A fire fighting device
By designing a fire-fighting device that includes a moving drive component and a puncture component, the problem of cooling water not being able to quickly enter the battery box in the existing technology was solved, realizing rapid cooling and fire extinguishing of the battery and avoiding the risk of explosion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG LEAD INTELLIGENT LOGISTICS TECH CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-08-04
AI Technical Summary
Existing fire suppression systems are unable to quickly introduce cooling water into the battery compartment, leading to a risk of battery thermal runaway and explosion.
A fire-fighting device was designed, comprising a housing, a moving drive assembly, and a puncturing assembly. The moving drive assembly lowers the loading assembly into the inner cavity of the housing, immersing the battery in cooling water. The puncturing assembly punctures the battery to introduce cooling water for rapid cooling.
It achieves rapid cooling and fire suppression inside the battery, preventing fires and explosions.
Smart Images

Figure CN224585225U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery manufacturing equipment technology, specifically a fire-fighting device. Background Technology
[0002] Lithium-ion batteries are widely used in electric vehicle battery pack systems due to their high energy density and low carbon footprint. As production capacity demands increase and battery production lines operate at full capacity, safety requirements also rise. To prevent fires, production lines need to be equipped with fire suppression systems. In the event of thermal runaway, the affected battery is quickly transferred to the water tank of the fire suppression system for rapid cooling and extinguishing, preventing a fire.
[0003] However, since batteries generally consist of a battery box and battery modules installed inside the battery box, when the battery is transferred to the water tank of the fire-fighting device, the presence of the battery box prevents the water in the tank from quickly entering the battery box. As a result, the battery modules inside the battery box cannot be cooled down and extinguished quickly, which may lead to the battery thermal runaway continuing to develop and posing a risk of explosion. Utility Model Content
[0004] Therefore, it is necessary to provide a fire-fighting device that can quickly cool and extinguish batteries, addressing the aforementioned problems.
[0005] A fire-fighting device, comprising:
[0006] The housing has an internal cavity for holding cooling water;
[0007] Mobile driver components;
[0008] A loading component for loading a battery, the loading component being mounted on the drive end of the mobility drive component;
[0009] A puncture component, disposed on the loading component, is used to puncture the battery on the loading component.
[0010] In some embodiments, the top of the housing has an opening communicating with the inner cavity, the loading assembly is arranged above the housing, and the moving drive assembly is capable of driving the loading assembly to descend or ascend so that the loading assembly enters or exits the inner cavity of the housing through the opening.
[0011] In some embodiments, the loading assembly has a loading space for loading a battery;
[0012] The puncture assembly includes a transfer seat, a motion drive, and a puncture rod. The transfer seat is movably connected to the loading assembly. The motion drive is mounted on the loading assembly and connected to the transfer seat. One end of the puncture rod is connected to the transfer seat, and the other end extends toward the loading space.
[0013] In some embodiments, the motion drive is used to move the transfer seat relative to the loading assembly so that the transfer seat drives the piercing rod to pierce the battery in the loading space.
[0014] In some embodiments, the loading assembly includes a motion frame, a mounting plate, and a loading rack. The motion frame is connected to the drive end of the motion drive assembly, and the loading rack is connected to the motion frame and has the loading space.
[0015] The mounting plate is installed between the moving frame and the loading frame. The transfer seat is movably connected to the side of the mounting plate away from the loading frame. The piercing rod is disposed through the mounting plate, and the end of the mounting plate facing the moving frame is connected to the transfer seat. The end of the mounting plate facing the loading frame is located within the loading space.
[0016] In some embodiments, the mounting plate has a through hole, and the piercing assembly further includes a guide sleeve installed at the through hole, with the piercing rod passing through the guide sleeve.
[0017] In some embodiments, the puncture assembly further includes a rotary drive mounted on the transfer seat, the puncture rod being rotatably connected to the transfer seat and connected to the drive end of the rotary drive.
[0018] In some embodiments, the number of piercing rods is multiple.
[0019] In some embodiments, the puncture assembly further includes a rotary drive, a first transmission belt, and a plurality of pulleys;
[0020] Each of the piercing rods is rotatably connected to the transfer seat, the rotary drive is mounted on the transfer seat, and the drive end of the rotary drive is connected to any of the piercing rods; each of the piercing rods is equipped with a pulley, and the first transmission belt is sleeved on each of the pulleys.
[0021] In some embodiments, the fire-fighting device further includes a support frame, the loading assembly is movably connected to the support frame, and the movement drive assembly is mounted on the support frame and connected to the loading assembly.
