Safety power distribution cabinet

Abstract

The invention belongs to the technical field of intelligent power grid equipment, and particularly relates to a safety power distribution cabinet which comprises a cabinet body, and a heat exchange inner plate is fixedly arranged on the rear side of the interior of the cabinet body. The device further comprises an environment temperature sensor, an air blower, an exhaust fan, a thermal insulation protection mechanism, a temperature sensing regulation and control mechanism, a dustproof blocking mechanism, a grounding mechanism, a loosening overhaul prompting mechanism and a dust removal triggering mechanism. According to the invention, whether thermal insulation blocking is carried out on the heat exchange surface of the power distribution cabinet or not can be automatically selected based on the external environment temperature of the power distribution cabinet, so that the heat dissipation difficulty of the power distribution cabinet caused by too high external environment temperature can be avoided; the automatic timing warning reminds workers to overhaul the grounding mechanism, loosening of the grounding mechanism caused by vibration is avoided, dust and impurities in external air can be effectively intercepted and filtered when active heat dissipation is carried out on the power distribution cabinet, and the situation that dust enters the power distribution cabinet and influences use of the power distribution cabinet is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of smart grid equipment, and in particular relates to a safe power distribution cabinet. Background Art

[0002] A distribution cabinet is an electrical device used for centralized installation of switches, instruments, protective devices and other equipment. It plays an important role in distributing electrical energy, controlling circuits, and protecting electrical equipment in the power system. Distribution cabinets have different types and specifications, which can be selected according to usage scenarios and needs. For example, the patent with patent announcement number CN110112662B proposes a safe power distribution cabinet.

[0003] There are many electronic components in the distribution cabinet, so excessive heat will accumulate during use. The heat accumulation will accelerate the aging of the wire insulation layer and electronic components in the distribution cabinet, reduce their service life, and cause the insulation performance of the insulation material to decline, increasing the risk of short circuit and leakage. Therefore, heat dissipation equipment is generally used to assist the heat dissipation operation of the distribution cabinet. However, when the external ambient temperature is high, it will directly lead to the heat dissipation difficulty of the distribution cabinet itself, and then cause the temperature inside the distribution cabinet to continue to rise. For distribution cabinets in high temperature areas, heat insulation materials will be installed on the outside of the distribution cabinet to reduce the external high temperature. Impact on the inside of the distribution cabinet. When the distribution cabinet is used in areas with large temperature differences, such as North China, the region is affected by continental high pressure in summer, with strong solar radiation, relatively low air humidity, fast heating speed, and easy formation of high temperature weather. The local temperature may even exceed 40°C, and in spring and autumn, the temperature difference between day and night is also quite obvious, with higher temperatures during the day and faster temperatures dropping at night. At this time, if the distribution cabinet is directly installed with insulation materials on the outside, it will affect the heat dissipation of the distribution cabinet when the external ambient temperature is low, which will affect the use of the distribution cabinet and cannot meet the actual use needs. Summary of the invention

[0004] The purpose of the present invention is to provide a safe power distribution cabinet in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical solution: a safe power distribution cabinet, comprising a cabinet body, a heat exchange inner plate is fixedly installed on the inner rear side of the cabinet body, and further comprising: An ambient temperature sensor is fixedly mounted on the top of the cabinet; The hair dryer and the exhaust fan are symmetrically embedded in the side walls of the cabinet; A thermal insulation protection mechanism is installed at the rear side of the cabinet; A temperature sensing and regulating mechanism is fixedly mounted on the inner wall of the cabinet; A dust-proof blocking mechanism is fixedly mounted on the outer wall of the cabinet and is arranged corresponding to the air inlet of the hair dryer; A grounding mechanism, fixedly mounted on the bottom of the cabinet; A loose maintenance prompt mechanism is fixedly mounted on the bottom of the cabinet; A dust cleaning trigger mechanism is fixedly mounted on the bottom of the cabinet and is electrically connected to the dust blocking mechanism; A transmission connection mechanism is installed between the loosening and maintenance prompting mechanism and the dust cleaning triggering mechanism; The PLC controller is fixedly mounted on the inner wall of the cabinet and is respectively electrically connected to the thermal insulation protection mechanism, the temperature sensing and regulating mechanism, the dust blocking mechanism, the grounding mechanism, the loosening and maintenance prompting mechanism, the dust cleaning triggering mechanism and the transmission connection mechanism.

[0006] In the above-mentioned safety distribution cabinet, the thermal insulation protection mechanism includes a plurality of thermal insulation plates equidistantly arranged inside the rear side of the cabinet body, the upper and lower ends of the thermal insulation plates are both set as arc structures, the thermal insulation plates are rotatably connected to the inner wall of the cabinet body through a rotating shaft, one end of the rotating shaft extends through the outside of the cabinet body and is fixedly connected with an adjusting gear, the outer wall of the cabinet body is fixedly provided with a cover shell covering the outside of the plurality of adjusting gears, the top of the cover shell is fixedly inserted with an electric push rod, and the lower movable end of the electric push rod is fixedly connected with an adjusting rack meshing with the plurality of adjusting gears.

