Testing equipment for bulletproof and stab-resistant material

Abstract

The invention relates to the technical field of bulletproof and stab-resistant testing, and discloses bulletproof and stab-resistant material testing equipment which comprises a testing table, a clamp is installed on one side of the testing table and used for fixing a to-be-tested material, a testing assembly is installed on the upper surface of the testing table and comprises a rotating table, and the rotating table is used for rotating the rotating table. The bottom end of the rotating table is rotationally connected with the test table through a connecting shaft, an outer gun barrel is fixedly connected to the upper side wall of the rotating table, a rotating gun head is rotationally connected to one end of an inner gun barrel, the other end of the connecting shaft penetrates through the inner gun barrel to be fixedly connected with an impeller, and an exhaust hole is formed in the surface of the inner gun barrel. A high-pressure driving assembly is fixedly arranged on the surface of the testing table and used for injecting high-pressure gas into the outer gun barrel. According to the invention, high-pressure gas is injected into the outer gun barrel through the high-pressure driving assembly, and the test piece is launched to rapidly impact a to-be-tested material, so that a bulletproof or puncture-proof test is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of bulletproof and stab-proof testing, and specifically to a testing device for bulletproof and stab-proof materials. Background Art

[0002] Bulletproof and stab-proof materials refer to special materials that can resist attacks from weapons such as bullets and knives to ensure the safety of personnel and objects. They mainly include high-performance fiber materials with high strength and high flexibility, metal materials with relatively high strength and hardness, ceramic materials with extremely high hardness but brittleness, and composite materials that combine the advantages of multiple materials. In order to accurately evaluate their protective performance under different attack conditions, ensure reliable protection of personnel safety in practical applications such as military and law enforcement, and at the same time make them meet relevant domestic and international standards and specifications and discover problems existing in bulletproof and stab-proof materials, it is necessary to test bulletproof and stab-proof materials.

[0003] Existing testing devices for bulletproof and stab-proof materials usually conduct bulletproof tests through the air cannon testing method. However, due to the lack of a reasonable structure for simulating the rotational impact of bullets, there will be some problems in terms of test accuracy, comprehensiveness of material evaluation, and data application. In addition, the clamping distance of the fixture for the material is not easy to adjust. When testing materials with different volumes and lengths, the materials need to be cut before testing, which reduces the testing efficiency.

[0004] After retrieval, a mechanical property testing device based on bulletproof steel plates is disclosed in the publication number: CN114088549B, which relates to the technical field of mechanical property testing devices. In order to solve the problems in the existing mechanical property testing devices based on bulletproof steel plates, such as the clamping distance of the fixture for the bulletproof steel plate is not easy to adjust, reducing the testing efficiency, and at the same time the device cannot detect steel plates with different inclination angles, and there is a lack of a reasonable structure for simulating the rotational impact of bullets, thus reducing the comprehensiveness of the detection results of bulletproof steel plates. It includes a frame, and a cross plate is provided at the top of the frame; two sliding frames are provided at the top of the cross plate, and fixtures are provided on both sliding frames. In the present invention, since the servo motor provides power, and through the transmission of the driving pulley, belt and driven pulley, the rotating rod drives the hammer head to rotate. It can be seen that while the hammer head conducts a vertical test on the bulletproof steel plate, it simulates the impact force of the rotating bullet, further improving the comprehensiveness of the test and ensuring more accurate experimental results.

[0005] In the above application, the bullet head is pushed down by a cylinder for testing, and the pressure output of the cylinder may be relatively stable, making it difficult to generate the high-pressure pulse released instantaneously like that of an air cannon, and it is not ideal for simulating the instantaneous high-energy output during bullet firing. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a testing device for bulletproof and stab-proof materials, which solves the problem that the existing testing devices for bulletproof and stab-proof materials lack a reasonable structure for simulating the rotational impact of bullets.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A testing device for bulletproof and stab-proof materials, including a testing table, on one side of the testing table is installed a fixture for fixing the material to be tested. On the upper surface of the testing table is installed a testing component, which includes a rotating table. The bottom end of the rotating table is rotationally connected to the testing table through a connecting shaft. On the upper side wall of the rotating table is fixedly connected an outer gun barrel. Inside the inner wall of the outer gun barrel slides an inner gun barrel. One end of the inner gun barrel is rotationally connected to a rotating gun head. One end of the rotating gun head is fixedly connected with a test piece through a bolt. Inside the inner wall of the rotating gun head is fixedly connected a connecting shaft. The other end of the connecting shaft passes through the inner gun barrel and is fixedly connected with an impeller. On the surface of the inner gun barrel are opened exhaust holes. On the surface of the testing table is fixedly arranged a high-pressure driving component, and the high-pressure driving component is used to inject high-pressure gas into the inner part of the outer gun barrel.

