Distribution box with circuit protection function

Abstract

The invention belongs to the technical field of intelligent distribution boxes, and particularly relates to a distribution box with a circuit protection function, which comprises a box body, a master control switch is fixedly mounted on the inner wall of the box body, a leakage current sensor is fixedly mounted at the top of the master control switch, and a temperature sensor is fixedly mounted on the inner wall of the box body. A processor is fixedly installed on the inner wall of the box body, the leakage current sensor and the temperature sensor are both electrically connected with the signal input end of the processor, a hinge seat is arranged on one side of the master control switch, and an extrusion plate is rotatably installed on the inner wall of the hinge seat. When the internal environment of the box body is abnormal, the leakage current sensor and the temperature sensor can transmit abnormal signals to the processor, and the processor immediately enables the extrusion plate to move downwards to extrude the master control switch to cut off a power supply after receiving the signals, thereby effectively preventing the expansion of an electric leakage accident and the danger such as a fire caused by high temperature. Safety of personnel and equipment is guaranteed to the greatest extent, and an effective intelligent protection mechanism is provided for the circuit.

Description

Technical Field

[0001] This invention belongs to the field of intelligent distribution box technology, specifically a distribution box with circuit protection function. Background Technology

[0002] A distribution box is a device specifically designed for distributing electrical energy. It is widely used in various buildings and industrial sites. By distributing electrical energy to various electrical devices or circuits, it ensures the safe and efficient operation of the power system. The distribution box typically contains a variety of electrical components such as switches, circuit breakers, fuses, contactors, relays, and capacitors. These components work together to achieve the distribution, control, protection, and monitoring of electrical energy.

[0003] Most existing distribution boxes are designed with a focus on basic power distribution and control functions, and do not adequately consider the impact of external environmental factors on internal circuit components. They generally lack effective intelligent protection mechanisms and cannot automatically protect the circuit in the event of leakage or short circuit. In the actual operating environment of distribution boxes, moisture often enters the interior of the distribution box due to various factors such as installation location, building structure, or climate conditions. In such cases, leakage can easily occur, thereby causing a fire.

[0004] Therefore, the present invention provides a distribution box with circuit protection function. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: A distribution box with circuit protection function according to the present invention includes a box body, a main control switch is fixedly installed on the inner wall of the box body, a leakage current sensor is fixedly installed on the top of the main control switch, a temperature sensor is fixedly installed on the inner wall of the box body, a processor is fixedly installed on the inner wall of the box body, the leakage current sensor and the temperature sensor are both electrically connected to the signal input terminal of the processor, a hinge seat is provided on one side of the main control switch, a pressing plate is rotatably installed on the inner wall of the hinge seat, a torsion spring shaft is installed between the pressing plate and the hinge seat, and a drive assembly is provided on one side of the hinge seat.

[0007] Preferably, the drive assembly includes a mounting base fixedly installed on the inner wall of the housing, a traveling screw rotatably mounted between the mounting base and the inner wall of the housing, a drive motor fixedly installed on the top of the housing, the output end of the drive motor being fixedly connected to one end of the traveling screw, a lifting plate being installed on the outer wall of the traveling screw, and a hinged seat being fixedly installed on the outer wall of the lifting plate.

[0008] Preferably, heat dissipation windows are provided on both sides of the box, and two sets of limiting slides are symmetrically fixedly installed on the inner wall of the box. A sealing baffle is slidably installed between each set of limiting slides and the box, and a pulling component is provided below the lifting plate.

[0009] Preferably, the pulling assembly includes two extension plates, which are symmetrically and fixedly installed at the bottom of the lifting plate. Fireproof connecting ropes are fixedly installed on the opposite sides of the extension plates. The ends of the two fireproof connecting ropes away from the extension plates are respectively fixedly connected to two sealing baffles. Guide wheels are symmetrically and fixedly installed on the inner wall of the box, and the two fireproof connecting ropes overlap the outer wall of the guide wheels.

