Electric energy metering box with limiting anti-falling hinge

Abstract

The invention relates to the technical field of electric energy metering boxes, and discloses an electric energy metering box with a limiting anti-disengagement hinge, the electric energy metering box comprises a box body and an electrical element installed in the box body, the box body comprises a box door, a side plate, a bottom plate and a top plate, one side of the box door is hinged to the side plate, a limiting groove is formed in the inner wall of the box door, and the bottom plate is hinged to the top plate. A limiting groove is formed in the bottom plate, a sliding block is arranged in the limiting groove in a sliding mode, the sliding block slides in the direction close to or away from the bottom plate, a grounding copper sheet is arranged on the side, close to the bottom plate, of the sliding block, the grounding copper sheet is electrically connected with the electrical element and a grounding wire of the box body, and a limiting assembly used for driving the sliding block to slide in the direction close to or away from the bottom plate is arranged on the box door. The sliding block and the grounding copper sheet are controlled to slide through the limiting assembly, so that when the box door is opened, the grounding copper sheet can realize automatic grounding, a worker does not need to manually hang a grounding wire, and the safety when the electric energy metering box is used is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric energy metering boxes, in particular to an electric energy metering box with a limiting anti-disengagement hinge. BACKGROUND

[0002] An electric energy metering box is a key device for measuring the amount of electric energy in an electric power system. It realizes accurate measurement and recording of electric energy by integrating various metering instruments and auxiliary devices. The safety of the electric energy metering box directly affects the operation safety of maintenance personnel and the performance of electricity theft prevention.

[0003] In the related art, an electric energy metering box includes a box body and electrical elements installed in the box body. The box body includes a box door, a side plate, a bottom plate and a top plate. One side of the box door is connected to the side plate by a metal hinge, so that the box door can be opened and closed by rotation. The other side is fixed to the side plate by a mechanical lock to achieve locking of the box door. A grounding bar is provided in the box body. The grounding wires of the electrical elements are electrically connected to the grounding bar, and the grounding bar is connected to a grounding net to achieve grounding of the entire box body.

[0004] However, when the above-mentioned electric energy metering box is overhauled, there is a risk of corrosion and loosening of the grounding of the grounding bar in long-term use. Therefore, the worker needs to manually hang a grounding wire at the cable joint after opening the door to ensure that the box body and all devices inside the box body can remain grounded even if a fault occurs, thereby maintaining the safety of the maintenance operation. However, if the worker forgets to hang the grounding wire, there is a risk of electric shock due to misoperation. Therefore, there is room for improvement. SUMMARY

[0005] In order to improve the safety performance of the electric energy metering box, the application provides an electric energy metering box with a limiting anti-disengagement hinge.

[0006] The electric energy metering box with a limiting anti-disengagement hinge provided by the application adopts the following technical solution: An electric energy metering box with a limiting anti-disengagement hinge includes a box body and electrical elements installed in the box body. The box body includes a box door, a side plate, a bottom plate and a top plate. One side of the box door is hingedly connected to the side plate. A hinge seat is provided on the side plate. A rotating shaft is provided on one side of the box door. The rotating shaft is provided in the hinge seat. A limiting slot is formed in the inner wall of the box door. A sliding block is slidably arranged in the limiting slot. The sliding block slides towards or away from the bottom plate. A grounding copper sheet is provided on one side of the sliding block close to the bottom plate. The grounding copper sheet is electrically connected to the grounding wires of the electrical elements and the box body. A limiting assembly is provided on the box door for driving the sliding block to slide towards or away from the bottom plate.

[0007] By adopting the technical scheme, when the box door is opened, the limiting assembly pushes the sliding block towards the bottom plate, so that the grounding copper sheet is grounded, thereby ensuring that the box body and the electrical elements in the box body are automatically and forcibly grounded after the box door is opened, reducing the risk of electric shock caused by the staff forgetting to hang the grounding wire, and improving the safety of the electric energy metering box.

