Automatic early warning distribution box

Abstract

The invention relates to the technical field of distribution boxes, and discloses an automatic early warning distribution box which comprises a box body, a sliding cylinder and a clamping box are fixed to the inner wall of the box body, a piston rod slides in the sliding cylinder, a second electrode contact is fixed to the upper side of one end of the piston rod, and cooling fans are arranged on the two sides of the box body. A fixing rod is fixed to one side of the baffle, a rotating rod is fixed to one side of the fixing rod, a rotating ring is rotationally connected to the outer wall of the rotating rod, a balance weight contact is fixedly connected to the lower side of the rotating ring, and clamping strips are fixed to the outer wall of the rotating ring and the outer wall of the fixing rod. Through a sliding cylinder, a piston rod, a clamping strip, a clamping groove, a second electrode contact, a balance weight contact and a cooling fan, the problems that when a temperature sensor is damaged, temperature detection in the distribution box cannot accurately reflect the actual temperature inside the distribution box, heat cannot be effectively dissipated, and then the situation of overheating or even fire disasters can be possibly caused are solved.

Description

Technical Field

[0001] This invention relates to the field of distribution box technology, specifically to an automatic early warning distribution box. Background Technology

[0002] Distribution boxes are widely used in industries such as power and construction. They are mainly used to distribute electrical energy and are characterized by small size, easy installation, special technical performance, fixed location, unique configuration functions, no site restrictions, wide application, stable and reliable operation, high space utilization, small footprint, and environmental benefits.

[0003] Existing distribution boxes typically use temperature sensors to detect the temperature of the distribution box during use, and then trigger cooling and feedback. However, these sensors are susceptible to external environmental influences. When the temperature sensor is damaged, the temperature monitoring inside the distribution box cannot accurately reflect the actual internal temperature, making it impossible to dissipate heat effectively. This can lead to overheating or even a fire. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic early warning distribution box, which solves the problem that when the temperature sensor is damaged, the temperature detection inside the distribution box cannot accurately reflect the actual internal temperature, making it impossible to dissipate heat effectively, which may lead to overheating or even a fire.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic early warning distribution box, comprising a box body, a sliding cylinder and a card box fixed to the inner wall of the box body, a temperature sensor fixed to the outer wall of the sliding cylinder, a piston rod sliding inside the sliding cylinder, an electrode contact two fixed to the upper side of one end of the piston rod, cooling fans provided on both sides of the box body, a baffle provided at the lower part of one of the cooling fans, a fixed rod fixed to one side of the baffle, a rotating rod fixed to one side of the fixed rod, a rotating ring rotatably connected to the outer wall of the rotating rod, a counterweight contact fixedly connected to the lower side of the rotating ring, the outer wall of the counterweight contact slidingly connected to the outer wall of the electrode contact two, the outer wall of the rotating ring passing through one side of the card box, a retaining strip fixed to the outer walls of both the rotating ring and the fixed rod, a retaining groove with an interference fit to the retaining strip on the card box, and a third spring fixed between the fixed rod and the inner wall of the box body.

[0006] The above technical solution achieves the following: When the temperature sensor is intact, it triggers the cooling fan to turn on. The fan's airflow moves the baffle and causes the counterweight contact and piston rod to misalign, thus enabling the distribution box to dissipate heat when the temperature sensor is intact. When the temperature sensor is damaged, the cooling fan cannot be triggered to rotate. The piston rod pushes the counterweight contact to rotate, causing the locking strip and slot to misalign. When the counterweight contact slides to electrode contact two on the piston rod, the cooling fan starts to dissipate heat. This solves the problem that when the temperature sensor is damaged, the temperature monitoring inside the distribution box cannot accurately reflect the actual internal temperature, resulting in ineffective heat dissipation and potentially leading to overheating or even a fire.

