Impact resistance testing device for automobile bottom guard plate

Abstract

The invention discloses an automobile bottom guard plate impact resistance testing device, which belongs to the field of automobile bottom plate testing and comprises a base, supports are fixedly connected to the front and rear ends of the top of the base, and a top plate is fixedly connected to the tops of the supports. Side plates are fixedly connected to the front side and the rear side of the top of the top plate, supporting legs are fixedly connected to the two sides of the top of the base, and pressure sensors are fixedly connected to the tops of the supporting legs. The impact block can be pulled to descend from different heights through a pull rope, different impact strengths are simulated, a T-shaped slot in the impact block is aligned with an insertion plate to be inserted, a connecting plate is reversely rotated to drive the insertion plate to move upwards, and the impact block is clamped and fixed, so that the impact blocks in different shapes can be rapidly replaced; and therefore, the situation that the automobile floor is impacted by different objects can be simulated, and the reliability of test data of the equipment can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile bottom plate testing, more particularly to an automobile bottom guard plate impact resistance testing device. BACKGROUND

[0002] The automobile bottom guard plate is also called automobile deflector. The engine bottom guard plate is a guard plate installed at the bottom of the engine. Its main function is to prevent the engine bottom from being damaged by bumps when the vehicle is running on a bumpy road. It is an engine protection device designed according to various vehicle models to prolong the service life of the engine and avoid damage to the engine caused by external factors during travel.

[0003] The automobile bottom guard plate protects the bottom of the engine, so its impact resistance directly affects its protection capability. The existing bottom guard plate needs to be sampled for impact resistance testing after processing. The impact block is raised to a certain height, the bottom guard plate is placed below it, and finally the impact block falls and directly contacts the bottom guard plate. The falling gravity of the impact block is used to test the impact resistance of the bottom guard plate.

[0004] During actual driving, the automobile bottom plate will be impacted by different objects, and the speed of the vehicle is related to the impact force. The greater the speed, the greater the impact force. However, the existing equipment is equipped with uniform heavy blocks. When simulating the impact resistance of the automobile, it cannot simulate the impact effect of different shaped objects and different impact forces, resulting in insufficient representativeness of the test data of the equipment. SUMMARY

[0005] In view of the problems in the prior art, the purpose of the present application is to provide an automobile bottom guard plate impact resistance testing device.

[0006] To solve the above problems, the technical scheme adopted by the present application is as follows.

[0007] An automobile bottom guard plate impact resistance testing device, comprising a base, the top of the base is fixedly connected with a support at the front and rear ends, the top of the support is fixedly connected with a top plate, the top of the top plate is fixedly connected with a side plate at the front and rear sides, the top of the base is fixedly connected with a support leg at both sides, and the top of the support leg is fixedly connected with a pressure sensor.

[0008] One side of the side plate is provided with a release assembly for pulling heavy objects, and the upper side of the pressure sensor is provided with an angle adjusting assembly for adjusting the angle of the automobile bottom plate.

[0009] The release assembly includes a first servo motor fixedly connected on one side of the side plate and a slot opened in the inside of the top plate, the output end of the first servo motor is fixedly connected with a winding roller, the outer surface of the winding roller is wound with a pull rope, one end of the pull rope is fixedly connected with a connecting plate, the inside of the connecting plate is threadedly connected with a first threaded rod, the bottom of the first threaded rod is rotatably connected with a plug plate, the outer surface of the plug plate is sleeved with an impact block, the inner top of the impact block is provided with a T-shaped insertion slot, and the both sides of the slot are provided with limiting assemblies.

[0010] Further, the outer surface of the first threaded rod is fixedly connected with a bearing, and the bearing is connected with the plug plate, the both sides of the inside of the connecting plate are provided with threaded grooves, and the first threaded rod is connected with the threaded grooves, and the T-shaped insertion slot is matched with the plug plate.

[0011] Further, one side of the winding roller is rotatably connected with one side of the other side plate, and the output end of the first servo motor penetrates the inside of the side plate.

