CN117656799A - Multi-power output driving system, driving structure and vegetable management operation platform - Google Patents

Abstract

The invention belongs to the field of field vegetable management machinery, and particularly relates to a multi-power output driving system, a driving structure and a vegetable management operation platform; the front wheel side and rear coupling single motor driving mode, the double motor coupling mode and the double motor independent driving mode are adopted to provide front, middle and rear three power outputs. The front wheels are driven by distributed wheel edges and are arranged on the inner sides of the driving wheels in a scattered manner, so that a transmission route is shortened, a larger space is provided for front axle arrangement, the axle load utilization rate is improved, and the traction performance of the unit is improved; the rear wheel is driven by double motor power, and has compact structure and small space occupation ratio. The operation efficiency of the driving system is improved through the switching of the driving modes, so that the transmission efficiency is higher, the driving modes are switched in real time according to the field working conditions, the operation links of soil tillage, seedling raising, seeding, field management, harvesting, residual film recovery, agricultural waste pickup and the like in the vegetable production process are completed, the one-machine multiple purposes of the agricultural machine are realized, and the operation efficiency is improved.

Description

Multi-power output driving system, driving structure and vegetable management operation platform

Technical Field

The invention belongs to the field of field vegetable management machinery, and particularly relates to a multi-power output driving system, a driving structure and a vegetable management operation platform.

Background

The vegetable production links are various, the operation demands of all links are different, most of domestic existing vegetable field operation machines are small and medium horsepower walking tractors or four-wheel tractors, the existing vegetable field operation machines depend on manpower or rear single-shaft power output and are connected with corresponding machines in a hanging mode, the functions are single, the universality is poor, and the efficiency of vegetable field operation is low and the operation quality is poor. For complex operation links, when the machine is developed one by one, the machine is time and labor-consuming, various field machines are integrated into one chassis, and the field operation of vegetables is integrated, so that the field operation is convenient, and the efficiency is greatly improved.

The existing field management machinery is driven by a fuel engine, so that the problems of huge size, emission pollution and noise pollution exist, and even the edible safety of fruit and vegetable crops can be threatened, which is contrary to the 'green agriculture' concept advocated by the state. Because the motor has a wider speed regulation range and a higher efficiency interval than the engine, the agricultural vehicle driven by the motor has higher driving efficiency and energy consumption economy, and the electric machine is widely applied in agriculture due to the rapid development of motor control technology and battery technology.

When the field machinery works, different machines are matched, and the functions of the management work platform are enhanced, so that the working conditions are various and complex. The single motor drive configuration cannot meet the requirements of multiple operating conditions, resulting in underutilization of the drive motor efficiency. The wheel side driving configuration distributes each motor on two sides of the driving vehicle, has a simple structure, can effectively improve the traction efficiency of the whole vehicle on a complex road surface through torque distribution, but can not divide and converge power due to the arrangement form, can not improve the energy utilization rate of the system, and has the advantages that the power output is also provided by an independent power source, so that the power output is more complex. The double-motor coupling drive adopts the combination of a main motor and a secondary motor, and can obtain various working modes through the switching of the working states of the motors, so that the energy utilization rate can be improved to a great extent, but the double-motor coupling drive still has a two-drive mode and acts on the rear wheels, the front axle has no driving capability, and the rear axle driving power is limited due to the size limitation and cannot be applied to high-power field machinery, so that the situation of reduced trafficability often occurs in complex environments and when machines are hung.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a driving system with multiple power outputs and a vegetable management working platform,

the driving system of the existing field management machine is improved, a multi-motor driving mode is adopted, a front power output interface, a middle power output interface and a rear power output interface and a hanging or traction type machine tool interface are provided, front power output, middle power output and rear power output are provided, multiple driving modes are switched in real time according to field working conditions, the multifunction of the agricultural machine is achieved, the traction power performance and the energy consumption economy of a tractor are effectively improved, and the vegetable production efficiency and the operation quality are improved.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a multi-power output driving system for vegetable field operation, wherein the driving system comprises a front driving axle system, a control system, a power battery pack 10 and a rear driving axle system;

the front drive axle system comprises a first motor 1, a wheel-side speed reducer 2, a second motor 5, a third motor 8 and a power output transmission case 7; the third motor 8 is in transmission connection with the power output transmission case 7 and the power battery pack 10 at the same time; the first motor 2 and the second motor 5 are respectively and simultaneously connected with the power battery pack 10 in a transmission way, and are respectively connected with a driving wheel rim;

the rear drive axle system comprises a fourth motor 11, a fifth motor 16 and a power coupling gearbox 14; the fourth motor 11 and the fifth motor 16 are respectively and simultaneously connected with the power coupling gearbox 14 and the power battery pack 10 in a transmission way;

the control system comprises a motor controller C16, a motor controller C29, a motor controller C317 and a whole vehicle controller 18, wherein the whole vehicle controller 18 is communicated with the power battery pack, the motor controller C16 and the motor controller C29 in the front drive axle system and the motor controller C317 in the rear drive axle system through CAN buses.

