Anti-electric shock protection structure for factory power distribution cabinet

Abstract

The invention discloses an anti-electric shock protection structure for a factory power distribution cabinet, and belongs to the technical field of electrical equipment safety protection. The normally-closed structure comprises an iron block which is fixedly installed on the surface of the hinged side, away from the power distribution cabinet body, of the cabinet door, a strong magnet which is arranged on one side of the power distribution cabinet body and is used for being magnetically attracted with the iron block to lock the cabinet door, and an overturning assembly which is arranged on the cabinet door and is connected with the strong magnet. According to the anti-electric shock protection structure for the factory power distribution cabinet, through the combined design of the normally-closed structure, the transmission structure and the L-shaped pull rod, the operation requirements of normally-closed protection of the power distribution cabinet in daily life and non-power-off unlocking during normal use can be met, the cabinet door can be unlocked during maintenance, and the L-shaped pull rod pulls a main gate to be powered off through synchronous linkage; the electric shock risk that daily irrelevant personnel open the cabinet door by mistake is avoided, the potential safety hazard of hot-line operation during maintenance is reduced, and the electrical safety protection capability of the factory power distribution cabinet in daily use and maintenance is improved.

Description

Technical Field

[0001] This application relates to the field of electrical equipment safety protection technology, specifically an electric shock protection structure for factory distribution cabinets. Background Technology

[0002] In the industrial production sector, distribution cabinets are core equipment for power distribution and circuit control. Electrical safety protection during their use and maintenance is of paramount importance, directly affecting the personal safety of operators and the stable operation of production.

[0003] Currently, the power distribution cabinets used in factories often employ simple door closure structures, making them easily accessible to unqualified personnel. In some cases, due to convenience or negligence, the doors are left open for extended periods, directly exposing internal live components. This poses a significant risk of electric shock to unqualified personnel who may accidentally touch these components, resulting in personal injury. Furthermore, during maintenance, operators must manually perform the steps of opening the cabinet door and disconnecting the main power switch. This entire process relies heavily on the operator's safety awareness and judgment. If, due to negligence or operational errors, the operator fails to disconnect the main power switch before opening the cabinet door for maintenance, they are highly susceptible to short circuits, electric shocks, and other serious electrical safety accidents due to contact with live components, creating a substantial safety hazard for maintenance work.

[0004] Therefore, this application provides an electric shock protection structure for factory power distribution cabinets to solve the above problems. Summary of the Invention

[0005] This application provides an electric shock protection structure for factory power distribution cabinets, aiming to solve the problems mentioned in the background art. Existing factory power distribution cabinets have simple closing structures for their doors, which are easily opened by non-professionals or left open for a long time, causing accidental electric shock accidents. Furthermore, the opening of the cabinet door is not linked to the power cut-off of the main switch and relies entirely on manual operation. This can easily lead to situations where the cabinet door is opened without disconnecting the power during maintenance, posing a great electrical safety hazard.

[0006] To achieve the above objectives, this application provides the following technical solution: an electric shock protection structure for factory power distribution cabinets, comprising... The normally closed structure includes an iron block fixedly installed on the surface of the cabinet door away from the hinged side of the distribution cabinet, a strong magnet disposed on the side of the distribution cabinet for magnetic attraction with the iron block to lock the cabinet door, and a flipping assembly disposed on the cabinet door and connected to the strong magnet for causing the strong magnet to rotate forward and backward and drive the strong magnet to move closer to or away from the iron block. The L-shaped pull rod is installed inside the power distribution cabinet to pull the main switch gate down to cut off the power. The transmission structure is located on one side of the distribution cabinet and connected to the flip assembly and L-shaped pull rod. It rotates with the flip assembly in both directions, causing the L-shaped pull rod to move upwards away from the main switch gate or downwards to pull the main switch gate. The cabinet door is normally locked by the magnetic attraction between a normally closed iron block and a strong magnet. The flip assembly drives the strong magnet to rotate in both directions to move closer to or away from the iron block, unlocking the cabinet door. Simultaneously, the transmission structure rotates with the flip assembly in both directions, synchronously causing the L-shaped pull rod to move upwards away from or downwards to pull the main switch gate, ensuring smooth operation during normal use. The forward rotation of the flip component moves the strong magnet away from the iron block, unlocking the cabinet door. The transmission structure, in conjunction with the L-shaped pull rod, moves upward without affecting the main switch closing. During maintenance, the flip component rotates in the reverse direction to unlock the cabinet door, while the transmission structure, in conjunction with the L-shaped pull rod, moves downward to pull the main switch to cut off power. This achieves scenario-based adaptation for the distribution cabinet: normally closed protection when idle, unlocking and power supply during normal use, and unlocking and power cut-off during maintenance. It avoids the risk of electric shock caused by unauthorized personnel accidentally opening the cabinet door, reduces the safety hazards of live operation during maintenance, and improves the electrical safety protection capabilities of the factory's distribution cabinet during daily use and maintenance.