[0012] Further, the limiting assembly includes first electric sliding rails arranged on the both sides of the slot, the inside of the two first electric sliding rails is slidably connected with a swing frame, the both sides of the inside of the swing frame are provided with second electric sliding rails, the inside of the two second electric sliding rails is slidably connected with a sliding frame, the both sides of the inside of the sliding frame are rotatably connected with first rollers, and the front and rear ends of the inside of the sliding frame are rotatably connected with second rollers.

[0013] Further, the two first rollers and the two second rollers form a "mouth" shaped structure, the pull rope penetrates the inside of the sliding frame, and the pull rope is located between the two first rollers and the two second rollers.

[0014] Further, the angle adjusting assembly includes a mounting plate fixedly connected on the top of the pressure sensor, the top of the mounting plate is fixedly connected with a supporting plate, the inside of the supporting plate is rotatably connected with a rotating shaft, one side of the rotating shaft is fixedly connected with a fixed plate, the other side of the rotating shaft is fixedly connected with a worm gear, one side of the fixed plate is fixedly connected with a horizontal plate, the top of the horizontal plate is fixedly connected with an electric suction disc, one side of the mounting plate is fixedly connected with a mounting seat, the front end of the mounting seat is fixedly connected with a worm, the worm is located below the worm gear, the worm is meshed with the worm gear, the outer surface of the rotating shaft is fixedly provided with a pointer, the front side of the supporting plate is fixedly connected with a protractor, the bottom of the horizontal plate is provided with a soot blowing assembly, and the top of the fixed plate is provided with an extrusion assembly.

[0015] Further, the soot blowing assembly comprises a connecting pipe fixed at the bottom of the horizontal plate and an air pump fixed at the top of the base, the bottom of the connecting pipe is fixedly connected with a flow guide pipe, the top of the connecting pipe is fixedly connected with a gas distribution frame, a plurality of air outlets are formed in the top of the gas distribution frame, and the output end of the air pump is fixedly connected with the flow guide pipe.

[0016] Further, the top of the connecting pipe penetrates the inside of the horizontal plate, the gas distribution frame is fixedly connected with the top of the horizontal plate, the gas distribution frame and the electric chuck are sequentially and spacedly arranged, and the gas distribution frame, the connecting pipe and the inside of the flow guide pipe are in communication with each other.

[0017] Further, the extrusion assembly comprises a second servo motor fixed at the top of the fixed plate and two vertical grooves formed in the inside of the fixed plate, the output end of the second servo motor is fixedly connected with a second threaded rod, the outer surface of the second threaded rod is threadedly connected with a transmission rod, the two sides of the transmission rod are fixedly connected with sliding blocks, the inside of each sliding block is hingedly connected with an extrusion plate, and one side of each sliding block is fixedly connected with a coil spring.

[0018] Further, the sliding block is located in the inside of the vertical groove and is adapted to slide, and the hinged shafts of the extrusion plates and the sliding blocks are connected with the coil springs.

[0019] Compared with the prior art, the present application has the following advantages: 1. The release assembly is provided, the impact block is pulled down from different heights by the pull rope, different impact forces are simulated, the T-shaped insertion slot on the impact block is aligned with the insertion plate, the insertion plate is moved upwardly by rotating the connecting plate, and the impact block is clamped and fixed, so that different shaped impact blocks can be quickly replaced, the situation that the automobile bottom plate is impacted by different objects can be simulated, and the reliability of the data tested by the equipment device is effectively improved. 2. The sliding frame can be moved above each position of the automobile bottom plate by moving in the transverse and longitudinal directions, the first roller and the second roller synchronously pull the pull rope, the impact block is synchronously moved above the position to be measured by the pull rope, the impact resistance of the automobile bottom plate at different positions can be effectively tested, the practicability of the testing device is further improved, and the impact force on the automobile bottom plate at the moment of impact is detected by the pressure sensor.