[0007] Preferably, an electrode contact is fixed to the outer wall of the piston rod, a one-way coupling is fixed to the inner side of one of the cooling fans, pull ropes are fixed to both sides of the one-way coupling, a circuit breaker is fixed to the inner wall of the housing, a locking tongue slides on the inner wall of the housing, a door is rotatably connected to one side of the housing, a lock box is fixed to the inner side of the door, one side of the locking tongue is slidably connected to the inside of the lock box, one end of each of the two pull ropes is fixed to the other side of the locking tongue and the outer wall of the circuit breaker, a fire extinguisher is fixed to the inner bottom wall of the housing, and a thermal valve is fixed to the outer wall of the output end of the fire extinguisher.

[0008] Preferably, the inner wall of the housing is slidably connected to a warning shell, one side of the slide cylinder is fixed to the outer wall of the warning shell, a power supply and a controller are provided inside the warning shell, and an audible and visual alarm is fixed to the outer wall of the warning shell.

[0009] Preferably, a second spring is provided on the outer wall of the piston rod, and the two ends of the second spring are respectively fixed between the piston rod and the side wall of the slide cylinder. A push block is fixed at the end of the piston rod away from the slide cylinder, and electrode contact one and electrode contact two are both fixed on the upper side of the push block.

[0010] Preferably, the outer wall of one of the pull ropes passes through the inner wall of the box, and the upper side of the other pull rope is attached to a slide rod, which is fixed to the inner wall of the box. A spring rod is fixed to one side of the box, and the end of the spring rod away from the box is attached to the inner side of the box door.

[0011] Preferably, a return spring is fixed to the other side of the latch, one end of the return spring is fixed to the inner wall of the housing, a cam is rotatably connected inside the lock box, a slider is attached to the outer wall of the cam, the side of the slider away from the cam is attached to the side of the latch, and elastic ropes are fixed to both sides of the cam, one end of the elastic rope is fixed to the inner wall of the lock box.

[0012] Preferably, a first spring is fixed between the box body and the warning housing, the outer wall of the box body is provided with a sliding groove that cooperates with the sliding of the warning housing, and an ejection assembly is installed inside the box body. The ejection assembly includes a locking block and a second return spring. The two ends of the second return spring are respectively fixed to the side wall between the locking block and the box body. One side of the locking block is in contact with the side of the warning housing away from the first spring, and the other side of the locking block is set with an arc surface.

[0013] Preferably, a connecting rod is fixed to one side of the locking block, and a push plate is fixed to the side of the connecting rod away from the locking block. One side of the push plate is fitted into the output end of the fire extinguisher.

[0014] Preferably, the inner wall of the box is provided with a groove, and the inner wall of the groove and the outer wall of the card block are interference fit.

[0015] Preferably, a top block is attached to the other side of the card block, and a compression spring is fixed to the side of the top block away from the card block, with one end of the compression spring fixed inside one side of the housing.

[0016] Working principle: When the temperature sensor in the distribution box is damaged, the temperature reaches a certain degree, preventing the cooling fan from rotating. The gas inside the slide expands due to heat, pushing the piston rod towards the counterweight contact and causing the counterweight contact to rotate. This causes the rotating ring to rotate, resulting in misalignment of the locking strip and the locking slot. When the counterweight contact slides to electrode contact two on the piston rod, the cooling fan circuit is connected, and it begins to rotate to dissipate heat. This solves the problem that when the temperature sensor is damaged, the temperature monitoring inside the distribution box cannot accurately reflect the actual internal temperature, resulting in ineffective heat dissipation and potentially leading to overheating or even a fire.

[0017] This invention provides an automatic early warning distribution box. It has the following beneficial effects: 1. This invention uses the expansion of gas inside the slide cylinder to push the piston rod to move horizontally, causing the locking strip and the locking groove to misalign. Through the contact between electrode contact two and the counterweight contact, the cooling fan is activated to dissipate heat. This solves the problem that when the temperature sensor is damaged, the temperature monitoring in the distribution box cannot accurately reflect the actual internal temperature, resulting in ineffective heat dissipation, which may lead to overheating or even fire.

