An engineering vehicle transmission

Abstract

The application discloses an engineering vehicle transmission, adopts a transmission system arrangement mode combining a power shift module and a synchronous shift module, and realizes more gear numbers. The synchronous shift module can realize large-range adjustment of vehicle speed, the power shift module can realize small-range adjustment of vehicle speed, and the two are used in series, so that more gear numbers can make the speed change range of the vehicle wider and the output torque range larger, so that the vehicle can better adapt to various complex road conditions and working conditions. During operation, power shift can be realized, the vehicle does not appear power interruption, has better working condition adaptability, and improves operation efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of transmission, in particular to an engineering vehicle transmission. BACKGROUND

[0002] With the rapid advancement of modernization, power shift transmission has gradually entered the new market stage, and has been more and more widely used in many fields such as agricultural machinery, mining machinery, construction machinery and special vehicles. Compared with ordinary manual transmission, power shift transmission not only has more gears, but also does not interrupt power during gear shifting, can adapt to wider speed regulation range and larger load change, so as to meet the needs of complex road conditions and working conditions.

[0003] Power shift transmission first appeared on D9E crawler tractor, and caused widespread attention in the industry as soon as it appeared. In 1982, the power shift transmission used on the tractor first realized electronic power shift. In the 1990s, T series power shift transmission appeared. At present, power shift transmission has been widely used in large power tractors and engineering machinery fields.

[0004] The fixed shaft type power shift transmission was first used on Z435 loader, and the hydraulic transmission planetary type power shift transmission was first matched on ZL50 loader. The main machine factory mainly uses power shift transmission on road rollers, forklifts, bulldozers, graders and loaders. Until 2010, the application of power shift transmission on large power tractors began, and great breakthroughs have been made in related technologies.

[0005] In the existing commercial vehicle transmission, the cost of AT (automatic transmission) and CVT (continuously variable transmission) is too high, and the gear positions of other manual and automatic transmissions are too few, and only suitable for small power vehicles, not suitable for current large power vehicle use requirements. A power shift transmission with more gears and suitable for large power vehicles is needed to be developed to ensure vehicle performance requirements. SUMMARY

[0006] The purpose of the present application is to solve the problems in the prior art and provide an engineering vehicle transmission.

[0007] To achieve the above purpose, the following technical scheme is adopted in the present application:

[0008] An engineering vehicle transmission comprises a power shift module, a power direction module, a synchronous gear shift module, a rear drive power take-off module and a front drive power take-off module.

[0009] The power shift module is connected to the power direction module, the power direction module is connected to the synchronous gear shift module, the synchronous gear shift module is connected to the rear drive power take-off module, and the synchronous gear shift module is connected to the front drive power take-off module.

[0010] The first wet clutch in the power shift module is installed on the first transmission shaft, the first wet clutch is connected with the second wet clutch, the first wet clutch is connected with the third wet clutch, the third wet clutch is connected with the fourth wet clutch, the second wet clutch, the third wet clutch and the fourth wet clutch are all installed on the second transmission shaft, the first wet clutch is connected with the fifth wet clutch, the first wet clutch is connected with the sixth wet clutch, the sixth wet clutch is connected with the seventh wet clutch, the fifth wet clutch, the sixth wet clutch and the seventh wet clutch are all installed on the third transmission shaft, the fourth gear is installed on the second transmission shaft, the fourth gear is engaged with the eighth gear, and the eighth gear is installed on the first transmission shaft.

[0011] The eighth wet clutch in the power shift module is installed on the fourth transmission shaft, and the eighth wet clutch is connected with the ninth wet clutch, and the ninth wet clutch is installed on the sixth transmission shaft.

[0012] One end of the first synchronizer in the synchronous shift module is installed on the eighth transmission shaft, the other end of the first synchronizer is installed on the ninth transmission shaft, the nineteenth gear is installed on the eighth transmission shaft, the nineteenth gear is engaged with the eighteenth gear, the eighteenth gear is installed on the seventh transmission shaft, the second synchronizer, the third synchronizer, the fourth synchronizer and the fifth synchronizer are installed on the seventh transmission shaft, the second synchronizer and the third synchronizer are integrated, the third synchronizer is connected with the fourth synchronizer, and the fourth synchronizer and the fifth synchronizer are integrated.

