Electrical engineering control cabinet
By designing moisture-proof and slag-removing mechanisms in the electrical engineering control cabinet, the problem of rainwater splashing during heavy rain was solved, achieving waterproofing and heat dissipation effects for the control cabinet, ensuring the safety of electrical facilities, and improving the control cabinet's waterproofing and decontamination capabilities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WUHAN CHUHUA DINGSHENG CONSTR DEV CO LTD
- Filing Date
- 2023-04-22
- Publication Date
- 2026-04-17
AI Technical Summary
Existing electrical control cabinets are prone to rainwater splashing through their heat dissipation vents during heavy rain, which can damage internal electrical components and affect their service life.
A moisture-proof mechanism was designed, including an arc-shaped plate, magnetic blocks, and a slag removal mechanism. Rainwater is collected and buffered through the arc-shaped groove. During heavy rain, the arc-shaped plate rotates rapidly to close the heat dissipation vents, and the slag removal mechanism removes residue, ensuring heat dissipation and waterproofing effects.
It effectively prevents rainwater from splashing into the control cabinet, keeps the interior dry, ensures the safe operation of electrical facilities, automatically waterproofs in severe weather, ensures heat dissipation, reduces moisture intrusion, and improves decontamination capabilities.
Smart Images

Figure CN121886196A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of control cabinet technology, specifically to an electrical engineering control cabinet. Background Technology
[0002] A control cabinet is a set of switchgear, measuring instruments, protective devices, and auxiliary equipment assembled in a closed or semi-closed metal cabinet or panel according to electrical wiring requirements. Its layout should meet the requirements of normal operation of the power system, facilitate maintenance, and not endanger the safety of personnel and surrounding equipment. During normal operation, circuits can be connected or disconnected manually or automatically. In case of faults or abnormal operation, protective devices will disconnect the circuit or trigger an alarm. Measuring instruments can display various operating parameters, allow adjustment of certain electrical parameters, and provide alerts or signals for deviations from normal operating conditions. They are commonly used in power generation, distribution, and substations.
[0003] Currently, when electrical engineering control cabinets are placed outdoors, rainwater can easily splash into the cabinet through the heat dissipation vents. Although the vents are designed to be angled to protect against rain, rainwater can still splash into the cabinet during heavy rain, damaging the electrical components inside and affecting their lifespan. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides an electrical engineering control cabinet that solves the aforementioned problems.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: an electrical engineering control cabinet, including a control cabinet, a door panel hinged to the outer wall of the control cabinet, a handle fixedly connected to the outer wall of the door panel, a square groove opened on the outer wall of the control cabinet, and a moisture-proof mechanism provided on the inner wall of the square groove;
[0006] The moisture-proof mechanism includes:
[0007] A ventilation frame, which is a hollow square structure, has its outer wall fixedly connected to the inner wall of the square groove. A rotating shaft is rotatably connected to the inner wall of the ventilation frame. A fixing block is fixedly connected to the outer wall of the rotating shaft. A hinge rod is rotatably connected to the outer wall of the fixing block. A fixing block is fixedly connected to the outer wall of the hinge rod. The ventilation frame is used to dissipate heat from the control cabinet.
[0008] An arc-shaped plate, wherein the arc-shaped plate has an arc-shaped plate structure, a square plate is fixedly connected to the outer wall of the arc-shaped plate, a fixing plate is fixedly connected to the outer wall of the square plate, the outer wall of the fixing plate is fixedly connected to the outer wall of the fixing block, and an arc-shaped groove is formed on the inner wall of the arc-shaped plate. The arc-shaped plate is used for filling rainwater.
[0009] Preferably, the inner wall of the arc-shaped groove has a circular hole, the outer wall of the arc-shaped groove contacts a magnetic block, the outer wall of the magnetic block is fixedly connected to both sides of the inner wall of the ventilation frame, the outer wall of the rotating shaft is fixedly connected to a connecting plate, and a slag removal mechanism is provided outside the connecting plate, thereby fixing the counterweight block through the connecting plate.
[0010] Preferably, the slag removal mechanism includes a pull rope, one end of which is fixedly connected to the outer wall of the connecting plate, and the other end of which is fixedly connected to a counterweight.
[0011] Preferably, a baffle is fixedly connected to the inner wall of the ventilation frame, and an arc-shaped rod is fixedly connected to the outer wall of the baffle, so as to clean the inside of the circular hole through the arc-shaped rod.
