Agricultural inflation and deflation system with load sensor, method and harvester

Abstract

The invention provides an agricultural inflation and deflation system with a load sensor, an agricultural inflation and deflation method and a harvester. An agricultural inflation and deflation system with load sensors comprises a pair of load sensors, a control valve set, an air source, a plurality of wheel side valves, a plurality of tires, a front axle and a rear axle, the pair of load sensors are installed on the front axle and the rear axle respectively, and the control valve set is connected with the air source and the wheel side valves through pipelines respectively. The plurality of wheel side valves are respectively connected with the plurality of tires, and the plurality of tires are respectively arranged on the front axle and the rear axle.

Description

Technical Field

[0001] The present invention relates to the technical field of harvester inflation and deflation, and in particular to an agricultural inflation and deflation system and method with a load sensor and a harvester. Background Art

[0002] Agricultural wheeled harvesters are periodic field operations. Harvesters are generally equipped with granaries. Harvesters use harvesting platforms and grain clearing devices to temporarily store the harvested grain in the granaries. As the grain in the granaries increases, the load of the vehicle continues to increase. When the granary is full of grain, the grain unloading device is used to empty the granary, and the vehicle returns to being empty, and the load is reduced. When the vehicle is heavily loaded, high tire pressure is required. High-pressure tires have a large load-bearing capacity, reduce tire flexural deformation, and reduce internal heat. When the vehicle is under low load, the tire pressure can be appropriately reduced to increase the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an agricultural inflation and deflation system, method and harvester with a load sensor in view of the deficiencies in the prior art.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an agricultural inflation and deflation system with a load sensor, comprising: a pair of load sensors, a control valve group, an air source, multiple wheel-side valves, multiple tires, a front axle and a rear axle, a pair of the load sensors are respectively installed on the front axle and the rear axle, the control valve group is respectively connected to the air source and the multiple wheel-side valves through pipelines, the multiple wheel-side valves are respectively connected to the multiple tires, and the multiple tires are respectively installed on the front axle and the rear axle.

[0005] The beneficial effects of the technical solution of the present invention are: the load sensor monitors the load changes of the front and rear axles, thereby adjusting the tire pressure to adapt to field operations. It improves the driving stability and operating efficiency of agricultural harvesters, reduces tire wear, and compacts the soil. It is particularly suitable for the situation where the tire load of the harvester changes periodically. When the load becomes larger, the tire pressure is increased, thereby increasing the tire load, reducing tire flexural deformation, and reducing endogenous heat. When the load of the entire vehicle becomes smaller, the tire pressure can be appropriately reduced, thereby increasing the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel.

[0006] Furthermore, the control valve group is provided with a quick air release port and a slow air release port; the control valve group is built with a pressure sensor.

[0007] The beneficial effects of adopting the above further technical solution are: the control valve group is equipped with a pressure sensor to monitor tire pressure. The fast deflation port and the slow deflation port are provided to facilitate the control valve group to realize inflation and deflation.

[0008] Furthermore, the front axle is equipped with a front axle seal, and the rear axle is equipped with a rear axle seal; and the plurality of wheel side valves are connected to the plurality of tires through valve nozzles, respectively.

[0009] The beneficial effect of adopting the above further technical solution is that the air pressure sealing device (front axle seal and rear axle seal) is built in the front and rear axles, so that it is more neat and beautiful. There is transmission oil in the front and rear axles, and the front axle seal and the rear axle seal can isolate the air path from the transmission oil.

[0010] Furthermore, a gas input interface and a gas output interface are provided on the front axle and the rear axle, the control valve group is connected to the gas input interface, and the gas output interface rotates with the tire.

[0011] The beneficial effect of adopting the above-mentioned further technical scheme is: the front axle seal and the rear axle seal are built into the front and rear axles, the gas input interfaces of the front and rear axles are fixed, and the gas output interfaces rotate with the tires, thereby playing the role of gas seal and air duct, and there is transmission oil in the front and rear axles, and the front axle seal and the rear axle seal can isolate the air path from the transmission oil.

[0012] Furthermore, the control valve group is connected to a controller, and a pair of load sensors are both connected to the controller; and the controller is connected to a display.

[0013] The beneficial effect of adopting the above further technical solution is: when the controller receives the control demand of the display, the gas in the gas source is distributed and transmitted to the wheel side valve group through the seal, and the air pressure is adjusted by the wheel side valve group. The front and rear axle loads are monitored by the load sensor, and the front and rear axle loads are calculated by the controller to automatically adjust the tire pressure.

