Vehicle bumper detection tool and detection method

Abstract

The invention belongs to the technical field of bumper detection, and particularly relates to a vehicle bumper detection tool and method, and the vehicle bumper detection tool comprises a detection table and a multi-angle simulation assembly. The multi-angle simulation assembly comprises a sliding seat; the upper side of the sliding seat is fixedly connected with a guide box through a supporting column; a movable seat is slidably connected into the guide box; the interior of the guide box is rotationally connected with a driving rod; the driving rod penetrates through the interior of the movable seat and is connected with the movable seat through a screw-nut pair; the surface of the movable seat is fixedly connected with a connecting rod; the end part of the connecting rod is fixedly connected with a contact piece; and a load sensor is arranged between the connecting rod and the movable seat. By adjusting the position of the multi-angle simulation assembly, the direction of the load borne by the bumper in the impact test is changed, so that the front face and the side face of the bumper can be subjected to loading test at all angles, the collision situation of a vehicle in the actual driving process is fully simulated, and the anti-collision performance of the bumper is truly reflected.

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] The bumper is a protective device on the outside of the car, mainly installed at the front and rear of the car body, used to absorb the impact force generated during a collision to reduce damage to the vehicle and passengers, and protect other key components of the vehicle from impact damage. The bumper plays an important safety role in collision accidents and is an indispensable part of modern car design, so its testing is particularly important. Before the bumper leaves the factory, it is usually necessary to simulate a collision accident, impact and squeeze the bumper to fully test its various performances.

[0003] A Chinese patent application CN213336705U discloses an impact test device for automobile bumper processing. The technical solution is as follows: it includes a body, a pressure regulator, a shockproof spring, an infrared heating layer and a clamp. A base is installed at the bottom of the body, and a telescopic rod is installed at the inner bottom of the base, and a limit block is installed at the top of the telescopic rod. A moving rod is installed inside the limit block, and a clamp is installed at one end of the moving rod, and an extrusion block is installed above the clamp. A test bench is installed on the top of the base, and a shockproof spring is installed above the test bench. The impact test device for automobile bumper processing is provided with a pressure regulator and a shockproof spring. When in use, the setting of the pressure regulator facilitates people to control the force of the impact block pressing down, and can also understand that the bumper will produce different deformations when subjected to different forces, which increases people's cognition. The setting of the shockproof spring increases the stability of the test bench and also increases the practicality of the body.

[0004] However, the above technology often has 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 the frontal impact of the bumper. However, during the actual driving of the vehicle, the direction of the impact on the bumper is complicated 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 is difficult to accurately reflect the actual performance of the bumper during the 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: a vehicle bumper detection tooling described in the present invention comprises a detection 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 support 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; a guide box is fixedly connected to the upper side of the slide seat 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 arranged 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 arranged between the multi-angle simulation component and the slide slot; the fixing component is used to fix the slide seat inside the slide slot; the fixing component includes a friction block and a connecting plate which are respectively slidably connected to the slide seat 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; a handwheel is fixedly connected to the end of the adjusting rod.

[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 fits 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; one 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 sliding block 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 sheet 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 sheet and the inner side of the suction cup.

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

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

[0019] S2: Slide the slide to adjust its position inside the slide slot, so that the guide box can be aligned with the bumper at different angles. The hand wheel drives the adjustment rod to rotate, and the friction block is controlled to squeeze and fit with the side wall of the slide slot. The friction force is used to limit the slide, so as to achieve the fixation of the multi-angle 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 surface of the bumper. As the movable seat is continuously fed, the load data on the bumper is measured by the load sensor;

[0021] S4: By connecting the bar resistor and the conductive spring to the measuring circuit and the data processing module, the resistance value and length of the bar resistor connected to the measuring circuit are continuously changed 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 is used to calculate 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 inspection tool and inspection method described in the present invention adjusts the position of the multi-angle simulation component to change the load direction of the bumper in the impact test, so that the front and side angles of the bumper can be loaded and tested, and the bumper's collapse and deformation process is restored, thereby fully simulating the collision of the vehicle during actual driving to truly reflect the bumper's anti-collision performance.

[0025] 2. The vehicle bumper inspection tool and inspection method described in the present invention, by setting a supporting block and a limiting plate, place the bumper on the side of the supporting block during inspection, and make the two ends of the bumper located between the supporting block and the limiting 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 condition. 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 run off.

