Wheeled work machinery and its drive control methods and drive control systems

Abstract

This invention belongs to the field of engineering machinery technology, specifically relating to a drive control method, a drive control system, and the wheeled work machinery itself. The drive control method for wheeled work machinery includes: acquiring pressure state parameters of the rear-wheel drive mechanism of the wheeled work machinery; determining the driving conditions of the wheeled work machinery based on the pressure state parameters; and controlling the output pressure of the front-wheel drive mechanism of the wheeled work machinery according to the driving conditions. Through the technical solution of this invention, the traditional drive method is improved, the power distribution between the rear and front wheels is optimized, and the driving force of the front wheels is adjusted and controlled according to different driving conditions of the wheeled work machinery to fully utilize the driving role of the front wheels. This helps prevent rear wheel slippage, ensures the continuity of wheeled work machinery operation, improves construction efficiency, reduces energy consumption, and alleviates front wheel wear.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to a drive control method for wheeled work machinery, a drive control system, and wheeled work machinery. Background Technology

[0002] Currently, wheeled pavers are one of the most common types of wheeled construction machinery, characterized by their flexibility in construction and fast relocation speed, and are increasingly widely used in road construction. However, compared to tracked pavers, wheeled pavers have less traction between their tires and the ground, making them prone to slippage during construction. Therefore, most wheeled pavers have added a front-wheel drive system to their rear-wheel drive configuration to increase driving force and prevent slippage.

[0003] However, existing wheeled pavers and other wheeled construction machinery often employ drive systems that activate front-wheel drive only after the rear wheels have slipped, or that consistently set the front-wheel drive speed higher than the rear-wheel drive speed to increase front-wheel drive force and propel the vehicle forward. The former method is reactive; in practical applications, once the rear wheels slip, this system is constrained by site conditions and road conditions, making it difficult to fully utilize front-wheel drive force and achieve the desired anti-skid effect. The latter method, on the other hand, has an unreasonable force distribution, increasing energy consumption and accelerating front wheel wear. Furthermore, rear-wheel slippage affects the continuity of operations, thus impacting the construction efficiency of the wheeled construction machinery. Summary of the Invention

[0004] In view of this, in order to improve at least one of the above-mentioned problems existing in the prior art, the present invention provides a drive control method for wheeled work machinery, a drive control system, and wheeled work machinery.

[0005] A first aspect of the present invention provides a drive control method for wheeled work machinery, comprising:

[0006] Step S110: Obtain the pressure state parameters of the rear wheel drive mechanism of the wheeled work machinery;

[0007] Step S200: Determine the operating conditions of the wheeled work machinery based on the pressure state parameters;

[0008] Step S300: Control the output pressure of the front wheel drive mechanism of the wheeled work machinery according to the driving conditions; wherein, the pressure state parameters include the first pressure of the rear wheel drive mechanism.

[0009] The beneficial effects of the above-mentioned technical solution of the present invention are reflected in:

[0010] The drive mechanism of the rear and front wheels of the wheeled work machinery has been improved, making the power distribution between the rear and front wheels more reasonable. By increasing the driving force of the front wheels before the rear wheels slip, both the rear and front wheels can be used as drive wheels simultaneously. This increases the adhesion between the tires and the road surface, as well as the overall driving force of the wheeled work machinery, thereby effectively preventing rear wheel slippage, ensuring the continuity of operation of the wheeled work machinery, and improving construction efficiency. At the same time, it can also make full use of the driving role of the front wheels, which helps to reduce energy consumption and alleviate wear on the front wheels.

[0011] It should be noted that the wheeled work machinery described in this invention includes, but is not limited to, wheeled pavers, and may also be other work machinery with front and rear wheels, such as dump trucks.

[0012] In one feasible implementation, step S200: determining the operating conditions of the wheeled work machinery based on pressure state parameters, including:

[0013] Step S211: Determine whether the first pressure is greater than or equal to the first pressure threshold, and generate the first determination result;

[0014] If the first judgment result is yes, execute step S212: determine the driving condition as the first condition;

[0015] If the first judgment result is negative, proceed to step S213: determine whether the first pressure is less than or equal to the second pressure threshold, and generate the second judgment result;

[0016] If the second judgment result is yes, execute step S214: determine the driving condition as the second condition;

[0017] If the second judgment result is negative, proceed to step S215: determine the driving condition as the third condition;

[0018] The first pressure threshold is greater than the second pressure threshold.

[0019] In one feasible implementation, step S300: controlling the output pressure of the front-wheel drive mechanism according to the driving conditions includes:

[0020] When the driving condition is the first condition, execute step S310: control the front wheel drive mechanism to work with the first target pressure;

[0021] When the wheeled work machine is in the second working condition, execute step S320: control the front wheel drive mechanism to work at the second target pressure;

[0022] When the wheeled work machine is in the third working condition, execute step S330: control the front wheel drive mechanism to work at the current pressure;

[0023] The first target pressure is greater than the second target pressure.

[0024] In one feasible implementation, the first target pressure is the maximum output pressure of the front wheel drive mechanism; the second target pressure is within a first range, and the maximum value of the first range is less than the first target pressure.

[0025] In one feasible implementation, step S320: controlling the front wheel drive mechanism to operate at a second target pressure includes:

[0026] Step S321: Obtain the second pressure of the front wheel drive mechanism;

[0027] Step S322: Determine whether the second pressure is within the first range, and generate a third judgment result;

[0028] If the third judgment result is yes, execute step S322 again;

[0029] If the third judgment result is negative, proceed to step S323: adjust the second pressure to the second target pressure.

[0030] In one feasible implementation, the second target pressure is within a second range; wherein the second range is within the first range.

[0031] In one feasible implementation, the output pressure of the front-wheel drive mechanism is controlled by adjusting the operating current of the multi-way valve of the front-wheel drive mechanism.

[0032] Furthermore, when adjusting the operating current of the multi-way valve, the adjustment amount of the operating current of the multi-way valve each time is within the first current adjustment range.

[0033] A second aspect of the present invention also provides a drive control system, comprising: a rear-wheel drive mechanism; a front-wheel drive mechanism; a rear-wheel detection component for detecting pressure state parameters of the rear-wheel drive mechanism; a front-wheel detection component for detecting the output pressure of the front-wheel drive mechanism; and a controller communicatively connected to the rear-wheel drive mechanism, the front-wheel drive mechanism, the rear-wheel detection component, and the front-wheel detection component to control the operation of the rear-wheel drive mechanism and the front-wheel drive mechanism, and to implement the wheeled work machinery drive control method of any one of the first aspects. The pressure state parameters include, but are not limited to, the first pressure of the rear-wheel drive mechanism.

