Quick discriminator for reverse trimming line of explosive device

Abstract

The utility model belongs to the field of explosive ordnance disposal training equipment, and particularly relates to a quick discriminator for an anti-shear line of an explosive device, which comprises a current detector and a simulated detonating device provided with an anti-shear line. The anti-trimming rapid discriminator for the explosive device further comprises an electromagnetic shielding box, a positive terminal and a negative terminal. A detection hole is formed in the electromagnetic shielding box, so that the current detector can extend into or be removed from the detection hole; one end of the detonating device is electrically connected to the power supply, and the other end is electrically connected to the binding post; the two binding posts are arranged in the electromagnetic shielding box, the positive binding post is arranged at an interval relative to the negative binding post, the two ends of the reverse trimming line are detachably connected to the positive binding post and the negative binding post respectively, and the reverse trimming line directly faces the detection hole; and flexible electromagnetic shielding cloth is arranged at the detection hole, and the electromagnetic shielding cloth completely covers the detection hole. Therefore, non-contact circuit detection can be carried out on the anti-trimming line of the explosive device, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of explosive disposal training equipment, and in particular relates to a quick identifier for reverse shear lines of explosive devices. Background Art

[0002] At present, there is a surge in explosive cases, and the explosive devices are complex and diverse. Criminals use integrated circuits and electronic components to set up high and low voltage circuits and disguise multiple reverse shear wires, which greatly increases the difficulty of detection. The circuit detection in the explosive device does not allow contact detection with an ohmmeter. These situations bring severe challenges to the bomb disposal work. If the reverse shear wire in the explosive device cannot be accurately identified, it may even put the lives of the bomb disposal personnel in danger. Therefore, it is necessary to strengthen the identification and detection of reverse shear wires in daily training.

[0003] However, currently, senior professionals usually teach newcomers how to detect reverse shear wires directly. However, due to the high electromagnetic interference, the detection results of reverse shear wires are greatly affected. In the prior art, there is no special training for reverse shear wire detection.

[0004] Therefore, a more reasonable technical solution needs to be provided to perform non-contact circuit detection on the reverse shear wire of the explosive device and ensure the accuracy of the detection result. Utility Model Content

[0005] The utility model aims to provide a quick identifier for reverse shearing wires of explosive devices, so as to perform non-contact circuit detection on reverse shearing wires of explosive devices and ensure the accuracy of detection results.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an explosive device reverse shear wire quick identifier, comprising a current detector and a simulated detonating device, wherein the detonating device has a reverse shear wire; the explosive device reverse shear wire quick identifier also includes an electromagnetic shielding box, a positive electrode terminal and a negative electrode terminal; the electromagnetic shielding box is provided with a detection hole so that the current detector can be inserted into or removed from the detection hole; one end of the detonating device is electrically connected to a power supply, and the other end is electrically connected to the positive electrode terminal and the negative electrode terminal respectively;

[0007] The positive terminal and the negative terminal are arranged in the electromagnetic shielding box, and the positive terminal is spaced apart from the negative terminal. The two ends of the reverse cutting wire are detachably connected to the positive terminal and the negative terminal, respectively, wherein the reverse cutting wire is opposite to the detection hole. A flexible electromagnetic shielding cloth is provided at the detection hole, and the electromagnetic shielding cloth completely covers the detection hole, so that the entire detection structure forms a relatively closed structure, which can prevent electromagnetic leakage and external electromagnetic interference to the reverse cutting wire.

[0008] Optionally, the explosive device reverse shear wire rapid identifier further comprises a shielding partition, wherein the shielding partition separates the inner space of the electromagnetic shielding box into a detection area and a storage area, wherein the power supply and the detonating device are arranged in the storage area.

[0009] Optionally, the electromagnetic shielding box includes a box body and a box cover, and the box cover is rotatably connected to the box body so that a simulated detonating device can be placed in or removed from the box body.

[0010] Optionally, a boss is provided on the box cover.

[0011] Optionally, the electromagnetic shielding box includes a substrate and an electromagnetic radiation protection film attached to a surface of the substrate.

[0012] Optionally, the substrate is configured as a transparent substrate.

[0013] Optionally, the current detector is configured as a Hall current detector or a magnetoresistive current detector.

[0014] Optionally, the electromagnetic shielding cloth is configured as an extended cylindrical structure, which makes it more convenient to hold the current detector from the outside.

[0015] The working process of the explosive device reverse shear wire fast identifier is summarized as follows: connect the simulated detonating device (equivalent to a resistor) to the power supply and the terminal (positive terminal and negative terminal), and then connect the simulated reverse shear wire of the detonating device to the positive terminal and the negative terminal. In this case, the current detector can hold the electromagnetic shielding cloth from the detection hole. Since the current detector is set on the electromagnetic shielding cloth, the current detector can be pinched from the outside by hand for detection, thereby further reducing the influence of electromagnetic radiation on the detection result.