[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 the bar resistor and the conductive spring sheet to slide with each other and connecting the corresponding measurement circuit and data processing module. The specific process is as follows: during the feeding of the movable seat, the resistance value and length of the bar resistor connected to the measurement circuit are constantly changing. 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 bar resistor. As the subsequent movable seat continues to feed, the bar resistor corresponds to another resistance value and length in real time. The length difference between the two time nodes is calculated using the data processing module 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 in conjunction with the accompanying drawings.

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

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

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

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

[0032] Figure 5 It is a schematic diagram of the structure 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 diagram of the structure 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 table 3, slide groove 4, slide seat 5, support column 6, guide box 7, movable seat 8, drive rod 9, motor 10, connecting rod 11, contact piece 12, load sensor 13, supporting block 14, limit plate 15, friction block 16, connecting plate 17, adjusting rod 18, hand wheel 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 easy to understand, the present invention is further explained 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 comprises a inspection platform 1 and a multi-angle simulation component;

[0039] The surface of the test bench 1 is used to place the bumper 2; a support platform 3 is fixedly connected to the upper side of the test bench 1; a slide groove 4 is provided on the surface of the test bench 1, and the slide groove 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 seat 5 slidably connected to the inside of the slide slot 4; the upper side of the slide seat 5 is fixedly connected to a guide box 7 through a support column 6, and the guide box 7 remains vertical to the slide slot 4; a movable seat 8 is slidably connected to the inside of the guide box 7; a drive rod 9 is rotatably connected to the inside of the guide box 7, 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; a connecting rod 11 is fixedly connected to the surface of the movable seat 8; a contact piece 12 is fixedly connected to the end of the connecting rod 11; 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 the frontal impact of the bumper 2. However, during the actual driving of the vehicle, the impact direction of the bumper 2 is complicated and is often not as simple as a frontal impact. 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 abuts against the side of the platform 3, and then slides the slide seat 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 through 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 is continuously fed, 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 detects the load size of the bumper 2 through the load sensor 13, and the specific methods can be divided into three types: the first is to apply the rated load to observe the deformation degree of the bumper 2; the second is to observe the load size after the bumper 2 reaches the rated deformation degree; the third is to continuously feed the movable seat 8 to gradually increase the applied load until the bumper 2 reaches the limit deformation degree and collapses, and observe the load size at this time. The tester can choose to perform one or more of the above three methods to test the strength, toughness, elasticity and other properties of the bumper 2.

[0044] The present invention changes the load direction of the bumper 2 in the impact test by adjusting the position of the multi-angle simulation component, so that the front and side angles of the bumper 2 can be loaded and tested, and the collapse and deformation process of the bumper 2 can be restored, thereby fully simulating the collision situation of the vehicle during actual driving and truly reflecting the anti-collision performance of the bumper 2.

[0045] 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, which is compatible with the shape of the bumper 2. By setting the supporting block 14 and the limiting plates 15, the bumper 2 is placed on the side of the supporting block 14 during the test, and the two ends of the bumper 2 are located between the supporting block 14 and the limiting plates 15. On the one hand, the supporting block 14 is used to further simulate the front or rear of the vehicle and restore the real collision conditions. On the other hand, the bumper 2 is limited and fixed to prevent the contact member 12 from pressing against the surface of the bumper 2 during the test, which may 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 slide 4; the fixing assembly is used to fix the slide 5 inside the slide 4; the fixing assembly includes 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. After adjusting the position of the multi-angle simulation assembly, the adjusting rod 18 is driven to rotate by the hand wheel 19 to control the connecting plate 17 and the friction block 16 to move inside the support column 6 and the slide 5 respectively, so that the friction block 16 protrudes from the surface of the slide 5 and is pressed and fitted with the side wall of the slide 4, and the slide 5 is limited by friction force to prevent it from sliding sideways, thereby realizing the position fixation of the multi-angle simulation assembly and preventing the multi-angle simulation assembly from shaking or offsetting during the test.

[0047] As a preferred embodiment of the present invention, a bar 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 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 are constantly changing. 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 the tester 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; a pressure block 27 is fixedly connected to one end of the guide rod 26 extending outside the sleeve 22, 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 arranging 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 squeezing 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 pressing block 27 away from the sleeve 22. By arranging the suction cup 29 to be adsorbed on the surface of the bumper 2, the fixing effect between the pressing block 27 and the bumper 2 can be improved, and the problem of the contact member 12 sliding on the surface of the bumper 2 can be further prevented.