[0008] Preferably, the high-pressure driving component includes an air compressor and a gas storage tank connected to each other. The air outlet of the gas storage tank is fixedly connected to one end of the outer gun barrel through an air delivery pipe, and an electromagnetic valve is fixedly arranged on the air delivery pipe.

[0009] Preferably, the test piece includes a test bullet head and a stabbing probe.

[0010] Preferably, the testing table includes a fixed table and a sliding table. The fixed table and the sliding table are slidably connected. On the lower surface of the sliding table are fixedly arranged a number of moving wheels. On the upper surface of the sliding table is fixedly connected a U-shaped transparent protective cover. The connecting shaft and the rotating table are installed on the fixed table. Inside the fixed table is embedded an electric telescopic rod, and the other end of the electric telescopic rod is fixedly connected to the inner wall of the sliding table.

[0011] Preferably, on the surface of the protective cover is opened a U-shaped notch. Inside the inner side wall of the protective cover slides a U-shaped sliding layer. On both sides of the sliding layer are respectively fixedly connected with a return spring, and the other end of the return spring is fixedly connected to the inner wall of the protective cover. On both sides of the sliding layer are respectively fixedly connected with a connecting rope one, and the other end of the connecting rope one is fixedly connected to the outer wall of the fixed table.

[0012] Preferably, the connecting shaft adopts a torsion spring rotating shaft. Inside the inner side wall of the protective cover slides a sliding seat. On the outer wall of the sliding seat is fixedly connected with a connecting rope two, and the other end of the connecting rope two is fixedly connected to the outer wall of the rotating table. On the inner side wall of the protective cover is fixedly connected with a limiting plate. On the upper surface of the rotating table is fixedly arranged a limiting part.

[0013] Preferably, the fixture includes a support plate, the bottom end of the support plate is rotatably connected to the upper surface of the test bench, a convex mounting groove is formed on the surface of the support plate, a mounting seat is fixedly connected to the lower side wall of the test bench, and a cylinder is rotatably connected to the upper side wall of the mounting seat through a shaft, and the driving end of the cylinder is rotatably connected to the outer wall of the support plate.

[0014] Preferably, a plurality of protruding layers are formed by outward protrusion of the lower side wall of the support plate, a sliding groove is formed on the upper surface of the protruding layer, a limiting clamping plate is slidably connected to the inner wall of the sliding groove, a mounting frame is fixedly connected to the upper surface of the protruding layer, the mounting frame is made of ferromagnetic material, and a plurality of pressing springs are fixedly connected to the opposite side of the mounting frame and the limiting clamping plate.

[0015] Preferably, a detection groove is formed on the surface of the support plate, a detection plate is slidably connected to the inner wall of the detection groove, and a pressure sensor is fixedly arranged at the center of the detection groove.

[0016] Preferably, an inclined sliding bracket is fixedly connected to the lower side wall of the protruding layer, a counterweight block is slidably connected to the inner wall of the sliding bracket, and a magnetic block is embedded on the surface of the counterweight block.

[0017] Working principle: During the test, the material to be tested is clamped by the fixture, and different test pieces are selected according to different test items. When performing a bulletproof test, the test bullet is installed at the rotating gun head, and when performing a stab resistance test, the stabbing probe is installed at the rotating gun head. High-pressure gas is injected into the inner barrel of the outer barrel through the high-pressure driving component, and the high-pressure gas pushes the inner barrel to slide outwards, thereby launching the test piece to quickly impact the material to be tested, realizing bulletproof or stab resistance tests. Moreover, when the high-pressure gas passes through the inner barrel, it drives the impeller to rotate, so that the test piece can rotate when it is launched, thus simulating the rotation impact test of a bullet, thereby improving the accuracy of the bulletproof test.

