Tractor inflation and deflation system and method and tractor

Abstract

The invention provides a tractor inflation and deflation system and method and a tractor. A tractor inflation and deflation system comprises 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 control valve set is connected with the air source and the wheel side valves through pipelines, the wheel side valves are connected with the tires, and the tires are installed on the front axle and the rear axle respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of tractor inflation and deflation, and in particular to a tractor inflation and deflation system, method and tractor. Background Art

[0002] Agricultural tractors need to perform soil field operations and road transportation operations. During field operations, low air pressure has the effect of increasing the contact area between the tire and the soil, thereby reducing soil compaction and increasing field traction. After the tire sinkage is reduced, the wedge angle of the field soil is reduced, thereby further reducing soil resistance. Low air pressure also has the effect of reducing tire slippage during field operations, thereby further increasing traction and reducing fuel consumption. In road transportation operations, high air pressure has the effect of reducing fuel consumption rate and reducing tire wear. Under road conditions, rolling resistance is reduced, reducing fuel consumption rate, because the number of tire treads contacting the ground is reduced, thereby reducing tire wear, and during high-speed transportation operations, the deflection of the tire is reduced, thereby reducing friction and heat generation in the tire, thereby reducing the risk of tire blowout. Under the current situation, manual adjustment of tire pressure is generally adopted, but because agricultural machinery road soil operations are frequently switched, manual adjustment is cumbersome. Or an intermediate air pressure method is adopted. In the intermediate air pressure method, neither the road nor the field can obtain the best tire working conditions. Summary of the invention

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

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

[0005] The beneficial effects of the technical solution of the present invention are: improving the driving stability and operating efficiency of agricultural tractors, reducing tire wear, and soil compaction. Agricultural tires can increase traction, reduce fuel consumption, and reduce soil compaction in field operations by adjusting tire pressure. In road conditions, it can reduce tire wear, reduce fuel consumption, and reduce tire flexural deformation at high speeds, thereby reducing internal heat and reducing the risk of tire blowouts.

[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 built with a pressure sensor to monitor tire pressure. There is a fast deflation port and a slow deflation port on the control valve group, which is convenient for charging and deflation of the control valve group.

[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 in the front and rear axles, so that it is more neat and beautiful. The internal seal is adopted, so that the pipeline layout is more beautiful.

[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 effects of adopting the above further technical solution are: 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 airway from the transmission oil. The wheel side valve has the function of controlling the on and off of gas.

[0012] Furthermore, the control valve group is connected to a controller, and the controller is connected to a display.

[0013] The beneficial effect of adopting the above further technical solution is: a calculation program is preset in the control valve group, and when a control demand of the display is received, 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 tire pressure is adjusted through the display.

[0014] Furthermore, the controller is connected to an ISOBUS connector, and the control valve group is connected to a gas output connector.

[0015] The beneficial effect of adopting the above further technical solution is that the ISOBUS connector can realize data communication between the tractor and the agricultural machinery, including the agricultural trailer. The gas output connector can be connected to the ISOBUS and the trailer or agricultural machinery to adjust the gas pressure of the corresponding trailer or agricultural machinery.

[0016] In addition, the present invention also provides a tractor, comprising any one of the above-mentioned tractor inflation and deflation systems.

[0017] The beneficial effects of the technical solution of the present invention are: improving the driving stability and operating efficiency of agricultural tractors, reducing tire wear, and soil compaction. Agricultural tires can increase traction, reduce fuel consumption, and reduce soil compaction in field operations by adjusting tire pressure. In road conditions, it can reduce tire wear, reduce fuel consumption, and reduce tire flexural deformation at high speeds, thereby reducing internal heat and reducing the risk of tire blowouts.

[0018] In addition, the present invention also provides a tractor inflation and deflation method, which is based on a tractor inflation and deflation system described in any one of the above items, and the tractor inflation and deflation method includes: S1, when the tractor enters the road from the field, obtaining a first target air pressure input by a user; S2, according to the first target air pressure, controlling the control valve group to conduct the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S3, the multiple wheel side valves respectively fill the gas into multiple tires until the air pressure of the multiple tires reaches the first target air pressure; S4, when the tractor enters the field from the road, obtaining a second target air pressure input by a user; S5, according to the second target air pressure, controlling the control valve group to conduct the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S6, 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.

[0019] The beneficial effects of the technical solution of the present invention are as follows: in the case of inflation, when entering the road from the field, the tire needs to be inflated, at this time the driver touches the button of the display, the display transmits a 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. 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 (wheel side valve) opens, and the tire valve (wheel side valve) fills the air into the tire through the air pipe and the valve nozzle. In the case of deflation, when entering the field from the road, the tire needs to be deflated, at this time the driver touches the button of the display, the display transmits a 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. 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. Improve the driving stability and operating efficiency of agricultural tractors, reduce tire wear, and soil compaction. Agricultural tires adjust tire pressure to increase traction, reduce fuel consumption, and reduce soil compaction in field operations. In road conditions, it reduces tire wear, fuel consumption, and reduces tire flexural deformation at high speeds, thereby reducing internal heat and reducing the risk of tire blowouts.