[0010] Preferably, a carbon dioxide containment box is symmetrically fixedly installed on the inner wall of the top of the box body, and a carbon dioxide emission box is slidably installed on the inner wall of the carbon dioxide containment box. An air inlet groove is opened on the top of the carbon dioxide emission box, and a number of exhaust inclined holes are symmetrically opened on the outer wall of the carbon dioxide emission box. All the exhaust inclined holes are connected to the air inlet groove. The exhaust inclined holes are located on the inner side of the carbon dioxide containment box, and an elastic component is provided between the carbon dioxide emission box and the carbon dioxide containment box.

[0011] Preferably, the elastic component includes a limiting plate, which is fixedly installed on the outer wall of the carbon dioxide emission box. Several protrusions are fixedly installed on the top of the inner wall of the carbon dioxide container. An elastic element A is fixedly installed between each protrusion and the limiting plate. Connecting plates are symmetrically fixedly installed on the outer wall of the lifting plate. A stop plate is fixedly installed at the end of the connecting plate away from the lifting plate. The top of the stop plate abuts against the bottom of the carbon dioxide emission box and is in contact with the bottom of the carbon dioxide container.

[0012] Preferably, the bottom of the inner wall of the housing is symmetrically and rotatably mounted with a rotating shaft, and a fan is fixedly mounted at one end of each rotating shaft. Circuit elements are fixedly mounted on the inner wall of the housing, and the circuit elements are located above the fans. The surface of the traveling screw is provided with a smooth section and a threaded section. The lifting plate is located at the smooth section of the traveling screw. A transmission assembly is provided between the rotating shaft and the traveling screw.

[0013] Preferably, the transmission assembly includes a drive wheel, which is fixedly mounted on the outer wall of the traveling screw, and driven wheels are fixedly mounted on the outer wall of each rotating shaft. A transmission belt is installed between each driven wheel and the drive wheel.

[0014] Preferably, a lower pressure plate is provided on the top of the lifting plate, and a plurality of elastic elements B are fixedly installed between the lower pressure plate and the mounting base. A plurality of limiting sliding columns are fixedly installed on the top of the lower pressure plate, and the outer walls of the limiting sliding columns are slidably connected to the inner wall of the mounting base.

[0015] Preferably, a top protective plate is fixedly installed on the top of the box, and a door is hinged to the outer wall of the box.

[0016] The beneficial effects of this invention are as follows: 1. The distribution box with circuit protection function described in this invention, when an abnormality occurs in the internal environment of the box, the leakage current sensor and temperature sensor will transmit the abnormal signal to the processor. After receiving the signal, the processor will immediately control the drive component to move the hinge seat downward. When the hinge seat moves downward, it will drive the compression plate downward through the torsion spring shaft. When the compression plate moves downward, it will squeeze the main control switch, thereby turning off the main control switch and cutting off the power supply. This effectively prevents the expansion of leakage accidents and dangers such as fires caused by high temperatures, and maximizes the safety of personnel and equipment, providing an effective intelligent protection mechanism for the circuit.

[0017] 2. The distribution box with circuit protection function described in this invention, when the temperature sensor detects a fire inside the box, the lifting plate drives two sealing baffles to rise through the pulling component, blocking the heat dissipation windows on both sides, thereby sealing the inside of the box. After the box is sealed, it can prevent outside air from entering, avoid oxygen to fuel combustion, suppress the further spread and expansion of the fire, buy time for fire extinguishing measures, reduce the losses caused by the fire, and at the same time prevent the smoke and harmful gases generated by the fire from spreading to the surrounding environment, protect personnel safety and reduce the impact on the surrounding environment, and provide strong protection for the safe operation of the distribution box.

[0018] 3. The distribution box with circuit protection function described in this invention, when the temperature sensor detects a fire inside the box, the lifting plate descends to seal the box. At the same time, the lifting plate, through the elastic component, allows carbon dioxide inside the carbon dioxide container to enter the inner side of the air inlet slot and be discharged through the exhaust oblique hole, thereby controlling the fire. Since the inside of the box is already sealed at this time, the discharged carbon dioxide will be distributed inside the box, forming a relatively closed and carbon dioxide-filled fire extinguishing environment inside the box, further enhancing the fire extinguishing effect and providing reliable fire protection for the distribution box. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the box of the present invention; Figure 3 This is a cross-sectional view of the box structure of the present invention; Figure 4 This is a schematic diagram of the mounting base structure of the present invention; Figure 5 This is an enlarged view of a partial structure of the mounting base of the present invention; Figure 6 This is a schematic diagram of the main control switch of the present invention; Figure 7 This is a schematic diagram of the structure of the lifting plate of the present invention; Figure 8 This is a schematic diagram of the structure of the carbon dioxide containment box of the present invention; Figure 9 This is a cross-sectional view of the carbon dioxide containment tank structure of the present invention; Figure 10 This is a schematic diagram of the structure of the carbon dioxide emission box of the present invention; Figure 11 This is a schematic diagram of the fan structure of the present invention.