The transmission structure of the multi-power output for vegetable field operation adopts the driving system of the multi-power output for vegetable field operation;

the power output transmission case 7 comprises a first-stage gear set 201, a first sliding gear set 202, a switch K1203, a second shaft 204, a switch K2205, a second sliding gear set 206, a first three-stage gear set 207, a second three-stage gear set 209, a front PTO gear shift gear set 208 and a middle PTO gear shift gear set 210;

an output shaft of the third motor 8 is connected with a driving gear of the primary gear set 201, driven gears of the primary gear set 201 are respectively connected with the second shaft 204, and driving gears of the sliding gear set I202 and the sliding gear set II 206 are connected with the second shaft 204; the driven gear of the first sliding gear set 202 is connected with the driving gear of the first third gear set 207, and the driven gear of the second sliding gear set 206 is connected with the driving gear of the second third gear set 209; the driven gear of the first sliding gear set 202 and the driven gear of the second sliding gear set 206 are coaxially arranged; the driven gear of the third-stage gear set I207 is a front PTO3, and the front PTO3 is connected with the driving gear of the front PTO shift gear 208; the driven gear of the third-stage gear set II 209 is a central PTO19, and the central PTO19 is connected with the driving gear of the central PTO gear shifting gear set 210;

the power coupling gearbox 14 comprises a fourth motor 11, a fifth motor 16, a motor input shaft 301, a switch K3302, a sliding gear set 303, a gear set 304, a planetary gear mechanism 305, a gear set 306, a rear PTO gear shift gear set 307, a half shaft 308, a differential 309, a main reducer 310, a bevel gear set 311, a two-gear reducer 312, a gear ring meshing sleeve 319 and a switch K4317;

the planetary gear mechanism 305 is composed of a planet carrier 313, a sun gear 314 and a gear ring 315;

an output shaft of the fourth motor 11 is connected with a driving gear of the sliding gear set 303, and an output shaft of the fifth motor 16 is connected with a driven gear of the gear set 304 and a sun gear of the planetary gear mechanism 305; the driven gear of the gear set 304 is engaged with the ring gear 315 in the planetary gear mechanism 305 through the ring gear engagement sleeve 319; the driven gear of the gear set 306 is connected with the driving gear of the rear PTO gear shifting gear set 307, and the shaft of the driven gear of the rear PTO gear shifting gear set 307 is the rear PTO 13;

an output shaft of a planet carrier 313 of the planetary gear mechanism 305 is connected with a driving gear set of a two-gear speed reducer 312, and a driven gear set of the two-gear speed reducer 312 is coaxially arranged with a driving gear of the main speed reducer 310; one end of the differential 309 is connected with a driven gear of the main speed reducer 310, and the other end is connected with the half shaft 308;

the meshing and separating states of the first sliding gear set 202 and the second sliding gear set 206 are controlled through the change-over switches K1203, K2205 and K3302; the engagement and disengagement of the driven gear of the gear set 304 with the ring gear 315 is controlled by the change-over switch K4.

A transmission mode control method based on the multi-power output transmission structure for vegetable field operation,

the power coupling gearbox 14 includes four drive modes when only rear output power is required;

mode one: the fourth motor 11 is independently driven, the switch K3302 is opened, the sliding gear set III 303 is meshed, the switch K4317 is closed, the gear ring meshing sleeve 319 is not meshed, the gear ring 315 is separated from the driven gear of the gear set 304, power is input by the fourth motor 11, and the power is transmitted to the rear PTO 13 through the sliding gear set III 303, the gear set 306 and the rear PTO shifting gear set 307 to output power;

mode two: the fifth motor 16 is independently driven, the switch K3302 is closed, the sliding gear set 303 is separated, the change-over switch K4317 is closed, the gear ring meshing sleeve 319 is not meshed, the gear ring 315 is separated from the driven gear of the gear set 304, the power of the fifth motor 16 is decelerated through the sun gear 314 and the planet carrier 313 of the planetary gear mechanism 305, transmitted to the half shaft 308 through the two-gear speed reducer 312 and the main speed reducer 310 and then transmitted to the left and right rear wheels to drive through the differential 309;

mode three: the fourth motor 11 and the fifth motor 16 are independently driven, the switch K3302 is turned on, the sliding gear set III 303 is in an engaged state, the switch K4317 is turned off, the gear ring meshing sleeve 319 is in a non-meshing state, the gear ring 315 is separated from the driven gear of the gear set 304, and the power of the fourth motor 11 is transmitted to the rear PTO 13 after passing through the sliding gear set 303, the gear set II 306 and the rear PTO gear shifting gear set 307; the power of the fifth motor 16 is transmitted to the half shaft 308 through the planetary gear mechanism 305, the two-gear speed reducer 312 and the main speed reducer 310, so as to drive the left and right rear wheels to run;

mode four: the fourth motor 11 and the fifth motor 16 are driven in a double-motor coupling way, the switch K3302 and the switch K4317 are opened, the sliding gear set III 303 is engaged, the gear ring meshing sleeve 319 is engaged, the gear ring 315 is engaged with the driven gear of the gear set 304, the power of the fourth motor 11 and the power of the fifth motor 16 are simultaneously input into the planetary gear mechanism 305 after passing through the first-stage gear set 303 and are synthesized and then transmitted to the two-gear speed reducer 312, and then the main speed reducer 310 is transmitted to the half shaft 308 to drive the left and right rear wheels to run;

