Harvester transition efficiency improving system

Abstract

The invention provides a harvester transition efficiency improving system, and the system comprises a working mode selection switch which is used for responding to the selection operation of a user for the working mode selection switch, determining a working mode, and transmitting the working mode to a vehicle control unit; the gear switch is used for sending a gear switch signal to the vehicle control unit; the walking handle is used for outputting a first voltage type analog quantity signal to the vehicle control unit according to the first position of the walking handle; the steering handle is used for outputting a second voltage type analog quantity signal to the vehicle control unit according to the second position of the steering handle; the vehicle control unit is used for outputting walking pump control current and walking motor control current based on the working mode selection switch signal, the gear switch signal, the first voltage type analog quantity signal and the second voltage type analog quantity signal; the walking pump is used for controlling current adjustment based on the walking pump; the walking motor is used for adjusting the displacement of the walking motor based on the walking motor control current so as to adjust the driving force and the running speed of the harvester.

Description

Technical Field

[0001] The present application relates to the technical field of harvesters, and in particular to a system for improving the efficiency of harvester transfer. Background Art

[0002] When the harvester is working in the field, in order to ensure the best working quality, the operator generally operates at a lower speed, so as to ensure that the power of the vehicle is more distributed on the working parts, ensure that the crops are fed at the best feeding amount, and perform threshing and cleaning at the rated working speed to achieve the best working effect. Therefore, when the harvester is working, it requires more slow speed, sufficient power and adaptive speed. After the work is completed, the user needs to transfer in the shortest time and reach the next work site as soon as possible, so as to reduce the idle time of the harvester and improve the overall working efficiency of the harvester, which is in contradiction with the slow speed during the operation.

[0003] At present, in order to improve the overall operating efficiency of the harvester, the requirements of the operating conditions or the transfer of the harvester can be considered during the design process of the harvester.

[0004] However, if only the requirements of the operating conditions are considered, the harvester's transfer time will be prolonged and the transfer efficiency will be low, which will greatly reduce the overall operating efficiency of the harvester. If only the transfer situation is considered, the operating quality will be greatly reduced, resulting in increased losses of the harvester and reduced cleanliness. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a harvester transfer efficiency improvement system, which can output a travel pump control current and a travel motor control current through a working mode selection switch signal, a gear switch signal, a first voltage type analog signal and a second voltage type analog signal to adjust the travel pump displacement and the travel motor displacement, thereby adjusting the driving force and the driving speed of the harvester, solving the contradiction between the operating conditions and the transfer conditions of the harvester, and achieving a balance between the operating conditions and the transfer conditions, so that the harvester can operate at the optimal driving speed and the best driving force during operation, thereby improving the operating effect of the harvester, that is, improving the cleanliness of the harvester and reducing the loss of the harvester, and during the transfer process, it can transfer at the fastest speed, reducing the transfer time and improving the transfer efficiency, thereby greatly improving the overall operating efficiency of the harvester.

[0006] In a first aspect, an embodiment of the present application provides a harvester transfer efficiency improvement system, the system comprising a working mode selection switch, a gear switch, a walking handle, a steering handle, a vehicle controller, a walking pump, and a walking motor; the system comprises:

[0007] The working mode selection switch is used to determine the corresponding working mode in response to the user's selection operation on the working mode selection switch, and send the corresponding working mode selection switch signal to the vehicle controller; wherein the working mode includes an operation mode and a transition mode;

[0008] The gear switch is used to send a gear switch signal to the vehicle controller to adjust the speed gear of the harvester;

[0009] The walking handle is used to output a corresponding first voltage type analog signal to the vehicle controller according to the first position of the walking handle; wherein different first positions of the walking handle correspond to different first voltage type analog signals;

[0010] The steering handle is used to output a corresponding second voltage type analog signal to the vehicle controller according to the second position of the steering handle; wherein different second positions of the steering handle correspond to different second voltage type analog signals;

[0011] The vehicle controller is used to output a travel pump control current for the travel pump and a travel motor control current for the travel motor based on the working mode selection switch signal, the gear switch signal, the first voltage type analog signal and the second voltage type analog signal;

[0012] The travel pump is used to receive the travel pump control current and adjust its own travel pump displacement based on the travel pump control current;

[0013] The travel motor is used to receive the travel motor control current and adjust its own travel motor displacement in a preset adjustment mode based on the travel motor control current to adjust the driving force and travel speed of the harvester.