[0007] In the above-mentioned safety distribution cabinet, the temperature sensing and control mechanism includes a control shell, the inner wall of the control shell is fixedly installed with a plurality of guide slide rods arranged side by side, and the plurality of guide slide rods are externally slidably sleeved with the same control plate, the upper end of the control plate and the top of the inner wall of the control shell are fixedly installed with a plurality of extrusion springs sleeved outside the guide slide rods, the lower end of the control plate is fixedly installed with a thrust permanent magnet plate, the bottom of the inner wall of the control shell is fixedly installed with a thrust electromagnetic plate arranged opposite to the thrust permanent magnet plate, the inner wall of the control shell is fixedly installed with a control resistor rod arranged parallel to the guide slide rod, and one side of the control plate is fixedly installed with a control conductive contact piece electrically in contact with the control resistor rod.

[0008] In the above-mentioned safety distribution cabinet, the dustproof blocking mechanism includes a rotating motor fixedly mounted on the outer wall of the cabinet body, the output end of the rotating motor is fixedly connected to a rotating plate, both ends of the rotating plate are fixedly connected to a dustproof frame, the dustproof frame is provided with a plurality of sockets arranged side by side on a side away from the rotating plate, and a force-bearing rod is movable in the corresponding sockets, one end of the plurality of force-bearing rods located in the dustproof frame is fixedly connected to the same dustproof mesh plate, and one end of the plurality of force-bearing rods located outside the dustproof frame is fixedly connected to the same force-bearing plate, a plurality of return springs sleeved outside the force-bearing rod are fixedly connected between the force-bearing plate and the dustproof frame, an elastic telescopic pad is fixedly connected between the side wall of the dustproof mesh plate and the inner wall of the dustproof frame, a dust-blocking plate is fixedly connected to the side wall of the dustproof frame close to the rotating plate, and a driving motor is also fixedly mounted on the bottom outer wall of the cabinet body, and the output end of the driving motor is fixedly connected to a cam arranged corresponding to the position of the force-bearing plate.

[0009] In the above-mentioned safety distribution cabinet, the grounding mechanism includes a grounding bolt fixedly installed at the bottom of the cabinet, the grounding bolt is provided with a grounding plate on its outer sleeve, a crimping nut for pressing the grounding plate is threadedly connected to the grounding bolt, and a grounding wire is connected to the grounding plate.

[0010] In the above-mentioned safety distribution cabinet, the loose maintenance prompt mechanism includes a prompt circular shell fixedly installed at the bottom of the cabinet body, a transmission shaft is rotatably connected to the center of the inner wall of the prompt circular shell, a reduction motor for driving the transmission shaft to rotate is fixedly installed at the lower end of the prompt circular shell, a prompt switch is fixedly installed on one side of the inner wall of the prompt circular shell, and the shaft wall of the transmission shaft is fixedly connected with an arc-shaped pressing block arranged corresponding to the position of the prompt switch.

[0011] In the above-mentioned safe power distribution cabinet, the dust cleaning trigger mechanism includes a trigger round shell fixedly installed at the bottom of the cabinet body, a linkage shaft is rotatably connected to the center of the inner wall of the trigger round shell, a trigger switch is fixedly installed on one side of the inner wall of the trigger round shell, and the shaft wall of the linkage shaft is fixedly connected to an arc-shaped trigger block arranged corresponding to the position of the trigger switch.

[0012] In the above-mentioned safety distribution cabinet, the transmission connection mechanism includes a U-shaped bracket fixedly mounted on the upper end of the trigger round shell, a connecting shaft is rotatably sleeved on the U-shaped bracket, the upper end of the connecting shaft and the upper end of the transmission shaft are transmission connected through a speed increasing sprocket assembly, the lower end of the connecting shaft is fixedly connected to a connecting permanent magnet plate, and the upper end of the linkage shaft is fixedly connected to a connecting electromagnetic plate arranged in contact with the connecting permanent magnet plate.

[0013] In the above-mentioned safety distribution cabinet, the side wall of the rotating plate is symmetrically provided with two sockets, and the movable sockets in the corresponding sockets are provided with locking rods, the outer wall of the cabinet is fixedly provided with two locking blocks symmetrically arranged about the rotating motor, the side walls of the locking blocks are provided with locking grooves matching and plugged with the locking rods, the two locking rods are fixedly connected with the same push-pull plate at one end away from the locking blocks, two locking springs sleeved on the outside of the locking rods are fixedly connected between the push-pull plate and the rotating plate, an insulating shell covering the outside of the push-pull plate is fixedly provided on the side wall of the rotating plate, a permanent magnetic plate is fixedly connected to the side of the push-pull plate away from the locking rod, and an attractive electromagnetic plate arranged opposite to the attractive permanent magnetic plate is fixedly provided on the inner wall of the insulating shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the set thermal insulation protection mechanism, ambient temperature sensor, and PLC controller, it can automatically select whether to perform thermal insulation on the heat exchange surface of the distribution cabinet based on the size of the ambient temperature outside the distribution cabinet. When the ambient temperature is greater than 40°C, the heat exchange surface of the distribution cabinet is automatically insulated to prevent the external ambient temperature from being too high, which will directly lead to the heat dissipation difficulty of the distribution cabinet itself and affect the use quality of the distribution cabinet. When the ambient temperature is lower than 40°C, the thermal insulation blocking of the heat exchange surface of the distribution cabinet is released, so that the heat accumulated in the distribution cabinet can be heat-exchanged with the external environment to assist the distribution cabinet in heat dissipation. At the same time, when the ambient temperature is lower than 0°C, the thermal insulation protection mechanism is gradually closed, thereby reducing the heat exchange between the distribution cabinet and the external environment. While maintaining the continued heat exchange to assist the distribution cabinet in stable operation, it is avoided that the external environment is too low. The temperature easily causes condensation inside the distribution cabinet, thereby reducing the internal electrical insulation performance of the distribution cabinet. When the external ambient temperature is lower than -10°C, the thermal insulation protection mechanism performs thermal insulation on the heat exchange surface of the distribution cabinet to prevent the use of the distribution cabinet from being affected by too low temperature.

