Shielding distribution box

Abstract

The utility model discloses a shielding distribution box, which relates to the technical field of power equipment and comprises a box body, a box door and a hoisting piece. The front end of the box body is provided with an access hole communicated with the interior of the box body, the rear end of the box body is provided with a plurality of plug connectors, each plug connector is used for being connected with external equipment, and each plug connector is detachably connected with the box body; the box door comprises a box door body and an operation handle, the box door body is hinged to the access hole, the operation handle is movably arranged on the side, away from the access hole, of the box door body, and the operation handle is used for being held by an operator to drive the box door body to rotate towards or away from the access hole; the access hole is opened or closed; the hoisting piece is arranged at the top end of the box body, and the hoisting piece is used for being connected with transfer equipment so as to operate the shielding distribution box to move; the technical scheme provided by the utility model is convenient for operators to overhaul and maintain the shielding distribution box.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a shielded distribution box. Background Technology

[0002] Shielded distribution boxes used in modular shelters can accommodate various power supplies and load outputs, and their internal structures are often quite complex, thus requiring frequent inspection and maintenance. Existing shielded distribution boxes suitable for modular shelters are difficult to operate during inspection and maintenance and cannot meet the maintenance needs of the confined space of modular shelters. Utility Model Content

[0003] The main purpose of this utility model is to propose a shielded distribution box, which aims to improve the convenience of inspection and maintenance of the shielded distribution box.

[0004] To achieve the above objectives, the shielded distribution box proposed in this utility model includes:

[0005] The enclosure has an inspection port at the front end that connects to the interior of the enclosure, and multiple connectors at the rear end of the enclosure. Each connector is used to connect to external equipment, and each connector is detachably connected to the enclosure.

[0006] A door, comprising a door body and an operating handle, wherein the door body is hinged to an access panel, and the operating handle is movably disposed on the side of the door body away from the access panel. The operating handle is for an operator to grip and rotate the door body toward or away from the access panel to open or close the access panel.

[0007] A lifting device is located at the top of the enclosure and is used for connecting transfer equipment to operate the shielded distribution box for movement.

[0008] In one embodiment, the shielded distribution box further includes a hinge, which is located at the upper end of the access port. The box door body is hinged to the upper end of the access port via the hinge, and the operating handle is hinged to the box door body in the vertical direction.

[0009] In one embodiment, the operating handle has a gripping end and two connecting ends located on opposite sides of the gripping end. The door body has two mounting seats on the side away from the inspection port, and the two mounting seats are rotatably connected to the two connecting ends one-to-one.

[0010] The mounting base has a clearance opening located away from the hinge. When the access panel is closed, the connecting end protrudes from the clearance opening so that the operating handle is attached to the door body.

[0011] In one embodiment, the mounting base further has a baffle wall disposed opposite to the clearance opening, the baffle wall being disposed close to the hinge member, and the baffle wall being used to abut the connecting end when the operating handle is swung toward the side close to the hinge member.

[0012] In one embodiment, the shielded distribution box further includes an elastic support member at least partially disposed within the box body, with both ends of the elastic support member being movably connected to the inner wall of the box body and the box door, respectively, and the elastic support member being used to support the box door when the inspection port is opened.

[0013] In one embodiment, the lifting component is configured as a lifting ring, and multiple lifting rings are provided, which are spaced apart on the top of the box body, and each lifting ring is detachably connected to the box body.

[0014] In one embodiment, the shielded distribution box further includes a shock-absorbing assembly located at the bottom of the box body. The shock-absorbing assembly includes a shock-absorbing element and a base plate. The shock-absorbing element connects the base plate and the box body and is used to absorb the impact force transmitted from the base plate to the box body.

[0015] In one embodiment, the rear end of the housing is provided with a plurality of fasteners, which are respectively provided on the periphery of the plurality of plug-in members. The plurality of fasteners are used to connect the dustproof member so that the dustproof member covers the plurality of plug-in members.

