Material mechanics impact resistance experiment device

Abstract

The invention provides a material mechanics impact resistance experiment device, and relates to the technical field of mechanical impact, the material mechanics impact resistance experiment device comprises a base and a falling mechanism for suspending an impactor, the falling mechanism is mounted on the base, two groups of first sliding blocks relatively sliding on the base are arranged on the base, and first fixing rods are mounted on the two groups of first sliding blocks; the two groups of first sliding blocks slide relatively to clamp an object through the first fixing rod and suspend the object, and the falling mechanism can release an impact object to impact the object; when the impact test device is used, a tested material can be prevented from being supported and buffered at the moment of impact, so that the impacted material can directly bear all impact forces, and the accuracy of a test result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical impact experiments, in particular to a material mechanical impact resistance experiment device. Background Art

[0002] The material mechanics impact resistance test studies the mechanical response and impact resistance of different materials under impact. By simulating the impact conditions in actual working conditions, the material's failure form and energy absorption capacity are analyzed, and then the safety and reliability of the material in practical applications are evaluated.

[0003] Existing impact resistance test devices usually use a drop hammer impact or an iron ball impact. When conducting the experiment, the material is fixed on the support of the experimental device, and then the height or mass of the hammer or iron ball is adjusted to perform single or multiple impact tests on the material. During long-term use and observation, it is found that existing experimental materials are usually placed on the support of the experimental device. At this time, the material is in close contact with the support, resulting in the support absorbing some energy when the hammer or iron ball impacts the material, which affects the accuracy of the experimental results.

[0004] To this end, the present invention provides a material mechanics impact resistance test device. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a material mechanics impact resistance test device to solve the problem that the support may absorb energy during the material impact process.

[0006] Based on the technical problems existing in the background technology, the present invention proposes a material mechanics impact resistance experimental device, including a base and a falling mechanism for suspending an impactor, the falling mechanism is installed on the base, the base is provided with two groups of first sliding blocks that slide relatively on the base, the two groups of the first sliding blocks are both equipped with a first fixing rod, the two groups of the first sliding blocks slide relatively to each other to clamp an object through the first fixing rod and make the object suspended in the air, and the falling mechanism can release the impactor to impact the object.

[0007] Preferably, a first slide groove is provided on the base, a fixed block which divides the first slide groove equally is installed on the base, two first sliding blocks are slidably installed on both sides of the fixed block respectively, a bidirectional threaded rod which passes through the fixed block and the two first sliding blocks is rotatably installed on the base, and the bidirectional threaded rod is threadedly connected to the first sliding block.

[0008] Preferably, a first motor is installed on the base and connected to the end of the bidirectional threaded rod. The first motor can drive the bidirectional threaded rod to rotate and drive the two first sliding blocks to move closer to or away from each other through the threaded connection.

[0009] Preferably, a second fixing plate is connected to the first fixing rod, a rubber pad is installed on a side of the second fixing plate facing the fixing block, and a side of the rubber pad facing the fixing block is toothed.

[0010] Preferably, a fourth fixing plate is provided on both sides of the first fixing rod, and a C-shaped arc rod is annularly slidably installed on the fourth fixing plate, and the rotation axis of the arc rod is parallel to the horizontal line. The four arc rods on the two groups of first fixing rods can resist the objects clamped by the two first fixing rods and correct the objects in the middle of the four arc rods.

[0011] Preferably, a tension spring is connected between 3 and the arc-shaped rod, a pressure rod is installed at the upper end of the arc-shaped rod, and a top block is installed at the lower end of the arc-shaped rod, and a rubber suction cup is provided on the top block.

[0012] Preferably, a plurality of material discharge troughs are provided at the bottom of the base, and a brush plate that fits the bottom of the first slide trough is installed on the first sliding block.

[0013] Preferably, a second fixing rod is rotatably mounted on the base, and a second sliding groove capable of receiving the second fixing rod is provided on the base, and the second fixing rod can be received in the second sliding groove.

[0014] Preferably, the falling mechanism includes a fixed frame, a cover plate, a driving screw, a sliding plate, and an electromagnetic suction cup. The cover plate is installed on the base through the fixed frame. The screw is rotatably installed on both sides of the cover plate. A second motor that drives the screw to rotate is installed on the cover plate. The two ends of the sliding plate are respectively threadedly connected to the two screws. The electromagnetic suction cup is installed on the sliding plate, the scale plate is installed on the base, and the fifth fixed plate is installed on the sliding plate and points to the scale plate.

