Hydraulic flow distribution method, device, engineering vehicle and storage medium

Abstract

The application relates to a hydraulic flow distribution method, device, engineering vehicle and storage medium, and relates to the technical field of engineering machinery. The hydraulic flow distribution method comprises the following steps: acquiring the working pressure of a first component oil cylinder, a first component handle action signal and a second component handle action signal in real time; obtaining a limiting coefficient according to the working pressure and the second component handle action signal; obtaining a first component actual control current according to the first component handle action signal and the limiting coefficient; and adjusting the opening area of a first component valve core according to the first component actual control current. The hydraulic flow distribution method, device, engineering vehicle and storage medium can improve the unreasonable flow distribution problem during composite action, and effectively improve the operation performance of the engineering vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, and in particular to a hydraulic flow distribution method and device, an engineering vehicle, and a storage medium. BACKGROUND

[0002] At present, in the excavator, when the boom handle and the stick handle are operated at the same time, the boom and the stick will realize a compound action. In the case of realizing the compound action of the boom and the stick, the flow in the hydraulic system will be supplied to the boom cylinder and the stick cylinder. In the prior art, when the flow is distributed to the boom cylinder and the stick cylinder, the flow distribution is unreasonable, which causes the boom and the stick to easily appear impact and jerk when the compound action is performed, and affects the operation performance of the excavator. SUMMARY

[0003] In order to solve the above technical problems, the embodiments of the application provide a hydraulic flow distribution method and device, an engineering vehicle, and a storage medium, which can improve the problem of unreasonable flow distribution when the compound action is performed, and effectively improve the operation performance of the engineering vehicle.

[0004] According to one aspect of the present application, a hydraulic flow distribution method is provided, comprising:

[0005] obtaining a working pressure of a first component cylinder, a first component handle action signal, and a second component handle action signal in real time; wherein the first component cylinder is used to drive a first component; the first component handle action signal is used to control the action of the first component; and the second component handle action signal is used to control the action of a second component;

[0006] obtaining a limiting coefficient according to the working pressure and the second component handle action signal; wherein the limiting coefficient represents the limiting degree of the flow entering the first component cylinder after the flow is preferentially supplied to a second component cylinder; the second component cylinder is used to drive the second component; and

[0007] obtaining a first component actual control current according to the first component handle action signal and the limiting coefficient; and

[0008] adjusting the opening area of a first component spool according to the first component actual control current; wherein the first component spool is used to adjust the flow entering the first component cylinder.

[0009] According to one aspect of the present application, the obtaining of the limiting coefficient according to the working pressure and the second component handle action signal comprises:

[0010] According to the working pressure and a preset corresponding relationship, a limit coefficient critical value is obtained; wherein the preset corresponding relationship represents a corresponding relationship between the working pressure and the limit coefficient critical value; and

[0011] According to the limit coefficient critical value and the second component handle action signal, the limit coefficient is obtained.

[0012] According to one aspect of the present application, the limit coefficient is obtained according to the limit coefficient critical value and the second component handle action signal, comprising:

[0013] According to the limit coefficient critical value, a corresponding relationship graph between the limit coefficient and the second component handle action signal is obtained; and

[0014] According to the corresponding relationship graph and the second component handle action signal, the limit coefficient is obtained.

[0015] According to one aspect of the present application, the first component actual control current is obtained according to the first component handle action signal and the limit coefficient, comprising:

[0016] According to the first component handle action signal, a first component original control current is obtained; and

[0017] According to the limit coefficient and the first component original control current, the first component actual control current is obtained.

[0018] According to one aspect of the present application, the first component actual control current is obtained according to the limit coefficient and the first component original control current, comprising:

[0019] The original starting current in the first component original control current is divided by the limit coefficient to obtain a transition starting current, and the original starting current is replaced by the transition starting current; and

[0020] The first component original control current after the original starting current is replaced by the transition starting current is multiplied by the limit coefficient to obtain the first component actual control current.

[0021] According to one aspect of the present application, the opening area of the first component spool is adjusted according to the first component actual control current, comprising:

[0022] The first component actual control current of the ramp signal is applied to the first component spool to adjust the opening area of the first component spool.

[0023] According to another aspect of the present application, a hydraulic flow distribution device is also provided, comprising:

[0024] The first obtaining module is configured to obtain, in real time, a working pressure of a first-component oil cylinder, a first-component handle action signal, and a second-component handle action signal; the first-component oil cylinder is used to drive a first component; the first-component handle action signal is used to control action of the first component; and the second-component handle action signal is used to control action of a second component.

