Method, device, equipment and medium for preventing impact of vehicle air suspension

Abstract

The present application discloses a method, device, equipment and medium for preventing impact of vehicle air suspension, the method comprising: determining whether the vehicle state satisfies the conditions for starting the air suspension anti-impact operation when receiving a loading start signal or an unloading start signal from the vehicle; if the vehicle state satisfies the conditions for starting the air suspension anti-impact operation, controlling a preset telescopic support arm to extend to form a support between the frame crossbeam and the axle housing, so that the impact load caused by loading or unloading is transmitted between the frame crossbeam, the telescopic support arm and the axle housing, thereby increasing the force points between the frame and the axle when an impact load may occur, thereby locking the spatial distance between the frame and the axle, so that the load is transmitted between the frame and the axle, and no longer passes through the air suspension, thereby reducing the impact effect of the impact load on the air suspension.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a method, device, equipment and medium for preventing impact of vehicle air suspension. Background Art

[0002] In the field of special-purpose vehicles, such as split-body dump trucks and wire-pulled sanitation tankers, the vehicle's axle load can experience sudden, instantaneous increases when loading and unloading integral cargo. This load is typically transmitted through the vehicle frame to the suspension, then from the suspension to the axle, and finally to the ground through the tires. For vehicles with air suspension, this load transfer process can cause excessive deformation of the air suspension due to the inherent stiffness of the air spring. This can lead to premature failure of the airbag during use, causing inconvenience and financial losses for customers.

[0003] Most air suspension vehicles currently on the market use passive air suspension systems, which generally lack measures to mitigate the impact on the airbags during sudden load changes. Due to the inherent flaws in the air spring stiffness characteristics of passive air suspensions, coupled with the mismatch between airbag stiffness and vehicle parameters, the airbags can experience excessive instantaneous deformation during load transfers or sudden changes, causing excessive pull on the airbags and premature damage to the airbags. Air suspension vehicles primarily use height control to cope with load changes, but this fails to fundamentally reduce the impact on the airbags through airbag deformation and extend their service life. Air suspension vehicles on the market that experience load center shifts and sudden load changes during loading and unloading generally experience abnormal wear and premature failure of the suspension airbags. Summary of the Invention

[0004] The present application provides a method, device, equipment and storage medium for preventing impact of vehicle air suspension, which can solve the technical problem in the prior art that sudden changes in the load on the vehicle during loading and unloading will cause the air suspension to deform too much, resulting in damage and failure of the air suspension airbag during use.

[0005] In a first aspect, an embodiment of the present application provides a method for preventing impact of a vehicle air suspension, the method comprising:

[0006] Upon receiving a loading start signal or an unloading start signal from the vehicle, determining whether the vehicle state satisfies the conditions for activating the air suspension anti-shock operation;

[0007] If the vehicle state satisfies the conditions for activating the air suspension's anti-impact operation, the preset telescopic support arm is controlled to extend to form a support between the frame cross member and the axle housing, so that the impact load caused by loading or unloading is transferred between the frame cross member, the telescopic support arm and the axle housing.

[0008] In conjunction with the first aspect, in one embodiment, determining whether the vehicle state satisfies a condition for activating the air suspension anti-shock operation includes:

[0009] If the vehicle speed is zero, the air suspension height is within a preset height range, and the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is valid, then it is determined that the vehicle state meets the conditions for activating the air suspension anti-shock operation;

[0010] If the vehicle speed is greater than zero, the air suspension height exceeds the height range, or the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is invalid, it is determined that the vehicle state does not meet the conditions for starting the air suspension anti-impact operation.

[0011] In one embodiment, the controlling of the preset telescopic support arm to extend to form a support between the frame cross member and the axle housing further includes:

[0012] The telescopic support arm pre-placed on the frame crossbeam is controlled to extend to directly contact the axle housing, so as to form support between the frame crossbeam and the axle housing.