[0022] In the event of thermal runaway of a battery during use, the aforementioned fire-fighting device places the affected battery on the loading assembly. The moving drive assembly then moves the loading assembly into the inner cavity of the enclosure, immersing the battery in cooling water within the enclosure. Simultaneously, the puncture assembly punctures the battery, allowing cooling water to rapidly enter and quickly cool the battery's interior, extinguishing the fire and preventing explosions and fires. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the fire-fighting device in one embodiment of this application;
[0024] Figure 2 for Figure 1 The diagram shows the structural schematics of the loading and puncturing components of the fire-fighting device.
[0025] Figure 3 for Figure 2 The main view of the loading component and the puncturing component is shown. Detailed Implementation
[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0032] Please see Figures 1 to 3 This application provides a fire-fighting device, including a housing 10, a movement drive assembly 20, a loading assembly 30, and a puncture assembly 40 (see...). Figure 2 or Figure 3 The housing 10 has an inner cavity 11 for holding cooling water. A loading assembly 30 is used to load the battery, and the loading assembly 30 is connected to the drive end of a moving drive assembly 20, enabling the moving drive assembly 20 to drive the loading assembly 30 into or out of the inner cavity 11 of the housing 10. A puncture assembly 40 is provided on the loading assembly 30 for puncturing the battery on the loading assembly 30.
[0033] In the event of thermal runaway of a battery during use, the aforementioned fire-fighting device places the battery on the loading assembly 30. The moving drive assembly 20 then moves the loading assembly 30 into the inner cavity 11 of the housing 10, immersing the battery in cooling water within the housing 10. Simultaneously, the puncture assembly 40 punctures the battery, allowing cooling water to rapidly enter and quickly cool the battery's interior, thus preventing explosions and fires.
[0034] Specifically, in this embodiment, the top of the housing 10 has an opening 13 communicating with the inner cavity 11. A loading assembly 30 is arranged above the housing 10. A moving drive assembly 20 can drive the loading assembly 30 to descend or ascend, allowing it to enter or exit the inner cavity 11 of the housing 10 through the opening 13 at the top of the housing 10. Thus, when a battery experiences thermal runaway, the battery is placed on the loading assembly 30, and the moving drive assembly 20 drives the loading assembly 30 to descend until it enters the inner cavity 11 of the housing 10 through the opening 13 at the top of the housing 10, immersing the battery on the loading assembly 30 in cooling water within the housing 10. Simultaneously, a puncturing assembly 40 punctures the battery on the loading assembly 30, allowing cooling water to rapidly enter the battery's interior, achieving rapid cooling and fire extinguishing of the battery's internal structure. After the cooling and fire extinguishing are completed, the moving drive assembly 20 drives the loading assembly 30 to rise until the loading assembly 30 exits the inner cavity 11 of the housing 10 through the opening 13 at the top of the housing 10.
[0035] In a specific embodiment, the fire-fighting device further includes a support frame 50, on which the loading assembly 30 is vertically and elliptically connected. A motion drive assembly 20 is mounted on the support frame 50 and connected to the loading assembly 30, thereby enabling the motion drive assembly 20 to drive the loading assembly 30 to rise or fall relative to the support frame 50.
[0036] Specifically, in this embodiment, the moving drive assembly 20 includes a rotating shaft 21, a drive member 22, a first sprocket 23, and a first transmission chain. The rotating shaft 21 is rotatably connected to the support frame 50. The drive member 22 is mounted on the support frame 50 and is drivenly connected to the rotating shaft 21, enabling the drive member to drive the rotating shaft 21 to rotate relative to the support frame 50 around its own axis. The first sprocket 23 is mounted on the rotating shaft 21, enabling the first sprocket 23 to rotate with the rotating shaft 21. The first transmission chain is wound around the first sprocket 23, and one end of the first transmission chain is connected to the loading assembly 30. Thus, when the drive member 22 drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the first sprocket 23 to rotate, and the first sprocket 23 then drives the loading assembly 30 to rise or fall via the first transmission chain.
[0037] Furthermore, the mobile drive assembly 20 also includes a driving pulley 27, a driven pulley 28, and a second transmission belt 29. The driving pulley 27 is mounted on the output shaft of the drive member 22, enabling the drive member 22 to drive the driving pulley 27 to rotate. The driven pulley 28 is mounted on the rotating shaft 21, enabling the driven pulley 28 to rotate synchronously with the rotating shaft 21. The second transmission belt 29 is tensioned and sleeved between the driving pulley 27 and the driven pulley 28, so that the rotation of the driving pulley 27 can drive the driven pulley 28 to rotate. Thus, when the drive member 22 drives the driving pulley 27 to rotate, the driving pulley 27 drives the driven pulley 28 to rotate via the second transmission belt 29, and the driven pulley 28 then drives the rotating shaft 21 to rotate, thereby realizing the drive member 22 driving the rotating shaft 21 to rotate. Optionally, the drive member 22 can be a motor.
