Dry powder extinguishing device for charging station and using method of dry powder extinguishing device

Abstract

The invention discloses a dry powder fire extinguishing device for a charging station and a using method thereof, and belongs to the technical field of dry powder fire extinguishing equipment, a pull plate is extruded to drive a placing frame and a dry powder fire extinguisher to move in a fire extinguishing box, a fixing sleeve can drive a plurality of clamping blocks to approach a conical sleeve until the clamping blocks move to the other side of the conical sleeve, and the clamping blocks are fixed; the vertical plate is elastically supported through the supporting assembly, the fixing sleeve drives the conical sleeve to slide outside the fixing column through the four clamping blocks, the fixing sleeve drives the clamping blocks to continue to move, the clamping blocks can move into the sliding grooves after being pressed, the clamping blocks cross the conical sleeve and the conical base, and the purpose of separating the fixing sleeve from the fixing assembly can be achieved; due to the supporting effect of the supporting assembly, the vertical plate can be pushed out by a certain distance through the pushing block, then the pulling plate is pulled, the pulling plate drives the dry powder fire extinguisher to move out of the fire extinguishing box through the containing frame, the dry powder fire extinguisher can be conveniently and rapidly taken out for fire extinguishing work, and the operation convenience and the emergency fire extinguishing effect are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of dry powder fire extinguishing equipment, and specifically relates to a dry powder fire extinguishing device for a charging station and a use method thereof. Background Art

[0002] With the popularity of electric vehicles, the configuration of corresponding charging facilities has also increased. When charging electric vehicles, since a larger current is required, there is a higher fire hazard during the charging process compared to fuel vehicles. Therefore, fire-fighting equipment must be mandatory at electric vehicle charging stations, and dry powder fire extinguishers are one of them.

[0003] At present, dry powder fire extinguishers are usually installed near charging facilities so that they can be used at any time. Dry powder fire extinguishers are fixed to the placement surface by the cooperation between clamps and bolts. The disassembly and assembly are relatively complicated, which makes their use flexibility poor and difficult to achieve the purpose of quick access, which can easily cause serious accidents due to untimely fire extinguishing. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a dry powder fire extinguishing device for a charging station and a method of using the same, which solves the problem that the dry powder fire extinguisher is fixed to the placement surface by the cooperation between the clamp and the bolt, and the disassembly and assembly are relatively complicated, making its use flexibility poor and difficult to achieve the purpose of quick access, which in turn easily causes serious accidents due to untimely fire extinguishing.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dry powder fire extinguishing device for a charging station, comprising a fire extinguishing box, wherein a dry powder fire extinguisher is arranged in the fire extinguishing box, a mounting assembly is installed at the bottom of the dry powder fire extinguisher, the mounting assembly is installed in the fire extinguishing box, one side of the mounting assembly is fixedly connected with a vertical plate, two supporting assemblies are overlapped on the side of the vertical plate away from the dry powder fire extinguisher, the end of the supporting assembly is fixed to one side of the inner wall of the fire extinguishing box, a slide is provided at the bottom of the inner wall of the fire extinguishing box, the bottom of the vertical plate is slidably connected in the slide, a groove is provided on the back side of the fire extinguishing box, a through hole is provided at the bottom of the inner wall of the groove, the vertical plate is slidably connected in the through hole, one side of the top of the vertical plate is fixedly connected to a limiting assembly, a fixing assembly is provided in the limiting assembly, and one end of the fixing assembly is fixedly connected to one side of the inner wall of the groove.

[0006] As a further solution of the present invention: a first aid kit is mounted above the inner wall of the fire extinguisher box, a cover plate is installed on the front of the fire extinguisher box at the position corresponding to the first aid kit, a box door is installed on the front of the fire extinguisher box at the position corresponding to the dry powder fire extinguisher, and a hanging mounting frame is fixed on the back of the fire extinguisher box.

[0007] As a further solution of the present invention: the erection assembly includes a pull plate, a placement rack is fixed on one side of the pull plate, an arc-shaped groove is opened on one side of the inner wall of the placement rack, and the dry powder fire extinguisher is located in the arc-shaped groove in the placement rack.

[0008] As a further solution of the present invention: the support assembly includes a telescopic rod, one end of the telescopic rod is fixed to one side of the inner wall of the fire extinguisher box, the other end of the telescopic rod is fixed with a push block, the push block overlaps one side of the vertical plate, and the outer sleeve of the telescopic rod is connected with a first spring, one end of the first spring is fixed to one side of the push block.

