A spliced fire extinguisher case

Abstract

The utility model relates to the technical field of fire fighting equipment, more particularly to a spliced fire extinguisher box, including box frame, baffle and the bottom plate for placing fire extinguisher, the box frame is cubic structure, the bottom plate is installed at the bottom of box frame, the baffle is installed at the side of box frame, the box frame includes several frame units that splice in proper order, the frame unit is cubic structure, two frame units that splice each other share four edges, can splice into the box frame with different volume with different number of frame units, to adapt to different number, the fire extinguisher of specification and the fire extinguisher placing space of different size, place several fire extinguishers on the bottom plate of several frame units respectively, the edge that the adjacent frame unit shares separates the fire extinguisher placed in the adjacent frame unit, the baffle can prevent the fire extinguisher from falling outside the frame unit when toppling.

Description

Technical Field

[0001] This utility model relates to the technical field of fire-fighting equipment, and more specifically, to a modular fire extinguisher box. Background Technology

[0002] Existing fire extinguisher boxes are basically vertical boxes made of bent and welded sheet metal. After the fire extinguishers are placed in the box, it is relatively heavy and inconvenient to move, requiring a certain amount of transportation costs. In the event of a fire, the fire extinguishers must be carried by hand to the fire scene, which is physically demanding if the distance is long. Welded fire extinguisher boxes take up a lot of space, resulting in high transportation costs over long distances, and they are also prone to collisions during transportation, causing damage to the product. Once a welded fire extinguisher box is damaged, it generally needs to be replaced entirely.

[0003] Patent CN211659136U discloses a fire extinguisher box, including a box body and fire extinguishers. The box body includes a box frame and a box panel. The box frame is a cuboid structure formed by splicing support rods. A three-way connector is provided at the top corner of the box frame to connect the support rods. The three-way connector and the end of the support rod are connected by a socket joint. The three-way connector and the end of the support rod are fixedly connected by a positioning and fixing device. The support rod has two slots along its length for fixing the box panel, and the two slots are fixed to the outer surface of the support rod at a 90-degree angle. The box panel also includes a front panel that can be opened and closed at the front of the box frame and a top panel that can be opened and closed at the top of the box frame. This fire extinguisher box is easy to transport and saves on transport volume and costs. However, in the above solution, the structure of the fire extinguisher box is fixed. With a fixed length of support rods, the volume of the fire extinguisher box cannot be changed, and the number of fire extinguishers it can hold is fixed, making it inflexible in use. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies that cannot adjust the volume of fire extinguisher boxes, and to provide a modular fire extinguisher box that can be assembled into fire extinguisher boxes of different volumes as needed, thereby changing the number of fire extinguishers it can hold.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A modular fire extinguisher box is provided, comprising a box frame, a baffle, and a base plate for placing fire extinguishers. The box frame has a cubic structure, the base plate is installed at the bottom of the box frame, and the baffle is installed on the side of the box frame. The box frame includes a plurality of sequentially assembled frame units, each frame unit having a cubic structure, and adjacent frame units sharing four edges.

[0006] This utility model relates to a modular fire extinguisher box, which can be assembled into a box frame with different volumes by splicing different numbers of frame units to accommodate different numbers and specifications of fire extinguishers and different sizes of fire extinguisher placement space. Several fire extinguishers are placed on the bottom plate of several frame units respectively. The common edge of adjacent frame units separates the fire extinguishers placed in adjacent frame units, and the baffle can prevent the fire extinguishers from falling outside the frame unit when tilted.

[0007] Furthermore, the frame unit includes a support rod and a connector. The support rod is located on each edge of the frame unit, and the connector is located on each apex of the frame unit. The support rod is detachably connected to the connector. The base plate and the baffle are detachably mounted on the support rod or the connector. Two adjacent frame units are connected by the connector. During installation, twelve support rods and eight connectors are assembled into a frame unit. A rectangular frame assembled with new support rods and connectors is then connected to the original frame unit's connectors via four support rods perpendicular to the rectangular frame, forming two interconnected frame units. The box frame is extended, and so on, using support rods and connectors to assemble a box frame of suitable size. A base plate and baffle with an area adapted to the box frame are installed on the box frame, and the fire extinguisher is placed on the base plate to complete the installation. If the fire extinguisher box is damaged, the damaged support rods, connectors, and other accessories can be replaced instead of replacing the entire box, reducing production costs. Furthermore, the volume of the fire extinguisher box can be changed by adding support rods and connectors or replacing them with support rods of different lengths.

