On-line detection system for coil and belt pulley clamping ring of automobile air conditioner compressor

Abstract

An on-line detection system for a coil and a belt pulley collar of an automobile air conditioner compressor belongs to the field of automobile air conditioner compressors and comprises a structural frame, a lifting mechanism and a detection mechanism, the structural frame specifically comprises a main frame body, a guide rod is mounted at the upper end of the main frame body, and a fixed disc is arranged at the upper end of the guide rod; the bottom plate is fixed on the main frame body, the lifting air cylinder is installed on the bottom plate, the lifting plate is connected to a piston rod of the lifting air cylinder, the detection mechanism specifically comprises a detection air cylinder, a connecting disc, a displacement sensor and a measuring head assembly, the detection air cylinder is installed on the fixing disc, the connecting disc is connected with the piston rod of the detection air cylinder, and the displacement sensor is fixed on the connecting disc. The measuring head assembly is a coil clamping ring detection assembly or a belt pulley clamping ring detection assembly, is connected to the lower end of the connecting disc, is matched with a continuous assembly production line of the automobile air conditioner compressor to realize on-line full-amount monitoring on the clamping state of the clamping ring, is reliable in function and low in cost, meets the production requirements, and ensures the product quality.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning compressors, specifically to an online detection system for automotive air conditioning compressor coils and pulley retaining rings. Background Technology

[0002] The variable displacement automotive air conditioning compressor structure includes a pressure plate, pulleys, and an electromagnetic clutch. When the coil in the electromagnetic clutch is energized, the pressure plate and pulley engage, and the pulley drives the main shaft to rotate, causing the automotive air conditioning compressor to work. When the coil is de-energized, the pressure plate and pulley disengage, the car engine drives the pulley to idle, and the compressor stops working. The pulley and coil are connected to the cylinder block of the automotive air conditioning compressor in an assembly structure using elastic retaining rings. The assembly process typically uses retaining ring press-fitting equipment on a continuous assembly line. While existing CCD vision inspection technology can monitor whether the coil and pulley retaining rings are properly installed in the continuous assembly production of automotive air conditioning compressors, the high technical requirements and cost of CCD vision inspection technology make it difficult for most domestic assembly lines to meet the technical and economic conditions required for its widespread application. Therefore, in domestic manufacturers, the online inspection of the coil and pulley clamping status of automotive air conditioning compressors mainly relies on manual visual inspection or manual measurement with measuring tools, sometimes supplemented by offline sampling inspection to ensure the assembly quality of automotive air conditioning compressors. However, it is obvious that these traditional inspection and measurement methods are not only crude in implementation and inaccurate, but also have significant human error and insufficient reliability, failing to achieve precise and efficient inspection of the coil and pulley clamping status of automotive air conditioning compressors and guarantee product quality. Therefore, it is necessary to research and develop a dedicated online inspection system for coils and pulley clamping rings that is compatible with continuous assembly lines for automotive air conditioning compressors, meeting the technical and economic adaptability of production equipment, achieving full online inspection of clamping rings, and improving the stability and reliability of the assembly connection of pulley assemblies and coil assemblies. Utility Model Content

[0003] The purpose of this invention is to provide an online testing system for automotive air conditioning compressor coils and pulley retaining rings, which is used in conjunction with a continuous assembly line for automotive air conditioning compressors to perform online full-scale testing and monitoring of the retaining ring's mounting status, thereby ensuring the product quality of automotive air conditioning compressors.