[0016] In one embodiment, the enclosure is equipped with a circuit breaker and a surge arrester, the surge arrester being detachably installed in the enclosure from the inspection port.

[0017] In one embodiment, when the access panel is closed, the door has a first state of being locked to the enclosure and a second state of being unlocked from the enclosure. The door also includes a status indicator on the door body, which is used to indicate the status of the door.

[0018] The technical solution of this utility model involves setting up a shielded distribution box, including a box body, a door, and a lifting device. A maintenance port is provided at the front of the box body, connecting to the interior of the box. The door body is hinged to the maintenance port and has a movable operating handle for operators to grip, facilitating access to the internal circuit components for inspection and maintenance. Multiple connectors are provided at the rear of the box body, allowing the shielded distribution box to connect to various external power supply equipment and electrical loads. These connectors are detachably connected to the box body for easy inspection and replacement. A lifting device is provided at the top of the box body, allowing transport equipment to connect to the box and move the shielded distribution box from its installation position, thus improving the convenience of maintenance and repair. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of an embodiment of the shielded distribution box provided by this utility model;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 for Figure 1 A schematic diagram showing the closed state of the shielded distribution box door;

[0023] Figure 4 for Figure 1 A structural schematic diagram of the shielded distribution box from another angle;

[0024] Figure 5 for Figure 3 A structural schematic diagram of the shielded distribution box from another angle;

[0025] Figure 6 for Figure 1 A structural schematic diagram of a shielded distribution box from another angle;

[0026] Figure 7 for Figure 1 A structural schematic diagram of a shielded distribution box from another angle;

[0027] Figure 8 for Figure 3A schematic diagram of the structure of one embodiment of the mid-base plate.

[0028] Explanation of icon numbers:

[0029] 100. Shielded distribution box; 10. Box body; 11. Inspection port; 12. Connector; 13. Circuit breaker; 14. Surge arrester; 15. Status indicator light; 161. Voltmeter; 162. Ammeter; 163. Frequency meter; 17. Operating button; 20. Box door; 21. Box door body; 22. Operating handle; 221. Grip end; 222. Connection end; 223. Mounting base; 2231. Clearance opening; 2232. Baffle; 23. Status indicator; 30. Lifting component; 31. Lifting ring; 40. Hinge; 50. Elastic support component; 60. Vibration damping assembly; 61. Vibration damping component; 62. Base plate.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] The shielded distribution box achieves its shielding function through an electromagnetic shielding cabinet design. The metal casing forms a Faraday cage structure, preventing external electromagnetic waves from interfering with internal equipment and preventing the leakage of internal electromagnetic signals.

[0035] Shielded distribution boxes used in modular shelters can accommodate various power supplies and load outputs, and their internal structures are often quite complex, thus requiring frequent inspection and maintenance. Existing shielded distribution boxes suitable for modular shelters are difficult to operate during inspection and maintenance and cannot meet the maintenance needs of the confined space of modular shelters.

[0036] This utility model proposes a shielded distribution box.

[0037] Please see Figures 1 to 8 In one embodiment of this utility model, the shielded distribution box includes a box body 10, a door 20, and a lifting component 30. The front end of the box body 10 has an inspection port 11 communicating with the interior of the box body 10, and the rear end of the box body 10 has multiple connectors 12. Each connector 12 is used to connect to external equipment, and each connector 12 is detachably connected to the box body 10. The door 20 includes a door body 21 and an operating handle 22. The door body 21 is hinged to the inspection port 11, and the operating handle 22 is movably located on the side of the door body 21 away from the inspection port 11. The operating handle 22 is used by an operator to hold and rotate the door body 21 toward or away from the inspection port 11 to open or close the inspection port 11. The lifting component 30 is located at the top of the box body 10 and is used for connecting to transfer equipment to operate the shielded distribution box for movement.