[0008] Optionally, the limiting assembly comprises a connecting spring arranged on the side of the sliding block away from the bottom plate, a connecting rod rotatably arranged on the inner wall of the side plate, and a mounting block slidably arranged on the inner wall of the box door, one end of the connecting spring is arranged on the groove wall of the limiting groove, and the other end of the connecting spring is connected to the sliding block, the connecting spring has a tendency to drive the sliding block to slide towards the bottom plate, one end of the connecting rod is rotatably connected to the inner wall of the side plate, and the other end of the connecting rod is rotatably arranged on the mounting block, the inner wall of the box door is also provided with a sliding groove for slidably arranging the mounting block, the sliding groove is in communication with the limiting groove, and the mounting block slides towards or away from the sliding block.

[0009] By adopting the technical scheme, when the box door is opened, the limiting assembly pushes the sliding block towards the bottom plate, so that the grounding copper sheet is grounded, thereby ensuring that the box body and the electrical elements in the box body are automatically and forcibly grounded after the box door is opened, reducing the risk of electric shock caused by the staff forgetting to hang the grounding wire, and improving the safety of the electric energy metering box.

[0010] Optionally, the side of the mounting block close to the sliding block is provided with a guide inclined surface, the sliding block comprises a guide portion and a connecting portion, the side of the guide portion close to the mounting block is provided with a guide inclined surface, and the connecting portion is connected between the guide portion and the grounding copper sheet, when the mounting block slides towards the guide portion, the guide portion slides away from the bottom plate along the guide inclined surface.

[0011] By adopting the technical scheme, when the box door needs to be closed, the box door can be directly rotated towards the closing direction, at this time, the connecting rod will rotate relative to the side plate and the mounting block, and the connecting rod drives the mounting block to slide towards the sliding block, so that the guide inclined surface contacts the guide inclined surface, and the mounting block pushes the guide part away from the bottom plate, so that the grounding copper sheet moves into the limiting groove, thereby preventing the grounding copper sheet from hindering the closing of the box door, and the sliding block does not need to be manually pushed away from the bottom plate, when the box door is closed, the mounting block is pressed upwards by the guide inclined surface, without additional operating force, the closing action naturally resets the grounding copper sheet, and the box door is convenient to close. In addition, the guide inclined surface and the guide inclined surface cooperate to convert the transverse movement of the mounting block into the longitudinal movement of the sliding block, reduce the friction loss, and reduce the risk of the mounting block being stuck when the connecting spring pushes the sliding block towards the bottom plate.

[0012] Optionally, an adjusting plate is slidably arranged in the limiting groove, the adjusting plate is arranged on the side of the connecting spring away from the sliding block, a adjusting bolt is arranged on the side of the adjusting plate away from the connecting spring, a fastening screw hole is formed in the box door and is threadedly connected with the adjusting bolt, the fastening screw hole is in communication with the limiting groove, an adjusting groove is formed in the box door and is in communication with the fastening screw hole, and a head of the adjusting bolt is arranged in the adjusting groove.

[0013] By adopting the technical scheme, when the electric energy metering box is used for a long time, the connecting spring is elastically fatigued due to frequent opening and closing of the door, a screwdriver or the like can be inserted into the adjusting groove first, the adjusting bolt is rotated to move the adjusting bolt towards the side close to the adjusting plate and the connecting spring, so that the compression amount of the connecting spring is increased, the pre-tightening force of the connecting spring is increased, the driving effect of the connecting spring on the sliding block and the grounding copper sheet is maintained, and the grounding copper sheet can be stably grounded when the box door is opened. The adjusting groove is arranged to facilitate rotation of the adjusting bolt.

[0014] Optionally, the connecting rod comprises a sliding part connected with the mounting block and a fixed part connected with the inner wall of the side plate, a movable groove is formed in the sliding part and is used for slidably arranging the fixed part, a limiting ring is arranged on the groove wall of the movable groove, and the inner diameter of the limiting ring is smaller than the width of the anti-dropping block.

[0015] By adopting the above technical scheme, when the box door is opened, the fixed part and the sliding part will slide away from each other first, until the anti-dropping block abuts against the limiting ring, the box door continues to be opened, at this time, the connecting rod will drive the mounting block to slide in the sliding groove away from the sliding block, then the sliding block slides towards the bottom plate under the action of the connecting spring, so that the grounding copper sheet is grounded. Through the above setting, the grounding copper sheet will not protrude out of the limiting groove and contact the ground when the box door is just opened, so as not to easily increase the friction between the box door and the ground, so that the grounding copper sheet is not easy to hinder the box door from being completely opened, but the grounding copper sheet will protrude out of the limiting groove and contact the ground after the box door is opened to a certain angle, so as to facilitate the operation of maintenance and the like after the box door is opened, and meanwhile the grounding effect of the grounding copper sheet is not affected. In addition, the inner diameter of the limiting ring is smaller than the width of the anti-dropping block, so that the fixed part is not easy to separate from the sliding part, thereby the overall stability of the connecting rod is high.