[0008] Furthermore, the connectors include tee fittings and four-way fittings. The support rods are connected to the tee fittings or four-way fittings. The tee fittings are located at the top corners of the housing frame, and two adjacent frame units are connected by four-way fittings. During installation, the support rods and connectors are used to assemble frame units. The four top corners on one side of the frame unit are four-way fittings. At this time, each four-way fitting is connected to three support rods, and each has one interface that is not connected to a support rod. One end of four new support rods is connected to the remaining interfaces of the four four-way fittings on one side of the frame unit, and the other end is connected to four other support rods through tee fittings or four-way fittings, thus assembling two connected frame units. This process is repeated to extend the housing frame, which can accommodate different numbers of fire extinguishers.

[0009] Furthermore, the top of the housing frame is provided with a handle for moving the fire extinguisher box. The fire extinguisher box can be moved more easily by pushing, pulling, or lifting the handle.

[0010] Furthermore, the handle includes a control lever, two transmission rods, and a two-way connector. One end of each of the two transmission rods is inserted into one of the two connecting members and connected to the top of one of the two support rods arranged vertically. The other end is connected to the two-way connector. The control lever is connected between the two two-way connectors. The transmission rods can be moved by pushing, pulling, or lifting the control lever, and the transmission rods move the fire extinguisher box.

[0011] Furthermore, it also includes several connecting rods and casters. One end of each connecting rod is inserted into the connector and connected to the bottom of the vertically positioned support rod, while the other end is connected to the caster. When the fire extinguisher box needs to be moved, pushing or pulling the box converts the sliding friction between the box and the ground into rolling friction, saving the force required to move the box and allowing it to move in any direction.

[0012] Furthermore, the connecting rod is a hollow tube structure, and an expansion plug is installed inside the connecting rod. A locking screw is located at the top of the caster wheel, and the locking screw is inserted into the expansion plug. When installing the caster wheel, the locking screw at the top of the caster wheel is inserted into the expansion plug, and the caster wheel is tightened. The rotation of the locking screw causes the expansion plug to expand, pressing against the inner wall of the connecting rod, increasing the friction between the expansion plug and the inner wall of the connecting rod, thus fixing the caster wheel in place.

[0013] Furthermore, the bottom of the box frame is also provided with support members for supporting the fire extinguisher box. Several of these support members are located at the bottom of a support rod or connector on one edge of the box frame, and the connector is located at the bottom of an edge parallel to the edge where the support member is located. When the fire extinguisher box needs to be moved, tilt the fire extinguisher box to lift the support members off the ground, use the casters to support the fire extinguisher box, and push or pull the fire extinguisher box to move it. After moving to the destination, straighten the fire extinguisher box, and the support members will re-contact the ground, providing support for the fire extinguisher box and increasing the friction between the fire extinguisher box and the ground to prevent the fire extinguisher box from moving on its own.

[0014] Furthermore, the support rod is a hollow tube structure. This hollow tube structure reduces the weight of the fire extinguisher box and lowers material costs.

[0015] Furthermore, the support rod and the connector are connected by screws. Connecting the support rod and the connector with screws simplifies installation and disassembly, and ensures good connection stability.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This utility model relates to a modular fire extinguisher box with the following advantages: 1. It can be assembled from different numbers of frame units to form a box frame with different volumes, to accommodate different numbers and specifications of fire extinguishers and different sizes of fire extinguisher placement space; 2. When the fire extinguisher box is damaged, the damaged support rods, connectors and other accessories can be replaced without replacing the whole box, thus reducing production costs; 3. The volume of the fire extinguisher box can be changed by adding support rods and connectors, or by replacing support rods of different lengths. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the modular fire extinguisher box according to the second embodiment; Figure 2 This is a structural schematic diagram of the modular fire extinguisher box according to the first embodiment; Figure 3 This is a schematic diagram of the frame structure of the modular fire extinguisher box according to the first embodiment; Figure 4 This is a schematic diagram of the bottom of the three frame units of the modular fire extinguisher box in the first embodiment being spliced ​​together. Figure 5 This is a schematic diagram of the frame structure of the modular fire extinguisher box according to the second embodiment; Figure 6 This is a schematic diagram of the universal wheels of the modular fire extinguisher box of this utility model; Figure 7 This is a schematic diagram of the modular fire extinguisher box of this utility model when it is moved. Figure 8 This is a structural diagram of the modular fire extinguisher box of this utility model during disassembly and packaging. Figure 9 This is a schematic diagram of the control lever and two-way component of the modular fire extinguisher box of this utility model.

