A shock testing machine for automobile water tank inspection

Abstract

This invention discloses an impact testing machine for inspecting automotive radiators, comprising a work frame with support legs fixedly installed at the four corners of the bottom of the work frame. Each set of support legs has a support pad fixedly installed at its bottom. A PLC controller is fixedly installed on the outer right wall of the work frame. A bearing seat is provided at the bottom of the interior of the work frame, and a clamping mechanism is mounted on the bearing seat. An installation plate is provided inside the work frame. This equipment can accurately simulate various impact conditions during actual vehicle operation through angle adjustment, restoring the actual stress state of the radiator. It completely solves the problems of traditional equipment that can only perform vertical impacts, has a single testing scenario, and provides incomplete test data. This allows the impact test data to truly and accurately reflect the impact resistance performance of the automotive radiator in actual use scenarios, effectively avoiding missed or false detections, greatly improving the accuracy and reliability of automotive radiator factory quality inspection, and ensuring the safety and stability of the radiator after installation from the source.

Description

Technical Field

[0001] This invention relates to the field of impact testing machine technology, specifically an impact testing machine for inspecting automotive radiators. Background Technology

[0002] The automotive radiator is a core component of the vehicle's cooling system. Its main function is to dissipate the large amount of waste heat generated by the engine, ensuring the engine remains at its normal operating temperature. This directly determines the operational stability, lifespan, and driving safety of the vehicle's powertrain. After assembly, the radiator faces complex driving conditions. Various external forces, such as bumps and vibrations, impacts from flying gravel, road impingement, and vehicle body deformation, will all affect the radiator. If the radiator's impact resistance is inadequate, it is highly susceptible to problems such as shell cracking, radiator pipe deformation, leaks, and cooling failure, which can lead to serious driving malfunctions such as engine overheating, cylinder scoring, and stalling. Therefore, before leaving the factory, automotive radiators must undergo impact resistance testing using a professional impact testing machine; this is an indispensable and crucial step in the radiator production quality control process.

[0003] Currently, the structural design of existing automotive radiator impact testing machines on the market generally has many defects, making it difficult to meet the quality inspection requirements of high precision, full-dimensionality, and strong adaptability. First, most existing impact testing machines have a fixed vertical impact structure with a single impact angle, only capable of vertical impact testing in the vertical direction. However, during actual driving, the impact angle of external debris and gravel on the automotive radiator is random and multi-directional, with oblique impacts being a frequently occurring stress condition. Impact testing at a single vertical angle cannot simulate the real vehicle driving impact environment, resulting in biased and inaccurate test data. This fails to accurately reflect the actual impact resistance of the radiator, easily leading to missed detections of qualified products and false detections of unqualified products, significantly reducing the reliability of radiator factory quality inspection.

[0004] Secondly, the existing water tank clamping and fixing structures are rudimentary in design and have limited functionality. Most can only provide simple clamping and restraint to the bottom or sides of the water tank, failing to effectively restrain and fix the top edge. During impact testing, especially under oblique impact forces, the water tank is prone to vertical movement, edge lifting, and overall displacement. This not only leads to impact point misalignment and test failure but also causes unstable tank fixing, resulting in force shaking and localized stress concentration, causing abnormal damage to the water tank and further affecting the accuracy and repeatability of test results. Furthermore, traditional clamping structures have poor adaptability, making them difficult to adapt to different specifications and sizes of automotive water tanks. Their extremely low versatility necessitates companies equipping multiple testing devices with different clamps, significantly increasing equipment procurement and space occupancy costs.