[0007] Preferably, to avoid the risk of electrical conductivity caused by direct contact between the iron block and the cabinet door, an insulating pad is fixedly installed on the side of the iron block near the cabinet door. By placing the insulating pad at the contact position between the iron block and the cabinet door, the non-conductive properties of the insulating material can be used to block the conductive path between the iron block and the cabinet door, thereby preventing leakage current inside the distribution cabinet from being conducted to the cabinet door through the iron block and causing electric shock to personnel, thus improving the safety of the structure.

[0008] Preferably, to achieve forward and reverse rotation of the strong magnet, the flipping assembly includes a protective cover fixedly installed on the side of the distribution cabinet corresponding to the strong magnet, a rotating shaft passing through the protective cover and rotatably connected to the protective cover, an L-shaped connecting shaft fixedly connected to the end of the rotating shaft away from the protective cover and fixedly connected to the side of the strong magnet, and a locking assembly disposed on the protective cover and connected to the rotating shaft for locking the rotating shaft in the forward rotation position or unlocking the rotating shaft to rotate in the reverse direction; the rotational power of the rotating shaft is transmitted to the strong magnet through the L-shaped connecting shaft, causing it to move closer to or away from the iron block. The locking assembly cooperates with the rotating shaft to lock the rotating shaft in the forward rotation position and unlock it in the reverse rotation position, which can realize the locking and unlocking of the cabinet door. At the same time, it forms an effective constraint on the rotation position of the rotating shaft, avoiding accidental reverse rotation of the rotating shaft during normal use, which may cause the cabinet door to be locked or the main switch to be cut off accidentally, thus improving the stability of the structural transmission and the accuracy of operation.

[0009] Preferably, to achieve locking after the shaft rotates, the locking assembly includes a ratchet fixedly sleeved on the shaft and located inside the protective cover, a connecting frame fixedly installed at the lower opening of the protective cover, a guide block fixedly installed on the connecting frame, a pawl longitudinally penetrating the guide block and slidably connected to the guide block for engaging with the ratchet, a push rod longitudinally penetrating the connecting frame and slidably connected to the connecting frame at a position corresponding to the lower position of the guide block, and a spring sleeved on the push rod for driving the pawl to remain engaged with the ratchet. Both ends of the push rod are fixedly connected to the guide block near the push rod end and the connecting frame, respectively. The push rod is fixedly connected to the pawl away from the ratchet end. As the ratchet rotates synchronously with the shaft, the elastic force of the spring drives the push rod to keep the pawl and ratchet engaged, which can achieve one-way locking after the shaft rotates in the forward direction. By pushing the push rod, the pawl can slide along the guide block away from the ratchet, releasing the engagement between the two to allow the shaft to rotate in the reverse direction. Releasing the push rod can also achieve locking of the shaft rotating in the reverse direction, thereby preventing the shaft from accidentally reversing and ensuring the stability of the cabinet door unlocked state and the main switch closed state.

[0010] Preferably, to facilitate the operation of the push rod, the flipping assembly further includes a pressing plate located below the connecting frame and fixedly connected to the end of the push rod away from the pawl for disengaging the pawl from the ratchet. By positioning the pressing plate below the connecting frame and fixing it to the end of the push rod, the operating contact area can be increased, allowing the operator's pressing force to be evenly transmitted to the push rod, driving the push rod to move longitudinally and pull the pawl away from the ratchet. This allows the operator to quickly complete the unlocking operation without the need for tools, which is simple and convenient.

