A fixing tool for automobile anti-collision beam impact test

Abstract

The utility model discloses a kind of fixed tool for automobile crash beam impact test, belong to automobile crash beam technical field.The device includes base, the upper surface of base is equipped with first mounting bracket and second mounting bracket, the side of first mounting bracket is equipped with guide chute, adjusting mechanism is equipped on the guide chute, clamping mechanism is equipped on the adjusting mechanism, the adjusting mechanism includes horizontal adjusting assembly and height adjusting assembly, the clamping mechanism includes first limiting component and second limiting component, the second limiting component is equipped on first limiting component, and can be moved along length direction, adjusting mechanism moves along guide chute in horizontal direction, while horizontal adjusting assembly and height adjusting assembly respectively complete the two-way adjustment of horizontal distance and vertical height, and clamping mechanism is synchronous with height adjusting assembly Lifting, and between first limiting component and second limiting component, respectively along height direction and length direction, relative movement is made.

Description

Technical Field

[0001] This utility model relates to the field of automotive anti-collision beam technology, and in particular to a fixing fixture for automotive anti-collision beam impact testing. Background Technology

[0002] The automotive crash beam impact test fixture is an auxiliary device specifically designed for testing the impact resistance performance of crash beams in the field of automotive component testing. It is mainly used in scenarios such as factory inspection of crash beams and performance verification during the R&D stage. Its core purpose is to accurately fix the automotive crash beam to be tested in a preset position on the impact test stand, ensuring that the crash beam maintains a preset posture during the test, providing a stable impact benchmark for the impact test equipment, thereby ensuring the smooth conduct of the impact test process and the objectivity and validity of the test data.

[0003] The existing vehicle anti-collision beam impact test fixing device mainly consists of a base, clamping seats fixed at both ends of the base, an assembly plate horizontally mounted between the clamping seats, and clamping components mounted on the assembly plate. The working process is roughly as follows: Before the test, the operator first selects the corresponding mounting hole on the assembly plate according to the width specification of the anti-collision beam to be tested, fixes the fixed clamp in place, and then selects the appropriate positioning hole on the clamping seat according to the thickness of the anti-collision beam. The assembly plate is fixed at the corresponding height by the positioning bolt. Then the anti-collision beam is placed between the fixed clamp and the movable clamp. The adjusting nut is turned to drive the movable clamp to move towards the fixed clamp until the anti-collision beam is clamped. After the fixing is completed, the impact test equipment is started to conduct an impact test on the anti-collision beam. This leads to some shortcomings: First, the adjustment of horizontal spacing and vertical height depends on the fixed mounting holes on the assembly plate. The adjustment range is limited by the distribution of the holes, making it impossible to achieve continuous and flexible adjustment. It is difficult to adapt to anti-collision beams of different widths and thicknesses, resulting in poor device versatility. Second, the clamping components are fixed only by the one-way clamping of the fixed clamping plate and the movable clamping plate. There is no special limiting structure for the height and length of the anti-collision beam. During the impact test, the anti-collision beam is prone to lateral slippage or longitudinal loosening under the impact force. Utility Model Content

[0004] This utility model provides a fixing fixture for impact testing of automotive anti-collision beams, which can solve the problem that existing fixing fixtures for impact testing of automotive anti-collision beams are difficult to adapt to anti-collision beams of different widths and thicknesses.

[0005] A fixing fixture for impact testing of an automobile anti-collision beam includes a base, a support foot on the lower surface of the base, a first mounting bracket perpendicular to the base and a second mounting bracket on the upper surface of the base, a guide groove extending along the length direction on the side of the first mounting bracket, an adjustment mechanism symmetrically arranged on the guide groove along its width direction, and a clamping mechanism on the adjustment mechanism. The adjustment mechanism includes a horizontal adjustment component and a height adjustment component, and the clamping mechanism is mounted on the height adjustment component; The clamping mechanism includes a first limiting component and a second limiting component; The first limiting component is disposed on the height adjusting component and can move along the height direction; The second limiting component is disposed on the first limiting component and can move along the length direction.

