Electric energy metering box with limiting anti-falling hinge

Abstract

The application relates to the technical field of electric energy metering boxes, and discloses an electric energy metering box with a limiting anti-falling hinge, which comprises a box body and electrical elements installed in the box body, the box body comprises a box door, side plates, a bottom plate and a top plate, one side of the box door is hinged to the side plates, a limiting groove is formed in the inner wall of the box door, a sliding block is slidably arranged in the limiting groove, the sliding block slides towards or away from the bottom plate, a grounding copper sheet is arranged on the side of the sliding block close to the bottom plate, the grounding copper sheet is electrically connected with the grounding wires of the electrical elements and the box body, and a limiting assembly for driving the sliding block to slide towards or away from the bottom plate is arranged on the box door. The limiting assembly is used for controlling the sliding of the sliding block and the grounding copper sheet, so that when the box door is opened, the grounding copper sheet can realize automatic grounding, manual hanging of the grounding wire is not needed, and the safety during use of the electric energy metering box is improved.

Description

Technical Field

[0001] This application relates to the technical field of electricity metering boxes, and in particular to an electricity metering box with a limiting anti-detachment hinge. Background Technology

[0002] Electricity metering boxes are key devices in power systems used to measure electricity consumption. They integrate various metering instruments and auxiliary equipment to achieve accurate measurement and recording of electrical energy. The security of electricity metering boxes directly affects the operational safety of maintenance personnel and their anti-theft performance.

[0003] In related technologies, an electricity metering box includes a box body and electrical components installed within the box body. The box body includes a door, side panels, a bottom panel, and a top panel. One side of the door is connected to the side panel via a metal hinge, allowing the door to be opened and closed by rotation. The other side is fixed to the side panel via a mechanical lock to lock the door. A grounding busbar is installed within the box body, and the grounding wires of the electrical components are electrically connected to the grounding busbar. The grounding busbar is connected to a grounding grid to achieve grounding of the entire box body.

[0004] However, during the maintenance of the aforementioned electricity metering box, the grounding busbar may be at risk of corrosion or loosening over long-term use. Therefore, after opening the door, staff need to manually hang a grounding wire at the cable joint to ensure that even if a fault occurs, the box and all equipment inside the box can remain grounded, ensuring the safety of maintenance operations. However, if staff forget to hang the grounding wire, there is a risk of electric shock due to misoperation, so this needs to be improved. Summary of the Invention

[0005] To improve the safety performance of electricity metering boxes, this application provides an electricity metering box with a limit hinge to prevent detachment.

[0006] The energy metering box with a limiting and anti-detachment hinge provided in this application adopts the following technical solution:

[0007] An electricity metering box with a limiting and anti-detachment hinge includes a box body and electrical components installed in the box body. The box body includes a door, a side panel, a bottom plate, and a top plate. One side of the door is hinged to the side panel, and a hinge seat is provided on the side panel. A rotating shaft is provided on one side of the door, and the rotating shaft passes through the hinge seat. A limiting groove is formed on the inner wall of the door, and a slider is slidably arranged in the limiting groove. The slider slides towards or away from the bottom plate. A grounding copper plate is provided on the side of the slider near the bottom plate. The grounding copper plate is electrically connected to the grounding wire of the electrical components and the box body. A limiting component is provided on the door to drive the slider to slide towards or away from the bottom plate.

[0008] By adopting the above technical solution, when the box door is opened, the limiting component will push the slider towards the bottom plate, so that the grounding copper sheet is grounded. This ensures that after the box door is opened, the box body and the electrical components inside the box will be automatically and forcibly grounded, reducing the risk of electric shock due to staff forgetting to hang the grounding wire and improving the safety of the electricity metering box.

[0009] Optionally, the limiting assembly includes a connecting spring disposed on the side of the slider away from the base plate, a connecting rod rotatably disposed on the inner wall of the side plate, and a mounting block slidably disposed on the inner wall of the door. One end of the connecting spring is disposed on the groove wall of the limiting groove, and the other end is connected to the slider. The connecting spring has a tendency to drive the slider to slide towards the base plate. One end of the connecting rod is rotatably connected to the inner wall of the side plate, and the other end is rotatably disposed on the mounting block. The inner wall of the door is also provided with a sliding groove for the mounting block to slide. The sliding groove communicates with the limiting groove, and the mounting block slides towards or away from the slider.