[0012] Preferably, the inner wall of the arc-shaped groove is provided with a sliding groove, a scraper is slidably connected to the inner wall of the sliding groove, an elastic rope is fixedly connected to the outer wall of the scraper, one end of the elastic rope is fixedly connected to the inner wall of the arc-shaped groove, and a spring is fixedly connected to the outer wall of the square plate, one end of the spring is fixedly connected to the outer wall of the fixed block.
[0013] Preferably, the arc-shaped plate itself is magnetic, the baffle itself is magnetic, and the opposite sides of the arc-shaped plate and the baffle are magnetically attracted to each other, thus fixing each other by magnetic attraction through opposite poles.
[0014] Preferably, the magnetic block itself is magnetic, and the magnetic block and the opposite side of the arc plate are magnetically attracted to each other, so that they are fixed together by magnetic attraction through opposite poles.
[0015] Preferably, the arc of the arc rod itself is an arc with the axis of rotation as the center, and the diameter of the arc rod itself is smaller than the diameter of the inner wall of the circular hole, so that the arc rod can penetrate deep into the circular hole.
[0016] This invention provides an electrical engineering control cabinet. It has the following beneficial effects:
[0017] 1. This invention incorporates a moisture-proof mechanism. Rainwater accumulates in the arc-shaped groove, ensuring a constant level of water within the groove. This prevents raindrops from directly colliding with the groove surface; instead, they first come into contact with the accumulated water, effectively buffering the high-speed falling raindrops. This prevents larger raindrops from impacting the groove and splashing beyond the fixing block, rotating shaft, and connecting plate into the control cabinet, causing visible water droplets and affecting the safe operation of the electrical components. Furthermore, in light rain, rainwater is automatically drained through circular holes, keeping the inside of the arc-shaped groove dry and reducing moisture intrusion into the control cabinet when smaller raindrops do not splash into it.
[0018] 2. This invention incorporates a moisture-proof mechanism, allowing the arc-shaped plate to quickly fall after detaching from the magnetic attraction of the magnetic block. This enables the arc-shaped plate, fixed block, rotating shaft, and connecting plate to rotate rapidly via the rotating shaft, completely sealing the original heat dissipation gaps between each fixed block and the arc-shaped plate. It automatically identifies heavy rain and closes all gaps that are prone to water ingress, ensuring self-waterproofing in stormy weather. This reduces the risk of water ingress affecting internal electrical facilities when the control cabinet is placed outdoors in severe weather. Furthermore, the lower temperature in rainy environments allows for cooling through the scouring effect of rainwater. Under these conditions, even with the ventilation frame closed, there is no need to worry about the overall heat dissipation effect of the control cabinet.
[0019] 3. This invention incorporates a moisture-proof mechanism, ensuring that even during continuous rain, the curved plate remains magnetically closed to the baffle inside the ventilation frame. Rainwater accumulating vertically downwards on the curved plate will not drain through the circular hole, as the hole faces sideways in this state. Once the rain stops and the sky clears, the water on the curved groove evaporates, removing the weight of the rainwater. The magnetic attraction between the curved plate and the baffle is less than the downward force of the counterweight, pulling the connecting plate and rotating the shaft. The curved plate then rises and rotates, colliding with the magnetic block to return to its original position and maintain the magnetic attraction. This releases the air between each curved plate inside the ventilation frame, ensuring real-time heat dissipation on sunny days. This prevents excessive moisture inside the control cabinet caused by the curved plate automatically returning to its original position after heavy rain, even when rainfall has decreased.
[0020] 4. This invention incorporates a slag removal mechanism. During heavy rain, when the arc-shaped plate rapidly descends and rotates, closing the connection between the ventilation frame and the outside, the arc-shaped plate stops upon rapid impact with the baffle. Consequently, the fixed block, due to inertia, compresses the spring under the rotation of the hinge rod, causing it to deform and then rebound back onto the fixed block. This provides real-time vibration to the fixed block, preventing rainwater splashed onto it from sticking with dirt and failing to slide off. By cleaning the surface of the fixed block through vibration, it ensures that water splashed onto the fixed block while it is tilted is effectively slid off the tilted surface, reducing the entry of moisture into the control cabinet.
[0021] 5. By setting up a slag removal mechanism, after the arc plate and the baffle are quickly attached, the counterweight will also impact the fixed block through its own swing. As a result, the fixed block rebounds through the spring under inertia and is impacted by the counterweight again, which further vibrates through the spring rebound, thereby further improving the vibration effect of the fixed block itself and the efficient desiccation capacity at different vibration frequencies.