[0018] 2. This invention further expands the gas inside the slide cylinder, pushing the piston rod to move. This causes the counterweight contact and the electrode contact to come into contact, causing the cooling fan to reverse. This pulls the rope, causing the circuit breaker to trip and disconnect the power, and opens the box door, improving the air exchange efficiency inside and outside the box. Through the cooperation of the thermal valve and the fire extinguisher, the automatic cooling and early warning function of the distribution box is realized.

[0019] 3. This invention uses the gas ejected from the fire extinguisher to push the push plate, causing the locking block to release its restriction on the warning housing. Under the rebound of the first spring, the warning housing is pushed out of the box, reducing losses and preventing the fire from spreading due to power ignition, thus helping to improve the fire extinguishing efficiency of the fire extinguisher. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic cross-sectional view of the early warning housing structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the card box of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a partial cross-sectional structural diagram of the box body of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the lock box of the present invention; Figure 8 This is a three-dimensional structural diagram of the pop-up component of the present invention; Figure 9 This is a schematic diagram of the rear structure of the housing of the present invention.

[0021] The components are as follows: 1. Enclosure; 2. Circuit breaker; 3. Cooling fan; 4. One-way coupling; 5. Pull rope; 6. Spring rod; 7. Fire extinguisher; 8. Lock box; 9. Enclosure door; 10. Slide rod; 11. Thermosensitive valve; 12. Pop-out assembly; 120. Push plate; 121. Groove; 122. Second return spring; 123. Compression spring; 124. Top block; 125. Locking block; 126. Connecting rod; 13. Temperature sensor; 14. Slide cylinder; 15. Push block; 16. Electrode contact one; 7. Warning housing; 18. Rotating rod; 19. Locking bar; 20. Rotating ring; 21. Card box; 22. First spring; 23. Counterweight contact; 24. Electrode contact two; 25. Second spring; 26. Piston rod; 27. Audible and visual alarm; 28. Power supply; 29. ​​Controller; 30. Baffle; 31. Fixing rod; 32. Third spring; 33. Card slot; 34. Locking tongue; 35. Return spring one; 36. Cam; 37. Elastic rope; 38. Slider; 39. Slide groove. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 - Appendix Figure 5 This invention provides an automatic early warning distribution box, including a box body 1. A slide cylinder 14 and a card box 21 are fixed to the inner wall of the box body 1. A temperature sensor 13 is fixed to the outer wall of the slide cylinder 14. A piston rod 26 slides inside the slide cylinder 14. An electrode contact 24 is fixed to the upper side of one end of the piston rod 26. Cooling fans 3 are provided on both sides of the box body 1. A baffle 30 is provided at the lower part of one of the cooling fans 3. A fixing rod 31 is fixed to one side of the baffle 30. A fixing rod 31 is fixed to one side of the fixing rod 31. There is a rotating rod 18, and a rotating ring 20 is rotatably connected to the outer wall of the rotating rod 18. A counterweight contact 23 is fixedly connected to the lower side of the rotating ring 20. The outer wall of the counterweight contact 23 is slidably connected to the outer wall of the electrode contact 24. The outer wall of the rotating ring 20 passes through one side of the card box 21. The outer walls of the rotating ring 20 and the fixed rod 31 are both fixed with card strips 19. The card box 21 has a card groove 33 that is interference-fitted with the card strips 19. A third spring 32 is fixed between the fixed rod 31 and the inner wall of the box 1. In this embodiment, Figure 1 The front, back, left, and right are the orientations. The inside of the slide cylinder 14 is filled with gas, which can be nitrogen, carbon dioxide, argon + helium mixture or R134a phase change gas, etc. The internal temperature environment of the enclosure 1 is divided into four levels. The first level is the safe temperature range below 30 degrees Celsius. The second level is 30 to 60 degrees Celsius, which requires the cooling fan 3 to assist in heat dissipation. The third level is 60 to 80 degrees Celsius, at which time the power needs to be cut off. The fourth level is a fire state above 80 degrees Celsius. This level division is for example. The actual temperature range can be adjusted according to the operating temperature range of different structures in the enclosure 1 and the position of the slide cylinder 14. Specifically, when the distribution box is in use, the temperature sensor 13 measures the temperature near the slide cylinder 14 in real time. When the temperature measured by the cooling fan 3 is between 25 and 30 degrees Celsius, the cooling fan 3 is turned on to dissipate heat from the box 1. The airflow from the cooling fan 3 blows the baffle 30 from the inner wall of the box 1 to the outer side of the box 1, thereby causing the counterweight contact 23 to move horizontally closer to the inner wall of the box 1. In this state, if the temperature continues to rise to 30 degrees Celsius, the gas filled inside the slide cylinder 14 expands due to heat, pushing the piston rod 26 to move towards the counterweight contact 23. At this time, the counterweight contact 23 has already moved closer to the inner wall of the box 1, causing the two to be misaligned, thus realizing the heat dissipation function of the distribution box when the temperature sensor 13 is not damaged. If the temperature sensor 13 malfunctions or fails, it will not be able to trigger the cooling fan 3 to rotate when the temperature reaches 30 degrees Celsius. At this time, the piston rod 26 and the counterweight contact 23 are not misaligned, which causes the piston rod 26 to move and push the counterweight contact 23 to rotate, causing the rotating ring 20 to rotate. This causes the locking strip 19 and the locking slot 33 to misalign. When the counterweight contact 23 slides to the electrode contact 24 on the piston rod 26, the cooling fan 3 circuit is connected and it starts to rotate to dissipate heat. At this time, due to the misalignment of the locking strip 19 and the counterweight contact 23, the cooling fan 3 can no longer blow the baffle 30 to move. This solves the problem that when the temperature sensor is damaged, the temperature monitoring in the distribution box cannot accurately reflect the actual internal temperature, which makes it impossible to dissipate heat effectively, and may lead to overheating or even a fire.