[0011] Preferably, to achieve the transmission between the flipping component and the L-shaped pull rod, the transmission structure includes a fixed box fixedly mounted on the distribution cabinet and located on the side of the protective cover away from the strong magnet, a gear disposed in the fixed box, a rack that moves longitudinally within the fixed box corresponding to the side of the gear and meshes with the gear, and an L-shaped frame that passes through the distribution cabinet and is slidably connected to the distribution cabinet. One end of the rotating shaft away from the L-shaped connecting shaft passes through the fixed box and is rotatably connected within the fixed box. The gear is fixedly sleeved on the rotating shaft, and the two ends of the L-shaped frame are respectively... The rack is fixedly connected to the side away from the gear and the L-shaped pull rod. The rotation of the shaft drives the gear in the fixed box to rotate synchronously. The gear meshes with the rack, converting the rotational motion into the longitudinal linear motion of the rack. The power of the rack is then transmitted to the L-shaped pull rod through the L-shaped frame, causing the L-shaped pull rod to rise and fall synchronously. During normal use, the gear rotates in the forward direction, causing the rack to rise, ensuring that the L-shaped pull rod will not pull the main switch gate. During maintenance, the gear rotates in the reverse direction, causing the rack to fall, which in turn causes the L-shaped pull rod to fall synchronously, thus pulling the main switch gate to cut off the power. This ensures the synchronicity of the cabinet door unlocking and the main switch power on / off linkage.

[0012] Preferably, to ensure the stability of the rack's movement, the guide rod is fixedly installed inside the fixing box, and the rack is slidably sleeved on the guide rod. The design of the guide rod can limit the lateral displacement of the rack, allowing it to only move longitudinally along the guide rod, thereby preventing the rack from disengaging from the gear or getting stuck, and ensuring the meshing stability of the gear and rack.

[0013] Preferably, to ensure the stability of the L-shaped frame's movement, the distribution cabinet is provided with a guide groove at the position corresponding to the L-shaped frame for longitudinal sliding of the L-shaped frame. The guide groove is longitudinally formed on the distribution cabinet along the moving direction of the L-shaped frame, so that the L-shaped frame passes through the guide groove and moves longitudinally in a straight line along the guide groove, thereby limiting the lateral displacement of the L-shaped frame and preventing the L-shaped frame from deviating or shaking during sliding. This ensures that the L-shaped frame can transmit the power of the rack to the L-shaped tie rod, improving the safety and reliability of the structure.

[0014] Preferably, to enhance operational safety, the L-shaped pull rod, L-shaped connecting shaft, and pressing plate are all made of insulating material. Utilizing the non-conductive properties of the insulating material, leakage current inside the distribution cabinet is blocked from being conducted to the parts touched by the operator through the L-shaped pull rod, L-shaped connecting shaft, and pressing plate, thus forming physical insulation protection. This prevents electric shock to the operator when operating the pressing plate or accidentally touching the L-shaped connecting shaft or L-shaped pull rod, further enhancing the electrical safety protection level of the distribution cabinet during use and maintenance from the operation end.

[0015] The factory's power distribution cabinet uses an anti-electric shock protection structure that achieves normal door locking through an iron block and a strong magnet. The cabinet door is unlocked by the forward and reverse rotation of the flipping component, which moves the strong magnet closer to or away from the iron block. At the same time, a transmission structure converts the rotation of the flipping component into the lifting and lowering of an L-shaped lever. This not only meets the requirements of normal door locking during daily use and unlocking without disconnecting the power during normal operation, but also allows the L-shaped lever to pull the main switch to cut off the power during maintenance. This avoids the risk of electric shock from unauthorized personnel accidentally opening the cabinet door, reduces the safety hazards of live operation during maintenance, and improves the electrical safety protection capabilities of the factory's power distribution cabinet during daily use and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a shockproof protection structure for a factory power distribution cabinet. Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the structure of a power distribution cabinet in a factory power distribution cabinet anti-electric shock protection structure. Figure 4 for Figure 3 Enlarged structural diagram at point B; Figure 5 This is a cross-sectional schematic diagram of the normally closed structure and the transmission structure in a protective structure against electric shock for a factory power distribution cabinet. Figure 6 This is a cross-sectional schematic diagram of the normally closed structure in an electric shock protection structure for a factory power distribution cabinet. Figure 7 This is a cross-sectional schematic diagram of the transmission structure in a protective structure against electric shock for a factory power distribution cabinet.

