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

Abstract

The invention 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 walking and working driving force of the tractor is improved, and the tractor is suitable for both large and small types and high in universality.

Description

Technical Field

[0001] The invention relates to the field of tractor transmission, and in particular to a direct-connected electric tractor transmission system with dual motors arranged front and rear. Background Art

[0002] At present, most tractors are driven by engines, which have problems such as complex structure, high cost, high fuel consumption and exhaust pollution. In comparison, the direct-connected electric transmission system has a simple design, high efficiency, compact structure, and can save materials. In addition, most of the existing electric tractors are modified on the basis of the original engine, using a single motor to replace the engine to drive the tractor and external power equipment, that is, most of them are single-motor oil-to-electric design, with a single power source and insufficient power; and for small tractors, the lateral space is small. If the design of arranging the walking and power output motors side by side is adopted, there is insufficient space, and it cannot be arranged flexibly, and the versatility is low. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a direct-connected electric tractor transmission system with dual motors arranged front and rear to solve the above problems.

[0004] The technical solution of the present invention for solving the above technical problems is as follows: a dual-motor front-to-back arranged direct-connected electric tractor transmission system, comprising: 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 front and back, 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, the power output motor is connected to the power output structure, and the power output motor is transmitted to the power output structure.

[0005] The beneficial effects of the present invention are as follows: the travel power motor and the power output motor are arranged front and back, so that the travel of the tractor and the supporting power equipment are independent of each other and do not interfere with each other, thereby improving the driving force for the travel and work of the tractor, and the present invention is applicable to both large and small models and has strong versatility; especially for small-type tractors with small lateral space, the present invention makes the transmission system structure more compact and the transmission efficiency high through simplified design, and the power source is converted from the engine to the motor, which reduces the production and use costs, saves energy and reduces emissions, solves the problems of complex structure, high cost, high fuel consumption and exhaust gas pollution of the existing tractor transmission system, and provides a more environmentally friendly and efficient solution for modern agriculture.

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

[0007] Further, the gearbox structure includes: a first gear of the gearbox, a second gear of the gearbox, a third gear of the gearbox, a fourth gear of the gearbox, a fifth gear of the gearbox, a first transmission shaft of the gearbox, a second transmission shaft of the gearbox and a third transmission shaft of the gearbox; the two ends of the second gear of the gearbox are respectively meshed with the first gear of the gearbox and the fifth gear of the gearbox, the third gear of the gearbox is meshed with the fourth gear of the gearbox, the first gear of the gearbox is sleeved on one end of the first transmission shaft of the gearbox, and the other end of the first transmission shaft of the gearbox is connected to the output shaft of the walking power motor, the second gear of the gearbox and the third gear of the gearbox are respectively sleeved on the two ends of the second transmission shaft of the gearbox, and the fourth gear of the gearbox and the fifth gear of the gearbox are respectively sleeved on the two ends of the third transmission shaft of the gearbox.

[0008] The beneficial effect of adopting the above further solution is that it is conducive to transmitting the power output by the walking power motor through the meshing between the gears and the sleeve arrangement of the transmission rod and the gears.

[0009] Further, a gear ratio between the second gear of the gearbox and the fifth gear of the gearbox is greater than a gear ratio between the third gear of the gearbox and the fourth gear of the gearbox.

[0010] The beneficial effect of adopting the above further scheme is: it is conducive to transmitting power to the fifth gear of the gearbox through the second gear of the gearbox, and when transmitting power to the fourth gear of the gearbox through the third gear of the gearbox, the rotation speed of the fifth gear of the gearbox is greater than that of the fourth gear of the gearbox, thereby realizing the high and low changes of the output power.

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

[0012] The beneficial effect of adopting the above further scheme is that the gearbox engagement sleeve can be movably engaged with the fourth gear of the gearbox or the fifth gear of the gearbox, which is beneficial to transmitting the power of the fourth gear of the gearbox or the fifth gear of the gearbox to the third transmission shaft of the gearbox, thereby realizing the adjustment of the high and low gear positions of the gearbox.