[0014] In a possible implementation manner, the output is a travel pump control current for the travel pump:

[0015] Determine a first position of the walking handle based on the first voltage type analog signal;

[0016] In response to the first position being the middle position, outputting a travel pump control current for the travel pump as 0, so as to make the harvester stationary;

[0017] In response to the first position being forward or backward, a current percentage for the travel pump control current is calculated based on the first voltage-type analog signal; wherein the current percentage includes a current forward percentage and a current backward percentage;

[0018] A travel pump control current output to the travel pump is determined based on the current percentage.

[0019] In a possible implementation manner, the calculating the current percentage for the travel pump control current based on the first voltage-type analog signal includes:

[0020] Calculate the difference between the real-time first voltage-type analog signal when the first position is forward and the first voltage-type analog signal when the first position is in the middle position, and calculate the forward percentage of the harvester based on the difference;

[0021] Calculate the difference between the first voltage-type analog signal when the first position is the middle position and the real-time first voltage-type analog signal when the first position is the backward position, and calculate the backward percentage of the harvester based on the difference.

[0022] In a possible implementation manner, the travel pump is used to output its own travel pump real-time current and travel pump displacement to the vehicle controller; wherein the range of the travel pump real-time current is determined by the dead zone current and the maximum current.

[0023] In a possible implementation manner, determining the travel pump control current output to the travel pump based on the current percentage includes:

[0024] Obtaining the real-time current and displacement of the travel pump output by the travel pump;

[0025] Calculate the real-time current value output to the travel pump based on the current percentage, the dead zone current of the travel pump, the maximum current, and the displacement of the travel pump;

[0026] A travel pump control current output to the travel pump is adjusted based on the real-time current value.

[0027] In a possible implementation manner, the travel motor is used to output its own travel motor real-time current and travel motor displacement to the vehicle controller.

[0028] In a possible implementation manner, the outputting a travel motor control current for the travel motor includes:

[0029] Based on the relationship between the real-time current of the travel motor and the displacement of the travel motor, and the gear switch signal, the travel motor control current output to the travel motor is determined.

[0030] In a possible implementation, the vehicle controller is also used to calculate the left turn percentage and the right turn percentage of the harvester according to the second voltage-type analog signal, and adjust the steering of the harvester based on the left turn percentage and the right turn percentage.

[0031] In a possible implementation manner, the system further includes a display screen; the display screen is connected to the vehicle controller CAN;

[0032] The vehicle controller is used to send the driving speed of the harvester to the display screen;

[0033] The display screen is used to receive the driving speed and display a high-speed indication when the driving speed is within a preset high-speed range, and display a low-speed driving when the driving speed is within a preset low-speed range.

[0034] In a possible implementation manner, the vehicle controller is further configured to output a travel motor control current of the travel motor at a preset current change frequency; wherein the current change frequency is determined by the acceleration set by the user.

[0035] The embodiment of the present application provides a system for improving the efficiency of harvester transfer, which includes: a working mode selection switch, a gear switch, a walking handle, a steering handle, a vehicle controller, a walking pump, and a walking motor; the working mode selection switch is used to respond to the user's selection operation on the working mode selection switch, determine the corresponding working mode, and send the corresponding working mode selection switch signal to the vehicle controller; the gear switch is used to send the gear switch signal to the vehicle controller to adjust the speed gear of the harvester; the walking handle is used to output a corresponding first voltage type analog signal to the vehicle controller according to the first position of the walking handle; the steering handle is used to A second voltage-type analog signal corresponding to the second position of the steering handle is output to the vehicle controller; the vehicle controller is used to output a travel pump control current for the travel pump and a travel motor control current for the travel motor based on the working mode selection switch signal, the gear switch signal, the first voltage-type analog signal and the second voltage-type analog signal; the travel pump is used to receive the travel pump control current and adjust its own travel pump displacement based on the travel pump control current; the travel motor is used to receive the travel motor control current and adjust its own travel motor displacement based on the travel motor control current in a preset adjustment mode to adjust the driving force and travel speed of the harvester. The present application outputs the travel pump control current and the travel motor control current to adjust the travel pump displacement and the travel motor displacement through the working mode selection switch signal, the gear switch signal, the first voltage type analog signal and the second voltage type analog signal, thereby adjusting the driving force and the driving speed of the harvester, solving the contradiction between the working condition and the transfer condition of the harvester, and achieving a balance between the working condition and the transfer condition, so that the harvester can operate at the optimal driving speed and the best driving force during operation, thereby improving the operating effect of the harvester, that is, improving the cleanliness of the harvester and reducing the loss of the harvester, and during the transfer process, it can transfer at the fastest speed, reducing the transfer time and improving the transfer efficiency, thereby greatly improving the overall operating efficiency of the harvester.

