Strength detection device for automobile door protection plate and automobile grille

Abstract

The invention relates to the technical field of automobile grille detection, in particular to an automobile door guard plate and an automobile grille strength detection device.The automobile grille strength detection device comprises a fixing assembly, a detection assembly and a first impact assembly.The fixing assembly comprises a first bottom plate, a simulation frame is arranged on one side of the first bottom plate, and a grille assembly is arranged in the simulation frame; a fixing rod is arranged on one side of the middle net assembly, a fixing plate is fixedly connected to one side of the first bottom plate, a bolt fixing assembly is arranged between the fixing plate and the fixing rod, and the detection assembly is located on the upper side of the fixing assembly and matched with the middle net assembly. The first impact assembly comprises a second bottom plate, a base, a hydraulic pump, a second screw rod and a first impact piece, the hydraulic pump is arranged on the upper side surface of the base, the second screw rod is fixedly connected with one side of the hydraulic pump, the telescopic performance is achieved through cooperation, and the function that the detection effect is good is conveniently and efficiently achieved.

Description

Technical Field

[0001] This invention relates to the technical field of automotive grille testing, and more particularly to an automotive door panel and automotive grille strength testing device. Background Technology

[0002] As a core exterior component of the vehicle's front fascia, the car grille not only serves an aesthetic function but also needs to withstand long-term impacts from low-speed collisions, high-speed stone impacts, driving vibrations, and complex environments such as high and low temperatures and salt spray. Its structural strength directly affects driving safety and service life. Currently, the materials used for car grilles have shifted from traditional metals to lightweight plastics and composite materials. However, grilles with different materials and irregular shapes place higher demands on the accuracy and scenario adaptability of strength testing. Existing grille strength testing largely relies on general-purpose impact equipment, and the fixing methods are disconnected from actual vehicles. They often use simple bolt clamps or flat supports, which cannot reproduce the tilted installation posture of the grille on the vehicle frame, resulting in distortion of the force path during testing. For example, when simulating a frontal impact, excessive edge deformation is likely to occur, resulting in a significant deviation from the actual vehicle collision effect. Furthermore, the use of a single impact test cannot simulate the effects of impacts at different speeds, and the test results are not comprehensive enough.

[0003] In the existing patent publication number CN221350473U, a car bumper impact strength testing device is disclosed, including a testing seat. A support frame is fixedly installed on the top of the testing seat, and an electric hydraulic push rod is fixedly installed on the surface of the support frame. One end of the electric hydraulic push rod is fixedly connected to a connecting plate, and an impact head is fixedly installed at the bottom of the connecting plate. This device pushes a first impact component to perform impact testing on the car bumper by the electric push rod. However, the positions of the bumper and the first impact component cannot be adjusted, which greatly reduces the detection range and the collected data is not comprehensive enough.

[0004] Therefore, it is necessary to provide a strength testing device for automotive door panels and automotive grilles that can achieve good testing results. Summary of the Invention

[0005] The purpose of this invention is to provide a strength testing device for automotive door panels and automotive grilles to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vehicle door panel and vehicle grille strength testing device, comprising a fixing component, a testing component and a first impact component, wherein the fixing component includes a base plate, a simulated vehicle frame is provided on one side of the base plate, a grille component is provided inside the simulated vehicle frame, a fixing rod is provided on one side of the grille component, a fixing plate is fixedly connected to one side of the base plate, a bolt fixing component is provided between the fixing plate and the fixing rod, and the testing component is located on the upper side of the fixing component and is adapted to the grille component; The first impact assembly includes a second base plate, a base, a hydraulic pump, a second screw, and a first impact member. The hydraulic pump is disposed on the upper surface of the base. The second screw is fixedly connected to one side of the hydraulic pump to achieve telescopicity. A replaceable first impact member is threadedly connected to the surface of the second screw. A lifting assembly is disposed between the second base plate and the base. The lifting assembly includes a first motor. A first stud is disposed on one side of the first motor. A threaded cylinder is disposed on one side of the base. The first stud and the threaded cylinder are internally threadedly connected. A plurality of sliding rods are disposed on one side of the base. A plurality of guide plates are disposed on one side of the second base plate. The number of sliding rods and guide plates corresponds to the number of guide plates and they are internally slidably connected.

