Dual motor drive control system and agricultural machine

Abstract

The utility model discloses a double motor drive control system and agricultural machinery, including axle drive shaft, first motor shaft, second motor shaft, operation transmission shaft and relay drive shaft, operation transmission shaft includes the first axle section with the operation device connection, and the second axle section is connected with the first axle section through the first clutch device, and the relay drive shaft is empty on the second axle section, and the axle gear group of meshing transmission is established between the relay drive shaft and axle drive shaft, is equipped with the first gear shifting switch device on the first motor shaft, and the first gear shifting switch device is used for selecting one of operation transmission shaft and relay drive shaft to carry out power transmission, and the second gear shifting switch device that can switch different speed ratio is established between the second motor shaft and relay drive shaft, compared with prior art, can obviously play the role of simplifying structure, reducing production difficulty and improving reliability.

Description

Technical Field

[0001] This utility model belongs to the field of dual-motor drive technology, and in particular relates to a dual-motor drive control system and agricultural machinery. Background Technology

[0002] Traditional tractors mostly use diesel engines, which suffer from problems such as high noise, heavy pollution, inconvenient operation due to multiple gears, low efficiency, and high fuel waste and costs. Therefore, energy-saving and environmentally friendly new energy tractors have become a development trend.

[0003] Currently, due to the driving requirements for both driving and operation, new energy tractors are generally equipped with dual motors. However, in order to achieve independent drive mode and coupled drive mode, the existing dual motor transmission device has several planetary gear mechanisms, which leads to problems such as complex structure, high production difficulty, and low reliability. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides a dual-motor drive control system and agricultural machinery, aiming to solve the technical problems of complex structure and high production difficulty caused by the planetary gear mechanism in the existing dual-motor drive device.

[0005] To achieve the above objectives, the first aspect of this utility model provides a dual-motor drive control system, wherein the dual-motor drive control system includes an axle drive shaft, a first motor shaft, a second motor shaft, a working drive shaft, and a transfer drive shaft; the axle drive shaft is connected to an axle device; the first motor shaft is connected to a first motor; the second motor shaft is connected to a second motor; the working drive shaft includes a first shaft segment connected to a working device, and a second shaft segment connected to the first shaft segment via a first clutch device; the transfer drive shaft is loosely fitted onto the second shaft segment; wherein, an axle gear set for meshing transmission is provided between the transfer drive shaft and the axle drive shaft, a first gear shifting device is provided on the first motor shaft, the first gear shifting device being used to select one of the working drive shaft and the transfer drive shaft for power transmission, and a second gear shifting device capable of switching different speed ratios is provided between the second motor shaft and the transfer drive shaft.

[0006] In one embodiment of the present invention, the first gear shifting device includes a first gear set, a second gear set, and a first engagement device. A first gear set is provided between the first motor shaft and the working transmission shaft for meshing transmission, and a second gear set is provided between the first motor shaft and the transfer transmission shaft for meshing transmission. The first engagement device is located on the first motor shaft and can switch between being disconnected from both gear sets and being engaged with one of the gear sets.

[0007] In one embodiment of this utility model, the first gear set includes a first driving gear disposed on the first motor shaft and a first driven gear disposed on the second shaft segment and meshing with the first driving gear. The second gear set includes a second driving gear disposed on the first motor shaft and a second driven gear disposed on the transfer transmission shaft and meshing with the second driving gear. The first engagement device is disposed on the first motor shaft and located between the first driving gear and the second driving gear, and can switch between being disconnected from both driving gears and being engaged with one of the driving gears.

[0008] In one embodiment of the present invention, the second gear shifting device includes a third gear set, a fourth gear set, and a second engagement device. The third gear set and the fourth gear set are respectively staggered between the second motor shaft and the transfer transmission shaft and are both configured for meshing transmission. The second engagement device is located between the third gear set and the fourth gear set and can switch between being disconnected from both gear sets and being engaged with one of the gear sets.

[0009] In one embodiment of this utility model, the third gear set includes a third driving gear disposed on the second motor shaft and a third driven gear disposed on the transfer transmission shaft and meshing with the third driving gear; the fourth gear set includes a fourth driving gear disposed on the second motor shaft and a fourth driven gear disposed on the transfer transmission shaft and meshing with the fourth driving gear; the third driven gear of the third gear set and the fourth driven gear of the fourth gear set are both loosely fitted on the transfer transmission shaft; the second engagement device is disposed on the transfer transmission shaft and located between the third driven gear and the fourth driven gear.

[0010] In one embodiment of the present invention, the working drive shaft further includes a third shaft segment connected to the second shaft segment via a second clutch device, and an engine is connected to the end of the third shaft segment away from the second shaft segment.

[0011] In one embodiment of this utility model, the engine also drives a generator connected to supply power to the first motor and the second motor.

[0012] In one embodiment of this utility model, the axle drive shaft includes a front axle section and a rear axle section connected by a third clutch device. The axle gear set includes an axle drive gear on the transfer drive shaft and an axle driven gear on the rear axle section. The third clutch device is a four-wheel drive clutch and can switch between engaging only with the rear axle section and engaging with both axle sections.

[0013] In one embodiment of this utility model, the first motor shaft and the second motor shaft are arranged in parallel at a distance at a first height, the working transmission shaft is located at a second height lower than the first height and between the first motor shaft and the second motor shaft, and the axle drive shaft is located at a third height lower than the second height.

[0014] In one embodiment of the present invention, a first gear shifting device is provided on the first side of the axle gear set, and a second gear shifting device is provided on the second side of the axle gear set.

[0015] To achieve the above objectives, a second aspect of this utility model provides an agricultural machine, wherein the agricultural machine includes a dual-motor drive control system as described above.

