Direct connection type electric tractor transmission system with double motors arranged front and back

Abstract

The utility model relates to a direct connection type electric tractor transmission system with double motors arranged front and back, and belongs to the field of tractor transmission. Comprising a walking power motor, a power output motor, a gearbox structure, a rear axle assembly structure, a front drive assembly structure and a power output structure. The walking power motor and the power output motor are arranged on the tractor side by side front and back, the walking power motor is connected with the gearbox structure, the front end and the rear end of the gearbox structure are connected with the front drive assembly structure and the rear axle assembly structure respectively, and power output by the walking power motor is transmitted to the front drive assembly structure and the rear axle assembly structure. The power output motor is connected with the power output structure, and power output by the power output motor is transmitted to the power output structure. The walking power motor and the power output motor are arranged front and back, so that walking of the tractor and matched power equipment are mutually independent and do not interfere with each other, the driving force of walking and working of the tractor is improved, and the tractor is suitable for both large and small types and high in universality.

Description

Technical Field

[0001] This utility model relates to the field of tractor transmission, and in particular to a dual-motor direct-drive electric tractor transmission system with front and rear direct coupling. Background Technology

[0002] Currently, most tractors are engine-driven, which suffers from problems such as complex structure, high cost, high fuel consumption, and environmental pollution from exhaust fumes. In contrast, direct-drive electric transmission systems are simpler in design, more efficient, more compact in structure, and save on materials. Furthermore, most existing electric tractors are modifications of existing engines, using a single motor to drive the tractor and external power equipment; these are mostly single-motor conversions from gasoline to electric designs, resulting in a single power source and insufficient power. Moreover, for smaller tractors, the limited lateral space makes a side-by-side arrangement of the travel and power output motors inflexible and lacking in versatility. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a dual-motor direct-drive electric tractor transmission system with front and rear direct coupling, so as to solve the above-mentioned problem.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A dual-motor direct-drive electric tractor transmission system includes: a travel power motor, a power output motor, a gearbox structure, a rear axle assembly structure, a front drive assembly structure, and a power output structure; the travel power motor and the power output motor are arranged side by side on the tractor, the travel power motor is connected to the gearbox structure, the front and rear ends of the gearbox structure are respectively connected to the front drive assembly structure and the rear axle assembly structure, transmitting the power output by the travel power motor to the front drive assembly structure and the rear axle assembly structure, and the power output motor is connected to the power output structure, transmitting the power output by the power output motor to the power output structure.

[0005] The beneficial effects of this utility model are as follows: the front and rear arrangement of the walking power motor and the power output motor ensures that the tractor's movement and the supporting power equipment are independent and do not interfere with each other, thereby improving the driving force of the tractor's movement and operation. It is applicable to both large and small tractors and has strong versatility. Especially for small tractors with limited lateral space, this utility model simplifies the design to make the transmission system structure more compact and the transmission efficiency higher. The power source is changed from an engine to an electric motor, which reduces production and operating costs, saves energy and reduces emissions. It solves the problems of complex structure, high cost, high fuel consumption and exhaust pollution of existing tractor transmission systems, and provides a more environmentally friendly and efficient solution for modern agriculture.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the gearbox structure includes: a first gearbox gear, a second gearbox gear, a third gearbox gear, a fourth gearbox gear, a fifth gearbox gear, a first drive shaft, a second drive shaft, and a third drive shaft; the two ends of the second gearbox mesh with the first gearbox gear and the fifth gearbox gear respectively, the third gearbox gear meshes with the fourth gearbox gear, the first gearbox gear is sleeved on one end of the first drive shaft, the other end of the first drive shaft is connected to the output shaft of the drive motor, the second gearbox gear and the third gearbox gear are respectively sleeved on both ends of the second drive shaft, and the fourth gearbox gear and the fifth gearbox gear are respectively sleeved on both ends of the third drive shaft.

[0008] The beneficial effect of adopting the above-mentioned further scheme is that it facilitates the transmission of power output from the walking motor through the meshing of gears and the sleeve of the transmission rod and gears.

[0009] Furthermore, the gear ratio of the second gear and the fifth gear of the transmission is greater than the gear ratio of the third gear and the fourth gear of the transmission.

[0010] The beneficial effect of adopting the above-mentioned further scheme is that it facilitates the transmission of power from the second gear to the fifth gear and from the third gear to the fourth gear, so that the rotational speed of the fifth gear is greater than that of the fourth gear, thereby realizing the variation of output power.

[0011] Furthermore, the gearbox structure also includes a gearbox engagement sleeve, which is disposed between the fourth gear and the fifth gear of the gearbox. The gearbox engagement sleeve is slidably sleeved on the third drive shaft of the gearbox, and the gearbox engagement sleeve is movably engaged with the fourth gear or the fifth gear of the gearbox.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the movable engagement of the gearbox engagement sleeve with the fourth gear or the fifth gear of the gearbox facilitates the transmission of power from the fourth gear or the fifth gear of the gearbox to the third drive shaft of the gearbox, thereby realizing the adjustment of the high and low gears of the gearbox.