[0034] In one feasible implementation, the rear-wheel drive mechanism includes: a rear-wheel drive pump, the input end of which is adapted to be connected to the power system of the wheeled work machinery; and a rear-wheel drive motor, which is connected to the rear-wheel drive pump via a hydraulic line, and the output end of which is connected to the rear wheel drive.

[0035] The front-wheel drive mechanism includes: a front-wheel drive pump, the input end of which is adapted to be connected to the power system transmission; a front-wheel drive motor, the output end of which is connected to the front wheel drive; and a front-wheel multi-way valve, the different valve ports of which are respectively connected to the front-wheel drive pump and the front-wheel drive motor through hydraulic lines to control the amount of oil supplied by the front-wheel drive pump to the front-wheel drive motor.

[0036] The rear wheel detection assembly includes: a rear wheel pressure sensor, located in the hydraulic line between the rear wheel drive motor and the rear wheel drive pump;

[0037] The front wheel detection assembly includes a front wheel pressure sensor, located in the hydraulic line between the front wheel drive motor and the front wheel multi-way valve.

[0038] A third aspect of the present invention also provides a wheeled work machine, comprising: a vehicle body; a running mechanism connected to the vehicle body, the running mechanism including rear wheels and front wheels; and a drive control system as described in any of the second aspects above, disposed on the vehicle body, wherein the rear wheel drive mechanism is connected to the rear wheel drive mechanism and the front wheel drive mechanism is connected to the front wheel drive mechanism.

[0039] A fourth aspect of the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the wheeled work machinery drive control method as described in any of the first aspects above.

[0040] A fifth aspect of the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the wheeled work machinery drive control method as described in any of the first aspects above. Attached Figure Description

[0041] Figure 1 The diagram shown is a flowchart illustrating a drive control method for wheeled work machinery according to an embodiment of the present invention.

[0042] Figure 2 The diagram shown is a flowchart illustrating a drive control method for wheeled work machinery according to an embodiment of the present invention.

[0043] Figure 3 The diagram shown is a flowchart illustrating a drive control method for wheeled work machinery according to an embodiment of the present invention.

[0044] Figure 4 The diagram shown is a flowchart illustrating a drive control method for wheeled work machinery according to an embodiment of the present invention.

[0045] Figure 5 The diagram shown is a flowchart illustrating a drive control method for wheeled work machinery according to an embodiment of the present invention.

[0046] Figure 6 The diagram shown is a schematic block diagram of a drive control system provided in one embodiment of the present invention.

[0047] Figure 7 The diagram shown is a schematic diagram of a drive control system in an assembled state according to an embodiment of the present invention.

[0048] Figure 8 The diagram shown is a schematic block diagram of a wheeled work machine according to an embodiment of the present invention. Detailed Implementation

[0049] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, top, bottom, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0050] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The following provides some embodiments of the wheeled work machinery drive control method, drive control system, and wheeled work machinery in the technical solution of the present invention.

[0053] The wheeled work machinery described in the following embodiments of the present invention includes, but is not limited to, wheeled pavers, and may also be other work machinery with front-wheel drive and rear-wheel drive mechanisms, such as dump trucks.

[0054] In an embodiment of the first aspect of the present invention, a drive control method for wheeled work machinery is provided, such as... Figure 1 As shown, the drive control method for wheeled work machinery includes:

[0055] Step S110: Obtain the pressure state parameters of the rear wheel drive mechanism of the wheeled work machinery;

[0056] Step S200: Determine the operating conditions of the wheeled work machinery based on the pressure state parameters;

[0057] Step S300: Control the output pressure of the front wheel drive mechanism of the wheeled work machinery according to the driving conditions;

[0058] The pressure state parameters include the first pressure of the rear-wheel drive mechanism. In the wheeled work machinery drive control method of this embodiment, through steps S110 to S200, the driving force output state of the rear wheels is first determined based on the pressure state parameters of the rear-wheel drive mechanism, thereby determining the current driving condition of the wheeled work machinery; then, through step S300, corresponding control operations are performed on the front-wheel drive mechanism of the wheeled work machinery according to the specific driving condition of the wheeled work machinery, so as to drive the front wheels to operate with corresponding pressure, so as to match the driving force of the front wheels with the driving force of the rear wheels, and realize the rational distribution of driving force. The pressure state parameters include the first pressure of the rear-wheel drive mechanism, that is, the output pressure value of the rear-wheel drive mechanism. Of course, the pressure state parameters may also include other parameters or indicators related to the output pressure of the rear-wheel drive mechanism, such as pressure change trend, pressure change value, etc.

[0059] For example, when a wheeled work machine is in normal operating condition, the pressure of the rear wheels is within the normal range. At this time, the wheeled work machine can be mainly driven by the rear wheels, and the front wheels can be controlled to operate with a smaller pressure. When the pressure of the rear wheels exceeds the normal range, the possibility of the rear wheels slipping increases. At this time, the front wheels can be controlled to operate with a larger pressure to increase the driving force of the front wheels and the adhesion of the tires, so as to drive the wheeled work machine to drive normally. At the same time, the load on the rear wheels is reduced, which helps to prevent the rear wheels from slipping.

[0060] It should be noted that the wheeled work machinery drive control method in this embodiment can be applied to wheeled work machinery with rear-wheel drive and front-wheel drive mechanisms, so as to perform drive control on the rear wheels and front wheels of the wheeled work machinery respectively. Similar to common wheeled work machinery, the wheeled work machinery in this embodiment uses the rear wheels as the main drive wheels and the front wheels as the auxiliary drive wheels.

[0061] The drive control method for wheeled construction machinery in this embodiment improves the drive mode of the rear and front wheels. Based on different operating conditions, the pressure of the front wheel drive mechanism is adjusted to make the power distribution between the rear and front wheels more reasonable. Specifically, the driving force of the front wheels can be adjusted before the rear wheels slip, allowing both the rear and front wheels to act as drive wheels simultaneously. This increases the adhesion between the tires and the road surface, as well as the overall driving force of the wheeled construction machinery, effectively preventing rear wheel slippage, ensuring the continuity of operation, and improving construction efficiency. Simultaneously, it fully utilizes the driving effect of the front wheels, which helps reduce energy consumption and alleviate front wheel wear.

