Fire extinguishing device for electric vehicle charging station

Abstract

The utility model relates to the technical field of intelligent charging stations, and discloses an electric vehicle charging station fire extinguishing device which comprises a charging station foundation and an installation frame fixedly installed on the charging station foundation, and an installation baffle is fixedly installed at the other end, away from the charging station foundation, of the installation frame. A water flowing groove is formed in the outer surface of the charging station foundation. According to the fire extinguishing device for the electric vehicle charging station, a driving gear of the first motor cooperates with inner convex teeth of the water cannon body, rapid and accurate horizontal angle adjustment is achieved, a temperature sensor can be integrated to accurately position a fire source, and the fire extinguishing opportunity is accurately grasped; a second motor is matched with a connecting column to assist pitching adjustment of a spray gun, smooth vertical movement, three-dimensional space flexible shooting and direct striking of flames at all positions are achieved in combination with a through groove, the four water cannon assemblies are arranged in a four-corner mode, smooth water conveying, tight sealing and pressure maintaining are achieved through a connecting sleeve and a connecting pipe, cross covering is achieved, no dead corner exists, fire behavior is surrounded in an all-dimensional mode, and complex fire behavior of a charging station is adapted. And field fire safety is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent charging station technical field, concretely is a kind of electric vehicle charging station fire extinguishing device. BACKGROUND

[0002] With the continuous enhancement of global environmental protection consciousness and the promotion of energy structure transformation, the electric vehicle market presents the rapid expansion trend, more and more electric vehicles are put into use, and the electric vehicle charging station is densely distributed in city everywhere, highway along area etc. Region, these charging stations are parked with considerable quantity and battery energy intensive electric vehicles, once fire occurs, its burning speed is fast, and fire spreads rapidly, far more than the harm degree of traditional fuel automobile fire, lithium ion battery thermal runaway is the common cause of electric vehicle fire, under the thermal runaway state, the chemical reaction in battery is violent, releases a large amount of combustible gas and heat, can form a raging fire in a short time, and poses a serious threat to surrounding vehicles, charging facilities and personnel safety.

[0003] Chinese utility model patent publication number: CN 221332553 U, discloses: a kind of electric vehicle charging station fire extinguishing system, after detecting fire, can first time from below to above injection carbon dioxide gas, gasified carbon dioxide gas not only can quickly cool around electric vehicle, simultaneously can also isolate oxygen, to inhibit fire, fire ball sprays dry powder from above to below, to cover spark, quickly play the role of fire extinguishing, and not with battery reaction, quickly extinguish fire while safer, but the electric vehicle charging station fire extinguishing system of this, although it can play the role of quick fire extinguishing, but overall fire extinguishing system flexibility angle, it is not convenient to extinguish fire to the angle of fire source, it is easy to cause greater damage, and water pipe limiting structure is not designed, it is easy to cause water pipe displacement, to affect normal use. SUMMARY

[0004] The utility model solves the technical problem that it provides a kind of electric vehicle charging station fire extinguishing device, it can effectively solve the overall fire extinguishing system flexibility angle in prior art, it is not convenient to extinguish fire to the angle of fire source, it is easy to cause greater damage, and water pipe limiting structure is not designed, it is easy to cause water pipe displacement, to affect normal use problem.

[0005] The utility model adopts the technical scheme: a kind of electric vehicle charging station fire extinguishing device, including charging station foundation and the installation frame fixedly installed on the charging station foundation, the other end of the installation frame away from charging station foundation is fixedly installed with installation baffle, the outer surface of the charging station foundation is provided with water channel, the outer surface of the water channel is provided with water permeable board, the outer surface of the installation frame is provided with inlet pipe, the outer surface of the installation frame is fixedly installed with section bar frame, the outer surface of the section bar frame is provided with secondary outlet pipe, the outer surface of the secondary outlet pipe is provided with electromagnetic valve, the outer surface of the secondary outlet pipe is provided with limit component, the outer surface of the installation baffle is fixedly installed with mounting bracket one, the other end of the secondary outlet pipe is fixedly installed with connecting pipe, the outer surface of the mounting bracket one is fixedly installed with fixed plate, the other end of the connecting pipe away from the secondary outlet pipe is provided with water cannon assembly.