[0020] 3. The angle adjusting assembly is provided, the worm drives the worm gear to rotate, the worm gear drives the fixed plate as a whole to rotate through the rotating shaft, the rotating shaft drives the pointer to move in front of the protractor until the pointer stops rotating at the position of the required angle value, and then the automobile bottom plate is impacted by the free fall of the impact block, so that the impact effect of different impact angles on the automobile bottom plate can be tested. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Structure diagram of the present application; Figure 2 Structure diagram of the release assembly of the present application Figure 1 ; Figure 3 Structure diagram of the release assembly of the present application Figure 2 ; Figure 4 Structure diagram of the limiting assembly of the present application; Figure 5 Structure diagram of the release assembly of the present application Figure 3 ; Figure 6 Structure diagram of the angle adjusting assembly of the present application Figure 1 ; Figure 7 Structure diagram of the angle adjusting assembly of the present application Figure 2 ; Figure 8 Structure diagram of the angle adjusting assembly of the present application Figure 3 ; Figure 9 Structure diagram of the slider of the present application.

[0022] Explanation of the figure: 1, base; 2, support; 3, side plate; 4, top plate; 5, release assembly; 51, first servo motor; 52, winding roller; 53, pull rope; 54, connecting plate; 55, limiting assembly; 551, first electric sliding rail; 552, swing frame; 553, sliding frame; 554, first roller; 555, second roller; 556, second electric sliding rail; 56, first threaded rod; 57, T-shaped slot; 58, impact block; 59, plug plate; 510, slot; 6, angle adjusting assembly; 61, mounting plate; 62, support plate; 63, rotating shaft; 64, fixed plate; 65, cross plate; 66, electric suction disc; 67, soot blowing assembly; 671, air pump; 672, flow guide pipe; 673, air distribution frame; 674, air outlet; 675, connecting pipe; 68, extrusion assembly; 681, second servo motor; 682, vertical slot; 683, slider; 684, second threaded rod; 685, transmission rod; 686, extrusion plate; 687, coil spring; 69, worm gear; 610, worm; 611, mounting seat; 612, pointer; 613, protractor; 7, support leg; 8, pressure sensor. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described; obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments of the present application; based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0024] Please refer to Figures 1 to 9 , a device for testing the impact resistance of an automobile underbody panel, comprising a base 1, a support 2 fixedly connected to the top of the base 1, a top plate 4 fixedly connected to the top of the support 2, side plates 3 fixedly connected to the top of the front and rear sides of the top plate 4, support legs 7 fixedly connected to the top of the base 1, pressure sensors 8 fixedly connected to the top of the support legs 7, a release assembly 5 provided on one side of the side plate 3 for pulling a weight, and an angle adjustment assembly 6 provided above the pressure sensors 8 for adjusting the angle of the automobile underbody panel.

[0025] As shown in Figure 2 , Figure 3 and Figure 5 , the release assembly 5 comprises a first servo motor 51 fixedly connected to one side of the side plate 3 and a slot 510 provided in the inside of the top plate 4, the output end of the first servo motor 51 is fixedly connected with a winding roller 52, the outer surface of the winding roller 52 is wound with a pull rope 53, one end of the pull rope 53 is fixedly connected with a connecting plate 54, the inside of the connecting plate 54 is threadedly connected with a first threaded rod 56, the bottom of the first threaded rod 56 is rotatably connected with a plug plate 59, the outer surface of the plug plate 59 is sleeved with an impact block 58, the inner top of the impact block 58 is provided with a T-shaped insertion slot 57, and the inside of the slot 510 is provided with a limiting assembly 55 on both sides.

[0026] The outer surface of the first threaded rod 56 is fixedly connected with a bearing, and the bearing is connected with the plug plate 59, the inside of the connecting plate 54 is provided with a threaded groove on both sides, the first threaded rod 56 is connected with the threaded groove, and the T-shaped insertion slot 57 is matched with the plug plate 59.

[0027] One side of the winding roller 52 is rotatably connected with one side of the other side plate 3, and the output end of the first servo motor 51 penetrates the inside of the side plate 3.

