Fireproof metering box with heat dissipation structure

Abstract

The application provides a fireproof metering tank with a heat dissipation structure, which comprises a tank body, a tank cover, a fireproof strip, a heat dissipation opening and a fireproof mechanism. The tank cover is detachably installed on the tank body. The fireproof strip is installed on the tank cover and is used for sealing the gap between the tank body and the tank cover. The heat dissipation opening is arranged on the tank body. The fireproof mechanism comprises a guide assembly, a fireproof plate, two bearing assemblies and two clamping assemblies. The guide assembly is installed on the inner side of the tank body. The fireproof plate is installed on the guide assembly and can move in a first direction. The two bearing assemblies are both installed on the inner side of the tank body and can limit the fireproof plate in the first direction. The two clamping assemblies are both installed on the inner side of the tank body and are respectively clamped on the two bearing assemblies and are located on the two sides of the fireproof plate in a second direction. The fireproof metering tank with the heat dissipation structure has a heat dissipation mode and a fireproof mode, and can simultaneously consider heat dissipation and fireproofing, and has high safety performance compared with the prior art.

Description

Technical Field

[0001] This application relates to the field of power supply equipment technology, and in particular to a fireproof metering box with a heat dissipation structure. Background Technology

[0002] A metering box is a collection of necessary metering instruments and auxiliary equipment for measuring electrical energy, including electricity meters, voltage and current transformers and their secondary circuits, metering panels, cabinets, and boxes. During use, metering boxes are prone to overload, short circuits, poor contact, and equipment malfunctions, which can easily generate high-temperature electric arcs that ignite insulators, the box itself, and other flammable materials. If not extinguished promptly, the metering box can ignite surrounding flammable materials, causing the fire to spread further and posing a significant safety hazard. Therefore, in related technologies, fire-resistant sealing materials are typically filled into the gaps of the metering box to prevent the fire from spreading in the event of a fire. However, filling the gaps with fire-resistant sealing materials creates a sealed space inside the metering box, which is detrimental to ventilation and heat dissipation, also posing a safety hazard. Summary of the Invention

[0003] The purpose of this application is to provide a fireproof metering box with a heat dissipation structure to solve the technical problem that existing metering boxes cannot simultaneously achieve both fireproofing and heat dissipation.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a fireproof metering box with a heat dissipation structure, comprising: Box; The lid is detachably installed on the box body; A fireproof strip is installed on the lid of the box and is used to seal the gap between the box body and the lid; The heat dissipation vents are located in the enclosure. A fire-resistant mechanism, comprising a guide assembly, a fireproof plate, two load-bearing assemblies, and two snap-fit ​​assemblies. The guide assembly is installed inside the housing, the fireproof plate is installed on the guide assembly and is movable along a first direction, the two load-bearing assemblies are both installed inside the housing and are capable of limiting the fireproof plate along the first direction, and the two snap-fit ​​assemblies are both installed inside the housing and are respectively snapped onto the two load-bearing assemblies, and are located on both sides of the fireproof plate along a second direction. The fireproof mechanism has a heat dissipation mode in which the fireproof plate is covered by the box body, and a fireproof mode in which the fireproof plate is covered by the heat dissipation vent.

[0005] Optionally, the load-bearing assembly includes a load-bearing corner bracket, multiple load-bearing rods, a load-bearing block, multiple limiting blocks, and multiple load-bearing elastic structures. The load-bearing corner bracket is installed inside the housing and snapped into the snapping assembly. The multiple load-bearing rods pass through the load-bearing corner bracket. The load-bearing block is installed at the end of the multiple load-bearing rods and is located on the side of the load-bearing corner bracket facing the fireproof board. The multiple limiting blocks are respectively installed at the end of the multiple load-bearing rods away from the load-bearing block. The multiple load-bearing elastic structures are respectively sleeved on the multiple load-bearing rods and abut against the load-bearing corner bracket and the limiting block, and can drive the load-bearing block to move towards the load-bearing corner bracket in a second direction.

