A combined junction box for preventing misoperation of electricity metering

Abstract

This invention provides a combined junction box for preventing misoperation of energy metering, relating to the technical field of energy metering junction boxes. It includes a box body with three sets of voltage connection units equidistantly arranged inside. A current connection unit is provided between the three sets of voltage connection units. Terminals are inserted into the surfaces of both voltage and current connection units, and a connecting piece is provided on the middle surface of each unit. The connecting piece contacts the terminal. An adjustment component is provided on the back of the connecting piece. Compared to existing technologies, the current flow direction of the current connection unit is adjusted by the connecting component and the adjustment component to form a secondary circuit, preventing the current transformer from opening. The adjustment of the connecting piece has a guiding and indicating effect, maintaining the stability of the connection between the connecting piece and the terminal after adjustment. Wiring can be performed according to the indicated position, thus avoiding misoperation.

Description

Technical Field

[0001] This invention relates to the field of electrical energy metering junction box technology, specifically to an electrical energy metering junction box designed to prevent misoperation. Background Technology

[0002] The metering junction box is a special junction box in the standard junction box of the power metering device. It is also suitable for secondary circuits with rated voltage up to 660 volts and rated current up to 20A. It is used for the safe replacement or on-site inspection of power meters, electrical instruments, leakage protection and other electrical equipment under load, ensuring personal safety and improving on-site work efficiency.

[0003] The junction box is internally divided into current and voltage zones. The current zone is usually switched by connecting the different positions of the insertion and exit terminals, which can be achieved by connecting the tabs to prevent the secondary circuit of the current transformer from opening when changing meters. Current technology generally requires manual adjustment. During this process, due to the special nature of the junction box, it is easy to make wiring errors and incorrect adjustment of the connecting tabs, resulting in an open circuit and creating a hazard. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a combined junction box for preventing misoperation of energy metering to solve the problems mentioned in the background. The present invention has a novel structure. Through the functions of the connecting component and the adjusting component, the current flow direction of the current wiring unit is adjusted to form a secondary circuit and to prevent the current transformer from opening. The adjustment of the connecting piece has a certain guiding and indicating effect. After the adjustment is completed, the stability of the connection between the connecting piece and the terminal can be maintained. When threading the wire, the wire can be threaded according to the indicated position, thereby avoiding misoperation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a combined junction box for preventing misoperation of electrical energy metering, comprising a box body, wherein three sets of voltage wiring units are equidistantly arranged inside the box body, and current wiring units are arranged between the three sets of voltage wiring units. Terminals are inserted into the surfaces of both the voltage and current wiring units, and connecting pieces are provided on the middle surfaces of both the voltage and current wiring units. The connecting pieces contact the terminals. An adjustment assembly is provided on the back of the connecting pieces, the adjustment assembly including a vertical plate. The vertical plate is installed on the back of the connecting pieces, and studs are threaded into both sides of the vertical plate, with the bottom of the studs protruding from the vertical plate for rotation. A pressure plate is installed, which presses against the surface of the wiring unit. Two sets of connecting plates are provided on the surface of the current wiring unit. Partitions are slidably installed on both sides of the two sets of connecting plates and are fixed to the surface of the current wiring unit. Wire holes are opened on both sides of the bottom of the box. The wire holes correspond to the terminals on a straight line. A connecting wire is inserted into the connecting hole. A connecting assembly is provided on the outer surface of the wire hole at the entrance end of the box. The connecting assembly includes a plug ring. The plug ring is fixed to the outside of the connecting wire at the entrance end of the current wiring unit. A connecting plate is fixed on the top of the plug ring. A vertical rod is provided on the top of the connecting plate. The vertical rod passes into the inside of the box and is fixedly connected to the vertical plate.

[0006] Furthermore, a first sealing cover is rotatably mounted on the top of the box corresponding to the two sets of current wiring units via a hinge shaft, and a second sealing cover is rotatably mounted on the top of the box corresponding to the two sets of voltage wiring units via a hinge shaft. A connecting strip is fixed to the front end of the second sealing cover and the rear end of the first sealing cover.