[0022] 6. By setting up a slag removal mechanism, the circular hole remains fitted outside the arc-shaped rod and does not come into contact with or rub against the arc-shaped rod when the arc-shaped plate rotates and descends. The arc-shaped rod extends into the circular hole to knock out and clear the accumulated leaves and residue inside the circular hole, ensuring the efficient water flow of the circular hole. At the same time, it also avoids abnormal closure caused by the circular hole being blocked during light rain. The automatic clearing of the circular hole ensures its long-term efficient and stable automatic closing switch operation.
[0023] 7. This invention, by setting up a slag removal mechanism, pushes off the residue adhering to the inner wall of the arc-shaped groove and the residue on the circular hole. At this time, the arc-shaped plate and arc-shaped groove are in a vertical state, and the pushed residue is washed down by the water flow and hits the arc-shaped rod, which quickly knocks out the residue inside the circular hole that has been cleaned by the arc-shaped rod, ensuring a thorough cleaning effect of the residue after cleaning the circular hole. With the rapid pushing of the scraper, the rainwater inside the arc-shaped groove is also quickly pushed out to wrap and push out the residue. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the present invention;
[0025] Figure 2 This is a schematic diagram of the ventilation frame of the present invention;
[0026] Figure 3 This invention represents a three-dimensional transformation of the moisture-proof mechanism. Figure 1 ;
[0027] Figure 4 This is a schematic diagram of the moisture-proof mechanism of the present invention;
[0028] Figure 5 This is a schematic diagram of the moisture-proof mechanism of the present invention;
[0029] Figure 6 This invention represents a three-dimensional transformation of the moisture-proof mechanism. Figure 2 ;
[0030] Figure 7 For the present invention Figure 3 Enlarged view of point A;
[0031] Figure 8 This is a schematic diagram of the arc-shaped groove of the present invention;
[0032] Figure 9 This is a schematic diagram of the moisture-proof mechanism of the present invention;
[0033] Figure 10 This is a schematic diagram of the disassembled structure of the slag removal mechanism of the present invention;
[0034] Figure 11 This is a schematic diagram of the slag removal mechanism of the present invention;
[0035] Figure 12 For the present invention Figure 10 Enlarged view of point B;
[0036] Figure 13 This invention represents a three-dimensional transformation of the moisture-proof mechanism. Figure 3 .
[0037] In the diagram: 1. Door panel, 2. Control cabinet, 3. Moisture-proof mechanism, 301. Ventilation frame, 302. Rain shield, 303. Fixing block, 304. Hinge rod, 305. Rotating shaft, 306. Connecting plate, 307. Fixing plate, 308. Square plate, 309. Arc plate, 310. Magnetic block, 311. Arc groove, 312. Circular hole, 4. Slag removal mechanism, 401. Scraper, 402. Elastic rope, 403. Sliding groove, 404. Baffle, 405. Arc rod, 406. Pull rope, 407. Counterweight, 408. Spring, 409. Signal transmitter, 5. Handle. Detailed Implementation
[0038] Example 1, please refer to Figure 1-4 The present invention provides a technical solution: an electrical engineering control cabinet, including a control cabinet 2, a door panel 1 hinged to the outer wall of the control cabinet 2, a handle 5 fixedly connected to the outer wall of the door panel 1, a square groove opened on the outer wall of the control cabinet 2, and a moisture-proof mechanism 3 provided on the inner wall of the square groove.
[0039] Moisture-proof mechanism 3 includes:
[0040] Ventilation frame 301 is a hollow square structure. The outer wall of ventilation frame 301 is fixedly connected to the inner wall of the square groove. A rotating shaft 305 is rotatably connected to the inner wall of ventilation frame 301. A fixing block 303 is fixedly connected to the outer wall of rotating shaft 305. A hinge rod 304 is rotatably connected to the outer wall of fixing block 303. A fixing block 302 is fixedly connected to the outer wall of hinge rod 304. Ventilation frame 301 is used to dissipate heat from control cabinet 2.
[0041] The arc-shaped plate 309 is an arc-shaped plate structure. A square plate 308 is fixedly connected to the outer wall of the arc-shaped plate 309. A fixing plate 307 is fixedly connected to the outer wall of the square plate 308. The outer wall of the fixing plate 307 is fixedly connected to the outer wall of the fixing block 303. An arc-shaped groove 311 is opened on the inner wall of the arc-shaped plate 309. The arc-shaped plate 309 is used for filling rainwater.
