A performance testing device for lightweight trunk cover

Abstract

The present invention discloses a performance testing device for a lightweight luggage trunk cover, which relates to the technical field of automobile component testing. The device comprises a base, two groups of conveyor belt assemblies are symmetrically arranged on the top of the base, an upper frame is arranged above the two groups of conveyor belt assemblies, the clamping feet of the upper frame are fixed to the top of the base, a door frame is fixedly installed on the top of the upper frame, a first slide rail is fixedly installed on the side wall of the door frame, a first slider is slidably connected to the first slide rail, a first motor is fixedly installed on the side wall of the first slider, a first support plate is fixedly installed on the output end of the first motor, an electric-controlled hydraulic rod is arranged in the first support plate, and a detection rod is fixedly installed on the bottom of the electric-controlled hydraulic rod. By controlling the detection rod to simulate the possible scenarios that may occur in the actual application of the cover plate when the cover plate is in the same position, and then the cover plate is tested, thereby meeting the automobile industry's strict quality control requirements for lightweight components.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts detection, in particular to a performance detection device for a lightweight trunk cover. Background Art

[0002] With the advancement of lightweight automotive technology, trunk lids are increasingly being replaced with lightweight, high-strength materials such as honeycomb composites, reinforced plastics, or fiber laminates, replacing traditional metal sheets. While these materials can effectively reduce vehicle weight, the stability of their mechanical properties (such as bending strength, fatigue life, and impact resistance) is significantly affected by the manufacturing process, necessitating precise testing to ensure product reliability. However, existing testing technologies have the following limitations:

[0003] Traditional testing methods are inefficient: The industry generally uses general-purpose mechanical testing machines for single-point testing (such as three-point bending tests). These cannot simulate the comprehensive performance degradation process of trunk lids under dynamic loads (such as vibration from bumpy roads and the impact of frequent opening and closing). In addition, manual operation steps are cumbersome and the testing cycle is long. Therefore, there is an urgent need to develop a dedicated testing device that integrates multi-axis loading, environmental simulation and intelligent analysis to accurately evaluate the comprehensive performance of lightweight trunk lids and meet the automotive industry's stringent requirements for component quality control. Summary of the Invention

[0004] The object of the present invention is to provide a performance testing device for a lightweight trunk cover to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a performance testing device for a lightweight trunk cover, comprising a base, two groups of conveyor belt assemblies are symmetrically arranged on the top of the base, an upper frame is arranged above the two groups of conveyor belt assemblies, the clamping feet of the upper frame are fixed to the top of the base, a door frame is fixedly installed on the top of the upper frame, a first slide rail is fixedly installed on the side wall of the door frame, a first slider is slidably connected to the first slide rail, a first motor is fixedly installed on the side wall of the first slider, a first support plate is fixedly installed on the output end of the first motor, an electric-controlled hydraulic rod is arranged in the first support plate, and a detection rod is fixedly installed on the bottom of the electric-controlled hydraulic rod.

[0006] According to the above technical solution, two guards are symmetrically installed on the top surface of the upper frame, each guard is calibrated and aligned with a group of conveyor belt assemblies, and each guard is provided with a slot facing the direction of the conveyor belt assembly, and a third slide rail is symmetrically arranged in the slot, and the second slider is slidably connected to the third slide rail, and the first support rod is fixedly installed on the side wall of the second slider, and the second support plate is fixedly installed on the end of the first support rod, and the first splint is fixedly installed on the side wall of the second support plate.

[0007] According to the above technical solution, a metal frame is provided inside the shield, the bottom of the metal frame is fixedly mounted on the top surface of the upper frame, and transverse grooves are provided on both side walls of the metal frame. A local detection component for telescopic movement is provided in the transverse grooves, and the local detection component is used to detect the hollow quality of the cover plate;

[0008] A positioning calibrator is arranged on the inner side wall of the metal frame.

[0009] According to the above technical solution, the local detection component includes a fourth slide rail fixedly installed on the top of the protective cover, a third slider is slidably connected to the fourth slide rail, a second support rod is fixedly installed on the side wall of the third slider, a third support plate is fixedly installed on the end of the second support rod, a concave plate is fixedly installed on the top of the third support plate, and a knocking component is arranged under the concave plate, which is used to knock on the cover plate to detect whether the cover plate is hollow.

[0010] According to the above technical solution, the striking assembly includes a first telescopic rod fixedly mounted in the middle area of ​​the side wall of the third sliding block, and a hammer sleeve is fixedly mounted on the end of the first telescopic rod.