[0021] In the diagram: 1. Housing; 2. Main control switch; 3. Leakage current sensor; 4. Temperature sensor; 5. Hinge seat; 6. Extrusion plate; 7. Torsion spring shaft; 8. Mounting seat; 9. Traveling screw; 10. Drive motor; 11. Lifting plate; 12. Heat dissipation window; 13. Limiting slide; 14. Sealing baffle; 15. Extension plate; 16. Fireproof connecting rope; 17. Guide wheel; 18. Carbon dioxide containment box; 19. Carbon dioxide emission box; 20. Air inlet slot; 21. Exhaust oblique hole; 22. Limiting plate; 23. Protrusion; 24. Elastic element A; 25. Connecting plate; 26. Support plate; 27. Rotating shaft; 28. Fan; 29. ​​Circuit component; 30. Drive wheel; 31. Driven wheel; 32. Transmission belt; 33. Lower pressure plate; 34. Elastic element B; 35. Limiting slide column; 36. Top protective plate; 37. Door. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 7As shown in the embodiment of the present invention, a distribution box with circuit protection function includes a box body 1. A main control switch 2 is fixedly installed on the inner wall of the box body 1. A leakage current sensor 3 is fixedly installed on the top of the main control switch 2. A temperature sensor 4 is fixedly installed on the inner wall of the box body 1. A processor is fixedly installed on the inner wall of the box body 1. The leakage current sensor 3 and the temperature sensor 4 are both electrically connected to the signal input terminal of the processor. A hinge seat 5 is provided on one side of the main control switch 2. A pressing plate 6 is rotatably installed on the inner wall of the hinge seat 5. A torsion spring shaft 7 is installed between the pressing plate 6 and the hinge seat 5. A drive assembly is provided on one side of the hinge seat 5. When the distribution box is working normally, the leakage current sensor 3 and the temperature sensor 4 monitor the internal environment of the box body 1 in real time, which can simultaneously capture two common electrical hazard signals: leakage current and abnormal temperature, providing more comprehensive data support for circuit protection. When an abnormality occurs in the internal environment of the box body 1, the leakage current sensor 3 and the temperature sensor 4 will transmit the abnormal signal. The signal is sent to the processor. Upon receiving the signal, the processor immediately controls the drive assembly to move the hinge seat 5 downwards. As the hinge seat 5 moves downwards, it drives the pressing plate 6 downwards via the torsion spring shaft 7. When the pressing plate 6 moves downwards, it presses the main control switch 2, thereby turning off the main control switch 2 and cutting off the power supply. This effectively prevents the spread of leakage accidents and dangers such as fires caused by high temperatures, maximizing the safety of personnel and equipment and providing an effective intelligent protection mechanism for the circuit. When the main control switch 2 is turned off, the torsion spring shaft 7 absorbs some of the impact force when the pressing plate 6 contacts the main control switch 2, reducing the damage of mechanical vibration to the main control switch 2. In addition, when the pressing plate 6 presses the main control switch 2, the rotation of the torsion spring shaft 7 keeps the pressing plate 6 pressing the main control switch 2, preventing the main control switch 2 from rebounding. This ensures that the main control switch 2 is effectively turned off, ensuring that the contacts are completely separated, and avoiding incomplete contact disconnection due to mechanical errors or wear, which could lead to arcing, short circuits, or equipment damage.