[0016] Optionally, a limiting piece is arranged on the groove wall of the movable groove, the limiting piece is arranged on the side of the limiting ring away from the anti-dropping block, and a fixing groove for the limiting piece to extend into is arranged on the fixed part, when the limiting ring abuts against the anti-dropping block, the limiting piece extends into the fixing groove.

[0017] By adopting the above technical scheme, when the box door is closed, since the fixed part and the sliding part are relatively fixed due to the limiting piece being clamped into the fixing groove, first, the connecting rod will drive the mounting block to move towards the sliding block, so that the guide inclined surface abuts against the guide inclined surface, thereby pushing the sliding block away from the bottom plate, so that the grounding copper sheet is retracted into the limiting groove, then when the door is continuously closed, since the grounding copper sheet no longer contacts the ground, the friction between the box door and the ground is reduced, thereby facilitating the closing of the door. Compared with not arranging the limiting piece, when the door is initially closed, the sliding part and the fixed part will slide towards each other, in this process, the grounding copper sheet always abuts against the ground, so that the friction between the box door and the ground is large, resulting in that it is laborious to close the door, until the distance between the sliding part and the fixed part is the shortest, the connecting rod will drive the mounting block to slide towards the sliding block, and the grounding copper sheet will be retracted into the limiting groove. In addition, the limiting piece is inserted into the fixing groove when the anti-dropping block abuts against the limiting ring, mechanical interlocking is formed, the possibility of accidental retraction of the connecting rod is reduced, the position of the mounting block is stable, thereby the possibility of accidental separation of the grounding copper sheet from the ground is reduced, and the grounding effect of the box body and the electrical elements is further ensured.

[0018] Optionally, a mounting groove is arranged on the groove wall of the movable groove, the limiting piece comprises a limiting block slidingly arranged in the mounting groove and a limiting spring arranged in the mounting groove, one end of the limiting spring is arranged on the groove wall of the mounting groove, and the other end of the limiting spring is arranged on the limiting block, the limiting spring can drive the limiting block to extend into the fixing groove.

[0019] By adopting the technical scheme, when the fixed part slides to the position where the limiting block is opposite to the fixed groove, the limiting block will extend into the fixed groove under the action of the limiting spring, at this time, a part of the limiting block is located in the fixed groove and another part is located in the mounting groove, so as to fix the positions of the sliding part and the fixed part, the limiting spring pushes the limiting block to automatically enter the fixed groove, and the operation is convenient. The limiting spring continuously presses the limiting block, which reduces the possibility of locking failure caused by equipment vibration, and adapts to the environment of high-frequency vibration of power equipment.

[0020] Optionally, a reset hole penetrating through the sliding part is formed in the groove wall of the mounting groove, a reset rod is arranged on the side of the limiting block close to the limiting spring, the reset rod is arranged in the reset hole, the reset rod extends out of the sliding part along the reset hole, and a pushing block is arranged on the sliding block.

[0021] By adopting the technical scheme, when the fixed part slides to the position where the limiting block is opposite to the fixed groove, the limiting block will extend into the fixed groove under the action of the limiting spring, at this time, a part of the limiting block is located in the fixed groove and another part is located in the mounting groove, so as to fix the positions of the sliding part and the fixed part, the limiting spring pushes the limiting block to automatically enter the fixed groove, and the operation is convenient. The limiting spring continuously presses the limiting block, which reduces the possibility of locking failure caused by equipment vibration, and adapts to the environment of high-frequency vibration of power equipment.