[0020] Further, step S3 includes: S31, multiple wheel-side valves respectively inflate gas into multiple tires; S32, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S33, 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 S6 includes: S61, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S62, 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.

[0021] 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 deflation 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 deflation valve (slow deflation port) and open the quick deflation 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.

[0022] Furthermore, it also includes: S7, under the condition of tire pressure maintenance, 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; S8, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S9, when the tractor tows an agricultural trailer, the controller obtains the tire pressure of the agricultural trailer or agricultural machinery through the ISOBUS connector; S10, the tire pressure of the agricultural trailer or agricultural machinery is displayed on the display; S11, the third target pressure input by the user is obtained; S12, according to the third target pressure, the control valve group is controlled to conduct the gas in the air source to the tires of the agricultural trailer or agricultural machinery until the tire pressure of the agricultural trailer or agricultural machinery reaches the third target pressure.

[0023] The beneficial effect of adopting the above further technical solution is: 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 gas source into the system, thereby opening the wheel side valve, and the wheel side valve gas is connected to the control valve group, so as to monitor the tire pressure. When the tractor tows an agricultural trailer, the tractor and the agricultural trailer or agricultural machinery will be connected to the trailer through the gas output connector, and the data signal will be connected to the agricultural trailer or agricultural machinery through ISOBUS. The information of the tire pressure of the agricultural trailer axle will be displayed on the display, and the adjustment signal can be output to the controller through the display to adjust the air pressure of the agricultural trailer or agricultural machinery through the control valve group.

[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 a tractor inflation and deflation system provided in an embodiment of the present invention.

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

[0027] Explanation of the accompanying numbers: 1. Control valve group; 2. Air source; 3. Wheel side valve; 4. Tire; 5. Quick air release port; 6. Slow air release port; 7. Front axle seal; 8. Rear axle seal; 9. Valve nozzle; 10. Controller; 11. Display; 12. ISOBUS connector; 13. Gas output connector. 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 1 As shown, an embodiment of the present invention provides a tractor inflation and deflation system, comprising: a control valve group 1, an air source 2, a plurality of wheel-side valves 3, a plurality of tires 4, a front axle and a rear axle, the control valve group 1 being connected to the air source 2 and the plurality of wheel-side valves 3 through pipelines, the plurality of wheel-side valves 3 being connected to the plurality of tires 4, and the plurality of tires 4 being installed on the front axle and the rear axle respectively.

[0030] The beneficial effects of the technical solution of the present invention are: improving the driving stability and operating efficiency of agricultural tractors, reducing tire wear, and soil compaction. Agricultural tires can increase traction, reduce fuel consumption, and reduce soil compaction in field operations by adjusting tire pressure. In road conditions, it can reduce tire wear, reduce fuel consumption, and reduce tire flexural deformation at high speeds, thereby reducing internal heat and reducing the risk of tire blowouts.

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

[0032] The embodiment of the present invention provides a tractor inflation and deflation system, which can be a set of automatic tire adjustment system, improve the driving stability and working efficiency of agricultural tractors, reduce tire wear, and compact the soil. The control valve group presets a calculation program, and when the control demand of the display is received, the gas in the air source is distributed and transferred to the wheel side valve group (wheel side valve) through the seal (front axle seal and rear axle 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, which is more neat and beautiful.

[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 gas output connector, an ISOBUS connector, etc. The control valve group is equipped with a pressure sensor to monitor tire pressure. On the control valve group, there is a quick air release port and a slow air release port. 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 gas path from the transmission oil. The wheel-side valve has the function of controlling the on-off of the gas. The ISOBUS interface (ISOBUS connector) can realize data communication between the tractor and agricultural machinery, including agricultural trailers.

[0034] like Figure 1 As shown, further, the control valve group 1 is provided with a quick air release port 5 and a slow air release port 6; the control valve group 1 is built with a pressure sensor.

[0035] The beneficial effects of adopting the above further technical solution are: the control valve group is built with a pressure sensor to monitor tire pressure. There is a fast deflation port and a slow deflation port on the control valve group, which is convenient for charging and deflation of the control valve group.

[0036] like Figure 1 As shown, further, the front axle is built with a front axle seal 7, and the rear axle is built with a rear axle seal 8; the multiple wheel side valves 3 are connected to the multiple tires 4 through valve nozzles 9 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 in the front and rear axles, so that it is more neat and beautiful. The internal seal is adopted, so that the pipeline layout is more beautiful.

[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 1 is connected to the gas input interface, and the gas output interface rotates with the tire 4.