[0013] Furthermore, the rear axle assembly structure includes: a first rear axle gear, a second rear axle gear, a third rear axle gear, a large rear axle bevel gear, a fifth rear axle gear, a sixth rear axle gear, a rear axle differential, an eighth rear axle gear, a ninth rear axle gear, a first rear axle drive shaft, a second rear axle drive shaft, a small rear axle bevel gear shaft, a fourth rear axle drive shaft, a fifth rear axle drive shaft, a sixth rear axle drive shaft, and a seventh rear axle drive shaft; both ends of the second rear axle gear mesh with the first and third rear axle gears respectively; the first rear axle gear is mounted on the first rear axle drive shaft; the second rear axle gear is mounted on the second rear axle drive shaft; the large rear axle bevel gear is mounted on the rear axle differential; and the gear end of the small rear axle bevel gear shaft meshes with the large rear axle bevel gear shaft. The rear axle is engaged with the following gears: the third rear axle gear is mounted on the end of the small bevel gear shaft furthest from the gear; the large bevel gear and the fifth rear axle gear are mounted on both ends of the fourth rear axle drive shaft; the fifth rear axle gear meshes with the sixth rear axle gear; the sixth rear axle gear is mounted on one end of the fifth rear axle drive shaft; the other end of the fifth rear axle drive shaft is connected to one rear wheel of the tractor; the rear axle differential is connected to one end of the sixth rear axle drive shaft; the eighth rear axle gear is mounted on the other end of the sixth rear axle drive shaft; the eighth rear axle gear meshes with the ninth rear axle gear; the ninth rear axle gear is mounted on one end of the seventh rear axle drive shaft; the other end of the seventh rear axle drive shaft is connected to the other rear wheel of the tractor.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the rear axle differential, through the cooperation of gears and drive shafts, can receive the power transmitted from the transmission and then transmit the power to the two rear wheels through the cooperation of gears and drive shafts, thereby realizing the drive of the rear wheels.

[0015] Furthermore, the rear axle assembly structure also includes a connecting shaft, the two ends of which are respectively connected to the third drive shaft of the gearbox and the first drive shaft of the rear axle.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the connecting shaft facilitates the power output of the gearbox to the rear axle assembly structure.

[0017] Furthermore, the front-wheel drive assembly structure includes: a front-wheel drive first gear, a front-wheel drive second gear, a front-wheel drive third gear, a front-wheel drive fourth gear, a front-wheel drive fifth gear, a front-wheel drive sixth gear, a front-wheel drive differential, a front-wheel drive eighth gear, a front-wheel drive ninth gear, a front-wheel drive tenth gear, a front-wheel drive eleventh gear, a front-wheel drive second drive shaft, a front-wheel drive third drive shaft, a front-wheel drive fourth drive shaft, a front-wheel drive fifth drive shaft, a front-wheel drive sixth drive shaft, a front-wheel drive seventh drive shaft, and a front-wheel drive eighth drive shaft; the front-wheel drive first gear is sleeved on one end of the front-wheel drive second drive shaft, the front-wheel drive first gear meshes with the front-wheel drive second gear, the front-wheel drive second gear is mounted on the front-wheel drive differential, the front-wheel drive second gear and the front-wheel drive third gear are respectively sleeved on both ends of the front-wheel drive third drive shaft, the front-wheel drive third gear meshes with the front-wheel drive fourth gear, and the front-wheel drive fourth gear... The gear and the fifth front-drive gear are respectively mounted on both ends of the fourth front-drive shaft. The fifth front-drive gear meshes with the sixth front-drive gear. The sixth front-drive gear is mounted on one end of the fifth front-drive shaft. The other end of the fifth front-drive shaft is connected to one front wheel of the tractor. One end of the sixth front-drive shaft is connected to the front-drive differential. The eighth front-drive gear is mounted on the other end of the sixth front-drive shaft. The eighth front-drive gear meshes with the ninth front-drive gear. The ninth and tenth front-drive gears are respectively mounted on both ends of the seventh front-drive shaft. The tenth front-drive gear meshes with the eleventh front-drive gear. The eleventh front-drive gear is mounted on one end of the eighth front-drive shaft. The other end of the eighth front-drive shaft is connected to the other front wheel of the tractor.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the front drive differential, through the cooperation of gears and drive shafts, can receive the power transmitted from the transmission and then transmit the power to the two front wheels through the cooperation of gears and drive shafts, thereby realizing the drive of the front wheels.

[0019] Furthermore, the front-drive assembly structure also includes: a front-drive first drive shaft, a front-drive engagement sleeve, and a gear seat; the front-drive engagement sleeve is sleeved on the front-drive first drive shaft, the gear seat is sleeved on the end of the front-drive second drive shaft away from the front-drive first gear, the front-drive engagement sleeve and the gear seat are movably engaged, and the front-drive first drive shaft is connected to the gearbox third drive shaft.

