Electric energy metering box and intelligent power distribution system

Abstract

The invention discloses an electric energy metering box and an intelligent power distribution system, the electric energy metering box comprises a box body, the box body is internally provided with an electric energy meter, the electric energy meter is externally connected with a wire body, the box body is also internally provided with a limiting unit, and the limiting unit comprises a cover shell I and a cover shell II which are arranged in the box body and are matched with each other. Compared with the prior art, the electric wire has the advantages that when the electric wire body is stretched by external force, the inner spherical layer moves to the inner-wide-outer-narrow structure areas at the end parts of the cover shell I and the cover shell II along with the electric wire body, and is extruded by the cover shell I and the cover shell II to contract inwards, so that the flexible clamping force on the electric wire body is enhanced, and the terminal connection point is prevented from being loosened due to stress; after the external force disappears, the elastic member resets the inner ball layer to the spacious area, thereby releasing the extrusion on the wire body, preventing the insulating layer from being worn or metal from being fatigue due to long-term extrusion, preventing the wire body from being in a low-pressure or non-pressure state in a normal state, eliminating the continuous friction or extrusion of a fixed point, and remarkably prolonging the service life of the insulating layer.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to an electric energy metering box and an intelligent power distribution system. Background Art

[0002] The electricity meter box is a core device installed at the power user to measure the user's electricity consumption. The electricity meter installed inside is the core component. By accurately measuring the current and voltage flowing through, it calculates the actual active and reactive energy consumed by the user.

[0003] The electricity meter in the electricity meter box needs to be connected to the wires, and the wires need to be connected to the meter box. The wires are in a suspended state. In windy weather, the wires will shake or swing like guitar strings. When the ambient temperature changes, the length of the wires will change, causing them to become loose or tight. The additional weight of ice and snow on the wires will cause them to sag significantly, or even lead to excessive stretching. When birds take off or land, or when branches and foreign objects hit the wires, they will cause momentary shaking or pulling.

[0004] Continuously shaking or stretching the wires will cause the pulling force to be almost completely transferred to the connection points between the wires and the terminals, causing the screws of the wire connection terminals in the electricity meter box to loosen. The resistance at the loose points will increase, causing overheating, oxidation, and even fire risks. Severe looseness may cause discharge between the terminals, damage equipment or cause electrical fires.

[0005] Although wires have been fixed at present, there are still certain problems. When fixing the wires, it is necessary to ensure that the wires are firmly fixed, and firm fixation will inevitably produce a certain squeezing effect on the wires, which makes the insulation layer of the wires easily damaged, and may crush or even cut off some filaments, reducing the overall effective conductive cross-sectional area of ​​the wires. When the wires are shaken by external forces, the wires near the fixed points are repeatedly bent. Long-term accumulation will cause some wire strands or the entire conductor to break. There is also the possibility of the insulation layer being worn, posing a safety hazard. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned problems and to provide an electric energy metering box and an intelligent power distribution system.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: an electric energy meter box includes a box body, an electric energy meter is provided inside the box body, an electric energy meter is connected to the outside of the electric energy meter, and a limiting unit is also installed in the box body, and the limiting unit includes: The first cover shell and the second cover shell are both arranged in the box body and cooperate with each other; Two sets of inner ball layers are clamped between the first cover shell and the second cover shell. The wire body passes through the two sets of inner ball layers and is fixed. The wire body located between the two sets of inner ball layers has a margin. The elastic member is fixed between the two groups of inner ball layers, and the middle position of the elastic member is fixed to an inner wall of the cover shell, and is used to reset the two groups of inner ball layers to the middle position; wherein, When the two groups of inner ball layers move toward the ends of the first cover shell and the second cover shell respectively, the wire body is gradually squeezed and fixed.

[0008] A further preferred solution of the present invention is that the edges of the mating surfaces of cover shell 1 and cover shell 2 are integrally provided with mounting ears, and the mounting ears on cover shell 1 and cover shell 2 are in contact with and fixed to each other by bolts.

[0009] A further preferred solution of the present invention is that both ends of the cover shell 1 and the cover shell 2 are integrally provided with arc sleeves, the cross section of the arc sleeves being a circular ring, and the arc sleeves on the cover shell 1 and the cover shell 2 cooperate with each other to form a complete circular ring; The outer wall of the arc sleeve is smooth, and the arc sleeves on the cover shell one and the cover shell two transition smoothly with the inner walls of the cover shell one and the cover shell two respectively. The wire body passes through the arc sleeves on the cover shell one and the cover shell two, and the wire body contacts the arc sleeve when it is bent.

