Multi-layer composite quick-unfolding anti-explosion blanket

Abstract

According to the technical scheme, the multi-layer composite rapid-unfolding anti-explosion blanket comprises a fragment blocking layer, a shock wave dissipation layer and an energy absorption layer which are sequentially arranged in a stacked mode from top to bottom, the three layers of structures are integrally packaged in a protection layer, elastic pieces are arranged on the periphery of the anti-explosion blanket and sewn in a sewing layer, and the elastic pieces are arranged on the periphery of the anti-explosion blanket. The anti-explosion blanket is arranged in the protective layer and connected to the periphery of the protective layer, so that the anti-explosion blanket can be wound and stored and can be automatically unfolded when released, handle grooves are formed in the outer sides of the elastic pieces in a penetrating mode, connecting blocks are arranged at the corners of the anti-explosion blanket, and rapid splicing of the multiple blankets is achieved through the connecting blocks. Through the multi-layer composite structure, effective layered absorption and blocking of explosion shock wave energy and high-speed fragments are achieved, the protection performance is remarkably improved, meanwhile, the anti-explosion blanket is of a winding or folding structure and is provided with a rapid unfolding device, and rapid deployment under the emergency condition is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety protection equipment, and particularly relates to a multi-layer composite rapid deployment explosion-proof blanket. BACKGROUND

[0002] The explosion-proof blanket is a portable protective equipment used for covering suspicious explosives, which can maximize the absorption of shock wave energy and block high-speed fragments when an explosion occurs, thereby reducing the damage to surrounding personnel and equipment. It is widely used in gas stations, explosive disposal sites, important security sites and anti-terrorism operations.

[0003] The existing explosion-proof blanket is mostly made of a single thick material (such as multi-layer Kevlar fabric) or a simple metal-fabric composite structure. These structures have certain protective ability, but have obvious defects: 1. Contradiction between weight and flexibility: In order to achieve the protection level, it is often very heavy, leading to difficulty in carrying and deploying, and poor flexibility.

[0004] 2. Single protection mode: It has good protection against cutting and penetration of high-speed fragments, but the absorption capacity of the shock wave is limited, and the shock wave will be transmitted through the rigid material, causing secondary damage (such as internal organ injury).

[0005] 3. Lack of intelligent response: The mechanical response of traditional materials is fixed when they are impacted, and cannot adaptively adjust to different speeds and different forms of threats (such as slow extrusion or high-speed impact).

[0006] 4. Slow deployment speed: Due to the large weight and volume, the deployment process takes a long time, which may delay the opportunity in the emergency situation.

[0007] Therefore, there is an urgent need for a new type of explosion-proof blanket that has light weight, high flexibility, excellent comprehensive protection ability and rapid deployment ability. SUMMARY

[0008] To solve the above technical problems, the present application realizes efficient and cooperative protection of explosion shock wave and fragments through innovative material combination and structure design, and has the advantages of light weight, good flexibility and rapid deployment, thereby solving the problems in the background art.

[0009] The present application adopts the following technical scheme: A multi-layer composite rapid deployment explosion-proof blanket, comprising a fragment blocking layer, an impact wave dissipation layer and an energy absorption layer which are sequentially stacked from top to bottom, the three-layer structure is integrally packaged in a protective layer, an elastic sheet is arranged around the explosion-proof blanket, the elastic sheet is stitched in a stitching layer and connected to the periphery of the protective layer, so that the explosion-proof blanket can be wound and stored and automatically deployed when released.

[0010] The overall structure realizes layered and efficient protection of explosion shock wave and fragments through the three-layer synergistic mechanism of "fragment blocking-shock wave dissipation-energy absorption". The fragment blocking layer preferentially intercepts high-speed fragments, the shock wave dissipation layer disperses explosion energy, the energy absorption layer further attenuates the shock wave, and the comprehensive protection performance is improved; the protective layer enhances the durability; the elastic sheet and the handle groove make the explosion-proof blanket light in weight, flexible, easy to wind and store, and quickly deploy, and the deployment time is shortened to several seconds, which is suitable for emergency situations.

[0011] Preferably, the fragment blocking layer is made of at least one of the following: an ultra-high molecular weight polyethylene fiber, an aramid fiber, a ceramic composite fiber, a glass reinforced fiber, a basalt fiber, a carbon fiber, or a PBO fiber fabric.