[0018] In the attached diagram: 1. Box frame; 11. Frame unit; 111. Support rod; 1111. Horizontal bar; 1112. Vertical bar; 1113. Intermediate rod; 112. T-joint; 113. Four-way joint; 114. Screw; 2. Baffle; 3. Base plate; 31. Clearance notch; 4. Handle; 41. Control lever; 42. Transmission rod; 43. Two-way joint; 5. Connecting rod; 51. Expansion plug; 6. Caster wheel; 61. Locking screw; 62. Braking device; 7. Support component; 8. Fire extinguisher. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Example 1 like Figure 2 and Figure 3 The first embodiment of the modular fire extinguisher box of this utility model is shown, which includes a box frame 1, a baffle 2 and a bottom plate 3 for placing fire extinguishers 8. The box frame 1 has a cubic structure, the bottom plate 3 is installed at the bottom of the box frame 1, and the baffle 2 is installed on the side of the box frame 1. The box frame 1 includes a number of sequentially spliced ​​frame units 11. The frame unit 11 has a cubic structure, and two adjacent frame units 11 that are spliced ​​together share four edges.

[0022] The modular fire extinguisher box of this utility model can be assembled into a box frame 1 with different volumes by splicing different numbers of frame units 11 to accommodate different numbers and specifications of fire extinguishers 8 and different sizes of fire extinguishers 8. Several fire extinguishers 8 are placed on the base plate 3 of several frame units 11 respectively. The common edge of adjacent frame units 11 separates the fire extinguishers 8 placed in adjacent frame units 11. The baffle 2 can prevent the fire extinguishers 8 from falling outside the frame unit 11 when tilted.

[0023] like Figure 2As shown, the frame unit 11 includes a support rod 111 and a connector. The support rod 111 is located on each edge of the frame unit 11, and the connector is located on each apex of the frame unit 11. The support rod 111 is detachably connected to the connector. The base plate 3 and the baffle 2 are detachably installed on the support rod 111 or the connector. Two adjacent frame units 11 are connected by the connector. During installation, twelve support rods 111 and eight connectors are assembled into a frame unit 11. A rectangular frame assembled with new support rods 111 and connectors is connected to the original frame unit 11 via four support rods 111 perpendicular to the rectangular frame, forming two interconnected frame units 11. The box frame 1 is extended, and so on, using support rods 111 and connectors to assemble a box frame 1 of suitable size. A base plate 3 and a baffle 2 with an area adapted to the box frame 1 are installed on the box frame 1. The fire extinguisher 8 is placed on the base plate 3 to complete the installation. When the fire extinguisher box is damaged, the damaged support rods 111, connectors, and other accessories can be replaced without replacing the entire box, reducing production costs. Furthermore, the volume of the fire extinguisher box can be changed by adding support rods 111 and connectors or by replacing support rods 111 of different lengths.

[0024] The connectors include tee fittings 112 and four-way fittings 113. Support rods 111 are connected to tee fittings 112 or four-way fittings 113. Tee fittings 112 are located at the top corners of the housing frame 1. Two adjacent frame units 11 are connected by four-way fittings 113. During installation, support rods 111 and connectors are used to assemble frame units 11. The four top corners on one side of the frame unit 11 are four-way fittings 113. At this time, each four-way fitting 113 is connected to three support rods 111, and each has one interface that is not connected to a support rod 111. One end of four new support rods 111 is connected to the remaining interfaces of the four four-way fittings 113 on one side of the frame unit 11, and the other end is connected to the other four support rods 111 through tee fittings 112 or four-way fittings 113, thus assembling two connected frame units 11. This process is repeated to extend the housing frame 1.