[0010] By adopting the above technical solution, when the enclosure door is closed, the mounting block is located on the side of the slider closest to the bottom plate, thus limiting the slider and grounding copper plate to a position away from the bottom plate. During the opening of the enclosure door, the connecting rod rotates relative to the side plate and the mounting block, simultaneously driving the mounting block to slide away from the slider in the sliding groove. When the mounting block moves out of the limiting groove, it releases its constraint on the slider, allowing the slider to slide closer to the bottom plate under the action of the connecting spring, thereby grounding the grounding copper plate and achieving stable grounding of the enclosure and electrical components. When closing the enclosure door, the slider can be moved away from the bottom plate first, and then the enclosure door can be rotated in the closing direction, causing the connecting rod to rotate relative to the side plate and the mounting block. The connecting rod then drives the mounting block to slide closer to the slider in the sliding groove until the mounting block slides to the side of the slider closest to the bottom plate. At this point, the slider can be released, and the enclosure door can be closed further, moving the mounting block directly below the slider to reset it to the side of the slider closest to the bottom plate, facilitating grounding of the enclosure and electrical components the next time the enclosure door is opened.

[0011] Optionally, the mounting block has a guide slope on the side near the slider. The slider includes a guide part and a connecting part. The guide part has a guide slope on the side near the mounting block. The connecting part is connected between the guide part and the grounding copper sheet. When the mounting block slides towards the guide part, the guide part slides away from the base plate along the guide slope.

[0012] By adopting the above technical solution, when the cabinet door needs to be closed, it can be directly rotated in the closing direction. At this time, the connecting rod will rotate relative to the side plate and the mounting block. Simultaneously, the connecting rod drives the mounting block to slide closer to the slider, so that the guide slope contacts the guide slope. The mounting block pushes the guide part away from the bottom plate, causing the grounding copper piece to move into the limiting groove. This ensures that the grounding copper piece will not obstruct the closing of the cabinet door, and there is no need to manually move the slider away from the bottom plate. When the cabinet door is closed, the mounting block presses the slider upward through the guide slope, requiring no additional operating force. The closing action naturally resets the grounding copper piece, facilitating the closing of the cabinet door. In addition, the cooperation of the guide slope and the guide slope converts the lateral movement of the mounting block into the longitudinal movement of the slider, reducing frictional loss and minimizing the risk of the mounting block jamming when the connecting spring pushes the slider towards the side closer to the bottom plate.

[0013] Optionally, an adjusting plate is slidably disposed in the limiting groove. The adjusting plate is disposed on the side of the connecting spring away from the slider. An adjusting bolt is disposed on the side of the adjusting plate away from the connecting spring. A fastening screw hole is provided on the door for threaded connection with the adjusting bolt. The fastening screw hole communicates with the limiting groove. An adjusting groove is also provided on the door for communication with the fastening screw hole. The bolt head of the adjusting bolt is disposed in the adjusting groove.

[0014] By adopting the above technical solution, when the electricity metering box experiences frequent door opening and closing after long-term use, causing elastic fatigue in the connecting spring, a screwdriver or other tool can be inserted into the adjustment slot. By rotating the adjustment bolt, the bolt is moved closer to the adjustment plate and the connecting spring, increasing the compression of the connecting spring and strengthening its preload. This maintains the driving effect of the connecting spring on the slider and the grounding copper plate, ensuring stable grounding of the grounding copper plate when the box door is opened. The adjustment slot facilitates the rotation of the adjustment bolt.

[0015] Optionally, the connecting rod includes a sliding part connected to the mounting block and a fixing part connected to the inner wall of the side plate. The sliding part has a movable groove for the fixing part to slide. A limiting ring is provided on the groove wall of the movable groove. An anti-detachment block is provided at one end of the fixing part near the sliding part. The inner diameter of the limiting ring is smaller than the width of the anti-detachment block.