[0006] Preferably, the limit component includes a limit block and a connecting block, the outer surface of the limit block is fixedly installed with a positioning block, and the positioning block is matched with the section bar frame.

[0007] Through the above technical scheme, the matching design of the positioning block and the section bar frame simplifies the installation process of the limit component, without complex measurement and calibration, the installation position can be quickly found, the installation time is effectively saved, the overall assembly efficiency is improved, and the positioning block and the section bar frame are tightly embedded, which can prevent the displacement of the limit block, ensure that the secondary outlet pipe is always in a stable state, and ensure the reliable operation of the fire extinguishing system.

[0008] Preferably, the outer surface of the limit block is provided with a limit groove, the inner surface of the limit groove is fixedly installed with a shock-absorbing pad, and the shock-absorbing pad is matched with the secondary outlet pipe.

[0009] Through the above technical scheme, the limit groove can limit the position of the secondary outlet pipe, avoid shaking and deviation during operation, ensure stable water flow delivery, and the shock-absorbing pad plays a key buffering role, on the one hand, absorbs the vibration of the secondary outlet pipe caused by water flow start-stop and pressure change, reduces the risk of pipeline fatigue damage, and prolongs the service life.

[0010] Preferably, the outer surface of the connecting block is provided with a threaded hole, the outer surface of the connecting block is provided with a fixed block, the inner surface of the threaded hole is threadedly connected with a positioning bolt one, the inner surface of the limit block is threadedly connected with a positioning bolt two, the positioning bolt one penetrates through the threaded hole and extends to the outer surface of the limit block, and the positioning bolt two penetrates through the limit block and extends to the outer surface thereof.

[0011] Through the technical scheme, the positioning bolt one strengthens the transverse connection strength between the connecting block and the limiting block, and the positioning bolt two stabilizes the structure of the limiting block from another dimension, so that the limiting assembly can be stable and firm under the double protection, and firmly fix the auxiliary water outlet pipe, so as to ensure the continuous and stable delivery of fire extinguishing water.

[0012] Preferably, the water cannon assembly comprises a first connecting seat and a spray gun, a motor one is fixedly installed on the outer surface of the first connecting seat, a gear is fixedly installed on the output shaft of the motor one, a second connecting seat is rotatably installed on the outer surface of the first connecting seat, a water cannon body is fixedly installed on the other end of the second connecting seat away from the first connecting seat, and the inner surface of the water cannon body is provided with a convex tooth which is matched with the gear.

[0013] Through the matching of the convex tooth and the gear, the angle of the water cannon body can be adjusted, compared with the traditional manual or simple mechanical adjustment mode, the fire source can be quickly aligned, no opportunity for fire fighting is missed, the adjustment process is stable and accurate, the sprayed water flow can effectively cover the target area, the fire extinguishing efficiency and effect are improved, and a temperature sensor can be additionally installed to realize rapid positioning and fire extinguishing.

[0014] Preferably, a through groove is formed in the outer surface of the water cannon body, a second mounting bracket is fixedly installed on the inner surface of the water cannon body, a motor two is fixedly installed on the outer surface of the second mounting bracket, a connecting column is fixedly installed on the output shaft of the motor two, and the other end of the spray gun extends to the outer surface of the through groove.

[0015] Through the above technical scheme, the motor two and the connecting column cooperate to give the spray gun flexible pitch adjustment capability, combined with the previous horizontal angle adjustment, the water cannon assembly can accurately attack any position of the fire source in the three-dimensional space, and the through groove provides a reasonable space range for the movement of the spray gun, ensuring smooth vertical adjustment without obstruction, so that the sprayed water flow can directly hit the nearby ground fire and also can rise to cover the high burning position, and the water cannon assembly can comprehensively and without dead angle deal with the complex fire scene of the electric vehicle charging station, and the applicability and effectiveness of the fire extinguishing system are enhanced.

[0016] Preferably, a connecting sleeve is arranged on the outer surface of the spray gun, the connecting sleeve is communicated with the connecting pipe, and the water cannon assembly is provided with four same connecting sleeves which are respectively located at the four corners of the mounting baffle.