[0009] As a further solution of the present invention: the limiting assembly includes a fixing sleeve, one side of the fixing sleeve is fixed to the vertical plate, the inner wall of the fixing sleeve is provided with four sliding grooves, a sliding rod is installed in the sliding groove, and a clamping block is fixed to the end of the sliding rod.

[0010] As a further solution of the present invention: the clamping block is wedge-shaped, the end of the clamping block overlaps the fixed component, the sliding rod is outer-mounted with a second spring, one end of the second spring is fixed to the inner wall of the sliding groove, and the other end of the second spring is fixedly connected to the clamping block.

[0011] As a further solution of the present invention: the fixing assembly includes a fixing column, one end of which is fixedly connected to one side of the inner wall of the groove, the other end of which is fixed with a conical seat, and the outer shell of the fixing column is connected with a conical sleeve.

[0012] A method for using a dry powder fire extinguishing device for a charging station, the method comprising the following steps:

[0013] The fire extinguishing box is installed near the charging facility through the hanging mounting frame. When the fire extinguishing work is carried out, the pull plate in the erection assembly is squeezed, so that the pull plate drives the placement frame and the dry powder fire extinguisher to move in the fire extinguishing box. At the same time, the placement frame can push the vertical plate to slide in the slideway and the perforation, and the vertical plate drives the fixed sleeve to move outside the fixed assembly, so that the fixed sleeve can drive multiple blocks to approach the conical sleeve. Because one side of the block is designed as an inclined surface, when the block squeezes the conical sleeve, the block is pressed and drives the slide bar to slide in the slide groove until the block moves to the other side of the conical sleeve. At this time, the block is supported by the elastic force of the second spring, so that the multiple blocks can approach each other and the pull plate is no longer squeezed.

[0014] The support assembly elastically supports the vertical plate, so that the vertical plate drives the fixed sleeve to move in the opposite direction, and the fixed sleeve drives the conical sleeve to slide outside the fixed column through four clamping blocks. When the conical sleeve contacts the conical seat, the conical sleeve stops moving, and the fixed sleeve drives the clamping blocks to continue moving. After being pressed, the clamping blocks can move into the inside of the slide groove, so that they pass over the conical sleeve and the conical seat, thereby achieving the purpose of separating the fixed sleeve from the fixed assembly;

[0015] Because the vertical plate is supported by the supporting assembly, the elastic force of the first spring can push the push block to move, and the telescopic rod and the push block can push the vertical plate out of one end. Then, the pull plate is pulled, so that the pull plate drives the dry powder fire extinguisher to move out of the fire extinguishing box through the placement rack, so that the dry powder fire extinguisher is completely exposed to the outside, so that the dry powder fire extinguisher can be quickly taken out for fire extinguishing. When first aid is needed, the first aid kit can be exposed to the outside by opening the cover on the fire extinguishing box, and the first aid kit can be used;

[0016] When storing the dry powder fire extinguisher, place it in the arc groove inside the placement rack to limit the dry powder fire extinguisher. Secondly, push the pull plate to drive the dry powder fire extinguisher to move into the fire extinguishing box through the placement rack. The placement rack drives the fixing sleeve to move to the outside of the fixed assembly through the vertical plate. When the block contacts the conical seat, the block is pressed and moves into the slide groove. When the block moves to the other side of the conical seat, the elastic force of the second spring supports the block so that the block can be stuck in the plane position of the conical seat, thereby achieving the purpose of locking the fixing sleeve and preventing the erection assembly and the dry powder fire extinguisher from moving outside the fire extinguishing box.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the pulling plate is squeezed to drive the placement rack and the dry powder fire extinguisher to move in the fire extinguishing box. At the same time, the placement rack can drive the fixed sleeve to move outside the fixed assembly through the vertical plate, so that the fixed sleeve can drive multiple clamping blocks to approach the conical sleeve. When the clamping block squeezes the conical sleeve, the clamping block is pressed and drives the slide bar to slide in the slide groove until the clamping block moves to the other side of the conical sleeve. At this time, the clamping block is supported by the elastic force of the second spring, so that the multiple clamping blocks can approach each other. The vertical plate is elastically supported by the supporting assembly, so that the vertical plate drives the fixed sleeve to move in the opposite direction, and the fixed sleeve drives the conical sleeve through the four clamping blocks. When the cone sleeve contacts the cone seat, the cone sleeve stops moving, and the fixed sleeve drives the card block to continue to move. After being compressed, the card block can move into the inside of the slide groove, so that it passes over the cone sleeve and the cone seat, thereby achieving the purpose of separating the fixed sleeve from the fixed assembly. Because the vertical plate is supported by the supporting assembly, the elastic force of the first spring can push the push block to move, and the telescopic rod and the push block can push the vertical plate out of one end. Secondly, pull the pull plate, so that the pull plate drives the dry powder fire extinguisher to move out of the fire extinguishing box through the placement rack, which is convenient for quickly taking out the dry powder fire extinguisher for fire extinguishing, thereby improving the convenience of operation and the emergency fire extinguishing effect.