[0004] An online testing system for automotive air conditioning compressor coils and pulley retaining rings includes: a structural frame, a lifting mechanism, and a testing mechanism; the structural frame specifically includes: a main frame body, which is fixedly installed at the lower part of a chain conveyor mechanism on the production line, and a vertically arranged guide rod is connected and installed at its upper end. The guide rod extends upward to the upper part of the chain conveyor mechanism, and a fixing plate is installed at its upper end; the lifting mechanism is correspondingly installed at the lower part of the chain conveyor mechanism, and specifically includes: a base plate, a lifting cylinder, and a lifting plate, the base plate being fixedly connected to the... On the main frame, the lifting cylinder is vertically fixedly mounted on the base plate, and the lifting plate is horizontally fixedly connected to the piston rod of the lifting cylinder. It can be pushed up to the upper part of the chain conveyor mechanism by the lifting cylinder. A positioning pin is installed on the upper end face of the lifting plate, corresponding to a positioning groove on the lower end face of the conveyor compressor assembly's tray. During the lifting process, the positioning pin can be inserted into the positioning groove to fix the tray on the lifting plate and move with it. The lifting plates are raised together, allowing the accompanying tray to disengage from the chain conveyor mechanism, pushing the compressor assembly carried on the accompanying tray to the corresponding inspection station. The inspection mechanism specifically includes: a detection cylinder, a connecting plate, a displacement sensor, and a probe assembly. The detection cylinder is vertically fixed on the fixed plate. The connecting plate is horizontally positioned below the fixed plate and connected to the piston rod of the detection cylinder, allowing it to move vertically driven by the detection cylinder. The displacement sensor is fixedly mounted on the connecting plate, with the lower end of the measuring rod extending vertically to the lower part of the connecting plate. The probe assembly is either a coil retaining ring detection assembly or a pulley retaining ring detection assembly, correspondingly connected and mounted on the lower end of the connecting plate with the measuring rod. It cooperates with the displacement sensor to detect the spatial position of the coil retaining ring and the pulley retaining ring relative to the compressor assembly. By comparing the detected state with the reference calibration state, it can be determined whether the coil retaining ring or the pulley retaining ring is installed in place.

[0005] Preferably, the coil retaining ring detection assembly includes: a coil centering shaft, a coil detection sleeve, and a coil positioning sleeve. The coil centering shaft is fixedly connected to the lower end face of the connecting plate, and a limiting pin is fixedly installed on its outer circumference. The coil detection sleeve is fitted around the outside of the coil centering shaft. A strip-shaped slot is formed on the side wall of the coil detection sleeve, corresponding to the limiting pin structure and arranged axially. The limiting pin is fitted into the strip-shaped slot, and the pin groove limiting fit can guide the coil detection sleeve to move axially relative to the coil centering shaft. The coil positioning sleeve is fitted around the outside of the coil detection sleeve. It is fixedly connected to the coil centering shaft by the limiting pin and combined with the connecting plate by the coil centering shaft. A support spring is provided between the coil detection sleeve and the combination of the connecting plate and the coil positioning sleeve to maintain an axial elastic fit between the coil detection sleeve and the combination of the connecting plate and the coil positioning sleeve. At the same time, the upper end face of the coil detection sleeve is in contact with the lower end of the measuring rod on the displacement sensor.

[0006] Preferably, the pulley retaining ring detection assembly includes: a pulley centering shaft and a pulley detection sleeve. The pulley centering shaft is fixedly connected to the lower end face of the connecting disc, and a limiting pin is fixedly installed on its outer circumference. The pulley detection sleeve is fitted around the outside of the pulley centering shaft. A strip-shaped slot is formed on the side wall of the pulley detection sleeve, corresponding to the limiting pin structure and arranged axially. The limiting pin is fitted into the strip-shaped slot. The pin groove limiting fit can guide the pulley detection sleeve to move axially relative to the pulley centering shaft. A support spring is provided between the pulley detection sleeve and the connecting disc to maintain an axial elastic fit between the pulley detection sleeve and the connecting disc. At the same time, the upper end face of the pulley detection sleeve is in contact with the lower end of the measuring rod on the displacement sensor.

[0007] The online detection system for automotive air conditioning compressor coils and pulley retaining rings includes, in the lifting mechanism, a translation cylinder, a translation fork, and a support base. The translation cylinder and the support base are correspondingly and fixedly mounted on the base plate. The translation cylinder is horizontally positioned, and the translation fork is fixedly connected to the piston rod of the translation cylinder. The translation fork is a fork-shaped structure with two forks, which can be pushed and pulled horizontally by the translation cylinder. The two forks are respectively positioned on both sides of the lifting cylinder. The lower part of each fork is supported by the horizontally positioned support base. A lower support column is fixedly mounted on the upper end face of the fork. An upper support column corresponding to the lower support column is fixedly installed on the lower end surface of the lifting plate. When the piston rod of the translation cylinder fully retracts, the upper support column and the lower support column are staggered, so that when the piston rod of the lifting cylinder retracts, the lifting plate can fall fully to the lower part of the chain conveyor mechanism, and the line tray is placed back on the chain conveyor mechanism. When the piston rod of the translation cylinder fully extends forward, the lower support column and the upper support column are aligned and can form a vertical support cooperation, fixing the line tray above the chain conveyor mechanism and positioning the conveyor compressor assembly at the inspection station.