[0042] When the control cabinet 2 is placed outdoors, rainwater will fall on the outer wall of the control cabinet 2 and into the ventilation frame 301 for exhaust and heat dissipation when it rains. The rainwater is blocked by the inclined arc plate 309 inside the ventilation frame 301, and all the rainwater is blocked outside. The gap between each fixing block 302 ensures sufficient heat dissipation inside the control cabinet 2.
[0043] Example 2, please refer to Figure 1-9 Based on Embodiment 1, the present invention provides a technical solution: a circular hole 312 is provided on the inner wall of the arc groove 311, a magnetic block 310 is in contact with the outer wall of the arc groove 311, the outer wall of the magnetic block 310 is fixedly connected to both sides of the inner wall of the ventilation frame 301, a connecting plate 306 is fixedly connected to the outer wall of the rotating shaft 305, and a slag removal mechanism 4 is provided on the outside of the connecting plate 306.
[0044] As the rain intensifies, the rainwater falls into the arc-shaped groove 311 within the arc-shaped plate 309. Rainwater on the outer wall of the fixing block 302 slides down the inclined surface into the arc-shaped groove 311, accumulating there. When the rain is light, the accumulated water in the arc-shaped groove 311 flows out through the circular hole 312, preventing water accumulation. However, during heavy rain, the water accumulated in the arc-shaped groove 311 maintains a certain level of water level inside, preventing subsequent raindrops from directly colliding with its surface. Instead, the water flows through the groove itself. The water accumulated inside first comes into contact with the water, thus providing a sufficient buffering effect for the high-speed falling raindrops. This prevents the larger raindrops from impacting the arc-shaped groove 311 during heavy rain, which would cause the splashing range to expand and pass over the fixed block 302, rotating shaft 305, and connecting plate 306, splashing into the control cabinet 2 and causing obvious water droplets inside the control cabinet 2, affecting the safe operation of the electrical facilities inside the control cabinet 2. At the same time, in light rain, the rainwater is automatically drained through the circular hole 312. When the raindrops are small and do not splash into the control cabinet 2, the inside of the arc-shaped groove 311 remains dry, reducing the intrusion of moisture into the control cabinet 2.
[0045] When the rainfall exceeds the drainage capacity of the circular hole 312, water will gradually accumulate inside the arc-shaped groove 311. During heavy rainstorms, the amount of rain entering the arc-shaped groove 311 increases significantly, causing the drainage capacity of the circular hole 312 to far exceed the water inflow into the arc-shaped groove 311. As a result, the water level inside the arc-shaped groove 311 rises to the edge of the arc-shaped plate 309. At this point, the weight of the rainwater accumulating on the arc-shaped plate 309 exceeds the weight of the connecting plate 306, the bottom rope 406, the counterweight 407, and the magnetic attraction between the magnetic block 310 and the arc-shaped plate 309. Therefore, the weight inside the arc-shaped groove 311 is reduced to... The combined weight of the fixing blocks 302 and 303 causes the arc plate 309 to descend and detach from the magnetic attraction of the magnetic block 310. As a result, the arc plate 309 falls rapidly after detaching from the magnetic attraction of the magnetic block 310. This allows the arc plate 309, fixing blocks 302, rotating shaft 305, and connecting plate 306 to rotate rapidly via the rotating shaft 305. This completely closes and seals the original heat dissipation gaps between each fixing block 302 and arc plate 309. It automatically identifies rainstorms and closes all gaps that are prone to water ingress, ensuring that it is waterproof in stormy weather and reducing the risk of water ingress affecting the internal electrical facilities when the control cabinet 2 is placed outdoors in severe weather.
[0046] Example 3, please refer to Figure 1-13 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: the slag removal mechanism 4 includes a pull rope 406, one end of the pull rope 406 is fixedly connected to the outer wall of the connecting plate 306, and the other end of the pull rope 406 is fixedly connected to a counterweight 407.
[0047] A baffle 404 is fixedly connected to the inner wall of the ventilation frame 301, and an arc rod 405 is fixedly connected to the outer wall of the baffle 404.
