Buffer device, piercing mechanism, and airport firefighting apparatus

Abstract

A buffer device, a piercing mechanism, and an airport firefighting apparatus. The buffer device is used for flattening, before a piercing mechanism performs piercing, a portion to be pierced, and comprises: a flange portion, used for being relatively and fixedly connected to a cylinder barrel (1.1) of a piercing cylinder (1) of the piercing mechanism; a pressing disc (4.1), wherein a first end of the pressing disc is used for being in pressing contact with the portion to be pierced; elastic members (4.4), arranged between the pressing disc (4.1) and the flange portion; guide rods (4.3), wherein a first end of each guide rod is connected to a second end of the pressing disc (4.1), and a second end of each guide rod passes through corresponding through holes on the flange portion and then is adjustably connected to a corresponding limiting adjustment member, and the elastic members (4.4) can be pre-compressed by a certain distance by adjusting the positions of the limiting adjustment members on the guide rods (4.3); and a displacement detection device, used for detecting relative displacement between the pressing disc (4.1) and the flange portion during the flattening of the portion to be pierced. By providing the buffer device at the front end of the piercing mechanism, the angle of the piercing mechanism does not need to be adjusted, and the operation difficulty is reduced.

Description

A buffer device, a puncture mechanism and airport fire-fighting equipment Technical Field

[0001] This application belongs to the field of fire and rescue equipment, and relates to a buffer device, a puncture mechanism and airport fire-fighting equipment, specifically a buffer device, a puncture mechanism and airport fire-fighting equipment for airport fire trucks. Background Technology

[0002] Currently, many manufacturers are developing airport fire trucks equipped with piercing arms for firefighting inside aircraft cabins. The piercing mechanism is installed at the top of the boom, and there are two piercing methods: one is a fixed piercing needle that pierces by moving the boom, and the other is a movable piercing needle that is ejected by a hydraulic cylinder. Because the outer skin of the cabin is curved, to ensure successful piercing, the angle of the piercing mechanism must be constantly adjusted to ensure the piercing needle is perpendicular to the skin. This requires operators to practice repeatedly to achieve proficiency, increasing the difficulty and time required for rescue operations. Summary of the Invention

[0003] Objective: In view of at least one of the above technical problems, this application provides a buffer device, a puncture mechanism and airport fire-fighting equipment. By setting a buffer device at the front end of the puncture mechanism, it is not necessary to adjust the angle of the puncture mechanism, thus reducing the difficulty of operation.

[0004] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows:

[0005] According to a first aspect of this application, a buffer device is provided for flattening the part to be punctured before puncture by a puncture mechanism, the buffer device comprising:

[0006] The flange section is used for a fixed connection with the cylinder of the piercing cylinder of the piercing mechanism;

[0007] The pressure plate, with its first end designed to make squeezing contact with the area to be punctured;

[0008] An elastic component is disposed between the pressure plate and the flange portion;

[0009] The guide rod has its first end connected to the second end of the pressure plate. After the second end of the guide rod passes through the corresponding through hole on the flange, it is adjustablely connected to a limit adjustment element. The elastic component can be pre-compressed by a certain stroke by adjusting the position of the limit adjustment element on the guide rod.

[0010] The displacement detection device is used to detect the relative displacement between the pressure plate and the flange during the flattening process of the part to be punctured.

[0011] In some embodiments, the flange portion includes a front flange and a rear flange, the front flange and the rear flange being fixedly mounted at the front end of the piercing mechanism;

[0012] The front and rear flanges have corresponding through holes for the guide rod to pass through. The first end of the guide rod is connected to the connecting side of the pressure plate, and the second end moves through the corresponding through holes on the front and rear flanges in sequence, and is located on the side of the rear flange away from the pressure plate. On the side of the front flange away from the pressure plate, a limit adjustment element is adjustablely provided in the middle of the guide rod.

[0013] The elastic component is disposed between the pressure plate and the front flange, and can be pre-compressed by a certain stroke by adjusting the position of the limit adjustment component.

[0014] In some embodiments, the displacement detection device is a detection plate, which is fixedly connected to the guide rod and can move together with the guide rod.

[0015] In some embodiments, the elastic member is sleeved on the outer periphery of the guide rod, with one end abutting against the pressure plate and the other end abutting against the flange portion.

[0016] In some embodiments, the elastic component is a spring.

[0017] In some embodiments, there are at least three guide rods, which are evenly distributed circumferentially on the front flange and the rear flange.

[0018] In some embodiments, the detection plate is fixedly connected to the second end of at least one guide rod.

[0019] In some embodiments, the pressure plate is a ring structure, and the pressure plate, the front flange, and the rear flange are coaxially arranged.