[0017] In the picture: 1. Distribution cabinet body; 11. Guide channel; 2. Cabinet doors; 3. Normally closed structure; 31. Iron block; 311. Insulating pad; 32. Strong magnet; 33. Flip assembly; 331. Protective cover; 332. Rotating shaft; 333. L-shaped connecting shaft; 334. Locking assembly; 3341. Ratchet; 3342. Pawl; 3343. Connecting frame; 3344. Guide block; 3345. Push rod; 3346. Spring; 335. Press plate; 4. Transmission structure; 41. Fixing box; 42. Gear; 43. Rack; 44. L-shaped frame; 45. Guide rod; 5. L-shaped tie rod. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] This embodiment provides an electric shock protection structure for factory power distribution cabinets, such as... Figures 1-7 As shown, the electric shock protection structure includes a normally closed structure 3, which includes an iron block 31 fixedly installed on the surface of the cabinet door 2 away from the hinged side of the distribution cabinet 1; a strong magnet 32 ​​set on one side of the distribution cabinet 1 for magnetic attraction with the iron block 31 to lock the cabinet door 2; and a flipping component 33 set on the cabinet door 2 and connected to the strong magnet 32 ​​for rotating the strong magnet 32 ​​forward and backward and driving the strong magnet 32 ​​closer to or away from the iron block 31; an L-shaped pull rod 5, which is set inside the distribution cabinet 1 for pulling the main switch gate down to cut off the power; and a transmission structure 4, which is set on one side of the distribution cabinet 1 and connected to the flipping component 33 and the L-shaped pull rod 5 for rotating with the flipping component 33 in the forward and reverse directions, driving the L-shaped pull rod 5 up away from the main switch gate or down to pull the main switch gate.

[0020] To avoid the risk of electrical conductivity caused by direct contact between the iron block 31 and the cabinet door 2, an insulating pad 311 is fixedly installed on the side of the iron block 31 closest to the cabinet door 2. By placing the insulating pad 311 at the contact position between the iron block 31 and the cabinet door 2, the non-conductive properties of the insulating material can be used to block the conductive path between the iron block 31 and the cabinet door 2, thereby preventing leakage current inside the distribution cabinet from being conducted to the cabinet door 2 through the iron block 31 and causing electric shock to personnel, thus improving the safety of the structure.

[0021] During use, in the operation of the anti-electric shock protection structure for the power distribution cabinet in this factory, the iron block 31 of the normally closed structure 3 is fixedly installed on the surface of the cabinet door 2 away from the hinged side of the power distribution cabinet body 1, forming a magnetic attraction with the strong magnet 32 ​​provided on one side of the power distribution cabinet body 1. Under normal conditions, the magnetic attraction force of the strong magnet 32 ​​on the iron block 31 is used to lock and fix the cabinet door 2, keeping the power distribution cabinet body 1 in a normally closed protective state. An insulating pad 311 is also fixedly installed on the side of the iron block 31 near the cabinet door 2. The insulating pad 311 is directly attached to the contact position between the iron block 31 and the cabinet door 2, becoming a physical isolation between the iron block 31 and the cabinet door 2. The insulating pad 311 utilizes its non-conductive insulating material to directly block the conductive path between the iron block 31 and the cabinet door 2. Even if leakage occurs inside the distribution cabinet 1, the leakage current cannot be conducted through the normally closed structure 3 to the cabinet door 2 on the other side of the insulating pad 311. This physically cuts off the possibility of leakage current being transmitted to the cabinet door 2, preventing staff or unauthorized personnel from contacting the cabinet door 2. When the distribution cabinet needs to be used normally, only the cabinet door 2 needs to be unlocked while the main switch is closed. The flipping component 33 is operated, causing the flipping component 33 to drive the strong magnet 32 ​​to rotate. This rotation will drive the strong magnet... As the iron block 31 moves away from component 32, the magnetic attraction between them gradually disappears with increasing distance, releasing the magnetic lock on cabinet door 2 and allowing it to open smoothly. Simultaneously, the forward rotation of the flipping component 33 is transmitted to the connected transmission structure 4. The transmission structure 4, in conjunction with the forward rotation of the flipping component 33, moves the L-shaped pull rod 5 inside the distribution cabinet 1 upwards, moving it away from the main switch gate. This prevents the L-shaped pull rod 5 from exerting force on the main switch gate, keeping the main switch closed and ensuring normal power supply to the distribution cabinet. When maintenance of the distribution cabinet is required, cabinet door 2 needs to be unlocked, and the main switch power needs to be simultaneously cut off, the flipping component 33 is operated. The reverse rotation of the flip component 33 also causes the strong magnet 32 ​​to move away from the iron block 31, releasing the magnetic attraction force to unlock the cabinet door 2, making it easier for staff to open the cabinet door 2 for maintenance. At the same time, the reverse rotation of the flip component 33 will be transmitted to the transmission structure 4. The transmission structure 4 will generate a linkage action opposite to that during normal use as the flip component 33 rotates in the opposite direction, causing the L-shaped pull rod 5 inside the power distribution cabinet 1 to move downward. During the downward movement of the L-shaped pull rod 5, it directly acts on the main switch gate and pulls the main switch gate downward, realizing the power-off operation of the main switch of the power distribution cabinet, thus avoiding the risk of live operation during maintenance from the root.