[0006] Preferably, the horizontal adjustment assembly includes a mounting base, a limiting base, a first motor, a first adjusting screw, and a slider; The mounting base is fixedly mounted on the upper surface of the slider by bolts; The limiting seat is fixedly installed on both sides of the first mounting bracket by bolts; The first motor is fixedly mounted on a limiting seat on one side by bolts, and its output end faces the center of the first mounting bracket; One end of the first adjusting screw is fixedly connected to the output end of the first motor, and the other end is rotatably connected to the limiting seat on the other side and threadedly connected to the slider. The slider is slidably mounted on the guide groove, with its lower surface close to the side of the first mounting bracket.

[0007] Preferably, the height adjustment assembly includes a first guide rod, a second motor, an adjustment component, a second adjustment screw, and a fixed base; The first guide rod is fixedly mounted on the second mounting bracket along its length. The second motor is slidably connected to the first guide rod, and its output end faces the mounting base; The end of the adjusting component is adapted to the nut at one end of the second adjusting screw and is sleeved on its outer circumference; the bottom of the adjusting component is fixedly connected to the output end of the second motor. The other end of the second adjusting screw passes through the fixed seat and is rotatably connected to the mounting base; The fixed seat is threadedly engaged with the second adjusting screw.

[0008] Preferably, the first limiting component includes a second guide rod, an upper clamping plate, a lower clamping plate, and a third adjusting screw; Both the upper clamping plate and the lower clamping plate are slidably connected to the second guide rod; The third adjusting screw is set along the height direction, with one end extending through the upper surface of the upper clamping plate and a nut at its end, and the other end rotatably connected to the upper surface of the lower clamping plate. The third adjusting screw is threadedly engaged with the upper clamping plate.

[0009] Preferably, the fixing seat has a slot on the side near the first limiting component, and the second guide rod is fixedly installed in the slot along the height direction.

[0010] Preferably, the second guide rod is cylindrical, and both the upper and lower clamping plates are provided with circular sliding holes adapted to the second guide rod, wherein the inner wall of the circular sliding hole slides in contact with the outer wall of the second guide rod.

[0011] Preferably, the second limiting component includes an upper sliding seat, a lower sliding seat, a guide groove, and a limiting plate; Both the upper sliding seat and the lower sliding seat can move toward the first limiting component; The guide groove is formed on the side of the upper sliding seat away from the first limiting component; The limiting plate is provided with a guide block that is adapted to the guide groove; The bottom of the limiting plate can abut against the upper surface of the lower sliding seat.

[0012] Preferably, the guide block has a T-shaped structure, the guide groove is a T-shaped groove adapted to the guide block, and the guide block is embedded in the T-shaped groove and can slide along the length direction of the T-shaped groove.

[0013] Preferably, the second limiting component further includes a third guide rod and a fourth adjusting screw; One end of the third guide rod is fixedly connected to the upper sliding seat and the lower sliding seat, and the other end is slidably connected to the upper clamping plate and the lower clamping plate; One end of the fourth adjusting screw passes through the lower sliding seat and is threadedly connected to the lower clamping plate, while the other end passes through the limiting plate, and a nut is provided at its protruding end.

[0014] Preferably, the support feet are located around the lower surface of the base, with their tops welded to the base and their bottoms fixed by bolts.

[0015] The beneficial effects of this utility model are as follows: Through the coordinated cooperation between the guide slide and the adjustment mechanism, the adjustment mechanism moves horizontally along the guide slide. At the same time, the horizontal adjustment component and the height adjustment component of the adjustment mechanism work together to complete the bidirectional adjustment of the horizontal spacing and vertical height, respectively. The clamping mechanism and the height adjustment component move synchronously with the height adjustment component. The first limiting component and the second limiting component of the clamping mechanism move relative to each other in the height and length directions, respectively. By using the cooperation of the first limiting component clamping the height direction of the anti-collision beam and the second limiting component limiting the length direction of the anti-collision beam, comprehensive adaptation to anti-collision beams of different widths and thicknesses is achieved, forming a multi-dimensional limiting fixation. This effectively prevents the anti-collision beam from sliding laterally or loosening longitudinally during impact testing, ensuring the consistency of the test benchmark and the authenticity of the test results. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the fixture used for impact testing of the automotive anti-collision beam; Figure 2 This is a three-dimensional structural diagram of the fixed fixture used for impact testing of automotive anti-collision beams without the anti-collision beams removed. Figure 3 for Figure 2 A cross-sectional view along the cutting line AA. Figure 4 This is an isometric view of the fixture used for impact testing of the automotive anti-collision beam; Figure 5 for Figure 4 A cross-sectional view along the cutting line BB.

