A pneumatic control system for an air spring damping device

Abstract

The utility model relates to mechanical engineering field discloses a kind of pneumatic control system of air spring damping equipment. Pneumatic control system includes gas source device, gas distribution device, detection and adjusting device, control device, multiple air springs and vibration equipment;Gas distribution device is connected with gas source device, and also connected with multiple air springs by detection and adjusting device;Multiple air springs are arranged on vibration equipment;Control device and detection and adjusting device are electrically connected, according to the real-time signal of detection and adjusting device, control air pressure regulating unit adjusts the air pressure of multiple air springs, so that the vibration equipment keeps balanced state, realizes the independent accurate control to each air spring, to adapt to different working conditions and load demand, so that vibration equipment always keeps horizontal state in working process, significantly improve the precision and stability of vibration test or screening operation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering, and in particular to a pneumatic control system for an air spring vibration damping device. Background Technology

[0002] Vibration equipment is widely used in industries such as automotive, mining, metallurgy, mold making, food, chemical, and building materials. It can be used to simulate the environment of automotive parts, toys, electronics, and other products and goods involved in transportation during transport, and to test the vibration resistance, reliability, and integrity of product structures. Simultaneously, in screening equipment, the vibration platform of the vibration equipment can transform granular and powdery materials from bulk to block or other shapes.

[0003] A typical vibration device consists of a support frame, a platform, a vibration mechanism, and a damping mechanism. The damping mechanism commonly uses two types of springs: steel springs and air springs. Among them, air springs are gradually replacing traditional steel spring structures due to their good damping performance, low noise, long service life, and minimal maintenance requirements.

[0004] Air spring vibration damping systems are widely used in the vibration protection of precision machinery, testing platforms, and vibration-sensitive devices due to their excellent damping effect and adjustability. However, in practical applications, the constantly changing mass and center of gravity of the vibrating material cause variations in the load-bearing pressure and height of the air spring, necessitating frequent shutdowns for adjustment and significantly impacting work efficiency.

[0005] In traditional air spring vibration damping systems, air pressure control typically employs mechanical pressure regulating valves or simple solenoid valves. This control method has significant limitations when facing different operating conditions and load variations. When the load on the vibrating equipment changes, conventional control systems cannot effectively adjust the air pressure in real time, leading to unstable vibration damping effects. In particular, when the load on the vibrating equipment changes during operation, conventional control systems react sluggishly, making it difficult to maintain the equipment's balance and severely impacting the accuracy of precision machining or measurement.

[0006] Currently, existing air spring pneumatic control systems cannot automatically adjust the pressure and height of air springs at all operating positions in real time during vibration, nor can they monitor the pressure and operating status of air springs in real time. This results in the air springs being unable to maintain optimal operating conditions when the load changes during the operation of vibrating equipment, affecting the performance and service life of the vibrating equipment.

[0007] Furthermore, existing air spring vibration damping devices often lack the ability to coordinate and control multiple air springs, making it difficult to ensure the overall balance of the vibrating equipment. When the load on multiple support points is unevenly distributed, traditional control methods cannot provide independent and precise control for each support point, which can easily lead to equipment tilting and affect working accuracy. Utility Model Content

[0008] The purpose of this invention is to provide a pneumatic control system for an air spring vibration damping device, which enables precise control of the air pressure and height of multiple air springs, maintaining the balance of the vibrating device during operation.

[0009] To solve the above-mentioned technical problems, this utility model provides a pneumatic control system for an air spring vibration damping device.

[0010] On the one hand, the pneumatic control system of the air spring vibration damping equipment includes an air source device, a gas distribution device, a detection and adjustment device, a control device, multiple air springs, and vibration equipment; The gas distribution device is connected to the gas source device and also to the plurality of air springs through the detection and adjustment device; the plurality of air springs are installed on the vibrating device; The detection and adjustment device includes a pressure detection unit, a height detection unit, and an air pressure adjustment unit. The air inlet of the air pressure regulating unit is connected to the air outlet of the gas distribution device, and the air outlet of the air pressure regulating unit is connected to the air inlet of the plurality of air springs; the pressure detection unit is disposed in the air path between the air pressure regulating unit and the plurality of air springs; the height detection unit is connected to the plurality of air springs. The control device is electrically connected to the pressure detection unit, the height detection unit, and the air pressure regulating unit respectively. Based on the real-time signals from the pressure detection unit and the height detection unit, the control device controls the air pressure regulating unit to adjust the air pressure of the multiple air springs, so that the vibration equipment remains in a balanced state.