[0007] In one embodiment, the detection component includes a bracket, a guide plate is provided on one side of the bracket, a displacement sensor is slidably connected to the surface of the guide plate, a data box is provided on one side of the bracket, a transmission line is provided between the displacement sensor and the data box, and a pair of locking screws are provided on the surface of the displacement sensor.

[0008] In one embodiment, the guide plate, displacement sensor, and transmission line are arranged in a pair and symmetrically distributed, and the position of the displacement sensor is adapted to the position of the mesh assembly.

[0009] In one embodiment, the bolt assembly includes a plurality of screws and nuts, wherein the screws are evenly arranged inside the fixing rod, and a number of nuts at the other end cooperate with the fixing rod to fix the fixing plate.

[0010] In one embodiment, a displacement assembly is further provided on the base surface, the displacement assembly including a cylinder assembly, a sliding plate is provided between the hydraulic pump and the base, a sliding groove is provided on the base surface, the sliding plate is slidably connected to the inside of the sliding groove, the hydraulic pump is slidably connected to the surface of the sliding plate, and one end of the cylinder rod is fixedly connected to one side of the sliding plate, which can push it to slide.

[0011] In one embodiment, the second impact assembly includes a base plate three, which is located between and flush with base plate one and base plate two. A second motor is disposed on the surface of base plate two, and a rotating rod is fixedly connected to one side of the shaft of the second motor. A support member one is also fixedly connected to the upper side of base plate two. A rotating rod of the same type is rotatably connected to one side of support member one, wherein synchronous belt assemblies are disposed on the surfaces of the two rotating rods. A pair of support members two are fixedly connected to the surface of base plate two, and the rotating rods are rotatably connected to the interior of support members two. A second stud is fixedly connected to one side of each rotating rod. A pair of guide plates three are disposed on the surfaces of base plate one and base plate three, and a frame is slidably connected to the surface of guide plates three. A bracket is also slidably connected to the surface of guide plates three. The interior of the frame and the bracket is threadedly connected to the second stud. A magnetic suction member is disposed on one side of the frame, and a connecting rod is disposed on one side of the frame. A second impact member is rotatably connected to the interior of the connecting rod. The second impact member is detachable and replaceable and adapts to the workpiece of the magnetic suction member.

[0012] In one embodiment, a plurality of support plates are provided on both sides of the fixing plate, and the number and shape of the support plates on both sides correspond.

[0013] In one embodiment, the support plate is a right-angled isosceles triangle.

[0014] A strength testing device for automobile door panels and automobile grilles includes the following steps: S1. First, install the grille assembly in the simulated vehicle frame, and fix the grille assembly and the fixing rod fixed on one side of the fixing plate with bolts. S2. Adjust the overall height of the base by using the lifting assembly to correct the height of the hydraulic pump, screw two, and the first impact component, in conjunction with subsequent impact strength testing; S3. Before the impact test, the detection component is adjusted to match the position of the grille component. After the impact, the grille is detected to capture the deformation and displacement of the grille during the impact. Compared with existing technologies, the beneficial effects achieved by this invention are as follows: by simulating the vehicle frame to replicate the installation angle of the actual vehicle, the force path of the grille is ensured to be consistent with that of the actual vehicle, thus solving the problem of data distortion caused by traditional fixing methods; the lifting component enables height adjustment of the first impact component, and the displacement component enables fine adjustment of the horizontal position, allowing the first impact component to be replaced to adapt to different scenarios and cover diverse working conditions; the second impact component provides variable speed impact detection, expanding the detection range, and the dual displacement sensors simultaneously monitor key areas of the grille, capturing data at the moment of failure in real time, providing complete data support for grille strength determination and structural optimization. Attached Figure Description

