmission according to claim 1, characterized in that, The first, second, third, fourth, fifth, sixth, seventh, and eighth clutches are all wet clutches.

5. A multi-gear power shift transmission according to claim 4, characterized in that, The first, second, third, and fourth clutches are wet power shift clutches in the front gearbox; the fifth and sixth clutches are wet power reversing clutches.

6. A multi-gear power shift transmission according to claim 1, characterized in that, Planetary gear set two and planetary gear set three are power shift planetary gear sets in the rear compartment.

7. A multi-gear power shift transmission according to claim 1, characterized in that, It also has a seventh gear, which is connected to the first clutch and is mounted on the fifth drive shaft.

8. A multi-gear power shift transmission according to claim 1, characterized in that, The front axle clutch is connected to the sixth drive shaft, and one end of the sixth drive shaft meshes with the central main reduction gear of the front axle drive gearbox.

9. A multi-gear power shift transmission according to claim 1, characterized in that, The first drive shaft is fixedly fitted with a first drive gear and a second drive gear, and the first drive shaft is loosely fitted with a first driven gear and a second driven gear. The first clutch is connected to the first drive gear and the first driven gear, and the second clutch is connected to the second drive gear and the second driven gear. The second drive shaft is fixedly fitted with drive gear three and drive gear four, and the second drive shaft is loosely fitted with driven gear three and driven gear four. The third clutch is connected to drive gear three and driven gear three, and the fourth clutch is connected to drive gear four and driven gear four. Driven gear one meshes with driven gear three, driven gear one meshes with drive gear three, driven gear four meshes with drive gear two, and driven gear two meshes with drive gear four; The third drive shaft is fitted with the eighth and ninth gears. The fifth clutch is connected to the eighth gear, the sixth clutch is connected to the ninth gear, the eighth gear meshes with the first gear, and the ninth gear meshes with the fourth gear.

Images