[0007] Furthermore, the adjustment assembly also includes a sliding groove. Sliding grooves are provided on the partitions on both sides of the connecting piece. Sliding blocks are fixed on both sides of the vertical plate and slide along the sliding grooves. A vertical groove is provided on the front of the vertical plate, and a moving block is slidably connected inside the vertical groove. The moving block is fixedly connected to the back of the connecting piece.

[0008] Furthermore, a drive belt is installed on the top of the two studs, and a tube is fixed on the top of the drive belt on one side of the vertical plate. The first and second sealing caps are threadedly connected to the tubes at the corresponding positions. A knob is fixed on the top of the screw, and a post is fixed on the bottom of the screw. The post is snapped into the tube.

[0009] Furthermore, a connecting post is slidably inserted into the top middle of the vertical plate, the bottom of the connecting post is fixedly connected to the moving block, and a second spring is sleeved on the surface of the connecting post, the other end of the second spring being fixedly connected to the vertical plate.

[0010] Furthermore, push rods are rotatably mounted on both sides of the connecting column via a rotating shaft, and the other end of the push rod is rotatably connected to a fixing block via a rotating shaft. The two sets of fixing blocks are respectively fixed on both sides of the transmission belt.

[0011] Furthermore, the connecting assembly also includes a crossbar, which is slidably inserted into the top of the connecting plate. One end of the crossbar is fixedly connected to the vertical bar. The box body has a moving groove at the position where the vertical bar passes through, and the vertical bar slides along the inside of the moving groove.

[0012] Furthermore, a first spring is fixed to the inner wall of the movable groove, and the other end of the first spring is fixedly connected to the longitudinal rod.

[0013] Furthermore, the box body is fixed with an upper clamping plate at the top of the moving groove, and the box body is slidably installed with a lower clamping plate at the bottom of the moving groove, with the upper and lower clamping plates clamping the upper and lower sides of the longitudinal rod.

[0014] Furthermore, a vertical rod is fixed to one end of the lower clamping plate, and a first connecting rod is rotatably connected to the top of the vertical rod via a bearing. A second connecting rod is rotatably connected to the other end of the first connecting rod via a rotating shaft. The other end of the second connecting rod is rotatably connected to the outer surface of the first sealing cover via a rotating shaft. Limiting frames are fixed to both sides of the box corresponding to the vertical rod, and the vertical rod slides along the limiting frames.

[0015] The beneficial effects of this invention are:

[0016] 1. In this invention, the vertical rod is pushed by the first and second connecting rods. The vertical rod slides down along the limiting frame, moving the lower clamping plate downward and separating it from the upper clamping plate, thus exposing the moving groove and facilitating the movement of the vertical rod. In this structure, the upper and lower clamping plates can be connected by Velcro or elastic rubber strips to seal the moving groove when the box needs to be sealed, and at the same time, the position of the vertical rod is limited to prevent the vertical rod from moving.

[0017] 2. This invention uses a moving crossbar and a sliding longitudinal bar along a moving groove to move the adjusting component and connecting piece, switching the position of contact with the terminal block. The crossbar slides along the connecting plate, allowing the switching and movement of the connecting piece to be completed on the outside of the housing. All objects in this device that directly contact the connecting piece are made of insulating material. The insertion ring at the bottom of the connecting plate can guide the insertion of the connection wire to the access end, avoiding incorrect insertion of the connection wire.

[0018] 3. In this invention, by rotating the knob, the screw can rotate simultaneously with the two sets of studs under the effect of the transmission belt, causing the pressure plate to rise or fall. When it is necessary to switch the position of the connecting piece, the pressure plate is moved upward before opening the sealing cover to separate it from the surface of the box. After releasing the squeezing contact, the connecting piece can be slidably adjusted by the vertical plate. During the movement of the studs, the movement of the transmission belt causes the two fixed blocks and the push rod to move the connecting piece vertically. When the pressure plate moves upward, the connecting piece moves the moving block downward along the vertical groove, and the connecting piece moves downward at the same time, and vice versa.