[0015] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the location of the grille components in this invention; Figure 3 This is a schematic diagram of the fixing component of the present invention; Figure 4 This is a schematic diagram of the detection component of the present invention; Figure 5 This is a schematic diagram of the first impact component of the present invention; Figure 6 This is a schematic diagram of the second impact component of the present invention; In the diagram: 1. Base plate one; 101. Simulated vehicle frame; 102. Grille assembly; 103. Fixing rod; 104. Fixing plate; 105. Screw one; 106. Nut; 107. Support plate; 2. Bracket; 201. Guide plate 1; 202. Displacement sensor; 203. Transmission line; 204. Data box; 205. Locking screw; 3. Base plate two; 301. Guide plate two; 302. Slide rod; 303. Base; 304. Slide groove; 305. Slide plate; 306. Cylinder assembly; 307. Hydraulic pump; 308. Screw two; 309. First impact component; 310. First motor; 311. First stud; 312. Threaded cylinder; 4. Base plate three; 401. Frame; 402. Magnetic suction component; 403. Second impact component; 404. Connecting rod; 405. Guide plate three; 406. Second motor; 407. Rotating rod; 408. Support component two; 409. Second stud; 410. Support component one; 411. Synchronous belt assembly. Detailed Implementation

[0017] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0018] Please see Figure 1-6The present invention provides a technical solution: a vehicle door panel and a vehicle grille strength testing device, comprising a fixing component, a testing component and a first impact component. The fixing component includes a base plate 1, a simulated vehicle frame 101 is provided on one side of the base plate 1, a grille component 102 is provided inside the simulated vehicle frame 101, a fixing rod 103 is provided on one side of the grille component 102, a fixing plate 104 is fixedly connected to one side of the base plate 1, and a bolt fixing component is provided between the fixing plate 104 and the fixing rod 103. The testing component is located on the upper side of the fixing component and is adapted to the grille component 102. The first impact assembly includes a base plate 3, a base 303, a hydraulic pump 307, a screw 308, and a first impact member 309. The hydraulic pump 307 is located on the upper surface of the base 303. The screw 308 is fixedly connected to one side of the hydraulic pump 307 to achieve telescopicity. The screw 308 has a threaded connection to a replaceable first impact member 309. A lifting assembly is provided between the base plate 3 and the base 303. The lifting assembly includes a first motor 310. A first stud 311 is provided on one side of the first motor 310. A threaded cylinder 312 is provided on one side of the base 303. The first stud 311 and the threaded cylinder 312 are internally threadedly connected. A number of sliding rods 302 are provided on one side of the base 303. A number of guide plates 301 are provided on one side of the base plate 3. The number of sliding rods 302 and guide plates 301 corresponds and they are internally slidably connected.

[0019] Specifically, the fixing components are used to fix the grille according to the actual vehicle condition to avoid data distortion caused by fixing deviation during testing. They include base plate 1, simulated vehicle frame 101, grille assembly 102, fixing rod 103, fixing plate 104, bolt fixing assembly and support plate 107. The base plate 1 is made of steel to provide stable support for the fixed components and prevent shaking during testing; The simulated vehicle frame 101 is fixed to the upper surface of the base plate 1. Its structural dimensions and installation angle simulate the grille installation area of ​​the real vehicle frame. The interior is reserved with space to match the grille component 102, ensuring that the posture of the grille after placement is consistent with the real vehicle, and ensuring that the test data is closer to the real impact. The fixing rod 103 and the fixing plate 104 are connected by bolt fixing components to fix the grille. The fixing rod 103 is welded to one side of the grille assembly 102, and the fixing plate 104 is welded to the upper surface of the base plate 1. The fixing rod 103 and the fixing plate 104 are connected by bolt fixing components to fix the grille. The stability is strong and it fits the actual grille and the internal fixing structure of the vehicle frame. The first impact assembly is used to apply a controllable impact force to the grille, and includes a second base plate 3, a base 303, a hydraulic pump 307, a second screw 308, a first impact member 309, a lifting assembly, and a displacement assembly. The second base plate 3 uses the same material and size as the first base plate 1, and is placed flush with the first base plate 1 to ensure that the impact direction is consistent with the force direction of the grille; four rectangular guide plates 301 are welded to the upper surface of the second base plate 3, and four matching sliding rods 302 are welded to the lower surface of the base 303. The sliding rods 302 are slidably connected to the guide plates 301 to provide guidance for the lifting and lowering of the base. Lifting assembly: used to adjust the height of the first impact component, including a first motor 310, a first stud 311, and a threaded cylinder 312. The first motor is fixed to one side of the base plate 3, and the output shaft is connected to the first stud 311 through a coupling. The threaded cylinder 312 is welded to the lower surface of the base 303. When the first motor is started, since the slide rod 302 on one side of the base 303 is slidably connected to the inside of the guide plate 301, the first stud 311 rotates, driving the threaded cylinder and the base 303 to perform lifting and lowering movements, rather than rotational movements, so as to adapt to different height grilles and cooperate with the subsequent operation of the second impact assembly. One side of the hydraulic pump 307 is connected to the screw 308. The hydraulic pump drives the screw to extend and retract to achieve the impact action. The end of the screw 308 is connected to the first impact component 309 through a threaded connection. The first impact component can be made of rubber, steel ball, or plastic according to the test requirements. The thread has self-locking properties, and the fixing effect is firm and easy to replace.

