Fire extinguishing device for new energy automobile chassis

Abstract

The invention relates to the technical field of fire-fighting equipment, in particular to a fire extinguishing device for a new energy automobile chassis, the fire extinguishing device comprises a plurality of main pipelines, branch pipelines are arranged on the two sides of the main pipelines, auxiliary pipelines are connected to the ends of the branch pipelines, and water spraying assemblies are arranged on the main pipelines, the branch pipelines and the auxiliary pipelines; the main pipeline, the branch pipeline and the auxiliary pipeline are communicated, the main pipeline, the branch pipeline and the auxiliary pipeline form a flow channel network, and one of the main pipelines is connected with a water inlet pipe head towards the outside of the flow channel network. The method has the effect of improving the fire extinguishing efficiency of the new energy automobile chassis.

Description

Technical Field

[0001] This application relates to the field of fire-fighting equipment technology, and in particular to a fire extinguishing device for a new energy vehicle chassis. Background Technology

[0002] In recent years, new energy vehicles have developed rapidly, gradually gaining market share due to their advantages such as environmental protection and energy conservation. However, the safety of new energy vehicles has attracted much attention, especially the potential for chassis fires. As the concentrated area of ​​core components in new energy vehicles, the chassis houses battery packs, motors, and other components. Once a fire starts, it can spread rapidly, posing a threat to the lives and property of passengers. Rapid and effective firefighting and cooling measures are necessary to prevent the fire from escalating.

[0003] Currently, the common method for extinguishing fires in such localized spaces is to use handheld fire extinguishers or fire hoses to spray from the side or bottom of the vehicle. However, these methods have significant shortcomings: First, due to the narrow and complex layout of the chassis, external spraying cannot ensure that the extinguishing agent can fully cover all fire points, especially inside the battery pack or in the interlayer, which can easily leave blind spots. Second, relying on manual hand-held operation, the coverage and uniformity of the extinguishing agent spray cannot be guaranteed, resulting in low response speed and fire extinguishing efficiency.

[0004] Therefore, there is a need for fire suppression systems that can quickly, comprehensively, and evenly cover the chassis structure of new energy vehicles, in order to solve the technical problems of incomplete coverage, slow response, and low efficiency of existing fire suppression methods. Summary of the Invention

[0005] In order to improve the fire extinguishing efficiency of new energy vehicle chassis, this application provides a fire extinguishing device for new energy vehicle chassis.

[0006] This application provides a fire extinguishing device for the chassis of a new energy vehicle, which adopts the following technical solution: A fire extinguishing device for a new energy vehicle chassis includes several main pipes, branch pipes on both sides of the main pipes, and auxiliary pipes connected to the ends of the branch pipes. Water spray components are installed on the main pipes, branch pipes, and auxiliary pipes. The main pipes, branch pipes, and auxiliary pipes are connected to each other and form a flow channel network. One of the main pipes is connected to a water inlet head in the direction of the flow channel network.

[0007] By adopting the above technical solution, when fire needs to be extinguished on the chassis of a new energy vehicle, water can be supplied to the entire network through a single water inlet pipe. The main pipe, branch pipes, and auxiliary pipes form a flow channel network framework and are pushed under the vehicle chassis. The connection between the main pipe, branch pipes, and auxiliary pipes can ensure a certain water pressure within the flow channel network. Then, water is sprayed onto the chassis of the new energy vehicle through the water spray components. The evenly distributed water spray components achieve large-area, no-dead-angle fire extinguishing coverage of the chassis of the new energy vehicle, thereby cooling and extinguishing the fire at the ignition point, thus improving the fire extinguishing efficiency.

[0008] Optionally, the branch pipes are symmetrically distributed on both sides of the main pipe, and a diversion assembly is connected between adjacent main pipes. The branch pipes located between adjacent main pipes are respectively connected to the diversion assembly, and the diversion direction angle of the diversion assembly is not equal to 90°.

[0009] By adopting the above technical solution, since the diversion direction angle of the diversion component is not equal to 90°, the water can flow into the branch pipes on both sides more quickly, which can speed up the speed of the water flow to each spray component position in the flow channel network and improve the fire extinguishing efficiency.

[0010] Optionally, the diversion assembly includes a main flow pipe and a side flow pipe. The side flow pipes are symmetrically arranged on both sides of the main flow pipe. The end of the main pipe is connected to the main flow pipe, and the end of the branch pipe is connected to the side flow pipe. One end of the main flow pipe is a first port, and the other end is a second port. The main flow pipe and the side flow pipe are connected. The angle between the extension direction of the main flow pipe and the extension direction of the side flow pipe is not equal to 90°.

