Airtight explosive ordnance disposal suit convenient to put on and take off

Abstract

The utility model discloses a kind of closed explosive ordnance removal clothes convenient to put on and take off, including explosive ordnance removal coat and explosive ordnance removal trousers, both are equipped with put on and take off structure and sealing structure, and are connected to form closed whole by sealing structure. Explosive ordnance removal coat chest protection structure is sequentially composed of sealing layer, soft protection layer, first flame-retardant protection layer, hard protection layer and second flame-retardant protection layer. Put on and take off structure adopts double-opening resin quick-release zipper, coat and trousers are realized quick put on and take off by zipper of double arms upper side and trousers leg outer side respectively;Sealing structure utilizes protective collar, coat low collar and the sealing adhesive fastener band of trousers waist, realizes the close sealing of helmet and the overall sealing of coat and trousers. Sealing layer adopts double-sided sealing rubber layer and honeycomb structure layer heat sealing to form closed space attenuation shock wave, soft and hard protection layer cooperates and resists high-speed fragment, and flame-retardant protection layer uses aramid fabric to prevent flame burning. This explosive ordnance removal clothes gives consideration to quick put on and take off and high-efficiency protective performance, and can effectively guarantee explosive ordnance removal personnel safety.

Description

Technical Field

[0001] This utility model relates to a sealed bomb disposal suit that is easy to put on and take off, belonging to the field of safety protection technology. Background Technology

[0002] As the core personal protective equipment for ensuring the safety of bomb disposal personnel, the protective performance and donning / dosing efficiency of bomb disposal suits have always been a key focus of the industry. With the increasing complexity of explosive threats and the improvement of protection standards, traditional bomb disposal suits have gradually revealed their limitations in dealing with shock wave protection and the need for rapid donning and dosing.

[0003] Early assessments of bomb disposal suits' protection against blast waves focused primarily on the overall structure, lacking design considerations for overpressure protection in critical areas such as the chest. Research indicates that overpressure from blast waves is a major cause of internal organ damage, and a closed-loop protective structure can attenuate blast wave energy, keeping overpressure in critical areas below the human injury threshold. However, traditional closed-loop bomb disposal suits are heavy due to the layering of multiple protective materials, have cumbersome donning and doffing procedures requiring assistance, and struggle to achieve blast wave attenuation, high-speed fragmentation protection, and flame retardancy, often resulting in excessive rigidity and restricted movement. Utility Model Content

[0004] Therefore, this utility model provides a closed-type bomb disposal suit that is easy to put on and take off, solving the problems of inconvenient putting on and taking off and insufficient shock wave resistance of existing bomb disposal suits.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a closed-type bomb disposal suit that is easy to put on and take off, including a bomb disposal top and bomb disposal pants;

[0006] Both the bomb disposal jacket and the bomb disposal pants are equipped with a donning and doffing structure and a sealing structure; the bomb disposal jacket and the bomb disposal pants are connected by the sealing structure to form a sealed whole;

[0007] The bomb disposal suit's chest protection structure includes, in sequence, a sealing layer, a soft protective layer, a first flame-retardant protective layer, a hard protective layer, and a second flame-retardant protective layer.

[0008] As a preferred embodiment of a closed-type bomb disposal suit that is easy to put on and take off, the donning and doffing structure includes:

[0009] The bomb disposal jacket features a quick-release zipper.

[0010] The quick-release zipper is located on the bomb disposal pants.

[0011] As a preferred option for a closed-type bomb disposal suit that is easy to put on and take off, the quick-release zipper of the jacket is located above the arms of the bomb disposal jacket. The quick-release zipper of the jacket is a No. 10 double-opening resin quick-release zipper, which is used to connect / separate the front and back pieces of the bomb disposal jacket.

[0012] As a preferred option for a closed-type bomb disposal suit that is easy to put on and take off, the quick-release zipper of the pants is located on the outside of the pant leg. The quick-release zipper is a No. 10 double-opening resin quick-release zipper, which is used to pull off and disconnect the pant body.