[0025] The first calculating module is configured to obtain a limiting coefficient according to the working pressure and the second-component handle action signal; the limiting coefficient represents a limiting degree of flow into the first-component oil cylinder after flow to the second-component oil cylinder is preferentially supplied; and the second-component oil cylinder is used to drive the second component.

[0026] The second calculating module is configured to obtain a first-component actual control current according to the first-component handle action signal and the limiting coefficient.

[0027] The adjusting module is configured to adjust an opening area of a first-component spool according to the first-component actual control current; and the first-component spool is used to adjust flow into the first-component oil cylinder.

[0028] According to another aspect of the present application, an engineering vehicle is also provided, comprising:

[0029] A machine body;

[0030] The hydraulic flow distribution device as described above is arranged on the machine body.

[0031] According to another aspect of the present application, an engineering vehicle is also provided, comprising:

[0032] A machine body;

[0033] An electronic device arranged on the machine body, and configured to execute the hydraulic flow distribution method as described above.

[0034] According to another aspect of the present application, a storage medium is also provided, and the storage medium stores a computer program configured to execute the hydraulic flow distribution method as described above.

[0035] The hydraulic flow distribution method, device, engineering vehicle and storage medium provided by the embodiments of the present application can obtain the working pressure of the first component oil cylinder, the first component handle action signal and the second component handle action signal in real time, then obtain the limiting coefficient according to the working pressure and the second component handle action signal, then obtain the actual control current of the first component according to the first component handle action signal and the limiting coefficient, and then adjust the opening area of the first component valve core according to the actual control current of the first component. In this way, since the working pressure can reflect the current working state of the first component oil cylinder, and the second component handle action signal can reflect the hydraulic flow required to be preferentially supplied to the second component oil cylinder, the limiting coefficient obtained in real time according to the working pressure and the second component handle action signal can not only limit the flow entering the first component oil cylinder, but also make the working pressure of the first component oil cylinder in a better working interval, thereby improving the problem of impact and jerk when the first component oil cylinder drives the first component. In addition, since the working pressure and the second component handle action signal at different moments are obtained in real time, the limiting coefficient obtained is also updated in real time. In this way, the flow entering the first component oil cylinder can be more accurately limited through the limiting coefficient, so that the flow distribution in the composite action process of the first component and the second component is more reasonable, the composite action efficiency is effectively improved, and the overall operation performance of the engineering vehicle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the figures. The drawings provided in connection with the present application are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation of the present application. In the drawings, the same reference numerals represent the same components or steps throughout the figures.

[0037] Figure 1 A flowchart of a hydraulic flow distribution method provided for an exemplary embodiment of the present application.

[0038] Figure 2 A flowchart of obtaining a limiting coefficient according to a working pressure and a second component handle action signal provided for an exemplary embodiment of the present application.

[0039] Figure 3 A corresponding relationship diagram between a working pressure and a limiting coefficient critical value provided for an exemplary embodiment of the present application.

[0040] Figure 4 A flowchart of obtaining a limiting coefficient according to a limiting coefficient critical value and a second component handle action signal provided for an exemplary embodiment of the present application.

[0041] Figure 5A corresponding relationship diagram between the limit coefficient and the second component handle action signal is provided for an exemplary embodiment of the present application.

[0042] Figure 6 A flowchart diagram of obtaining the first component actual control current according to the first component handle action signal and the limit coefficient is provided for an exemplary embodiment of the present application.

[0043] Figure 7 A flowchart diagram of obtaining the first component actual control current according to the limit coefficient and the first component original control current is provided for an exemplary embodiment of the present application.

[0044] Figure 8 A corresponding relationship diagram between the first component actual control current and the first component handle action signal is provided for an exemplary embodiment of the present application.

[0045] Figure 9 A flowchart diagram of a hydraulic flow distribution method is provided for another exemplary embodiment of the present application.

[0046] Figure 10 A structural block diagram of a hydraulic flow distribution device is provided for an exemplary embodiment of the present application.

[0047] Figure 11 A structural block diagram of a hydraulic flow distribution device is provided for another exemplary embodiment of the present application.

[0048] Figure 12 A structural block diagram of an engineering vehicle is provided for an exemplary embodiment of the present application.

[0049] Figure 13 A structural block diagram of an engineering vehicle is provided for another exemplary embodiment of the present application.