[0028] When conducting an impact experiment on the car floor, the car floor is fixed by the angle adjustment component 6. The first servo motor 51 is turned on to drive the winding roller 52 to rotate. The winding roller 52 rotates to wind the pulling rope 53. The impact block 58 is lifted by the connecting plate 54. When the impact block 58 is lifted to a certain height, the first servo motor 51 is powered off and stops rotating. Under the action of the gravity of the impact block 58, the pulling rope 53 is pulled to quickly descend. The descending of the pulling rope 53 will drive the winding roller 52 to rotate self - rotatably. The quickly descending pulling rope 53 impacts the fixed car floor. At the moment of impact, the impact force is detected by the pressure sensor 8 installed on the support leg 7, and the detected data is transmitted to the terminal. By pulling the impact block 58 to descend from different heights, different impact forces are simulated. The first threaded rod 56 is rotated to drive the insertion plate 59 and the impact block 58 as a whole to move downward. The impact block 58 is removed from the insertion plate 59, and an impact block 58 with a different shape is replaced. The T - shaped slot 57 is aligned with the insertion plate 59 and inserted. The connecting plate 54 is rotated to drive the insertion plate 59 to move upward to clamp and fix the impact block 58. Thus, different - shaped impact blocks 58 can be quickly replaced, and the situation where the car floor is impacted by different objects can be simulated, effectively improving the reliability of the test data of the equipment device.

[0029] As Figure 2 , and Figure 4 shown, the limit component 55 includes first electric slide rails 551 arranged on both sides inside the slot 510. A swing frame 552 is slidably connected inside the two first electric slide rails 551. Second electric slide rails 556 are arranged on both sides inside the swing frame 552. A sliding frame 553 is slidably connected inside the two second electric slide rails 556. First rollers 554 are rotatably connected to both sides inside the sliding frame 553. Second rollers 555 are rotatably connected to the front and rear ends inside the sliding frame 553.

[0030] The two first rollers 554 and the two second rollers 555 form a "square" - shaped structure. The pulling rope 53 passes through the inside of the sliding frame 553, and the pulling rope 53 is located between the two first rollers 554 and the two second rollers 555.

[0031] The automobile floor is irregular in shape, so the impact resistance of different areas of the automobile floor is different, and the impact resistance of different positions needs to be tested. At this time, the first electric sliding rail 551 can be started to drive the swing frame 552 to move inside it, and the second electric sliding rail 556 can be started to drive the sliding frame 553 to move inside it. Through horizontal and vertical movement, the sliding frame 553 can be moved above each position of the automobile floor, and the first roller 554 and the second roller 555 can simultaneously pull the rope 53, and the impact block 58 can be moved above the position to be measured by the rope 53. Thus, the impact resistance of the automobile floor at different positions can be effectively tested, further improving the practicality of the testing device, and the impact force on the automobile floor at the moment of impact can be detected by the pressure sensor 8.

[0032] As shown in Figure 6 - Figure 8 The angle adjusting assembly 6 includes a mounting plate 61 fixed on the top of the pressure sensor 8, a support plate 62 fixedly connected to the top of the mounting plate 61, a rotating shaft 63 rotatably connected to the inside of the support plate 62, a fixed plate 64 fixedly connected to one side of the rotating shaft 63, a worm wheel 69 fixedly connected to the other side of the rotating shaft 63, a horizontal plate 65 fixedly connected to one side of the fixed plate 64, an electrostatic chuck 66 fixedly connected to the top of the horizontal plate 65, an installation seat 611 fixedly connected to one side of the mounting plate 61, a worm 610 fixedly connected to the front end of the installation seat 611, the worm 610 being located below the worm wheel 69, the worm 610 and the worm wheel 69 being meshed with each other, a pointer 612 fixedly provided on the outer surface of the rotating shaft 63, a protractor 613 fixedly connected to the front side of the support plate 62, a soot blowing assembly 67 provided on the bottom of the horizontal plate 65, and an extrusion assembly 68 provided on the top of the fixed plate 64.

[0033] When the automobile floor is tested for impact resistance, not only different weights and impact forces need to be simulated for testing, but also the impact angle needs to be considered, and the impact of different impact angles on the automobile floor. The floor is placed on a plurality of electrostatic chucks 66, the electrostatic chucks 66 are started to adsorb and fix the automobile floor, the worm 610 is rotated to drive the worm wheel 69 to rotate, the worm wheel 69 drives the fixed plate 64 as a whole to rotate through the rotating shaft 63, the rotating shaft 63 drives the pointer 612 to move in front of the protractor 613, and the pointer 612 stops rotating until it moves to the desired angle value position. The automobile floor is impacted by the free-falling impact block 58, so that the impact effect of different impact angles on the automobile floor can be tested.