[0011] By adopting the above technical solution, the problem of only a small amount of water being diverted when there is a 90° right angle turn can be reduced, and the water can quickly reach each water spray component along the positive transmission direction of the water inlet, thereby improving the fire extinguishing efficiency.

[0012] Optionally, the extension directions of the first port and the second port are parallel to the extension direction of the main pipe, the middle part of the main flow pipe is inclined, and the side flow pipe is disposed on the side wall of the first port.

[0013] By adopting the above technical solution, since the middle of the main flow pipe is inclined and the side flow pipe is set on the side wall of the first port, the water flow is easy to generate a momentum component towards the side flow pipe when it flows through the inner wall of the inclined section by utilizing the continuous change of the pipe direction. The structure actively guides and promotes the diversion, further optimizes the diversion effect, and improves the water output efficiency.

[0014] Optionally, the main flow pipes at both ends of the same main pipe are inclined upward and downward, respectively. The main pipe extends horizontally, and the end of the side flow pipe away from the main flow pipe is bent. The bending part of the side flow pipe extends perpendicularly to the extension direction of the main flow pipe.

[0015] By adopting the above technical solution, the main flow pipes at both ends of the same main pipe have opposite inclination directions, so that the water flow can impact the inner wall when it flows through different diversion component nodes. This helps to break the inertial concentration tendency of the water flow and promotes the generation of momentum components in each diversion component node towards the side flow pipe, thereby promoting diversion and improving water output efficiency.

[0016] Optionally, the side flow pipe is rotatably connected to the main flow pipe, and the main flow pipe is provided with a locking component for fixing the side flow pipe.

[0017] By adopting the above technical solution, the diversion component can be used at each diversion node. The direction of use can be changed simply by rotating the side flow pipe, which allows the diversion component to be produced uniformly and reduces manufacturing costs.

[0018] Optionally, an inner through block is rotatably connected inside the main flow pipe, the inner through block is connected to the side flow pipe, and the inner through block has a through hole penetrating the interior of the side flow pipe. The locking assembly includes an upper locking shell and a lower locking shell. Anti-rotation plates are provided on both sides of the side flow pipe. The upper and lower locking shells clamp the side flow pipe and the anti-rotation plates. A sealing element is provided at the connection between the main flow pipe and the side flow pipe. Threaded assemblies for fixing are provided on the upper and lower locking shells.

[0019] By adopting the above technical solution, when it is necessary to change the direction of the side flow pipe, disassemble the threaded assembly, the upper lock housing and the lower lock housing, rotate the side flow pipe 180°, and then install and lock the upper lock housing and the lower lock housing to complete the adjustment.

[0020] Optionally, the inner passage block has a guide arc edge on the side away from the side flow pipe.

[0021] By adopting the above technical solution, the water flow into the main flow pipe can be smoothly guided, and a portion of the water flow can be guided into the through hole of the side flow pipe to promote diversion and improve water output efficiency.

[0022] Optionally, the water spray assembly includes several mounting bases and spray heads, with the mounting bases distributed on the main pipe, branch pipes, and auxiliary pipes, and the spray heads connected to the mounting bases.

[0023] By adopting the above technical solution, it is ensured that the water flow can be sprayed evenly from all positions of the flow channel network, achieving full coverage of the car chassis and eliminating blind spots in water spraying as much as possible.

[0024] Optionally, the main pipe, branch pipe and auxiliary pipe are detachably equipped with sliding wheels.

[0025] By adopting the above technical solution, the entire fire extinguishing device can be easily moved, making it convenient to quickly and accurately push the device under the vehicle chassis for fire extinguishing operations, thus improving convenience.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. When it is necessary to extinguish a fire on the chassis of a new energy vehicle, water can be supplied to the entire network through a single water inlet pipe. The main pipe, branch pipes and auxiliary pipes form a flow channel network framework and are pushed under the chassis of the vehicle. The connection between the main pipe, branch pipes and auxiliary pipes can make the flow channel network have a certain water pressure. Then, water is sprayed on the chassis of the new energy vehicle through the water spray components. The evenly distributed water spray components can achieve a large-area fire extinguishing coverage of the chassis of the new energy vehicle without dead corners, thereby cooling and extinguishing the fire point and improving the fire extinguishing efficiency. 2. Since the diversion direction angle of the diversion component is not equal to 90°, the water can flow into the branch pipes on both sides more quickly, which can speed up the water flow to the various spray components in the flow channel network and improve the fire extinguishing efficiency. 3. Since the middle of the main flow pipe is inclined and the side flow pipe is set on the side wall of the first port, the continuous change of the pipe direction makes it easy for the water flow to generate a momentum component in the direction of the side flow pipe when it flows through the inner wall of the inclined section. Structurally, this actively guides and promotes the diversion, further optimizes the diversion effect, and improves the water output efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application.