[0011] Furthermore, the air source device includes an air compressor and an air storage tank, with the air inlet of the air storage tank connected to the air outlet of the air compressor.

[0012] Furthermore, the gas distribution device includes a compressed air distributor, the air inlet of which is connected to the air outlet of the gas storage tank; and the compressed air distributor has multiple independently controllable air outlets.

[0013] Furthermore, the air pressure regulating unit includes multiple proportional valves, the number of which is the same as the number of air springs, and each proportional valve corresponds to one air spring; The air inlet of each proportional valve is connected to the corresponding air outlet of the compressed air distributor, the air outlet of each proportional valve is connected to the corresponding air spring through a pneumatic pipeline, and the control terminal of each proportional valve is electrically connected to the control device.

[0014] Furthermore, the pressure detection unit includes multiple pressure sensors, the number of which is the same as the number of air springs, and each pressure sensor corresponds to one air spring and one proportional valve; Each pressure sensor is installed on the pneumatic pipeline between the corresponding proportional valve and the air spring, and each pressure sensor is also electrically connected to the control device to detect the air pressure of the corresponding air spring and transmit the signal to the control device.

[0015] Furthermore, the height detection unit includes multiple height sensors, the number of which is the same as the number of air springs, and each height sensor corresponds to one air spring; Each of the height sensors is connected to the corresponding air spring and is also electrically connected to the control device, for detecting the height of the corresponding air spring and transmitting the signal to the control device.

[0016] Furthermore, the control device includes a PLC controller, a host computer, a touch control screen, and an alarm; the host computer is electrically connected to the PLC controller and is used for program setting and data processing of the pneumatic control system; the touch control screen is electrically connected to the PLC controller and is used for human-machine interaction; the alarm is electrically connected to the PLC controller and issues an alarm when the parameters of the pneumatic control system are abnormal.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: The pneumatic control system of the air spring vibration damping device proposed in this utility model monitors the air pressure and height of multiple air springs in real time through a pressure detection unit and a height detection unit. The PLC controller adjusts the opening of multiple proportional valves in the air pressure regulation unit in real time according to the detection signals, realizing independent and precise control of each air spring to adapt to different working conditions and load requirements. This ensures that the vibration device always maintains a horizontal state during operation, significantly improving the accuracy and stability of vibration testing or screening operations.

[0018] Furthermore, the pneumatic control system proposed in this invention, through a touch control screen and a host computer, enables both local and remote operation, and allows selection of a constant pressure mode or a constant height mode. It also monitors the working pressure or height of the air spring in real time during the operation of the vibrating equipment, issuing an alarm signal when the actual pressure or height value of the air spring exceeds the set value. Simultaneously, through the human-machine interface of the touch control screen, operators can easily view the system's operating status, set control parameters, and query historical data, greatly improving the system's operability.

[0019] Furthermore, this invention simplifies the types and quantities of pneumatic control components for vibration equipment. The compressed air pressure can be changed and switched on / off via a PLC controller and proportional valve, resulting in a simple system structure that is easy to install and maintain, thereby reducing the overall system complexity and manufacturing cost. Simultaneously, the number of air springs can be flexibly configured according to the load requirements of different areas of the vibration equipment, satisfying both support and vibration damping needs while avoiding resource waste. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the pneumatic control system of the air spring vibration damping device in one embodiment of the present invention; Figure 2 This is a flowchart of the pneumatic control method for an air spring vibration damping device in one embodiment of the present invention.

[0021] Reference numerals: 1. Air compressor; 2. Air tank; 3. Compressed air distributor; 4. PLC controller; 5. Vibration equipment; 6. Proportional valve; 7. Pressure sensor; 8. Air spring; 9. Height sensor; 10. Host computer; 11. Touch screen control panel; 12. Alarm; 13. Pneumatic pipeline. Detailed Implementation

[0022] Based on the teachings of this specification, those skilled in the art can form new technical solutions by combining different implementation methods without creating technical contradictions. Such variations should be considered to fall within the protection scope of this patent.

[0023] The pneumatic control system of an air spring vibration damping device according to this utility model will be described in more detail below with reference to the schematic diagram, which illustrates the preferred embodiment of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving the advantageous effects of this utility model. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit this utility model.