[0014] In addition, the present invention also provides a harvester, comprising any one of the agricultural inflation and deflation systems with a load sensor as described above.

[0015] The beneficial effects of the technical solution of the present invention are: the load sensor monitors the load changes of the front and rear axles, thereby adjusting the tire pressure to adapt to field operations. It improves the driving stability and operating efficiency of agricultural harvesters, reduces tire wear, and compacts the soil. It is particularly suitable for the situation where the tire load of the harvester changes periodically. When the load becomes larger, the tire pressure is increased, thereby increasing the tire load, reducing tire flexural deformation, and reducing endogenous heat. When the load of the entire vehicle becomes smaller, the tire pressure can be appropriately reduced, thereby increasing the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel.

[0016] In addition, the present invention also provides an agricultural inflation and deflation method with a load sensor. Based on any one of the above agricultural inflation and deflation systems with a load sensor, the agricultural inflation and deflation method with a load sensor includes: S1. When the harvester is harvesting, a first load of the front axle and a first load of the rear axle are obtained respectively through a pair of load sensors; S2. According to the first load of the front axle and the first load of the rear axle, a first target air pressure is calculated; S3. The gas in the air source is conducted to a plurality of wheel side valves through a control valve group so that the plurality of wheel side valves are opened; S4. Multiple wheel-side valves fill gas into multiple tires respectively until the air pressure of the multiple tires reaches the first target air pressure; S5, when the harvester is unloading grain, a second load of the front axle and a second load of the rear axle are obtained respectively through a pair of load sensors; S6, according to the second load of the front axle and the second load of the rear axle, the second target air pressure is calculated; S7, the gas in the air source is conducted to the multiple wheel-side valves through the control valve group, so that the multiple wheel-side valves are opened; S8, the control valve group closes the air source and opens the slow air release port until the air pressure of the multiple tires reaches the second target air pressure.

[0017] The beneficial effects of the technical solution of the present invention are as follows: In the case of inflation, as the harvesting operation proceeds, the front and rear axle load sensors monitor the loads of the front and rear axles, and then transmit signals to the controller, indicating that the tires need to be inflated. The controller transmits an electrical signal to the control valve group, and the control valve group conducts the gas in the air source to the front axle seal and the rear axle seal. The air is transmitted to the wheel side valve through the front axle seal. At this time, the wheel side valve receives high air pressure, so that the air pressure wheel side valve opens, and the wheel side valve fills air into the tire through the air pipe and the valve nozzle. In the case of deflation, when the harvester's grain unloading device is operating, the loads of the front and rear axles are reduced, and the tires need to be deflated. The front and rear axle load sensors monitor the loads of the front and rear axles, and then transmit signals to the controller. The controller transmits an electrical signal to the control valve group, and at this time the control valve group conducts the gas in the air source to the front axle seal and the rear axle seal. The air pressure is transmitted to the wheel side valve through the front axle seal and the rear axle seal. At this time, the wheel side valve receives high air pressure, so the air pressure wheel side valve opens and connects to the control valve group. At this time, the air source and the air passage of the control valve group are closed, and the slow air release port is opened. The slow air release port can maintain the wheel side valve to discharge the gas in the tire, but the air pressure in the pipeline will not drop to the point where the wheel side valve is closed. The load sensor monitors the load changes of the front and rear axles, thereby adjusting the tire pressure to adapt to field operations. Improve the driving stability and operating efficiency of agricultural harvesters, reduce tire wear, and compact the soil. It is particularly suitable for the periodic load changes of harvester tires. When the load becomes larger, the tire pressure is increased, thereby increasing the tire load, reducing tire flexural deformation, and reducing internal heat. When the vehicle load becomes smaller, the tire pressure can be appropriately reduced, thereby increasing the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel.

[0018] Further, step S4 includes: S41, multiple wheel-side valves respectively inflate gas into multiple tires; S42, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S43, when the actual tire pressure of multiple tires reaches the first target pressure, the control valve group closes the air source, and opens the quick deflation port, so that the multiple wheel-side valves are closed, and the gas in the pipeline between the wheel-side valves and the control valve group is discharged; step S8 includes: S81, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S82, when the actual tire pressure of multiple tires reaches the second target pressure, the control valve group closes the slow deflation port, and opens the quick deflation port, so that the multiple wheel-side valves are closed, and the gas in the pipeline between the wheel-side valves and the control valve group is discharged.