when only front power output is needed, the third motor 8 works, the switch K1203 is closed, the first sliding gear set 202 is separated, the switch K2205 is opened, the second sliding gear set 206 is meshed, and the power of the third motor is output through the front PTO3 after passing through the first-stage gear set 201, the second sliding gear set 206, the first three-stage gear set 207 and the front PTO gear shifting gear set 208;

when only middle power output is needed, the third motor 8 works, the switch K1203 is opened, the first sliding gear set 202 is meshed, the switch K2205 is closed, the second sliding gear set 206 is not meshed, and the motor power passes through the first-stage gear set 201, the first sliding gear set 203, the second-stage gear set 209 and the middle PTO gear shifting gear set 210 and then outputs power through the middle PTO 19;

when both front and middle-mounted power take-off is needed, the switch K1203 and the switch K2205 are both opened, the first sliding gear set 202 and the second sliding gear set 206 are both meshed, and after the motor power is transmitted to the second shaft 204 through the first sliding gear set 201, the motor power is transmitted to the front PTO gear shifting gear set 208 through the first sliding gear set 202 and the second sliding gear set 206, and the power is taken off through the front PTO3 and the middle-mounted PTO gear shifting gear set 210 through the middle-mounted PTO 19.

Preferably, the front PTO gear shift set 208, the middle PTO gear shift set 210 and the rear PTO gear shift set 307 output two rotational speeds of 540r/min and 1000r/min by shifting the positions of the driving gears.

A vegetable operation management platform adopts the transmission mode control method.

The beneficial effects of the invention are as follows:

1. the invention changes the power source of the vegetable field operation power machine into an electric driving system from the traditional internal combustion engine, effectively reduces noise and vibration, has high energy utilization rate and less emission pollution, and provides a new choice for the energy driving of the field operation power machine.

2. The front wheels are driven by distributed wheel edges and are arranged on the inner sides of the driving wheels in a scattered manner, so that a transmission route is shortened, a larger space is provided for front axle arrangement, meanwhile, the front wheels are used as power compensation when working conditions are complex or front suspension machines are used, the axle load utilization rate is improved, and the traction performance of the unit is improved. The rear wheel is driven by adopting double-motor power coupling based on a planetary gear mechanism coupling mode, so that the structure is compact, the space occupation ratio is small, and larger impact can be born in the operation of the mechanism.

The whole machine adopts a driving mode of 'front wheel side and rear coupling', combines the benefits of the two driving configurations to a certain extent, makes up the respective defects, and can realize high-efficiency driving under complex working conditions such as different road surfaces through reasonable torque distribution of a front driving axle system after the mode of a rear driving axle system is determined.

3. The motor working state can be divided into single motor driving, double motor coupling and double motor independent driving, the whole load rate of the system and the operation efficiency of the driving system can be improved through the switching of the motor working modes, and the motor working state has strong adaptability to the working environment.

4. Compared with the traditional fuel oil vehicle, the novel diesel engine has the advantages that the transmission shaft, the transfer case and other parts are saved, the structure is simpler, the transmission efficiency is higher, the distribution of the overall layout quality is more uniform, the front and rear axle load quality distribution is reasonable, and the over-bending performance and the running stability of the overall engine are ensured.

5. The invention has front, middle and rear suspension or traction type machine interfaces and a power output interface, changes the traditional driving chassis structure, provides an inter-axle suspension platform, can flexibly arrange field operation machines according to actual operation conditions, is mounted on a frame-type field operation machine, completes operation links such as soil tillage, seedling raising, seeding, field management, harvesting, residual film recovery, agricultural waste pickup and the like in the vegetable production process, realizes one machine with multiple purposes, and improves the operation efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a schematic illustration of a powertrain configuration of the present invention

FIG. 2 is a schematic diagram of the power take-off transmission case of the present invention

FIG. 3 is a schematic diagram of a power coupling transmission of the present invention

FIG. 4 is a schematic diagram of a vegetable management platform to which the present invention is applicable

FIG. 5 is a schematic view of the working mode of the present invention

In the figure:

1. a first motor; 2. a wheel-side speed reducer; 3. front PTO; 4. a front wheel; 5. a second motor; 6. a motor controller C1; 7. a power take-off transmission case; 8. a third motor; 9. a motor controller C2; 10. a power battery pack; 11. a fourth motor; 12. a gear pump; 13. a rear PTO; 14. a power coupling gearbox; 15. a rear wheel; 16. a fifth motor; 17. a motor controller C3; 18. a vehicle controller; 19. a centrally placed PTO; 201. a primary gear set; 202. a first slipping gear set; 203. a change-over switch K1; 204. a second shaft; 205. a change-over switch K2; 206. a second sliding gear set; 207. a third-stage gear set I; 208. a front PTO shift gear set; 209. a third-stage gear set II; 210. a centrally-mounted PTO shift gear set; 301. an output shaft of the motor; 302. a change-over switch K3; 303. a sliding gear set III; 304. a gear set; 305. a planetary gear mechanism; 306. a gear set; 307. a rear PTO shift gear set; 308. a half shaft; 309. a differential; 310. a main speed reducer; 311. a bevel gear set; 312. a two-speed reducer; 313. a planet carrier; 314. a sun gear; 315. a gear ring; 319. a gear ring meshing sleeve; 317. a change-over switch K4;

Detailed Description

The following description of preferred embodiments of the present invention is provided in connection with the accompanying drawings, and it is to be understood that the preferred embodiments described herein are for the purpose of illustration and explanation only and are not intended to limit the invention thereto.