[0022] Specifically, the flipping assembly 33 includes a protective cover 331 fixedly installed on one side of the distribution cabinet 1 corresponding to the strong magnet 32, a rotating shaft 332 passing through the protective cover 331 and rotatably connected to the protective cover 331, an L-shaped connecting shaft 333 fixedly connected to the end of the rotating shaft 332 away from the protective cover 331 and fixedly connected to the side of the strong magnet 32, and a locking assembly 334 disposed on the protective cover 331 and connected to the rotating shaft 332 for locking the rotating shaft 332 in the forward rotation position or unlocking the rotating shaft 332 to rotate in the reverse direction; the locking assembly 334 includes a ratchet 3341 fixedly sleeved on the rotating shaft 332 and located inside the protective cover 331, and a connecting bracket 33 fixedly installed at the lower opening of the protective cover 331. 43. A guide block 3344 fixedly installed on the connecting frame 3343, a pawl 3342 that runs longitudinally through the guide block 3344 and is slidably connected to the guide block 3344 for engaging with the ratchet 3341, a push rod 3345 that runs longitudinally through the connecting frame 3343 and is slidably connected to the connecting frame 3343 at a position corresponding to the lower position of the guide block 3344, and a spring 3346 sleeved on the push rod 3345 for driving the pawl 3342 to maintain engagement with the ratchet 3341. The two ends of the spring 3346 are fixedly connected to the end of the guide block 3344 near the push rod 3345 and the connecting frame 3343, respectively. The push rod 3345 is fixedly connected to the end of the pawl 3342 away from the ratchet 3341.

[0023] When the distribution cabinet needs to be used normally, and only cabinet door 2 needs to be unlocked while the main switch is closed, the operator manually rotates the shaft 332 forward. This causes the shaft 332 to drive the ratchet 3341 to rotate synchronously forward. At this time, the pawl 3342, which is engaged with the ratchet 3341, will briefly slide downward under the action of the teeth of the ratchet 3341, overcoming part of the elastic force of the spring 3346. After rotating to the next tooth slot with the teeth of the ratchet 3341, it will return to its original position under the action of the spring 3346, thus realizing the unidirectional forward rotation of the shaft 332 until the shaft 332 drives the strong magnet 32 ​​to move and completely move away from the iron block 31. At this time, the pawl 3342 engages in the corresponding tooth groove of the ratchet 3341. Under the continuous elastic force of the spring 3346, the pawl 3342 forms a reverse lock on the ratchet 3341, preventing the ratchet 3341 from rotating in the reverse direction. This locks the forward rotation position of the shaft 332, ensuring that the shaft 332 will not rotate in the reverse direction due to external forces or magnetic attraction, thus stably maintaining the unlocked position of the strong magnet 32 ​​and the unlocked state of the cabinet door 2. When it is necessary to inspect the distribution cabinet, unlock the cabinet door 2, and simultaneously cut off the main power supply, the operator manually pulls the push rod 3345 with one hand, causing the push rod 3345 to move downwards along the connecting frame 3343. The pawl 3342 slides down synchronously along the guide block 3344, moving away from the tooth groove of the ratchet 3341 and disengaging the engagement. At this point, the locking state of the ratchet 3341 is released, and the rotating shaft 332 is no longer restricted to unidirectional rotation. Next, the operator manually rotates the rotating shaft 332 in the opposite direction with their other hand, causing the rotating shaft 332 to move the strong magnet 32 ​​completely away from the iron block 31, ensuring that the cabinet door 2 is in the unlocked state. During this process, the reverse rotation of the rotating shaft 332 is simultaneously transmitted to the transmission structure 4, providing power for the subsequent downward movement of the L-shaped lever 5 to pull the main gate. This is also true when the cabinet door 2 is in the unlocked state. After unlocking, the operator only needs to release the push rod 3345. At this time, the compressed spring 3346 will push the push rod 3345 upward under its own elastic restoring force. The push rod 3345 drives the pressing plate 335 and the pawl 3342 to reset upward simultaneously. The pressing plate 335 returns to its initial position below the connecting bracket 3343. Under the continuous elastic force of the spring 3346, the pawl 3342 re-engages in the corresponding tooth groove of the ratchet 3341, and maintains engagement with the ratchet 3341 again, realizing one-way locking of the reverse rotation of the rotating shaft 332, ensuring that the rotating shaft 332 will not rotate accidentally during maintenance.