[0019] 2. In the present invention, by placing the dry powder fire extinguisher in the arc groove inside the placement rack, the dry powder fire extinguisher is limited, the placement stability of the dry powder fire extinguisher is improved, the traditional clamp method for fixing is abandoned, and the loading and unloading of the dry powder fire extinguisher is convenient. The pull plate is pushed to drive the dry powder fire extinguisher to move into the fire extinguishing box through the placement rack, and the placement rack drives the fixing sleeve to move to the outside of the fixing component through the vertical plate. When the clamping block contacts the conical seat, the clamping block is pressed and moves into the slide groove. When the clamping block moves to the other side of the conical seat, the elastic force of the second spring supports the clamping block, so that the clamping block can be clamped in the plane position of the conical seat, and the fixing sleeve can be locked to prevent the dry powder fire extinguisher from moving out of the fire extinguishing box, thereby facilitating the storage of the dry powder fire extinguisher. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the present invention from the rear;

[0022] Figure 3 It is a structural schematic diagram of the fire extinguishing box of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the erection assembly of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the connection between the vertical plate and the supporting assembly of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the limiting component and the fixing component of the present invention;

[0026] In the figure: 1. fire extinguisher box; 2. dry powder fire extinguisher; 3. erection assembly; 301. pull plate; 302. placement rack; 303. arc groove; 4. vertical plate; 5. support assembly; 501. telescopic rod; 502. push block; 503. first spring; 6. slideway; 7. perforation; 8. groove; 9. limit assembly; 901. fixing sleeve; 902. slideway; 903. slide rod; 904. block; 905. second spring; 10. fixing assembly; 101. fixing column; 102. conical seat; 103. conical sleeve; 11. first aid kit; 12. hanging mounting frame; 13. box door; 14. cover plate. DETAILED DESCRIPTION

[0027] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0028] like Figure 1-6As shown, the present invention provides a technical solution: a dry powder fire extinguishing device for a charging station, comprising a fire extinguishing box 1, a dry powder fire extinguisher 2 is arranged in the fire extinguishing box 1, a first aid kit 11 is mounted above the inner wall of the fire extinguishing box 1, when first aid is provided, the first aid kit 11 is exposed to the outside by opening a cover plate 14 on the fire extinguishing box 1, and the first aid kit 11 can be used, a cover plate 14 is installed on the front of the fire extinguishing box 1 corresponding to the position of the first aid kit 11, a box door 13 is installed on the front of the fire extinguishing box 1 corresponding to the position of the dry powder fire extinguisher 2, and a hanging mounting frame 12 is fixed on the back of the fire extinguishing box 1, so as to facilitate the hanging installation of the fire extinguishing box 1;

[0029] A mounting assembly 3 is installed at the bottom of the dry powder fire extinguisher 2, and the mounting assembly 3 is installed in the fire extinguishing box 1. A vertical plate 4 is fixedly connected to one side of the mounting assembly 3. The mounting assembly 3 includes a pull plate 301, and a placement rack 302 is fixed to one side of the pull plate 301. An arc groove 303 is opened on one side of the inner wall of the placement rack 302. The dry powder fire extinguisher 2 is located in the arc groove 303 in the placement rack 302. When the dry powder fire extinguisher 2 is stored, it is placed in the arc groove 303 inside the placement rack 302, which plays a role in limiting the position of the dry powder fire extinguisher 2 and improving the placement stability of the dry powder fire extinguisher 2.