[0013] As a preferred embodiment of a closed-type bomb disposal suit that is easy to put on and take off, the sealing structure includes:

[0014] The first quick-release Velcro straps on both sides of the collar of the bomb disposal jacket;

[0015] The second jacket sealing quick-release Velcro strap is 5cm from the low collar of the bomb disposal jacket;

[0016] The bomb disposal pants have a 5cm sealing Velcro strap at the waist;

[0017] The first upper garment sealing quick-release hook and loop strap is used to fit and seal with the helmet;

[0018] After the second quick-release hook and loop fastener on the top is connected to the hook and loop fastener on the pants, an overall seal is formed between the bomb disposal top and the bomb disposal pants.

[0019] As a preferred option for a closed-type bomb disposal suit that is easy to put on and take off, the sealing layer forms a sealed space by heat-sealing a double-sided sealing rubber layer and a honeycomb structure layer, which is used to attenuate the energy of the shock wave.

[0020] The soft protective layer and the hard protective layer work together to protect against high-speed fragments.

[0021] As a preferred option for a closed-type bomb disposal suit that is easy to put on and take off, the double-sided sealing rubber layer of the sealing layer is a mesh fabric with an aramid cloth in the middle and polyurethane adhesive on both sides; the surface of the honeycomb structure layer in the middle of the sealing layer has honeycomb-shaped holes distributed on it.

[0022] As a preferred option for a closed-type bomb disposal suit that is easy to put on and take off, the soft protective layer is made of single-layer PI material with corners of 0°, 30°, and 60°, which is then sewn together.

[0023] The rigid protective layer is formed by laminating 4UDPE non-woven fabric with a single layer density of 200g / m2.

[0024] As a preferred option for a closed-type bomb disposal suit that is easy to put on and take off, both the first flame-retardant protective layer and the second flame-retardant protective layer are made of aramid flame-retardant and antistatic fabric with a surface density of 250g / m2.

[0025] This utility model has the following advantages:

[0026] First, the bomb disposal jacket and bomb disposal pants are equipped with independent donning and doffing structures (quick-release zippers and quick-release hook and loop fasteners). By pulling out the zipper and quickly separating with the hook and loop fasteners, the donning and doffing time can be greatly shortened, meeting the needs of emergency mission response.

[0027] Secondly, the bomb disposal jacket and pants are connected by a sealed structure to form a closed whole. Combined with the multi-layered composite design of the chest protection structure, it effectively attenuates the energy of the blast shock wave, controls the peak overpressure of the chest within the damage threshold, and improves the impact resistance.

[0028] Third, the chest protection structure achieves comprehensive protection against multiple threats such as explosive impact, fragments, and flames through a layered design of a sealing layer (shock wave attenuation), a soft / hard protective layer (high-speed fragment interception), and a flame-retardant protective layer (flame-retardant and anti-static). This ensures the safety of bomb disposal personnel. Attached Figure Description

[0029] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0031] Figure 1 A schematic diagram of the structure of the easily donned and doffable sealed bomb disposal suit jacket provided in this embodiment of the utility model;

[0032] Figure 2 A schematic diagram of the structure of the easily donned and doffable sealed bomb disposal suit trousers provided in this embodiment of the utility model;

[0033] Figure 3 A schematic diagram of the overall structure of a closed-type bomb disposal suit that is easy to put on and take off, provided for an embodiment of this utility model;

[0034] Figure 4 A schematic diagram of the chest protection composite structure of the easily donned and undressed sealed bomb disposal suit / top provided for an embodiment of this utility model.

[0035] Figure 5 A schematic diagram of the sealing layer of the chest protection composite structure provided in this embodiment of the utility model;

[0036] Figure 6 A schematic diagram of a honeycomb structure provided for an embodiment of this utility model.