[0013] In one embodiment, the controlling of the preset telescopic support arm to extend to form a support between the frame cross member and the axle housing further includes:

[0014] The telescopic support arm pre-placed on the frame crossbeam is controlled to extend to directly contact the support pad provided on the axle housing, and to form indirect contact with the axle housing to form support between the frame crossbeam and the axle housing.

[0015] In one embodiment, the controlling of the preset telescopic support arm to extend to form a support between the frame cross member and the axle housing further includes:

[0016] When the pressure between the telescopic support arm and the axle housing is greater than 0, the telescopic support arm is controlled to stop extending.

[0017] In one embodiment, the controlling of the preset telescopic support arm to extend to form a support between the frame cross member and the axle housing further includes:

[0018] Controlling the telescopic support arm to complete the extension operation within a first time period;

[0019] The first duration is calibrated based on the speed of loading and unloading. The faster the speed of loading and unloading, the shorter the first duration.

[0020] In one embodiment, the method further comprises:

[0021] When the telescopic support arm is in the extended state, determine whether the power of the vehicle is turned off;

[0022] If the vehicle power supply is not turned off and the vehicle speed is greater than zero and maintained for a second time period, the telescopic support arm is controlled to retract so that the vehicle load is transferred between the frame cross member, the air suspension and the axle housing;

[0023] If the vehicle power is turned off, the telescopic support arm is controlled to maintain the current extended state, and after the vehicle power is turned on again, the telescopic support arm is controlled to retract;

[0024] Wherein, the time length for controlling the telescopic support arm to complete the retraction operation is greater than or equal to a preset third time length.

[0025] In a second aspect, an embodiment of the present application provides a vehicle air suspension anti-shock device, the vehicle air suspension anti-shock device comprising:

[0026] a judgment module, which is used to judge whether the vehicle state meets the conditions for starting the air suspension anti-impact operation when receiving a loading start signal or an unloading start signal from the vehicle;

[0027] The control module is configured to control a preset telescopic support arm to extend if the vehicle state satisfies a condition for activating the air suspension anti-impact operation, thereby forming a support between the frame cross member and the axle housing, so that the impact load caused by loading or unloading is transferred between the frame cross member, the telescopic support arm, and the axle housing.

[0028] In the third aspect, an embodiment of the present application provides a vehicle air suspension anti-shock device, which includes a processor, a memory, and a vehicle air suspension anti-shock program stored on the memory and executable by the processor, wherein when the vehicle air suspension anti-shock program is executed by the processor, the steps of the vehicle air suspension anti-shock method described in any one of the above items are implemented.

[0029] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, characterized in that a vehicle air suspension anti-impact program is stored on the computer-readable storage medium, wherein when the vehicle air suspension anti-impact program is executed by the processor, the steps of the vehicle air suspension anti-impact method as described in any one of the above are implemented.

[0030] The embodiments of the present application provide a method, device, equipment and medium for preventing impact of vehicle air suspension, which determines whether the vehicle state meets the conditions for starting the air suspension anti-impact operation when receiving a loading start signal or an unloading start signal installed on the vehicle; if the vehicle state meets the conditions for starting the air suspension anti-impact operation, the preset telescopic support arm is controlled to extend to form a support between the frame crossbeam and the axle housing, so that the impact load caused by loading or unloading is transmitted between the frame crossbeam, the telescopic support arm and the axle housing, thereby increasing the force points between the frame and the axle when an impact load may occur, thereby locking the spatial distance between the frame and the axle, so that the load is transmitted between the frame and the axle, and no longer passes through the air suspension, thereby reducing the impact effect of the impact load on the air suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a flow chart of an embodiment of a method for preventing impact of vehicle air suspension according to the present application;

[0032] Figure 2 This is a schematic diagram of the components of the vehicle air suspension anti-shock system;

[0033] Figure 3 Schematic diagram of the telescopic support arm directly contacting the axle housing;

[0034] Figure 4 Schematic diagram of the telescopic support arm indirectly contacting the axle housing;

[0035] Figure 5 Schematic diagram of the control flow of the telescopic support arm when the vehicle is driving

[0036] Figure 6 This is a functional module diagram of an embodiment of a vehicle air suspension anti-shock device of the present application;

[0037] Figure 7 This is a schematic diagram of the hardware structure of the vehicle air suspension anti-impact device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0040] In a first aspect, an embodiment of the present application provides a method for preventing impact of a vehicle air suspension.