[0024] like Figures 1 to 5 As shown, the drive assembly includes a mounting base 8 fixedly installed on the inner wall of the housing 1. A traveling screw 9 is rotatably installed between the mounting base 8 and the inner wall of the housing 1. A drive motor 10 is fixedly installed on the top of the housing 1. The output end of the drive motor 10 is fixedly connected to one end of the traveling screw 9. A lifting plate 11 is installed on the outer wall of the traveling screw 9. A hinge seat 5 is fixedly installed on the outer wall of the lifting plate 11. When the processor controls the drive assembly to start, the drive motor 10 will drive the traveling screw 9 to rotate. When the traveling screw 9 rotates, it will descend along the mounting base 8 through the threaded engagement with the lifting plate 11. When the lifting plate 11 descends, it will drive the hinge seat 5 to descend, thereby providing power for the extrusion plate 6 to close the master control switch 2. The rotation of the traveling screw 9 can accurately control the descent distance and speed of the lifting plate 11, thereby ensuring that the extrusion plate 6 closes the master control switch 2 with appropriate force and timing, improving the accuracy and reliability of circuit protection.

[0025] like Figures 1 to 6 As shown, ventilation windows 12 are provided on both sides of the enclosure 1. Two sets of limiting slides 13 are symmetrically fixedly installed on the inner wall of the enclosure 1. A sealing baffle 14 is slidably installed between each set of limiting slides 13 and the enclosure 1. A pulling component is provided below the lifting plate 11. When the distribution box is in normal use, the ventilation windows 12 on both sides of the enclosure 1 allow air to circulate inside the enclosure 1, thereby effectively removing the heat generated by the electrical components inside the enclosure 1, maintaining a suitable working temperature, and ensuring the stable operation of the equipment. When the temperature sensor 4 detects a fire inside the enclosure 1, the lifting plate 11 will descend and close the main control switch 2, and will continue to operate. As the lifting plate 11 descends, the compression plate 6 passes over the main control switch 2 via the torsion spring shaft 7. As the lifting plate 11 continues to descend, it will drive the two sealing baffles 14 to rise through the pulling component, blocking the heat dissipation windows 12 on both sides. This seals the interior of the box 1, preventing outside air from entering, avoiding oxygen-assisted combustion, suppressing the further spread and expansion of the fire, buying time for firefighting measures, reducing the losses caused by the fire, and preventing smoke and harmful gases generated by the fire from spreading to the surrounding environment. This protects personnel safety and reduces the impact on the surrounding environment, providing strong protection for the safe operation of the distribution box.

[0026] like Figures 3 to 6 As shown, the pulling assembly includes two extension plates 15, which are symmetrically fixedly installed at the bottom of the lifting plate 11. Fireproof connecting ropes 16 are fixedly installed on the opposite sides of the extension plates 15. The ends of the two fireproof connecting ropes 16 away from the extension plates 15 are respectively fixedly connected to two sealing baffles 14. Guide wheels 17 are symmetrically fixedly installed on the inner wall of the housing 1, and the two fireproof connecting ropes 16 overlap the outer wall of the guide wheels 17. When the sealing baffles 14 descend, they will drive the extension plates 15 to descend. When the extension plates 15 descend, they will pull the fireproof connecting ropes 16. Since one end of the fireproof connecting rope 16 is connected to the sealing baffles 14, the fireproof connecting ropes 16 will pull the sealing baffles 14 to move. Because the fireproof connecting ropes 16 are guided by the guide wheels 17, they will pull the sealing baffles 14 to move vertically upward, thereby achieving the sealing effect of the sealing baffles 14 on the heat dissipation window 12.