[0019] 4. This invention releases the squeezing and limiting effect of the pressure plate, and at the same time releases the squeezing contact between the connecting piece and the terminal, thereby facilitating the sliding of the connecting piece. Similarly, when the pressure plate is in squeezing contact with the surface of the current wiring unit, the connecting piece will also be in squeezing contact with the terminal, thereby ensuring the continuity. If only a simple inspection of the inside of the box is performed and the position of the connecting piece does not need to be adjusted, then it is not necessary to unlock the position of the vertical plate with the screw at the beginning, and the vertical plate and the connecting piece will remain in the continuity position.

[0020] 5. Compared with the prior art, the present invention adjusts the current flow direction of the current wiring unit through the action of the connecting component and the adjusting component, so as to form a secondary circuit and avoid the current transformer from being open-circuited. The adjustment of the connecting piece has a certain guiding and indicating effect. After the adjustment is completed, the stability of the connection between the connecting piece and the terminal can be maintained. When threading the wire, the wire can be threaded according to the indicated position, thereby avoiding misoperation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a combined junction box for preventing misoperation of electrical energy metering according to the present invention;

[0022] Figure 2 This is a schematic diagram showing the opening of the sealing cover of a combined junction box for preventing misoperation of electrical energy metering according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a junction box for preventing misoperation of electrical energy metering according to the present invention;

[0024] Figure 4 This is a schematic diagram showing the connection between the connecting piece and the adjustment component of the anti-misoperation power metering junction box according to the present invention;

[0025] Figure 5 This is a schematic diagram of the adjustment component structure of a combined junction box for preventing misoperation of electrical energy metering according to the present invention;

[0026] Figure 6 This is a schematic diagram showing the connection between the screw and the adjustment component of a combined junction box for preventing misoperation of electrical energy metering according to the present invention;

[0027] Figure 7 This is a schematic diagram of the connection component structure of a combined junction box for preventing misoperation of electrical energy metering according to the present invention;

[0028] Figure 8 This is a schematic diagram of the connection between the vertical and horizontal bars of a combined junction box for preventing misoperation of electrical energy metering according to the present invention;

[0029] Figure 9 This is an enlarged schematic diagram of area A of the integrated junction box for preventing misoperation of electrical energy metering according to the present invention.

[0030] In the diagram: 1. Box body; 11. Wire hole; 12. Connecting wire; 13. First sealing cover; 14. Second sealing cover; 141. Connecting strip; 15. Current wiring unit; 16. Voltage wiring unit; 17. Connecting piece; 18. Terminal block; 19. Partition; 2. Connecting assembly; 21. Vertical rod; 22. Limiting frame; 23. First connecting rod; 24. Second connecting rod; 25. Lower clamping plate; 26. Upper clamping plate; 27. Connecting plate; 28. 29. Insert ring; 210. Crossbar; 211. Moving groove; 212. First spring; 213. Vertical rod; 34. Adjusting assembly; 35. Slide groove; 36. Vertical plate; 37. Vertical groove; 38. Moving block; 39. Transmission belt; 30. Fixed block; 310. Connecting post; 311. Stud; 32. Pressure plate; 33. Second spring; 312. Slider; 313. Knob; 314. Screw; 315. Insert cylinder; 316. Push rod. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Please see Figures 1 to 9This invention provides a technical solution: a combined junction box for preventing misoperation of electrical energy metering, comprising a box body 1. Three sets of voltage wiring units 16 are equidistantly arranged inside the box body 1. Current wiring units 15 are arranged between the three sets of voltage wiring units 16. Terminals 18 are inserted into the surfaces of both the voltage wiring units 16 and the current wiring units 15. Connecting pieces 17 are provided on the middle surfaces of both the voltage wiring units 16 and the current wiring units 15, and the connecting pieces 17 contact the terminals 18. An adjustment component 3 is provided on the back of the connecting pieces 17. The adjustment assembly 3 includes a vertical plate 32, which is mounted on the back of the connecting piece 17. Studs 38 are threaded into both sides of the vertical plate 32. A pressure plate 39 is rotatably mounted on the bottom of each stud 38, extending out of the vertical plate 32. The pressure plate 39 is in contact with the surface of the wiring unit. Two sets of connecting pieces 17 are provided on the surface of the current wiring unit 15. Partition plates 19 are slidably mounted on both sides of the two sets of connecting pieces 17 and are fixed to the surface of the current wiring unit 15. Wire holes 11 are provided on both sides of the bottom of the housing 1. The wire holes 11 are connected to the straight... Corresponding to the terminal 18 on the line, a connecting wire 12 is inserted into the connecting hole. A connecting component 2 is provided on the outer surface of the wire hole 11 at the entrance end of the housing 1. The connecting component 2 includes a retaining ring 28, which is fixed to the outside of the connecting wire 12 at the entrance end of the current wiring unit 15. A connecting plate 27 is fixed to the top of the retaining ring 28. A vertical rod 212 is provided on the top of the connecting plate 27. The vertical rod 212 passes through the inside of the housing 1 and is fixedly connected to the vertical plate 32. In this solution, the housing 1, the current wiring unit 15, the voltage wiring unit 16, and the connecting wires are all connected together. The wiring of 12 is the same as that of the existing junction box and the usage method. When using the device, the top of the current wiring unit 15 and the voltage wiring unit 16 are protected separately by the first sealing cover 13 and the second sealing cover. When it is necessary to replace the meter, the second sealing cover 14 is opened by the cooperation of the connecting component 2 and the adjusting component 3, the position of the vertical plate 32 is unlocked, and the vertical plate 32 is pushed to slide along the inside of the partition 19 by the vertical rod 212 of the connecting component 2. The position of the connecting piece 17 is adjusted and switched to different terminal 18 positions to form a return current and avoid the open circuit of the current transformer.