[0034] As shown in Figure 6 and Figure 7As shown in the drawings, the blowing ash assembly 67 comprises a connecting pipe 675 fixed at the bottom of the horizontal plate 65 and an air pump 671 fixed at the top of the base 1, the bottom of the connecting pipe 675 is fixedly connected with a flow guide pipe 672, the top of the connecting pipe 675 is fixedly connected with a gas distribution frame 673, a plurality of air outlets 674 are formed in the top of the gas distribution frame 673, and the output end of the air pump 671 is fixedly connected with the flow guide pipe 672.

[0035] The top of the connecting pipe 675 penetrates the inside of the horizontal plate 65, the gas distribution frame 673 is fixedly connected with the top of the horizontal plate 65, the gas distribution frame 673 and the electrostatic chuck 66 are sequentially and spacedly arranged, and the inside of the gas distribution frame 673, the connecting pipe 675 and the flow guide pipe 672 are in communication with each other.

[0036] When the automobile bottom plate is adsorbed and fixed by the electrostatic chuck 66, a large amount of dust will be attached to the surface of the automobile bottom plate, which greatly reduces the adsorption effect of the electrostatic chuck 66, so that when the automobile bottom plate is tested for impact resistance, the workbench will be offset due to the vibration caused by the impact, so that the data tested by the pressure sensor 8 is not accurate enough. The air pump 671 is started to deliver air flow to the inside of the flow guide pipe 672, the air flow is sequentially delivered to the inside of the gas distribution frame 673 through the connecting pipe 675, and the air flow in the inside of the gas distribution frame 673 is sprayed out through the air outlets 674. Before the automobile bottom plate contacts the electrostatic chuck 66, the air flow blows off the dust at the adsorption position of the electrostatic chuck 66, improves the cleanliness of the adsorption position, ensures the adsorption strength of the electrostatic chuck 66, avoids the automobile bottom plate from accidentally falling off the electrostatic chuck 66, and avoids affecting the test data.

[0037] As shown in the drawings, Figure 6 , Figure 7 and Figure 9 , the extrusion assembly 68 comprises a second servo motor 681 fixed at the top of the fixed plate 64 and two vertical grooves 682 formed in the inside of the fixed plate 64, the output end of the second servo motor 681 is fixedly connected with a second threaded rod 684, the outer surface of the second threaded rod 684 is threadedly connected with a transmission rod 685, the two sides of the transmission rod 685 are fixedly connected with a sliding block 683, the inside of the sliding block 683 is hingedly connected with an extrusion plate 686, and one side of the sliding block 683 is fixedly connected with a coil spring 687.

[0038] The sliding block 683 is located in the inside of the vertical groove 682 and is slidably adapted, the hinged shaft of the extrusion plate 686 and the sliding block 683 is connected with the coil spring 687.

[0039] In the test, the car floor is only adsorbed by the electric chuck 66, and after several rounds of tests, the vibration caused by the impact can cause the car floor to be accidentally detached from the electric chuck 66. At this time, the second servo motor 681 is started to drive the second threaded rod 684 to rotate, the second threaded rod 684 drives the transmission rod 685 to move downward through the thread, the transmission rod 685 drives the two sliding blocks 683 to slide in the vertical slot 682, the sliding block 683 drives the pressing plate 686 to move downward, and the pressing plate 686 presses the car floor above the electric chuck 66 to double-fix the car floor. At the beginning of placing the car floor, the floor is pressed above the pressing plate 686, and the pressing plate 686 rotates around the hinge with the sliding block 683, so that the car floor smoothly passes through the pressing plate 686. At this time, the pressing plate 686 is reset under the action of the coil spring 687.

