Height-adjustable mechanical height valve control air suspension system

Abstract

The invention relates to the technical field of commercial vehicle air suspension manufacturing, in particular to a height-adjustable mechanical height valve control air suspension system which comprises four air bags, the surface of each air bag is communicated with a height valve through a pipeline, and the surface of each air bag is communicated with a second reversing valve through a pipeline. The four air bags are evenly distributed at the bottom of the vehicle, stable supporting is provided for the vehicle, meanwhile, reasonable distribution and adjustment of air in the air bags are achieved through the synergistic effect of the height valves and the reversing valves, the possibility is provided for flexible adjustment of the height of the vehicle, the requirements for the height of the vehicle in different loading and unloading scenes are met, and the practicability is high. An operator can control the height of the vehicle beyond a certain distance without directly contacting with a valve device on the vehicle, so that the convenience and safety of operation are greatly improved, and the device is particularly suitable for some loading and unloading scenes in which the space is limited and the operator is inconvenient to approach the vehicle.

Description

Technical Field

[0001] This invention relates to the field of commercial vehicle air suspension manufacturing technology, and more specifically, to a height-adjustable mechanical height valve controlled air suspension system. Background Technology

[0002] Air spring suspension is widely used in heavy-duty commercial vehicle suspensions due to its superior comfort and ease of loading and unloading. The key component of air suspension, the height control valve, is divided into mechanical and electromagnetic types. Mechanical height valve air suspension systems are cheaper than electromagnetic height valve systems, but their static height cannot be adjusted, causing inconvenience for customers loading and unloading goods. In actual use, especially during loading and unloading, the inability to flexibly adjust the vehicle height according to the cargo height and loading / unloading requirements leads to low loading and unloading efficiency and, in some cases, increases the risk of cargo damage, affecting the customer's user experience and economic benefits.

[0003] Therefore, we have made improvements to this by proposing a height-adjustable mechanical height valve-controlled air suspension system. Summary of the Invention

[0004] The purpose of this invention is to address the current problem that the vehicle height cannot be flexibly adjusted according to the height of the goods and loading and unloading requirements, resulting in low loading and unloading efficiency and, in some cases, an increased risk of damage to the goods.

[0005] To achieve the above-mentioned objectives, the present invention provides a height-adjustable mechanical height valve-controlled air suspension system to improve the aforementioned problems.

[0006] The application is as follows:

[0007] A height-adjustable mechanical height valve controlled air suspension system includes four airbags. A height valve is connected to the surface of each airbag via a pipe. A second reversing valve is connected to the surface of each airbag via a pipe. A first reversing valve is connected to the surface of the second reversing valve via a pipe. A remote controller is electrically connected to the first and second reversing valves.

[0008] As a preferred technical solution of this application, the reversing valve and the height valve are connected to an air storage tank through a pipeline, and the air storage tank is connected to a pressure protection valve through a pipeline.

[0009] As a preferred technical solution of this application, the surface of the remote control is respectively provided with a first button, a second button and a third button, the first button is for raising, the second button is for lowering, and the third button is for stopping. The remote control is used after parking.

[0010] As a preferred technical solution of this application, when the vehicle is driving normally, the reversing valve 2 is in a normally closed state, and the air circuit is connected to the airbag through the height valve. When the vehicle stops loading and unloading goods, the reversing valve 1 and the reversing valve 2 can be switched to the open position.

[0011] As a preferred technical solution of this application, a height sensor is installed on the surface of the airbag, the height sensor is electrically connected to a control system, the control system is installed inside the driver's cab, the control system is electrically connected to a data processing module, the control system is electrically connected to an alarm module, and a pressure sensor is installed on the surface of the air tank.

[0012] As a preferred technical solution of this application, the control system is electrically connected to an intelligent load sensing module. The intelligent load sensing module is installed on the vehicle frame and can sense the weight information of the goods carried by the vehicle in real time and transmit the load weight signal to the control system.

[0013] As a preferred technical solution of this application, the control system is electrically connected to a fault diagnosis and early warning module. The fault diagnosis and early warning module monitors the working status of the components in real time. When an abnormality is detected, including air leakage and reversing valve failure, it promptly issues an early warning signal to the driver.

[0014] As a preferred technical solution of this application, the fault diagnosis and early warning module includes the following steps:

[0015] S1. Sensor installation: Install the air pressure sensor at the outlet of the air tank and on one side of the air bag to monitor the internal pressure of the air tank and air bag in real time. The reversing valve is electrically connected to a current sensor and a voltage sensor to monitor the current and voltage parameters when the reversing valve is working.