[0016] Through the above technical solution, the dual-motor drive control system provided by this utility model has the following beneficial effects: When using the aforementioned dual-motor drive control system, which includes an axle drive shaft, a first motor shaft, a second motor shaft, a working drive shaft, and a transfer drive shaft, the working drive shaft includes a first shaft segment connected to the working device and a second shaft segment connected to the first shaft segment via a first clutch device. The transfer drive shaft is loosely fitted onto the second shaft segment, and an axle gear set for meshing transmission is provided between the transfer drive shaft and the axle drive shaft. A first gear shifting device is provided on the first motor shaft, which is used to select one of the working drive shaft and the transfer drive shaft for power transmission. A second gear shifting device capable of switching different speed ratios is provided between the second motor shaft and the transfer drive shaft. By switching and controlling the states of the first clutch device, the first gear shifting device, and the second gear shifting device respectively, independent driving and coupled driving of the first motor and the second motor can be achieved. Compared with the prior art, this significantly simplifies the structure, reduces production difficulty, and improves reliability.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the structure of a dual-motor drive control system according to an embodiment of the present invention; Figure 2 This is a spatial arrangement diagram of the first motor shaft, the second motor shaft, the working transmission shaft, and the axle drive shaft according to one embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached figures: Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] The dual-motor drive control system and agricultural machinery of this utility model are described below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, this utility model provides a dual-motor drive control system, wherein the dual-motor drive control system includes: The axle drive shaft 100 is connected to the axle assembly; The first motor shaft 200 is connected to the first motor 201; The second motor shaft 300 is connected to the second motor 301; The working drive shaft 400 includes a first shaft section 410 connected to the working device 401, and a second shaft section 420 connected to the first shaft section 410 via a first clutch device 440; The drive shaft 500 is loosely fitted onto the second shaft section 420; Among them, an axle gear set 140 is provided between the transfer drive shaft 500 and the axle drive shaft 100 for meshing transmission; a first gear shifting device is provided on the first motor shaft 200, which is used to select one of the working drive shaft 400 and the transfer drive shaft 500 for power transmission; and a second gear shifting device capable of switching different speed ratios is provided between the second motor shaft 300 and the transfer drive shaft 500.

[0023] When using the aforementioned dual-motor drive control system, since it includes an axle drive shaft 100, a first motor shaft 200, a second motor shaft 300, a working drive shaft 400, and a transfer drive shaft 500, the working drive shaft 400 includes a first shaft section 410 connected to the working device 401, and a second shaft section 420 connected to the first shaft section 410 via a first clutch device 440. The transfer drive shaft 500 is loosely fitted onto the second shaft section 420, and an axle gear set 140 for meshing transmission is provided between the transfer drive shaft 500 and the axle drive shaft 100. The first motor shaft 200 is provided with a first... A gear shifting device is provided. The first gear shifting device is used to select one of the working drive shaft 400 and the transfer drive shaft 500 for power transmission. A second gear shifting device capable of switching different speed ratios is provided between the second motor shaft 300 and the transfer drive shaft 500. By switching and controlling the states of the first clutch device 440, the first gear shifting device and the second gear shifting device respectively, the independent drive and coupled drive of the first motor 201 and the second motor 301 can be realized. Compared with the prior art, it can obviously simplify the structure, reduce the production difficulty and improve the reliability.

[0024] Specifically, the axle drive shaft 100, the first motor shaft 200, the second motor shaft 300, and the working transmission shaft 400 can all be arranged to extend along the front-rear direction of the vehicle frame, and the relative positional relationship between each shaft can be set to meet the power transmission requirements. The axle drive shaft 100 can be connected to one or both of the front axle assembly 101 and the rear axle assembly 102. The output power of the first motor 201 and the second motor 301 can be the same or different. The working transmission shaft 400 is a PTO (Power Take-Off) shaft. The working device 401 connected to the first shaft segment 410 of the working transmission shaft 400 includes, but is not limited to, one of a rotary tillage device, a seeding device, a ditching device, and a baling device. It should be noted that the axle drive shaft 100, the first motor shaft 200, the second motor shaft 300, the working transmission shaft 400, and the adapter transmission shaft 500 can all be rotatably mounted on the vehicle frame.

[0025] In one embodiment of this utility model, the first gear shifting device includes a first gear set 600, a second gear set 700, and a first engagement device 210. The first gear set 600 engages with the first motor shaft 200 and the working transmission shaft 400, while the second gear set 700 engages with the first motor shaft 200 and the transfer transmission shaft 500. The first engagement device 210 is mounted on the first motor shaft 200 and can switch between being disengaged from both gear sets and engaging with one of them. That is, by controlling the first engagement device 210, the power from the first motor shaft 200 can be selectively transmitted to either the working transmission shaft 400 or the transfer transmission shaft 500.

[0026] In one embodiment of this utility model, the dual-motor drive control system further includes a control device, which can be configured as follows: Upon receiving a single motor travel command, the first clutch device 440 is disengaged and the second gear set 700 and the second shift switching device are selected to switch to the power transmission state. Upon receiving a dual-motor travel command, the first clutch device 440 is disengaged and the second gear set 700 and the second gear shifting device are both switched to power transmission mode. Upon receiving a pure electric operation command, the first clutch device 440 is engaged and the first gear set 600 and the second gear shifting device are switched to power transmission mode.

[0027] Understandably, when the dual-motor drive control system is configured for pure electric drive, there are single-motor independent driving mode under single-motor driving command, dual-motor coupled driving mode under dual-motor driving command, and driving mode where the first motor drives the second motor for operation under pure electric operation command, in order to adapt to the needs of different operation scenarios.

[0028] Specifically, in scenarios involving transportation and relocation or low-power walking and traction, the operator can issue a single-motor walking command so that the first motor 201 or the second motor 301 can independently drive the axle drive shaft 100; in complex terrain or when high-power walking and getting out of trouble, heavy-load traction, or walking and plowing are required, the operator can issue a dual-motor walking command so that the first motor 201 and the second motor 301 can jointly drive the axle drive shaft 100; when low-power rotary tillage, sowing, ditching, or baling operations are required, the operator can issue a pure electric operation command so that the first motor 201 drives the work transmission shaft 400 and the second motor 301 drives the axle drive shaft 100, allowing for simultaneous walking and operation.

[0029] Furthermore, the control device is configured to: upon receiving a single motor travel command, control the first clutch device 440 to disengage and select one of the second gear set 700 and the second shift switch device to switch to the power transmission state, including: Upon receiving a single motor travel command and confirming that the second motor 301 is operating normally, the first clutch device 440 is disengaged and the second gear shifting device is switched to power transmission mode. Upon receiving a single motor travel command and determining that the second motor 301 is faulty, the first clutch device 440 is disengaged and the first engagement device 210 is controlled to select the second gear set 700 to switch to power transmission state.

[0030] Furthermore, under a single-motor travel command, the second motor 301 is preferentially used as the single-motor drive for the axle drive shaft 100. If the second motor 301 is determined to be faulty, the first motor 201 is activated as the backup drive for the axle drive shaft 100, thereby greatly improving range and reliability. Even further, upon receiving a single-motor travel command, the second motor 301 can be checked to determine if it is faulty. If no fault is found, the second motor 301 is activated, and the second gear shifting device is controlled to switch to power transmission mode. If a fault is found, the first motor 201 is activated, and the first engagement device 210 is controlled to select the second gear set 700 to switch to power transmission mode. It should be noted that the second motor 301 is prioritized for driving the axle drive shaft 100 in order to facilitate speed control of the vehicle speed under the single motor driving command. This is because the first motor shaft 200 is already equipped with the first gear set 600 and the second gear set 700, while the second motor shaft 300 can be equipped with other gear sets in addition to the third gear set 800 to expand the speed control.