[0038] The shielded power distribution box 100 of this utility model can be used in shelters, providing multi-source power supply management. It can support various power inputs such as mains power, parking power take-off, driving power take-off, and diesel generator, and can meet the power supply needs in different scenarios. Among them, the multiple plug-in connectors 12 located on the rear side of the box body 10 can be respectively set as power take-off connectors and power consumption connectors of the shielded power distribution box 100. The shielded power distribution box 100 can be connected to the power inputs of mains power, parking power take-off, driving power take-off, and diesel generator through the power take-off connectors, and can be connected to various loads through the power consumption connectors, which can supply power to various loads such as antennas, chargers, water-cooled units, vacuum pumps, air conditioners, radar, and control cabinets.

[0039] It is understandable that the shielded distribution box 100 of this invention has multiple power inputs and multiple load power supply functions. Therefore, its internal structure is complex and requires regular inspection and maintenance. To facilitate quick inspection and maintenance of the shielded distribution box 100, this invention provides multiple plug-in connectors 12 that are detachably connected to the box body 10, allowing operators to perform regular maintenance and replacement of the connectors 12 based on their wear and tear. The plug-in connectors 12 can be detachably connected to the box body 10 using screws. Simultaneously, the circuit components inside the box body 10 are complex and require regular inspection and maintenance. Therefore, the shielded distribution box 100 is provided with an inspection port 11, and a door 20 is hinged to the inspection port 11. The door 20 allows the inspection port 11 to be opened and closed, facilitating the operator's inspection and maintenance of the circuit components inside the box body 10. Meanwhile, the enclosure door 20 is further provided with an enclosure door body 21 and an operating handle 22. When the operator opens and closes the enclosure door body 21, he / she can move the enclosure door body 21 by holding the operating handle 22, so as to realize the opening and closing of the enclosure door body 21 on the inspection port 11, which helps the operator to open the inspection port 11 to carry out maintenance of the internal equipment of the shielded distribution box 100.

[0040] Furthermore, when maintaining and repairing the shielded distribution box 100, it is necessary to move it from its installation location. During this process, the shielded distribution box 100 can be moved to a designated location for maintenance and repair. This can be achieved by connecting the lifting device 30, located on top of the box 10, to the output end of a transfer device. The output end of the transfer device can be inserted into the lifting device 30, allowing the entire shielded distribution box 100 to be lifted and moved. This facilitates the removal of the shielded distribution box 100 from its installation location to a designated location for maintenance and repair, avoiding equipment damage and personnel safety risks caused by manual handling.

[0041] The technical solution of this utility model involves setting a shielded distribution box 100, including a box body 10, a door 20, and a lifting component 30. An inspection port 11 communicating with the interior of the box body 10 is provided at the front end of the box body 10. A door body 21 is hinged to the inspection port 11, and a movable operating handle 22 is provided on the door body 21 for the operator to grip, facilitating the opening of the inspection port 11 for inspection and maintenance of internal circuit components. Simultaneously, multiple connectors 12 are provided at the rear end of the box body 10, allowing the shielded distribution box 100 to be connected to multiple... The shielded distribution box 100 is connected to external power supply equipment and electrical loads, and is provided with a plug-in 12 that is detachably connected to the box 10, so that operators can inspect and replace the plug-in 12. At the same time, a lifting device 30 is provided at the top of the box 10, so that the transfer equipment can be connected to the box 10 through the lifting device 30, and then the shielded distribution box 100 can be transferred, so that the shielded distribution box 100 can be moved from the installation position, making it easier for operators to inspect and maintain the shielded distribution box 100, thereby improving the convenience of inspection and maintenance of the shielded distribution box 100.

[0042] like Figure 1 , Figure 3 As shown, in one embodiment, the shielded distribution box further includes a hinge 40, which is located at the upper end of the inspection port 11. The box door body 21 is hinged to the upper end of the inspection port 11 via the hinge 40, and the operating handle 22 is hinged to the box door body 21 in the vertical direction.

