Electromagnetic throwing projectile for rescue

Abstract

The utility model relates to rescue equipment technical field especially rescue electromagnet throws and throws the bullet, including the bullet body with the accommodation cavity, the rear part screw thread connection of bullet body has the tail cone with the taper contraction section, the outside of tail cone is provided with a plurality of tail vane, the rear end surface of tail vane and the rear end surface of tail cone between reserve the distance for avoiding electromagnetic transmitter coil end plate, still include: rescue assembly, set up in the front of bullet body, the taper contraction section is configured as when throwing and throwing the bullet flight and push rescue assembly acceleration, buffer assembly, set up in the inside of the accommodation cavity of bullet body, be configured as absorbing the launch impact, through this technical scheme, can through rescue assembly in the flight acceleration, while buffer assembly can effectively absorb the launch impact, protect inside rescue assembly, improve the rescue success rate.

Description

Technical Field

[0001] This utility model relates to the field of rescue equipment technology, and in particular to an electromagnetic throwing bomb for rescue. Background Technology

[0002] In water rescue scenarios, such as rivers, lakes, and seas, traditional rescue methods often face numerous challenges when someone falls into the water and requires emergency rescue. For example, rescuers need to carry heavy rescue equipment or need to get close to the person in the water to carry out the rescue, which not only increases the risk to the rescuers themselves but may also lead to low rescue efficiency due to factors such as distance and water currents.

[0003] Among existing ballistic missile launchers, pneumatic launchers have low accuracy and it is difficult to accurately control the launch distance and launch direction, while electromagnetic launchers have excessive launch impact force, making it difficult to launch them smoothly, thus affecting the success rate of rescue operations.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electromagnetic projectile for rescue applications.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an electromagnetic projectile for rescue, comprising a projectile body with a receiving cavity, a tail cone with a tapered converging section threadedly connected to the rear of the projectile body, multiple tail fins provided on the outside of the tail cone, and a distance reserved between the rear end face of the tail fins and the rear end face of the tail cone for avoiding the end plate of the electromagnetic transmitter coil, and further comprising: A rescue component is disposed at the front of the projectile body, and the tapered constriction section is configured to propel the rescue component to accelerate during the ejection flight. A buffer assembly, disposed inside the receiving cavity of the projectile, is configured to absorb the launch impact.

[0007] This technical solution enables the rescue component to accelerate during flight, improving rescue efficiency. At the same time, the buffer component can effectively absorb the launch impact, protect the internal rescue component, and increase the success rate of rescue.

[0008] Preferably, the rescue component includes: A rescue rope is at least partially housed within the receiving cavity of the projectile, with one end of the rescue rope extending to the outside of the tail cone; A fractured containment chamber is located at the front of the projectile; The rescue buoy, folded in the interior of the fractured containment chamber and connected to one end of the rescue rope, is configured to expand upon contact with water to fracture the containment chamber and provide buoyancy for the person in the water.

[0009] This technical solution enables an effective connection between the rescue rope and the rescue float. After the person falls into the water, the rescue float expands upon contact with water and automatically breaks open to contain the buoyancy chamber, quickly providing buoyancy to the person in the water.

[0010] Preferably, the accommodating compartment includes: The housing is threadedly connected to the end of the projectile. A fracture structure is provided on the surface of the housing; A water introduction mechanism, disposed on the surface of the housing, is configured to introduce water into the interior of the housing to trigger a rupture structure to rupture.

[0011] This technical solution allows water to be introduced into the shell via a water introduction mechanism, triggering a rupture structure and achieving reliable rupture of the containment chamber.

[0012] Preferably, the fracture structure includes: An opening is formed on the surface of the housing; A guide plate is bonded to the opening of the shell. An expansion crack indentation is pre-drilled on the central axis of the guide plate. When the rescue float expands, it squeezes the guide plate, and the guide plate begins to crack from the expansion crack indentation.

[0013] This technical solution ensures that the guide plate can accurately and effectively expand and crack when the rescue float expands, avoiding incomplete cracking, by using a pre-set expansion and cracking indentation.