[0010] A further preferred embodiment of the present invention is as follows: a through hole is axially opened in the inner ball layer, the wire body passes through the through hole, and the inner wall of the through hole has a layer of adhesive for adhering the through hole to the wire body; The outer wall of the inner ball layer is coated with a polytetrafluoroethylene coating to reduce friction between it and the inner walls of the cover shell 1 and the cover shell 2.

[0011] A further preferred solution of the present invention is that both ends of the inner ball layer are provided with cross-shaped valve grooves, and the cross-shaped valve grooves are used to divide the perforations.

[0012] A further preferred solution of the present invention is that the middle position of the elastic member is welded to the inner wall of the first cover shell, the elastic member is a spring, and its axis coincides with the axis of the first cover shell and the second cover shell.

[0013] A further preferred solution of the present invention is that when cover shell 1 and cover shell 2 are matched, the middle section thereof is in the shape of a straight tube, and the two ends thereof are in the shape of a wide inner portion and a narrow outer portion. The inner ball layer is arranged on the inner side of the wide inner portion and the narrow outer portion at the two ends of cover shell 1 and cover shell 2. When the inner ball layer moves outward, it is squeezed against the narrow position of cover shell 1 and cover shell 2, so that the inner ball layer applies an extrusion force to the wire body inside it.

[0014] A further preferred solution of the present invention is that the box also has an elastic unit for creating a margin for the wire body, the elastic unit includes a plurality of ferrules for sleeved on the wire body, the plurality of ferrules are distributed in a "U"-shaped array, and elastic metal strips are fixed between the ferrules and adjacent ferrules, a connecting shaft is fixed to the outside of one of the ferrules, and the connecting shaft is used to be fixed to the inside of the box.

[0015] A further preferred solution of the present invention is that a fixing unit is further installed in the box body, the fixing unit includes a shaft fixed in the box body, the shaft having a slide groove extending along the shaft, a slider is slidably installed in the slide groove, and the slider is pressed against the inner wall of the slide groove; An adjusting plate that can be rotated to adjust the position is installed on the outer end surface of the slider, a socket is opened on the outer side of the adjusting plate, and a plug shaft that matches the socket is integrated on the rear end surface of the cover shell; A matching hole is provided on the outside of the slider, and a matching cylinder fixed to the adjustment plate is sleeved in the matching hole. An inner spring is fixed between the inner wall of the matching hole and the inner end wall of the matching cylinder. A matching convex edge distributed along a circle of the matching hole is fixed on the outer side of the slider, and a matching concave edge is provided on the side of the adjustment plate close to the slider to match the matching convex edge.

[0016] The intelligent power distribution system includes the electric energy metering box described above.

[0017] Compared with the prior art, the advantages of the present invention are: 1. When the wire body is stretched by external force, the inner ball layer moves with the wire body to the inner wide and outer narrow structural area at the ends of cover shell 1 and cover shell 2, and is squeezed inward by cover shell 1 and cover shell 2, thereby enhancing the flexible clamping force on the wire body and preventing the terminal connection point from loosening due to force; after the external force disappears, the elastic member resets the inner ball layer to the spacious area, relieving the squeezing of the wire body and avoiding long-term squeezing that causes insulation layer wear or metal fatigue. Under normal circumstances, the wire body is in a low-pressure or no-pressure state, eliminating continuous friction or squeezing at fixed points and significantly extending the life of the insulation layer.

[0018] 2. The polytetrafluoroethylene coating on the outer wall of the inner ball layer greatly reduces the friction resistance between it and the inner wall of cover shell 1 and cover shell 2, ensuring that the inner ball layer can quickly slide and respond when the wire is subjected to force. The adhesive layer adheres to the perforated inner wall so that the inner ball layer and the wire body move synchronously, avoiding secondary wear caused by relative sliding. The valve groove design supports the elastic expansion of the end of the inner ball layer, which facilitates the wire perforation and adhesive layer bonding operations.