[0020] According to a second aspect of this application, a puncture mechanism is provided, comprising a puncture cylinder, a spray head, a puncture needle, and the aforementioned buffer device;

[0021] The piercing cylinder includes a cylinder barrel and a cylinder rod, and the telescopic end of the cylinder rod is connected to a nozzle for spraying extinguishing agent and a piercing needle for piercing.

[0022] The buffer device is installed at the front end of the puncture mechanism, and the flange is fixedly connected to the cylinder. When the puncture mechanism is in the non-ejection state, the needle is located inside the buffer device.

[0023] In some embodiments, the puncture mechanism further includes a small cavity accumulator and a large cavity accumulator, wherein the small cavity accumulator is connected to the small cavity of the puncture cylinder, and the large cavity accumulator is connected to the large cavity of the puncture cylinder through a control valve.

[0024] In some embodiments, the puncture mechanism further includes a sheath connected to the cylinder and sleeved around the telescopic end of the cylinder rod. When the cylinder rod is fully retracted, the injection head and the needle are located inside the sheath; when the cylinder rod is fully extended, the injection head and the needle are located outside the sheath.

[0025] Based on this, in some embodiments, the flange portion of the buffer device is fitted around the outer periphery of the sheath and is relatively fixedly connected by a connector; and in the uncompressed state of the buffer device, the pressure plate is located outside the free end of the sheath, with a certain distance between the pressure plate and the free end of the sheath.

[0026] In some embodiments, the puncture mechanism further includes a oscillating motor assembly; the oscillating motor assembly includes:

[0027] A swing motor, the power output end of which drives and connects to the puncture cylinder to drive the puncture cylinder to rotate;

[0028] An angle encoder is used to detect the rotation angle of the puncture mechanism.

[0029] Furthermore, in some embodiments, the swing motor includes a fixed body and a rotating body, the fixed body being fixedly connected to the boom, and the rotating body being driven connected to the cylinder of the puncture cylinder;

[0030] The angle encoder includes a housing and a rotating shaft. The rotating shaft of the angle encoder is coaxial with the rotating body and is fixedly connected by a flat key. The housing of the angle encoder is relatively fixedly mounted on the boom.

[0031] In some embodiments, the cylinder rod has a hollow structure with a flow hole in the middle for the passage of extinguishing agent. One end of the flow hole is connected to the extinguishing agent inlet, and the other end is connected to the jet hole on the nozzle.

[0032] Furthermore, the extinguishing agent inlet is connected to the extinguishing agent tank via a reversing valve. The extinguishing agent tank includes a water tank, a foam tank, a dry powder tank, and a cleaning gas tank. The type of extinguishing agent entering the puncture mechanism can be selected by controlling the reversing valve.

[0033] In some embodiments, the puncture mechanism further includes a proximity switch, which is signal-connected to the displacement detection device. When the displacement detection device detects that the pressure plate has moved a certain distance toward the cylinder, it triggers the proximity switch to indicate that the puncture conditions are met.

[0034] In some embodiments, when the displacement detection device is a detection plate, the proximity switch is mounted on the front mounting base of the cylinder and is located at a position corresponding to the detection plate.

[0035] In some embodiments, a lidar is installed at the front end of the puncture mechanism to detect the distance between the puncture mechanism and the part to be punctured.

[0036] In some embodiments, an infrared dual-light camera is installed at the front end of the puncture mechanism to identify the location of the fire from the outside via the infrared dual-light camera.

[0037] According to a third aspect of this application, an airport fire-fighting device is provided, including a boom and the aforementioned piercing mechanism, the piercing mechanism being disposed at the working end of the boom.

[0038] Beneficial Effects: The buffer device, puncture mechanism, and airport fire-fighting equipment provided in this application have the following advantages: By installing a buffer device at the front end of the puncture mechanism, the pressure plate of the buffer device squeezes the cabin skin. The pressure plate moves backward, causing the detection plate to move backward and triggering a proximity switch. The puncture ready indicator light in the cockpit illuminates, indicating that the puncture conditions are met. At this time, the cabin skin is flattened, and the puncture needle can easily pierce the skin. Because the skin is flattened and the pressure plate contacts the skin to provide support, even if the puncture needle is not perpendicular to the skin, it can still easily pierce the skin, reducing the difficulty of operation and greatly improving rescue efficiency. Attached Figure Description

[0039] Figure 1 is a schematic diagram of the overall structure of the puncture mechanism according to an embodiment of this application;

[0040] Figure 2 is a schematic diagram of the puncture cylinder in an embodiment of this application;

