Low-incidental-damage energy-gathered cutting door breaking device

Abstract

The utility model discloses a low incidental damage shaped charge cutting door breaking device, which comprises a protective main body, shaped charge, a double faced adhesive tape and a detonating network, the protective main body is of a hollow rectangular frame structure and is made of an EVA light material, and the double faced adhesive tape is arranged on the surface of the protective main body and is used for being adhered and fixed with an anti-theft door body; the shaped charge is formed by splicing linear shaped cutting ropes with differentiated charge in a rectangular manner, and long edges and short edges are lapped alternately through 45-degree notches and 90-degree notches to form a closed cutting path; the detonating network comprises an electric detonator, a detonating line and a detonator and is used for detonating the shaped charge. Therefore, the device adopts an EVA (Ethylene Vinyl Acetate) protection main body, absorbs impact, is free of fatal splashes after being broken, is subjected to differential charging (large 58g / m and small 42g / m) to ensure that three sides are fully cut and turned inwards, one side is partially cut and adhered to form a channel, a linear energy-gathered cutting cable is subjected to jet flow precise cutting by an explosive type cover, the explosive quantity is reduced, the efficiency is improved, and the device is adaptive to security doors of grade A and below, is fixed by a double-sided adhesive tape, is remotely detonated, and is convenient and safe.

Description

Technical Field

[0001] This utility model relates to the technical field of door breaching devices, and in particular to a low-collateral-damage energy-concentrated cutting door breaching device. Background Technology

[0002] In counter-terrorism raids and emergency rescue missions, rapidly breaching security doors is a crucial step for assault team members to enter key areas. Traditional breaching devices often use linear detonating cords, utilizing the high velocity of the blast wave to crush the door. However, such devices have significant drawbacks:

[0003] The secondary hazards are significant: the explosion can easily generate a large number of high-speed flying fragments, posing a threat to the safety of the assault team members and hostages.

[0004] Limited cutting effect: Traditional blasting methods can easily lead to the complete destruction of the door structure, making it impossible to form a controllable personnel access passage. In addition, the amount of explosives is large, resulting in a wide range of collateral damage.

[0005] Insufficient operational safety: The method of fixing the detonating cord to the door is simple, and the explosive impact energy is not effectively controlled, increasing the risk of uncontrollability.

[0006] To address these issues, existing technologies attempt to reduce hazard by optimizing the explosive charge structure, but a mature solution that balances cutting efficiency and safety has yet to be developed. Therefore, there is an urgent need for a low-collateral-damage breaching device capable of precisely controlling explosion energy, minimizing debris, and creating an effective passageway. Utility Model Content

[0007] This utility model aims to at least partially solve one of the technical problems in the related art.

[0008] Therefore, the purpose of this utility model is to propose a low-collateral-damage shaped charge cutting and breaching device. This device adopts an EVA protective body, which absorbs impact and breaks apart without fatal spatter. Differentiated charges (large 58g / m, small 42g / m) enable full cutting and inward turning on three sides, and partial cutting and adhesion on one side to form a channel. The linear shaped charge cutting cable uses a shaped charge shroud jet for precise cutting, reducing the amount of charge and improving efficiency. It is suitable for Class A and below security doors, fixed with double-sided tape, and remotely detonated, making it convenient and safe.

[0009] To achieve the above objectives, this utility model proposes a low-collateral-damage shaped charge cutting and breaching device, comprising a protective body, a shaped charge, double-sided adhesive tape, and a detonation network. The protective body is a hollow rectangular frame structure made of lightweight EVA material, which breaks into non-lethal spatter upon explosion. The right end face of the rectangular frame has a detonator mounting hole. The double-sided adhesive tape is applied to the surface of the protective body for bonding and fixing to the security door. The shaped charge is composed of linear shaped charge cutting cables of differentiated charge, joined together in a rectangular fashion. The long and short sides overlap with alternating 45° and 90° cuts to form a closed cutting path. The detonation hole communicates with the end face of the shaped charge. The detonation network includes an electric detonator, a detonating wire, and a detonator for detonating the shaped charge.