[0041] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the method for preventing impact of vehicle air suspension in this application. Figure 1 As shown, the method for preventing impact of vehicle air suspension includes:

[0042] Step S101: upon receiving a loading start signal or an unloading start signal from a vehicle, determining whether the vehicle state satisfies a condition for starting an air suspension anti-shock operation.

[0043] Step S102: If the vehicle state satisfies the conditions for activating the air suspension anti-impact operation, the preset telescopic support arm is controlled to extend to form a support between the frame cross member and the axle housing, so that the impact load caused by loading or unloading is transferred between the frame cross member, the telescopic support arm and the axle housing.

[0044] It's worth noting that vehicle superstructures refer to additional loading equipment or structures equipped on a vehicle to accomplish specific transport or operational tasks. When a loading or unloading start signal is received from the superstructure, indicating the vehicle is about to be loaded or unloaded, a pre-set telescopic support arm extends between the frame crossmember and the axle housing to form support, increasing the stress points between the frame and axle, thereby locking the spatial distance between the frame and axle. This allows the load during loading or unloading to be transferred between the frame and axle, rather than through the air suspension. This reduces the impact of loading and unloading loads on the air suspension, thereby preventing premature damage to the air suspension's airbags and springs.

[0045] The method for preventing the vehicle air suspension from impact in this embodiment can be as follows: Figure 2The vehicle air suspension anti-shock system shown is implemented in this system. The system includes an operating system, a control system, and an execution system. The operating system, after the operator activates a signal or switch to activate the superstructure according to vehicle loading or unloading requirements, transmits loading and unloading signals to the control system. The control system determines whether to execute the operating system's signal response based on vehicle status information and pre-set safety control strategies. When the vehicle meets the requirements, the control system sends a signal to the execution system's motor, which controls a hydraulic pump to extend or retract the telescopic support arm. This allows the telescopic support arm to absorb sudden loads transmitted from the superstructure through the vehicle frame, which would otherwise be borne by the air suspension. This reduces the impact of sudden loads on the air suspension. This modifies the stiffness of the air suspension system, preventing impacts from sudden loads on the air suspension during loading or unloading, reducing abnormal stretching of the air suspension, and ultimately extending the air suspension's service life.

[0046] The vehicle air suspension anti-shock method of the present application is described below in conjunction with the vehicle air suspension anti-shock system.

[0047] Furthermore, in one embodiment, the determination of whether the vehicle state satisfies the conditions for activating the air suspension anti-impact operation includes: if the vehicle speed is zero, the air suspension height is within a preset height range, and the communication signal between the execution system for controlling the telescopic support arm to extend and retract and the corresponding control system is in a valid state, then it is determined that the vehicle state satisfies the conditions for activating the air suspension anti-impact operation; if the vehicle speed is greater than zero, the air suspension height exceeds the height range, or the communication signal between the execution system for controlling the telescopic support arm to extend and retract and the corresponding control system is in an invalid state, then it is determined that the vehicle state does not satisfy the conditions for activating the air suspension anti-impact operation.

[0048] Exemplarily, the operator sends a signal to start loading or unloading the upper body through a rocker switch or a knob in the operating system. The signal is sent to the upper body controller and transmitted to the control system of the present application at the same time.