[0020] The detection component includes a bracket 2, a guide plate 201 is provided on one side of the bracket 2, a displacement sensor 202 is slidably connected to the surface of the guide plate 201, a data box 204 is provided on one side of the bracket 2, a transmission line 203 is provided between the displacement sensor 202 and the data box 204, and a pair of locking screws 205 are provided on the surface of the displacement sensor 202. The guide plate 201, the displacement sensor 202 and the transmission line 203 are a pair and symmetrically distributed. The position of the displacement sensor 202 is adapted to the position of the grille component 102.

[0021] Specifically, the detection component is used to collect the deformation and displacement of the grille in real time during the impact, providing data support for strength determination. It includes bracket 2, guide plate 201, displacement sensor 202, transmission line 203, data box 204, and locking screw 205. The bracket 2 is made of stainless steel in a gate-shaped structure. The bottom is set on the surface of the base plate 1 and is not fixed. It needs to be matched with the subsequent second impact component. The top crossbeam is adapted to the position of the middle grille component 102. The top beam of bracket 2 has symmetrical guide plates 201 welded on both sides. A laser displacement sensor 202 is slidably connected to the surface of guide plate 201. A pair of locking screws 205 are provided on the surface of the sensor. Tightening the locking screws can fix the sensor in any position on the guide plate, which is convenient for adjusting the monitoring point according to the size of the grid. The data box 204 is fixed on one side of the bracket 2. The displacement sensor 202 is connected to the data box through the shielded transmission line 203. The collected deformation data can be collected and displayed in real time, and data storage and export are supported. The plate 201, displacement sensor 202 and transmission line 203 are each provided in pairs and symmetrically distributed. The sensor probes are respectively aligned with the front center of the middle grid assembly 102 and the top grid beam to achieve synchronous monitoring of key areas and avoid the risk of failure due to omission of a single monitoring point.

[0022] The bolt assembly includes several screws 105 and nuts 106. The screws 105 are evenly arranged inside the fixing rod 103, and the other end of the bolt assembly has a matching number of nuts 106 that cooperate with it to fix the fixing rod 103 to the fixing plate 104.

[0023] Specifically, the bolt fixing assembly includes several hexagonal screws 105 and anti-loosening nuts 106. The screws 105 are evenly inserted through the mounting holes of the fixing rod 103, and the other end is threaded with the nut 106 to ensure that the fixing rod 103 and the fixing plate 104 fit tightly together.

[0024] The base 303 is also provided with a displacement component, which includes a cylinder assembly 306, a slide plate 305 between the hydraulic pump 307 and the base 303, a groove 304 on the surface of the base 303, the slide plate 305 and the groove 304 are slidably connected, the hydraulic pump 307 is slidably connected to the surface of the slide plate 305, and one end of the cylinder rod of the cylinder assembly 306 is fixedly connected to one side of the slide plate 305, which can push it to slide.

[0025] Specifically, the displacement assembly is used to adjust the horizontal position of the first impactor and includes a pneumatic cylinder assembly 306, a shaped slide plate 305, and a slide groove 304. The upper surface of the base 303 has a shaped slide groove 304. The slide plate 305 is slidably connected to the slide groove. The hydraulic pump 307 is fixed to the surface of the slide plate by bolts. One end of the cylinder rod is welded to the side of the slide plate. The start cylinder can push the slide plate to slide along the slide groove to achieve fine adjustment of the horizontal position of the first impactor. It can be used to test different areas such as the center and edge of the grille.