[0010] This invention relates to a low-collateral-damage shaped charge cutting and breaching device. The device uses an EVA protective body to absorb impact and break apart without fatal spatter. Differentiated charges (large 58g / m, small 42g / m) allow for full cutting and inward turning on three sides, while partial cutting and adhesion on one side creates a channel. The linear shaped charge cutting cable uses a shaped charge jet for precise cutting, reducing the amount of explosive and increasing efficiency. It is suitable for Class A and lower security doors, and features double-sided adhesive for fixation and remote initiation, making it convenient and safe.

[0011] In addition, the low collateral damage shaped charge cutting and breaching device proposed in the above application may also have the following additional technical features:

[0012] Specifically, the rectangular frame of the protective body is manufactured using an integrated mold.

[0013] Specifically, the linear energy-concentrating cutting cable comes in two specifications: a long side and a short side. One end of the long side has a 45° cut and the other end has a 90° cut, and one end of the short side has a 45° cut and the other end has a 90° cut. The long side and the short side are interlocked by complementary cut angles to form a rectangular frame, which is then installed in the groove of the protective body.

[0014] Specifically, the linear shaped charge cutting cable includes a shaped charge liner and a main charge, wherein the shaped charge liner is a lead tubular structure and the main charge is polymethyl methacrylate explosive, which is filled into the shaped charge liner through multiple compression molding processes.

[0015] Specifically, the electric detonator of the detonation network is inserted into the detonation hole and is interference-fitted with the end face of the linear shaped charge cutting cable; the electric detonator is connected to a handheld remote detonator via a detonation wire.

[0016] Specifically, the shaped charge includes a large-charge shaped charge cutting cable and a small-charge shaped charge cutting cable; the charge per unit length of the large-charge shaped charge cutting cable is 58 g / m, and the charge per unit length of the small-charge shaped charge cutting cable is 42 g / m.

[0017] Specifically, the large-charge shaped charge cutting cable is installed on the upper, lower, and left ends of the protective body, and the small-charge shaped charge cutting cable is installed on the right end; after the explosion, the three sides with the large charge are completely cut and turned inward, while the right end with the small charge is partially cut and adhered to the door, forming a passage for personnel to enter and exit.

[0018] Specifically, the double-sided adhesive is evenly distributed on the surface of the protective body that contacts the anti-theft door, avoiding the door lock and handle positions.

[0019] The density of lightweight EVA material is 0.90~0.95 g / cm³. 3 With a thickness of 5~10mm, it combines lightweight properties with impact resistance and toughness.

[0020] Large charge shaped charge cutting cable: the charge amount can be adjusted from 50 to 60 g / m, and it is suitable for steel plates with a thickness of 1.2 to 2.0 mm;

[0021] Small charge shaped charge cutting cable: The charge amount can be adjusted from 35 to 45 g / m, and it is suitable for steel plates with a thickness of 1.0 to 1.5 mm.

[0022] The advantages of this invention compared to existing technologies are as follows:

[0023] (1) The EVA protective body absorbs the energy of the explosion impact and has no fatal splashes after breaking. The differentiated charge design (large charge energy cutting cable unit length 58g / m, small charge 42g / m) makes the three sides completely cut and turn inward, and one side partially cut and sticks together, avoiding the splashing of fragments and forming a safe passage.

[0024] (2) The linear energy-concentrating cutting cable forms a metal jet through the shaped charge liner to precisely cut the door body. While reducing the charge amount, it improves the cutting efficiency and meets the needs of breaking down Class A and below security doors.

[0025] (3) The rectangular frame formed by the integrated mold is quickly fixed with double-sided tape, avoiding door locks and handles, adapting to complex scenarios, and the remote detonation design ensures personnel safety.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0028] Figure 1 This is a schematic diagram of the overall structure of a low-collateral-damage energy-concentrating cutting and breaching device according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the linear energy-concentrating cutting cable structure of a low-collateral-damage energy-concentrating cutting and breaching device according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the shaped charge initiation network structure of a low collateral damage shaped charge cutting and breaching device according to an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the control connection of a low-collateral-damage energy-concentrating cutting and breaching device according to an embodiment of the present invention.