[0013] Further, the first transmission shaft in the power shift module is connected with the engine crankshaft in the engine through the spline.

[0014] Further, the first wet clutch is connected with a hollow shaft through spline, the hollow shaft is sleeved on the second transmission shaft, the fifth gear, the sixth gear and the seventh gear are installed on the hollow shaft through spline, the second wet clutch is connected with the first gear through spline, the first gear is engaged with the fifth gear, the fifth gear is engaged with the tenth gear, the fifth wet clutch is connected with the tenth gear through spline, the third wet clutch is connected with the second gear through spline, the second gear is engaged with the sixth gear, the sixth wet clutch is connected with the eleventh gear through spline, the sixth gear is engaged with the eleventh gear, the fourth wet clutch is connected with the third gear through spline, the third gear is engaged with the ninth gear, the ninth gear is engaged with the seventh gear, the seventh gear is engaged with the twelfth gear, the twelfth gear is connected with the seventh wet clutch through spline, the first gear, the second gear and the third gear are all installed on the second transmission shaft through sleeve, the tenth gear, the eleventh gear and the twelfth gear are all installed on the third transmission shaft through sleeve.

[0015] Further, the third transmission shaft in the power shifting module is connected with the fourth transmission shaft in the power reversing module through spline.

[0016] Further, the eighth wet clutch is connected with the sixteenth gear, the sixteenth gear is sleeved on the fourth transmission shaft, the sixteenth gear is engaged with the fifteenth gear, the fifteenth gear is engaged with the thirteenth gear, the thirteenth gear is installed on the fifth transmission shaft through spline, the fourteenth gear is installed on the fifth transmission shaft, the fourteenth gear is engaged with the seventeenth gear, the seventeenth gear is installed on the sixth transmission shaft through spline.

[0017] Further, the sixth transmission shaft in the power reversing module is connected with the eighth transmission shaft in the synchronous shifting module through spline, one end of the eighth transmission shaft is sleeved with the ninth transmission shaft.

[0018] Further, the second synchronizer is connected with the twentieth gear, the twentieth gear is engaged with the twenty-first gear, the third synchronizer is connected with the twenty-second gear, the twenty-second gear is engaged with the twenty-third gear, the fourth synchronizer is connected with the twenty-fourth gear, the twenty-fourth gear is engaged with the twenty-fifth gear, the fifth synchronizer is connected with the twenty-sixth gear, the twenty-sixth gear is engaged with the twenty-seventh gear, the twentieth gear, the twenty-second gear, the twenty-fourth gear and the twenty-sixth gear are all installed on the seventh transmission shaft through sleeve, the twenty-first gear, the twenty-third gear, the twenty-fifth gear and the twenty-seventh gear are all installed on the ninth transmission shaft through spline.

[0019] Further, the other end of the ninth transmission shaft is a bevel gear, the bevel gear is connected with the rear drive power take-off module.

[0020] Further, the front drive module is connected with the twenty-eighth gear, and the twenty-eighth gear is installed on the ninth transmission shaft between the first synchronizer and the twenty-first gear through a spline.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] The present application designs an engineering vehicle transmission, which adopts a transmission system arrangement mode of combination of a power shift module and a synchronous shift module as a whole, realizes selection of more gear numbers, can achieve a wider speed regulation range and better load adaptability, and more gear numbers can make the speed variation range of the vehicle wider and the output torque range larger, so that the vehicle can better adapt to various complex road conditions and working conditions; the synchronous shift module can realize large-range adjustment of the vehicle speed, the power shift module can realize small-range adjustment of the vehicle speed, and the combination of the two can realize smooth change of the vehicle speed in a wide range. Secondly, the front drive module and the rear drive module can guarantee four-wheel drive of the vehicle. Meanwhile, power shift can be realized during operation, so that the vehicle does not appear power interruption, and the operation efficiency is improved.