[0028] Figure 2 This is a schematic diagram of the internal structure of the splitter component in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the upper and lower locking shells in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures: 1. Main pipe; 2. Branch pipe; 3. Secondary pipe; 4. Inlet pipe head; 51. Main flow connector; 511. First port; 512. Second port; 52. Side flow connector; 521. Anti-rotation plate; 522. Seal; 53. Inner through block; 54. Guide arc edge; 61. Upper lock housing; 62. Lower lock housing; 63. Anti-rotation groove; 71. Bolt; 72. Nut; 81. Mounting base; 82. Spray head; 9. Sliding wheel. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a fire extinguishing device for the chassis of a new energy vehicle.

[0033] Reference Figure 1 A fire extinguishing device for a new energy vehicle chassis includes several main pipes 1, all extending in the same direction. Branch pipes 2 are provided on both sides of the main pipes 1. The end of the branch pipe 2 furthest from the main pipe 1 is connected to a secondary pipe 3. The branch pipe 2 and the secondary pipe 3 are connected by a T-joint or a 90° bend joint. The main pipes 1, branch pipes 2 and secondary pipes 3 are all straight pipes. Water spray components are provided on the main pipes 1, branch pipes 2 and secondary pipes 3. The main pipes 1, branch pipes 2 and secondary pipes 3 are connected. The extension direction of the main pipes 1 is parallel to the extension direction of the secondary pipes 3. The main pipes 1, branch pipes 2 and secondary pipes 3 form a network of multiple rectangular frame-like flow channels that are spliced ​​together. One of the main pipes 1 is connected to a water inlet head 4 in the direction of the flow channel network. The end of the main pipe 1 furthest from the water inlet head 4 is connected to the branch pipe 2 through a T-joint.

[0034] When it is necessary to extinguish a fire on the chassis of a new energy vehicle, a water pipe can be connected at the inlet pipe head 4 to connect to an external water source. The main pipe 1, branch pipe 2, and auxiliary pipe 3 form a flow channel network framework and are pushed under the vehicle chassis. Water flows through the flow channel network through the external water source. The connection between the main pipe 1, branch pipe 2, and auxiliary pipe 3 can provide a certain water pressure in the flow channel network. Then, water is sprayed onto the chassis of the new energy vehicle through the water spray assembly to cool down the fire point and achieve efficient fire extinguishing.

[0035] Reference Figure 1 and Figure 2 Branch pipes 2 are symmetrically distributed on both sides of main pipe 1. Adjacent main pipes 1 are connected by flow-diverting components. The branch pipes 2 located between adjacent main pipes 1 are respectively connected to the flow-diverting components. The flow-diverting direction angle of the flow-diverting components is not equal to 90°. The extension directions of main pipe 1 and branch pipe 2 are perpendicular to each other.

[0036] After water flows into the main pipe 1 through the inlet pipe head 4, it is divided into the branch pipes 2 on both sides by the diversion component. When the diversion direction angle of the diversion component is 90°, the water is not easily diverted into the branch pipes 2 on both sides after passing through the diversion component. Most of the water will first flow between the main pipe 1 in sections, and then be diverted into the two branch pipes 2 on both sides at the T-joint of the end main pipe 1, and then flow through the flow channel network. When the diversion direction angle of the diversion component is not equal to 90°, the water can flow into the branch pipes 2 on both sides more quickly when passing through the diversion component. Combined with the water diverted at the T-joint of the end main pipe 1, the speed of the water flow to various positions of the flow channel network can be accelerated, thereby shortening the time for the water spraying component to spray water, which is convenient for efficient fire extinguishing.

[0037] The diversion assembly includes a main flow pipe 51 and two side flow pipes 52. The side flow pipes 52 are symmetrically arranged on both sides of the main flow pipe 51. The end of the main pipe 1 is connected to the main flow pipe 51, and the end of the branch pipe 2 is connected to the side flow pipe 52. One end of the main flow pipe 51 is a first port 511, and the other end is a second port 512. Adjacent main flow pipes 51 are connected to the first port 511 and the second port 512 of the main flow pipe 51, respectively. The main flow pipe 51 and the side flow pipe 52 are connected. The angle between the extension direction of the main flow pipe 51 and the extension direction of the side flow pipe 52 is not equal to 90°.