[0033] In this embodiment, the top of the box body 1 is fitted with a first sealing cover 13 corresponding to two sets of current wiring units 15 via a hinge shaft. The top of the box body 1 is fitted with a second sealing cover 14 corresponding to two sets of voltage wiring units 16 via a hinge shaft. Connecting strips 141 are fixed to the front end of the second sealing cover 14 and the rear end of the first sealing cover 13. The adjusting assembly 3 also includes a sliding groove 31. Sliding grooves 31 are provided on the partition plates 19 on both sides of the connecting piece 17. Sliding blocks 311 are fixed on both sides of the vertical plate 32 and slide along the sliding grooves 31. A vertical groove 33 is provided on the front side of the vertical plate 32, and a moving block 34 is slidably connected inside the vertical groove 33. The moving block 34 is fixedly connected to the back side of the connecting piece 17. The two studs 3 A transmission belt 35 is installed on the top of the vertical plate 32, and a tube 315 is fixed to the top of the transmission belt 35 on one side of the vertical plate 32. A screw 313 is threaded into the first sealing cover 13 and the second sealing cover 14 corresponding to the position of the tube 315. A knob 312 is fixed to the top of the screw 313, and a post 314 is fixed to the bottom of the screw 313. The post 314 is snapped into the tube 315. A connecting post 37 is slidably inserted into the top middle of the vertical plate 32. The bottom of the connecting post 37 is fixedly connected to the moving block 34, and a second spring 310 is sleeved on the surface of the connecting post 37. The other end of the second spring 310 is fixedly connected to the vertical plate 32. Push rods 316 are rotatably installed on both sides of the connecting post 37 via a rotating shaft. One end is rotatably connected to a fixing block 36 via a rotating shaft. Two sets of fixing blocks 36 are respectively fixed on both sides of the transmission belt 35. The sealing cover has corresponding screws 313 that can be rotated to insert the insert 314 into the insert 315 to form a locking effect. By rotating the knob 312, the screws 313 can rotate simultaneously under the transmission effect of the transmission belt 35, causing the two sets of screws 38 to move, driving the pressure plate 39 to rise or fall. When it is necessary to switch the position of the connecting piece 17, the pressure plate 39 is moved upward before opening the sealing cover to separate it from the surface of the box 1. After releasing the squeezing contact, the connecting piece 17 can be slidably adjusted by the vertical plate 32. During the movement of the screws 38, the two fixing blocks 36 and the push rod 316 are engaged by the movement of the transmission belt 35. When the connecting post 37 is moved vertically and the pressure plate 39 moves upward, the connecting post 37 will move downward along the vertical groove 33 via the moving block 34, and the connecting piece 17 will move downward at the same time. The reverse is also true. The technical effect of this part is that while releasing the squeezing and limiting effect of the pressure plate 39, it also releases the squeezing contact between the connecting piece 17 and the terminal post 18, thereby facilitating the sliding of the connecting piece 17. Similarly, when the pressure plate 39 is in squeezing contact with the surface of the current wiring unit 15, the terminal post will also be in squeezing contact with the terminal post 18, thereby ensuring the continuity. If only a simple inspection of the inside of the box 1 is performed and the position of the connecting piece 17 does not need to be adjusted, then it is not necessary to unlock the position of the vertical plate 32 through the screw 313 at the beginning. The vertical plate 32 and the connecting piece 17 will remain in the continuity position.