[0017] Explanation of reference numerals in the attached figures: 1. Base; 2. Support foot; 3. First mounting bracket; 4. Second mounting bracket; 5. Guide groove; 6. Adjustment mechanism; 61. Horizontal adjustment component; 611. Mounting seat; 612. Limiting seat; 613. First motor; 614. First adjusting screw; 615. Slider; 62. Height adjustment component; 621. First guide rod; 622. Second motor; 623. Adjusting component; 624. Second adjusting screw; 625. Fixed seat; 7. Clamping mechanism; 71. First limiting component; 711. Second guide rod; 712. Upper clamping plate; 713. Lower clamping plate; 714. Third adjusting screw; 72. Second limiting component; 721. Upper sliding seat; 722. Lower sliding seat; 723. Guide groove; 724. Limiting plate; 725. Guide block; 726. Third guide rod; 727. Fourth adjusting screw. Detailed Implementation

[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0019] like Figures 1 to 5 As shown in the figure, the present invention provides a fixing fixture for impact testing of an automobile anti-collision beam, including a base 1, a support foot 2 on the lower surface of the base 1, a first mounting bracket 3 perpendicular to the base 1 and a second mounting bracket 4 on the upper surface of the base 1, a guide groove 5 extending along the length direction on the side of the first mounting bracket 3, an adjustment mechanism 6 symmetrically arranged on the guide groove 5 along its width direction, and a clamping mechanism 7 on the adjustment mechanism 6. The adjustment mechanism 6 includes a horizontal adjustment component 61 and a height adjustment component 62, and the clamping mechanism 7 is mounted on the height adjustment component 62. The clamping mechanism 7 includes a first limiting component 71 and a second limiting component 72; The first limiting component 71 is disposed on the height adjusting component 62 and can move along the height direction; The second limiting component 72 is disposed on the first limiting component 71 and can move along the length direction.

[0020] Support foot 2 is fixedly connected to the lower surface of base 1. First mounting bracket 3 and second mounting bracket 4 are vertically erected on the upper surface of base 1 and form a stable support reference. Guide groove 5 provides horizontal sliding guide for adjustment mechanism 6. Adjustment mechanism 6 achieves bidirectional adjustment through the coordinated cooperation of horizontal adjustment component 61 and height adjustment component 62. Clamping mechanism 7 forms a multi-directional limiting structure through the combination of first limiting component 71 and second limiting component 72. Due to the common problems of insufficient adjustment flexibility and single limiting direction of existing fixed fixtures, they cannot adapt to the testing requirements of anti-collision beams of different specifications and it is difficult to guarantee the fixed stability during impact testing. Through the movement adjustment of horizontal adjustment component 61 and height adjustment component 62, the fixture can adapt to anti-collision beams of different widths and thicknesses. At the same time, the first limiting component 71 and the second limiting component 72 form double limiting along the height and length directions, respectively, effectively avoiding displacement of anti-collision beams during testing, ensuring the stability of the testing process and the accuracy of the test results, and improving the universal adaptability and reliability of the fixture.

[0021] The horizontal adjustment assembly 61 includes a mounting base 611, a limiting base 612, a first motor 613, a first adjusting screw 614, and a slider 615; The mounting base 611 is fixedly mounted on the upper surface of the slider 615 by bolts; The limiting seat 612 is fixedly installed on both sides of the first mounting bracket 3 by bolts; The first motor 613 is fixedly mounted on the limiting seat 612 on one side by bolts, and its output end faces the center of the first mounting bracket 3; One end of the first adjusting screw 614 is fixedly connected to the output end of the first motor 613, and the other end is rotatably connected to the limiting seat 612 on the other side and threadedly connected to the slider 615. The slider 615 is slidably disposed on the guide groove 5, with its lower surface close to the side of the first mounting bracket 3.