As shown in fig. 1, the present invention provides a configuration scheme of a driving system with multiple power outputs, which comprises a front driving axle system, a control system, a power battery pack 10 and a rear driving axle system, wherein solid lines are mechanically connected, and broken lines are electrically connected.

The front drive axle system comprises a first motor 1, a wheel-side reducer 2, a second motor 5, a third motor 8 and a power output transmission box 7, wherein one end of the wheel-side reducer 1 is connected with an output shaft of a driving motor, the other end of the wheel-side reducer is connected with a driving wheel rim, and the motor is used for reducing speed and increasing torque to transmit power to a front wheel; the third motor power is transmitted into the power output transmission case, is coordinated and controlled by the change-over switch, and is output by the front PTO or the middle PTO to drive the farm machinery to work.

The power battery pack 10 is connected with the frame through a battery bracket mounting hole in a bolt manner and provides a power source for the vegetable field operation power machine. One part of the electric energy of the power battery pack 10 is converted into alternating current by the motor controller and then drives the motor to operate, and the other part of the electric energy is supplied to the whole vehicle controller and other equipment after passing through the voltage reduction module.

The control system comprises a motor controller C16, a motor controller C29, a motor controller C317 and a whole vehicle controller 18, wherein the motor controller C1 is connected with the first motor 1 and the second motor 5, the motor controller C2 is connected with the third motor 8, the motor controller C3 is connected with the fourth motor 11 and the fifth motor 16, and meanwhile, the motor controller C1, the motor controller C2 and the motor controller C3 are connected with the whole vehicle controller. The whole machine controller is used as a core part of a control system of the vegetable field operation power machine, and is communicated with the power battery pack 10, the motor controller C1, the motor controller C2 and the motor controller C3 through a CAN bus, so that the control of the whole machine is realized.

The rear drive axle system comprises a fourth motor 11, a fifth motor 16 and a power coupling gearbox 14, wherein power is input by the fourth motor 11 and the fifth motor 16 and is transmitted to the power coupling gearbox 14, and the final power is transmitted to driving wheels through a half shaft 308 through coordination control of a change-over switch to provide driving force or is transmitted to a rear power output shaft through a rear suspension traction machine tool to perform work.

The power take-off gearbox 7 is shown in fig. 2, and comprises a first-stage gear set 201, a first sliding gear set 202, a switch K1203, a second shaft 204, a switch K2205, a second sliding gear set 206, a first three-stage gear set 207, a second three-stage gear set 210, a front PTO3 gear shift gear set 208, a middle PTO19 gear shift gear set 210 and a middle PTO19, wherein when the switches K1203 and K2205 are opened, the first sliding gear set 202 and the second sliding gear set 206 are both in a meshed state, and when the switches K1203 and K2205 are closed, the first sliding gear set 202 and the second sliding gear set 206 are both in a separated state.

Specifically, the output shaft of the third motor 8 is connected with a driving gear in the primary gear set 201, a driven gear of the primary gear set 201 is connected with the second shaft 204, and driving gears of the sliding gear set I202 and the sliding gear set II 206 are connected with the second shaft 204 through splines; the driven gear of the first sliding gear set 202 is connected with the driving gear of the second third gear set 209, the driven gear of the second sliding gear set 206 is connected with the driving gear of the first third gear set 207, and the two shafts of the driven gears of the first sliding gear set 202 and the second sliding gear set 206 are coaxial; the shaft of the driven gear of the first three-stage gear set 207 is connected with the driving gear of the front PTO shift gear 208 through a spline, the shaft of the driven gear of the shift gear set 207 is a front power output shaft, namely a front PTO3, and a front power output interface is provided for the whole machine; similarly, the shaft of the driven gear of the third-stage gear set II 209 is connected with the driving gear of the middle PTO gear shifting gear 210 through a spline, and the shaft of the driven gear of the middle PTO gear shifting gear set 210 is a middle power output shaft, namely a middle PTO19, so that a middle power output interface is provided for the whole machine.

The power coupling gearbox 14 is shown in fig. 3 and comprises a fourth motor 11, a fifth motor 16, a motor input shaft 301, a change-over switch K3302, a third slip gear set 303, a gear set 304, a planetary gear mechanism 305, a gear set 306, a rear PTO gear shift gear set 307, a half shaft 308, a rear PTO 13, a differential 309, a final drive 310, a two-speed reducer 312, a ring gear engagement sleeve 319 and a change-over switch K4317. Wherein planetary gear mechanism 305 includes a planet carrier 313, a sun gear 314, and a ring gear 315.

