An impact performance testing apparatus

Abstract

The utility model discloses a kind of impact performance test equipment, specifically related to test equipment technical field, including base, the base surface is fixedly installed with test plate, the upper of test plate is provided with the impact piece of lift activity, the bottom end of impact piece is installed with the impact mechanism of telescopic activity, the upper of impact piece is provided with equipment top plate, equipment top plate is connected with the limiting rod of several to the limiting of impact piece lift activity between base, equipment top plate is installed with the driving piece of driving impact piece and impact mechanism lift activity, driving piece and the top end between impact piece are connected with detachable docking piece.The utility model can adjust impact weight by counterweight plate, switch elastic and rigid two impact modes using limiting plug rod, reset spring under elastic mode makes impact head bounce to simulate dynamic impact, rigid mode can lock impact rod to realize static test, cover more extensive material test demand by switching two states.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and more specifically, to an impact performance testing device. Background Technology

[0002] In the field of materials mechanical property testing, impact performance is a crucial indicator of a material's impact resistance. Most existing impact performance testing equipment suffers from a single testing mode, capable only of performing rigid impact tests. This fails to simulate the dynamic bouncing impact scenarios materials might face in real-world applications, leading to discrepancies between test results and actual usage. Furthermore, adjusting the impact force and angle of traditional equipment is cumbersome, requiring multiple adjustments using tools, resulting in low testing efficiency. In addition, the equipment lacks flexibility in fixing the test object, making it difficult to adapt to objects of different sizes and shapes, and the disassembly and maintenance of the impact components are inconvenient, severely hindering the testing process. Therefore, there is an urgent need for an impact performance testing device that can achieve multiple impact modes, is easily adjustable, and has strong applicability. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an impact performance testing device, including a base, a test plate fixedly installed on the surface of the base, an impact member that can be raised and lowered on the test plate, an impact mechanism that can be telescopically moved at the bottom end of the impact member, a top plate above the impact member, and a plurality of limit rods connecting the top plate and the base to limit the raising and lowering movement of the impact member. A drive member that drives the impact member and the impact mechanism to raise and lower is installed on the top plate, and a detachable docking member is connected between the drive member and the top end of the impact member. The impact member is connected and separated from the drive member through the detachable docking member.

[0004] In a preferred embodiment, the test plate is provided with a plurality of screw holes evenly distributed therein, and a detachable positioning rod is inserted into the screw holes. The plurality of limiting rods are located on both sides of the test plate respectively.

[0005] In a preferred embodiment, the impact member includes a first plate located below the docking member and a second plate located below the first plate. A plurality of limiting tubes fitted around the limiting rod are fixedly embedded on both the first plate and the second plate. A connecting rod connects the two ends of the first plate and the second plate.

[0006] In a preferred embodiment, at least two screws are mounted on the upper surface of the second plate, and a plurality of detachable counterweight plates are sleeved on the outside of the screws. Bolts are provided on the top of the counterweight plates and are sleeved on the outside of the screws. A through hole is opened in the middle of the counterweight plate.

[0007] In a preferred embodiment, the impact mechanism includes an impact tube fixed in the middle of the lower surface of the second plate, an impact rod extending downward is inserted into the impact tube, the impact rod moves telescopically within the impact tube, an impact head is installed at the bottom end of the impact rod, the outer diameter of the impact head is larger than the outer diameter of the impact tube, and a telescopic return spring is connected between the surface of the impact head located at the edge of the impact rod and the lower surface of the second plate.

[0008] In a preferred embodiment, a positioning screw tube is also installed on the upper surface of the second plate. When the counterweight plates are stacked on the upper surface of the second plate, the positioning screw tube is located inside the through hole. A limiting rod that penetrates the second plate and extends into the impact tube is inserted into the positioning screw tube.

[0009] When limiting the impact rod and impact head, the bottom end of the limiting rod abuts against the top end of the impact rod.