[0022] To sum up, the present application has at least one of the following beneficial technical effects: 1. When the box door is opened, the grounding copper sheet will be grounded under the action of the limiting assembly, without the need for the staff to manually hang the grounding wire, thereby reducing the risk of electric shock caused by forgetting to hang the grounding wire, and improving the safety of the electric energy metering box. 2. When the connecting spring produces elastic fatigue after long-term use, the pre-tightening force of the connecting spring can be adjusted by tightening the adjusting bolt, thereby ensuring the grounding effect of the grounding copper sheet and prolonging the service life of the connecting spring. 3. When the box door is opened, the box door is first opened to a certain angle, and then the connecting rod drives the mounting block to slide away from the sliding block, so that the grounding copper sheet is grounded. When the box door is closed, the connecting rod first drives the mounting block to slide towards the sliding block, so that the grounding copper sheet is ungrounded. This reduces the friction between the box door and the ground during opening and closing, and facilitates opening and closing of the box door. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a whole structural diagram of an embodiment of the present application.

[0024] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1.

[0025] Figure 3 is a partial structural schematic view for showing a limiting assembly in an embodiment of the present application.

[0026] Figure 4 is a partial structural schematic view for showing a movable slot in an embodiment of the present application.

[0027] Figure 5 is Figure 4 is an enlarged view of B in FIG. 1.

[0028] Legend of reference signs: 1, box body; 11, box door; 111, rotating shaft; 112, limiting slot; 113, sliding block; 114, grounding copper sheet; 115, pushing block; 116, sliding slot; 117, guide portion; 118, connecting portion; 119, guide inclined surface; 12, side plate; 121, hinge seat; 13, bottom plate; 14, top plate; 2, electrical element; 3, limiting assembly; 31, connecting spring; 32, connecting rod; 321, sliding portion; 322, fixed portion; 323, movable slot; 324, anti-dropping block; 325, limiting ring; 326, mounting slot; 327, fixed slot; 328, reset hole; 33, mounting block; 331, guide inclined surface; 4, limiting piece; 41, limiting block; 411, reset rod; 42, limiting spring; 5, adjusting plate; 51, adjusting bolt; 52, fastening screw hole; 53, adjusting slot. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1-5 The present application is further described in detail.

[0030] The embodiment of the present application discloses an electric energy metering box with limiting anti-dropping hinge.

[0031] With reference to Figure 1 and Figure 2 An electric energy metering box with limiting anti-dropping hinge comprises a box body 1 and an electrical element 2 mounted in the box body 1, wherein the box body 1 comprises a box door 11, a side plate 12, a bottom plate 13 and a top plate 14, one side of the box 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 box door 11 is provided with a rotating shaft 111, and the rotating shaft 111 is arranged in the hinge seat 121, so that the box door 11 can be flexibly rotated on the side plate 12 about the rotating shaft 111, realizing the opening and closing function of the box door 11 and facilitating the maintenance and other operations on the electrical element 2 in the box body 1.

[0032] With reference to Figure 1 And Figure 3 , the inner wall of the box door 11 is provided with a limiting groove 112, which is a long strip-shaped groove with smooth inner wall to ensure smooth sliding of the subsequent components. The sliding block 113 is slidably arranged in the limiting groove 112, and the sliding block 113 is in the shape of a cuboid. The material of the sliding block 113 can be selected from wear-resistant engineering plastics such as polyformaldehyde, and of course metal materials such as aluminum alloy. The cooperation accuracy of the sliding block 113 and the limiting groove 112 is high to ensure that the sliding block 113 can smoothly slide towards the bottom plate 13 or away from the bottom plate 13.

[0033] With reference to Figure 1 And Figure 3 , the side of the sliding block 113 close to the bottom plate 13 is provided with a grounding copper sheet 114, which is in the shape of a long rectangular sheet and has good electrical conductivity. The material of the grounding copper sheet 114 is high-purity red copper. The grounding copper sheet 114 is electrically connected with the grounding wire of the electrical element 2 and the box body 1. When the grounding copper sheet 114 is in contact with the ground, the electrical charge generated on the electrical element 2 and the box body 1 can be conducted to the ground, ensuring the safety of the operator.

[0034] With reference to Figure 1 And Figure 3 , the box door 11 is provided with a limiting assembly 3 for driving the sliding block 113 to slide towards or away from the bottom plate 13. The limiting assembly 3 controls the sliding of the sliding block 113, and further controls whether the grounding copper sheet 114 is in contact with the ground. The sliding block 113 is provided with a push block 115, which facilitates the sliding of the sliding block 113 and the grounding copper sheet 114 away from the bottom plate 13 when the box door 11 needs to be closed, thereby reducing the friction between the box door 11 and the ground.