When the switch K3302 is opened, the sliding gear set III 303 is in an engaged state, and when the switch K3302 is closed, the sliding gear set III 303 is in a separated state; when the switch K4317 is turned on, the ring gear engaging sleeve 319 is in an engaged state, the driven gear of the gear set 304 is engaged with the ring gear 315, and when the switch K4317 is turned off, the ring gear engaging sleeve 319 is in a disengaged state, the driven gear of the gear set 304 is disengaged from the ring gear 315.

Specifically, the output shaft of the fourth motor 11 is connected with the driving gear of the slip gear set 303 through a spline, and the output shaft of the fifth motor 16 is connected with the driven gear of the gear set 304 and the sun gear 313 in the planetary gear mechanism 305; the driven gear of the gear set 304 may be engaged with the ring gear 315 in the planetary gear mechanism 305 through the ring gear engagement sleeve 319; the shaft of the driven gear of the gear set 306 is connected with a driving gear of the rear PTO gear shifting gear set 307 through a spline, the shaft of the driven gear of the rear PTO gear shifting gear set 307 is a rear PTO 13, and a rear power output interface is provided for the whole machine; the output shaft of the planet carrier 313 of the planetary gear mechanism 305 is connected with a driving gear set of a two-gear speed reducer 312 through a spline, and a driven gear set of the two-gear speed reducer 312 and a driving gear of the main speed reducer 310 are on the same shaft; one end of the differential 309 is connected with a driven gear of the final drive 310, and the other end is connected with the half shaft 308.

The gear pump 12 is connected with a shaft where a driving gear of the gear set 304 in the power coupling box 12 is located through a pair of bevel gear sets 311, and can provide a power source for the hydraulic pump in the motor driving process, so as to provide a hydraulic energy source for lifting devices, braking systems and the like of the whole machine.

The transmission scheme of the power take-off transmission case 7 is as follows:

(1) As shown in fig. 2, when only front power output is needed, the third motor 8 works, power is transmitted to the second shaft 204 through the first-stage gear set 201, at this time, the change-over switch K1203 is closed, the first sliding gear set 202 is in a separated state, the change-over switch K2205 is opened, the second sliding gear set 206 is in a meshed state, and power of the third motor is output through the front PTO3 after passing through the first-stage gear set 201, the second sliding gear set 206, the first three-stage gear set 207 and the front PTO gear set 208, wherein the engagement position with the driven gear can be changed by moving the driving gear of the front PTO gear set 208, so that the front PTO3 has two rotating speeds of 540r/min and 1000r/min to better match with agricultural implements, and the working efficiency is improved;

(2) Similarly, when only mid-set power output is needed, the change-over switch K1203 is opened, the first sliding gear set 202 is meshed, the change-over switch K2205 is closed, the second sliding gear set 206 is in a separated state, and power of the third motor is output through the mid-set PTO3 after passing through the first-stage gear set 201, the first sliding gear set 202, the second three-stage gear set 209 and the mid-set PTO shifting gear set 210, wherein the joint position of the mid-set PTO shifting gear set 210 and the driven gear can be changed by moving the driving gear of the mid-set PTO shifting gear set, so that the mid-set PTO3 has two rotating speeds of 540r/min and 1000r/min, and the agricultural machinery can be matched better, and the operation efficiency is improved;

(3) When power is required to be output in the front and middle positions, K1203 and K2205 are both opened, the first sliding gear set 202 and the second sliding gear set 206 are both in an engaged state, and at the moment, the power of the third motor is transmitted to the second shaft 204 through the first-stage gear set 201 and then transmitted through the first sliding gear set 202 and the second sliding gear set 206 through the middle and front PTO gear shifting gear sets respectively, so that a front power output interface and a middle power output interface are provided for the whole machine. Therefore, the state of the change-over switch can be controlled according to the actual working requirement so as to obtain the required power output position.

The power coupling transmission 14 has the following transmission scheme:

the power coupling gearbox of the power system can be used for four different working modes, namely four modes of independent driving of the fourth motor 11, independent driving of the fifth motor 16, independent driving of the fourth motor 11 and the fifth motor 16, and double-motor coupling driving.

(1) As shown in fig. 3, when the fourth motor 11 is driven alone, the switch K3302 is turned on, the third slip gear set 303 is in a meshed state, the switch K4317 is turned off, the ring gear engaging sleeve 313 is in a non-meshed state, the driven gear of the gear set 304 is separated from the ring gear 315, and at this time, power is input by the fourth motor and transmitted to the rear PTO11 through the slip gear set 303, the gear set 306 and the rear PTO gear shift gear set 307.

At this time, if the switch K4317 is turned on, the ring gear engaging sleeve 313 is in an engaged state, the driven gear of the gear set 304 is engaged with the ring gear 315, at this time, part of the power of the fourth motor is transmitted to the ring gear 315 of the planetary gear mechanism 305 through the gear set 304, and is output by the planet carrier 314, and is transmitted to the final drive 310 through the two-speed reducer 312, and then to the half shaft 308, so as to drive the left and right rear wheels. In addition, when the fourth motor 11 is independently driven, the switch K3302 is turned on, and the switch K4317 is turned off, so that the bevel gear set 311 can be driven to drive the gear pump 12 to work, and hydraulic energy is provided for the whole machine.