[0038] Furthermore, the mobile drive assembly 20 also includes a counterweight 291, which is vertically and flexibly connected to the support frame 50. One end of the first transmission chain is connected to the loading assembly 30, and the other end is connected to the counterweight 291. When the drive member 22 drives the rotating shaft 21 to rotate around a first rotation direction, the rotating shaft 21 drives the first sprocket 23 to rotate around the first rotation direction. The first sprocket 23 then drives the loading assembly 30 to rise through the first transmission chain, while simultaneously driving the counterweight 291 to fall. When the drive member 22 drives the rotating shaft 21 to rotate around a second rotation direction opposite to the first rotation direction, the rotating shaft 21 drives the first sprocket 23 to rotate around the second rotation direction. The first sprocket 23 then drives the loading assembly 30 to fall through the first transmission chain, while simultaneously driving the counterweight 291 to rise. In this way, the counterweight 291 balances the weight of the loading assembly 30, ensuring that the lifting and lowering movement of the loading assembly 30 is more stable and reliable, and also helps to reduce the load on the drive member, greatly reducing the risk of the loading assembly 30 falling.
[0039] Furthermore, the mobile drive assembly 20 also includes a driven shaft 24, a second sprocket 26, a third sprocket 25, and a second transmission chain. The driven shaft 24 is rotatably connected to the support frame 50. The axial directions of the driven shaft 24 and the rotating shaft 21 are both parallel to the first horizontal direction X1 and are spaced apart along a second horizontal direction X2 perpendicular to the first horizontal direction X1. The second sprocket 26 is mounted on the rotating shaft 21 to rotate with it. The third sprocket 25 is mounted on the driven shaft 24 to rotate with it. The second transmission chain is wound around the second sprocket 26 and the third sprocket 25, with one end connected to the counterweight 291 and the other end connected to the loading assembly 30, thereby using the first and second transmission chains to jointly lift the loading assembly 30.
[0040] Thus, when the drive component 22 drives the rotating shaft 21 to rotate in the first direction of rotation, the rotating shaft 21 drives the first sprocket 23 and the second sprocket 26 on it to rotate in the first direction of rotation. The first sprocket 23 drives the loading component 30 to rise through the first transmission chain, and at the same time drives the counterweight 291 to fall. Meanwhile, the second sprocket 26 drives the loading component 30 to rise through the second transmission chain, and at the same time drives the counterweight 291 to fall. During this process, the driven shaft 24 and the third sprocket 25 on it rotate together with the second transmission chain.
[0041] When the drive unit 22 drives the rotating shaft 21 to rotate in a second direction opposite to the first direction of rotation, the rotating shaft 21 drives the first sprocket 23 and the second sprocket 26 on it to rotate in the second direction of rotation. The first sprocket 23 drives the loading assembly 30 to descend through the first transmission chain, and at the same time drives the counterweight 291 to rise. Meanwhile, the second sprocket 26 drives the loading assembly 30 to descend through the second transmission chain, and at the same time drives the counterweight 291 to rise.
[0042] It should be noted that one end of the first transmission chain is connected to the counterweight 291, and the other end is connected to the loading assembly 30, with the connection point between the first transmission chain and the loading assembly 30 located at one end of the loading assembly 30 in the second horizontal direction X2. One end of the second transmission chain is connected to the counterweight 291, and the other end is connected to the loading assembly 30, with the connection point between the second transmission chain and the loading assembly 30 located at the other end of the loading assembly 30 in the second horizontal direction X2. In other words, the first and second transmission chains are respectively connected to both ends of the loading assembly 30 in the second horizontal direction X2, thereby making the hoisting of the loading assembly 30 more stable and reliable.
[0043] It should be noted that the mobile drive component 20 is not limited to using a chain drive structure. In other embodiments, the mobile drive component 20 may also use other drive modules, as long as they can drive the loading component 30 to rise and fall. This is not limited here.