[0050] Figure 14 A structural block diagram of an electronic device is provided for an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0051] Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part but not all of the embodiments of the present application. It should be understood that the present application is not limited to the described embodiments.

[0052] Figure 1 A flowchart diagram of a hydraulic flow distribution method is provided for an exemplary embodiment of the present application. As shown in Figure 1 the flowchart diagram, the hydraulic flow distribution method provided by the present application can include:

[0053] S310: Real-time acquisition of the working pressure of the first component cylinder, the action signal of the first component handle, and the action signal of the second component handle.

[0054] Specifically, the hydraulic cylinder of the first component can serve as the power source for the first component, driving it. The handle action signal of the first component is used to control the movement of the first component, and the handle action signal of the second component is used to control the movement of the second component.

[0055] In one embodiment, a pressure sensor can be provided in the inner cavity of the first component cylinder to detect the working pressure of the first component cylinder.

[0056] In one embodiment, when the hydraulic flow distribution method is applied to an excavator, the first component may include the stick, the second component may include the boom, and the working pressure of the first component cylinder can be understood as the pressure in the rodless chamber of the stick cylinder.

[0057] In one embodiment, when the hydraulic flow distribution method is applied to an excavator, the first component may include a bucket, the second component may include a stick, and the working pressure of the first component cylinder can be understood as the pressure in the rodless chamber of the bucket cylinder.

[0058] In one embodiment, the action signal of the first component handle can be generated by pressing a button on the first component handle, or by pulling or rotating the first component handle.

[0059] In one embodiment, the action signal of the second component handle can be generated by pressing a button on the second component handle, or by pulling or rotating the second component handle.

[0060] It should be understood that if the first component handle action signal and the second component handle action signal are obtained in the same time period, then it can be considered that the first component and the second component are performing a compound action during that time period.

[0061] In one embodiment, this hydraulic flow distribution method can also be applied to engineering vehicles such as cranes and pump trucks. When related first and second components perform combined actions, this hydraulic flow distribution method can be used to achieve a reasonable distribution of flow.

[0062] S320: The limiting coefficient is obtained based on the working pressure and the action signal of the second component handle.

[0063] Specifically, the second component cylinder is used to drive the second component. During the combined action of the first and second components, hydraulic flow is preferentially supplied to the second component cylinder, causing the second component to act first. Correspondingly, the hydraulic flow entering the first component cylinder is restricted.

[0064] It should be noted that this limiting factor can be understood as the degree of restriction on the flow rate entering the first component cylinder after the flow rate of the second component cylinder is given priority.

[0065] It should be understood that the working pressure can reflect the current working state of the first component cylinder, and the action signal of the second component handle can reflect the hydraulic flow that the second component cylinder needs to supply first. In this way, the limiting coefficient obtained in real time based on the working pressure and the action signal of the second component handle can not only limit the flow entering the first component cylinder, but also keep the working pressure of the first component cylinder in a better working range, effectively improving the problem of impact and jerking when the first component cylinder drives the first component.

[0066] In addition, in practical applications, since the working pressure and the action signal of the second component handle are acquired in real time at different times, the resulting limiting coefficient is also updated in real time. This allows for a more accurate restriction of the flow rate entering the first component cylinder, making the flow distribution during the combined action of the first and second components more reasonable, effectively improving the efficiency of the combined action, and enhancing the overall operational performance of the engineering vehicle.

[0067] S330: Based on the first component handle action signal and the limiting coefficient, obtain the actual control current of the first component.

[0068] S340: Adjust the opening area of ​​the valve core of the first component according to the actual control current of the first component.

[0069] Specifically, the first component handle action signal can reflect the original control current. By combining the first component handle action signal and the limiting coefficient, the limited actual control current of the first component can be obtained. Based on the actual control current of the first component, the opening area of ​​the first component valve core can be adjusted. Furthermore, since the first component valve core is used to regulate the flow rate entering the first component cylinder, adjusting the opening area of ​​the first component valve core can adjust the flow rate entering the first component cylinder to the limited flow rate.