[0019] The beneficial effect of adopting the above further technical solution is: during the inflation process, the control valve group will monitor the tire pressure. When the air pressure reaches the target pressure, the control valve group will cut off the gas from the air source and open the quick air release port. The wheel side valve will be closed because of the reduced air pressure. The control valve group will discharge the gas from the wheel side valve to the control valve group section, thereby reducing the air pressure inside the front and rear axle seals, and meet the requirements for increasing the durability of the front and rear axle seals. The control valve group will monitor the tire pressure. When the air pressure reaches the target pressure, the control valve group will close the slow air release port and open the quick air release port. The wheel side valve will be closed because of the reduced air pressure. The control valve group will discharge the gas from the wheel side valve to the control valve group section, thereby reducing the air pressure inside the front and rear axle seals, and meet the requirements for increasing the durability of the front and rear axle seals.

[0020] Further, step S2 includes: S21, obtaining the first loads of multiple front axles and the first loads of multiple rear axles within a first preset time period; S22, calculating the average value of the first loads of the front axles and the average value of the first loads of the rear axles based on the first loads of the multiple front axles and the first loads of the multiple rear axles within the first preset time period; S23, calculating the first target air pressure based on the average value of the first loads of the front axles and the average value of the first loads of the front axles; step S6 includes: S61, obtaining the second loads of multiple front axles and the second loads of multiple rear axles within a second preset time period; S62, calculating the average value of the second loads of the front axles and the average value of the second loads of the rear axles based on the second loads of the multiple front axles and the second loads of the multiple rear axles within the second preset time period; S63, calculating the second target air pressure based on the average value of the second loads of the front axles and the average value of the second loads of the rear axles.

[0021] The beneficial effect of adopting the above further technical solution is: in order to avoid unexpected interference such as large short-term changes in the load of the front and rear axles due to uneven road surface, the controller will calculate the sensor signal within a period of time, and then filter the abnormal signal, and then calculate and control the tire pressure. Sometimes due to the influence of stones or uneven road surface, a high load will appear for a short time, and then it will be reduced to a normal load. For this kind of controller, the short-term abnormal signal will be filtered and then calculated. The calculation will be performed by taking a weighted average based on the load for a period of time. The pressure regulation is not carried out all the time, but generally once a period of time. Improve the stability and reliability of the agricultural automatic inflation and deflation system and method with load sensors.

[0022] Furthermore, it also includes: S9, when the tire pressure is maintained, the control valve group conducts the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S10, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S11, when the harvester enters the road, the display obtains the third target air pressure input by the user, and transmits the third target air pressure to the controller; S12, the controller controls the control valve group according to the third target air pressure to conduct the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S13, the multiple wheel side valves respectively fill the gas into multiple tires until the air pressure of the multiple tires reaches the third target air pressure.

[0023] The beneficial effects of adopting the above further technical solution are: in the case of tire pressure maintenance, the wheel side valve remains closed, but because of the need to monitor the tire pressure, the control valve group will be opened from time to time to introduce the gas in the air source into the system, thereby opening the wheel side valve, and the wheel side valve gas is connected to the control valve group to monitor the tire pressure. In terms of road conditions, when the harvester enters the road, in order to reduce fuel consumption and tire wear, high air pressure is generally used. The driver controls the display to adjust the air pressure, and the display transmits the control signal to the controller. The tire pressure adjustment process is the same as the inflation process.

[0024] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of an agricultural gas filling and deflation system with a load sensor provided in an embodiment of the present invention.

[0026] Figure 2 A schematic flowchart of an agricultural inflation and deflation method with a load sensor provided in an embodiment of the present invention.

[0027] Explanation of the accompanying numbers: 1. Load sensor; 2. Control valve group; 3. Air source; 4. Wheel side valve; 5. Tire; 6. Quick air release port; 7. Slow air release port; 8. Front axle seal; 9. Rear axle seal; 10. Valve nozzle; 11. Controller; 12. Display. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention but not to limit the scope of the present invention.

[0029] like Figure 1As shown, an embodiment of the present invention provides an agricultural inflation and deflation system with a load sensor, comprising: a pair of load sensors 1, a control valve group 2, an air source 3, a plurality of wheel-side valves 4, a plurality of tires 5, a front axle and a rear axle, wherein the pair of load sensors 1 are respectively mounted on the front axle and the rear axle, the control valve group 2 is respectively connected to the air source 3 and the plurality of wheel-side valves 4 through pipelines, the plurality of wheel-side valves 4 are respectively connected to the plurality of tires 5, and the plurality of tires 5 are respectively mounted on the front axle and the rear axle.