[0022] Limiting seats 612 are symmetrically fixed on both sides of the first mounting bracket 3, providing end support for the first adjusting screw 614. The first motor 613 is fixed to one side of the limiting seat 612 and drives the first adjusting screw 614 to rotate. The slider 615 is linked with the first adjusting screw 614 through threaded engagement and slides along the guide groove 5. The mounting seat 611 is fixed to the slider 615 by bolts, realizing the horizontal movement of the entire adjusting mechanism 6. Because the anti-collision beam has various width specifications, manually adjusting the clamping distance is cumbersome and lacks positioning accuracy, affecting testing efficiency and clamping stability. By driving the first adjusting screw 614 to rotate through the first motor 613, the slider 615 is driven to slide smoothly along the guide groove 5 through threaded transmission, thereby adjusting the horizontal distance between the two sets of adjusting mechanisms 6. This not only makes the operation convenient but also ensures the accuracy of the distance adjustment, allowing the mounting seat 611 to drive the subsequent clamping mechanism 7 to accurately align with both sides of the anti-collision beam, ensuring the fit between the clamping mechanism 7 and the anti-collision beam, improving clamping stability and testing preparation efficiency.

[0023] The height adjustment assembly 62 includes a first guide rod 621, a second motor 622, an adjustment component 623, a second adjustment screw 624, and a fixed base 625; The first guide rod 621 is fixedly mounted on the second mounting bracket 4 along its length; The second motor 622 is slidably connected to the first guide rod 621, and its output end faces the mounting base 611; The end of the adjusting member 623 is adapted to the nut at one end of the second adjusting screw 624 and is sleeved on its outer periphery; the bottom of the adjusting member 623 is fixedly connected to the output end of the second motor 622. The other end of the second adjusting screw 624 passes through the fixed base 625 and is rotatably connected to the mounting base 611; The fixed base 625 is threadedly engaged with the second adjusting screw 624.

[0024] The first guide rod 621 is fixed to the second mounting bracket 4 and provides sliding guidance for the second motor 622. The output end of the second motor 622 is fixed to the adjusting component 623. The adjusting component 623 drives the screw to rotate by matching with the nut at the end of the second adjusting screw 624. One end of the second adjusting screw 624 is rotatably connected to the mounting base 611, and the other end is threadedly engaged with the fixed base 625 to realize the height adjustment of the fixed base 625. Because the thickness of anti-collision beams of different specifications varies, it is necessary to adjust the height of the clamping mechanism 7 to ensure that the anti-collision beam is on the preset test reference plane. The traditional height adjustment method is cumbersome and lacks precision. The second motor 622 drives the adjusting component 623 to drive the second adjusting screw 624 to rotate. The threaded transmission makes the fixed base 625 rise and fall smoothly along the screw axis. The first guide rod 621 ensures the stability of the movement of the second motor 622, thereby driving the clamping mechanism 7 to accurately adjust the height, so that the anti-collision beam always fits the test reference plane, improving the accuracy of the test and the adaptability of the tooling.

[0025] The first limiting component 71 includes a second guide rod 711, an upper clamping plate 712, a lower clamping plate 713, and a third adjusting screw 714; The upper clamping plate 712 and the lower clamping plate 713 are both slidably connected to the second guide rod 711; The third adjusting screw 714 is arranged along the height direction, with one end extending through the upper surface of the upper clamping plate 712 and a nut at its end, and the other end rotatably connected to the upper surface of the lower clamping plate 713. The third adjusting screw 714 is threadedly engaged with the upper clamping plate 712.

[0026] The second guide rod 711 provides sliding guidance for the upper clamping plate 712 and the lower clamping plate 713, allowing them to move up and down along the guide rod. The third adjusting screw 714 is vertically disposed between the upper clamping plate 712 and the lower clamping plate 713, with one end rotatably connected to the lower clamping plate 713 and the other end threadedly engaged with the upper clamping plate 712. The end nut facilitates the application of adjustment force, clamping and fixing the anti-collision beam in the height direction to prevent it from loosening or shifting in the height direction during an impact. It also adapts to… For anti-collision beams of different thicknesses, by rotating the end nut of the third adjusting screw 714, the upper clamping plate 712 is driven to move downward along the second guide rod 711 via threaded transmission. It cooperates with the lower clamping plate 713 to form a clamping force on the anti-collision beam in the height direction. The second guide rod 711 ensures that the upper clamping plate 712 moves smoothly without deviation, so that the clamping force is evenly applied to the anti-collision beam. This not only ensures the firmness of the clamping, but also adapts to anti-collision beams of different thicknesses and avoids damage to the surface of the anti-collision beam during the clamping process.