[0024] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0025] Example 1 like Figure 1 As shown, this utility model proposes a pneumatic control system for an air spring vibration damping device. The pneumatic control system includes an air source device, a gas distribution device, a detection and adjustment device, a control device, multiple air springs 8, and a vibration device 5.

[0026] Specifically, the gas distribution device is connected to both the gas source device and the plurality of air springs 8 via the detection and adjustment device; the plurality of air springs 8 are mounted on the vibration device 5. Gas originates from the gas source device, is distributed by the gas distribution device, and then its parameters are detected and its pressure is adjusted by the detection and adjustment device before finally entering the individual air springs 8, thereby providing support and vibration damping for the vibration device 5.

[0027] The detection and adjustment device includes a pressure detection unit, a height detection unit, and an air pressure adjustment unit. The pressure detection unit monitors the air pressure status of each air spring 8 in real time, the height detection unit monitors the height status of each air spring 8 in real time, and the air pressure adjustment unit adjusts the air pressure of each air spring 8 according to instructions from the control device. The air inlet of the air pressure adjustment unit is connected to the air outlet of the gas distribution device, and the air outlet of the air pressure adjustment unit is connected to the air inlets of the multiple air springs 8, thereby allowing the air pressure adjustment unit to precisely control the amount of gas entering each air spring 8. The pressure detection unit is installed on the pneumatic pipeline 13 between the air pressure adjustment unit and the multiple air springs 8, facilitating direct measurement of the air pressure value entering the air springs 8. The height detection unit is connected to the multiple air springs 8, facilitating real-time monitoring of the working height of each air spring 8.

[0028] The control device is electrically connected to the pressure detection unit, the height detection unit, and the air pressure regulating unit respectively. Based on the real-time signals from the pressure detection unit and the height detection unit, the control device controls the air pressure regulating unit to adjust the air pressure of the multiple air springs 8 so that the vibration device 5 remains in a balanced state.

[0029] In this embodiment, the air source device includes an air compressor 1 and an air storage tank 2, with the air inlet of the air storage tank 2 connected to the air outlet of the air compressor 1. The air compressor 1, driven by its own motor, draws in and compresses air, increasing its pressure to provide a power source for the subsequent pneumatic control system. The air storage tank 2 stores compressed air, acting as a buffer and stabilizing air pressure. When the compressed air pressure output by the air compressor 1 fluctuates, the air storage tank 2 can store a portion of the high-pressure gas, releasing it when needed to ensure relative pressure stability in the pneumatic system.

[0030] In this embodiment, the gas distribution device includes a compressed air distributor 3, the inlet of which is connected to the outlet of the air storage tank 2; and the compressed air distributor 3 has multiple independently controllable outlets. These multiple independently controllable outlets enable the pneumatic control system to simultaneously support multiple devices or multiple working areas. Each outlet can independently adjust its air pressure and flow rate to meet the different compressed air requirements of different devices or areas.

[0031] In this embodiment, the air pressure regulating unit includes multiple proportional valves 6, the number of which is the same as the number of air springs 8. Each proportional valve 6 corresponds to one air spring 8, allowing the air pressure of each air spring 8 to be adjusted independently. During the operation of the vibration equipment 5, air springs 8 at different positions may require different air pressure and height adjustments due to load changes. Through the independent control of the proportional valves 6, the air pressure and height of each air spring 8 can be adjusted in real time to meet the working requirements under different positions and load conditions.

[0032] Specifically, the inlet of each proportional valve 6 is connected to the corresponding outlet of the compressed air distributor 3, and the outlet of each proportional valve 6 is connected to the corresponding air spring 8 via a pneumatic pipeline 13. Furthermore, the control terminal of each proportional valve 6 is electrically connected to the control device. Under the control of the control device, the proportional valve 6 precisely adjusts the air pressure at its outlet, ensuring that the operating state of each air spring 8 meets the set requirements. For example, when the height of an air spring 8 changes, the control device sends a signal to the corresponding proportional valve 6 based on data from the height sensor 9, adjusting the output pressure to restore the air spring 8 to the set height.