[0024] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 An electrode contact 16 is fixed to the outer wall of the piston rod 26. A one-way coupling 4 is fixed to the inner side of one of the cooling fans 3. Pull ropes 5 are fixed to both sides of the one-way coupling 4. A circuit breaker 2 is fixed to the inner wall of the box 1. A locking tongue 34 slides on the inner wall of the box 1. A door 9 is rotatably connected to one side of the box 1. A lock box 8 is fixed to the inner side of the door 9. One side of the locking tongue 34 is slidably connected to the inside of the lock box 8. One end of each of the two pull ropes 5 is fixed to the other side of the locking tongue 34 and the outer wall of the circuit breaker 2, respectively. A fire extinguisher 7 is fixed to the inner bottom wall of the box 1. A thermal valve 11 is fixed to the outer wall of the output end of the fire extinguisher 7. Specifically, the one-way coupling 4 rotates, meaning that when the cooling fan 3 rotates to dissipate heat, the one-way coupling 4 does not rotate with it. The tension at the connection point between the pull rope 5 and the one-way coupling 4 is a preset value. Once the preset value is exceeded, the two separate. When temperature sensor 13 fails and the temperature rises to the third level, the gas inside the slide cylinder 14 expands further, pushing the piston rod 26 to move, causing the counterweight contact 23 to slide past the second electrode contact 24, allowing the cooling fan 3 to dissipate heat. However, if the temperature still cannot be lowered, the counterweight contact 23 slides onto the first electrode contact 16. At this time, the cooling fan 3 reverses, driving the one-way coupling 4 to rotate, pulling the pull rope 5, causing the circuit breaker 2 to trip and cut off the power. At the same time, the locking tongue 34 is pulled out of the lock box 8, opening the door 9, improving the heat dissipation efficiency inside the box 1, preventing fire, and thus achieving the third level of temperature warning and heat dissipation. When the temperature rises to the fourth level, a fire breaks out inside the box 1. The thermal valve 11 ruptures due to the heat, causing the high-pressure carbon dioxide gas in the fire extinguisher 7 to be released, which extinguishes the fire and cools down the inside of the box 1, thus realizing the function of automatic cooling and early warning of the distribution box.