[0023] The present application adopts modular design, can increase, decrease or change single module or multiple modules according to specific needs, expands the use range of the transmission, solves the transmission demand problem of current high-power machinery, makes it have more gears and better working condition adaptability, and further fills the blank of high-power power shift transmission. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and other related drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0025] Figure 1 It is a schematic diagram of the transmission route of the present application.

[0026] Figure 2 It is a schematic diagram of the engine module of the present application.

[0027] Figure 3 It is a schematic diagram of the power shift module of the present application.

[0028] Figure 4 It is a schematic diagram of the power shift module of the present application.

[0029] Figure 5Fig. 1 is a schematic diagram of a synchronous gear shifting module according to the present application. In the figure: 01-engine, 02-power gear shifting module, 03-power gear reversing module, 04-synchronous gear shifting module, 05-rear drive power take-off module, 06-front drive power take-off module, 11-first gear, 12-second gear, 13-third gear, 14-fourth gear, 15-fifth gear, 16-sixth gear, 17-seventh gear, 18-eighth gear, 19-ninth gear, 20-tenth gear, 21- eleventh gear, 22-twelfth gear, 23-thirteenth gear, 24-fourteenth gear, 25-fifteenth gear, 26-sixteenth gear, 27-seventeenth gear, A0-eighteenth gear, A1-nineteenth gear, B0-twentieth gear, B1-twenty-first gear, C0-twenty-second gear, C1-twenty-third gear, D0-twenty-fourth gear, D1-twenty-fifth gear, E0-twenty-sixth gear, E1-twenty-seventh gear, 60-twenty-eighth gear, 71-bevel gear, a-first wet clutch, b-second wet clutch, c-third wet clutch, d-fourth wet clutch, e-fifth wet clutch, f-sixth wet clutch, g-seventh wet clutch, R-eighth wet clutch, F-ninth wet clutch, A-first synchronizer, B-second synchronizer, C-third synchronizer, D-fourth synchronizer, E-fifth synchronizer, Z1-engine crankshaft, Z2-first drive shaft, Z3-second drive shaft, Z4-third drive shaft, Z5-fourth drive shaft, Z6-fifth drive shaft, Z7-sixth drive shaft, Z8-seventh drive shaft, Z9-eighth drive shaft, Z10-ninth drive shaft. DETAILED DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0032] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product of the present application when it is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The present application will be described in further detail below in conjunction with the accompanying drawings:

[0037] Referring to Figures 1 to 5 The present application provides an engineering vehicle transmission, comprising an engine 01, a power shift module 02, a power reversing module 03, a synchronous shift module 04, a rear drive power take-off module 05 and a front drive power take-off module 06.

[0038] The engine 01 is connected to the first transmission shaft Z2 in the power shift module 02 through the engine crankshaft Z1, and the engine crankshaft Z1 and the first transmission shaft Z2 are connected through spline connection to provide power for the operation of the transmission. The first wet clutch a in the power shift module 02 is installed on the first transmission shaft Z2 through spline connection, the second wet clutch b, the third wet clutch c and the fourth wet clutch d are all installed on the second transmission shaft Z3, wherein the third wet clutch c is connected to the fourth wet clutch d, the fifth wet clutch e, the sixth wet clutch f and the seventh wet clutch g are all installed on the third transmission shaft Z4, wherein the sixth wet clutch f is connected to the seventh wet clutch g. The first wet clutch a is connected to the hollow shaft through spline connection, the fifth gear 15, the sixth gear 16 and the seventh gear 17 are installed on the hollow shaft through spline connection, the hollow shaft is installed on the first transmission shaft Z2 in a hollow sleeve manner, the second wet clutch b is connected to the first gear 11 through spline connection, the first gear 11 is engaged with the fifth gear 15, the fifth gear 15 is engaged with the tenth gear 20, the fifth wet clutch e is connected to the tenth gear 20 through spline connection, the third wet clutch c is connected to the second gear 12 through spline connection, the second gear 12 is engaged with the sixth gear 16, the sixth wet clutch f is connected to the eleventh gear 21 through spline connection, the sixth gear 16 is engaged with the eleventh gear 21, the fourth wet clutch d is connected to the third gear 13 through spline connection, the third gear 13 is engaged with the ninth gear 19, the ninth gear 19 is engaged with the seventh gear 17, the seventh gear 17 is engaged with the twelfth gear 22, and the twelfth gear 22 is connected to the seventh wet clutch g through spline connection. The first gear 11, the second gear 12 and the third gear 13 are all installed on the second transmission shaft Z3 in a hollow sleeve manner, and the tenth gear 20, the eleventh gear 21 and the twelfth gear 22 are all installed on the third transmission shaft Z4 in a hollow sleeve manner. The fourth gear 14 is installed on the second transmission shaft Z3, the fourth gear 14 is engaged with the eighth gear 18, and the eighth gear 18 is installed on the first transmission shaft Z2.

