Detection device and detection method for automobile exterior trimming part assembly

Abstract

The invention relates to the technical field of insertion and extraction force testing, and discloses a detection device and method for automobile exterior trimming part assembling, and the device comprises a bottom frame, a tension testing assembly, a vibration mechanism, and an extrusion mechanism, the vibration mechanism comprises a gear-missing column, a moving plate, a first electric push rod, a placing plate, and a vibration spring, and the bottom frame is provided with a sliding groove. The moving plate is slidably connected into the sliding groove, the first electric push rod is fixedly installed in the sliding groove, the output end of the first electric push rod is fixedly connected with the side wall of one end of the moving plate, one end of the vibration spring is fixedly connected to the bottom frame, the placing plate is fixedly connected to the other end of the vibration spring, and a mounting block is arranged on the bottom frame. According to the device, the vibration mechanism and the extrusion mechanism are matched, so that the bumper support on the placement plate continuously shakes, various road surface vibrations borne by an automobile in the driving process are simulated, and the reliability of the buckle under long-term vibration is accurately evaluated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plug-in force testing, and in particular to a detection device and method for assembling automobile exterior parts. BACKGROUND

[0002] The bumper bracket is used for mounting and fixing the automobile bumper, and the firmness of the cooperation between the bumper bracket and the bumper affects the use performance of the automobile parts. If the plug-in force of the bumper bracket and the bumper is unreasonable, it will cause problems and defects such as deformation, damage, difficulty in installation, loosening, etc. during installation of the bumper.

[0003] Chinese patent CN216207170U discloses a novel automobile bumper bracket buckle plug-in force testing device. The bumper test piece connected with the push-pull force meter push rod is vertically downward, the bumper test piece is inserted between the buckle and the imitation sheet metal panel, then the force value at this time is read, which is the insertion force of the buckle. Then the push rod and the clamp are separated, the pull rod and the clamp are connected, then the bumper test piece is vertically pulled out between the buckle and the imitation sheet metal panel, then the force value at this time is read, which is the pull-out force of the buckle. During the test, the push-pull force meter is reset to zero every time the bumper test piece is inserted or pulled out, solving the problem that the existing plug-in force test needs to cut each buckle separately for testing, which damages the integrity of the parts and cannot simulate the actual vehicle.

[0004] Although the bumper bracket is fixed on the connecting bottom panel and the buckle is abutted on the imitation sheet metal side panel in the prior art, the state of the bumper bracket installed on the actual vehicle is reproduced. However, in the actual use of the vehicle, due to the bumping of the road surface and the impact on the bumper bracket, additional impact force and impact force will be generated on the bumper bracket buckle. Only the bumper bracket not subjected to external force is tested for plug-in force, which cannot effectively evaluate the performance of the bumper bracket buckle.

[0005] Therefore, it is necessary to provide a detection device and method for assembling automobile exterior parts to solve the above technical problems. SUMMARY

[0006] The present application relates to the technical field of plug-in force testing, and in particular to a detection device and method for assembling automobile exterior parts.

[0007] The first aspect, to achieve the above object, the present application provides the following technical scheme: including the chassis, tension test component, vibration mechanism, extrusion mechanism, the vibration mechanism includes the gear column of missing teeth, moving plate, first electric push rod, placement plate and vibration spring, the chassis is opened with the slide groove, the moving plate is slidably connected in the slide groove, the first electric push rod is fixedly installed in the slide groove, and the output end of the first electric push rod is fixedly connected with the one end side wall of moving plate, one end of the vibration spring is fixedly connected on the chassis, the placement plate is fixedly connected on the other end of vibration spring, and the mounting block is further arranged on the chassis, and the mounting block is located on both sides of the slide groove, the gear column of missing teeth is rotatably connected between the mounting block;

[0008] Wherein, the placement plate is provided with a plurality of grooves, and a plurality of the grooves are engaged with the teeth on the gear column of missing teeth, the vibration spring is fixedly installed with a support column inside, the tension test component is used for measuring the tension of the buckle, and the extrusion mechanism is used for extruding the automobile exterior trim on the placement plate.