[0062] One embodiment of the present invention provides a drive control method for wheeled work machinery. For example... Figure 2 As shown, the drive control method for wheeled work machinery includes:

[0063] Step S110: Obtain the pressure state parameters of the rear wheel drive mechanism of the wheeled work machinery;

[0064] Step S211: Determine whether the first pressure is greater than or equal to the first pressure threshold, and generate the first determination result;

[0065] If the first judgment result is yes, execute step S212: determine the driving condition as the first condition;

[0066] If the first judgment result is negative, proceed to step S213: determine whether the first pressure is less than or equal to the second pressure threshold, and generate the second judgment result;

[0067] If the second judgment result is yes, execute step S214: determine the driving condition as the second condition;

[0068] If the second judgment result is negative, proceed to step S215: determine the driving condition as the third condition;

[0069] Step S300: Control the output pressure of the front wheel drive mechanism of the wheeled work machinery according to the driving conditions.

[0070] Among them, the pressure state parameters include the first pressure of the rear wheel drive mechanism, and the first pressure threshold is greater than the second pressure threshold.

[0071] In this embodiment, step S200 is further improved based on the above embodiment. Three pressure ranges are divided using a first pressure threshold and a second pressure threshold as critical values, and the first pressure threshold represents the warning value when the rear wheel is close to slipping. Correspondingly, the wheeled work machinery has three driving conditions. Through steps S211 and S213, the relationship between the first pressure and the first and second pressure thresholds is compared, and then through steps S212, S214, and S215, the driving condition of the wheeled work machinery is determined based on the pressure range where the first pressure is located.

[0072] The first working condition corresponds to a first pressure greater than a first pressure threshold, indicating that the first pressure of the rear-wheel drive mechanism has exceeded the warning value, and if the pressure continues to increase, the rear wheels may slip. The second working condition corresponds to a first pressure less than or equal to a second pressure threshold, indicating that the first pressure of the rear-wheel drive mechanism is within the normal pressure range, and the possibility of rear wheel slippage is small. At this time, the wheeled construction machinery still uses the rear wheels as the main drive wheels, and the front wheels output a small driving force. The third working condition is a transitional working condition, corresponding to the transition range between the first pressure threshold and the second pressure threshold. At this time, there are two different pressure change states: In the first case, the first pressure increases from a pressure value less than or equal to the second pressure threshold to a pressure value greater than the second pressure threshold, that is, the first pressure enters the transition range in an upward state; In the second case, the first pressure decreases from a pressure value greater than the first pressure threshold to a pressure value less than or equal to the first pressure threshold, that is, the first pressure enters the transition range in a downward state. In step S300, different control operations are performed on the front wheel drive mechanism for the three working conditions mentioned above. For example, the output pressure of the front wheel drive mechanism is increased in the first working condition, the output pressure of the front wheel drive mechanism is decreased in the second working condition, and the output pressure of the front wheel drive mechanism is maintained in the third working condition. This achieves dynamic adjustment of the pressure between the front and rear wheels, which is beneficial to optimize the distribution of driving force, thereby improving driving efficiency and preventing rear wheel slippage.

[0073] The upward state includes both a continuous upward state and an overall upward trend, while the downward state includes both a continuous downward state and an overall downward trend. In other words, fluctuations are allowed during the change process.

[0074] Specifically, the first pressure threshold can be 200 bar to 230 bar, preferably 200 bar; the second pressure threshold can be 150 bar to 160 bar, preferably 150 bar.

[0075] One embodiment of the present invention provides a drive control method for wheeled work machinery, such as... Figure 3 As shown, the drive control method for wheeled work machinery includes:

[0076] Step S110: Obtain the pressure state parameters of the rear wheel drive mechanism of the wheeled work machinery;

[0077] Step S211: Determine whether the first pressure is greater than or equal to the first pressure threshold, and generate the first determination result;

[0078] If the first judgment result is yes, execute step S212: determine the driving condition as the first condition;

[0079] If the first judgment result is negative, proceed to step S213: determine whether the first pressure is less than or equal to the second pressure threshold, and generate the second judgment result;

[0080] If the second judgment result is yes, execute step S214: determine the driving condition as the second condition;

[0081] If the second judgment result is negative, proceed to step S215: determine the driving condition as the third condition;

[0082] When the driving condition is the first condition, execute step S310: control the front wheel drive mechanism to work with the first target pressure;

[0083] When the driving condition is the second condition, execute step S320: control the front wheel drive mechanism to work with the second target pressure;

[0084] When the driving condition is the third condition, execute step S330: control the front wheel drive mechanism to work at the current output pressure.

[0085] The pressure state parameters include the first pressure of the rear wheel drive mechanism, the first pressure threshold being greater than the second pressure threshold, and the first target pressure being greater than the second target pressure.

[0086] In this embodiment, step S300 is further improved based on the above embodiment. Different control measures are adopted for the front-wheel drive mechanism according to different operating conditions of the wheeled work machinery. Specifically, when the wheeled work machinery is in the first operating condition, the pressure of the rear wheels is already higher than the warning value (first pressure threshold). At this time, through step S310, the front-wheel drive mechanism is controlled to increase the working pressure and operate at the first target pressure, so that the driving force of the front wheels can be fully utilized, increasing the proportion of driving force of the front wheels, and driving the wheeled work machinery together with the rear wheels, thereby sharing the driving force demand of the wheeled work machinery on the rear wheels, reducing the pressure of the rear wheels, and preventing the rear wheels from slipping. When the wheeled work machinery is in the second operating condition, the pressure of the rear wheels is within the normal range. At this time, the rear wheels are used as the main driving force, and the front wheels only output a small driving force. Through step S320, the front-wheel drive mechanism is controlled to adjust the working pressure and operate at the second target pressure. While ensuring the normal operation of the wheeled work machinery, energy can be saved and energy consumption reduced.

