Vehicle bumper detection tool and detection method

Abstract

The present invention belongs to the field of bumper detection technology, specifically a vehicle bumper detection tool and detection method, including a detection platform and a multi-angle simulation component; the multi-angle simulation component includes a slide; the upper side of the slide is fixedly connected to a guide box through a support column; the guide box is slidably connected to a movable seat; the guide box is rotatably connected to a drive rod; the drive rod passes through the movable seat and is connected to it through a screw nut pair; the surface of the movable seat is fixedly connected to a connecting rod; the end of the connecting rod is fixedly connected to a contact piece; a load sensor is provided between the connecting rod and the movable seat. By adjusting the position of the multi-angle simulation component, the direction of the load on the bumper during the impact test is changed, so that all angles of the front and side of the bumper can be loaded. This fully simulates the collision situation of the vehicle during actual driving and truly reflects the anti-collision performance of the bumper.

Description

Technical Field

[0001] The invention belongs to the technical field of bumper detection, in particular to a vehicle bumper detection tool and a detection method. Background Art

[0002] Bumpers are protective devices on the exterior of a vehicle, primarily installed at the front and rear of the vehicle body. They absorb the impact of a collision, minimizing injury to the vehicle and its occupants, while also protecting other critical vehicle components from damage. Bumpers play a crucial role in ensuring safety during collisions and are an integral component of modern automotive design, making their testing crucial. Before leaving the factory, bumpers are typically subjected to simulated collisions, undergoing impact and compression tests to fully verify their performance.

[0003] A Chinese patent application, CN213336705U, discloses an impact test device for automobile bumper processing. The key technical features of the device include a main body, a pressure regulator, an anti-vibration spring, an infrared heating layer, and a clamp. The main body has a base mounted on its bottom, a telescopic rod mounted on its inner bottom, a limit block mounted on its top, a moving rod mounted inside the limit block, a clamp mounted on one end of the moving rod, and an extrusion block mounted above the clamp. A test bench is mounted on top of the base, and an anti-vibration spring is mounted above the test bench. The device is equipped with a pressure regulator and an anti-vibration spring. The pressure regulator facilitates control of the force applied by the impact block during use, allowing users to understand how the bumper deforms under varying forces, improving user experience. The anti-vibration spring increases the stability of the test bench and enhances the practicality of the main body.

[0004] However, the above technologies often have the following defects: the existing bumper detection device can only impact and squeeze the bumper in a single direction, that is, it can only simulate a frontal impact on the bumper. However, during actual driving of a vehicle, the direction of impact on the bumper is complex and is often not as simple as a frontal impact. Therefore, the existing detection device has a poor collision simulation effect on the bumper and it is difficult to accurately reflect the actual performance of the bumper during a collision.

[0005] To this end, the present invention provides a vehicle bumper detection tool and a detection method. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a vehicle bumper inspection tool of the present invention comprises a testing platform and a multi-angle simulation component;

[0008] The surface of the testing platform is used to place the bumper; the upper side of the testing platform is fixedly connected to a platform; the surface of the testing platform is provided with a slide groove, and the slide groove is designed to be curved;

[0009] The multi-angle simulation component is used to simulate the squeezing of the bumper in different directions and detect its load-bearing capacity; the multi-angle simulation component includes a slide seat slidably connected to the inside of the slide slot; the upper side of the slide seat is fixedly connected to a guide box through a support column, and the guide box remains perpendicular to the slide slot; a movable seat is slidably connected to the inside of the guide box; a drive rod is rotatably connected to the inside of the guide box, and the drive rod is connected to a motor; the drive rod passes through the inside of the movable seat and is connected to it through a screw nut pair; a connecting rod is fixedly connected to the surface of the movable seat; a contact piece is fixedly connected to the end of the connecting rod; a load sensor is provided between the connecting rod and the movable seat.

[0010] Preferably, a supporting block and a pair of limiting plates are fixedly connected to the side surface of the platform, and the pair of limiting plates are located on both sides of the supporting block; and the surface of the supporting block is designed to be curved.