[0009] As a further scheme of the present application, the bottom surface of the placement plate is provided with an arc-shaped groove, and the gear column of missing teeth is further provided with an abutting block, the abutting block is in abutment with the inner wall of the arc-shaped groove, and the abutting block reciprocates along the inner wall of the arc-shaped groove.

[0010] As a further scheme of the present application, the tension test component includes a tension meter, a buckle, a second electric push rod, and a connecting assembly; the second electric push rod is fixedly installed on the top of the chassis, and the output end of the second electric push rod penetrates through the top of the chassis; the tension meter is installed on the output end of the second electric push rod through the connecting assembly; and the buckle is fixedly installed on the bottom of the tension meter.

[0011] As a further scheme of the present application, the connecting assembly includes a pull ring and a connecting buckle; one end of the pull ring is fixedly installed on the tension meter away from the buckle, and the other end of the pull ring is slidably connected with the connecting buckle; the connecting buckle is fixedly installed on the output end of the second electric push rod; wherein a plurality of protrusions are arranged on the contact end of the pull ring and the connecting buckle, and a plurality of grooves are arranged on the bottom of the connecting buckle.

[0012] As a further scheme of the present application, the extrusion mechanism includes a third electric push rod, an extrusion sleeve, an inflatable shaft, a micro air pump, and a driving assembly; the third electric push rod is slidably connected to the top of the chassis through the driving assembly, and a mounting bracket is fixedly arranged on the output end of the third electric push rod; the extrusion sleeve is rotatably connected to the mounting bracket; the inflatable shaft is fixedly installed inside the extrusion sleeve; the micro air pump is fixedly connected outside the mounting bracket, and the air outlet of the micro air pump is connected with the air inlet of the inflatable shaft.

[0013] As a further scheme of the present application, the air expansion shaft is uniformly fixed with a plurality of adjusting blocks, and a plurality of through grooves are uniformly arranged on the outer periphery of the extrusion sleeve, and the size and position of the plurality of through grooves correspond to those of the plurality of adjusting blocks.

[0014] As a further scheme of the present application, the driving assembly comprises an electric guide rail and a sliding block; the electric guide rail is fixedly installed on the top of the chassis; the sliding block is slidably connected to the electric guide rail, and the third electric push rod is fixedly connected to the sliding block.

[0015] The second electric push rod is arranged to push the test sheet on the tensile tester close to the buckle on the bumper bracket and fix it in the buckle, and then the test sheet is pulled out to detect the plug-in force of the buckle. Further, during the detection, the bumper bracket on the placement plate is constantly shaken by the vibration mechanism to simulate various road vibrations during driving of the automobile, so that the reliability of the buckle under long-term vibration can be more accurately evaluated, and potential defects that may not be revealed in static testing are found. The extrusion mechanism is further arranged to extrude the bumper bracket on the placement plate after being impacted, and the impact and extrusion are applied to different positions of the bumper bracket to observe whether the plug-in force of the buckle changes significantly under deformation of the bracket, whether the buckle can still be effectively fixed, and whether the buckle will be damaged, so that the performance and reliability of the buckle are more comprehensively evaluated, and the test result is more reliable and accurate. The air expansion shaft and the plurality of adjusting blocks fixedly installed on the surface of the air expansion shaft are further arranged, the adjusting blocks are expanded by inflating the air expansion shaft, and the adjusting blocks are fully abutted with the surface of the bumper to ensure that the extrusion sleeve is extruded at the same degree on each position of the bumper bracket during rolling on the bumper bracket, so that the test result is more reliable and accurate.