[0025] Any box frame 1 capable of accommodating the fire extinguishers to be placed can be applied to this utility model, such as a box frame 1 composed of three frame units 11 spliced ​​together, such as... Figure 4As shown, the box frame 1 structure listed in this embodiment is not intended to limit the present utility model. In this embodiment, the box frame 1 consists of two frame units 11, and is provided with twenty support rods 111, eight three-way members 112, four four-way members 113, four baffles 2, and two bottom plates 3. The support rods 111 on the vertical edges of the box frame 1 are referred to as vertical rods 1112, and the support rods 111 on the horizontal edges of the box frame 1 are referred to as horizontal rods 1111. In the four edges, each edge is provided with Two horizontal bars 1111 are inserted into a four-way connector 113 at their near ends; the common support bar 111 between the frame units 11 is designated as the intermediate bar 1113; eight three-way connectors 112 are located at the eight vertices of the box frame 1; four four-way connectors 113 are connected between the intermediate bar 1113 and the horizontal bars 1111; each baffle 2 is fixedly connected to two adjacent vertical bars 1112; each bottom plate 3 is fixedly connected to the four horizontal bars 1111 at the bottom of a frame unit 11; as shown Figure 4 As shown, there are clearance notches on the four corners of the base plate. When installing the base plate, the four sides of the base plate are placed on the four support rods and fixed. The clearance notches can prevent the four corners of the base plate from interfering with the connecting parts. The base plates installed on two adjacent frame units overlap each other.

[0026] The working principle of this embodiment is as follows: During installation, four horizontal bars 1111, two tee fittings 112, and two four-way fittings 113 are assembled into a rectangular frame, referred to as the upper top frame. Then, another four horizontal bars 1111, two tee fittings 112, and two four-way fittings 113 are assembled into a rectangular frame, referred to as the lower bottom frame. The vertical bars 1112 are connected between the tee fittings 112 of the upper top frame and the tee fittings 112 of the lower bottom frame, as well as between the four-way fittings 113 of the upper top frame and the four-way fittings 113 of the lower bottom frame, thus completing one frame unit 1. For the installation of frame 1, one end of each of the four horizontal bars 1111 is inserted into one of the four four-way connectors 113 of the frame unit 11, and the other end is inserted into one of the four three-way connectors 112. The two vertical bars 1112 and the two horizontal bars 1111 are then inserted into the four three-way connectors 112 to form two interconnected frame units 11, thus completing the assembly of the box frame 1. The bottom plate 3 is installed at the bottom of the box frame 1, and the baffle 2 is installed on the side of the box frame 1. The two fire extinguishers 8 are then placed on the two bottom plates 3 respectively, thus completing the installation.

[0027] After disassembly, during storage or transportation, the separated components, such as baffle 2, can be reassembled into an easily stackable structure for improved space utilization. Figure 8 As shown.

[0028] Example 2 This embodiment is the second embodiment of the modular fire extinguisher box of this utility model. This embodiment is similar to the first embodiment, except that, as Figure 1 and Figure 5 As shown, the top of the fire extinguisher box frame 1 is equipped with a handle 4 for moving the fire extinguisher box. By pushing, pulling or lifting the handle 4, the fire extinguisher box can be moved more conveniently.

[0029] like Figure 1 and Figure 5 As shown, the handle 4 includes a control lever 41, two transmission rods 42, and a two-way connector 43. One end of each of the two transmission rods 42 is inserted into two connectors and connected to the top of two support rods 111 arranged vertically. The other end is connected to the two-way connector 43. The control lever 41 is connected between the two two-way connectors 43. The transmission rods 42 can be moved by pushing, pulling, or lifting the control lever 41, and the transmission rods 42 can move the fire extinguisher box.

[0030] like Figure 1 and Figure 6 As shown, the system also includes several connecting rods 5 and casters 6. One end of each connecting rod 5 is connected to the bottom of the frame 1, and the other end is connected to the casters 6. When the fire extinguisher box needs to be moved, it is pushed or pulled. The casters 6 convert the sliding friction between the fire extinguisher box and the ground into rolling friction, saving the force required to move the fire extinguisher box and allowing it to move in any direction. In this embodiment, the casters 6 are equipped with a brake device 62 for locking the casters 6. When the brake device 62 is activated, the casters 6 are locked and cannot rotate. After the fire extinguisher box is moved to its destination, the locking device locks the casters 6 to prevent them from rolling and to prevent the fire extinguisher box from moving on its own, thus improving the stability of the fire extinguisher box when placed.