[0019] 3. When the outer side of the inner ball layer is squeezed, the flexible clamping force on the wire body is enhanced. At the same time, as the pulling force increases, it will be pulled tighter and tighter to ensure that the wire body terminal is in a fixed state. Due to the effect of flexibility, direct squeezing of the wire body is avoided to damage the wire body, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the separation structure of the electric energy meter of the present invention; Figure 3 Schematic diagram of the structure of the limiting unit and the elastic unit of the present invention; Figure 4 This is a schematic diagram of the structure of the slider and the adjustment plate of the present invention; Figure 5 This is another structural diagram of the slider and the adjustment plate of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the limiting unit of the present invention; Figure 7 This is another structural diagram of the limiting unit of the present invention; Figure 8 This is a schematic diagram of the detailed structure of the inner ball layer of the present invention; Figure 9 This is a schematic diagram of the elastic unit structure of the present invention.

[0022] In the figure: 1. Box body; 2. Electric energy meter; 3. Fixing unit; 31. Shaft; 32. Slide; 33. Slider; 331. Matching hole; 332. Inner spring; 333. Matching convex edge; 34. Adjusting plate; 341. Matching cylinder; 342. Matching concave edge; 343. Insertion hole; 4. Limiting unit; 41. Cover shell 1; 411. Mounting ear; 412. Arc sleeve; 413. Insertion shaft; 42. Cover shell 2; 43. Inner ball layer; 431. Perforation; 432. Petal groove; 44. Elastic part; 5. Elastic unit; 51. Ferrule; 52. Connecting shaft; 53. Metal strip; 6. Wire body. DETAILED DESCRIPTION

[0023] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0024] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0025] This embodiment mainly describes the electric energy meter box and the intelligent power distribution system. Figures 1-9, specifically as follows: the electric energy meter 2 in the electric energy meter box needs to be connected to the electric wire, and the electric wire needs to be passed into the electric energy meter box. The electric wire will swing under the influence of external force or environment, which will also generate force on the terminal connecting the electric wire and the electric energy meter 2, so that the pulling force is almost completely transmitted to the connection point between the electric wire and the terminal, thereby causing the screws of the electric wire connection terminal to loosen. Although the electric wire can be fixed to a certain extent to solve the above problem, it is necessary to maintain an extrusion force on the electric wire when fixing it. Even if the extrusion force is small, the position where the electric wire is fixed will cause wear when the electric wire moves, causing the insulation layer of the electric wire to be easily damaged. In addition, it should be noted that when fixing the electric wire, the extrusion force generated is small, and the degree of fixation is low. When the external force is increased, the electric wire will become loose. Based on this, an electric energy meter box is proposed, such as Figure 1 、 Figure 6-Figure 8 As shown, it includes a box body 1, an electric energy meter 2 is provided inside the box body 1, and a wire body 6 is connected to the outside of the electric energy meter 2. A limit unit 4 is also installed in the box body 1, and the limit unit 4 includes: The cover shell 1 41 and the cover shell 2 42 are both disposed in the box body 1 and cooperate with each other. The cover shell 1 41 and the cover shell 2 42 serve as a shell for limiting the position of the wire body 6; The two sets of inner ball layers 43 are sandwiched between the cover shell 1 41 and the cover shell 2 42 . The wire body 6 passes through the two sets of inner ball layers 43 and is fixed thereto. The wire body 6 located between the two sets of inner ball layers 43 has a margin. The elastic member 44 is fixed between the two sets of inner ball layers 43, and the middle position of the elastic member 44 is fixed to the inner wall of the cover shell 1 41, and is used to reset the two sets of inner ball layers 43 to the middle position; wherein, When the two sets of inner ball layers 43 move toward the ends of the first cover 41 and the second cover 42 respectively, the wire body 6 is gradually squeezed and fixed.

[0026] Specifically, the two sets of inner spheres 43 are located between cover 1 41 and cover 2 42 , and the wire body 6 passes through the two sets of inner spheres 43 . When the wire body 6 is stretched, the inner spheres 43 move and create a compressive force against the inner walls of cover 1 41 and cover 2 42 , thereby securing the wire body 6 . When the wire body 6 is not under tension, the two sets of inner spheres 43 , under the action of the elastic member 44 , move toward the middle of cover 1 41 and cover 2 42 , preventing the inner spheres 43 from being squeezed by cover 1 41 and cover 2 42 and reducing the compressive force exerted by the inner spheres 43 on the wire body 6 .