[0027] like Figures 1 to 3 and Figures 8 to 10As shown, a carbon dioxide containment box 18 is symmetrically fixedly installed on the inner wall of the top of the box 1. A carbon dioxide emission box 19 is slidably installed on the inner wall of the carbon dioxide containment box 18. An air inlet slot 20 is opened on the top of the carbon dioxide emission box 19. Several exhaust oblique holes 21 are symmetrically opened on the outer wall of the carbon dioxide emission box 19. All exhaust oblique holes 21 are connected to the air inlet slot 20. The exhaust oblique holes 21 are located inside the carbon dioxide containment box 18. An elastic component is provided between the carbon dioxide emission box 19 and the carbon dioxide containment box 18. When the temperature sensor 4 detects a fire inside the box 1, the lifting plate 11 will continue to descend to seal the box 1 after closing the main control switch 2. While the lifting plate 11 is sealing the box 1, the lifting plate 11 will slide the carbon dioxide emission box 19 out from the inside of the carbon dioxide containment box 18 through the elastic component, and move the exhaust oblique holes 21 to the outside of the carbon dioxide containment box 18. At this time, the carbon dioxide inside the carbon dioxide containment box 18 enters the inside of the air inlet slot 20 and is discharged through the exhaust oblique holes 21. The carbon dioxide is discharged through the inclined air hole 21 to control the fire. Since the inside of the box 1 is sealed at this time, the discharged carbon dioxide will be distributed inside the box 1, forming a relatively closed and carbon dioxide-filled fire extinguishing environment inside the box 1, which further enhances the fire extinguishing effect and provides reliable fire protection for the distribution box. Through the setting of the air inlet slot 20 and the inclined air outlet 21, the carbon dioxide discharge has a certain directionality and diffusion. The discharged carbon dioxide can be evenly distributed inside the box 1, quickly reducing the oxygen content of the box 1 and achieving the effect of suffocation fire extinguishing. It should be noted that when the leakage current sensor 3 detects leakage, the device will only close the main control switch 2. When the temperature sensor 4 detects an abnormality, the device will close the main control switch 2, seal the box 1, and spray carbon dioxide to prevent the sealing and carbon dioxide spraying from being triggered by leakage alone, which would cause heat accumulation inside the sealed box 1 and cause secondary overheating. Excessive carbon dioxide waste requires regular replenishment, and frequent use is uneconomical.

[0028] like Figures 8 to 10As shown, the elastic component includes a limiting plate 22, which is fixedly installed on the outer wall of the carbon dioxide emission box 19. Several protrusions 23 are fixedly installed on the top of the inner wall of the carbon dioxide container 18. Elastic elements A24 are fixedly installed between the protrusions 23 and the limiting plate 22. Connecting plates 25 are symmetrically fixedly installed on the outer wall of the lifting plate 11. A stop plate 26 is fixedly installed at the end of the connecting plate 25 away from the lifting plate 11. The tops of the stop plates 26 abut against the bottom of the carbon dioxide emission box 19 and the bottoms of the carbon dioxide container 18, respectively. Initially, the stop plates 26 remain in contact with the carbon dioxide emission box 19, and the elastic elements A24 are in a compressed state. When the lifting plate 11 descends, it will drive the stop plate 26 to descend through the connecting plate 25. After the stop plate 26 descends, it will separate from the carbon dioxide emission box 19. Since the carbon dioxide emission box 19 is no longer restricted by the stop plate 26, the elastic force of the elastic element A24 is released, thereby pushing the carbon dioxide emission box 19 to move down and extend from the bottom of the carbon dioxide container box 18, thus realizing the carbon dioxide injection operation. It should be noted that when the lifting plate 11 descends to the point where the main control switch 2 is closed, although the carbon dioxide emission box 19 will extend from the bottom of the carbon dioxide container box 18, the exhaust oblique hole 21 does not reach the outside of the carbon dioxide container box 18, so carbon dioxide will not be injected at this time.

[0029] like Figures 3 to 4 and Figure 11As shown, a rotating shaft 27 is symmetrically mounted on the bottom of the inner wall of the housing 1. A fan 28 is fixedly mounted on one end of each rotating shaft 27. A circuit element 29 is fixedly mounted on the inner wall of the housing 1, located above the fan 28. The surface of the traveling screw 9 is provided with a smooth section and a threaded section. The lifting plate 11 is located at the smooth section of the traveling screw 9. A transmission assembly is provided between the rotating shaft 27 and the traveling screw 9. The surface of the traveling screw 9 is provided with a smooth section and a threaded section, and the lifting plate 11 is located at the smooth section. Therefore, when the drive motor 10 drives the traveling screw 9 to reverse, the lifting plate 11 will not move. When the distribution box is in normal use, the drive motor 10 will drive the traveling screw 9 to reverse. When the traveling screw 9 reverses, it will drive the rotating shaft 27 to rotate through the transmission assembly. When the rotating shaft 27 rotates, it will... The fan 28 is driven to rotate. Since the circuit element 29 is located above the fan 28, the airflow generated by the fan 28 will blow towards the circuit element 29, which can effectively remove the heat generated by the circuit element 29 during operation, improve heat dissipation efficiency, ensure that the circuit element 29 works in a suitable temperature environment, and extend its service life. The lifting plate 11 is located in the smooth section of the traveling screw 9. However, since the elastic element A24 is in a compressed state, the reverse elastic force of the elastic element A24 will squeeze the lifting plate 11 to make it fit with the threaded section of the traveling screw 9. Therefore, when the traveling screw 9 is rotating in the forward direction, the lifting plate 11 can quickly respond and move down. It should be noted that although the fan 28 will also rotate when the traveling screw 9 is rotating in the forward direction, the rotation speed is slow and the time is short, so it will not affect the fire.

