Suspension air supply module valve body piston characteristic detection mechanism and method

Abstract

This invention discloses a mechanism and method for detecting the piston characteristics of a suspension air supply module valve body, belonging to the field of automotive suspension system testing technology. This mechanism achieves fully automated detection of the valve body piston stroke and torque through the coordinated operation of a modularly designed conveying component, drive component, and detection component. A conveyor rail horizontally transports a pallet to the testing station. The drive component precisely lifts the valve body using a lifting cylinder and guide pins. The detection component simultaneously collects dynamic piston data using displacement and torque sensors. This invention solves the problems of low efficiency and poor accuracy in manual testing. Through automated positioning, data acquisition, and RFID information traceability, it ensures the stroke accuracy, sealing performance, and dynamic response characteristics of the piston's inflation and deflation actions, effectively improving the quality control efficiency and reliability of the air suspension valve body and meeting the stability requirements of the vehicle height adjustment system.

Description

Technical Field

[0001] This invention belongs to the field of automotive suspension system testing technology, specifically relating to a mechanism and method for testing the characteristics of the piston in the valve body of a suspension air supply module. Background Technology

[0002] In automotive air suspension systems, the piston dynamics (such as stroke accuracy, torque, and sealing) of the air supply module (ASU) valve body directly affect the stability of vehicle height adjustment. Traditional testing relies on manual piston operation and displacement measurement, which suffers from low efficiency, susceptibility to environmental interference, poor repeatability, and difficulty in simultaneously acquiring torque data, leading to insufficient consistency in valve body component quality control. Existing technology CN118999438A discloses a testing device for ASU valve cores, capable of detecting valve core tilt, but further research is needed on the dynamic performance of the valve body piston. Furthermore, some other equipment lacks automated positioning and batch testing capabilities, failing to meet the demands of high-precision, high-cycle production lines. Insufficient methods for detecting the matching of piston stroke with the opening and closing states of the air intake and exhaust ports can easily lead to the risk of air spring pressure runaway. Therefore, there is an urgent need to develop a solution integrating automated conveying, precise positioning, and multi-parameter synchronous testing to improve the testing efficiency and reliability of valve body components. Summary of the Invention

[0003] The present invention aims to automate the detection of piston stroke and torque of the valve body of the air supply module in automotive suspension, thereby improving efficiency and reliability and ensuring the stability of air spring pressure regulation.

[0004] A suspension air supply module valve body piston characteristic detection mechanism includes a conveying component, a driving component, and a detection component. The conveying component includes a conveying rail with a tray placed on it. The valve body assembly is fixed on the tray. The driving component is connected below the conveying component. The conveying rail drives the tray to move horizontally. The driving component includes a lifting plate that can be inserted into the tray to drive the tray to move vertically. The detection component includes a displacement sensor to detect the stroke of the moving parts inside the valve body assembly. The piston of the valve body in the automotive suspension air supply module (ASU) is the core actuator controlling airflow. When the vehicle body needs to be raised, the piston moves to open the inflation port, allowing high-pressure gas to enter the air spring from the air tank, causing the spring to expand. When the vehicle body needs to be lowered, the piston moves to close the inflation port and open the exhaust port, allowing gas in the air spring to be discharged to the atmosphere or return to the air tank. The position of the piston directly determines the stability of the air spring pressure. When the vehicle body reaches a preset height, the piston blocks the inflation port, stopping the gas flow, thereby maintaining the vehicle height and spring stiffness. This mechanism achieves dynamic adjustment through sensor feedback signals and electronic control unit control. This device is used to test the stroke and torque of the piston in the ASU valve body assembly. A conveyor rail can transport valve body assemblies in batches, and a drive assembly moves them to the testing area of ​​a testing assembly for inspection. The testing assembly measures the stroke and torque of the piston inside the valve body assembly. Through the modular design of the conveyor, drive, and testing assemblies working together, fully automated testing of the air suspension valve body piston stroke and torque is achieved, solving the problems of low efficiency and susceptibility to environmental interference associated with traditional manual testing. A standardized testing process is established to address the core requirements of the ASU valve body's piston dynamic performance (such as the accuracy of inflation / exhaust port opening and closing, and sealing), ensuring the real-time performance and stability of air spring pressure regulation and meeting the reliability requirements of the vehicle height control system.