[0024] Furthermore, the flipping assembly 33 also includes a pressing plate 335 located below the connecting frame 3343 and fixedly connected to the end of the push rod 3345 away from the pawl 3342 for disengaging the pawl 3342 from the ratchet 3341.

[0025] When it is necessary to reverse the rotation of the shaft 332 to drive the L-shaped pull rod 5 downward through the linkage transmission structure 4 to achieve the main switch power cut-off, the operator does not need any additional tools. They only need to press the pressing plate 335 located below the connecting frame 3343 with one hand. After the pressing plate 335 receives downward pressure, it will evenly transmit the force to the push rod 3345 fixedly connected to it. Since the push rod 3345 longitudinally penetrates the connecting frame 3343 and forms a sliding engagement with it, and the pawl 3342 and push rod 3345 are far from the pressing plate 335... One end is fixedly connected, and the pawl 3342 also forms a longitudinal sliding engagement with the guide block 3344. Therefore, under the pressing force of the pressing plate 335, the push rod 3345 will slide smoothly downward along the guiding direction of the connecting frame 3343 and the guide block 3344. At the same time, the push rod 3345 will drive the pawl 3342 to slide downward synchronously. At this time, the spring 3346 sleeved on the push rod 3345 will be squeezed by the guide block 3344 and the connecting frame 3343, and gradually undergo compression deformation. The elastic force of the spring 3346 gradually increases, and as the pawl... As the pawl 3342 continues to move downwards, it gradually moves away from the tooth groove of the ratchet 3341 until it is completely disengaged from the ratchet 3341. At this point, the locking assembly 334's locking state on the ratchet 3341 is completely released, thereby releasing the restriction on the rotation of the shaft 332. The operator maintains the pressing state of the pressing plate 335, that is, uses the other hand to drive the shaft 332 to rotate in the opposite direction. After the maintenance is completed, when it is necessary to restore the locking state of the locking assembly 334 and fix the position of the shaft 332, the operator only needs to release the pressing plate 334. When the pressing force is applied, the compressed spring 3346 will push the push rod 3345 upward under its own elastic restoring force. The push rod 3345 will drive the pressing plate 335 and the pawl 3342 to return to their original positions simultaneously. The pressing plate 335 will return to its initial position below the connecting frame 3343. Under the continuous elastic force of the spring 3346, the pawl 3342 will re-engage in the corresponding tooth groove of the ratchet 3341 and maintain engagement with the ratchet 3341 again, thereby achieving one-way locking of the rotating shaft 332 and ensuring that the rotating shaft 332 will not rotate accidentally.

[0026] Furthermore, the transmission structure 4 includes a fixed box 41 fixedly installed on the distribution cabinet 1 and located on the side of the protective cover 331 away from the strong magnet 32, a gear 42 disposed in the fixed box 41, a rack 43 that moves longitudinally in the fixed box 41 corresponding to the side of the gear 42 and meshes with the gear 42, and an L-shaped frame 44 that passes through the distribution cabinet 1 and is slidably connected to the distribution cabinet 1. One end of the rotating shaft 332 away from the L-shaped connecting shaft 333 passes through the fixed box 41 and is rotatably connected in the fixed box 41. The gear 42 is fixedly sleeved on the rotating shaft 332. The two ends of the L-shaped frame 44 are fixedly connected to the side of the rack 43 away from the gear 42 and the L-shaped pull rod 5, respectively.