[0016] By adopting the above technical solution, when the cabinet door is opened, the fixed part and the sliding part first slide away from each other until the anti-detachment block abuts against the limiting ring. The cabinet door then continues to open, at which point the connecting rod drives the mounting block to slide away from the slider in the sliding groove. Then, the slider slides towards the bottom plate under the action of the connecting spring, ensuring the grounding copper sheet is grounded. This design prevents the grounding copper sheet from extending out of the limiting groove and contacting the ground immediately upon opening the cabinet door, thus minimizing friction between the door and the ground. This prevents the grounding copper sheet from obstructing the door from opening completely; instead, it extends out of the limiting groove and contacts the ground only after the door has opened to a certain angle. This facilitates maintenance and other operations after opening the door without affecting the grounding effect. Furthermore, the inner diameter of the limiting ring is smaller than the width of the anti-detachment block, making it less likely for the fixed part to separate from the sliding part, resulting in high overall stability of the connecting rod.

[0017] Optionally, the movable groove is provided with a limiting member on the groove wall. The limiting member is located on the side of the limiting ring away from the anti-detachment block. The fixing part is provided with a fixing groove for the limiting member to extend into. When the limiting ring abuts against the anti-detachment block, the limiting member extends into the fixing groove.

[0018] By adopting the above technical solution, when the door is closed, the limiting component engages in the fixing groove, fixing the fixed part and the sliding part relative to each other. Therefore, the connecting rod initially moves the mounting block closer to the slider, causing the guide slope to abut against the guide slope, pushing the slider away from the base plate. This causes the grounding copper plate to retract into the limiting groove. Then, as the grounding copper plate no longer contacts the ground, the friction between the door and the ground decreases, making closing easier. In contrast, without the limiting component, the sliding and fixed parts initially slide closer to each other when closing. During this process, the grounding copper plate remains in contact with the ground, resulting in high friction between the door and the ground, making closing difficult. Only when the distance between the sliding and fixed parts is at its shortest will the connecting rod move the mounting block closer to the slider, retracting the grounding copper plate into the limiting groove. In addition, the limiting component inserts into the fixing groove when the anti-detachment block abuts against the limiting ring, forming a mechanical interlock. This reduces the possibility of the connecting rod retracting unexpectedly, making the position of the mounting block stable. This further reduces the possibility of the grounding copper sheet accidentally separating from the ground, thus further ensuring the grounding effect of the enclosure and electrical components.

[0019] Optionally, the movable groove has an installation groove on its groove wall, and the limiting component includes a limiting block slidably disposed in the installation groove and a limiting spring disposed in the installation groove. One end of the limiting spring is disposed on the groove wall of the installation groove and the other end is disposed on the limiting block. The limiting spring can drive the limiting block to extend into the fixed groove.

[0020] By adopting the above technical solution, when the fixed part slides to the position where the limiting block and the fixing groove are aligned, the limiting block will extend into the fixing groove under the action of the limiting spring. At this time, part of the limiting block is located in the fixing groove and the other part is located in the mounting groove, thereby fixing the position of the sliding part and the fixed part. The limiting spring pushes the limiting block to automatically engage in the fixing groove, making operation convenient. The limiting spring continuously applies pressure to the limiting block, reducing the possibility of locking failure due to equipment vibration and adapting to the high-frequency vibration environment of power equipment.

[0021] Optionally, the mounting groove has a reset hole that penetrates the sliding part on the groove wall, the limiting block has a reset rod on the side near the limiting spring, the reset rod passes through the reset hole, the reset rod extends out of the sliding part along the reset hole, and the slider has a toggle block.

[0022] By adopting the above technical solution, when the enclosure door needs to be closed, the toggle block can be moved away from the base plate first, causing the slider to move the grounding copper plate away from the base plate. Simultaneously, the enclosure door is rotated in the closing direction, causing the mounting block to enter the limiting groove, with the guide slope abutting against the guide slope. Then, the reset rod is pulled away from the limiting block, causing the limiting block to move out of the fixing groove, thereby releasing the locking of the limiting block on the fixing and sliding parts. When closing the door further, the fixing and sliding parts can slide closer to each other. When the distance between the fixing and sliding parts is shortest, when closing the door further, the connecting rod can drive the mounting block to slide closer to the slider in the sliding groove, thus pushing the slider away from the base plate and retracting the grounding copper plate into the limiting groove, facilitating the closing of the enclosure door. Furthermore, the need to deliberately pull the reset rod to unlock the fixing and sliding parts reduces the possibility of accidental closing of the enclosure door or loss of grounding, enhancing safety during daily operation and maintenance.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the box door is opened, the grounding copper sheet will be grounded under the action of the limit component, eliminating the need for staff to manually hang the grounding wire. This reduces the risk of electric shock due to accidental operation caused by forgetting to hang the grounding wire and improves the safety of the electricity metering box.