[0041] Figure 3 is a schematic diagram of the structure of the needle in the embodiment of this application;

[0042] Figure 4 is a schematic diagram of the structure of the injection head in an embodiment of this application;

[0043] Figure 5 is a schematic diagram of the buffer device in an embodiment of this application;

[0044] Figure 6 is a schematic diagram of the structure of the swing motor assembly in an embodiment of this application;

[0045] Figure 7 is a schematic diagram of the support assembly in an embodiment of this application;

[0046] Figure 8 is a schematic diagram of cabin puncture in an embodiment of this application;

[0047] Figure 9 is a schematic diagram of the puncture process in an embodiment of this application;

[0048] Figure 10 is a schematic diagram of the selection and switching of extinguishing agents in an embodiment of this application. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0051] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] To address the difficulties in puncture alignment and determining whether puncture conditions are met, this application provides a puncture mechanism with a buffer device. This device is installed at the front end of the puncture mechanism. A pressure plate compresses the cabin skin, and as the pressure plate moves backward, it moves a detection plate backward, triggering a proximity switch. This illuminates a puncture-ready indicator light in the cockpit, indicating that puncture conditions are met. At this point, the cabin skin is flattened, allowing the needle to easily pierce it. Because the skin is flattened and the pressure plate provides support in contact with the skin, the needle can pierce it even if it is not perpendicular to the skin, reducing operational difficulty and significantly improving rescue efficiency. To meet the firefighting needs of various aircraft fire types, it is equipped with four extinguishing agents: water, foam, dry powder, and clean gas. Different extinguishing agents can be switched according to firefighting requirements, enhancing the versatility of rescue operations.

[0055] Example 1: As shown in Figures 1 and 5, this example provides a buffer device to flatten the part to be punctured before the puncture mechanism punctures. The buffer device includes:

[0056] The flange section is used for a fixed connection with the cylinder of the piercing cylinder of the piercing mechanism;

[0057] Pressure plate 4.1, the first end of the pressure plate is used to squeeze and contact the part to be punctured;

[0058] The elastic component 4.4 is disposed between the pressure plate and the flange portion;

[0059] Guide rod 4.3, the first end of the guide rod is connected to the second end of the pressure plate, and the second end of the guide rod passes through the corresponding through hole on the flange and is adjustablely connected to a limit adjustment member, and the elastic component can be pre-compressed by a certain stroke by adjusting the position of the limit adjustment member on the guide rod;

[0060] The displacement detection device is used to detect the relative displacement between the pressure plate and the flange during the flattening process of the engine room skin.

[0061] In some embodiments, as shown in FIG5, the flange portion includes a front flange 4.5 and a rear flange 4.6, the front flange 4.5 and the rear flange 4.6 being fixedly mounted on the front end of the puncture mechanism, and the needle 2 being located inside the buffer device when the puncture mechanism is in the non-ejection state.

[0062] The front flange 4.5 and the rear flange 4.6 have corresponding through holes for the guide rod 4.3 to pass through. The first end of the guide rod 4.3 is connected to the connecting side of the pressure plate 4.1, and the second end moves through the corresponding through holes on the front flange 4.5 and the rear flange 4.6 in sequence, and is located on the side of the rear flange 4.6 away from the pressure plate 4.1. On the side of the front flange 4.5 away from the pressure plate 4.1, a limit adjustment element is adjustablely provided in the middle of the guide rod 4.3.

[0063] The elastic component 4.4 is disposed between the pressure plate 4.1 and the front flange 4.5, and can be pre-compressed by a certain stroke by adjusting the position of the limit adjustment component.

[0064] In some embodiments, the displacement detection device is a detection plate 4.7, which is fixedly connected to the guide rod 4.3 and can move together with the guide rod 4.3.

[0065] In some embodiments, the elastic member 4.4 is sleeved on the outer periphery of the guide rod 4.3, with one end abutting against the pressure plate 4.1 and the other end abutting against the flange portion. Further, in this embodiment, the elastic member 4.4 is a spring.

[0066] In some embodiments, there are at least three guide rods 4.3, which are evenly distributed circumferentially on the front flange 4.5 and the rear flange 4.6.

[0067] In some embodiments, the detection plate 4.7 is fixedly connected to the second end of at least one guide rod 4.3.

[0068] In some embodiments, the pressure plate 4.1 has a circular structure, and the pressure plate 4.1, the front flange 4.5, and the rear flange 4.6 are coaxially arranged.

