Protective device and test system

Abstract

The invention relates to the technical field of protection devices, and discloses a protection device and a test system.The protection device comprises a first barrier layer and a second barrier layer, and the first barrier layer is convexly provided with a plurality of first protrusions distributed at intervals; the second barrier layer is connected to one side, back to the first bulge, of the first barrier layer; the second barrier layer is filled with the first fluid, and the first fluid is the shear thickening fluid, so that the protection performance of the protection device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of protective devices, in particular to a protective device and a test system. BACKGROUND

[0002] In the operation process of nuclear power plants or other engineering construction, due to equipment failure, natural disasters and other reasons, failure of pressure-bearing components, rotating components and other components may produce flying objects, which will impact the surrounding safety and some important items, easily causing safety accidents, important item failure and other accidents, such as pipe rupture, leakage, and further triggering nuclear leakage and other disastrous consequences.

[0003] Therefore, the research of protective devices is of great significance, and the protective devices in the related art are mostly made of para-aramid synthetic fiber combined with steel plates, which has poor impact resistance and the protective performance of the protective device is difficult to meet the demand. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a protective device capable of improving the protective performance of the protective device.

[0005] The present application also provides a test system having the above protective device.

[0006] The protective device according to the first aspect of the present application comprises a first barrier layer and a second barrier layer, the first barrier layer is provided with a plurality of first protrusions distributed at intervals, the second barrier layer is connected to the side of the first barrier layer opposite to the first protrusions, and the second barrier layer is filled with a first fluid, and the first fluid is a shear thickening fluid.

[0007] The protective device according to the present application has at least the following beneficial effects: by providing a plurality of first protrusions distributed at intervals on the first barrier layer, a limiting space for the flying object to enter can be formed between adjacent first protrusions, so that the flying object can bounce between the outer walls of the first protrusions surrounding the limiting space, reducing the probability of the flying object bouncing out of the protective device after impacting the first barrier layer, and improving the protective performance of the protective device. By filling the second barrier layer with a first fluid, the first fluid is a shear thickening fluid, so that the viscosity and hardness of the first fluid can increase sharply under the impact of the flying object, which helps to absorb the energy of the flying object, so that the impact force of the flying object continues to decay, and the first fluid can automatically recover after being impacted by the flying object, which helps to improve the decay of the protective force of the protective device after being impacted by the flying object, and ensures the protective effect of the protective device.

[0008] The protective device according to the first aspect of the present application comprises a first barrier layer and a second barrier layer, the first barrier layer is provided with a plurality of first protrusions distributed at intervals; the second barrier layer is connected to the side of the first barrier layer opposite to the first protrusions; the second barrier layer is filled with a first fluid, and the first fluid is a shear thickening fluid.

[0009] According to some embodiments of the present application, the side of the first barrier layer opposite to the second barrier layer is also provided with a plurality of grooves, and the first protrusions and the grooves are alternately distributed.

[0010] According to some embodiments of the present application, the first protrusions are arc-shaped protrusions; and / or, the grooves are arc-shaped grooves.

[0011] According to some embodiments of the present application, each first protrusion and / or each groove comprises a first barrier surface; the first barrier surface is inclined with respect to a reference surface perpendicular to the distribution direction of the first barrier layer and the second barrier layer.

[0012] According to some embodiments of the present application, the first barrier surface is provided with a plurality of second protrusions, and the side of the second protrusions opposite to the first barrier surface comprises a second barrier surface, the second barrier surface is connected to the first barrier surface at one end in the extension direction and is spaced apart from the first barrier surface at the other end.

[0013] According to some embodiments of the present application, the first barrier layer comprises a first baffle plate and a first connecting plate; the first baffle plate and the second barrier layer are respectively connected to the opposite sides of the first connecting plate; the first baffle plate is provided with the first protrusions on the side opposite to the first connecting plate.

[0014] According to some embodiments of the present application, the second barrier layer comprises a mounting frame and a support frame; the mounting frame is connected to the first barrier layer and is provided with a first accommodating cavity; the support frame is arranged in the first accommodating cavity; the support frame is provided with a plurality of second accommodating cavities distributed in a honeycomb shape, and each second accommodating cavity is filled with the first fluid.

[0015] According to some embodiments of the present application, the side of the first barrier layer facing the second barrier layer is provided with a first connecting part, and the side of the second barrier layer facing the first barrier layer is provided with a second connecting part; one of the first connecting part and the second connecting part is a protruding plug-in protrusion, and the other is a recessed plug-in groove, and the plug-in protrusion is plugged into the plug-in groove.