[0049] After receiving a loading start signal or unloading start signal from the operating system, the control system detects the vehicle's speed signal and determines whether the speed is zero to determine whether the vehicle is stationary. It also detects the air suspension height signal and determines whether the air suspension height is within a preset range. The air suspension height has three states: a calibrated first height, a second height, and a freely adjustable height. If the air suspension height is adjusted above the maximum height within the range during the freely adjustable state, the telescopic support arm may not contact the axle housing, thus failing to reduce impact on the air suspension. The control system also monitors the validity of the communication signal between the control system and the actuator system, which is a CAN signal between the control system and the actuator system. If the vehicle speed is zero, the suspension height is within the range, and the communication signal has not timed out, the control system issues a control command to drive the actuator system's motor to control the hydraulic pump, causing the telescopic support arm to extend and form support between the frame cross member and the axle housing.

[0050] In one embodiment, controlling a pre-installed telescopic support arm to extend to form a support between the frame crossbeam and the axle housing includes: controlling a pre-installed telescopic support arm on the frame crossbeam to extend to directly contact the axle housing to form a support between the frame crossbeam and the axle housing, such as Figure 3 shown.

[0051] Preferably, when controlling the preset telescopic support arm to extend to form a support between the frame crossbeam and the axle housing, the telescopic support arm pre-placed on the frame crossbeam can also be controlled to extend to directly contact the support pad provided on the axle housing, thereby forming indirect contact with the axle housing to form a support between the frame crossbeam and the axle housing, thereby avoiding deformation of the axle housing. Figure 4 shown.

[0052] In one embodiment, when the pressure between the telescopic support arm and the axle housing is greater than 0, it indicates that the telescopic support arm is in contact with the axle, and the telescopic support arm is controlled to stop extending to avoid excessive pressure on the axle housing by the telescopic support arm when loading cargo, causing deformation of the axle housing.

[0053] Preferably, when controlling the preset telescopic support arm to extend to form support between the frame cross member and the axle housing, the telescopic support arm can be controlled to complete the extension operation within a first time period. In this embodiment, the first time period is set to 5 seconds, that is, the controller controls the telescopic arm to complete the extension operation within less than 5 seconds. The first time period is calibrated based on the speed of loading and unloading. The faster the loading and unloading speed, the shorter the first time period. This ensures that the telescopic support arm can be extended to form support in a timely manner after receiving the loading start signal. This avoids the situation where the telescopic support arm fails to contact the support pad or the axle housing due to slow extension speed when the upper load suddenly changes, and fails to effectively prevent impact on the air suspension when the load suddenly changes.

[0054] Explanatory note: the principle of preventing the impact of sudden changes in the load on the vehicle air suspension by the anti-impact method of the vehicle air suspension of this embodiment is as follows:

[0055] After the telescopic support arm, attached to the frame crossmember, extends and contacts the axle housing, the load transfer path changes from superstructure → subframe → frame longitudinal member → air suspension → axle housing → tire → ground to superstructure → subframe → frame longitudinal member → actuator telescopic support arm → axle housing → tire → ground. This means the load no longer passes through the air suspension. Because the telescopic support arm and the axle housing are in rigid contact, deformation does not occur during sudden load changes, minimizing the impact of sudden loads on the air suspension, reducing abnormal stretching, and extending the life of the air suspension.

[0056] In one embodiment, when the telescopic support arm is in an extended state, it is determined whether the power supply of the entire vehicle is turned off; if the power supply of the entire vehicle is not turned off and the vehicle speed is greater than zero and maintained for a second time period, the telescopic support arm is controlled to retract so that the vehicle load is transferred between the frame cross member, the air suspension and the axle housing; if the power supply of the entire vehicle is turned off, the telescopic support arm is controlled to maintain the current extended state, and the telescopic support arm is controlled to retract after the power supply of the entire vehicle is turned on again; wherein, the time length for controlling the telescopic support arm to complete the retraction operation is greater than or equal to a preset third time period.

[0057] It is worth noting that both the second time length and the third time length can be calibrated according to the actual situation of the vehicle. In this embodiment, the third time length is set to 10 seconds.

[0058] Exemplary, such as Figure 5 As shown, when the telescopic support arm is in the extended state, after the vehicle is loaded or unloaded, the control system automatically identifies the state of the vehicle.