[0011] Preferably, a fixing component is provided between the multi-angle simulation component and the slide; the fixing component is used to fix the slide inside the slide; the fixing component includes a friction block and a connecting plate which are respectively slidably connected to the slide and the inside of the support column, and the friction block is fixedly connected to the connecting plate; an adjusting rod is rotatably connected to the surface of the support column; the adjusting rod passes through the connecting plate and is connected to it through a screw nut pair; the end of the adjusting rod is fixedly connected to a handwheel.

[0012] Preferably, a strip resistor is fixedly connected inside the guide box; a conductive spring is fixedly connected to the lower side of the movable seat, and the conductive spring is in contact with the strip resistor.

[0013] Preferably, a group of sleeves are evenly distributed on the surface of the contact piece; a slider is slidably connected inside the sleeve; a spring 1 is fixedly connected between the slider and the sleeve; a ball head is provided inside the slider; a guide rod is fixedly connected to the surface of the ball head; the end of the guide rod extending outside the sleeve is fixedly connected to a pressure block, and the pressure block is designed to be conical; a spring 2 is fixedly connected between the pressure block and the sleeve.

[0014] Preferably, a suction cup is fixedly connected to a side of the pressing block away from the sleeve.

[0015] Preferably, an annular elastic member is fixedly connected between the side of the slider close to the pressing block and the sleeve, and the elastic member is designed to be a hollow structure; the elastic member is connected to the inner side of the suction cup through a conduit.

[0016] Preferably, a drainage piece is fixedly connected to the inner side of the suction cup at a position corresponding to the catheter; and a gap exists between the drainage piece and the inner side of the suction cup.

[0017] A vehicle bumper inspection method, using the above-mentioned vehicle bumper inspection tool, comprises the following steps:

[0018] S1: Place the bumper on the surface of the test bench so that the concave surface of the bumper rests against the side of the support block of the bench and both ends of the bumper are located between the support block and the limit plate;

[0019] S2: Slide the slide to adjust its position inside the slide slot, so that the guide box can align with the bumper at different angles. The handwheel drives the adjustment rod to rotate, controlling the friction block to squeeze and fit against the side wall of the slide slot. The friction force limits the slide to achieve multi-angle fixation of the simulation component.

[0020] S3: The motor controls the driving rod to rotate, driving the movable seat to slowly approach the bumper, and then the contact piece is attached to the bumper surface. As the movable seat continues to move forward, the load sensor measures the load data on the bumper.

[0021] S4: By connecting the strip resistor and the conductive spring to the measurement circuit and the data processing module, the resistance value and length of the strip resistor connected to the measurement circuit continuously change during the feeding process of the movable seat;

[0022] S5: By recording the resistance value and length of the strip resistor connected to the circuit at different time nodes, the data processing module calculates the length difference before and after, that is, the deformation of the bumper is obtained to understand the deformation of the bumper.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The vehicle bumper testing tool and testing method described in the present invention changes the direction of the load applied to the bumper during the impact test by adjusting the position of the multi-angle simulation component, allowing loading tests to be performed at all angles of the front and side of the bumper, restoring the bumper's crushing deformation process, thereby fully simulating the collision conditions of the vehicle during actual driving and truly reflecting the bumper's collision avoidance performance.

[0025] 2. The vehicle bumper inspection tooling and inspection method described in the present invention, by setting a supporting block and a limit plate, places the bumper on the side of the supporting block during inspection, and makes the two ends of the bumper located between the supporting block and the limit plate. On the one hand, the supporting block is used to further simulate the front or rear of the vehicle to restore the real collision conditions. On the other hand, the bumper is limited and fixed to prevent the contact parts from pressing against the bumper surface during the test, causing the bumper to shift or deviate.

[0026] 3. The vehicle bumper detection tooling and detection method described in the present invention can measure the deformation of the bumper in real time by setting up a strip resistor and a conductive spring to slide with each other and connecting the corresponding measurement circuit and data processing module. The specific process is: during the feeding of the movable seat, the resistance value and length of the strip resistor connected to the measurement circuit continuously change. When the contact piece just starts to contact the bumper, the value of the load sensor suddenly changes from zero. This time node corresponds to a resistance value and length of the strip resistor. As the movable seat continues to feed, the strip resistor corresponds to another resistance value and length in real time. The data processing module is used to calculate the length difference between the two time nodes to obtain the bumper's collapse deformation data, which is convenient for testers to understand the deformation of the bumper. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 is a perspective view of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the multi-angle simulation component of the present invention;

[0030] Figure 3 This is a schematic structural diagram of the multi-angle simulation component of the present invention from another perspective;

[0031] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0032] Figure 5 It is a schematic structural diagram of the contact member in the present invention;

[0033] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0034] Figure 7 It is a schematic structural diagram of the sleeve and the pressing block in the present invention;

[0035] Figure 8 It is a schematic flow chart of the method of the present invention.