[0015] Preferably, a baffle surrounding the first slide groove is installed on the base, and a protective pad is installed on the inner wall of the baffle.

[0016] Compared with the prior art, the material mechanics impact resistance test device proposed by the present invention adopts the above technical solution and achieves the following technical effects:

[0017] When the present invention is used, the tested material can avoid support and buffering at the moment of impact, so that the impacted material can directly withstand all the impact forces, thereby improving the accuracy of the test results;

[0018] The present invention can place the material in a central position and perform a gravity impact test, thereby avoiding the problem of impact force deviation caused by an angle and improving the accuracy of the impact test;

[0019] The present invention can facilitate the replacement of the height and weight of the iron ball through the electromagnetic suction cup, thereby reducing the need to replace the corresponding clamps when replacing different iron balls in the traditional way, resulting in cumbersome operation processes, thereby improving the convenience during experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 It is a schematic diagram of the base structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0024] Figure 5 It is a schematic diagram of the arc rod structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the bottom surface structure of the base of the present invention.

[0026] In the figure: 1. base; 13. first slider; 14. first fixed rod; 16. first slide groove; 17. fixed block; 12. bidirectional threaded rod; 11. first motor; 15. second fixed plate; 8. rubber pad; 3. fourth fixed plate; 31. arc rod; 34. tension spring; 33. pressure rod; 32. top block; 9. rubber suction cup; 5. feed chute; 51. brush plate; 71. second fixed rod; 7. second slide groove; 2. fixed frame; 21. cover plate; 23. drive screw; 25. sliding plate; 26. electromagnetic suction cup; 41. scale plate; 4. fifth fixed plate; 6. baffle; 61. protective pad. DETAILED DESCRIPTION

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] Example

[0030] Please refer to Figure 1-Figure 6 The present invention proposes a material mechanics impact resistance experimental device, comprising a base 1 and a falling mechanism for suspending an impact object, the falling mechanism is installed on the base 1, and two groups of first sliders 13 that slide relatively on the base 1 are arranged on the base 1, and first fixing rods 14 are installed on the two groups of first sliders 13, and the two first sliders 13 can approach or move away from each other, and the two first sliders 13 can clamp the test object when they are close. The test object in the present invention is spherical, and the interval between the two first sliders 13 is reduced after the two groups of first sliders 13 slide relatively, and then the two sides of the object are clamped by the first fixing rod 14, so that the object is clamped in the air, and at the same time, the falling mechanism can release the impact object to impact the object through gravity acceleration, so that the bottom of the object has no supporting ability during the impact, and the object can be completely impacted by the impact object during the impact, so as to avoid errors caused by secondary impact caused by buffering of the bottom of the object after the impact or rebound of the object.

[0031] In a specific implementation manner, refer to Figure 3 , Figure 4 A first slide groove 16 is provided on the base 1, and a fixed block 17 is installed on the base 1. The fixed block 17 divides the first slide groove 16 into two areas. The first sliders 13 are slidably installed in the two areas and are located on both sides of the fixed block 17. A bidirectional threaded rod 12 is rotatably installed on the base 1, and both ends of the threaded rod are rotatably connected with the base 1 and the fixed block 17. The bidirectional threaded rod 12 passes through the two first sliders 13 respectively and is threadedly connected to the two first sliders 13. The two threads on the bidirectional threaded rod 12 correspond to the two first sliders 13 respectively. When the bidirectional thread rotates, it can drive the two first sliders 13 to approach or move away from each other. Further, a first motor 11 is installed on the base 1, and the first motor 11 is connected to one end of the bidirectional threaded rod 12. The first motor 11 can drive the bidirectional threaded rod 12 to rotate and drive the first slider 13 to move through the threaded connection.

