SHPB (split Hopkinson pressure bar) experimental concrete block test pattern recovery device

Abstract

The utility model discloses an SHPB (split Hopkinson pressure bar) experiment concrete block test pattern recovery device, which relates to the technical field of concrete block testing, and is characterized in that a recovery box is made of metal materials, and observation windows containing glass are formed in the center of the upper surface and the center of the side surface, so that a high-speed camera can be conveniently placed to shoot and observe an experiment; meanwhile, the two glass plates are small in area and low in price, great financial resources are not consumed even if the glass plates are scratched by splashing fragments and replaced, the use cost is low, fixing of the glass can be relieved by rotating the two rotating handles to drive the baffles to move out of the side faces of the glass plates, and the glass plates are easy to replace; when a user puts concrete blocks into the drawer from the opening of the drawer, as the height of the drawer is larger than the length of the concrete blocks, after an experiment is finished, the concrete blocks can fall on the drawer to be recycled together with broken blocks, the concrete blocks do not need to be taken out after the upper cover is opened, and operation steps are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete testing, in particular to a SHPB experimental concrete block test sample recovery device. Background Art

[0002] During the Split Hopkinson Bar (SHPB) experiment, as the speed increases, the specimen is broken and scattered everywhere. The debris of the specimen cannot be collected, which makes it difficult to further analyze the fragmentation and fractal shape of the specimen. At the same time, when using a high-speed camera during the experiment, the scattered debris of the specimen may damage the camera lens, thus requiring the use of a recovery protection device during the implementation.

[0003] For example, the patent website discloses a transparent protective cover for collecting SHPB experimental samples (publication number: CN212110884U). The glass cover of this device is a whole piece of glass, but during the experiment, flying fragments will hit the glass cover, thereby scratching the glass cover or the glass cover. In order to avoid the scratched parts affecting the observation of the high-speed camera, the entire glass cover and the glass cover need to be replaced. However, glass is expensive, which leads to an increase in the cost of using this device. During the experiment, the concrete block is incompletely broken due to weak force, and the main body of the concrete block still remains in the device. In addition, the drawer height of this device is low, resulting in the concrete block being unable to be moved out with the drawer. It can only be taken out by removing the upper glass cover, which is very troublesome. Therefore, those skilled in the art have proposed an SHPB experimental concrete block test sample recovery device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a SHPB experimental concrete block test sample recovery device, which solves the problems in the above background.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a SHPB experimental concrete block test sample recycling device, comprising a metal recycling box, wherein observation windows are provided at the center of the upper surface and the center of the rear surface of the recycling box, a glass groove is provided at the port of each observation window, and a glass plate adapted thereto is provided in each glass groove, two inner cavities are provided in the box plate of the recycling box corresponding to the side of each observation window, a screw is rotatably installed in each inner cavity, and a threaded seat adapted thereto is provided on each screw, a strip groove communicating with the inner cavity is provided on one side of each inner cavity on the surface of the recycling box, a mounting block extending to the outside through the corresponding strip groove is installed on the side of each threaded seat, a baffle is provided on the side of each mounting block above the adjacent glass plate, and one end of each inner cavity extends to the outside of the recycling box and is provided with a rotary handle.

[0006] As a further technical solution of the present invention, an outlet is provided on the front surface of the recycling box, and a drawer adapted to the outlet and having an opening on the side is provided inside the recycling box, and a side panel adapted to the drawer is hinged at the bottom of the opening port.

[0007] As a further technical solution of the present invention, two card slots are opened on the side of the drawer corresponding to the side of the side panel, and a cavity is opened on one side of each card slot of the side panel, and a limit plate is set in each of the cavities. A card extending into the nearest card slot and adapted to it is installed in the center of the side of each limit plate, and a spring is set on the other side of the limit plate inside each cavity.

[0008] As a further technical solution of the present invention, a central groove is opened between the two cavities inside the side panel, a winding rod is rotatably installed in the winding rod, and a pull rope with an end extending into the central groove and fixedly connected to the winding rod is installed in the center of the other side of each limit plate. One end of the winding rod extends to the outside of the side panel and is installed with a knob.