[0006] Optionally, the support block has a snap-fit ​​groove on the side facing the snap-fit ​​assembly; The snap-fit ​​assembly includes a snap-fit ​​block, a connecting frame, and multiple thermal expansion members. The snap-fit ​​block snaps into the snap-fit ​​groove, the connecting frame is installed on the snap-fit ​​block, and the multiple thermal expansion members are installed inside the housing and configured to move the connecting frame away from the support block along a first direction in the event of a fire.

[0007] Optionally, the heat-expanding component includes a mounting bracket, a mounting cylinder, a heat-conducting notch, and a first fire-resistant expansion strip. The mounting bracket is installed inside the housing, the mounting cylinder is installed on the mounting bracket, the heat-conducting notch is formed in the mounting cylinder, and the first fire-resistant expansion strip is installed inside the mounting cylinder.

[0008] Optionally, the thermal expansion member further includes a thermally conductive arc plate and two external thermally conductive plates. The thermally conductive arc plate is sleeved on the outer periphery of the first fireproof expansion strip, and the two external thermally conductive plates are respectively connected to the two ends of the thermally conductive arc plate and exposed to the outside of the mounting cylinder from the thermally conductive notch.

[0009] Optionally, the connecting frame includes a connecting rod, a connecting plate, and a plurality of push rods. The connecting rod is installed on the snap-fit ​​block, the connecting plate is installed on the end of the connecting rod away from the snap-fit ​​block, and the plurality of push rods are all installed on the connecting plate and respectively pass through the plurality of mounting cylinders.

[0010] Optionally, the snap-fit ​​assembly further includes a guide angle bracket, which is installed inside the housing. The connecting frame also includes a limiting rod, which is installed on the side of the connecting plate facing away from the connecting rod and passes through the guide angle code.

[0011] Optionally, the fireproof board includes a board body, an annular groove, and a second fireproof expansion strip. The annular groove is formed on the side of the board body facing the heat dissipation vent and is configured to surround the heat dissipation vent in fireproof mode. The second fireproof expansion strip is engaged in the annular groove.

[0012] Optionally, the guide assembly includes two mounting seats, multiple guide rods, and multiple guide elastic structures. The two mounting seats are both installed inside the housing and are respectively located on both sides of the fireproof plate along the first direction. The multiple guide rods are installed between the two mounting seats. The multiple guide elastic structures are respectively sleeved on the multiple guide rods and located on the side of the fireproof plate facing away from the bearing assembly, and abut against the fireproof plate and the mounting seats.

[0013] Optionally, the fireproof metering box with a heat dissipation structure further includes a heat dissipation device, which is installed on the outside of the box and located at the heat dissipation vent.

[0014] The beneficial effects of the fireproof metering box with a heat dissipation structure provided in this application are as follows: This application provides a fireproof metering box with a heat dissipation structure. The metering box has a heat dissipation mode and a fireproof mode. Compared with the prior art, it can simultaneously take into account heat dissipation and fire prevention, has high safety performance, can automatically close the heat dissipation vent without electronic components, and has stable and reliable operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A first-view perspective perspective view of a fireproof metering box with a heat dissipation structure provided for this application; Figure 2 A second-view perspective perspective view of a fireproof metering box with a heat dissipation structure provided for this application; Figure 3 A perspective view of the fireproof mechanism of a fireproof metering box with a heat dissipation structure provided for this application; Figure 4 A cross-sectional view of the thermal expansion component of a fireproof metering box with a heat dissipation structure provided in this application; Figure 5 A cross-sectional view of the fireproof plate of a fireproof metering box with a heat dissipation structure provided in this application.