[0014] Preferably, the rescue float is an inflatable float.

[0015] This technical solution enables the use of inflatable floats to quickly provide buoyancy when needed, thereby improving rescue efficiency.

[0016] Preferably, the inflatable float is an automatically inflatable swimming ring, which includes a water-soluble tablet, a spring-loaded needle, and a carbon dioxide cylinder. The water-soluble tablet is configured to release the spring-loaded needle after softening in water, thereby puncturing the carbon dioxide cylinder to inflate the swimming ring.

[0017] This technical solution enables automatic and rapid inflation of rescue buoys without manual intervention, thus improving the timeliness of rescue operations.

[0018] Preferably, it also includes a flow deflector, which is threadedly connected to the front of the housing.

[0019] This technical solution can optimize the aerodynamic performance of bomb throwing and improve flight stability.

[0020] Preferably, the head shape of the air deflector is parabolic or hemispherical.

[0021] This technical solution can further reduce flight drag and improve throwing distance and accuracy.

[0022] Preferably, the water inlet mechanism includes a plurality of radial holes arranged in a circumferential array on the surface of the housing.

[0023] This technical solution ensures that water can enter the shell quickly and evenly, triggering the rupture mechanism in a timely manner.

[0024] Preferably, the buffer assembly is placed at the rear of the rescue buoy and includes at least one buffer pad and at least one buffer rubber alternately disposed inside the receiving cavity.

[0025] This technical solution can more effectively absorb the impact of launch through a multi-layered buffer structure, further protecting the rescue buoy.

[0026] Compared with the prior art, the present invention has the following beneficial effects: By incorporating a rescue component at the front of the projectile and configuring a tapered converging section to accelerate the component during flight, the problem of potential damage to the rescue component due to impact during deployment is effectively solved, and the deployment speed and efficiency of the rescue component are improved. Simultaneously, a buffer component inside the projectile's housing effectively absorbs the launch impact, further protecting the internal rescue component and ensuring it remains undamaged during deployment, thus significantly improving the rescue success rate. This technical solution, through optimized projectile structural design, effectively protects the rescue component and accelerates its deployment during deployment, overcoming the shortcomings of existing rescue equipment during deployment and providing a more efficient and reliable solution for water rescue. The electromagnetic projectile for rescue described in this invention can accelerate swimming rings, adjust launch energy to control launch distance, and its shape design provides excellent flight stability, thereby enabling precise control of launch accuracy and significantly improving the rescue success rate. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial sectional view of the present invention.

[0028] In the diagram: 1. Radiator; 2. Radiator plate; 201. Crack indentation; 3. Shell; 301. Radial hole; 4. Swimming ring; 5. Buffer pad; 6. Buffer rubber; 7. Rescue rope; 8. Projectile body; 9. Tail cone; 10. Tail fin. Detailed Implementation

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] In maritime rescue scenarios, traditional methods such as manually throwing lifebuoys or using small drones often suffer from limitations in throwing distance, accuracy, susceptibility to wind, and untimely delivery of rescue supplies. For example, in a maritime rescue operation, if a person in the water is far from the rescue vessel and the sea is rough, manually throwing a lifebuoy would be difficult to accurately reach the person's location, and the throwing distance is limited. Using a small drone might be inadequate in terms of payload capacity and wind resistance, leading to low rescue efficiency or even failure. Failure to address these issues will severely impact the timeliness and success rate of maritime rescues, potentially causing the person in the water to miss the optimal rescue opportunity and suffer irreparable loss.

[0031] In response, this application proposes an electromagnetic launcher for rescue operations, which aims to achieve long-distance, high-precision delivery of rescue supplies through electromagnetic launch technology, effectively overcoming the limitations of traditional rescue methods.