[0027] The fixed base 625 has a slot on its side near the first limiting component 71, and the second guide rod 711 is fixedly installed in the slot along the height direction.

[0028] The slot on the side of the fixed base 625 provides a dedicated installation space for the second guide rod 711. The second guide rod 711 is fixed in the slot along the height direction, forming a stable connection with the fixed base 625. This provides a precise and stable installation reference for the second guide rod 711, ensuring a firm connection between the first limiting component 71 and the height adjustment component 62. This prevents the clamping accuracy from being affected by loose connections during testing. The slotted structure allows for precise positioning of the second guide rod 711, keeping the guide rod vertical. It also enhances the connection stability between the second guide rod 711 and the fixed base 625, preventing the first limiting component 71 from shaking or shifting during impact testing. This ensures smooth sliding and precise positioning of the upper clamping plate 712 and the lower clamping plate 713, improving the structural stability and reliability of the entire clamping mechanism 7.

[0029] The second guide rod 711 is cylindrical, and both the upper clamping plate 712 and the lower clamping plate 713 are provided with circular sliding holes adapted to the second guide rod 711. The inner wall of the circular sliding hole slides in contact with the outer wall of the second guide rod 711.

[0030] The second limiting component 72 includes an upper sliding seat 721, a lower sliding seat 722, a guide groove 723, and a limiting plate 724; Both the upper sliding seat 721 and the lower sliding seat 722 can move toward the first limiting component 71; The guide groove 723 is formed on the side of the upper sliding seat 721 away from the first limiting component 71; The limiting plate 724 is provided with a guide block 725 that is adapted to the guide groove 723; The bottom of the limiting plate 724 can abut against the upper surface of the lower sliding seat 722.

[0031] The upper sliding seat 721 and the lower sliding seat 722 can move towards the first limiting component 71. The guide groove 723 is adapted to the guide block 725 on the limiting plate 724 to achieve precise installation of the limiting plate 724. The bottom of the limiting plate 724 abuts against the upper surface of the lower sliding seat 722 to form support. During the impact test, the anti-collision beam is prone to lateral slippage along the length direction, affecting the accuracy of the test data. It is also necessary to adapt to anti-collision beams of different lengths. By moving the upper sliding seat 721 and the lower sliding seat 722 towards the first limiting component 71, the distance between the limiting plate 724 and the anti-collision beam can be adjusted. The cooperation between the guide block 725 and the guide groove 723 ensures that the limiting plate 724 is installed accurately without deviation. The abutment between the bottom of the limiting plate 724 and the lower sliding seat 722 forms a stable support, which can effectively limit the anti-collision beam in the length direction to prevent lateral displacement of the anti-collision beam during the test. At the same time, it can adapt to anti-collision beams of different lengths, improving the limiting reliability and adaptability of the tooling.

[0032] The guide block 725 has a T-shaped structure, and the guide groove 723 is a T-shaped groove adapted to the guide block 725. The guide block 725 is embedded in the T-shaped groove and can slide along the length direction of the T-shaped groove.

[0033] The second limiting component 72 also includes a third guide rod 726 and a fourth adjusting screw 727; One end of the third guide rod 726 is fixedly connected to the upper sliding seat 721 and the lower sliding seat 722, and the other end is slidably connected to the upper clamping plate 712 and the lower clamping plate 713; One end of the fourth adjusting screw 727 passes through the lower sliding seat 722 and is threadedly connected to the lower clamping plate 713, while the other end passes through the limiting plate 724, and a nut is provided at its protruding end.