[0008] Preferably, the lifting mechanism is provided with side guide plates. Two side guide plates are respectively disposed on both sides of the translation fork and fixedly connected to the support base. They are respectively matched with the fork rod on both sides to provide lateral limiting, constrain and guide the translation fork to maintain horizontal linear movement, and improve the stability and reliability of the translation fork's position movement and transformation.

[0009] Preferably, in the structural frame, an adjusting foot cup is installed on the lower end of the main frame support column. The adjusting foot cup can be used to adjust the setting height and horizontal balance of the main frame to ensure detection accuracy.

[0010] The beneficial effects of this utility model are that it provides an online detection system for the coil and pulley retaining ring of an automotive air conditioning compressor. This system is designed to be integrated with a continuous assembly line for automotive air conditioning compressors. It is installed at the rear end of the coil retaining ring pressing station and the pulley retaining ring pressing station, respectively. By detecting the pressing position of the coil and pulley retaining rings of each automotive air conditioning compressor, the continuous assembly line achieves online full-scale monitoring and detection of the retaining status of the coil and pulley retaining rings, improving the quality management level of automotive air conditioning compressor assembly production and ensuring product assembly quality. The detection of the pressing position of the coil and pulley retaining rings uses a mechanical measurement method with displacement sensors and their matching probe assemblies. This method is reliable, low-cost, and highly technically and economically compatible with existing continuous assembly lines for automotive air conditioning compressors. It can effectively meet current production needs, improve production efficiency, and ensure product quality. Attached Figure Description

[0011] Figure 1 This is a front view of the structure of an online testing system for automotive air conditioning compressor coils and pulley circlips.

[0012] Figure 2 This is a side view of the structure of an online testing system for automotive air conditioning compressor coils and pulley ferrules.

[0013] Figure 3 This is the main view of the structure in the lifting state of the lifting mechanism.

[0014] Figure 4 This is a side view of the structure in the lifting state of the lifting mechanism.

[0015] Figure 5 This is a top view of the structure in the lifting state of the lifting mechanism.

[0016] Figure 6 This is the main view of the lifting mechanism in its falling state.

[0017] Figure 7 This is a diagram showing the structure and detection principle of the coil retainer detection assembly.

[0018] Figure 8 for Figure 7 Sectional view of section AA.

[0019] Figure 9 This diagram shows the structural composition and testing principle of the pulley retaining ring testing assembly.

[0020] Figure 10 for Figure 9 Sectional view of section BB.

[0021] The components are as follows: 1 is the main frame, 2 is the guide rod, 3 is the fixed plate, 4 is the base plate, 5 is the lifting cylinder, 6 is the lifting plate, 7 is the detection cylinder, 8 is the connecting plate, 9 is the displacement sensor, 10 is the chain conveyor mechanism, 11 is the positioning pin, 12 is the wire tray, 13 is the probe assembly, 14 is the translation cylinder, 15 is the translation fork, 16 is the support base, 17 is the lower support column, 18 is the upper support column, 19 is the side guide plate, 20 is the compressor assembly, 21 is the coil centering shaft, 22 is the coil detection sleeve, 23 is the coil positioning sleeve, 24 is the pulley centering shaft, 25 is the pulley detection sleeve, 26 is the limit pin, 27 is the support spring, 28 is the adjusting foot cup, 29 is the gantry, 30 is the coil retaining ring, 31 is the pulley retaining ring, and 32 is the anti-rotation pin. Detailed Implementation

[0022] Furthermore, in conjunction with specific embodiments and their accompanying drawings... Figures 1 to 10 The present invention provides a detailed description of the technical solution for which protection is sought.