[0034] In this embodiment, the connecting assembly 2 further includes a crossbar 29. The top of the connecting plate 27 is slidably connected to the crossbar 29. One end of the crossbar 29 is fixedly connected to the vertical rod 212. The box body 1 has a moving groove 210 corresponding to the position through which the vertical rod 212 passes, and the vertical rod 212 slides along the inside of the moving groove 210. A first spring 211 is fixed to the inner wall of the moving groove 210, and the other end of the first spring 211 is fixedly connected to the vertical rod 212. An upper clamping plate 26 is fixed to the top of the box body 1 at the top of the moving groove 210. A lower clamping plate 25 is slidably installed at the bottom of the moving groove 210, and the upper clamping plate 26 and the lower clamping plate 25 clamp the upper and lower sides of the vertical rod 212. A vertical rod 21 is fixed to one end of the lower clamping plate 25, and a first connecting rod 23 is rotatably connected to the top of the vertical rod 21 via a bearing. The other end of the first connecting rod 23 is rotatably connected to a second connecting rod 24 via a rotating shaft. The other end of the second connecting rod 24 is rotatably connected to the outer surface of the first sealing cover 13 via a rotating shaft. Limiting frames 22 are fixed to both sides of the box body 1 corresponding to the vertical rod 21, and the vertical rod 21 is positioned along the limiting frames. When frame 22 slides and the first sealing cover 13 is flipped open, the vertical rod 21 is pushed by the first connecting rod 23 and the second connecting rod 24. The vertical rod 21 slides downward along the limiting frame 22, moving the lower clamping plate 25 downward and separating it from the upper clamping plate 26, exposing the moving groove 210, which facilitates the movement of the vertical rod 212. In this structure, the upper clamping plate 26 and the lower clamping plate 25 can be connected by Velcro or elastic rubber strips. When the box 1 needs to be sealed, the moving groove 210 is blocked, and the position of the vertical rod 212 is also limited to prevent the vertical rod 212 from moving. 2. When movement occurs and the position of the connecting piece 17 needs to be adjusted, the adjustment component 3 and the connecting piece 17 can be moved by moving the horizontal bar 29 and the vertical bar 212 along the moving groove 210 to switch the position in contact with the terminal block 18. The horizontal bar 29 slides along the connecting plate 27, and the switching and movement of the connecting piece 17 can be completed on the outside of the box 1. All objects in this device that directly contact the connecting piece 17 are made of insulating material. The insertion ring 28 at the bottom of the connecting plate 27 can guide the insertion of the connection wire 12 to avoid incorrect insertion of the connection wire 12.