[0016] In a second aspect, the present application provides a detection method for assembling an automobile exterior part, which comprises the following steps:

[0017] S1: first, the bumper bracket to be detected is fixed on the placement plate through threaded connection, and then the second electric push rod is started to drive the tensile tester close to the bumper bracket to be detected, and when the bumper bracket is moved to a suitable distance, the second electric push rod is stopped, and at this time, the test sheet is inserted into the corresponding buckle on the bumper bracket;

[0018] S2: after the automobile exterior part is fixed, the second electric push rod is started again to move in the opposite direction, so that the test sheet and the connection part of the bumper bracket are constantly pulled, and then the value on the tensile tester is used to evaluate the plug-in force of the buckle under the condition that the bumper bracket is not subjected to external force;

[0019] S3: under the premise of starting the second electric push rod, start the first electric push rod, make the bumper support vibration mechanism on the placing plate constantly vibrate under the action, and then evaluate the plug-in force of the buckle on the bumper support under the condition of constant vibration through the value on the tension meter;

[0020] S4: under the premise of starting the second electric push rod, start the third electric push rod, start the micro air pump at the same time, make the micro air pump inflate the inside of the air inflation shaft, make the adjusting block located outside the extrusion sleeve, then make the third electric push rod quickly drive the extrusion sleeve to fall towards the surface of the bumper support and generate impact, and then evaluate the plug-in force of the buckle on the bumper support under the condition of impact through the value on the tension meter;

[0021] S5: under the premise of starting the second electric push rod, start the electric guide rail, make the sliding block roll on the surface of the bumper support with the extrusion sleeve and extrude the bumper support, and then evaluate the plug-in force of the buckle on the bumper support under the condition of being extruded at different positions through the value on the tension meter.

[0022] S6: start the first electric push rod, the second electric push rod, the third electric push rod and the electric guide rail, and then evaluate the plug-in force of the buckle on the bumper support under the condition of being extruded, impacted and vibrated through the value on the tension meter. BRIEF DESCRIPTION OF DRAWINGS

[0023] The application will be further described below in combination with the drawings and examples.

[0024] Figure 1 is a schematic diagram of the overall structure of the application;

[0025] Figure 2 is a schematic diagram of the vibration mechanism structure of the application;

[0026] Figure 3 is Figure 2 is an enlarged view of part A in the figure;

[0027] Figure 4 is a schematic diagram of the tension test assembly structure of the application;

[0028] Figure 5 is Figure 4 is an enlarged view of part B in the figure;

[0029] Figure 6 is a schematic diagram of the missing gear column installation structure of the application;

[0030] Figure 7 is a schematic diagram of the missing gear column structure of the application;

[0031] Figure 8 is a schematic diagram of the extrusion mechanism installation structure of the application;

[0032] Figure 9 This is a schematic diagram of the extrusion mechanism of the present invention;

[0033] Figure 10 This is a schematic diagram of the internal structure of the extrusion sleeve of the present invention;

[0034] In the diagram: 1. Base frame; 2. Extrusion mechanism; 21. Air shaft; 22. Adjusting block; 23. Extrusion sleeve; 3. Through groove; 4. Tensile test assembly; 41. Tensile gauge; 42. Test piece; 43. Second electric push rod; 44. Connecting assembly; 441. Pull ring; 442. Connecting buckle; 51. Third electric push rod; 54. Miniature air pump; 55. Drive assembly; 551. Electric guide rail; 552. Sliding block; 6. Slide groove; 7. Mounting block; 8. Groove; 9. Support column; 10. Arc groove; 11. Abutment block; 12. Protrusion; 13. Strip groove; 14. Mounting bracket; 15. Bumper bracket; 16. Buckle; 17. Vibration mechanism; 171. Gear-deficient column; 172. Moving plate; 173. First electric push rod; 174. Placement plate; 175. Vibration spring. Detailed Implementation Example 1

[0035] like Figures 1-5 As shown, the vibration mechanism 17 includes a gearless column 171, a movable plate 172, a first electric actuator 173, a placement plate 174, and a vibration spring 175. A sliding groove 6 is provided on the base frame 1. The movable plate 172 is slidably connected in the sliding groove 6. The first electric actuator 173 is fixedly installed in the sliding groove 6, and the output end of the first electric actuator 173 is fixedly connected to one side wall of the movable plate 172. One end of the vibration spring 175 is fixedly connected to the base frame 1, and the placement plate 174 is fixedly connected to the other end of the vibration spring 175. The base frame 1 is also provided with mounting blocks 7, and the mounting blocks 7 are located on both sides of the sliding groove 6. The gearless column 171 is rotatably connected between the mounting blocks 7.