[0023] An online testing system for automotive air conditioning compressor coils and pulley retaining rings, such as... Figure 1 and Figure 2 As shown, it consists of a structural frame, a lifting mechanism, and a detection mechanism. The structural frame is composed of a main frame 1, guide rods 2, and a fixing plate 3. The main frame 1 is fixedly installed on the ground. Adjustable feet 28 are installed on the lower ends of the support columns of the main frame 1. The guide rods 2 are cylindrical rods, and four guide rods 2 are arranged in a rectangular pattern and connected to the upper end of the main frame 1, corresponding to the outer sides of the two chain conveyor mechanisms 10 on the production line. The fixing plate 3 is fixedly installed on the upper end of the guide rods 2. The lifting mechanism, as shown... Figures 3 to 6As shown, the structure comprises a base plate 4, a lifting cylinder 5, a lifting plate 6, a translation cylinder 14, a translation fork 15, a support base 16, and a side guide plate 19. The base plate 4 is fixedly connected to the main frame 1. The lifting cylinder 5 is vertically arranged, and the translation cylinder 14 is horizontally arranged, corresponding to each other and fixedly installed on the base plate 4. The lifting plate 6 is fixedly connected to the piston rod of the lifting cylinder 5, and the translation fork 15 is fixedly connected to the translation cylinder 14. Two corresponding positioning pins 11 are installed on the upper end plate surface of the lifting plate 6. The positioning pins 11 correspond to two positioning grooves opened on the lower end surface of the line tray 12, respectively, and can form pin-groove positioning fits. The two forks of the translation fork 15 are respectively... On both sides of the lifting cylinder 5, two lower support columns 17 are respectively provided on the upper end surface of each fork. Two support seats 16 are respectively provided on the lower part of the two forks and fixedly installed on the base plate 4. Two side guide plates 19 are respectively provided on the outer side surface of the support seats 16. The support seats 16 and the side guide plates 19 combine to form a limiting track, which can constrain and guide the translation fork 15 to maintain horizontal linear movement. At the same time, four upper support columns 18 are also distributed on the lower end surface of the lifting plate 6. The upper support columns 18 correspond to the lower support columns 17 respectively. When they coincide with the lower support columns 17 in the vertical direction, they can be stacked to support the lifting plate 6. The detection mechanism, such as Figure 1 , Figure 2 and Figures 7 to 10 As shown, the device comprises a detection cylinder 7, a connecting plate 8, a displacement sensor 9, and a probe assembly 13. The detection cylinder 7 is vertically fixed on the fixed plate 3. The connecting plate 8 is connected to the piston rod of the detection cylinder 7 via a gantry 29. The displacement sensor 9 is fixedly installed on the upper end of the connecting plate 8, and the measuring rod on the displacement sensor 9 passes through the connecting plate 8 and extends to the lower end of the connecting plate 8. The probe assembly 13 consists of an interchangeable coil retaining ring detection assembly and a pulley retaining ring detection assembly, connected and installed on the lower end of the connecting plate 8. When the coil retaining ring detection assembly is installed and used, a coil retaining ring detection system is formed; when the pulley retaining ring detection assembly is installed and used, a pulley retaining ring detection system is formed. The coil retaining ring detection assembly, as shown... Figure 7 and Figure 8As shown, it specifically consists of a coil centering shaft 21, a coil detection sleeve 22, and a coil positioning sleeve 23. The coil centering shaft 21 is fixedly connected to the lower end of the connecting disc 8 by connecting bolts. Two radially symmetrically arranged limiting pins 26 are installed on the outer circumference. The coil detection sleeve 22 is fitted onto the outside of the coil centering shaft 21, and its side wall has two strip-shaped slots corresponding to the limiting pins 26. The coil positioning sleeve 23 is fitted onto the outside of the coil detection sleeve 22, and its side wall has two circular through holes corresponding to the limiting pins 26. The limiting pins 26 are respectively embedded in the strip-shaped slots and the circular through holes. Positioning pin 26 guides the coil detection sleeve 22 to move axially relative to the coil centering shaft 21, fixing the coil positioning sleeve 23 to the coil centering shaft 21. An anti-rotation pin 32 is installed between the coil positioning sleeve 23 and the connecting disc 8 to further enhance the stability of the integrated structure of the coil positioning sleeve 23, the coil centering shaft 21, and the connecting disc 8. Simultaneously, four support springs 27 evenly distributed along the circumference of the cross-section are provided between the coil detection sleeve 22 and the coil positioning sleeve 23. The upper end face of the coil detection sleeve 22 maintains contact with the lower end of the measuring rod on the displacement sensor 9. The pulley retainer detection assembly, such as... Figure 9 and Figure 10 As shown, it specifically consists of a pulley centering shaft 24 and a pulley detection sleeve 25. The pulley centering shaft 24 is fixedly connected to the lower end of the connecting disc 8 by connecting bolts. Two radially symmetrically arranged limiting pins 26 are installed on the outer circumference. The pulley detection sleeve 25 is fitted onto the outer side of the pulley centering shaft 24. Two strip-shaped slots corresponding to the limiting pins 26 are opened on the side wall. The limiting pins 26 are respectively embedded in the strip-shaped slots. The limiting pins 26 can guide the pulley detection sleeve 25 to move axially relative to the pulley centering shaft 24.