[0070] The hydraulic flow distribution method provided in this application embodiment acquires the working pressure of the first component cylinder, the action signal of the first component handle, and the action signal of the second component handle in real time. Then, based on the working pressure and the action signal of the second component handle, a limiting coefficient is obtained. Next, based on the action signal of the first component handle and the limiting coefficient, the actual control current of the first component is obtained. Finally, based on the actual control current of the first component, the opening area of ​​the first component valve core is adjusted. Thus, since the working pressure reflects the current working state of the first component cylinder, and the action signal of the second component handle reflects the hydraulic flow that the second component cylinder needs to prioritize supplying, the hydraulic flow distribution method is adjusted based on the working pressure and the action signal of the second component handle. The real-time limiting coefficient not only restricts the flow rate entering the first component cylinder but also ensures that the working pressure of the first component cylinder is within an optimal working range, thus mitigating the impact and jerking issues that occur when the first component cylinder drives the first component. Furthermore, since the working pressure and the second component handle action signal are acquired in real time, the limiting coefficient is also updated in real time. This allows for more accurate restriction of the flow rate entering the first component cylinder, resulting in a more rational flow distribution during the combined action of the first and second components, effectively improving the efficiency of the combined action, and ultimately enhancing the overall operational performance of the engineering vehicle.

[0071] Figure 2 This is a schematic flowchart illustrating the process of obtaining a limiting coefficient based on working pressure and a second component handle actuation signal, provided as an exemplary embodiment of this application. Figure 2 As shown, step S320 may include:

[0072] S321: Based on the working pressure and the preset correspondence, the critical value of the limiting coefficient is obtained.

[0073] Specifically, the preset correspondence can be understood as the correspondence between working pressure and the critical value of the limiting coefficient. This preset correspondence can be obtained through experiments under a large number of different working conditions. After obtaining the working pressure, the critical value of the limiting coefficient can be obtained based on the working pressure and the preset correspondence.

[0074] Figure 3 A graph showing the correspondence between working pressure and critical limiting coefficient values ​​provided for an exemplary embodiment of this application. Figure 3 For example, when the working pressure is in the range of 0-150 bar, the critical value of the limiting factor is 60%. When the working pressure is in the range of 150-200 bar, the critical value of the limiting factor increases with the working pressure and gradually approaches 100%.

[0075] In one embodiment, the dimensions of the first and second components can be appropriately adjusted according to their types and sizes. Figure 3The slope of the inclined straight line is used to obtain an accurate correspondence between the working pressure and the critical value of the limiting coefficient.

[0076] S322: Obtain the limiting coefficient based on the critical value of the limiting coefficient and the action signal of the second component handle.

[0077] Specifically, after the limit coefficient threshold is determined, the correspondence between the second component handle action signal and the limit coefficient can also be determined (the specific determination process will be described in detail later). Based on the limit coefficient threshold and the second component handle action signal obtained at the current moment, the limit coefficient at the current moment can be obtained.

[0078] It should be understood that by adjusting the limit coefficient threshold value in real time based on the dynamic value of the working pressure, the limit coefficient can be adjusted in real time, thereby adjusting the flow rate entering the first component cylinder in real time, so that the first component can quickly restore the operating speed in compound actions and improve operating efficiency.

[0079] Figure 4 This is a schematic diagram illustrating a process for obtaining a limiting coefficient based on a limiting coefficient threshold value and a second component handle action signal, provided as an exemplary embodiment of this application. Figure 4 As shown, step S322 may include:

[0080] S3221: Based on the critical value of the limit coefficient, obtain the correspondence diagram between the limit coefficient and the action signal of the second component handle.

[0081] S3222: Obtain the limiting coefficient based on the correspondence diagram and the action signal of the second component handle.

[0082] Specifically, the total stroke of the second component handle varies, and the change of the action signal of the second component handle under different strokes is also different. Therefore, the correspondence between the limiting coefficient and the action signal of the second component handle will also be different.

[0083] Figure 5 A diagram showing the correspondence between limiting coefficients and the action signals of the second component handle, provided for an exemplary embodiment of this application. Figure 5 For example, when the second component handle's motion signal indicates that the displacement of the second component handle is within the range of 0-20% of the total stroke, the limiting coefficient is selected as 100%. After the critical value of the limiting coefficient is determined, the slope of the straight line corresponding to the limiting coefficient and the second component handle's motion signal can also be determined. When the second component handle's motion signal indicates that the displacement of the second component handle is within the range of 20%-100% of the total stroke, the limiting coefficient gradually approaches the aforementioned critical value of the limiting coefficient as the second component handle's motion signal changes.

[0084] Figure 6This is a schematic flowchart illustrating how the actual control current of the first component is obtained based on the handle action signal and a limiting coefficient, as provided in an exemplary embodiment of this application. Figure 6 As shown, step S330 may include:

[0085] S331: Obtain the original control current of the first component based on the action signal of the first component handle.