[0017] Through the above technical scheme, the connecting sleeve is communicated with the connecting pipe, a simple and efficient water flow conveying channel is constructed, and the sealing connection ensures that the water flow pressure is stable and not leaked, so that the strong spraying power is maintained, and the water cannon assembly arranged at the four corners fully utilizes the space of the charging station site to form cross fire coverage from different directions, so that the fire extinguishing dead angle is eliminated, and no matter where the fire source starts in the charging station, it can be quickly suppressed by multi-directional water flow, the spread of the fire is efficiently controlled, and the overall fire safety of the charging station is ensured.

[0018] Compared with the prior art, this utility model provides a fire extinguishing device for electric vehicle charging stations, which has the following beneficial effects:

[0019] 1. This fire extinguishing device for electric vehicle charging stations features a positioning block that is compatible with the profile frame, making installation convenient and efficient, saving assembly time. It can anchor the limiting block under normal and complex working conditions, stabilizing the secondary water outlet pipe. The limiting groove standardizes the pipe position to prevent shaking. Combined with shock-absorbing pads, it buffers the impact of water flow and vibration caused by pressure changes, reducing pipe fatigue wear and extending its service life. The connecting block is reinforced with the limiting block by positioning bolt one and positioning bolt two. Even in the event of high temperature and impact during a fire, it can protect the secondary water outlet pipe and ensure a stable and uninterrupted supply of fire extinguishing water.

[0020] 2. This fire extinguishing device for electric vehicle charging stations features a motor-driven gear that works in conjunction with the internal teeth of the water cannon to achieve rapid and precise horizontal angle adjustment. It can also integrate a temperature sensor to accurately locate the fire source and seize the opportunity to extinguish the fire. The second motor, in conjunction with the connecting column, assists in the pitch adjustment of the spray gun. Combined with the through-slot, it achieves smooth vertical movement and flexible three-dimensional scanning to directly hit all flames. The four water cannon components are arranged in a four-corner layout, with smooth water delivery through the connecting sleeve and connecting pipe. The system is tightly sealed and maintains pressure, providing cross-coverage without blind spots, and comprehensively containing the fire. It is suitable for complex fire situations at charging stations and protects the fire safety of the site. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of the charging station foundation and permeable slab of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the inlet pipe and main outlet pipe of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the profile frame and auxiliary water outlet pipe of this utility model;

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the limiting component of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the water cannon assembly of this utility model;

[0027] Figure 7 This is a schematic diagram of the disassembled structure of the water cannon assembly of this utility model.

[0028] The components include: 1. Charging station foundation; 2. Installation frame; 3. Installation baffle; 4. Water channel; 5. Permeable plate; 6. Inlet pipe; 7. Profile frame; 8. Secondary outlet pipe; 9. Solenoid valve; 10. Limiting assembly; 1001. Limiting block; 1002. Positioning block; 1003. Limiting groove; 1004. Shock-absorbing pad; 1005. Connecting block; 1006. Threaded hole; 1007. Fixing block; 1008. Positioning bolt one; 100 9. Positioning bolt 2; 11. Mounting bracket 1; 12. Connecting pipe; 13. Fixing plate; 14. Water cannon assembly; 1401. First connecting seat; 1402. Motor 1; 1403. Gear; 1404. Second connecting seat; 1405. Water cannon body; 1406. Protruding tooth; 1407. Through groove; 1408. Mounting bracket 2; 1409. Motor 2; 1410. Connecting column; 1411. Spray gun; 1412. Connecting sleeve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: As Figures 1-7 As shown, the present invention provides a fire extinguishing device for an electric vehicle charging station, including a charging station foundation 1 and an installation frame 2 fixedly installed on the charging station foundation 1. An installation baffle 3 is fixedly installed at the other end of the installation frame 2 away from the charging station foundation 1. A water channel 4 is provided on the outer surface of the charging station foundation 1, and a water permeable plate 5 is provided on the outer surface of the water channel 4. A water inlet pipe 6 is provided on the outer surface of the installation frame 2. A profile frame 7 is fixedly installed on the outer surface of the installation frame 2. A secondary water outlet pipe 8 is provided on the outer surface of the profile frame 7. A solenoid valve 9 is provided on the outer surface of the secondary water outlet pipe 8. A limit component 10 is provided on the outer surface of the secondary water outlet pipe 8. An installation bracket 11 is fixedly installed on the outer surface of the installation baffle 3. A connecting pipe 12 is fixedly installed at the other end of the secondary water outlet pipe 8. A fixing plate 13 is fixedly installed on the outer surface of the installation bracket 11. A water cannon component 14 is provided at the other end of the connecting pipe 12 away from the secondary water outlet pipe 8.