[0036] The placement plate 174 has multiple grooves 8, and the multiple grooves 8 mesh with the teeth on the gear post 171. The vibration spring 175 has a support post 9 fixedly installed inside it.

[0037] like Figure 4 As shown, the tensile testing assembly 4 includes a tensile gauge 41, a test piece 42, a second electric actuator 43, and a connecting assembly 44; the second electric actuator 43 is fixedly installed on the top of the base frame 1, and the output end of the second electric actuator 43 is disposed through the top of the base frame 1; the tensile gauge 41 is installed on the output end of the second electric actuator 43 through the connecting assembly 44;

[0038] The test piece 42 is fixedly installed at the bottom of the tension gauge 41.

[0039] In use, first, the bumper bracket 15 to be detected is fixed by threaded connection on the placement plate 174, then the second electric push rod 43 is started, the output end of the second electric push rod 43 drives the tensile meter 41 to approach the bumper bracket 15 to be detected, when moving to a suitable distance, the second electric push rod 43 is stopped, at this time the test sheet 42 is inserted into the corresponding buckle 16 on the bumper bracket 15, the second electric push rod 43 is started again, the second electric push rod 43 moves in the opposite direction, the test sheet 42 and the connection part of the bumper bracket 15 are continuously subjected to the pulling force, at the same time the first electric push rod 173 is started, the first electric push rod 173 drives the moving plate 172 to reciprocate in the sliding groove 6, then the recess 8 on the placement plate 174 and the tooth on the missing tooth gear column 171 are engaged, the missing tooth gear column 171 reciprocates with the moving plate 172, at this time the abutting block 11 on the missing tooth gear column 171 continuously pushes the bottom of the placement plate 174, at the same time the vibration spring 175 is matched, the bumper bracket 15 on the placement plate 174 is continuously subjected to the vibration, then the value on the tensile meter 41 is used to evaluate the insertion and pulling force of the buckle 16 under the condition of continuous vibration of the bumper bracket 15.

[0040] The effect of such arrangement is that the bumper bracket 15 on the placement plate 174 is continuously subjected to the shaking, the various road vibrations in the driving process of the automobile are simulated, the reliability of the buckle 16 under long-term vibration is more accurately evaluated, and some potential defects that may not appear in the static test are found.

[0041] Optionally, the connecting assembly 44 comprises a pull ring 441 and a connecting buckle 442; one end of the pull ring 441 is fixedly installed on the tensile meter 41 away from the buckle 16, the other end of the pull ring 441 is slidably connected with the connecting buckle 442; the connecting buckle 442 is fixedly installed on the output end of the second electric push rod 43; wherein a plurality of protrusions 12 are arranged on the contact end of the pull ring 441 and the connecting buckle 442, a plurality of strip-shaped grooves 13 are arranged on the bottom of the connecting buckle 442.

[0042] The effect of such arrangement is that the contact end of the pull ring 441 and the connecting buckle 442 can change, the pulling direction of the second electric push rod 43 to the buckle 16 is changed, the insertion and pulling force of the buckle 16 when subjected to the force generated in different directions is detected, and at the same time the vibration is generated by the strip-shaped groove 13 and the protrusion 12 in the moving process, so that the vibration amplitude of the bumper bracket 15 is further improved. Embodiment two

[0043] On the basis of embodiment one, as Figure 8 and Figure 10As shown, the extrusion mechanism 2 comprises a third electric push rod 51, an extrusion sleeve 23, an air inflation shaft 21, a micro air pump 54 and a driving assembly 55; the third electric push rod 51 is slidingly connected on the top of the chassis 1 through the driving assembly 55, and an installation bracket 14 is fixedly arranged on the output end of the third electric push rod 51; the extrusion sleeve 23 is rotationally connected on the installation bracket 14; the air inflation shaft 21 is fixedly installed inside the extrusion sleeve 23; the micro air pump 54 is fixedly connected outside the installation bracket 14, and the air outlet of the micro air pump 54 is connected with the air inlet of the air inflation shaft 21.