(2) When the fifth motor 16 is driven independently, the switch K3302 is turned off, the sliding gear set 303 is in a separated state, the switch K4317 is turned off, the gear ring meshing sleeve 313 is in a non-meshing state, the driven gear of the gear set 304 is separated from the gear ring 315, the power is decelerated by the sun gear 314 and the planet carrier 313 of the planetary gear mechanism 305, transmitted to the half shafts through the two-gear speed reducer 312 and the main speed reducer 310 and then transmitted to the left and right rear wheels through the differential 309, and meanwhile forward and reverse rotation of the fifth motor can be controlled to realize forward and reverse rotation of the whole machine. In addition, when the fifth motor 16 is driven independently, the switch K3302 is turned off, and the switch K4317 is turned on, so that the bevel gear set 311 can be driven to drive the gear pump 12 to work, and hydraulic energy is provided for the whole machine.

(3) When the fourth motor 11 and the fifth motor 16 are independently driven: the switch K3302 is opened, the sliding gear set III 303 is in an engaged state, the switch K4317 is closed, the gear ring meshing sleeve 319 is in a non-meshing state, the gear ring 315 is separated from the driven gear of the gear set 304, and the power of the fourth motor 11 is transmitted to the rear PTO 13 after passing through the sliding gear set 303, the gear set II 306 and the rear PTO gear shifting gear set 307; the power of the fifth motor 16 is transmitted to the half shaft 308 through the planetary gear mechanism 305, the two-gear speed reducer 312 and the main speed reducer 310, so that the left and right rear wheels are driven to run, and the power is suitable for high-power running PTO working conditions.

(4) When the fourth motor 11 and the fifth motor 16 are driven in a coupled manner: the switch K3302 and the switch K4317 are both in an on state, the sliding gear set three 303 is in an engaged state, the gear ring meshing sleeve 319 is in a meshing state, the gear ring 315 is engaged with the driven gear of the gear set 304, the power of the fourth motor 11 is simultaneously input into the planetary gear mechanism 305 after being coupled with the power of the fifth motor 16 through the first-stage gear set 303, and then is transmitted to the half shaft 308 by the main speed reducer 310 to drive the left and right rear wheels to run, the driving gear of the rear PTO gear set 307 is placed in a neutral gear, namely, the rear PTO19 does not have power output when the driving gear of the rear PTO gear set 307 is not engaged with the driven gear, and the rear PTO19 can output power when the driving gear of the rear PTO gear set 307 is engaged with the driven gear.

According to the transmission route, the invention also provides a vegetable operation management platform as shown in fig. 4, which comprises a front drive axle system, a control system, a power battery pack 10 and a rear drive axle system in the driving system, wherein a characteristic data table and a condition truth table of a motor connected with the front drive axle system, the control system, the power battery pack 10 and the rear drive axle system are stored in a motor controller C1, a motor controller C2 and a motor controller C3 for judging the state of the whole vehicle. The motor controller transmits the current state parameters of the connected motor to the whole machine controller 18 in a CAN bus mode, and the motor controller performs corresponding processing by combining the data (such as an accelerator pedal, a vehicle speed, traction force, tilling depth, current and the like) monitored by the whole machine controller 18, so that a change-over switch CAN be controlled at a proper moment, and the field complex operation working condition requirement CAN be met.

The working conditions of the components in each mode are summarized as shown in fig. 5 according to the power output position and the power requirement, wherein, the operation of the motor is shown, the change-over switch is in an on state, the non-operation of the motor is shown, and the change-over switch is in an off state.

Specific modes of operation are exemplified as follows:

when the working platform performs operations without power output, such as plowing, road transportation and the like, the power of the motor is transmitted to the wheels through the transmission mechanism, and the farm machinery can be connected with the front suspension, the shaft or the rear suspension according to the situation. The control system judges the working state of the whole machine by monitoring parameters such as an accelerator pedal, a vehicle speed, a load and the like in real time, and when the rated power of the fifth motor is monitored to be larger than the traction power of the whole machine, the fifth motor 16 is switched to be driven independently to realize low-power running, the first motor 2 and the second motor 5 do not output, and the fifth motor is in a follow-up state; when the machine is suspended in the front or the middle of the machine or high-power operation is carried out, the rated power of the fifth motor is monitored to be smaller than the traction power of the whole machine, the whole machine cannot work normally due to overlarge traction, at the moment, the first motor 2 and the second motor 5 work, K3302 and K4317 are opened, and the rear drive is selected as the coupling drive of the fourth motor 11 and the fifth motor 16 so as to realize high-power running.