[0025] 2. When the connecting spring experiences elastic fatigue after long-term use, the preload of the connecting spring can be adjusted by tightening the adjusting bolt, which ensures the grounding effect of the grounding copper sheet and extends the service life of the connecting spring.

[0026] 3. When opening the box door, the box door opens to a certain angle first, and then the connecting rod drives the mounting block to slide away from the slider, so that the grounding copper sheet is grounded. When closing the box door, the connecting rod drives the mounting block to slide closer to the slider first, so that the grounding copper sheet is de-grounded, reducing the friction between the box door and the ground during the opening and closing process, making it easier to open and close the box door. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of an embodiment of this application.

[0028] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0029] Figure 3 This is a partial structural diagram of the limiting component used in an embodiment of this application.

[0030] Figure 4 This is a partial structural schematic diagram used to illustrate the active slot in an embodiment of this application.

[0031] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Enclosure; 11. Enclosure door; 111. Rotating shaft; 112. Limiting groove; 113. Slider; 114. Grounding copper sheet; 115. Toggle block; 116. Sliding groove; 117. Guide part; 118. Connecting part; 119. Guide slope; 12. Side plate; 121. Hinge seat; 13. Base plate; 14. Top plate; 2. Electrical components; 3. Limiting assembly; 31. Connecting spring; 32. Connecting rod; 321. Sliding part; 322. Fixed part; 323. Movable groove; 324. Anti-detachment block; 325. Limiting ring; 326. Mounting groove; 327. Fixing groove; 328. Reset hole; 33. Mounting block; 331. Guide slope; 4. Limiting component; 41. Limiting block; 411. Reset rod; 42. Limiting spring; 5. Adjusting plate; 51. Adjusting bolt; 52. Fastening screw hole; 53. Adjusting groove. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] This application discloses an energy metering box with a limiting and anti-detachment hinge.

[0036] Reference Figure 1 and Figure 2An electricity metering box with a limiting anti-detachment hinge includes a box body 1 and electrical components 2 installed in the box body 1. The box body 1 includes a door 11, a side plate 12, a bottom plate 13 and a top plate 14. One side of the door 11 is hinged to the side plate 12, that is, the side plate 12 is provided with a hinge seat 121. One side of the door 11 is provided with a rotating shaft 111, which passes through the hinge seat 121. This design allows the door 11 to rotate flexibly around the rotating shaft 111 on the side plate 12, realizing the opening and closing function of the door 11, and facilitating the maintenance and other operations of the electrical components 2 inside the box body 1.

[0037] Reference Figure 1 and Figure 3 A limiting groove 112 is formed on the inner wall of the door 11. The limiting groove 112 is a long, narrow groove with a smooth inner wall to ensure that subsequent components can slide smoothly within it. A slider 113 is slidably mounted in the limiting groove 112. The slider 113 is cuboid in shape and can be made of wear-resistant engineering plastics, such as polyoxymethylene, or metals, such as aluminum alloy. This ensures a high degree of fit between the slider 113 and the limiting groove 112, guaranteeing that the slider 113 can slide smoothly towards or away from the base plate 13.

[0038] Reference Figure 1 and Figure 3 A grounding copper plate 114 is provided on the side of the slider 113 near the base plate 13. The grounding copper plate 114 is a rectangular thin sheet with good conductivity and is made of high-purity copper. The grounding copper plate 114 is electrically connected to the grounding wire of the electrical component 2 and the housing 1. In this way, when the grounding copper plate 114 comes into contact with the ground, it can conduct any charge that may be generated on the electrical component 2 and the housing 1 to the ground, ensuring the safety of the operators.

[0039] Reference Figure 1 and Figure 3 The door 11 is equipped with a limiting component 3 for driving the slider 113 to slide towards or away from the base plate 13. The function of the limiting component 3 is to control the sliding of the slider 113, thereby controlling whether the grounding copper plate 114 is in contact with the ground. The slider 113 is equipped with a toggle block 115, which makes it convenient to slide the slider 113 and the grounding copper plate 114 away from the base plate 13 before closing the door 11, thereby reducing the friction between the door 11 and the ground.

