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

Abstract

The invention discloses a suspension air supply module valve body piston characteristic detection mechanism and method, and belongs to the technical field of automobile suspension system detection. According to the mechanism, the conveying assembly, the driving assembly and the detection assembly which are modularly designed cooperatively work, and full-automatic detection of the stroke and torque of the valve body piston is achieved. The conveying track horizontally conveys a tray to a detection station, the driving assembly accurately lifts a valve body through a jacking air cylinder and a guide pin, and the detection assembly synchronously collects dynamic data of a piston through a displacement sensor and a torque sensor. The problems that manual detection is low in efficiency and poor in precision are solved, through automatic positioning, data collection and RFID information tracing, the stroke precision, sealing performance and dynamic response characteristics of piston inflation and exhaust actions are ensured, the quality control efficiency and reliability of an air suspension valve body are effectively improved, and the stability requirement of a vehicle body height adjusting system is met.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile suspension system detection, and in particular relates to a mechanism and method for detecting characteristics of a valve body piston of a suspension air supply module. Background Art

[0002] In automotive air suspension systems, the dynamic performance of the piston in the air supply module (ASU) valve body (such as stroke accuracy, torque, and sealing) directly impacts the stability of vehicle height adjustment. Traditional testing relies on manual piston movement and displacement measurement, which is inefficient, susceptible to environmental interference, and has poor repeatability. Furthermore, it is difficult to simultaneously obtain torque data, resulting in inconsistent quality control of the valve body assembly. Existing technology, CN118999438A, discloses an ASU valve core inspection device that can detect valve core tilt, but there is room for improvement in the dynamic performance of the valve body piston. Furthermore, some other equipment lacks automated positioning and batch testing capabilities, making it unable to meet the requirements of high-precision, high-speed production lines. Inadequate methods for detecting the matching of piston stroke and the opening and closing states of the charging and exhaust ports can easily lead to the risk of air spring pressure loss. Therefore, there is an urgent need to develop a solution that integrates automated conveying, precise positioning, and simultaneous multi-parameter testing to improve the efficiency and reliability of valve body assembly inspection. Summary of the Invention

[0003] The present invention aims to realize automatic detection of piston stroke and torque of a valve body of an automobile suspension air supply module, improve efficiency and reliability, and ensure stability of air spring pressure regulation.

[0004] A mechanism for detecting the piston characteristics of a suspension air supply module valve body comprises a conveyor assembly, a drive assembly, and a detection assembly. The conveyor assembly includes a conveyor track on which a pallet is placed, onto which a valve body assembly is fixed. The drive assembly is connected below the conveyor assembly. The conveyor track drives the pallet horizontally. The drive assembly includes a lift plate that can be inserted into the pallet to drive its vertical movement. The detection assembly includes a displacement sensor for detecting the travel of the moving parts within the valve body assembly. The piston of the valve body in a vehicle suspension air supply module (ASU) is the core actuator for controlling air flow. When the vehicle body needs to be raised, the piston moves to open the charging port, allowing high-pressure gas from the air tank to enter the air spring, causing it to expand. When the vehicle body needs to be lowered, the piston moves to close the charging port and open the exhaust port, allowing the gas in the air spring to be discharged to the atmosphere or back 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 charging port, stopping the flow of gas, thereby maintaining the vehicle body height and spring stiffness. This mechanism achieves dynamic adjustment through sensor feedback and control by an electronic controller unit. This device is used to test the stroke and torque of the piston in the ASU valve body assembly. The conveying track can transport the valve body assemblies in batches. The drive assembly is used to drive the valve body assembly to the detection area of ​​the detection assembly for detection. The detection assembly is used to detect the stroke and torque of the piston inside the valve body assembly. Through the coordinated operation of the modularly designed conveying assembly, drive assembly and detection assembly, the fully automated detection of the air suspension valve body piston stroke and torque is achieved, solving the problems of low efficiency and susceptibility to environmental interference in traditional manual detection. In response to the core requirements of the piston dynamic performance of the ASU valve body (such as the opening and closing accuracy of the inflation / exhaust port, and the sealing), a standardized testing process is established to ensure the real-time and stability of the air spring pressure adjustment and meet the reliability requirements of the vehicle height control system.