[0013] Further, the rear axle assembly structure includes: a first gear of the rear axle, a second gear of the rear axle, a third gear of the rear axle, a large bevel gear of the rear axle, a fifth gear of the rear axle, a sixth gear of the rear axle, a rear axle differential, an eighth gear of the rear axle, a ninth gear of the rear axle, a first transmission shaft of the rear axle, a second transmission shaft of the rear axle, a small bevel gear shaft of the rear axle, a fourth transmission shaft of the rear axle, a fifth transmission shaft of the rear axle, a sixth transmission shaft of the rear axle and a seventh transmission shaft of the rear axle; the two ends of the second gear of the rear axle are respectively meshed with the first gear of the rear axle and the third gear of the rear axle, the first gear of the rear axle is sleeved on the first transmission shaft of the rear axle, the second gear of the rear axle is sleeved on the second transmission shaft of the rear axle, the large bevel gear of the rear axle is installed on the rear axle differential, and the gear end of the small bevel gear shaft of the rear axle is meshed with the large bevel gear of the rear axle The gears are meshed, the third gear of the rear axle is sleeved on the end of the small bevel gear shaft of the rear axle away from the gear, the large bevel gear of the rear axle and the fifth gear of the rear axle are respectively sleeved on the two ends of the fourth transmission shaft of the rear axle, the fifth gear of the rear axle is meshed with the sixth gear of the rear axle, the sixth gear of the rear axle is sleeved on one end of the fifth transmission shaft of the rear axle, the other end of the fifth transmission shaft of the rear axle is connected to a rear wheel of the tractor, the rear axle differential is connected to one end of the sixth transmission shaft of the rear axle, the eighth gear of the rear axle is sleeved on the other end of the sixth transmission shaft of the rear axle, the eighth gear of the rear axle is meshed with the ninth gear of the rear axle, the ninth gear of the rear axle is sleeved on one end of the seventh transmission shaft of the rear axle, and the other end of the seventh transmission shaft of the rear axle is connected to another rear wheel of the tractor.

[0014] The beneficial effect of adopting the above further solution is that the rear axle differential is conducive to receiving the power transmitted from the transmission through the cooperation of gears and drive shafts, and then transmitting the power to the rear wheels on both sides through the cooperation of gears and drive shafts, thereby realizing the driving of the rear wheels.

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

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

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

[0018] The beneficial effect of adopting the above further scheme is that the front-drive differential is conducive to receiving the power transmitted from the transmission through the cooperation of gears and drive shafts, and then transmitting the power to the front wheels on both sides through the cooperation of gears and drive shafts, thereby realizing the driving of the front wheels.

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

[0020] The beneficial effect of adopting the above further scheme is: the front-wheel drive first transmission shaft is connected to the third transmission shaft of the gearbox, which is beneficial to transmitting the power of the gearbox to the front-wheel drive assembly structure; the front-wheel drive engagement sleeve is movably engaged with the gear seat, which is beneficial to transmitting the power of the gearbox to the front-wheel drive assembly structure when the front-wheel drive engagement sleeve moves to engage with the gear seat; when the front-wheel drive engagement sleeve moves to cancel the engagement with the gear seat, the power input to the front-wheel drive assembly structure is disconnected.

[0021] Further, 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 transmission shaft, a second power output transmission shaft, a third power output transmission shaft, a fourth power output transmission shaft, a fifth power output transmission shaft, a sixth power output transmission shaft, a seventh power output transmission shaft, an eighth power output transmission shaft and a ninth power output transmission shaft; the two ends of the second power output gear are respectively meshed with the first power output gear and the third power output gear, the second power output gear is sleeved on the second power output transmission shaft, the third power output gear is sleeved on one end of the third power output transmission shaft, the first power output gear is sleeved on the first power output transmission shaft, and the The fourth power output gear, the fifth power output gear, the sixth power output gear and the seventh power output gear are meshed in sequence, the fourth power output gear is sleeved on one end of the fourth power output transmission shaft, the fifth power output gear is sleeved on one end of the fifth power output transmission shaft through a bearing, the sixth power output gear is sleeved on the sixth power output transmission shaft, the seventh power output gear is sleeved on the seventh power output transmission shaft through a bearing, the eighth power output gear is sleeved on the other end of the fifth power output transmission shaft, the two ends of the ninth power output gear are respectively meshed with the eighth power output gear and the tenth power output gear, the ninth power output gear is sleeved on the eighth power output transmission shaft, the tenth power output gear is sleeved on the ninth power output transmission shaft, and the seventh power output transmission shaft and the ninth power output transmission shaft are both connected to external power equipment.