[0036] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 is a flow chart of a system for improving harvester transfer efficiency according to one embodiment of the present application;

[0039] Figure 2 It is a schematic diagram of the system composition of the harvester transfer efficiency improvement system. DETAILED DESCRIPTION

[0040] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.

[0041] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0042] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.

[0043] Considering that when the harvester is working in the field, in order to ensure the best working quality, the operator generally operates at a lower speed, so as to ensure that the power of the vehicle is more distributed on the working parts, ensuring that the crops are fed at the best feeding amount, and threshing and cleaning are performed at the rated working speed to achieve the best working effect. Therefore, when the harvester is working, it requires more slow speed, sufficient power and adaptive speed. After the operation is completed, the user needs to transfer in the shortest time and reach the next work site as soon as possible, so as to reduce the idle time of the harvester and improve the overall operating efficiency of the harvester, which is in contradiction with the slow speed during the operation.

[0044] At present, in order to improve the overall operating efficiency of the harvester, the requirements of the operating conditions or the transfer of the harvester can be considered during the design of the harvester. However, if only the requirements of the operating conditions are considered, the transfer time of the harvester will be prolonged and the transfer efficiency will be low, which will greatly reduce the overall operating efficiency of the harvester. If only the transfer situation is considered, the operating quality will be greatly reduced, resulting in increased losses of the harvester and reduced cleanliness.

[0045] To address this problem, the present application provides a harvester transfer efficiency improvement system, which outputs a travel pump control current and a travel motor control current through a working mode selection switch signal, a gear switch signal, a first voltage-type analog signal, and a second voltage-type analog signal to adjust the travel pump displacement and the travel motor displacement, thereby adjusting the driving force and driving speed of the harvester, solving the contradiction between the harvester's operating conditions and the transfer conditions, and achieving a balance between the operating conditions and the transfer conditions, so that the harvester can operate at the optimal driving speed and the best driving force, thereby improving the harvester's operating effect, that is, improving the cleanliness of the harvester and reducing the loss of the harvester, and during the transfer process, it can transfer at the fastest speed, reducing the transfer time and improving the transfer efficiency, thereby greatly improving the overall operating efficiency of the harvester.

[0046] Figure 1 is a flow chart of a system for improving harvester transfer efficiency according to an embodiment of the present application. Figure 1 As shown, the harvester transfer efficiency improvement system 100 of the embodiment of the present application includes a working mode selection switch 1, a gear switch 2, a travel handle 3, a steering handle 4, a vehicle controller 5, a travel pump 6, and a travel motor 7.

[0047] The working mode selection switch 1, the gear switch 2, the travel handle 3, the steering handle 4, the travel pump 6, and the travel motor 7 are electrically connected to the vehicle controller 5, specifically through hard wires. Figure 2 shown.

[0048] The working mode selection switch 1 is used to determine the corresponding working mode in response to the user's selection operation on the working mode selection switch 1, and send the corresponding working mode selection switch signal to the vehicle controller 5. The working mode includes an operation mode and a transition mode (ie, a transfer mode).

[0049] It should be noted that the user can select the desired working mode by pressing the working mode selection switch 1, select the working mode when working, and select the transition mode when changing the site.