[0010] In a preferred embodiment, the drive unit includes a lifting push rod mounted on the top plate of the equipment and a steering motor mounted on the bottom end of the output shaft of the lifting push rod.

[0011] In a preferred embodiment, the docking component includes an upper connecting plate fixed to the bottom end of the steering motor output shaft and a connecting post fixed to the upper surface of a first plate, with a lower connecting plate mounted on the top of the connecting post.

[0012] In a preferred embodiment, the lower connecting plate has two quarter-circle-shaped slots, which are symmetrically arranged and penetrate the lower connecting plate.

[0013] Two symmetrically arranged connecting blocks are installed at the bottom of the upper connecting plate. The thickness of the connecting blocks is the same as that of the lower connecting plate. The bottom of the two connecting blocks is equipped with a quarter-circle arc-shaped limiting strip, and the two limiting strips are symmetrically arranged.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model can adjust the impact weight through the counterweight plate and switch between elastic and rigid impact modes using the limit rod. In the elastic mode, the reset spring makes the impact head bounce to simulate dynamic impact, while in the rigid mode, the impact rod can be locked to achieve static testing.

[0016] The two practical docking components feature an arc-shaped slot structure for easy assembly and disassembly, and are guided by a limit rod for stable lifting and lowering of the impact component. The drive component allows for adjustment of the impact angle, and the test plate can hold different test objects. Operation is convenient and offers various testing modes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the impact component and impact mechanism of this utility model after they have fallen.

[0019] Figure 3 This is a schematic diagram of the impact component and impact mechanism of this utility model from another angle after they have fallen.

[0020] Figure 4 This is a cross-sectional view of the impact component and impact mechanism of this utility model;

[0021] Figure 5 For the present utility model Figure 4 Detailed diagram of point A in the middle.

[0022] Explanation of reference numerals in the attached drawings: 1. Base, 2. Test plate, 3. Equipment top plate, 4. Limiting rod, 5. Screw hole, 6. Positioning rod, 7. First plate, 8. Second plate, 9. Limiting tube, 10. Connecting rod, 11. Screw, 12. Counterweight plate, 13. Bolt, 14. Through hole, 15. Impact tube, 16. Impact rod, 17. Impact head, 18. Return spring, 19. Positioning screw tube, 20. Limiting insert rod, 21. Lifting push rod, 22. Steering motor, 23. Upper connecting plate, 24. Connecting column, 25. Lower connecting plate, 26. Slot, 27. Connecting block, 28. Limiting strip. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0024] like Figure 1-5 An impact performance testing device is shown, including a base 1, a test plate 2 fixedly mounted on the surface of the base 1, an impact member that can be raised and lowered above the test plate 2, an impact mechanism that can be telescopically moved at the bottom end of the impact member, a top plate 3 above the impact member, a plurality of limit rods 4 connecting the top plate 3 and the base 1 to limit the raising and lowering movement of the impact member, a drive member that drives the impact member and the impact mechanism to raise and lower on the top plate 3, a detachable docking member connecting the drive member and the top end of the impact member, and the impact member being connected and separated from the drive member through the detachable docking member;

[0025] Based on the above, the base 1 serves as the basic support, the test plate 2 fixes the object to be tested, and the lifting push rod 21 in the drive component drives the impact component to rise and fall along the limiting rod 4 through the docking part. The upper connecting plate 23 and the limiting strip 28 of the docking part engage with the slot 26 of the lower connecting plate in a quarter-circle arc, and can be locked or separated after rotation, realizing the quick assembly and disassembly of the impact component. The limiting rod 4 cooperates with the limiting tube 9 of the impact component to limit the horizontal displacement of the impact component and ensure that the straightness error of the lifting trajectory is small.

[0026] The test plate 2 has a number of screw holes 5 evenly distributed on it. A detachable positioning rod 6 is inserted into the screw holes 5. A number of limiting rods 4 are located on both sides of the test plate 2.