[0032] like Figures 1 to 2 The electromagnetic launcher for rescue shown includes a projectile body 8 with a receiving cavity. The rear of the projectile body 8 is threadedly connected to a tail cone 9 with a tapered converging section. Multiple tail fins 10 are provided on the exterior of the tail cone 9. A distance is reserved between the rear end face of the tail fins 10 and the rear end face of the tail cone 9 to avoid obstructing the end plate of the electromagnetic launcher coil. The projectile body 8 is the main structure of the launcher and has an internal receiving cavity for accommodating rescue components and buffer components. The projectile body 8 is typically made of high-strength, lightweight materials to ensure it can withstand enormous impact forces during electromagnetic launch and maintain good aerodynamic performance during flight. The shape design of the projectile body 8 also fully considers aerodynamic principles to reduce flight drag. To improve flight stability, the tail cone 9 not only serves as a connector but, more importantly, transmits launch thrust during launch. Its conical converging section accelerates internal components such as the rescue rope during bomb disposal, ensuring the smooth and rapid release of rescue supplies. The materials chosen for the tail cone 9 also prioritize high strength and lightweight design to optimize overall performance. The main function of the tail fin 10 is to provide lift for bomb disposal and adjust flight attitude during flight to maintain overall flight stability. A certain distance is reserved between the rear end face of the tail fin 10 and the rear end face of the tail cone 9 to avoid interference with the coil end plate of the electromagnetic launcher during electromagnetic launch, ensuring a smooth launch process. The shape and size of the tail fin 10 have been optimized to minimize air resistance while ensuring stability. The rescue component, located at the front of the projectile body 8, has a tapered converging section configured to accelerate it during the projectile's flight. This means the rescue component is not completely fixed inside the projectile but can move relative to the projectile body 8 to some extent. When the projectile is flying at high speed, the variable-diameter surface inside the projectile body 8 interacts with the rescue component, further accelerating it and ensuring that rescue supplies can reach the target area at a faster speed. A buffer assembly, located inside the receiving cavity of the projectile 8, is configured to absorb the launch impact; during electromagnetic launch, the projectile is subjected to a huge instantaneous impact force. The presence of the buffer assembly can effectively absorb and disperse these impact forces, protecting the internal rescue components from damage and ensuring that the rescue supplies remain intact before deployment. The buffer assembly can use various elastic materials or structures, such as buffer pads or buffer rubber, to provide optimal cushioning.

[0033] The core of this projectile lies in utilizing the mature principle of electromagnetic launch. A pulsed current and a strong magnetic field are generated by the instantaneous discharge of an energy-storing pulse capacitor onto an electromagnetic coil, which in turn drives the armature to move, ultimately launching the rescue projectile. Traditional rescue projectiles mostly use compressed air or gunpowder for propulsion, resulting in relatively low overloads and lower requirements for the impact resistance of the projectile's internal components. Electromagnetic launch technology, in order to achieve high-speed launch over short distances, requires extremely high acceleration, with launch overloads reaching thousands of grams (gravitational acceleration). Such high overloads make it difficult for the projectile's internal mechanisms to withstand the enormous impact force. This solution incorporates a buffer component. Through the elastic and controllable compressive deformation of the buffer component, the "instantaneous, devastating impact" is prolonged into a "brief, tolerable compression process," thereby absorbing the impact force from the electromagnetic launch and preventing this force from directly acting on the rescue component, causing damage or accidental triggering. The specific overload capacity can be obtained through collaborative simulation experiments based on materials science (buffer component), structural mechanics (force transmission path), and energy management (energy dissipation).

[0034] Compared with existing technologies, the electromagnetic launcher for rescue in this embodiment has significant advantages. Traditional rescue launching devices often rely on manual labor or simple mechanical ejection, which limits the launching distance and accuracy, and provides insufficient protection for the internal rescue supplies during launch. This invention uses electromagnetic launch technology, enabling long-distance, high-precision launching, greatly improving rescue efficiency and success rate. Furthermore, through cleverly designed rescue and buffer components, this invention not only ensures the accelerated release of rescue supplies during flight but also effectively absorbs the launch impact, protecting the integrity of the rescue supplies. The conical contraction section of the tail cone 9 and the design of the tail fin 10 further optimize the aerodynamic performance and flight stability of the launcher, allowing it to maintain a good flight attitude even under complex weather conditions.