[0036] In the figure: test bench 1, bumper 2, support platform 3, slide 4, slide seat 5, support column 6, guide box 7, movable seat 8, drive rod 9, motor 10, connecting rod 11, contact member 12, load sensor 13, supporting block 14, limit plate 15, friction block 16, connecting plate 17, adjusting rod 18, handwheel 19, strip resistor 20, conductive spring 21, sleeve 22, slider 23, spring 1 24, ball head 25, guide rod 26, pressure block 27, spring 2 28, suction cup 29, elastic member 30, conduit 31, drainage sheet 32. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0038] like Figures 1 to 7 As shown, a vehicle bumper inspection tool according to the present invention includes a testing platform 1 and a multi-angle simulation component;

[0039] The surface of the testing platform 1 is used to place the bumper 2; a support 3 is fixedly connected to the upper side of the testing platform 1; a slide 4 is provided on the surface of the testing platform 1, and the slide 4 is designed to be curved and adapted to the shape of the bumper 2;

[0040] The multi-angle simulation component is used to simulate the squeezing of the bumper 2 in different directions and detect its load-bearing capacity; the multi-angle simulation component includes a slide 5 slidably connected to the inside of the slide groove 4; the upper side of the slide 5 is fixedly connected to a guide box 7 through a support column 6, and the guide box 7 remains perpendicular to the slide groove 4; the inside of the guide box 7 is slidably connected to a movable seat 8; the inside of the guide box 7 is rotatably connected to a drive rod 9, and the drive rod 9 is connected to a motor 10; the drive rod 9 passes through the inside of the movable seat 8 and is connected to it through a screw nut pair; the surface of the movable seat 8 is fixedly connected to a connecting rod 11; the end of the connecting rod 11 is fixedly connected to a contact piece 12; a load sensor 13 is arranged between the connecting rod 11 and the movable seat 8.

[0041] The bumper 2 detection device in the prior art can only impact and squeeze the bumper 2 in a single direction, that is, it can only simulate a frontal collision of the bumper 2. However, during actual driving of the vehicle, the direction of the collision suffered by the bumper 2 is complicated and is often not as simple as a frontal collision. Therefore, the existing detection device has a poor collision simulation effect on the bumper 2 and is difficult to accurately reflect the actual performance of the bumper 2 during the collision.

[0042] When in use, the present invention places the bumper 2 on the surface of the testing table 1 so that the concave surface of the bumper 2 rests against the side of the platform 3, and then slides the slide 5 to adjust its position inside the slide groove 4, so that the guide box 7 can be aligned with the bumper 2 at different angles, and then controls the driving rod 9 to rotate by the motor 10, driving the movable seat 8 to slowly approach the bumper 2, and then the contact piece 12 is attached to the surface of the bumper 2. As the movable seat 8 continues to feed, the load data of the bumper 2 is measured by the load sensor 13, thereby completing the overall detection of the bumper 2, reflecting the anti-collision performance of the bumper 2.

[0043] The above process uses load sensor 13 to detect the load applied to bumper 2. There are three specific methods: first, applying a rated load to observe the deformation of bumper 2; second, observing the load applied after bumper 2 reaches the rated deformation; and third, continuously advancing movable seat 8 to gradually increase the applied load until bumper 2 reaches its limit of deformation and collapses, at which point the load applied is observed. Testers can choose to perform one or more of these three methods to test the strength, toughness, elasticity, and other properties of bumper 2.

[0044] The present invention changes the direction of the load applied to the bumper 2 during the impact test by adjusting the position of the multi-angle simulation component, so that loading tests can be performed at all angles of the front and side of the bumper 2, restoring the crushing deformation process of the bumper 2, thereby fully simulating the collision conditions of the vehicle during actual driving and truly reflecting the anti-collision performance of the bumper 2.