[0040] Reference Figure 1 and Figure 3The limiting component 3 includes a connecting spring 31 disposed on the side of the slider 113 away from the base plate 13, a connecting rod 32 rotatably disposed on the inner wall of the side plate 12, and a mounting block 33 slidably disposed on the inner wall of the door 11. One end of the connecting spring 31 is disposed on the groove wall of the limiting groove 112, and the other end is connected to the slider 113. The connecting spring 31 has a tendency to drive the slider 113 to slide closer to the base plate 13. The connecting spring 31 can be a helical spring, which is made of spring steel and has good elasticity and toughness. When the connecting spring 31 is in its natural state, it will give the slider 113 a pushing force in the direction of moving closer to the base plate 13, so that the slider 113 has a tendency to slide closer to the base plate 13.

[0041] Reference Figure 1 and Figure 3 One end of the connecting rod 32 is rotatably connected to the inner wall of the side plate 12, and the other end is rotatably mounted on the mounting block 33. The connecting rod 32 can be made of metal, such as stainless steel, and its two ends are rotatably connected to the inner wall of the side plate 12 and the mounting block 33 respectively through pins, so that the connecting rod 32 can rotate flexibly within a certain range. The inner wall of the door 11 is also provided with a sliding groove 116 for the mounting block 33 to slide. The sliding groove 116 communicates with the limiting groove 112, and the mounting block 33 slides in the sliding groove 116 toward or away from the slider 113.

[0042] Reference Figure 1 and Figure 3 The mounting block 33 is block-shaped, and its material can be the same as that of the slider 113, or other suitable materials can be selected. The mounting block 33 has a guide slope 331 on the side near the slider 113. The slider 113 includes a guide part 117 and a connecting part 118. The connecting part 118 connects the guide part 117 and the grounding copper plate 114. The guide part 117 has a guide slope 119 on the side near the mounting block 33. The guide slope 331 and the guide slope 119 slide in cooperation. Both the guide slope 331 and the guide slope 119 are inclined along the side of the mounting block 33 near the slider 113, so that when the mounting block 33 slides towards the guide part 117, the guide part 117 slides away from the base plate 13 along the guide slope 331.

[0043] Reference Figure 1 and Figure 3When the enclosure door 11 is opened, the mounting block 33 slides away from the slider 113 under the action of the connecting rod 32. The pushing force of the connecting spring 31 causes the slider 113 to slide closer to the base plate 13, thereby making the grounding copper sheet 114 contact the ground and achieving automatic grounding. When the enclosure door 11 is closed, the mounting block 33 slides closer to the slider 113 under the action of the connecting rod 32, squeezing the slider 113 to overcome the pushing force of the connecting spring 31 and slide away from the base plate 13, separating the grounding copper sheet 114 from the ground. This design allows the grounding copper sheet 114 to automatically contact or separate from the ground according to the opening and closing state of the enclosure door 11, reducing the tedious operation of manually hanging the grounding wire and the possibility of forgetting it, thus reducing the risk of electric shock.

[0044] Reference Figure 1 , Figure 3 and Figure 4 The connecting rod 32 includes a sliding part 321 connected to the mounting block 33 and a fixing part 322 connected to the inner wall of the side plate 12. The sliding part 321 is provided with a movable groove 323 for the fixing part 322 to slide. The fixing part 322 is provided with an anti-detachment block 324 at one end near the sliding part 321. A limiting ring 325 is provided on the groove wall of the movable groove 323 on the side of the anti-detachment block 324 near the side plate 12, and the inner diameter of the limiting ring 325 is smaller than the width of the anti-detachment block 324.

[0045] Reference Figure 4 The limiting ring 325 and the anti-detachment block 324 work together to reduce the possibility of excessive stretching or detachment of the connecting rod 32. The limiting ring 325 is an annular protrusion located on the groove wall of the movable groove 323, and its material can be the same as that of the sliding part 321. The anti-detachment block 324 is a large square structure located at the end of the fixed part 322 near the sliding part 321, and its width is greater than the inner diameter of the limiting ring 325. When the connecting rod 32 is stretched to a certain extent, the anti-detachment block 324 will abut against the limiting ring 325, preventing the fixed part 322 from detaching from the movable groove 323, thus ensuring the stability and reliability of the connecting rod 32.