[0018] When replacing the test piece, the electric telescopic rod extends to drive the protective cover to separate from the rotating table. After the rotating table moves out of the protective cover for a certain distance, due to the length limitation of the second connecting rope, the rotating table will be gradually pulled to rotate, making the test piece rotate outwards, thus facilitating the test personnel to replace the test piece.

[0019] When the clamp is used to clamp the plate-shaped test material chamber, the cylinder is controlled to operate through the controller, and the cylinder extends to push the support plate to rotate vertically. The test is performed by inserting the plate-shaped material to be tested into the interior of the installation slot, and the installation slot is open on both sides to facilitate the insertion of materials of different lengths and thicknesses. There is no need to cut the material, which improves the test efficiency. When the plate-shaped material is inserted into the installation slot, the limit clamp elastically presses the plate-shaped material to clamp and fix it. The test piece impacting the test material will transmit the impact force to the detection plate, and the detection plate will transmit the impact force to the pressure sensor, thereby detecting the impact force exerted on the test material through the pressure sensor.

[0020] When clamping the test material made of soft fabric, the control cylinder contracts and pulls the support plate to rotate downward more than 90° until the top of the sliding bracket is initially facing downward. At this time, the counterweight block slides downward, causing the magnetic block to slide to the top of the limit card plate. The limit card plate is adsorbed by the magnetic block, causing the limit card plate to move upward, so that the limit card plate no longer presses against the outer wall of the detection plate, thereby facilitating the laying of the flexible material on the detection plate.

[0021] After the flexible material is laid, the cylinder is controlled to extend. When the support plate rotates horizontally, the inclination direction of the sliding bracket changes, causing the counterweight block to slide again. The sliding of the counterweight block causes the magnetic block and the limit card plate to be offset and no longer apply magnetic adsorption force, so that the limit card plate presses the flexible material through the elastic force of the clamping spring, so that the flexible material will not loosen and fall when the support plate rotates vertically later. After the flexible material is clamped vertically, the controller controls the electric push rod to operate. The electric push rod extends to drive the clamping cylinder to pass through the large annular channel and push the detection plate to move the detection plate. The movement of the detection plate pushes the limit card plate to move until the limit card plate pushes the limit protrusion. At this time, the flexible material can be pressed and fixed to prevent the flexible material test from being affected by wrinkles due to insufficient elastic pressure of the limit card plate during the test, affecting the test effect.

[0022] The present invention provides a testing device for bulletproof and stab-proof materials. It has the following beneficial effects: 1. The present invention injects high-pressure gas into the interior of the outer barrel through a high-pressure driving component, launches the test piece to quickly impact the material to be tested, and realizes bulletproof or stab-proof testing. The high-pressure gas flows and drives the impeller to rotate, so that the test piece can rotate when it is launched, thereby simulating a bullet rotation impact test, thereby improving the accuracy of the bulletproof test.

[0023] 2. The present invention drives the sliding table to slide by extending and retracting the electric telescopic rod. The sliding table is stored when it slides toward the fixed table, which can reduce the space occupied by the device and facilitate cleaning of debris dropped when the test material under the fixture is broken. The sliding table slides in a direction away from the fixed table to open the device for testing and adjust the test distance.

[0024] 3. In the present invention, the plate-shaped material to be tested is inserted into the interior of the installation groove for testing. The two sides of the installation groove are open, facilitating the insertion of materials with different lengths and thicknesses without the need to cut the materials, thereby improving the working efficiency of the testing.

[0025] 4. In the present invention, the cylinder contracts to pull the support plate to rotate downward, and the limit card plate is adsorbed by the magnetic block, causing the limit card plate to move upward, facilitating the laying of the flexible material on the detection plate. When the support plate rotates upward, the limit card plate presses the flexible material through the elastic force of the compression spring, so that the flexible material will not loosen and fall. Description of the Drawings

[0026] Figure 1 is a three-dimensional view of the present invention; Figure 2 is a schematic structural diagram of the test bench of the present invention; Figure 3 is a schematic structural diagram of the test component of the present invention; Figure 4 is a schematic cross-sectional view of the outer barrel of the present invention; Figure 5 is a schematic structural diagram of the test piece of the present invention; Figure 6 is a schematic structural diagram of the fixed table and the sliding table of the present invention; Figure 7 is a schematic structural diagram of the limit plate of the present invention; Figure 8 is a schematic structural diagram of the fixture of the present invention; Figure 9 is a schematic cross-sectional view of the support plate of the present invention; Figure 10 is a schematic cross-sectional view of the installation cylinder of the present invention.