[0005] A suspension air supply module valve body piston characteristic testing mechanism is disclosed. The tray surface has a positioning groove with at least two positioning pins, and a first notch is located at the center of the positioning groove. The positioning groove and the double positioning pins are designed to engage with positioning pin holes at the bottom of the valve body base. This geometric constraint enables multi-degree-of-freedom limiting of the valve body assembly, preventing test reference deviations caused by vibration or mechanical impact.

[0006] A suspension air supply module valve body piston characteristic detection mechanism includes a conveying component with a stopper fixed to the side of the conveying track. The stopper is used to block the tray, ensuring that the tray stops above the drive component, facilitating the drive component to move the tray and valve body component to the sensing area in subsequent steps, preventing the tray from sliding or shifting during the detection process, and ensuring the continuity of the process.

[0007] A suspension air supply module valve body piston characteristic detection mechanism includes a drive assembly comprising at least two lifting cylinders. A lifting base plate is fixedly connected above the lifting cylinders, and a lifting support plate is connected above the lifting base plate. The lifting support plate has at least two guide pins, and the edge of the tray has guide holes equal in number to the guide pins, into which the guide pins can extend. When the conveying assembly moves the valve body assembly directly above the drive assembly, the lifting cylinders drive the lifting base plate to rise vertically. The lifting base plate then moves the lifting support plate upward, and the guide pins on the lifting support plate insert into the guide holes of the tray. The drive assembly then lifts the tray and valve body assembly vertically upward. The cooperation of the guide pins and guide holes ensures that the tray remains stable during lifting without violent shaking, guaranteeing that the tray can finally enter the detection area of ​​the detection assembly for alignment.

[0008] A suspension air supply module valve body piston characteristic detection mechanism includes an RFID (Contactless Automatic Identification) reader on a lifting plate and a chip mounting base on the tray base. The RFID reader reads data from the chip in the mounting base. When the guide pin of the lifting plate is inserted into the guide hole of the tray, the RFID reader simultaneously interacts with the chip in the chip mounting base of the tray base, realizing the identification of the tray and valve body components and automatic data entry. This reduces manual operation, improves the intelligence level of the entire device's detection process, supports the traceability and management of valve body components on each tray, and reads batch data of parts while the drive component drives the tray, optimizing the steps of manually inspecting batches of valve body components and improving the efficiency of multi-batch parts inspection.

[0009] A suspension air supply module valve body piston characteristic detection mechanism includes a lifting cylinder fixedly connected to the bottom of a lifting support plate, a moving rod inside the lifting cylinder, a moving rod fixedly connected to a motor, a second notch in the center of the lifting base plate that can accommodate the motor to pass through, a motor shaft, a circular notch on the long edge of the lifting support plate that can accommodate the motor shaft to pass through, and a torque sensor on the side of the motor shaft.

[0010] A suspension air supply module valve body piston characteristic testing mechanism is disclosed. The valve body assembly includes a valve body base with an insertion port at the bottom for inserting a motor shaft. The valve body base has at least two locating pin holes that engage with locating pins. After a lifting plate is moved to the testing area of ​​the testing component, a lifting cylinder is activated, and a moving rod drives the motor upward. The motor shaft passes through a second notch and a circular notch, finally inserting into the insertion port of the valve body base. The motor starts, and the motor shaft drives the piston inside the valve body to move. A torque sensor records the torque data of the motor shaft, and the testing component detects the piston displacement stroke. By using the torque and displacement data, the characteristics of the valve body assembly are detected, its dynamic response characteristics are verified, and the resistance characteristics of the piston during air spring inflation and deflation are evaluated, ensuring valve body sealing and operational reliability. The insertion port of the valve body base matches the motor shaft, ensuring the stability and alignment of power transmission and preventing measurement errors or equipment damage due to power transmission deviations during testing.

[0011] A suspension air supply module valve body piston characteristic detection mechanism includes a support frame with a slide rail. Two displacement sensors are symmetrically mounted on the slide rail and slidably connected to it. The displacement sensors adjust their positions via the slide rail to directly measure the piston's stroke data, reflecting its range of motion and accuracy. The displacement sensors verify whether the piston can complete the inflation / deflation action within a preset stroke, ensuring the stability of the air spring pressure regulation.

[0012] A suspension air supply module valve body piston characteristic detection mechanism includes a displacement sensor with a sensing head, and a valve body assembly comprising a valve body with two symmetrically arranged valve ports. A piston that moves along its central axis is disposed within each valve port. The sensing head can extend into the valve port to directly detect the piston's movement trajectory, avoiding errors caused by indirect measurements. Detecting the piston stroke ensures precise matching between the piston position and the opening / closing state of the air inlet / outlet, maintaining the reliability of vehicle height control.