[0030] The beneficial effects of the technical solution of the present invention are: the load sensor monitors the load changes of the front and rear axles, thereby adjusting the tire pressure to adapt to field operations. It improves the driving stability and operating efficiency of agricultural harvesters, reduces tire wear, and compacts the soil. It is particularly suitable for the situation where the tire load of the harvester changes periodically. When the load becomes larger, the tire pressure is increased, thereby increasing the tire load, reducing tire flexural deformation, and reducing endogenous heat. When the load of the entire vehicle becomes smaller, the tire pressure can be appropriately reduced, thereby increasing the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel.

[0031] Figure 1 The dotted line in the figure represents signal transmission.

[0032] The embodiment of the present invention designs an agricultural inflation and deflation system with a load sensor, which can be a tire automatic adjustment system with a load sensor, improve the driving stability and working efficiency of agricultural harvesters, reduce tire wear, and compact the soil. When the controller receives the control demand of the display, it distributes the gas in the air source and transmits it to the wheel side valve group (wheel side valve) through the seal, and the air pressure is adjusted through the wheel side valve group. The air pressure sealing device (front axle seal and rear axle seal) is built into the front and rear axles, making it more neat and beautiful. The load sensor monitors the load changes of the front and rear axles, thereby adjusting the tire pressure to adapt to field operations.

[0033] The present invention is composed of an air source, a control valve group, a controller, a display, a front axle seal, a rear axle seal, a wheel side valve, a tire, a valve, a load sensor, etc. The control valve group is equipped with a pressure sensor to monitor tire pressure. There is a quick air release port and a slow air release port on the control valve group. The front axle seal and the rear axle seal are built into the front and rear axles, the front and rear axle gas input interfaces are fixed, and the gas output interface rotates with the tire, thereby playing the role of gas seal and airway, and there is transmission oil in the front and rear axles, and the front axle seal and the rear axle seal can isolate the air path from the transmission oil. The wheel side valve has the function of controlling the on and off of the gas.

[0034] like Figure 1As shown, further, the control valve group 2 is provided with a quick air release port 6 and a slow air release port 7; the control valve group 2 is built with a pressure sensor.

[0035] The beneficial effects of adopting the above further technical solution are: the control valve group is equipped with a pressure sensor to monitor tire pressure. The fast deflation port and the slow deflation port are provided to facilitate the control valve group to realize inflation and deflation.

[0036] like Figure 1 As shown, further, the front axle is built with a front axle seal 8, and the rear axle is built with a rear axle seal 9; the multiple wheel side valves 4 are connected to the multiple tires 5 through valve nozzles 10 respectively.

[0037] The beneficial effect of adopting the above further technical solution is that the air pressure sealing device (front axle seal and rear axle seal) is built in the front and rear axles, so that it is more neat and beautiful. There is transmission oil in the front and rear axles, and the front axle seal and the rear axle seal can isolate the air path from the transmission oil.

[0038] like Figure 1 As shown, further, a gas input interface and a gas output interface are provided on the front axle and the rear axle, the control valve group 2 is connected to the gas input interface, and the gas output interface rotates with the tire 5.

[0039] The beneficial effect of adopting the above-mentioned further technical scheme is: the front axle seal and the rear axle seal are built into the front and rear axles, the gas input interfaces of the front and rear axles are fixed, and the gas output interfaces rotate with the tires, thereby playing the role of gas seal and air duct, and there is transmission oil in the front and rear axles, and the front axle seal and the rear axle seal can isolate the air path from the transmission oil.

[0040] like Figure 1 As shown, further, the control valve group 2 is connected to a controller 11 , and a pair of load sensors 1 are both connected to the controller 11 ; the controller 11 is connected to a display 12 .

[0041] The beneficial effect of adopting the above further technical solution is: when the controller receives the control demand of the display, the gas in the gas source is distributed and transmitted to the wheel side valve group through the seal, and the air pressure is adjusted by the wheel side valve group. The front and rear axle loads are monitored by the load sensor, and the front and rear axle loads are calculated by the controller to automatically adjust the tire pressure.