[0016] According to some embodiments of the present application, the walls of the plug-in protrusion and the plug-in groove are adhesively fixed; and / or, the number of the first connecting parts and the number of the second connecting parts are both a plurality, and each first connecting part corresponds to one second connecting part.

[0017] According to some embodiments of the present application, the plug-in groove is filled with a second fluid, and the second fluid is a shear thickening fluid.

[0018] According to some embodiments of the present application, the protective device further comprises a third blocking layer connected to a side of the second blocking layer opposite to the first blocking layer; the third blocking layer comprises a magneto-rheological elastic plate made of ferromagnetic particles and a high polymer.

[0019] According to some embodiments of the present application, the third blocking layer further comprises a second connecting plate connected to a side of the magneto-rheological elastic plate opposite to the second blocking layer; the protective device further comprises a locking member connected to the first blocking layer and the second connecting plate, for locking the first blocking layer, the second blocking layer and the third blocking layer.

[0020] According to the test system of the second aspect of the embodiments of the present application, the test system comprises a launching device for launching an impact object to a test object, and the protective device of any of the above embodiments, and the protective device is arranged on a secondary flight path of the impact object after the impact object impacts the test object.

[0021] Additional aspects and advantages of the present application will be given, partially in the following description, partially become obvious from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings and embodiments, in which:

[0023] Figure 1 Fig. 1 shows a structural schematic diagram of a protective device provided by an embodiment of the present application;

[0024] Figure 2 Fig. 2 shows a partially exploded structural schematic diagram of a first blocking layer and a second blocking layer provided by an embodiment of the present application;

[0025] Figure 3 Fig. 3 shows a structural schematic diagram of a third blocking layer provided by an embodiment of the present application; Figure 3 Fig. 4 shows an enlarged structural schematic diagram of a part III in Fig. 3;

[0026] Figure 4 Fig. 5 shows a structural schematic diagram of the first blocking layer provided by an embodiment of the present application;

[0027] Figure 5 Fig. 6 shows a structural schematic diagram of the second blocking layer provided by an embodiment of the present application;

[0028] Figure 6 Fig. 7 shows a structural schematic diagram of the third blocking layer provided by an embodiment of the present application.

[0029] LIST OF REFERENCE NUMERALS

[0030] Fig. 1 shows a protective device 100 provided by an embodiment of the present application;

[0031] First blocking layer 110; first connecting plate 111; first baffle 113; first protrusion 1131; groove 1133; limiting space 1135; first blocking surface 1137; second protrusion 1139; second blocking surface 1141; insertion protrusion 115;

[0032] Second barrier layer 130; mounting frame 131; first receiving cavity 1311; insertion slot 1313; support frame 133; second receiving cavity 1331;

[0033] Third blocking layer 150; magnetorheological elastic plate 151; second connecting plate 153; locking element 170. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 limiting this invention.

[0036] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] In the description of the application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0039] Referring to Figure 1 The embodiment of the application provides a test system, the test system comprising a launching device and a protective device 100.

[0040] The launching device is configured to launch the impact object to the object to be tested, so as to simulate the impact scenario of the object to be tested from the flying object in the actual work, so as to detect the anti-impact performance of the object to be tested.

[0041] The launching device can be a light gas gun, an electromagnetic launching device or other launching device.

[0042] The object to be tested can be a pipeline to be tested, a concrete slab or other object to be tested.

[0043] The protective device 100 is arranged on the secondary flying path of the impact object after the impact object impacts the object to be tested, so that the protective device 100 can block the secondary flying of the impact object, which helps to improve the disaster caused by the secondary flying of the impact object after the impact object impacts the object to be tested, and improves the safety of the test process.

[0044] It should be noted that the protective device 100 can also be used in scenarios other than the test system.

[0045] As an example, for a construction site, the protective device 100 can be arranged in the construction area and the non-construction area to block various flying objects from the construction area.

[0046] As another example, during the operation of the engineering equipment, the protective device 100 can be arranged in the processing area and the non-processing area to block various flying objects from the processing area.

[0047] Referring to Figures 1-2 In some embodiments, the protective device 100 comprises a first blocking layer 110 and a second blocking layer 130.