[0016] When the line is powered on, a path is formed. Therefore, the current detector can detect the current state of the reverse shear wire, that is, whether there is current passing through, the magnitude of the current, and the direction of the current. By monitoring the change in current, it can be determined whether the reverse shear wire is cut or short-circuited, and then the state of the simulated explosive device can be determined. Based on this detection training, it is helpful to help bomb disposal personnel accurately determine the reverse shear wire in the explosive device.

[0017] In the explosive device reverse shear wire fast identifier, based on the setting of the electromagnetic shielding box, the influence of external electromagnetic interference on the detection result can be prevented. By setting the positive and negative terminals in the shielding box, the accuracy of current detection can be ensured. At the same time, the shielding box also provides a certain degree of safety protection to prevent accidental touch or other unexpected situations.

[0018] Through the above technical solution, the reverse shear wire of the simulated explosive device can be accurately detected by non-contact current measurement, thereby quickly and accurately judging whether there is current in the wire and the magnitude and direction of the current without directly contacting the wire and destroying the circuit of the explosive device, and then accurately judging the reverse shear wire in the explosive device, providing scientific guarantee for the safe disposal of explosives. In this way, it can replace the traditional detection method, without adding an external power supply, and without using an ohmmeter to contact the wire for detection, and has good practicality and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a perspective structural diagram of an explosive device reverse shear wire rapid identifier provided by the utility model in one embodiment, wherein the electromagnetic shielding cloth is removed in order to show the internal structure;

[0021] Figure 2 It is a perspective structural diagram of another embodiment of the explosive device reverse shear line rapid identifier provided by the utility model;

[0022] Figure 3 It is a schematic diagram of the reverse thread shearing detection circuit adopted in the present invention.

[0023] In the above drawings: 1-current detector, 2-detonating device, 3-electromagnetic shielding box, 301-detection hole, 31-box body, 32-box cover, 41-positive terminal, 42-negative terminal, 5-shielding partition, 6-power supply part, 7-reverse cut wire, 8-electromagnetic shielding cloth. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to help understand the present invention, but does not constitute a limitation on the present invention. The specific structural and functional details disclosed herein are only used to describe the embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments described herein.

[0025] According to a specific embodiment of the utility model, a quick identifier for reverse shearing of explosive devices is provided, wherein: Figures 1 to 3 One specific embodiment is shown.

[0026] See also Figures 1 to 3 As shown, the explosive device reverse shear wire quick identifier includes a current detector 1 and a simulated detonating device 2, and the detonating device 2 has a reverse shear wire. The explosive device reverse shear wire quick identifier also includes an electromagnetic shielding box 3, a positive terminal 41 and a negative terminal 42; the electromagnetic shielding box 3 is provided with a detection hole 301, so that the current detector 1 can be inserted into or removed from the detection hole 301; one end of the detonating device 2 is electrically connected to the power supply 6, and the other end is electrically connected to the positive terminal 41 and the negative terminal 42; the positive terminal 41 and the negative terminal 42 are arranged in the electromagnetic shielding box 3, and the positive terminal 41 is arranged at an interval relative to the negative terminal 42, and the two ends of the reverse shear wire 7 are detachably connected to the positive terminal 41 and the negative terminal 42, respectively, wherein the reverse shear wire is opposite to the detection hole 301. This arrangement allows the current detector 1 to be inserted into the box from the outside for detection. This design allows the detection process to be carried out without opening the shielding box, thereby improving the safety and convenience of the detection; a flexible electromagnetic shielding cloth is provided at the detection hole, and the electromagnetic shielding cloth completely covers the detection hole, so that the entire detection structure forms a relatively closed structure, which can prevent electromagnetic leakage and prevent external electromagnetic interference with the reverse shearing line.

[0027] The working process of the explosive device reverse shear wire fast identifier is summarized as follows: Figure 3 As shown in the detection principle diagram, the simulated detonator 2 (equivalent to a resistor) is connected to the power supply and the terminals (positive terminal 41 and negative terminal 42), and then the reverse shear wires of the simulated detonator 2 are connected to the positive terminal 41 and the negative terminal 42 respectively. In this case, refer to Figure 1 and Figure 2 As shown, the current detector 1 can be extended into the detection hole 301 and continuously approached to the reverse shear wire. At this time, a path will be formed after the power is turned on, so the current detector 1 can detect the current state of the reverse shear wire, that is, whether there is current passing, the magnitude of the current, and the direction of the current. By monitoring the change and direction of the current through the digital size and "+" and "-" signs displayed on the LCD screen of the current detector, it can be determined whether the reverse shear wire 7 is cut or short-circuited, and then the state of the simulated explosive device can be determined. Based on this detection training, it is helpful to help bomb disposal personnel accurately determine the reverse shear wire in the explosive device.