[0032] As shown in the figure: 1. Protective body; 2. Shaped charge; 3. Double-sided tape; 4. Detonation network; 10. Rectangular frame; 11. Detonation hole; 20. Linear shaped charge cutting cord; 21. Shaped charge liner; 22. Main charge; 30. Electric detonator; 31. Detonation wire; 32. Detonator. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0034] The following description, in conjunction with the accompanying drawings, describes a low-collateral-damage, high-energy cutting and breaching device for doors according to an embodiment of the present invention.

[0035] like Figures 1-4 As shown, a low collateral damage shaped charge cutting and breaching device according to an embodiment of the present invention includes a protective body 1, a shaped charge 2, double-sided tape 3, and a detonation network 4.

[0036] It is understood that the protective body 1 is a hollow rectangular frame 10 structure made of lightweight EVA material. This material is not only easy to process, but also ensures that the flying debris generated after an explosion will not cause fatal injuries to the human body. Using double-sided adhesive 3 on the surface of the protective body 1, it is firmly bonded to the security door, ensuring that the entire device fits tightly to the door.

[0037] Next, the shaped charge 2 is installed. The shaped charge 2 consists of linear shaped charge cutting cables 20 of different specifications. These cables have long and short sides, with one end of the long side having a 45° cut and the other end having a 90° cut. By overlapping them alternately, utilizing the complementary properties of the 45° and 90° cuts, they are spliced ​​into a rectangular frame 10, thus forming a closed cutting path. The assembled shaped charge 2 is then installed in the corresponding position on the protective body 1, preparing for subsequent cutting operations.

[0038] Finally, the detonation network 4 is connected. The detonation network 4 includes an electric detonator 30, a detonating wire 31, and a detonator 32. The electric detonator 30 is accurately placed in the appropriate position to successfully detonate the shaped charge 2. The electric detonator 30 is connected to the detonator 32 via the detonating wire 31. When a breaching operation is required, the operator operates the detonator 32 from a safe distance. The detonator 32 sends a signal, which is transmitted to the electric detonator 30 via the detonating wire 31. The electric detonator 30 detonates, igniting the explosive charge, causing the linear shaped charge cutting cable 20 to explode and generate a metal jet that cuts the security door along a closed cutting path, achieving the purpose of breaching the door.

[0039] In one embodiment of this utility model, such as Figures 1-4 As shown, the rectangular frame 10 of the protective body 1 is manufactured by an integrated mold. Its right end face is provided with a φ5 detonator installation detonation hole 11, which is connected to the end face of the shaped charge 2. The EVA material breaks into non-lethal splashes after the explosion.

[0040] It is understood that the rectangular frame 10 of the protective body 1 is manufactured using an integrated mold. This manufacturing method ensures the overall structural strength and stability of the rectangular frame 10, while also improving production efficiency and product consistency. The right end face of the rectangular frame 10 is provided with a φ5 detonator mounting hole 11, providing precise positioning and suitable space for detonator installation.

[0041] The detonation hole 11 is connected to the end face of the shaped charge 2. In actual operation, when a breaching operation is required, the electric detonator 30 is inserted through the detonation hole 11. Since the detonation hole 11 is connected to the end face of the shaped charge 2, the electric detonator 30 can accurately contact the shaped charge 2, thereby ensuring that the explosive energy can be effectively transferred to the shaped charge 2 during detonation.

[0042] The lightweight EVA material used in the protective body 1 has unique advantages. When the device explodes, the EVA material will shatter, but the resulting fragments will not cause fatal injuries to surrounding personnel. This is because the physical properties of EVA material itself determine that it will not produce high-speed, sharp, and highly lethal fragments under the impact of an explosion. This characteristic greatly reduces the risk of collateral damage to the surrounding environment and personnel during the use of this breaching device, thus improving its safety.