[0022] The beneficial effect of adopting the above further scheme is that it is conducive to transmitting the power generated by the power output motor to the external power equipment through the cooperation between the gears and the transmission shaft, thereby providing power to the external equipment matching the tractor and separating it from the power of the tractor displacement drive.

[0023] Furthermore, the power output structure also includes: an oil replenishment pump, a clutch, a first power output meshing sleeve and a second power output meshing sleeve; the third power output transmission shaft is connected to the oil replenishment pump, and the two ends of the clutch are respectively connected to the first power output transmission shaft and the fourth power output transmission shaft, the first power output meshing sleeve is slidingly sleeved on the fifth power output transmission shaft, and the first power output meshing sleeve is movably meshed with the fifth power output gear, and the second power output meshing sleeve is slidingly sleeved on the seventh power output transmission shaft, and the second power output meshing sleeve is movably meshed with the seventh power output gear.

[0024] The beneficial effects of adopting the above further scheme are: it is conducive to enabling the power output motor to provide power for the oil replenishment pump, and the clutch is conducive to realizing the on-off control of the power output of the external power device by adjusting the connection and disconnection with the power output first transmission shaft and the power output fourth transmission shaft; the power output first engagement sleeve is conducive to the on-off control of the power output of one of the external power devices by engaging and disengaging with the power output fifth gear; the power output second engagement sleeve is conducive to the on-off control of the power output of another external power device by engaging and disengaging with the power output seventh gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of a gearbox structure provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of a rear axle assembly structure provided by an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of a front drive assembly structure provided by an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of a power output structure provided in an embodiment of the present invention.

[0030] in, Figure 1 The double-headed arrows in the figure indicate the installation positions of the components.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

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

[0033] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] like Figure 1 As shown in the figure, a direct-connected transmission system for a double-motor front-and-rear arranged electric tractor includes: a traveling power motor 1, a power take-off motor 2, a gearbox structure 3, a rear axle assembly structure 4, a front drive assembly structure 5, and a power take-off structure 6; the traveling power motor 1 and the power take-off motor 2 are arranged side by side front and rear on the tractor, the traveling power 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, and the power output by the traveling power motor 1 is transmitted to the front drive assembly structure 5 and the rear axle assembly structure 4, and the power take-off motor 2 is connected to the power take-off structure 6, and the power output by the power take-off motor 2 is transmitted to the power take-off structure 6.

[0035] The beneficial effects of the present invention are as follows: The traveling power motor and the power take-off motor are arranged front and rear, so that the traveling of the tractor and the supporting power equipment are independent of each other and do not interfere with each other, improving the driving force for the tractor to travel and work, and being applicable to both large and small models, with strong versatility; especially for small-model tractors with a small lateral space, the present invention simplifies the design to make the transmission system structure more compact, with high transmission efficiency, the power source is converted from an engine to a motor, reducing production and use costs, saving energy and reducing emissions, and solving the problems of the existing tractor transmission system such as complex structure, high cost, large fuel consumption, and exhaust gas polluting the environment, providing a more environmentally friendly and efficient solution for modern agriculture.

[0036] Preferably, as Figure 2 shown, the gearbox structure 3 includes: a first gear 301 of the gearbox, a second gear 302 of the gearbox, a third gear 303 of the gearbox, a fourth gear 304 of the gearbox, a fifth gear 305 of the gearbox, a first transmission shaft 321 of the gearbox, a second transmission shaft 322 of the gearbox, and a third transmission shaft 323 of the gearbox; both 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, 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 transmission shaft 321 of the gearbox, the other end of the first transmission shaft 321 of the gearbox is connected to the output shaft of the traveling power motor 1, the second gear 302 and the third gear 303 of the gearbox are respectively sleeved on both ends of the second transmission 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 transmission shaft 323 of the gearbox.

[0037] The beneficial effect of adopting the above preferred solution is: It is beneficial to transmit the power output by the traveling power motor through the meshing between gears and the sleeving of the transmission rod and the gear.