[0031] Specifically, the limiting assembly 10 includes a limiting block 1001 and a connecting block 1005, and the outer surface of the limiting block 1001 is fixedly installed with a positioning block 1002, which is matched with the profiled rack 7. The matching design of the positioning block 1002 and the profiled rack 7 simplifies the installation process of the limiting assembly 10, and the installation position can be quickly found without complex measurement and calibration, thereby effectively saving installation time and improving overall assembly efficiency. In addition, the positioning block 1002 is tightly embedded with the profiled rack 7, which can prevent the limiting block 1001 from shifting and ensure that the auxiliary water outlet pipe 8 is always in a stable state, thereby ensuring reliable operation of the fire extinguishing system.

[0032] Specifically, the outer surface of the limiting block 1001 is provided with a limiting groove 1003, and the inner surface of the limiting groove 1003 is fixedly installed with a shock pad 1004, which is matched with the auxiliary water outlet pipe 8. The limiting groove 1003 can limit the position of the auxiliary water outlet pipe 8, avoid shaking and deviation during operation, ensure stable water flow delivery, and the shock pad 1004 plays a key buffering role, which can absorb the vibration of the auxiliary water outlet pipe 8 caused by water flow start-stop and pressure change, reduce the risk of pipeline fatigue damage, and prolong the service life.

[0033] Specifically, the outer surface of the connecting block 1005 is provided with a threaded hole 1006, and the outer surface of the connecting block 1005 is provided with a fixed block 1007. The inner surface of the threaded hole 1006 is threadedly connected with a positioning bolt one 1008, and the inner surface of the limiting block 1001 is threadedly connected with a positioning bolt two 1009. The positioning bolt one 1008 penetrates through the threaded hole 1006 and extends to the outer surface of the limiting block 1001, and the positioning bolt two 1009 penetrates through the limiting block 1001 and extends to the outer surface thereof. The positioning bolt one 1008 strengthens the transverse connection strength between the connecting block 1005 and the limiting block 1001, and the positioning bolt two 1009 stabilizes the structure of the limiting block 1001 from another dimension. Under the double protection, even if the limiting assembly 10 faces complex working conditions such as high temperature and impact force in the fire scene, it can still be stable and firmly fix the auxiliary water outlet pipe 8, thereby ensuring continuous and stable delivery of fire water.

[0034] Embodiment two: as shown in the following table, which is an improvement on the previous embodiment. Figures 2-7

[0035] ​Specifically, the water cannon assembly 14 comprises a first connecting seat 1401 and a spray gun 1411, the outer surface of the first connecting seat 1401 is fixedly installed with a motor one 1402, the output shaft of the motor one 1402 is fixedly installed with a gear 1403, the outer surface of the first connecting seat 1401 is rotatably installed with a second connecting seat 1404, the other end of the second connecting seat 1404 away from the first connecting seat 1401 is fixedly installed with a water cannon body 1405, the inner surface of the water cannon body 1405 is provided with a convex tooth 1406, the convex tooth 1406 is matched with the gear 1403, and the advantage is that the angle adjustment of the water cannon body 1405 can be realized through the cooperation of the convex tooth 1406 and the gear 1403, compared with the traditional manual or simple mechanical adjustment mode, the fire source can be quickly aligned, no opportunity for extinguishing is missed, the adjustment process is stable and accurate, the effective coverage of the target area by the sprayed water flow is ensured, the extinguishing efficiency and effect are improved, and a temperature sensor can be additionally installed to realize rapid positioning and extinguishing.