[0011] According to the above technical solution, a cover plate limiting assembly is arranged between the two guards, and the cover plate limiting assembly is used to limit the position of the cover plate and detect the restricted cover plate. The cover plate limiting assembly includes a support frame fixedly installed on the top of the upper rack, and a main driving component is arranged on the top of the support frame. A limiting plate is fixedly installed on the output end of the main driving component, and the cover plate is supported by the limiting plate, and the first clamping plate is cooperated to realize multi-area restriction and fixation of the cover plate.

[0012] According to the above technical solution, a negative pressure groove is provided in the middle area of ​​the limiting plate, and the negative pressure groove is connected to the negative pressure machine provided on the rear side of the support frame.

[0013] According to the above technical solution, grooves are provided at the four corners of the limit plate, the electric control springs are fixedly installed in the grooves, and the pressure plates are fixedly installed at the ends of the electric control springs.

[0014] According to the above technical solution, the lifting rod is fixedly installed on the upper area of ​​the support frame, the top of the lifting rod is fixedly installed on the top of the top plate, and the top bearing of the top plate is installed on the upper connecting plate.

[0015] According to the above technical solution, a fifth slide rail is set in the middle of the top of the base, and the intelligent robotic arm is slidably connected to the fifth slide rail. The driving end of the intelligent robotic arm is installed with a splint assembly, which includes two retractable second splints. The second splints are operated through a second telescopic rod set on the driving end of the intelligent robotic arm.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention, by providing a local detection component, simulates all possible scenarios that may occur in the actual application of the cover plate by controlling the detection rod in the same position of the cover plate, and then detects the cover plate, thereby meeting the automotive industry's strict quality control requirements for lightweight components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention Figure 1 ;

[0019] Figure 2 is a schematic diagram of the intelligent robotic arm of the present invention;

[0020] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the present invention Figure 2 ;

[0021] Figure 4 is a schematic diagram of the shield of the present invention;

[0022] Figure 5 It is a schematic diagram of the door frame of the present invention;

[0023] Figure 6 is a schematic diagram of a local detection component of the present invention;

[0024] Figure 7 is a schematic diagram of a detection rod of the present invention;

[0025] Figure 8 It is a schematic diagram of the limiting plate of the present invention;

[0026] Figure 9 is a schematic diagram of the lifting rod and top plate of the present invention;

[0027] In the figure: 1. Base; 2. Conveyor belt assembly; 3. Upper frame; 4. Door frame; 5. First slide rail; 6. First slider; 7. First motor; 8. First support plate; 9. Electric hydraulic lever; 10. Detection lever; 11. Shield; 12. Notch; 13. Third slide rail; 14. Second slider; 15. First support rod; 16. Second support plate; 17. First clamping plate; 18. Metal frame; 19. Horizontal slot; 20. Positioning calibrator; 21. Fourth slide rail 22. Third slider; 23. Second support rod; 24. Third support plate; 25. Concave plate; 26. First telescopic rod; 27. Hammer sleeve; 28. Support frame; 29. ​​Main drive member; 30. Limit plate; 31. Negative pressure groove; 32. Negative pressure machine; 33. Groove; 34. Electric control spring; 35. Press plate; 36. Fifth slide rail; 37. Intelligent robotic arm; 38. Second splint; 39. Second telescopic rod; 40. Lifting rod; 41. Top plate; 42. Upper connecting plate. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-9 The present invention provides a technical solution: a performance testing device for a lightweight luggage trunk cover, comprising a base 1, two sets of conveyor belt assemblies 2 are symmetrically arranged on the top of the base 1, the conveyor belt assembly 2 is a conventional structure, and in this embodiment is used to transport the cover, and the cover is grabbed by an intelligent mechanical arm 37 to a preset position for testing and transportation, and the conveyor belt assembly 2 is controlled by a detection system, an upper frame 3 is arranged above the two sets of conveyor belt assemblies 2, the clamping feet of the upper frame 3 are fixed to the top of the base 1, a door frame 4 is fixedly installed on the top of the upper frame 3, a first slide rail 5 is fixedly installed on the side wall of the door frame 4, a first slider 6 is slidably connected to the first slide rail 5, a first motor 7 is fixedly installed on the side wall of the first slider 6, a first support plate 8 is fixedly installed on the output end of the first motor 7, an electric-controlled hydraulic rod 9 is arranged in the first support plate 8, the electric-controlled hydraulic rod 9 is controlled by the detection system, and a detection rod 10 is fixedly installed on the bottom of the electric-controlled hydraulic rod 9;