[0020] The beneficial effects of adopting the above-mentioned further scheme are: the connection between the front drive first drive shaft and the gearbox third drive shaft is conducive to transmitting the power of the gearbox to the front drive assembly structure; the front drive engagement sleeve and the gear seat are movably engaged, which is conducive to transmitting the power of the gearbox to the front drive assembly structure when the front drive engagement sleeve moves to engage with the gear seat, and disconnecting the power input to the front drive assembly structure when the front drive engagement sleeve moves to disengage from the gear seat.

[0021] Furthermore, the power output structure includes: a first power output gear, a second power output gear, a third power output gear, a fourth power output gear, a fifth power output gear, a sixth power output gear, a seventh power output gear, an eighth power output gear, a ninth power output gear, a tenth power output gear, a first power output drive shaft, a second power output drive shaft, a third power output drive shaft, a fourth power output drive shaft, a fifth power output drive shaft, a sixth power output drive shaft, a seventh power output drive shaft, an eighth power output drive shaft, and a ninth power output drive shaft; the two ends of the second power output gear mesh with the first power output gear and the third power output gear, respectively; the second power output gear is sleeved on the second power output drive shaft; the third power output gear is sleeved on one end of the third power output drive shaft; and the first power output gear is sleeved on the first power output drive shaft. The fourth, fifth, sixth, and seventh power output gears mesh sequentially. The fourth power output gear is mounted on one end of the fourth power output drive shaft. The fifth power output gear is mounted on one end of the fifth power output drive shaft via a bearing. The sixth power output gear is mounted on the sixth power output drive shaft. The seventh power output gear is mounted on the seventh power output drive shaft via a bearing. The eighth power output gear is mounted on the other end of the fifth power output drive shaft. The two ends of the ninth power output gear mesh with the eighth and tenth power output gears, respectively. The ninth power output gear is mounted on the eighth and tenth power output drive shafts. Both the seventh and ninth power output drive shafts are connected to external power equipment.

[0022] The beneficial effect of adopting the above-mentioned further solution is that it facilitates the transmission of the power generated by the power output motor to the external power equipment through the cooperation between gears and drive shafts, thereby providing power to the external equipment matched with the tractor and separating it from the power of the tractor's displacement drive.

[0023] Furthermore, the power output structure also includes: a replenishing pump, a clutch, a first power output engagement sleeve, and a second power output engagement sleeve; the third power output drive shaft is connected to the replenishing pump, the two ends of the clutch are respectively connected to the first power output drive shaft and the fourth power output drive shaft, the first power output engagement sleeve is slidably sleeved on the fifth power output drive shaft, the first power output engagement sleeve is movably engaged with the fifth power output gear, and the second power output engagement sleeve is slidably sleeved on the seventh power output drive shaft, the second power output engagement sleeve is movably engaged with the seventh power output gear.

[0024] The beneficial effects of adopting the above-mentioned further scheme are: it facilitates the power output motor to provide power for the oil pump; the clutch facilitates the switching of power output to external power equipment by adjusting the connection and disconnection with the first and fourth power output drive shafts; the first power output engagement sleeve, by engaging and disengaging with the fifth power output gear, facilitates the switching of power output to one of the external power equipment; and the second power output engagement sleeve, by engaging and disengaging with the seventh power output gear, facilitates the switching of power output to another of the external power equipment. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0026] Figure 2 A schematic diagram of the gearbox structure provided for an embodiment of this utility model;

[0027] Figure 3 A schematic diagram of the rear axle assembly structure provided in an embodiment of this utility model;

[0028] Figure 4 A schematic diagram of the front-drive assembly structure provided in an embodiment of this utility model;

[0029] Figure 5 A schematic diagram of the power output structure provided in an embodiment of this utility model.

[0030] in, Figure 1 The double-headed arrows indicate the installation orientation of each component.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Drive motor; 2. Power output motor; 3. Gearbox structure; 4. Rear axle assembly structure; 5. Front drive assembly structure; 6. Power output structure; 31. Gearbox engagement sleeve; 41. Connecting shaft; 51. Front drive engagement sleeve; 52. Gear seat; 61. Oil pump; 62. Clutch; 63. First power output engagement sleeve; 64. Second power output engagement sleeve; 301. First gearbox gear; 302. Second gearbox gear; 303. Third gearbox gear; 304. Fourth gearbox gear; 305. Fifth gearbox gear; 321. First transmission shaft of the gearbox; 322. Second transmission shaft of the gearbox; 323. Third transmission shaft of the gearbox... Three driveshafts; 401, Rear axle first gear; 402, Rear axle second gear; 403, Rear axle third gear; 404, Rear axle large bevel gear; 405, Rear axle fifth gear; 406, Rear axle sixth gear; 407, Rear axle differential; 408, Rear axle eighth gear; 409, Rear axle ninth gear; 421, Rear axle first driveshaft; 422, Rear axle second driveshaft; 423, Rear axle small bevel gear shaft; 424, Rear axle fourth driveshaft; 425, Rear axle fifth driveshaft; 426, Rear axle sixth driveshaft; 427, Rear axle seventh driveshaft; 501, Front drive first gear; 502, Front drive second gear; 503, Front drive third gear 504. Front-wheel drive fourth gear; 505. Front-wheel drive fifth gear; 506. Front-wheel drive sixth gear; 507. Front-wheel drive differential; 508. Front-wheel drive eighth gear; 509. Front-wheel drive ninth gear; 510. Front-wheel drive tenth gear; 511. Front-wheel drive eleventh gear; 521. Front-wheel drive first driveshaft; 522. Front-wheel drive second driveshaft; 523. Front-wheel drive third driveshaft; 524. Front-wheel drive fourth driveshaft; 525. Front-wheel drive fifth driveshaft; 526. Front-wheel drive sixth driveshaft; 527. Front-wheel drive seventh driveshaft; 528. Front-wheel drive eighth driveshaft; 601. Power output first gear; 602. Power output second gear; 603. Power output... Three gears; 604, power output fourth gear; 605, power output fifth gear; 606, power output sixth gear; 607, power output seventh gear; 608, power output eighth gear; 609, power output ninth gear; 610, power output tenth gear; 621, power output first drive shaft; 622, power output second drive shaft; 623, power output third drive shaft; 624, power output fourth drive shaft; 625, power output fifth drive shaft; 626, power output sixth drive shaft; 627, power output seventh drive shaft; 628, power output eighth drive shaft; 629, power output ninth drive shaft. Detailed Implementation