[0040] Method of use: At the beginning of placing the car floor, the floor is pressed above the pressing plate 686, and the pressing plate 686 rotates around the hinge with the sliding block 683, so that the car floor smoothly passes through the pressing plate 686. At this time, the pressing plate 686 is reset under the action of the coil spring 687, the air pump 671 is started to deliver air flow to the inside of the flow guide pipe 672, the air flow is delivered to the inside of the air distribution frame 673 through the connecting pipe 675 in turn, and the air flow in the air distribution frame 673 is sprayed out through the air outlet 674. Before the car floor contacts the electric chuck 66, the air flow blows off the dust at the position adsorbed by the electric chuck 66, improving the cleanliness of the adsorption position. When the car floor contacts the electric chuck 66, the electric chuck 66 is started to adsorb and fix the car floor, the second servo motor 681 is started to drive the second threaded rod 684 to rotate, the second threaded rod 684 drives the transmission rod 685 to move downward through the thread, the transmission rod 685 drives the two sliding blocks 683 to slide in the vertical slot 682, and the sliding block 683 drives the pressing plate 686 to move downward. The pressing plate 686 presses the car floor above the electric chuck 66 to double-fix the car floor; The first servo motor 51 is started to drive the winding roller 52 to rotate, the winding roller 52 rotates to wind the pull rope 53, and the impact block 58 is lifted through the connecting plate 54. When the impact block 58 is lifted to a certain height, the first servo motor 51 is powered off and no longer rotates. Under the action of the gravity of the impact block 58, the pull rope 53 is pulled to quickly descend, the pull rope 53 drives the winding roller 52 to rotate, and the pull rope 53 quickly descending impacts the fixed car floor. At the moment of impact, the pressure sensor 8 installed on the supporting leg 7 detects the impact force and transmits the detected data to the terminal. The first electric slide rail 551 is started to drive the swing frame 552 to move inside, the second electric slide rail 556 is started to drive the slide frame 553 to move inside, through horizontal and vertical movement, the slide frame 553 can be moved above each position of the automobile floor, the first roller shaft 554 and the second roller shaft 555 can synchronously drive the pull rope 53, the impact block 58 is synchronously moved above the position to be measured through the pull rope 53, so that the impact resistance of the automobile floor at different positions can be effectively tested; The rotating worm 610 drives the worm wheel 69 to rotate, the worm wheel 69 drives the fixed plate 64 to rotate as a whole through the rotating shaft 63, the rotating shaft 63 drives the pointer 612 to move in front of the protractor 613 until the pointer 612 stops rotating at the position of the required angle value, and then the automobile floor is impacted by the free fall of the impact block 58, so that the impact effect of different impact angles on the automobile floor can be tested.

[0041] The above is only the preferred specific embodiment of the present application; but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An automobile underbody shield impact resistance testing device, comprising a base (1), the top of the base (1) is fixedly connected with a support (2) at the front and rear ends, the top of the support (2) is fixedly connected with a top plate (4), the top of the top plate (4) is fixedly connected with side plates (3) at the front and rear sides, the top of the base (1) is fixedly connected with support legs (7) at both sides, and the top of the support legs (7) is fixedly connected with a pressure sensor (8); characterized in that One side of the side plate (3) is provided with a traction weight release assembly (5), and the upper side of the pressure sensor (8) is provided with an angle adjusting assembly (6) for adjusting the angle of the automobile underbody plate; The release assembly (5) comprises a first servo motor (51) fixedly connected to one side of the side plate (3) and a slot (510) opened in the inside of the top plate (4), the output end of the first servo motor (51) is fixedly connected with a winding roller (52), the outer surface of the winding roller (52) is wound with a pull rope (53), one end of the pull rope (53) is fixedly connected with a connecting plate (54), the inside of the connecting plate (54) is threadedly connected with a first threaded rod (56), the bottom of the first threaded rod (56) is rotatably connected with a plug plate (59), the outer surface of the plug plate (59) is sleeved with an impact block (58), the inner top of the impact block (58) is provided with a T-shaped insertion slot (57), and the both sides of the inside of the slot (510) are provided with limiting assemblies (55).

2. The device for testing the impact resistance of an underbody shield of an automobile according to claim 1, characterized in that: The outer surface of the first threaded rod (56) is fixedly connected with a bearing, and the bearing is connected with the plug plate (59), the both sides of the inside of the connecting plate (54) are provided with threaded grooves, the first threaded rod (56) is connected with the threaded grooves, and the T-shaped insertion slot (57) is matched with the plug plate (59).