[0035] With reference to Figure 1 And Figure 3 , the limiting assembly 3 includes a connecting spring 31 arranged on the side of the sliding block 113 away from the bottom plate 13, a connecting rod 32 rotatably arranged on the inner wall of the side plate 12, and a mounting block 33 slidably arranged on the inner wall of the box door 11. One end of the connecting spring 31 is arranged on the groove wall of the limiting groove 112, and the other end is connected to the sliding block 113. The connecting spring 31 has a tendency to drive the sliding block 113 to slide towards the bottom plate 13. The connecting spring 31 can be selected from a coil spring made of spring steel, which has good elasticity and toughness. When the connecting spring 31 is in a natural state, it will provide a pushing force to the sliding block 113 in the direction towards the bottom plate 13, so that the sliding block 113 has a tendency to slide in the direction towards the bottom plate 13.

[0036] With reference to Figure 1 And Figure 3One end of the connecting rod 32 is rotatably connected to the inner wall of the side plate 12, and the other end is rotatably arranged on the mounting block 33. The connecting rod 32 can be a metal rod, such as a stainless steel rod, and the two ends thereof are rotatably connected to the inner wall of the side plate 12 and the mounting block 33 through a pin shaft, so that the connecting rod 32 can flexibly rotate within a certain range. The inner wall of the box door 11 is also provided with a sliding groove 116 for slidingly arranging the mounting block 33, and the sliding groove 116 is in communication with the limiting groove 112. The mounting block 33 slides in the sliding groove 116 towards or away from the sliding block 113.

[0037] With reference to Figure 1 and Figure 3 The mounting block 33 is block-shaped, and the material thereof can be the same as that of the sliding block 113 or other suitable materials. The side of the mounting block 33 close to the sliding block 113 is provided with a guide inclined surface 331. The sliding block 113 includes a guide portion 117 and a connecting portion 118, and the connecting portion 118 is connected between the guide portion 117 and the grounding copper sheet 114. The side of the guide portion 117 close to the mounting block 33 is provided with a guide inclined surface 119. The guide inclined surface 331 and the guide inclined surface 119 are in sliding cooperation, and both of them are inclined along the side of the mounting block 33 close to the sliding block 113. When the mounting block 33 slides towards the guide portion 117, the guide portion 117 slides along the guide inclined surface 331 away from the bottom plate 13.

[0038] With reference to Figure 1 and Figure 3 When the box door 11 is opened, the mounting block 33 slides away from the sliding block 113 under the driving of the connecting rod 32. The pushing force of the connecting spring 31 makes the sliding block 113 slide towards the bottom plate 13, so that the grounding copper sheet 114 contacts the ground, realizing automatic grounding. When the box door 11 is closed, the mounting block 33 slides towards the sliding block 113 under the driving of the connecting rod 32, and the sliding block 113 is extruded to slide away from the bottom plate 13 against the pushing force of the connecting spring 31, so that the grounding copper sheet 114 is separated from the ground. This design makes the grounding copper sheet 114 automatically contact or separate from the ground according to the opening and closing state of the box door 11, reduces the cumbersome operation of manually hanging the grounding wire by the staff and the possible forgetting situation, and reduces the risk of electric shock.

[0039] With reference to Figure 1 , Figure 3 and Figure 1The connecting rod 32 comprises a sliding part 321 connected with the mounting block 33, a fixed part 322 connected with the inner wall of the side plate 12, and a movable groove 323 provided on the sliding part 321 for slidingly arranging the fixed part 322. The fixed part 322 is provided with an anti-falling block 324 at one end close to the sliding part 321. A limiting ring 325 is arranged on the groove wall of the movable groove 323 at a side close to the side plate 12, and the inner diameter of the limiting ring 325 is smaller than the width of the anti-falling block 324.

[0040] With reference to Figure 3 The limiting ring 325 and the anti-falling block 324 cooperate to reduce the possibility of over-stretching or falling off of the connecting rod 32. The limiting ring 325 is an annular protrusion arranged on the groove wall of the movable groove 323, and the material thereof can be the same as that of the sliding part 321. The anti-falling block 324 is a larger square structure arranged at one end of the fixed part 322 close to the sliding part 321, and the width thereof is greater than the inner diameter of the limiting ring 325. When the connecting rod 32 is stretched to a certain extent, the anti-falling block 324 will abut against the limiting ring 325 to prevent the fixed part 322 from falling out of the movable groove 323, thereby ensuring the stability and reliability of the connecting rod 32.