[0033] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0034] like Figure 1 As shown, a dual-motor direct-drive electric tractor transmission system includes: a travel motor 1, a power output motor 2, a gearbox structure 3, a rear axle assembly structure 4, a front drive assembly structure 5, and a power output structure 6. The travel motor 1 and the power output motor 2 are arranged side-by-side on the tractor. The travel motor 1 is connected to the gearbox structure 3. The front and rear ends of the gearbox structure 3 are respectively connected to the front drive assembly structure 5 and the rear axle assembly structure 4, transmitting the power output by the travel motor 1 to the front drive assembly structure 5 and the rear axle assembly structure 4. The power output motor 2 is connected to the power output structure 6, transmitting the power output by the power output motor 2 to the power output structure 6.

[0035] The beneficial effects of this utility model are as follows: the front and rear arrangement of the walking power motor and the power output motor ensures that the tractor's movement and the supporting power equipment are independent and do not interfere with each other, thereby improving the driving force of the tractor's movement and operation. It is applicable to both large and small tractors and has strong versatility. Especially for small tractors with limited lateral space, this utility model simplifies the design to make the transmission system structure more compact and the transmission efficiency higher. The power source is changed from an engine to an electric motor, which reduces production and operating costs, saves energy and reduces emissions. It solves the problems of complex structure, high cost, high fuel consumption and exhaust pollution of existing tractor transmission systems, and provides a more environmentally friendly and efficient solution for modern agriculture.

[0036] Preferred, such as Figure 2 As shown, the gearbox structure 3 includes: a first gearbox 301, a second gearbox 302, a third gearbox 303, a fourth gearbox 304, a fifth gearbox 305, a first transmission shaft 321, a second transmission shaft 322, and a third transmission shaft 323. The two ends of the second gearbox 302 mesh with the first gearbox 301 and the fifth gearbox 305, respectively. The third gearbox 303 meshes with the fourth gearbox 304. The first gearbox 301 is sleeved on one end of the first transmission shaft 321, and the other end of the first transmission shaft 321 is connected to the output shaft of the drive motor 1. The second gearbox 302 and the third gearbox 303 are respectively sleeved on both ends of the second transmission shaft 322, and the fourth gearbox 304 and the fifth gearbox 305 are respectively sleeved on both ends of the third transmission shaft 323.

[0037] The advantages of adopting the above preferred scheme are: it facilitates the transmission of power output from the walking motor through the meshing of gears and the sleeve of the transmission rod and gears.

[0038] Preferred, such as Figure 2 As shown, the gear ratio of the second gear 302 and the fifth gear 305 of the transmission is greater than the gear ratio of the third gear 303 and the fourth gear 304 of the transmission.

[0039] The advantages of adopting the above-mentioned preferred scheme are: it facilitates the transmission of power from the second gear to the fifth gear and from the third gear to the fourth gear, so that the rotational speed of the fifth gear is greater than that of the fourth gear, thereby achieving the variation of output power.

[0040] Preferred, such as Figure 2 As shown, the gearbox structure 3 also includes a gearbox engagement sleeve 31, which is disposed between the fourth gear 304 and the fifth gear 305 of the gearbox. The gearbox engagement sleeve 31 is slidably sleeved on the third transmission shaft 323 of the gearbox, and the gearbox engagement sleeve 31 is movably engaged with the fourth gear 304 or the fifth gear 305 of the gearbox.

[0041] The advantages of adopting the above preferred solution are: the movable engagement of the gearbox engagement sleeve with the fourth gear or the fifth gear of the gearbox facilitates the transmission of power from the fourth gear or the fifth gear of the gearbox to the third drive shaft of the gearbox, thereby realizing the adjustment of the high and low gears of the gearbox.