[0087] When the wheeled work machinery is in the third working condition, the first pressure enters the transition range. If the first pressure increases from a pressure value less than or equal to the second pressure threshold to a pressure value greater than the second pressure threshold while in an ascending state, it indicates that the driving condition has changed from the second working condition to the third working condition. The wheeled work machinery was in the second working condition before this, for example, when the wheeled work machinery just entered the driving state. The current output pressure of the front wheel drive mechanism should be at a low pressure value, such as the second target pressure. At this time, the pressure of the rear wheels is still within the normal range, and the pressure of the front wheels is also within an acceptable low pressure range. At this time, through step S330, no pressure adjustment operation is performed on the front wheel drive mechanism so that the front wheel drive mechanism works at the current output pressure, and the wheeled work machinery is still mainly driven by the rear wheels. If the first pressure decreases from a value greater than the first pressure threshold to less than the first pressure threshold during the decreasing state, it indicates that the driving condition has changed from the first condition to the third condition. The wheeled work machinery was previously in the first condition, for example, the wheeled work machinery was already in the construction operation state, and the current output pressure of the front wheel drive mechanism should be at a relatively high pressure value, such as the first target pressure. At this time, although the pressure of the rear wheel is within the normal range, it is close to the upper limit of the normal range, and the pressure state is still unstable and may fluctuate. That is, the first pressure may increase to a state greater than the first pressure threshold. Through step S330, the output pressure of the front wheel drive mechanism is not adjusted temporarily, so that the front wheel still works at a relatively high first target pressure. This can reduce the frequency of pressure adjustment of the front wheel drive mechanism and help ensure the stability and continuity of the wheeled work machinery's construction operation.

[0088] It is understandable that the rear-wheel drive and front-wheel drive mechanisms of wheeled work machinery typically use hydraulic systems for drive control. Frequent pressure adjustments are detrimental to the stable operation of the hydraulic system, which may in turn affect the normal construction operations of the wheeled work machinery. The wheeled work machinery drive control method in this embodiment effectively alleviates the above-mentioned problems by setting a transitional third working condition.

[0089] One embodiment of the present invention provides a drive control method for wheeled work machinery, such as... Figure 4 As shown, the drive control method for wheeled work machinery includes:

[0090] Step S110: Obtain the pressure state parameters of the rear wheel drive mechanism of the wheeled work machinery;

[0091] Step S221: Determine whether the first pressure is in an upward or downward state based on the pressure change trend;

[0092] When the first pressure is in an upward state, execute step S222: determine whether the first pressure is greater than the third pressure threshold, and generate the third judgment result;

[0093] If the third judgment result is yes, execute step S223: determine the driving condition as the first condition;

[0094] If the third judgment result is negative, proceed to step S224: determine the driving condition as the second condition;

[0095] When the first pressure is in a decreasing state, execute step S225: determine whether the first pressure is less than or equal to the fourth pressure threshold, and generate the fourth judgment result;

[0096] If the fourth judgment result is yes, execute step S224: determine the driving condition as the second condition;

[0097] If the fourth judgment result is negative, proceed to step S226: determine whether the first pressure is greater than the third pressure threshold, and generate the fifth judgment result;

[0098] If the fifth judgment result is yes, execute step S223: determine the driving condition as the first condition;

[0099] If the fifth judgment result is negative, proceed to step S227: determine the driving condition as the third condition;

[0100] When the driving condition is the first condition, execute step S310: control the front wheel drive mechanism to work with the first target pressure;

[0101] When the driving condition is the second condition, execute step S320: control the front wheel drive mechanism to work with the second target pressure;

[0102] When the driving condition is the third condition, execute step S330: control the front wheel drive mechanism to work at the current output pressure.

[0103] Among them, the pressure state parameters include the first pressure and pressure change trend of the rear wheel drive mechanism, the third pressure threshold being greater than the fourth pressure threshold, and the first target pressure being greater than the second target pressure.

[0104] In this embodiment, step S200 is further improved based on the above embodiment. First, in step S221, the change state of the first pressure is determined according to the pressure change trend, that is, whether the first pressure is in an increasing state or a decreasing state. This allows for different judgment criteria to be applied to the first pressure when determining the driving conditions based on different pressure change trends, thereby enabling more flexible control operations. The third pressure threshold is used to represent the warning value when the rear wheels are close to slipping.

[0105] When the first pressure is increasing, the system is divided into two intervals, corresponding to the first and second operating conditions, with the third pressure threshold as the critical value. In step S221, the first pressure of the rear-wheel drive mechanism is compared with the third pressure threshold to determine if the rear wheel pressure is close to slippage. If the first pressure is greater than the third pressure threshold, it indicates that the pressure of the rear-wheel drive mechanism has exceeded the warning value. If the pressure continues to increase, the rear wheel may slip. In step S223, the operating condition of the wheeled work machinery is marked as the first operating condition, so that the pressure of the front-wheel drive mechanism can be adjusted according to the rear wheel pressure condition to optimize the driving force distribution between the front and rear wheels and prevent rear wheel slippage. If the first pressure is less than or equal to the third pressure threshold, it indicates that the rear wheel is within the normal pressure range, and the possibility of slippage is low. In this case, in step S224, the operating condition is marked as the second operating condition. The wheeled work machinery continues to use the rear wheels as the main drive wheels, with the front wheels outputting a smaller driving force.

[0106] When the first pressure is decreasing, the system is divided into three intervals, corresponding to the first working condition, the second working condition, and the third working condition, with the third and fourth pressure thresholds as the critical values ​​(the fourth pressure threshold is less than the third pressure threshold). The interval between the third and fourth pressure thresholds is a transition interval, corresponding to the third working condition. Further, in step S225, the first pressure is compared with the fourth pressure threshold. If the first pressure is less than or equal to the fourth pressure threshold, step S224 is executed, marking the wheeled work machine's driving condition as the second working condition. Otherwise, step S226 is executed, further comparing the first pressure with the third pressure threshold. If the first pressure is greater than the third pressure threshold, step S223 is executed, marking the driving condition as the first working condition. If the first pressure is less than the third pressure threshold, step S227 marks the driving condition as the third working condition.

[0107] Furthermore, based on the pressure conditions of the rear wheels under the first, second, and third working conditions, the front wheel drive mechanism is adjusted accordingly. Through steps S310, S320, and S330, the front wheel drive mechanism is controlled to work with corresponding pressure so that the front wheels output corresponding driving force. Thus, different driving force distribution schemes are adopted according to different pressure conditions of the rear wheels to match the driving conditions of the wheeled work machinery, which helps to reduce energy consumption, improve efficiency, and effectively alleviate the wear of the front wheels.

[0108] The upward state includes both a continuous upward state and an overall upward trend, while the downward state includes both a continuous downward state and an overall downward trend. In other words, fluctuations are allowed during the change process.

[0109] Specifically, the third pressure threshold can be 200 bar to 230 bar, preferably 200 bar; the fourth pressure threshold can be 150 bar to 160 bar, preferably 150 bar.