[0039] The third transmission shaft Z4 is connected to the fourth transmission shaft Z5 in the power shift module 03 through spline connection, the eighth wet clutch R in the power shift module 03 is installed on the fourth transmission shaft Z5, the eighth wet clutch R is connected to the sixteenth gear 26 through spline connection, the sixteenth gear 26 is installed on the fourth transmission shaft Z5 in a hollow sleeve manner, the sixteenth gear 26 is engaged with the fifteenth gear 25, the fifteenth gear 25 is engaged with the thirteenth gear 23, and the thirteenth gear 23 is installed on the fifth transmission shaft Z6 through spline connection; the fourteenth gear 24 is installed on the fifth transmission shaft Z6, the fourteenth gear 24 is engaged with the seventeenth gear 27, the seventeenth gear 27 is installed on the sixth transmission shaft Z7 through spline connection, the ninth wet clutch F is installed on the sixth transmission shaft Z7, and the eighth wet clutch R is connected to the ninth wet clutch F.

[0040] The sixth drive shaft Z7 is connected via a spline to the eighth drive shaft Z9 in the synchronous shift module 04. One end of the first synchronizer A in the synchronous shift module 04 is mounted on the eighth drive shaft Z9, and the other end is mounted on the ninth drive shaft Z10. The eighth drive shaft Z9 is loosely connected to one end of the ninth drive shaft Z10. The other end of the ninth drive shaft Z10 is connected to the rear drive power take-off module 05 via a bevel gear 71. The bevel gear 71 is directly machined on the ninth drive shaft Z10 and is integral with the shaft. The nineteenth gear A1 is mounted on the eighth drive shaft Z9, and the nineteenth gear A1 meshes with the eighteenth gear A0. The eighteenth gear A0 is mounted on the seventh drive shaft Z8. Synchronizers B, C, D, and E are all mounted on the seventh drive shaft Z8. Synchronizer B and C are integrated into one unit, with B connecting to the twentieth gear B0, which meshes with the twentieth gear B1. Synchronizer C connects to the twentieth gear C0, which meshes with the twentieth gear C1. Synchronizer D and E are integrated into one unit, with D connecting to the twentieth gear D0, which meshes with the twentieth gear D1. Synchronizer E connects to the twentieth gear E0, which meshes with the twentieth gear E1. Gears B0, C0, D0, and E0 are loosely mounted on the seventh drive shaft Z8. Gears B1, C1, D1, and E1 are splined onto the ninth drive shaft Z10.

[0041] A twenty-eighth gear 60 is installed between the first synchronizer A and the twenty-first gear B1, and the front drive power take-off module 06 is connected to the ninth drive shaft Z10 through the twenty-eighth gear 60.

[0042] The power transmission route of the engineering vehicle transmission of the present invention is as follows:

[0043] The power of engine 01 is transmitted from engine crankshaft Z1 to the first drive shaft Z2 of power shift module 02;

[0044] In the power shift module 02, any one of the four wet clutches (first wet clutch a, second wet clutch b, third wet clutch c, and fourth wet clutch d) can be engaged with any one of the three wet clutches (fth wet clutch e, sixth wet clutch f, and seventh wet clutch g) (gourd). Therefore, the power shift module 02 has 4×3 transmission routes, meaning it can output 12 speeds under a single input. The 12 transmission routes of the power shift module 02 are as follows:

[0045] Gear 1 : the first wet clutch a is combined with the fifth wet clutch e, power is transmitted from the first transmission shaft Z2 to the first wet clutch a, and then from the first wet clutch a to the fifth wet clutch e through the meshing of the fifth gear 15 and the tenth gear 20, and the fifth wet clutch e transmits the power to the third transmission shaft Z4;

[0046] Gear 2: the first wet clutch a is combined with the sixth wet clutch f, power is transmitted from the first transmission shaft Z2 to the first wet clutch a, and then from the first wet clutch a to the sixth wet clutch f through the meshing of the sixth gear 16 and the eleventh gear 21, and the sixth wet clutch f transmits the power to the third transmission shaft Z4;

[0047] Gear 3: the first wet clutch a is combined with the seventh wet clutch g, power is transmitted from the first transmission shaft Z2 to the first wet clutch a, and then from the first wet clutch a to the seventh wet clutch g through the meshing of the seventh gear 17 and the twelfth gear 22, and the seventh wet clutch g transmits the power to the third transmission shaft Z4;

[0048] Gear 4: the second wet clutch b is combined with the fifth wet clutch e, power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the second wet clutch b, and then from the second wet clutch b to the fifth wet clutch e through the meshing of the first gear 11, the fifth gear 15 and the tenth gear 20, and the fifth wet clutch e transmits the power to the third transmission shaft Z4;

[0049] Gear 5: the second wet clutch b is combined with the sixth wet clutch f, power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the second wet clutch b, and then from the second wet clutch b to the sixth wet clutch f through the meshing of the first gear 11, the fifth gear 15, the sixth gear 16 and the eleventh gear 21, and the sixth wet clutch f transmits the power to the third transmission shaft Z4;

[0050] Gear 6: the second wet clutch b is combined with the seventh wet clutch g, power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the second wet clutch b, and then from the second wet clutch b to the seventh wet clutch g through the meshing of the first gear 11, the fifth gear 15, the seventh gear 17 and the twelfth gear 22, and the seventh wet clutch g transmits the power to the third transmission shaft Z4;

[0051] Gear 7: The third wet clutch c is combined with the fifth wet clutch e, the power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the third wet clutch c, and then the power is transmitted from the third wet clutch c to the fifth wet clutch e through the meshing of the second gear 12, the sixth gear 16, the fifth gear 15 and the tenth gear 20, the fifth wet clutch e transmits the power to the third transmission shaft Z4;

[0052] Gear 8: The third wet clutch c is combined with the sixth wet clutch f, the power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the third wet clutch c, and then the power is transmitted from the third wet clutch c to the sixth wet clutch f through the meshing of the second gear 12, the sixth gear 16 and the eleventh gear 21, the sixth wet clutch f transmits the power to the third transmission shaft Z4;

[0053] Gear 9: The third wet clutch c is combined with the seventh wet clutch g, the power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the third wet clutch c, and then the power is transmitted from the third wet clutch c to the seventh wet clutch g through the meshing of the second gear 12, the sixth gear 16, the seventh gear 17 and the twelfth gear 22, the seventh wet clutch g transmits the power to the third transmission shaft Z4;

[0054] Gear 10: The fourth wet clutch d is combined with the fifth wet clutch e, the power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the fourth wet clutch d, and then the power is transmitted from the fourth wet clutch d to the fifth wet clutch e through the meshing of the third gear 13, the ninth gear 19, the seventh gear 17, the fifth gear 15 and the tenth gear 20, the fifth wet clutch e transmits the power to the third transmission shaft Z4;

[0055] Gear 11: The fourth wet clutch d is combined with the sixth wet clutch f, the power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the fourth wet clutch d, and then the power is transmitted from the fourth wet clutch d to the sixth wet clutch f through the meshing of the third gear 13, the ninth gear 19, the seventh gear 17, the sixth gear 16 and the eleventh gear 21, the sixth wet clutch f transmits the power to the third transmission shaft Z4;

[0056] Gear 12: the fourth wet clutch d is combined with the seventh wet clutch g, the power is transmitted from the first transmission shaft Z2 to the second transmission shaft Z3 through the meshing of the eighth gear 18 and the fourth gear 14, the second transmission shaft Z3 transmits the power to the fourth wet clutch d, and then the power is transmitted from the fourth wet clutch d to the seventh wet clutch g through the meshing of the third gear 13, the ninth gear 19, the seventh gear 17 and the twelfth gear 22, and the seventh wet clutch g transmits the power to the third transmission shaft Z4.