[0086] Specifically, in practical applications, the control signal controls the first component in the form of a control current. Therefore, after obtaining the first component handle action signal, the first component handle action signal can be converted into a control current. That is, the original control current of the first component can be obtained based on the first component handle action signal.

[0087] S332: Based on the limiting coefficient and the original control current of the first component, the actual control current of the first component is obtained.

[0088] It should be understood that if the first component's operation is directly controlled based on its original control current, the flow rate entering the first component's cylinder will be unrestricted, failing to achieve the function of preferentially supplying flow to the second component's cylinder, thus preventing the effective completion of the composite action. Therefore, to limit the flow rate entering the first component's cylinder, a limiting coefficient needs to be applied to the original control current of the first component to obtain its actual control current. This allows for accurate limitation of the flow rate entering the first component's cylinder during the control of the first component's operation based on its actual control current, facilitating the smooth completion of the composite action between the first and second components.

[0089] Figure 7 This is a schematic flowchart illustrating the process of obtaining the actual control current of a first component based on a limiting factor and the original control current of the first component, as provided in an exemplary embodiment of this application. Figure 7 As shown, step S332 may include:

[0090] S3321: Divide the original starting current in the original control current of the first component by the limiting coefficient to obtain the transition starting current, and replace the original starting current with the transition starting current.

[0091] S3322: The original control current of the first component after replacing the original starting current with the transition starting current is multiplied by the limiting coefficient to obtain the actual control current of the first component.

[0092] It should be noted that in practical applications, if the original control current of the first component is directly multiplied by the limiting coefficient after step S331, the starting current in the actual control current of the first component will be smaller, which will increase the dead zone between the control current and the first component handle action signal, thus reducing the operability of the engineering vehicle.

[0093] Specifically, regarding the dead zone range, it can be understood as the control current not changing when the first component handle's actuation signal changes within the dead zone range. For example, if before the dead zone range increases, the first component handle's actuation signal indicates that the displacement of the first component handle is 20% of the total stroke, then the initial current in the control current can be obtained to control the first component's actuation. However, after the dead zone range increases, when the first component handle's actuation signal indicates that the displacement of the first component handle is 20% of the total stroke, the obtained current cannot be used as the initial current to control the first component's actuation. In other words, an increase in the dead zone range will lead to a decrease in the accuracy of the first component handle's operation, reducing the overall operability of the engineering vehicle.

[0094] to this end, Figure 8 A diagram showing the correspondence between the actual control current of the first component and the actuation signal of the first component handle, provided as an exemplary embodiment of this application. (In conjunction with...) Figure 7 and Figure 8 After executing step S331, step S3321 can be executed accordingly. First, the original starting current in the original control current of the first component is divided by the limiting coefficient to obtain the transition starting current. Then, the original starting current in the original control current of the first component is replaced with the transition starting current. Then, step S3322 is executed. The original control current of the first component after replacing the original starting current with the transition starting current is multiplied by the limiting coefficient to obtain the actual control current of the first component. In this way, the actual starting current in the actual control current of the first component is the same as the original starting current in the original control current of the first component, so that the dead zone between the control current and the action signal of the first component handle is not increased. Moreover, the control current in the actual control current of the first component other than the actual starting current is multiplied by the limiting coefficient. In this way, when adjusting the opening area of ​​the valve core of the first component according to the actual control current of the first component, the flow rate entering the oil cylinder of the first component can be limited.

[0095] In other words, executing steps S3321 and S3322 can solve the problem of increased dead zone caused by flow restriction, while also ensuring that the original function of restricting the flow into the first component cylinder is effectively implemented.

[0096] Figure 9 A schematic flowchart of a hydraulic flow distribution method provided as another exemplary embodiment of this application. (See attached diagram.) Figure 9 As shown, step S340 may include:

[0097] S341: The actual control current of the first component is applied to the first component valve core with a ramp signal to adjust the opening area of ​​the first component valve core.

[0098] It should be understood that during the movement of the first component valve core, the actual control current of the first component, which applies a ramp signal to the first component valve core, can make the movement of the first component valve core smoother, thereby making the flow rate change into the first component cylinder more smooth and avoiding the problem of impact caused by sudden changes in the flow rate into the first component cylinder. In other words, executing step S341 can improve the problem of impact caused by sudden changes in flow rate when the first component is under flow restriction.