[0030] Two support assemblies 5 are overlapped on one side of the vertical plate 4 away from the dry powder fire extinguisher 2, and the end of the support assembly 5 is fixed to one side of the inner wall of the fire extinguisher box 1. The support assembly 5 includes a telescopic rod 501, one end of the telescopic rod 501 is fixed to one side of the inner wall of the fire extinguisher box 1, and the other end of the telescopic rod 501 is fixed with a push block 502, and the push block 502 overlaps one side of the vertical plate 4. A first spring 503 is connected to the outer sleeve of the telescopic rod 501, and one end of the first spring 503 is fixed to one side of the push block 502. The push block 502 can be pushed to move by the elastic force of the first spring 503. The telescopic rod 501 and the push block 502 can push the vertical plate 4 out of one end, so that the pull plate 301 is pulled to move the placement rack 302 and the dry powder fire extinguisher 2 out of the fire extinguisher box 1.

[0031] A slide 6 is provided at the bottom of the inner wall of the fire extinguisher box 1, and the bottom of the vertical plate 4 is slidably connected in the slide 6. A groove 8 is provided on the back of the fire extinguisher box 1, and a through hole 7 is provided at the bottom of the inner wall of the groove 8. The vertical plate 4 is slidably connected in the through hole 7. A limiting component 9 is fixedly connected to one side of the top of the vertical plate 4. The limiting component 9 includes a fixing sleeve 901, one side of the fixing sleeve 901 is fixed to the vertical plate 4, and four sliding grooves 902 are provided on the inner wall of the fixing sleeve 901. A sliding rod 903 is installed in the sliding groove 902, and a block 904 is fixed to the end of the sliding rod 903;

[0032] The clamping block 904 is wedge-shaped, and the end of the clamping block 904 overlaps with the fixing component 10. The sliding rod 903 is outer-mounted with a second spring 905. One end of the second spring 905 is fixed to the inner wall of the slide groove 902, and the other end of the second spring 905 is fixedly connected to the clamping block 904. The clamping block 904 is supported by the elastic force of the second spring 905, so that the clamping block 904 can be clamped in the plane position of the conical seat 102, and the fixing sleeve 901 can be locked to prevent the vertical plate 4 from being supported by the supporting component 5 and driving the erection component 3 to move out of the fire extinguisher box 1.

[0033] A fixing component 10 is provided in the limiting component 9, one end of the fixing component 10 is fixedly connected to one side of the inner wall of the groove 8, and the fixing component 10 includes a fixing column 101, one end of the fixing column 101 is fixedly connected to one side of the inner wall of the groove 8, and the other end of the fixing column 101 is fixed with a conical seat 102, and a conical sleeve 103 is connected to the outer sleeve of the fixing column 101. When the conical sleeve 103 contacts the conical seat 102, the conical sleeve 103 no longer moves, and the fixing sleeve 901 drives the block 904 to continue to move. After being pressed, the block 904 can move into the inside of the slide groove 902, so that it passes over the conical sleeve 103 and the conical seat 102, which is convenient for separating the fixing sleeve 901 from the fixing component 10.

[0034] A method for using a dry powder fire extinguishing device for a charging station, the method comprising the following steps:

[0035] The fire extinguishing box 1 is installed near the charging facility through the hanging mounting frame 12. When the fire extinguishing work is carried out, the pull plate 301 in the erection assembly 3 is squeezed, so that the pull plate 301 drives the placement frame 302 and the dry powder fire extinguisher 2 to move in the fire extinguishing box 1, and at the same time, the placement frame 302 can push the vertical plate 4 to slide in the slideway 6 and the perforation 7, and the vertical plate 4 drives the fixed sleeve 901 to move outside the fixed assembly 10, so that the fixed sleeve 901 can drive multiple blocks 904 to move closer to the conical sleeve 103. Because one side of the block 904 is designed as an inclined surface, when the block 904 squeezes the conical sleeve 103, the block 904 is compressed and drives the slide bar 903 to slide in the slide groove 902 until the block 904 moves to the other side of the conical sleeve 103. At this time, the block 904 is supported by the elastic force of the second spring 905, so that the multiple blocks 904 can move closer to each other, and the pull plate 301 is no longer squeezed;

[0036] The support assembly 5 elastically supports the vertical plate 4, so that the vertical plate 4 drives the fixing sleeve 901 to move in the opposite direction, and the fixing sleeve 901 drives the conical sleeve 103 to slide outside the fixing column 101 through the four clamping blocks 904. When the conical sleeve 103 contacts the conical seat 102, the conical sleeve 103 stops moving, and the fixing sleeve 901 drives the clamping blocks 904 to continue moving. After being pressed, the clamping blocks 904 can move into the inside of the slide groove 902, so that they pass over the conical sleeve 103 and the conical seat 102, and the purpose of separating the fixing sleeve 901 from the fixing assembly 10 is achieved.