[0031] In one embodiment of this utility model, the first gear set 600 includes a first driving gear 610 mounted on the first motor shaft 200 and a first driven gear 620 mounted on the second shaft section 420 and meshing with the first driving gear 610. Alternatively, the first driven gear 620 can be mounted on the first shaft section 410. The second gear set 700 includes a second driving gear 710 mounted on the first motor shaft 200 and a second driven gear 720 mounted on the adapter shaft 500 and meshing with the second driving gear 710. A first engagement device 210 is mounted on the first motor shaft 200 and located between the first driving gear 610 and the second driving gear 710, and can switch between being disconnected from both driving gears and engaging with one of them. That is, by simply adding a first engagement device 210, the power interruption of the first motor shaft 200 and the power transmission to the working drive shaft 400 or the adapter shaft 500 can be achieved, simplifying control. Specifically, when the first engagement device 210 is provided on the first motor shaft 200, the first driving gear 610 and the second driving gear 710 on the first motor shaft 200 can be rotatably provided on the first motor shaft 200, while the first driven gear 620 and the second driven gear 720 are fixedly provided. The first engagement device 210 includes, but is not limited to, a shift sleeve.

[0032] More specifically, when the first motor 201 is not required to drive the axle drive shaft 100, the first engagement device 210 is disengaged from both drive gears, meaning that both the first gear set 600 and the second gear set 700 are switched to a power interruption state. When the first motor 201 is required to drive the axle drive shaft 100, the first engagement device 210 is disengaged from the first drive gear 610 and engaged with the second drive gear 710, meaning that the first gear set 600 is switched to a power interruption state and the second gear set 700 is switched to a power transmission state. When the first motor 201 is required to drive the working drive shaft 400, the first engagement device 210 is disengaged from the second drive gear 710 and engaged with the first drive gear 610, meaning that the second gear set 600 is switched to a power interruption state and the first gear set 700 is switched to a power transmission state. Of course, this utility model is not limited to this. There can be two first engagement devices 210. The two first engagement devices 210 are respectively configured to correspond one-to-one with the first drive gear 610 and the second drive gear 710. That is, one of the first engagement devices 210 controls the connection and disconnection between the first drive gear 610 and the first motor shaft 200, and the other first engagement device 210 controls the connection and disconnection between the second drive gear 710 and the first motor shaft 200.

[0033] In one embodiment of this utility model, the second gear shifting device includes a third gear set 800, a fourth gear set 900, and a second engagement device 510. The third gear set 800 and the fourth gear set 900 are staggered between the second motor shaft 300 and the transfer drive shaft 500, and both are configured for meshing transmission. The second engagement device 510 is located between the third gear set 800 and the fourth gear set 900, and can switch between being disconnected from both gear sets and engaging with one of the gear sets. This allows the power transmitted from the second motor shaft 300 to the transfer drive shaft 500 to select different gear sets for speed change through the second engagement device 510, thereby achieving gear shifting with different speed ratios to further adapt to the needs of different operating scenarios. Specifically, in order to achieve switching between different speed ratios, the speed ratios of the third gear set 800 and the fourth gear set 900 are set to be different. In the third gear set 800, the number of teeth of the third driving gear 810 is equal to or less than the number of teeth of the third driven gear 820, and in the fourth gear set 900, the number of teeth of the fourth driving gear 910 is greater than the number of teeth of the fourth driven gear 920. That is, the third gear set 800 is in low speed gear, and the fourth gear set 900 is in high speed gear. In addition, the second engagement device 510 includes, but is not limited to, a shift sleeve.

[0034] In one embodiment of the present invention, the third gear set 800 includes a third driving gear 810 disposed on the second motor shaft 300 and a third driven gear 820 disposed on the adapter transmission shaft 500 and meshing with the third driving gear 810; the fourth gear set 900 includes a fourth driving gear 910 disposed on the second motor shaft 300 and a fourth driven gear 920 disposed on the adapter transmission shaft 500 and meshing with the fourth driving gear 910.

[0035] More specifically, the second engagement device 510 may be disposed on the adapter drive shaft 500 and located between the third driven gear 820 and the fourth driven gear 920. The third driven gear 820 and the fourth driven gear 920 are both disposed in the adapter drive shaft 500, and the third driving gear 810 and the fourth driving gear 910 are both disposed in a fixed manner. The second engagement device 510 may switch between being disconnected from both driven gears and engaging one of the driven gears. Of course, this utility model is not limited to this. The number of second engagement devices 510 can be two. The two second engagement devices 510 are respectively arranged in a one-to-one correspondence with the third gear set 800 and the fourth gear set 900. In another embodiment, the second engagement device 510 can also be arranged on the second motor shaft 300 and located between the third driving gear 810 and the fourth driving gear 910. The third driving gear 810 and the fourth driving gear 910 are both rotatable, and the third driven gear 820 and the fourth driven gear 920 are both fixed. The second engagement device 510 can switch between being disconnected from both driving gears and engaging with one of the driven gears.

[0036] In one embodiment of this utility model, the working drive shaft 400 further includes a third shaft segment 430 connected to the second shaft segment 420 via a second clutch device 450. An engine 431 is connected to the end of the third shaft segment 430 furthest from the second shaft segment 420. That is, by adding the second clutch device 450 and the engine 431, the dual-motor drive control system provided by this utility model not only has pure electric drive but also hybrid drive capabilities, thereby significantly improving the working capacity and range of agricultural machinery, and enabling all-weather operation.

[0037] In one embodiment of this invention, the engine 431 also drives a generator 432 connected to supply power to the first motor 201 and the second motor 301. The addition of the generator 432 enables the dual-motor drive control system provided by this invention to also have a range-extended drive mode.

[0038] Furthermore, the control device is also configured as follows: Upon receiving the first hybrid operation command, the system controls the first clutch device 440 and the second clutch device 450 to engage respectively and selects at least one of the second gear set 700 and the second shift switching device to switch to the power transmission state. Upon receiving the second hybrid operation command, the system controls the first clutch device 440 and the second clutch device 450 to engage respectively, and controls the first gear set 600 and the second gear shifting device to switch to power transmission mode. Upon receiving a range extension command, the system controls the first clutch 440 to engage, the second clutch 450 to disengage, and the first gear set 600 and the second gear shifting device to switch to power transmission mode.