[0041] With reference to Figure 4 and Figure 4 The groove wall of the movable groove 323 is provided with a mounting groove 326 arranged at a side away from the anti-falling block 324. The groove wall of the movable groove 323 is further provided with a limiting part 4 comprising a limiting block 41 slidingly arranged in the mounting groove 326 and a limiting spring 42 arranged in the mounting groove 326. The limiting block 41 is square-shaped, and the material thereof can be a metal with high hardness, such as carbon steel. The fixed part 322 is provided with a fixed groove 327 for extending the limiting block 41, With reference to Figure 4 and Figure 5 One end of the limiting spring 42 is arranged on the groove wall of the mounting groove 326, and the other end thereof is arranged on the limiting block 41. The limiting spring 42 can drive the limiting block 41 to extend into the fixed groove 327. When the limiting ring 325 abuts against the anti-falling block 324, the limiting block 41 extends into the fixed groove 327 under the action of the limiting spring 42 to relatively fix the fixed part 322 and the sliding part 321, thereby further enhancing the stability of the connecting rod 32.

[0042] With reference to Figure 4 and Figure 5The wall of the installation groove 326 is provided with a reset hole 328 penetrating the sliding part 321, the limiting block 41 is provided with a reset rod 411 on the side close to the limiting spring 42, the reset rod 411 is arranged in the reset hole 328, and the reset rod 411 extends out of the sliding part 321 along the reset hole 328. When it is needed to release the relative fixing of the fixed part 322 and the sliding part 321, the reset rod 411 can be rotated to pull the limiting block 41 out of the fixed groove 327, and then the sliding part 321 can slide relative to the fixed part 322, so that the box door 11 can be closed.

[0043] With reference to Figure 4 The limiting groove 112 is also slidably provided with an adjusting plate 5, the adjusting plate 5 is arranged on the side of the connecting spring 31 away from the sliding block 113, the adjusting plate 5 is provided with an adjusting bolt 51 on the side away from the connecting spring 31, the adjusting bolt 51 abuts against the adjusting plate 5, the box door 11 is provided with a fastening hole 52 for screwing the adjusting bolt 51, an adjusting groove 53 communicating with the fastening hole 52, and the fastening hole 52 communicates with the limiting groove 112, and the bolt head of the adjusting bolt 51 is arranged in the adjusting groove 53.

[0044] With reference to Figure 5 Figure 3 Figure 3 Through the above arrangement, the adjusting bolt 51 and the adjusting plate 5 can be moved towards the sliding block 113 by rotating the adjusting bolt 51, so as to compress the connecting spring 31, thereby adjusting the pre-tightening force of the connecting spring 31, and thus ensuring the grounding effect of the grounding copper sheet 114.

[0045] The implementation principle of the electric energy metering box with a limiting anti-disengagement hinge according to the embodiment of the application is that the sliding of the sliding block 113 is controlled by the limiting assembly 3, and then the contact and separation of the grounding copper sheet 114 with the ground are controlled. In the process of opening and closing the box door 11, the movement of the connecting rod 32 and the mounting block 33 is utilized, and the elastic force of the connecting spring 31 is combined, so as to realize the automatic grounding and separation of the grounding copper sheet 114. At the same time, the limiting ring 325, the anti-disengagement block 324 and the limiting part 4 ensure the stability and reliability of the connecting rod 32, and the design of the push block 115 and the reset rod 411 facilitates the resetting of the position of the sliding block 113, thereby facilitating the closing of the box door 11. This design does not need the staff to manually hang the grounding wire, reduces the risk of electric shock caused by human negligence, and improves the safety during the maintenance of the electric energy metering box.

[0046] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the 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: The inner wall of the box door (11) is provided with a limiting groove (112), a sliding block (113) is slidably arranged in the limiting groove (112), the sliding block (113) slides towards or away from the bottom plate (13), a grounding copper sheet (114) is arranged on the side of the sliding block (113) close to the bottom plate (13), the grounding copper sheet (114) is electrically connected with the grounding wire of the electrical element (2) and the box body (1), and the box door (11) is provided with a limiting assembly (3) for driving the sliding block (113) to slide towards or away from the bottom plate (13).