[0042] Preferred, such as Figure 3As shown, the rear axle assembly structure 4 includes: a rear axle first gear 401, a rear axle second gear 402, a rear axle third gear 403, a rear axle large bevel gear 404, a rear axle fifth gear 405, a rear axle sixth gear 406, a rear axle differential 407, a rear axle eighth gear 408, a rear axle ninth gear 409, a rear axle first driveshaft 421, a rear axle second driveshaft 422, a rear axle small bevel gear shaft 423, a rear axle fourth driveshaft 424, a rear axle fifth driveshaft 425, and so on. The rear axle has a sixth driveshaft 426 and a seventh driveshaft 427. The two ends of the second rear axle gear 402 mesh with the first rear axle gear 401 and the third rear axle gear 403, respectively. The first rear axle gear 401 is mounted on the first rear axle driveshaft 421, and the second rear axle gear 402 is mounted on the second rear axle driveshaft 422. The large rear axle bevel gear 404 is mounted on the rear axle differential 407. The small rear axle bevel gear shaft 423... The rear axle large bevel gear 404 is engaged with the rear axle third gear 403, which is sleeved on the rear axle small bevel gear shaft 423 at the end away from the gear. The rear axle large bevel gear 404 and the rear axle fifth gear 405 are respectively sleeved on both ends of the rear axle fourth drive shaft 424. The rear axle fifth gear 405 is engaged with the rear axle sixth gear 406. The rear axle sixth gear 406 is sleeved on one end of the rear axle fifth drive shaft 425. The other end of the rear axle fifth drive shaft 425 is connected to one rear wheel of the tractor. The rear axle differential 407 is connected to one end of the rear axle sixth drive shaft 426. The rear axle eighth gear 408 is sleeved on the other end of the rear axle sixth drive shaft 426. The rear axle eighth gear 408 is engaged with the rear axle ninth gear 409. The rear axle ninth gear 409 is sleeved on one end of the rear axle seventh drive shaft 427. The other end of the rear axle seventh drive shaft 427 is connected to the other rear wheel of the tractor.

[0043] The advantages of adopting the above preferred solution are: the rear axle differential, through the cooperation of gears and drive shafts, is conducive to receiving power from the transmission and then transmitting the power to the two rear wheels through the cooperation of gears and drive shafts, thereby realizing the drive of the rear wheels.

[0044] Preferred, such as Figure 3 As shown, the rear axle assembly structure 4 also includes a connecting shaft 41, the two ends of which are connected to the third drive shaft 323 of the gearbox and the first drive shaft 421 of the rear axle, respectively.

[0045] The advantage of adopting the above-mentioned preferred solution is that the connecting shaft facilitates the power output of the gearbox to the rear axle assembly structure.

[0046] Preferred, such as Figure 4As shown, the front-wheel drive assembly structure 5 includes: a front-wheel drive first gear 501, a front-wheel drive second gear 502, a front-wheel drive third gear 503, a front-wheel drive fourth gear 504, a front-wheel drive fifth gear 505, a front-wheel drive sixth gear 506, a front-wheel drive differential 507, a front-wheel drive eighth gear 508, a front-wheel drive ninth gear 509, a front-wheel drive tenth gear 510, a front-wheel drive eleventh gear 511, a front-wheel drive second driveshaft 522, a front-wheel drive third driveshaft 523, a front-wheel drive fourth driveshaft 524, a front-wheel drive fifth driveshaft 525, and a front-wheel drive sixth driveshaft 526. The system includes a drive shaft 526, a front-drive seventh drive shaft 527, and a front-drive eighth drive shaft 528. A front-drive first gear 501 is sleeved on one end of the front-drive second drive shaft 522, meshing with the front-drive second gear 502. The front-drive second gear 502 is mounted on the front-drive differential 507. The front-drive second gear 502 and the front-drive third gear 503 are respectively sleeved on both ends of the front-drive third drive shaft 523. The front-drive third gear 503 meshes with the front-drive fourth gear 528. 04. Engagement: The front-drive fourth gear 504 and the front-drive fifth gear 505 are respectively sleeved at both ends of the front-drive fourth drive shaft 524. The front-drive fifth gear 505 meshes with the front-drive sixth gear 506. The front-drive sixth gear 506 is sleeved at one end of the front-drive fifth drive shaft 525. The other end of the front-drive fifth drive shaft 525 is connected to one front wheel of the tractor. One end of the front-drive sixth drive shaft 526 is connected to the front-drive differential 507. The front-drive eighth gear 508 is sleeved... At the other end of the sixth drive shaft 526, the eighth gear 508 meshes with the ninth gear 509. The ninth gear 509 and the tenth gear 510 are respectively sleeved at both ends of the seventh drive shaft 527. The tenth gear 510 meshes with the eleventh gear 511. The eleventh gear 511 is sleeved at one end of the eighth drive shaft 528. The other end of the eighth drive shaft 528 is connected to the other front wheel of the tractor.

[0047] The advantages of adopting the above preferred scheme are: the front drive differential, through the cooperation of gears and drive shafts, is conducive to receiving the power transmitted from the transmission, and then transmitting the power to the two front wheels through the cooperation of gears and drive shafts, thereby realizing the drive of the front wheels.