[0037] In the image, 1. Bomb disposal jacket; 2. Bomb disposal trousers; 3. Donning and doffing structure; 4. Sealing structure; 5. Protective structure;

[0038] 311. Quick-release zipper on top; 312. Quick-release zipper on pants;

[0039] 40. First jacket with quick-release hook and loop fastener; 41. Second jacket with quick-release hook and loop fastener; 42. Trousers with hook and loop fastener;

[0040] 51. Sealing layer; 52. Soft protective layer; 53. First flame-retardant protective layer; 54. Hard protective layer; 55. Second flame-retardant protective layer. Detailed Implementation

[0041] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a closed-type bomb disposal suit that is easy to put on and take off, including a bomb disposal top 1 and bomb disposal pants 2. The bomb disposal top 1 and bomb disposal pants 2 constitute the main structure of the bomb disposal suit, wrapping the human body to form a protective space. The two must have a tight connection and efficient putting on and taking off function to meet the safety and timeliness requirements of bomb disposal operations.

[0043] The bomb disposal suit 1 and bomb disposal pants 2 are equipped with a donning and doffing structure 3 and a sealing structure 4. The bomb disposal suit 1 and bomb disposal pants 2 are connected by the sealing structure 4 to form a sealed whole. The donning and doffing structure 3 uses components such as quick-release zippers, which allow for quick donning and doffing of the bomb disposal suit. The sealing structure 4 is tightly fitted with components such as hook and loop fasteners to form a sealed space. Its principle is to block the shock wave, fragments and harmful gases generated by the explosion from entering the bomb disposal suit and ensure the safety of the bomb disposal personnel.

[0044] The bomb disposal vest 1's chest protection structure 5 comprises a sealing layer 51, a soft protective layer 52, a first flame-retardant protective layer 53, a hard protective layer 54, and a second flame-retardant protective layer 55, arranged sequentially. The chest is a critical part of the human body, and the layered protection structure 5 works synergistically based on the properties of different materials. The sealing layer 51 attenuates shock wave energy through a sealed space; the soft protective layer 52 absorbs the impact kinetic energy of fragments; the hard protective layer 54 resists penetration by high-speed fragments; and the flame-retardant protective layer prevents burning by flames. This multi-layered combination provides comprehensive protection for the chest.

[0045] In this embodiment, the donning and doffing structure 3 includes a quick-release zipper 311 on the bomb disposal jacket 1 and a quick-release zipper 312 on the bomb disposal pants 2. The quick-release zipper 311 is located above the arms of the bomb disposal jacket 1 and is a No. 10 double-opening resin quick-release zipper. The quick-release zipper 311 is used to connect / separate the front and back panels of the bomb disposal jacket 1. The quick-release zipper 312 is located on the outside of the pant legs of the bomb disposal pants 2 and is a No. 10 double-opening resin quick-release zipper. The quick-release zipper 312 is used to pull off and release the connection of the pants.

[0046] Specifically, the No. 10 double-opening resin quick-release zipper is strong and slides smoothly. The quick-release zipper 311 on the upper body is located above the arms, which conforms to the human body's movement habits. The operator can quickly pull the zipper with both hands to separate the front and back pieces of the upper body. The quick-release zipper 312 on the outside of the trousers can quickly open the trousers when pulled. Compared with the traditional bomb disposal suit, the time for putting on and taking off can be shortened to 2-3 minutes, which meets the needs of emergency mission response.

[0047] In this embodiment, the sealing structure 4 includes: a first quick-release hook-and-loop fastener 40 on both sides of the collar of the bomb disposal jacket 1; a second quick-release hook-and-loop fastener 41 5cm from the bottom of the bomb disposal jacket 1; and a trousers hook-and-loop fastener 42 5cm from the waist of the bomb disposal pants 2. The first quick-release hook-and-loop fastener 40 is used to fit and seal with the helmet. After the second quick-release hook-and-loop fastener 41 and the trousers hook-and-loop fastener 42 are connected, an overall seal is formed between the bomb disposal jacket 1 and the bomb disposal pants 2.