[0039] The beneficial effects of adopting the above further technical solution are: 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 airway from the transmission oil. The wheel side valve has the function of controlling the on and off of gas.

[0040] like Figure 1 As shown, further, the control valve group 1 is connected to a controller 10 , and the controller 10 is connected to a display 11 .

[0041] The beneficial effect of adopting the above further technical solution is: a calculation program is preset in the control valve group, and when a control demand of the display is received, 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 tire pressure is adjusted through the display.

[0042] like Figure 1 As shown, further, the controller 10 is connected to an ISOBUS connector 12 , and the control valve group 1 is connected to a gas output connector 13 .

[0043] The beneficial effect of adopting the above further technical solution is that the ISOBUS connector can realize data communication between the tractor and the agricultural machinery, including the agricultural trailer. The gas output connector can be connected to the ISOBUS and the trailer or agricultural machinery to adjust the gas pressure of the corresponding trailer or agricultural machinery.

[0044] In addition, the present invention also provides a tractor, comprising any one of the above-mentioned tractor inflation and deflation systems.

[0045] The beneficial effects of the technical solution of the present invention are: improving the driving stability and operating efficiency of agricultural tractors, reducing tire wear, and soil compaction. Agricultural tires can increase traction, reduce fuel consumption, and reduce soil compaction in field operations by adjusting tire pressure. In road conditions, it can reduce tire wear, reduce fuel consumption, and reduce tire flexural deformation at high speeds, thereby reducing internal heat and reducing the risk of tire blowouts.

[0046] like Figure 2 As shown, in addition, the present invention also provides a tractor inflation and deflation method, based on a tractor inflation and deflation system described in any one of the above, the tractor inflation and deflation method includes: S1, when the tractor enters the road from the field, obtaining a first target air pressure input by a user; S2, according to the first target air pressure, controlling the control valve group to conduct the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S3, the multiple wheel side valves respectively fill the gas into multiple tires until the air pressure of the multiple tires reaches the first target air pressure; S4, when the tractor enters the field from the road, obtaining a second target air pressure input by a user; S5, according to the second target air pressure, controlling the control valve group to conduct the gas in the air source to multiple wheel side valves, so that the multiple wheel side valves are opened; S6, 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.

[0047] The beneficial effects of the technical solution of the present invention are as follows: in the case of inflation, when entering the road from the field, the tire needs to be inflated, at this time the driver touches the button of the display, the display transmits a 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. 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 (wheel side valve) opens, and the tire valve (wheel side valve) fills the air into the tire through the air pipe and the valve nozzle. In the case of deflation, when entering the field from the road, the tire needs to be deflated, at this time the driver touches the button of the display, the display transmits a 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. 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. Improve the driving stability and operating efficiency of agricultural tractors, reduce tire wear, and soil compaction. Agricultural tires adjust tire pressure to increase traction, reduce fuel consumption, and reduce soil compaction in field operations. In road conditions, it reduces tire wear, fuel consumption, and reduces tire flexural deformation at high speeds, thereby reducing internal heat and reducing the risk of tire blowouts.

[0048] Further, step S3 includes: S31, multiple wheel-side valves respectively inflate gas into multiple tires; S32, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S33, 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 S6 includes: S61, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S62, 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.

[0049] 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 deflation 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 deflation valve (slow deflation port) and open the quick deflation 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.

[0050] Furthermore, it also includes: S7, under the condition of tire pressure maintenance, 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; S8, the control valve group monitors the actual tire pressure of multiple tires through pressure sensors; S9, when the tractor tows an agricultural trailer, the controller obtains the tire pressure of the agricultural trailer or agricultural machinery through the ISOBUS connector; S10, the tire pressure of the agricultural trailer or agricultural machinery is displayed on the display; S11, the third target pressure input by the user is obtained; S12, according to the third target pressure, the control valve group is controlled to conduct the gas in the air source to the tires of the agricultural trailer or agricultural machinery until the tire pressure of the agricultural trailer or agricultural machinery reaches the third target pressure.

[0051] The beneficial effect of adopting the above further technical solution is: 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 gas source into the system, thereby opening the wheel side valve, and the wheel side valve gas is connected to the control valve group, so as to monitor the tire pressure. When the tractor tows an agricultural trailer, the tractor and the agricultural trailer or agricultural machinery will be connected to the trailer through the gas output connector, and the data signal will be connected to the agricultural trailer or agricultural machinery through ISOBUS. The information of the tire pressure of the agricultural trailer axle will be displayed on the display, and the adjustment signal can be output to the controller through the display to adjust the air pressure of the agricultural trailer or agricultural machinery through the control valve group.

[0052] The following will describe the three working conditions of inflation, deflation and tire pressure maintenance.