[0050] The gear switch 2 is used to send the gear switch signal to the vehicle controller 5 to adjust the speed gear of the harvester. The speed gear includes the first gear, the second gear and the third gear. Specifically, the gear switch 2 refers to the first gear, the second gear and the third gear on the gearbox.

[0051] The travel handle 3 is used to output a corresponding first voltage type analog signal to the vehicle controller according to the first position of the travel handle 3. Different first positions of the travel handle 3 correspond to different first voltage type analog signals.

[0052] It should be noted that the first position of the walking handle 3 includes forward, middle and backward, and the first position represents the real-time position of the walking handle 3. The voltage range of the first voltage-type analog signal can be 0.5V-4.5V. At this time, for example, 2.5V-4.5V can correspond to forward, 0.5V-2V can correspond to backward, and 2V-2.5V can correspond to the middle position.

[0053] Specifically, the travel handle 3 is a handle for controlling the vehicle to move forward and backward. The handle signal is a voltage-type analog signal of 0.5V-4.5V. Different voltages can be output at different handle positions, and different position information is sent to the controller through different voltages.

[0054] The steering handle 4 is used to output a corresponding second voltage type analog signal to the vehicle controller according to the second position of the steering handle 4. Different second positions of the steering handle 4 correspond to different second voltage type analog signals, and the second position represents the real-time position of the steering handle 4; the second position of the steering handle 4 includes left turn and right turn; the voltage range of the second voltage type analog signal can be 0.5V-4.5V.

[0055] Specifically, the steering handle 4 is a handle for controlling the steering of the vehicle. The steering signal can be a voltage-type analog signal of 0.5V-4.5V. Different voltages can be output at different handle positions, and different position information is sent to the controller through different voltages.

[0056] The vehicle controller 5 is used to output a travel pump control current for the travel pump 6 and a travel motor control current for the travel motor 7 based on the working mode selection switch signal, the gear switch signal, the first voltage type analog signal and the second voltage type analog signal.

[0057] It should be noted that the vehicle controller 5 serves as the control unit for the vehicle's movements. It receives signals from the working mode selection switch 1, the gear switch 2, the travel handle 33 voltage and the steering handle 4 voltage, and outputs the control current of the travel pump 6 and the travel motor 7 by processing these signals.

[0058] The travel pump 6 is used to receive the travel pump control current and adjust its travel pump displacement based on the travel pump control current. It should be noted that the travel pump displacement is adjusted by the travel pump control current to ensure smooth acceleration and deceleration of the vehicle.

[0059] The travel motor 7 is used to receive the travel motor control current and adjust its own travel motor displacement in a preset adjustment mode based on the travel motor control current to adjust the driving force and travel speed of the harvester. The adjustment mode can be a two-speed multi-level adjustment.

[0060] It is understandable that the larger the displacement of the travel motor, the greater the driving force and the slower the travel speed; the smaller the displacement of the travel motor, the smaller the driving force and the faster the travel speed. Therefore, the displacement of the travel motor can be adjusted in multiple stages by controlling the current of the travel motor to achieve smooth adjustment of the displacement of the travel motor, so that the vehicle driving force and vehicle speed can be smoothly adjusted.