[0012] These high-strength fiber materials have excellent tensile strength and toughness, can effectively block and bind high-speed fragments generated by explosion, and prevent penetration; at the same time, the material is lightweight, which reduces the overall weight of the explosion-proof blanket (significantly reduces the weight compared with traditional Kevlar blanket), improves portability and flexibility, and is convenient for single or multiple people to carry.

[0013] Preferably, the shock wave dissipation layer comprises a sealed capsule, and the capsule is filled with a shear thickening fluid mixed by polyethylene glycol and silicon dioxide micro-nano particles.

[0014] The shear thickening fluid has non-Newtonian fluid characteristics, is flexible and easy to deform in normal state, becomes hard instantly under explosion shock ("strong when strong"), quickly dissipates shock wave energy and disperses it to a larger area, reduces the transmission of shock wave overpressure, and avoids secondary damage (such as internal organ injury); this adaptive response improves the protection adaptability to sudden explosion.

[0015] Preferably, the energy absorption layer is at least one of the following: closed-cell aluminum foam, polyurethane foam, polyolefin foam, rubber foam, or silicone foam.

[0016] These porous foam materials absorb the residual shock wave kinetic energy through plastic deformation, further reducing the penetration energy; the closed-cell structure provides good cushioning and energy dissipation, enhances the overall impact resistance, while maintaining lightweight and flexibility, facilitating winding storage.

[0017] Preferably, the protective layer is made of aramid oxford cloth, and the outer side of the protective layer is divided into multiple areas by a sewing line.

[0018] The aramid oxford cloth is wear-resistant and resistant to environmental erosion, prolonging the service life of the explosion-proof blanket; the segmented sewing line design enhances the structural stability, prevents interlayer displacement, limits damage spread when locally damaged, and maintains the overall protection integrity.

[0019] Preferably, the edge corner position of the explosion-proof blanket is provided with a connecting block, and the quick splicing of multiple blankets is realized through the connecting block, the outer side of the connecting block is provided with a locking groove, a longitudinal guide groove is arranged in the locking groove, and an arc-shaped groove is arranged at the bottom of the locking groove and communicated with the guide groove.

[0020] The connecting block and the connecting block design support the splicing of multiple blankets, flexible expansion of the protection area, and adaptation to different scenes. The connecting block serves as a splicing interface, and through the mechanical design of the locking groove, the guide groove and the arc-shaped groove, accurate positioning and firm locking are ensured when multiple blankets are docked; the guide groove guides the insertion process, and the arc-shaped groove provides a rotating stop to realize quick and small-error splicing and improve operation efficiency.

[0021] Preferably, four groups of rotatable insertion rods are arranged at the upper end of the connecting block and are in movable insertion fit with the locking groove, the bottom of the insertion rod is provided with a guide block, the guide block is in sliding insertion fit with the guide groove, and the guide block is in rotating connection with the arc-shaped groove.

[0022] The insertion rod and the guide block mechanism realize the integrated operation of "insertion-rotation-locking", simplify the splicing process; the guide block slides along the guide groove to ensure smooth insertion, and after rotation, it is clamped into the arc-shaped groove to form mechanical interlocking, preventing accidental loosening, enhancing the structural stability after splicing, and being suitable for quick deployment in anti-terrorism or explosive disposal sites.

[0023] Preferably, a rotating shaft is rotatably connected to the central position of the upper end of the connecting block, gear plates are fixedly connected to the upper end of the rotating shaft and the upper end of the four groups of insertion rods, the gear plates at the upper end of the rotating shaft are engaged to drive the four groups of insertion rods to rotate synchronously, so that the guide block slides into the guide groove and is clamped into the arc-shaped groove for locking.

[0024] The gear plate engagement design realizes synchronous movement of the four groups of insertion rods, ensures uniform force during splicing, and avoids single-point failure; synchronous rotation improves operation convenience, non-professionals can also quickly complete locking, reduces deployment time, and improves emergency response safety.

[0025] Preferably, a handle rod is fixedly connected to the upper end of the rotating shaft, a positioning line that is docked with the handle rod is arranged at the upper end of the fixed block, and a coil spring is arranged at the upper end of the rotating shaft and the upper end of the connecting block, the coil spring is sleeved outside the rotating shaft and provides automatic rebound force.