[0042] In addition, the present invention also provides a harvester, comprising any one of the agricultural inflation and deflation systems with a load sensor as described above.

[0043] The beneficial effects of the technical solution of the present invention are: the load sensor monitors the load changes of the front and rear axles, thereby adjusting the tire pressure to adapt to field operations. It improves the driving stability and operating efficiency of agricultural harvesters, reduces tire wear, and compacts the soil. It is particularly suitable for the situation where the tire load of the harvester changes periodically. When the load becomes larger, the tire pressure is increased, thereby increasing the tire load, reducing tire flexural deformation, and reducing endogenous heat. When the load of the entire vehicle becomes smaller, the tire pressure can be appropriately reduced, thereby increasing the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel.

[0044] like Figure 2 As shown, in addition, the present invention also provides an agricultural inflation and deflation method with a load sensor, based on any one of the above agricultural inflation and deflation systems with a load sensor, the agricultural inflation and deflation method with a load sensor includes: S1, when the harvester is harvesting, a first load of the front axle and a first load of the rear axle are respectively obtained through a pair of load sensors; S2, according to the first load of the front axle and the first load of the rear axle, a first target air pressure is calculated; S3, the gas in the air source is conducted to a plurality of wheel side valves through a control valve group, so that the plurality of wheel side valves are opened; S 4. Multiple wheel-side valves fill gas into multiple tires respectively until the air pressure of multiple tires reaches the first target air pressure; S5. When the harvester is unloading grain, a second load of the front axle and a second load of the rear axle are obtained respectively through a pair of load sensors; S6. The second target air pressure is calculated according to the second load of the front axle and the second load of the rear axle; S7. The gas in the air source is conducted to the multiple wheel-side valves through the control valve group, so that the multiple wheel-side valves are opened; S8. The control valve group closes the air source and opens the slow air release port until the air pressure of multiple tires reaches the second target air pressure.

[0045] The beneficial effects of the technical solution of the present invention are as follows: In the case of inflation, as the harvesting operation proceeds, the front and rear axle load sensors monitor the loads of the front and rear axles, and then transmit signals to the controller, indicating that the tires need to be inflated. The controller transmits an electrical signal to the control valve group, and the control valve group conducts the gas in the air source to the front axle seal and the rear axle seal. The air is transmitted to the wheel side valve through the front axle seal. At this time, the wheel side valve receives high air pressure, so that the air pressure wheel side valve opens, and the wheel side valve fills air into the tire through the air pipe and the valve nozzle. In the case of deflation, when the harvester's grain unloading device is operating, the loads of the front and rear axles are reduced, and the tires need to be deflated. The front and rear axle load sensors monitor the loads of the front and rear axles, and then transmit signals to the controller. The controller transmits an electrical signal to the control valve group, and at this time the control valve group conducts the gas in the air source to the front axle seal and the rear axle seal. The air pressure is transmitted to the wheel side valve through the front axle seal and the rear axle seal. At this time, the wheel side valve receives high air pressure, so the air pressure wheel side valve opens and connects to the control valve group. At this time, the air source and the air passage of the control valve group are closed, and the slow air release port is opened. The slow air release port can maintain the wheel side valve to discharge the gas in the tire, but the air pressure in the pipeline will not drop to the point where the wheel side valve is closed. The load sensor monitors the load changes of the front and rear axles, thereby adjusting the tire pressure to adapt to field operations. Improve the driving stability and operating efficiency of agricultural harvesters, reduce tire wear, and compact the soil. It is particularly suitable for the periodic load changes of harvester tires. When the load becomes larger, the tire pressure is increased, thereby increasing the tire load, reducing tire flexural deformation, and reducing internal heat. When the vehicle load becomes smaller, the tire pressure can be appropriately reduced, thereby increasing the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel.

[0046] Further, step S4 includes: S41, multiple wheel-side valves respectively inflate gas into multiple tires; S42, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S43, when the actual tire pressure of multiple tires reaches the first target pressure, the control valve group closes the air source, and opens the quick deflation port, so that the multiple wheel-side valves are closed, and the gas in the pipeline between the wheel-side valves and the control valve group is discharged; step S8 includes: S81, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S82, when the actual tire pressure of multiple tires reaches the second target pressure, the control valve group closes the slow deflation port, and opens the quick deflation port, so that the multiple wheel-side valves are closed, and the gas in the pipeline between the wheel-side valves and the control valve group is discharged.