[0048] The first barrier layer 110 is provided with a plurality of first protrusions 1131 distributed at intervals, so that a limiting space 1135 for the flying object to enter is formed between adjacent first protrusions 1131, and the outer wall of each first protrusion 1131 surrounding the limiting space 1135 can block the flying object, so that the flying object can bounce between the outer walls of the first protrusions 1131, reducing the probability of the flying object bouncing out of the protective device 100 after impacting the first barrier layer 110, and improving the protection performance of the protective device 100.

[0049] When arranging the protective device 100, the side of the first barrier layer 110 provided with the first protrusions 1131 can be directed towards the flight path of the flying object, so that the flying object can first impact the side of the first barrier layer 110 provided with the first protrusions 1131.

[0050] Adjacent first protrusions 1131 can be connected by a plane or an arc surface.

[0051] The distribution density of the plurality of first protrusions 1131 can be set according to requirements, so that flying objects of more sizes can enter the limiting space 1135.

[0052] The shape of the first protrusions 1131 can be various, for example, the first protrusions 1131 can be pyramid-shaped protrusions, conical protrusions, cylindrical protrusions, prismatic protrusions, spherical protrusions or other shaped protrusions.

[0053] The second barrier layer 130 is connected to the side of the first barrier layer 110 opposite to the first protrusions 1131, and the second barrier layer 130 is filled with a first fluid, and the first fluid is a shear thickening fluid. When the flying object penetrates the first barrier layer 110 and enters the second barrier layer 130, the viscosity of the first fluid can increase sharply under the impact of the flying object, and the hardness of the first fluid can increase sharply, which can help to absorb the energy of the flying object, so that the impact force of the flying object can be continuously attenuated, and the first fluid can automatically recover after being impacted by the flying object, which can help to improve the attenuation of the protection force of the protective device 100 after being impacted by the flying object, and ensure the protection effect of the protective device 100.

[0054] The shear thickening fluid can be a silica particle suspension, a non-Newtonian fluid formed by adding a polymer (such as polyacrylic acid, polyvinyl alcohol, etc.) to the particle suspension, or other shear thickening fluids. The specific material ratio of the shear thickening fluid can refer to the prior art, and will not be described here.

[0055] In some embodiments, the side of the first barrier layer 110 opposite to the second barrier layer 130 is also concavely provided with a plurality of grooves 1133, and the first protrusions 1131 and the grooves 1133 are alternately arranged, so as to reduce the planar area between adjacent first protrusions 1131, and help to reduce the case that the flying object vertically impacts the planar area.

[0056] It can be understood that the grooves 1133 and the limiting spaces 1135 are communicated, so as to prolong the flight distance of the flying object from entering the limiting space 1135 to impacting the second barrier layer 130, help to consume the energy of the flying object, and further improve the protection performance of the first barrier layer 110.

[0057] The arrangement mode between the plurality of first protrusions 1131 and the plurality of grooves 1133 can be set according to requirements.

[0058] As an example, the plurality of first protrusions 1131 and the plurality of grooves 1133 can be arranged in a rectangular array.

[0059] The distribution density of the plurality of grooves 1133 can also be set according to requirements.

[0060] The shape of the grooves 1133 can be various, for example, the grooves 1133 can be pyramid-shaped grooves, conical grooves, cylindrical grooves, prismatic grooves, spherical grooves or other shaped grooves 1133.

[0061] In some embodiments, the first protrusions 1131 can be arc-shaped protrusions, so as to improve the case that the local stress is concentrated due to the existence of sharp corners of the first protrusions 1131, help to improve the structural strength of the first protrusions 1131, in addition, the outer surface of the arc-shaped protrusions is arc-shaped, can deflect the movement track of the flying object, so as to disperse the energy of the flying object, and further improve the protection performance of the first barrier layer 110.

[0062] In some embodiments, the grooves 1133 can be arc-shaped grooves, so as to improve the case that the local stress is concentrated due to the existence of sharp corners of the grooves 1133, help to improve the structural strength of the groove walls of the grooves 1133, in addition, the inner wall surface of the arc-shaped grooves is arc-shaped, can deflect the movement track of part of the flying object, so as to disperse the energy of the flying object, and further improve the protection performance of the first barrier layer 110.

[0063] The embodiments of the present application take the case that the first protrusions 1131 are arc-shaped protrusions and the grooves 1133 are arc-shaped grooves as an example for explanation and description, and the arrangement mode of the arc-shaped protrusions and the arc-shaped grooves can be set according to requirements.