[0039] Understandably, by adding an engine 431 to the working drive shaft 400 and having the engine 431 drive a generator 432, the dual-motor drive control system provided by this utility model not only has pure electric drive but also hybrid drive, thereby further enhancing the working capacity and range of agricultural machinery, and enabling all-weather operation. Understandably, when the dual-motor drive control system is configured for hybrid drive, there are different modes: engine operation drive and single-motor or dual-motor walking drive under the first hybrid operation command; engine and first motor coupled operation drive and second motor independent walking drive under the second hybrid operation command; and engine 431 only drives the generator 432 to generate electricity under the range-extending operation command, with the first motor operating and the second motor independently walking, to further adapt to different operating scenarios. Specifically, the engine 431 has an engine gear, and the generator 432 has a generator gear; the engine gear and the generator gear are constantly meshed.

[0040] Furthermore, when facing complex and challenging terrains requiring high power for rotary tillage, sowing, ditching, or baling operations, the operator can issue a first hybrid operation command, causing the engine 431 to drive the working drive shaft 400, and the first motor 201 and / or the second motor 301 to drive the axle drive shaft 100. Simultaneously, the engine 431 can also supply power to the batteries of the first motor 201 and the second motor 301 via the generator 432. In operation scenarios where the working drive shaft 400 requires high torque output, such as deep tillage, the operator can issue a second hybrid operation command, causing the engine 431 and the first motor 201 to drive the axle drive shaft 100. The first motor 431 drives the working drive shaft 400, and the second motor 301 independently drives the axle drive shaft 100. At the same time, the engine 431 can also supply power to the power supply batteries of the first motor 201 and the second motor 301 through the generator 432. When the power supply battery is insufficient, the operator can issue a range extension command so that the engine 431 drives the generator 432 to generate electricity, the first motor 201 drives the working drive shaft 400 and the second motor 301 drives the axle drive shaft 100. Moreover, the speed of the engine 431 is decoupled from the working speed and the travel speed, and the engine 431 always works at the high efficiency point to improve fuel economy.

[0041] In one embodiment of this utility model, the axle drive shaft 100 includes a front axle section 110 and a rear axle section 120 connected by a third clutch device 130. The front axle section 110 is connected to the front axle assembly 101, and the rear axle section 120 is connected to the rear axle assembly 102. The axle gear set 140 includes an axle drive gear 141 mounted on a transfer drive shaft 500 and an axle driven gear 142 mounted on the rear axle section 120. The third clutch device 130 is configured as a four-wheel drive clutch and can switch between engaging only with the rear axle section 120 and engaging with both axle sections. That is, by adding the third clutch device 130, agricultural machinery can switch between two-wheel drive and four-wheel drive. In addition, the axle gear set 140 may also include two gears mounted on the axle drive shaft 100 that mesh with the third driven gear 820 and the fourth driven gear 920, respectively.

[0042] like Figure 2 As shown, in one embodiment of this utility model, the first motor shaft 200 and the second motor shaft 300 are arranged parallel to each other at a first height, the working transmission shaft 400 is located at a second height lower than the first height and between the first motor shaft 200 and the second motor shaft 300, and the axle drive shaft 100 is located at a third height lower than the second height. On the one hand, this facilitates the meshing transmission arrangement between the various gear sets, and on the other hand, it greatly saves space for the overall vehicle layout. Specifically, the working transmission shaft 400 and the axle drive shaft 100 can be centrally arranged on the frame, with the axle drive shaft 100 located directly below the working transmission shaft 400.

[0043] In one embodiment of this utility model, a first gear shifting device is provided on the first side of the axle gear set 140, and a second gear shifting device is provided on the second side of the axle gear set 140. This allows the axle gear set 140 to separate the gear sets on the first motor shaft 200 and the second motor shaft 300, such that the axle gear set 140 is positioned in the middle of the axle drive shaft 100, with the gear sets on the first motor shaft 200 and the second motor shaft 300 located on either side of the axle gear set 140, and the second gear set 700 positioned between the first gear set 600 and the axle gear set 140.

[0044] Specifically, the control device includes a central controller, a first motor controller, a second motor controller, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a rectifier. The central controller is configured as follows: (1) It is connected to the first motor controller and the second motor controller respectively, so as to control the first motor 201 through the first motor controller and the second motor 301 through the second motor controller; (2) The first solenoid valve, the second solenoid valve and the third solenoid valve are respectively connected to the signal to control the pumping of hydraulic oil through the solenoid valve. The hydraulic oil mainly goes to the clutch device. The three solenoid valves are set to correspond to the three clutch devices to realize the switching of engagement and disengagement. (3) They are respectively connected to the first engagement device 210 and the second engagement device 510 via signal connection; (4) Connect to the rectifier signal and control the rectifier to convert the electrical energy of the generator 432 and transmit it to the battery for storage when the engine 431 drives the generator 432 to generate electricity.

[0045] In addition, a solenoid valve for controlling the lubricating oil can be added. When the controller receives a lubrication signal, the lubrication process can be controlled smoothly by controlling the solenoid valve.

[0046] Understandably, the dual-motor drive control system can issue relevant commands by setting buttons. The dual-motor drive control system provided by this utility model can be equipped with nine modes: (1) Mode 1: When a single motor travel command is received and it is in low speed gear (single motor low speed travel command), the first clutch device 440 is disengaged, the second clutch device 450 is disengaged, the third clutch device 130 is engaged (either two-wheel drive or four-wheel drive is possible), the first engagement device 210 is disengaged, the second engagement device 510 is selected to engage with the third passive gear 820 of the third gear set 800, and the second motor 301 is controlled to drive the second motor shaft 300 to rotate, so as to drive the axle drive shaft 100 to rotate. The power transmission path is: second motor 301 - second motor shaft 300 - third gear set 800 - second engagement device 510 - transfer drive shaft 500 - axle gear set 140 - axle drive shaft 100. At this time, the agricultural machinery can perform medium traction, rotary tillage and sowing operations.

[0047] (2) Mode 2: When a single motor travel command is received and it is in high speed gear (single motor high speed travel command), the first clutch device 440 is disengaged, the second clutch device 450 is disengaged, the third clutch device 130 is engaged (either two-wheel drive or four-wheel drive is possible), the first engagement device 210 is disengaged, the second engagement device 510 is selected to engage with the fourth passive gear 920 of the fourth gear set 900, and the second motor 301 is controlled to drive the second motor shaft 300 to rotate, so as to drive the axle drive shaft 100 to rotate. The power transmission path is: second motor 301 - second motor shaft 300 - fourth gear set 900 - second engagement device 510 - transfer drive shaft 500 - axle gear set 140 - axle drive shaft 100. At this time, high speed travel and transportation transfer of agricultural machinery can be realized.