[0030] like Figure 11 As shown, the transmission assembly includes a drive wheel 30, which is fixedly mounted on the outer wall of the traveling screw 9. Driven wheels 31 are fixedly mounted on the outer wall of the rotating shaft 27. A transmission belt 32 is installed between the driven wheels 31 and the drive wheel 30. When the traveling screw 9 rotates, it drives the drive wheel 30 to rotate. When the drive wheel 30 rotates, it drives the driven wheel 31 to rotate through the transmission belt 32. Since the driven wheel 31 is fixed on the rotating shaft 27, the rotating shaft 27 will rotate together with the driven wheel 31, thereby providing power for the rotation of the fan 28.

[0031] like Figure 5As shown, a lower pressure plate 33 is provided on the top of the lifting plate 11. Several elastic elements B34 are fixedly installed between the lower pressure plate 33 and the mounting base 8. Several limiting slides 35 are fixedly installed on the top of the lower pressure plate 33. The outer walls of the limiting slides 35 are all slidably connected to the inner wall of the mounting base 8. When the elastic elements B34 are in a compressed state, the lower pressure plate 33 presses the lifting plate 11 through the action of the elastic elements B34, further making the lifting plate 11 fit with the threaded section of the traveling screw 9. This ensures that when the traveling screw 9 is in forward transmission, the lifting plate 11 can immediately and tightly engage with the threaded section, thereby achieving a rapid response and timely initiation of the descent action. The guiding effect of the limiting slides 35 ensures the stability of the lower pressure plate 33 during the movement, thereby ensuring the stable fit between the lifting plate 11 and the threaded section of the traveling screw 9. Even if the equipment is subjected to vibration or external force interference during operation, the lifting plate 11 can always remain in the correct position without loosening or detaching, thus improving the reliability and stability of the transmission.

[0032] like Figure 1 As shown, a top protective plate 36 is fixedly installed on the top of the enclosure 1, and a door 37 is hinged to the outer wall of the enclosure 1. The top protective plate 36 can effectively block rainwater from directly hitting the enclosure 1, preventing rainwater from seeping into the interior and causing faults such as short circuits. At the same time, it can also buffer and block debris that may fall from above, such as branches and small stones, protecting the structure of the enclosure 1 from damage. The door 37 provides a passage for staff to enter the interior of the enclosure 1 for operation, inspection and maintenance. By opening the door 37, it is convenient to inspect, replace or debug the inside of the enclosure to ensure the normal operation of the distribution box.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distribution box with circuit protection function, comprising a box body (1), characterized in that: A master control switch (2) is fixedly installed on the inner wall of the housing (1). A leakage current sensor (3) is fixedly installed on the top of the master control switch (2). A temperature sensor (4) is fixedly installed on the inner wall of the housing (1). A processor is fixedly installed on the inner wall of the housing (1). The leakage current sensor (3) and the temperature sensor (4) are both electrically connected to the signal input terminal of the processor. A hinge seat (5) is provided on one side of the master control switch (2). A pressing plate (6) is rotatably installed on the inner wall of the hinge seat (5). A torsion spring shaft (7) is installed between the pressing plate (6) and the hinge seat (5). A drive assembly is provided on one side of the hinge seat (5).