[0059] When the vehicle system power is not turned off (i.e., the ignition key is in the ON position) after loading or unloading, and the vehicle is in direct driving mode, the control system detects that the vehicle speed is greater than zero (or other calibrated speed) and maintained for the second time period. The control system will send a command to the actuator system to retract the telescopic support arm to avoid poor comfort caused by the lack of suspension system shock absorption during vehicle operation and collision damage to the actuator and axle. The telescopic support arm is also controlled to fully retract for a time period greater than or equal to the third time period (i.e., the telescopic support arm fully retracted time is ≥ 10 seconds) to prevent the telescopic support arm from suddenly retracting and completely losing support, which would cause the cargo to impact the suspension.

[0060] When the vehicle is loaded or unloaded, the vehicle system power is turned off (i.e., the ignition key is in OFF position), and the execution system does not operate the telescopic arm. When the vehicle system power is powered on again the next time, the control system sends the telescopic arm retraction command by default to avoid poor comfort caused by the lack of suspension system shock absorption during vehicle operation and collision damage to the actuator and axle.

[0061] The present invention provides a method for preventing impacts on vehicle air suspensions. The method comprises installing a retractable rigid telescopic support arm on the chassis frame, which, when extended, can directly or indirectly contact the axle housing. The method automatically recognizes a loading start signal or unloading start signal from a customer's operation, and in conjunction with information about a sudden load on the load, extends the telescopic support arm in advance to rigidly contact the axle housing, thereby carrying the sudden load on the load. The device automatically detects the completion of loading and unloading based on vehicle speed and automatically retracts the telescopic support arm upon completion, thereby preventing the lack of suspension shock absorption during vehicle operation, which affects vehicle comfort, and extending the service life of the telescopic support arm and the axle. The telescopic support arm achieves rigid contact through adaptive extension and retraction of the telescopic support arm and the axle, thereby preventing impacts on the air suspension caused by sudden load changes during loading and unloading, and preventing premature damage to the air suspension caused by abnormal stretching. The method is not only applicable to air suspension vehicles, but also has reference value and significance for trucks with other leaf springs and composite suspensions, preventing premature damage to the springs due to impacts.

[0062] In a second aspect, an embodiment of the present application also provides a device for preventing impact of a vehicle air suspension.

[0063] In one embodiment, referring to Figure 6 , Figure 6 This is a functional module diagram of an embodiment of the vehicle air suspension anti-shock device of this application. Figure 6 As shown, the anti-impact device of the vehicle air suspension includes:

[0064] a judgment module, which is used to judge whether the vehicle state meets the conditions for starting the air suspension anti-impact operation when receiving a loading start signal or an unloading start signal from the vehicle;

[0065] The control module is configured to control a preset telescopic support arm to extend if the vehicle state satisfies a condition for activating the air suspension anti-impact operation, thereby forming a support between the frame cross member and the axle housing, so that the impact load caused by loading or unloading is transferred between the frame cross member, the telescopic support arm, and the axle housing.

[0066] Furthermore, in one embodiment, the judgment module is further configured to:

[0067] If the vehicle speed is zero, the air suspension height is within a preset height range, and the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is valid, then it is determined that the vehicle state meets the conditions for activating the air suspension anti-shock operation;

[0068] If the vehicle speed is greater than zero, the air suspension height exceeds the height range, or the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is invalid, it is determined that the vehicle state does not meet the conditions for starting the air suspension anti-impact operation.

[0069] Furthermore, in one embodiment, the control module is further configured to control a telescopic support arm pre-placed on the frame crossbeam to extend and directly contact the axle housing, so as to form support between the frame crossbeam and the axle housing.

[0070] Furthermore, in one embodiment, the control module is also used to: control the telescopic support arm pre-positioned on the frame crossbeam to extend and directly contact the support pad provided on the axle housing, and form indirect contact with the axle housing to form support between the frame crossbeam and the axle housing.

[0071] Furthermore, in one embodiment, the control module is further configured to:

[0072] When the pressure between the telescopic support arm and the axle housing is greater than 0, the telescopic support arm is controlled to stop extending.