3. The device for testing the impact resistance of an underbody shield of an automobile according to claim 2, characterized in that: One side of the winding roller (52) is rotatably connected with one side of the other side plate (3), and the output end of the first servo motor (51) penetrates the inside of the side plate (3).

4. The device for testing the impact resistance of an underbody shield of an automobile according to claim 1, characterized in that: The limiting assembly (55) comprises first electric sliding rails (551) arranged at both sides of the inside of the slot (510), a swing frame (552) slidably connected in the inside of the first electric sliding rails (551), second electric sliding rails (556) arranged at both sides of the inside of the swing frame (552), a sliding frame (553) slidably connected in the inside of the second electric sliding rails (556), first rollers (554) rotatably connected at both sides of the inside of the sliding frame (553), and second rollers (555) rotatably connected at the front and rear ends of the inside of the sliding frame (553).

5. The device for testing the impact resistance of an underbody shield of an automobile according to claim 4, characterized in that: The two first rollers (554) and the two second rollers (555) form a "mouth" shaped structure, the pull rope (53) penetrates the inside of the sliding frame (553), and the pull rope (53) is located between the two first rollers (554) and the two second rollers (555).

6. The device for testing the impact resistance of an underbody shield of an automobile according to claim 1, characterized by: The angle adjusting component (6) comprises a mounting plate (61) fixed on the top of the pressure sensor (8), the top of the mounting plate (61) is fixedly connected with a supporting plate (62), the inside of the supporting plate (62) is rotatably connected with a rotating shaft (63), one side of the rotating shaft (63) is fixedly connected with a fixed plate (64), the other side of the rotating shaft (63) is fixedly connected with a worm wheel (69), one side of the fixed plate (64) is fixedly connected with a horizontal plate (65), the top of the horizontal plate (65) is fixedly connected with an electrostatic chuck (66), one side of the mounting plate (61) is fixedly connected with a mounting seat (611), the front end of the mounting seat (611) is fixedly connected with a worm (610), the worm (610) is located below the worm wheel (69), the worm (610) and the worm wheel (69) are meshed with each other, the outer surface of the rotating shaft (63) is fixedly provided with a pointer (612), the front side of the supporting plate (62) is fixedly connected with a protractor (613), the bottom of the horizontal plate (65) is provided with a soot blowing assembly (67), and the top of the fixed plate (64) is provided with an extrusion assembly (68).

7. The device according to claim 6, wherein: The soot blowing assembly (67) comprises a connecting pipe (675) fixed on the bottom of the horizontal plate (65) and a gas pump (671) fixed on the top of the base (1), the bottom of the connecting pipe (675) is fixedly connected with a flow guide pipe (672), and the top of the connecting pipe (675) is fixedly connected with a gas distribution frame (673); a plurality of air outlets (674) are formed in the top of the gas distribution frame (673), and the output end of the gas pump (671) is fixedly connected with the flow guide pipe (672).

8. The device according to claim 7, characterized in that: The top of the connecting pipe (675) penetrates the inside of the horizontal plate (65), the gas distribution frame (673) is fixedly connected with the top of the horizontal plate (65), and the gas distribution frame (673) and the electrostatic chuck (66) are sequentially and spacedly arranged, and the gas distribution frame (673), the connecting pipe (675) and the inside of the flow guide pipe (672) are in communication with each other.

9. The device for testing the impact resistance of an underbody shield of a vehicle according to claim 6, characterized in that: The extrusion assembly (68) comprises a second servo motor (681) fixed on the top of the fixed plate (64) and two vertical grooves (682) formed in the inside of the fixed plate (64), the output end of the second servo motor (681) is fixedly connected with a second threaded rod (684), the outer surface of the second threaded rod (684) is threadedly connected with a transmission rod (685), the two sides of the transmission rod (685) are fixedly connected with a sliding block (683), the inside of the sliding block (683) is hingedly connected with an extrusion plate (686), and one side of the sliding block (683) is fixedly connected with a coil spring (687).

10. The device for testing the impact resistance of an underbody shield of an automobile according to claim 9, characterized by: The sliding block (683) is located in the inside of the vertical groove (682) and is slidably matched, and the hinged shaft of the extrusion plate (686) and the sliding block (683) is connected with the coil spring (687).

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