[0027] like Figure 6 As shown, the edges of the mating surfaces of the cover shell 1 41 and the cover shell 2 42 are integrally provided with mounting ears 411 , and the mounting ears 411 on the cover shell 1 41 and the cover shell 2 42 are in contact with and fixed to each other by bolts.

[0028] Specifically, when the wire body 6 passes through the two groups of inner ball layers 43, it is necessary to clamp the two groups of inner ball layers 43 between the cover shell 1 41 and the cover shell 2 42, and then install the cover shell 1 41 and the cover shell 2 42 on the mounting ear 411 with bolts, and set the cover shell 1 41 and the cover shell 2 42 to be detachable, so that the wire body 6 can be passed through between the two groups of inner ball layers 43, which is convenient for operation.

[0029] like Figure 6 As shown, both ends of the cover shell 1 41 and the cover shell 2 42 are integrally provided with an arc sleeve 412, and the cross section of the arc sleeve 412 is a circular ring. The arc sleeves 412 on the cover shell 1 41 and the cover shell 2 42 cooperate with each other to form a complete circular ring; The outer wall of the arc sleeve 412 is smooth, and the arc sleeve 412 on the cover shell 1 41 and the cover shell 2 42 transitions smoothly with the inner walls of the cover shell 1 41 and the cover shell 2 42 respectively. The wire body 6 passes through the arc sleeve 412 on the cover shell 1 41 and the cover shell 2 42, and the wire body 6 contacts the arc sleeve 412 when bent.

[0030] Specifically, when the wire body 6 passes through both ends of the cover shell 1 41 and the cover shell 2 42, the position where the wire body 6 passes through is prone to tilt or bend. When the wire body 6 tilts or bends, the outer wall of the wire body 6 contacts the arc sleeve 412, which limits the bending degree of the wire body 6 to a certain extent, so that the wire body 6 presents a U-shape when bent, avoiding the wire body 6 from being directly bent and squeezed to cause damage.

[0031] like Figure 8 As shown, the inner ball layer 43 is provided with an axially extending through hole 431 , the wire body 6 passes through the through hole 431 , and the inner wall of the through hole 431 has a layer of adhesive for adhering the through hole 431 to the wire body 6 ; The outer wall of the inner ball layer 43 is coated with a polytetrafluoroethylene coating to reduce friction between it and the inner walls of the cover shell 1 41 and the cover shell 2 42 .

[0032] Specifically, in order to make the inner ball layer 43 on the outside of the wire body 6 move with it, the inner wall of the perforation 431 is provided with a rubber layer that adheres to the wire body 6. In addition, the inner ball layer 43 needs to move along the inside of the cover shell 1 41 and the cover shell 2 42. Therefore, in order to reduce friction, the outer wall of the inner ball layer 43 is coated with a layer of polytetrafluoroethylene coating. Based on this, when the wire body 6 moves, the inner ball layer 43 moves with it, and the inner ball layer 43 is squeezed with the inner wide and outer narrow structure parts of the cover shell 1 41 and the cover shell 2 42.

[0033] like Figure 8As shown, both ends of the inner ball layer 43 are provided with cross-shaped flaps 432, which are used to divide the through-hole 431. Specifically, when the wire body 6 passes through the through-hole 431 of the inner ball layer 43, the inner ball layer 43 opens the flaps 432 outward, making it easier for the wire body 6 to extend into the through-hole 431. After the wire body 6 passes through the through-hole 431, the adhesive layer needs to be adhered. The flaps 432 are opened outward, and the adhesive layer is applied inside them. Then, it is pressed to bond with the wire body 6.

[0034] like Figure 8 As shown, the middle of elastic member 44 is welded to the inner wall of cover 1 41. Elastic member 44 is a spring, and its axis coincides with the axes of cover 1 41 and cover 2 42. Elastic member 44 is fixed in the middle of cover 1 41. When one end of the spring is stretched, only half of the spring is stretched. When no force is applied, the spring can be reset.