[0110] It's understandable that when the first pressure is rising, the wheeled work machinery may have just entered the driving state from its initial state, and the rear wheel pressure is gradually increasing. Using the third pressure threshold as the critical value to distinguish between the first and second working conditions of the wheeled work machinery allows the rear wheel pressure to vary within a larger range, ensuring that the driving force of the rear wheels can be fully utilized, which is beneficial to ensuring the normal operation of the wheeled work machinery. When the first pressure is falling, it indicates that the wheeled work machinery has entered the construction process. Due to changes in road conditions or load, the rear wheel pressure has begun to decrease, and the first pressure may have just dropped below the third pressure threshold. The front wheel pressure has also undergone corresponding adjustments and is at a higher pressure level. Considering the actual road conditions on site, the first pressure may still change abruptly. At this time, the fourth pressure threshold is used as the critical value to distinguish whether the wheeled work machinery has entered the second working condition, providing a transition range for the first pressure (i.e., the pressure range between the third and fourth pressure thresholds), so that the pressure adjustment operation of the front wheels can be carried out after the first pressure has entered a stable state.

[0111] The wheeled work machinery drive control method in this embodiment has a certain degree of flexibility in judging the driving conditions of the wheeled work machinery. It adopts corresponding judgment criteria according to different pressure change states to adapt to the road conditions and actual applications at the construction site. This can effectively prevent the phenomenon of frequent pressure adjustment operations on the front wheels due to sudden changes in the pressure of the rear wheels, which is conducive to ensuring the driving of the wheeled work machinery and the continuity and stability of construction operations.

[0112] Furthermore, in any of the above embodiments, the first target pressure is the maximum output pressure of the front wheel drive mechanism; the second target pressure is within a first range, and the maximum value of the first range is less than the first target pressure.

[0113] The specific value of the first target pressure can be determined according to the specific model of the front wheel drive mechanism; the first range can be 20 bar to 100 bar, that is, the second target pressure can be any pressure value between 20 bar and 100 bar.

[0114] Through the above improvements, the first target pressure is specifically the maximum output pressure of the front-wheel drive mechanism. This allows the front-wheel drive mechanism to operate at its maximum output pressure when the wheeled work machinery is in its first working condition, maximizing the driving force output of the front wheels and thus distributing as much of the driving force demand as possible. This facilitates further optimization of the driving force distribution and further prevents rear wheel slippage. Furthermore, by limiting the second target pressure to a range less than the first target pressure, a reasonable transition range is created between the two. This serves as a buffer zone when the first pressure is decreasing, preventing frequent adjustments to the front-wheel drive mechanism due to fluctuations in the first pressure. This improves the stability and continuity of the wheeled work machinery's operation and movement.

[0115] One embodiment of the present invention provides a drive control method for wheeled work machinery. For example... Figure 5 As shown, the drive control method for wheeled work machinery includes:

[0116] Step S110: Obtain the pressure state parameters of the rear wheel drive mechanism of the wheeled work machinery;

[0117] Step S211: Determine whether the first pressure is greater than or equal to the first pressure threshold, and generate the first determination result;

[0118] If the first judgment result is yes, execute step S212: determine the driving condition as the first condition;

[0119] If the first judgment result is negative, proceed to step S213: determine whether the first pressure is less than or equal to the second pressure threshold, and generate the second judgment result;

[0120] If the second judgment result is yes, execute step S214: determine the driving condition as the second condition;

[0121] If the second judgment result is negative, proceed to step S215: determine the driving condition as the third condition;

[0122] When the driving condition is the first condition, execute step S310: control the front wheel drive mechanism to work with the first target pressure;

[0123] When the driving condition is the second condition, execute step S321: obtain the second pressure of the front wheel drive mechanism;

[0124] Step S322: Determine whether the second pressure is within the first range, and generate a third judgment result;

[0125] If the third judgment result is yes, execute step S322 again;

[0126] If the third judgment result is negative, proceed to step S323: adjust the second pressure to the second target pressure;

[0127] When the driving condition is the third condition, execute step S330: control the front wheel drive mechanism to work at the current pressure.

[0128] The pressure state parameters include a first pressure of the rear-wheel drive mechanism; a first pressure threshold greater than a second pressure threshold; a first target pressure being the maximum output pressure of the front-wheel drive mechanism; a second target pressure within a first range, and the maximum value of the first range being less than the first target pressure.

[0129] In this embodiment, step S320 in the above embodiment is further improved. When the wheeled work machinery is in the second working condition, steps S321 and S322 are used to determine whether the second pressure of the front wheel drive mechanism is within the first range, so as to determine whether the current pressure of the front wheel drive mechanism is too low or too high. If the second pressure is within the first range, it means that the current pressure of the front wheel drive mechanism can be matched with the current driving condition of the wheeled work machinery. At this time, no pressure adjustment operation is required for the front wheel drive mechanism. Step S322 is executed again to detect the pressure change of the front wheel drive mechanism. If the second pressure is outside the first range, it means that the current pressure of the front wheel drive mechanism is too high or too low and is not matched with the driving condition of the wheeled work machinery. Step S323 is used to adjust the second pressure to the second target pressure, that is, to adjust the working pressure of the front wheel drive mechanism to the first range.

[0130] Specifically, when the first pressure exceeds the maximum value of the first range, the front wheel drive mechanism is controlled to reduce the second pressure to within the first range. This reduces the driving force on the front wheels, resulting in a more rational distribution of driving force, saving energy, and reducing wear on the front wheels. When the first pressure is less than the minimum value of the first range, the front wheel drive mechanism is controlled to increase the second pressure to within the first range. This prevents the front wheels from being too low and causing air suction, ensuring that the pressure on the front wheels is compatible with the speed and condition of the wheeled work machinery. The first range can specifically be from 20 bar to 100 bar.

[0131] Furthermore, in this embodiment, the second target pressure is within a second range, which is within the first range.

[0132] Through the above improvements, when the wheeled work machinery is in the second working condition, if the second pressure of the front-wheel drive mechanism is not within the first range, the second pressure can be further adjusted. Specifically, the second pressure is adjusted to a second target pressure, and the value range of the second target pressure is the second range (within the first range, i.e., the second range is a sub-range of the first range), thereby narrowing the value range of the second target pressure. At this time, in the drive force distribution scheme, the proportion of rear-wheel drive force is further increased, and the proportion of front-wheel drive force is further decreased to adapt to the second working condition of the wheeled work machinery, while also helping to save energy and reduce energy consumption. Preferably, within the first range, the value of the second range is closer to the minimum value of the first range than the maximum value of the first range, so that the value of the second target pressure is a pressure value with a smaller value within the first range.