[0057] The power shifting module 02 transmits the power to the fourth transmission shaft Z5 in the power reversing module 03 through the third transmission shaft Z4;

[0058] The power transmitted by the fourth transmission shaft Z5 is combined with any one of the eighth wet clutch R and the ninth wet clutch F in the power reversing module 03 (only 2 options are allowed); it can be seen that the power reversing module 03 can output 2 speeds under single input; the two power transmission routes of the power reversing module 03 are respectively:

[0059] Gear R: the eighth wet clutch R is in meshing state, the power is transmitted from the fourth transmission shaft Z5 to the eighth wet clutch R, and then transmitted from the eighth wet clutch R to the fifth transmission shaft Z6 through the meshing of the sixteenth gear 26, the fifteenth gear 25 and the thirteenth gear 23, and the fifth transmission shaft Z6 transmits the power to the sixth transmission shaft Z7 through the meshing of the fourteenth gear 24 and the seventeenth gear 27;

[0060] Gear F: the ninth wet clutch F is in meshing state, the power is transmitted from the fourth transmission shaft Z5 to the ninth wet clutch F, and then transmitted to the sixth transmission shaft Z7 from the ninth wet clutch F.

[0061] The power reversing module 03 transmits the power to the eighth transmission shaft Z9 in the synchronous shifting module 04 through the sixth transmission shaft Z7;

[0062] The power transmitted by the eighth transmission shaft Z9 is combined with any one of the first synchronizer A, the second synchronizer B, the third synchronizer C, the fourth synchronizer D and the fifth synchronizer E in the synchronous shifting module 04 (only 5 options are allowed); it can be seen that the synchronous shifting module 04 can output 5 speeds under single input; the five power transmission routes of the synchronous shifting module 04 are respectively:

[0063] Gear a: the first synchronizer A is in meshing state, the power is transmitted from the eighth transmission shaft Z9 to the first synchronizer A, and then transmitted to the ninth transmission shaft Z10 from the first synchronizer A;

[0064] Gear b: the second synchronizer B is in the engaged state, the power is transmitted from the eighth transmission shaft Z9 to the seventh transmission shaft Z8 through the engagement of the nineteenth gear A1 and the eighteenth gear A0, and then transmitted from the seventh transmission shaft Z8 to the second synchronizer B, and the second synchronizer B transmits the power to the ninth transmission shaft Z10 through the engagement of the twentieth gear B0 and the twenty-first gear B1;

[0065] Gear c: the third synchronizer C is in the engaged state, the power is transmitted from the eighth transmission shaft Z9 to the seventh transmission shaft Z8 through the engagement of the nineteenth gear A1 and the eighteenth gear A0, and then transmitted from the seventh transmission shaft Z8 to the third synchronizer C, and the third synchronizer C transmits the power to the ninth transmission shaft Z10 through the engagement of the twenty-second gear C0 and the twenty-third gear C1;

[0066] Gear d: the fourth synchronizer D is in the engaged state, the power is transmitted from the eighth transmission shaft Z9 to the seventh transmission shaft Z8 through the engagement of the nineteenth gear A1 and the eighteenth gear A0, and then transmitted from the seventh transmission shaft Z8 to the fourth synchronizer D, and the fourth synchronizer D transmits the power to the ninth transmission shaft Z10 through the engagement of the twenty-fourth gear D0 and the twenty-fifth gear D1;

[0067] Gear e: the fifth synchronizer E is in the engaged state, the power is transmitted from the eighth transmission shaft Z9 to the seventh transmission shaft Z8 through the engagement of the nineteenth gear A1 and the eighteenth gear A0, and then transmitted from the seventh transmission shaft Z8 to the fifth synchronizer E, and the fifth synchronizer E transmits the power to the ninth transmission shaft Z10 through the engagement of the twenty-sixth gear E0 and the twenty-seventh gear E1.