[0044] In an embodiment of this application, the loading assembly 30 has a loading space 37 for loading a battery. The puncture assembly 40 includes a transfer seat 41, a motion drive 42, and a puncture rod 43. The transfer seat 41 is vertically and elliptically connected to the loading assembly 30. The motion drive 42 is mounted on the loading assembly 30 and connected to the transfer seat 41, such that the motion drive 42 can drive the transfer seat 41 to rise or fall relative to the loading assembly 30. One end of the puncture rod 43 is connected to the transfer seat 41, and the other end extends toward the loading space 37. Thus, when the motion drive 42 drives the transfer seat 41 to fall, the transfer seat 41 moves the puncture rod 43 toward the battery in the loading space 37 until the battery is punctured. After the battery is punctured, the motion drive 42 drives the transfer seat 41 to rise, and the transfer seat 41 moves the puncture rod 43 away from the battery in the loading space 37 and resets.
[0045] Specifically, in this embodiment, the loading assembly 30 includes a motion frame 31, a mounting plate 35, and a loading rack 33. The motion frame 31 is vertically connected to the support frame 50 and is connected to one end of the first transmission chain and one end of the second transmission chain. The loading rack 33 is fixedly connected to the lower side of the motion frame 31 and has the aforementioned loading space 37. The mounting plate 35 is installed between the motion frame 31 and the loading rack 33. The aforementioned transfer seat 41 is vertically connected to the side of the mounting plate 35 opposite to the loading rack 33. The motion drive 42 is also installed on the side of the mounting plate 35 opposite to the loading rack 33 and is drivenly connected to the transfer seat 41. A piercing rod 43 is disposed through the mounting plate 35, and the piercing rod 43 is located at the end of the mounting plate 35 facing the motion frame 31 (i.e., the upper end of the piercing rod 43) and connected to the transfer seat 41, while the piercing rod 43 is located at the end of the mounting plate 35 facing the loading rack 33 (i.e., the lower end of the piercing rod 43) within the loading space 37. Alternatively, the motion drive 42 may be a cylinder.
[0046] Thus, when it is necessary to puncture the battery, the motion drive 42 drives the transfer seat 41 to descend, thereby moving the puncture rod 43 toward the loading space 37 until the battery is punctured. After the battery is punctured, the motion drive 42 drives the transfer seat 41 to rise, thereby moving the puncture rod 43 toward the direction of exiting the loading space 37 and resetting it.
[0047] Furthermore, the puncture assembly 40 also includes a rotary drive 44 mounted on the transfer seat 41. The puncture rod 43 is rotatably connected to the transfer seat 41 and connected to the drive end of the rotary drive 44, enabling the rotary drive 44 to drive the puncture rod 43 to rotate around its own axis. Thus, under the driving action of the motion drive 42, as the transfer seat 41 drives the puncture rod 43 to puncture the battery, the rotary drive 44 drives the puncture rod 43 to rotate around its own axis, thereby greatly reducing the difficulty of puncturing the battery and ensuring that the puncture rod 43 can accurately and promptly puncture the battery. Optionally, the rotary drive 44 can be a motor.
[0048] It should be noted that the number of piercing rods 43 is not limited to one. In other embodiments, the number of piercing rods 43 may also be multiple (i.e., two or more).
[0049] In embodiments where there are multiple piercing rods 43, the piercing assembly 40 further includes a first transmission belt 46 and multiple pulleys 45. Each piercing rod 43 is rotatably connected to the transfer seat 41 about its own axis, wherein any piercing rod 43 is adjacent to the driving end of the rotary drive member 44, so that the rotary drive member 44 can drive the piercing rod 43 to rotate. Each piercing rod 43 is equipped with a pulley 45, so that each piercing rod 43 and its pulley 45 can rotate together. The first transmission belt 46 is tensioned and sleeved on each pulley 45, so that when the rotary drive member 44 drives one piercing rod 43 to rotate, the other piercing rods 43 are driven to rotate synchronously through the first transmission belt 46 and each pulley 45. Thus, under the driving action of the motion drive component 42, as the transfer seat 41 drives each piercing rod 43 to pierce the battery simultaneously, the rotation drive component 44 drives one of the piercing rods 43 to rotate around its own axis. At the same time, through the first transmission belt 46 and each pulley 45, the other piercing rods 43 are driven to rotate synchronously, which greatly reduces the difficulty of each piercing rod 43 piercing the battery and ensures that each piercing rod 43 can accurately and timely pierce the battery.