[0133] Wherein, when the first range is 20 bar to 100 bar, the second range can be 30 bar to 50 bar; further, the second range is 40 bar to 50 bar, so that when the wheeled work machinery is in the second working condition, if the second pressure of the front wheel drive mechanism is not in the first range, the second pressure will be adjusted to the range of 40 bar to 50 bar, so that the second pressure remains relatively stable at a smaller pressure value.

[0134] Furthermore, in any of the above embodiments, an initial speed can be set in the initial state of the wheeled work machinery. By setting both the rear and front wheels to operate at a first travel speed, the travel speed of the wheeled work machinery can be kept stable, achieving uniform speed travel. The first travel speed can be set according to specific construction needs; for example, the first travel speed could be 5 m / min. Since the rear wheels are the main drive wheels, corresponding rear wheel speed sensors can be installed to detect the travel speed of the rear wheels. Adjustments can be made promptly when the travel speed of the rear wheels changes, ensuring that the rear wheels always operate at the first travel speed, thereby achieving closed-loop speed control of the wheeled work machinery.

[0135] Furthermore, in any of the above embodiments, the output pressure of the front wheel drive mechanism is controlled by adjusting the operating current of the multi-way valve of the front wheel drive mechanism. Specifically, each time the operating current of the multi-way valve of the front wheel drive mechanism is adjusted, the adjustment amount of the multi-way valve operating current is within a first current adjustment range.

[0136] The front-wheel drive mechanism of wheeled work machinery includes a multi-way valve. When adjusting the pressure of the front-wheel drive mechanism, the output pressure is changed by controlling the operating current of the multi-way valve. It can be understood that the front-wheel drive mechanism is driven by a hydraulic system, and the output pressure of the front-wheel drive mechanism can be changed by adjusting the flow rate and pressure of the hydraulic fluid in the hydraulic lines through the multi-way valve. The magnitude of the multi-way valve's operating current is related to the flow rate and pressure of the hydraulic fluid; therefore, adjustment can be achieved by regulating the multi-way valve's operating current. Each adjustment of the multi-way valve's operating current must be within a certain first current adjustment range to prevent abnormal conditions caused by excessively high or low operating current, such as tire spinning due to lack of contact with the ground, or increased weakness in tire drive.

[0137] For example, in the initial state of the wheeled work machinery, with the rear wheels operating at a first travel speed of 5 m / min, the operating current of the multi-way valve in the front wheel drive mechanism can be adjusted to 260 mA to ensure the front wheels also travel at 5 m / min, maintaining consistency with the rear wheels. When the wheeled work machinery is in its first operating condition, the operating current of the multi-way valve can be directly adjusted to 280 mA to allow the front wheel drive mechanism to operate at maximum output pressure, maximizing the driving force of the front wheels. The adjustment range of the multi-way valve operating current can be ±30 mA, meaning that each adjustment operation cannot exceed 30 mA, where ± indicates increase or decrease (positive indicates increase, negative indicates decrease).

[0138] It should be noted that the specific values ​​of the multi-way valve operating current mentioned above are only one specific example. In practical applications, depending on the model of the multi-way valve, the correspondence between the multi-way valve operating current and the pressure of the front wheel drive mechanism may also be different, and the specific value of the multi-way valve operating current can be set according to the specific situation.

[0139] In an embodiment of the second aspect of the present invention, a drive control system 1 is also provided, such as... Figure 6 and Figure 7 As shown, it includes a rear-wheel drive mechanism 11, a front-wheel drive mechanism 12, a rear-wheel detection assembly 13, a front-wheel detection assembly 14, and a controller 15.

[0140] When assembled into a wheeled work machine, the rear wheel drive mechanism 11 is driven by the rear wheel 221 of the wheeled work machine to drive the rear wheel 221 to rotate; the front wheel drive mechanism 12 is driven by the front wheel 222 of the wheeled work machine to drive the front wheel 222 to rotate. The rear wheel detection component 13 is correspondingly configured with the rear wheel drive mechanism 11 to detect the pressure state parameters of the rear wheel drive mechanism 11, including but not limited to the first pressure of the rear wheel drive mechanism 11; the front wheel detection component 14 is correspondingly configured with the front wheel drive mechanism 12 to detect the output pressure of the front wheel drive mechanism 12. The controller 15 is communicatively connected to the rear wheel drive mechanism 11, the front wheel drive mechanism 12, the rear wheel detection component 13, and the front wheel detection component 14; the controller 15 can receive the detection results from the rear wheel detection component 13 and the front wheel detection component 14, and can control the operation of the rear wheel drive mechanism 11 and the front wheel drive mechanism 12, thereby driving the rear wheel 221 and the front wheel 222 to rotate, and realizing the wheeled work machine drive control method in any of the above embodiments.

[0141] It should be noted that the rear-wheel drive mechanism 11 and the front-wheel drive mechanism 12 can be driven by a hydraulic system; both the rear-wheel detection assembly 13 and the front-wheel detection assembly 14 can include one or more detectors, and the type of detector can vary depending on the object being detected. Additionally, the controller 15 can be a specially configured control device or an onboard computer integrated into the wheeled work machinery.

[0142] Furthermore, the drive control system 1 in this embodiment also has all the beneficial effects of the wheeled work machinery drive control method in any of the first aspects described above, which will not be repeated here.

[0143] Furthermore, in some embodiments, such as Figure 6 and Figure 7 As shown, the rear-wheel drive mechanism 11 and the front-wheel drive mechanism 12 are driven by a hydraulic system. The rear-wheel drive mechanism 11 includes a rear-wheel drive pump 111 and a rear-wheel drive motor 112; the input end of the rear-wheel drive pump 111 is adapted to be connected to the power system of the wheeled work machinery to draw power from the power system; the rear-wheel drive motor 112 is connected to the rear-wheel drive pump 111 through a hydraulic line, and the output end of the rear-wheel drive motor 112 is connected to the rear wheel 221. When the drive control system 1 is installed on the wheeled work machinery, the oil inlet of the rear-wheel drive pump 111 is connected to the oil tank 16 of the wheeled work machinery through a hydraulic line. The power system of the wheeled work machinery drives the rear-wheel drive pump 111 to operate, so as to pump the hydraulic oil in the oil tank 16 to the rear-wheel drive motor 112, and use the pressure of the hydraulic oil to drive the rear-wheel drive motor 112 to operate, output power and drive the rear wheel 221 to operate. Figure 7In the example, the power system specifically includes an engine 23 and a transfer case 24 that are connected by a drive, and a rear-wheel drive pump 111 that is connected by a drive to the transfer case 24; the output shaft of the rear-wheel drive motor 112 is connected by a drive to the input end of the gearbox 25 to perform gear shifting operation through the gearbox 25, and the output end of the gearbox 25 is connected to the rear axle 27 through a drive shaft 26, thereby transmitting power to the two rear wheels 221 through the rear axle 27.