[0043] The hinge 40 can be configured as a hinge, and multiple hinges can be arranged sequentially along the horizontal plane above the access port 11. It is understood that when the hinge 40 is located at the upper end of the access port 11, and the door body 21 is hinged to the upper end of the access port 11 via the hinge 40, the door body 21 rotates upwards to open the access port 11 and downwards to close it. The direction of movement of the door body 21 is vertical, thus adapting to the narrow installation environment of the shielded distribution box 100, avoiding the left and right doors from occupying the operating space on both sides, and being compatible with the layout of the equipment mounting holes reserved on the side, without interfering with the installation and maintenance of adjacent equipment. When the operating handle 22 is also hinged to the door body 21 in a vertical direction, the direction of movement of the operating handle 22 is the same as the opening and closing direction of the door body 21, making it convenient for the operator to open and close the door body 21 by operating the handle 22.

[0044] like Figure 1 , Figure 2 , Figure 3As shown, in one embodiment, the operating handle 22 has a gripping end 221 and two connecting ends 222 disposed on opposite sides of the gripping end 221. The door body 21 is provided with two mounting seats 223 on the side away from the inspection port 11. The two mounting seats 223 are rotatably connected to the two connecting ends 222 one by one.

[0045] The mounting base 223 has a clearance opening 2231 located away from the hinge member 40. When the access port 11 is closed by the door body 21, the connecting end 222 extends out from the clearance opening 2231 so that the operating handle 22 fits against the door body 21.

[0046] The operating handle 22 can be U-shaped, with two connecting ends 222 located in the vertical section of the U-shape and the gripping end 221 located in the horizontal section. The connecting ends 222 can be rotatably connected to the mounting base 223 via pins. It is understood that, since the clearance opening 2231 is located on the side of the mounting base 223 away from the hinge 40, when the cabinet door 21 is closed to the access port 11, the clearance opening 2231 is located below the hinge 40. After the connecting end 222 protrudes from the clearance opening 2231, the entire operating handle 22 is vertically positioned and can fit snugly against the cabinet door 21. This design reduces the space occupied by the operating handle 22 when the cabinet door 21 is closed to the access port 11, making it suitable for the narrow installation space of the shielded distribution box 100.

[0047] like Figure 2 As shown, in one embodiment, the mounting base 223 further has a baffle 2232 disposed opposite to the clearance opening 2231. The baffle 2232 is disposed near the hinge member 40, and when the operating handle 22 swings toward the side near the hinge member 40, the baffle 2232 is used to abut against the connecting end 222.

[0048] Understandably, since the baffle 2232 and the clearance opening 2231 are positioned opposite each other, and the baffle 2232 is located close to the hinge 40, when the door body 21 is closed in the access opening 11, the baffle 2232 is positioned above the clearance opening 2231. When the operator holds the operating handle 22 and drives the door 20 to flip upwards and open, the baffle 2232 abuts against the connecting end 222, preventing the operating handle 22 from continuing to flip upwards towards the door body 21, and preventing the operator's hand from being pinched and injured by the operating handle 22 and the door body 21. Furthermore, after the connecting end 222 abuts against the baffle 2232, the operating handle 22 can be supported by the door body 21, making it easier to apply force when the operating handle 22 drives the door 20 to flip open.

[0049] like Figure 1As shown, in one embodiment, the shielded distribution box further includes an elastic support member 50 at least partially disposed within the box body 10. The two ends of the elastic support member 50 are movably connected to the inner wall of the box body 10 and the box door 20, respectively. The elastic support member 50 is used to support the box door 20 when the inspection port 11 is opened.

[0050] The support components can be elastic connection structures such as gas springs, gas rods, or hydraulic rods. Understandably, since the access panel 11 is opened and closed by flipping the door body 21 upwards, operators need to access and maintain the electrical components inside the enclosure 10 through the access panel 11 after the door body 21 is flipped upwards. To prevent the door body 21 from tipping down under its own weight, operators need to support the door body 21 with one hand while performing internal maintenance on the enclosure 10 with the other, which is very inconvenient. Therefore, an elastic support component 50 is provided to elastically connect the inner wall of the enclosure 10 and the door 20. When the door 20 is opened, the elastic support component 50 supports the door 20, preventing it from falling, thereby further improving the convenience of maintenance for operators of the shielded distribution box 100.