[0027] Based on the above, the screw holes 5 of the test plate 2 are distributed in a matrix. After the positioning rods 6 are inserted into the screw holes 5, the test object is fixed by the friction of the threads. The number and position of the positioning rods 6 can be freely controlled according to the size of the impact test product, so as to facilitate the limiting and fixing of different test objects, and the versatility is strong. The limiting rods 4 are symmetrically installed on both sides of the test plate 2 and welded to the top plate 3 of the equipment to form a vertical guide rail. The limiting tube 9 of the impact component slides along the rail.

[0028] The impact component includes a first plate 7 located below the docking component and a second plate 8 located below the first plate 7. Several limiting tubes 9 are fixedly embedded on the first plate 7 and the second plate 8, which are sleeved outside the limiting rod 4. A connecting rod 10 is connected between the two ends of the first plate 7 and the second plate 8.

[0029] Based on the appeal, the first plate 7 and the second plate 8 are welded into a rigid frame by the connecting rod 10, and the limiting tube 9 is interference-fitted into the plate body, forming a sliding pair with the limiting rod 4. When the driving component drives the first plate 7 to rise and fall, the second plate 8 moves synchronously through the connecting rod 10, and the limiting tube 9 slides on the limiting rod 4 to ensure that the parallelism error of the two plates is small;

[0030] Furthermore, the frame structure of the connecting rod 10 improves the overall rigidity of the impact component and prevents deformation during lifting and lowering; the precise cooperation between the limiting tube 9 and the limiting rod 4 improves the repeatability of the impact component's lifting and lowering positioning accuracy and ensures the consistency of test data.

[0031] At least two screws 11 are installed on the upper surface of the second plate 8. Several detachable counterweight plates 12 are sleeved on the outside of the screws 11. Bolts 13 are provided on the top of the counterweight plates 12 and are sleeved on the outside of the screws 11. A through hole 14 is opened in the middle of the counterweight plate 12.

[0032] Based on the above, the screw 11 is welded to the upper surface of the second plate 8, and the screw 11 is fitted into the through hole 14 of the counterweight plate 12 and tightened by bolts 13. The total weight of the impact component is adjusted by increasing or decreasing the number of counterweight plates 12, thereby changing the impact kinetic energy.

[0033] Furthermore, the gradient adjustment design of the counterweight plate 12 makes the impact force adjustable to meet the testing needs of different materials; the bolt 13 fixing method ensures that the counterweight plate 12 does not shift during the impact process, ensuring high safety.

[0034] The impact mechanism includes an impact tube 15 fixed in the middle of the lower surface of the second plate 8. An impact rod 16 extending downward is inserted into the impact tube 15. The impact rod 16 moves telescopically within the impact tube 15. An impact head 17 is installed at the bottom end of the impact rod 16. The outer diameter of the impact head 17 is larger than the outer diameter of the impact tube 15. A telescopic return spring 18 is connected between the surface of the impact head 17 located at the edge of the impact rod 16 and the lower surface of the second plate 8.

[0035] Based on the above, the impact tube 15 is welded and fixed to the second plate 8, and the impact rod 16 is inserted into the tube. When impacting, the impact rod 16 retracts and compresses the reset spring 18. After the impact force disappears, the reset spring 18 pushes the impact rod 16 to reset, thus achieving elastic impact.

[0036] The upper surface of the second plate 8 is also equipped with a positioning screw tube 19. When the counterweight plate 12 is stacked on the upper surface of the second plate 8, the positioning screw tube 19 is located inside the through hole 14. A limiting rod 20 that penetrates the second plate 8 and extends into the impact tube 15 is inserted into the positioning screw tube 19.