[0036] Specifically, the outer surface of the water cannon body 1405 is provided with a through groove 1407, the inner surface of the water cannon body 1405 is fixedly installed with a mounting bracket two 1408, the outer surface of the mounting bracket two 1408 is fixedly installed with a motor two 1409, the output shaft of the motor two 1409 is fixedly installed with a connecting column 1410, the other end of the spray gun 1411 extends to the outer surface of the through groove 1407, and the advantage is that the motor two 1409 cooperates with the connecting column 1410 to endow the spray gun 1411 with flexible pitching adjustment capability, combined with the previous horizontal angle adjustment, the accurate attack of the water cannon assembly 14 on the fire source at any position in the three-dimensional space is realized, the through groove 1407 provides a reasonable space range for the movement of the spray gun 1411, ensures smooth and unobstructed vertical adjustment, makes the sprayed water flow not only directly hit the nearby ground flame, but also upwardly cover the high burning position, and the complex fire scene of the electric vehicle charging station is dealt with in all directions and without dead angle, and the applicability and effectiveness of the fire extinguishing system are enhanced.

[0037] Specifically, the outer surface of the spray gun 1411 is provided with a connecting sleeve 1412, the connecting sleeve 1412 is communicated with the connecting pipe 12, the water cannon assembly 14 is provided with the same four and is located at the four corners of the mounting baffle 3 respectively, and the advantage is that the connecting sleeve 1412 is communicated with the connecting pipe 12, a simple and efficient water flow conveying channel is constructed, the sealing connection ensures that the water flow pressure is stable and not leaked, the strong spraying power is maintained, the water cannon assembly 14 arranged at the four corners fully utilizes the space of the charging station site, forms cross fire coverage from different directions, eliminates the dead angle of fire extinguishing, and no matter where the fire source starts in the charging station corner, it can be quickly suppressed by multidirectional water flow, the spread of the fire is efficiently curbed, and the overall fire safety of the charging station is ensured.

[0038] Working principle: in use, the positioning block 1002 of the limiting assembly 10 is precisely matched with the structure design of the profile rack 7, the operator only needs to gently embed the positioning block 1002 along the corresponding position of the profile rack 7, without complicated measurement and calibration, the installation position of the limiting block 1001 can be quickly found, the preliminary fixation is completed, a lot of assembly time is saved, and the close embedding effectively prevents the accidental displacement of the limiting block 1001. When extinguishing the fire, the water flow flows at high speed in the auxiliary water outlet pipe 8, and the auxiliary water outlet pipe 8 is prone to vibration and deviation due to the influence of water flow start-stop and pressure fluctuation. At this time, the limiting groove 1003 tightly clamps the auxiliary water outlet pipe 8, radially limits the shaking of the auxiliary water outlet pipe 8, and guarantees the stable delivery of the water flow along the predetermined path. The shock-absorbing pad 1004 plays a buffering effect, absorbs the vibration energy caused by the water flow impact, reduces the risk of pipeline fatigue damage, prolongs the service life of the auxiliary water outlet pipe 8, and the positioning bolt one 1008 and the positioning bolt two 1009 play a key role in structural reinforcement. The positioning bolt one 1008 penetrates the connecting block 1005 and the limiting block 1001, enhancing the transverse connection strength of the two, and the positioning bolt two 1009 reinforces the overall integrity of the limiting block 1001. Even if it encounters harsh working conditions such as high-temperature baking and explosion impact in the fire scene, the limiting assembly 10 can still firmly lock the auxiliary water outlet pipe 8, ensuring that the water for extinguishing the fire is continuously and stably delivered to each water cannon assembly 14. The fire control system drives the motor one 1402 to operate according to the fire location information, the motor one 1402 drives the gear 1403 to rotate, and the gear 1403 is meshed with the convex teeth 1406 on the inner surface of the water cannon body 1405 to drive the water cannon body 1405 to rotate around the second connecting seat 1404, achieving fast, stable and accurate angle adjustment in the horizontal direction, quickly aiming at the water square position of the fire source, not missing the opportunity to put out the fire. If a temperature sensor is added, it can more accurately lock the area with the strongest heat radiation of the fire source, efficiently guide the water flow spraying direction. After receiving the control command, the motor two 1409 starts to drive the connecting column 1410 to rotate, which pushes the connected spray gun 1411 to move up and down within the space range limited by the through slot 1407, realizing vertical direction angle adjustment. It can not only make the spray gun 1411 probe the water flow to directly hit the nearby ground fire, but also can cover the high-burning parts, which cooperates with the horizontal angle adjustment to achieve accurate attack on the fire source at any position in the three-dimensional space. The high-pressure water flow from the connecting pipe 12 is stably delivered to the spray gun 1411 through the connecting sleeve 1412, and is sprayed out in the form of a strong column or mist under the accurate positioning of the water cannon assembly 14, covering the target fire source. The four water cannon assemblies 14 distributed at the four corners of the installation baffle 3 make full use of the space layout advantage of the charging station to spray water from different directions at the same time, forming an intersecting fire power coverage network, fully suppressing the fire, efficiently preventing the fire from spreading inside the charging station, and ensuring the fire safety of electric vehicles, charging facilities and personnel in the station.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire extinguishing device for an electric vehicle charging station, comprising a charging station foundation (1) and an installation frame (2) fixedly installed on the charging station foundation (1), characterized in that: An installation baffle (3) is fixedly installed at the other end of the installation frame (2) away from the charging station foundation (1). A water channel (4) is opened on the outer surface of the charging station foundation (1). A water permeable plate (5) is provided on the outer surface of the water channel (4). A water inlet pipe (6) is provided on the outer surface of the installation frame (2). A profile frame (7) is fixedly installed on the outer surface of the installation frame (2). A secondary water outlet pipe (8) is provided on the outer surface of the profile frame (7). A solenoid valve (9) is provided on the outer surface of the secondary water outlet pipe (8). A limit component (10) is provided on the outer surface of the secondary water outlet pipe (8). An installation bracket (11) is fixedly installed on the outer surface of the installation baffle (3). A connecting pipe (12) is fixedly installed at the other end of the secondary water outlet pipe (8). A fixing plate (13) is fixedly installed on the outer surface of the installation bracket (11). A water cannon component (14) is provided at the other end of the connecting pipe (12) away from the secondary water outlet pipe (8).