[0030] Specifically, the detection system drives the intelligent robotic arm 37 to grab the cover plate from the conveyor belt assembly 2 and transport the cover plate to the bottom of the door frame 4. The shape of the cover plate is as shown in the accompanying drawings. It has structural surfaces on both sides, front side and upper side. After the cover plate is fixed, the detection system drives the first slider 6 to move along the first slide rail 5, and then the first slider 6 drives the first motor 7 to move. The first motor 7 passively moves to drive the first support plate 8 to move. The movement of the first support plate 8 drives the electric-controlled hydraulic rod 9 to move. The electric-controlled hydraulic rod 9 is built into the first support plate 8, and its bottom extends to the outside of the first support plate 8 and is connected to the detection rod 10. At this point, the detection rod 10 One-step movement process is completed. This movement process is the lateral movement process of the detection rod 10. The detection system drives the first motor 7 to operate, and the first motor 7 drives the first support plate 8 to rotate (the rotation angle is a preset angle, which can rotate left and right, usually 0-15 degrees). The rotation of the first support plate 8 drives the electric-controlled hydraulic rod 9 to rotate, and the rotation of the electric-controlled hydraulic rod 9 drives the detection rod 10 to rotate. At this point, the second step movement process of the detection rod 10 is completed. This movement process is the deflection process of the detection rod 10. Through the coordination of the lateral movement process and the deflection process, the detection rod 10 is driven to apply pressure to the cover plate, providing different detection environments for the detection of the cover plate.

[0031] Among them, two guards 11 are symmetrically installed on the top surface of the upper frame 3, each guard 11 is calibrated and aligned with a group of conveyor belt assemblies 2, each guard 11 is provided with a notch 12 facing the direction of the conveyor belt assembly 2, and a third slide rail 13 is symmetrically arranged in the notch 12, and a second slider 14 is slidably connected to the third slide rail 13. A first support rod 15 is fixedly installed on the side wall of the second slider 14, and a second support plate 16 is fixedly installed on the end of the first support rod 15. A first clamping plate 17 is fixedly installed on the side wall of the second support plate 16;

[0032] Specifically, the cover plate is clamped by the intelligent robotic arm 37, and the cover plate is transported to the slot 12 via the intelligent robotic arm 37. The detection system drives the second slider 14 to move along the third slide rail 13, and the second slider 14 drives the first support rod 15 to move, and the first support rod 15 drives the second support plate 16 to move, and the second support plate 16 moves and drives the first clamping plate 17. The first clamping plates 17 on both sides of the same protective cover 11 move toward each other, and the first clamping plates 17 in the two protective covers 11 are operated to perform the first heavy clamping process on the cover plate. Compared with the conventional clamping process of the cover plate, the clamping of the cover plate by this device can complete all the detection processes without changing the position of the cover plate, thereby increasing the detection speed.

[0033] A metal frame 18 is provided inside the shield 11. The bottom of the metal frame 18 is fixedly mounted on the top surface of the upper frame 3. Transverse grooves 19 are provided on both side walls of the metal frame 18. A local detection component for telescopic movement is provided in the transverse grooves 19. The local detection component is used to detect the hollow quality of the cover. The transverse length of the transverse groove 19 matches the concave plate 25, and the longitudinal width of the transverse groove 19 can accommodate the passage of the knocking component.

[0034] A positioning calibrator 20 is provided on the inner side wall of the metal frame 18. The detection system drives the positioning calibrator 20 to detect whether the portion of the cover plate located inside the shield 11 is clamped and fixed within the preset area. If it deviates from the preset area, the detection effect of the local detection component will be inaccurate.

[0035] Specifically, after the cover completes the first clamping process, the cover position detection begins. If the position detection is qualified, the detection system drives the knocking component to operate. If the position detection is unqualified, the detection system drives the intelligent robotic arm 37 to adjust the position of the cover until the position of the cover is qualified.

[0036] Among them, the local detection component includes a fourth slide rail 21 fixedly mounted on the top of the shield 11, and a third slider 22 is slidably connected to the fourth slide rail 21. A second support rod 23 is fixedly mounted on the side wall of the third slider 22, and a third support plate 24 is fixedly mounted on the end of the second support rod 23. A concave plate 25 is fixedly mounted on the top of the third support plate 24. The purpose of providing the concave plate 25 is to reduce the contact area with the cover plate. When the knocking component knocks on the cover plate for detection, due to the shape of the concave plate 25 above it, if the cover plate is hollow or the cover plate to be detected is a thin plate, a camera component can be added to determine the thickness of the cover plate. A knocking component is provided below the concave plate 25, and the knocking component is used to knock on the cover plate to detect whether the cover plate is hollow.