[0051] like Figure 5 As shown, in one embodiment, the lifting component 30 is configured as a lifting ring 31. Multiple lifting rings 31 are provided and spaced apart on the top of the housing 10. Each lifting ring 31 is detachably connected to the housing 10. Screw holes can be pre-set on the top of the housing 10, and the lifting rings 31 are threadedly connected to these screw holes to achieve a detachable connection. Each lifting ring 31 can also have a through hole for the lifting equipment to pass through. The multiple lifting rings 31 can be distributed at the four corners of the top of the housing 10. When the shielded distribution box 100 is lifted by inserting the lifting equipment through the through holes of the multiple lifting rings 31, the shielded distribution box 100 is evenly stressed and will not tilt. Meanwhile, the detachable design of the lifting ring 31 allows the lifting ring 31 to be removed after the shielded distribution box 100 is installed in the installation position, reducing the external protruding structure of the shielded distribution box 100 and helping to adapt to the narrow installation environment of the shielded distribution box 100.

[0052] like Figure 1 , Figure 3 As shown, in one embodiment, the shielded distribution box further includes a shock-absorbing component 60, which is disposed at the bottom of the box body 10. The shock-absorbing component 60 includes a shock-absorbing element 61 and a base plate 62. The shock-absorbing element 61 connects the base plate 62 and the box body 10. The shock-absorbing element 61 is used to absorb the impact force transmitted from the base plate 62 to the box body 10.

[0053] Understandably, after the shielded distribution box 100 is lifted by the lifting ring 31 and transferred to the designated location, it needs to be lowered. When lowering the shielded distribution box 100, to avoid excessive weight, the box would experience a significant impact upon landing, potentially damaging its internal circuitry and affecting its usability. Therefore, this invention incorporates a vibration damping component at the bottom of the box 10 to reduce the impact on the shielded distribution box 100 and prevent damage to its internal structure. The vibration damping component 61 can be configured as a cylinder, hydraulic cylinder, or elastic support 50. The base plate 62 provides a stable mounting interface for the elastic support 50 (such as a rubber pad, spring, or gas spring), distributing concentrated loads evenly across multiple elastic support 50s and preventing overloading of individual support components.

[0054] Optionally, the rear end of the housing 10 is provided with a plurality of fasteners, which are respectively provided on the periphery of the plurality of plug-in parts 12. The plurality of fasteners are used to connect the dustproof parts so that the dustproof parts cover the plurality of plug-in parts 12.

[0055] The dustproof component can be a dust cover or a dust cover. When the dustproof component is a dust cover, the fastener can be a screw protruding from the rear side of the enclosure 10. Multiple parts of the dust cover can be hooked onto the corresponding screws to cover the multiple plug-in components 12 located on the rear side of the enclosure 10. When the shielded distribution box 100 is not in use, it can provide dustproof and waterproof functions for the plug-in components 12, thereby ensuring the service life of the multiple plug-in components 12.

[0056] like Figure 4 As shown, in one embodiment, the enclosure 10 is provided with a circuit breaker 13 and a surge arrester 14, and the surge arrester 14 is detachably installed in the enclosure 10 from the inspection port 11.

[0057] The enclosure 10 includes a mounting panel on which the circuit breaker 13 and surge arrester 14 are detachably mounted. The circuit breaker 13 provides overcurrent and short-circuit protection, protecting branch outputs and ensuring short-circuit and overload protection for input / output control circuits. Simultaneously, specific branches within the enclosure 10 (such as three-phase sockets or source transformers) can share the circuit breaker 13 to limit branch current, disconnect faulty circuits, and ensure power supply safety. The surge arrester 14 prevents damage from lightning overvoltages to the shielded distribution box 100 and connected electrical equipment, protecting the system's electrical safety. The surge arrester 14 can be modularly designed for direct installation and removal from the panel, facilitating quick replacement of faulty components and improving maintenance efficiency.