[0025] Please see the appendix Figure 1 and attached Figure 3The inner wall of the housing 1 is slidably connected to the warning housing 17, one side of the slide cylinder 14 is fixed to the outer wall of the warning housing 17, the warning housing 17 is equipped with a power supply 28 and a controller 29, and the outer wall of the warning housing 17 is fixed with an audible and visual alarm 27. Specifically, the controller 29 can use a single-chip microcomputer or microprocessor, and the power supply 28 includes a battery pack and a power management circuit. The power supply 28 provides power to the controller 29, the cooling fan 3, the temperature sensor 13 and the audible and visual alarm 27, and is electrically connected to electrode contact 16 and electrode contact 24. The controller 29 is electrically connected to the power supply 28, the cooling fan 3, the temperature sensor 13 and the audible and visual alarm 27, and the power supply 28 is connected to the internal circuit of the housing 1 through contact sliding magnetic attraction, similar to the charging method of a smartwatch, so that the internal circuit of the housing 1 can charge the power supply 28. The temperature sensor 13 measures the temperature near the slide cylinder 14 in real time, or the counterweight contact 23 cooperates with electrode contact 24 and electrode contact 16, and transmits the data to the controller 29 for processing and analysis. The controller 29 controls the corresponding circuit and the cooling fan 3 to start. When the temperature reaches level three or above, the controller 29 controls the audible and visual alarm 27 to issue an audible and visual alarm to remind people in the vicinity. In addition, it can cooperate with other intelligent modules of the power distribution box to feed back information to the background. Thus, while realizing the temperature drop warning, the fault tolerance of the power distribution box is also improved by setting up an independent power supply 28.

[0026] Please see the appendix Figure 3 The piston rod 26 is provided with a second spring 25 on its outer wall. The two ends of the second spring 25 are respectively fixed between the piston rod 26 and the side wall of the slide cylinder 14. The piston rod 26 is fixed with a push block 15 at the end away from the slide cylinder 14. Electrode contact one 16 and electrode contact two 24 are both fixed on the upper side of the push block 15. Specifically, the second spring 25 is slightly compressed. The sealing structure between the piston rod 26 and the slide cylinder 14 makes the friction force when the piston rod 26 slides out of the slide cylinder 14 less than the friction force when the piston rod 26 slides into the slide cylinder 14. The increase in temperature inside the housing 1 causes the piston rod 26 to slide inside the slide cylinder 14, overcoming the elastic potential energy of the second spring 25 and driving the push block 15 to move horizontally. When the temperature inside the housing 1 drops to a safe temperature, the gas pressure inside the slide cylinder 14 decreases. The pressure difference inside and outside the slide cylinder 14 has a force that drives the piston rod 26 to slide into the electrode contact 24. At this time, through the rebound of the second spring 25, the piston rod 26 is further pushed into the slide cylinder 14 and returns to its original position, thereby realizing the reset of the piston rod 26.

[0027] Please see the appendix Figure 1 and attached Figure 6One of the pull ropes 5 passes through the inner wall of the box 1, and the upper side of the other pull rope 5 is attached to the slide rod 10. The slide rod 10 is fixed to the inner wall of the box 1. A spring rod 6 is fixed to one side of the box 1. The end of the spring rod 6 away from the box 1 is attached to the inner side of the box door 9. Specifically, when the cooling fan 3 pulls the cord 5, the other cord 5, guided by the slide bar 10, can smoothly disconnect the circuit breaker 2. The other cord 5 pulls the latch 34 to release the lock on the door 9, and through the rebound of the spring bar 6, the door 9 can be opened at an increased angle, improving the air exchange efficiency inside and outside the cabinet 1, thus helping to achieve the third-level temperature warning.