[0037] When the impact rod 16 and the impact head 17 are limited, the bottom end of the limiting rod 20 abuts against the top end of the impact rod 16;

[0038] Based on the above, the positioning screw tube 19 is welded to the second plate 8 and located at the center of the through hole 14 of the counterweight plate 12. The limiting rod 20 is screwed into the screw tube, with its bottom end extending into the impact tube 15. When the limiting rod 20 is screwed in, its bottom end presses against the top of the impact rod 16, restricting the retraction of the impact rod 16. At this time, the return spring 18 is in a compressed state but does not participate in the force, forming a rigid impact.

[0039] The driving component includes a lifting push rod 21 mounted on the top plate 3 of the equipment and a steering motor 22 mounted on the bottom end of the output shaft of the lifting push rod 21;

[0040] Based on the above, the lifting push rod 21 is fixed to the top plate 3 of the equipment, and the output shaft is connected to the steering motor 22 through a flange. The lifting push rod 21 drives the steering motor 22 to lift and lower. When the motor output shaft rotates, it drives the impact member to rotate through the docking part, thus separating the impact member from the steering motor 22.

[0041] The docking component includes an upper connecting plate 23 fixed to the bottom end of the output shaft of the steering motor 22 and a connecting post 24 fixed to the upper surface of the first plate 7. A lower connecting plate 25 is installed at the top of the connecting post 24.

[0042] Based on the above, the upper connecting plate 23 is keyed to the output shaft of the steering motor 22, and the lower connecting plate 25 is welded to the first plate 7 via the connecting post 24. The limiting strip 28 at the bottom of the upper connecting plate 23 engages with the slot 26 of the lower connecting plate 25. After insertion, a 90° rotation will lock the connection, forming a circumferential lock. The arc-shaped locking structure enables tool-free quick assembly and disassembly, improving efficiency compared to the traditional bolt 13 connection. The circumferential locking design ensures no relative rotation during impact.

[0043] The lower connecting plate 25 has two quarter-circle-shaped slots 26, which are symmetrically arranged and penetrate the lower connecting plate 25.

[0044] Two symmetrically arranged connecting blocks 27 are installed at the bottom of the upper connecting plate 23. The thickness of the connecting blocks 27 is the same as the thickness of the lower connecting plate 25. The bottom of the two connecting blocks 27 is equipped with a quarter-circle arc-shaped limiting strip 28, and the two limiting strips 28 are symmetrically arranged.

[0045] Based on the above, the slot 26 of the lower connecting plate 25 cooperates with the limiting strip 28 of the upper connecting plate 23. During installation, the limiting strip 28 is inserted into the slot 26, and the upper connecting plate 23 is rotated 90°, so that the limiting strip 28 is locked into the bottom of the slot 26, forming a mechanical lock; during disassembly, it can be separated by rotating it 90° in the opposite direction.

[0046] Based on the above, the impact mechanism has two states, specifically:

[0047] In state one, the limiting rod 20 is not inserted into the positioning screw tube 19, that is, the top of the limiting rod 20 is higher than the upper surface of the positioning screw tube 19 and does not contact the impact rod 16; the return spring 18 is naturally connected to the edge of the impact head 17 and the lower surface of the second plate 8, and is in a free extension and retraction state.

[0048] When the impact component drives the impact mechanism to fall, the impact head 17 contacts the surface of the object under test. After receiving the reaction force, the impact rod 16 retracts upward within the impact tube 15, compressing the return spring 18. When the impact force disappears, the return spring 18 releases its elastic potential energy, pushing the impact rod 16 and the impact head 17 downward to reset, forming a bouncing action. At this time, the impact mechanism can bounce 2-3 times on the surface of the object under test, simulating a dynamic impact scenario. This is suitable for scenarios that require testing the resistance of materials to repeated impacts, such as car bumpers and building panels.

[0049] In state two, the limiting rod 20 is screwed downward through the positioning screw tube 19, and its bottom end abuts against the top of the impact rod 16, restricting the extension and retraction of the impact rod 16 in the impact tube 15. The return spring 18 is pressed against the impact rod 16 and cannot produce elastic deformation.