[0048] (3) Mode 3: When a single motor travel command is received and the second motor 301 fails, the first clutch device 440 is disengaged, the second clutch device 450 is disengaged, the third clutch device 130 is engaged (either two-wheel drive or four-wheel drive is acceptable), the second engagement device 510 is disengaged, the first engagement device 210 is engaged with the second drive gear 710 of the second gear set 700, and the first motor 201 is controlled to drive the first motor shaft 200 to rotate, thereby driving the axle drive shaft 100 to rotate. The power transmission path is: first motor 201 - first motor shaft 200 - first engagement device 210 - second gear set 700 - transfer drive shaft 500 - axle gear set 140 - axle drive shaft 100. This mode can realize medium traction, rotary tillage and sowing operations of agricultural machinery.

[0049] (4) Mode 4: Upon receiving a dual-motor driving command, the first clutch 440 is disengaged, the second clutch 450 is disengaged, and the third clutch 130 is engaged (either two-wheel drive or four-wheel drive is possible). The first engagement device 210 engages with the second driving gear 710 of the second gear set 700, and the second engagement device 510 engages with the third driven gear 820 or the fourth driven gear 920. The first motor 201 and the second motor 301 are controlled to drive the corresponding motor shafts to rotate, so that torque coupling can be achieved on the transfer drive shaft 500, and the axle drive shaft 100 can be driven. Rotation reduces the power requirement of a single motor. The first power transmission path is: first motor 201 - first motor shaft 200 - first coupling device 210 - second gear set 700 - transfer drive shaft 500 - axle gear set 140 - axle drive shaft 100; the second power transmission path is: second motor 301 - second motor shaft 300 - third gear set 800 / fourth gear set 900 - second coupling device 510 - transfer drive shaft 500 - axle gear set 140 - axle drive shaft 100. This enables agricultural machinery to get out of trouble, perform heavy-load traction, and plow in complex terrain.

[0050] (5) Mode 5: Upon receiving a pure electric operation command, control the first clutch device 440 to engage, the second clutch device 450 to disengage, and the third clutch device 130 to engage (either two-wheel drive or four-wheel drive is acceptable). The first engagement device 210 selects to engage with the first driving gear 610 of the first gear set 600, and the second engagement device 510 selects to engage with the third driven gear 820 or the fourth driven gear 920. Control the first motor 201 and the second motor 301 to drive their respective motor shafts to rotate, so that the first motor 201 drives the working transmission shaft 400 to rotate, responsible for the power output of the working device 401, and the second motor 301 drives the axle drive shaft. The 100-degree rotation is responsible for driving the vehicle. Walking and working are independently controlled. The first power transmission path is: first motor 201 - first motor shaft 200 - first engagement device 210 - first gear set 600 - second shaft section 420 of working transmission shaft 400 - first clutch device 440 - first shaft section 410 of working transmission shaft 400; the second power transmission path is: second motor 301 - second motor shaft 300 - third gear set 800 / fourth gear set 900 - second engagement device 510 - adapter transmission shaft 500 - axle gear set 140 - axle drive shaft 100. This can meet the complex operation requirements of agricultural machinery such as rotary tillage, sowing, ditching and baling.

[0051] (6) Mode Six: Upon receiving the first hybrid operation command, control the first clutch device 440 to engage, the second clutch device 450 to engage, and the third clutch device 130 to engage (either two-wheel drive or four-wheel drive is acceptable). Control the first engagement device 210 to engage with the second driving gear 710 of the second gear set 700 and / or the second engagement device 510 to engage with the third driven gear 820 / fourth driven gear 920. Control the start engine 431, control the first motor 201 and / or the second motor 301 to drive the corresponding motor shafts to rotate, so that the engine 431 drives the working transmission shaft 400 to rotate, which is responsible for the power output of the working device 401. It can also supply power to the power supply battery through the generator 432. The first motor 201 and / or the second motor 301 drive the axle drive shaft 100 to rotate, which is responsible for the driving. The power transmission path is: The power transmission path is as follows: Engine 431 - Third shaft section 430 - Second clutch device 450 - Second shaft section 420 - First clutch device 440 - First shaft section 410; Power transmission path two: Engine 431 - Generator 432; Power transmission path three: First motor 201 - First motor shaft 200 - First engagement device 210 - Second gear set 700 - Transfer drive shaft 500 - Axle gear set 140 - Axle drive shaft 100; Power transmission path four is: Second motor 301 - Second motor shaft 300 - Third gear set 800 / Fourth gear set 900 - Second engagement device 510 - Transfer drive shaft 500 - Axle gear set 140 - Axle drive shaft 100. It should be noted that power transmission paths three and four can exist, or both can exist. In this case, it can meet the needs of agricultural machinery for complex operations such as rotary tillage, sowing, ditching and baling in complex and harsh areas.

[0052] (7) Mode 7: Upon receiving a range extension operation command, control the first clutch device 440 to engage, the second clutch device 450 to disengage, and the third clutch device 130 to engage (either two-wheel drive or four-wheel drive is acceptable). Control the first engagement device 210 to engage with the first driving gear 610 of the first gear set 600, and the second engagement device 510 to engage with the third driven gear 820 or the fourth driven gear 920. Control the start engine 431, and control the first motor 201 and the second motor 301 to drive the corresponding motor shafts to rotate, so that the engine 431 only drives the generator 432 to generate electricity. Its speed is decoupled from the working speed and the walking speed. The engine 431 always works at the high efficiency point to improve fuel economy. The first motor 201 drives the working transmission shaft 400 to rotate. The power output of the working device 401 is controlled by the second motor 301, which drives the axle drive shaft 100 to rotate, responsible for driving the vehicle. The first power transmission path is: engine 431 - generator 432; the second power transmission path is: first motor 201 - first motor shaft 200 - first engagement device 210 - first gear set 600 - second shaft section 420 of working transmission shaft 400 - first clutch device 440 - first shaft section 410 of working transmission shaft 400; the third power transmission path is: second motor 301 - second motor shaft 300 - third gear set 800 / fourth gear set 900 - second engagement device 510 - adapter drive shaft 500 - axle gear set 140 - axle drive shaft 100. This can meet the complex operation requirements of agricultural machinery such as rotary tillage, sowing, ditching and baling.