[0069] In some specific embodiments, as shown in FIG5, the buffer device 4 includes a pressure plate 4.1, a front nut 4.2, a guide rod 4.3, a spring 4.4, a front flange 4.5, a rear flange 4.6, a detection plate 4.7, and a rear nut 4.8;

[0070] The front flange 4.5 and the rear flange 4.6 are provided with mounting holes 4-1. The front flange 4.5 and the rear flange 4.6 are fitted around the outer periphery of the sheath 5 and are fixedly installed on the sheath 5 through the mounting holes 4-1. The guide rod 4.3 passes through the corresponding holes on the front flange 4.5 and the rear flange 4.6 and is screwed into the pressure plate 4.1. The spring 4.4 is placed between the pressure plate 4.1 and the front flange 4.5. The spring is pre-compressed by the front nut 4.2. The detection plate 4.7 is fixedly installed on the guide rod 4.3 by the rear nut 4.8 and can move together with the guide rod 4.3.

[0071] Example 2: As shown in Figures 1 to 10, a puncture mechanism includes a puncture cylinder 1, a puncture needle 2, a spray head 3, and a buffer device 4 as described in Example 1;

[0072] The piercing cylinder 1 includes a cylinder barrel 1.1 and a cylinder rod 1.2. The telescopic end of the cylinder rod 1.2 is connected to a spray head 3 for spraying extinguishing agent and a piercing needle 2 for piercing.

[0073] The buffer device 4 is installed at the front end of the puncture mechanism, and the needle 2 is located inside the buffer device when the puncture mechanism is in the non-ejection state; the flange is relatively fixedly connected to the cylinder 1.1.

[0074] In some embodiments, the puncture mechanism further includes a small cavity accumulator 1.4 and a large cavity accumulator 1.5. The small cavity accumulator 1.4 is connected to the small cavity of the puncture cylinder 1, and the large cavity accumulator 1.5 is connected to the large cavity of the puncture cylinder 1 through a control valve 1.6.

[0075] In this embodiment, as shown in Figure 2, the puncture cylinder 1 includes a cylinder barrel 1.1, a cylinder rod 1.2, a connector 1.3, a small cavity accumulator 1.4, a large cavity accumulator 1.5, and a control valve 1.6; the cylinder barrel 1.1 is provided with a front mounting seat 1-1 and a rear mounting seat 1-2, and a fire extinguishing agent inlet 1-3 is provided at the tail end; the front part of the front mounting seat 1-1 is provided with a protective sleeve mounting surface 1-4 for installing a protective sleeve 5; the cylinder rod 1.2 adopts a hollow structure and has a flow hole 1-5 in the middle. The small cavity accumulator 1.4 is fixed to the cylinder 1.1 via connector 1.3 and is connected to the small cavity of the puncture cylinder. The large cavity accumulator 1.5 is fixed to the cylinder 1.1 via control valve 1.6 and is connected to the large cavity of the puncture cylinder. When the cylinder rod 1.2 retracts, the oil is compressed into the large cavity accumulator 1.5. When ejection puncture is required, the control valve 1.6 opens, and the oil quickly flows from the large cavity accumulator 1.5 into the large cavity of the cylinder 1.1. The oil in the small cavity quickly flows into the small cavity accumulator 1.4 to ensure the ejection speed.

[0076] In some embodiments, the cylinder rod 1.2 has a hollow structure with a flow hole 1-5 in the middle for the passage of extinguishing agent. One end of the flow hole 1-5 is connected to the extinguishing agent inlet 1-3, and the other end is connected to the jet hole 3-2 on the nozzle 3.

[0077] In some embodiments, for ease of fixed installation, the puncture mechanism further includes a support assembly 10, as shown in FIG7. The support assembly 10 includes a support 10.1, a guide rod 10.2, a U-bolt 10.3, and a nut 10.4. The support 10.1 is welded from a bent plate 10.1.1, a lower support plate 10.1.2, an upper support plate 10.1.3, and a stiffening plate 10.1.4, and is provided with a front mounting hole 10-1, a middle mounting hole 10-2, and a rear mounting hole 10-3.

[0078] In some embodiments, as shown in FIG1, the puncture cylinder 1 is connected to the front mounting hole 10-1 of the bracket assembly 10 via the front mounting seat 1-1 and to the rear mounting hole 10-3 of the bracket assembly 10 via the rear mounting seat 1-2. To prevent leakage caused by the joint 1.3 under stress, the small cavity accumulator 1.4 and the large cavity accumulator 1.5 are fixed to the upper support plate 10.1.3 and the lower support plate 10.1.2 respectively via U-bolts 10.3 and nuts 10.4. The guide rod 10.2 is installed between the upper support plate 10.1.3 and the lower support plate 10.1.2 to improve the structural rigidity.