[0046] Reference Figure 4 and Figure 5 The movable groove 323 has an installation groove 326 on its wall, located on the side of the limiting ring 325 away from the anti-detachment block 324. The movable groove 323 also has a limiting element 4, which includes a limiting block 41 slidably disposed in the installation groove 326 and a limiting spring 42 disposed in the installation groove 326. The limiting block 41 is square and can be made of a high-hardness metal, such as carbon steel. The fixing part 322 has a fixing groove 327 for the limiting block 41 to extend into.

[0047] Reference Figure 4 and Figure 5One end of the limiting spring 42 is disposed on the groove wall of the mounting groove 326, and the other end is disposed on the limiting block 41. The limiting spring 42 can drive the limiting block 41 to extend into the fixing groove 327. When the limiting ring 325 abuts against the anti-detachment block 324, the limiting block 41 extends into the fixing groove 327 under the action of the limiting spring 42, fixing the fixing part 322 and the sliding part 321 relative to each other, further enhancing the stability of the connecting rod 32.

[0048] Reference Figure 4 and Figure 5 The mounting groove 326 has a reset hole 328 that passes through the sliding part 321. The limiting block 41 has a reset rod 411 on the side near the limiting spring 42. The reset rod 411 passes through the reset hole 328 and extends out of the sliding part 321 along the reset hole 328. When it is necessary to release the relative fixation between the fixing part 322 and the sliding part 321, the limiting block 41 can be pulled out of the fixing groove 327 by moving the reset rod 411. Then the sliding part 321 can slide relative to the fixing part 322, thereby closing the door 11.

[0049] Reference Figure 3 An adjusting plate 5 is also slidably arranged in the limiting groove 112. The adjusting plate 5 is located on the side of the connecting spring 31 away from the slider 113. An adjusting bolt 51 is provided on the side of the adjusting plate 5 away from the connecting spring 31. The adjusting bolt 51 abuts against the adjusting plate 5. The door 11 is provided with a fastening screw hole 52 for threaded connection of the adjusting bolt 51 and an adjusting groove 53 communicating with the fastening screw hole 52. The fastening screw hole 52 is connected to the limiting groove 112. The bolt head of the adjusting bolt 51 is located in the adjusting groove 53.

[0050] Reference Figure 3 With the above settings, the adjusting bolt 51 and the adjusting plate 5 can be moved closer to the slider 113 by rotating the adjusting bolt 51, thereby compressing the connecting spring 31 and adjusting the preload of the connecting spring 31, thus ensuring the grounding effect of the grounding copper sheet 114.

[0051] The implementation principle of an energy metering box with a limiting anti-detachment hinge in this application embodiment is as follows: the sliding of the slider 113 is controlled by the limiting component 3, thereby controlling the contact and separation of the grounding copper sheet 114 from the ground. During the opening and closing of the box door 11, the movement of the connecting rod 32 and the mounting block 33, combined with the elastic force of the connecting spring 31, realizes the automatic grounding and separation of the grounding copper sheet 114. At the same time, the setting of the limiting ring 325, the anti-detachment block 324 and the limiting component 4 ensures the stability and reliability of the connecting rod 32, and the design of the toggle block 115 and the reset rod 411 facilitates the reset of the slider 113, thereby facilitating the closing of the box door 11. This design eliminates the need for workers to manually install the grounding wire, reduces the risk of electric shock due to human negligence, and improves the safety during the maintenance of the energy metering box.