[0005] To address these issues, the present invention provides an impact testing machine for inspecting automotive radiators. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an impact testing machine for inspecting automotive radiators, thus solving the aforementioned problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an impact testing machine for inspecting automotive water tanks, comprising a work frame, with support legs fixedly installed at the four corners of the bottom of the work frame, and a support pad fixedly installed at the bottom of each set of support legs; a PLC controller fixedly installed on the outer right wall of the work frame; a bearing seat provided at the bottom of the inside of the work frame, with a clamping mechanism mounted on the bearing seat; an installation plate provided inside the work frame, with a hydraulic cylinder mounted at the top of the installation plate; an installation block slidably installed at the front end of the installation plate; an impact head threadedly mounted at the front end of the installation block; and an angle adjustment mechanism installed inside the work frame.

[0008] Preferably, the angle adjustment mechanism includes two first fixing rods on both sides, two sets of first fixing rods are respectively fixedly installed on both sides of the work frame, and two second fixing rods are also fixedly installed on both sides of the work frame. The two sets of second fixing rods are located above the first fixing rods, and a first horizontal plate is fixedly installed between the two sets of first fixing rods. The bottom end of the rear end of the mounting plate is rotatably connected to the first horizontal plate.

[0009] Preferably, the angle adjustment mechanism further includes a second horizontal plate, which is fixedly installed between two sets of second fixed rods. An arc plate is fixedly installed on the second horizontal plate, and an arc groove is formed on the arc plate. A rotating shaft is rotatably installed at the top rear end of the mounting plate. The rear end of the rotating shaft passes through the arc groove and extends to the outside of the arc groove. A cylinder is rotatably installed on one set of first fixed rods. A telescopic rod is fixedly installed at the output end of the cylinder, and the other end of the telescopic rod is rotatably connected to the rotating shaft.

[0010] Preferably, the clamping mechanism includes a first mounting groove, which is laterally opened at the middle position of the top of the bearing seat. A second mounting groove is also longitudinally opened at the top of the bearing seat. A bidirectional lead screw is rotatably installed inside both the first and second mounting grooves. A first servo motor is fixedly installed on the front end and the right outer wall of the bearing seat. The output ends of the two sets of first servo motors are fixedly connected to the bidirectional lead screws at corresponding positions. L-shaped plates are symmetrically slidably installed inside both the first and second mounting grooves. A pressure plate is provided inside each set of L-shaped plates. A screw is vertically threaded through the middle position of the top of each set of L-shaped plates. The bottom end of each set of screws is rotatably connected to the pressure plate at the corresponding position. Guide rods are vertically slidably installed on both sides of each set of L-shaped plates. The bottom end of each set of guide rods is fixedly connected to the pressure plate at the corresponding position.

[0011] Preferably, a silicone anti-slip pad is fixedly installed at the bottom of each set of pressure plates.

[0012] Preferably, a first transverse groove is provided at the middle position of the bottom of the work frame, and a threaded rod is rotatably installed inside the first transverse groove. A second servo motor is fixedly installed on the outer right wall of the work frame, and the output end of the second servo motor is fixedly connected to the threaded rod. The bottom end of the bearing seat is slidably connected to the first transverse groove and threadedly connected to the threaded rod.

[0013] Preferably, the bottom of the work frame is provided with a second transverse groove at both ends of the first transverse groove. Each set of second transverse grooves is fixedly installed with a stabilizing rod. The bottom of the bearing seat is slidably connected to the second transverse groove at the corresponding position and to the stabilizing rod at the corresponding position.

[0014] Beneficial effects This invention provides an impact testing machine for inspecting automotive radiator tanks. Compared with the prior art, it has the following advantages: This equipment can precisely simulate various impact conditions during actual vehicle operation through angle adjustment, restoring the actual stress state of the water tank. It completely solves the problems of traditional equipment, which can only perform vertical impacts, has a limited testing scenario, and provides incomplete test data. This allows impact test data to accurately reflect the impact resistance performance of the automotive water tank in real-world usage scenarios, effectively avoiding missed or false detections, and greatly improving the accuracy and reliability of automotive water tank factory quality inspection. It ensures the safety and stability of the water tank after installation from the source. Furthermore, the clamping mechanism ensures that the water tank remains absolutely fixed, without deviation, shaking, or tilting throughout the entire testing process. This completely solves the problems of impact point misalignment, test failure, and abnormal damage to the water tank caused by insecure fixing in traditional equipment. It ensures precise point positioning and uniform force distribution in every impact test, effectively improving the repeatability, stability, and accuracy of the experimental data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is the present invention. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged structural diagram at point B.

