A protective device for hopkinson bar testing

Abstract

The utility model discloses a protective device for hopkinson test, including PVC box, the one side of PVC box is open, and the open side of PVC box is installed with sealing plate up and down, the middle part of two sides of PVC box and sealing board is all seted up to have perforation, the upper surface of PVC box is seted up with two through the jack -in -jacks of PVC box top, the inside activity of jack -in -jacks is inserted with plastic board, the inside of PVC box and jack -in -jacks corresponding is equipped with the sliding slot, and plastic board activity is inserted in the sliding slot. This protective device for hopkinson test, simple structure, through the both sides sliding setting plastic board in the inside of PVC box, not only can improve the service life of whole PVC box, can also reduce the cost, only needs to replace the plastic board of damaged and unable to use, simple operation, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of dynamic mechanical performance testing technology, specifically a protective device for Hopkinson's test. Background Technology

[0002] The split Hopkinson bar test is one of the most important and widely used techniques in the field of dynamic mechanics testing. It ingeniously utilizes the propagation of stress waves in an elastic bar to apply a compressive load with an extremely high strain rate to a small specimen sandwiched between it, and indirectly derives the dynamic stress-strain response of the specimen by measuring the strain wave signal on the bar.

[0003] Currently, in the split Hopkinson bar test, the sample is clamped between the incident bar and the transmission bar, meaning it is in contact with both bars simultaneously. When the projectile fired by the system impacts the incident bar at high speed, the incident bar transfers the impact force to the transmission bar through the sample. At this point, the sample breaks and scatters upon impact. To improve experimental safety, a protective cover is usually installed at the sample area to prevent the sample from scattering after breakage. Existing protective covers generally use a PVC cover with one movable side, with the sample installed through a movable side panel. However, after prolonged use, it has been found that the fragmentation of the sample causes severe damage to both sides of the cover (experiments show that the amount of fragmented sample scattering to the sides is far greater than the amount scattering in other directions), significantly reducing the lifespan of the entire PVC cover. This necessitates replacing the entire cover, increasing costs and making it inconvenient to use. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a protective device for Hopkinson's disease testing. The device has a simple structure and by sliding plastic plates on both sides inside the PVC box, it can not only improve the service life of the entire PVC box, but also reduce costs. Only damaged and unusable plastic plates need to be replaced. The operation is simple and convenient, and it can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective device for Hopkinson's disease testing, comprising a PVC box, one side of which is open, and a sealing plate is movably installed on the open side of the PVC box. A through hole is provided in the middle of both sides of the PVC box adjacent to the sealing plate. Two insertion holes penetrating the top of the PVC box are provided on the upper surface of the PVC box, and a plastic plate is movably inserted into the insertion hole.

[0006] As a preferred technical solution of this utility model, the PVC box body and the side corresponding to the sealing plate are provided with a limiting plate, and a movable groove is formed between the limiting plate and the PVC box body, and the sealing plate moves up and down through the movable groove.

[0007] As a preferred embodiment of this utility model, the upper side of the sealing plate is provided with a lifting plate.

[0008] As a preferred embodiment of this utility model, the lower end of the side of the PVC box corresponding to the perforation is provided with a wing plate, and the wing plate is provided with an installation groove.

[0009] As a preferred technical solution of this utility model, the PVC box body is provided with a sliding groove inside corresponding to the socket, and the plastic plate is movably inserted in the sliding groove.

[0010] As a preferred embodiment of this utility model, the top of the plastic plate is provided with a handle.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The protective device for Hopkinson's disease test exemplified by this utility model has a simple structure. By sliding plastic plates on both sides inside the PVC box, the service life of the entire PVC box can be improved, and the cost can be reduced. Only damaged and unusable plastic plates need to be replaced. The operation is simple and convenient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1 PVC box body, 2 perforation, 3 wing plate, 31 mounting groove, 4 limiting plate, 5 sealing plate, 51 lifting plate, 6 insertion hole, 7 plastic plate, 71 handle. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2This utility model provides a technical solution: a protective device for Hopkinson's disease testing, including a PVC box 1. One side of the PVC box 1 is open, and a sealing plate 5 is movably installed on the open side of the PVC box 1. Through holes 2 are opened in the middle of the two sides adjacent to the sealing plate 5 of the PVC box 1 for the insertion of the incident rod and the transmission rod. Two insertion holes 6 are opened on the upper surface of the PVC box 1, penetrating the top of the PVC box 1. A plastic plate 7 is movably inserted inside the insertion holes 6. When the sample breaks and splashes, the plastic plate 7 can temporarily shield the fragments splashing to both sides, and the PVC box 1 provides overall protection. When the plastic plate 7 is damaged and unusable, only the plastic plate 7 needs to be replaced; there is no need to replace the entire PVC box 1.

[0016] Furthermore, a limiting plate 4 is provided on the side of the PVC box 1 corresponding to the sealing plate 5. A movable groove is formed between the limiting plate 4 and the PVC box 1, and the sealing plate 5 moves up and down through the movable groove. Pulling out the sealing plate 5 facilitates the installation of the sample.

[0017] Furthermore, a lifting plate 51 is provided on the upper side of the sealing plate 5 to facilitate the up-and-down sliding of the sealing plate 5.

[0018] Furthermore, the lower side of the PVC box 1 corresponding to the perforation 2 is provided with a wing plate 3, and the wing plate 3 is provided with an installation groove 31 to facilitate the installation of the PVC box 1 onto the base guide rail.

[0019] Furthermore, the PVC box 1 has a sliding groove inside corresponding to the socket 6, and the plastic plate 7 is movably inserted in the sliding groove, which plays a positioning role for the plastic plate 7.

[0020] Furthermore, the top of the plastic plate 7 is provided with a handle 71 to facilitate lifting the plastic plate 7.

[0021] This utility model has a simple structure. By sliding plastic plates 7 on both sides inside the PVC box 1, the service life of the entire PVC box 1 can be improved, and the cost can be reduced. Only the damaged and unusable plastic plates 7 need to be replaced. The operation is simple and convenient.

[0022] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for Hopkinson's disease testing, comprising a PVC enclosure (1), characterized in that: The PVC box (1) has an open side, and a sealing plate (5) is installed on the open side of the PVC box (1) and moves up and down. A through hole (2) is opened in the middle of the two sides adjacent to the sealing plate (5). Two insertion holes (6) are opened on the upper surface of the PVC box (1) and pass through the top of the PVC box (1). A plastic plate (7) is inserted into the insertion hole (6).

2. The protective device for Hopkinson's disease testing according to claim 1, characterized in that: The PVC box (1) is provided with a limiting plate (4) on the side corresponding to the sealing plate (5). A movable groove is formed between the limiting plate (4) and the PVC box (1), and the sealing plate (5) moves up and down through the movable groove.

3. The protective device for Hopkinson's disease testing according to claim 2, characterized in that: The upper side of the sealing plate (5) is provided with a lifting plate (51).

4. The protective device for Hopkinson's disease testing according to claim 1, characterized in that: The PVC box (1) has a wing plate (3) at the lower end of the side corresponding to the perforation (2), and the wing plate (3) has an installation groove (31).

5. The protective device for Hopkinson's disease testing according to claim 1, characterized in that: The PVC box (1) has a sliding groove inside corresponding to the socket (6), and the plastic plate (7) is movably inserted in the sliding groove.

6. The protective device for Hopkinson's disease testing according to claim 1, characterized in that: The top of the plastic plate (7) is provided with a handle (71).

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