[0037] Specifically, after the detection system confirms that the cover plate is correctly clamped, it starts to drive the knocking component to perform knocking detection on the cover plate. In the first step of the knocking detection process, the detection system drives the knocking component to knock on the cover plate. The detection system sets the knocking speed of the knocking component to V, which is divided into 3 levels from V1 to V3. V1 indicates that the knocking speed of the knocking component is the slowest, and V3 indicates that the knocking speed of the knocking component is the fastest. The detection system drives the knocking component to knock on the cover plate at the V1 level, and obtains the audio data emitted by the cover plate after the knocking through the audio sensor set in the protective cover 11, thereby judging whether the cover plate is hollow. This process is to detect whether the cover plate is hollow, and the required knocking speed is V1. A faster knocking speed will cause damage to the cover plate;

[0038] In the first step of the knock detection process, the detection system drives the knock component to knock the cover plate at the V2 level, and the detection system drives the knock component to knock the cover plate back and forth evenly. During this process, the size of the hollow volume of the cover plate is detected. The detection system obtains the audio data emitted by the cover plate after the knock through the audio sensor and then determines the size range of the hollow volume of the cover plate. Finally, it determines whether the hollow size of the cover plate is within the qualified range. This step also tests the hardness of the cover plate. If the knock component knocks the cover plate at the V2 speed and causes the cover plate to be damaged, the cover plate is unqualified;

[0039] In the third step of the knock detection process, the detection system drives the knocking component to knock the cover plate at the V3 level (the speed is the highest impact rate), and combines with the acceleration sensor (not shown in the figure) set at the bottom of the concave plate 25 to synchronously collect stress wave propagation data at the moment of knocking. At this stage, the boundary of the hollow area of ​​the cover plate is covered by high-frequency knocking (such as 10 times / second). The detection system jointly analyzes the audio data and the stress wave attenuation curve. If there is a support rib fracture or cavity collapse defect inside the hollow structure, the stress wave propagation time will be significantly abnormal. The detection system can obtain data to determine the further situation inside the hollow volume of the cover plate. In the third step of the knock detection process, only the V3 speed can be used to detect the further situation inside the hollow volume of the cover plate. This step also tests the hardness of the cover plate. If the knocking component knocks the cover plate at the V3 speed and causes the cover plate to be damaged, the cover plate is unqualified.

[0040] The above three steps are performed by the two shields 11 simultaneously, and the detection rod 10 does not move;

[0041] In the fourth step of the knock test process, the detection system drives the detection rod 10 to press against the left area above the cover plate. The detection system repeats the first, second, and third steps. This process simulates the situation when the cover plate is installed on an actual product, where only one of the locks on both sides of the cover plate may be locked. The detection system then uses the detection rod 10 to press against half of the cover plate and obtains data after the knock component knocks on the cover plate. This process simulates the hardness and hollow volume performance of the cover plate when one side of the lock fails in actual use.

[0042] In the fifth step of the knock test process, the detection system drives the detection rod 10 to press against the right part of the upper part of the cover plate. The detection system repeats the first, second, and third steps. The detection system then passes the detection rod 10 to press against the other half of the cover plate, obtaining data after the knock component knocks on the cover plate. This process simulates the hardness and hollow volume performance of the cover plate when one side of the lock fails in actual use.

[0043] In the sixth step of the knock test process, the detection system drives the detection rod 10 to press against the middle area above the cover plate. The detection system repeats the first, second, and third steps. The detection system then uses the detection rod 10 to press against the middle area above the cover plate and obtains data after the knock component knocks on the cover plate. This process simulates the hardness and hollow volume of the cover plate when one side of the lock fails in actual use.

[0044] By controlling the detection rod 10 to keep the cover in the same position, all possible scenarios that may occur in the actual application of the cover are simulated, and then the cover is tested to meet the automotive industry's strict quality control requirements for lightweight components (such as honeycomb composite materials and fiber laminates).

[0045] The striking assembly includes a first telescopic rod 26 fixedly mounted on the middle area of ​​the side wall of the third slider 22, and a hammer sleeve 27 fixedly mounted on the end of the first telescopic rod 26;

[0046] Specifically, the detection system drives the first telescopic rod 26 to move and drive the hammer sleeve 27 to perform a single operation or a reciprocating operation. During the movement of the hammer sleeve 27, the cover plate is struck through the transverse groove 19.