[0028] Please see the appendix Figure 1 Appendix Figure 6 and attached Figure 7 A return spring 35 is fixed on the other side of the locking tongue 34. One end of the return spring 35 is fixed to the inner wall of the housing 1. A cam 36 is rotatably connected inside the lock box 8. A slider 38 is attached to the outer wall of the cam 36. The side of the slider 38 away from the cam 36 is attached to the side of the locking tongue 34. Elastic ropes 37 are fixed on both sides of the cam 36. One end of the elastic rope 37 is fixed to the inner wall of the lock box 8. Specifically, when it is necessary to open the distribution box from the outside, a key is inserted and turned through the external keyhole, which drives the cam 36 to rotate. The outer wall of the cam 36 and the outer wall of the slider 38 interfere and slide relative to each other, so that the slider 38 overcomes the elastic potential energy of the elastic rope 37 and the return spring 35, pushes the locking tongue 34 to slide into the box 1, releases the fixation of the lock box 8, and thus realizes the function of opening the distribution box from the outside.

[0029] Please see the appendix Figure 2 Appendix Figure 8 and attached Figure 9 A first spring 22 is fixed between the housing 1 and the warning housing 17. The outer wall of the housing 1 is provided with a sliding groove 39 that cooperates with the sliding of the warning housing 17. An ejection assembly 12 is installed inside the housing 1. The ejection assembly 12 includes a locking block 125 and a second return spring 122. The two ends of the second return spring 122 are respectively fixed to the side wall between the locking block 125 and the housing 1. One side of the locking block 125 is in contact with the side of the warning housing 17 away from the first spring 22, and the other side of the locking block 125 is set with an arc surface. Specifically, the outer wall of the warning housing 17 is fixed with a dovetail-shaped guide rail, and the inner wall of the housing 1 is provided with a dovetail groove that slides and matches the dovetail-shaped guide rail. One end of the first spring 22 is fixed to the inner wall of the dovetail groove. When the warning housing 17 is installed, the warning housing 17 is inserted into the housing 1 through the sliding groove 39 at the back of the housing 1. The dovetail-shaped guide rail on one side of the warning housing 17 overcomes the elastic potential energy of the first spring 22 and enters the interior of the housing 1. The other side of the warning housing 17 presses the locking block 125, causing it to slide into the interior of the housing 1. After the other side of the warning housing 17 slides past the locking block 125, the locking block 125 returns to its original position under the rebound of the second return spring 122. Its outer wall and the outer wall of the warning housing 17 fit together, forming interference, thereby realizing the modular and quick installation function of the warning housing 17.

[0030] Please see the appendix Figure 2 and attached Figure 8 A connecting rod 126 is fixed to one side of the locking block 125, and a push plate 120 is fixed to the side of the connecting rod 126 away from the locking block 125. The side of the push plate 120 is attached to the output end of the fire extinguisher 7. When the internal temperature of the box 1 reaches the fourth level, a fire occurs. The thermal valve 11 on the output end of the fire extinguisher 7 ruptures, and the high-pressure carbon dioxide gas inside the fire extinguisher 7 is ejected onto the push plate 120. This pushes the push plate 120 to overcome the elastic potential energy of the return spring 122, causing the locking block 125 to retract into the box 1, releasing the lock on the warning housing 17. Under the rebound of the first spring 22, the warning housing 17 slides out of the box 1 and pops out into the external environment. At this time, the power inside the box 1 has been cut off, and the gas sprayed by the fire extinguisher 7 effectively extinguishes the fire inside the box 1, thus realizing the fire extinguishing function of the distribution box.

[0031] Please see the appendix Figure 8 The inner wall of the housing 1 is provided with a groove 121, and the inner wall of the groove 121 and the outer wall of the locking block 125 are interference fit. Specifically, when the gas ejected from the fire extinguisher 7 causes the push plate 120 to retract the locking block 125 back to the position where the groove 121 and the sliding area of ​​the return spring 122 are connected, the gas ejected from the fire extinguisher 7 causes the push plate 120 to deflect in the direction of horizontal movement and slide out of the groove 121 into the interior of the housing 1. The gas ejected from the fire extinguisher 7 no longer pushes the push plate 120 to move, thereby preventing the push plate 120 from blocking the fire extinguishing gas from quickly filling the interior of the housing 1, thus helping to improve the fire extinguishing efficiency of the fire extinguisher 7.