[0016] In the diagram: 1. Work frame; 2. Support leg; 3. Support pad; 4. First fixed rod; 5. Second fixed rod; 6. First horizontal plate; 7. Second horizontal plate; 8. Arc plate; 9. Arc groove; 10. Mounting plate; 11. Rotating shaft; 12. Cylinder; 13. Telescopic rod; 14. Hydraulic cylinder; 15. Mounting block; 16. Impact head; 17. PLC controller; 18. Bearing seat; 19. First mounting groove; 20. Second mounting groove; 21. Bidirectional lead screw; 22. First servo motor; 23. L-shaped plate; 24. Pressure plate; 25. Screw; 26. Guide rod; 27. First horizontal groove; 28. Threaded rod; 29. ​​Second servo motor; 30. Second horizontal groove; 31. Stabilizing rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: Please see Figure 1-5 An impact testing machine for inspecting automotive water tanks includes a work frame 1. Support legs 2 are fixedly installed at the four corners of the bottom of the work frame 1. Support pads 3 are fixedly installed at the bottom of each set of support legs 2. A PLC controller 17 is fixedly installed on the outer right wall of the work frame 1. A bearing seat 18 is provided at the bottom of the inside of the work frame 1. A clamping mechanism is installed on the bearing seat 18. An installation plate 10 is provided inside the work frame 1. A hydraulic cylinder 14 is installed at the top of the installation plate 10. An installation block 15 is slidably installed at the front end of the installation plate 10. An impact head 16 is threadedly installed at the front end of the installation block 15. The output end of the hydraulic cylinder 14 is fixedly connected to the installation block 15. An angle adjustment mechanism is installed inside the work frame 1.

[0019] The angle adjustment mechanism includes two first fixing rods 4 on both sides. The two sets of first fixing rods 4 are fixedly installed on both sides of the work frame 1. The two sets of second fixing rods 5 are also fixedly installed on both sides of the work frame 1. The two sets of second fixing rods 5 are located above the first fixing rods 4. A first horizontal plate 6 is fixedly installed between the two sets of first fixing rods 4. The bottom end of the rear end of the mounting plate 10 is rotatably connected to the first horizontal plate 6.

[0020] The angle adjustment mechanism also includes a second horizontal plate 7, which is fixedly installed between two sets of second fixed rods 5. An arc plate 8 is fixedly installed on the second horizontal plate 7, and an arc groove 9 is opened on the arc plate 8. A rotating shaft 11 is rotatably installed on the top rear end of the mounting plate 10. The rear end of the rotating shaft 11 passes through the arc groove 9 and extends to the outside of the arc groove 9. A cylinder 12 is rotatably installed on one set of first fixed rods 4. A telescopic rod 13 is fixedly installed on the output end of the cylinder 12, and the other end of the telescopic rod 13 is rotatably connected to the rotating shaft 11.

[0021] The clamping mechanism includes a first mounting groove 19, which is horizontally opened at the middle position of the top of the bearing seat 18. A second mounting groove 20 is also vertically opened at the top of the bearing seat 18. Both the first mounting groove 19 and the second mounting groove 20 are rotatably mounted with bidirectional lead screws 21. The front end and the right outer wall of the bearing seat 18 are fixedly mounted with first servo motors 22. The output ends of the two sets of first servo motors 22 are fixedly connected to the bidirectional lead screws 21 at the corresponding positions. Both the first mounting groove 19 and the second mounting groove 20 are symmetrically slidably mounted with L-shaped plates 23. Each set of L-shaped plates 23 is provided with a pressure plate 24. Each set of L-shaped plates 23 is vertically threaded with a screw 25 at the middle position of the top of the top of the L-shaped plates 23. The bottom end of each set of screws 25 is rotatably connected to the pressure plate 24 at the corresponding position. Both sides of each set of L-shaped plates 23 are vertically slidably mounted with guide rods 26. The bottom end of each set of guide rods 26 is fixedly connected to the pressure plate 24 at the corresponding position.