[0005] A mechanism for testing the piston characteristics of a suspension air supply module valve body features a positioning groove on the surface of a tray, equipped with at least two positioning pins. A first notch is defined in the center of the groove. The positioning groove and the dual positioning pins are designed to mate with positioning pin holes in the bottom of the valve body base. This geometric constraint allows for multi-degree-of-freedom positioning of the valve body assembly, preventing test benchmark deviation caused by vibration or mechanical impact.

[0006] A mechanism for testing the valve body piston characteristics of a suspension air supply module. The conveyor assembly includes a stopper fixed to the side of the conveyor track. The stopper is used to stop the pallet, ensuring that the pallet stops above the drive assembly. This facilitates the drive assembly's subsequent movement of the pallet and valve body assembly to the sensing area, preventing the pallet from sliding or shifting during testing and ensuring process continuity.

[0007] A mechanism for detecting the piston characteristics of a valve body of a suspension air supply module, wherein a drive assembly includes at least two lifting cylinders, a lifting base plate fixedly connected above the lifting cylinders, a lifting support plate connected above the lifting base plate, at least two guide pins provided on the lifting support plate, and guide holes equal in number to the number of guide pins provided on the edge of the tray, into which the guide pins can extend. When the conveying assembly moves the valve body assembly to directly above the driving assembly, the lifting cylinder drives the lifting base plate to rise vertically, the lifting base plate drives the lifting support plate to move upward, the guide pins on the lifting support plate are inserted into the guide holes of the tray, and the driving assembly lifts the tray and the valve body assembly vertically upward. The coordination of the guide pins and the guide holes ensures that the position of the tray is stable and does not vibrate violently during the lifting process, ensuring that the tray can finally enter the detection area of ​​the detection assembly for alignment.

[0008] A mechanism for testing the valve body and piston characteristics of a suspension air supply module features an RFID (contactless automatic identification technology) reader / writer on the lift plate and a chip mount on the tray base. The RFID reader / writer reads the data of the chip within the mount. When the lift plate's guide pins engage the tray's guide holes, the RFID reader / writer interacts with the chip within the tray base's chip mount, enabling identification of the tray and valve body assembly and automatic data entry. This reduces manual operation and enhances the intelligence of the entire device's testing process. It supports traceability and management of valve body assemblies on each tray. As the drive assembly drives the tray, it simultaneously reads component batch data, streamlining manual inspection of valve body assembly batches and improving the efficiency of multi-batch part inspection.

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

[0010] A mechanism for testing the piston characteristics of a suspension air supply module valve body. The valve body assembly includes a valve base with an insertion opening at the bottom of the valve base for inserting the motor shaft. The valve body base is provided with at least two locating pin holes that cooperate with the locating pins. After the support plate is lifted and moved to the detection assembly's detection area, the lifting cylinder is activated, and the moving rod drives the motor upward as a whole. The motor shaft passes through a second notch and a circular notch, ultimately inserting into the insertion opening of the valve body base. When the motor is activated, 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 detection assembly detects the piston displacement. The torque and displacement data are used to test the characteristics of the valve body assembly, verify its dynamic response characteristics, evaluate the piston's resistance characteristics during air spring inflation and deflation, and ensure the valve body's sealing and operational reliability. The insertion opening of the valve body base aligns with the motor shaft to ensure stable and centered power transmission, preventing measurement errors or equipment damage caused by power transmission deviations during testing.

[0011] A mechanism for detecting piston characteristics in a suspension air supply module valve body. The detection assembly includes a support frame mounted with a slide rail. Two displacement sensors are symmetrically mounted on the slide rail and slidably connected to the slide rail. The displacement sensors adjust their position via the slide rail and directly measure the piston's travel, reflecting its range and accuracy. The displacement sensors verify that the piston can complete inflation / exhaustion within the preset travel range, ensuring the stability of air spring pressure regulation.