[0038] Because the angle between the extension directions of the main flow pipe 51 and the side flow pipe 52 is not equal to 90°, the water flow can enter the side flow pipe 52 from both sides when passing through the main flow pipe 51, avoiding the problem that only a small amount of water can be diverted due to the 90° right angle turn. This allows the water to reach each water spray component as quickly as possible during forward transmission, shortening the time it takes for the water to reach each water spray component, thereby accelerating the response speed of the water spray component and improving the flow distribution efficiency of the water in the entire flow channel network. This enables the sprayed water to quickly cover all areas of the new energy vehicle chassis, achieving rapid cooling and efficient fire extinguishing.

[0039] The extension directions of the first port 511 and the second port 512 are parallel to the extension direction of the main pipe 1. The main body of the main flow pipe 51 is located between the first port 511 and the second port 512. The middle part of the main flow pipe 51 is inclined. The side flow pipe 52 is located on the side wall of the first port 511. The side flow pipe 52 is close to the connection between the first port 511 and the inclined part of the main flow pipe 51.

[0040] After the water flows into the main flow pipe 51, when it flows from the first port 511 to the inclined part of the main flow pipe 51, the inclined part of the main flow pipe 51 can increase the resistance of the water flow. When the water flow hits the inner wall of the inclined part of the main flow pipe 51, it can cause the water to be diverted to the side flow pipes 52 on both sides, subtly changing the pressure distribution of the subsequent flow channel, forcing more subsequent water flow to be distributed to the side flow pipes 52 on both sides at the diversion node. Under the pressure of the continuously incoming water, the water flow will continue to flow into the main flow pipe 51 in the middle while being diverted, so that the water flow can continue to spread to the entire flow channel network after being divided into three, so that the water flow can quickly fill the flow channel network, thereby shortening the water output time of the spray component.

[0041] The inclined portions of the main flow pipes 51 connected to both ends of the same main pipe 1 are inclined upward and downward respectively. The main pipe 1 extends horizontally. The end of the side flow pipe 52 away from the main flow pipe 51 is bent. The extension direction of the bent portion of the side flow pipe 52 is perpendicular to the extension direction of the main flow pipe 51. When the previous main flow pipe 51 is inclined upward, the next adjacent main flow pipe 51 in the water inlet direction of the inlet pipe head 4 is inclined downward. When the previous main flow pipe 51 is inclined downward, the next adjacent main flow pipe 51 in the water inlet direction of the inlet pipe head 4 is inclined upward.

[0042] When one end of the same main pipe 1 is connected to the first port 511 of the main pipe 51, the other end is connected to the first port 511 of another main pipe 51; when one end of the same main pipe 1 is connected to the second port 512 of the main pipe 51, the other end is connected to the second port 512 of another main pipe 51.

[0043] Designing the main flow pipes 51 connected to both ends of the same main pipe 1 with an upward and downward inclination direction allows adjacent main flow pipes 51 along the water inlet direction to have an alternating upward and downward inclination layout. This ensures that adjacent main pipes 1 only alternate between two horizontal heights, avoiding a gradual increase in the height of the main pipe 1. At the same time, it ensures that when the water flows through each main flow pipe 51, the change in angle causes it to impact the inner wall of the main flow pipe 51, resulting in some resistance to the water flow. This leads to diversion to the side flow pipes 52 on both sides. Furthermore, when the water flows through the alternating inclination main flow pipes 51, the flow direction will experience slight flow disturbance and momentum redistribution due to the periodic change in the inclination angle. This reduces the possibility of the water flow becoming excessively concentrated on one side or a certain section of the flow network due to inertia. When the water flows through the alternating inclination main flow pipes 51 and enters the bent side flow pipes 52, the flow direction undergoes two changes. The continuous change in direction helps to bring the momentum component of the water flow, which helps to improve the uniformity of the water flow distribution.

[0044] The side flow pipe 52 is rotatably connected to the main flow pipe 51. The main flow pipe 51 is provided with a locking component for fixing the side flow pipe 52, so that the flow splitting component can be used at each flow splitting node. By rotating the side flow pipe 52, the flow splitting direction can be changed to meet the usage requirements of first splitting and then tilting upwards or first tilting downwards and then splitting. This allows the flow splitting component to be mass-produced uniformly, and the direction of the side flow pipe 52 can be adjusted at different flow splitting nodes.