[0016] S2. Electrical connection: Connect the barometric pressure sensor, current sensor, and voltage sensor to the input interface of the fault diagnosis and early warning module to ensure stable signal transmission. Use shielded cables to reduce electromagnetic interference.

[0017] S3. Data Acquisition and Processing: Write a data acquisition program, set the sampling frequency, and read the data transmitted by the sensors in real time. The pressure sensor data is collected every 100 milliseconds, and the current sensor and voltage sensor data are collected every 50 milliseconds.

[0018] S4. Gas Path Leakage Judgment: Continuously monitor the pressure changes at various points in the gas path. If the pressure drop in a certain section of the gas path exceeds the set threshold, it is determined that there is a leak in that section of the gas path.

[0019] S5. Directional control valve fault diagnosis: Monitor the current and voltage of the directional control valve during operation. If the current and voltage do not reach the normal operating range after the directional control valve receives a control signal, it is determined that the directional control valve is faulty.

[0020] S6. Wheel height judgment: When the vehicle height changes, the height valve adjusts the inflation and deflation of the airbag. If the height change fed back by the height sensor does not match the action of the height valve, it is determined that there is a fault in the vehicle.

[0021] S7. Warning: The alarm module is installed in the driver's cab. The alarm module includes an indicator light and a buzzer. When a fault is detected, the warning indicator light is illuminated and the buzzer is triggered to sound.

[0022] As a preferred technical solution of this application, the fault diagnosis and early warning module further includes the following steps:

[0023] S8. Signal Transmission: The fault diagnosis and warning module sends warning signals and fault codes to the instrument panel via the vehicle's CAN bus to ensure that the driver can receive fault notifications in a timely manner.

[0024] S9. Data storage: The fault diagnosis and early warning module is equipped with a storage device to store each detected fault information, including the fault occurrence time, fault code, and sensor data at the time of the fault.

[0025] As a preferred technical solution of this application, data analysis involves periodically analyzing the stored fault data and using data mining algorithms to identify patterns and potential causes of the faults.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] In the scheme of this application:

[0028] 1. To address the problem in existing technologies where vehicle height cannot be flexibly adjusted according to cargo height and loading / unloading requirements, resulting in low loading / unloading efficiency and, in some cases, increased risk of cargo damage, this application addresses the issue by incorporating four airbags. These airbags, evenly distributed at the bottom of the vehicle, provide stable support while the height valve and reversing valve work synergistically to achieve proper air distribution and regulation within the airbags. This allows for flexible adjustment of vehicle height, meeting the needs of different loading / unloading scenarios. Operators can control the vehicle height from a distance without direct contact with the valves, significantly improving operational convenience and safety. This is particularly suitable for loading / unloading scenarios where space is limited and operators cannot easily approach the vehicle.

[0029] 2. This application establishes a complete safety venting and pressure protection mechanism by setting up a reversing valve, a height valve, an air tank, and a pressure protection valve. When the pressure is too high, the pressure protection valve can automatically open to release excess gas, preventing damage to the airbag and other components due to excessive pressure, extending the service life of the system, and improving the safety of vehicle operation. Attached Figure Description

[0030] Figure 1 A schematic diagram of the control principle of the height-adjustable mechanical height valve-controlled air suspension system provided in this application;

[0031] Figure 2 A schematic diagram of the remote control components for the height-adjustable mechanical height valve-controlled air suspension system provided in this application;

[0032] Figure 3 A schematic diagram of the principle of the height-adjustable mechanical height valve-controlled air suspension system provided in this application.

[0033] The image shows:

[0034] 1. Airbag; 2. Height valve; 3. Reversing valve II; 4. Reversing valve I; 5. Remote control; 6. Air tank; 7. Pressure protection valve; 8. First button; 9. Second button; 10. Third button; 11. Height sensor; 12. Control system; 13. Data processing module; 14. Alarm module; 15. Fault diagnosis and early warning module; 16. Air pressure sensor; 17. Intelligent load sensing module. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] As described in the background section, the inability to flexibly adjust vehicle height according to cargo height and loading / unloading requirements leads to low loading / unloading efficiency and, in some cases, increases the risk of cargo damage.

[0037] To solve this technical problem, the present invention provides a height-adjustable mechanical height valve controlled air suspension system, including four airbags 1. The surface of the airbags 1 is connected to a height valve 2 through a pipe. The surface of the airbags 1 is connected to a second reversing valve 3 through a pipe. The surface of the second reversing valve 3 is connected to a first reversing valve 4 through a pipe. The first reversing valve 4 and the second reversing valve 3 are electrically connected to a remote controller 5.