[0012] A mechanism for detecting the piston characteristics of a suspension air supply module valve body is designed. The displacement sensor is equipped with a sensing head. The valve assembly includes a valve body with two symmetrical valve ports. Within each valve port lies a piston that moves along its central axis. The sensing head can be inserted into the valve port to directly detect the piston's movement, avoiding errors caused by indirect measurement. Detecting piston travel ensures that piston position accurately matches the opening and closing status of the charging / exhaust ports, maintaining reliable vehicle height control.

[0013] A method for testing the piston characteristics of a suspension air supply module valve body involves first activating the conveyor assembly to transport the pallet and valve body assembly directly above the drive assembly. Second, the drive assembly's lifting plate engages the pallet, lifting the valve body on the pallet into the sensing head's detection area, aligning the valve opening with the sensor head's central axis. Third, the position of the displacement sensor is adjusted using a slide rail to insert the sensor head into the valve opening. 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 is activated to retract the sensor head, and the drive assembly drives the valve body assembly back onto the conveyor rail. This testing method, through fully automated operations (conveying, positioning, testing, and feedback), enables efficient batch testing of valve body piston characteristics. This method overcomes the time-consuming and labor-intensive nature of traditional testing methods, improving production line testing efficiency and standardization. Through its modular design (conveying, driving, testing) and automated processes, this device addresses the challenges of precision, efficiency, and reliability in piston testing of air suspension valve bodies. The technical solution closely focuses on core performance parameters such as piston stroke, torque and sealing, and combines with intelligent data management to significantly improve the quality control level of the air suspension system.

[0014] The advantages of this invention lie in its modular, fully automated testing process, integrated conveying, drive, and testing components, combined with dual locating pins, guide pins, and RFID data traceability technology to achieve efficient and accurate measurement of valve body piston stroke and torque. The simultaneous acquisition of piston dynamic parameters by displacement and torque sensors addresses the issues of low manual testing efficiency, poor accuracy, and environmental interference. Its anti-interference modular structure ensures detection stability, while RFID information binding enables quality traceability. This significantly improves the quality control efficiency and charging and exhaust reliability of air suspension valve body assemblies, meeting the demands of high-speed production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0016] Figure 1 It is a schematic diagram of the general assembly of the present invention.

[0017] Figure 2 Schematic diagram of the track and tray of the present invention.

[0018] Figure 3 This is an exploded view of the drive assembly of the present invention.

[0019] Figure 4This is an exploded view of one side of the lifting cylinder of the drive assembly 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 Schematic diagram of the valve body assembly of the present invention.