[0026] The handle rod and the positioning line provide intuitive operation guidance, making it convenient for users to align and rotate; the automatic rebound force of the coil spring makes the insertion rod automatically reset after locking, reduces manual operation steps, improves splicing efficiency and reliability, and is especially suitable for high-pressure environments.

[0027] Preferably, the explosion-proof blanket can be wound into a cylindrical shape, and the insertion rod at the bottom of the connecting block is clamped and fixed in the wound state.

[0028] The winding storage greatly reduces the volume, facilitates transportation and carrying; the plug-in rod clamping design prevents accidental loosening in the winding state, ensures the storage stability, and when used, the elastic sheet can be quickly released to be unfolded, realizes "taking and using", and optimizes the storage and deployment process.

[0029] Compared with the existing technology, the application has the following advantages: The three-layer synergistic mechanism of "fragment blocking- shock wave dissipation-energy absorption" is adopted, different hazards caused by explosion are effectively protected, and the comprehensive protection efficiency is high. Among them, advanced materials such as high-strength fibers and non-Newtonian fluids are used, which significantly reduces the weight compared with traditional explosion-proof blankets under the premise of ensuring the protection level, and is flexible under normal conditions, convenient to store and carry; and the introduction of the non-Newtonian fluid layer makes the explosion-proof blanket have the intelligent response characteristic of "strong when strong", and the adaptability to sudden explosion is stronger.

[0030] On this basis, the connecting block can be wound for convenient carrying, and the elastic sheet is quickly unfolded when opened, so that non-professionals can also complete the deployment within a few seconds, greatly improving the efficiency and safety of responding to emergencies.

[0031] On this basis, the connecting block can be wound for convenient carrying, and the elastic sheet is quickly unfolded when opened, so that non-professionals can also complete the deployment within a few seconds, greatly improving the efficiency and safety of responding to emergencies. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The structure of the application is shown in the figure; Figure 2 The structure of the application is shown in the figure; Figure 3 The structure of the application is shown in the figure; Figure 4 The structure of the application is shown in the figure; Figure 5 The structure of the application is shown in the figure; Figure 6 The structure of the application is shown in the figure; Figure 7 The structure of the application is shown in the figure;

[0033] Main symbol explanation: 1 - Fragment barrier, 2 - Shock wave dissipation layer, 3 - Energy absorption layer, 4 - Protective layer, 401 - Splitting suture, 5 - Elastic sheet, 6 - Suture layer, 7 - Handle slot, 8 - Link block, 9 - Locking slot, 901 - Guide slot, 902 - Arcuate slot, 10 - Connecting block, 1001 - Inserting rod, 1002 - Guide block, 1003 - Rotation shaft, 1004 - Gear disc, 1005 - Handle rod, 1006 - Positioning line, 1007 - Coil spring. DETAILED DESCRIPTION In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In the description of the present application, "a plurality of" means two or more, unless otherwise explicitly specified and limited.

[0035] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0037] Please refer to Figures 1-7A multi-layer composite rapid deployment blast blanket, which core is a three-layer composite structure, the uppermost layer is a fragment barrier layer 1, which in this embodiment is made of a plurality of layers of stitched unidirectional fabric of ultra-high molecular weight polyethylene fiber, the middle layer is a shock wave dissipation layer 2, which is composed of a plurality of independent sealed capsules made of high-strength polymer film, the capsules are filled with a shear thickening fluid composed of polyethylene glycol (PEG) and nano-silicon dioxide particles, and the lowermost layer is an energy absorption layer 3, which in this embodiment is selected to be a closed-cell aluminum foam plate. The three-layer structure is fixed together by high-strength stitching thread or high-temperature resistant adhesive, and then the whole is packaged in a protective layer 4 made of aramid oxford cloth, which enhances the durability and environmental adaptability of the whole.

[0038] When an explosion occurs, the high-speed fragments generated by the explosion first impact the fragment barrier layer 1, which is effectively blocked and restrained by the high-strength fiber. Subsequently, the powerful shock wave acts on the shock wave dissipation layer 2, causing the non-Newtonian fluid in it to instantly harden, rapidly dispersing the shock wave energy to a larger area. Finally, the remaining shock wave energy is largely absorbed by the aluminum foam of the energy absorption layer 3 through plastic deformation, greatly reducing the shock wave overpressure and kinetic energy that penetrates the blast blanket, thereby effectively protecting the personnel and equipment below and around.