[0099] Figure 10 This is a structural block diagram of a hydraulic flow distribution device provided for an exemplary embodiment of this application. Figure 10 As shown, the hydraulic flow distribution device 500 provided in this application embodiment includes: a first acquisition module 510, configured to acquire in real time the working pressure of the first component cylinder, the first component handle action signal, and the second component handle action signal; wherein, the first component cylinder is used to drive the first component; the first component handle action signal is used to control the action of the first component; and the second component handle action signal is used to control the action of the second component; a first calculation module 520, configured to obtain a limiting coefficient based on the working pressure and the second component handle action signal; wherein, the limiting coefficient characterizes the degree of restriction on the flow entering the first component cylinder after the flow is preferentially supplied to the second component cylinder; the second component cylinder is used to drive the second component; and a second calculation module 530, configured to obtain the actual control current of the first component based on the first component handle action signal and the limiting coefficient; and an adjustment module 540, configured to adjust the opening area of ​​the first component valve core based on the actual control current of the first component; wherein, the first component valve core is used to regulate the flow entering the first component cylinder.

[0100] The hydraulic flow distribution device provided in this application embodiment acquires the working pressure of the first component cylinder, the action signal of the first component handle, and the action signal of the second component handle in real time. Then, based on the working pressure and the action signal of the second component handle, a limiting coefficient is obtained. Next, based on the action signal of the first component handle and the limiting coefficient, the actual control current of the first component is obtained. Finally, based on the actual control current of the first component, the opening area of ​​the first component valve core is adjusted. Thus, since the working pressure reflects the current working state of the first component cylinder, and the action signal of the second component handle reflects the hydraulic flow that the second component cylinder needs to prioritize supplying, the device adjusts the opening area of ​​the first component valve core according to the working pressure and the action signal of the second component handle. The real-time limiting coefficient not only restricts the flow rate entering the first component cylinder but also ensures that the working pressure of the first component cylinder is within an optimal working range, thus mitigating the impact and jerking issues that occur when the first component cylinder drives the first component. Furthermore, since the working pressure and the second component handle action signal are acquired in real time, the limiting coefficient is also updated in real time. This allows for more accurate restriction of the flow rate entering the first component cylinder, resulting in a more rational flow distribution during the combined action of the first and second components, effectively improving the efficiency of the combined action, and ultimately enhancing the overall operational performance of the engineering vehicle.

[0101] Figure 11 A structural block diagram of a hydraulic flow distribution device provided for another exemplary embodiment of this application. (See diagram below.) Figure 11 As shown, in one embodiment, the first calculation module 520 may include a third calculation module 521, configured to obtain a limit coefficient critical value based on the working pressure and a preset correspondence; wherein the preset correspondence represents the correspondence between the working pressure and the limit coefficient critical value; and a fourth calculation module 522, configured to obtain a limit coefficient based on the limit coefficient critical value and the action signal of the second component handle.

[0102] like Figure 11 As shown, in one embodiment, the fourth calculation module 522 may include a fifth calculation module 5221, configured to obtain a correspondence diagram between the restriction coefficient and the action signal of the second component handle based on the restriction coefficient threshold value; and a sixth calculation module 5222, configured to obtain the restriction coefficient based on the correspondence diagram and the action signal of the second component handle.

[0103] like Figure 11 As shown, in one embodiment, the second calculation module 530 may include a conversion module 531 configured to obtain the original control current of the first component based on the first component handle action signal; and a seventh calculation module 532 configured to obtain the actual control current of the first component based on the limiting coefficient and the original control current of the first component.

[0104] likeFigure 11 As shown, in one embodiment, the seventh calculation module 532 may include an eighth calculation module 5321, configured to divide the original starting current in the original control current of the first component by a limiting coefficient to obtain a transition starting current, and replace the original starting current with the transition starting current; and a ninth calculation module 5322, configured to multiply the original control current of the first component after replacing the original starting current with the transition starting current by a limiting coefficient to obtain the actual control current of the first component.

[0105] like Figure 11 As shown, in one embodiment, the adjustment module 540 can also be configured to apply a ramp signal to the first component valve core to adjust the opening area of ​​the first component valve core.

[0106] Figure 12 A structural block diagram of an engineering vehicle provided for an exemplary embodiment of this application. (See diagram below.) Figure 12 As shown, the engineering vehicle 700 provided in this application embodiment includes: a body 710; and a hydraulic flow distribution device 500 as described above, which is disposed on the body 710.

[0107] In one embodiment, the engineering vehicle 700 may include an excavator, a crane, a pump truck, etc.