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

[0023] Description of the drawings: 1-conveying assembly, 2-driving 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, 125-chip mounting seat, 25-lifting cylinder, 251-moving rod, 24-motor, 221-second notch, 232-circular notch, 241-torque sensor, 42-valve body base, 421-insertion port, 422-positioning pin hole, 31-support frame, 32-slide rail, 33-displacement sensor, 331-sensing head, 411-valve port. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] Example 1: Refer to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 6The figure shows a mechanism for detecting the piston characteristics of a suspension air supply module valve body. The mechanism comprises a conveyor assembly 1, a drive assembly 2, and a detection assembly 3. The conveyor assembly 1 includes a conveyor track 11, on which a pallet 12 is placed. A valve body assembly 4 is fixedly mounted. The drive assembly 2 is connected below the conveyor assembly 1. The conveyor track 11 drives the pallet 12 horizontally. The drive assembly 2 includes a lifting plate 23 that can be inserted into the pallet 12 to drive its vertical movement. The detection assembly 3 includes a displacement sensor 33 for detecting the travel of the moving parts within the valve body assembly 4. The piston 412 of the valve body 41 in the vehicle suspension air supply module (ASU) is the core actuator for controlling air flow. When the vehicle body needs to be raised, the piston 412 moves to open the charging port, allowing high-pressure gas from the air tank to enter the air spring, causing it to expand. When the vehicle body needs to be lowered, the piston 412 moves to close the charging port and open the exhaust port, allowing the gas in the air spring to be discharged to the atmosphere or returned to the air tank. The position of the piston 412 directly determines whether the air spring pressure is stable. When the vehicle body reaches a preset height, piston 412 blocks the inflation port, stopping air flow and maintaining vehicle body height and spring rate. This mechanism achieves dynamic adjustment through sensor feedback and control by the electronic controller unit. This device is used to test the stroke and torque of piston 412 in the ASU valve body assembly. The conveyor track 11 can transport valve body assemblies 4 in batches. The drive assembly 2 drives the valve body assemblies 4 to the inspection area of ​​the detection assembly 3 for testing. The detection assembly 3 detects the stroke and torque of the piston within the valve body assembly 4. The modular design of the conveyor assembly 1, drive assembly 2, and detection assembly 3 collaborate to achieve fully automated testing of the stroke and torque of the air suspension valve body piston 412, addressing the 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 dynamic performance of piston 412 in the ASU valve body 41 (such as the opening and closing accuracy of the inflation / exhaust ports and sealing). This ensures real-time and stable air spring pressure adjustment and meets the reliability requirements of the vehicle height control system.

[0027] Refer to the attached Figure 2 The figure shows a mechanism for testing the piston characteristics of a valve body in a suspension air supply module. A positioning groove 121 is provided on the surface of a tray 12. This groove 121 is equipped with at least two positioning pins 122, and a first notch 123 is defined at the center of the groove 121. The design of the positioning groove 121 and the dual positioning pins 122 allows the positioning pins 122 to mate with positioning pin holes 422 at the bottom of the valve body base 42. This geometric constraint allows for multi-degree-of-freedom positioning of the valve body assembly 4, preventing test reference offset due to vibration or mechanical shock.

[0028] Refer to the attached Figure 1 , Attachment Figure 2As shown, a mechanism for testing the valve body piston characteristics of a suspension air supply module is shown. The conveyor assembly 1 includes a stopper 13, which is fixed to the side of the conveyor track 11. Stopper 13 is used to stop the tray 12, ensuring that the tray 12 stops above the drive assembly 2. This facilitates the drive assembly 2 in subsequent steps to move the tray 12 and valve body assembly 4 to the sensing area, preventing the tray 12 from sliding or shifting during the testing process and ensuring process continuity.

[0029] Refer to the attached Figure 2 , Attachment Figure 3 As shown, a mechanism for detecting the valve body piston characteristics of a suspension air supply module is provided. The drive assembly 2 includes at least two lifting cylinders 21. A lifting base plate 22 is fixedly connected above the lifting cylinders 21. 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. 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 to directly above the drive assembly 2, the lifting cylinders 21 drive the lifting base plate 22 to rise vertically. The lifting base plate 22 drives the lifting support plate 23 to move upward. The guide pins 231 on the lifting support plate 23 are inserted into the guide holes 124 of the tray 12, and the drive assembly 2 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 and does not shake violently during the lifting process, ensuring that the tray 12 can finally enter the detection area of ​​the detection component 3 for alignment.

[0030] Refer to the attached Figure 4 , Attachment Figure 5 The figure shows a mechanism for testing the valve body and piston characteristics of a suspension air supply module. An RFID reader / writer 233 is provided on a lifting plate 23, and a chip mounting seat 125 is provided at the base of the tray 12. The RFID reader / writer 233 is used to read the data of a chip in the chip mounting seat 125. When the guide pins 231 of the lifting plate 23 are engaged with the guide holes 124 of the tray 12, the RFID reader / writer 233 simultaneously interacts with the chip in the chip mounting seat 125 at the base of the tray 12. The test data and RFID information are synchronously stored in a database, enabling identification and automatic data entry of the tray 12 and valve body assembly 4. This reduces manual operation, improves the intelligence level of the entire device testing process, supports traceability and management of the valve body assembly 4 on each tray 12, and reads the batch data of the components simultaneously with the driving assembly 2 driving the tray 12. This simplifies the manual inspection process for valve body assembly 4 batches and improves the efficiency of multi-batch part inspection.