[0013] A method for detecting the piston characteristics of a suspension air supply module valve body is disclosed. First, a conveying assembly is activated to transport a tray and valve body assembly directly above a drive assembly. Second, the drive assembly's lifting plate engages with the tray, raising the valve body on the tray to the sensor head's detection area, aligning the valve port with the sensor head's central axis. Third, the displacement sensor's position is adjusted via a slide rail, allowing the sensor head to extend into the valve port. Fourth, the drive assembly is activated to move the piston inside the valve body, and the displacement sensor reads the piston's displacement data. Finally, the displacement sensor retracts from the sensor head, and the drive assembly moves the valve body assembly back onto the conveying track. This detection method achieves efficient batch detection of valve body piston characteristics through fully automated operation (conveyance, positioning, detection, and return). It solves the problems of long processing times and high labor costs associated with traditional detection methods, improving production line efficiency and standardization. This device, through modular design (conveyance, drive, detection) and automated processes, addresses the accuracy, efficiency, and reliability issues in the piston detection of air suspension valve bodies. The technical solution closely revolves around core performance parameters such as piston stroke, torque, and sealing, and combined with intelligent data management, it can significantly improve the quality control level of the air suspension system.

[0014] The advantages of this invention are as follows: Through a modularly designed fully automated testing process, it integrates conveying, driving, and testing components, and combines dual positioning pins, guide pins, and RFID data traceability technology to achieve efficient and accurate measurement of valve body piston stroke and torque. By using displacement and torque sensors to synchronously collect piston dynamic parameters, it solves the problems of low efficiency, poor accuracy, and environmental interference associated with manual testing. Its anti-interference modular structure ensures testing stability, while RFID information binding enables quality traceability, significantly improving the quality control efficiency and reliability of air suspension valve body components, meeting the needs of high-speed production lines. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall assembly of the present invention.

[0017] Figure 2 This is a schematic diagram of the track and tray of the present invention.

[0018] Figure 3 This is an exploded view of the driving component of the present invention.

[0019] Figure 4This is an exploded view of one side of the lifting cylinder of the drive component of the present invention.

[0020] Figure 5 This is a schematic diagram of the bottom of the tray of the present invention.

[0021] Figure 6 This is a schematic diagram of the valve body assembly of the present invention.

[0022] Figure 7 This is a schematic diagram of the detection component and valve body component of the present invention.

[0023] Figure Descriptions: 1-Conveying assembly, 2-Drive assembly, 3-Detection assembly, 4-Valve body assembly, 11-Conveying track, 12-Tray, 13-Blocker, 41-Valve body, 412-Piston, 121-Positioning groove, 122-Positioning pin, 123-First notch, 21-Lifting cylinder, 22-Lifting base plate, 23-Lifting support plate, 231-Guide pin, 124-Guide hole, 233-RFID reader / writer, 125-Chip mounting base, 25-Lifting cylinder, 251-Moving rod, 24-Motor, 221-Second notch, 232-Circular notch, 241-Torque sensor, 42-Valve body base, 421-Insert port, 422-Positioning pin hole, 31-Support frame, 32-Slide rail, 33-Displacement sensor, 331-Sensing head, 411-Valve port. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0025] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Example 1:

[0027] See attached document Figure 1 Appendix Figure 2 Appendix Figure 6As shown, a suspension air supply module valve body piston characteristic detection mechanism includes a conveying assembly 1, a driving assembly 2, and a detection assembly 3. The conveying assembly 1 includes a conveying rail 11, on which a tray 12 is placed. A valve body assembly 4 is fixed on the tray 12. The driving assembly 2 is connected below the conveying assembly 1. The conveying rail 11 is used to drive the tray 12 to move horizontally. The driving assembly 2 includes a lifting plate 23, which can be inserted into the tray 12 to drive the tray 12 to move vertically. The detection assembly 3 includes a displacement sensor 33 for detecting the stroke of the moving parts inside the valve body assembly 4. The piston 412 of the valve body 41 in the automotive suspension air supply module (ASU) is the core actuator controlling airflow. When the vehicle body needs to be raised, the piston 412 moves to open the inflation port, allowing high-pressure gas to enter the air spring from the air tank, causing the spring to expand. When the vehicle body needs to be lowered, the piston 412 moves to close the inflation port and open the exhaust port, allowing gas in the air spring to be discharged to the atmosphere or return to the air tank. The position of the piston 412 directly determines whether the air spring pressure is stable. When the vehicle body reaches the preset height, piston 412 blocks the air inlet, stopping the flow of gas and thus maintaining the vehicle height and spring stiffness. This mechanism achieves dynamic adjustment through sensor feedback signals and electronic controller unit control. This device is used to test the stroke and torque of piston 412 in the ASU valve body assembly. The conveyor rail 11 can transport valve body assemblies 4 in batches. The drive assembly 2 is used to drive the valve body assemblies 4 to the detection area of ​​the detection assembly 3 for testing. The detection assembly 3 is used to detect the stroke and torque of the piston inside the valve body assembly 4. Through the modular design of the conveyor assembly 1, drive assembly 2, and detection assembly 3 working together, the fully automated detection of the stroke and torque of the air suspension valve body piston 412 is achieved, solving the problems of low efficiency and susceptibility to environmental interference in traditional manual testing. A standardized testing process is constructed to address the core requirements of the dynamic performance of piston 412 in the ASU valve body 41 (such as the opening and closing accuracy of the inflation / exhaust port and sealing performance), ensuring the real-time performance and stability of air spring pressure adjustment and meeting the reliability requirements of the vehicle height control system.