[0048] Specifically, the hook and loop fasteners achieve fastening through the interlocking of the hook and loop sides of the nylon hook and loop fasteners. The first upper garment sealing quick-release hook and loop fastener 40 can fit tightly against the edge of the helmet (using the existing bomb disposal helmet) to prevent shock waves from entering from the neck. The second upper garment sealing quick-release hook and loop fastener 41 works in conjunction with the trouser sealing hook and loop fastener 42 to form a sealing ring at the waist through a large area of ​​tight fit, preventing shock waves, debris and gas from entering from the connection between the upper and lower garments, ensuring the overall airtightness of the bomb disposal suit.

[0049] See Figure 6 In this embodiment, the sealing layer 51 forms a sealed space by thermally sealing the double-sided sealing rubber layer and the honeycomb structure layer, which is used to attenuate the energy of the shock wave.

[0050] Specifically, the double-sided sealing rubber layer possesses excellent flexibility and sealing performance. The middle honeycomb structure layer, utilizing its unique porous structure, deforms and collapses under the action of a shock wave, converting the kinetic energy of the shock wave into the internal energy of material deformation. Simultaneously, the air within the sealed space also acts as a buffer. Experimental verification has shown that this structure can reduce the peak overpressure of the shock wave at the chest position from 0.15 MPa to below 0.06 MPa, effectively attenuating the intensity of the shock wave and reducing harm to bomb disposal personnel.

[0051] Among them, the double-sided sealing rubber layer (such as chemical protective clothing fabric) uses an intermediate aramid fabric (such as Teplon). Aramid woven fabric, double-sided polyurethane-bonded mesh fabric, with honeycomb-shaped holes distributed on the surface of the honeycomb structure layer.

[0052] In this embodiment, the soft protective layer 52 and the hard protective layer 54 work together to protect against high-speed fragments. The soft protective layer 52 is made of a flexible material, which absorbs part of the kinetic energy of the fragments through its own deformation when impacted by high-speed fragments, thus slowing down the impact velocity. The hard protective layer 54 has high hardness and strength, which can further block the penetration of fragments. The combination of the two forms a "buffering first, then blocking" protection mechanism, effectively resisting the injury of high-speed fragments to the human body. Among them, the soft protective layer 52 is made of single-layer PI material (such as long fiber series product S35) with angles of 0°, 30°, and 60°, which is sewn together. The hard protective layer 54 is made of single-layer 4UDPE non-woven fabric with a surface density of 200g / m2 (such as... (Preparation of SK fibers) Lamination and pressing.

[0053] In this embodiment, the double-sided sealing rubber layer of the sealing layer 51 is a mesh fabric with an aramid cloth in the middle and polyurethane adhesive on both sides, with a thickness of 0.5 mm. The surface of the honeycomb structure layer in the middle of the sealing layer 51 is distributed with honeycomb-shaped holes, with a hole height of 1 cm and a side length of 0.5 cm. The aramid cloth has high strength and high temperature resistance, and as an intermediate layer, it can enhance the overall strength of the sealing rubber layer. The polyurethane adhesive provides good sealing and waterproof properties. The honeycomb-shaped hole structure is optimized in design, and its size and shape can maximize the shock wave attenuation effect while ensuring the strength of the material.

[0054] In this embodiment, the soft protective layer 52 is made of single-layer PI material with corners of 0°, 30°, and 60°, stitched together, with a surface density of 5 kg / m³. 2 PI material (polyimide) has excellent mechanical properties and impact resistance. By layering at different angles of 0°, 30°, and 60°, the material can evenly distribute the impact force of fragments in all directions, avoiding protection failure due to force in one direction. The sewing process tightly binds the layers together, ensuring that the whole structure works together in the event of an impact.