[0033] In this embodiment, the pressure detection unit includes multiple pressure sensors 7, the number of which is the same as the number of air springs 8. Each pressure sensor 7 corresponds to one air spring 8 and one proportional valve 6. The pressure sensor 7 converts the detected air pressure signal into an electrical signal and transmits it to the control device. Based on the received real-time data, the control device precisely adjusts the output pressure of the proportional valve 6 so that the air pressure of each air spring 8 meets the set value.

[0034] Specifically, each pressure sensor 7 is installed on the pneumatic pipeline 13 between the corresponding proportional valve 6 and the air spring 8, and each pressure sensor 7 is also electrically connected to the control device to detect the air pressure of the corresponding air spring 8 and transmit the signal to the control device. The control device receives the signal from the pressure sensor 7 and compares it with a set value. If the detected air pressure deviates from the set value, the control device immediately sends a signal to the corresponding proportional valve 6 to adjust the output pressure, so that the air pressure of the air spring 8 returns to the set value.

[0035] In this embodiment, the height detection unit includes multiple height sensors 9, the number of which is the same as the number of air springs 8. Each height sensor 9 corresponds to one air spring 8, facilitating the detection of the height of each air spring 8 through the height sensors 9. The height sensors 9 convert the detected height signal into an electrical signal and transmit it to the control device. The control device precisely adjusts the output pressure of the proportional valve 6 based on the received real-time data, ensuring that the height of each air spring 8 conforms to a set value.

[0036] Specifically, each height sensor 9 is connected to the corresponding air spring 8 and electrically connected to the control device, for detecting the height of the corresponding air spring 8 and transmitting the signal to the control device. The control device receives the signal from the height sensor 9 and compares it with a set value. If the detected height deviates from the set value, the control device immediately sends a signal to the corresponding proportional valve 6 to adjust the output pressure, so that the height of the air spring 8 returns to the set value.

[0037] In one specific embodiment, four air springs 8 are arranged at the four corners of the vibration device. In practical applications, the number and layout of the air springs 8 can be flexibly configured according to the structural characteristics and operational requirements of the vibration device 5. For small, lightly loaded equipment, four air springs 8 can be used for support; for large, heavy-load equipment, eight or even more air springs 8 can be used to provide sufficient support force and better vibration damping. In the heavy-load area of ​​the vibration device 5, the number of air springs 8 can be increased or air springs 8 with a larger load-bearing capacity can be selected; in the light-load area, the number of air springs 8 can be reduced or smaller-sized air springs 8 can be selected.

[0038] Accordingly, there are four of each of the proportional valve 6, the pressure sensor 7, and the height sensor 9.

[0039] In this embodiment, the control device includes a PLC controller 4, a host computer 10, a touch control screen 11, and an alarm 12; the host computer 10 is electrically connected to the PLC controller 4 and is used for program setting and data processing of the pneumatic control system; the touch control screen 11 is electrically connected to the PLC controller 4 and is used for human-machine interaction; the alarm 12 is electrically connected to the PLC controller 4 and issues an alarm when the parameters of the pneumatic control system are abnormal.

[0040] When the pneumatic control system is in operation, the host computer 10 and the touch control screen 11 display the set pressure values ​​and real-time pressure values ​​of the four sets of air springs 8 of the vibration device 5. When the pressure of any set of air springs 8 drops and reaches the alarm pressure value, the host computer 10 and the touch control screen 11 will issue an alarm signal. At the same time, the PLC controller 4 will send an alarm signal to the alarm device 12, triggering the alarm device 12 to alert the operator. Simultaneously, the PLC controller 4 will send a signal to the proportional valve 6 of the set pressure drop, continuously supplying air to the corresponding air spring 8 according to the set pressure until the real-time pressure value returns to the set pressure value.

[0041] In addition, operators can view alarm records and historical pressure curves through the host computer 10 and the touch control screen 11.

[0042] Example 2 like Figure 2 As shown, a specific embodiment illustrates the control method of the pneumatic control system in Embodiment 1. The control method specifically includes: S1, PLC controller 4 acquires the air pressure signals of multiple air springs 8 detected by the pressure detection unit and the height signals of multiple air springs 8 detected by the height detection unit.

[0043] In step S1, each pressure sensor 7 detects the air pressure of the corresponding air spring 8 in real time, and each height sensor 9 detects the height of the corresponding air spring 8 in real time, and transmits the detected signals to the PLC controller 4.

