A specimen fixing and mounting device for hopkinson bar test

Abstract

The application discloses a kind of specimen fixed mounting device for Hopkinson bar test, it is related to mechanics testing instrument field, comprising: protective box, the top of the protective box and one side wall are all provided with opening structure;First cover plate, the first cover plate is rotationally arranged on the inner side wall of protective box;Connecting assembly, the connecting assembly is rotationally connected with the end of first cover plate;Second cover plate.The application can open the first cover plate and the second cover plate, under the action of connecting rod, first connecting block and second connecting block, drive the limit ring to move, so that the limit ring moves to the outside of protective box, the installation and fixation of test piece are facilitated, cooperate with the positioning of test piece and limit ring between positioning assembly, after installation, the protective box is closed by the first cover plate and the second cover plate, in the process, under the action of connecting rod, first connecting block and second connecting block, so that the limit ring is between transmission rod and incident rod, during rotation, positioning assembly is away from test piece, to ensure that test work can be carried out normally.

Description

Technical Field

[0001] This invention relates to the field of mechanical testing instruments, and in particular to a specimen fixing and mounting device for Hopkinson bar testing. Background Technology

[0002] During the test, the sample is located between the two bars of a split Hopkinson bar. A pressure wave is generated by an accelerator hammer compressed by air. The pressure wave passes through the incident bar, part of which is reflected at the bar end, and the other part passes through the test sample to reach the transmission bar. By detecting the pressure wave of the transmission bar, data such as the strength of the material can be detected.

[0003] In the prior art, during the test, the large impact force on the specimen can cause the specimen to shift and fall off, resulting in the interruption of the test. At the same time, in order to ensure that the specimen is in the middle of the transmission rod and the incident rod, a specimen fixing and mounting device for the Hopkinson rod test is needed. Summary of the Invention

[0004] The purpose of this invention is to provide a specimen fixing and mounting device for Hopkinson bar testing, so as to solve the technical problems in the prior art.

[0005] This invention provides a specimen fixing and mounting device for the Hopkinson bar test, comprising:

[0006] The protective box has an opening structure on its top and one of its side walls;

[0007] The first cover plate is rotatably mounted on the inner side wall of the protective box;

[0008] A connecting assembly is rotatably connected to the end of the first cover plate;

[0009] The second cover plate is rotatably connected to the first cover plate via a connecting assembly;

[0010] Two fixing components are respectively disposed on two inner side walls of the protective box, and the two fixing components are used to fix the first cover plate and the second cover plate;

[0011] A limiting ring, wherein a rubber ring is provided on the inner sidewall of the limiting ring;

[0012] Two second connecting blocks are provided on the outer wall of the limiting ring;

[0013] Two connecting rods, one end of each connecting rod is rotatably connected to two second connecting blocks, and the other end of each connecting rod is rotatably connected to a first connecting block. The two first connecting blocks are fixed to a first cover plate and a second cover plate, respectively.

[0014] Two positioning components are provided, and each of the two positioning components is fixed to one of the two connecting rods.

[0015] Preferably, the positioning component includes:

[0016] The mounting block has a connection hole on its side wall;

[0017] A sliding rod, which is slidably disposed within a connecting hole;

[0018] A baffle is disposed at one end of the slide rod;

[0019] A connecting plate is provided at the other end of the slide rod, and a spring is provided on the side wall of the connecting plate, and the spring and the mounting block are fixed together.

[0020] Preferably, the connection component includes:

[0021] A connecting shaft is disposed on the side wall of the second cover plate;

[0022] A rubber sleeve is disposed on the outer wall of the connecting shaft;

[0023] A through hole is formed on the side wall of the first cover plate, and the rubber sleeve abuts against the inner wall of the through hole.

[0024] Preferably, the fixing component includes:

[0025] A support frame is installed on the inner side wall of the protective box;

[0026] Two mounting holes are provided on the two side walls of the support frame, and a first magnet is provided in each mounting hole;

[0027] Two mounting slots are respectively formed on the side walls of the first cover plate and the second cover plate, and a second magnet is provided in each mounting slot.

[0028] Preferred options also include:

[0029] Two blocks are provided on the two inner side walls of the protective box.

[0030] Preferred options also include:

[0031] Two round holes are respectively formed on the two side walls of the protective box;

[0032] Two connecting seats, each of which is disposed within one of two circular holes;

[0033] An incident rod and a transmission rod are provided, and the incident rod and the transmission rod are slidably connected to two connecting seats respectively.