[0015] 2. Through the set grounding mechanism, loose maintenance reminder mechanism, and temperature sensing and control mechanism, while having the power connection protection function of the distribution cabinet, it can automatically time and warn the staff to inspect the grounding mechanism for the impact of vibrations caused by the operation of internal transformers and other electronic equipment during the use of the distribution cabinet, so as to avoid the loosening of the grounding mechanism caused by vibration, which in turn causes a lack of sufficient contact pressure between the grounding bolt and the grounding wire, thereby increasing the contact resistance, so that when the fault current passes through, a large voltage drop will be generated at the connection, affecting the grounding effect and even causing the grounding failure problem. In addition, the reminder interval can be automatically adjusted based on whether the heat dissipation equipment of the distribution cabinet is working and the additional vibration caused by the working power, to ensure timely maintenance of the loosening of the grounding mechanism and ensure the safe use of the distribution cabinet.

[0016] 3. Through the provision of dust-proof blocking mechanism, dust-cleaning trigger mechanism, temperature sensing and regulating mechanism, hair dryer and exhaust fan, dust impurities in the external air can be effectively intercepted and filtered when the power distribution cabinet is actively dissipating heat, so as to prevent dust from entering the power distribution cabinet and affecting the use of the power distribution cabinet. In addition, it can automatically determine whether the dust accumulated on the dust-proof blocking mechanism will affect the ventilation volume based on the heat dissipation power, and automatically clean the accumulated dust to ensure smooth ventilation of active heat dissipation, thereby ensuring the heat dissipation quality and improving the stability of the use of the power distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention in front view and section; Figure 3 It is a rear view structural schematic diagram of the closed state of the thermal insulation protection mechanism of the present invention; Figure 4 It is a schematic cross-sectional view of the temperature sensing and regulating mechanism of the present invention; Figure 5 is a schematic cross-sectional view of the dust-proof blocking mechanism of the present invention; Figure 6 yes Figure 5 The middle part is a schematic diagram of the structure; Figure 7 yes Figure 5 A schematic diagram of the enlarged structure of part A; Figure 8 It is a structural schematic diagram of the grounding mechanism of the present invention; Fig. 9 It is a cross-sectional structural schematic diagram of the loosening inspection prompt mechanism and the dust cleaning trigger mechanism of the present invention; Fig.10 yes Figure 3 Schematic diagram of the three-dimensional structure of the middle insulation board.

[0018] In the figure: 1. cabinet; 2. thermal insulation protection mechanism; 21. thermal insulation board; 22. rotating shaft; 23. adjusting gear; 24. cover; 25. electric push rod; 26. adjusting rack; 3. temperature sensing and regulating mechanism; 31. regulating shell; 32. guide slide rod; 33. regulating plate; 34. extrusion spring; 35. thrust permanent magnet plate; 36. thrust electromagnetic plate; 37. regulating resistance rod; 38. regulating conductive contact; 4. dust blocking mechanism; 41. rotating motor; 42. rotating plate; 43. dustproof frame; 44. force rod; 45. dustproof mesh plate; 46. force plate; 47. reset spring; 48. elastic telescopic pad; 49. dust shield; 410. driving motor; 411. cam; 412. locking rod; 413. locking block; 414. locking groove; 415. push-pull Plate; 416, locking spring; 417, insulating shell; 418, suction permanent magnet plate; 419, suction electromagnetic plate; 5, grounding mechanism; 51, grounding bolt; 52, grounding plate; 53, crimping nut; 54, grounding wire; 6, loosening inspection reminder mechanism; 61, reminder round shell; 62, transmission shaft; 63, reduction motor; 64, reminder switch; 65, arc-shaped pressing block; 7, dust cleaning trigger mechanism; 71, trigger round shell; 72, linkage shaft; 73, trigger switch; 74, arc-shaped trigger block; 8, transmission connection mechanism; 81, U-shaped bracket; 82, connecting shaft; 83, speed increasing sprocket assembly; 84, connecting permanent magnet plate; 85, connecting electromagnetic plate; 9, heat exchange inner plate; 10, ambient temperature sensor; 11, hair dryer; 12, exhaust fan; 13, PLC controller. Implementation