[0047] The beneficial effect of adopting the above further technical solution is: during the inflation process, the control valve group will monitor the tire pressure. When the air pressure reaches the target pressure, the control valve group will cut off the gas from the air source and open the quick air release port. The wheel side valve will be closed because of the reduced air pressure. The control valve group will discharge the gas from the wheel side valve to the control valve group section, thereby reducing the air pressure inside the front and rear axle seals, and meet the requirements for increasing the durability of the front and rear axle seals. The control valve group will monitor the tire pressure. When the air pressure reaches the target pressure, the control valve group will close the slow air release port and open the quick air release port. The wheel side valve will be closed because of the reduced air pressure. The control valve group will discharge the gas from the wheel side valve to the control valve group section, thereby reducing the air pressure inside the front and rear axle seals, and meet the requirements for increasing the durability of the front and rear axle seals.

[0048] Further, step S2 includes: S21, obtaining the first loads of multiple front axles and the first loads of multiple rear axles within a first preset time period; S22, calculating the average value of the first loads of the front axles and the average value of the first loads of the rear axles based on the first loads of the multiple front axles and the first loads of the multiple rear axles within the first preset time period; S23, calculating the first target air pressure based on the average value of the first loads of the front axles and the average value of the first loads of the front axles; step S6 includes: S61, obtaining the second loads of multiple front axles and the second loads of multiple rear axles within a second preset time period; S62, calculating the average value of the second loads of the front axles and the average value of the second loads of the rear axles based on the second loads of the multiple front axles and the second loads of the multiple rear axles within the second preset time period; S63, calculating the second target air pressure based on the average value of the second loads of the front axles and the average value of the second loads of the rear axles.

[0049] The beneficial effect of adopting the above further technical solution is: in order to avoid unexpected interference such as large short-term changes in the load of the front and rear axles due to uneven road surface, the controller will calculate the sensor signal within a period of time, and then filter the abnormal signal, and then calculate and control the tire pressure. Sometimes due to the influence of stones or uneven road surface, a high load will appear for a short time, and then it will be reduced to a normal load. For this kind of controller, the short-term abnormal signal will be filtered and then calculated. The calculation will be performed by taking a weighted average based on the load for a period of time. The pressure regulation is not carried out all the time, but generally once a period of time. Improve the stability and reliability of the agricultural automatic inflation and deflation system and method with load sensors.

[0050] In order to avoid unexpected interference such as large short-term changes in the load on the front and rear axles due to uneven road surfaces, the controller will calculate the sensor signal (load sensor) within a period of time, then filter the abnormal signal, and then calculate and control the tire pressure. (Sometimes due to the influence of stones or uneven road surfaces, there will be a short-term high load, and then it will be reduced to normal load. For this kind of controller, the short-term abnormal signal will be filtered and then calculated. The weighted average will be used for calculation based on the load over a period of time.) Pressure regulation is not performed all the time, and is generally performed once in a period of time.

[0051] Furthermore, it also includes: S9, when the tire pressure is maintained, the control valve group conducts the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S10, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S11, when the harvester enters the road, the display obtains the third target air pressure input by the user, and transmits the third target air pressure to the controller; S12, the controller controls the control valve group according to the third target air pressure to conduct the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S13, the multiple wheel side valves respectively fill the gas into multiple tires until the air pressure of the multiple tires reaches the third target air pressure.

[0052] The beneficial effects of adopting the above further technical solution are: in the case of tire pressure maintenance, the wheel side valve remains closed, but because of the need to monitor the tire pressure, the control valve group will be opened from time to time to introduce the gas in the air source into the system, thereby opening the wheel side valve, and the wheel side valve gas is connected to the control valve group to monitor the tire pressure. In terms of road conditions, when the harvester enters the road, in order to reduce fuel consumption and tire wear, high air pressure is generally used. The driver controls the display to adjust the air pressure, and the display transmits the control signal to the controller. The tire pressure adjustment process is the same as the inflation process.

[0053] The following will describe the four working conditions of inflation, deflation and tire pressure maintenance.