[0061] The harvester transfer efficiency improvement system provided in the embodiment of the present application includes: a working mode selection switch 1, a gear switch 2, a walking handle 3, a steering handle 4, a vehicle controller 5, a walking pump 6, and a walking motor 7; the working mode selection switch 1 is used to respond to the user's selection operation on the working mode selection switch 1, determine the corresponding working mode, and send the corresponding working mode selection switch signal to the vehicle controller 5; the gear switch 2 is used to send the gear switch signal to the vehicle controller 5 to adjust the speed gear of the harvester; the walking handle 3 is used to output the corresponding first voltage type analog signal to the vehicle controller according to the first position of the walking handle 3; the steering handle 4 , used to output a corresponding second voltage-type analog signal to the vehicle controller according to the second position of the steering handle 4; the vehicle controller 5 is used to output a travel pump control current for the travel pump 6 and a travel motor control current for the travel motor 7 based on the working mode selection switch signal, the gear switch signal, the first voltage-type analog signal and the second voltage-type analog signal; the travel pump 6 is used to receive the travel pump control current and adjust its own travel pump displacement based on the travel pump control current; the travel motor 7 is used to receive the travel motor control current and adjust its own travel motor displacement based on the travel motor control current in a preset adjustment mode to adjust the driving force and travel speed of the harvester. The harvester transfer efficiency improvement system of the present application outputs a travel pump control current and a travel motor control current to adjust the travel pump displacement and the travel motor displacement through a working mode selection switch signal, a gear switch signal, a first voltage-type analog signal and a second voltage-type analog signal, thereby adjusting the driving force and the driving speed of the harvester, solving the contradiction between the operating condition and the transfer condition of the harvester, and achieving a balance between the operating condition and the transfer condition, so that the harvester can operate at the optimal driving speed and the best driving force during operation, thereby improving the operation effect of the harvester, that is, improving the cleanliness of the harvester and reducing the loss of the harvester, and during the transfer process, the transfer can be carried out at the fastest speed, reducing the transfer time and improving the transfer efficiency, thereby greatly improving the overall operation efficiency of the harvester.

[0062] Furthermore, when outputting a travel pump control current for the travel pump 6, the first position of the travel handle 3 is determined based on the first voltage-type analog signal; in response to the first position being a neutral position, the travel pump control current output for the travel pump 6 is 0 to stop the harvester; in response to the first position being forward or backward, the current percentage of the harvester is calculated based on the first voltage-type analog signal; and the travel pump control current output to the travel pump 6 is determined based on the current percentage.

[0063] Among them, the current percentage includes the current forward percentage and the current backward percentage; the current percentage includes the current forward percentage or the current backward percentage; the first position corresponding to the current forward percentage is forward, and the first position corresponding to the current backward percentage is backward.

[0064] Specifically, the walking handle 3 sends a first voltage-type analog signal with different position information to the vehicle controller 5 through different voltages. The vehicle controller 5 calibrates the real-time first position of the walking handle 3 according to the position information corresponding to the first voltage-type analog signal, that is, it is divided into three positions: forward, middle, and backward. According to the real-time position of the handle, when the handle is in the middle position, the output walking pump control current is 0, and the harvester is stationary; when the handle is in the forward state, the current percentage for the walking pump control current is calculated according to the first voltage-type analog signal.

[0065] Optionally, when calculating the current percentage for the travel pump control current based on the first voltage-type analog signal, the difference between the real-time first voltage-type analog signal when the first position is forward and the first voltage-type analog signal when the first position is mid-position is calculated, and the forward percentage of the harvester is calculated based on the difference; the difference between the first voltage-type analog signal when the first position is mid-position and the real-time first voltage-type analog signal when the first position is backward is calculated, and the backward percentage of the harvester is calculated based on the difference.

[0066] Specifically, when the first position of the walking handle 3 is forward, it means that the harvester is going to move forward, so the forward percentage is calculated based on the difference between the real-time voltage signal (that is, the real-time first voltage type analog signal when the current first position is forward) and the median voltage signal (that is, the first voltage type analog signal when the stored first position is the median position) to obtain the forward percentage; when the first position of the walking handle 3 is backward, it means that the harvester is going to move backward, and the backward percentage is calculated based on the difference between the median voltage signal and the real-time voltage signal.

[0067] Furthermore, the travel pump 6 is used to output its own real-time current and displacement of the travel pump 6 to the vehicle controller 5. The range of the real-time current of the travel pump 6 is determined by the dead zone current and the maximum current; the dead zone current represents that the travel pump 6 outputs flow at the minimum opening, and the maximum current represents that the travel pump 6 outputs flow at the maximum opening.

[0068] It should be noted that the walking pump 6 is controlled proportionally, and the real-time current range of the walking pump 6 can be 200mA-640mA. At this time, the dead zone current is 200mA, and the maximum current is 640mA. At 200mA, the walking pump 6 is driven to output flow at the minimum opening, and at 600mA, the walking pump 6 is driven to output flow at the maximum opening.