[0037] Because the vertical plate 4 is supported by the supporting assembly 5, the elastic force of the first spring 503 can push the push block 502 to move, and the telescopic rod 501 and the push block 502 can push the vertical plate 4 out of one end. Then, the pull plate 301 is pulled, so that the pull plate 301 drives the dry powder fire extinguisher 2 to move out of the fire extinguishing box 1 through the placement rack 302, so that the dry powder fire extinguisher 2 is completely exposed to the outside, so that the dry powder fire extinguisher 2 can be quickly taken out for fire extinguishing. When first aid is needed, the cover plate 14 on the fire extinguishing box 1 is opened to expose the first aid kit 11 to the outside, and the first aid kit 11 can be used.

[0038] When storing the dry powder fire extinguisher 2, it is placed in the arc groove 303 inside the placement rack 302, which plays a role in limiting the dry powder fire extinguisher 2. Secondly, the pull plate 301 is pushed, so that the pull plate 301 drives the dry powder fire extinguisher 2 to move into the fire extinguishing box 1 through the placement rack 302, and the placement rack 302 drives the fixing sleeve 901 to move to the outside of the fixing component 10 through the vertical plate 4. When the block 904 contacts the conical seat 102, the block 904 is pressed and moves into the slide groove 902. When the block 904 moves to the other side of the conical seat 102, the block 904 is supported by the elastic force of the second spring 905, so that the block 904 can be clamped in the plane position of the conical seat 102, thereby achieving the purpose of locking the fixing sleeve 901, so that the mounting component 3 and the dry powder fire extinguisher 2 will not move outside the fire extinguishing box 1.

[0039] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

Claims

1. A dry powder fire extinguishing device for a charging station, comprising a fire extinguishing box (1), characterized in that: A dry powder fire extinguisher (2) is arranged in the fire extinguishing box (1), a mounting assembly (3) is installed at the bottom of the dry powder fire extinguisher (2), the mounting assembly (3) is installed in the fire extinguishing box (1), one side of the mounting assembly (3) is fixedly connected to a vertical plate (4), the side of the vertical plate (4) away from the dry powder fire extinguisher (2) is overlapped with two supporting assemblies (5), the end of the supporting assembly (5) is fixed to one side of the inner wall of the fire extinguishing box (1), and the bottom of the inner wall of the fire extinguishing box (1) is provided with a A slideway (6), the bottom of the vertical plate (4) is slidably connected in the slideway (6), a groove (8) is provided on the back of the fire extinguisher box (1), a through hole (7) is provided at the bottom of the inner wall of the groove (8), the vertical plate (4) is slidably connected in the through hole (7), one side of the top of the vertical plate (4) is fixedly connected to a limiting component (9), a fixing component (10) is provided in the limiting component (9), and one end of the fixing component (10) is fixedly connected to one side of the inner wall of the groove (8).

2. A dry powder fire extinguishing device for a charging station according to claim 1, characterized in that: A first aid kit (11) is mounted above the inner wall of the fire extinguishing box (1), a cover plate (14) is installed on the front of the fire extinguishing box (1) at a position corresponding to the first aid kit (11), a box door (13) is installed on the front of the fire extinguishing box (1) at a position corresponding to the dry powder fire extinguisher (2), and a hanging mounting frame (12) is fixed on the back of the fire extinguishing box (1).

3. A dry powder fire extinguishing device for a charging station according to claim 1, characterized in that: The erection assembly (3) comprises a pull plate (301), a placement rack (302) is fixed on one side of the pull plate (301), an arc-shaped groove (303) is opened on one side of the inner wall of the placement rack (302), and the dry powder fire extinguisher (2) is located in the arc-shaped groove (303) in the placement rack (302).

4. A dry powder fire extinguishing device for a charging station according to claim 1, characterized in that: The support assembly (5) comprises a telescopic rod (501), one end of the telescopic rod (501) is fixed to one side of the inner wall of the fire extinguisher box (1), the other end of the telescopic rod (501) is fixed with a push block (502), the push block (502) is overlapped with one side of the vertical plate (4), and the outer shell of the telescopic rod (501) is connected with a first spring (503), one end of the first spring (503) is fixed to one side of the push block (502).

5. A dry powder fire extinguishing device for a charging station according to claim 1, characterized in that: The limiting assembly (9) comprises a fixing sleeve (901), one side of which is fixed to the vertical plate (4), the inner wall of the fixing sleeve (901) is provided with four sliding grooves (902), a sliding rod (903) is installed in the sliding groove (902), and a clamping block (904) is fixed at the end of the sliding rod (903).