[0079] In some embodiments, as shown in FIG3, the head of the needle 2 is provided with a conical needle tip 2-1, the main body structure 2-2 adopts a four-sided shape, four milled surfaces 2-3 are provided in the circumferential direction, and the tail is provided with an external thread 2-4.

[0080] In some embodiments, as shown in FIG4, the jet head 3 adopts a conical streamlined shape, with an internal thread 3-1 at the front end, an external thread 3-4 at the rear end, a number of jet holes 3-2 around the periphery, and four milled surfaces 3-3 in the circumferential direction.

[0081] In this embodiment, the spray head 3 is connected to the cylinder rod 1.2 via an external thread 3-4, and the piercing needle 2 is connected to the spray head 3 via an external thread 2-4 and an internal thread 3-1. The piercing needle 2 and the spray head 3 are provided with milled surfaces 2-3 and 3-3 in the circumferential direction, which are used to tighten the piercing needle 2 and the spray head 3 with a wrench to prevent loosening. The extinguishing agent inlet 1-3 of the piercing cylinder 1 is connected to the flow hole 1-5 in the cylinder rod 1.2, and the flow hole 1-5 is connected to the jet hole 3-2 on the spray head 3. The extinguishing agent flows from the tank through the reversing valve into the extinguishing agent inlet 1-3 of the piercing mechanism, through the flow hole 1-5 in the middle of the piercing cylinder 1, and finally sprays out through the jet hole 3-2 of the spray head 3 to extinguish the fire.

[0082] In this embodiment, the main body structure 2-2 of the needle 2 adopts a four-sided shape, and the needle tip 2-1 is conical. Simulation analysis shows that the conical needle tip is more likely to pierce the cabin skin, while the four-sided shape has a better cutting effect on the skin than the conical shape. The main body structure of the spray head 3 is a conical streamline shape, with jet holes 3-2 around the perimeter. The diameter and number of jet holes are designed according to the flow requirements. To ensure the maximum coverage area after the extinguishing agent is sprayed, the jet holes are at a certain angle to the axis, ensuring that the extinguishing agent forms an umbrella shape after being sprayed.

[0083] In some embodiments, the puncture mechanism further includes a sheath 5, which is connected to the cylinder 1.1 and sleeved around the telescopic end of the cylinder rod 1.2. When the cylinder rod 1.2 is fully retracted, the injection head 3 and the puncture needle 2 are located inside the sheath 5; when the cylinder rod 1.2 is fully extended, the injection head 3 and the puncture needle 2 are located outside the sheath 5.

[0084] Based on this, in some embodiments, the flange portion of the buffer device 4 is fitted around the outer periphery of the sheath 5 and is relatively fixedly connected by a connector; and in the uncompressed state of the buffer device 4, the pressure plate 4.1 is located outside the free end of the sheath 5, and a certain distance is left between the pressure plate 4.1 and the free end of the sheath 5.

[0085] In this embodiment, the sheath 5 is installed on the sheath mounting surface 1-4. When the cylinder rod 1.2 of the puncture cylinder 1 is fully retracted, the needle 2 is completely hidden inside the sheath 5, which can prevent the exposed needle from scratching other objects during the movement of the puncture mechanism.

[0086] In some embodiments, as shown in Figures 1 and 6, the puncture mechanism further includes a swing motor assembly 9; the swing motor assembly 9 includes a swing motor 9.1, the power output end of which drives the puncture cylinder 1 to rotate.

[0087] In some embodiments, the swing motor 9.1 includes a fixed body 9.1.1 and a rotating body 9.1.2. The fixed body 9.1.1 is fixedly connected to the boom, and the rotating body 9.1.2 is drivenly connected to the cylinder 1.1 of the puncture cylinder 1.

[0088] In this embodiment, the rotating body 9.1.2 is fixedly connected to the support assembly 10, and the cylinder 1.1 of the puncture cylinder 1 is fixedly installed on the support assembly 10. Therefore, the rotation of the rotating body 9.1.2 can drive the cylinder 1.1 of the puncture cylinder 1 on the support assembly 10 to rotate, thereby adjusting the relative angle between the puncture cylinder 1 and the boom.

[0089] In some embodiments, the swing motor assembly 9 further includes an angle encoder 9.2 for detecting the rotation angle of the puncture mechanism. The angle encoder 9.2 includes a housing 9.2.1 and a rotating shaft 9.2.2. The rotating shaft 9.2.2 of the angle encoder 9.2 is coaxial with the rotating body 9.1.2 and is fixedly connected by a flat key. The housing 9.2.1 of the angle encoder 9.2 is fixedly mounted on the boom.