[0044] As shown in Figure 1 With Figure 8 As shown, the driving assembly 55 comprises an electric guide rail 551 and a sliding block 552; the electric guide rail 551 is fixedly installed on the top of the chassis 1; the sliding block 552 is slidingly connected on the electric guide rail 551, and the third electric push rod 51 is fixedly connected on the sliding block 552

[0045] In use, under the premise of starting the second electric push rod 43, the third electric push rod 51 is started, then the third electric push rod 51 quickly drives the extrusion sleeve 23 to fall on the surface of the bumper bracket 15 and generate an impact, and the electric guide rail 551 is started to drive the extrusion sleeve 23 to fall on different positions of the surface of the bumper bracket 15 and generate an impact through the sliding block 552.

[0046] The effect of such arrangement is that by applying impact and extrusion on different positions of the bumper bracket 15, whether the plug-in force of the buckle 16 changes significantly under the deformation of the bracket, whether it can still be effectively fixed, and whether it will be damaged, so as to more comprehensively evaluate the performance and reliability of the buckle 16, and make the test result more reliable and accurate.

[0047] As shown in Figure 9 Optionally, a plurality of adjusting blocks 22 are uniformly fixedly installed on the surface of the air inflation shaft 21, and a plurality of through grooves 3 are uniformly formed on the outer periphery of the extrusion sleeve 23, and the size and position of the plurality of adjusting blocks 22 correspond to the size and position of the plurality of through grooves 3.

[0048] In use, under the premise of starting the second electric push rod 43, the electric guide rail 551 is started to drive the sliding block 552 to roll the extrusion sleeve 23 on the surface of the bumper bracket 15, and the micro air pump 54 is inflated to the inside of the air inflation shaft 21 to make the adjusting blocks 22 located outside the extrusion sleeve 23.

[0049] The effect of such an arrangement is that the air inflation shaft 21 and the plurality of adjusting blocks 22 uniformly fixed and installed on the surface of the air inflation shaft 21 are arranged, the adjusting blocks 22 are expanded towards the bumper surface by inflating the air inside the air inflation shaft 21, and the adjusting blocks 22 are fully abutted with the bumper surface, so as to ensure that the extrusion sleeve 23 is extruded at the same degree at each position of the bumper bracket 15 during rolling on the bumper bracket 15, thereby further making the test result more reliable and accurate. Example three

[0050] The embodiment of the application also provides a detection device and method for assembling an automobile exterior part, and a detection method for assembling an automobile exterior part includes the following steps:

[0051] S1: first, the bumper bracket 15 to be detected is fixed by thread connection and fixed on the placement plate 174, then the second electric push rod 43 is started, the output end of the second electric push rod 43 drives the tension meter 41 to approach the bumper bracket 15 to be detected, when moving to a suitable distance, the second electric push rod 43 is stopped, and at this time, the test piece 42 is inserted into the corresponding buckle 16 on the bumper bracket 15;

[0052] S2: after the bumper bracket 15 is fixed, the second electric push rod 43 is started again, the second electric push rod 43 moves in the opposite direction, the test piece 42 and the connection part of the bumper bracket 15 constantly generate tension, then the value on the tension meter 41 is used to evaluate the plug-in force of the buckle 16 under the condition that the bumper bracket 15 is not subjected to external force;

[0053] S3: under the premise of starting the second electric push rod 43, the first electric push rod 173 is started, the bumper bracket 15 on the placement plate 174 constantly generates vibration under the action of the vibration mechanism 17, then the value on the tension meter 41 is used to evaluate the plug-in force of the buckle 16 under the condition that the bumper bracket 15 is subjected to constant vibration;