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

[0039] The beneficial effect of adopting the above-mentioned preferred scheme is that it is conducive to transmitting power to the fifth gear of the gearbox through the second gear of the gearbox, and when transmitting power to the fourth gear of the gearbox through the third gear of the gearbox, the rotation speed of the fifth gear of the gearbox is greater than that of the fourth gear of the gearbox, thereby realizing the high and low changes of the output power.

[0040] Preferably, Figure 2 As shown, the gearbox structure 3 also includes a gearbox engaging sleeve 31, which is arranged between the gearbox fourth gear 304 and the gearbox fifth gear 305, and the gearbox engaging sleeve 31 is slidably sleeved on the gearbox third transmission shaft 323, and the gearbox engaging sleeve 31 is movably engaged with the gearbox fourth gear 304 or the gearbox fifth gear 305.

[0041] The beneficial effect of adopting the above preferred scheme is that the gearbox engagement sleeve can be movably engaged with the fourth gear of the gearbox or the fifth gear of the gearbox, which is beneficial to transmitting the power of the fourth gear of the gearbox or the fifth gear of the gearbox to the third transmission shaft of the gearbox, thereby realizing the adjustment of the high and low gear positions of the gearbox.

[0042] Preferably, Figure 3As shown, the rear axle assembly structure 4 includes: a first rear axle gear 401, a second rear axle gear 402, a third rear axle gear 403, a large bevel gear 404, a fifth rear axle gear 405, a sixth rear axle gear 406, a rear axle differential 407, an eighth rear axle gear 408, a ninth rear axle gear 409, a first rear axle transmission shaft 421, a second rear axle transmission shaft 422, a small bevel gear shaft 423, a fourth rear axle transmission shaft 424, a fifth rear axle transmission shaft 425, a rear The sixth transmission shaft 426 of the rear axle and the seventh transmission shaft 427 of the rear axle; the two ends of the second gear 402 of the rear axle are respectively meshed with the first gear 401 of the rear axle and the third gear 403 of the rear axle, the first gear 401 of the rear axle is sleeved on the first transmission shaft 421 of the rear axle, the second gear 402 of the rear axle is sleeved on the second transmission shaft 422 of the rear axle, the large bevel gear 404 of the rear axle is installed on the rear axle differential 407, and the gear of the small bevel gear shaft 423 of the rear axle is ... The end is meshed with the large bevel gear 404 of the rear axle, the third gear 403 of the rear axle is sleeved on the end of the small bevel gear shaft 423 of the rear axle away from the gear, the large bevel gear 404 of the rear axle and the fifth gear 405 of the rear axle are respectively sleeved on the two ends of the fourth transmission shaft 424 of the rear axle, the fifth gear 405 of the rear axle is meshed 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 transmission shaft 425 of the rear axle, and the other end of the fifth transmission shaft 425 of the rear axle is connected to a rear wheel of the tractor, the rear axle differential 407 is connected to one end of the sixth transmission shaft 426 of the rear axle, the eighth gear 408 of the rear axle is sleeved on the other end of the sixth transmission shaft 426 of the rear axle, the eighth gear 408 of the rear axle is meshed 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 transmission shaft 427 of the rear axle, and the other end of the seventh transmission shaft 427 of the rear axle is connected to another rear wheel of the tractor.

[0043] The beneficial effect of adopting the above preferred solution is that the rear axle differential is conducive to receiving the power transmitted from the transmission through the cooperation of gears and drive shafts, and then transmitting the power to the rear wheels on both sides through the cooperation of gears and drive shafts, thereby realizing the driving of the rear wheels.

[0044] Preferably, Figure 3 As shown, the rear axle assembly structure 4 further includes a connecting shaft 41, and both ends of the connecting shaft 41 are respectively connected to the third transmission shaft 323 of the gearbox and the first transmission shaft 421 of the rear axle.

[0045] The beneficial effect of adopting the above preferred solution is that the connecting shaft is conducive to outputting the power of the gearbox to the rear axle assembly structure.