[0031] Connecting rod 5 is a hollow tube structure, and an expansion plug 51 is installed inside connecting rod 5. The top of the caster wheel 6 is equipped with a locking screw 61, which is inserted into the expansion plug 51. Figure 6 As shown. When installing the caster wheel 6, insert the locking screw 61 at the top of the caster wheel 6 into the expansion plug 51, tighten the caster wheel 6, and rotate the locking screw 61 to expand the expansion plug 51, press it against the inner wall of the connecting rod 5, increase the friction between the expansion plug 51 and the inner wall of the connecting rod 5, and thus fix the caster wheel 6.

[0032] The bottom of the housing frame 1 is also provided with support members 7 for supporting the fire extinguisher box. Several of these support members 7 are located at the bottom of support rods 111 or connecting members on one edge of the housing frame 1. Connecting rods 5 are located at the bottom of an edge parallel to the edge where the support member 7 is located. When the fire extinguisher box needs to be moved, tilt the fire extinguisher box to lift the support members 7 off the ground. The casters 6 support the fire extinguisher box, and pushing or pulling the fire extinguisher box moves it. Figure 8As shown; after moving to the destination, the fire extinguisher box is straightened, and the support 7 is put back into contact with the ground, which supports the fire extinguisher box and increases the friction between the fire extinguisher box and the ground to prevent the fire extinguisher box from moving on its own.

[0033] In this embodiment, two transmission rods 42 are integrally connected to the top of two vertical rods 1112, and the bottom of the two vertical rods 1112 connected to the transmission rods 42 are integrally connected to two connecting rods 5. The rod body formed by connecting the transmission rods 42, connecting rods 5 and vertical rods 1112 is called the rear vertical rod. Two support members 7 are provided, and the two support members 7 are integrally connected to the bottom of the two vertical rods 1112. The rod body formed by connecting the support members 7 and vertical rods 1112 is called the front vertical rod. The two front vertical rods are located on the side of the box frame 1 away from the rear vertical rod.

[0034] In this embodiment, the box frame 1 is provided with two T-joints 112 and ten four-joints 113. Four four-joints 113 are located between the middle rod 1113 and the horizontal rod 1111. Four four-joints 113 are connected to the rear vertical rod, two four-joints 113 are connected to the front vertical rod, and two T-joints 112 are connected to the top of the front vertical rod.

[0035] The working principle of the modular fire extinguisher box in this embodiment is as follows: When moving the fire extinguisher box, close the brake device 62, pull the control lever 41 to tilt the fire extinguisher box, so that the support member 7 is off the ground, the casters 6 support the fire extinguisher box, push or pull the fire extinguisher box to move it; after moving to the destination, move the control lever 41 to straighten the fire extinguisher box, the support member 7 re-contacts the ground, supports the fire extinguisher box, and the movement of the fire extinguisher box is completed.

[0036] Example 3 This embodiment is the third embodiment of the modular fire extinguisher 8 of this utility model. This embodiment is similar to embodiment two, except that the support rod 111 is a hollow tube structure. The hollow tube structure of the support rod 111 can reduce the weight of the fire extinguisher box and reduce material costs.

[0037] like Figure 1 As shown, the support rod 111 and the connector are connected by screws 114. Connecting the support rod 111 and the connector with screws 114 simplifies installation and disassembly and ensures good connection stability.

[0038] In this embodiment, the support rod 111, the support member 7, and the operating lever 41 are square tube structures, such as... Figure 5 and Figure 9As shown; a square plug is inserted into the bottom of the support member 7 to increase the contact area between the support member and the ground and increase the friction; the support rod 111 is provided with a first mounting hole and a second mounting hole, both of which are hexagonal holes, drilled by laser. A rivet nut is installed in both the first and second mounting holes. The tee member 112, the base plate 3 and the baffle 2 are provided with through holes for the screw 114 to pass through. When installing the support rod 111, the support rod 111 is inserted into the tee member 112 or the four-way member 113, so that the through hole of the connector is aligned with the first mounting hole. The screw 114 is inserted into the rivet nut in the first mounting hole after passing through the through hole and tightened to achieve fixation; when installing the base plate 3 and the baffle 2, the through holes of the base plate 3 and the baffle 2 are aligned with the second mounting hole of the support rod 111 on the corresponding side of the box frame 1. The screw 114 is inserted into the rivet nut in the second mounting hole after passing through the through hole and tightened to fix the base plate 3 and the baffle 2 on the support rod 111. The screw 114 is installed by rivet nut, which is convenient for installation and does not require machining threads on the support rod 111, thus reducing the difficulty of machining the support rod 111.