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 10 As shown, a safety power distribution cabinet includes a cabinet body 1, a heat exchange inner plate 9 is fixedly installed on the rear side of the inner side of the cabinet body 1, and further includes: The ambient temperature sensor 10 is fixedly mounted on the top of the cabinet 1, and can monitor the ambient temperature in real time and provide real-time feedback of the monitored information; The blower 11 and the exhaust fan 12 are symmetrically embedded in the side wall of the cabinet 1, which can actively dissipate heat for the power distribution cabinet and assist the power distribution cabinet to work more stably; The thermal insulation protection mechanism 2 is installed on the rear side of the cabinet 1. The thermal insulation protection mechanism 2 includes a plurality of thermal insulation plates 21 equidistantly installed inside the rear side of the cabinet 1. The upper and lower ends of the thermal insulation plate 21 are both set as arc structures. The thermal insulation plate 21 is rotatably connected to the inner wall of the cabinet 1 through a rotating shaft 22. One end of the rotating shaft 22 extends through the cabinet 1 and is fixedly connected with an adjusting gear 23. A cover shell 24 covering the plurality of adjusting gears 23 is fixedly installed on the outer wall of the cabinet 1. An electric push rod 25 is fixedly inserted on the top of the cover shell 24. The lower movable end of the electric push rod 25 is fixedly connected with an adjusting rack 26 meshing with the plurality of adjusting gears 23. It can automatically select whether the distribution cabinet needs thermal insulation protection according to the size of the external ambient temperature. In a high temperature environment, the thermal insulation performance of the distribution cabinet is improved to avoid the problem that the external ambient temperature is too high and affects the stable heat dissipation of the distribution cabinet.

[0021] The temperature sensing and regulating mechanism 3 is fixedly mounted on the inner wall of the cabinet 1. The temperature sensing and regulating mechanism 3 includes a regulating shell 31. A plurality of guide slide bars 32 arranged side by side are fixedly mounted on the inner wall of the regulating shell 31. The plurality of guide slide bars 32 are slidably sleeved with the same regulating plate 33. A plurality of extrusion springs 34 sleeved outside the guide slide bars 32 are fixedly mounted on the upper end of the regulating plate 33 and the top of the inner wall of the regulating shell 31. A thrust permanent magnet plate 35 is fixedly mounted on the lower end of the regulating plate 33. A thrust electromagnetic plate 36 arranged opposite to the thrust permanent magnet plate 35 is fixedly mounted on the bottom of the inner wall of the regulating shell 31. A regulating resistor rod 37 arranged parallel to the guide slide bar 32 is fixedly mounted on the inner wall of the regulating shell 31. A regulating conductive contact piece 38 electrically contacting the regulating resistor rod 37 is fixedly mounted on one side of the regulating plate 33. The feedback value can be automatically adjusted based on the size of the external ambient temperature, thereby controlling the use frequency of the dustproof blocking mechanism 4.

[0022] The dust-proof blocking mechanism 4 is fixedly mounted on the outer wall of the cabinet 1 and is arranged corresponding to the position of the air inlet of the hair dryer 11. The dust-proof blocking mechanism 4 includes a rotating motor 41 fixedly mounted on the outer wall of the cabinet 1. The output end of the rotating motor 41 is fixedly connected to a rotating plate 42. Both ends of the rotating plate 42 are fixedly connected to a dust-proof frame 43. The dust-proof frame 43 is provided with a plurality of jacks arranged side by side on a side away from the rotating plate 42, and a force-bearing rod 44 is provided in the corresponding movable sleeve in the jack. One end of the plurality of force-bearing rods 44 located in the dust-proof frame 43 is fixedly connected to The same dustproof mesh plate 45, multiple force-bearing rods 44 are fixedly connected to the same force-bearing plate 46 at one end outside the dustproof frame 43, and multiple return springs 47 are fixedly connected between the force-bearing plate 46 and the dustproof frame 43. An elastic telescopic pad 48 is fixedly connected between the side wall of the dustproof mesh plate 45 and the inner wall of the dustproof frame 43. A dust-blocking plate 49 is fixedly connected to the side wall of the dustproof frame 43 near the rotating plate 42. A driving motor 410 is also fixedly installed on the bottom outer wall of the cabinet 1, and the output end of the driving motor 410 is fixedly connected to the outer wall of the bottom outer wall of the cabinet 1. A cam 411 is connected to the position corresponding to the force plate 46, and two jacks are symmetrically provided on the side wall of the rotating plate 42, and a locking rod 412 is movably inserted in the corresponding jacks. Two locking blocks 413 symmetrically arranged about the rotating motor 41 are fixedly installed on the outer wall of the cabinet 1, and a locking groove 414 matching and plugged with the locking rod 412 is provided on the side wall of the locking block 413. The ends of the two locking rods 412 away from the locking block 413 are fixedly connected to the same push-pull plate 415, and the push-pull plate 415 and the rotating plate 42 are fixedly connected. Two locking springs 416 are sleeved on the outside of the locking rod 412, and the side wall of the rotating plate 42 is fixedly provided with an insulating shell 417 covering the outside of the push-pull plate 415. The side of the push-pull plate 415 away from the locking rod 412 is fixedly connected with a suction permanent magnetic plate 418, and the inner wall of the insulating shell 417 is fixedly provided with a suction electromagnetic plate 419 arranged opposite to the suction permanent magnetic plate 418. When actively cooling the distribution cabinet, dust and impurities in the external air can be effectively intercepted and filtered to prevent dust from entering the distribution cabinet and affecting the use of the distribution cabinet.