[0069] Furthermore, when determining the walking pump control current output to the walking pump 6 based on the current percentage, the real-time current of the walking pump 6 and the walking pump displacement output by the walking pump 6 are obtained; based on the current percentage, the dead zone current of the walking pump 6, the maximum current, and the walking pump displacement, the real-time current value output to the walking pump 6 is calculated; and based on the real-time current value, the walking pump control current output to the walking pump 6 is adjusted.

[0070] It should be noted that after calculating the current percentage, the corresponding travel pump control current is output according to the relationship between the real-time current of the travel pump 6 and the displacement of the travel pump. Specifically, according to the first voltage-type analog signal of the travel handle 3, the forward, middle and backward handle positions of the travel handle 3 are calibrated, and then the forward or backward current percentage of the harvester is calculated according to the real-time voltage signal and the middle voltage signal of the handle. According to the forward or backward current percentage, combined with the dead zone current and maximum current of the travel pump 6 and the displacement of the travel pump, the current value of the real-time output travel pump control current is calculated.

[0071] Specifically, the logic of controlling the current output of the travel pump 6 is described as follows: when the travel handle 3 is pushed forward from the neutral position, the vehicle controller 5 outputs a gradually increasing forward drive current according to a set slope, and when the travel handle 3 is pushed to the maximum, the forward current output is maximum; when the travel handle 3 returns to the neutral position from the forward position, the controller outputs a gradually decreasing forward drive current according to a set slope, and when the travel handle 3 returns to the neutral voltage, the forward current output is minimum; when the travel handle 3 is pulled backward from the neutral position, the controller outputs a gradually increasing backward drive current according to a set slope, and when the travel handle 3 is pulled backward to the maximum, the backward current output is maximum; when the handle returns to the neutral position from the reverse position, the controller outputs a gradually decreasing backward drive current according to a set slope, and when the handle returns to the neutral voltage, the backward current output is minimum. It should be noted that the above-mentioned forward or backward drive current is also the travel pump control current.

[0072] Therefore, when the vehicle controller 5 adjusts the control current of the travel pump 6, it controls the output control current of the travel pump 6 according to the position of the travel handle 3, thereby ensuring smooth acceleration and deceleration of the vehicle.

[0073] Furthermore, the travel motor 7 is used to output its own travel motor 7 real-time current and travel motor displacement to the vehicle controller 5 .

[0074] It should be noted that when outputting the travel motor control current for the travel motor 7, the travel motor control current output to the travel motor 7 is determined based on the relationship between the real-time current of the travel motor 7 and the travel motor displacement, and the gear switch signal.

[0075] In simple terms, in combination with the gear switch 2, according to the relationship curve between the travel motor displacement and the real-time current of the travel motor 7, the vehicle controller 5 outputs the corresponding travel motor control current of the travel motor 7, so as to control the motor displacement according to the travel motor control current. It can be added that the travel motor 7 is controlled by current, and the motor displacement is controlled by the travel motor control current. When the harvester needs a greater driving force, the motor displacement is increased by current, so that the maximum driving force can be guaranteed; when the harvester needs a higher driving speed, the motor displacement is reduced by current, so that the motor rotates at a faster speed, driving the vehicle to move at a faster speed.

[0076] Here, a two-speed stepless speed-adjustable travel motor 7 can be selected. At this time, under normal conditions, the travel motor displacement is set to 80 mL per minute. When the harvester needs to move at high speed, the motor displacement is controlled to be adjusted to 63 mL per minute. During the change of the travel motor displacement, the current regulation is stepless, which can achieve a smooth transition of the motor displacement change and avoid a strong sense of frustration caused by rapid changes.

[0077] Therefore, when the vehicle controller 5 adjusts the travel motor 7, it controls the motor displacement by controlling the travel motor current, thereby achieving smooth adjustment of the travel motor displacement, and smoothly adjusting the vehicle driving force and vehicle speed.

[0078] Furthermore, the vehicle controller 5 is also used to calculate the left turn percentage and the right turn percentage of the harvester according to the second voltage type analog signal, and adjust the steering of the harvester based on the left turn percentage and the right turn percentage. It should be noted that the steering handle 4 is a handle for controlling the steering of the vehicle, and different position information is sent to the vehicle controller 5 through different second voltage type analog signals. The vehicle controller 5 determines the percentage of the handle turning left and right according to the second voltage type analog signal.