[0068] At this time, the synchronous gear shifting module 04 transmits the power from the ninth transmission shaft Z10 to the rear drive power take-off module 05 through the bevel gear 71; at the same time, the power is transmitted from the ninth transmission shaft Z10 to the front drive power take-off module 06 through the twenty-eighth gear 60;

[0069] Up to now, the power of the engine 01 has been transmitted to the two drive modules, and the operation is completed.

[0070] The present application adopts the transmission system arrangement mode combining the power gear shifting module 02 and the synchronous gear shifting module 04, and there are 4*3*2*5 power transmission routes available, realizing more gear number selection. The synchronous gear shifting module 04 can realize a larger range of vehicle speed adjustment, and the power gear shifting module 02 can realize a small range of vehicle speed adjustment. The two are used in series, and more gear numbers can make the vehicle have a wider speed range and a larger torque range, so that the vehicle can have a wider speed coverage range and better working condition adaptability. The front drive power take-off module 06 and the rear drive power take-off module 05 can ensure that the vehicle realizes four-wheel drive, and at the same time, power gear shifting can be realized during operation, so that the vehicle does not appear power interruption, has better working condition adaptability, and improves the operation efficiency.

[0071] The above merely provides the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the scope of protection of the present application.

Claims

1. A transmission for engineering vehicles, characterized in that, It includes a power shift module (02), a power reversing module (03), a synchronous shift module (04), a rear-wheel drive power take-off module (05), and a front-wheel drive power take-off module (06). The power shift module (02) is connected to the power reversing module (03), the power reversing module (03) is connected to the synchronous shift module (04), the synchronous shift module (04) is connected to the rear drive power take-off module (05), and the synchronous shift module (04) is connected to the front drive power take-off module (06). The first wet clutch (a) in the power shift module (02) is mounted on the first drive shaft (Z2). The first wet clutch (a) is connected to the second wet clutch (b). The first wet clutch (a) is connected to the third wet clutch (c). The third wet clutch (c) is connected to the fourth wet clutch (d). The second wet clutch (b), the third wet clutch (c), and the fourth wet clutch (d) are all mounted on the second drive shaft (Z3). The first wet clutch (a) is connected to the fifth wet clutch (e). The first wet clutch (a) is connected to the sixth wet clutch (f). The sixth wet clutch (f) is connected to the seventh wet clutch (g). The fifth wet clutch (e), the sixth wet clutch (f), and the seventh wet clutch (g) are all mounted on the third drive shaft (Z4). A fourth gear (14) is mounted on the second drive shaft (Z3). The fourth gear (14) meshes with an eighth gear (18). The eighth gear (18) is mounted on the first drive shaft (Z2). The eighth wet clutch (R) in the power reversing module (03) is mounted on the fourth drive shaft (Z5), and the eighth wet clutch (R) is connected to the ninth wet clutch (F), which is mounted on the sixth drive shaft (Z7). One end of the first synchronizer (A) in the synchronous shifting module (04) is mounted on the eighth drive shaft (Z9), and the other end of the first synchronizer (A) is mounted on the ninth drive shaft (Z10). The nineteenth gear (A1) is mounted on the eighth drive shaft (Z9), and the nineteenth gear (A1) meshes with the eighteenth gear (A0). The eighteenth gear (A0) is mounted on the seventh drive shaft (Z8). The seventh drive shaft (Z8) is mounted with a second synchronizer (B), a third synchronizer (C), a fourth synchronizer (D), and a fifth synchronizer (E). The second synchronizer (B) and the third synchronizer (C) are integrated. The third synchronizer (C) is connected to the fourth synchronizer (D). The fourth synchronizer (D) and the fifth synchronizer (E) are integrated. The power of the engine (01) is transmitted from the engine crankshaft (Z1) to the first drive shaft (Z2) of the power shift module (02). The power shift module (02) transmits power to the fourth drive shaft (Z5) in the power reversing module (03) via the third drive shaft (Z4). The power reversing module (03) transmits power to the eighth drive shaft (Z9) in the synchronous shifting module (04) via the sixth drive shaft (Z7). The other end of the ninth drive shaft (Z10) is a bevel gear (71), which is connected to the rear drive power take-off module (05). A 28th gear (60) is installed between the first synchronizer (A) and the 21st gear (B1), and the front drive power take-off module (06) is connected to the ninth drive shaft (Z10) through the 28th gear (60).