[0046] Preferably, Figure 4As shown, 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 transmission shaft 522, a front drive third transmission shaft 523, a front drive fourth transmission shaft 524, a front drive fifth transmission shaft 525, a front drive sixth transmission shaft 526, a front drive sixth transmission shaft 527, 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 transmission shaft 522, a front drive third transmission shaft 523, a front drive fourth transmission shaft 524, a front drive fifth transmission shaft 525, a front drive sixth transmission shaft 526 ... The front drive shaft 526, the front drive seventh transmission shaft 527 and the front drive eighth transmission shaft 528; the front drive first gear 501 is sleeved on one end of the front drive second transmission shaft 522, the front drive first gear 501 is meshed with the front drive second gear 502, the front drive second gear 502 is installed 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 transmission shaft 523, the front drive third gear 503 is meshed with the front drive fourth gear 5 04, the front drive fourth gear 504 and the front drive fifth gear 505 are respectively sleeved on both ends of the front drive fourth transmission shaft 524, the front drive fifth gear 505 is meshed with the front drive sixth gear 506, the front drive sixth gear 506 is sleeved on one end of the front drive fifth transmission shaft 525, the other end of the front drive fifth transmission shaft 525 is connected to a front wheel of the tractor, one end of the front drive sixth transmission shaft 526 is connected to the front drive differential 507, the front drive eighth gear 508 is sleeved At the other end of the front drive sixth transmission shaft 526, the front drive eighth gear 508 is meshed with the front drive ninth gear 509, the front drive ninth gear 509 and the front drive tenth gear 510 are respectively sleeved on the two ends of the front drive seventh transmission shaft 527, the front drive tenth gear 510 is meshed with the front drive eleventh gear 511, the front drive eleventh gear 511 is sleeved on one end of the front drive eighth transmission shaft 528, and the other end of the front drive eighth transmission shaft 528 is connected to the other front wheel of the tractor.

[0047] The beneficial effect of adopting the above preferred solution is that the front-drive differential is conducive to receiving the power transmitted from the transmission through the cooperation of gears and drive shafts, and then transmitting the power to the front wheels on both sides through the cooperation of gears and drive shafts, thereby realizing the driving of the front wheels.

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

[0049] The beneficial effects of adopting the above-mentioned preferred scheme are: the front-wheel drive first transmission shaft is connected to the third transmission shaft of the gearbox, which is beneficial to transmitting the power of the gearbox to the front-wheel drive assembly structure; the front-wheel drive engagement sleeve is movably engaged with the gear seat, which is beneficial to transmitting the power of the gearbox to the front-wheel drive assembly structure when the front-wheel drive engagement sleeve moves to engage with the gear seat; when the front-wheel drive engagement sleeve moves to cancel the engagement with the gear seat, the power input to the front-wheel drive assembly structure is disconnected.

[0050] Preferably, 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 transmission shaft 621, a second power output transmission shaft 622, a third power output transmission shaft 623, a fourth power output transmission shaft 624, and a fifth power output transmission shaft 625, a sixth power output transmission shaft 626, a seventh power output transmission shaft 627, an eighth power output transmission shaft 628 and a ninth power output transmission shaft 629; the two ends of the second power output gear 602 are respectively meshed with the first power output gear 601 and the third power output gear 603, the second power output gear 602 is sleeved on the second power output transmission shaft 622, the third power output gear 603 is sleeved on one end of the third power output transmission shaft 623, the first power output gear 601 is sleeved on the first power output transmission shaft 623, 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 are meshed in sequence on the shaft 621. The fourth power output gear 604 is sleeved on one end of the fourth power output transmission shaft 624. The fifth power output gear 605 is sleeved on one end of the fifth power output transmission shaft 625 through a bearing. The sixth power output gear 606 is sleeved on the sixth power output transmission shaft 626. The seventh power output gear 607 is sleeved on the sixth power output transmission shaft 626 through a bearing. On the seventh transmission shaft 627, the eighth power output gear 608 is sleeved on the other end of the fifth power output transmission shaft 625, and the two ends of the ninth power output gear 609 are respectively meshed with the eighth power output gear 608 and the tenth power output gear 610, the ninth power output gear 609 is sleeved on the eighth power output transmission shaft 628, and the tenth power output gear 610 is sleeved on the ninth power output transmission shaft 629. The seventh power output transmission shaft 627 and the ninth power output transmission shaft 629 are both connected to external power equipment.

[0051] It should be noted that in the technical solution of the present invention, the external power equipment refers to the external equipment that needs the tractor to provide power for its operation.