When the power output is needed by the working platform, the power of the motor is transmitted to the wheels and is also transmitted to the front, middle or rear PTO, so that a power output interface is provided for the whole machine. The control system monitors the operation of the third motor by changing the states of the change-over switch K1203 and the change-over switch K2205 to select the output of the front power and the middle power, the torque required by the front wheels is increased at the moment, and the first motor and the second motor in the front driving system work for torque compensation. When front-end output is needed, the first motor 2, the second motor 5 and the third motor 8 in the front driving system work, the change-over switch K2205 is started to control the engagement of the sliding gear set II 206, the rear driving system is used for switching the independent driving of the fifth motor 16 so as to realize low-medium power driving operation, and high-power driving is realized when the double motors are coupled; when the middle-set output is needed, the first motor, the second motor and the third motor in the front driving system work, the change-over switch K1203 is started to control the first 202 of the sliding gear set to be meshed, at the moment, the fifth motor 16 in the rear driving system is independently driven to realize low-medium power running, and the fourth motor and the fifth motor are coupled to realize high-power running; when the rear-mounted output is selected, when the rated power of the fourth motor is monitored to be larger than the traction power of the whole machine, the fourth motor is switched to be independently driven to carry out low-power PTO operation; when the rated power of the fourth motor is monitored to be smaller than the traction power of the whole machine, the first motor and the second motor in the front driving system work at the moment, and the rear driving system switches the double motors of the fourth motor and the fifth motor to independently drive, so that high-power PTO operation is realized. In addition, power take-off speed shifting may be accomplished by controlling the front PTO shift gearset 208, the mid-PTO shift gearset 210, and the rear PTO shift gearset 307.

What is not described in detail in this specification is prior art known to those skilled in the art.

Finally, it should be noted that: the foregoing is merely a preferred example of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The multi-power output driving system for vegetable field operation is characterized by comprising a front driving axle system, a control system, a power battery pack (10) and a rear driving axle system;

the front drive axle system comprises a first motor (1), a hub reduction gear (2), a second motor (5), a third motor (8) and a power output transmission case (7); the third motor (8) is in transmission connection with the power output transmission case (7) and the power battery pack (10) at the same time; the first motor (2) and the second motor (5) are respectively and simultaneously connected with the power battery pack (10) in a transmission way, and are respectively connected with a driving wheel rim;

the rear drive axle system comprises a fourth motor (11), a fifth motor (16) and a power coupling gearbox (14); the fourth motor (11) and the fifth motor (16) are respectively and simultaneously connected with the power coupling gearbox (14) and the power battery pack (10) in a transmission way;

the control system comprises a motor controller C1 (6), a motor controller C2 (9), a motor controller C3 (17) and a whole vehicle controller (18), wherein the whole vehicle controller (18) is communicated with the power battery pack through a CAN bus; the whole vehicle controller (18) is communicated with the front drive axle system through the motor controller C1 (6) and the motor controller C2 (9); the whole vehicle controller (18) is communicated with the rear drive axle system through a motor controller C3 (17).

2. A multi-power output transmission structure for vegetable field operation, characterized in that the multi-power output driving system for vegetable field operation of claim 1 is adopted;

the power output transmission case (7) comprises a first-stage gear set (201), a first sliding gear set (202), a switch K1 (203), a second shaft (204), a switch K2 (205), a second sliding gear set (206), a first three-stage gear set (207), a second three-stage gear set (209), a front PTO gear shifting gear set (208) and a middle PTO gear shifting gear set (210);

an output shaft of the third motor (8) is connected with a driving gear of the first-stage gear set (201), a driven gear of the first-stage gear set (201) is connected with the second shaft (204), and driving gears of the first sliding gear set (202) and the second sliding gear set (206) are respectively connected with the second shaft (204); the driven gear of the first sliding gear set (202) is connected with the driving gear of the first third gear set (207), and the driven gear of the second sliding gear set (206) is connected with the driving gear of the second third gear set (209); the driven gear of the first sliding gear set (202) and the driven gear of the second sliding gear set (206) are coaxially arranged; the driven gear of the third-stage gear set I (207) is a front PTO (3), and the front PTO (3) is connected with a driving gear of a front PTO gear shifting gear (208); the driven gear of the third-stage gear set II (209) is provided with a centrally-mounted PTO (19), and the centrally-mounted PTO (19) is connected with the driving gear of the centrally-mounted PTO gear shifting gear set (210);

the power coupling gearbox (14) comprises a fourth motor (11), a fifth motor (16), a motor input shaft (301), a switch K3 (302), a sliding gear set (303), a gear set (304), a planetary gear mechanism (305), a gear set (306), a rear PTO gear shifting gear set (307), a half shaft (308), a differential (309), a main speed reducer (310), a bevel gear set (311), a two-gear speed reducer (312), a gear ring meshing sleeve (319) and a switch K4 (317);

the planetary gear mechanism (305) is composed of a planet carrier (313), a sun gear (314) and a gear ring (315);

an output shaft of the fourth motor (11) is connected with a driving gear of the sliding gear set (303), and an output shaft of the fifth motor (16) is connected with a driven gear of the gear set (304) and a sun gear in the planetary gear mechanism (305); the driven gear of the gear set (304) is engaged with a gear ring (315) in the planetary gear mechanism (305) through a gear ring meshing sleeve (319); the driven gear of the gear set (306) is connected with the driving gear of the rear PTO gear shifting gear set (307), and the shaft of the driven gear of the rear PTO gear shifting gear set (307) is the rear PTO (13);