[0026] The second impact assembly includes a base plate 3 4, which is located between and flush with base plate 1 and base plate 2 3. A second motor 406 is mounted on the surface of base plate 2 3, and a rotating rod 407 is fixedly connected to one side of the shaft of the second motor 406. A support member 1 410 is also fixedly connected to the upper side of base plate 2 3, and a rotating rod 407 of the same type is rotatably connected to one side of support member 1 410. Synchronous belt assemblies 411 are mounted on the surfaces of the two rotating rods 407. A pair of support members 2 408 are fixedly connected to the surface of base plate 2 3, and the rotating rods 407 are rotatably connected to the support members 2 408. A second stud 409 is fixedly connected to one side of the rod 407. A pair of guide plates 405 are provided on the surfaces of the base plate 1 and the base plate 4. The frame 401 is slidably connected to the surface of the guide plate 405. The bracket 2 is also slidably connected to the surface of the guide plate 405. The frame 401 and the bracket 2 are threadedly connected to the second stud 409 inside. A magnetic suction component 402 is provided on one side of the frame 401. A connecting rod 404 is provided on one side of the frame 401. A second impact component 403 is rotatably connected inside the connecting rod 404. The second impact component 403 is detachable and replaceable and is adapted to the workpiece by the magnetic suction component 402.

[0027] Specifically, the second impact component can simulate static drop hammer impact testing. Compared to the constant-speed impact driven by the hydraulic pump in the first impact component, different impact velocities can be achieved by replacing the second impact component 403 with different weights and shapes, ensuring more comprehensive results throughout the testing process. After fixing the grille component 102, the initial grille data is recorded by testing the component. The second motor 406 drives the output shaft and rotating rod 407 on one side to rotate. The synchronous belt component 411 on the surface of the rotating rod 407 drives the other rotating rod 407 to rotate. The synchronous rotation of the two rotating rods 407 drives the second stud 409 fixed on one side to rotate. The frame 401 and bracket 2 connected by threads on its surface move synchronously. The first impact component slides on the surface of guide plate 405. At this time, the lifting component and the displacement component adjust the position of the entire first impact component to avoid conflict with the second impact component 403. The magnetic suction component 402 releases the second impact component 403. One end of the second impact component is rotated and connected to the inside of the connecting rod 404, and the other end should fall and impact the surface of the grille component 102 under its own weight. The second impact component can be replaced to adapt to more environments. At this time, the second motor 406 drives the rotating rod 407 to rotate in the opposite direction. The frame 401 and the bracket 2 return to their original positions. The original position is the apex and the initial point. It cannot continue to move in the direction of the second motor 406 to avoid data errors caused by displacement affecting the detection effect. The impact result is detected and the data is collected.

[0028] Several support plates 107 are provided on both sides of the fixed plate 104. The number and shape of the support plates 107 on both sides correspond, and the support plates 107 are right-angled isosceles triangles.

[0029] Specifically, the support plate 107: right-angled isosceles triangular support plates 107 are welded to both sides of the fixing plate 104. The number of support plates 107 on both sides is symmetrical. They are used to enhance the bending strength of the fixing plate 104 and prevent the deformation of the fixing plate from affecting the stress state of the grille during testing.