[0028] See attached document Figure 2 As shown, a suspension air supply module valve body piston characteristic testing mechanism has a positioning groove 121 on the surface of the tray 12, with at least two positioning pins 122 in the positioning groove 121, and a first notch 123 in the center of the positioning groove 121. The design of the positioning groove 121 and the double positioning pins 122 allows the positioning pins 122 to engage with the positioning pin holes 422 at the bottom of the valve body base 42, achieving multi-degree-of-freedom limitation of the valve body assembly 4 through geometric constraints, and avoiding test reference offset caused by vibration or mechanical impact.

[0029] See attached document Figure 1 Appendix Figure 2As shown, a suspension air supply module valve body piston characteristic detection mechanism includes a conveying assembly 1 with a stopper 13 fixed to the side of the conveying track 11. The stopper 13 is used to block the tray 12, ensuring that the tray 12 stops above the drive assembly 2, facilitating the drive assembly 2 to move the tray 12 and valve body assembly 4 to the sensing area in subsequent steps, preventing the tray 12 from sliding or shifting during the detection process, and ensuring the continuity of the process.

[0030] See attached document Figure 2 Appendix Figure 3 As shown, a suspension air supply module valve body piston characteristic detection mechanism includes a drive assembly 2 comprising at least two lifting cylinders 21. A lifting base plate 22 is fixedly connected above the lifting cylinders 21, and a lifting support plate 23 is connected above the lifting base plate 22. The lifting support plate 23 is provided with at least two guide pins 231, and the edge of the tray 12 is provided with guide holes 124, the same number as the guide pins 231, into which the guide pins 231 can extend. When the conveying assembly 1 moves the valve body assembly 4 directly above the drive assembly 2, the lifting cylinders 21 drive the lifting base plate 22 to rise vertically. The lifting base plate 22 then moves the lifting support plate 23 upward, and the guide pins 231 on the lifting support plate 23 insert into the guide holes 124 of the tray 12. The drive assembly 2 then lifts the tray 12 and the valve body assembly 4 vertically upward. The cooperation between the guide pin 231 and the guide hole 124 ensures that the position of the tray 12 is stable during the lifting process and will not shake violently, ensuring that the tray 12 can finally enter the detection area of ​​the detection component 3 for alignment.

[0031] See attached document Figure 4 Appendix Figure 5 As shown, a suspension air supply module valve body piston characteristic detection mechanism includes an RFID reader 233 mounted on a lifting plate 23 and a chip mounting base 125 on the base of a tray 12. The RFID reader 233 reads chip data from the chip mounting base 125. When the guide pin 231 of the lifting plate 23 is inserted into the guide hole 124 of the tray 12, the RFID reader 233 simultaneously interacts with the chip in the chip mounting base 125 of the tray 12 base. The detection data and RFID information are synchronously stored in the database, realizing the identification of the tray 12 and the valve body assembly 4 and automatic data entry, reducing manual operation, improving the intelligence level of the entire device's detection process, supporting the traceability and management of valve body assemblies 4 on each tray 12, and reading batch data of parts while the drive assembly 2 drives the tray 12, optimizing the steps of manually inspecting batches of valve body assemblies 4 and improving the efficiency of multi-batch parts inspection.