2. The engineering vehicle transmission according to claim 1, characterized in that, The first drive shaft (Z2) in the power shift module (02) is connected to the engine crankshaft (Z1) in the engine (01) via a spline.

3. The engineering vehicle transmission according to claim 1, characterized in that, The first wet clutch (a) is connected to a hollow shaft via a spline. The hollow shaft is loosely fitted onto the second transmission shaft (Z3). A fifth gear (15), a sixth gear (16), and a seventh gear (17) are mounted on the hollow shaft via splines. The second wet clutch (b) is connected to a first gear (11) via a spline. The first gear (11) meshes with the fifth gear (15). The fifth gear (15) meshes with the tenth gear (20). The fifth wet clutch (e) is connected to the tenth gear (20) via a spline. The third wet clutch (c) is connected to a second gear (12) via a spline. The second gear (12) meshes with the sixth gear (16). The sixth wet clutch (f) is connected to... The eleventh gear (21) is connected to the sixth gear (16), which meshes with the eleventh gear (21). The fourth wet clutch (d) is connected to the third gear (13) via a spline. The third gear (13) meshes with the ninth gear (19). The ninth gear (19) meshes with the seventh gear (17). The seventh gear (17) meshes with the twelfth gear (22). The twelfth gear (22) is connected to the seventh wet clutch (g) via a spline. The first gear (11), the second gear (12), and the third gear (13) are all loosely mounted on the second drive shaft (Z3). The tenth gear (20), the eleventh gear (21), and the twelfth gear (22) are all loosely mounted on the third drive shaft (Z4).

4. A transmission for engineering vehicles according to claim 1, characterized in that, The third drive shaft (Z4) in the power shift module (02) is connected to the fourth drive shaft (Z5) in the power reversing module (03) via a spline.

5. A transmission for engineering vehicles according to claim 1, characterized in that, The eighth wet clutch (R) is connected to the sixteenth gear (26), which is loosely fitted on the fourth drive shaft (Z5). The sixteenth gear (26) meshes with the fifteenth gear (25), which meshes with the thirteenth gear (23). The thirteenth gear (23) is mounted on the fifth drive shaft (Z6) via a spline. The fourteenth gear (24) is mounted on the fifth drive shaft (Z6), which meshes with the seventeenth gear (27). The seventeenth gear (27) is mounted on the sixth drive shaft (Z7) via a spline.

6. A transmission for engineering vehicles according to claim 1, characterized in that, The sixth drive shaft (Z7) in the power reversing module (03) is connected to the eighth drive shaft (Z9) in the synchronous shifting module (04) via a spline, and the eighth drive shaft (Z9) is loosely connected to one end of the ninth drive shaft (Z10).

7. A transmission for engineering vehicles according to claim 1, characterized in that, The second synchronizer (B) is connected to the twentieth gear (B0), which meshes with the twentieth gear (B1). The third synchronizer (C) is connected to the twentieth gear (C0), which meshes with the twentieth gear (C1). The fourth synchronizer (D) is connected to the twentieth gear (D0), which meshes with the twentieth gear (D1). The fifth synchronizer (E) is connected to the twentieth gear (E0), which meshes with the twentieth gear (E1). The twentieth gear (B0), twentieth gear (C0), twentieth gear (D0), and twentieth gear (E0) are all loosely mounted on the seventh drive shaft (Z8). The twentieth gear (B1), twentieth gear (C1), twentieth gear (D1), and twentieth gear (E1) are all mounted on the ninth drive shaft (Z10) via splines.

8. A transmission for engineering vehicles according to claim 1, characterized in that, The front drive power take-off module (06) is connected to the 28th gear (60), which is mounted on the 9th drive shaft (Z10) between the first synchronizer (A) and the 21st gear (B1) via a spline.

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