[0048] Preferred, such as Figure 4As shown, the front-drive assembly structure 5 further includes: a front-drive first drive shaft 521, a front-drive engagement sleeve 51, and a gear seat 52; the front-drive engagement sleeve 51 is sleeved on the front-drive first drive shaft 521, the gear seat 52 is sleeved on the end of the front-drive second drive shaft 522 away from the front-drive first gear 501, the front-drive engagement sleeve 51 and the gear seat 52 are movably engaged, and the front-drive first drive shaft 521 is connected to the gearbox third drive shaft 323.

[0049] The advantages of adopting the above preferred scheme are: the connection between the front drive first drive shaft and the gearbox third drive shaft is beneficial to the transmission of power from the gearbox to the front drive assembly structure; the movable engagement of the front drive engagement sleeve and the gear seat is beneficial to the transmission of power from the gearbox to the front drive assembly structure when the front drive engagement sleeve moves to engage with the gear seat, and to the disconnection of power input to the front drive assembly structure when the front drive engagement sleeve moves to disengage from the gear seat.

[0050] Preferred, such as Figure 5As shown, the power output structure 6 includes: a first power output gear 601, a second power output gear 602, a third power output gear 603, a fourth power output gear 604, a fifth power output gear 605, a sixth power output gear 606, a seventh power output gear 607, an eighth power output gear 608, a ninth power output gear 609, a tenth power output gear 610, a first power output drive shaft 621, a second power output drive shaft 622, a third power output drive shaft 623, a fourth power output drive shaft 624, and a fifth power output drive shaft. 625, 626, 627, 628, and 629 are power output sixth drive shafts; the two ends of the power output second gear 602 mesh with the power output first gear 601 and the power output third gear 603 respectively; the power output second gear 602 is sleeved on the power output second drive shaft 622; the power output third gear 603 is sleeved on one end of the power output third drive shaft 623; and the power output first gear 601 is sleeved on the power output first drive shaft 629. On shaft 621, the fourth power output gear 604, the fifth power output gear 605, the sixth power output gear 606, and the seventh power output gear 607 mesh sequentially. The fourth power output gear 604 is sleeved on one end of the fourth power output drive shaft 624, the fifth power output gear 605 is sleeved on one end of the fifth power output drive shaft 625 via a bearing, the sixth power output gear 606 is sleeved on the sixth power output drive shaft 626, and the seventh power output gear 607 is sleeved on the sixth power output drive shaft 621 via a bearing. On the seventh drive shaft 627, the eighth power output gear 608 is sleeved on the other end of the fifth power output drive shaft 625. The two ends of the ninth power output gear 609 mesh with the eighth power output gear 608 and the tenth power output gear 610, respectively. The ninth power output gear 609 is sleeved on the eighth power output drive shaft 628, and the tenth power output gear 610 is sleeved on the ninth power output drive shaft 629. Both the seventh power output drive shaft 627 and the ninth power output drive shaft 629 are connected to external power equipment.

[0051] It should be noted that, in the technical solution of this utility model, external power equipment refers to external equipment that requires a tractor to provide power for its operation.

[0052] The advantages of adopting the above preferred solution are: it facilitates the transmission of power generated by the power output motor to external power equipment through the cooperation between gears and drive shafts, thereby providing power to the external equipment matched with the tractor and separating it from the power of the tractor's displacement drive.

[0053] Preferred, such as Figure 5 As shown, the power output structure 6 further includes: a replenishing pump 61, a clutch 62, a first power output engagement sleeve 63, and a second power output engagement sleeve 64; the third power output drive shaft 623 is connected to the replenishing pump 61, the two ends of the clutch 62 are respectively connected to the first power output drive shaft 621 and the fourth power output drive shaft 624, the first power output engagement sleeve 63 is slidably sleeved on the fifth power output drive shaft 625, the first power output engagement sleeve 63 is movably engaged with the fifth power output gear 605, the second power output engagement sleeve 64 is slidably sleeved on the seventh power output drive shaft 627, and the second power output engagement sleeve 64 is movably engaged with the seventh power output gear 607.

[0054] The advantages of adopting the above-mentioned preferred scheme are: it facilitates the power output motor to provide power for the oil pump; the clutch facilitates the switching of power output to external power equipment by adjusting the connection and disconnection with the first and fourth power output drive shafts; the first power output engagement sleeve, by engaging and disengaging with the fifth power output gear, facilitates the switching of power output to one of the external power equipment; and the second power output engagement sleeve, by engaging and disengaging with the seventh power output gear, facilitates the switching of power output to the other external power equipment.