[0048] The inner wall of the arc-shaped groove 311 is provided with a sliding groove 403. A scraper 401 is slidably connected to the inner wall of the sliding groove 403. An elastic rope 402 is fixedly connected to the outer wall of the scraper 401. One end of the elastic rope 402 is fixedly connected to the inner wall of the arc-shaped groove 311. A spring 408 is fixedly connected to the outer wall of the square plate 308. One end of the spring 408 is fixedly connected to the outer wall of the fixing block 302.
[0049] The arc plate 309 is magnetic, the baffle 404 is magnetic, and the opposite sides of the arc plate 309 and the baffle 404 are magnetically attracted to each other.
[0050] The magnetic block 310 itself is magnetic, and the magnetic block 310 and the opposite side of the arc plate 309 are attracted to each other.
[0051] The arc of the arc rod 405 is an arc centered on the pivot 305, and the diameter of the arc rod 405 is smaller than the diameter of the inner wall of the circular hole 312.
[0052] When the curved plate 309 rotates and falls to close, it remains magnetically attracted to the baffle 404. At this time, some water still accumulates inside the curved groove 311, maintaining a certain weight. This weight, combined with the magnetic attraction between the curved plate 309 and the baffle 404, exceeds the weight of the counterweight 407 on the bottom pull rope 406 of the connecting plate 306. Therefore, even as rain continues to fall, the curved plate 309 remains magnetically attracted to the baffle 404, closing the ventilation frame 301. Furthermore, the rainwater accumulated vertically downwards on the curved plate 309 will not drain through the circular hole 312, as the hole faces sideways in this state. Thus, the rainwater will not drain until the rainwater has completely drained. After the rain stops and the sky clears, the rainwater on the arc-shaped groove 311 evaporates as the air evaporates. At this time, there is no longer the gravity of the rainwater on the arc-shaped groove 311. As a result, the magnetic attraction between the arc-shaped plate 309 and the baffle 404 is less than the downward gravity of the counterweight 407. This pulls the connecting plate 306 to drive the rotating shaft 305 to rotate. The arc-shaped plate 309 then begins to rise and rotate, and collide with the magnetic block 310 to return to its original position and maintain the magnetic attraction. This releases the air between each arc-shaped plate 309 inside the ventilation frame 301, ensuring real-time heat dissipation on sunny days. This avoids the situation where the air is still extremely humid after heavy rain, even when the rainfall has decreased, and the arc-shaped plate 309 automatically returns to its position, which would cause excessive moisture inside the control cabinet 2.
[0053] Meanwhile, during heavy rain, when the arc plate 309 rapidly descends and rotates, closing the connection between the ventilation frame 301 and the outside, the arc plate 309 stops after a rapid impact with the baffle 404. As a result, the fixed block 302, due to inertia, compresses the spring 408 under the rotation of the hinge rod 304, causing it to deform and then rebound back onto the fixed block 302, vibrating the fixed block 302 in real time. This prevents rainwater splashed on the fixed block 302 from sticking with dirt and failing to slide off. By vibrating and cleaning the surface of the fixed block 302, it ensures that the water splashed onto the fixed block 302 in the tilted state can slide off the tilted surface efficiently, reducing the entry of moisture into the control cabinet 2.
[0054] Meanwhile, after the arc plate 309 and the baffle 404 are quickly attached, the counterweight 407 will also impact the fixed block 302 through its own swing. As a result, the fixed block 302 rebounds through the spring 408 under inertia and is impacted by the counterweight 407 again, which further vibrates through the rebound of the spring 408, thereby further improving the vibration effect of the fixed block 302 itself and its efficient cleaning ability at different vibration frequencies.
[0055] When the arc plate 309 rotates and descends, the circular hole 312 inside the arc groove 311 will rotate and fit onto the outside of the arc rod 405. The arc shape of the outer wall of the arc rod 405 is the same as the rotation trajectory of the arc plate 309, both set with the rotating shaft 305 as the center. Thus, when the arc plate 309 rotates and descends, the circular hole 312 will remain fitted onto the outside of the arc rod 405 and will not contact or rub against the arc rod 405. The arc rod 405 extends into the circular hole 312 to knock out and clear the leaves and debris accumulated inside the circular hole 312, ensuring the efficient water flow of the circular hole 312. At the same time, it also avoids abnormal closure caused by the circular hole 312 being blocked during light rain. It automatically clears the circular hole 312, ensuring its long-term efficient and stable automatic closing switch operation.