2. A distribution box with circuit protection function according to claim 1, characterized in that: The drive assembly includes a mounting base (8) fixedly installed on the inner wall of the housing (1), a traveling screw (9) rotatably installed between the mounting base (8) and the inner wall of the housing (1), a drive motor (10) fixedly installed on the top of the housing (1), the output end of the drive motor (10) being fixedly connected to one end of the traveling screw (9), a lifting plate (11) installed on the outer wall of the traveling screw (9), and a hinge seat (5) fixedly installed on the outer wall of the lifting plate (11).

3. A distribution box with circuit protection function according to claim 2, characterized in that: The box (1) has heat dissipation windows (12) on both sides. Two sets of limiting slides (13) are symmetrically fixed on the inner wall of the box (1). Each set of limiting slides (13) is slidably installed with a sealing baffle (14) between it and the box (1). A pulling component is provided below the lifting plate (11).

4. A distribution box with circuit protection function according to claim 3, characterized in that: The pulling assembly includes two extension plates (15), which are symmetrically fixedly installed at the bottom of the lifting plate (11). Fireproof connecting ropes (16) are fixedly installed on the side of the extension plates (15) that are far apart from each other. The ends of the two fireproof connecting ropes (16) that are far away from the extension plates (15) are respectively fixedly connected to two sealing baffles (14). Guide wheels (17) are symmetrically fixedly installed on the inner wall of the box (1), and the two fireproof connecting ropes (16) are respectively attached to the outer wall of the guide wheels (17).

5. A distribution box with circuit protection function according to claim 4, characterized in that: A carbon dioxide containment box (18) is symmetrically fixedly installed on the inner wall of the top of the box (1). A carbon dioxide emission box (19) is slidably installed on the inner wall of the carbon dioxide containment box (18). An air inlet groove (20) is opened on the top of the carbon dioxide emission box (19). Several exhaust oblique holes (21) are symmetrically opened on the outer wall of the carbon dioxide emission box (19). All exhaust oblique holes (21) are connected to the air inlet groove (20). The exhaust oblique holes (21) are located inside the carbon dioxide containment box (18). An elastic component is provided between the carbon dioxide emission box (19) and the carbon dioxide containment box (18).

6. A distribution box with circuit protection function according to claim 5, characterized in that: The elastic component includes a limiting plate (22), which is fixedly installed on the outer wall of the carbon dioxide emission box (19). Several protrusions (23) are fixedly installed on the top of the inner wall of the carbon dioxide container (18). An elastic element A (24) is fixedly installed between the protrusions (23) and the limiting plate (22). A connecting plate (25) is symmetrically fixedly installed on the outer wall of the lifting plate (11). A stop plate (26) is fixedly installed at the end of the connecting plate (25) away from the lifting plate (11). The top of the stop plate (26) abuts against the bottom of the carbon dioxide emission box (19) and the top of the stop plate (26) fits against the bottom of the carbon dioxide container (18).

7. A distribution box with circuit protection function according to claim 6, characterized in that: The bottom of the inner wall of the housing (1) is symmetrically mounted with a rotating shaft (27). A fan (28) is fixedly mounted on one end of the rotating shaft (27). A circuit element (29) is fixedly mounted on the inner wall of the housing (1). The circuit element (29) is located above the fan (28). The surface of the traveling screw (9) is provided with a smooth section and a threaded section. The lifting plate (11) is located at the smooth section of the traveling screw (9). A transmission component is provided between the rotating shaft (27) and the traveling screw (9).

8. A distribution box with circuit protection function according to claim 7, characterized in that: The transmission assembly includes a drive wheel (30), which is fixedly installed on the outer wall of the traveling screw (9). Driven wheels (31) are fixedly installed on the outer wall of the rotating shaft (27). A transmission belt (32) is installed between the driven wheel (31) and the drive wheel (30).

9. A distribution box with circuit protection function according to claim 8, characterized in that: The top of the lifting plate (11) is provided with a lower pressure plate (33), and a number of elastic elements B (34) are fixedly installed between the lower pressure plate (33) and the mounting base (8). A number of limiting slide columns (35) are fixedly installed on the top of the lower pressure plate (33), and the outer walls of the limiting slide columns (35) are slidably connected to the inner wall of the mounting base (8).

10. A distribution box with circuit protection function according to claim 9, characterized in that: A top protective plate (36) is fixedly installed on the top of the box (1), and a door (37) is hinged to the outer wall of the box (1).

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