[0032] Please see the appendix Figure 8 On the other side of the locking block 125, a top block 124 is attached. On the side of the top block 124 away from the locking block 125, a compression spring 123 is fixed. One end of the compression spring 123 is fixed inside one side of the box body 1. Specifically, when the push plate 120 retracts to the position where the groove 121 and the sliding area of ​​the reset spring 122 are connected, the compression spring 123 rebounds and pushes the top block 124 to do work on the push plate 120, so that the push plate 120 slides out of the groove 121 quickly, thereby helping to improve the fire extinguishing efficiency of the fire extinguisher 7.

[0033] Work process: When using this distribution box, insert the warning housing 17 into the box 1 through the sliding groove 39 at the back of the box 1, and achieve modular quick installation of the warning housing 17 through the cooperation of the locking block 125 and the second reset spring 122. During this process, the power supply 28 is connected to the internal circuit of the box 1 through the contact sliding magnetic connection, so that the internal circuit of the box 1 can charge the power supply 28. When the temperature sensor 13 is damaged, the gas inside the slide cylinder 14 expands due to heat, pushing the piston rod 26 towards the counterweight contact 23 and causing the counterweight contact 23 to rotate, which in turn causes the rotating ring 20 to rotate, causing the locking strip 19 and the locking groove 33 to misalign. When the counterweight contact 23 slides to the electrode contact 24 on the piston rod 26, the cooling fan 3 circuit is turned on to perform the second level of heat dissipation. When the internal temperature of the enclosure 1 reaches the third level, the gas inside the slide cylinder 14 expands further, pushing the piston rod 26 to move, causing the counterweight contact 23 and the electrode contact 16 to contact, causing the cooling fan 3 to reverse, pulling the pull rope 5, causing the circuit breaker 2 to trip and disconnect the power, and opening the enclosure door 9, thereby improving the air exchange efficiency inside and outside the enclosure 1, improving the heat dissipation efficiency, and reducing the possibility of fire. When the internal temperature of the enclosure 1 reaches the fourth level of fire, the thermal valve 11 ruptures, and the gas sprayed from the fire extinguisher 7 pushes the push plate 120 to move, causing the locking block 125 to release its restraint on the warning housing 17. Under the rebound of the first spring 22, the warning housing 17 is pushed out of the enclosure 1, reducing the loss and preventing the fire from spreading due to the power supply 28 catching fire. The gas sprayed from the fire extinguisher 7 extinguishes the fire in the enclosure 1, thus solving the problem that when the temperature sensor is damaged, the temperature monitoring in the distribution box cannot accurately reflect the actual internal temperature, making it impossible to dissipate heat effectively, which may lead to overheating or even a fire.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic early warning distribution box, comprising a box body (1), characterized in that, The inner wall of the housing (1) is fixed with a slide cylinder (14) and a card box (21). A temperature sensor (13) is fixed on the outer wall of the slide cylinder (14). A piston rod (26) slides inside the slide cylinder (14). An electrode contact (24) is fixed on the upper side of one end of the piston rod (26). Cooling fans (3) are provided on both sides of the housing (1). A baffle (30) is provided at the lower part of one of the cooling fans (3). A fixing rod (31) is fixed on one side of the baffle (30). A rotating rod (18) is fixed on one side of the fixing rod (31). (18) has a rotating ring (20) rotatably connected to its outer wall. A counterweight contact (23) is fixedly connected to the lower side of the rotating ring (20). The outer wall of the counterweight contact (23) is slidably connected to the outer wall of the second electrode contact (24). The outer wall of the rotating ring (20) passes through one side of the card box (21). The outer walls of the rotating ring (20) and the fixing rod (31) are both fixed with card strips (19). The card box (21) has a card groove (33) that is interference fit with the card strip (19). A third spring (32) is fixed between the fixing rod (31) and the inner wall of the box (1).