[0058] In addition, the mounting panel can also be equipped with a voltmeter 161, an ammeter 162, a frequency meter 163, a status indicator light 15, etc., which can be used to display information such as the working voltage, current, frequency, and working status of the circuit breaker 13. Furthermore, the mounting panel can also be equipped with an operation button 17.

[0059] like Figure 1 , Figure 3 As shown, when the access port 11 is closed by the door 20, the door 20 has a first state of being locked to the box body 10 and a second state of being unlocked from the box body 10. The door 20 also includes a status indicator 23 disposed on the door body 21, which is used to indicate the status of the door 20.

[0060] This design allows operators to easily obtain the locking information between the door 20 and the enclosure 10 via the status indicator 23 located on the door body 21. This prevents the door 20 from being accidentally opened after the inspection port 11 is closed, as it may not be locked to the enclosure 10. It also prevents operators from opening and closing the door 20 while it is locked to the enclosure 10, thus avoiding interference with the maintenance of the shielded distribution box 100.

[0061] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A shielded electrical distribution box, characterized by, include: The enclosure has an inspection port at the front end that connects to the interior of the enclosure, and multiple connectors at the rear end of the enclosure. Each connector is used to connect to external equipment, and each connector is detachably connected to the enclosure. The door includes a door body and an operating handle. The door body is hinged to the access port. The operating handle is movably located on the side of the door body away from the access port. The operating handle is for the operator to hold and rotate the door body toward or away from the access port to open or close the access port. as well as A lifting device is located at the top of the enclosure and is used to connect to transfer equipment to operate the shielded distribution box for movement.

2. The shielded distribution box as described in claim 1, characterized in that, The shielded distribution box also includes a hinge, which is located at the upper end of the inspection port. The box door body is hinged to the upper end of the inspection port via the hinge, and the operating handle is hinged to the box door body in the vertical direction.

3. The shielded electrical distribution box of claim 2, wherein, The operating handle has a grip end and two connecting ends located on opposite sides of the grip end. The door body has two mounting seats on the side away from the inspection port, and the two mounting seats are rotatably connected to the two connecting ends one-to-one. The mounting base has a clearance opening located away from the hinge. When the access panel is closed, the connecting end protrudes from the clearance opening so that the operating handle is attached to the door body.

4. The shielded electrical distribution box of claim 3, wherein, The mounting base also has a baffle wall disposed opposite to the clearance opening. The baffle wall is disposed close to the hinge member, and when the operating handle is swung toward the side closer to the hinge member, the baffle wall is used to abut the connecting end.

5. The shielded electrical distribution box of claim 1, wherein, The shielded distribution box also includes at least a portion of an elastic support member disposed within the box body. The two ends of the elastic support member are movably connected to the inner wall of the box body and the box door, respectively. The elastic support member is used to support the box door when the inspection port is opened.

6. The shielded electrical distribution box of claim 1, wherein, The lifting component is configured as a lifting ring, and there are multiple lifting rings. The multiple lifting rings are distributed at intervals on the top of the box, and each lifting ring is detachably connected to the box.

7. The shielded electrical distribution box of claim 1, wherein, The shielded distribution box also includes a shock-absorbing component, which is located at the bottom of the box. The shock-absorbing component includes a shock absorber and a base plate. The shock absorber connects the base plate and the box and is used to absorb the impact force transmitted from the base plate to the box.

8. The shielded electrical distribution box of claim 1, wherein, The rear end of the housing is provided with a plurality of fasteners, which are respectively provided on the periphery of the plurality of plug-in components. The plurality of fasteners are used to connect the dustproof component so that the dustproof component covers the plurality of plug-in components.

9. The shielded electrical distribution box of claim 1, wherein, The enclosure is equipped with a circuit breaker and a surge arrester, with the surge arrester being detachably installed inside the enclosure from the inspection port.

10. The shielded electrical distribution box of any one of claims 1 to 9, wherein, When the access panel is closed, the door has a first state of being locked to the enclosure and a second state of being unlocked from the enclosure. The door also includes a status indicator on the door body, which is used to indicate the status of the door.

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