[0009] As a further technical solution of the present invention, a first circular opening is opened on both sides of the recycling box on one side of the drawer, a second circular opening is opened on both sides of the drawer on one side of each first circular opening aligned with it, and a rectangular opening is opened on the rear surface of the drawer on one side of the observation window on the rear surface of the recycling box to be aligned with it, and a handle is installed on the side of the side panel on the side where the knob is obtained.

[0010] As a further technical solution of the present invention, two inclined lighting lamps are provided on the inner wall of the recycling box above the drawer, and the outer surface of each lighting lamp is covered with a glass cover.

[0011] As a further technical solution of the present invention, the height of the drawer is greater than the length of the concrete block.

[0012] Beneficial effects

[0013] The utility model provides a SHPB experimental concrete block test sample recovery device. Compared with the existing technology, it has the following advantages:

[0014] 1. A SHPB experimental concrete block test sample recycling device. The recycling box of this device is made of metal material. At the same time, there are glass observation windows in the center of the upper surface and the center of the side, which are convenient for placing high-speed cameras to film and observe the experiment. At the same time, the two glass plates are small in area and low in price. Even if they are scratched by flying fragments, it will not cost a lot of money to replace them. Therefore, the cost of using this device is low. At the same time, rotating the two handles to drive the baffle to move out of the side of the glass plate can release the fixation of the glass, making the replacement of the glass plate simple and convenient for users to operate.

[0015] 2. A SHPB experimental concrete block test sample recovery device. This device is also provided with a drawer with a rotatable side panel. The user can put the concrete block into the drawer opening. At the same time, since the drawer height is greater than the length of the concrete block, when the experiment is completed, the concrete block can be allowed to fall into the drawer and be recovered together with the broken pieces. There is no need to open the upper cover and then take out the concrete block, which reduces the operation steps and is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a SHPB experimental concrete block test sample recovery device;

[0017] Figure 2 A side view of a SHPB experimental concrete block test sample recovery device;

[0018] Figure 3 This is a schematic diagram of the working structure of a SHPB experimental concrete block test sample recovery device;

[0019] Figure 4 A cross-sectional view of a SHPB experimental concrete block test sample recovery device;

[0020] Figure 5 A longitudinal cross-sectional view of a SHPB experimental concrete block test sample recovery device;

[0021] Figure 6 A schematic diagram of the drawer structure of a SHPB experimental concrete block test sample recovery device;

[0022] Figure 7 A side panel cross-sectional view of a SHPB experimental concrete block test sample recovery device.

[0023] In the figure: 1. Recycling box; 2. Observation window; 3. Glass plate; 4. Inner cavity; 5. Screw; 6. Threaded seat; 7. Strip groove; 8. Mounting block; 9. Baffle; 10. Rotary handle; 11. Drawer; 12. Side panel; 13. Slot; 14. Cavity; 15. Limit plate; 16. Clamp; 17. Spring; 18. Center groove; 19. Winding rod; 20. Pull rope; 21. Knob; 22. First round opening; 23. Second round opening; 24. Rectangular opening; 25. Light; 26. Handle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-7 The utility model provides a technical solution for a SHPB experimental concrete block test sample recycling device: a SHPB experimental concrete block test sample recycling device, comprising a metal recycling box 1, an observation window 2 is provided at the center of the upper surface and the center of the rear surface of the recycling box 1, a glass groove is provided at the port of each observation window 2, and a glass plate 3 is provided in each glass groove to match it, two inner cavities 4 are provided in the box plate of the recycling box 1 on the side of each observation window 2, each inner cavity 4 is rotatably installed with a screw 5, and each screw 5 is provided with a threaded seat 6 that matches the inner cavity 4, the surface of the recycling box 1 is provided with a strip groove 7 connected to the inner cavity 4 on one side of each inner cavity 4, and the side of each threaded seat 6 is provided with a screw extending through the corresponding strip groove 7. The mounting blocks 8 extend to the outside, and the side surfaces of each mounting block 8 are provided with baffles 9 above the adjacent glass plates 3. One end of each inner cavity 4 extends to the outside of the recycling box 1 and is provided with a rotary handle 10. When replacing the glass plate 3, the two rotary handles 10 corresponding to the sides of the glass plate 3 are rotated to move the two threaded seats 6 away from the glass plate 3. Each moving threaded seat 6 drives the mounting block 8 to move out above the glass plate 3, and the limit on the glass plate 3 can be released. Then, the glass plate 3 is taken out of the glass groove, and a new glass plate 3 is placed in the glass groove. Then, the two rotary handles 10 are reversed to make the two threaded seats 6 approach the glass plate 3. Each threaded seat 6 drives the mounting block 8 to move above the glass plate 3, and the glass plate 3 can be limited. The replacement is completed, the operation is simple, and it is convenient for the staff to operate.