[0144] The rear wheel detection assembly 13 includes a rear wheel pressure sensor 132. For example... Figure 7 In the example, the rear wheel pressure sensor 132 is located in the hydraulic line between the rear wheel drive motor 112 and the rear wheel drive pump 111 to detect the pressure status parameters (e.g., the first pressure) of the rear wheel drive motor 112; the controller 15 determines the driving conditions of the wheeled work machinery based on the working pressure of the rear wheel drive motor 112 and controls the front wheel drive mechanism 12 to perform corresponding adjustment operations.

[0145] Furthermore, the rear wheel detection assembly 13 may also include a rear wheel speed sensor 131. The rear wheel speed sensor 131 can be mounted on the output shaft of the rear wheel drive motor 112 to detect the output rotational speed of the rear wheel drive motor 112. The controller 15 can calculate the travel speed of the rear wheel 221 based on parameters such as the output rotational speed of the rear wheel drive motor 112, the transmission ratio between the rear wheel drive motor 112 and the rear wheel 221, and the size of the rear wheel 221, and perform corresponding control operations on the travel speed of the rear wheel 221. Of course, the rear wheel speed sensor 131 can also be mounted on the rear wheel 221 or the rear axle 27.

[0146] like Figure 6 and Figure 7 As shown, the front-wheel drive mechanism 12 includes a front-wheel drive pump 121, a front-wheel drive motor 122, and a front-wheel multi-way valve 123. The input end of the front-wheel drive pump 121 is adapted to be connected to the power system of the wheeled work machinery for transmission, so as to take power from the power system. The output end of the front-wheel drive motor 122 is connected to the front wheel 222 for transmission, so as to drive the front wheel 222 to rotate. The front-wheel multi-way valve 123 is provided with multiple different valve ports. The different valve ports of the front-wheel multi-way valve 123 are respectively connected to the front-wheel drive pump 121 and the front-wheel drive motor 122 through hydraulic lines. The front-wheel multi-way valve 123 enables a hydraulic connection between the front-wheel drive pump 121 and the front-wheel drive motor 122, so that the front-wheel drive pump 121 supplies oil to the front-wheel drive motor 122, and uses the pressure of the hydraulic oil to drive the front-wheel drive motor 122 to rotate. The front wheel multi-way valve 123 can control the amount of oil supplied by the front wheel drive pump 121 to the front wheel drive motor 122, thereby changing the working pressure of the front wheel drive motor 122 and realizing pressure regulation operation.

[0147] Specifically, such as Figure 7In the example, the front wheel drive mechanism 12 can be equipped with two front wheel drive motors 122, which are respectively connected to the left front wheel and the right front wheel to drive and control the two front wheels 222 respectively.

[0148] The front wheel detection assembly 14 includes a front wheel pressure sensor 141. For example... Figure 7 In the example, the front wheel pressure sensor 141 can be installed in the hydraulic line between the front wheel drive motor 122 and the front wheel multi-way valve 123 to detect the working pressure of the front wheel drive motor 122. The controller 15 receives the detection result from the front wheel pressure sensor 141 and performs corresponding adjustment control operations based on the working pressure of the front wheel drive motor 122. Specifically, one front wheel pressure sensor 141 can be installed in the main hydraulic line of the two front wheel drive motors 122 to detect the total pressure of the two front wheel drive motors 122; alternatively, one front wheel pressure sensor 141 can be installed in each of the hydraulic branches of the two front wheel drive motors 122 to detect the working pressure of each front wheel drive motor 122 separately.

[0149] In an embodiment of the third aspect of the invention, a wheeled work machine 2 is also provided. For example... Figure 7 and Figure 8 As shown, the wheeled work machinery 2 includes a vehicle body 21, a running mechanism 22, and a drive control system 1 as described in any of the above embodiments. The vehicle body 21 serves as the main structure of the wheeled work machinery 2; the running mechanism 22 is connected to the vehicle body 21 to drive the vehicle body 21; the running mechanism 22 includes rear wheels 221 and front wheels 222, forming a wheeled work machinery form. The wheeled work machinery 2 features high flexibility and fast transfer speed. The drive control system 1 is mounted on the vehicle body 21 to control the rear wheels 221 and front wheels 222 of the running mechanism separately, enabling independent drive control of the rear wheels 221 and front wheels 222 of the wheeled work machinery 2. This facilitates the adoption of different drive control schemes according to different working conditions to optimize the distribution of driving force.

[0150] In this system, the rear wheel 221 serves as the main drive wheel of the wheeled work machinery 2, while the front wheel 222 serves as the auxiliary drive wheel. The drive control system 1 implements the wheeled work machinery drive control method described in any embodiment of the first aspect. It can adjust and control the front wheel 222 according to the pressure state of the rear wheel 221, ensuring that the driving force of the front wheel 222 is fully utilized when the driving force of the rear wheel 221 is insufficient and slippage may occur. Conversely, when the driving force of the rear wheel 221 meets the driving requirements, the driving force of the front wheel 222 is reduced to save energy and reduce wear on the front wheel 222.

[0151] The wheeled work machinery 2 in this embodiment includes, but is not limited to, wheeled pavers, and can also be other work machinery with front-wheel drive and rear-wheel drive mechanisms, such as dump trucks.

[0152] Furthermore, the wheeled work machinery 2 in this embodiment also has all the beneficial effects of the drive control system 1 in any embodiment of the second aspect and the drive control method of the wheeled work machinery in any embodiment of the first aspect, which will not be repeated here.

[0153] One embodiment of the present invention provides an electronic device. The electronic device includes a processor and a memory, wherein the memory stores a computer program suitable for execution on the processor. When the processor executes the computer program in the memory, it can implement the wheeled work machinery drive control method of any of the above embodiments. Furthermore, the electronic device may also be provided with a communication interface and a communication bus, wherein the processor, communication interface, and memory communicate with each other through the communication bus. The electronic device in this embodiment has all the beneficial effects of the wheeled work machinery drive control method of any of the above embodiments, and will not be elaborated further here.