[0027] Among them, 1. Test bench; 101. Fixed table; 102. Sliding table; 103. Protective cover; 104. Notch; 105. Sliding layer; 106. Return spring; 107. Connecting rope one; 108. Sliding seat; 109. Connecting rope two; 110. Limit plate; 2. Fixture; 201. Support plate; 202. Installation groove; 203. Protruding layer; 204. Slide groove; 205. Limit clamping plate; 206. Installation frame; 207. Compression spring; 210. Sliding bracket; 211. Counterweight; 212. Magnet; 3. Test component; 31. Rotary table; 32. Outer gun barrel; 33. Inner gun barrel; 34. Rotary gun head; 35. Test piece; 36. Coupling shaft; 37. Impeller; 351. Test bullet; 352. Stabbing probe; 4. Exhaust hole; 5. High-pressure drive component; 6. Mounting seat; 7. Cylinder; 8. Connecting shaft; 9. Limiting piece; 10. Electric telescopic rod; 11. Detection groove; 12. Detection plate; 13. Pressure sensor; 14. Limit protrusion; 15. Small annular channel; 16. Electric push rod; 17. Compression cylinder; 18. Installation cylinder. Detailed implementation manners

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to the attached Figure 1 - attached Figure 5, an embodiment of the present invention provides a testing device for bulletproof and stab-proof materials, including a testing table 1. A fixture 2 is installed on one side of the testing table 1, and the fixture 2 is used to fix the material to be tested. A testing component 3 is installed on the upper surface of the testing table 1. The testing component 3 includes a rotating table 31. The bottom end of the rotating table 31 is rotatably connected to the testing table 1 through a connecting shaft 8. A outer gun barrel 32 is fixedly connected to the upper side wall of the rotating table 31. An inner gun barrel 33 is slidably connected to the inner wall of the outer gun barrel 32. One end of the inner gun barrel 33 is rotatably connected to a rotating gun head 34. One end of the rotating gun head 34 is fixedly connected to a test piece 35 through a bolt. When replacing the test piece 35, the bolt can be unscrewed to replace the test piece 35. A connecting shaft 36 is fixedly connected to the inner wall of the rotating gun head 34. The other end of the connecting shaft 36 penetrates through the inner gun barrel 33 and is fixedly connected to an impeller 37. Exhaust holes 4 are formed on the surface of the inner gun barrel 33. A high-pressure driving component 5 is fixedly arranged on the surface of the testing table 1, and the high-pressure driving component 5 is used to inject high-pressure gas into the inner part of the outer gun barrel 32. The test piece 35 includes a test bullet head 351 and a stabbing probe 352. The test bullet head 351 has multiple types according to different bullet models. The test bullet head 351 has a streamlined shape. The test bullet head 351 is made of one material selected from lead, lead alloy, copper, iron, tungsten or heat-treated steel to reproduce the real state of the bullet. The stabbing probe 352 is used to simulate the puncture of a knife or a sharp object to test the stab-proof performance of the material. Conical or triangular military bayonets or other shapes or products can be used.

[0030] Specifically, the exhaust holes 4 are used to discharge the high-pressure gas at the exhaust holes 4 when the inner gun barrel 33 extends out, to avoid the explosion of the gun barrel due to excessive internal pressure. During the test, the material to be tested is clamped by the fixture 2. Different test pieces 35 are selected according to different test items. When performing the bulletproof test, the test bullet head 351 is installed at the rotating gun head 34. When performing the stab-proof test, the stabbing probe 352 is installed at the rotating gun head 34. High-pressure gas is injected into the inner part of the outer gun barrel 32 through the high-pressure driving component 5. The high-pressure gas pushes the inner gun barrel 33 to slide outwards, so as to launch the test piece 35 to quickly impact the material to be tested, realizing the bulletproof or stab-proof test. And when the high-pressure gas passes through the inner gun barrel 33, it drives the impeller 37 to rotate. The impeller 37 drives the connecting shaft 36 to rotate. The connecting shaft 36 drives the rotating gun head 34 to rotate. The rotating gun head 34 drives the test piece 35 to rotate, so that the test piece 35 can rotate when being launched, thus simulating the rotation impact test of the bullet and improving the accuracy of the bulletproof test.