[0050] It should be noted that, through the transmission action of the first transmission belt 46 and each pulley 45, each piercing rod 43 can rotate synchronously. That is, a single rotary drive component 44 can drive each piercing rod 43 to rotate synchronously, greatly reducing the number of rotary drive components 44 and thus helping to reduce equipment costs. Optionally, the first transmission belt 46 can be a synchronous belt, and the pulleys 45 can be synchronous pulleys.
[0051] In a specific embodiment, the mounting plate 35 has a through hole, and the piercing assembly 40 also includes a guide sleeve 47 (see...). Figure 3 The guide sleeve 47 is mounted on the mounting plate 35 through a through hole. The piercing rod 43 is disposed through the guide sleeve 47, so that the piercing rod 43 can move up and down relative to the mounting plate 35 along the axial direction of the guide sleeve 47, and can also rotate relative to the mounting plate 35 about its own axis.
[0052] Understandably, if multiple puncture rods 43 are used, multiple through holes are provided on the mounting plate 35, and multiple guide sleeves 47 are also provided. Each guide sleeve 47 is installed on the mounting plate 35 through a corresponding through hole. Each puncture rod 43 is installed through a corresponding guide sleeve 47. In this way, each guide sleeve 47 guides each puncture rod 43, ensuring that each puncture rod 43 can accurately and promptly puncture the battery.
[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A fire fighting device, characterized in that include: The housing (10) has an inner cavity (11) for holding cooling water; Mobile drive component (20); A loading assembly (30) for loading the battery is mounted on the drive end of the mobile drive assembly (20); A puncture component (40) is disposed on the loading component (30) for puncturing the battery on the loading component (30).
2. The fire fighting device of claim 1, wherein The top of the housing (10) has an opening (13) communicating with the inner cavity (11). The loading assembly (30) is arranged above the housing (10). The moving drive assembly (20) is capable of driving the loading assembly (30) to descend or rise, so that the loading assembly (30) enters or exits the inner cavity (11) of the housing (10) through the opening (13).
3. The fire-fighting device according to claim 1, characterized in that, The loading assembly (30) has a loading space (37) for loading the battery; The puncture assembly (40) includes a transfer seat (41), a motion drive (42), and a puncture rod (43). The transfer seat (41) is movably connected to the loading assembly (30). The motion drive (42) is mounted on the loading assembly (30) and connected to the transfer seat (41). One end of the puncture rod (43) is connected to the transfer seat (41), and the other end extends toward the loading space (37).
4. The fire fighting device of claim 3, wherein The motion drive (42) is used to drive the transfer seat (41) to move relative to the loading assembly (30) so that the transfer seat (41) drives the piercing rod (43) to pierce the battery in the loading space (37).
5. The fire fighting device of claim 3, wherein The loading assembly (30) includes a motion frame (31), a mounting plate (35), and a loading frame (33). The motion frame (31) is connected to the drive end of the moving drive assembly (20), and the loading frame (33) is connected to the motion frame (31) and has the loading space (37). The mounting plate (35) is installed between the moving frame (31) and the loading frame (33). The transfer seat (41) is movably connected to the side of the mounting plate (35) away from the loading frame (33). The piercing rod (43) is installed through the mounting plate (35), and the end of the piercing rod (43) facing the moving frame (31) is connected to the transfer seat (41). The end of the piercing rod (43) facing the loading frame (33) is located in the loading space (37).
6. The fire fighting device of claim 5, wherein The mounting plate (35) has a through hole, and the piercing assembly (40) also includes a guide sleeve (47) installed on the mounting plate (35) through the through hole, and the piercing rod (43) is disposed through the guide sleeve (47).
7. The fire fighting device of claim 5, wherein The puncture assembly (40) further includes a rotary drive (44) mounted on the transfer seat (41), wherein the puncture rod (43) is rotatably connected to the transfer seat (41) and connected to the drive end of the rotary drive (44).
8. The fire fighting device of claim 5, wherein The number of the piercing rods (43) is multiple.
9. The fire fighting device of claim 8, wherein, The puncture assembly (40) also includes a rotary drive (44), a first transmission belt (46), and multiple pulleys (45); Each of the piercing rods (43) is rotatably connected to the transfer seat (41), and the rotary drive (44) is mounted on the transfer seat (41). The drive end of the rotary drive (44) is connected to any of the piercing rods (43). Each of the piercing rods (43) is equipped with a pulley (45), and the first transmission belt (46) is sleeved on each of the pulleys (45).
10. The fire extinguishing device of claim 1, wherein The fire-fighting device also includes a support frame (50), the loading assembly (30) is movably connected to the support frame (50), and the moving drive assembly (20) is mounted on the support frame (50) and connected to the loading assembly (30).