[0054] S4: under the premise of starting the second electric push rod 43, the third electric push rod 51 is started, and the miniature air pump 54 is started at the same time, the miniature air pump 54 inflates the air inside the air inflation shaft 21, the adjusting block 22 is located outside the extrusion sleeve 23, then the third electric push rod 51 quickly drives the extrusion sleeve 23 to fall towards the surface of the bumper bracket 15 and generate impact, then the value on the tension meter 41 is used to evaluate the plug-in force of the buckle 16 under the condition that the bumper bracket 15 is subjected to impact;

[0055] S5: under the premise of starting the second electric push rod 43, the electric guide rail 551 is started, the sliding block 552 takes the extrusion sleeve 23 to roll on the surface of the bumper bracket 15 and extrude the bumper bracket 15, then the value on the tension meter 41 is used to evaluate the plug-in force of the buckle 16 under the condition that the bumper bracket 15 is extruded at different positions.

[0056] S6: Start the first electric push rod 173, the second electric push rod 43, the third electric push rod 51 and the electric guide rail 551, and then evaluate the plug-in force of the buckle 16 under the extrusion, impact, vibration of the bumper support 15 through the value on the tension meter 41.

[0057] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A testing device and method for assembling automotive exterior parts, characterized in that: Including the chassis (1), the tension test subassembly (4), the vibration mechanism (17), the extrusion mechanism (2); The vibration mechanism (17) includes a gear column (171), a moving plate (172), a first electric push rod (173), a placement plate (174) and a vibration spring (175), a chute (6) is formed in the chassis (1), the moving plate (172) is slidably connected in the chute (6), the first electric push rod (173) is fixedly installed in the chute (6), and one end of the first electric push rod (173) is fixedly connected with the side wall of one end of the moving plate (172), one end of the vibration spring (175) is fixedly connected on the chassis (1), the placement plate (174) is fixedly connected on the other end of the vibration spring (175), and the mounting block (7) is further arranged on the chassis (1), and the mounting block (7) is located on both sides of the chute (6), and the gear column (171) is rotatably connected between the mounting blocks (7); The placement plate (174) is provided with a plurality of recesses (8), and the plurality of recesses (8) are engaged with the teeth on the gear column (171), and the vibration spring (175) is fixedly installed with a support column (9) therein. The tension test subassembly (4) is used for measuring the tension borne by the buckle (16). The extrusion mechanism (2) is used for extruding the automobile exterior trim on the placement plate (174).

2. The detection device and detection method for assembling an automobile exterior member according to claim 1, characterized by: The bottom surface of the placement plate (174) is provided with an arc-shaped groove (10), the gear column (171) is further provided with an abutting block (11), the abutting block (11) abuts against the inner wall of the arc-shaped groove (10), and the abutting block (11) reciprocates along the inner wall of the arc-shaped groove (10).

3. The detection device and detection method for assembling an automobile exterior member according to claim 1, characterized by comprising: The tension test subassembly (4) includes a tension meter (41), a test piece (42), a second electric push rod (43) and a connecting assembly (44). The second electric push rod (43) is fixedly installed on the top of the chassis (1), and the output end of the second electric push rod (43) penetrates through the top of the chassis (1). The tension meter (41) is installed on the output end of the second electric push rod (43) through the connecting assembly (44). The test piece (42) is fixedly installed on the bottom of the tension meter (41).

4. The detection device and detection method for assembling an automobile exterior member according to claim 3, characterized in that: The connecting assembly (44) includes a pull ring (441) and a connecting buckle (442). One end of the pull ring (441) is fixedly installed on the tension meter (41) away from the buckle (16), and the other end of the pull ring (441) is slidably connected with the connecting buckle (442). The connecting buckle (442) is fixedly installed on the output end of the second electric push rod (43). A plurality of protrusions (12) are arranged on the contact end of the pull ring (441) and the connecting buckle (442), and a plurality of strip-shaped grooves (13) are formed in the bottom of the connecting buckle (442).