[0022] Each pressure plate 24 has a silicone anti-slip pad fixedly installed at its bottom.

[0023] A first transverse groove 27 is horizontally opened at the middle position of the bottom of the work frame 1. A threaded rod 28 is rotatably installed inside the first transverse groove 27. A second servo motor 29 is fixedly installed on the outer wall of the right side of the work frame 1. The output end of the second servo motor 29 is fixedly connected to the threaded rod 28. The bottom end of the bearing seat 18 is slidably connected to the first transverse groove 27 and threadedly connected to the threaded rod 28.

[0024] The bottom of the work frame 1 is provided with a second transverse groove 30 at both the front and rear ends of the first transverse groove 27. Each set of second transverse grooves 30 is fixedly installed with a stabilizing rod 31. The bottom of the bearing seat 18 is slidably connected to the second transverse groove 30 at the corresponding position and to the stabilizing rod 31 at the corresponding position.

[0025] Reference Figures 1-5 This embodiment provides an impact testing machine for inspecting automotive radiators. Its core structure includes a work frame, a support system, a control system, an impact execution system, an angle adjustment mechanism, a clamping mechanism, and a lateral displacement adjustment mechanism. The work frame 1 serves as the load-bearing skeleton of the entire machine. Support legs 2 are fixedly installed at the four corners of its bottom. Each set of support legs 2 has a support pad 3 fixedly installed at its bottom. The support pad 3 contacts the ground, ensuring the stability of the entire machine during impact testing, effectively absorbing and dispersing the impact reaction force, and preventing displacement or vibration of the equipment due to high-frequency impact. A PLC controller 17 is fixedly installed on the right outer wall of the work frame. This PLC controller 17 serves as the central control unit of the entire machine, responsible for coordinating the timing, stroke control, and parameter settings of each driving component. Operators can preset the impact force, impact angle, number of impacts, and displacement of each servo motor through the PLC controller 17, achieving automated and digital management of the testing process. A bearing seat 18 is provided at the bottom of the work frame 1. A clamping mechanism is installed on the upper surface of the bearing seat 18 for precise positioning and secure clamping of the automotive radiator to be tested. The work frame also includes a mounting plate 10. A hydraulic cylinder 14 is mounted on the top of the mounting plate 10, serving as the impact power source and providing a stable and adjustable impact force. A mounting block 15 is slidably mounted on the front end of the mounting plate 10, and an impact head 16 is threaded onto the front end of the mounting block 15. The impact head 16 can be replaced according to different testing requirements, such as a spherical head, a flat head, or a conical head, to simulate the impact of different shaped foreign objects on the water tank. The output end of the hydraulic cylinder 14 is fixedly connected to the mounting block 15. When the piston rod of the hydraulic cylinder 14 extends, it pushes the mounting block 15 to move rapidly downwards along the slide rail at the front end of the mounting plate 10, thereby driving the impact head to impact the water tank below. The work frame 1 also includes an angle adjustment mechanism that works in conjunction with the mounting plate 10 to precisely adjust the impact angle of the impact head relative to the horizontal plane, thus simulating oblique impacts from different directions during actual vehicle operation.