[0028] In the explosive device reverse shear wire fast identifier, based on the setting of the electromagnetic shielding box 3, the influence of external electromagnetic interference on the detection result can be prevented. By setting the positive terminal 41 and the negative terminal 42 in the shielding box, the accuracy of current detection can be ensured. At the same time, the shielding box also provides a certain degree of safety protection to prevent accidental touch or other unexpected situations.

[0029] Through the above technical solution, the reverse shear wire of the simulated explosive device can be accurately detected by non-contact current measurement, thereby quickly and accurately judging whether there is current in the wire and the magnitude and direction of the current without directly contacting the wire and destroying the circuit of the explosive device, and then accurately judging the reverse shear wire in the explosive device, providing scientific guarantee for the safe disposal of explosives. In this way, it can replace the traditional detection method, without the need for an external power supply, and without the need to use an ohmmeter to contact the wire for detection, and has good practicality and safety.

[0030] In addition, the explosive device reverse shear wire rapid identifier provided by the present disclosure has the following beneficial effects: 1. It can be used for daily training. The non-contact detection method can quickly determine whether there is current in the simulated explosive device wire and the magnitude and direction of the current, so as to quickly find the reverse shear wire. 2. It can be applied to actual combat. In the actual search and disposal of explosives, the non-contact detection method is used to detect the wire current in the detonator one by one, and then a large amount of experimental data accumulated through daily training is used for comparison and reference, which can assist the bomb disposal personnel to quickly find the reverse shear wire, so as to safely dispose of the explosive device.

[0031] in, Figure 3 A and B represent the two ends of the reverse shear wire. Since the reverse shear wire AB of the same material and thickness has different numbers under different models and voltage power supplies, multiple measurements and comparative analysis can be used to obtain the final accurate data of the reverse shear wire.

[0032] In an embodiment provided by the present disclosure, the explosive device reverse shear wire rapid identifier also includes a shielding partition 5, which divides the space inside the electromagnetic shielding box 3 into a detection area and a storage area, and a power supply and a detonating device 2 are provided in the storage area.

[0033] The shielding partition 5 clearly divides the internal space of the electromagnetic shielding box 3 into two areas, namely the detection area and the storage area. This separation helps to reduce electromagnetic interference between different areas and ensure the accuracy of the detection results. The storage area is used to place the power supply and the simulated detonating device 2, which are usually components with high potential dangers. The isolation of the shielding partition 5 can not only effectively prevent the operator from accidentally touching these components during the detection process, but also ensure the safety of operation. The detection area is the main area for the current detector 1 to operate. After being separated from the storage area by the shielding partition 5, the electromagnetic interference to the reverse shear line can be reduced to ensure the accuracy of the results.

[0034] Specifically, the electromagnetic shielding box 3 includes a box body 31 and a box cover 32, and the box cover 32 is rotatably connected to the box body 31 so that the simulated detonating device 2 can be placed in or removed from the box body 31. The box cover 32 is connected to the box body 31 by a rotatable connection method (such as a hinge, hinge, etc.), which can ensure the electromagnetic shielding effect in the box. The rotatable connection method allows the box cover 32 to be easily opened and closed, thereby facilitating the operator to place or remove the simulated detonating device 2, reducing the complexity and time cost during the operation process.

[0035] Further, a boss is provided on the box cover 32. In this way, the operator can hold the boss to open or close the box cover 32, making it convenient for the operator to operate.

[0036] In other embodiments, accessories such as handles and locks may be provided on the box cover 32 to better meet different operating requirements.

[0037] In one embodiment provided by the present disclosure, the electromagnetic shielding box 3 includes a substrate and an anti-electromagnetic radiation film attached to the surface of the substrate. The substrate serves as the basic supporting structure of the electromagnetic shielding box 3, and the upper substrate of the detection area is usually made of a transparent material with a certain strength. The anti-electromagnetic radiation film is attached to the surface of the substrate. The anti-electromagnetic radiation film adopts a highly transparent and high-definition 75% electromagnetic shielding film, and its electromagnetic shielding rate can reach 99%. Its light transmission efficiency can reach 100%, which can achieve electromagnetic shielding and facilitate observation of the size and direction of the data displayed by the detector.