[0017] The following are the labeling elements in the figure: 1. Box body; 2. Heat dissipation vents; 3. Fireproof mechanism; 31. Guide assembly; 311. Mounting base; 312. Guide rod; 313. Guide elastic structure; 32. Fireproof board; 321. Board body; 322. Annular groove; 323. Second fireproof expansion strip; 33. Load-bearing assembly; 331. Load-bearing angle bracket; 332. Load-bearing rod; 333. Load-bearing block; 334. Limiting block; 335. Load-bearing elastic structure; 336. Snap-fit ​​groove; 34. 341. Snap-fit ​​assembly; 342. Connecting bracket; 3421. Connecting rod; 3422. Connecting plate; 3423. Push rod; 3424. Limiting rod; 343. Thermal expansion component; 3431. Mounting bracket; 3432. Mounting cylinder; 3433. Thermally conductive notch; 3434. First fireproof expansion strip; 3435. Thermally conductive arc plate; 3436. External thermally conductive plate; 344. Guide bracket. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] It should be noted that when a component is referred to as being "mounted to," "fixed to," or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] like Figures 1 to 5As shown, this application provides a fireproof metering box with a heat dissipation structure, including a box body 1, a box cover (not shown), a fireproof strip (not shown), a heat dissipation vent 2, and a fireproof mechanism 3. The box cover is detachably installed on the box body 1. The fireproof strip is installed on the box cover and is used to seal the gap between the box body 1 and the box cover. The heat dissipation vent 2 is opened in the box body 1. The fireproof mechanism 3 includes a guide assembly 31, a fireproof plate 32, two support assemblies 33, and two snap-fit ​​assemblies 34. The guide assembly 31 is installed inside the box body 1, the fireproof plate 32 is installed on the guide assembly 31 and can move along a first direction, the two support assemblies 33 are both installed inside the box body 1 and can limit the fireproof plate 32 along the first direction, and the two snap-fit ​​assemblies 34 are both installed inside the box body 1 and respectively snap-fit ​​into the two support assemblies 33, and are located on both sides of the fireproof plate 32 along a second direction. Among them, the fireproof mechanism 3 has a heat dissipation mode in which the fireproof plate 32 is covered on the box 1, and also has a fireproof mode in which the fireproof plate 32 is covered on the heat dissipation port 2.

[0023] It should be noted that the first direction above and below refers to the bidirectional direction of the plumb line, specifically as follows: Figure 1 The X-axis is shown in the diagram. The second direction, above and below, refers to the bidirectional direction of the shortest connection between the two supporting components 33, as shown in the diagram. Figure 1 The Y-axis is shown in the figure.

[0024] This application provides a fireproof metering box with a heat dissipation structure. In the absence of a fire, two supporting components 33 are engaged with two engaging components 34. The two supporting components 33 limit the fireproof plate 32, allowing it to cover the box body 1. The heat dissipation vent 2 connects the internal and external spaces of the box body 1, facilitating heat dissipation. In the event of a fire, the two engaging components 34 detach from the two supporting components 33, and the fireproof plate 32 covers the heat dissipation vent 2, thus isolating the internal and external spaces of the metering box. This prevents the spread of fire and smoke leakage, and achieves automatic isolation without the need for electronic components, ensuring stable operation. The fireproof strip seals the gap between the box body 1 and the lid, similarly preventing the spread of fire and smoke leakage in the event of a fire inside the metering box. In summary, through the combined action of these components, the metering box possesses both heat dissipation and fire prevention modes. Compared to existing technologies, it simultaneously addresses both heat dissipation and fire prevention, resulting in high safety performance.

[0025] In one embodiment of this application, please refer to Figures 1 to 5The load-bearing component 33 includes a load-bearing angle bracket 331, multiple load-bearing rods 332, a load-bearing block 333, multiple limiting blocks 334, and multiple load-bearing elastic structures 335. The load-bearing angle bracket 331 is installed inside the housing 1 and is snapped into the snap-fit ​​component 34. Multiple load-bearing rods 332 are all inserted through the load-bearing angle bracket 331. The load-bearing block 333 is installed at the end of the multiple load-bearing rods 332 and is located on the side of the load-bearing angle bracket 331 facing the fireproof board 32. Multiple limiting blocks 334 are respectively installed at the end of the multiple load-bearing rods 332 away from the load-bearing block 333. Multiple load-bearing elastic structures 335 are respectively sleeved on the multiple load-bearing rods 332 and are all abutted between the load-bearing angle bracket 331 and the limiting blocks 334, and can drive the load-bearing block 333 to move toward the load-bearing angle bracket 331 in the second direction.