[0035] When using the electromagnetic rescuing projectile of this embodiment for rescue, the rescue component and the buffer component are first installed into the receiving cavity of the projectile body 8, and the tail cone 9 and tail fin 10 are ensured to be correctly installed. The rescue component is placed at the front of the projectile body 8, and its conical contraction section matches the internal structure of the projectile body 8. The buffer component is placed at the rear of the rescue component, closely fitting inside the receiving cavity to absorb the impact during launch. When the projectile is loaded into the electromagnetic launcher and the launch is initiated, the electromagnetic force will propel the projectile body 8 forward at high speed. During the launch phase, the buffer component will absorb most of the launch impact, protecting the internal rescue component. As the projectile body 8 accelerates, the conical contraction section of the tail cone 9 will generate relative motion with the rescue component, pushing the rescue component to accelerate further, allowing it to detach from the projectile body 8 at a faster speed. At the same time, the tail fin 10 provides lift and stability during flight, ensuring that the projectile can accurately fly to the target area according to the preset trajectory. When the projectile reaches the target area, the rescue component is released, for example, by deploying a rescue float to provide rescue for the person who has fallen into the water. The whole process is efficient and precise, greatly improving the ability of water rescue.

[0036] As one embodiment of this utility model, the rescue component includes: The rescue rope 7 is at least partially housed within the receiving cavity of the projectile body 8, with one end of the rescue rope 7 extending to the outside of the tail cone 9, thereby facilitating deployment and connection after the projectile is launched. A fractured containment chamber is located at the front of the projectile body 8; The rescue buoy, folded in place inside the fractured containment chamber and connected to one end of the rescue rope 7, is configured to expand upon contact with water to fracture the containment chamber and provide buoyancy for the person in the water.

[0037] The proposed solution integrates a rescue rope 7, a fractured containment chamber, and a rescue float. Upon arrival at the target water area, the rescue float rapidly expands upon contact with water, fracturing the containment chamber. This allows the rescue float to deploy and provide buoyancy for the person in the water. Simultaneously, one end of the rescue rope 7 is connected to the rescue float, while the other end extends to the outside of the tail cone 9, facilitating rescuers to pull the person ashore. This design ensures rapid deployment of the rescue float when needed, providing immediate and effective buoyancy support to the person in the water, significantly improving rescue efficiency and success rate.

[0038] Through the aforementioned technical solution, the electromagnetic rescuing projectile can effectively deploy the rescue rope 7 and quickly activate the rescue buoy, thereby providing timely and reliable buoyancy for the person in the water. This integrated rescue component design not only simplifies the rescue operation process but also significantly improves the rescue response speed and rescue effectiveness. It effectively solves the problems of untimely buoyancy provision or difficulty in deploying the rescue rope 7 in traditional rescue methods, greatly enhancing the practicality and effectiveness of the electromagnetic rescuing projectile.

[0039] In some preferred embodiments, the rescue rope 7 can be made of a high-strength, low-density synthetic fiber material to ensure its buoyancy and strength in water. The fractured containment chamber can be made of lightweight, easily fractured materials, such as thin-walled plastics or composite materials, and its structural design allows for rapid and controlled rupture upon expansion of the rescue float. The rescue float can be a water-inflatable life ring or life jacket with a pre-installed water-triggered inflation device, such as water-soluble tablets and carbon dioxide cylinders, to ensure rapid expansion upon contact with water. When the launcher hits the water, water enters through a specific structure on the containment chamber, triggering the expansion mechanism of the rescue float. The pressure generated by the expansion causes the containment chamber to rupture, thereby deploying the rescue float and providing buoyancy. Simultaneously, one end of the rescue rope 7 is securely connected to the rescue float, while the other end extends to the outside through the tail cone 9 of the launcher 8, facilitating operation by rescuers or the person in the water.