[0090] In this embodiment, as shown in FIG6, the swing motor assembly 9 includes a swing motor 9.1, a rotary encoder 9.2, an outer flange bolt 9.3, an inner flange bolt 9.4, and an encoder bolt 9.5; the swing motor 9.1 includes a fixed body 9.1.1 and a rotating body 9.1.2, and is provided with an outer flange mounting surface 9-1 and an inner flange mounting surface 9-2. The angle encoder 9.2 includes a housing 9.2.1 and a rotating shaft 9.2.2. The outer flange mounting surface 9-1 mounts the fixed body 9.1.1 on the boom via outer flange bolts 9.3. The inner flange mounting surface 9-2 fixes the rotating body 9.1.2 to the central mounting hole 10-2 of the bracket assembly 10 via inner flange bolts 9.4. The outer housing 9.2.1 of the angle encoder 9.2 is mounted on the boom via encoder bolts 9.3. The rotating shaft 9.2.2 is coaxial with the rotating body 9.1.2 and is fixedly connected by a flat key. The rotating body 9.1.2 is driven to rotate by hydraulic fluid, thereby driving the puncture cylinder to rotate. At this time, the rotating shaft 9.2.2 of the angle encoder 9.2 rotates together, which can detect the rotation angle of the puncture mechanism and is used to monitor the position of the puncture mechanism.

[0091] In some embodiments, as shown in FIG1, the puncture mechanism further includes a proximity switch 7, which is signal-connected to the displacement detection device. When the displacement detection device detects that the pressure plate has moved a certain distance toward the cylinder, it triggers the proximity switch to indicate that puncture conditions are met. In some embodiments, when the displacement detection device is a detection plate, the proximity switch 7 is mounted on the front mounting base 1-1 of the cylinder and is located at a position corresponding to the detection plate 4.7.

[0092] In some embodiments, as shown in FIG1, a lidar 6 is installed at the front end of the puncture mechanism to detect the distance between the puncture mechanism and the cabin.

[0093] In some embodiments, as shown in FIG1, an infrared dual-light camera 8 is installed at the front end of the puncture mechanism to identify the location of the fire from the outside through the infrared dual-light camera 8.

[0094] Example 3: An airport fire-fighting device, as shown in Figure 8, includes a boom and the piercing mechanism described in Example 2, wherein the piercing mechanism is disposed at the working end of the boom.

[0095] As shown in Figure 8, taking the Airbus A380 as an example, this is a double-deck passenger aircraft. Generally, fires within the cabin originate in passenger seats, overhead luggage racks, and the checked baggage compartment at the bottom of the aircraft. There are four typical puncture points for these locations: high-level puncture (located at the top of the aircraft, typically targeting fires in passenger seats or the cockpit); mid-level (upper) and mid-level (lower) puncture (located in the upper and lower overhead luggage racks, respectively, targeting fires within the luggage racks); and low-level puncture (located in the checked baggage compartment, targeting fires in checked baggage). These typical locations can be extinguished with a single click via a preset program. In addition to these typical locations, punctures can also be used to extinguish fires in the fuel system and engines within the wings. The general procedure involves parking vehicle C at a certain distance from the aircraft, extending boom B, and moving puncture mechanism A to the corresponding puncture point on aircraft D for puncture and fire suppression. The figure shows the ideal orientation, with puncture mechanism A perpendicular to the cabin skin. Once a fire breaks out inside the cabin, it is difficult to detect the ignition point from the outside. The puncture mechanism of this application is equipped with an infrared dual-light camera 8 at its front end, which can quickly identify the location of the fire from the outside and carry out targeted rescue. When the fire gradually expands, it will produce a lot of thick smoke. At this time, it is difficult for the operator to observe whether the puncture mechanism has approached the cabin by eye. The puncture mechanism of this application is equipped with a lidar 6 at its front end, which can assist the operator in judging the distance between the puncture mechanism and the cabin.

[0096] As shown in Figure 9(a), when the piercing mechanism moves to the surface of the cabin skin, the distance between the detection plate 4.7 and the proximity switch 7 is L1 when the piercing mechanism and the cabin skin form an angle α. As shown in Figure 9(b), the piercing mechanism continues to move forward, and the pressure plate 4.1 squeezes the cabin skin. Since the spring 4.4 is pre-compressed to a certain stroke and has a certain spring force, it will squeeze the cabin skin to produce elastic deformation. When the deformation is greater than the spring force, the pressure plate 4.1 will move backward, driving the guide rod 4.3 and the detection plate 4.7 to move backward. When the distance between the detection plate 4.7 and the proximity switch 7 becomes L2, the proximity switch 7 triggers a signal, and the piercing ready indicator light in the cockpit lights up. As shown in Figure 9(c), the cabin skin is approximately flattened, and the pressure plate 4.1 abuts against the cabin skin to provide support. At this time, the operator presses the piercing extension button, and the piercing needle 2 is ejected and can successfully pierce the aircraft skin to spray fire extinguishing agent for fire fighting and rescue. After the rescue is completed, the needle is retracted, the puncture mechanism moves away from the cabin, the spring 4.4 resets and moves the pressure plate 4.1 forward, the distance between the detection plate 4.7 and the proximity switch 7 becomes L1, and the puncture ready indicator light goes out.