[0079] Furthermore, the system also includes a display screen. The display screen is connected to the vehicle controller 5CAN, that is, communicates via the CAN bus, for example, Figure 2 shown.

[0080] The vehicle controller 5 is used to send the driving speed of the harvester to the display screen.

[0081] The display screen is used to receive the driving speed and display a high-speed indication when the driving speed is within a preset high-speed range, and display a low-speed driving when the driving speed is within a preset low-speed range. Specifically, the display screen serves as the information display terminal of the entire vehicle. When the vehicle is driving at a high speed, the high-speed indication is displayed on the display screen, and when the vehicle is driving at a low speed, the low-speed driving is displayed on the display screen.

[0082] Furthermore, the vehicle controller 5 is also used to output the travel motor control current of the travel motor 7 at a preset current change frequency. The current change frequency is determined by the acceleration set by the user.

[0083] Specifically, the speed of change of the travel motor control current can be controlled according to the time, i.e., a certain current change frequency, according to user needs. The entire current change process can be set to 0.5s to 2.5s, i.e., it changes every 0.5s to 2.5s, i.e., the current change frequency. The user can set the acceleration according to his or her driving habits, thereby determining the corresponding current change frequency, to reasonably control the acceleration of the harvester, which is in line with the driving habits of more people. It should be noted that the set "ramp" mentioned in the above embodiment is also the current change frequency here.

[0084] Therefore, the current change of the travel motor 7 is controlled to be adjusted according to the set slope, that is, the current change frequency, thereby avoiding sudden changes in the speed of the harvester.

[0085] In general, the specific control logic of this application is as follows:

[0086] a. When it is detected that the travel handle 3 is in the backward state, no matter in the operation mode or the transfer mode, and no matter which gear the gear switch 2 corresponding to the gearbox is in, the travel motor 7 is assumed to be in the high displacement position, so that the harvester maintains a relatively low speed.

[0087] b. When the harvester is moving forward, in the operation mode, no matter which gear the gear switch 2 corresponding to the gearbox is in, the travel motor 7 is set to a high displacement position by default, so that the harvester maintains a relatively low speed.

[0088] c. When the harvester is moving forward, in the field transfer mode, when the gear switch 2 corresponding to the gearbox is in the first gear and the second gear, the travel motor 7 is in the high displacement position by default, so that the harvester maintains a relatively low speed;

[0089] 4. When the harvester is moving forward, in the transfer mode, when the gear switch 2 corresponding to the gearbox is in the third gear, and no steering signal is received from the steering handle 4, the travel motor 7 is controlled to be in a low displacement position, so that the harvester can travel at high speed to achieve the purpose of rapid transfer.

[0090] 5. When the harvester is moving forward, in the walking mode, when the gear switch 2 corresponding to the gearbox is in the third gear, and at the same time receives the left turn or right turn signal from the steering handle 4, the walking motor 7 is controlled to change from the high displacement position to the low displacement position, so that the harvester can slow down and avoid the danger caused by high-speed driving; when the turn signal ends, the walking motor 7 is controlled to change from the low displacement position to the high displacement position, so that the harvester can accelerate.

[0091] In short, the output of the travel motor 7 is automatically selected according to the actual state of the harvester, and the change of the harvester's driving speed is flexibly controlled. Specifically, according to the actual state, the travel pump 6 and the travel motor displacement are automatically adjusted to ensure both the driving force and the driving speed of the harvester. A variable motor is used, for example, two-speed multi-stage adjustment. During current control, slope control is used to improve the comfort of speed control.

[0092] In short, according to the gear information of the gear switch 2 of the gearbox, the working mode, the steering signal and other signals, the motor displacement of the travel motor 7 is automatically adjusted so that the harvester can meet the large driving force in the operation mode and the high-speed driving in the transfer mode. The adjustment process is automatic and can achieve smooth adjustment.