[0045] A support block 14 and a pair of limiting plates 15 are fixedly connected to the side of the platform 3, with the limiting plates 15 located on either side of the support block 14. The surface of the support block 14 is designed to be curved to match the shape of the bumper 2. By providing the support block 14 and limiting plates 15, the bumper 2 is placed against the side of the support block 14 during testing, with both ends of the bumper 2 located between the support block 14 and the limiting plates 15. This not only allows the support block 14 to further simulate the front or rear of the vehicle, recreating realistic collision conditions, but also limits and secures the bumper 2, preventing the contact member 12 from pressing against the surface of the bumper 2 during testing, which could cause the bumper 2 to shift or deviate.

[0046] As a preferred embodiment of the present invention, a fixing assembly is provided between the multi-angle simulation assembly and the chute 4. The fixing assembly is used to secure the slide 5 within the chute 4. The fixing assembly includes a friction block 16 and a connecting plate 17, which are slidably connected to the slide 5 and the support column 6, respectively. The friction block 16 is fixedly connected to the connecting plate 17. An adjustment rod 18 is rotatably connected to the surface of the support column 6. The adjustment rod 18 passes through the connecting plate 17 and is connected thereto via a screw-nut pair. A handwheel 19 is fixedly connected to the end of the adjustment rod 18. After adjusting the position of the multi-angle simulation assembly, the handwheel 19 drives the adjustment rod 18 to rotate, controlling the movement of the connecting plate 17 and the friction block 16 within the support column 6 and the slide 5, respectively. The friction block 16 then protrudes from the surface of the slide 5 and presses against the sidewall of the chute 4. The friction force limits the slide 5 and prevents it from sliding sideways, thereby fixing the position of the multi-angle simulation assembly and preventing shaking or offsetting of the multi-angle simulation assembly during testing.

[0047] As a preferred embodiment of the present invention, a bar resistor 20 is fixedly connected to the interior of the guide box 7; a conductive spring 21 is fixedly connected to the lower side of the movable seat 8, and the conductive spring 21 is in contact with the bar resistor 20. By setting the bar resistor 20 and the conductive spring 21 to slide with each other and connecting the corresponding measurement circuit and data processing module, the deformation of the bumper 2 can be measured in real time. The specific process is as follows: during the feeding process of the movable seat 8, the resistance value and length of the bar resistor 20 connected to the measurement circuit continuously change. When the contact member 12 just starts to contact the bumper 2, the value of the load sensor 13 suddenly changes from zero. This time node corresponds to a resistance value and length of the bar resistor 20. As the movable seat 8 continues to feed, the bar resistor 20 corresponds to another resistance value and length in real time. The length difference between the two time nodes is calculated by the data processing module to obtain the crushing deformation data of the bumper 2, which is convenient for testers to understand the deformation of the bumper 2.

[0048] As a preferred embodiment of the present invention, a group of sleeves 22 are evenly distributed on the surface of the contact member 12; a slider 23 is slidably connected inside the sleeve 22; a spring 24 is fixedly connected between the slider 23 and the sleeve 22; a ball head 25 is provided inside the slider 23; a guide rod 26 is fixedly connected to the surface of the ball head 25; the guide rod 26 extends to one end outside the sleeve 22 and is fixedly connected to a pressure block 27, and the pressure block 27 is designed to be conical; a spring 28 is fixedly connected between the pressure block 27 and the sleeve 22. When the contact piece 12 is attached to the surface of the bumper 2, the pressure block 27 is squeezed by the bumper 2, driving the slider 23 to move inside the sleeve 22 and compressing the spring 1 24. By setting the spring 1 24 and the spring 2 28 to cooperate with each other, and the pressure block 27 can drive the ball head 25 to rotate inside the slider 23, the pressure block 27 can adapt to the irregular surface of the bumper 2, improve the contact and extrusion efficiency between the contact piece 12 and the bumper, prevent slippage between the contact piece 12 and the bumper 2 during the test, and improve the problem of uneven load on the bumper 2.

[0049] As a preferred embodiment of the present invention, a suction cup 29 is fixedly connected to the side of the pressure block 27 away from the sleeve 22. By providing the suction cup 29 to be adsorbed on the surface of the bumper 2, the fixing effect between the pressure block 27 and the bumper 2 can be improved, further preventing the contact member 12 from sliding on the surface of the bumper 2.