[0055] In this embodiment, the rigid protective layer 54 is composed of a single layer with a density of 200 g / m². 2 It is formed by laminating and pressing 4UDPE nonwoven fabric. 4UDPE nonwoven fabric (ultra-high molecular weight polyethylene nonwoven fabric) has extremely high specific strength. During the lamination and pressing process, the nonwoven fabric layers are tightly bonded together through resin curing to form a high-strength protective plate, which can effectively resist the penetration of high-speed fragments and provide a solid protective barrier for bomb disposal personnel.

[0056] In this embodiment, both the first flame-retardant protective layer 53 and the second flame-retardant protective layer 55 are made of aramid flame-retardant and antistatic fabric with a surface density of 250 g / m2 (such as DuPont). Aramid flame-retardant and antistatic fabric has excellent flame-retardant properties, is not easily ignited when exposed to fire, and has a limiting oxygen index of over 28%, which can effectively prevent the spread of flames and protect bomb disposal personnel from flame injuries; at the same time, its surface resistivity is less than 1×10⁻⁶. 9 Ω, its antistatic properties prevent static electricity buildup from generating electric sparks, thus avoiding accidental explosions of explosives and ensuring the safety of bomb disposal operations.

[0057] According to the explosion test method in NIJ 0117, with an explosion source of 1 kg TNT, the bomb disposal suit was subjected to an impact resistance test at a distance of 3 m from the explosion source. After the explosion test, the eye overpressure was ≤0.03 MPa and the chest overpressure was ≤0.06 MPa. The specific test results are as follows:

[0058] Table 1. Test results of shock wave resistance performance

[0059]

[0060] The method of using this utility model is as follows:

[0061] Confirm that there is no damage to any part of the bomb disposal jacket 1 and bomb disposal pants 2, that the dressing and undressing structure 3 (quick-release zipper 311 for jacket and quick-release zipper 312 for pants) slides smoothly, and that the sealing structure 4 (first jacket sealing quick-release hook and loop fastener 40, second jacket sealing quick-release hook and loop fastener 41, and pants sealing hook and loop fastener 42) has no loose threads or failure.

[0062] The materials of each layer of the chest protection structure (sealing layer 51, soft protective layer 52, flame-retardant protective layer, and hard protective layer 54) were inspected and found to be free from deformation or breakage.

[0063] Unzip the quick-release zipper 312 on the outside of the pant legs of bomb disposal pants 2, put your legs into the pants, and pull them up to your waist. Pull the zipper along the outside of the pant legs to close it from bottom to top, ensuring the pants fit snugly against your legs.

[0064] Open the quick-release zipper 311 above both arms of the bomb disposal jacket 1. Put your arms into the sleeves of the jacket and adjust the position of the jacket so that the collar is aligned with your neck. Pull the zipper along the top of both arms and close the zipper from the outside in, connecting the front and back panels of the jacket, and ensure that the zipper is fully engaged.

[0065] Fit the first upper garment quick-release hook and loop fastener 40 on both sides of the collar to the edge of the helmet, press the hook and loop fastener to make it stick tightly, and block the gap between the neck and the outside world.

[0066] Align the second quick-release hook and loop fastener 41 (5cm from the bottom of the jacket) with the hook and loop fastener 42 (5cm from the waist of the pants), and press the fasteners from the middle to both sides to form a waist sealing ring, ensuring that the bomb disposal jacket 1 and bomb disposal pants 2 are completely sealed together.

[0067] Exhale quickly and observe the surface of the bomb disposal suit for any obvious expansion or air leakage sounds, confirming that the sealing structure 4 has no gaps; focus on checking the fit between the waist hook and loop fasteners, neck hook and loop fasteners and the helmet. Perform bending over and raising your arms to confirm that the quick-release zippers and hook and loop fasteners are not tight or cracked, that the donning and doffing structure 3 does not affect limb movement, and that the protective layer effectively covers the chest.