[0038] Four airbags 1 are evenly distributed at the bottom of the vehicle, providing stable support for the vehicle. At the same time, through the coordinated action of the height valve 2 and the reversing valve, the air is reasonably distributed and regulated within the airbags 1, making it possible to flexibly adjust the vehicle height and meet the needs of different loading and unloading scenarios.

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] Example 1, please refer to Figure 1 and Figure 2 A height-adjustable mechanical height valve controlled air suspension system includes four airbags 1. A height valve 2 is connected to the surface of the airbag 1 through a pipe. A reversing valve 2 is connected to the surface of the airbag 1 through a pipe. A reversing valve 4 is connected to the surface of the reversing valve 2 through a pipe. A remote control 5 is electrically connected to the reversing valve 4 and the reversing valve 2.

[0041] Four airbags 1 are evenly distributed at the bottom of the vehicle, providing stable support for the vehicle. At the same time, through the coordinated action of the height valve 2 and the reversing valve, the air is reasonably distributed and regulated within the airbags 1, making it possible to flexibly adjust the vehicle height and meet the needs of different loading and unloading scenarios.

[0042] The reversing valve 4 and the height valve 2 are connected to the air storage tank 6 through a pipeline, and the air storage tank 6 is connected to the pressure protection valve 7 through a pipeline.

[0043] By setting up a reversing valve 2, height valve 2, air tank 6, and pressure protection valve 7, a complete safety venting and pressure protection mechanism is formed. When the pressure is too high, the pressure protection valve 7 can automatically open to release excess gas, preventing damage to the airbag 1 and other components due to excessive pressure, extending the service life of the system, and improving the safety of vehicle operation.

[0044] The surface of the remote control 5 is provided with a first button 8, a second button 9 and a third button 10. The first button 8 is for raising, the second button 9 is for lowering, and the third button 10 is for stopping. The remote control 5 is used after the vehicle is parked.

[0045] By setting up remote control 5, first button 8, second button 9 and third button 10, the operator can control the height of the vehicle from a certain distance without directly contacting the valve device on the vehicle, which greatly improves the convenience and safety of operation, and is especially suitable for loading and unloading scenarios where space is limited and it is inconvenient for operators to approach the vehicle.

[0046] When the vehicle is in normal operation, the reversing valve 2 3 is normally closed, and the air circuit is connected to the airbag 1 through the height valve 2. When the vehicle stops loading and unloading goods, the reversing valve 1 4 and the reversing valve 2 3 can switch to the open position.

[0047] During operation, the height valve 2 can automatically adjust the gas pressure inside the airbag 1 according to the vehicle's load and road conditions, maintaining a stable vehicle height, improving the smoothness and comfort of the vehicle's ride, and reducing wear on vehicle parts caused by height fluctuations. When the vehicle stops loading or unloading goods, the reversing valve 4 and the reversing valve 3 can switch positions, providing conditions for flexible adjustment of the vehicle height. The operator can control the opening and closing of the reversing valves through the remote control 5 according to the actual height of the goods to inflate and deflate the airbag 1, thereby quickly and accurately adjusting the vehicle height and greatly improving the efficiency of loading and unloading goods.

[0048] Example 2 further optimizes the height-adjustable mechanical height valve-controlled air suspension system provided in Example 1, specifically, as follows: Figure 1 Figure 2 and Figure 3 As shown, a height sensor 11 is installed on the surface of the airbag 1. The height sensor 11 is electrically connected to a control system 12. The control system 12 is installed inside the driver's cab. The control system 12 is electrically connected to a data processing module 13 and an alarm module 14. A pressure sensor 16 is installed on the surface of the air tank 6.

[0049] The height sensor 11 can sense changes in vehicle height in real time and transmit the signal to the control system 12 installed in the cab. The control system 12 adjusts the working state of the height valve 2 in a timely manner according to the received signal to achieve precise control of vehicle height, ensuring that the vehicle height is always kept within the set range, thus improving the adjustment accuracy and response speed of the air suspension system. The air pressure sensor 16 can monitor the air pressure in the air tank 6 in real time and transmit the data to the control system 12. When the air pressure is abnormal, the control system 12 can take timely measures and issue a warning signal to avoid damage caused by insufficient or excessive air pressure, thus ensuring the safe operation of the air suspension system. When an abnormal situation is detected, the alarm module 14 will promptly issue an alarm to the driver to remind the driver to pay attention to the vehicle status, giving the driver enough time to take appropriate measures to avoid accidents and improve the safety of vehicle driving.