[0056] Furthermore, after the arc-shaped plate 309 rapidly rotates and descends, and impacts the baffle 404 to stop magnetically, the scraper 401 on the outer wall of the arc-shaped plate 309 will slide rapidly on the inner wall of the sliding groove 403 due to its own inertia, and pull the elastic rope 402 to deform, thereby pushing off the residue adhering to the inner wall of the arc-shaped groove 311 and the residue on the circular hole 312. At this time, the arc-shaped plate 309 and the arc-shaped groove 311 are in a vertical state, and the pushed residue will be washed off by the water flow and impact the arc-shaped rod 405, which will quickly knock out the residue inside the circular hole 312 that has been scooped out by the arc-shaped rod 405, ensuring a thorough cleaning effect of the residue after cleaning the circular hole 312. With the rapid pushing of the scraper 401, the rainwater inside the arc-shaped groove 311 will be quickly pushed out to wrap and push out the residue.
[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. An electrical engineering control cabinet, comprising a control cabinet (2), wherein a door panel (1) is hinged to the outer wall of the control cabinet (2), a handle (5) is fixedly connected to the outer wall of the door panel (1), and a square groove is formed on the outer wall of the control cabinet (2), characterized in that: The inner wall of the square groove is provided with a moisture-proof mechanism (3); The moisture-proof mechanism (3) includes: Ventilation frame (301), the ventilation frame (301) is a hollow square structure, the outer wall of the ventilation frame (301) is fixedly connected to the inner wall of the square groove, the inner wall of the ventilation frame (301) is rotatably connected to a rotating shaft (305), the outer wall of the rotating shaft (305) is fixedly connected to a fixing block (303), the outer wall of the fixing block (303) is rotatably connected to a hinge rod (304), the outer wall of the hinge rod (304) is fixedly connected to a fixing block (302), the ventilation frame (301) is used to dissipate heat from the control cabinet (2); An arc-shaped plate (309) is an arc-shaped plate structure. A square plate (308) is fixedly connected to the outer wall of the arc-shaped plate (309). A fixing plate (307) is fixedly connected to the outer wall of the square plate (308). The outer wall of the fixing plate (307) is fixedly connected to the outer wall of the fixing block (303). An arc-shaped groove (311) is provided on the inner wall of the arc-shaped plate (309). The arc-shaped plate (309) is used for filling rainwater.
2. An electrical engineering control cabinet according to claim 1, characterized in that: The inner wall of the arc-shaped groove (311) is provided with a circular hole (312), the outer wall of the arc-shaped groove (311) is in contact with a magnetic block (310), the outer wall of the magnetic block (310) is fixedly connected to both sides of the inner wall of the ventilation frame (301), the outer wall of the rotating shaft (305) is fixedly connected with a connecting plate (306), and a slag removal mechanism (4) is provided on the outside of the connecting plate (306).
3. An electrical engineering control cabinet according to claim 2, characterized in that: The slag removal mechanism (4) includes a pull rope (406), one end of which is fixedly connected to the outer wall of the connecting plate (306), and the other end of which is fixedly connected to a counterweight (407).
4. An electrical engineering control cabinet according to claim 3, characterized in that: A baffle (404) is fixedly connected to the inner wall of the ventilation frame (301), and an arc-shaped rod (405) is fixedly connected to the outer wall of the baffle (404).
5. An electrical engineering control cabinet according to claim 4, characterized in that: The inner wall of the arc-shaped groove (311) is provided with a sliding groove (403), and a scraper (401) is slidably connected to the inner wall of the sliding groove (403). An elastic rope (402) is fixedly connected to the outer wall of the scraper (401). One end of the elastic rope (402) is fixedly connected to the inner wall of the arc-shaped groove (311). A spring (408) is fixedly connected to the outer wall of the square plate (308), and one end of the spring (408) is fixedly connected to the outer wall of the fixing block (302).
6. An electrical engineering control cabinet according to claim 5, characterized in that: The arc-shaped plate (309) is magnetic, the baffle (404) is magnetic, and the arc-shaped plate (309) and the baffle (404) are magnetically attracted to each other on opposite sides.
7. An electrical engineering control cabinet according to claim 6, characterized in that: The magnetic block (310) itself is magnetic, and the magnetic block (310) and the opposite side of the arc plate (309) are magnetically attracted to each other.
8. An electrical engineering control cabinet according to claim 7, characterized in that: The arc of the arc rod (405) is an arc centered on the pivot (305), and the diameter of the arc rod (405) is smaller than the diameter of the inner wall of the circular hole (312).