[0068] In case of emergency disassembly, pull open the second jacket's quick-release hook-and-loop fastener 41 and the pants' quick-release hook-and-loop fastener 42 from both sides to disconnect the bomb disposal jacket 1 from the bomb disposal pants 2. Pull the quick-release zipper on the outside of the pants legs and pull it fully open from top to bottom to remove the bomb disposal pants 2. To remove the bomb disposal jacket 1: Pull open the first jacket's quick-release hook-and-loop fastener 40 at the neck to disconnect it from the helmet. Pull the quick-release zipper 311 above both arms and pull it fully open from the inside to the outside to remove the bomb disposal jacket 1.

[0069] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be understood that, based on the technical concept of the present invention, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present invention, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present invention.

Claims

1. A closeable bomb suit that is easy to put on and take off, characterized in that, Including a bomb disposal top (1) and bomb disposal pants (2); Both the bomb disposal jacket (1) and the bomb disposal pants (2) are equipped with a donning and doffing structure (3) and a sealing structure (4); the bomb disposal jacket (1) and the bomb disposal pants (2) are connected by the sealing structure (4) to form a sealed whole; The chest protection structure (5) of the bomb disposal suit (1) includes a sealing layer (51), a soft protective layer (52), a first flame-retardant protective layer (53), a hard protective layer (54), and a second flame-retardant protective layer (55) arranged in sequence. The sealing layer (51) forms a sealed space by thermally sealing the double-sided sealing rubber layer and the honeycomb structure layer, which is used to attenuate the energy of the shock wave. The soft protective layer (52) and the hard protective layer (54) work together to protect against high-speed fragments; The double-sided sealing rubber layer of the sealing layer (51) is a mesh fabric with aramid cloth in the middle and polyurethane adhesive on both sides; the surface of the honeycomb structure layer in the middle of the sealing layer (51) has honeycomb-shaped holes. The soft protective layer (52) is made of single-layer PI material with corners of 0°, 30° and 60°, stitched together.

2. The don-doff ease, sealed EOD suit of claim 1, wherein, The don-and-take structure (3) includes: The bomb disposal jacket (1) has a quick-release zipper (311). The quick-release zipper (312) of the bomb disposal pants (2) is provided.

3. The easily donned and doffing sealed bomb disposal suit according to claim 2, characterized in that, The quick-release zipper (311) of the jacket is located above the arms of the bomb disposal jacket (1). The quick-release zipper (311) is a No. 10 double-opening resin quick-release zipper. The quick-release zipper (311) is used to connect / separate the front and back pieces of the bomb disposal jacket (1).

4. The easily donned and doffing sealed bomb disposal suit according to claim 2, characterized in that, The quick-release zipper (312) of the pants is located on the outside of the pant leg of the bomb disposal pants (2). The quick-release zipper (312) is a No. 10 double-opening resin quick-release zipper. The quick-release zipper (312) is used to pull off and release the connection of the pants body.

5. The easily donned and doffing sealed bomb disposal suit according to claim 4, characterized in that, The sealing structure (4) includes: The bomb disposal suit (1) has a first quick-release hook and loop fastener (40) on both sides of the collar. The bomb disposal jacket (1) has a second jacket sealing quick-release hook and loop fastener (41) 5cm from the low front. The bomb disposal pants (2) have a 5cm waist-sealing Velcro strap (42); The first upper garment sealing quick-release hook and loop fastener (40) is used to fit and seal with the helmet; After the second upper garment sealing quick-release hook and loop fastener (41) is connected to the pants sealing hook and loop fastener (42), an overall seal is formed between the bomb disposal upper garment (1) and the bomb disposal pants (2).

6. The easily donned and doffing sealed bomb disposal suit according to claim 5, characterized in that, The rigid protective layer (54) is formed by laminating 4UDPE non-woven fabric with a single layer density of 200g / m².

7. The easily donned and doffing sealed bomb disposal suit according to claim 5, characterized in that, Both the first flame-retardant protective layer (53) and the second flame-retardant protective layer (55) are made of aramid flame-retardant and antistatic fabric with a surface density of 250g / m².

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