[0034] One end of the third guide rod 726 is fixed to the upper sliding seat 721 and the lower sliding seat 722, and the other end provides sliding guidance for the upper clamping plate 712 and the lower clamping plate 713. The fourth adjusting screw 727 passes through the lower sliding seat 722 and is threadedly engaged with the lower clamping plate 713. The end nut facilitates the application of adjustment force and passes through the limiting plate 724 to form a limit. Because it is necessary to precisely control the movement distance of the upper sliding seat 721 and the lower sliding seat 722 to ensure the fit between the limiting plate 724 and the anti-collision beam, it is difficult to guarantee the adjustment accuracy by manually moving the sliding seats. By rotating the end nut of the fourth adjusting screw 727, the upper sliding seat 721 and the lower sliding seat 722 are driven to move smoothly along the third guide rod 726 by the thread transmission. The third guide rod 726 ensures that the sliding seat moves in a precise direction and avoids deviation, so that the limiting plate 724 can accurately fit the side of the anti-collision beam, improving the accuracy and firmness of the limit. At the same time, the adjustment operation is convenient and the difficulty of test preparation is reduced.

[0035] The support feet 2 are located around the lower surface of the base 1, with their tops welded to the base 1 and their bottoms fixed by bolts.

[0036] In summary, the working principle of the fixed fixture for impact testing of automobile anti-collision beam provided by this utility model embodiment is as follows: When in use, according to the width specification of the anti-collision beam to be tested, the first motor 613 in the horizontal adjustment component 61 is started. The first motor 613 drives the first adjustment screw 614 to rotate under the support of the limit seats 612 on both sides. Through the threaded transmission, the slider 615 is driven to slide smoothly along the guide groove 5 on the first mounting frame 3, thereby driving the mounting seat 611 fixed with the slider 615 and the entire set of adjustment mechanism 6 and clamping mechanism 7 to move synchronously, so that the two sets of symmetrically arranged clamping mechanisms 7 are precisely adapted to the width spacing of the anti-collision beam. Subsequently, according to the thickness specifications of the anti-collision beam, the second motor 622 in the height adjustment assembly 62 is activated. The second motor 622 maintains a stable posture along the first guide rod 621, and its output end drives the second adjustment screw 624 to rotate through the adjustment component 623. By utilizing the threaded engagement between the second adjustment screw 624 and the fixed seat 625, the fixed seat 625 is driven to rise and fall along the screw axis, thereby adjusting the height of the clamping mechanism 7 to ensure that the anti-collision beam can accurately fit the test reference surface. The anti-collision beam is placed between the upper clamping plate 712 and the lower clamping plate 713 of the first limiting component 71. The end nut of the third adjusting screw 714 is rotated, and the upper clamping plate 712 is driven to move smoothly down along the circular sliding hole of the cylindrical second guide rod 711 through the thread transmission, and forms a clamping force in the height direction with the lower clamping plate 713. Subsequently, the fourth adjusting screw 727 in the second limiting assembly 72 is rotated to drive the upper sliding seat 721 and the lower sliding seat 722 to move along the third guide rod 726 toward the anti-collision beam. The limiting plate 724 precisely cooperates with the T-shaped guide groove 723 of the upper sliding seat 721 through the T-shaped guide block 725, moves synchronously with the sliding seat, and forms stable support through the bottom contact with the lower sliding seat 722, thus limiting the side of the anti-collision beam in the length direction. Ultimately, through the synergistic effect of the components, the anti-collision beam is precisely fixed in the preset test position, effectively resisting the impact force during the impact test, preventing the anti-collision beam from shifting or loosening, and ensuring the stability of the test process and the accuracy of the test results.

[0037] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A fixing fixture for impact testing of an automobile anti-collision beam, comprising a base (1), a support foot (2) on the lower surface of the base (1), a first mounting bracket (3) perpendicular to the base (1) on the upper surface of the base (1), and a second mounting bracket (4), characterized in that: The first mounting bracket (3) has a guide groove (5) extending along the length direction on its side. The guide groove (5) is symmetrically provided with an adjustment mechanism (6) along its width direction. The adjustment mechanism (6) is provided with a clamping mechanism (7). The adjustment mechanism (6) includes a horizontal adjustment component (61) and a height adjustment component (62), and the clamping mechanism (7) is mounted on the height adjustment component (62); The clamping mechanism (7) includes a first limiting component (71) and a second limiting component (72); The first limiting component (71) is disposed on the height adjusting component (62) and can move along the height direction; The second limiting component (72) is disposed on the first limiting component (71) and can move along the length direction.

2. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 1, characterized in that: The horizontal adjustment assembly (61) includes a mounting base (611), a limiting base (612), a first motor (613), a first adjusting screw (614), and a slider (615). The mounting base (611) is fixedly mounted on the upper surface of the slider (615) by bolts; The limiting seat (612) is fixedly installed on both sides of the first mounting bracket (3) by bolts; The first motor (613) is fixedly mounted on a limiting seat (612) on one side by bolts, and its output end faces the center of the first mounting bracket (3); One end of the first adjusting screw (614) is fixedly connected to the output end of the first motor (613), and the other end is rotatably connected to the limiting seat (612) on the other side and threadedly connected to the slider (615). The slider (615) is slidably disposed on the guide groove (5), and its lower surface is close to the side of the first mounting bracket (3).

3. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 1, characterized in that: The height adjustment assembly (62) includes a first guide rod (621), a second motor (622), an adjustment component (623), a second adjustment screw (624), and a fixed base (625). The first guide rod (621) is fixedly mounted on the second mounting bracket (4) along its length; The second motor (622) is slidably connected to the first guide rod (621), and its output end faces the mounting base (611). The end of the adjusting member (623) is adapted to the nut at one end of the second adjusting screw (624) and is sleeved on its outer periphery. The bottom of the adjusting member (623) is fixedly connected to the output end of the second motor (622). The other end of the second adjusting screw (624) passes through the fixed seat (625) and is rotatably connected to the mounting seat (611); The fixed seat (625) is threadedly engaged with the second adjusting screw (624).

4. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 3, characterized in that: The first limiting component (71) includes a second guide rod (711), an upper clamping plate (712), a lower clamping plate (713), and a third adjusting screw (714). The upper clamping plate (712) and the lower clamping plate (713) are both slidably connected to the second guide rod (711); The third adjusting screw (714) is arranged along the height direction, with one end extending through the upper surface of the upper clamping plate (712) and a nut at its end, and the other end rotatably connected to the upper surface of the lower clamping plate (713). The third adjusting screw (714) is threadedly engaged with the upper clamping plate (712).

5. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 4, characterized in that: The fixed base (625) has a slot on the side near the first limiting component (71), and the second guide rod (711) is fixedly installed in the slot along the height direction.

6. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 4, characterized in that: The second guide rod (711) is cylindrical. Both the upper clamping plate (712) and the lower clamping plate (713) are provided with circular sliding holes adapted to the second guide rod (711). The inner wall of the circular sliding hole slides in contact with the outer wall of the second guide rod (711).

7. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 1, characterized in that: The second limiting component (72) includes an upper sliding seat (721), a lower sliding seat (722), a guide groove (723), and a limiting plate (724); Both the upper sliding seat (721) and the lower sliding seat (722) can move toward the first limiting component (71); The guide groove (723) is formed on the side of the upper sliding seat (721) away from the first limiting component (71); The limiting plate (724) is provided with a guide block (725) that is adapted to the guide groove (723); The bottom of the limiting plate (724) may abut against the upper surface of the lower sliding seat (722).

8. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 7, characterized in that: The guide block (725) has a T-shaped structure, and the guide groove (723) is a T-shaped groove adapted to the guide block (725). The guide block (725) is embedded in the T-shaped groove and can slide along the length direction of the T-shaped groove.

9. A fixing fixture for impact testing of an automobile anti-collision beam according to claim 4 or 7, characterized in that: The second limiting component (72) also includes a third guide rod (726) and a fourth adjusting screw (727); One end of the third guide rod (726) is fixedly connected to the upper sliding seat (721) and the lower sliding seat (722), and the other end is slidably connected to the upper clamping plate (712) and the lower clamping plate (713); One end of the fourth adjusting screw (727) passes through the lower sliding seat (722) and is threadedly connected to the lower clamping plate (713), while the other end passes through the limiting plate (724), and a nut is provided at its protruding end.

10. The fixing fixture for impact testing of an automobile anti-collision beam according to claim 1, characterized in that: The support feet (2) are located around the lower surface of the base (1), with their tops welded to the base (1) and their bottoms fixed by bolts.

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