[0043] In one embodiment of this utility model, such as Figures 1-4 As shown, the linear energy-concentrating cutting cable 20 is available in two specifications: long side and short side. One end of the long side has a 45° cut and the other end has a 90° cut. One end of the short side has a 45° cut and the other end has a 90° cut. The long side and the short side are interlocked by complementary cut angles to form a rectangular frame 10, which is then installed in the groove of the protective body 1.

[0044] Understandably, the first step involves preparing linear energy-concentrating cutting cables 20 of different specifications, divided into long-side and short-side types. One end of the long side is machined into a 45° cut, and the other end into a 90° cut; similarly, one end of the short side has a 45° cut, and the other end has a 90° cut. These specific angled cut designs lay the foundation for subsequent splicing and assembly.

[0045] During assembly, the principle of complementary cut angles is followed. First, take one long-side linear energy-conducting cutting cable 20 and tightly align one end of its 90° cut with one end of the short-side linear energy-conducting cutting cable 20's 45° cut, ensuring a perfect fit. Then, take another long-side linear energy-conducting cutting cable 20 and align one end of its 45° cut with another 45° cut on the already spliced ​​short side, followed by aligning it with one end of the 90° cut on another short side, and so on, alternating between the two. In this way, the long and short sides are overlapped alternately, ultimately forming a complete rectangular frame 10 structure. The dimensions of this rectangular frame 10 precisely match the grooves of the protective body 1.

[0046] After assembling the rectangular frame 10, carefully install it into the groove of the protective body 1. During installation, ensure that the linear shaped charge cutting cable 20 fits tightly against all parts of the groove in the protective body 1, without any gaps or looseness. This not only ensures the stability of the linear shaped charge cutting cable 20 within the device but also allows the explosive energy of the shaped charge 2 to be evenly distributed across the security door upon detonation, improving the cutting effect and efficiency and providing strong support for achieving door breaching operations with low collateral damage.

[0047] In one embodiment of this utility model, such as Figures 1-4As shown, the linear shaped charge cutting cable 20 includes a shaped charge 21 and a main charge 22. The shaped charge 21 is a lead tubular structure, and the main charge 22 is polymethyl methacrylate explosive, which is filled into the shaped charge 21 by multiple compression molding.

[0048] Understandably, the first step is to prepare the materials needed to make the linear shaped charge cutting cable 20, namely a lead shaped charge liner 21 and polymethyl methacrylate (PMMA) as the main charge 22. The shaped charge liner 21 is a tubular structure made of lead, which plays a crucial role in the subsequent detonation of the explosive. The PMMA has high brisification, providing sufficient energy to cut through the security door.

[0049] Next, the main charge 22 is filled into the shaped charge liner 21. This filling is accomplished through multiple compression molding processes. Specifically, an appropriate amount of polymethyl methacrylate (PMMA) explosive is first placed into the shaped charge liner 21, and then compressed using a compression device. The purpose of this step is to make the explosive more compact, increasing its density and thus enhancing the energy and effect of the explosion. After each compression, the filling and compaction of the explosive within the shaped charge liner 21 are checked.

[0050] The process of adding and pressing the explosive is repeated multiple times until the shaped charge liner 21 is completely filled with the main charge 22. This repeated pressing ensures that the main charge 22 is evenly and tightly distributed within the shaped charge liner 21, preventing any loose or gapped explosive material. This ensures that the energy generated by the explosion of the main charge 22 is stably and efficiently transferred to the shaped charge liner 21 during subsequent detonation.

[0051] After the main charge 22 is completely filled into the shaped charge liner 21 through multiple compression molding processes, the linear shaped charge cutting cable 20 is completed. It is then applied to a low collateral damage shaped charge cutting and breaching device. When the detonation network 4 detonates the explosive, the shaped charge liner 21 forms a metal jet under the action of the explosive energy of the main charge 22, thereby precisely cutting the security door.