[0035] When using the device, the tops of the current wiring unit 15 and the voltage wiring unit 16 are protected separately by the first sealing cover 13 and the second sealing cover. When it is necessary to change the meter, by rotating the knob 312, the screw 313 can be driven by the transmission belt 35, and the two sets of studs 38 can be rotated simultaneously, driving the pressure plate 39 to rise or fall. When it is necessary to switch the position of the connecting piece 17, the pressure plate 39 is moved upward before opening the sealing cover to separate it from the surface of the box 1. After releasing the squeezing contact, the connecting piece 17 can be slidably adjusted by the vertical plate 32. During the movement of the studs 38, the two fixing blocks 36 and the push rod are moved by the movement of the transmission belt 35. 316 cooperates to move the connecting post 37 vertically. When the pressure plate 39 moves upward, the connecting post 37 will move the moving block 34 downward along the vertical groove 33, and the connecting piece 17 will move downward at the same time, and vice versa. The technical effect of this part is that while releasing the squeezing and limiting effect of the pressure plate 39, it also releases the squeezing contact between the connecting piece 17 and the terminal post 18, thereby facilitating the sliding of the connecting piece 17. Similarly, when the pressure plate 39 squeezes and contacts the surface of the current wiring unit 15, the connecting piece will also squeeze and contact the terminal post 18, thereby ensuring the continuity. If only a simple inspection of the inside of the box 1 is performed and the position of the connecting piece 17 does not need to be adjusted, then it is not necessary to start. The vertical plate 32 is unlocked by screw 313, keeping the vertical plate 32 and connecting piece 17 in a continuous passage. When the first sealing cover 13 is flipped open, the vertical rod 21 is pushed by the first connecting rod 23 and the second connecting rod 24. The vertical rod 21 slides downward along the limiting frame 22, moving the lower clamping plate 25 downward and separating it from the upper clamping plate 26, exposing the moving groove 210 to facilitate the movement of the vertical rod 212. In this structure, the upper clamping plate 26 and the lower clamping plate 25 can be connected by Velcro. When the box 1 needs to be sealed, the moving groove 210 is blocked, and the position of the vertical rod 212 is also limited to prevent the vertical rod 212 from moving. When adjusting the position of the connecting piece 17, the horizontal bar 29 can be moved and the vertical bar 212 can slide along the moving groove 210 to drive the adjusting component 3 and the connecting piece 17 to slide, switching the position in contact with the terminal block 18. The horizontal bar 29 slides along the connecting plate 27, and the switching and movement of the connecting piece 17 can be completed on the outside of the box 1. All objects in this device that directly contact the connecting piece 17 are made of insulating materials. The insertion ring 28 at the bottom of the connecting plate 27 can guide the insertion of the connection wire 12 to avoid incorrect insertion of the connection wire 12. Adjusting the position of the connecting piece 17 and switching to different terminal block 18 positions forms a return current and avoids the current transformer from being open-circuited.