an output shaft of a planet carrier (313) of the planetary gear mechanism (305) is connected with a driving gear set of a two-gear speed reducer (312), and a driven gear set of the two-gear speed reducer (312) is coaxially arranged with a driving gear of a main speed reducer (310); one end of the differential mechanism (309) is connected with a driven gear of the main speed reducer (310), and the other end is connected with the half shaft (308);

the engagement and the disengagement of the first sliding gear set (202), the second sliding gear set (206) and the third sliding gear set (303) are controlled through the change-over switches K1 (203), K2 (205) and K3 (302); the engagement and disengagement of the driven gear of the gear set (304) with the ring gear (315) is controlled by a change-over switch K4 (317).

3. A transmission mode control method based on a transmission structure for multiple power outputs for vegetable field operations as claimed in claim 2, characterized in that,

when only rear-mounted output power is needed, the power coupling gearbox (14) comprises four transmission modes;

mode one: the fourth motor (11) is independently driven, the switch K3 (302) is opened, the sliding gear set III (303) is meshed, the switch K4 (317) is closed, the gear ring meshing sleeve (319) is not meshed, the gear ring (315) is separated from the driven gear of the gear set (304), power is input by the fourth motor (11), and the power is transmitted to the rear PTO (13) through the sliding gear set III (303), the gear set (306) and the rear PTO gear shifting gear set (307);

mode two: the fifth motor (16) is independently driven, the change-over switch K3 (302) is closed, the sliding gear set (303) is separated, the change-over switch K4 (317) is closed, the gear ring meshing sleeve (319) is not meshed, the gear ring (315) is separated from the driven gear of the gear set (304), the power of the fifth motor (16) is decelerated through the sun gear (314) and the planet carrier (313) of the planetary gear mechanism (305), and then transmitted to the half shaft (308) through the differential mechanism (309) after passing through the two-gear speed reducer (312) and the main speed reducer (310) so as to drive the left and right rear wheels to run;

mode three: the fourth motor (11) and the fifth motor (16) are independently driven, the switch K3 (302) is opened, the sliding gear set III (303) is in an engaged state, the switch K4 (317) is closed, the gear ring meshing sleeve (319) is in a non-meshing state, the gear ring (315) is separated from the driven gear of the gear set (304), and the power of the fourth motor (11) is transmitted to the rear PTO (13) after passing through the sliding gear set (303), the gear set II (306) and the rear PTO gear shifting gear set (307); the power of the fifth motor (16) is transmitted to the half shaft (308) through the planetary gear mechanism (305), the two-gear speed reducer (312) and the main speed reducer (310), so as to drive the left and right rear wheels to run;

mode four: the fourth motor (11) and the fifth motor (16) are driven in a double-motor coupling way, the switch K3 (302) and the switch K4 (317) are both opened, the sliding gear set III (303) is engaged, the gear ring meshing sleeve (319) is engaged, the gear ring (315) is engaged with the driven gear of the gear set (304), the power of the fourth motor (11) is synthesized with the power of the fifth motor (16) through the first-stage gear set (303) and then is transmitted to the two-gear speed reducer (312) after being input into the planetary gear mechanism (305) for synthesis, and then the power is transmitted to the half shaft (308) through the main speed reducer (310) to drive the left and right rear wheels to run;

when only front power output is needed, the third motor (8) works, the switch K1 (203) is closed, the sliding gear set I (202) is separated, the switch K2 (205) is opened, the sliding gear set II (206) is meshed, and the third motor power passes through the first-stage gear set (201), the sliding gear set II (206), the third-stage gear set I (207) and the front PTO gear shifting gear set (208) and then outputs power through the front PTO (3);

when only power output is needed in the middle, the third motor (8) works, the switch K1 (203) is opened, the sliding gear set I (202) is meshed, the switch K2 (205) is closed, the sliding gear set II (206) is not meshed, and the motor power passes through the first-stage gear set (201), the sliding gear set I (203), the third-stage gear set II (209) and the middle PTO gear shifting gear set (210) and then outputs power through the middle PTO (19);

when the front-mounted and middle-mounted power transmission is required, the switch K1 (203) and the switch K2 (205) are both opened, the first sliding gear set (202) and the second sliding gear set (206) are both meshed, and after the motor power is transmitted to the second shaft (204) through the first sliding gear set (201), the motor power is transmitted to the front-mounted PTO gear shifting gear set (208) through the first sliding gear set (202) and the second sliding gear set (206), and the power is output through the middle-mounted PTO (19) through the front-mounted PTO (3) and the middle-mounted PTO gear shifting gear set (210).

4. The transmission mode control method according to claim 3, characterized in that,

the front PTO gear shifting gear set (208), the middle PTO gear shifting gear set (210) and the rear PTO gear shifting gear set (307) output two rotating speeds of 540r/min and 1000r/min by moving the positions of the driving gears.

5. A vegetable job management platform, characterized in that the platform adopts the transmission mode control method according to any one of claims 3-4.