[0023] The grounding mechanism 5 is fixedly installed at the bottom of the cabinet 1. The grounding mechanism 5 includes a grounding bolt 51 fixedly installed at the bottom of the cabinet 1. The grounding bolt 51 is provided with a grounding plate 52 on its outer sleeve. The grounding bolt 51 is threadedly connected with a crimping nut 53 for pressing the grounding plate 52. The grounding plate 52 is connected with a grounding wire 54.

[0024] The loose maintenance prompt mechanism 6 is fixedly installed at the bottom of the cabinet 1. The loose maintenance prompt mechanism 6 includes a prompt circular shell 61 fixedly installed at the bottom of the cabinet 1. A transmission shaft 62 is rotatably connected to the center of the inner wall of the prompt circular shell 61. A reduction motor 63 for driving the transmission shaft 62 to rotate is fixedly installed at the lower end of the prompt circular shell 61. A prompt switch 64 is fixedly installed on one side of the inner wall of the prompt circular shell 61, and an arc-shaped pressing block 65 corresponding to the position of the prompt switch 64 is fixedly connected to the shaft wall of the transmission shaft 62.

[0025] The dust cleaning trigger mechanism 7 is fixedly mounted at the bottom of the cabinet 1 and is electrically connected to the dust blocking mechanism 4. The dust cleaning trigger mechanism 7 includes a trigger round shell 71 fixedly mounted at the bottom of the cabinet 1. A linkage shaft 72 is rotatably connected to the center of the inner wall of the trigger round shell 71. A trigger switch 73 is fixedly mounted on one side of the inner wall of the trigger round shell 71. The shaft wall of the linkage shaft 72 is fixedly connected to an arc-shaped trigger block 74 corresponding to the position of the trigger switch 73.

[0026] The transmission connection mechanism 8 is installed between the loose maintenance prompt mechanism 6 and the dust cleaning trigger mechanism 7. The transmission connection mechanism 8 includes a U-shaped bracket 81 fixedly installed on the upper end of the trigger shell 71. A connecting shaft 82 is rotatably sleeved on the U-shaped bracket 81. The upper end of the connecting shaft 82 and the upper end of the transmission shaft 62 are transmission connected through a speed increasing sprocket assembly 83. The lower end of the connecting shaft 82 is fixedly connected to a connecting permanent magnet plate 84. The upper end of the linkage shaft 72 is fixedly connected to a connecting electromagnetic plate 85 that is arranged in contact with the connecting permanent magnet plate 84.

[0027] The PLC controller 13 is fixedly mounted on the inner wall of the cabinet 1, and is electrically connected to the thermal insulation protection mechanism 2, the temperature sensing and regulating mechanism 3, the dust blocking mechanism 4, the grounding mechanism 5, the loosening and maintenance prompting mechanism 6, the dust cleaning triggering mechanism 7 and the transmission connection mechanism 8 respectively.