[0097] The puncture mechanism of this application can spray four types of extinguishing agents: water, foam, dry powder, and cleaning gas. These agents are designed to target different fire locations inside the aircraft. Water is primarily for Class A fires and can extinguish fires involving seats, interior trim, etc. Foam is primarily for Class B fires and can extinguish fuel fires. Dry powder is effective against Class A and B fires, as well as Class C and Class E fires, and can extinguish fires involving electrical equipment and wiring. Cleaning gas, primarily inert gas, is environmentally friendly and leaves no residue. It is particularly suitable for Class E fires and can extinguish fires involving precision instruments and equipment on the aircraft.

[0098] In this embodiment, the extinguishing agent inlets 1-3 are connected to the extinguishing agent tank via a reversing valve. The extinguishing agent tank includes a water tank, a foam tank, a dry powder tank, and a cleaning gas tank. The type of extinguishing agent entering the puncture mechanism can be selected by controlling the reversing valve. The reversing valve can be one or more electromagnetic reversing valves.

[0099] As shown in Figure 10, the reversing valve includes electromagnetic reversing valve I, electromagnetic reversing valve II, and electromagnetic reversing valve III. Based on the fire type, the corresponding extinguishing agent button is selected. After receiving the signal, the controller controls electromagnetic reversing valves I, II, and III. The corresponding extinguishing agent flows from the tank through the reversing valves into the extinguishing agent inlet 1-3 of the puncture mechanism, through the flow passage 1-5 in the middle of the puncture cylinder, and finally is sprayed out through the jet hole 3-2 of the nozzle to extinguish the fire.

[0100] In summary, the buffer device, puncture mechanism, and airport fire-fighting equipment provided in this application, by installing a buffer device at the front end of the puncture mechanism, uses the pressure plate of the buffer device to compress the cabin skin. The pressure plate moves backward and the displacement is detected by a displacement detection device to determine that the puncture conditions are met. At this time, the cabin skin is flattened, and the puncture needle can easily pierce the skin. Because the skin is flattened and the pressure plate is in contact with the skin to provide support, even if the puncture needle is not perpendicular to the skin, the puncture needle can still easily pierce the skin, reducing the difficulty of operation and greatly improving the rescue efficiency.

[0101] In addition, to meet the fire extinguishing needs of various types of fires on aircraft, it is equipped with four types of extinguishing agents: water, foam, dry powder, and clean gas. Different extinguishing agents can be switched according to the fire extinguishing needs, which improves the breadth of rescue capabilities.

[0102] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. This application has been disclosed above with reference to preferred embodiments, but it is not intended to limit this application. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A cushioning device, characterized in that, The buffer device is used for flattening the part to be punctured before the puncture mechanism punctures, and comprises: a flange plate part for fixedly connecting with a cylinder barrel of a puncture cylinder of the puncture mechanism; a pressure plate, a first end of the pressure plate being used for extrusion contact with the part to be punctured; an elastic component, the elastic component being arranged between the pressure plate and the flange plate part; a guide rod, a first end of the guide rod being connected to a second end of the pressure plate, a second end of the guide rod being adjustably connected to a limiting adjusting member after passing through a corresponding through hole of the flange plate part, and the elastic component being pre-compressed by adjusting a position of the limiting adjusting member on the guide rod; a displacement detection device for detecting a relative displacement between the pressure plate and the flange plate part during flattening of the part to be punctured.

2. The cushioning device of claim 1, wherein, The flange plate part comprises a front flange plate and a rear flange plate, and the front flange plate and the rear flange plate are fixedly mounted at a front end of the puncture mechanism. The front flange plate and the rear flange plate are provided with through holes for the guide rod to pass through at corresponding positions, a first end of the guide rod is connected to a connecting side of the pressure plate, a second end of the guide rod passes through the through holes of the front flange plate and the rear flange plate in sequence and is located at a side of the rear flange plate away from the pressure plate, and a limiting adjusting member is adjustably arranged at a middle part of the guide rod at a side of the front flange plate away from the pressure plate. The elastic component is arranged between the pressure plate and the front flange plate, and the elastic component is pre-compressed by adjusting the position of the limiting adjusting member.