[0073] Furthermore, in one embodiment, the control module is further configured to:

[0074] Controlling the telescopic support arm to complete the extension operation within a first time period;

[0075] The first duration is calibrated based on the speed of loading and unloading. The faster the speed of loading and unloading, the shorter the first duration.

[0076] Furthermore, in one embodiment, the control module is further configured to:

[0077] When the telescopic support arm is in the extended state, determine whether the power of the vehicle is turned off;

[0078] If the vehicle power supply is not turned off and the vehicle speed is greater than zero and maintained for a second time period, the telescopic support arm is controlled to retract so that the vehicle load is transferred between the frame cross member, the air suspension and the axle housing;

[0079] If the vehicle power is turned off, the telescopic support arm is controlled to maintain the current extended state, and after the vehicle power is turned on again, the telescopic support arm is controlled to retract;

[0080] Wherein, the time length for controlling the telescopic support arm to complete the retraction operation is greater than or equal to a preset third time length.

[0081] Among them, the functional implementation of each module in the above-mentioned vehicle air suspension anti-impact device corresponds to the various steps in the above-mentioned vehicle air suspension anti-impact method embodiment, and its functions and implementation processes will not be repeated here one by one.

[0082] In a third aspect, an embodiment of the present application provides a vehicle air suspension anti-shock device. The vehicle air suspension anti-shock device may be a control module in a vehicle air suspension anti-shock system, or other devices with data processing functions.

[0083] Reference Figure 7 , Figure 7 The hardware structure diagram of the vehicle air suspension anti-shock device involved in the embodiment of the present application is as follows. In the embodiment of the present application, the vehicle air suspension anti-shock device may include a processor, a memory, a communication interface, and a communication bus.

[0084] The communication bus may be of any type and is used to interconnect the processor, memory, and communication interface.

[0085] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces, used to interconnect components within the vehicle air suspension anti-impact device, as well as interfaces used to interconnect the vehicle air suspension anti-impact device with other devices (such as other computing devices or user devices). Physical interfaces can include Ethernet, fiber optic, and ATM interfaces; user devices can include displays and keyboards.

[0086] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0087] The processor may be a general-purpose processor that can call a vehicle air suspension anti-shock program stored in a memory and execute the vehicle air suspension anti-shock method provided in the embodiments of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the vehicle air suspension anti-shock program is called can refer to the various embodiments of the vehicle air suspension anti-shock method of the present application and will not be repeated here.

[0088] Those skilled in the art will understand that Figure 7 The hardware structure shown in the figure does not constitute a limitation to the present application and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0089] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0090] The computer-readable storage medium of the present application stores a program for preventing impact of a vehicle air suspension, wherein when the program for preventing impact of a vehicle air suspension is executed by a processor, the steps of the method for preventing impact of a vehicle air suspension as described above are implemented.

[0091] Among them, the method implemented when the vehicle air suspension anti-impact program is executed can refer to the various embodiments of the vehicle air suspension anti-impact method of the present application, and will not be repeated here.

[0092] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0093] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. 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 optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit the "first", "second" and "third" to different types.

[0094] In the description of the embodiments of this application, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0095] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0096] In some processes described in the embodiments of the present application, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed in sequence or in parallel, and these operations or steps may be combined.

[0097] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of the present application.

[0098] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for preventing impact of vehicle air suspension, characterized in that: The method for preventing impact of vehicle air suspension comprises: Upon receiving a loading start signal or an unloading start signal from the vehicle, determining whether the vehicle state satisfies the conditions for activating the air suspension anti-shock operation; If the vehicle state satisfies the conditions for activating the air suspension anti-impact operation, the preset telescopic support arm is controlled to extend to form a support between the frame cross member and the axle housing, so that the impact load caused by loading or unloading is transferred between the frame cross member, the telescopic support arm and the axle housing; The determining whether the vehicle state satisfies the conditions for activating the air suspension anti-shock operation includes: If the vehicle speed is zero, the air suspension height is within a preset height range, and the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is valid, then it is determined that the vehicle state meets the conditions for activating the air suspension anti-shock operation; If the vehicle speed is greater than zero, the air suspension height exceeds the height range, or the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is invalid, it is determined that the vehicle state does not meet the conditions for starting the air suspension anti-impact operation.