[0034] Preferred options also include:

[0035] A handle is provided on the side wall of the second cover plate.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] This invention, through the design of a limiting ring, a first connecting block, a second connecting block, a first cover plate, a second cover plate, and a connecting rod, enables the following during use: opening the first and second cover plates allows the limiting ring to move outside the protective box under the action of the connecting rod, the first connecting block, and the second connecting block. This facilitates the installation and fixation of the specimen. The positioning component, in conjunction with the limiting ring, positions the specimen and the limiting ring. After installation, the protective box is closed by the first and second cover plates. During this process, the limiting ring is positioned between the transmission rod and the incident rod under the action of the connecting rod, the first connecting block, and the second connecting block. During rotation, the positioning component moves away from the specimen to ensure the normal operation of the test. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0040] Figure 2 This is a cross-sectional view of the protective box portion of the present invention;

[0041] Figure 3 This is a schematic diagram of the fixing strip and the second connecting block structure of the present invention;

[0042] Figure 4 This is the invention Figure 3 A magnified view of the structure at point A in the middle;

[0043] Figure 5 This is an exploded view of the connecting component of the present invention;

[0044] Figure 6 This is a schematic diagram of the positioning component structure of the present invention.

[0045] Figure label:

[0046] 1. Protective box; 2. Connecting seat; 3. Incident rod; 4. Transmission rod; 5. First cover plate; 6. Second cover plate; 7. Handle; 8. Stop block; 9. Round hole; 10. Support frame; 11. First connecting block; 12. Limiting ring; 13. Second connecting block; 14. First magnet; 15. Second magnet; 16. Mounting hole; 17. Mounting groove; 18. Connecting shaft; 19. Rubber sleeve; 20. Connecting rod; 21. Mounting block; 22. Baffle; 23. Slide rod; 24. Connecting plate; 25. Spring. Detailed Implementation

[0047] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0048] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0049] 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.

[0050] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] The following is combined Figures 1 to 6 As shown, an embodiment of the present invention provides a specimen fixing and mounting device for the Hopkinson bar test, comprising:

[0053] Protective box 1, with openings on the top and one of its side walls;

[0054] The first cover plate 5 is rotatably mounted on the inner wall of the protective box 1;

[0055] A connecting component is rotatably connected to the end of the first cover plate 5;

[0056] The second cover plate 6 is rotatably connected to the first cover plate 5 via a connecting assembly;

[0057] Two fixing components are respectively installed on the two inner side walls of the protective box 1. The two fixing components are used to fix the first cover plate 5 and the second cover plate 6.

[0058] Limiting ring 12, with a rubber ring provided on the inner side wall of the limiting ring 12;

[0059] Two second connecting blocks 13 are provided on the outer wall of the limiting ring 12;

[0060] Two connecting rods 20, one end of each connecting rod 20 is rotatably connected to two second connecting blocks 13 respectively, and the other end of each connecting rod 20 is rotatably connected to a first connecting block 11 respectively. The two first connecting blocks 11 are fixed to the first cover plate 5 and the second cover plate 6 respectively.

[0061] Two positioning components are fixed to two connecting rods 20 respectively.

[0062] The specimen is passed through the limiting ring 12, and the rubber ring on the limiting ring 12 is used to fix the specimen to the limiting ring 12. During the fixing of the first cover plate 5 and the second cover plate 6, under the action of gravity, the two connecting rods 20 on the limiting ring 12 are eventually in a horizontal and a vertical state, so that the limiting ring 12 is located between the transmission rod 4 and the incident rod 3, thus realizing the positioning of the specimen.

[0063] Furthermore, the positioning components include:

[0064] Mounting block 21, with connecting holes on its side wall;

[0065] Slide rod 23 is slidably disposed within the connecting hole;

[0066] Baffle 22 is disposed at one end of slide bar 23;

[0067] A connecting plate 24 is provided at the other end of the slide rod 23. A spring 25 is provided on the side wall of the connecting plate 24, and the spring 25 is fixed to the mounting block 21.

[0068] Pulling the baffle 22 causes the connecting plate 24 to move via the slide rod 23, stretching the spring 25. Through the action of the spring 25, in conjunction with the slide rod 23 and the two baffles 22, the specimen is positioned so that it is in the center of the limiting ring 12.

[0069] Furthermore, the connection components include:

[0070] Connecting shaft 18 is disposed on the side wall of the second cover plate 6;

[0071] Rubber sleeve 19 is disposed on the outer wall of the connecting shaft 18;

[0072] A through hole is provided on the side wall of the first cover plate 5, and the rubber sleeve 19 abuts against the inner wall of the through hole.

[0073] The friction between the rubber sleeve 19 and the first cover plate 5 makes it difficult for the first cover plate 5 and the second cover plate 6 to rotate, thus ensuring the stability of the specimen during movement.

[0074] Furthermore, the fixing components include:

[0075] Support frame 10 is installed on the inner side wall of protective box 1;

[0076] Two mounting holes 16 are provided on the two side walls of the support frame 10, and a first magnet 14 is provided in each mounting hole 16.

[0077] Two mounting slots 17 are respectively opened on the side walls of the first cover plate 5 and the second cover plate 6, and a second magnet 15 is provided in each mounting slot 17.

[0078] The first cover plate 5 and the second cover plate 6 are fixed by mutual attraction between the two first magnets 14 on the support frame 10 and the second magnets 15 on the first cover plate 5 and the second cover plate 6.