[0064] As an example, the arc-shaped protrusion can be a circular protrusion (e.g., a spherical protrusion), and the arc-shaped groove can be a circular groove 1133 (e.g., a spherical groove). The arc-shaped protrusions and arc-shaped grooves can be arranged in a rectangular array, that is, each arc-shaped groove is adjacent to one arc-shaped protrusion on each side along the width direction of the first barrier layer 110, and is adjacent to one arc-shaped protrusion on each side along the height direction of the first barrier layer 110. The distribution direction of the first barrier layer 110 and the second barrier layer 130 is approximately the thickness direction of the first barrier layer 110.

[0065] As another example, both the arc-shaped protrusions and the arc-shaped grooves are roughly cylindrical, and the arc-shaped protrusions and the arc-shaped grooves can extend in the same direction along the width or length of the first barrier layer 110.

[0066] Please see Figures 1-3 In some embodiments, each first protrusion 1131 and / or each recess 1133 includes a first blocking surface 1137 (e.g., Figure 3 As shown, the first blocking surface 1137 is inclined relative to the reference surface that is perpendicular to the distribution direction of the first blocking layer 110 and the second blocking layer 130. This increases the incident angle of projectiles that are obliquely directed toward the first blocking surface 1137, which helps to reduce the ricochet of projectiles when they hit the first blocking surface 1137. Furthermore, since the first blocking surface 1137 is inclined to the reference surface, the first blocking surface 1137 can also deflect part of the trajectory of the projectiles to disperse their energy, further improving the protective performance of the first blocking layer 110.

[0067] The first blocking surface 1137 can be a plane and / or an inclined plane.

[0068] As an example, when the first protrusion 1131 is an arc-shaped protrusion and the groove 1133 is an arc-shaped groove, the arc-shaped convex surface of the outer surface of the arc-shaped protrusion can serve as the first blocking surface 1137, and the arc-shaped groove inner wall surface of the groove 1133 can also serve as the first blocking surface 1137.

[0069] As another example, when the first protrusion 1131 is an arc-shaped protrusion and the groove 1133 is pyramidal in shape, the arc-shaped convex surface of the outer surface of the arc-shaped protrusion can serve as the first blocking surface 1137, and the conical surface of the inner wall of the groove 1133 can also serve as the first blocking surface 1137.

[0070] As another example, when the first protrusion 1131 is pyramidal in shape and the groove 1133 is an arc-shaped groove, the conical surface of the first protrusion 1131 can serve as the first blocking surface 1137, and the inner wall surface of the arc-shaped groove of the groove 1133 can also serve as the first blocking surface 1137.

[0071] In some embodiments, the first blocking surface 1137 is provided with a plurality of second protrusions 1139, the side of the second protrusions 1139 opposite to the first blocking surface 1137 is provided with a second blocking surface 1141, the second blocking surface 1141 is connected to the first blocking surface 1137 at one end in the extending direction and is spaced from the first blocking surface 1137 at the other end, so that the second blocking surface 1141 can also increase the incident angle of part of the flying objects, further reducing the ricochet of the flying objects, and the second blocking surface 1141 can also deflect the movement trajectory of the flying objects to further disperse the impact force of the flying objects, further improving the protection performance of the first blocking layer 110.

[0072] The second blocking surface 1141 can be an arc surface, or the second blocking surface 1141 can be an inclined surface.

[0073] As an example, the plurality of second protrusions 1139 can be arranged in an ordered array, and each second protrusion 1139 is an asymmetric structure, which helps to further improve the suppression effect on the ricochet of the flying objects and can further improve the deflection effect on the movement trajectory of the flying objects. For example, the plurality of second protrusions 1139 can be arranged in a fish scale shape, and the shape of the second protrusions 1139 can adopt a fish scale-like shape.

[0074] In some embodiments, the second protrusions 1139 can also adopt the same shape and arrangement direction as the first protrusions 1131, and specific embodiments can be referred to the above embodiments, which will not be described here.

[0075] Please refer to Figures 1-2 In some embodiments, the first blocking layer 110 can include a first connecting plate 111 and a first baffle 113.

[0076] The first baffle 113 and the first connecting plate 111 can be metal plates (such as steel plates or other metal plates) to improve the protection effect of the first blocking layer 110.