[0031] Please refer to the appendix Figure 1 - appendix Figure 3, the high-pressure driving assembly 5 includes an air compressor and an air storage tank connected to each other, and the air outlet of the air storage tank is fixedly connected to one end of the outer barrel 32 through an air delivery pipe. An electromagnetic valve is fixedly arranged on the air delivery pipe, and a pressure sensor 13 is fixedly arranged on the air storage tank. The pressure sensor 13 monitors the real-time pressure value of the air storage tank. A controller is installed on the test bench 1, and the controller is electrically connected to the air compressor, the electromagnetic valve and the pressure sensor 13.

[0032] Specifically, the controller controls the operation of the air compressor to pressurize the air storage tank. The pressure sensor 13 detects the real-time pressure value of the air storage tank. After the pressurization is completed, the controller opens the electromagnetic valve, and the high-pressure air in the air storage tank instantly enters the outer barrel 32 to push the test piece 35 to accelerate.

[0033] Please refer to the appendix Figure 6 - appendix Figure 7 , the test bench 1 includes a fixed table 101 and a sliding table 102. The fixed table 101 and the sliding table 102 are slidably connected. A plurality of moving wheels are fixedly arranged on the lower surface of the sliding table 102. A U-shaped transparent protective cover 103 is fixedly connected to the upper surface of the sliding table 102. The transparent protective cover 103 facilitates the test personnel to watch the test process. The connecting shaft 8 and the rotating table 31 are installed on the fixed table 101. An electric telescopic rod 10 is fixedly embedded in the lower side space inside the fixed table 101, and the other end of the electric telescopic rod 10 is fixedly connected to the inner wall of the sliding table 102. The controller is electrically connected to the electric telescopic rod 10.

[0034] Specifically, the moving wheels facilitate the sliding of the sliding table 102. The protective cover 103 is used to intercept the material debris sputtered during the test to prevent the debris from splashing out and damaging the nearby test personnel. The sliding table 102 slides by the telescopic movement of the electric telescopic rod 10. When the sliding table 102 slides towards the fixed table 101 for storage, the occupied space of the device can be reduced, and at the same time, it is convenient to clean the debris that falls when the test material under the fixture 2 is broken. The sliding table 102 slides in the direction away from the fixed table 101 to open the device for testing and adjust the test distance. Moreover, the electric telescopic rod 10 contracts at a uniform speed, and a slow anti-stabbing test of the stabbing probe 352 can be carried out to improve the diversity of the test.

[0035] Please refer to the appendix Figure 6 , a U-shaped notch 104 is formed on the surface of the protective cover 103. A U-shaped sliding layer 105 is slidably connected to the inner side wall of the protective cover 103. Reset springs 106 are respectively fixedly connected to both sides of the sliding layer 105, and the other ends of the reset springs 106 are fixedly connected to the inner wall of the protective cover 103. Connecting ropes 107 are respectively fixedly connected to both sides of the sliding layer 105, and the other ends of the connecting ropes 107 are fixedly connected to the outer wall of the fixed table 101.

[0036] Specifically, the notch 104 is provided at the fixture 2 to facilitate the insertion of the plate-shaped material to be tested through the notch 104 into the fixture 2. The sliding layer 105 slides to the notch 104 under the elastic force of the return spring 106 and is used to block the notch 104 during the test to prevent debris from splashing out through the notch 104. The first connecting rope 107 is used to connect the sliding layer 105 and the fixed platform 101. When installing the plate-shaped material, the electric telescopic rod 10 extends to drive the sliding table 102 to move. The sliding of the sliding table 102 drives the sliding layer 105 to move. After the sliding layer 105 slides a certain distance, it stops moving under the length limit of the first connecting rope 107, while the sliding table 102 continues to move until the notch 104 is opened to facilitate the insertion of the plate-shaped material into the fixture 2. After the plate-shaped material is installed, the electric push rod 16 contracts a short distance, so that the sliding layer 105 blocks the notch 104 again under the action of the return spring 106.