[0053] (8) Mode 8: Upon receiving the second hybrid operation command, control the first clutch device 440 to engage, the second clutch device 450 to engage, and the third clutch device 130 to engage (either two-wheel drive or four-wheel drive is acceptable). Control the first engagement device 210 to engage with the first driving gear 610 of the first gear set 600, and the second engagement device 510 to engage with the third driven gear 820 or the fourth driven gear 920. Control the start engine 431, control the first motor 201 and the second motor 301 to drive the corresponding motor shafts to rotate, so that the engine 431 and the first motor 201 drive the working transmission shaft 400 to rotate, which is responsible for the power output of the working device 401. It can also supply power to the power supply battery through the generator 432, and the second motor 301 drives the axle drive shaft 100 to rotate, which is responsible for the driving and power transmission. Power transmission path one is: engine 431 - third shaft section 430 - second clutch device 450 - second shaft section 420 - first clutch device 440 - first shaft section 410; power transmission path two is: engine 431 - generator 432; power transmission path three is: first motor 201 - first motor shaft 200 - first engagement device 210 - first gear set 600 - second shaft section 420 of working drive shaft 400 - first clutch device 440 - first shaft section 410 of working drive shaft 400; power transmission path four is: second motor 301 - second motor shaft 300 - third gear set 800 / fourth gear set 900 - second engagement device 510 - adapter drive shaft 500 - axle gear set 140 - axle drive shaft 100. This can meet the scenario where the working drive shaft 400 needs high torque output, such as deep tillage and land reclamation operations.

[0054] (9) Mode 9: When a reverse gear command is received, the power transmission path can be the same as one of Modes 1 to 4, only the steering is reversed, so as to realize the reverse driving of agricultural machinery.

[0055] It should be noted that the present invention shows only the preferred embodiment, and there are other alternative embodiments: 1. In this solution, the transfer drive shaft and the output shaft only have one set of gears meshing. Increasing the number of meshing gears or changing their positions should be considered as an alternative solution.

[0056] 2. In this scheme, the power is directly transmitted to the output shaft via the transfer drive shaft. Setting up a two-stage reduction mechanism should be considered an alternative solution.

[0057] 3. The device in this scheme does not have an idler wheel. Increasing the number of idler wheels should be considered as an alternative.

[0058] 4. In this scheme, the transfer drive shaft is connected to the rear axle device. Replacing the positions of the front axle device and the rear axle device should be considered as an alternative scheme.

[0059] 5. In this scheme, the transfer drive shaft and the output shaft device are in the same horizontal position. Changing the direction of the arrangement should be regarded as the same scheme.

[0060] 6. The gear shifting device in this solution uses a gear sleeve. If a synchronizer, sliding sleeve, or sliding gear is used, it should be considered an alternative solution.

[0061] 7. In this scheme, the front axle and the rear axle are connected to the same shaft. Connecting the front axle and the rear axle to different shafts, i.e. changing from constant speed to non-constant speed, should be considered an alternative scheme.

[0062] 8. This solution is equipped with multiple clutch devices. Changing the number, structure and type of clutches, as well as adjusting their position and direction, should be considered as an alternative solution.

[0063] 9. In this scheme, the third and fourth gear sets first transmit power to the transfer drive shaft, and then transmit it to the output shaft through the axle gear set. Therefore, setting two gears on the output shaft that mesh with the third and fourth driven gears respectively should be considered as an alternative scheme.

[0064] 10. In this scheme, the second coupling device is set on the transfer drive shaft. Setting it on the second motor shaft should be regarded as an alternative.

[0065] 11. This plan is mainly for agricultural machinery; vehicles with the same structure should be considered as alternatives.

[0066] 12. Any changes to the arrangement of the axes in this plan shall be considered as equivalent to the original plan.

[0067] 13. In this scheme, the PTO is directly driven by the motor and continuously variable transmission. Adding multiple gear sets to the PTO to make it multi-gear should be regarded as an alternative scheme.

[0068] 14. This solution does not include brakes. Adding the number of brakes at any location, using wet multi-disc brakes or dry brakes should be considered as alternative solutions.

[0069] 15. The motors used in this scheme can be of the same speed or different speeds. Changing the motor structure and type should be considered as an alternative scheme.

[0070] Therefore, the dual-motor drive control system provided by this utility model has the following advantages: 1. It eliminates the need for planetary gear mechanisms and employs dual motors arranged side-by-side, resulting in a compact, simple, and highly reliable structure.

[0071] 2. The switching between single-motor and dual-motor operation can be achieved through the gear shifting device to meet the operation requirements of different working conditions. It has the advantages of high motor utilization, multiple gears, high transmission efficiency, and low energy consumption.

[0072] 3. The motor can directly drive the working transmission shaft, and the output PTO stepless shift is realized through mechanical structure.

[0073] 4. In the coupled gear position, you can also switch between low speed and high speed gears to improve traction and increase comfort.

[0074] 5. The coexistence of pure electric and hybrid drive greatly enhances the driving range and all-weather operation capability of agricultural machinery.

[0075] 6. The first and second motors are coupled to control the movement, which can reduce the power requirement of a single motor and greatly increase the traction horsepower.

[0076] 7. The first motor and the engine are coupled to drive the working transmission shaft, which can reduce the power requirement of the first motor (working motor).

[0077] Furthermore, a dual-motor drive control method is also provided, wherein the dual-motor drive control method is applied to the dual-motor drive control system described above, and includes: Upon receiving a single motor travel command, the first clutch device 440 is disengaged and the second gear set 700 and the second shift switching device are selected to switch to the power transmission state. Upon receiving a dual-motor travel command, the first clutch device 440 is disengaged and the second gear set 700 and the second gear shifting device are both switched to power transmission mode. Upon receiving a pure electric operation command, the first clutch device 440 is engaged and the first gear set 600 and the second gear shifting device are switched to power transmission mode.

[0078] Understandably, when the dual-motor drive control system is configured for pure electric drive, there are single-motor independent driving mode under single-motor driving command, dual-motor coupled driving mode under dual-motor driving command, and driving mode where the first motor 201 drives the second motor 301 for driving under pure electric operation command, in order to adapt to the needs of different operation scenarios.

[0079] Specifically, in scenarios involving transportation and relocation or low-power walking and traction, the operator can issue a single-motor walking command so that the first motor 201 or the second motor 301 can independently drive the axle drive shaft 100; in complex terrain or when high-power walking and getting out of trouble, heavy-load traction, or walking and plowing are required, the operator can issue a dual-motor walking command so that the first motor 201 and the second motor 301 can jointly drive the axle drive shaft 100; when low-power rotary tillage, sowing, ditching, or baling operations are required, the operator can issue a pure electric operation command so that the first motor 201 drives the work transmission shaft 400 and the second motor 301 drives the axle drive shaft 100, allowing for simultaneous walking and operation.