[0054] Inflation: As the harvesting operation proceeds, the front and rear axle load sensors (load sensors) monitor the front and rear axle loads, and then transmit signals to the controller. (As the load increases, it is necessary to inflate. The front and rear axle loads correspond to the tire pressure, and a step value method will be used. The larger the load, the higher the pressure. It is similar to a table. The pressure is given according to the load.) The tire needs to be inflated, and the controller transmits an electrical signal to the control valve group. The control valve group conducts the gas in the air source to the front axle seal and the rear axle seal. It is transmitted to the wheel side valve through the front axle seal. At this time, the wheel side valve receives high air pressure, so that the air pressure wheel side valve opens, and the wheel side valve fills air into the tire through the air pipe and the valve nozzle. During the inflation process, the control valve group monitors the tire pressure. When the air pressure reaches the target pressure, the control valve group cuts off the gas from the air source and opens the quick air release port. The wheel side valve closes because of the reduced air pressure. The control valve group will discharge the gas from the wheel side valve to the control valve group section, thereby reducing the air pressure inside the front and rear axle seals, achieving the requirement of increasing the durability of the front and rear axle seals.

[0055] Deflation: When the harvester unloading device is in operation, the load on the front and rear axles is reduced (the load is reduced, and the deflation operation is required. When the load is reduced to a certain level, the controller will reduce the air pressure to the corresponding level.) The tires need to be deflated. The front and rear axle load sensors monitor the load on the front and rear axles, and then transmit signals to the controller. The controller transmits electrical signals to the control valve group. At this time, the control valve group will conduct the gas in the air source to the front axle seal and the rear axle seal. It is transmitted to the wheel side valve through the front axle seal and the rear axle seal. At this time, the wheel side valve receives high air pressure, so the air pressure wheel side valve opens and connects to the control valve group. At this time, the air channel between the air source and the control valve group is closed, and the slow deflation port is opened. The slow deflation port can maintain the wheel side valve to discharge the gas in the tire, but the air pressure in the pipeline will not drop to the point where the wheel side valve is closed. The control valve group will monitor the tire pressure. When the air pressure reaches the target pressure, the control valve group closes the slow deflation valve (slow deflation port) and opens the fast deflation port. The wheel side valve is closed because of the reduced air pressure. The control valve group will discharge the gas from the wheel side valve to the control valve group section, thereby reducing the air pressure inside the front and rear axle seals, achieving the requirement of increasing the durability of the front and rear axle seals.

[0056] When the tire is in pressure maintenance condition, the wheel side valve remains closed. However, due to the need to monitor the tire pressure, the control valve group will open from time to time to introduce the gas in the air source into the system, thereby opening the wheel side valve. The wheel side valve gas is connected to the control valve group for tire pressure monitoring.

[0057] Road conditions, until the harvester enters the road, in order to reduce fuel consumption and reduce tire wear, high air pressure is generally used. The driver controls the display to adjust the air pressure. The display transmits the control signal to the controller. The tire pressure adjustment process is the same as the inflation process.

[0058] 1. The present invention monitors the front and rear axle loads through load sensors, and automatically adjusts the tire pressure by calculating the front and rear axle loads through a controller. 2. The present invention can control modes such as inflation, deflation, and tire pressure monitoring. 3. The sealed built-in type is adopted, so that the pipeline layout is more beautiful.

[0059] An agricultural automatic inflation and deflation system with a load sensor provided in an embodiment of the present invention can be a new type of agricultural tire inflation and deflation system with a sensor, which has modes such as tire inflation, deflation, tire pressure maintenance, and road transportation. The pipeline layout is more beautiful through the built-in seal. It is particularly suitable for the situation where the harvester tire has periodic load changes. When the load becomes larger, the tire pressure is increased, thereby increasing the tire load, reducing tire flexural deformation, and reducing endogenous heat. When the load of the entire vehicle becomes smaller, the tire pressure can be appropriately reduced, thereby increasing the contact area between the tire and the soil, thereby reducing soil compaction and reducing the soil wedge angle caused by soil subsidence, thereby reducing soil resistance and achieving the effect of saving fuel.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An agricultural gas filling and deflation system with a load sensor, characterized in that: include: A pair of load sensors, a control valve group, an air source, multiple wheel-side valves, multiple tires, a front axle and a rear axle, wherein the pair of load sensors are respectively installed on the front axle and the rear axle, the control valve group is respectively connected to the air source and the multiple wheel-side valves through pipelines, the multiple wheel-side valves are respectively connected to the multiple tires, and the multiple tires are respectively installed on the front axle and the rear axle.

2. The agricultural gas filling and deflation system with a load sensor according to claim 1, characterized in that: The control valve group is provided with a quick air release port and a slow air release port; the control valve group is built with a pressure sensor.