[0037] Please refer to the appendix Figure 3 - appendix Figure 7 , the connecting shaft 8 adopts a torsion spring rotating shaft. The inner side wall of the protective cover 103 is slidably connected with a sliding seat 108. The outer wall of the sliding seat 108 is fixedly connected with a second connecting rope 109, and the other end of the second connecting rope 109 is fixedly connected with the outer wall of the rotating table 31. The inner side wall of the protective cover 103 is fixedly connected with a limiting plate 110. The upper surface of the rotating table 31 is fixedly provided with a limiting member 9. The distance between the limiting plate 110 and the limiting member 9 is the same as the width of the rotating table 31. The rotating table 31 is fixed in position when it is located between the limiting plate 110 and the limiting member 9.

[0038] Specifically, one side of the rotating table 31 abuts against the limiting member 9 by the torsion force of the torsion spring rotating shaft, and when it moves into the protective cover 103, the other side abuts against the limiting plate 110, thereby restricting the rotating table 31 so that the rotating table 31 is coaxially arranged with the test table 1, enabling the test piece 35 to face the material to be tested directly for testing. When replacing the test piece 35, the electric telescopic rod 10 extends to drive the protective cover 103 to separate from the rotating table 31. After the rotating table 31 moves out of the protective cover 103 for a certain distance, due to the length limit of the second connecting rope 109, the rotating table 31 will be gradually pulled to rotate, making the test piece 35 rotate outwards, thus facilitating the test personnel to replace the test piece 35.

[0039] Please refer to the appendix Figure 8 , the fixture 2 includes a support plate 201. The bottom end of the support plate 201 is rotatably connected to the upper surface of the test table 1. The surface of the support plate 201 is provided with a convex installation groove 202. The lower side wall of the test table 1 is fixedly connected with an installation seat 6. The upper side wall of the installation seat 6 is rotatably connected with a cylinder 7 through a shaft. The driving end of the cylinder 7 is rotatably connected to the outer wall of the support plate 201. The controller is electrically connected to the cylinder 7.

[0040] Specifically, during use, the controller controls the operation of the cylinder 7. The cylinder 7 extends to push the support plate 201 to rotate vertically. The plate-shaped material to be tested is inserted into the inside of the installation groove 202 for testing. Both sides of the installation groove 202 are open, facilitating the insertion of materials with different lengths and thicknesses without the need to cut the materials, thus improving the working efficiency of the test.

[0041] Please refer to the appendix Figure 8 , a plurality of convex layers 203 are formed by the outward convexity of the lower side wall of the support plate 201. A chute 204 is provided on the upper surface of the convex layer 203. A limiting clamping plate 205 is slidably connected to the inner wall of the chute 204. An installation frame 206 is fixedly connected to the upper surface of the convex layer 203. The installation frame 206 is made of ferromagnetic material. A plurality of compression springs 207 are fixedly connected to the opposite side of the installation frame 206 and the limiting clamping plate 205. An inclined cut is provided on the upper surface of the limiting clamping plate 205, which is used to guide the plate-shaped material to be inserted between the limiting clamping plate 205 and the installation groove 202.

[0042] Specifically, the convex layer 203 is used to fix the installation frame 206. Through the elastic force of the compression spring 207, one end of the limiting clamping plate 205 is lower than the inner wall of the installation groove 202. Thus, when the plate-shaped material is inserted into the inside of the installation groove 202, the limiting clamping plate 205 elastically clamps the plate-shaped material for clamping and fixing.

[0043] Please refer to the appendix Figure 9 , a detection groove 11 is provided on the surface of the support plate 201. A detection plate 12 is slidably connected to the inner wall of the detection groove 11. A pressure sensor 13 is fixedly arranged at the center of the detection groove 11. The controller is electrically connected to the pressure sensor 13. The controller is electrically connected to a data recording and storage module, which is used to record and store the detection data of the pressure sensor 13. When the detection plate 12 abuts against the pressure sensor 13, a part of the area will protrude from the detection groove 11, so that the detection plate 12 and the limiting clamping plate 205 cooperate to clamp the test material. A rubber pad is fixedly arranged on the side of the detection plate 12 that fits the material to increase the friction force.