2. The electric energy metering box with limiting anti-off hinge according to claim 1, characterized in that: The limiting assembly (3) comprises a connecting spring (31) arranged on the side of the sliding block (113) away from the bottom plate (13), a connecting rod (32) rotatably arranged on the inner wall of the side plate (12), and a mounting block (33) slidably arranged on the inner wall of the box door (11), one end of the connecting spring (31) is arranged on the groove wall of the limiting groove (112), the other end of the connecting spring (31) is connected to the sliding block (113), the connecting spring (31) has a tendency to drive the sliding block (113) to slide towards the bottom plate (13), one end of the connecting rod (32) is rotatably connected to the inner wall of the side plate (12), the other end of the connecting rod (32) is rotatably arranged on the mounting block (33), the inner wall of the box door (11) is also provided with a sliding groove (116) for slidably arranging the mounting block (33), the sliding groove (116) is communicated with the limiting groove (112), and the mounting block (33) slides towards or away from the sliding block (113).

3. The electric energy metering box with limiting anti-off hinge according to claim 2, characterized in that: The side of the mounting block (33) close to the sliding block (113) is provided with a guide inclined surface (331), the sliding block (113) comprises a guide portion (117) and a connecting portion (118), the side of the guide portion (117) close to the mounting block (33) is provided with a guide inclined surface (119), and the connecting portion (118) is connected between the guide portion (117) and the grounding copper sheet (114), when the mounting block (33) slides towards the guide portion (117), the guide portion (117) slides away from the bottom plate (13) along the guide inclined surface (331).

4. The electric energy metering box with limiting anti-off hinge according to claim 2, characterized in that: An adjusting plate (5) is slidably arranged in the limiting groove (112), the adjusting plate (5) is arranged on the side of the connecting spring (31) away from the sliding block (113), the side of the adjusting plate (5) away from the connecting spring (31) is provided with an adjusting bolt (51), the box door (11) is provided with a fastening screw hole (52) threadedly connected with the adjusting bolt (51), the fastening screw hole (52) is communicated with the limiting groove (112), the box door (11) is also provided with an adjusting groove (53) communicated with the fastening screw hole (52), and the head of the adjusting bolt (51) is arranged in the adjusting groove (53).

5. The electric energy metering box with limiting anti-off hinge according to claim 3, characterized in that: The connecting rod (32) comprises a sliding part (321) connected with the mounting block (33), and a fixed part (322) connected with the inner wall of the side plate (12), a movable slot (323) for slidingly arranging the fixed part (322) is arranged on the sliding part (321), a limiting ring (325) is arranged on the slot wall of the movable slot (323), a anti-disengagement block is arranged on one end of the fixed part (322) close to the sliding part (321), and the inner diameter of the limiting ring (325) is smaller than the width of the anti-disengagement block.

6. The electric energy metering box with limiting anti-off hinge according to claim 5, characterized in that: A limiting part (4) is arranged on the slot wall of the movable slot (323), the limiting part (4) is arranged on the side of the limiting ring (325) away from the anti-disengagement block, a fixing slot (327) for extending the limiting part (4) is arranged on the fixed part (322), and when the limiting ring (325) abuts against the anti-disengagement block, the limiting part (4) extends into the fixing slot (327).

7. The electric energy metering box with limit anti-off hinge according to claim 6, characterized in that: A mounting slot (326) is arranged on the slot wall of the movable slot (323), the limiting part (4) comprises a limiting block (41) slidingly arranged in the mounting slot (326), and a limiting spring (42) arranged in the mounting slot (326), one end of the limiting spring (42) is arranged on the slot wall of the mounting slot (326), the other end of the limiting spring (42) is arranged on the limiting block (41), and the limiting spring (42) can drive the limiting block (41) to extend into the fixing slot (327).

8. The electric energy metering box with limit anti-off hinge according to claim 7, characterized in that: A reset hole (328) penetrating through the sliding part (321) is arranged on the slot wall of the mounting slot (326), a reset rod (411) is arranged on the side of the limiting block (41) close to the limiting spring (42), the reset rod (411) is arranged in the reset hole (328), the reset rod (411) extends out of the sliding part (321) along the reset hole (328), and a pushing block (115) is arranged on the sliding block (113).

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