2. The fire extinguishing device for an electric vehicle charging station according to claim 1, characterized in that: The limiting component (10) includes a limiting block (1001) and a connecting block (1005). A positioning block (1002) is fixedly installed on the outer surface of the limiting block (1001). The positioning block (1002) is adapted to the profile frame (7).

3. A fire extinguishing device for an electric vehicle charging station according to claim 2, characterized in that: The outer surface of the limiting block (1001) has a limiting groove (1003), and a shock-absorbing pad (1004) is fixedly installed on the inner surface of the limiting groove (1003). The shock-absorbing pad (1004) is adapted to the auxiliary water outlet pipe (8).

4. A fire extinguishing device for an electric vehicle charging station according to claim 3, characterized in that: The outer surface of the connecting block (1005) is provided with a threaded hole (1006), and a fixing block (1007) is provided on the outer surface of the connecting block (1005). A positioning bolt (1008) is threadedly connected to the inner surface of the threaded hole (1006), and a positioning bolt (1009) is threadedly connected to the inner surface of the limiting block (1001). The positioning bolt (1008) passes through the threaded hole (1006) and extends to the outer surface of the limiting block (1001), and the positioning bolt (1009) passes through the limiting block (1001) and extends to its outer surface.

5. A fire extinguishing device for an electric vehicle charging station according to claim 1, characterized in that: The water cannon assembly (14) includes a first connecting seat (1401) and a spray gun (1411). A motor (1402) is fixedly mounted on the outer surface of the first connecting seat (1401). A gear (1403) is fixedly mounted on the output shaft of the motor (1402). A second connecting seat (1404) is rotatably mounted on the outer surface of the first connecting seat (1401). A water cannon body (1405) is fixedly mounted on the other end of the second connecting seat (1404) away from the first connecting seat (1401). A tooth (1406) is provided on the inner surface of the water cannon body (1405). The tooth (1406) is adapted to the gear (1403).

6. A fire extinguishing device for an electric vehicle charging station according to claim 5, characterized in that: The water cannon body (1405) has a through groove (1407) on its outer surface. A mounting bracket (1408) is fixedly installed on the inner surface of the water cannon body (1405). A motor (1409) is fixedly installed on the outer surface of the mounting bracket (1408). A connecting column (1410) is fixedly installed on the output shaft of the motor (1409). The other end of the spray gun (1411) extends to the outer surface of the through groove (1407).

7. A fire extinguishing device for an electric vehicle charging station according to claim 6, characterized in that: The outer surface of the spray gun (1411) is provided with a connecting sleeve (1412), which is connected to the connecting pipe (12). The water cannon assembly (14) has four identical components, which are located at the four corners of the mounting baffle (3).

Images