[0077] The first baffle 113 and the second blocking layer 130 are respectively connected to the opposite sides of the first connecting plate 111, and the first baffle 113 is provided with a first protrusion 1131 on the side opposite to the first connecting plate 111, so that the first baffle 113 can be connected to the second blocking layer 130 through the first connecting plate 111, which helps to reduce the connection difficulty.

[0078] As an example, the first baffle 113 can adopt a corrugated plate, and the first connecting plate 111 can adopt a flat plate.

[0079] The first baffle 113 and the first connecting plate 111 can be connected and fixed by one or more of bonding, welding, clamping, and connecting through a fixing member, and the fixing member can adopt a bolt, a screw, or other fixing members.

[0080] The first connecting plate 111 and the second barrier layer 130 can also be connected and fixed by one or more of the following connection manners: bonding, welding, clamping, and connection through a fixing member.

[0081] Please refer to Figure 4 In some embodiments, the first connecting plate 111 can be a ring-shaped plate or a hollow plate, which can help reduce the weight of the first connecting plate 111 and thus the weight of the protection device 100.

[0082] Please refer to Figure 1 , Figure 2 and Figure 5 In some embodiments, the second barrier layer 130 can include a mounting frame 131 and a support frame 133.

[0083] The mounting frame 131 is connected to the first barrier layer 110, and the mounting frame 131 is provided with a first accommodating cavity 1311, and the support frame 133 is arranged in the first accommodating cavity 1311. The support frame 133 is provided with a plurality of second accommodating cavities 1331 (as shown in Figure 5 Each of the second accommodating cavities 1331 is filled with a first fluid. When a flying object impacts the first fluid, the first fluid can absorb the energy of the flying object, and the cavity wall of the second accommodating cavity 1331 can deform to disperse the impact load of the flying object, which can help further improve the protection performance of the second barrier layer 130.

[0084] In addition, the support frame 133 adopts a porous (i.e., a plurality of second mounting cavities) thin-wall structure, which can help ensure the protection performance of the second barrier layer 130 while reducing the overall weight of the second barrier layer 130.

[0085] As an example, the mounting frame 131 can adopt a metal frame (e.g., a steel structure frame or other metal frame) to improve the protection performance of the mounting frame 131. The support frame 133 can also adopt a metal frame (e.g., a steel support frame 133 or other metal frame), which can help improve the support force of the support frame 133 and improve the heat dissipation effect of the support frame 133. The second accommodating cavities 1331 are substantially hexagonal prism holes extending along the distribution direction of the first barrier layer 110 and the second barrier layer 130. Any two adjacent hexagonal prism holes can share an edge, which can help the second accommodating cavities 1331 be more densely distributed to improve the protection performance. The orifices at both ends of the second accommodating cavities 1331 can be sealed by sealing covers to reduce the leakage of the first fluid, or the orifices at both ends of the second accommodating cavities 1331 can be directly connected and sealed with the cavity wall of the first accommodating cavity 1311.

[0086] It should be noted that the second accommodating cavity 1331 can also be a hole with a shape other than a hexagonal prism hole, such as a cylindrical hole, an elliptical hole, a prism hole with other number of edges, or a hole with other shape. The cavity wall of the second accommodating cavity 1331 can adopt a thin wall structure, which can facilitate deformation of the cavity wall of the second accommodating cavity 1331. For example, the thickness of the cavity wall of the second accommodating cavity 1331 can be less than the thickness of the side wall of the mounting frame 131, and the thickness can be set according to requirements.

[0087] Referring to Figures 1-2 In some embodiments, one side of the first barrier layer 110 facing the second barrier layer 130 can be provided with a first connecting part, and one side of the second barrier layer 130 facing the first barrier layer 110 can be provided with a second connecting part.

[0088] One of the first connecting part and the second connecting part can be a protruding plug-in protrusion 115, and the other can be a recessed plug-in groove 1313, and the plug-in protrusion 115 is plugged into the plug-in groove 1313 to connect and fix the first barrier layer 110 and the second barrier layer 130.

[0089] As an example, the surface of the first connecting plate 111 facing the mounting frame 131 can be welded with a plug-in protrusion 115, and the material of the plug-in protrusion 115 and the first connecting plate 111 can adopt the same material to improve the welding strength and reduce the welding difficulty. The outer wall of the mounting frame 131 facing the first connecting plate 111 can be recessed with a plug-in groove 1313, and the plug-in protrusion 115 can be plugged into the plug-in groove 1313 to connect and fix the first connecting plate 111 and the mounting frame 131.