[0031] Refer to the attached Figure 4As shown, a suspension air supply module valve body piston characteristic detection mechanism, the bottom of the lifting support plate 23 is fixedly connected to the 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 for accommodating the passage of the motor 24, the motor 24 is provided with a motor shaft 242, the long side edge of the lifting support plate 23 is provided with a circular notch 232 for accommodating the passage of the motor shaft 242, and the side of the motor 24 shaft is provided with a torque sensor 241.

[0032] Refer to the attached Figure 4 , Attachment Figure 6 As shown, a mechanism for testing the valve body piston characteristics of a suspension air supply module is illustrated. The valve body assembly 4 includes a valve body base 42, with an insertion opening 421 at the bottom thereof for inserting the shaft of the power supply motor 24. The valve body base 42 is provided with at least two locating pin holes 422, which engage with the locating pins 122. After the support plate 23 is lifted and the tray 12 is moved to the detection area of ​​the detection assembly 3, the lifting cylinder 25 is activated, and the moving rod 251 drives the motor 24 upward as a whole. The motor shaft 242 passes through the second notch 221 and the circular notch 232, and is ultimately inserted into the insertion opening 421 of the valve body base 42. When motor 24 is started, motor shaft 242 rotates the cam mechanism inside valve body 41, which in turn moves piston 412 inside valve body 41. Torque sensor 241 records the torque data of motor shaft 242, and detection assembly 3 detects the displacement of piston 412. The torque and displacement data are used to detect the characteristics of valve body assembly 4, verify its dynamic response, and evaluate the resistance characteristics of piston 412 during air spring inflation and deflation, thereby ensuring the sealing and operational reliability of valve body 41. The insertion port 421 of valve body base 42 aligns with motor shaft 242 to ensure stable and centered power transmission, preventing measurement errors or equipment damage caused by power transmission deviations during testing.

[0033] Refer to the attached Figure 7 The figure shows a mechanism for detecting the piston characteristics of a suspension air supply module valve body. The detection assembly 3 includes a support frame 31, mounted on a slide rail 32. Two displacement sensors 33 are symmetrically mounted on the slide rail 32 and slidably connected to the slide rail 32. The displacement sensors 33 are adjusted in position by the slide rail 32 and directly measure the travel of the piston 412, reflecting its range and accuracy. The displacement sensors 33 verify that the piston 412 can complete the inflation / exhaustion action within the preset travel range, ensuring the stability of air spring pressure regulation.

[0034] Refer to the attached Figure 7The figure shows a mechanism for detecting the valve body and piston characteristics of a suspension air supply module. The displacement sensor 33 is equipped with a sensing head 331. The valve body assembly 4 includes a valve body 41 symmetrically defined by two valve ports 411. Within each valve port 411 lies a piston 412 that moves along its central axis. The sensing head 331 can extend into the valve port 411, directly detecting the movement of the piston 412 and avoiding errors caused by indirect measurement. Detecting the travel of the piston 412 ensures that its position accurately matches the opening and closing states of the inflation / exhaust ports, maintaining reliable vehicle height control.