[0080] In one implementation, upon receiving a single motor travel command, controlling the first clutch 440 to disengage and selecting one of the second gear set 700 and the second shift switch to switch to the power transmission state includes: Upon receiving a single motor travel command and confirming that the second motor 301 is operating normally, the first clutch device 440 is disengaged and the second gear shifting device is switched to power transmission mode. Upon receiving a single motor travel command and determining that the second motor 301 is faulty, the first clutch device 440 is disengaged and the first engagement device 210 is controlled to select the second gear set 700 to switch to power transmission state.

[0081] Furthermore, under a single-motor travel command, the second motor 301 is preferentially used as the single-motor drive for the axle drive shaft 100. If the second motor 301 is determined to be faulty, the first motor 201 is activated as the backup drive for the axle drive shaft 100, thereby greatly improving range and reliability. Even further, upon receiving a single-motor travel command, the second motor 301 can be checked to determine if it is faulty. If no fault is found, the second motor 301 is activated, and the second gear shifting device is controlled to switch to power transmission mode. If a fault is found, the first motor 201 is activated, and the first engagement device 210 is controlled to select the second gear set 700 to switch to power transmission mode. It should be noted that the second motor 301 is prioritized for driving the axle drive shaft 100 in order to facilitate speed control of the vehicle speed under the single motor driving command. This is because the first motor shaft 200 is already equipped with the first gear set 600 and the second gear set 700, while the second motor shaft 300 can be equipped with other gear sets in addition to the third gear set 800 to expand the speed control.

[0082] In one embodiment, the working drive shaft 400 further includes a third shaft section 430 connected to the second shaft section 420 via a second clutch device 450. An engine 431 is connected to the end of the third shaft section 430 away from the second shaft section 420. The engine 431 also drives a generator 432 connected to it, which can supply power to the first motor 201 and the second motor 301. The dual-motor drive control method further includes: Upon receiving the first hybrid operation command, the system controls the first clutch device 440 and the second clutch device 450 to engage respectively and selects at least one of the second gear set 700 and the second shift switching device to switch to the power transmission state. Upon receiving the second hybrid operation command, the system controls the first clutch device 440 and the second clutch device 450 to engage respectively, and controls the first gear set 600 and the second gear shifting device to switch to power transmission mode. Upon receiving a range extension command, the system controls the first clutch 440 to engage, the second clutch 450 to disengage, and the first gear set 600 and the second gear shifting device to switch to power transmission mode.

[0083] Furthermore, by adding an engine 431 to the working drive shaft 400 and having the engine 431 drive a generator 432, the dual-motor drive control system provided by this utility model not only has pure electric drive but also hybrid drive, thereby greatly improving the working capacity and range of agricultural machinery, and enabling all-weather operation. Understandably, when the dual-motor drive control system is configured for hybrid drive, there are different modes: engine operation drive and single-motor or dual-motor walking drive under the first hybrid operation command; engine and first motor coupled operation drive and second motor independent walking drive under the second hybrid operation command; and engine 431 only drives the generator 432 to generate electricity under the range-extended operation command, with the first motor operating and the second motor walking independently, to further adapt to different operating scenarios.

[0084] Furthermore, when facing complex and challenging terrains requiring high power for rotary tillage, sowing, ditching, or baling operations, the operator can issue a first hybrid operation command, causing the engine 431 to drive the working drive shaft 400, and the first motor 201 and / or the second motor 301 to drive the axle drive shaft 100. Simultaneously, the engine 431 can also supply power to the batteries of the first motor 201 and the second motor 301 via the generator 432. In operation scenarios where the working drive shaft 400 requires high torque output, such as deep tillage, the operator can issue a second hybrid operation command, causing the engine 431 and the first motor 201 to drive the axle drive shaft 100. The first motor 431 drives the working drive shaft 400, and the second motor 301 independently drives the axle drive shaft 100. At the same time, the engine 431 can also supply power to the power supply batteries of the first motor 201 and the second motor 301 through the generator 432. When the power supply battery is insufficient, the operator can issue a range extension command so that the engine 431 drives the generator 432 to generate electricity, the first motor 201 drives the working drive shaft 400 and the second motor 301 drives the axle drive shaft 100. Moreover, the speed of the engine 431 is decoupled from the working speed and the travel speed, and the engine 431 always works at the high efficiency point to improve fuel economy.

[0085] Specifically, the dual-motor drive control method includes: Upon receiving a low-speed travel command from a single motor, the system controls the first clutch 440 to disengage, the second clutch 450 to disengage, the third clutch 130 to engage (either two-wheel drive or four-wheel drive), the first engagement device 210 to disengage, the second engagement device 510 to engage with the third passive gear 820 of the third gear set 800, and controls the second motor 301 to drive the second motor shaft 300 to rotate. Upon receiving a high-speed driving command from a single motor, the system controls the first clutch device 440 to disengage, the second clutch device 450 to disengage, the third clutch device 130 to engage (either two-wheel drive or four-wheel drive), the first engagement device 210 to disengage, the second engagement device 510 to engage with the fourth passive gear 920 of the fourth gear set 900, and controls the second motor 301 to drive the second motor shaft 300 to rotate. When a single motor travel command is received and the second motor 301 malfunctions, the system controls the first clutch device 440 to disengage, the second clutch device 450 to disengage, the third clutch device 130 to engage (either two-wheel drive or four-wheel drive is acceptable), the second engagement device 510 to disengage, the first engagement device 210 to engage with the second drive gear 710 of the second gear set 700, and controls the first motor 201 to drive the first motor shaft 200 to rotate. Upon receiving a dual-motor driving command, the system controls the first clutch 440 to disengage, the second clutch 450 to disengage, and the third clutch 130 to engage (either two-wheel drive or four-wheel drive is possible). The first engagement device 210 selects to engage with the second drive gear 710 of the second gear set 700, and the second engagement device 510 selects to engage with the third driven gear 820 or the fourth driven gear 920. The system also controls the first motor 201 and the second motor 301 to drive the corresponding motor shafts to rotate. Upon receiving a pure electric operation command, the system controls the first clutch device 440 to engage, the second clutch device 450 to disengage, the third clutch device 130 to engage (either two-wheel drive or four-wheel drive), the first engagement device 210 to engage with the first drive gear 610 of the first gear set 600, the second engagement device 510 to engage with the third driven gear 820 or the fourth driven gear 920, and controls the first motor 201 and the second motor 301 to drive the corresponding motor shafts to rotate respectively. Upon receiving the first hybrid operation command, the system controls the engagement of the first clutch device 440, the second clutch device 450, and the third clutch device 130 (either two-wheel drive or four-wheel drive is acceptable), controls the first engagement device 210 to engage with the second drive gear 710 of the second gear set 700 and / or the second engagement device 510 to engage with the third driven gear 820 / fourth driven gear 920, and controls the start engine 431, and controls the first motor 201 and / or the second motor 301 to drive the corresponding motor shafts to rotate respectively. Upon receiving a range extension command, the system controls the first clutch 440 to engage, the second clutch 450 to disengage, and the third clutch 130 to engage (either two-wheel drive or four-wheel drive is acceptable). The system also controls the first engagement device 210 to engage with the first drive gear 610 of the first gear set 600, the second engagement device 510 to engage with the third driven gear 820 or the fourth driven gear 920, and controls the engine 431 to start and the first motor 201 and the second motor 301 to drive their respective motor shafts to rotate. Upon receiving the second hybrid operation command, the system controls the engagement of the first clutch device 440, the second clutch device 450, and the third clutch device 130 (either two-wheel drive or four-wheel drive is acceptable). The system also controls the first engagement device 210 to engage with the first drive gear 610 of the first gear set 600, the second engagement device 510 to engage with the third driven gear 820 or the fourth driven gear 920, and controls the start engine 431 to drive the corresponding motor shafts of the first motor 201 and the second motor 301 to rotate respectively.