[0047] Among them, a cover plate limiting assembly is set between the two guards 11. The cover plate limiting assembly is used to limit the position of the cover plate and detect the restricted cover plate. The cover plate limiting assembly includes a support frame 28 fixedly mounted on the top of the upper frame 3. A main driving member 29 is set on the top of the support frame 28. A limiting plate 30 is fixedly mounted on the output end of the main driving member 29. The limiting plate 30 is pressed against the cover plate and cooperates with the first clamping plate 17 to realize multi-area restriction and fixation of the cover plate. The first clamping plate 17 in the guard 11 clamps and fixes the two sides of the cover plate, and the limiting plate detects the middle area of ​​the cover plate.

[0048] Specifically, the detection system drives the main driving part 29 to move the limit plate 30 toward the cover plate until the limit plate 30 presses against the cover plate. The limit plate 30 presses against the cover plate in combination with the two first clamping plates 17 to form a restriction on the cover plate, so that the cover plate remains stable when undergoing the knocking detection process.

[0049] A negative pressure groove 31 is set in the middle area of ​​the limit plate 30, and the negative pressure groove 31 is connected to the negative pressure machine 32 set on the rear side of the support frame 28. The negative pressure machine 32 is an existing technical structure, and its main function is to be regulated by the detection system and to adsorb the cover plate through the negative pressure groove 31 to further limit the position of the cover plate.

[0050] Grooves 33 are provided at the four corners of the limit plate 30, and an electric control spring 34 is fixedly installed in the groove 33. A pressure plate 35 is fixedly installed at the end of the electric control spring 34. The pressure plate 35 contacts the cover plate first. After the limit plate 30 moves to contact the cover plate, the detection system continues to drive the main drive part 29 to drive the limit plate 30 to move until the pressure plate 35 contacts the cover plate, and the cover plate itself is retracted into the groove 33 by applying pressure. During the retraction of the pressure plate 35, the electric control spring 34 transmits compression data to the detection system, and the detection system obtains the data. When the electric control spring 34 reaches a preset value, it stops driving the main drive part 29 to run. At this time, the outer surface of the pressure plate 35 is flat with the limit plate 30, and then the detection system drives the negative pressure machine 32 to run, and the negative pressure machine 32 is used to limit the cover plate.

[0051] Among them, the upper area of ​​the support frame 28 is fixedly installed with a lifting rod 40, the top of the lifting rod 40 is fixedly installed with a top plate 41, and the top bearing of the top plate 41 is installed with an upper connecting plate 42. After completing the knocking detection process, the detection system starts the bending detection process. The detection system first drives the detection rod 10 to press against the left end area above the cover plate, and then drives the lifting rod 40 to rise, driving the top plate 41 to rise. The rise of the top plate 41 drives the upper connecting plate 42 to rise until the upper connecting plate 42 presses against the cover plate. Since the upper connecting plate 42 is a bearing setting, the upper connecting plate 42 has a high fit with the cover plate. The detection system drives the upper connecting plate 42 to continue to rise, and in this way simulates the stress condition of the cover plate when the unilateral lock fails in actual use. The detection system continuously increases the jacking force of the lifting rod 40. If the jacking force of the lifting rod 40 increases to the maximum and the cover plate is not damaged, it indicates that the cover plate is qualified. Then the detection system first drives the detection rod 10 to press against the right end area above the cover plate, and repeats the above process to detect whether the cover plate is qualified.

[0052] Specifically, when simulating the failure of the lock on one side of the cover, the stress conditions on the left and right sides of the cover are detected, and the stress conditions are monitored by a visual inspection system arranged on the outside.