[0052] In one embodiment of this utility model, such as Figures 1-4 As shown, the electric detonator 30 of the detonation network 4 is inserted into the detonation hole 11 and is interference-fitted with the end face of the linear shaped charge cutting cable 20. The electric detonator 30 is connected to the handheld remote detonator 32 through the detonation wire 31.

[0053] It is understood that before installing the detonation network 4, it must be ensured that the protective body 1 is firmly attached to the security door using double-sided tape 3, and that the shaped charge 2 is assembled from linear shaped charge cutting cables 20 with alternating 45° and 90° cuts to form a rectangular frame 10 and installed within the groove of the protective body 1. Simultaneously, it must be ensured that the φ5 detonator installation detonation hole 11 on the right end face of the protective body 1 is unobstructed and free of debris.

[0054] Remove the electric detonator 30 and carefully insert it into the detonation hole 11 on the right end face of the rectangular frame 10 of the protective body 1. Since the electric detonator 30 and the linear shaped charge cutting cable 20 have an interference fit, appropriate pressure needs to be applied during insertion to ensure tight contact between the two ends. This interference fit ensures that the energy generated by the electric detonator 30 can be efficiently and stably transferred to the linear shaped charge cutting cable 20 during detonation, thereby detonating the explosive. After the electric detonator 30 is installed, connect one end of the detonating wire 31 to the electric detonator 30.

[0055] Connect the other end of the detonation wire 31 to the handheld remote detonator 32. During connection, carefully check that the connection is secure and that the signal can be transmitted normally. The handheld remote detonator 32 is a key device for operators to control detonation, providing them with the ability to trigger detonation from a safe distance.

[0056] After completing all the above steps, the operator, carrying the handheld remote detonator 32, evacuates to a safe area. Once the site is confirmed to be safe and detonation conditions are met, the operator activates the handheld remote detonator 32 to send a detonation signal. This signal is transmitted to the electric detonator 30 via the detonation wire 31. The electric detonator 30 is triggered and generates explosive energy, which in turn detonates the explosive, causing the linear shaped charge cutting cable 20 to cut the security door along a closed cutting path, thus achieving the purpose of breaching the door.

[0057] In one embodiment of this utility model, such as Figures 1-4 As shown, the shaped charge 2 includes a large-charge shaped charge cutting cable and a small-charge shaped charge cutting cable. The charge per unit length of the large-charge shaped charge cutting cable is 58 g / m, and the charge per unit length of the small-charge shaped charge cutting cable is 42 g / m.

[0058] Understandably, when a door breaching operation is required, the operator operates a handheld remote detonator 32 from a safe distance to send a detonation signal. The signal is transmitted to the electric detonator 30 via the detonation wire 31, which detonates and ignites the explosive. Because the large-charge shaped charge cutting cable has a larger charge per unit length (58g / m), it generates sufficient energy during detonation to completely cut and inwardly flip the corresponding door sections at the upper, lower, and left ends of the protective body 1. In contrast, the small-charge shaped charge cutting cable has a relatively smaller charge per unit length (42g / m), and its explosion only cuts the right end of the door section, but not completely severs it. This allows the right end section to remain somewhat attached to the door, ultimately forming a passage for personnel to enter and exit. This achieves the purpose of breaching the door while effectively reducing collateral damage.

[0059] In one embodiment of this utility model, such as Figures 1-4As shown, large-charge shaped charge cutting cables are installed on the upper, lower, and left ends of the protective body 1, and small-charge shaped charge cutting cables are installed on the right end. After the explosion, the three sides with large charge are completely cut and turned inward, while the right end with small charge is partially cut and adhered to the door, forming a passage for personnel to enter and exit.

[0060] In one embodiment of this utility model, such as Figures 1-4 As shown, the double-sided adhesive 3 is evenly distributed on the surface of the protective body 1 that contacts the anti-theft door, avoiding the door lock and handle positions.

[0061] It should be noted that the control method of this application can be automatically controlled by a controller. The control method of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, this application is mainly used to protect mechanical structures, so the control method and circuit connection will not be explained in detail here.