[0108] The engineering vehicle 700 provided in this application embodiment includes a hydraulic flow distribution device 500 and possesses all the functions of the hydraulic flow distribution device 500. It acquires in real-time the working pressure of the first component cylinder, the action signal of the first component handle, and the action signal of the second component handle. Then, based on the working pressure and the action signal of the second component handle, it obtains a limiting coefficient. Next, based on the action signal of the first component handle and the limiting coefficient, it obtains the actual control current of the first component. Finally, based on the actual control current of the first component, it adjusts the opening area of ​​the first component valve core. Thus, since the working pressure reflects the current working state of the first component cylinder, and the action signal of the second component handle reflects the hydraulic flow that the second component cylinder needs to prioritize supplying, therefore… Based on the working pressure and the action signal of the second component handle, the limiting coefficient is obtained in real time. This not only ensures that the flow rate entering the first component cylinder is limited, but also keeps the working pressure of the first component cylinder within an optimal working range, thus improving the problems of impact and jerking when the first component cylinder drives the first component. Furthermore, since the working pressure and the action signal of the second component handle are acquired in real time, the limiting coefficient is also updated in real time. This allows for more accurate restriction of the flow rate entering the first component cylinder, making the flow distribution during the combined action of the first and second components more reasonable, effectively improving the efficiency of the combined action, and thus enhancing the overall operational performance of the engineering vehicle.

[0109] Figure 13 A structural block diagram of an engineering vehicle provided for another exemplary embodiment of this application. (See diagram below.) Figure 13 As shown, the engineering vehicle 800 provided in this application embodiment includes: a body 810; and an electronic device 820 disposed on the body 810. The electronic device 820 is configured to execute the hydraulic flow distribution method as described above.

[0110] In one embodiment, the engineering vehicle 800 may include an excavator, a crane, a pump truck, etc.

[0111] The engineering vehicle 800 provided in this embodiment acquires in real time the working pressure of the first component cylinder, the action signal of the first component handle, and the action signal of the second component handle. Then, based on the working pressure and the action signal of the second component handle, a limiting coefficient is obtained. Next, based on the action signal of the first component handle and the limiting coefficient, the actual control current of the first component is obtained. Finally, based on the actual control current of the first component, the opening area of ​​the first component valve core is adjusted. Thus, since the working pressure reflects the current working state of the first component cylinder, and the action signal of the second component handle reflects the hydraulic flow rate that the second component cylinder needs to prioritize supplying, the system can adjust the opening area of ​​the first component valve core according to the working pressure and the action signal of the second component handle. The real-time limiting coefficient not only ensures the flow rate entering the first component cylinder is restricted, but also keeps the working pressure of the first component cylinder within an optimal working range, thus improving the problems of impact and jerking when the first component cylinder drives the first component. Furthermore, since the working pressure and the second component handle action signal are acquired in real time, the limiting coefficient is also updated in real time. This allows for more accurate restriction of the flow rate entering the first component cylinder, resulting in a more reasonable flow distribution during the combined action of the first and second components, effectively improving the efficiency of the combined action, and thereby enhancing the overall operational performance of the engineering vehicle.

[0112] Figure 14 This is a structural block diagram of an electronic device provided as an exemplary embodiment of this application. (See diagram below.) Figure 14 As shown, the electronic device 820 can be either or both of the first device and the second device, or a standalone device independent of them, which can communicate with the first device and the second device to receive the acquired input signals from them.

[0113] like Figure 14 As shown, the electronic device 820 includes one or more processors 821 and memory 822.

[0114] The processor 821 may be a central processing unit (CPU) or other form of processing unit with data processing and / or instruction execution capabilities, and may control other components in the electronic device 820 to perform desired functions.

[0115] The memory 822 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 821 may execute the program instructions to implement the control methods and / or other desired functions of the various embodiments of this application described above. Various contents such as input signals, signal components, and noise components may also be stored in the computer-readable storage medium.

[0116] In one example, the electronic device 820 may also include an input device 823 and an output device 824, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0117] When the controller is a standalone device, the input device 823 can be a communication network connector for receiving the acquired input signals from the first device and the second device.

[0118] In addition, the input device 823 may also include, for example, a keyboard, a mouse, etc.

[0119] The output device 824 can output various information to the outside, including determined distance information, direction information, etc. The output device 824 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0120] Of course, for the sake of simplicity, Figure 14 Only some of the components of the electronic device 820 relevant to this application are shown in this illustration; components such as buses, input / output interfaces, etc., are omitted. In addition, the electronic device 820 may include any other suitable components depending on the specific application.