[0040] As one embodiment of this utility model, the accommodating compartment includes: The housing 3 is threadedly connected to the end of the projectile 8, thereby ensuring the structural stability and sealing between the housing and the projectile 8; The fracturing structure is set on the surface of the shell 3. Its function is to enable the shell 3 to be effectively fractured under specific conditions, thereby releasing the rescue float inside. A water introduction mechanism, disposed on the surface of housing 3, is configured to introduce water into the interior of housing 3 to trigger the rupture structure to rupture.

[0041] The proposed solution, by incorporating a shell 3 with a rupture structure and a water inlet mechanism, makes the release process of the rescue buoy more controllable and efficient. When the buoy is launched into the water, the water inlet mechanism quickly introduces water into the shell 3, triggering the rupture structure and causing the shell 3 to rupture. This allows the rescue buoy to expand smoothly and be released from the containment chamber, providing timely buoyancy for the person in the water. This design effectively solves the problem of untimely or incomplete rupture that may exist with traditional containment chambers, ensuring a high success rate for rescue missions.

[0042] As one embodiment of this utility model, the fracture structure includes: An opening is formed on the surface of housing 3; The guide plate 2 is bonded to the opening of the shell 3. An expansion crack indentation 201 is pre-drilled along the central axis of the guide plate 2. When the rescue float expands, it squeezes the guide plate 2, causing the guide plate 2 to crack from the expansion crack indentation 201. As a preferred embodiment, the expansion crack indentation can be made by laser etching, mechanical pressing, or other methods, and its depth and shape can be adjusted according to actual needs.

[0043] In this application, by providing an opening on the shell 3 and attaching a guide plate 2 with expansion crack indentations to the opening, the fracture strength of the shell 3 can be effectively reduced, and the cracks can be guided to propagate along a predetermined path. When the rescue float expands upon contact with water, the pressure generated will be concentrated on the guide plate 2, and the fracture will begin along the expansion crack indentation 201, thereby achieving controllable fracture of the shell 3. Compared to directly fractured shell 3, the solution of this application can reduce the energy required for fracture, improve the reliability and controllability of fracture, and avoid fracture failure or uncontrollable fracture direction.

[0044] In one embodiment of this utility model, the rescue float is an inflatable float. An inflatable float is a device that can rapidly expand by inflating to provide buoyancy.

[0045] As one embodiment of this utility model, the inflatable float is an automatically inflatable swimming ring 4. The swimming ring 4 includes a water-soluble tablet, a spring needle, and a carbon dioxide cylinder. The water-soluble tablet is configured to release the spring needle after softening in water, so as to puncture the carbon dioxide cylinder and inflate the swimming ring 4.

[0046] The self-inflating swimming ring 4 is a common lifesaving device on the market. Its working principle utilizes the solubility of water-soluble materials to trigger the inflation mechanism. Specifically, the water-soluble tablets are typically made of materials that dissolve rapidly in water. When they come into contact with water, they quickly soften and dissolve, releasing the internal spring-loaded needle. Upon release, the spring-loaded needle immediately punctures a pre-installed carbon dioxide cylinder, rapidly releasing high-pressure carbon dioxide gas into the swimming ring 4, thus completing the inflation process in a short time and providing immediate buoyancy support for the person in the water. Furthermore, the materials for the water-soluble tablets can be sodium chloride, sucrose, or polyvinyl alcohol, etc. These materials have good water solubility and are non-toxic, ensuring that they will not cause harm to the human body or the environment when used in water. The spring-loaded needle needs to have sufficient strength and hardness to ensure it can successfully puncture the carbon dioxide cylinder, and also needs to have a certain degree of rust resistance to adapt to the humid water environment. The carbon dioxide cylinder needs to be a product with good sealing and safety to prevent accidents such as gas leakage or explosion.

[0047] Therefore, the solution proposed in this application simplifies the overall structure of the rescue components and improves the reliability of the rescue process by using an automatically inflatable swimming ring 4 as the rescue float. At the same time, the rapid inflation characteristic of the automatically inflatable swimming ring 4 can also provide timely buoyancy support for the person in the water, improving rescue efficiency.