[0050] The control system 12 is electrically connected to an intelligent load sensing module 17, which is installed on the vehicle frame and can sense the weight information of the goods carried by the vehicle in real time and transmit the load weight signal to the control system 12.

[0051] The control system 12 is electrically connected to the fault diagnosis and early warning module 15. The fault diagnosis and early warning module 15 monitors the working status of the components in real time. When an abnormality is detected, including air leakage and reversing valve failure, it promptly issues an early warning signal to the driver.

[0052] The fault diagnosis and early warning module 15 includes the following steps:

[0053] S1. Sensor installation: Install the air pressure sensor 16 at the outlet of the air tank 6 and on one side of the air bag 1 to monitor the internal pressure of the air tank 6 and the air bag 1 in real time. The reversing valve is electrically connected to a current sensor and a voltage sensor to monitor the current and voltage parameters when the reversing valve is working.

[0054] S2. Electrical connection: Connect the pressure sensor 16, current sensor and voltage sensor to the input interface of the fault diagnosis and early warning module 15 to ensure stable signal transmission. Use shielded cables to reduce electromagnetic interference.

[0055] S3. Data Acquisition and Processing: Write a data acquisition program, set the sampling frequency, and read the data transmitted by the sensors in real time. The pressure sensor data is collected every 100 milliseconds, and the current sensor and voltage sensor data are collected every 50 milliseconds.

[0056] S4. Gas Path Leakage Judgment: Continuously monitor the pressure changes at various points in the gas path. If the pressure drop in a certain section of the gas path exceeds the set threshold, it is determined that there is a leak in that section of the gas path.

[0057] S5. Directional control valve fault diagnosis: Monitor the current and voltage of the directional control valve during operation. If the current and voltage do not reach the normal operating range after the directional control valve receives a control signal, it is determined that the directional control valve is faulty.

[0058] S6. Wheel height judgment: When the vehicle height changes, the height valve 2 adjusts the inflation and deflation of the airbag 1. If the height change fed back by the height sensor 11 does not match the action of the height valve 2, it is determined that there is a fault in the vehicle.

[0059] S7. Warning: The alarm module 14 is installed in the cab. The alarm module 14 includes an indicator light and a buzzer. When a fault is detected, the warning indicator light is illuminated and the buzzer is triggered to sound.

[0060] The fault diagnosis and early warning module 15 also includes the following steps:

[0061] S8. Signal Transmission: The fault diagnosis and warning module 15 sends the warning signal and fault code to the instrument panel through the vehicle's CAN bus to ensure that the driver can receive the fault notification in a timely manner.

[0062] S9. Data storage: The fault diagnosis and early warning module 15 is equipped with a storage device to store each detected fault information, including the fault occurrence time, fault code, and sensor data at the time of the fault occurrence.

[0063] Data analysis: Regularly analyze the stored fault data and use data mining algorithms to find patterns and potential causes of the faults.

[0064] The usage process of the height-adjustable mechanical height valve-controlled air suspension system provided by this invention is as follows:

[0065] When the vehicle is in normal operation, the reversing valve 23 is normally closed, and the air circuit is connected to the airbag 1 through the solenoid valve, which is consistent with the conventional air suspension. When the vehicle stops loading and unloading goods, pressing the up and down buttons will switch the reversing valve 14 and the reversing valve 23 to the on position. The air tank 6 will inflate and deflate the airbag 1 through the reversing valve 14 and the reversing valve 23. When the frame is raised to the required height, pressing the stop button will stop the frame from rising and falling.

[0066] The height sensor 11 senses changes in the vehicle's height in real time and transmits the signal to the control system 12 installed inside the cab. The control system 12 adjusts the working state of the height valve 2 in a timely manner based on the received signal to achieve precise control of the vehicle's height. The air pressure sensor 16 can monitor the air pressure in the air tank 6 in real time and transmit the data to the control system 12. When the air pressure is abnormal, the control system 12 can take timely measures, issue a warning signal, remind the driver to pay attention to the vehicle's status, and give the driver enough time to take appropriate measures.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A height-adjustable mechanical height valve-controlled air suspension system, characterized in that, The system includes four airbags (1), and the surface of each airbag (1) is connected to a height valve (2) via a pipe. The surface of each airbag (1) is connected to a second reversing valve (3) via a pipe. The surface of the second reversing valve (3) is connected to a first reversing valve (4) via a pipe. The first reversing valve (4) and the second reversing valve (3) are electrically connected to a remote control (5).