[0030] Working principle: First, place the grille assembly 102 to be tested into the positioning groove of the simulated vehicle frame 101, and ensure that the grille mounting holes are aligned with the positioning holes of the simulated vehicle frame; attach the fixing rod 103 on one side of the grille to the fixing plate 104, insert the screw 105 and tighten the nut 106, check the fitting gap between the grille and the simulated vehicle frame, and ensure that the posture after fixing is consistent with the real vehicle. Method 1: Adjust the height of the first impact component, start the first motor 310, and the first stud 311 set on one side of the first motor 310 rotates in place. The threaded cylinder 312 connected to the surface of the first motor 310 drives the base 303 fixed on one side and the slide rod 302 to adjust the height along the guide plate 301, so that the center of the first impact member 309 is aligned with the target impact point. The cooperation between the slide rod and the guide plate 301 ensures that the impact direction is perpendicular. Start the cylinder assembly 306 of the displacement component, push the slide plate 305 to slide along the slide groove 304, and fine-tune the horizontal position of the first impact member. Select the appropriate first impact member 309 according to the test scenario, screw it into the end of the second screw 308 and tighten it. The thread has self-locking properties, and the overall structure is stable. Displacement sensor 202 on sliding guide plate 201 is used to align two sensors with the center of the front of the grille and the top grille beam, respectively. Tighten fastening screw 205 to fix the position. Turn on the power of data box 204 and calibrate the sensor zero point. Start hydraulic pump 307, set impact pressure and extension speed, and drive screw 308 to drive the first impactor 309 to impact the grille. During the impact, the data box records the displacement change curve in real time. After the impact, observe whether the grille has cracks or deformation. Compare the displacement data with the preset threshold to determine whether the grille strength is qualified. Method 2: After fixing the grille assembly 102, the initial grille data is recorded by testing the detection component. The second motor 406 drives the output shaft and rotating rod 407 on one side to rotate. The synchronous belt assembly 411 on the surface of the rotating rod 407 drives the other rotating rod 407 to rotate. The synchronous rotation of the two rotating rods 407 drives the second stud 409 fixed on one side to rotate. The frame 401 and bracket 2 connected by threads on its surface move synchronously and slide on the surface of the guide plate 405. At this time, the lifting component and the displacement component adjust the position of the entire first impact component to avoid collision with the second impact component. When the impact component 403 collides, the magnetic component 402 releases the second impact component 403. One end of the magnetic component 402 is rotatably connected to the inside of the connecting rod 404, while the other end falls under its own weight and impacts the surface of the grille assembly 102. The second impact component can be replaced to adapt to more environments. At this time, the second motor 406 drives the rotating rod 407 to rotate in the opposite direction, and the frame 401 and the bracket 2 return to their original positions. The original position is the apex and the initial point, and it cannot continue to move in the direction of the second motor 406 to avoid data errors caused by displacement affecting the detection effect. The impact result is detected and data is collected.

[0031] By simulating the chassis to replicate the installation angle of the actual vehicle, the stress path of the grille is ensured to be consistent with that of the actual vehicle, thus solving the problem of data distortion caused by traditional fixing methods. The lifting component enables height adjustment of the first impact component, and the displacement component enables fine adjustment of the horizontal position. The replaceable first impact component can adapt to different scenarios and cover diverse working conditions. The second impact component provides speed change and deformation impact detection, expanding the detection range. Dual displacement sensors simultaneously monitor key areas of the grille, and collect and capture data at the moment of failure in real time, providing complete data support for grille strength determination and structural optimization.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection, the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0033] The above provides a detailed description of an automotive door panel and automotive grille strength testing device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vehicle door guard and vehicle mesh strength detection device, comprising a fixing assembly, a detection assembly, a first impact assembly and a second impact assembly, characterized in that: The fixed assembly includes a bottom plate one (1), one side of the bottom plate one (1) is provided with an analog frame (101), the inside of the analog frame (101) is provided with a middle net assembly (102), one side of the middle net assembly (102) is provided with a fixed rod (103), one side of the bottom plate one (1) is fixedly connected with a fixed plate (104), the fixed plate (104) and the fixed rod (103) are provided with a bolt fixing assembly, and the detection assembly is located on the upper side of the fixed assembly and is matched with the middle net assembly (102). The first impact assembly includes a bottom plate two (3), a base (303), a hydraulic pump (307), a screw rod two (308) and a first impact piece (309), the hydraulic pump (307) is arranged on the upper surface of the base (303), the screw rod two (308) is fixedly connected with one side of the hydraulic pump (307), and cooperation can realize scalability, the screw rod two (308) is threadedly connected with the replaceable first impact piece (309), the bottom plate two (3) and the base (303) are provided with a lifting assembly, the lifting assembly includes a first motor (310), one side of the first motor (310) is provided with a first screw post (311), one side of the base (303) is provided with a threaded cylinder (312), the first screw post (311) and the threaded cylinder (312) are internally threadedly connected, one side of the base (303) is provided with a plurality of sliding rods (302), one side of the bottom plate two (3) is provided with a plurality of guide plates two (301), the number of the sliding rods (302) corresponds to the number of the guide plates two (301) and is internally and slidably connected.