[0045] Reference Figure 2 and Figure 3 An inner through block 53 is rotatably connected inside the main flow pipe 51. The outer wall of the inner through block 53 is fixedly connected to the inner wall of the side flow pipe 52. A through hole is provided at one end of the inner through block 53 near the main flow pipe 51, penetrating the interior of the side flow pipe 52. The locking assembly includes an upper locking shell 61 and a lower locking shell 62, which are positioned vertically and vertically at the connection between the main flow pipe 51 and the side flow pipe 52. The upper locking shell 61 and the lower locking shell 62 clamp the side flow pipe 52 and the anti-rotation plate 521. Anti-rotation plates 521 are provided on both sides of the side flow pipe 52. The extension direction of the side flow pipe 52 and the anti-rotation plate 521 are located in the same plane. The inner wall of 2 is provided with anti-rotation grooves 63 adapted to the anti-rotation plate 521, so that the extension direction of the side flow pipe 52 does not exceed two. The extension direction of the side flow pipe 52 and the extension direction of the first port 511 of the main flow pipe 51 are always on the same plane. A sealing element 522 is provided at the connection between the main flow pipe 51 and the side flow pipe 52. The sealing element 522 is a rubber pad or a rubber ring. The upper lock shell 61 and the lower lock shell 62 are provided with threaded assemblies for fixing. The threaded assemblies include bolts 71 and nuts 72. The threaded part of the bolt 71 passes through the upper lock shell 61 and the lower lock shell 62 and is threadedly connected to the nut 72, thereby locking the upper lock shell 61 and the lower lock shell 62.

[0046] When it is necessary to change the direction of the side flow pipe 52, remove the bolt 71, nut 72, upper lock housing 61 and lower lock housing 62, rotate the side flow pipe 52 180°, and then install the upper lock housing 61 and lower lock housing 62 so that the upper lock housing 61 and lower lock housing 62 clamp each other at the connection between the main flow pipe 51 and the side flow pipe 52. Then tighten the bolt 71 and nut 72 to complete the installation.

[0047] The inner block 53 has a guide arc edge 54 at one end near the main flow pipe 51. The cross-section of the guide arc edge 54 is triangular. The guide arc edge 54 is located inside the main flow pipe 51. When the water flows through the main flow pipe 51, the two sides of the water flow can be intercepted and guided into the through hole of the inner block 53 by the guide arc edge 54, and then enter the side flow pipe 52 through the through hole, thereby improving the diversion efficiency of the water flow.

[0048] Reference Figure 1The water spray assembly includes several mounting bases 81 and spray heads 82. The mounting bases 81 are distributed on the main pipe 1, branch pipe 2 and auxiliary pipe 3. The mounting bases 81 are tubular. The spray heads 82 are connected to the mounting bases 81 and are in communication with the mounting bases 81. In this embodiment, the spray heads 82 are atomizing nozzles. The main pipe 1, branch pipe 2 and auxiliary pipe 3 are respectively connected to the mounting bases 81. When water flows through the main pipe 1, branch pipe 2 and auxiliary pipe 3, under the pressure of the water, the water enters the mounting bases 81 through the main pipe 1, branch pipe 2 and auxiliary pipe 3, and then sprays the water out through the spray heads 82. When in use, it has a certain water pressure and increases the fire extinguishing and cooling range.

[0049] The main pipe 1, branch pipe 2 and auxiliary pipe 3 are detachably equipped with sliding wheels 9. In this embodiment, the sliding wheels 9 are connected and fixed to the outer wall of the main pipe 1, branch pipe 2 and auxiliary pipe 3 by bolts 71 (the prior art will not be described in detail). The sliding wheels 9 are universal wheels. When in use, the whole device can be placed on the ground, so that the sliding wheels 9 contact the ground, and then slide under the vehicle to extinguish the fire.