2. The height-adjustable mechanical height valve controlled air suspension system according to claim 1, characterized in that, The reversing valve (4) and the height valve (2) are connected to an air storage tank (6) via a pipeline, and the air storage tank (6) is connected to a pressure protection valve (7) via a pipeline.

3. The height-adjustable mechanical height valve controlled air suspension system according to claim 2, characterized in that, The remote control (5) is provided with a first button (8), a second button (9) and a third button (10) on its surface. The first button (8) is for raising, the second button (9) is for lowering, and the third button (10) is for stopping. The remote control (5) is used after the vehicle is parked.

4. The height-adjustable mechanical height valve controlled air suspension system according to claim 3, characterized in that, When the vehicle is in normal operation, the reversing valve 2 (3) is in the normally closed state, and the air circuit is connected to the airbag (1) through the height valve (2). When the vehicle stops loading and unloading goods, the reversing valve 1 (4) and the reversing valve 2 (3) can switch to the open position.

5. A height-adjustable mechanical height valve controlled air suspension system according to claim 4, characterized in that, A height sensor (11) is installed on the surface of the airbag (1), the height sensor (11) is electrically connected to a control system (12), the control system (12) is installed inside the driver's cab, the control system (12) is electrically connected to a data processing module (13), the control system (12) is electrically connected to an alarm module (14), and a pressure sensor (16) is installed on the surface of the air tank (6).

6. A height-adjustable mechanical height valve controlled air suspension system according to claim 5, characterized in that, The control system (12) is electrically connected to an intelligent load sensing module (17). The intelligent load sensing module (17) is installed on the vehicle frame and can sense the weight information of the goods carried by the vehicle in real time and transmit the load weight signal to the control system (12).

7. A height-adjustable mechanical height valve controlled air suspension system according to claim 6, characterized in that, The control system (12) is electrically connected to a fault diagnosis and early warning module (15). The fault diagnosis and early warning module (15) monitors the working status of the components in real time. When an abnormal situation is detected, including air leakage and reversing valve failure, it promptly issues an early warning signal to the driver.

8. A height-adjustable mechanical height valve controlled air suspension system according to claim 7, characterized in that, The fault diagnosis and early warning module (15) includes the following steps: S1. Sensor installation: Install the air pressure sensor (16) at the outlet of the air tank (6) and on one side of the air bag (1) to monitor the internal pressure of the air tank (6) and the air bag (1) in real time. The reversing valve is electrically connected to a current sensor and a voltage sensor to monitor the current and voltage parameters when the reversing valve is working. S2, Electrical connection: Connect the barometric pressure sensor (16), current sensor and voltage sensor to the input interface of the fault diagnosis and early warning module (15) to ensure stable signal transmission. Use shielded cables to reduce electromagnetic interference. S3. Data Acquisition and Processing: Write a data acquisition program, set the sampling frequency, and read the data transmitted by the sensors in real time. The pressure sensor data is collected every 100 milliseconds, and the current sensor and voltage sensor data are collected every 50 milliseconds. S4. Gas Path Leakage Judgment: Continuously monitor the pressure changes at various points in the gas path. If the pressure drop in a certain section of the gas path exceeds the set threshold, it is determined that there is a leak in that section of the gas path. S5. Directional control valve fault diagnosis: Monitor the current and voltage of the directional control valve during operation. If the current and voltage do not reach the normal operating range after the directional control valve receives a control signal, it is determined that the directional control valve is faulty. S6. Wheel height judgment: When the vehicle height changes, the height valve (2) adjusts the inflation and deflation of the airbag 1. If the height change fed back by the height sensor (11) does not match the action of the height valve (2), it is judged that there is a fault in the vehicle. S7. Warning: The alarm module (14) is installed in the cab. The alarm module (14) includes an indicator light and a buzzer. When a fault is detected, the warning indicator light is lit and the buzzer is triggered to sound.

9. A height-adjustable mechanical height valve controlled air suspension system according to claim 8, characterized in that, The fault diagnosis and early warning module (15) also includes the following steps: S8, Signal Transmission: The fault diagnosis and warning module (15) sends the warning signal and fault code to the instrument panel through the vehicle's CAN bus to ensure that the driver can receive the fault notification in a timely manner; S9. Data storage: The fault diagnosis and early warning module (15) is equipped with a storage device to store each detected fault information, including the fault occurrence time, fault code, and sensor data at the time of the fault occurrence.

10. A height-adjustable mechanical height valve controlled air suspension system according to claim 9, characterized in that, Data analysis: Regularly analyze the stored fault data and use data mining algorithms to find patterns and potential causes of the faults.

Images