[0052] The beneficial effect of adopting the above preferred scheme is that it is conducive to transmitting the power generated by the power output motor to the external power equipment through the cooperation between the gears and the transmission shaft, thereby providing power to the external equipment matching the tractor and separating it from the power of the tractor displacement drive.

[0053] Preferably, Figure 5 As shown, the power output structure 6 also includes: an oil replenishment pump 61, a clutch 62, a first power output meshing sleeve 63 and a second power output meshing sleeve 64; the third power output transmission shaft 623 is connected to the oil replenishment pump 61, and 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 meshing sleeve 63 is slidably mounted on the fifth power output transmission shaft 625, and the first power output meshing sleeve 63 is movably engaged with the fifth power output gear 605, and the second power output meshing sleeve 64 is slidably mounted on the seventh power output transmission shaft 627, and the second power output meshing sleeve 64 is movably engaged with the seventh power output gear 607.

[0054] The beneficial effects of adopting the above-mentioned preferred scheme are: it is conducive to enabling the power output motor to provide power for the oil replenishment pump, and the clutch is conducive to realizing the on-off control of the power output of the external power device by adjusting the connection and disconnection with the power output first transmission shaft and the power output fourth transmission shaft; the power output first engagement sleeve is conducive to the on-off control of the power output of one of the external power devices by engaging and disengaging with the power output fifth gear; the power output second engagement sleeve is conducive to the on-off control of the power output of another external power device by engaging and disengaging with the power output seventh gear.

[0055] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A dual-motor front-to-back direct-connected electric tractor transmission system, characterized in that: include: 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 respectively connected 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), the power output motor (2) is transmitted to the power output structure (6).

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

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

4. The dual-motor front-to-back direct-connected electric tractor transmission system according to claim 2, characterized in that: The gearbox structure (3) further comprises a gearbox engagement sleeve (31), wherein the gearbox engagement sleeve (31) is arranged between the fourth gearbox (304) and the fifth gearbox (305), and 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 gearbox (304) or the fifth gearbox (305).

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

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

7. The dual-motor front-to-back direct-connected electric tractor transmission system according to claim 2, characterized in that: The front drive assembly structure (5) comprises: 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 transmission shaft (522), a front drive third transmission shaft (523), a front drive fourth transmission shaft (524), a front drive fifth transmission shaft (525), a front drive sixth transmission shaft (526), ​​a front drive seventh transmission shaft (527) and a front drive eighth transmission shaft (528); The front drive first gear (501) is sleeved on one end of the front drive second transmission shaft (522), the front drive first gear (501) is meshed with the front drive second gear (502), the front drive second gear (502) is installed 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 transmission shaft (523), the front drive third gear (503) is meshed with the front drive fourth gear (504), the front drive fourth gear (504) and the front drive fifth gear (505) are respectively sleeved on both ends of the front drive fourth transmission shaft (524), the front drive fifth gear (505) is meshed with the front drive sixth gear (506), the front drive sixth gear (506) is sleeved on the front drive fifth transmission shaft (5 25), the other end of the front drive fifth transmission shaft (525) is connected to a front wheel of the tractor, one end of the front drive sixth transmission 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 transmission shaft (526), ​​the front drive eighth gear (508) is meshed with the front drive ninth gear (509), the front drive ninth gear (509) and the front drive tenth gear (510) are respectively sleeved on the two ends of the front drive seventh transmission shaft (527), the front drive tenth gear (510) is meshed with the front drive eleventh gear (511), the front drive eleventh gear (511) is sleeved on one end of the front drive eighth transmission shaft (528), and the other end of the front drive eighth transmission shaft (528) is connected to another front wheel of the tractor.

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

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

10. The dual-motor front-to-back direct-connected electric tractor transmission system according to claim 9, characterized in that: The power output structure (6) further comprises: an oil replenishment pump (61), a clutch (62), a first power output meshing sleeve (63) and a second power output meshing sleeve (64); the third power output transmission shaft (623) is connected to the oil replenishment 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 meshing sleeve (63) is slidably mounted on the fifth power output transmission shaft (625); the first power output meshing sleeve (63) is movably meshed with the fifth power output gear (605); the second power output meshing sleeve (64) is slidably mounted on the seventh power output transmission shaft (627); the second power output meshing sleeve (64) is movably meshed with the seventh power output gear (607).

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