[0090] In some embodiments, the plug-in protrusion 115 and the groove wall of the plug-in groove 1313 are adhesively fixed, so as to improve the connection strength of the first barrier layer 110 and the second barrier layer 130, and facilitate reduction of the separation of the first barrier layer 110 and the second barrier layer 130 under the impact of the flying object.

[0091] In some embodiments, the plug-in groove 1313 can be filled with a second fluid, and the second fluid can also be a shear thickening fluid. In this way, the plug-in protrusion 115 and the groove wall of the plug-in groove 1313 can be adhesively fixed through the shear thickening fluid. When the protective device 100 is subjected to the impact of the flying object, the second fluid can have a sharp increase in viscosity under the impact of the flying object, so as to improve the adhesion strength between the plug-in protrusion 115 and the groove wall of the plug-in groove 1313, and facilitate further reduction of the separation of the first barrier layer 110 and the second barrier layer 130 under the impact of the flying object.

[0092] In some embodiments, the first connecting part and the second connecting part are both in plurality, and each first connecting part corresponds to a second connecting part, so as to increase the fixing points between the first barrier layer 110 and the second barrier layer 130, and help to increase the strength and stability of the connection between the first barrier layer 110 and the second barrier layer 130.

[0093] The specific number and distribution density of the first connecting part and the second connecting part can be set according to requirements.

[0094] Please refer to Figure 1 and Figure 6 In some embodiments, the protective device 100 can further include a third barrier layer 150, which can be connected to the side of the second barrier layer 130 facing away from the first barrier layer 110.

[0095] The third barrier layer 150 can include a magnetorheological elastomer plate 151 (i.e., a magnetorheological elastomer (MRE)), which can be made of ferromagnetic particles and a high polymer, so that the rigidity of the magnetorheological elastomer plate 151 can be freely adjusted by adjusting the distribution number and distribution density of the ferromagnetic particles, so as to reduce the case that the flying object penetrates the magnetorheological elastomer plate 151.

[0096] The high polymer can refer to rubber, silicone rubber, or other high polymers.

[0097] Specifically, the number of ferromagnetic particles in the high polymer can be flexibly adjusted when the magnetorheological elastomer plate 151 is prepared. The ferromagnetic particles form a chain-like aggregation structure in the magnetic field direction under the action of an external magnetic field, and the ferromagnetic particles and the high polymer are solidified to form the magnetorheological elastomer plate 151 through a solidification process, so as to improve the shear modulus of the magnetorheological elastomer plate 151 and improve the rigidity of the magnetorheological elastomer plate 151. The distribution density of the ferromagnetic particles in the high polymer can be set according to requirements, so as to adjust the rigidity of the magnetorheological elastomer plate 151.

[0098] In some embodiments, the third barrier layer 150 further includes a second connecting plate 153 connected to the side of the magnetorheological elastomer plate 151 facing away from the second barrier layer 130, and the connection mode can adopt bonding, clamping, connection through a fixing part, or other connection modes.

[0099] The protection device 100 can further include locking members 170 connected to the first blocking layer 110 and the second connecting plate 153, for locking the first blocking layer 110, the second blocking layer 130 and the third blocking layer 150, so as to reduce the separation of the first blocking layer 110, the second blocking layer 130 and the third blocking layer 150 under the impact of the flying object, and the locking of the first blocking layer 110, the second blocking layer 130 and the third blocking layer 150 can be achieved only when the first blocking layer 110 and the third blocking layer 150 are connected to the locking members 170, which helps to reduce the number of locking members 170.

[0100] As an example, the number of locking members 170 can be multiple, and the locking members 170 can be bolts. The first connecting plate 111 can be provided with a plurality of first lock holes, and the second connecting plate 153 can be provided with a plurality of second lock holes. The first lock holes, the second lock holes and the locking members 170 can be one-to-one corresponding, and each locking member 170 can be arranged in one first lock hole and one second lock hole to lock the first connecting plate 111 and the second connecting plate 153, and the clamping force between the first connecting plate 111 and the second connecting plate 153 can clamp the second blocking layer 130 and the magnetorheological elastic plate 151.

[0101] Please refer to Figure 6 In some embodiments, the second connecting plate 153 can be a ring-shaped plate or a hollow plate, which helps to reduce the weight of the second connecting plate 153, thereby reducing the weight of the protection device 100.