[0052] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electricity metering box with a limiting anti-detachment hinge, comprising a box body (1) and electrical components (2) installed in the box body (1), the box body (1) comprising a door (11), a side plate (12), a bottom plate (13) and a top plate (14), one side of the door (11) being hinged to the side plate (12), the side plate (12) being provided with a hinge seat (121), and one side of the door (11) being provided with a rotating shaft (111), the rotating shaft (111) passing through the hinge seat (121), characterized in that: A limiting groove (112) is provided on the inner wall of the box door (11). A slider (113) is slidably arranged in the limiting groove (112). The slider (113) slides towards or away from the bottom plate (13). A grounding copper sheet (114) is provided on the side of the slider (113) near the bottom plate (13). The grounding copper sheet (114) is electrically connected to the grounding wire of the electrical component (2) and the box body (1). A limiting component (3) is provided on the box door (11) to drive the slider (113) to slide towards or away from the bottom plate (13). The limiting component (3) includes a connecting spring (31) disposed on the side of the slider (113) away from the bottom plate (13), a connecting rod (32) rotatably disposed on the inner wall of the side plate (12), and a mounting block (33) slidably disposed on the inner wall of the door (11). One end of the connecting spring (31) is disposed on the groove wall of the limiting groove (112), and the other end is connected to the slider (113). The connecting spring (31) has a tendency to drive the slider (113) to slide closer to the bottom plate (13). One end of the connecting rod (32) is rotatably connected to the inner wall of the side plate (12), and the other end is rotatably disposed on the mounting block (33). The inner wall of the door (11) is also provided with a sliding groove (116) for the mounting block (33) to slide. The sliding groove (116) is connected to the limiting groove (112). The mounting block (33) slides closer to or away from the slider (113).

2. The energy metering box with a limiting anti-detachment hinge according to claim 1, characterized in that: The mounting block (33) has a guide slope (331) on the side near the slider (113). The slider (113) includes a guide part (117) and a connecting part (118). The guide part (117) has a guide slope (119) on the side near the mounting block (33). The connecting part (118) is connected between the guide part (117) and the grounding copper plate (114). When the mounting block (33) slides towards the guide part (117), the guide part (117) slides away from the base plate (13) along the guide slope (331).

3. The energy metering box with a limiting anti-detachment hinge according to claim 1, characterized in that: An adjusting plate (5) is slidably disposed in the limiting groove (112). The adjusting plate (5) is disposed on the side of the connecting spring (31) away from the slider (113). An adjusting bolt (51) is provided on the side of the adjusting plate (5) away from the connecting spring (31). A fastening screw hole (52) is provided on the door (11) and is threadedly connected to the adjusting bolt (51). The fastening screw hole (52) is connected to the limiting groove (112). An adjusting groove (53) is also provided on the door (11) and is connected to the fastening screw hole (52). The bolt head of the adjusting bolt (51) is disposed in the adjusting groove (53).

4. An energy metering box with a limiting anti-detachment hinge according to claim 2, characterized in that: The connecting rod (32) includes a sliding part (321) connected to the mounting block (33) and a fixing part (322) connected to the inner wall of the side plate (12). The sliding part (321) has a movable groove (323) for the fixing part (322) to slide. The groove wall of the movable groove (323) is provided with a limiting ring (325). The fixing part (322) has an anti-detachment block at one end near the sliding part (321). The inner diameter of the limiting ring (325) is smaller than the width of the anti-detachment block.

5. An energy metering box with a limiting anti-detachment hinge according to claim 4, characterized in that: The movable groove (323) has a limiting member (4) on its groove wall. The limiting member (4) is located on the side of the limiting ring (325) away from the anti-detachment block. The fixing part (322) has a fixing groove (327) for the limiting member (4) to extend into. When the limiting ring (325) abuts against the anti-detachment block, the limiting member (4) extends into the fixing groove (327).

6. An energy metering box with a limiting anti-detachment hinge according to claim 5, characterized in that: The movable groove (323) has an installation groove (326) on its groove wall. The limiting member (4) includes a limiting block (41) slidably disposed in the installation groove (326) and a limiting spring (42) disposed in the installation groove (326). One end of the limiting spring (42) is disposed on the groove wall of the installation groove (326) and the other end is disposed on the limiting block (41). The limiting spring (42) can drive the limiting block (41) to extend into the fixed groove (327).

7. An energy metering box with a limiting anti-detachment hinge according to claim 6, characterized in that: The mounting groove (326) has a reset hole (328) that passes through the sliding part (321) on its groove wall. The limiting block (41) has a reset rod (411) on the side near the limiting spring (42). The reset rod (411) passes through the reset hole (328) and extends out of the sliding part (321) along the reset hole (328). The slider (113) has a toggle block (115).

Images