[0027] It is worth noting that, in order to ensure the movement stability of the rack 43, the guide rod 45 is fixedly installed inside the fixed box 41, and the rack 43 is slidably sleeved on the guide rod 45. Through the design of the guide rod 45, the lateral displacement of the rack 43 can be restricted, allowing it to only make longitudinal linear movement along the guide rod 45, thereby preventing the rack 43 from disengaging from the gear 42 due to offset and causing jamming, thus ensuring the meshing stability of the gear 42 and the rack 43. In addition, to ensure the stability of the L-shaped frame 44's movement, the distribution cabinet 1 is provided with a guide groove 11 for the longitudinal sliding of the L-shaped frame 44 at the position corresponding to the L-shaped frame 44. The guide groove 11 is longitudinally provided on the distribution cabinet 1 along the moving direction of the L-shaped frame 44, so that the L-shaped frame 44 passes through the guide groove 11 and moves longitudinally in a straight line along the guide groove 11, thereby limiting the lateral displacement of the L-shaped frame 44 and preventing the L-shaped frame 44 from deviating or shaking during the sliding process. This ensures that the L-shaped frame 44 can transmit the power of the rack 43 to the L-shaped tie rod 5, improving the safety and reliability of the structure.

[0028] Furthermore, to enhance operational safety, the L-shaped pull rod 5, L-shaped connecting shaft 333, and pressing plate 335 are all made of insulating material. Utilizing the non-conductive properties of the insulating material, leakage current inside the distribution cabinet is blocked from being conducted to the parts touched by the operator through the L-shaped pull rod 5, L-shaped connecting shaft 333, and pressing plate 335. This forms physical insulation protection, thereby preventing electric shock to the operator when operating the pressing plate 335 or accidentally touching the L-shaped connecting shaft 333 or L-shaped pull rod 5. This further enhances the electrical safety protection level of the distribution cabinet during use and maintenance from the operation end.

[0029] When the distribution cabinet needs to be used normally, requiring only unlocking cabinet door 2 and keeping the main switch closed, manually drive the rotating shaft 332 to rotate forward. At this time, gear 42 rotates synchronously forward. Immediately afterwards, gear 42 drives rack 43 to slide upward along guide rod 45. Rack 43 drives L-shaped frame 44 to slide upward along guide groove 11. L-shaped frame 44 drives L-shaped pull rod 5 to move upward away from the main switch gate, thus not exerting force on the main switch gate, and the main switch remains closed. However, when the distribution cabinet needs to be inspected, requiring unlocking cabinet door 2 and simultaneously cutting off the main switch power, the operation... First, the operator releases the locking assembly 334 by pressing the pressure plate 335, then drives the rotating shaft 332 to rotate in the opposite direction. The rotating shaft 332 drives the gear 42 to rotate in the opposite direction synchronously. The reverse rotation of the gear 42 drives the rack 43 to slide longitudinally downward along the guide rod 45. The downward sliding of the rack 43 drives the L-shaped frame 44 to slide synchronously downward along the guide groove 11. The L-shaped frame 44 drives the L-shaped pull rod 5 to move downward. During the downward movement of the L-shaped pull rod 5, it directly acts on the main switch gate, pulling the main switch gate downward to achieve the main switch power cut-off. At this time, the operator can open the cabinet door 2 to enter. During maintenance work, if it is necessary to temporarily open the main switch gate for purposes such as checking line continuity or adjusting components, operators can wear insulated gloves or use insulated tools to manually push the main switch gate upwards to open it. During this process, insulation protection measures can effectively prevent operators from coming into contact with live parts and thus avoid the risk of electric shock, ensuring the safety of the maintenance operation. After the maintenance work is completed, the staff must first confirm that all maintenance operations are in place and that components are installed according to specifications, and then wear insulated gloves or use insulated tools to push the main switch gate upwards. Push up the main gate and reset it to the closed position. Then manually drive the rotating shaft 332 to rotate forward to reset it. The rotating shaft 332 drives the gear 42 to rotate forward. The gear 42 drives the rack 43 to slide upward along the guide rod 45. The rack 43 drives the L-shaped frame 44 to slide upward along the guide groove 11. The L-shaped frame 44 drives the L-shaped pull rod 5 to move upward away from the main gate. At the same time, the rotating shaft 332 drives the strong magnet 32 ​​to approach the iron block 31 through the L-shaped connecting shaft 333. The two magnetically attract each other to lock and reset the cabinet door 2, completing the reset operation after the maintenance.