[0024] The online detection system for automotive air conditioning compressor coils and pulley retainers described in this embodiment is used in conjunction with the SV series variable displacement automotive air conditioning compressor assembly line. Specifically, it includes a coil retainer detection system and a pulley retainer detection system. The coil retainer detection system is installed at the rear end of the coil retainer pressing station, and the pulley retainer detection system is installed at the rear end of the pulley retainer pressing station. The usage method and working principle during production line operation are as follows: On the chain conveyor mechanism 10 of the production line, the conveyor tray 12 carries the compressor assembly 20 and moves along the line. At the coil device station and the coil retainer device station, operators manually install the coil and coil retainer 30 onto the compressor assembly 20 in sequence. Then, at the coil retainer pressing station, a pneumatic device presses the coil retainer 30 into the corresponding retainer groove to lock the connection between the coil and the compressor assembly 20. Subsequently, the compressor assembly 20 is conveyed into and confined in the coil retainer detection station, and the coil retainer detection system is then activated. First, the lifting cylinder 5... The lifting plate 6 is activated, causing the positioning pins 11 installed on the lifting plate 6 to be inserted into the positioning slots on the accompanying pallet 12. The upper surface of the lifting plate 6 then supports the lower surface of the accompanying pallet 12, pushing the accompanying pallet 12 away from the chain conveyor mechanism 10 until it is lifted to a limit position above the chain conveyor mechanism 10 at the inspection station. Then, the translation cylinder 14 is activated to fully push the translation fork 15 horizontally, causing the lower support column 17 fixed at the upper end of the translation fork 15 to vertically coincide with the upper support column 18 fixed at the lower end of the lifting plate 6. At this point, the lifting cylinder 5 stops working, and the lifting plate 6 falls back, causing the upper support column 18 and the lower support column 17 to overlap and form a stable supporting structure. Figure 3 As shown, the accompanying tray 12 is securely fixed in the inspection station. Subsequently, the inspection cylinder 7 is activated to push the coil retainer inspection assembly downwards. Figure 7As shown, the coil detection sleeve 22 and the coil positioning sleeve 23 are simultaneously inserted into the annular space between the coil and the compressor cylinder until the lower end face of the coil positioning sleeve 23 rigidly presses against the coil, making the coil and the compressor cylinder in close contact. At this time, the lower end face of the coil detection sleeve 22 elastically abuts against the coil retainer 30, and the coil detection sleeve 22 will move upward relative to the coil positioning sleeve 23 due to the reaction force of the coil retainer 30. The amount of displacement directly reflects the spatial position of the coil retainer 30 relative to the coil and is detected and displayed by the displacement sensor 9 through the measuring rod. By comparing the acquired displacement data with the data under the reference calibration state, it can be determined whether the coil retainer 30 is installed in place. After the detection is completed, the detection cylinder 7 is fully lifted upward to reset the coil retainer detection assembly. The lifting cylinder 5 is activated again to push the lifting plate 6, loosening the support engagement between the lower support column 17 and the upper support column 18. The translation cylinder 14 is activated to fully pull back the horizontal plate. The shift fork 15 shifts the lower support column 17 and the upper support column 18 to a different position. The lifting cylinder 5 then pulls down the lifting plate 6, returning the wire-following tray 12 to the chain conveyor mechanism 10. The lifting plate 6 disengages from the support of the wire-following tray 12 and returns to its original position. The chain conveyor mechanism 10 then releases the forward movement restriction on the wire-following tray 12, completing the detection of the installation status of the coil retainer 30. Furthermore, the wire-following tray 12 continues to move forward with the wire, and the pulley device... At the pulley clamping station and the belt pulley clamping device station, operators manually install the pulley and belt pulley clamping ring 31 onto the compressor assembly 20 in sequence. Then, at the pulley pressing station, a pneumatic device presses the belt pulley clamping ring 31 into the corresponding clamping groove to lock the connection between the pulley and the compressor assembly 20. Subsequently, the compressor assembly 20 is conveyed into and confined in the belt pulley clamping ring detection station, and the belt pulley clamping ring detection system is then started. First, as... Figure 3 As shown, the lifting mechanism securely holds the wire tray 12 within the inspection station. The operating steps and principle of the lifting mechanism are exactly the same as those in the coil retaining ring inspection system. Subsequently, the inspection cylinder 7 is activated to push the pulley retaining ring inspection assembly downwards. Figure 9As shown, the pulley detection sleeve 25 is inserted into the annular space between the pulley and the compressor cylinder, and the pulley centering shaft 24 is inserted into the central shaft hole of the compressor cylinder until the outer circumferential shoulder surface of the pulley centering shaft 24 rigidly presses against the upper end surface of the central shaft sleeve of the compressor cylinder. At this time, the lower end surface of the pulley detection sleeve 25 elastically abuts against the pulley retainer 31, and the pulley detection sleeve 25 will move upward relative to the pulley centering shaft 24 due to the reaction force of the pulley retainer 31. The amount of displacement directly reflects the spatial position of the pulley retainer 31 relative to the compressor cylinder and is measured by the displacement sensor 9 through the measuring rod. The test results show that by comparing the acquired displacement data with the data under the reference calibration state, it can be determined whether the pulley retainer 31 is installed in place. After the test is completed, the detection cylinder 7, the lifting cylinder 5, and the translation cylinder 14 reset the detection mechanism and the lifting mechanism in sequence according to the same timing steps as in the coil retainer detection system. The chain conveyor mechanism 10 then releases the forward movement restriction on the line tray 12, completing the test of the installation status of the pulley retainer 31. After that, the line tray 12 carries the compressor assembly 20 and continues to move along the line on the chain conveyor mechanism 10, successively completing the corresponding assembly process at subsequent workstations until the complete assembly of the compressor is completed.