[0055] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dual-motor direct-drive electric tractor transmission system with front and rear direct coupling, characterized in that, include: The tractor comprises a walking power motor (1), a power output motor (2), a gearbox structure (3), a rear axle assembly structure (4), a front drive assembly structure (5), and a power output structure (6). The walking power motor (1) and the power output motor (2) are arranged side by side on the tractor. The walking power motor (1) is connected to the gearbox structure (3). The front and rear ends of the gearbox structure (3) are connected to the front drive assembly structure (5) and the rear axle assembly structure (4) respectively, so as to transmit the power output by the walking power motor (1) to the front drive assembly structure (5) and the rear axle assembly structure (4). The power output motor (2) is connected to the power output structure (6), so as to transmit the power output by the power output motor (2) to the power output structure (6).

2. The dual-motor direct-drive electric tractor transmission system according to claim 1, characterized in that, The gearbox structure (3) includes: a first gearbox (301), a second gearbox (302), a third gearbox (303), a fourth gearbox (304), a fifth gearbox (305), a first drive shaft (321), a second drive shaft (322), and a third drive shaft (323); The two ends of the second gear (302) of the gearbox are respectively meshed with the first gear (301) and the fifth gear (305) of the gearbox, and the third gear (303) of the gearbox is meshed with the fourth gear (304) of the gearbox. The first gear (301) of the gearbox is sleeved on one end of the first drive shaft (321) of the gearbox, and the other end of the first drive shaft (321) of the gearbox is connected to the output shaft of the walking power motor (1). The second gear (302) and the third gear (303) of the gearbox are respectively sleeved on both ends of the second drive shaft (322) of the gearbox, and the fourth gear (304) and the fifth gear (305) of the gearbox are respectively sleeved on both ends of the third drive shaft (323) of the gearbox.

3. The dual-motor direct-drive electric tractor transmission system according to claim 2, characterized in that, The gear ratio of the second gear (302) and the fifth gear (305) of the transmission is greater than the gear ratio of the third gear (303) and the fourth gear (304) of the transmission.

4. The dual-motor direct-drive electric tractor transmission system according to claim 2, characterized in that, The gearbox structure (3) further includes a gearbox engagement sleeve (31), which is disposed between the fourth gear (304) and the fifth gear (305) of the gearbox. The gearbox engagement sleeve (31) is slidably sleeved on the third transmission shaft (323) of the gearbox, and the gearbox engagement sleeve (31) is movably engaged with the fourth gear (304) or the fifth gear (305) of the gearbox.

5. The dual-motor direct-drive electric tractor transmission system according to claim 2, characterized in that, The rear axle assembly structure (4) includes: a rear axle first gear (401), a rear axle second gear (402), a rear axle third gear (403), a rear axle large bevel gear (404), a rear axle fifth gear (405), a rear axle sixth gear (406), a rear axle differential (407), a rear axle eighth gear (408), a rear axle ninth gear (409), a rear axle first drive shaft (421), a rear axle second drive shaft (422), a rear axle small bevel gear shaft (423), a rear axle fourth drive shaft (424), a rear axle fifth drive shaft (425), a rear axle sixth drive shaft (426), and a rear axle seventh drive shaft (427); The two ends of the second rear axle gear (402) mesh with the first rear axle gear (401) and the third rear axle gear (403) respectively. The first rear axle gear (401) is mounted on the first rear axle drive shaft (421), and the second rear axle gear (402) is mounted on the second rear axle drive shaft (422). The large rear axle bevel gear (404) is mounted on the rear axle differential (407). The gear end of the small rear axle bevel gear shaft (423) meshes with the large rear axle bevel gear (404). The third rear axle gear (403) is mounted on the end of the small rear axle bevel gear shaft (423) away from the gear. The large rear axle bevel gear (404) and the fifth rear axle gear (405) are respectively mounted on the fourth rear axle drive shaft (407). At both ends of 24), the fifth gear (405) of the rear axle meshes with the sixth gear (406) of the rear axle, the sixth gear (406) of the rear axle is sleeved on one end of the fifth drive shaft (425) of the rear axle, the other end of the fifth drive shaft (425) of the rear axle is connected to one rear wheel of the tractor, the rear axle differential (407) is connected to one end of the sixth drive shaft (426) of the rear axle, the eighth gear (408) of the rear axle is sleeved on the other end of the sixth drive shaft (426) of the rear axle, the eighth gear (408) of the rear axle meshes with the ninth gear (409) of the rear axle, the ninth gear (409) of the rear axle is sleeved on one end of the seventh drive shaft (427) of the rear axle, the other end of the seventh drive shaft (427) of the rear axle is connected to the other rear wheel of the tractor.

6. The dual-motor direct-drive electric tractor transmission system according to claim 5, characterized in that, The rear axle assembly structure (4) also includes a connecting shaft (41), the two ends of which are connected to the third drive shaft (323) of the gearbox and the first drive shaft (421) of the rear axle, respectively.