[0079] Furthermore, it also includes:

[0080] Two blocks 8 are installed on the two inner side walls of the protective box 1.

[0081] Furthermore, it also includes:

[0082] Two round holes 9 are respectively opened on the two side walls of the protective box 1;

[0083] Two connecting seats 2 are respectively set in two circular holes 9;

[0084] The incident rod 3 and the transmission rod 4 are slidably connected to the two connecting seats 2 respectively.

[0085] Furthermore, it also includes:

[0086] Handle 7 is located on the side wall of the second cover plate 6.

[0087] The specific working method is as follows: First, the specimen is passed through the limiting ring 12. The rubber ring on the limiting ring 12 secures the specimen to itself. Next, the baffle 22 is pulled. During this pulling, the sliding rod 23 moves the connecting plate 24, stretching the spring 25. The spring 25, in conjunction with the sliding rod 23 and the two baffles 22, positions the specimen, placing it in the center of the limiting ring 12. Then, the handle 7 rotates the first cover plate 5 and the second cover plate 6. The stop block 8 keeps the first cover plate 5 horizontal and fixed. The two first magnets 14 on the support frame 10 and the second magnets 15 on the first cover plate 5 and the second cover plate 6... The mutual adsorption between the rubber sleeve 19 and the first cover plate 5 and the second cover plate 6 is used to fix the first cover plate 5 and the second cover plate 6. The friction between the rubber sleeve 19 and the first cover plate 5 makes it difficult for the first cover plate 5 and the second cover plate 6 to rotate, thus ensuring the stability of the specimen during the movement. During the fixing of the first cover plate 5 and the second cover plate 6, under the action of gravity, the two connecting rods 20 on the limiting ring 12 are eventually in a horizontal and a vertical state, so that the limiting ring 12 is positioned between the transmission rod 4 and the incident rod 3, thus realizing the positioning of the specimen. During this process, when the connecting rod 20 rotates, the mounting block 21 on the connecting rod 20 rotates accordingly, so that the baffle 22 moves away from the limiting ring 12, thus avoiding the baffle 22 from affecting the normal operation of the test during the test.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A specimen fixing and mounting device for Hopkinson's bar test, characterized in that, include: The protective box (1) has an opening structure on its top and one of its side walls; The first cover plate (5) is rotatably mounted on the inner wall of the protective box (1); A connecting assembly is rotatably connected to the end of the first cover plate (5); The second cover plate (6) is rotatably connected to the first cover plate (5) via a connecting assembly; Two fixing components are respectively installed on the two inner side walls of the protective box (1), and the two fixing components are used to fix the first cover plate (5) and the second cover plate (6). A limiting ring (12) is provided with a rubber ring on its inner sidewall; Two second connecting blocks (13) are provided on the outer wall of the limiting ring (12); Two connecting rods (20), one end of each connecting rod (20) is rotatably connected to two second connecting blocks (13), and the other end of each connecting rod (20) is rotatably connected to a first connecting block (11). The two first connecting blocks (11) are fixed to a first cover plate (5) and a second cover plate (6) respectively. Two positioning components, each fixed to one of the two connecting rods (20); The positioning component includes: Mounting block (21), the side wall of which is provided with a connection hole; The slide rod (23) is slidably disposed in the connecting hole; A baffle (22) is provided at one end of a slide bar (23); A connecting plate (24) is provided at the other end of the slide rod (23). A spring (25) is provided on the side wall of the connecting plate (24), and the spring (25) is fixed to the mounting block (21).

2. The specimen fixing and mounting device for the Hopkinson bar test according to claim 1, characterized in that, The connection component includes: A connecting shaft (18) is disposed on the side wall of the second cover plate (6); A rubber sleeve (19) is provided on the outer wall of the connecting shaft (18); A through hole is provided on the side wall of the first cover plate (5), and the rubber sleeve (19) abuts against the inner wall of the through hole.

3. The specimen fixing and mounting device for the Hopkinson bar test according to claim 1, characterized in that, The fixing component includes: A support frame (10) is provided on the inner wall of the protective box (1); Two mounting holes (16) are provided on the two side walls of the support frame (10), and a first magnet (14) is provided in each mounting hole (16). Two mounting slots (17) are respectively opened on the side walls of the first cover plate (5) and the second cover plate (6), and a second magnet (15) is provided in each mounting slot (17).

4. The specimen fixing and mounting device for the Hopkinson bar test according to claim 3, characterized in that, Also includes: Two blocks (8) are provided on the two inner sidewalls of the protective box (1).

5. The specimen fixing and mounting device for the Hopkinson bar test according to claim 1, characterized in that, Also includes: Two round holes (9) are respectively opened on the two side walls of the protective box (1); Two connecting seats (2) are respectively disposed in two circular holes (9); An incident rod (3) and a transmission rod (4) are slidably connected to two connecting seats (2), respectively.

6. The specimen fixing and mounting device for the Hopkinson bar test according to claim 5, characterized in that, Also includes: A handle (7) is provided on the side wall of the second cover plate (6).

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