2. The method for preventing impact of vehicle air suspension according to claim 1, wherein: The control of the preset telescopic support arm extending to form a support between the frame crossbeam and the axle housing also includes: The telescopic support arm pre-placed on the frame crossbeam is controlled to extend to directly contact the axle housing, so as to form support between the frame crossbeam and the axle housing.

3. The method for preventing impact of vehicle air suspension according to claim 1, wherein: The control of the preset telescopic support arm extending to form a support between the frame crossbeam and the axle housing also includes: The telescopic support arm pre-placed on the frame crossbeam is controlled to extend to directly contact the support pad provided on the axle housing, and to form indirect contact with the axle housing to form support between the frame crossbeam and the axle housing.

4. The method for preventing impact of vehicle air suspension according to claim 1, wherein: The control of the preset telescopic support arm extending to form a support between the frame crossbeam and the axle housing also includes: When the pressure between the telescopic support arm and the axle housing is greater than 0, the telescopic support arm is controlled to stop extending.

5. The method for preventing impact of vehicle air suspension according to claim 1, wherein: The control of the preset telescopic support arm extending to form a support between the frame crossbeam and the axle housing also includes: Controlling the telescopic support arm to complete the extension operation within a first time period; The first duration is calibrated based on the speed of loading and unloading. The faster the speed of loading and unloading, the shorter the first duration.

6. The method for preventing impact of vehicle air suspension according to claim 1, wherein: The method further includes: When the telescopic support arm is in the extended state, determine whether the power of the vehicle is turned off; If the vehicle power supply is not turned off and the vehicle speed is greater than zero and maintained for a second time period, the telescopic support arm is controlled to retract so that the vehicle load is transferred between the frame cross member, the air suspension and the axle housing; If the vehicle power is turned off, the telescopic support arm is controlled to maintain the current extended state, and after the vehicle power is turned on again, the telescopic support arm is controlled to retract; Wherein, the time length for controlling the telescopic support arm to complete the retraction operation is greater than or equal to a preset third time length.

7. A vehicle air suspension anti-impact device, characterized in that: The vehicle air suspension anti-shock device comprises: a judgment module, which is used to judge whether the vehicle state meets the conditions for starting the air suspension anti-impact operation when receiving a loading start signal or an unloading start signal from the vehicle; a control module configured to control a preset telescopic support arm to extend, if the vehicle state satisfies a condition for activating an air suspension anti-impact operation, to form a support between the frame cross member and the axle housing, so that an impact load caused by loading or unloading is transferred between the frame cross member, the telescopic support arm, and the axle housing; Wherein, the judgment module is further used for: If the vehicle speed is zero, the air suspension height is within a preset height range, and the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is valid, then it is determined that the vehicle state meets the conditions for activating the air suspension anti-shock operation; If the vehicle speed is greater than zero, the air suspension height exceeds the height range, or the communication signal between the execution system for controlling the extension and retraction of the telescopic support arm and the corresponding control system is invalid, it is determined that the vehicle state does not meet the conditions for starting the air suspension anti-impact operation.

8. A vehicle air suspension anti-shock device, characterized in that: The vehicle air suspension anti-impact device includes a processor, a memory, and a vehicle air suspension anti-impact program stored in the memory and executable by the processor, wherein when the vehicle air suspension anti-impact program is executed by the processor, the steps of the vehicle air suspension anti-impact method as described in any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a vehicle air suspension anti-shock program, wherein when the vehicle air suspension anti-shock program is executed by the processor, the steps of the vehicle air suspension anti-shock method according to any one of claims 1 to 6 are implemented.

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