[0044] S2. The PLC controller 4 analyzes and processes the air pressure signal and the height signal according to the preset control mode. The control mode includes a constant pressure control mode and a constant height control mode. The constant pressure control mode is suitable for situations where the material mass and center of gravity on the vibrating device 5 change very little, while the constant height control mode is suitable for situations where the material mass and center of gravity on the vibrating device 5 change in real time and change significantly during continuous operation. In this case, the constant pressure control mode cannot maintain the vibrating device 5 at a horizontal position or a set angle.

[0045] In step S2, the operator can select the control mode via the touch control screen 11. In constant pressure control mode, the PLC controller 4 primarily processes the air pressure signal, aiming to maintain the air pressure of each air spring 8 at a set value. In constant height control mode, the PLC controller 4 primarily processes the height signal, aiming to maintain the height of each air spring 8 at a set value. The PLC controller 4 can internally employ a PID control algorithm to generate a control output signal based on the deviation between the measured value and the set value.

[0046] S3. The PLC controller 4 generates control signals based on the analysis and processing results and sends them to multiple proportional valves 6 of the air pressure regulating unit to control the opening degree of the multiple proportional valves 6.

[0047] S4. The air pressure of the multiple air springs 8 is adjusted by the multiple proportional valves 6 so that the vibration device 5 remains in a balanced state.

[0048] In step S4, each proportional valve 6 adjusts its opening degree according to the received control signal, changing the output air pressure and thus regulating the air pressure of the corresponding air spring 8. Through coordinated control of multiple air springs 8, the vibration device 5 is kept in a horizontal and balanced state. The system coordinates the control of multiple air springs 8; when the vibration device 5 is detected to be tilted (i.e., the heights of the support points are inconsistent), the PLC controller 4 adjusts the air pressure of each air spring 8 to restore the vibration device 5 to a horizontal state.

[0049] In this embodiment, when the constant pressure control mode is selected, the pneumatic control method includes: The PLC controller 4 acquires the air pressure signals of the multiple air springs 8 detected by the pressure detection unit, and compares the air pressure signals with the preset target air pressure value.

[0050] When the air pressure signal corresponding to a certain air spring 8 is lower than the target air pressure value, the PLC controller 4 controls the corresponding proportional valve 6 to increase the opening degree, thereby increasing the air pressure of the corresponding air spring 8.

[0051] When the air pressure signal corresponding to a certain air spring 8 is higher than the target air pressure value, the PLC controller 4 controls the corresponding proportional valve 6 to reduce the opening degree, thereby reducing the air pressure of the corresponding air spring 8, and finally maintaining the air pressure of the air spring 8 at the target air pressure value.

[0052] The target air pressure value can be set through the touch control screen 11 or automatically calculated by the PLC controller 4 according to the load status of the vibration equipment 5.

[0053] In this embodiment, when the constant altitude control mode is selected, the pneumatic control method includes: The PLC controller 4 acquires the height signals of the multiple air springs 8 detected by the height detection unit and compares the height signals with the preset target height value.

[0054] When the height signal corresponding to a certain air spring 8 is lower than the target height value, the PLC controller 4 controls the corresponding proportional valve 6 to increase its opening, thereby increasing the air pressure of the corresponding air spring 8 and causing the height to rise.

[0055] When the height signal corresponding to a certain air spring 8 is higher than the target height value, the PLC controller 4 controls the corresponding proportional valve 6 to reduce the opening, reduce the air pressure of the corresponding air spring 8, and lower the height, so that the height of the multiple air springs 8 is maintained at the target height value.

[0056] It should be noted that when the pneumatic control system starts working, the PLC controller 4 will first perform a series of initialization operations, reading the exhaust pressure of the air compressor 1 and the storage pressure of the air tank 2 to determine whether the air source pressure is within the normal operating range required by the system. If the air source pressure is not within the normal range, the system will fail to start normally and will issue a corresponding alarm signal, prompting the operator to check the air compressor 1 and the air tank 2 to ensure a stable and reliable air supply that meets the basic requirements for system operation.

[0057] After confirming that the air source pressure is normal, the PLC controller 4 will detect the air pressure changes in each pneumatic pipeline 13 through the pressure sensor 7. If there is a leak, blockage, or other abnormal connection problem in a certain section of pneumatic pipeline 13, the air pressure change detected by the pressure sensor 7 will be significantly different from the normal situation. The PLC controller 4 will determine whether the pneumatic pipeline 13 is properly connected based on these differences. Only when all pneumatic pipelines 13 are properly connected will subsequent operations continue.