[0086] Furthermore, this utility model also provides an agricultural machine, which includes the dual-motor drive control system described above. Since the agricultural machine adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. Specifically, the agricultural machine includes, but is not limited to, a tractor.

[0087] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0090] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dual-motor drive control system, characterized in that, include: Axle drive shaft (100) is connected to the axle assembly; The first motor shaft (200) is connected to the first motor (201); The second motor shaft (300) is connected to the second motor (301); The working drive shaft (400) includes a first shaft segment (410) connected to the working device (401) and a second shaft segment (420) connected to the first shaft segment (410) via a first clutch device (440); The adapter drive shaft (500) is loosely fitted onto the second shaft section (420); The axle gear set (140) is provided between the transfer drive shaft (500) and the axle drive shaft (100) for meshing transmission. A first gear shifting device is provided on the first motor shaft (200). The first gear shifting device is used to select one of the working drive shaft (400) and the transfer drive shaft (500) for power transmission. A second gear shifting device capable of switching different speed ratios is provided between the second motor shaft (300) and the transfer drive shaft (500).

2. The dual-motor drive control system according to claim 1, characterized in that, The first gear shifting device includes a first gear set (600), a second gear set (700), and a first engagement device (210). The first gear set (600) is provided for meshing transmission between the first motor shaft (200) and the working transmission shaft (400), and the second gear set (700) is provided for meshing transmission between the first motor shaft (200) and the transfer transmission shaft (500). The first engagement device (210) is located on the first motor shaft (200) and can switch between being disconnected from both gear sets and being engaged with one of the gear sets.

3. The dual-motor drive control system according to claim 2, characterized in that, The first gear set (600) includes a first driving gear (610) disposed on the first motor shaft (200) and a first driven gear (620) disposed on the second shaft section (420) and meshing with the first driving gear (610). The second gear set (700) includes a second driving gear (710) disposed on the first motor shaft (200) and a second driven gear (720) disposed on the adapter transmission shaft (500) and meshing with the second driving gear (710). The first engagement device (210) is disposed on the first motor shaft (200) and located between the first driving gear (610) and the second driving gear (710), and can switch between being disconnected from both driving gears and being engaged with one of the driving gears.

4. The dual-motor drive control system according to claim 1, characterized in that, The second gear shifting device includes a third gear set (800), a fourth gear set (900), and a second engagement device (510). The third gear set (800) and the fourth gear set (900) are respectively staggered between the second motor shaft (300) and the transfer drive shaft (500) and are both configured for meshing transmission. The second engagement device (510) is located between the third gear set (800) and the fourth gear set (900) and can switch between being disconnected from both gear sets and being engaged with one of the gear sets.

5. The dual-motor drive control system according to claim 4, characterized in that, The third gear set (800) includes a third driving gear (810) disposed on the second motor shaft (300) and a third driven gear (820) disposed on the adapter transmission shaft (500) and meshing with the third driving gear (810). The fourth gear set (900) includes a fourth driving gear (910) disposed on the second motor shaft (300) and a fourth driven gear (920) disposed on the adapter transmission shaft (500) and meshing with the fourth driving gear (910). And / or, the third driven gear (820) of the third gear set (800) and the fourth driven gear (920) of the fourth gear set (900) are both loosely fitted on the adapter drive shaft (500), and the second engagement device (510) is provided on the adapter drive shaft (500) and located between the third driven gear (820) and the fourth driven gear (920).

6. The dual-motor drive control system according to claim 1, characterized in that, The working drive shaft (400) also includes a third shaft section (430) connected to the second shaft section (420) via a second clutch device (450), and an engine (431) is connected to the end of the third shaft section (430) away from the second shaft section (420).

7. The dual-motor drive control system according to claim 6, characterized in that, The engine (431) also drives a generator (432) connected to supply power to the first motor (201) and the second motor (301).

8. The dual-motor drive control system according to any one of claims 1 to 7, characterized in that, The axle drive shaft (100) includes a front axle section (110) and a rear axle section (120) connected by a third clutch device (130). The axle gear set (140) includes an axle drive gear (141) disposed on the transfer drive shaft (500) and an axle driven gear (142) disposed on the rear axle section (120). The third clutch device (130) is configured as a four-wheel drive clutch and is capable of switching between engaging only with the rear axle section (120) and engaging with both axle sections.

9. The dual-motor drive control system according to any one of claims 1 to 7, characterized in that, The first motor shaft (200) and the second motor shaft (300) are arranged in parallel at a distance at a first height, the working transmission shaft (400) is located at a second height lower than the first height and between the first motor shaft (200) and the second motor shaft (300), and the axle drive shaft (100) is located at a third height lower than the second height; And / or, the first gear shifting device is provided on the first side of the axle gear set (140), and the second gear shifting device is provided on the second side of the axle gear set (140).

10. An agricultural machine, characterized in that, The agricultural machinery includes a dual-motor drive control system according to any one of claims 1 to 9.

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