[0121] The computer program product can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0122] The computer-readable storage medium may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0123] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0124] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0125] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0126] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0127] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A hydraulic flow distribution method, characterized in that, include: The working pressure of the first component cylinder, the action signal of the first component handle, and the action signal of the second component handle are acquired in real time; wherein, the first component cylinder is used to drive the first component; the action signal of the first component handle is used to control the action of the first component; and the action signal of the second component handle is used to control the action of the second component. A limiting coefficient is obtained based on the working pressure and the action signal of the second component handle; wherein, the limiting coefficient represents the degree of restriction on the flow rate entering the first component cylinder after the flow rate is preferentially supplied to the second component cylinder; the second component cylinder is used to drive the second component; and Based on the first component's handle action signal and the limiting coefficient, the actual control current of the first component is obtained; and The opening area of ​​the valve core of the first component is adjusted according to the actual control current of the first component; wherein, the valve core of the first component is used to regulate the flow rate entering the oil cylinder of the first component. The step of obtaining the limiting coefficient based on the working pressure and the action signal of the second component handle includes: Based on the working pressure and the preset correspondence, a limiting coefficient critical value is obtained; wherein, the preset correspondence characterizes the correspondence between the working pressure and the limiting coefficient critical value; and The limiting coefficient is obtained based on the critical value of the limiting coefficient and the action signal of the second component handle.

2. The hydraulic flow distribution method according to claim 1, characterized in that, The process of obtaining the limiting coefficient based on the limiting coefficient threshold and the action signal of the second component handle includes: Based on the threshold value of the limiting coefficient, a correspondence diagram between the limiting coefficient and the action signal of the second component handle is obtained; and The limiting coefficient is obtained based on the correspondence diagram and the action signal of the second component handle.

3. The hydraulic flow distribution method according to claim 1, characterized in that, The step of obtaining the actual control current of the first component based on the first component handle action signal and the limiting coefficient includes: Based on the handle action signal of the first component, the original control current of the first component is obtained; and The actual control current of the first component is obtained based on the limiting coefficient and the original control current of the first component.

4. The hydraulic flow distribution method according to claim 3, characterized in that, The step of obtaining the actual control current of the first component based on the limiting coefficient and the original control current of the first component includes: Divide the original starting current in the original control current of the first component by the limiting coefficient to obtain the transition starting current, and replace the original starting current with the transition starting current; and The original control current of the first component after replacing the original starting current with the transition starting current is multiplied by the limiting coefficient to obtain the actual control current of the first component.

5. The hydraulic flow distribution method according to claim 1, characterized in that, The step of adjusting the opening area of ​​the valve core of the first component according to the actual control current of the first component includes: The actual control current of the first component is applied to the valve core of the first component by applying a ramp signal to adjust the opening area of ​​the valve core of the first component.

6. A hydraulic flow distribution device, characterized in that, include: The first acquisition module is configured to acquire in real time the working pressure of the first component cylinder, the action signal of the first component handle, and the action signal of the second component handle; wherein, the first component cylinder is used to drive the first component; the action signal of the first component handle is used to control the action of the first component; and the action signal of the second component handle is used to control the action of the second component. The first calculation module is configured to obtain a limiting coefficient based on the working pressure and the action signal of the second component handle; wherein the limiting coefficient represents the degree of restriction on the flow rate entering the first component cylinder after the flow rate is preferentially supplied to the second component cylinder; the second component cylinder is used to drive the second component; and The second calculation module is configured to obtain the actual control current of the first component based on the handle action signal of the first component and the limiting coefficient; and The adjustment module is configured to adjust the opening area of ​​the valve core of the first component according to the actual control current of the first component; wherein the valve core of the first component is used to regulate the flow rate entering the oil cylinder of the first component. The first calculation module includes: The third calculation module is configured to obtain a limit coefficient critical value based on the working pressure and a preset correspondence; wherein the preset correspondence represents the correspondence between the working pressure and the limit coefficient critical value. The fourth calculation module is configured to obtain the limiting coefficient based on the limiting coefficient threshold value and the action signal of the second component handle.

7. An engineering vehicle, characterized in that, include: Organism; The hydraulic flow distribution device as described in claim 6 is disposed on the machine body.

8. An engineering vehicle, characterized in that, include: Organism; An electronic device is disposed on the body, the electronic device being configured to perform the hydraulic flow distribution method as described in any one of claims 1 to 5.

9. A storage medium storing a computer program, characterized in that, The computer program is configured to perform the hydraulic flow distribution method as described in any one of claims 1 to 5.

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