[0032] In a specific implementation manner, refer to Figure 3 , Figure 4The first fixing rod 14 is connected with a second fixing plate 15, and a rubber pad 8 is installed on the side of the second fixing plate 15 facing the fixing block 17. The rubber has a certain elasticity. When the two second fixing plates 15 are close to each other to squeeze the objects, the rubber pad 8 can shrink inward to avoid the damage of the second fixing plates 15 due to squeezing. At the same time, the rubber pad 8 can increase the friction coefficient and improve the effect of clamping the objects. The side of the rubber pad 8 facing the fixing block 17 is tooth-shaped. On the first fixing rod 14, the second fixing plate 15 is erected to increase the clamping area of ​​the first fixing rod 14; when in use, the two second fixing plates 15 can clamp objects of various shapes.

[0033] In a specific implementation manner, refer to Figure 3 , Figure 4 , Figure 5 The fourth fixing plate 3 is provided on both sides of the first fixing rod 14, and a C-shaped arc rod 31 is annularly slidably installed on the fourth fixing plate 3. The arc rod 31 has an axis when sliding on the fourth fixing plate 3, and its axis is parallel to the horizontal plane. Two arc rods 31 are provided on both sides of a first fixing rod 14, and the two first fixing rods 14 have a total of four, and the four fixing rods will be arranged in the four corners of a rectangle. The four arc rods 31 on the two groups of first fixing rods 14 can resist the objects clamped by the two first fixing rods 14 and return the objects to the middle of the four arc rods 31; the object in the present invention is spherical, and when the object is clamped between the two first fixing rods 14, the object will squeeze the lower end of the arc rod 31, and the upper end of the arc rod 31 will protrude outward and resist the upper part of the object. The upper ends of the four arc rods 31 can allow the object to be returned to the center of the four arc rods 31, which can reduce the judgment of force decomposition during testing.

[0034] In a specific implementation manner, refer to Figure 5 A tension spring 34 is connected between the fourth fixed plate 3 and the arc rod 31, a pressure rod 33 is installed at the upper end of the arc rod 31, and a top block 32 is installed at the lower end of the arc rod 31, and a rubber suction cup 9 is provided on the top block 32; the tension spring 34 is always in a pulled-up state, and the two ends of the tension spring 34 are respectively connected to the fourth fixed plate 3 and the arc rod 31. When an object squeezes the bottom end of the arc rod 31, the tension state of the tension spring 34 will increase. After the collision test, the object is taken out, and under the action of the tension spring 34, the arc rod 31 will return to its position on the fourth fixed rod.

[0035] In a specific implementation manner, refer to Figure 4 , Figure 6, a plurality of material discharge chutes 5 are provided at the bottom of the base 1, and a brush plate 51 is installed on the first slider 13 to fit the bottom of the first slide chute 16; during the entire test, the impact may cause the material to break and splash, and fall on the upper surface of the base 1. When the first slider 13 moves, the debris may be squeezed between the first slider 13 and the base 1, causing sliding inconvenience, so the brush plate 51 is installed on the first slider 13 to clean the debris dropped on the base 1 through the material discharge chute 5.

[0036] In a specific implementation manner, refer to Figure 3 , Figure 6 The second fixing rod 71 is rotatably mounted on the base 1, and a second slide groove 7 for receiving the second fixing rod 71 is provided on the base 1, and the second fixing rod 71 can be received in the second slide groove 7. In the present invention, the second fixing rod 71 on the base 1 can be folded relative to the base 1, and after being folded and extended, the length or width of the force on the base 1 can be increased, thereby improving the stability of the support of the base 1.

[0037] In a specific implementation manner, refer to Figure 1 , Figure 2 The falling mechanism includes a fixed frame 2, a cover plate 21, a driving screw 23, a sliding plate 25, and an electromagnetic suction cup 26. The cover plate 21 is installed on the base 1 through the fixed frame 2. The screws are rotatably installed on both sides of the cover plate 21. A second motor for driving the screw 23 to rotate is installed on the cover plate 21. The two ends of the sliding plate 25 are respectively threadedly connected with the two screws. The electromagnetic suction cup 26 is installed on the sliding plate 25. The scale plate 41 is installed on the base 1. The fifth fixed plate 4 is installed on the sliding plate 25 and points to the scale plate 41. In the present invention, the sliding plate 25 is threadedly connected with the screw, the screw can drive the sliding plate 25 to rise and fall, the second motor can drive the screw to rotate, and the longitudinal sliding of the sliding plate 25 can drive the impactor on the electromagnetic suction cup 26 to reach a certain height. A scale on the scale plate 41 is specified by the fifth fixed plate 4 for observation, and then the impactor is released for testing.