[0058] Finally, the PLC controller 4 reads the signals from each pressure sensor 7 and each height sensor 9, and performs a self-test on each of them. If any sensor is found to be malfunctioning, the PLC controller 4 will also issue an alarm signal, instructing the operator to repair or replace the faulty sensor.

[0059] Only when all the above test results are normal, that is, the air source pressure is appropriate, the pneumatic pipeline 13 is connected correctly, and all test units are working properly, will the pneumatic control system smoothly enter the normal working state and begin to execute the predetermined control and regulation tasks.

[0060] In summary, the pneumatic control system of the air spring vibration damping device proposed in this utility model monitors the air pressure and height of multiple air springs in real time through a pressure detection unit and a height detection unit. The PLC controller adjusts the opening of multiple proportional valves in the air pressure regulating unit in real time according to the detection signals, realizing independent and precise control of each air spring to adapt to different working conditions and load requirements. This ensures that the vibration equipment always maintains a horizontal state during operation, significantly improving the accuracy and stability of vibration testing or screening operations.

[0061] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pneumatic control system for an air spring vibration damping device, characterized in that, It includes a gas source device, a gas distribution device, a detection and regulation device, a control device, multiple air springs, and a vibration device; The gas distribution device is connected to the gas source device and also to the plurality of air springs through the detection and adjustment device; the plurality of air springs are installed on the vibrating device; The detection and adjustment device includes a pressure detection unit, a height detection unit, and an air pressure adjustment unit. The air inlet of the air pressure regulating unit is connected to the air outlet of the gas distribution device, and the air outlet of the air pressure regulating unit is connected to the air inlet of the plurality of air springs; the pressure detection unit is disposed in the air path between the air pressure regulating unit and the plurality of air springs; the height detection unit is connected to the plurality of air springs. The control device is electrically connected to the pressure detection unit, the height detection unit, and the air pressure regulating unit respectively. Based on the real-time signals from the pressure detection unit and the height detection unit, the control device controls the air pressure regulating unit to adjust the air pressure of the multiple air springs, so that the vibration equipment remains in a balanced state.

2. The pneumatic control system of the air spring vibration damping device as described in claim 1, characterized in that, The air source device includes an air compressor and an air storage tank, with the air inlet of the air storage tank connected to the air outlet of the air compressor.

3. The pneumatic control system of the air spring vibration damping device as described in claim 2, characterized in that, The gas distribution device includes a compressed air distributor, the air inlet of which is connected to the air outlet of the gas storage tank; and the compressed air distributor has multiple independently controllable air outlets.

4. The pneumatic control system of the air spring vibration damping device as described in claim 1, characterized in that, The air pressure regulating unit includes multiple proportional valves, the number of which is the same as the number of air springs, and each proportional valve corresponds to one air spring. The air inlet of each proportional valve is connected to the corresponding air outlet of the compressed air distributor, the air outlet of each proportional valve is connected to the corresponding air spring through a pneumatic pipeline, and the control terminal of each proportional valve is electrically connected to the control device.

5. The pneumatic control system of the air spring vibration damping device as described in claim 4, characterized in that, The pressure detection unit includes multiple pressure sensors, the number of which is the same as the number of air springs, and each pressure sensor corresponds to one air spring and one proportional valve. Each pressure sensor is installed on the pneumatic pipeline between the corresponding proportional valve and the air spring, and each pressure sensor is also electrically connected to the control device to detect the air pressure of the corresponding air spring and transmit the signal to the control device.

6. The pneumatic control system of the air spring vibration damping device as described in claim 1, characterized in that, The height detection unit includes multiple height sensors, the number of which is the same as the number of air springs, and each height sensor corresponds to one air spring. Each of the height sensors is connected to the corresponding air spring and is also electrically connected to the control device, for detecting the height of the corresponding air spring and transmitting the signal to the control device.

7. The pneumatic control system of the air spring vibration damping device as described in claim 1, characterized in that, The control device includes a PLC controller, a host computer, a touch control screen, and an alarm; the host computer is electrically connected to the PLC controller and is used for program setting and data processing of the pneumatic control system; the touch control screen is electrically connected to the PLC controller and is used for human-machine interaction; the alarm is electrically connected to the PLC controller and issues an alarm when the parameters of the pneumatic control system are abnormal.

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