Claims

1. An online testing system for automotive air conditioning compressor coils and pulley retaining rings, characterized in that, include: The structure includes a frame, a lifting mechanism, and a testing mechanism. Specifically, the frame includes a main frame (1), which is fixedly mounted on the lower part of the chain conveyor mechanism (10) on the production line. A vertically mounted guide rod (2) is connected to the upper end of the main frame (1), extending upwards to the upper part of the chain conveyor mechanism (10), with a fixed plate (3) mounted on the upper end. The lifting mechanism is correspondingly mounted on the lower part of the chain conveyor mechanism (10), and specifically includes a base plate (4), a lifting cylinder (5), and a lifting plate (6). The base plate (4) is fixedly connected to the main frame (1). The lifting cylinder (5) is vertically fixedly installed on the base plate (4). The lifting plate (6) is horizontally fixedly connected to the piston rod of the lifting cylinder (5). It can be pushed up to the upper part of the chain conveyor mechanism (10) by the lifting cylinder (5). A positioning pin (11) is installed on the upper end plate surface of the lifting plate (6). The positioning pin (11) is aligned with the positioning groove opened on the lower end surface of the line tray (12) of the conveyor compressor assembly (20). It should be configured such that, during the process of the lifting plate (6) being pushed up, the positioning pin (11) can be inserted into the positioning groove to fix the accompanying tray (12) on the lifting plate (6) and lift it together with the lifting plate (6), so that the accompanying tray (12) can be disengaged from the chain conveying mechanism (10); the detection mechanism specifically includes: a detection cylinder (7), a connecting plate (8), a displacement sensor (9) and a probe assembly (13), the detection cylinder (7) being vertically and fixedly installed on the fixed plate (3). The connecting plate (8) is horizontally arranged at the lower part of the fixed plate (3) and connected to the piston rod of the detection cylinder (7). It can be driven to move vertically by the detection cylinder (7). The displacement sensor (9) is fixedly installed on the connecting plate (8). The lower end of the measuring rod on the displacement sensor (9) extends vertically to the lower part of the connecting plate (8). The probe assembly (13) is a coil retaining ring detection assembly or a pulley retaining ring detection assembly, which is connected to the lower end of the connecting plate (8) in correspondence with the measuring rod.