[0028] The operating principle of the present invention is described as follows: when the power distribution cabinet is working, the ambient temperature sensor 10 monitors the ambient temperature of the power distribution cabinet in real time, and feeds back the monitored temperature information to the PLC controller 13. When the ambient temperature is greater than 40°C, the PLC controller 13 controls the electric push rod 25 to move, and the electric push rod 25 pushes the adjustment rack 26 to move downward. Through the meshing action of the adjustment rack 26 and the adjustment gear 23, the multiple rotating shafts 22 drive the insulation board 21 to rotate 90 degrees, thereby making the insulation board 21 change from a horizontal placement state to a vertical placement state, thereby making the ends of multiple insulation boards 21 contact, and the rear side of the heat exchange inner plate 9 in the power distribution cabinet is insulated and protected, so as to avoid the external high temperature environment directly causing the power distribution cabinet itself to have difficulty in heat dissipation and affect the use quality of the power distribution cabinet. When the ambient temperature is lower than 40°C, the PLC controller 13 controls the electric push rod 25 to drive the adjustment The rack 26 moves upward, thereby removing the insulation barrier to the heat exchange surface of the distribution cabinet, so that the heat accumulated in the distribution cabinet can be heat exchanged with the external environment, assisting the distribution cabinet in heat dissipation. When the ambient temperature is lower than 0°C, the PLC controller 13 controls the electric push rod 25 to drive the adjustment rack 26 to move down a distance. The downward distance is specifically the difference between the ambient temperature and 0°C. The lower the ambient temperature, the greater the downward distance of the adjustment rack 26 pushed by the electric push rod 25, thereby making the flip displacement of the insulation board 21 greater, making the gap between two adjacent insulation boards 21 smaller, thereby reducing the heat exchange between the distribution cabinet and the external environment, until the external ambient temperature is lower than -10°C, at which time the downward distance of the electric push rod 25 reaches the maximum value, that is, the insulation board 21 is completely converted to a vertical state, and the rear side of the heat exchange inner plate 9 of the distribution cabinet is completely insulated to prevent the use of the distribution cabinet from being affected by too low temperature; When the power distribution cabinet is in use, the grounding bolt 51 cooperates with the grounding plate 52 and the grounding wire 54 to ground the power distribution cabinet, thereby effectively conducting fault current and static electricity into the earth to ensure the safety of personnel and equipment, and the PLC controller 13 controls the reduction motor 63 to act synchronously, and the reduction motor 63 drives the arc-shaped pressing block 65 to move slowly in the prompt round shell 61 through the transmission shaft 62 until the arc-shaped pressing block 65 presses on the prompt switch 64. At this time, the PLC controller 13 sends a signal to the receiving terminal of the staff to remind the staff to check whether the grounding mechanism 5 is loose, because the power distribution cabinet is in use due to its internal transformer, etc. The vibrations generated by other electronic devices during operation will affect the grounding mechanism 5. The presence of vibrations will cause the crimping nut 53 to loosen, thereby causing a lack of sufficient contact pressure between the grounding bolt 51 and the grounding wire 54, thereby increasing the contact resistance. When a fault current passes through, a large voltage drop will be generated at the connection, affecting the grounding effect, and even causing the grounding failure problem. Especially for temporary power usage, since the power demand is temporary, the grounding wire 54 also needs to be easy to install and remove. At this time, the crimping nut 53 of the grounding mechanism 5 will not be so firmly limited, and it is more likely to loosen. When the ambient temperature sensor 10 detects that the ambient temperature is greater than 30°C, it means that the power distribution cabinet needs active heat dissipation to assist the stable operation of the power distribution cabinet. The PLC controller 13 controls the operation of the hair dryer 11 and the exhaust fan 12 to form a heat dissipation duct in the cabinet 1, thereby quickly dissipating the heat accumulated inside the power distribution cabinet to avoid the problem of heat accumulation inside the power distribution cabinet affecting the stable use of the power distribution cabinet. The dustproof frame 43 contacts the air inlet of the hair dryer 11, and the dustproof mesh plate 45 inside the dustproof frame 43 can effectively intercept and filter dust impurities in the external air. When the ambient temperature is greater than 30°C and the power distribution cabinet needs to be actively cooled, the PLC controller 13 controls the power supply device to supply power to the thrust electromagnetic plate 36 based on the ambient temperature. The higher the ambient temperature, the greater the current supplied to the thrust electromagnetic plate 36 by the PLC controller 13. The thrust electromagnetic plate 36 will produce the same and greater magnetism as the thrust permanent magnet plate 35, thereby driving the control plate 33 to slide along the guide slide bar 32 to overcome the elastic force of the extrusion spring 34. The greater the sliding distance of the control conductive contact 38 on the control resistor rod 37, the smaller the access resistance of the control resistor rod 37. The control conductive contact 38 and the control resistor rod 37 are connected in series to the power supply circuit of the hair dryer 11 and the exhaust fan 12. The hair dryer 11 and the exhaust fan 12 are DC motors. Therefore, when the ambient temperature is higher, the access resistance of the control resistor rod 37 is smaller. At this time, the power supply current of the hair dryer 11 and the exhaust fan 12 is larger, which can increase the heat dissipation power to assist the power distribution cabinet to perform better heat dissipation. The regulating conductive contact piece 38 and the regulating resistor rod 37 are connected in series to the power supply circuit of the reduction motor 63. The reduction motor 63 is a DC motor. Therefore, when the ambient temperature is higher, the access resistance of the regulating resistor rod 37 is smaller, thereby making the power supply current of the reduction motor 63 larger, making the speed of the reduction motor 63 faster, and making the arc-shaped pressing block 65 press the prompt switch 64 faster, thereby increasing the frequency of the loosening maintenance prompt of the grounding mechanism 5, and automatically compensating for the additional vibration of the distribution cabinet caused by the addition of the hair dryer 11 and the exhaust fan 12, thereby making it easier for the grounding mechanism 5 to become loose. The greater the heat dissipation power of the hair dryer 11 and the exhaust fan 12, the greater the vibration caused by the heat dissipation. Increasing the frequency of the loosening maintenance prompt of the grounding mechanism 5 can ensure the timeliness of the loosening maintenance of the grounding mechanism 5 and ensure the safety of the distribution cabinet. When the ambient temperature is greater than 30°C, making the hair dryer 11 and the exhaust fan 12 work, the PLC controller 13 controls the power supply device to supply power to the connection electromagnetic plate 85, and the connection electromagnetic plate 85 is energized to generate magnetism opposite to the connection permanent magnet plate 84, thereby connecting the connection electromagnetic plate 85 and the connection permanent magnet plate 84 together, and the reduction motor 63 drives the transmission shaft 62 to rotate, while cooperating with the speed increasing sprocket assembly 83 to drive the connection shaft 82 to drive the linkage shaft 72 to rotate synchronously, thereby making the linkage shaft 72 drive the arc-shaped trigger block 74 to move slowly in the trigger round shell 71, until the arc-shaped trigger block 74 presses on the trigger switch 73, indicating that the dust currently acting on the dustproof screen plate 45 at the air inlet of the hair dryer 11 has reached the level that needs to be cleaned; At this time, the PLC controller 13 first controls the power supply device to supply power to the suction electromagnetic plate 419. The suction electromagnetic plate 419 is energized to generate a magnetism opposite to the suction permanent magnet plate 418, thereby generating an attraction force on the push-pull plate 415, so that the push-pull plate 415 drives the locking rod 412 to overcome the elastic force of the locking spring 416 and move back, so that the locking rod 412 is disengaged from the locking groove 414 of the side wall of the locking block 413, and then contacts the limit lock of the rotating plate 42. The PLC controller 13 then controls the rotating motor 41 to drive the rotating plate 42 to rotate 180 degrees, so that the dustproof frame 43 on the lower side drives the dustproof screen plate 45 to move to the air inlet of the hair dryer 11. The dustproof work is continued, and the dustproof mesh plate 45 which has completed the work on the upper side rotates to the lower side, and the PLC controller 13 controls the driving motor 410 to move, and the driving motor 410 drives the cam 411 to rotate. When the protruding part of the cam 411 pushes on the force plate 46, the force plate 46 cooperates with the force rod 44 to push the dustproof mesh plate 45 to move, and when the protruding part of the cam 411 leaves the force plate 46, the dustproof mesh plate 45 moves downward under the action of the return spring 47, thereby forming a reciprocating movement of the dustproof mesh plate 45, and then quickly shakes off the dust accumulated on the dustproof mesh plate 45, and automatically cleans the dustproof mesh plate 45; Similarly, since the moving power of the arc-shaped trigger block 74 is also provided by the reduction motor 63, when the ambient temperature is higher and the rotation speed of the reduction motor 63 is faster, the moving speed of the arc-shaped trigger block 74 will also increase synchronously, thereby shortening the interval time of the arc-shaped trigger block 74 pressing on the trigger switch 73, making the working frequency of the dust blocking mechanism 4 higher, thereby compensating for the high ambient temperature that increases the work of the hair dryer 11 and the exhaust fan 12, making the time for processing dust and impurities in the unit air shorter, and the dustproof screen 45 is more likely to be blocked, thereby increasing the cleaning frequency to ensure the smoothness of heat dissipation and ventilation, and ensuring the stable and safe use of the distribution cabinet.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety power distribution cabinet, comprising a cabinet body (1), wherein a heat exchange inner plate (9) is fixedly mounted on the rear side of the cabinet body (1), characterized in that: Also includes: An ambient temperature sensor (10) is fixedly mounted on the top of the cabinet (1); a blower (11) and an exhaust fan (12) are symmetrically embedded in the side walls of the cabinet (1); a thermal insulation protection mechanism (2) is mounted on the rear side of the cabinet (1); and a temperature sensing and regulating mechanism (3) is fixedly mounted on the inner wall of the cabinet (1); A dust blocking mechanism (4) is fixedly mounted on the outer wall of the cabinet (1) and is arranged corresponding to the air inlet of the hair dryer (11); a grounding mechanism (5) is fixedly mounted on the bottom of the cabinet (1); a loosening and maintenance prompting mechanism (6) is fixedly mounted on the bottom of the cabinet (1); a dust cleaning triggering mechanism (7) is fixedly mounted on the bottom of the cabinet (1) and is electrically connected to the dust blocking mechanism (4); a transmission connection mechanism (8) is mounted between the loosening and maintenance prompting mechanism (6) and the dust cleaning triggering mechanism (7); and a PLC controller (13) is fixedly mounted on the inner wall of the cabinet (1) and is electrically connected to the thermal insulation protection mechanism (2), the temperature sensing and regulating mechanism (3), the dust blocking mechanism (4), the grounding mechanism (5), the loosening and maintenance prompting mechanism (6), the dust cleaning triggering mechanism (7) and the transmission connection mechanism (8).