[0026] Two sets of first fixing rods 4 are fixedly installed on both sides of the work frame 1, arranged symmetrically to provide a lower support base for angle adjustment. Second fixing rods 5 are also fixedly installed on both sides of the work frame 1, positioned above the corresponding first fixing rods 4, forming a double-layer support structure. A first horizontal plate 6 is fixedly installed between the two sets of first fixing rods 4. The first horizontal plate 6 serves as the lower hinge reference for the mounting plate 10. The rear end of the mounting plate 10 is rotatably connected to the first horizontal plate 6 via a hinge or bearing structure, allowing the mounting plate 10 to swing back and forth with the first horizontal plate 6 as a fulcrum. The angle adjustment mechanism also includes a second horizontal plate 7, fixedly installed between the two sets of second fixing rods 5. An arc plate 8 is fixedly installed on the second horizontal plate 7, with an arc groove 9 formed on the arc plate 8. The center of the arc groove 9 is concentric with the hinge point on the first horizontal plate 6, ensuring that the rotating shaft of the mounting plate 10 always moves along an arc trajectory during the swinging process. A rotating shaft 11 is rotatably mounted on the top rear end of the mounting plate 10. The rear end of the rotating shaft 11 passes through the arc groove 9 and extends to the outside of the arc groove 9. A cylinder 12 is rotatably mounted on one of the first fixed rods 4. A telescopic rod 13 is fixedly mounted on the output end of the cylinder 12. The other end of the telescopic rod 13 is rotatably connected to the part of the rotating shaft 11 located outside the arc groove 9. When angle adjustment is required, the PLC controller 17 controls the cylinder 12 to move. The output end of the cylinder 12 pushes or pulls the telescopic rod, and the telescopic rod 13 drives the rotating shaft 11 to move along the arc groove 9. Since the rotating shaft 11 is rotatably connected to the top of the mounting plate 10 and the bottom of the mounting plate 10 is hinged to the first horizontal plate 6, the mounting plate 10 as a whole deflects around the hinge point of the first horizontal plate 6 under the pushing and pulling action of the telescopic rod 13, thereby driving the hydraulic cylinder 14 and the impact head at the front end of the mounting plate 10 to change their tilt angle synchronously. By precisely controlling the extension and retraction stroke of cylinder 12, the impact angle can be continuously and steplessly adjusted between the vertical state and the tilted state within a certain range. For example, any angle setting can be achieved from 0° to 45° or even larger, completely breaking through the limitation of traditional equipment that can only perform vertical downward impact. It can accurately reproduce the oblique impact load generated by gravel splashing, road bumps, and foreign object collisions during vehicle operation, making the test data closer to the actual stress state of the water tank.