[0050] 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. As the contact member 12 is in contact with the bumper 2, the pressure block 27 drives the slider 23 to move inside the sleeve 22, and the slider 23 stretches and expands the elastic member 30, and then uses the conduit 31 to suck the air inside the suction cup 29 into the elastic member 30, so as to fully exhaust the air between the suction cup 29 and the bumper 2, thereby improving the suction efficiency of the suction cup 29. In addition, when the movable seat 8 moves away from the bumper 2, the spring 1 24 pushes the slider 23 to reset, and at this time, the slider 23 squeezes the elastic member 30, and squeezes the air inside the elastic member 30 into the space between the suction cup 29 and the bumper 2 through the conduit 31, destroying the negative pressure environment inside the suction cup 29, so that the suction cup 29 can be quickly separated 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; there is a gap between the drainage piece 32 and the inner side of the suction cup 29. By providing the drainage piece 32, when the air inside the elastic member 30 is squeezed into the suction cup 29 through the conduit 31, the airflow can be blown toward the inner wall of the suction cup 29 along the drainage piece 32, thereby removing dust and other dirt adhering to the inner side of the suction cup 29, achieving a self-cleaning effect of the suction cup 29, and preventing dirt from affecting the adsorption effect between it and the bumper 2.

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

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

[0054] 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, and 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, and the slide 5 is limited by the friction force to achieve the fixation of the multi-angle simulation component;

[0055] S3: The driving rod 9 is controlled to rotate by the motor 10, 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 is continuously fed, the load data of the bumper 2 is measured by the load sensor 13;

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

[0057] S5: By recording the resistance value and length of the bar 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.

[0058] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 should not be understood as limiting the scope of protection of the present invention.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle bumper inspection tool, characterized in that: It comprises a testing platform (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 seat (5) slidably connected to the inside of a slide groove (4); the upper side of the slide seat (5) is fixedly connected to a guide box (7) through a support column (6), and the guide box (7) is kept vertical to the slide groove (4); the guide box (7) is slidably connected to a movable seat (8); the guide box (7) is rotatably connected to a drive rod (9) inside, 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; a connecting rod (11) is fixedly connected to the surface of the movable seat (8); a contact piece (12) is fixedly connected to the end of the connecting rod (11); a load sensor (13) is arranged between the connecting rod (11) and the movable seat (8).

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 component is arranged between the multi-angle simulation component and the slide groove (4); the fixing component is used to fix the slide seat (5) inside the slide groove (4); the fixing component comprises a friction block (16) and a connecting plate (17) which are respectively slidably connected to the slide seat (5) and the inside of 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 the connecting plate (17) 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 sheet (21) is fixedly connected to the lower side of the movable seat (8), and the conductive spring sheet (21) is in contact with the strip resistor (20).

5. The vehicle bumper inspection tool according to claim 4, characterized in that: 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 arranged inside the slider (23); a guide rod (26) is fixedly connected to the surface of the ball head (25); a pressure block (27) is fixedly connected to one end of the guide rod (26) extending outside the sleeve (22), 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).

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

7. The vehicle bumper inspection tool according to claim 6, 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) via a conduit (31).

8. The vehicle bumper inspection tool according to claim 7, characterized in that: A drainage sheet (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 sheet (32) and the inner side of the suction cup (29).

9. A vehicle bumper inspection method, the method using the vehicle bumper inspection tool as claimed in claim 8, characterized in that: The following steps are involved: S1: placing the bumper (2) on the surface of the testing platform (1) so that the concave surface of the bumper (2) abuts against the side of the supporting block (14) of the platform (3), and the two ends of the bumper (2) are located between the supporting block (14) and the limiting plate (15); S2: The slide seat (5) is slid 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 be pressed and fitted with the side wall of the slide groove (4). The friction force is used to limit the slide seat (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), so that the contact piece (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).

10. A vehicle bumper detection method according to claim 9, characterized in that: The method further comprises the following steps: S4: by connecting the bar resistor (20) and the conductive spring (21) to the measuring circuit and the data processing module, during the feeding process of the movable seat (8), the resistance value and length of the bar resistor (20) connected to the measuring circuit are continuously changed; 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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