2. A safety distribution cabinet according to claim 1, characterized in that: The thermal insulation protection mechanism (2) comprises a plurality of thermal insulation plates (21) equidistantly arranged inside the rear side of the cabinet (1); the upper and lower ends of the thermal insulation plates (21) are both arranged as arc structures; the thermal insulation plates (21) are rotatably connected to the inner wall of the cabinet (1) via a rotating shaft (22); one end of the rotating shaft (22) extends through the cabinet (1) and is fixedly connected to an adjusting gear (23); a cover shell (24) covering the plurality of adjusting gears (23) is fixedly arranged on the outer wall of the cabinet (1); an electric push rod (25) is fixedly inserted on the top of the cover shell (24); and an adjusting rack (26) meshing with the plurality of adjusting gears (23) is fixedly connected to the lower movable end of the electric push rod (25).

3. A safety distribution cabinet according to claim 1, characterized in that: The temperature sensing and regulating mechanism (3) comprises a regulating shell (31), the inner wall of the regulating shell (31) is fixedly provided with a plurality of guide slide bars (32) arranged in parallel, the plurality of guide slide bars (32) are slidably sleeved with a same regulating plate (33) outside, the upper end of the regulating plate (33) and the top of the inner wall of the regulating shell (31) are fixedly provided with a plurality of extrusion springs (34) sleeved outside the guide slide bars (32), the lower end of the regulating plate (33) is fixedly provided with a thrust permanent magnet plate (35), the bottom of the inner wall of the regulating shell (31) is fixedly provided with a thrust electromagnetic plate (36) arranged opposite to the thrust permanent magnet plate (35), the inner wall of the regulating shell (31) is fixedly provided with a regulating resistor rod (37) arranged parallel to the guide slide bars (32), and one side of the regulating plate (33) is fixedly provided with a regulating conductive contact piece (38) in electrical contact with the regulating resistor rod (37).