[0027] The clamping mechanism is a key component for securing the water tank. Its specific structure includes a first mounting groove 19 located at the center of the top of the support base 18, arranged laterally (i.e., along the width of the work frame 1). A second mounting groove 20 is also longitudinally located at the top of the support base 18, arranged along the depth of the work frame 1. The first and second mounting grooves 19 and 20 are arranged in a cross shape, corresponding to the clamping requirements in the length and width directions of the water tank, respectively. A bidirectional lead screw 21 is rotatably mounted inside both the first and second mounting grooves 19 and 20. The bidirectional lead screw 21 has a partition in the middle, and the threads on both sides rotate in opposite directions. First servo motors 22 are fixedly mounted on the front end and right outer wall of the support base 18. The output ends of the two sets of first servo motors 22 are fixedly connected to the corresponding bidirectional lead screws 21. When the first servo motors 22 are started, they drive the bidirectional lead screws 21 to rotate forward or backward. L-shaped plates 23 are symmetrically slidably installed inside the first mounting groove 19 and the second mounting groove 20. The bottom end of each set of L-shaped plates 23 is provided with a threaded hole or nut structure that mates with the bidirectional lead screw 21. When the bidirectional lead screw 21 rotates, the two sets of L-shaped plates 23 will move synchronously towards or away from each other along the mounting groove due to the opposite direction of the threads on both sides, thereby realizing the rapid adaptation and clamping of water tanks of different lengths and widths. Each set of L-shaped plates 23 has a pressure plate inside, located below the horizontal plate of the L-shaped plate 23, used to apply pressure downward from the top edge of the water tank. A screw 25 is vertically threaded through the middle of the top of each set of L-shaped plates 23. The bottom end of the screw 25 is rotatably connected to the corresponding pressure plate 24 via a bearing or hinge structure. The operator can adjust the height of the pressure plate by rotating the screw. Guide rods 26 are vertically slidably installed on both sides of each set of L-shaped plates 23. The bottom end of the guide rod 26 is fixedly connected to the corresponding pressure plate 24. The guide rods 26 provide precise guidance and anti-rotation for the vertical movement of the pressure plate 24, ensuring that the pressure plate 24 remains horizontal during lifting and lowering, avoiding tilting. After the pressure plate 24 is adjusted to the appropriate height, the screw 25 is further tightened to press the bottom end of the pressure plate 24 tightly against the top edge of the water tank, achieving vertical positioning and fixation. To further enhance clamping stability and prevent damage to the water tank surface, a silicone anti-slip pad is fixedly installed at the bottom of each pressure plate 24. The silicone anti-slip pad has good elasticity, wear resistance, and anti-slip properties. While providing sufficient friction, it can buffer clamping stress and prevent the pressure plate 24 from directly contacting the metal, thus avoiding scratches or deformation of the water tank surface. The L-shaped plate 23 is driven by the transverse bidirectional lead screw 21 to clamp the side wall of the water tank, and the screw 25 drives the pressure plate 24 to press the top edge of the water tank, forming a three-dimensional fixing system that supports the bottom of the water tank, limits lateral movement, and presses the top, ensuring that the water tank will not move up and down, lift its edges, or shift as a whole when subjected to oblique impact.

[0028] In addition, to achieve precise alignment of the impact point, this embodiment also includes a lateral displacement adjustment mechanism. A first transverse groove 6 is laterally formed at the middle of the bottom of the work frame 1. A threaded rod 28 is rotatably mounted inside the first transverse groove 6, and the threaded rod 28 is arranged along the width direction of the work frame 1. A second servo motor 29 is fixedly mounted on the right outer wall of the work frame 1. The output end of the second servo motor 29 is fixedly connected to the threaded rod 28. The bottom end of the support seat 18 is slidably connected to the first transverse groove 6, and the bottom end of the support seat 18 has a threaded structure that mates with the threaded rod 28. When the second servo motor 29 is started, it drives the threaded rod 28 to rotate, thereby causing the support seat 18 to move laterally along the first transverse groove 27, thus changing the horizontal position of the water tank relative to the impact head 16, and realizing impact testing at different lateral positions of the water tank. To ensure the stability of the bearing seat 18 during movement and impact, the bottom of the work frame 1 is provided with second transverse grooves 30 at both the front and rear ends of the first transverse groove 27. Each set of second transverse grooves 30 is fixedly installed with a stabilizing rod 28. The bottom end of the bearing seat 18 is provided with a slider that slides with the second transverse groove 30, and the slider is slidably connected with the stabilizing rod 31. The stabilizing rod 31 provides front and rear double-sided guide support for the bearing seat 18, effectively suppressing the overturning torque and lateral vibration generated during the impact, and ensuring that the bearing seat 18 always moves smoothly along the predetermined straight line. In the actual testing process, the operator first adjusts the spacing of the L-shaped plates 23 according to the specifications and dimensions of the water tank under test by controlling the first servo motor 22 through the PLC controller 17, and then places the water tank on the support seat 18. Next, the screw 25 is tightened to press the pressure plate 24 against the top edge of the water tank. Then, the second servo motor 29 is controlled by the PLC controller 17 to adjust the lateral position of the support seat 18 so that the impact point is directly below the impact head 16. Then, the mounting plate 10 is adjusted to the preset impact angle by the cylinder 12. Finally, the hydraulic cylinder 14 is activated to drive the impact head 16 to impact the water tank at the set angle and force. Throughout the testing process, all components work together to achieve the technical goals of adjustable impact angle, adjustable impact point, and secure and reliable water tank clamping, significantly improving the comprehensiveness, accuracy, and repeatability of the automotive water tank impact resistance performance testing.