[0154] It should be noted that the computer program in the memory of the above embodiments can be implemented in the form of software functional units. When implemented in the form of software functional units and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the wheeled work machinery drive control method of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0155] In addition, one embodiment of the present invention provides a readable storage medium storing a computer program that, when executed by a processor, implements the wheeled machinery drive control method of any of the above embodiments. Therefore, the readable storage medium in this embodiment possesses all the beneficial effects of the wheeled machinery drive control method of any of the above embodiments, which will not be elaborated further here.

[0156] The basic principles of the present invention have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in the present invention are merely examples and not limitations, and should not be considered as essential features of each embodiment of the present invention. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the present invention to the necessity of employing the aforementioned specific details.

[0157] The block diagrams of the devices, apparatuses, devices, and systems involved in this invention 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. It should also be noted that in the apparatuses and devices of this invention, the components can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered equivalents of the invention.

[0158] The computer program product of this invention can be written in any combination of one or more programming languages ​​to execute 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.

[0159] The readable storage medium in this invention can be any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, including but 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.

[0160] 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.

[0161] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the invention. 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 the invention. Therefore, the invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features of the invention herein.

[0162] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drive control method for wheeled work machinery, characterized in that, Step S110: Obtain the pressure state parameters of the rear wheel drive mechanism of the wheeled work machinery; Step S200: Determine the operating conditions of the wheeled work machinery based on the pressure state parameters; Step S300: Control the output pressure of the front wheel drive mechanism of the wheeled work machinery according to the driving conditions; Step S200: Determining the operating conditions of the wheeled work machinery based on the pressure state parameters, including: Step S221: Determine whether the first pressure is in an upward or downward state based on the pressure change trend; When the first pressure is in an upward state, execute step S222: determine whether the first pressure is greater than the third pressure threshold, and generate the third judgment result; If the third judgment result is yes, execute step S223: determine the driving condition as the first condition, wherein the first condition indicates that the pressure state of the rear wheel is close to slippage. If the third judgment result is negative, proceed to step S224: determine the driving condition as the second condition, wherein the second condition indicates that the pressure state of the rear wheel is normal. When the first pressure is in a decreasing state, execute step S225: determine whether the first pressure is less than or equal to the fourth pressure threshold, and generate the fourth judgment result; If the fourth judgment result is yes, execute step S224: determine the driving condition as the second condition; If the fourth judgment result is negative, proceed to step S226: determine whether the first pressure is greater than the third pressure threshold, and generate the fifth judgment result; If the fifth judgment result is yes, execute step S223: determine the driving condition as the first condition; If the fifth judgment result is negative, proceed to step S227: determine the driving condition as the third condition, wherein the third condition indicates that the pressure state of the rear wheel is a transitional state; Step S300: Controlling the output pressure of the front wheel drive mechanism of the wheeled work machinery according to the driving conditions includes: When the driving condition is the first condition, execute step S310: control the front wheel drive mechanism to work with the first target pressure; When the driving condition is the second condition, execute step S320: control the front wheel drive mechanism to work with the second target pressure; When the driving condition is the third condition, execute step S330: control the front wheel drive mechanism to work at the current output pressure; Among them, the pressure state parameters include the first pressure and pressure change trend of the rear wheel drive mechanism, the third pressure threshold being greater than the fourth pressure threshold, and the first target pressure being greater than the second target pressure; The first target pressure is the maximum output pressure of the front wheel drive mechanism; The second target pressure is within a first range, and the maximum value of the first range is less than the first target pressure.

2. The drive control method for wheeled work machinery according to claim 1, characterized in that, Step S320: Controlling the front wheel drive mechanism to operate at the second target pressure includes: Step S321: Obtain the second pressure of the front wheel drive mechanism; Step S322: Determine whether the second pressure is within the first range, and generate a third determination result; If the third judgment result is yes, then execute step S322 again; If the third judgment result is negative, proceed to step S323: adjust the second pressure to the second target pressure.

3. The drive control method for wheeled work machinery according to claim 2, characterized in that, The second target pressure is within the second range; The second range is within the first range.

4. The drive control method for wheeled work machinery according to any one of claims 1 to 3, characterized in that, The output pressure of the front wheel drive mechanism is controlled by adjusting the operating current of the multi-way valve.

5. A drive control system, characterized in that, include: Rear-wheel drive mechanism; Front-wheel drive mechanism; The rear wheel detection component is used to detect the pressure state parameters of the rear wheel drive mechanism; A front wheel detection assembly is used to detect the output pressure of the front wheel drive mechanism; The controller is communicatively connected to the rear-wheel drive mechanism, the front-wheel drive mechanism, the rear-wheel detection component, and the front-wheel detection component to control the operation of the rear-wheel drive mechanism and the front-wheel drive mechanism, and to implement the wheeled work machinery drive control method as described in any one of claims 1 to 4.

6. The drive control system according to claim 5, characterized in that, The rear-wheel drive mechanism includes: A rear-wheel drive pump, the input end of which is adapted to be connected to the power system of the wheeled work machinery; A rear-wheel drive motor is connected to the rear-wheel drive pump via a hydraulic line, and the output end of the rear-wheel drive motor is connected to the rear wheel drive. The front-wheel drive mechanism includes: A front-wheel drive pump, the input end of which is adapted to be connected to the power system transmission; A front-wheel drive motor, the output of which is connected to the front wheel drive. A front wheel multi-way valve, wherein different valve ports of the front wheel multi-way valve are respectively connected to the front wheel drive pump and the front wheel drive motor through hydraulic lines to control the amount of oil supplied by the front wheel drive pump to the front wheel drive motor; The rear wheel detection component includes: The rear wheel pressure sensor is located in the hydraulic line between the rear wheel drive motor and the rear wheel drive pump; The front wheel detection component includes: The front wheel pressure sensor is located in the hydraulic line between the front wheel drive motor and the front wheel multi-way valve.

7. A wheeled work machine, characterized in that, include: Vehicle body; A driving mechanism connected to the vehicle body, the driving mechanism including rear wheels and front wheels; The drive control system as described in claim 5 or 6 is mounted on the vehicle body, and the rear-wheel drive mechanism is connected to the rear-wheel drive; the front-wheel drive mechanism is connected to the front-wheel drive.

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