[0050] When the impact component drives the impact mechanism to fall, after the impact head 17 contacts the surface of the object to be tested, the impact rod 16 cannot retract due to the obstruction of the limiting rod 20, and the return spring 18 does not participate in the force. At this time, the impact mechanism completes a single impact in a rigid state, and the impact head 17 remains in a downward state without bouncing, realizing static impact force testing. This is suitable for scenarios that require testing the resistance of materials to a single strong impact, such as safety helmets and armor plates.

[0051] Based on the above, by switching between the two states, dynamic bouncing impact and static rigid impact can be simulated, covering a wider range of material testing needs.

[0052] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An impact performance testing device, characterized in that, The device includes a base, on which a test plate is fixedly mounted. Above the test plate is a movable impact component that can be raised or lowered. At the bottom of the impact component is a telescopic impact mechanism. Above the impact component is a top plate. Several limit rods are connected between the top plate and the base to limit the raising and lowering movement of the impact component. A drive component is mounted on the top plate to move the impact component and the impact mechanism up and down. A detachable connector is connected between the drive component and the top of the impact component. The impact component can be connected to and separated from the drive component through the detachable connector.

2. The impact performance testing equipment according to claim 1, characterized in that: The test plate has several screw holes evenly spaced, and a detachable positioning rod is inserted into each screw hole. Several limiting rods are located on both sides of the test plate.

3. The impact performance testing equipment according to claim 1, characterized in that: The impact component includes a first plate located below the docking component and a second plate located below the first plate. Several limiting tubes are fixedly embedded on both the first and second plates and are sleeved outside the limiting rod. A connecting rod connects the two ends of the first and second plates.

4. The impact performance testing equipment according to claim 3, characterized in that: At least two screws are installed on the upper surface of the second plate. Several detachable counterweight plates are sleeved on the outside of the screws. Bolts are provided on the top of the counterweight plates and are sleeved on the outside of the screws. A through hole is opened in the middle of the counterweight plate.

5. The impact performance testing equipment according to claim 4, characterized in that: The impact mechanism includes an impact tube fixed in the middle of the lower surface of the second plate, an impact rod extending downward is inserted into the impact tube, the impact rod moves telescopically within the impact tube, an impact head is installed at the bottom end of the impact rod, the outer diameter of the impact head is larger than the outer diameter of the impact tube, and a telescopic return spring is connected between the surface of the impact head located at the edge of the impact rod and the lower surface of the second plate.

6. The impact performance testing equipment according to claim 5, characterized in that: The upper surface of the second plate is also equipped with a positioning screw tube. When the counterweight plates are stacked on the upper surface of the second plate, the positioning screw tube is located inside the through hole. A limiting rod that penetrates the second plate and extends into the impact tube is inserted into the positioning screw tube. When limiting the impact rod and impact head, the bottom end of the limiting rod abuts against the top end of the impact rod.

7. The impact performance testing equipment according to claim 3, characterized in that: The drive unit includes a lifting push rod mounted on the top plate of the equipment and a steering motor mounted on the bottom end of the output shaft of the lifting push rod.

8. The impact performance testing equipment according to claim 7, characterized in that: The docking component includes an upper connecting plate fixed to the bottom end of the output shaft of the steering motor and a connecting post fixed to the upper surface of the first plate, with a lower connecting plate installed at the top of the connecting post.

9. The impact performance testing equipment according to claim 8, characterized in that: The lower connecting plate has two quarter-circle-shaped slots, which are symmetrically arranged and penetrate through the lower connecting plate. Two symmetrically arranged connecting blocks are installed at the bottom of the upper connecting plate. The thickness of the connecting blocks is the same as that of the lower connecting plate. The bottom of the two connecting blocks is equipped with a quarter-circle arc-shaped limiting strip, and the two limiting strips are symmetrically arranged.

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