[0039] Based on this, for easy storage and transportation, the entire blast blanket can be wound into a cylindrical shape, as shown in the attached Figure 7 , the protective layer 4 of the blast blanket is provided with elastic pieces 5 around it, and is stitched in the stitching layer 6, when it is needed to be used, the operator opens the limiting structure of the blast blanket, which can be rapidly deployed under the elastic force release of the elastic pieces 5. At the same time, the outer side of the stitching layer 6 is uniformly provided with handle grooves 7, which is convenient for two or four people to carry together.

[0040] At the same time, the four corner positions of the blast blanket are provided with connection blocks 8, which can make multiple blast blankets be easily spliced into a larger protection area, the outer side of the connection block 8 is provided with a locking groove 9, as shown in the attached Figure 4When the four groups of explosion-proof blankets are spliced, the abutment blocks 8 at the four corners are butted against each other, the connecting blocks 10 are used to quickly lock the abutted abutment blocks 8, and the quick splicing of the explosion-proof blankets is completed, thereby forming a larger explosion-proof blanket for explosion-proof use. Specifically, the outer side of the locking groove 9 is longitudinally provided with a guide groove 901 communicating with the inner cavity, and the bottom of the locking groove 9 is provided with an arc-shaped groove 902 communicating with the bottom of the guide groove 901; meanwhile, the outer side of the connecting block 10 is longitudinally rotatably connected with four groups of insertion rods 1001, after the four groups of abutment blocks 8 are spliced, the four groups of insertion rods 1001 are butted against the locking grooves 9 at the upper ends of the four groups of abutment blocks 8, the outer wall at the bottom of the insertion rod 1001 is fixedly connected with a guide block 1002, the guide block 1002 is in clamping cooperation with the guide groove 901, and when the insertion rod 1001 is inserted along the locking groove 9 in the longitudinal direction, the guide block 1002 also slides and is inserted along the guide groove 901 in the longitudinal direction, when the guide block 1002 is clamped into the bottom of the guide groove 901, the insertion rod 1001 can be rotated, so that the guide block 1002 is clamped into the arc-shaped groove 902, and the limiting locking of the insertion rod 1001 and the abutment block 8 is completed, that is, the connecting block 10 is used to complete the quick splicing and limiting of the four groups of explosion-proof blankets.

[0041] On this basis, the connecting block 10 is rotatably connected with a rotating shaft 1003 at the upper end near the center, the upper end of the rotating shaft 1003 and the upper ends of the four groups of insertion rods 1001 are fixedly sleeved with gear plates 1004, and the gear plate 1004 at the upper end of the rotating shaft 1003 is in meshing cooperation with the gear plates 1004 at the upper ends of the four groups of insertion rods 1001 in sequence. The bottom of the gear plate 1004 is connected to the upper end of the connecting block 10 through a coil spring 1007, the coil spring 1007 is sleeved on the outer side of the rotating shaft 1003, a handle rod 1005 is arranged above the gear plate 1004 at the upper end of the rotating shaft 1003, and the upper end of the connecting block 10 is provided with a positioning line 1006 matched with the handle rod 1005. The handle rod 1005 is rotated to drive the rotating shaft 1003 to rotate, in the rotating process, the gear plate 1004 at the upper end of the rotating shaft 1003 meshes to drive the gear plate 1004 at the upper end of the insertion rod 1001, the insertion rod 1001 is driven to rotate, until the handle rod 1005 is butted against the positioning line 1006, at this time, the insertion rod 1001 and the guide block 1002 outside are butted against the locking groove 9 and the guide groove 901, the connecting block 10 is pressed down in turn, and the insertion rod 1001 is inserted into the locking groove 9, then the handle rod 1005 is loosened, the rotating shaft 1003 is reversely rotated under the elastic recovery of the coil spring 1007, that is, the multiple groups of insertion rods 1001 are synchronously rotated, so that the guide block 1002 outside is clamped into the arc-shaped groove 902 at the bottom of the locking groove 9, and the quick splicing and limiting of the four groups of explosion-proof blankets are completed.