[0036] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A junction box for preventing misoperation of electrical energy metering, comprising a box body (1), characterized in that: The box (1) is equipped with three sets of voltage wiring units (16) at equal intervals inside. A current wiring unit (15) is provided between the three sets of voltage wiring units (16). A terminal post (18) is inserted into the surface of both the voltage wiring unit (16) and the current wiring unit (15). A connecting piece (17) is provided on the middle surface of both the voltage wiring unit (16) and the current wiring unit (15). The connecting piece (17) contacts the terminal post (18). An adjustment component (3) is provided on the back of the connecting piece (17). The adjustment component (3) includes a vertical plate (32). The vertical plate (32) is installed on the back of the connecting piece (17). Studs (38) are threaded into both sides of the vertical plate (32). The bottom of the studs (38) protrudes out. A pressure plate (39) is rotatably mounted on a vertical plate (32). The pressure plate (39) is pressed against the surface of the wiring unit. Two sets of connecting pieces (17) are provided on the surface of the current wiring unit (15). Partition plates (19) are slidably mounted on both sides of the two sets of connecting pieces (17), and the partition plates (19) are fixed on the surface of the current wiring unit (15). Wire holes (11) are provided on both sides of the bottom of the box (1). The wire holes (11) correspond to the terminals (18) on the straight line. A connecting wire (12) is inserted into the connecting hole. A connecting component (2) is provided on the outer surface of the wire hole (11) at the entrance end of the box (1). The connecting component (2) includes a plug ring (28). The plug ring (28) is fixed at the entrance of the current wiring unit (15). Outside the connecting line (12) at the end, a connecting plate (27) is fixed to the top of the insertion ring (28). A vertical rod (212) is provided on the top of the connecting plate (27). The vertical rod (212) passes through the inside of the box (1) and is fixedly connected to the vertical plate (32). The top of the box (1) is equipped with a first sealing cover (13) that rotates through a hinge shaft corresponding to two sets of current wiring units (15). The top of the box (1) is equipped with a second sealing cover (14) that rotates through a hinge shaft corresponding to two sets of voltage wiring units (16). The adjusting assembly (3) also includes a sliding groove (31). The sliding groove (31) is provided on the partition (19) on both sides of the connecting piece (17). Slider (311) is fixed on both sides of the vertical plate (32). Sliding along the slide groove (31), the vertical plate (32) has a vertical groove (33) on its front side, and a moving block (34) is slidably connected inside the vertical groove (33). The moving block (34) is fixedly connected to the back of the connecting piece (17). A transmission belt (35) is installed on the top of the two studs (38). The two pulleys of the transmission belt (35) are slidably sleeved on the surface of the studs (38). A tube (315) is fixed on the top of the transmission belt (35) on one side of the vertical plate (32). The first sealing cover (13) and the second sealing cover (14) are threaded with screws (313) at the positions corresponding to the tubes (315). A knob (312) is fixed on the top of the screw (313), and a tube (314) is fixed on the bottom of the screw (313).The insert (314) is snapped into the insert (315). A connecting post (37) is slidably inserted into the middle top of the vertical plate (32). Push rods (316) are rotatably installed on both sides of the connecting post (37) via a rotating shaft. The other end of the push rod (316) is rotatably connected to a fixing block (36) via a rotating shaft. The two sets of fixing blocks (36) are respectively fixed on both sides of the transmission belt (35). The connecting assembly (2) also includes a crossbar (29). A crossbar (29) is slidably inserted into the top of the connecting plate (27). One end of the crossbar (29) is fixedly connected to the vertical rod (212). A moving groove (210) is opened in the box body (1) at the position where the vertical rod (212) passes through. The vertical rod (212) slides along the inside of the moving groove (210). A first spring (211) is fixed on the inner wall of the moving groove (210). The other end of the spring (211) is fixedly connected to the vertical rod (212). The box body (1) is fixed with an upper clamping plate (26) at the top of the moving groove (210). The box body (1) is slidably installed with a lower clamping plate (25) at the bottom of the moving groove (210). The upper clamping plate (26) and the lower clamping plate (25) are clamped on the upper and lower sides of the vertical rod (212). One end of the lower clamping plate (25) is fixed with a vertical rod (21). The top of the vertical rod (21) is rotatably connected to a first connecting rod (23) through a bearing. The other end of the first connecting rod (23) is rotatably connected to a second connecting rod (24) through a rotating shaft. The other end of the second connecting rod (24) is rotatably connected to the outer surface of the first sealing cover (13) through a rotating shaft. The box body (1) is fixed with limit frames (22) on both sides corresponding to the vertical rod (21). The vertical rod (21) slides along the limit frames (22). While releasing the squeezing and limiting effect of the pressure plate (39), the squeezing contact between the connecting piece (17) and the terminal (18) is released, making it easier for the connecting piece (17) to slide. When the pressure plate (39) and the surface of the current wiring unit (15) are in squeezing contact, the connecting piece will also be in squeezing contact with the terminal (18) to ensure the continuity. If only the inside of the box (1) is checked, there is no need to adjust the position of the connecting piece (17) or unlock the position of the vertical plate (32) through the screw (313). The switching and movement of the connecting piece (17) can be completed on the outside of the box (1). The insertion ring (28) at the bottom of the connecting plate (27) guides the insertion of the connection wire (12) to avoid the incorrect insertion of the connection wire (12). Adjust the position of the connecting piece (17) to switch to different terminal (18) positions to form a return current and avoid the open circuit of the current transformer.

2. The anti-misoperation power metering junction box according to claim 1, characterized in that: The front end of the second sealing cover (14) and the rear end of the first sealing cover (13) are both fixed with connecting strips (141).

3. The anti-misoperation power metering junction box according to claim 1, characterized in that: The bottom of the connecting column (37) is fixedly connected to the moving block (34), and a second spring (310) is sleeved on the surface of the connecting column (37). The other end of the second spring (310) is fixedly connected to the vertical plate (32).

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