5. The detection device and detection method for assembling an automobile exterior member according to claim 1, characterized by comprising: The extrusion mechanism (2) includes a third electric push rod (51), an extrusion sleeve (23), an air inflation shaft (21), a micro air pump (54) and a driving assembly (55). The third electric push rod (51) is slidably connected to the top of the chassis (1) through a driving assembly (55), and an installation bracket (14) is fixedly arranged on the output end of the third electric push rod (51); The extrusion sleeve (23) is rotatably connected to the installation bracket (14); The air inflation shaft (21) is fixedly installed inside the extrusion sleeve (23); The miniature air pump (54) is fixedly connected outside the installation bracket (14), and the air outlet of the miniature air pump (54) is connected with the air inlet of the air inflation shaft (21).

6. The detection device and detection method for assembling an automobile exterior member according to claim 5, characterized in that: A plurality of adjusting blocks (22) are fixedly installed on the surface of the air inflation shaft (21), and a plurality of through grooves (3) are uniformly arranged on the outer periphery of the extrusion sleeve (23), and the size and position of the plurality of adjusting blocks (22) correspond to the size and position of the plurality of through grooves (3).

7. The detection device and detection method for assembling an automobile exterior member according to claim 5, characterized by comprising: The driving assembly (55) comprises an electric guide rail (551) and a sliding block (552); The electric guide rail (551) is fixedly installed on the top of the chassis (1); The sliding block (552) is slidably connected to the electric guide rail (551), and the third electric push rod (51) is fixedly connected to the sliding block (552).

8. A method of inspecting an assembly of an automobile exterior member according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: S1: first, the bumper bracket (15) to be detected is fixedly connected to the placement plate (174) through threaded connection, then the second electric push rod (43) is started, the output end of the second electric push rod (43) drives the tension gauge (41) to move close to the bumper bracket (15) to be detected, when the bumper bracket (15) to be detected is moved to a proper distance, the second electric push rod (43) is stopped, at this time, the test piece (42) is inserted into the corresponding buckle (16) on the bumper bracket (15); S2: after the bumper bracket (15) is fixed, the second electric push rod (43) is started again, the second electric push rod (43) moves in the opposite direction, the test piece (42) and the connection part of the bumper bracket (15) are continuously subjected to tension, then the value on the tension gauge (41) is used to evaluate the insertion and extraction force of the buckle (16) under the condition that the bumper bracket (15) is not subjected to external force; S3: under the premise that the second electric push rod (43) is started, the first electric push rod (173) is started, the bumper bracket (15) on the placement plate (174) is continuously subjected to vibration under the action of the vibration mechanism (17), then the value on the tension gauge (41) is used to evaluate the insertion and extraction force of the buckle (16) under the condition that the bumper bracket (15) is continuously subjected to vibration; S4: under the premise that the second electric push rod (43) is started, the third electric push rod (51) is started, and the miniature air pump (54) is started at the same time, the miniature air pump (54) inflates the air inflation shaft (21), the adjusting blocks (22) are located outside the extrusion sleeve (23), then the third electric push rod (51) quickly drives the extrusion sleeve (23) to fall on the surface of the bumper bracket (15) and generate impact, then the value on the tension gauge (41) is used to evaluate the insertion and extraction force of the buckle (16) under the condition that the bumper bracket (15) is subjected to impact; S5: under the premise of starting the second electric push rod (43), start the electric guide rail (551), make the sliding block (552) roll on the surface of the bumper bracket (15) with the extrusion sleeve (23), and extrude the bumper bracket (15), then evaluate the plug-in force of the buckle (16) under the extrusion of the bumper bracket (15) in different positions through the value on the tension gauge (41). S6: start the first electric push rod (173), the second electric push rod (43), the third electric push rod (51), and the electric guide rail (551), then evaluate the plug-in force of the buckle (16) under the extrusion, impact, and vibration of the bumper bracket (15) through the value on the tension gauge (41).

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