[0048] As one embodiment of this utility model, it also includes a flow guide 1, which is threadedly connected to the front of the housing 3. By adding the flow guide 1, the housing 3 can be protected and prevented from direct contact with the external environment.

[0049] The fairing 1 is an additional protective structure whose main function is to reduce air resistance during the launch of the bomb, while protecting the shell 3 from external impacts and damage. The fairing 1 is typically made of lightweight, high-strength materials, such as plastics or composite materials, to ensure that it provides sufficient protection without significantly increasing the overall weight of the launcher. The fairing 1 and the shell 3 are connected by threads, which not only facilitates installation but also ensures the reliability and stability of the connection.

[0050] Specifically, the fairing 1 provides multiple layers of protection for the shell 3 through its structural design and material properties. First, the fairing 1 effectively disperses and absorbs impact forces from the front, preventing these forces from acting directly on the shell 3. Second, the fairing 1 also prevents the shell 3 from directly contacting water or other debris, reducing the risk of corrosion and contamination. Furthermore, the fairing 1 improves the aerodynamic performance of the projectile, enhancing its flight stability and range.

[0051] As one embodiment of this utility model, the head shape of the flow guide 1 is parabolic or hemispherical.

[0052] Among them, the parabolic nose can effectively reduce air resistance and improve flight speed and stability, especially at high speeds, as it can better guide airflow and reduce turbulence. The hemispherical nose has the advantages of simple structure and ease of manufacture, while also reducing air resistance to a certain extent and providing better aerodynamic performance.

[0053] Specifically, the fairing 1, with its parabolic or hemispherical head design, allows for a smoother transition of the contact area between the projectile and the air during flight, thereby reducing air resistance. This design effectively improves the range and accuracy of the projectile, enabling it to reach the target area more precisely and enhancing rescue efficiency.

[0054] As one embodiment of this utility model, the water introduction mechanism includes multiple radial holes 301, which are arranged in a circumferential array on the surface of the housing 3 to facilitate the simultaneous introduction of water from multiple directions, ensuring that water can enter the interior of the housing 3 quickly and evenly, thereby rapidly triggering the rupture structure.

[0055] In a preferred embodiment, the number of radial holes 301 can be adjusted according to actual needs, for example, it can be set to 3, 4, 5 or more to achieve the best water intake effect. In addition, the diameter of the radial holes 301 can also be adjusted according to actual conditions to control the water intake speed and flow rate.

[0056] In the above embodiments of this application, although a rescue float is provided to rescue the person who has fallen into the water, the rescue float is easily damaged when the grenade is subjected to the impact of electromagnetic launch. In this regard, this application proposes an improvement solution, which places a buffer assembly at the rear of the rescue float, including at least one buffer pad 5 and at least one buffer rubber 6 alternately arranged inside the receiving cavity. Through the combined use of the buffer pad 5 and the buffer rubber 6, the launch impact can be effectively absorbed and the rescue float can be protected.

[0057] The buffer pad 5 can be made of a material with a certain degree of elasticity, such as sponge or foam, and its main function is to absorb impact energy. The buffer rubber 6 can be made of materials such as rubber or silicone, and its main function is to provide cushioning and shock absorption. The buffer pad 5 and the buffer rubber 6 are arranged alternately to form a multi-level buffer structure, which further improves the cushioning effect.

[0058] Specifically, when the launched bomb is impacted by the electromagnetic launch, the buffer pad 5 first absorbs most of the impact energy, and then the buffer rubber 6 further dampens the shock, thus effectively protecting the rescue buoy from damage. The number of buffer pads 5 and buffer rubber 6 can be adjusted according to actual needs to achieve the best buffering effect. As a preferred embodiment, the number of buffer pads 5 and buffer rubber 6 can be set to multiple, such as two buffer pads 5 and two buffer rubber 6.