[0032] See attached document Figure 4As shown, a suspension air supply module valve body piston characteristic detection mechanism is provided. A lifting cylinder 25 is fixedly connected to the bottom of the lifting support plate 23. A moving rod 251 is provided inside the lifting cylinder 25. The moving rod 251 is fixedly connected to the motor 24. A second notch 221 is provided in the center of the lifting base plate 22 to accommodate the motor 24. The motor 24 is provided with a motor shaft 242. A circular notch 232 is provided on the long edge of the lifting support plate 23 to accommodate the motor shaft 242. A torque sensor 241 is provided on the side of the motor shaft 24.

[0033] See attached document Figure 4 Appendix Figure 6 As shown, a suspension air supply module valve body piston characteristic detection mechanism includes a valve body assembly 4 comprising a valve body base 42, with an insertion port 421 at the bottom of the valve body base 42 for inserting the shaft of a motor 24. The valve body base 42 is provided with at least two positioning pin holes 422, which cooperate with positioning pins 122. After the lifting plate 23 moves the tray 12 to the detection area of ​​the detection assembly 3, the lifting cylinder 25 is activated, and the moving rod 251 drives the motor 24 to move upward as a whole. The motor shaft 242 passes through the second notch 221 and the circular notch 232, and finally inserts into the insertion port 421 of the valve body base 42. When motor 24 starts, motor shaft 242 drives the internal cam mechanism of valve body 41 to rotate. The internal cam mechanism drives the internal piston 412 of valve body 41 to move. Torque sensor 241 records the torque data of motor shaft 242. Detection component 3 detects the displacement stroke of piston 412. By using torque data and displacement data, the characteristics of valve body component 4 are detected, its dynamic response characteristics are verified, and the resistance characteristics of piston 412 during air spring inflation and deflation are evaluated to ensure the sealing and operational reliability of valve body 41. The insertion port 421 of valve body base 42 matches motor shaft 242 to ensure the stability and alignment of power transmission, preventing measurement errors or equipment damage caused by power transmission deviation during testing.

[0034] See attached document Figure 7 As shown, a suspension air supply module valve body piston characteristic detection mechanism includes a detection component 3 comprising a support frame 31, a slide rail 32 mounted on the support frame 31, and two displacement sensors 33 symmetrically mounted on the slide rail 32, the displacement sensors 33 being slidably connected to the slide rail 32. The displacement sensors 33 adjust their positions via the slide rail 32 to directly measure the stroke data of the piston 412, reflecting its range of motion and accuracy. The displacement sensors 33 verify whether the piston 412 can complete the inflation / deflation action within a preset stroke, ensuring the stability of the air spring pressure regulation.

[0035] See attached document Figure 7As shown, a suspension air supply module valve body piston characteristic detection mechanism includes a displacement sensor 33 with a sensing head 331. The valve body assembly 4 includes a valve body 41 with two symmetrically arranged valve ports 411. A piston 412, which moves along its central axis, is located within each valve port 411. The sensing head 331 can extend into the valve port 411, directly detecting the movement trajectory of the piston 412 and avoiding errors caused by indirect measurement. Detecting the piston 412's stroke ensures precise matching between the piston 412's position and the opening / closing state of the air inlet / outlet, maintaining the reliability of vehicle height control.

[0036] A method for detecting the piston characteristics of a suspension air supply module valve body involves the following steps: First, a conveying assembly is activated to transport a tray and valve body assembly directly above a drive assembly. Second, the lifting plate 23 of the drive assembly 2 is inserted into the tray 12, raising the valve body 41 on the tray 12 to the detection area of ​​the sensing head 331, ensuring that the valve port 411 is aligned with the central axis of the sensing head 331. Third, the position of the displacement sensor 33 is adjusted via a slide rail 32, allowing the sensing head 331 to extend into the valve port 411. Fourth, the drive assembly is activated to move the piston inside the valve body, and the displacement sensor reads the piston displacement data. Finally, the displacement sensor is activated to retract from the sensing head, and the drive assembly moves the valve body assembly back onto the conveying track. This detection method achieves efficient batch detection of the piston 412 characteristics of the valve body 41 through fully automated operation (conveyance, positioning, detection, and return). It solves the problems of long processing time and high labor costs associated with traditional detection methods, improving the efficiency and standardization of the production line. This device, through modular design (transportation, drive, and detection) and automated processes, solves the problems of accuracy, efficiency, and reliability in the detection of piston 412 in the air suspension valve body 41. The technical solution closely focuses on core performance parameters such as piston 412's stroke, torque, and sealing performance, and combined with intelligent data management, can significantly improve the quality control level of the air suspension system.