6. A dry powder fire extinguishing device for a charging station according to claim 5, characterized in that: The clamping block (904) is wedge-shaped, and the end of the clamping block (904) overlaps with the fixing assembly (10). The outer sleeve of the sliding rod (903) is provided with a second spring (905), one end of the second spring (905) is fixed to the inner wall of the sliding groove (902), and the other end of the second spring (905) is fixedly connected to the clamping block (904).

7. A dry powder fire extinguishing device for a charging station according to claim 1, characterized in that: The fixing assembly (10) comprises a fixing column (101), one end of which is fixedly connected to one side of the inner wall of the groove (8), the other end of which is fixed with a conical seat (102), and the outer shell of the fixing column (101) is connected with a conical sleeve (103).

8. A method for using a dry powder fire extinguishing device for a charging station, according to any one of claims 1 to 7, characterized in that: The method of use comprises the following steps: The fire extinguishing box (1) is installed near the charging facility by means of a hanging mounting frame (12). When a fire extinguishing operation is performed, the pulling plate (301) in the mounting assembly (3) is squeezed so that the pulling plate (301) drives the placement frame (302) and the dry powder fire extinguisher (2) to move in the fire extinguishing box (1). At the same time, the placement frame (302) can push the vertical plate (4) to slide in the slideway (6) and the perforation (7). The vertical plate (4) drives the fixing sleeve (901) to move outside the fixing assembly (10), so that the fixing sleeve (901) can drive The plurality of clamping blocks (904) approach the conical sleeve (103). Since one side of the clamping block (904) is designed as an inclined surface, when the clamping block (904) squeezes the conical sleeve (103), the clamping block (904) is pressed and drives the slide bar (903) to slide in the slide groove (902) until the clamping block (904) moves to the other side of the conical sleeve (103). At this time, the clamping block (904) is supported by the elastic force of the second spring (905), so that the plurality of clamping blocks (904) can approach each other and no longer squeeze the pull plate (301). The support assembly (5) elastically supports the vertical plate (4), so that the vertical plate (4) drives the fixed sleeve (901) to move in the opposite direction, and the fixed sleeve (901) drives the conical sleeve (103) to slide outside the fixed column (101) through the four clamping blocks (904). When the conical sleeve (103) contacts the conical seat (102), the conical sleeve (103) stops moving, and the fixed sleeve (901) drives the clamping blocks (904) to continue moving. After being pressed, the clamping blocks (904) can move into the inside of the slide groove (902) so that they pass over the conical sleeve (103) and the conical seat (102), thereby achieving the purpose of separating the fixed sleeve (901) from the fixed assembly (10); Because the vertical plate (4) is supported by the support assembly (5), the elastic force of the first spring (503) can push the push block (502) to move, and the telescopic rod (501) and the push block (502) can push the vertical plate (4) out of one end. Then, the pull plate (301) is pulled, so that the pull plate (301) drives the dry powder fire extinguisher (2) to move out of the fire extinguishing box (1) through the placement rack (302), so that the dry powder fire extinguisher (2) is completely exposed to the outside, so that the dry powder fire extinguisher (2) can be quickly taken out for fire extinguishing. When first aid is needed, the cover plate (14) on the fire extinguishing box (1) is opened to expose the first aid kit (11) to the outside, and the first aid kit (11) can be used. When storing the dry powder fire extinguisher (2), it is placed in the arc groove (303) inside the placement rack (302) to limit the position of the dry powder fire extinguisher (2). Then, the pull plate (301) is pushed so that the pull plate (301) drives the dry powder fire extinguisher (2) to move into the fire extinguishing box (1) through the placement rack (302). The placement rack (302) drives the fixing sleeve (901) to move outside the fixing assembly (10) through the vertical plate (4). The clamping block (904) and the conical seat ( When the clamping block (904) contacts the conical seat (102), the clamping block (904) is pressed and moves into the slide groove (902). When the clamping block (904) moves to the other side of the conical seat (102), the clamping block (904) is supported by the elastic force of the second spring (905), so that the clamping block (904) can be clamped in the plane position of the conical seat (102), thereby achieving the purpose of locking the fixing sleeve (901), so that the mounting assembly (3) and the dry powder fire extinguisher (2) will not move outside the fire extinguishing box (1).

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