[0050] An annular elastic member 30 is fixedly connected between the side of the slider 23 near the pressure block 27 and the sleeve 22. The elastic member 30 is designed to be hollow. The elastic member 30 is connected to the inner side of the suction cup 29 via a conduit 31. As the contact member 12 comes into contact with the bumper 2, the pressure block 27 drives the slider 23 to move within the sleeve 22. The slider 23 stretches and expands the elastic member 30, and then uses the conduit 31 to draw air inside the suction cup 29 into the elastic member 30, fully discharging the air between the suction cup 29 and the bumper 2 and improving the suction efficiency of the suction cup 29. In addition, when the movable seat 8 subsequently moves away from the bumper 2, the spring 1 24 pushes the slider 23 back to its original position. At this time, the slider 23 squeezes the elastic member 30, forcing the air inside the elastic member 30 into the space between the suction cup 29 and the bumper 2 through the conduit 31, breaking the negative pressure environment inside the suction cup 29 and allowing the suction cup 29 to quickly separate from the bumper 2.

[0051] As a preferred embodiment of the present invention, a drainage piece 32 is fixedly connected to the inner side of the suction cup 29 at a position corresponding to the conduit 31; a gap exists between the drainage piece 32 and the inner side of the suction cup 29. The provision of the drainage piece 32 allows air inside the elastic member 30 to be squeezed into the suction cup 29 through the conduit 31. The airflow can flow along the drainage piece 32 toward the inner wall of the suction cup 29, thereby removing dust and other contaminants adhering to the inner side of the suction cup 29. This allows the suction cup 29 to self-clean, preventing contaminants from affecting its adhesion to the bumper 2.

[0052] like Figure 8 As shown, a vehicle bumper detection method according to the present invention, which uses the above-mentioned vehicle bumper detection tooling, includes the following steps:

[0053] S1: Place the bumper 2 on the surface of the test platform 1 so that the concave surface of the bumper 2 abuts against the side of the support block 14 of the platform 3, and the two ends of the bumper 2 are located between the support block 14 and the limit plate 15;

[0054] S2: Slide the slide 5 to adjust its position inside the chute 4 so that the guide box 7 can align with the bumper 2 at different angles. The hand wheel 19 drives the adjustment rod 18 to rotate, controlling the friction block 16 to press and fit against the side wall of the chute 4. The friction force is used to limit the slide 5, thus achieving the fixation of the multi-angle simulation component.

[0055] S3: The motor 10 controls the driving rod 9 to rotate, driving the movable seat 8 to slowly approach the bumper 2, so that the contact member 12 is attached to the surface of the bumper 2. As the movable seat 8 continues to advance, the load sensor 13 measures the load data on the bumper 2;

[0056] S4: By connecting the strip resistor 20 and the conductive spring 21 to the measuring circuit and the data processing module, the resistance value and length of the strip resistor 20 connected to the measuring circuit continuously change during the feeding process of the movable seat 8;

[0057] S5: By recording the resistance value and length of the strip resistor 20 connected to the circuit at different time nodes, the data processing module calculates the length difference before and after, that is, the deformation of the bumper 2 is obtained to understand the deformation of the bumper 2.

[0058] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the scope of protection of the present invention.

[0060] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle bumper inspection tool, characterized by: It includes a test bench (1) and a multi-angle simulation component; The surface of the testing platform (1) is used to place the bumper (2); a support platform (3) is fixedly connected to the upper side of the testing platform (1); a slide groove (4) is provided on the surface of the testing platform (1), and the slide groove (4) is designed to be curved; The multi-angle simulation component is used to simulate squeezing the bumper (2) in different directions and detect its load-bearing capacity; the multi-angle simulation component includes a slide (5) slidably connected to the inside of the slide groove (4); the upper side of the slide (5) is fixedly connected to a guide box (7) through a support column (6), and the guide box (7) is kept perpendicular to the slide groove (4); the inside of the guide box (7) is slidably connected to a movable seat (8); the inside of the guide box (7) is rotatably connected to a drive rod (9), and the drive rod (9) is connected to a motor (10); the drive rod (9) passes through the inside of the movable seat (8) and is connected to it through a screw nut pair; the surface of the movable seat (8) is fixedly connected to a connecting rod (11); the end of the connecting rod (11) is fixedly connected to a contact piece (12); a load sensor (13) is provided between the connecting rod (11) and the movable seat (8); A group of sleeves (22) are evenly distributed on the surface of the contact member (12); a slider (23) is slidably connected inside the sleeve (22); a spring (24) is fixedly connected between the slider (23) and the sleeve (22); a ball head (25) is provided inside the slider (23); a guide rod (26) is fixedly connected to the surface of the ball head (25); one end of the guide rod (26) extending outside the sleeve (22) is fixedly connected to a pressure block (27), and the pressure block (27) is designed to be conical; a spring (28) is fixedly connected between the pressure block (27) and the sleeve (22).