[0053] Among them, a fifth slide rail 36 is set in the middle of the top of the base 1, and an intelligent robotic arm 37 is slidably connected to the fifth slide rail 36. A splint assembly is installed on the driving end of the intelligent robotic arm 37. The splint assembly includes two retractable second splints 38. The second splints 38 are operated by a second telescopic rod 39 set on the driving end of the intelligent robotic arm 37. After the intelligent robotic arm 37 is started, the detection system drives the second telescopic rod 39 to operate, and the operation of the second telescopic rod 39 drives the second splint 38 to perform clamping and releasing steps to complete the clamping of the cover.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A performance testing device for a lightweight luggage trunk cover, comprising a base (1), characterized in that: Two groups of conveyor belt assemblies (2) are symmetrically arranged on the top of the base (1), an upper frame (3) is arranged above the two groups of conveyor belt assemblies (2), the clamping feet of the upper frame (3) are fixed to the top of the base (1), a door frame (4) is fixedly installed on the top of the upper frame (3), a first slide rail (5) is fixedly installed on the side wall of the door frame (4), a first slider (6) is slidably connected on the first slide rail (5), a first motor (7) is fixedly installed on the side wall of the first slider (6), an output end of the first motor (7) is fixedly installed with a first support plate (8), an electric-controlled hydraulic rod (9) is arranged in the first support plate (8), and a detection rod (10) is fixedly installed on the bottom of the electric-controlled hydraulic rod (9); Two guards (11) are symmetrically mounted on the top surface of the upper frame (3), each guard (11) is aligned with a group of conveyor belt assemblies (2), each guard (11) is provided with a slot (12) in the direction of the conveyor belt assembly (2), a third slide rail (13) is symmetrically arranged in the slot (12), a second slider (14) is slidably connected to the third slide rail (13), a first support rod (15) is fixedly mounted on the side wall of the second slider (14), a second support plate (16) is fixedly mounted on the end of the first support rod (15), and a first clamping plate (17) is fixedly mounted on the side wall of the second support plate (16); A metal frame (18) is provided in the shield (11), the bottom of the metal frame (18) is fixedly mounted on the top surface of the upper frame (3), and transverse grooves (19) are provided on both side walls of the metal frame (18). A local detection component for telescopic movement is provided in the transverse groove (19), and the local detection component is used to detect the hollow quality of the cover plate; A positioning calibrator (20) is provided on the inner side wall of the metal frame (18); The local detection component comprises a fourth slide rail (21) fixedly mounted on the top of the shield (11); a third slider (22) is slidably connected to the fourth slide rail (21); a second support rod (23) is fixedly mounted on the side wall of the third slider (22); a third support plate (24) is fixedly mounted on the end of the second support rod (23); a concave plate (25) is fixedly mounted on the top of the third support plate (24); a knocking component is arranged below the concave plate (25); and the knocking component is used to knock on the cover plate to detect whether the cover plate is hollow.

2. The performance testing device for a lightweight trunk cover according to claim 1, characterized in that: The striking assembly comprises a first telescopic rod (26) fixedly mounted in the middle area of ​​the side wall of the third sliding block (22), and a hammer sleeve (27) is fixedly mounted at the end of the first telescopic rod (26).

3. The performance testing device for a lightweight luggage compartment cover according to claim 2, characterized in that: A cover plate limiting assembly is provided between the two guards (11), and the cover plate limiting assembly is used to limit the position of the cover plate and detect the restricted cover plate. The cover plate limiting assembly includes a support frame (28) fixedly mounted on the top of the upper frame (3), a main driving member (29) is provided on the top of the support frame (28), and a limiting plate (30) is fixedly mounted on the output end of the main driving member (29). The limiting plate (30) is used to press against the cover plate, and cooperates with the first clamping plate (17) to achieve multi-region limiting fixation of the cover plate.

4. The performance testing device for a lightweight trunk cover according to claim 3, characterized in that: A negative pressure groove (31) is provided in the middle area of ​​the limiting plate (30), and the negative pressure groove (31) is connected to a negative pressure machine (32) provided on the rear side of the support frame (28).

5. The performance testing device for a lightweight trunk cover according to claim 4, characterized in that: Grooves (33) are provided at the four corners of the limiting plate (30), an electric control spring (34) is fixedly installed in the groove (33), and a pressure plate (35) is fixedly installed at the end of the electric control spring (34).

6. The performance testing device for a lightweight trunk cover according to claim 5, characterized in that: A lifting rod (40) is fixedly mounted on the upper region of the support frame (28), a top plate (41) is fixedly mounted on the top of the lifting rod (40), and a connecting plate (42) is mounted on the top bearing of the top plate (41).

7. The performance testing device for a lightweight luggage trunk cover according to claim 6, characterized in that: A fifth slide rail (36) is provided in the middle of the top of the base (1), and an intelligent robotic arm (37) is slidably connected to the fifth slide rail (36). A splint assembly is installed on the driving end of the intelligent robotic arm (37), and the splint assembly includes two retractable second splints (38). The second splints (38) are operated through a second telescopic rod (39) provided on the driving end of the intelligent robotic arm (37).

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