[0038] In a specific implementation manner, refer to Figure 2 A baffle plate 6 surrounding the first chute 16 is installed on the base 1, and a protective pad 61 is installed on the inner wall of the baffle plate 6. In the present invention, the baffle plate 6 can block the debris splashed by the impact.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A material mechanics impact resistance test device, characterized in that: The invention comprises a base (1) and a falling mechanism for suspending an impactor, wherein the falling mechanism is mounted on the base (1), and the base (1) is provided with two groups of first sliding blocks (13) which slide relatively on the base (1), and first fixing rods (14) are mounted on the two groups of the first sliding blocks (13), and the two groups of the first sliding blocks (13) slide relatively to each other to clamp an object through the first fixing rod (14) and make the object suspended in the air, and the falling mechanism can release the impactor to impact the object.

2. The material mechanics impact resistance test device according to claim 1, characterized in that: The base (1) is provided with a first slide groove (16), a fixed block (17) which divides the first slide groove (16) into equal parts is installed on the base (1), two first sliding blocks (13) are slidably installed on both sides of the fixed block (17), and a bidirectional threaded rod (12) which passes through the fixed block (17) and the two first sliding blocks (13) is rotatably installed on the base (1), and the bidirectional threaded rod (12) is threadedly connected to the first sliding blocks (13).

3. The material mechanics impact resistance test device according to claim 1, characterized in that: A first motor (11) is mounted on the base (1) and is connected to the end of a bidirectional threaded rod (12); the first motor (11) can drive the bidirectional threaded rod (12) to rotate and drive two first sliders (13) to move closer to or farther from each other through a threaded connection.

4. The material mechanics impact resistance test device according to claim 2, characterized in that: The first fixing rod (14) is connected to a second fixing plate (15), a rubber pad (8) is installed on a side of the second fixing plate (15) facing the fixing block (17), and a side of the rubber pad (8) facing the fixing block (17) is toothed.

5. The material mechanics impact resistance test device according to claim 1, characterized in that: A fourth fixing plate (3) is provided on both sides of the first fixing rod (14), a C-shaped arc rod (31) is annularly slidably mounted on the fourth fixing plate (3), the rotation axis of the arc rod (31) is parallel to the horizontal line, and the four arc rods (31) on the two groups of first fixing rods (14) can resist the objects clamped by the two first fixing rods (14) and return the objects to the middle of the four arc rods (31).

6. The material mechanics impact resistance test device according to claim 5, characterized in that: A tension spring (34) is connected between the fourth fixing plate (3) and the arc-shaped rod (31); a pressure rod (33) is installed at the upper end of the arc-shaped rod (31); a top block (32) is installed at the lower end of the arc-shaped rod (31); and a rubber suction cup (9) is provided on the top block (32).

7. The material mechanics impact resistance test device according to claim 1, characterized in that: A plurality of material discharge troughs (5) are arranged at the bottom of the base (1), and a brush plate (51) that fits the bottom of the first slide groove (16) is installed on the first sliding block (13).

8. The material mechanics impact resistance test device according to claim 1, characterized in that: A second fixing rod (71) is rotatably mounted on the base (1); a second sliding groove (7) capable of receiving the second fixing rod (71) is provided on the base (1); and the second fixing rod (71) can be received in the second sliding groove (7).

9. The material mechanics impact resistance test device according to claim 1, characterized in that: The falling mechanism comprises a fixed frame (2), a cover plate (21), a driving screw rod (23), a sliding plate (25), and an electromagnetic suction cup (26); the cover plate (21) is mounted on the base (1) through the fixed frame (2); the screw rod (23) is rotatably mounted on both sides of the cover plate (21); a second motor (22) for driving the screw rod (23) to rotate is mounted on the cover plate (21); two ends of the sliding plate (25) are respectively threadedly connected to the two screw rods (23); the electromagnetic suction cup (26) is mounted on the sliding plate; the scale plate (41) is mounted on the base (1); and the fifth fixed plate (4) is mounted on the sliding plate and points to the scale plate (41).

10. The material mechanics impact resistance test device according to claim 1, characterized in that: A baffle (6) surrounding the first slide groove (16) is installed on the base (1), and a protective pad (61) is installed on the inner wall of the baffle (6).

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