[0102] In the protection device 100 and the test system provided by the embodiments, a plurality of first protrusions 1131 are arranged on the first blocking layer 110 in a spaced manner, so that a limiting space 1135 for the flying object to enter is formed between adjacent first protrusions 1131, so that the flying object can bounce between the outer walls of the first protrusions 1131 surrounding the limiting space 1135, reducing the probability of the flying object bouncing out of the protection device 100 after impacting the first blocking layer 110, and improving the protection performance of the protection device 100. The first fluid filled in the second blocking layer 130 is a shear thickening fluid, and the viscosity and hardness of the first fluid can increase sharply under the impact of the flying object, which helps to absorb the energy of the flying object, so that the impact force of the flying object continues to decay, and the first fluid can automatically recover after being impacted by the flying object, which helps to improve the decay of the protection force of the protection device 100 after being impacted by the flying object, and ensures the protection effect of the protection device 100.

[0103] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A protective device, characterized in that Comprise: a first barrier layer, the first barrier layer being provided with a plurality of first protrusions distributed at intervals; and a second barrier layer, the second barrier layer being connected to a side of the first barrier layer opposite to the first protrusions; the second barrier layer being filled with a first fluid, the first fluid being a shear thickening fluid.

2. The guard of claim 1, wherein The side of the first barrier layer opposite to the second barrier layer is also provided with a plurality of grooves, the first protrusions and the grooves being alternately distributed.

3. The guard of claim 2, wherein, The first protrusions are arc-shaped protrusions; and / or, the grooves are arc-shaped grooves.

4. The guard of claim 2, wherein Each of the first protrusions and / or each of the grooves comprises a first barrier surface; The first barrier surface is inclined with respect to a reference surface perpendicular to the distribution direction of the first barrier layer and the second barrier layer.

5. The guard of claim 4, wherein, The first barrier surface is provided with a plurality of second protrusions, a side of the second protrusions opposite to the first barrier surface comprises a second barrier surface, one end of the second barrier surface in the extension direction is connected to the first barrier surface, and the other end is spaced apart from the first barrier surface.

6. The guard of claim 1, wherein The first barrier layer comprises a first baffle plate and a first connecting plate; The first baffle plate and the second barrier layer are respectively connected to opposite sides of the first connecting plate; The first baffle plate is provided with the first protrusions on a side opposite to the first connecting plate.

7. The guard of claim 1, wherein The second barrier layer comprises a mounting frame and a support frame; The mounting frame is connected to the first barrier layer and is provided with a first accommodating cavity; The support frame is arranged in the first accommodating cavity; The support frame is provided with a plurality of second accommodating cavities distributed in a honeycomb shape, each of the second accommodating cavities is filled with the first fluid.

8. The guard of claim 1, wherein The first barrier layer is provided with a first connecting portion on a side facing the second barrier layer, and the second barrier layer is provided with a second connecting portion on a side facing the first barrier layer; One of the first connecting portion and the second connecting portion is a protruding plug-in protrusion, and the other is a recessed plug-in groove, the plug-in protrusion is plugged into the plug-in groove.

9. The guard of claim 8, wherein, The walls of the plug-in protrusion and the plug-in groove are adhesively fixed; And / or, the number of the first connecting portion and the number of the second connecting portion are both a plurality, each of the first connecting portion corresponds to one of the second connecting portion.

10. The guard of claim 8, wherein, The plug-in groove is filled with a second fluid, the second fluid being a shear thickening fluid.

11. The guard device according to any one of claims 1 to 10, characterized in that The protective device further comprises a third barrier layer, the third barrier layer being connected to a side of the second barrier layer opposite to the first barrier layer; The third barrier layer comprises a magneto-rheological elastomer plate, the magneto-rheological elastomer plate being made of ferromagnetic particles and high molecular polymers.

12. The guard of claim 11, wherein, The third barrier layer further comprises a second connecting plate, the second connecting plate being connected to a side of the magneto-rheological elastomer plate opposite to the second barrier layer; The protective device further comprises a locking member, the locking member being connected to the first barrier layer and the second connecting plate, and being used for locking the first barrier layer, the second barrier layer and the third barrier layer.

13. A test system, characterized by Comprise: a launching device, the launching device being used for launching an impact object to a to-be-measured object; and The protective device according to any one of claims 1 to 12, the protective device being arranged on a secondary flight path of the impact object after the impact object impacts the to-be-measured object.

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