[0029] The working process of this equipment is as follows: First, the operator places the car water tank to be tested stably on the top of the support seat 18. Then, the PLC controller 17 is started to control the operation of the two sets of first servo motors 22 on the front end and the right outer wall of the support seat 18 respectively. The two sets of first servo motors 22 synchronously drive the bidirectional screws 21 inside the first mounting groove 19 and the second mounting groove 20 to rotate. Since the threads on both sides of the bidirectional screws 21 rotate in opposite directions, the two sets of L-shaped plates 23 symmetrically arranged in each mounting groove move synchronously towards each other in the horizontal and vertical directions until they are tightly clamped and limited from the four sides of the water tank. Next, the operator screws 25 connected to the top threads of each L-shaped plate 23 respectively. Under the precise guidance of the guide rod 26, the pressure plate 24 is pushed vertically downward, so that the silicone anti-slip pad at the bottom of the pressure plate 24 is tightly pressed against the top edge of the water tank, thereby forming a three-dimensional fixed system that supports the bottom of the water tank, clamps it laterally, and presses it at the top, ensuring that the water tank will not move up and down, lift its edges, or shift as a whole during subsequent impacts. After clamping is completed, the PLC controller 17 starts the second servo motor 29 on the outer right side of the work frame 1. The second servo motor 29 drives the threaded rod 28 inside the first transverse groove 27 to rotate, thereby causing the bearing seat 18 to slide laterally along the first transverse groove 27. At the same time, the bottom end of the bearing seat 18 slides and engages with the stabilizing rods 31 in the front and rear sets of second transverse grooves 30 to ensure stable and accurate lateral displacement until the water tank is adjusted to be directly below the impact head. Then the impact angle is set. The PLC controller 17 controls the cylinder 12 installed on one of the first fixed rods 4 to move. The output end of the cylinder 12 pushes or pulls the telescopic rod 13. The telescopic rod 13 drives the rotating shaft 11 to slide along the arc groove 9 on the arc plate 8. Since the bottom end of the rear end of the mounting plate 10 is rotatably connected to the first transverse plate 6, the movement of the rotating shaft 11 forces the mounting plate 10 to tilt and deflect around the hinge point of the first transverse plate 6, thereby accurately adjusting the tilt angle of the mounting plate and the front hydraulic cylinder 14 to simulate the oblique impact conditions in different directions during actual driving. After the angle and position are adjusted, the PLC controller 17 controls the hydraulic cylinder 14 to move. The output end of the hydraulic cylinder 14 quickly pushes the mounting block downward along the front slide rail of the mounting plate 10, driving the impact head 16 connected to the front thread of the mounting block 15 to perform an impact test on the water tank at a preset angle and impact force. After the test is completed, the hydraulic cylinder 14 retracts to reset the impact head 16. The operator can readjust the lateral position of the bearing seat 18 or the impact angle of the mounting plate 10 through the PLC controller 17 according to the testing requirements, and replace the impact head 16 with different specifications to perform the next round of impact tests on different parts of the water tank or under different working conditions until all quality inspection items are completed.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. An impact testing machine for inspecting automotive water tanks, comprising a work frame (1), characterized in that: Support legs (2) are fixedly installed at the four corners of the bottom of the work frame (1). Support pads (3) are fixedly installed at the bottom of each set of support legs (2). A PLC controller (17) is fixedly installed on the outer right side of the work frame (1). A bearing seat (18) is provided at the bottom of the inside of the work frame (1). A clamping mechanism is installed on the bearing seat (18). An installation plate (10) is provided inside the work frame (1). A hydraulic cylinder (14) is installed at the top of the installation plate (10). An installation block (15) is slidably installed at the front end of the installation plate (10). An impact head (16) is installed at the front end of the installation block (15) by thread. The output end of the hydraulic cylinder (14) is fixedly connected to the installation block (15). An angle adjustment mechanism is installed inside the work frame (1).