[0039] The working principle of the modular fire extinguisher 8 in this embodiment is as follows: When assembling the box frame 1, after inserting the support rod 111 into the connector, adjust the relative position between the support rod 111 and the connector so that the through hole of the connector is aligned with the first mounting hole. After passing the screw 114 through the through hole on the connector, insert it into the rivet nut in the first mounting hole and tighten the screw 114 to securely install the support rod 111 on the connector. When installing the base plate 3 and the baffle 2, align the through holes of the base plate 3 and the baffle 2 with the second mounting holes on the vertical rod 1112 on the corresponding side of the box frame 1. After passing the screw 114 through the through hole, insert it into the rivet nut in the second mounting hole and tighten it to fix the base plate 3 and the baffle 2 on the horizontal rod 1111 and the vertical rod 1112 respectively.

[0040] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A modular fire extinguisher box, comprising a box frame (1), a baffle (2), and a base plate (3) for placing fire extinguishers (8), wherein the box frame (1) is a cubic structure, the base plate (3) is installed at the bottom of the box frame (1), and the baffle (2) is installed on the side of the box frame (1), characterized in that, The box frame (1) includes several sequentially spliced ​​frame units (11). The frame unit (11) is a cubic structure, and two adjacent frame units (11) that are spliced ​​together share four edges.

2. The modular fire extinguisher box according to claim 1, characterized in that, The frame unit (11) includes a support rod (111) and a connector. The support rod (111) is located on each edge of the frame unit (11), and the connector is located on each apex of the frame unit (11). The support rod (111) is detachably connected to the connector. The base plate (3) and the baffle (2) are detachably mounted on the support rod (111) or the connector. Two adjacent frame units (11) are connected by the connector.

3. The modular fire extinguisher box according to claim 2, characterized in that, The connectors include a three-way connector (112) and a four-way connector (113). The support rod (111) is connected to the three-way connector (112) or the four-way connector (113). The three-way connector (112) is located at the top corner of the box frame (1). Two adjacent frame units (11) are connected by the four-way connector (113).

4. The modular fire extinguisher box according to claim 2, characterized in that, The top of the box frame (1) is provided with a handle (4) for moving the fire extinguisher box.

5. The modular fire extinguisher box according to claim 4, characterized in that, The handle (4) includes a control lever (41), two transmission rods (42) and a two-way connector (43). One end of each of the two transmission rods (42) is inserted into the two connecting members and connected to the top of the two support rods (111) arranged in the vertical direction. The other end is connected to the two-way connector (43). The control lever (41) is connected between the two two-way connectors (43).

6. The modular fire extinguisher box according to claim 4, characterized in that, It also includes several connecting rods (5) and casters (6). One end of the connecting rod (5) is inserted into the connector and connected to the bottom of the support rod (111) arranged in the vertical direction, and the other end is connected to the caster (6).

7. The modular fire extinguisher box according to claim 6, characterized in that, The connecting rod (5) is a hollow tube structure, and an expansion plug (51) is installed inside the connecting rod (5). The top of the universal wheel (6) is provided with a locking screw (61), and the locking screw (61) is inserted into the expansion plug (51).

8. The modular fire extinguisher box according to claim 6, characterized in that, The bottom of the box frame (1) is also provided with a support member (7) for supporting the fire extinguisher box. Several of the support members (7) are set at the bottom of a support rod (111) or a connector located on one edge of the box frame (1). The connector (5) is set at the bottom of an edge parallel to the edge where the support member (7) is located.

9. The modular fire extinguisher box according to claim 2, characterized in that, The support rod (111) is a hollow tube structure.

10. The modular fire extinguisher box according to claim 2, characterized in that, The support rod (111) is connected to the connector by screws (114).

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