7. The dual-motor direct-drive electric tractor transmission system according to claim 2, characterized in that, The front-drive assembly structure (5) includes: a front-drive first gear (501), a front-drive second gear (502), a front-drive third gear (503), a front-drive fourth gear (504), a front-drive fifth gear (505), a front-drive sixth gear (506), a front-drive differential (507), a front-drive eighth gear (508), a front-drive ninth gear (509), a front-drive tenth gear (510), a front-drive eleventh gear (511), a front-drive second driveshaft (522), a front-drive third driveshaft (523), a front-drive fourth driveshaft (524), a front-drive fifth driveshaft (525), a front-drive sixth driveshaft (526), ​​a front-drive seventh driveshaft (527), and a front-drive eighth driveshaft (528); The first front-drive gear (501) is sleeved on one end of the second front-drive transmission shaft (522). The first front-drive gear (501) meshes with the second front-drive gear (502). The second front-drive gear (502) is mounted on the front-drive differential (507). The second front-drive gear (502) and the third front-drive gear (503) are respectively sleeved on both ends of the third front-drive transmission shaft (523). The third front-drive gear (503) meshes with the fourth front-drive gear (504). The fourth front-drive gear (504) and the fifth front-drive gear (505) are respectively sleeved on both ends of the fourth front-drive transmission shaft (524). The fifth front-drive gear (505) meshes with the sixth front-drive gear (506). The sixth front-drive gear (506) is sleeved on the fifth front-drive transmission shaft (522). One end of the front drive fifth drive shaft (525) is connected to one front wheel of the tractor, one end of the front drive sixth drive shaft (526) is connected to the front drive differential (507), the front drive eighth gear (508) is sleeved on the other end of the front drive sixth drive shaft (526), ​​the front drive eighth gear (508) meshes with the front drive ninth gear (509), the front drive ninth gear (509) and the front drive tenth gear (510) are respectively sleeved on both ends of the front drive seventh drive shaft (527), the front drive tenth gear (510) meshes with the front drive eleventh gear (511), the front drive eleventh gear (511) is sleeved on one end of the front drive eighth drive shaft (528), and the other end of the front drive eighth drive shaft (528) is connected to the other front wheel of the tractor.

8. The dual-motor direct-drive electric tractor transmission system according to claim 7, characterized in that, The front-drive assembly structure (5) further includes: a front-drive first drive shaft (521), a front-drive engagement sleeve (51), and a gear seat (52); the front-drive engagement sleeve (51) is sleeved on the front-drive first drive shaft (521), the gear seat (52) is sleeved on the end of the front-drive second drive shaft (522) away from the front-drive first gear (501), the front-drive engagement sleeve (51) and the gear seat (52) are movably engaged, and the front-drive first drive shaft (521) is connected to the gearbox third drive shaft (323).

9. The dual-motor direct-drive electric tractor transmission system according to claim 1, characterized in that, The power output structure (6) includes: a first power output gear (601), a second power output gear (602), a third power output gear (603), a fourth power output gear (604), a fifth power output gear (605), a sixth power output gear (606), a seventh power output gear (607), an eighth power output gear (608), a ninth power output gear (609), a tenth power output gear (610), a first power output drive shaft (621), a second power output drive shaft (622), a third power output drive shaft (623), a fourth power output drive shaft (624), a fifth power output drive shaft (625), a sixth power output drive shaft (626), a seventh power output drive shaft (627), an eighth power output drive shaft (628), and a ninth power output drive shaft (629); The two ends of the second power output gear (602) mesh with the first power output gear (601) and the third power output gear (603) respectively. The second power output gear (602) is sleeved on the second power output drive shaft (622), and the third power output gear (603) is sleeved on one end of the third power output drive shaft (623). The first power output gear (601) is sleeved on the first power output drive shaft (621). The fourth power output gear (604), the fifth power output gear (605), the sixth power output gear (606), and the seventh power output gear (607) mesh sequentially. The fourth power output gear (604) is sleeved on one end of the fourth power output drive shaft (624), and the fifth power output gear (605) is sleeved on the power output drive shaft (607) via a bearing. At one end of the fifth drive shaft (625), the sixth power output gear (606) is sleeved on the sixth power output drive shaft (626), the seventh power output gear (607) is sleeved on the seventh power output drive shaft (627) via a bearing, the eighth power output gear (608) is sleeved on the other end of the fifth power output drive shaft (625), the two ends of the ninth power output gear (609) mesh with the eighth power output gear (608) and the tenth power output gear (610) respectively, the ninth power output gear (609) is sleeved on the eighth power output drive shaft (628), the tenth power output gear (610) is sleeved on the ninth power output drive shaft (629), and both the seventh power output drive shaft (627) and the ninth power output drive shaft (629) are connected to external power equipment.

10. The dual-motor direct-drive electric tractor transmission system according to claim 9, characterized in that, The power output structure (6) further includes: a replenishing pump (61), a clutch (62), a first power output engagement sleeve (63), and a second power output engagement sleeve (64); the third power output transmission shaft (623) is connected to the replenishing pump (61), the two ends of the clutch (62) are respectively connected to the first power output transmission shaft (621) and the fourth power output transmission shaft (624), the first power output engagement sleeve (63) is slidably sleeved on the fifth power output transmission shaft (625), the first power output engagement sleeve (63) is movably engaged with the fifth power output gear (605), the second power output engagement sleeve (64) is slidably sleeved on the seventh power output transmission shaft (627), and the second power output engagement sleeve (64) is movably engaged with the seventh power output gear (607).

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