2. The automobile door guard plate and automobile mesh strength detection device according to claim 1, characterized in that: The detection assembly includes a support (2), one side of the support (2) is provided with a guide plate one (201), the surface of the guide plate one (201) is slidably connected with a displacement sensor (202), one side of the support (2) is provided with a data box (204), the displacement sensor (202) and the data box (204) are provided with a transmission line (203), and the displacement sensor (202) is provided with a pair of locking screws (205).

3. The automobile door guard plate and automobile mesh strength detection device according to claim 2, characterized in that: The guide plate one (201), the displacement sensor (202) and the transmission line (203) are symmetrically distributed in pairs, and the position of the displacement sensor (202) is matched with the position of the middle net assembly (102).

4. The automobile door guard plate and automobile mesh strength detection device according to claim 1, characterized in that: The bolt assembly includes a plurality of screw rods one (105) and nuts (106), the screw rods one (105) are uniformly arranged in the fixed rod (103), and the other end of the number of the nuts (106) is matched with the fixed rod (103) and the fixed plate (104).

5. The automobile door guard plate and automobile mesh strength detection device according to claim 1, characterized in that: Wherein the base (303) surface is also provided with displacement components, the displacement components includes a cylinder assembly (306), the hydraulic pump (307) and the base (303) between the setting has a sliding plate (305), the base (303) surface is provided with a sliding groove (304), the sliding plate (305) and the sliding groove (304) inside sliding connection, the hydraulic pump (307) and the sliding plate (305) surface sliding connection, the air cylinder assembly (306) air rod one end and the sliding plate (305) one side fixed connection, can push its sliding.

6. The automobile door guard plate and automobile mesh strength detection device according to claim 5, characterized in that: The second impact component includes a bottom plate three (4), the bottom plate three (4) is located between the bottom plate one (1) and the bottom plate two (3) and is flush with them, the surface of the bottom plate two (3) is provided with a second motor (406), the rotating shaft of the second motor (406) is fixedly connected with a rotating rod (407) on one side, the upper side of the bottom plate two (3) is also fixedly connected with a support piece one (410), the support piece one (410) is rotatably connected with two rotating rods (407) on one side, and the surfaces of the two rotating rods (407) are provided with a synchronous belt assembly (411), the surface of the bottom plate two (3) is fixedly connected with a pair of support pieces two (408), the rotating rods (407) are rotatably connected with the support pieces two (408) inside, the rotating rods (407) are fixedly connected with second studs (409) on one side, the surfaces of the bottom plate one (1) and the bottom plate three (4) are provided with a pair of guide plates three (405), the surfaces of the guide plates three (405) are slidably connected with frame bodies (401), the surfaces of the guide plates three (405) are also slidably connected with the brackets (2), the frame bodies (401) and the brackets (2) are both threadedly connected with the second studs (409) inside, one side of the frame body (401) is provided with a magnetic attraction piece (402), one side of the frame body (401) is provided with a connecting rod (404), the connecting rod (404) is rotatably connected with a second impact piece (403) inside, the second impact piece (403) is detachably replaced and matched with the magnetic attraction piece (402).

7. The automobile door guard plate and automobile mesh strength detection device according to claim 1, characterized in that: The surfaces of the two sides of the fixed plate (104) are provided with a plurality of support plates (107), and the number and shape of the two side support plates (107) correspond.

8. The automobile door guard plate and automobile mesh strength detection device according to claim 7, characterized in that: The support plate (107) is an isosceles right triangle.

9. The use method of the automobile door guard plate and the automobile mesh strength detection device according to claim 1, characterized in that: The method comprises the following steps: S1, first install the mesh assembly (102) in the simulation vehicle frame (101), and fix the mesh assembly (102) and the fixed rod (103) fixed on one side of the mesh assembly (102) on one side of the fixed plate (104) through the bolt assembly; S2, adjust the overall height of the base (303) through the lifting assembly, so that the hydraulic pump (307), the second screw (308) and the first impact piece (309) are height corrected, and cooperate with the subsequent impact strength test; S3, before the impact test, adjust the position of the detection assembly, detect the mesh after impact after the position of the detection assembly is matched with the mesh assembly (102), and capture the deformation displacement of the mesh during the impact process.

Images