[0026] With this configuration, when the bearing block 333 is engaged with the engagement assembly 34, it can limit the fireproof plate 32 along the first direction, preventing the fireproof plate 32 from covering the heat dissipation vent 2 and effectively ensuring the heat dissipation effect of the metering box. When the engagement assembly 34 is disengaged from the bearing block 333, under the action of multiple bearing elastic structures 335, the bearing block 333 can move towards the bearing bracket 331 along the second direction, releasing the limitation on the fireproof plate 32 and allowing the fireproof plate 32 to cover the heat dissipation vent 2. Under the action of the limiting block 334, the bearing elastic structure 335 can be prevented from disengaging from the bearing rod 332, which helps to improve the structural stability between the bearing elastic structure 335 and the bearing rod 332. Under the action of the bearing elastic structure 335, the bearing block 333 can always have a tendency to move towards the bearing bracket 331 along the second direction, allowing the fireproof mechanism 3 to quickly and stably switch from the heat dissipation mode to the fireproof mode. The multiple support rods 332 and support angle brackets 331 can limit the movement of the support block 333, which helps to improve the movement stability of the support block 333 in the second direction.

[0027] Optionally, the load-bearing elastic structure 335 is configured as a spring or a sheet.

[0028] In one embodiment of this application, please refer to the following: Figures 1 to 5 The support block 333 has a snap-fit ​​groove 336 on the side facing the snap-fit ​​assembly 34. The snap-fit ​​assembly 34 includes a snap-fit ​​block 341, a connecting frame 342, and a plurality of thermal expansion members 343. The snap-fit ​​block 341 snaps into the snap-fit ​​groove 336, the connecting frame 342 is installed on the snap-fit ​​block 341, and the plurality of thermal expansion members 343 are all installed inside the housing 1 and are configured to drive the connecting frame 342 to move away from the support block 333 in a first direction in the event of a fire.

[0029] With this configuration, the connecting frame 342 and the support block 333 can be engaged by the snap-fit ​​groove 336 and the snap-fit ​​block 341. In the event of a fire, multiple thermal expansion components 343 can drive the connecting frame 342 to move away from the support block 333 along the first direction, allowing the snap-fit ​​block 341 to automatically detach from the snap-fit ​​groove 336, and the fire-resistant mechanism 3 to automatically switch from heat dissipation mode to fire-resistant mode.

[0030] In one embodiment of this application, see [reference] Figures 1 to 5 The thermal expansion component 343 includes a mounting bracket 3431, a mounting cylinder 3432, a thermally conductive notch 3433, and a first fireproof expansion strip 3434. The mounting bracket 3431 is installed inside the housing 1, the mounting cylinder 3432 is installed on the mounting bracket 3431, the thermally conductive notch 3433 is opened in the mounting cylinder 3432, and the first fireproof expansion strip 3434 is installed inside the mounting cylinder 3432.

[0031] With this configuration, in the event of a fire, heat can be quickly conducted to the first fireproof expansion strip 3434 through the heat conduction notch 3433, causing the first fireproof expansion strip 3434 to expand rapidly. This allows the snap-fit ​​block 341 to quickly detach from the snap-fit ​​groove 336, resulting in a rapid response. The fireproof mechanism 3 can quickly switch from the heat dissipation mode to the fireproof mode.