3. The agricultural gas filling and deflation system with a load sensor according to claim 1, characterized in that: The front axle is equipped with a front axle seal, and the rear axle is equipped with a rear axle seal; the plurality of wheel side valves are connected to the plurality of tires through valve nozzles respectively.

4. The agricultural gas filling and deflation system with a load sensor according to claim 1, characterized in that: The front axle and the rear axle are both provided with a gas input interface and a gas output interface, the control valve group is connected to the gas input interface, and the gas output interface rotates with the tire.

5. The agricultural gas filling and deflation system with a load sensor according to claim 1, characterized in that: The control valve group is connected to a controller, and a pair of load sensors are both connected to the controller; the controller is connected to a display.

6. A harvester, characterized in that: An agricultural inflation and deflation system with a load sensor comprising any one of claims 1 to 5.

7. An agricultural inflation and deflation method with a load sensor, characterized in that: Based on the agricultural gas filling and deflation system with a load sensor according to any one of claims 1 to 5, the agricultural gas filling and deflation method with a load sensor comprises: S1. When the harvester is harvesting, a first load on the front axle and a first load on the rear axle are obtained respectively through a pair of load sensors; S2. calculating a first target air pressure according to a first load on the front axle and a first load on the rear axle; S3, conducting the gas in the gas source to the multiple wheel-side valves through the control valve group, so that the multiple wheel-side valves are opened; S4, the plurality of wheel side valves respectively inflate the gas into the plurality of tires until the air pressure of the plurality of tires reaches the first target air pressure; S5. When the harvester is unloading grain, a second load of the front axle and a second load of the rear axle are respectively obtained through a pair of load sensors; S6. calculating a second target air pressure according to a second load on the front axle and a second load on the rear axle; S7, conducting the gas in the gas source to the multiple wheel-side valves through the control valve group, so that the multiple wheel-side valves are opened; S8. The control valve group closes the air source and opens the slow deflation port until the air pressure of the multiple tires reaches the second target air pressure.

8. The agricultural inflation and deflation method with a load sensor according to claim 7, characterized in that: Step S4 includes: S41, multiple wheel side valves respectively inflate gas into multiple tires; S42, the control valve group monitors the actual tire pressure of multiple tires through the pressure sensor; S43, when the actual tire pressures of the multiple tires all reach the first target pressure, the control valve group closes the air source and opens the quick air release port, so that the multiple wheel side valves are closed and the gas in the pipeline between the wheel side valve and the control valve group is discharged; Step S8 includes: S81, the control valve group monitors the actual tire pressure of multiple tires through the pressure sensor; S82. When the actual tire pressures of the multiple tires reach the second target pressure, the control valve group closes the slow deflation port and opens the fast deflation port, so that the multiple wheel side valves are closed and the gas in the pipeline between the wheel side valve and the control valve group is discharged.

9. The agricultural inflation and deflation method with a load sensor according to claim 7, characterized in that: Step S2 includes: S21, obtaining first loads of a plurality of front axles and first loads of a plurality of rear axles within a first preset time period; S22, calculating an average value of the first loads of the front axles and an average value of the first loads of the rear axles according to the first loads of the plurality of front axles and the first loads of the plurality of rear axles within the first preset time period; S23, calculating a first target air pressure according to an average value of the first load of the front axle and an average value of the first load of the front axle; Step S6 includes: S61, obtaining a second load of a plurality of front axles and a second load of a plurality of rear axles within a second preset time period; S62, calculating an average value of the second loads of the front axles and an average value of the second loads of the rear axles according to the second loads of the plurality of front axles and the second loads of the plurality of rear axles within the second preset time period; S63: Calculate a second target air pressure according to an average value of the second load of the front axle and an average value of the second load of the rear axle.

10. The agricultural inflation and deflation method with a load sensor according to claim 7, characterized in that: Also includes: S9, when the tire pressure is maintained, the control valve group conducts the gas in the gas source to the multiple wheel side valves, so that the multiple wheel side valves are opened; S10, the control valve group monitors the actual tire pressure of multiple tires through the pressure sensor; S11, when the harvester enters the road, the display obtains the third target air pressure input by the user, and transmits the third target air pressure to the controller; S12, the controller controls the control valve group to conduct the gas in the gas source to the multiple wheel side valves according to the third target air pressure, so that the multiple wheel side valves are opened; S13, the plurality of wheel side valves respectively inflate the plurality of tires with gas until the air pressures of the plurality of tires reach a third target air pressure.

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