[0042] It also needs to be supplemented here that, referring to the attached drawings (the connecting block 10 is not shown) 7, when the explosion-proof blanket is rolled up, the connecting block 10 can be directly clamped on the upper end of the rolled-up explosion-proof blanket, and the multiple groups of insertion rods 1001 at the bottom of the connecting block 10 just play the effect of clamping and limiting, and at the same time, the connecting block 10 is clamped into the upper end and the bottom of the rolled-up explosion-proof blanket, at this time, the connecting block 10 plays the effect of clamping and fixing the rolled-up explosion-proof blanket, avoiding the explosion-proof blanket from being scattered.

[0043] The above embodiments are the preferred embodiments of the present application, but the embodiments of the present application are not limited by the above embodiments, and any changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principles of the present application should be equivalent replacement methods and are included in the protection scope of the present application.

[0044] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

Claims

1. A multi-layered composite rapid deployment blast blanket, characterized in that, The three layers are integrally encapsulated in a protective layer (4), and the periphery of the blast blanket is provided with elastic sheets (5) which are stitched in a stitching layer (6) and connected to the periphery of the protective layer (4), so that the blast blanket can be wound and stored and automatically unfolded when released. The fragment barrier layer (1) is made of at least one of the following: ultra-high molecular weight polyethylene fiber, aramid fiber, ceramic composite fiber, glass reinforced fiber, basalt fiber, carbon fiber or PBO fiber fabric.

2. A multi-layered composite rapidly deployable blast blanket according to claim 1, wherein, The shock wave dissipation layer (2) comprises a sealed capsule filled with a shear thickening fluid composed of polyethylene glycol and silica microparticles.

3. A multi-layered composite rapidly deployable blast blanket according to claim 2, wherein, The energy absorption layer (3) is at least one of closed-cell aluminum foam, polyurethane foam, polyolefin foam, rubber foam or silicone foam.

4. A multi-layered composite rapidly deployable blast blanket according to claim 3, wherein, The protective layer (4) is made of aramid oxford fabric, and the outer side of the protective layer (4) is divided into multiple areas by stitching (401).

5. A multi-layered composite rapidly deployable blast blanket according to claim 4, wherein, The edge position of the blast blanket is provided with a connecting block (8), and the connecting block (10) is used for quick splicing of multiple blankets, the outer side of the connecting block (8) is provided with a locking groove (9), the locking groove (9) is provided with a longitudinal guide groove (901), and the bottom of the locking groove (9) is provided with an arc-shaped groove (902) communicated with the guide groove (901).

6. A multi-layered composite rapidly deployable blast blanket according to claim 5, wherein, The upper end of the connecting block (10) is provided with four groups of rotatable insertion rods (1001), the insertion rods (1001) are movably inserted into the locking groove (9), the bottom of the insertion rods (1001) is provided with a guide block (1002), the guide block (1002) is slidably inserted into the guide groove (901) and rotatably connected with the arc-shaped groove (902).

7. A multi-layered composite rapidly deployable blast blanket according to claim 6, wherein, The upper end of the connecting block (10) is rotatably connected with a rotating shaft (1003), the upper end of the rotating shaft (1003) and the upper end of the four groups of insertion rods (1001) are fixedly connected with a gear disc (1004), the gear disc (1004) at the upper end of the rotating shaft (1003) is driven to mesh and drive the four groups of insertion rods (1001) to rotate synchronously, so that the guide block (1002) is slid into the guide groove (901) and then locked in the arc-shaped groove (902).

8. A multi-layered composite rapidly deployable blast blanket according to claim 7, wherein, The upper end of the rotating shaft (1003) is fixedly connected with a handle rod (1005), the upper end of the connecting block (10) is provided with a positioning line (1006) which is connected with the handle rod (1005), the gear disc (1004) at the upper end of the rotating shaft (1003) is provided with a coil spring (1007) on the upper end of the connecting block (10), the coil spring (1007) is sleeved on the outer side of the rotating shaft (1003) and provides automatic rebound force.

9. A multi-layered composite rapidly deployable blast blanket according to claim 8, wherein, The blast blanket can be wound into a cylindrical shape and fixed in a wound state by the insertion rods (1001) at the bottom of the connecting block (10).

10. A multi-layered composite rapidly deployable blast blanket according to claim 9, wherein, ​

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