3. The cushioning device of claim 1 or 2, wherein, The displacement detection device is a detection plate, the detection plate is fixedly connected to the guide rod and can move with the guide rod.

4. The cushioning device of claim 1, wherein, The elastic component is sleeved on an outer periphery of the guide rod, one end of the elastic component abuts against the pressure plate, and the other end of the elastic component abuts against the flange plate part.

5. The cushioning device of claim 2, wherein, The guide rod has at least three guide rods, and the guide rods are uniformly distributed in a circumferential direction of the front flange plate and the rear flange plate.

6. The cushioning device of claim 2, wherein, The pressure plate has a circular ring structure, and the pressure plate, the front flange plate and the rear flange plate are coaxially arranged.

7. A piercing mechanism, characterized by The puncture mechanism comprises a puncture cylinder, a spray head, a puncture needle and the buffer device of any one of claims 1 to 6. The puncture cylinder comprises a cylinder barrel and a cylinder rod, and a retractable end of the cylinder rod is connected to the spray head for spraying fire extinguishing agent and the puncture needle for puncture. The buffer device is mounted at a front end of the puncture mechanism, the flange plate part is fixedly connected to the cylinder barrel, and the puncture needle is located in the buffer device when the puncture mechanism is in an un-firing state.

8. The lancing mechanism of claim 7, wherein, The buffer device further comprises a small-cavity accumulator and a large-cavity accumulator, the small-cavity accumulator is in communication with a small cavity of the puncture cylinder, and the large-cavity accumulator is in communication with a large cavity of the puncture cylinder through a control valve.

9. The piercing mechanism of claim 7, wherein, The buffer device further comprises a sheath, the sheath is connected to the cylinder barrel and is sleeved on an outer periphery of a retractable end of the cylinder rod, the spray head and the puncture needle are located inside the sheath when the cylinder rod is in a fully retracted state, and the spray head and the puncture needle are located outside the sheath when the cylinder rod is in a fully extended state.

10. The lancing mechanism of claim 9, wherein, The flange plate part of the buffer device is sleeved on an outer periphery of the sheath and is fixedly connected through a connecting member, and the pressure plate is located outside a free end of the sheath and is spaced apart from the free end of the sheath when the buffer device is not in extrusion.

11. The lancing mechanism of claim 7, wherein, The buffer device further comprises a swing motor assembly, and the swing motor assembly comprises: A swing motor, a power output end of the swing motor is drivingly connected to the puncture cylinder for driving the puncture cylinder to rotate; A rotation angle encoder is used for detecting a rotation angle of the puncture mechanism.

12. The lancing mechanism of claim 11, wherein, The swing motor comprises a fixed body and a rotating body, the fixed body is fixedly connected and installed on the arm support, and the rotating body is drivingly connected to a cylinder barrel of the puncture cylinder. The rotation angle encoder comprises a housing and a rotating shaft, the rotating shaft of the rotation angle encoder is coaxial with the rotating body and is fixedly connected through a flat key, and the housing of the rotation angle encoder is fixedly installed on the arm support.

13. The lancing mechanism of claim 7, wherein, The cylinder rod adopts a hollow structure, and a flow hole for passing the fire extinguishing agent is arranged in the middle, one end of the flow hole is communicated with the fire extinguishing agent inlet, and the other end is communicated with a jet hole on the jet head.

14. The lancing mechanism of claim 13, wherein, The fire extinguishing agent inlet is connected with a fire extinguishing agent tank through a reversing valve, the fire extinguishing agent tank comprises a water tank, a foam tank, a dry powder tank and a clean gas tank, and the type of the fire extinguishing agent entering the puncture mechanism can be selected by controlling the reversing valve.

15. The piercing mechanism of claim 7, wherein, A proximity switch is further included, the proximity switch is signal connected with the displacement detection device, when the displacement detection device detects that the pressing disc moves a certain distance towards the cylinder barrel, the proximity switch is triggered, and it is reminded that the puncture condition is met.

16. The lancing mechanism of claim 7, wherein, A laser radar is installed at a front end of the puncture mechanism, and is used for detecting a distance between the puncture mechanism and a to-be-punctured part.

17. The lancing mechanism of claim 7, wherein, An infrared dual-light camera is installed at the front end of the puncture mechanism, and is used for identifying a fire position from outside through the infrared dual-light camera.

18. An airport fire fighting apparatus characterized by, The puncture mechanism comprises an arm support and the puncture mechanism according to any one of claims 7 to 17, and the puncture mechanism is arranged at a working end of the arm support.

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