[0053] Inflation: When entering the road from the field, the tire needs to be inflated. At this time, the driver touches the button on the display, and the display transmits a 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. 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 (wheel side valve) opens, and the tire valve (wheel side valve) fills the tire with air through the air pipe and the valve nozzle. 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 cuts off the gas from the air source and opens the quick air release 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 in the front and rear axle seals (front axle seal and rear axle seal), and meet the requirements of increasing the durability of the front and rear axle seals.

[0054] In the case of deflation, when entering the field from the road, the tire needs to be deflated. At this time, the driver touches the button on the display, and the display transmits a signal 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. 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 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 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 in the front and rear axle seals to meet the requirements of increasing the durability of the front and rear axle seals.

[0055] 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.

[0056] When the tractor tows an agricultural trailer, the tractor and the agricultural trailer or agricultural machinery will be connected to the trailer through the gas output connector, and the data signal will be connected to the agricultural trailer or agricultural machinery through ISOBUS. The information of the tire pressure of the agricultural trailer axle will be displayed on the display, and the adjustment signal can be output to the controller through the display to adjust the air pressure of the agricultural trailer or agricultural machinery through the control valve group.

[0057] 1. The present invention adjusts the tire pressure through a display.

[0058] 2. The present invention can control modes such as inflation, deflation, and tire pressure monitoring.

[0059] 3. The sealed built-in type is adopted, so that the pipeline layout is more beautiful.

[0060] 4. The gas output connector can be connected to the trailer or agricultural machinery via ISOBUS to adjust the gas pressure of the corresponding trailer or agricultural machinery.

[0061] A tractor inflation and deflation system provided by an embodiment of the present invention can be a new type of agricultural automatic inflation and deflation system, which has three modes of tire inflation, deflation, and tire pressure maintenance. The pipeline layout is more beautiful through the internal sealing, and the agricultural trailer or agricultural machinery can be controlled through the gas output connector and ISOBUS interface. Agricultural tires can increase traction, reduce fuel consumption, and reduce soil compaction in field operations by adjusting tire pressure. In road conditions, tire wear is reduced, fuel consumption is reduced, and tire flexural deformation is reduced at high speeds, thereby reducing endogenous heat and reducing the risk of tire blowouts.

[0062] 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. A tractor inflation and deflation system, characterized in that: include: A control valve group, an air source, multiple wheel-side valves, multiple tires, a front axle and a rear axle, wherein the control valve group is connected to the air source and the multiple wheel-side valves through pipelines, the multiple wheel-side valves are connected to the multiple tires, and the multiple tires are installed on the front axle and the rear axle.

2. A tractor inflation and deflation system 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. A tractor inflation and deflation system 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. A tractor inflation and deflation system 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. A tractor inflation and deflation system according to claim 1, characterized in that: The control valve group is connected to a controller, and the controller is connected to a display.

6. A tractor inflation and deflation system according to claim 5, characterized in that: The controller is connected with an ISOBUS connector, and the control valve group is connected with a gas output connector.

7. A tractor, characterized in that: A tractor inflation and deflation system comprising any one of claims 1 to 6.

8. A method for charging and deflation of a tractor, characterized in that: Based on the tractor inflation and deflation system according to any one of claims 1 to 6 above, the tractor inflation and deflation method comprises: S1. When the tractor enters the road from the field, obtaining a first target air pressure input by a user; S2. According to the first target air pressure, the control valve group is controlled to conduct the gas in the air source to the plurality of wheel-side valves, so that the plurality of wheel-side valves are opened; S3, 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; S4. when the tractor enters the field from the road, obtaining a second target air pressure input by the user; S5. According to the second target air pressure, the control valve group is controlled to conduct the gas in the air source to the plurality of wheel-side valves, so that the plurality of wheel-side valves are opened; S6. 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.

9. A tractor inflation and deflation method according to claim 8, characterized in that: Step S3 includes: S31, multiple wheel side valves respectively inflate gas into multiple tires; S32, the control valve group monitors the actual tire pressure of multiple tires through the pressure sensor; S33, 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 S6 includes: S61, the control valve group monitors the actual tire pressure of multiple tires through the pressure sensor; S62. 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.

10. A tractor inflation and deflation method according to claim 8, characterized in that: Also includes: S7: In the case of tire pressure maintenance, 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; S8, the control valve group monitors the actual tire pressure of multiple tires through the pressure sensor; S9. When the tractor is pulling an agricultural trailer, the controller obtains the tire pressure of the agricultural trailer or agricultural machinery through the ISOBUS connector; S10, displaying the tire pressure of the agricultural trailer or agricultural machinery through a display; S11, obtaining a third target air pressure input by a user; S12. According to the third target air pressure, the control valve group is controlled to conduct the gas in the air source to the tires of the agricultural trailer or the agricultural machinery until the air pressure of the tires of the agricultural trailer or the agricultural machinery reaches the third target air pressure.

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