[0044] Specifically, the pressure sensor 13 is coaxially arranged with the test piece 35. When the test piece 35 impacts the test material, the impact force will be transmitted to the detection plate 12, and the detection plate 12 will transmit the impact force to the pressure sensor 13, so as to detect the impact force received by the test material through the pressure sensor 13.

[0045] Please refer to the appendix Figure 8 , an inclined sliding bracket 210 is fixedly connected to the lower side wall of the convex layer 203. A counterweight 211 is slidably connected to the inner wall of the sliding bracket 210. A magnet 212 is embedded on the surface of the counterweight 211.

[0046] Specifically, when clamping the test material of fabric material, since the material is relatively soft and not convenient for vertical clamping, the cylinder 7 is contracted to pull the support plate 201 downward to rotate more than 90 degrees until the top of the sliding bracket 210 is initially facing downward. At this time, the counterweight block 211 slides downward, causing the magnetic block 212 to slide to the top of the limit card plate 205. The limit card plate 205 is attracted by the magnetic block 212, causing the limit card plate 205 to move upward, so that the limit card plate 205 no longer presses against the outer wall of the detection plate 12, thereby This makes it easier to lay the flexible material on the detection plate 12. After the flexible material is laid, the control cylinder 7 is extended. When the support plate 201 rotates horizontally, the inclination direction of the sliding bracket 210 changes, causing the counterweight block 211 to slide again. The sliding of the counterweight block 211 causes the magnetic block 212 to be offset from the limiting card plate 205 and no longer applies magnetic adsorption force, so that the limiting card plate 205 presses the flexible material through the elastic force of the compression spring 207, so that the flexible material will not loosen and fall when the support plate 201 rotates vertically later.

[0047] Please see attached Figure 10 A plurality of limiting protrusions 14 are fixedly connected to the side wall of the mounting frame 206, a small annular channel 15 is provided on the surface of the detection plate 12, a large annular channel is provided on the surface of the support plate 201, a mounting cylinder 18 is fixedly connected to the outer wall of the support plate 201 corresponding to the large annular channel, an electric push rod 16 is fixedly connected to the center of the mounting cylinder 18, a clamping cylinder 17 is fixedly connected to the driving end of the electric push rod 16, the controller is electrically connected to the electric push rod 16, the small annular channel 15, the large annular channel and the clamping cylinder 17 and the test piece 35 are coaxially arranged, the diameter of the clamping cylinder 17 is smaller than the large annular channel and larger than the small annular channel 15, an annular pressure detection device is fixedly provided on one end of the clamping cylinder 17 against the detection plate 12, and the annular pressure detection device is electrically connected to the controller for detecting the impact force of the flexible fabric.

[0048] Specifically, the small annular channel 15 and the clamping cylinder 17 are used to avoid obstruction to the movement of the test piece 35. After the flexible material is vertically clamped, the controller controls the electric push rod 16 to run. The electric push rod 16 extends to drive the clamping cylinder 17 to pass through the large annular channel and press against the detection plate 12 to push the detection plate 12 to move. The movement of the detection plate 12 pushes the limit card plate 205 to move until the limit card plate 205 presses against the limit protrusion 14. At this time, the flexible material can be clamped and fixed to prevent the elastic pressure of the limit card plate 205 from being insufficient during the test, causing the flexible material test to be impacted and wrinkled, affecting the test effect.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for bulletproof and stab-proof materials, comprising a testing table (1), characterized in that: A fixture (2) is installed on one side of the test bench (1), and the fixture (2) is used to fix the material to be tested. A test assembly (3) is installed on the upper surface of the test bench (1), and the test assembly (3) comprises a rotating table (31). The bottom end of the rotating table (31) is rotatably connected to the test bench (1) via a connecting shaft (8). An outer barrel (32) is fixedly connected to the upper side wall of the rotating table (31), and an inner barrel (33) is slidably connected to the inner wall of the outer barrel (32). One end of the inner barrel (33) is rotatably connected to the test bench (1). A rotating gun head (34) is connected, one end of the rotating gun head (34) is fastened to a test piece (35) by means of bolts, a connecting shaft (36) is fixedly connected to the inner wall of the rotating gun head (34), the other end of the connecting shaft (36) passes through the inner gun barrel (33) and is fixedly connected to an impeller (37), an exhaust hole (4) is provided on the surface of the inner gun barrel (33), a high-pressure drive assembly (5) is fixedly arranged on the surface of the test bench (1), and the high-pressure drive assembly (5) is used to inject high-pressure gas into the interior of the outer gun barrel (32).