2. The online detection system for automotive air conditioning compressor coils and pulley retaining rings as described in claim 1, characterized in that, The coil retaining ring detection assembly includes: a coil centering shaft (21), a coil detection sleeve (22), and a coil positioning sleeve (23). The coil centering shaft (21) is fixedly connected to the lower end face of the connecting disc (8), and a limiting pin (26) is fixedly installed on its outer circumference. The coil detection sleeve (22) fits around the outside of the coil centering shaft (21). A strip-shaped slot is provided on the side wall of the coil detection sleeve (22) that corresponds to the structure of the limiting pin (26) and is arranged axially. The limiting pin (26) is fitted into the strip-shaped slot. The pin groove limiting fit can guide the coil detection sleeve (22) to move axially relative to the coil centering shaft (21). The coil positioning sleeve (23) is fitted on the outside of the coil detection sleeve (22). It is fixedly connected to the coil centering shaft (21) by the limiting pin (26) and combined with the connecting plate (8) by the coil centering shaft (21). A support spring (27) is provided between the coil detection sleeve (22) and the combination of the connecting plate (8) and the coil positioning sleeve (23) to maintain an axial elastic fit between the coil detection sleeve (22) and the combination of the connecting plate (8) and the coil positioning sleeve (23). At the same time, the upper end face of the coil detection sleeve (22) is in contact with the lower end of the measuring rod on the displacement sensor (9).

3. The online testing system for automotive air conditioning compressor coils and pulley retaining rings as described in claim 1, characterized in that, The pulley retainer detection assembly includes: a pulley centering shaft (24) and a pulley detection sleeve (25). The pulley centering shaft (24) is fixedly connected to the lower end face of the connecting disc (8), and a limit pin (26) is fixedly installed on its outer circumference. The pulley detection sleeve (25) is fitted around the outside of the pulley centering shaft (24). A strip-shaped slot is provided on the side wall of the pulley detection sleeve (25) that corresponds to the structure of the limit pin (26) and is arranged axially. The belt pulley detection sleeve (25) is fitted into the strip-shaped slot and can be guided to move axially relative to the belt pulley centering shaft (24) through the pin groove limiting fit. A support spring (27) is provided between the belt pulley detection sleeve (25) and the connecting plate (8) to maintain an axial elastic fit between the belt pulley detection sleeve (25) and the connecting plate (8). At the same time, the upper end face of the belt pulley detection sleeve (25) is in contact with the lower end of the measuring rod on the displacement sensor (9).

4. The online testing system for automotive air conditioning compressor coils and pulley retaining rings as described in any one of claims 1 to 3, characterized in that, The lifting mechanism further includes: a translation cylinder (14), a translation fork (15), and a support base (16); the translation cylinder (14) and the support base (16) are respectively fixedly installed on the base plate (4). The translation cylinder (14) is horizontally arranged, and the translation fork (15) is fixedly connected to the piston rod of the translation cylinder (14). The translation fork (15) is a fork-shaped structure with two forks, which can be pushed and pulled horizontally by the translation cylinder (14). The two forks are respectively arranged on both sides of the lifting cylinder (5). The lower part of the forks is respectively supported by the horizontally arranged support base (16). A lower support column (16) is fixedly arranged on the upper end surface of the fork. 7) At the same time, an upper support column (18) corresponding to the lower support column (17) is fixedly provided on the lower end surface of the lifting plate (6). When the piston rod of the translation cylinder (14) fully retracts, the upper support column (18) and the lower support column (17) are staggered, so that when the piston rod of the lifting cylinder (5) retracts, the lifting plate (6) can fall fully to the lower part of the chain conveying mechanism (10). When the piston rod of the translation cylinder (14) fully extends forward, the lower support column (17) and the upper support column (18) are aligned and can form a vertical support cooperation with each other, fixing the line tray (12) above the chain conveying mechanism (10).

5. The online testing system for automotive air conditioning compressor coils and pulley retaining rings as described in claim 4, characterized in that: The lifting mechanism is provided with side guide plates (19), and the two side guide plates (19) are respectively provided on both sides of the translation fork (15), and are fixedly connected to the support base (16). They are respectively matched with the fork rod on both sides to limit the movement laterally, and constrain and guide the translation fork (15) to maintain horizontal linear movement.

6. The online testing system for automotive air conditioning compressor coils and pulley retaining rings as described in claim 5, characterized in that: In the structural frame, an adjustable foot cup (28) is installed on the lower end of the support column of the main frame (1).

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