[0030] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A protective structure against electric shock for a factory power distribution cabinet, characterized in that: include The normally closed structure (3) includes an iron block (31) fixedly installed on the surface of the cabinet door (2) away from the hinged side of the distribution cabinet (1), a strong magnet (32) provided on the side of the distribution cabinet (1) for magnetic attraction with the iron block (31) to lock the cabinet door (2), and a flipping component (33) provided on the cabinet door (2) and connected to the strong magnet (32) for making the strong magnet (32) rotate forward and backward and driving the strong magnet (32) to approach or move away from the iron block (31). L-shaped pull rod (5), the L-shaped pull rod (5) is installed in the power distribution cabinet (1) for pulling the main switch gate down to cut off the power; The transmission structure (4) is located on one side of the power distribution cabinet (1) and connected to the flipping component (33) and the L-shaped pull rod (5) for rotating with the flipping component (33) in the forward and reverse directions, thereby driving the L-shaped pull rod (5) to move upward away from the main gate or downward to pull the main gate.

2. The anti-electric shock protection structure for factory power distribution cabinets according to claim 1, characterized in that: An insulating pad (311) is fixedly installed on the side of the iron block (31) near the cabinet door (2).

3. The anti-electric shock protection structure for factory power distribution cabinets according to claim 1, characterized in that: The flipping assembly (33) includes a protective cover (331) fixedly installed on the side of the power distribution cabinet (1) corresponding to the strong magnet (32), a rotating shaft (332) passing through the protective cover (331) and rotatably connected to the protective cover (331), an L-shaped connecting shaft (333) fixedly connected to the end of the rotating shaft (332) away from the protective cover (331) and fixedly connected to the side of the strong magnet (32), and a locking assembly (334) provided on the protective cover (331) and connected to the rotating shaft (332) for locking the rotating shaft (332) in the forward rotation position or unlocking the rotating shaft (332) to make the rotating shaft (332) rotate in the reverse direction.

4. The anti-electric shock protection structure for factory power distribution cabinets according to claim 3, characterized in that: The locking assembly (334) includes a ratchet (3341) fixedly sleeved on the rotating shaft (332) and located inside the protective cover (331), a connecting bracket (3343) fixedly installed at the lower opening of the protective cover (331), a guide block (3344) fixedly installed on the connecting bracket (3343), a pawl (3342) longitudinally penetrating the guide block (3344) and slidably connected to the guide block (3344) for engaging with the ratchet (3341), and a pawl (3342) longitudinally penetrating the connecting bracket (3343). A push rod (3345) is slidably connected to the connecting frame (3343) at a position below the guide block (3344), and a spring (3346) is sleeved on the push rod (3345) to drive the pawl (3342) to maintain engagement with the ratchet (3341). The two ends of the spring (3346) are respectively fixedly connected to the end of the guide block (3344) near the push rod (3345) and the connecting frame (3343). The push rod (3345) is fixedly connected to the end of the pawl (3342) away from the ratchet (3341).

5. The anti-electric shock protection structure for factory power distribution cabinets according to claim 4, characterized in that: The flipping assembly (33) also includes a pressing plate (335) located below the connecting frame (3343) and fixedly connected to the end of the push rod (3345) away from the pawl (3342) for disengaging the pawl (3342) from the ratchet (3341).

6. The anti-electric shock protection structure for factory power distribution cabinets according to claim 4, characterized in that: The transmission structure (4) includes a fixed box (41) fixedly installed on the distribution cabinet (1) and located on the side of the protective cover (331) away from the strong magnet (32), a gear (42) set in the fixed box (41), a rack (43) that moves longitudinally in the fixed box (41) corresponding to the side of the gear (42) and meshes with the gear (42), and an L-shaped frame (44) that passes through the distribution cabinet (1) and is slidably connected to the distribution cabinet (1). One end of the rotating shaft (332) away from the L-shaped connecting shaft (333) passes through the fixed box (41) and is rotatably connected in the fixed box (41). The gear (42) is fixedly sleeved on the rotating shaft (332). The two ends of the L-shaped frame (44) are fixedly connected to the side of the rack (43) away from the gear (42) and the L-shaped pull rod (5), respectively.

7. The anti-electric shock protection structure for factory power distribution cabinets according to claim 6, characterized in that: The fixing box (41) is fixedly installed inside the guide rod (45), and the rack (43) is slidably sleeved on the guide rod (45).

8. The anti-electric shock protection structure for factory power distribution cabinets according to claim 6, characterized in that: The distribution cabinet (1) has a guide groove (11) at the position corresponding to the L-shaped frame (44) for longitudinal sliding of the L-shaped frame (44).

9. The anti-electric shock protection structure for factory power distribution cabinets according to claim 5, characterized in that: The L-shaped pull rod (5), L-shaped connecting shaft (333) and pressing plate (335) are all made of insulating material.

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