[0032] In one embodiment of this application, please refer to Figures 1 to 5 The thermal expansion member 343 also includes a thermally conductive arc plate 3435 and two external thermally conductive plates 3436. The thermally conductive arc plate 3435 is sleeved on the outer periphery of the first fireproof expansion strip 3434, and the two external thermally conductive plates 3436 are respectively connected to the two ends of the thermally conductive arc plate 3435 and exposed to the outside of the mounting cylinder 3432 from the thermally conductive notch 3433.

[0033] This configuration, with the help of the heat-conducting arc plate 3435, can wrap around the first fireproof expansion strip 3434 and guide the movement of the push rod 3423, thus improving the stability of the snap-fit ​​block 341 in the first direction. The two external heat-conducting plates 3436 increase the heat-receiving area, thereby transferring heat to the first fireproof expansion strip 3434 more quickly.

[0034] In one embodiment of this application, please refer to the following: Figures 1 to 5 The connecting frame 342 includes a connecting rod 3421, a connecting plate 3422, and a plurality of push rods 3423. The connecting rod 3421 is installed on the snap-fit ​​block 341, the connecting plate 3422 is installed on the end of the connecting rod 3421 away from the snap-fit ​​block 341, and the plurality of push rods 3423 are all installed on the connecting plate 3422 and are respectively inserted into a plurality of mounting cylinders 3432.

[0035] With this configuration, under the action of multiple push rods 3423 and guided by the heat-conducting arc plate 3435, the movement stability of the push rods 3423 in the first direction is improved. With the cooperation of the connecting rod 3421 and the connecting plate 3422, the snap-fit ​​block 341 can be stably disengaged from the bearing block 333, so that the bearing block 333 can stably release the restriction on the fireproof plate 32.

[0036] In one embodiment of this application, see [reference] Figures 1 to 5 The snap-fit ​​assembly 34 also includes a guide bracket 344, which is installed inside the housing 1. The connecting frame 342 also includes a limiting rod 3424, which is installed on the side of the connecting plate 3422 facing away from the connecting rod 3421 and passes through the guide bracket 344.

[0037] This configuration, with the help of the guide angle code 344 and the limiting rod 3424, helps to further improve the movement stability of the locking block 341 in the first direction. Furthermore, in the absence of a fire, it can limit the connection plate 3422, preventing the push rod 3423 from detaching from the mounting cylinder 3432 and causing the load-bearing component 33 to fail. This, in turn, prevents the fireproof plate 32 from covering the heat dissipation vent 2, allowing the fireproof mechanism 3 to remain stably in heat dissipation mode.

[0038] In one embodiment of this application, please refer to Figures 1 to 5 The fireproof board 32 includes a board body 321, an annular groove 322, and a second fireproof expansion strip 323. The annular groove 322 is opened on the side of the board body 321 facing the heat dissipation port 2 and is configured to surround the heat dissipation port 2 in fireproof mode. The second fireproof expansion strip 323 is engaged in the annular groove 322.

[0039] With this configuration, in fireproof mode, the second fireproof expansion strip 323 can expand from the annular groove 322 to the gap between the plate 321 and the housing 1, sealing the gap and preventing fire and smoke from leaking from the metering box. Furthermore, by positioning the annular groove 322 on the side of the plate 321 facing the heat dissipation vent 2, compared to the first fireproof expansion strip 3434 which uses a heat-conducting arc plate 3435 and an external heat-conducting plate 3436, the plate 321 conducts heat more slowly. This ensures that the second fireproof expansion strip 323 expands after the plate 321 covers the heat dissipation vent 2, preventing premature expansion of the second fireproof expansion strip 323 from affecting the movement of the plate 321 in the first direction.

[0040] In one embodiment of this application, please refer to the following: Figures 1 to 5The guide assembly 31 includes two mounting seats 311, multiple guide rods 312, and multiple guide elastic structures 313. The two mounting seats 311 are installed inside the housing 1 and are respectively located on both sides of the fireproof plate 32 along the first direction. The multiple guide rods 312 are installed between the two mounting seats 311. The multiple guide elastic structures 313 are respectively sleeved on the multiple guide rods 312 and located on the side of the fireproof plate 32 facing away from the bearing assembly 33, and abut against the fireproof plate 32 and the mounting seats 311.