2. The impact testing machine for inspecting automotive water tanks according to claim 1, characterized in that: The angle adjustment mechanism includes two first fixing rods (4) on both sides. Two sets of first fixing rods (4) are fixedly installed on both sides of the work frame (1). Two second fixing rods (5) are also fixedly installed on both sides of the work frame (1). The two sets of second fixing rods (5) are located above the first fixing rods (4). A first horizontal plate (6) is fixedly installed between the two sets of first fixing rods (4). The bottom end of the rear end of the mounting plate (10) is rotatably connected to the first horizontal plate (6).

3. The impact testing machine for inspecting automotive water tanks according to claim 2, characterized in that: The angle adjustment mechanism also includes a second horizontal plate (7), which is fixedly installed between two sets of second fixed rods (5). An arc plate (8) is fixedly installed on the second horizontal plate (7), and an arc groove (9) is provided on the arc plate (8). A rotating shaft (11) is rotatably installed on the top rear end of the mounting plate (10). The rear end of the rotating shaft (11) passes through the arc groove (9) and extends to the outside of the arc groove (9). A cylinder (12) is rotatably installed on one set of first fixed rods (4). A telescopic rod (13) is fixedly installed at the output end of the cylinder (12), and the other end of the telescopic rod (13) is rotatably connected to the rotating shaft (11).

4. The impact testing machine for inspecting automotive water tanks according to claim 1, characterized in that: The clamping mechanism includes a first mounting groove (19), which is laterally opened at the middle position of the top of the bearing seat (18). The top of the bearing seat (18) is also longitudinally provided with a second mounting groove (20). A bidirectional lead screw (21) is rotatably installed inside both the first mounting groove (19) and the second mounting groove (20). A first servo motor (22) is fixedly installed on the front end and the right outer wall of the bearing seat (18). The output ends of the two sets of first servo motors (22) are fixedly connected to the bidirectional lead screw (21) at the corresponding positions. Both the first mounting slot (19) and the second mounting slot (20) are symmetrically and slidably installed with L-shaped plates (23). Each set of L-shaped plates (23) is provided with a pressure plate (24). Each set of L-shaped plates (23) is vertically threaded with a screw (25) at the middle position of the top of the top of the L-shaped plates (23). The bottom end of each set of screws (25) is rotatably connected to the pressure plate (24) at the corresponding position. Each set of L-shaped plates (23) is vertically and slidably installed with guide rods (26) on both sides. The bottom end of each set of guide rods (26) is fixedly connected to the pressure plate (24) at the corresponding position.

5. An impact testing machine for inspecting automotive water tanks according to claim 4, characterized in that: Each pressure plate (24) is fixedly fitted with a silicone anti-slip pad at its bottom.

6. The impact testing machine for inspecting automotive water tanks according to claim 1, characterized in that: The work frame (1) has a first horizontal groove (27) at the middle of the bottom inside. A threaded rod (28) is rotatably installed inside the first horizontal groove (27). A second servo motor (29) is fixedly installed on the outer wall of the right side of the work frame (1). The output end of the second servo motor (29) is fixedly connected to the threaded rod (28). The bottom end of the bearing seat (18) is slidably connected to the first horizontal groove (27) and threadedly connected to the threaded rod (28).

7. An impact testing machine for inspecting automotive water tanks according to claim 6, characterized in that: The bottom of the work frame (1) is located at both ends of the first horizontal groove (27) and a second horizontal groove (30) is opened laterally. Each set of second horizontal grooves (30) is fixedly installed with a stabilizing rod (31). The bottom of the bearing seat (18) is slidably connected to the second horizontal groove (30) at the corresponding position and is slidably connected to the stabilizing rod (31) at the corresponding position.

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