[0050] The implementation principle of a fire extinguishing device for a new energy vehicle chassis according to an embodiment of this application is as follows: a rectangular frame-like flow channel network formed by splicing main pipe 1, branch pipe 2 and auxiliary pipe 3 is used to achieve full coverage of the new energy vehicle chassis. The inclined section of the main flow pipe 51 in the diversion component can actively guide the water flow to the two sides. With the layout of alternating up and down tilting along the water inlet direction, the water flow is disturbed, thereby improving the distribution efficiency and uniformity of the water flow in the pipe network. The adjustable angle design of the side flow pipe 52 enhances the versatility of the diversion component. Combined with the flow guiding arc edge 54 of the inner through block 53, the system can quickly deliver the water flow to each atomizing nozzle, significantly shortening the response time from water supply to full spray. The bottom universal wheels facilitate rapid deployment, allowing the device to be quickly pushed under the vehicle and achieve efficient and uniform cooling and fire extinguishing.

[0051] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fire extinguishing device for a new energy vehicle chassis, characterized in that, It includes several main pipes (1), with branch pipes (2) on both sides of the main pipes (1), and secondary pipes (3) connected to the ends of the branch pipes (2). Water spraying components are provided on the main pipes (1), branch pipes (2) and secondary pipes (3). The main pipes (1), branch pipes (2) and secondary pipes (3) are connected. The main pipes (1), branch pipes (2) and secondary pipes (3) form a flow channel network. One of the main pipes (1) is connected to a water inlet head (4) in the direction of the flow channel network.

2. A fire extinguishing device for a new energy vehicle chassis according to claim 1, characterized in that, The branch pipes (2) are symmetrically distributed on both sides of the main pipe (1). A diversion component is connected between adjacent main pipes (1). The branch pipes (2) located between adjacent main pipes (1) are respectively connected to the diversion component. The diversion direction angle of the diversion component is not equal to 90°.

3. A fire extinguishing device for a new energy vehicle chassis according to claim 2, characterized in that, The diversion assembly includes a main flow pipe (51) and a side flow pipe (52). The side flow pipe (52) is symmetrically arranged on both sides of the main flow pipe (51). The end of the main pipe (1) is connected to the main flow pipe (51), and the end of the branch pipe (2) is connected to the side flow pipe (52). One end of the main flow pipe (51) is a first port (511), and the other end is a second port (512). The main flow pipe (51) and the side flow pipe (52) are connected. The angle between the extension direction of the main flow pipe (51) and the extension direction of the side flow pipe (52) is not equal to 90°.

4. A fire extinguishing device for a new energy vehicle chassis according to claim 3, characterized in that, The extension directions of the first port (511) and the second port (512) are parallel to the extension direction of the main pipe (1). The middle part of the main flow pipe (51) is inclined, and the side flow pipe (52) is disposed on the side wall of the first port (511).

5. A fire extinguishing device for a new energy vehicle chassis according to claim 4, characterized in that, The main flow pipes (51) at both ends of the same main pipe (1) are inclined upward and downward respectively. The main pipe (1) extends in the horizontal direction. The side flow pipe (52) is bent at the end away from the main flow pipe (51). The extension direction of the bent part of the side flow pipe (52) is perpendicular to the extension direction of the main flow pipe (51).

6. A fire extinguishing device for a new energy vehicle chassis according to claim 4, characterized in that, The side flow pipe (52) is rotatably connected to the main flow pipe (51), and the main flow pipe (51) is provided with a locking component for fixing the side flow pipe (52).

7. A fire extinguishing device for a new energy vehicle chassis according to claim 6, characterized in that, The main flow pipe (51) is rotatably connected to an inner flow block (53), which is connected to the side flow pipe (52). The inner flow block (53) has a through hole that penetrates the inside of the side flow pipe (52). The locking assembly includes an upper lock shell (61) and a lower lock shell (62). Anti-rotation plates (521) are provided on both sides of the side flow pipe (52). The upper lock shell (61) and the lower lock shell (62) clamp the side flow pipe (52) and the anti-rotation plates (521). A sealing element (522) is provided at the connection between the main flow pipe (51) and the side flow pipe (52). The upper lock shell (61) and the lower lock shell (62) are provided with threaded assemblies for fixing.

8. A fire extinguishing device for a new energy vehicle chassis according to claim 7, characterized in that, The inner block (53) has a guide arc edge (54) on the side away from the side flow pipe (52).

9. A fire extinguishing device for a new energy vehicle chassis according to claim 1, characterized in that, The water spray assembly includes several mounting bases (81) and spray heads (82). The mounting bases (81) are distributed on the main pipe (1), branch pipe (2) and auxiliary pipe (3). The spray heads (82) are connected to the mounting bases (81).

10. A fire extinguishing device for a new energy vehicle chassis according to claim 1, characterized in that, The main pipe (1), branch pipe (2) and auxiliary pipe (3) are detachably equipped with sliding wheels (9).

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