[0041] With this configuration, after the support block 333 releases its restraint on the fireproof board 32, the fireproof board 32 moves towards the heat dissipation vent 2 in the first direction under the action of gravity. Multiple guide elastic structures 313 enable the fireproof board 32 to move rapidly towards the heat dissipation vent 2 in the first direction, allowing it to quickly cover the vent 2. The multiple guide rods 312 help improve the stability of the board 321's movement in the first direction, ensuring the board 321 stably covers the heat dissipation vent 2. The guide elastic structures 313 are restrained away from the mounting base 311 of the heat dissipation vent 2, preventing them from detaching from the guide rods 312. The board 321 is restrained near the mounting base 311 of the heat dissipation vent 2, preventing excessive movement that could result in the board 321 failing to cover the heat dissipation vent 2.

[0042] Optionally, the guide elastic structure 313 is configured as a spring or a sheet.

[0043] In one embodiment of this application, see [reference] Figures 1 to 5 A fireproof metering box with a heat dissipation structure also includes a heat dissipation device (not shown in the figure), which is installed on the outside of the box body 1 and located at the heat dissipation port 2.

[0044] With this setup, the metering box can be actively cooled by the heat dissipation equipment, resulting in good heat dissipation.

[0045] Optionally, the heat dissipation device may be a fan or the like.

[0046] The working principle of the fireproof metering box with a heat dissipation structure provided in this application is as follows: When no fire occurs, the snap-fit ​​block 341 snaps into the support block 333, and the two support blocks 333 can limit the plate 321 along the first direction. The heat dissipation port 2 can connect the internal space and the external space of the box 1.

[0047] In the event of a fire, heat is conducted to the first fire-resistant expansion strip 3434 via the external heat-conducting plate 3436 and the heat-conducting arc plate 3435. The first fire-resistant expansion strip 3434 expands due to heat and pushes the push rod 3423 to move away from the support block 333 along the first direction. Driven by the connecting plate 3422 and the connecting rod 3421, the locking block 341 moves away from the support block 333 along the first direction and disengages from the locking groove 336. Under the action of the load-bearing elastic structure 335, the support rod 332 drives the support block 333 to move towards the support bracket 331 along the second direction, and the support block 333 releases its restriction on the plate 321. Under the action of gravity and the guiding elastic structure 313, the plate 321 moves towards the heat dissipation port 2 along the first direction until the plate 321 contacts the mounting base 311 near the heat dissipation port 2, at which point the plate 321 can cover the heat dissipation port 2. The second fireproof expansion strip 323 expands when heated, which can prevent fire and smoke inside the box 1 from leaking out through the heat dissipation vent 2.

[0048] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A fireproof metering box with a heat dissipation structure, characterized in that, include: Box; The lid is detachably installed on the box body; A fireproof strip is installed on the lid of the box and is used to seal the gap between the box body and the lid; The heat dissipation vents are located in the enclosure. A fire-resistant mechanism, comprising a guide assembly, a fireproof plate, two load-bearing assemblies, and two snap-fit ​​assemblies. The guide assembly is installed inside the housing, the fireproof plate is installed on the guide assembly and is movable along a first direction, the two load-bearing assemblies are both installed inside the housing and are capable of limiting the fireproof plate along the first direction, and the two snap-fit ​​assemblies are both installed inside the housing and are respectively snapped onto the two load-bearing assemblies, and are located on both sides of the fireproof plate along a second direction. The fireproof mechanism has a heat dissipation mode in which the fireproof plate is covered by the box body, and a fireproof mode in which the fireproof plate is covered by the heat dissipation vent.