2. A testing device for bullet-proof and stab-proof materials according to claim 1, characterized in that: The high-pressure drive assembly (5) comprises an air compressor and an air storage tank which are connected to each other, and the air outlet of the air storage tank is fixedly connected to one end of the outer gun barrel (32) via an air supply pipe, and a solenoid valve is fixedly arranged on the air supply pipe.

3. A testing device for bullet-proof and stab-proof materials according to claim 1, characterized in that: The test piece (35) comprises a test bullet (351) and a piercing probe (352).

4. The testing device for bullet-proof and stab-proof materials according to claim 1, characterized in that: The test bench (1) comprises a fixed table (101) and a sliding table (102); the fixed table (101) and the sliding table (102) are slidably connected; a plurality of moving wheels are fixedly arranged on the lower surface of the sliding table (102); a U-shaped transparent protective cover (103) is fixedly connected to the upper surface of the sliding table (102); the connecting shaft (8) and the rotating table (31) are mounted on the fixed table (101); an electric telescopic rod (10) is embedded in the interior of the fixed table (101); and the other end of the electric telescopic rod (10) is fixedly connected to the inner wall of the sliding table (102).

5. A testing device for bullet-proof and stab-proof materials according to claim 4, characterized in that: A U-shaped notch (104) is provided on the surface of the protective cover (103); a U-shaped sliding layer (105) is slidably connected to the inner wall of the protective cover (103); return springs (106) are fixedly connected to both sides of the sliding layer (105); the other end of the return spring (106) is fixedly connected to the inner wall of the protective cover (103); a connecting rope (107) is fixedly connected to both sides of the sliding layer (105); the other end of the connecting rope (107) is fixedly connected to the outer wall of the fixed platform (101).

6. A testing device for bullet-proof and stab-proof materials according to claim 4, characterized in that: The connecting shaft (8) is a torsion spring rotating shaft, the inner side wall of the protective cover (103) is slidably connected to a sliding seat (108), the outer wall of the sliding seat (108) is fixedly connected to a second connecting rope (109), and the other end of the second connecting rope (109) is fixedly connected to the outer wall of the rotating platform (31), the inner side wall of the protective cover (103) is fixedly connected to a limiting plate (110), and a limiting member (9) is fixedly provided on the upper surface of the rotating platform (31).

7. The testing device for bullet-proof and stab-proof materials according to claim 1, characterized in that: The fixture (2) comprises a support plate (201), the bottom end of the support plate (201) being rotatably connected to the upper surface of the test bench (1), a convex mounting groove (202) being provided on the surface of the support plate (201), a mounting seat (6) being fixedly connected to the lower side wall of the test bench (1), an upper side wall of the mounting seat (6) being rotatably connected to a cylinder (7) via an axis, and a driving end of the cylinder (7) being rotatably connected to the outer wall of the support plate (201).

8. The testing device for bullet-proof and stab-proof materials according to claim 7, characterized in that: The lower side wall of the support plate (201) protrudes outward to form a plurality of protruding layers (203); a slide groove (204) is provided on the upper surface of the protruding layer (203); the inner wall of the slide groove (204) is slidably connected to a limit clamping plate (205); the upper surface of the protruding layer (203) is fixedly connected to a mounting frame (206); the mounting frame (206) is made of ferromagnetic material; and a plurality of compression springs (207) are fixedly connected to the opposite side of the mounting frame (206) and the limit clamping plate (205).

9. The testing device for bullet-proof and stab-proof materials according to claim 7, characterized in that: A detection groove (11) is provided on the surface of the support plate (201), a detection plate (12) is slidably connected to the inner wall of the detection groove (11), and a pressure sensor (13) is fixedly arranged at the center of the detection groove (11).

10. The testing device for bullet-proof and stab-proof materials according to claim 8, characterized in that: The lower side wall of the raised layer (203) is fixedly connected to an inclined sliding bracket (210), the inner wall of the sliding bracket (210) is slidably connected to a counterweight block (211), and the surface of the counterweight block (211) is embedded with a magnetic block (212).

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