[0035] A method for testing the piston characteristics of a suspension air supply module valve body. First, the conveyor assembly is activated to transport the pallet and valve body assembly directly above the drive assembly. Second, the lift plate 23 of the drive assembly 2 is activated to engage the pallet 12. This lifts the valve body 41 on the pallet 12 into the detection area of ​​the sensor head 331, aligning the valve port 411 with the center axis of the sensor head 331. Third, the position of the displacement sensor 33 is adjusted using the slide rail 32 so that the sensor head 331 extends 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 the sensor head, and the drive assembly drives the valve body assembly back to the conveyor rail. This testing method, through fully automated operations (conveying, positioning, testing, and feedback), enables efficient batch testing of the characteristics of the piston 412 of the valve body 41. This method addresses the time-consuming and labor-intensive nature of traditional testing methods, improving production line testing efficiency and standardization. Through a modular design (transmission, drive, and testing) and automated processes, this device addresses the challenges of accuracy, efficiency, and reliability in testing the piston 412 of the air suspension valve body 41. The technical solution closely focuses on core performance parameters such as piston 412's stroke, torque, and sealing. Combined with intelligent data management, it significantly improves the quality control of air suspension systems.

[0036] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and do not impose any form of limitation on the implementation methods of the technology of the present invention. Any person skilled in the art may make slight changes to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can also make several improvements, modifications or changes, 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 occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A suspension air supply module valve body piston characteristic detection mechanism, characterized by: The invention comprises a conveying assembly (1), a driving assembly (2), and a detecting assembly (3), wherein the conveying assembly (1) comprises a conveying track (11), a pallet (12) is placed on the conveying track (11), a valve body assembly (4) is fixed on the pallet (12), a driving assembly (2) is connected below the conveying assembly (1), the conveying track (11) is used to drive the pallet (12) to move in the horizontal direction, the driving assembly (2) comprises a lifting plate (23), the lifting plate (23) is used to plug the pallet (12), and drive the pallet (12) to move in the vertical direction, and the detecting assembly (3) comprises a displacement sensor (33) for detecting the stroke of the movable parts inside the valve body assembly (4).

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

3. The suspension air supply module valve body piston characteristic detection mechanism according to claim 1, characterized in that: The conveying assembly (1) comprises a stopper (13), and the stopper (13) is fixedly provided 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 driving assembly (2) includes at least two lifting cylinders (21), the piston rod ends of the lifting cylinders (21) are fixedly connected to the lifting base plate (22), the lifting base plate (22) is connected to the lifting support plate (23) above, and 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) with 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), a moving rod (251) is provided in the lifting cylinder (25), and the moving rod (251) is fixedly connected to the motor (24). A second notch (221) capable of accommodating the motor (24) is provided at the center of the lifting base plate (22), and the motor (24) is provided with a motor shaft (242). A circular notch (232) capable of accommodating the motor shaft (242) is provided at the long edge of the lifting support plate (23), and a torque sensor (241) is provided on the side of the motor shaft (242).

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

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

8. The suspension air supply module valve body piston characteristic detection mechanism according to claim 1, characterized in that: The detection assembly (3) comprises a support frame (31), a slide rail (32) is provided on the support frame (31), two displacement sensors (33) are symmetrically provided on the slide rail (32), and the displacement sensors (33) are slidably connected to the slide rail (32).

9. The suspension air supply module valve body piston characteristic detection mechanism according to claim 8, characterized in that: The displacement sensor (33) is provided with a sensing head (331), and the valve body assembly (4) includes a valve body (41), the valve body (41) being symmetrically provided with two valve ports (411), and a piston (412) movable along the central axis thereof is provided in the valve port (411).

10. A method for detecting the characteristics of a valve body piston of a suspension air supply module based on the mechanism of claim 9, characterized in that: S1: Start the conveying assembly (1) to transfer the tray (12) and the valve body assembly (4) to the top of the driving assembly (2); S2: Start the lifting support plate (23) of the driving assembly (2) and insert it into the tray (12), lift the lifting support plate (23) to lift the valve body (41) on the tray (12) to the detection area of ​​the sensing head (331), so that the valve port (411) and the central axis of the sensing head (331) are in the same straight line; S3: The servo motor drives the slide rail (32) to adjust the position of the displacement sensor (33) so that the sensor head (331) extends into the valve port (411); S4: starting the driving 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: The displacement sensor (33) is started to exit the sensing head (331), and the driving assembly (2) drives the valve body assembly (4) to move back to the conveying track (11).

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