2. The vehicle bumper inspection tool according to claim 1, characterized in that: A supporting block (14) and a pair of limiting plates (15) are fixedly connected to the side of the platform (3), and the pair of limiting plates (15) are located on both sides of the supporting block (14); the surface of the supporting block (14) is designed to be curved.

3. The vehicle bumper inspection tool according to claim 2, characterized in that: A fixing assembly is provided between the multi-angle simulation assembly and the slide groove (4); the fixing assembly is used to fix the slide (5) inside the slide groove (4); the fixing assembly comprises a friction block (16) and a connecting plate (17) which are respectively slidably connected to the slide (5) and the support column (6), and the friction block (16) is fixedly connected to the connecting plate (17); an adjusting rod (18) is rotatably connected to the surface of the support column (6); the adjusting rod (18) passes through the connecting plate (17) and is connected to it through a screw nut pair; and a hand wheel (19) is fixedly connected to the end of the adjusting rod (18).

4. The vehicle bumper inspection tool according to claim 3, characterized in that: A strip resistor (20) is fixedly connected inside the guide box (7); a conductive spring (21) is fixedly connected to the lower side of the movable seat (8), and the conductive spring (21) is in contact with the strip resistor (20).

5. The vehicle bumper inspection tool according to claim 4, characterized in that: A suction cup (29) is fixedly connected to the side of the pressing block (27) away from the sleeve (22).

6. The vehicle bumper inspection tool according to claim 5, characterized in that: An annular elastic member (30) is fixedly connected between the side of the slider (23) close to the pressure block (27) and the sleeve (22), and the elastic member (30) is designed to be a hollow structure; the elastic member (30) is connected to the inner side of the suction cup (29) through a conduit (31).

7. The vehicle bumper inspection tool according to claim 6, characterized in that: A drainage piece (32) is fixedly connected to the inner side of the suction cup (29) at a position corresponding to the conduit (31); a gap exists between the drainage piece (32) and the inner side of the suction cup (29).

8. A vehicle bumper inspection method, the method using the vehicle bumper inspection tool of claim 7, characterized in that: The following steps are involved: S1: Place the bumper (2) on the surface of the test platform (1) so that the concave surface of the bumper (2) abuts against the side of the support block (14) of the platform (3), and both ends of the bumper (2) are located between the support block (14) and the limit plate (15); S2: Slide the slide (5) to adjust its position inside the slide groove (4) so ​​that the guide box (7) can be aligned with the bumper (2) at different angles. The adjustment rod (18) is driven to rotate by the hand wheel (19) to control the friction block (16) to squeeze and fit with the side wall of the slide groove (4). The friction force is used to limit the slide (5) to achieve the fixation of the multi-angle simulation component. S3: The driving rod (9) is controlled to rotate by the motor (10), driving the movable seat (8) to slowly approach the bumper (2), and then the contact member (12) is attached to the surface of the bumper (2). As the movable seat (8) is continuously fed, the load data on the bumper (2) is measured by the load sensor (13).

9. The vehicle bumper detection method according to claim 8, characterized in that: The method further comprises the following steps: S4: By connecting the strip resistor (20) and the conductive spring (21) to the measuring circuit and the data processing module, the resistance value and length of the strip resistor (20) connected to the measuring circuit continuously change during the feeding process of the movable seat (8); S5: By recording the resistance value and length of the strip resistor (20) connected to the circuit at different time nodes, the data processing module is used to calculate the length difference before and after, that is, the deformation amount of the bumper (2) is obtained to understand the deformation of the bumper (2).

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