[0059] As one possible implementation, the electromagnetic rescue projectile of this invention compresses the cushioning material during launch, allowing the swimming ring to avoid the peak acceleration of the launch impact. The casing reaches approximately 65 m / s in the short stroke. After electromagnetic launch, the swimming ring is slowly accelerated by the rear rope, cushioning pad, and rubber pad. The maximum stroke of the swimming ring is 260 mm. During the long stroke, the rescue projectile accelerates the swimming ring, eventually bringing the swimming ring to the same speed as the rescue projectile, reaching approximately 42 m / s. The average acceleration of the swimming ring is 345.8 g, significantly reducing the impact force during the acceleration phase. Through cushioning, its acceleration can be reduced from a maximum of over 5000 g to 345.8 g. The specific calculation process can be as follows: ; ; ; ; In the above formula, s represents the distance traveled in meters, and v represents the speed in meters per second. t represents acceleration, with units of meters per second², g represents gravitational acceleration, with a standard value of approximately 9.80665 meters per second², and t represents time, with units of seconds.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection claimed by this utility model, which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic projectile for rescue, comprising a projectile body (8) having a receiving cavity, wherein the rear of the projectile body (8) is threadedly connected to a tail cone (9) having a tapered converging section, and the tail cone (9) is provided with a plurality of tail fins (10) on its exterior, characterized in that, Also includes: A rescue component is disposed at the front of the projectile (8), and the tapered constriction section is configured to accelerate the rescue component during the ejection flight; A buffer assembly, disposed inside the receiving cavity of the projectile (8), is configured to absorb the launch impact.

2. The electromagnetic projectile for rescue as described in claim 1, characterized in that, The rescue components include: The rescue rope (7) is at least partially housed within the receiving cavity of the projectile (8), with one end of the rescue rope (7) extending to the outside of the tail cone (9); A fractured containment chamber is provided at the front of the projectile (8); The rescue buoy, folded in the interior of the fractured containment chamber and connected to one end of the rescue rope (7), is configured to expand upon contact with water to fracture the containment chamber and provide buoyancy for the person in the water.

3. The electromagnetic projectile for rescue as described in claim 2, characterized in that, The accommodating compartment includes: The housing (3) is threadedly connected to the end of the projectile (8); A fracture structure is provided on the surface of the housing (3); A water introduction mechanism, disposed on the surface of the housing (3), is configured to introduce water into the interior of the housing (3) to trigger the rupture structure to rupture.

4. The electromagnetic projectile for rescue as described in claim 3, characterized in that, The fracture structure includes: An opening is formed on the surface of the housing (3); The guide plate (2) is bonded to the opening of the shell (3). The guide plate (2) has a pre-drilled expansion crack (201) on its central axis. After the rescue float expands, it squeezes the guide plate (2), and the guide plate (2) starts to crack from the expansion crack (201).

5. The electromagnetic projectile for rescue as described in claim 2, characterized in that, The rescue float is an inflatable float.

6. The electromagnetic projectile for rescue as described in claim 5, characterized in that, The inflatable float is an automatically inflatable swimming ring (4). The swimming ring (4) includes a water-soluble tablet, a spring needle, and a carbon dioxide cylinder. The water-soluble tablet is configured to release the spring needle after softening in water, so as to puncture the carbon dioxide cylinder and inflate the swimming ring (4).

7. The electromagnetic projectile for rescue as described in claim 3, characterized in that, It also includes a flow deflector (1), which is threadedly connected to the front of the housing (3).

8. The electromagnetic projectile for rescue as described in claim 7, characterized in that, The head shape of the fairing (1) is parabolic or hemispherical.

9. The electromagnetic projectile for rescue as described in claim 3, characterized in that, The water inlet mechanism includes a plurality of radial holes (301), which are arranged in a circumferential array on the surface of the housing (3).

10. The electromagnetic projectile for rescue as described in claim 2, characterized in that, The buffer assembly is placed at the rear of the rescue float and includes at least one buffer pad (5) and at least one buffer rubber (6) alternately arranged inside the receiving cavity.

Images