[0093] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the system and device described above can refer to the corresponding process in the method embodiment, and will not be repeated in this application. In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0094] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0095] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0096] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the deployment method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0097] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A harvester transfer efficiency improvement system, characterized in that: The system includes a working mode selection switch, a gear switch, a travel handle, a steering handle, a vehicle controller, a travel pump, and a travel motor; The working mode selection switch is used to determine the corresponding working mode in response to the user's selection operation on the working mode selection switch, and send the corresponding working mode selection switch signal to the vehicle controller; wherein the working mode includes an operation mode and a transition mode; The gear switch is used to send a gear switch signal to the vehicle controller to adjust the speed gear of the harvester; The walking handle is used to output a corresponding first voltage type analog signal to the vehicle controller according to the first position of the walking handle; wherein different first positions of the walking handle correspond to different first voltage type analog signals; The steering handle is used to output a corresponding second voltage type analog signal to the vehicle controller according to the second position of the steering handle; wherein different second positions of the steering handle correspond to different second voltage type analog signals; The vehicle controller is used to output a travel pump control current for the travel pump and a travel motor control current for the travel motor based on the working mode selection switch signal, the gear switch signal, the first voltage type analog signal and the second voltage type analog signal; The travel pump is used to receive the travel pump control current and adjust its own travel pump displacement based on the travel pump control current; The travel motor is used to receive the travel motor control current and adjust its own travel motor displacement in a preset adjustment mode based on the travel motor control current to adjust the driving force and travel speed of the harvester.

2. The system according to claim 1, characterized in that The output is a travel pump control current for the travel pump: Determine a first position of the walking handle based on the first voltage type analog signal; In response to the first position being the middle position, outputting a travel pump control current for the travel pump as 0, so as to make the harvester stationary; In response to the first position being forward or backward, a current percentage for the travel pump control current is calculated based on the first voltage-type analog signal; wherein the current percentage includes a current forward percentage and a current backward percentage; A travel pump control current output to the travel pump is determined based on the current percentage.

3. The system according to claim 2, characterized in that The calculating the current percentage of the travel pump control current based on the first voltage type analog signal includes: Calculate the difference between the real-time first voltage-type analog signal when the first position is forward and the first voltage-type analog signal when the first position is in the middle position, and calculate the forward percentage of the harvester based on the difference; Calculate the difference between the first voltage-type analog signal when the first position is the middle position and the real-time first voltage-type analog signal when the first position is the backward position, and calculate the backward percentage of the harvester based on the difference.

4. The system according to claim 3, characterized in that The travel pump is used to output its own travel pump real-time current and travel pump displacement to the vehicle controller; wherein the range of the travel pump real-time current is determined by the dead zone current and the maximum current.

5. The system according to claim 4, characterized in that The step of determining the travel pump control current output to the travel pump based on the current percentage includes: Obtaining the real-time current and displacement of the travel pump output by the travel pump; Calculate the real-time current value output to the travel pump based on the current percentage, the dead zone current of the travel pump, the maximum current, and the displacement of the travel pump; A travel pump control current output to the travel pump is adjusted based on the real-time current value.

6. The system according to claim 1, characterized in that The travel motor is used to output its own travel motor real-time current and travel motor displacement to the vehicle controller.

7. The system according to claim 6, characterized in that The output is for a travel motor control current of the travel motor, comprising: Based on the relationship between the real-time current of the travel motor and the displacement of the travel motor, and the gear switch signal, the travel motor control current output to the travel motor is determined.

8. The system according to claim 7, characterized in that The vehicle controller is also used to calculate the left turn percentage and the right turn percentage of the harvester according to the second voltage-type analog signal, and adjust the steering of the harvester based on the left turn percentage and the right turn percentage.

9. The system according to claim 1, characterized in that The system also includes a display screen; the display screen is connected to the vehicle controller CAN; The vehicle controller is used to send the driving speed of the harvester to the display screen; The display screen is used to receive the driving speed and display a high-speed indication when the driving speed is within a preset high-speed range, and display a low-speed driving when the driving speed is within a preset low-speed range.

10. The system according to claim 1, characterized in that The vehicle controller is also used to output the travel motor control current of the travel motor at a preset current change frequency; wherein the current change frequency is determined by the acceleration set by the user.

Images