2. An automatic early warning distribution box according to claim 1, characterized in that, The outer wall of the piston rod (26) is fixed with an electrode contact (16), and a one-way coupling (4) is fixed to the inner side of one of the cooling fans (3). Pull ropes (5) are fixed to both sides of the one-way coupling (4). A circuit breaker (2) is fixed to the inner wall of the housing (1). A locking tongue (34) slides on the inner wall of the housing (1). A door (9) is rotatably connected to one side of the housing (1). A lock box (8) is fixed to the inner side of the door (9). One side of the locking tongue (34) is slidably connected to the inside of the lock box (8). One end of each of the two pull ropes (5) is fixed to the other side of the locking tongue (34) and the outer wall of the circuit breaker (2). A fire extinguisher (7) is fixed to the inner bottom wall of the housing (1). A thermal valve (11) is fixed to the outer wall of the output end of the fire extinguisher (7).

3. An automatic early warning distribution box according to claim 1, characterized in that, The inner wall of the housing (1) is slidably connected to a warning housing (17), one side of the slide cylinder (14) is fixed to the outer wall of the warning housing (17), the warning housing (17) is provided with a power supply (28) and a controller (29), and the outer wall of the warning housing (17) is fixed with an audible and visual alarm (27).

4. An automatic early warning distribution box according to claim 2, characterized in that, The outer wall of the piston rod (26) is provided with a second spring (25). The two ends of the second spring (25) are respectively fixed between the piston rod (26) and the side wall of the slide cylinder (14). A push block (15) is fixed at the end of the piston rod (26) away from the slide cylinder (14). The first electrode contact (16) and the second electrode contact (24) are both fixed on the upper side of the push block (15).

5. An automatic early warning distribution box according to claim 1, characterized in that, One of the pull ropes (5) has its outer wall passing through the inner wall of the box (1), and the other pull rope (5) has a slide rod (10) attached to its upper side. The slide rod (10) is fixed to the inner wall of the box (1). A spring rod (6) is fixed to one side of the box (1), and the end of the spring rod (6) away from the box (1) is attached to the inner side of the box door (9).

6. An automatic early warning distribution box according to claim 2, characterized in that, A return spring (35) is fixed on the other side of the latch (34). One end of the return spring (35) is fixed to the inner wall of the box (1). A cam (36) is rotatably connected inside the lock box (8). A slider (38) is attached to the outer wall of the cam (36). The side of the slider (38) away from the cam (36) is attached to the side of the latch (34). Elastic ropes (37) are fixed on both sides of the cam (36). One end of the elastic rope (37) is fixed to the inner wall of the lock box (8).

7. An automatic early warning distribution box according to claim 1, characterized in that, A first spring (22) is fixed between the housing (1) and the warning housing (17). The outer wall of the housing (1) is provided with a sliding groove (39) that cooperates with the sliding of the warning housing (17). An ejection assembly (12) is installed inside the housing (1). The ejection assembly (12) includes a locking block (125) and a second reset spring (122). The two ends of the second reset spring (122) are respectively fixed to the side wall between the locking block (125) and the housing (1). One side of the locking block (125) is in contact with the side of the warning housing (17) away from the first spring (22). The other side of the locking block (125) is set as an arc surface.

8. An automatic early warning distribution box according to claim 7, characterized in that, A connecting rod (126) is fixed to one side of the locking block (125), and a push plate (120) is fixed to the side of the connecting rod (126) away from the locking block (125). The side of the push plate (120) is attached to the output end of the fire extinguisher (7).

9. An automatic early warning distribution box according to claim 8, characterized in that, The inner wall of the box (1) is provided with a groove (121), and the inner wall of the groove (121) and the outer wall of the locking block (125) are interference fit.

10. An automatic early warning distribution box according to claim 9, characterized in that, A top block (124) is attached to the other side of the card block (125), and a compression spring (123) is fixed to the side of the top block (124) away from the card block (125). One end of the compression spring (123) is fixed inside one side of the box body (1).

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