[0062] Specifically, the actual usage process during implementation is as follows:

[0063] 1. Preparation

[0064] Inspect the protective body 1: Ensure that the protective body 1 is a hollow rectangular frame structure 10 made of lightweight EVA material, and that the φ5 detonator mounting hole 11 on its right end face is unobstructed and free of debris. Also, check that the surface of the protective body 1 is clean to facilitate the subsequent application of double-sided tape 3.

[0065] Prepare shaped charge 2: Prepare large-charge shaped charge cutting cord (58g / m charge per unit length) and small-charge shaped charge cutting cord (42g / m charge per unit length). Both are linear shaped charge cutting cords 20, with 45° and 90° cuts at the ends of the long and short sides, respectively. Furthermore, confirm that the shaped charge liner 21 is a lead tubular structure, the main charge 22 is polymethyl methacrylate (PMMA), and that the main charge 22 has been repeatedly compressed and filled into the shaped charge liner 21.

[0066] Preparation of the detonation network 4: Check whether the electric detonator 30, detonation wire 31 and handheld remote detonator 32 are intact and functioning properly.

[0067] Inspect the security door: Determine the location of the door lock and handle, measure the door dimensions, and ensure that the main protective body 1 is compatible with it.

[0068] 2. Install the protective main body 1

[0069] Apply double-sided tape 3: Distribute double-sided tape 3 evenly on the surface of the protective body 1 that contacts the anti-theft door, while avoiding the door lock and handle.

[0070] Secure the protective body 1: Firmly attach the protective body 1, which has been coated with double-sided adhesive 3, to the security door, ensuring that the entire device fits tightly against the door.

[0071] 3. Install shaped charge 2

[0072] Splicing linear energy-concentrating cutting cables 20: Based on the principle of complementary cut angles, the long and short linear energy-concentrating cutting cables 20 are overlapped alternately to form a rectangular frame 10. Specifically, one long linear energy-concentrating cutting cable 20 is taken and its 90° cut end is tightly connected to the 45° cut end of the short linear energy-concentrating cutting cable 20. Then, another long linear energy-concentrating cutting cable 20 is taken and its 45° cut end is connected to the other 45° cut end of the already spliced ​​short side. Then, it is connected to the 90° cut end of the other short side. This process is repeated alternately until a complete rectangular frame 10 is formed.

[0073] Install the shaped charge cutting cable: Install the assembled shaped charge 2 into the groove of the protective body 1. The large charge shaped charge cutting cable is installed at the upper, lower, and left ends of the protective body 1, and the small charge shaped charge cutting cable is installed at the right end. During installation, ensure that the linear shaped charge cutting cable 20 fits tightly with all parts of the groove of the protective body 1, without any gaps or looseness.

[0074] 4. Connect to the detonation network 4

[0075] Inserting the electric detonator 30: Carefully insert the electric detonator 30 into the detonation hole 11 on the right end face of the rectangular frame 10 of the protective body 1. Due to the use of interference fit, appropriate pressure needs to be applied during insertion to ensure that the electric detonator 30 is in close contact with the end face of the linear shaped charge cutting cable 20.

[0076] Connect the detonating wire 31: Reliably connect one end of the detonating wire 31 to the electric detonator 30, and connect the other end to the handheld remote detonator 32. When connecting, carefully check whether the connection is secure and ensure that the signal can be transmitted normally.

[0077] 5. Detonation and Door Breaching

[0078] Evacuation of personnel: Operators carrying handheld remote detonators 32 evacuate to a safe area.

[0079] Confirming detonation conditions: After confirming that the site is safe and the detonation conditions are met, the operator sends a detonation signal by operating the handheld remote detonator 32.

[0080] Explosive Detonation: The signal is transmitted to the electric detonator 30 via the detonating wire 31. The electric detonator 30 is triggered and generates explosive energy, which in turn detonates the explosive. The explosion of the large-charge shaped charge cutting cable generates enough energy to completely cut and inwardly flip the corresponding door sections at the upper, lower, and left ends of the protective body 1. The energy generated by the explosion of the small-charge shaped charge cutting cable cuts the right-end door section, but does not completely sever it. The right-end section remains adhered to the door to a certain extent, ultimately forming a passage for personnel to enter and exit, achieving the purpose of breaching the door with low collateral damage.