[0037] It should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art may make some modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but these should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0039] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A suspension air supply module valve body piston characteristic detection mechanism, characterized in that: The system includes a conveying assembly (1), a driving assembly (2), and a detection assembly (3). The conveying assembly (1) includes a conveying track (11) on which a tray (12) is placed. A valve body assembly (4) is fixed on the tray (12). The driving assembly (2) is connected below the conveying assembly (1). The conveying track (11) is used to drive the tray (12) to move horizontally. The driving assembly (2) includes a lifting plate (23) for inserting the tray (12) and driving the tray (12) to move vertically. The detection assembly (3) includes... The displacement sensor (33) and the support frame (31) are provided with a slide rail (32). The displacement sensor (33) is slidably connected to the slide rail (32) and is used to detect the stroke of the moving parts inside the valve body assembly (4). The displacement sensor (33) is provided with a sensing head (331). The valve body assembly (4) includes a valve body (41). The valve body (41) is symmetrically provided with two valve ports (411). A piston (412) that moves along its central axis is provided in the valve port (411). The sensing head (331) is used to extend into the valve port (411) to detect the movement trajectory of the piston (412).

2. The suspension air supply module valve body piston characteristic detection mechanism according to claim 1, characterized in that: The tray (12) has a positioning groove (121) on its surface, the positioning groove (121) has at least two positioning pins (122), and the center of the positioning groove (121) has a first notch (123).

3. The suspension air supply module valve body piston characteristic detection mechanism according to claim 1, characterized in that: The conveying assembly (1) includes a stopper (13), and the stopper (13) is fixed on the side of the conveying track (11).

4. The suspension air supply module valve body piston characteristic detection mechanism according to claim 1, characterized in that: The drive assembly (2) includes at least two lifting cylinders (21), the piston rod end of the lifting cylinder (21) is fixedly connected to the lifting base plate (22), the lifting base plate (22) is connected above the lifting support plate (23), the lifting support plate (23) is provided with at least two guide pins (231), the edge of the tray (12) is provided with guide holes (124) in the same number as the guide pins (231), and the guide pins (231) are used to extend into the guide holes (124).

5. The suspension air supply module valve body piston characteristic detection mechanism according to claim 4, characterized in that: The bottom of the lifting support plate (23) is fixedly connected to a lifting cylinder (25). The lifting cylinder (25) is provided with a moving rod (251). The moving rod (251) is fixedly connected to the motor (24). The center of the lifting base plate (22) is provided with a second notch (221) that can accommodate the motor (24) to pass through. The motor (24) is provided with a motor shaft (242). The long edge of the lifting support plate (23) is provided with a circular notch (232) that can accommodate the motor shaft (242) to pass through. The side of the motor shaft (242) is provided with a torque sensor (241).

6. The suspension air supply module valve body piston characteristic detection mechanism according to claim 5, characterized in that: The valve body assembly (4) includes a valve body base (42), and the bottom of the valve body base (42) has an insertion port (421) for inserting a motor shaft (242).

7. The suspension air supply module valve body piston characteristic detection mechanism according to claim 1, characterized in that: The lifting plate (23) is equipped with an RFID reader (233), and the base of the tray (12) is equipped with a chip mounting base (125). The RFID reader (233) is used to read chip data in the chip mounting base (125).

8. The suspension air supply module valve body piston characteristic detection mechanism according to claim 1, characterized in that: Two displacement sensors (33) are symmetrically arranged on the slide rail (32).

9. A method for detecting the characteristics of a suspension air supply module valve body piston based on the mechanism described in claim 1, characterized in that: S1: Start the conveyor assembly (1) to convey the tray (12) and valve body assembly (4) directly above the drive assembly (2); S2: The lifting plate (23) of the start drive assembly (2) is inserted into the tray (12). The lifting plate (23) lifts the valve body (41) on the tray (12) to the detection area of ​​the sensor head (331), so that the valve port (411) and the central axis of the sensor head (331) are on the same straight line. S3: Adjust the position of the displacement sensor (33) by driving the slide rail (32) with the servo motor so that the sensing head (331) extends into the valve port (411); S4: Start the drive assembly (2) to drive the piston (412) inside the valve body (41) to move, and the displacement sensor (33) reads the displacement data of the piston (412); S5: Start the displacement sensor (33) and exit the sensing head (331). Drive the valve body assembly (4) to move back onto the conveying track (11).

Images