[0026] See also Figure 1 、 Figure 3 and Figure 6-7, an outlet is provided on the front surface of the recycling box 1, and a drawer 11 is provided inside the recycling box 1, which is adapted to the outlet and has an opening on the side. The bottom of the opening port of the drawer 11 is hinged with a side panel 12 adapted thereto. Two card slots 13 are provided on the side of the drawer 11 corresponding to the side of the side panel 12. A cavity 14 is provided on one side of each card slot 13 of the side panel 12, and a limit plate 15 is provided in each cavity 14. A card 16 extending into the nearest card slot 13 and adapted thereto is installed at the center of the side of each limit plate 15. A spring 17 is provided on the other side of the limit plate 15 inside each cavity 14. A center groove 18 is provided between the two cavities 14 inside the side panel 12, and a winding rod 19 is rotatably installed in the winding rod 19. The center of the other side of each limit plate 15 is installed with an end extending to the center A pull rope 20 is fixedly connected to the winding rod 19 in the core groove 18, and one end of the winding rod 19 extends to the outside of the side panel 12 and is installed with a knob 21. A handle 26 is installed on the side of the side panel 12 at one side of the knob 21. The height of the drawer 11 is greater than the length of the concrete block. Rotating the knob 21 drives the winding rod 19 to rotate. The rotating winding rod 19 wraps around the two pull ropes 20, thereby pulling the two limit plates 15 closer to each other. Each moving limit plate 15 compresses the spring 17 and also drives the card 16 to move out of the card slot 13 into the cavity 14, thereby releasing the fixation of the side panel 12. Then, the drawer 11 is opened around the hinge, and the concrete block can be placed in the box. After the experiment, the concrete block falls into the drawer 11, and the drawer 11 is pulled out, and then the concrete block and its fragments in the drawer 11 can be recovered.

[0027] See also Figure 1-6 , both sides of the recycling box 1 are provided with a first circular opening 22 on one side of the drawer 11, and both sides of the drawer 11 are provided with a second circular opening 23 aligned with the first circular opening 22 on one side thereof, and the rear surface of the drawer 11 is provided with a rectangular opening 24 aligned with the observation window 2 on the rear surface of the recycling box 1. When in use, the two impact rods are respectively inserted into the recycling box 1 from the two first circular openings 22 and the second circular openings 23 until the two second circular openings 23 clamp the concrete block, and the rectangular opening 24 facilitates side high-speed camera shooting.

[0028] See also Figure 4 Two inclined lighting lamps 25 are correspondingly provided on the inner wall of the recycling box 1 above the drawer 11. The outer surface of each lighting lamp 25 is covered with a glass cover. The lighting lamp 25 is used to illuminate the recycling box 1, and the glass cover is used to protect the lighting lamp 25.

[0029] The working principle of the utility model is as follows: rotating the knob 21 drives the winding rod 19 to rotate, and the rotating winding rod 19 winds the two pull ropes 20, thereby pulling the two limit plates 15 closer to each other. Each moving limit plate 15 compresses the spring 17 and also drives the clamping piece 16 to move out of the clamping groove 13 and into the cavity 14, thereby releasing the fixation of the side plate 12. Then, the drawer 11 is opened around the hinge. The staff puts the concrete block into the recycling box 1 from the opening so that it is between the two second circular openings 23, and does not allow the lower surface of the concrete block to contact the upper surface of the drawer 11. Then, the two impact rods are inserted into the recycling box 1 from the two first circular openings 22 and the second circular openings 23 respectively until the two second circular openings 23 clamp the concrete block. Then, the side plates 12 are rotated in the opposite direction around the hinge so that the two clamping grooves 13 are aligned with the two clamping pieces 16. The knob 21 is released, and then the two springs 17 rebound and drive the limit plates 15 to restore their positions, thereby driving the two clamping pieces 16 to be inserted into the two clamping grooves 13 respectively, and the side plates 12 are fixed again.