[0081] In summary, this utility model provides a low-collateral-damage shaped charge cutting and breaching device. The device uses an EVA protective body to absorb impact and break apart without fatal spatter. Differentiated charges (large 58g / m, small 42g / m) allow for full cutting and inward turning on three sides, while partial cutting and bonding on one side creates a channel. The linear shaped charge cutting cable uses a shaped charge jet for precise cutting, reducing the amount of explosive and improving efficiency. It is suitable for Class A and lower security doors, and features double-sided adhesive for fixation and remote detonation, making it convenient and safe.

[0082] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A low-collateral-damage shaped-energy cutting and breaching device, characterized in that, It includes a protective body (1), a shaped charge (2), double-sided tape (3), and an initiation network (4), among which, The protective body (1) is a hollow rectangular frame (10) structure, made of EVA lightweight material. The EVA material breaks into non-lethal splatter after explosion. The right end face of the rectangular frame (10) is provided with a detonator installation detonation hole (11). The surface of the protective body (1) is provided with double-sided adhesive (3) for bonding and fixing to the anti-theft door. The shaped charge (2) is formed by rectangular splicing of linear shaped charge cutting cables (20) of differentiated charges. The long and short sides are overlapped by alternating 45° and 90° cuts to form a closed cutting path. The detonation hole (11) is connected to the end face of the shaped charge (2). The detonation network (4) includes an electric detonator (30), a detonation wire (31), and a detonator (32) for detonating the shaped charge (2).

2. The low-collateral-damage shaped-energy cutting and breaching device according to claim 1, characterized in that, The rectangular frame (10) of the protective body (1) is manufactured by an integrated mold.

3. The low-collateral-damage shaped-energy cutting and breaching device according to claim 1, characterized in that, The linear energy-concentrating cutting cable (20) is divided into two specifications: long side and short side. One end of the long side has a 45° cut and the other end has a 90° cut. One end of the short side has a 45° cut and the other end has a 90° cut. The long side and the short side are overlapped alternately by complementary cut angles to form a rectangular frame, which is then installed in the groove of the protective body (1).

4. The low-collateral-damage shaped-energy cutting and breaching device according to claim 3, characterized in that, The linear shaped charge cutting cable (20) includes a shaped charge liner (21) and a main charge (22), wherein, The shaped charge shroud (21) is a lead tubular structure, and the main charge (22) is polymethyl methacrylate explosive, which is filled into the shaped charge shroud (21) by multiple compression molding.

5. A low-collateral-damage shaped-energy cutting and breaching device according to claim 1 or 2, characterized in that, The electric detonator (30) of the detonation network (4) is inserted into the detonation hole (11) and is interference-fitted with the end face of the linear shaped charge cutting cable (20); The electric detonator (30) is connected to the handheld remote detonator (32) via a detonation wire (31).

6. The low-collateral-damage shaped-energy cutting and breaching device according to claim 1, characterized in that, The shaped charge (2) includes a large-charge shaped charge cutting cable and a small-charge shaped charge cutting cable; The charge per unit length of the large-charge shaped charge cutting cable is 58 g / m, and the charge per unit length of the small-charge shaped charge cutting cable is 42 g / m.

7. A low-collateral-damage shaped-energy cutting and breaching device according to claim 6, characterized in that, The large charge shaped charge cutting cable is installed at the upper, lower and left ends of the protective body (1), and the small charge shaped charge cutting cable is installed at the right end; After the explosion, the three sides with a large explosive charge were completely cut off and turned inside out, while the right side with a small explosive charge was cut off and stuck to the door, forming a passage for personnel to enter and exit.

8. The low-collateral-damage shaped-energy cutting and breaching device according to claim 1, characterized in that, The double-sided adhesive (3) is evenly distributed on the surface of the protective body (1) that contacts the anti-theft door, avoiding the door lock and handle positions.

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