4. A safety distribution cabinet according to claim 1, characterized in that: The dustproof blocking mechanism (4) comprises a rotating motor (41) fixedly mounted on the outer wall of the cabinet (1); the output end of the rotating motor (41) is fixedly connected to a rotating plate (42); both ends of the rotating plate (42) are fixedly connected to a dustproof frame (43); a side of the dustproof frame (43) away from the rotating plate (42) is provided with a plurality of plug holes arranged side by side, and corresponding movable plug sleeves in the plug holes are provided with force-bearing rods (44); one end of the plurality of force-bearing rods (44) located inside the dustproof frame (43) is fixedly connected to the same dustproof mesh plate (45); and one end of the plurality of force-bearing rods (44) located outside the dustproof frame (43) is fixedly connected to the same dustproof mesh plate (45). The cabinet (1) is fixedly connected to the same force-bearing plate (46), a plurality of return springs (47) sleeved outside the force-bearing rod (44) are fixedly connected between the force-bearing plate (46) and the dust-proof frame (43), an elastic telescopic pad (48) is fixedly connected between the side wall of the dust-proof mesh plate (45) and the inner wall of the dust-proof frame (43), a dust-blocking plate (49) is fixedly connected to the side wall of one end of the dust-proof frame (43) close to the rotating plate (42), and a driving motor (410) is fixedly installed on the bottom outer wall of the cabinet (1), and the output end of the driving motor (410) is fixedly connected to a cam (411) arranged corresponding to the position of the force-bearing plate (46).

5. A safety distribution cabinet according to claim 1, characterized in that: The grounding mechanism (5) comprises a grounding bolt (51) fixedly mounted on the bottom of the cabinet (1); a grounding plate (52) is disposed on the outer sleeve of the grounding bolt (51); a compression nut (53) for pressing the grounding plate (52) is threadedly connected to the grounding bolt (51); and a grounding wire (54) is connected to the grounding plate (52).

6. A safety distribution cabinet according to claim 1, characterized in that: The loosening inspection prompt mechanism (6) comprises a prompt circular shell (61) fixedly mounted on the bottom of the cabinet (1); a transmission shaft (62) is rotatably connected to the center of the inner wall of the prompt circular shell (61); a reduction motor (63) for driving the transmission shaft (62) to rotate is fixedly mounted on the lower end of the prompt circular shell (61); a prompt switch (64) is fixedly mounted on one side of the inner wall of the prompt circular shell (61); and an arc-shaped pressing block (65) arranged corresponding to the position of the prompt switch (64) is fixedly connected to the shaft wall of the transmission shaft (62).

7. A safety distribution cabinet according to claim 6, characterized in that: The dust cleaning trigger mechanism (7) comprises a trigger round shell (71) fixedly mounted on the bottom of the cabinet (1); a linkage shaft (72) is rotatably connected to the center of the inner wall of the trigger round shell (71); a trigger switch (73) is fixedly mounted on one side of the inner wall of the trigger round shell (71); and an arc-shaped trigger block (74) arranged corresponding to the position of the trigger switch (73) is fixedly connected to the shaft wall of the linkage shaft (72).

8. A safety distribution cabinet according to claim 7, characterized in that: The transmission connection mechanism (8) comprises a U-shaped bracket (81) fixedly mounted on the upper end of the trigger round shell (71); a connecting shaft (82) is rotatably sleeved on the U-shaped bracket (81); the upper end of the connecting shaft (82) and the upper end of the transmission shaft (62) are transmission-connected via a speed-increasing sprocket assembly (83); the lower end of the connecting shaft (82) is fixedly connected to a connecting permanent magnet plate (84); and the upper end of the linkage shaft (72) is fixedly connected to a connecting electromagnetic plate (85) arranged in contact with the connecting permanent magnet plate (84).

9. A safety distribution cabinet according to claim 4, characterized in that: The side wall of the rotating plate (42) is symmetrically provided with two insertion holes, and a locking rod (412) is provided in the movable sockets corresponding to the insertion holes. The outer wall of the cabinet (1) is fixedly provided with two locking blocks (413) symmetrically arranged with respect to the rotating motor (41). The side wall of the locking block (413) is provided with a locking groove (414) matched with the locking rod (412). One end of the two locking rods (412) away from the locking block (413) is fixedly connected to the same push-pull plate (415). The push-pull plate (415) is fixedly provided with two locking grooves (414) for plugging with the locking rod (412). Two locking springs (416) sleeved outside the locking rod (412) are fixedly connected between the plate (415) and the rotating plate (42); an insulating shell (417) sleeved outside the push-pull plate (415) is fixedly installed on the side wall of the rotating plate (42); a suction permanent magnetic plate (418) is fixedly connected to the side of the push-pull plate (415) away from the locking rod (412); and a suction electromagnetic plate (419) arranged opposite to the suction permanent magnetic plate (418) is fixedly installed on the inner wall of the insulating shell (417).

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