[0030] During the process, high-speed cameras can be placed directly below the upper glass plate 3 and on one side of the side glass plate 3. Then, the concrete block is tested. The concrete block will break during the test, and the broken pieces will fall into the drawer 11. The two high-speed cameras can film the test process from above and from the side. Then, the two impact columns are separated, and the concrete block will fall into the drawer 11. The drawer 11 is pulled out, and the concrete block and its broken pieces in the drawer 11 can be recovered.

[0031] During the test, broken pieces may hit the glass plate 3, which may scratch the glass plate 3 and need to be replaced to avoid affecting high-speed close-up shooting. Rotate the two handles 10 corresponding to the side of the glass plate 3 to make the two threaded seats 6 move away from the glass plate 3. Each moving threaded seat 6 drives the mounting block 8 to move out from above the glass plate 3, so that the limit on the glass plate 3 can be released. Then, take the glass plate 3 out of the glass groove and put a new glass plate 3 into the glass groove. Then reverse the two handles 10 to make the two threaded seats 6 move closer to the glass plate 3. Each threaded seat 6 drives the mounting block 8 to move above the glass plate 3, so that the glass plate 3 can be limited and the replacement is completed.

Claims

1. A SHPB experimental concrete block test sample recovery device, comprising a recovery box (1) made of metal material, characterized in that: The recycling box (1) is provided with an observation window (2) at the center of the upper surface and the center of the rear surface, and a glass groove is provided at the end of each observation window (2), and a glass plate (3) is provided in each glass groove to match it. Two inner cavities (4) are provided in the box plate of the recycling box (1) on the side of each observation window (2), and each inner cavity (4) is rotatably mounted with a screw rod (5), and each screw rod (5) is provided with a threaded seat (6) to match the inner cavity (4). The surface of the recycling box (1) is provided with a strip groove (7) connected to the inner cavity (4) on one side, and a mounting block (8) is installed on the side of each threaded seat (6) to extend to the outside through the corresponding strip groove (7), and a baffle (9) is provided on the side of each mounting block (8) above the adjacent glass plate (3). One end of each inner cavity (4) extends to the outside of the recycling box (1) and is provided with a rotary handle (10).

2. A SHPB experimental concrete block test sample recovery device according to claim 1, characterized in that: The front surface of the recycling box (1) is provided with an outlet, and the interior of the recycling box (1) is provided with a drawer (11) adapted to the outlet and provided with an opening on the side, and a side panel (12) adapted to the drawer (11) is hingedly connected to the bottom of the opening port.

3. A SHPB experimental concrete block test sample recovery device according to claim 2, characterized in that: The side of the drawer (11) is provided with two slots (13) corresponding to the side of the side plate (12); the side plate (12) is provided with a cavity (14) on one side of each slot (13); a limit plate (15) is provided in each of the cavities (14); a clamping member (16) extending into the nearest slot (13) and matching with the limit plate (15) is installed at the center of the side of each limit plate (15); and a spring (17) is provided inside each of the cavities (14) on the other side of the limit plate (15).

4. A SHPB experimental concrete block test sample recovery device according to claim 3, characterized in that: A central groove (18) is provided inside the side plate (12) between the two cavities (14), a winding rod (19) is rotatably installed in the central groove (18), a pull rope (20) is installed at the center of the other side surface of each of the limiting plates (15), the end of which extends into the central groove (18) and is fixedly connected to the winding rod (19), and one end of the winding rod (19) extends to the outside of the side plate (12) and is installed with a knob (21).

5. A SHPB experimental concrete block test sample recovery device according to claim 3, characterized in that: The recycling box (1) is provided with a first circular opening (22) on both sides of the drawer (11), and a second circular opening (23) aligned with the first circular opening (22) is provided on both sides of the drawer (11). The rear surface of the drawer (11) is provided with a rectangular opening (24) aligned with the observation window (2) on the rear surface of the recycling box (1), and a handle (26) is installed on the side of the side panel (12) on one side of the knob (21).

6. A SHPB experimental concrete block test sample recovery device according to claim 5, characterized in that: Two inclined lighting lamps (25) are correspondingly arranged on the inner wall of the recycling box (1) above the drawer (11), and the outer surface of each lighting lamp (25) is covered with a glass cover.

7. A SHPB experimental concrete block test sample recovery device according to claim 6, characterized in that: The height of the drawer (11) is greater than the length of the concrete block.

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