[0038] Specifically, the electromagnetic radiation protection film is usually composed of a multi-layer composite material, which can form a continuous electromagnetic shielding layer to effectively block or attenuate electromagnetic radiation from the outside. At the same time, the electromagnetic radiation protection film also has good light transmittance and weather resistance, which can ensure that the device in the box 31 works normally and is not easily damaged. Since the electromagnetic radiation protection film is a prior art, it is not described in detail in this disclosure.

[0039] Specifically, the substrate is configured as a transparent substrate. The transparent substrate allows light to penetrate, so that the items in the box body 31 are clearly visible. This can reduce the number of times the box cover 32 is opened, reduce operational risks, and improve work efficiency.

[0040] Although the substrate is transparent, its surface still needs to be covered with an anti-electromagnetic radiation film to ensure that the electromagnetic shielding effect is not affected. In this way, the transparent substrate not only meets the visibility requirements, but also maintains the functionality of electromagnetic shielding.

[0041] In the present disclosure, the substrate is made of acrylic material.

[0042] In other embodiments, it may also be made of a glass substrate, a resin plate or any other suitable transparent material.

[0043] In the present disclosure, the current detector 1 is configured as a Hall current detector 1 or a magnetoresistive current detector 1. The Hall current detector 1 senses the current signal by detecting the change of the magnetic field, and can achieve electrical isolation between the measuring circuit and the measured current, such as current measurement in a low-voltage DC current environment.

[0044] The Hall sensor has the advantages of good linearity, fast response speed, and high measurement accuracy. It can detect current waveforms of any shape and is suitable for various fields such as variable frequency speed regulation devices and inverter devices.

[0045] Since the current detector 1 is a prior art, it will not be described in detail here. When selecting the current detector 1, it needs to be determined according to the specific application scenario and requirements.

[0046] In the present disclosure, a flexible electromagnetic shielding cloth 8 is provided at the detection hole 301, and the electromagnetic shielding cloth 8 completely covers the detection hole to prevent environmental electromagnetic interference with the reverse cutting line. In this way, the current detector can be removed from the electromagnetic shielding cloth at the detection hole from the box, and the current detector can be pinched from the outside by hand for detection, thereby further reducing the influence of electromagnetic radiation on the detection result.

[0047] Optionally, the electromagnetic shielding cloth 8 is configured as an extended cylindrical structure, which makes it more convenient to hold the current detector from the outside.

[0048] Finally, it should be noted that the utility model is not limited to the above optional implementations, and anyone can derive other various forms of products under the inspiration of the utility model. The above specific implementations should not be understood as limiting the scope of protection of the utility model. The scope of protection of the utility model shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A quick identifier for reverse shearing of explosive device, comprising a current detector and a simulated detonating device, wherein the detonating device has reverse shearing wire, characterized in that: The explosive device reverse shear wire quick identifier also includes an electromagnetic shielding box, a positive electrode terminal and a negative electrode terminal; the electromagnetic shielding box is provided with a detection hole so that the current detector can be inserted into or removed from the detection hole; one end of the detonating device is electrically connected to the power supply, and the other end is electrically connected to the positive electrode terminal and the negative electrode terminal respectively; The positive electrode terminal and the negative electrode terminal are arranged in the electromagnetic shielding box, and the positive electrode terminal is spaced apart from the negative electrode terminal, and the two ends of the reverse cutting wire are detachably connected to the positive electrode terminal and the negative electrode terminal, respectively, wherein the reverse cutting wire is opposite to the detection hole; a flexible electromagnetic shielding cloth is provided at the detection hole, and the electromagnetic shielding cloth completely covers the detection hole.

2. The explosive device reverse shear wire rapid identifier according to claim 1, characterized in that: The explosive device reverse shear wire rapid identifier also includes a shielding partition, which divides the inner space of the electromagnetic shielding box into a detection area and a storage area, and the storage area is provided with the power supply and the detonating device.

3. The explosive device reverse shear wire rapid identifier according to claim 1, characterized in that: The electromagnetic shielding box comprises a box body and a box cover, wherein the box cover is rotatably connected to the box body so that a simulated detonating device can be placed in the box body or removed from the box body.

4. The explosive device reverse shear wire rapid identifier according to claim 3, characterized in that: The box cover is provided with a boss.

5. The explosive device reverse shear wire rapid identifier according to claim 1, characterized in that: The electromagnetic shielding box comprises a substrate and an electromagnetic radiation protection film attached to the surface of the substrate.

6. The explosive device reverse shear wire rapid identifier according to claim 5, characterized in that: The substrate is configured as a transparent substrate.

7. The explosive device reverse shear wire rapid identifier according to claim 1, characterized in that: The current detector is configured as a Hall current detector or a magnetoresistive current detector.

8. The explosive device reverse shear wire rapid identifier according to claim 1, characterized in that: The electromagnetic shielding cloth is configured as an extended cylindrical structure.

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