2. A fireproof metering box with a heat dissipation structure as described in claim 1, characterized in that, The load-bearing assembly includes a load-bearing corner bracket, multiple load-bearing rods, a load-bearing block, multiple limiting blocks, and multiple load-bearing elastic structures. The load-bearing corner bracket is installed inside the housing and snapped into the snapping assembly. The multiple load-bearing rods are all inserted through the load-bearing corner bracket. The load-bearing block is installed at the end of the multiple load-bearing rods and is located on the side of the load-bearing corner bracket facing the fireproof board. The multiple limiting blocks are respectively installed at the end of the multiple load-bearing rods away from the load-bearing block. The multiple load-bearing elastic structures are respectively sleeved on the multiple load-bearing rods and abut against the load-bearing corner bracket and the limiting block, and can drive the load-bearing block to move towards the load-bearing corner bracket in a second direction.

3. A fireproof metering box with a heat dissipation structure as described in claim 2, characterized in that, The support block has a snap-fit ​​groove on the side facing the snap-fit ​​assembly; The snap-fit ​​assembly includes a snap-fit ​​block, a connecting frame, and multiple thermal expansion members. The snap-fit ​​block snaps into the snap-fit ​​groove, the connecting frame is installed on the snap-fit ​​block, and the multiple thermal expansion members are installed inside the housing and configured to move the connecting frame away from the support block along a first direction in the event of a fire.

4. A fireproof metering box with a heat dissipation structure as described in claim 3, characterized in that, The heat-expanding component includes a mounting bracket, a mounting cylinder, a heat-conducting notch, and a first fire-resistant expansion strip. The mounting bracket is installed inside the housing, the mounting cylinder is installed on the mounting bracket, the heat-conducting notch is formed in the mounting cylinder, and the first fire-resistant expansion strip is installed inside the mounting cylinder.

5. A fireproof metering box with a heat dissipation structure as described in claim 4, characterized in that, The thermal expansion member further includes a thermally conductive arc plate and two external thermally conductive plates. The thermally conductive arc plate is sleeved on the outer periphery of the first fireproof expansion strip, and the two external thermally conductive plates are respectively connected to the two ends of the thermally conductive arc plate and exposed to the outside of the mounting cylinder from the thermally conductive notch.

6. A fireproof metering box with a heat dissipation structure as described in claim 4, characterized in that, The connecting frame includes a connecting rod, a connecting plate, and multiple push rods. The connecting rod is installed on the snap-fit ​​block, the connecting plate is installed on the end of the connecting rod away from the snap-fit ​​block, and the multiple push rods are all installed on the connecting plate and respectively pass through the multiple mounting cylinders.

7. A fireproof metering box with a heat dissipation structure as described in claim 6, characterized in that, The snap-fit ​​assembly also includes a guide angle bracket, which is installed inside the housing. The connecting frame also includes a limiting rod, which is installed on the side of the connecting plate facing away from the connecting rod and passes through the guide angle code.

8. A fireproof metering box with a heat dissipation structure as described in claim 1, characterized in that, The fireproof board includes a board body, an annular groove, and a second fireproof expansion strip. The annular groove is formed on the side of the board body facing the heat dissipation vent and is configured to surround the heat dissipation vent in fireproof mode. The second fireproof expansion strip is engaged in the annular groove.

9. A fireproof metering box with a heat dissipation structure as described in claim 1, characterized in that, The guiding assembly includes two mounting seats, multiple guide rods, and multiple guiding elastic structures. The two mounting seats are both installed inside the housing and are respectively located on both sides of the fireproof plate along the first direction. The multiple guide rods are installed between the two mounting seats. The multiple guiding elastic structures are respectively sleeved on the multiple guide rods and located on the side of the fireproof plate facing away from the bearing assembly, and abut against the fireproof plate and the mounting seats.

10. A fireproof metering box with a heat dissipation structure as described in claim 1, characterized in that, The fireproof metering box with a heat dissipation structure also includes a heat dissipation device, which is installed on the outside of the box and located at the heat dissipation vent.

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