[0035] like Figure 8 As shown, when cover shell 1 41 and cover shell 2 42 are matched, the middle section thereof is in the shape of a straight tube, and the two ends thereof are in a wide inner and narrow outer structure. The inner ball layer 43 is arranged on the inner side of the wide inner and narrow outer parts at both ends of cover shell 1 41 and cover shell 2 42. When the inner ball layer 43 moves outward, it is squeezed against the narrow position of cover shell 1 41 and cover shell 2 42, so that the inner ball layer 43 applies an extrusion force to the wire body 6 inside thereof.

[0036] Specifically, according to the matching internal shapes of cover shell 1 41 and cover shell 2 42, the middle is straight tube-shaped, and the two ends are gradually closed. The inner ball layer 43 is located in the middle straight tube position of cover shell 1 41 and cover shell 2 42. When the wire body 6 is subjected to tension, the inner ball layer 43 moves under the force and moves to the position where the two ends of cover shell 1 41 and cover shell 2 42 are gradually closed, so that the inner ball layer 43 is squeezed by cover shell 1 41 and cover shell 2 42, and at the same time, the inner ball layer 43 also squeezes the internal wire body 6 to prevent the wire body 6 from moving outward.

[0037] like Figure 9 As shown, the box body 1 also has an elastic unit 5 for creating a margin for the wire body 6. The elastic unit 5 includes a plurality of ferrules 51 for sleeved on the wire body 6. The plurality of ferrules 51 are distributed in a "U"-shaped array. Elastic metal strips 53 are fixed between the ferrules 51 and the adjacent ferrules 51. A connecting shaft 52 is fixed to the outside of one of the ferrules 51, and the connecting shaft 52 is used to be fixed to the inside of the box body 1.

[0038] Specifically, under the action of the elastic unit 5, the wire body 6 is stretched to a U-shaped state. When the wire body 6 is stretched by an external force, the wire body 6 in the U-shaped state will be deformed into a straight line. The wire body 6 has a buffering step when it is acted upon by an external force, which avoids directly generating a pulling force on the limiting unit 4 when stretched by an external force.

[0039] like Figure 3-Figure 5 As shown, a fixing unit 3 is further installed in the box body 1, and the fixing unit 3 includes a shaft 31 fixed in the box body 1, and a slide groove 32 extending along the shaft 31 is provided on the shaft 31, and a slider 33 is slidably installed in the slide groove 32, and the slider 33 is squeezed with the inner wall of the slide groove 32; The outer end surface of the slider 33 is mounted with an adjustment plate 34 that can be rotated to adjust the position. The outer side of the adjustment plate 34 is provided with a socket 343. The rear end surface of the cover shell 41 is integrally provided with an insertion shaft 413 that cooperates with the socket 343. A mating hole 331 is provided on the outside of the slider 33, and a mating tube 341 fixed to the adjustment plate 34 is sleeved in the mating hole 331. An inner spring 332 is fixed between the inner wall of the mating hole 331 and the inner end wall of the mating tube 341. A mating convex edge 333 distributed along a circle of the mating hole 331 is fixed on the outer side of the slider 33. The side of the adjustment plate 34 close to the slider 33 has a circle of mating concave edge 342 that cooperates with the mating convex edge 333.

[0040] Specifically, the slider 33 can be slid on the shaft 31 and adjusted to a suitable position, and by pulling the adjustment plate 34 outward, the mating convex edge 333 and the mating concave edge 342 are disengaged, and the adjustment plate 34 can be rotated, and under the action of the inner spring 332, the mating convex edge 333 and the mating concave edge 342 are mated to achieve the angle adjustment of the adjustment plate 34. It should be noted that the limit unit 4 is fixed to the adjustment plate 34, so that the limit unit 4 also changes its direction to adapt to different electricity meters 2.

[0041] The present invention provides an intelligent power distribution system, comprising the above-mentioned electric energy metering box.

[0042] Working principle: Figure 6-Figure 8 The structure of the limiting unit 4 is shown. The wire body 6 passes through the two sets of inner ball layers 43 from bottom to top, as well as the elastic member 44 between the two inner ball layers 43. The connection end of the wire body 6 is then connected to the electric energy meter 2. The limiting unit 4 replaces the conventional fixing structure. When the wire body 6 is not under stress, the elastic member 44 in the middle position stretches the inner ball layers 43 at both ends toward the middle, so that the inner ball layers 43 at both ends are located in the straight tube-shaped position between the cover shell 1 41 and the cover shell 2 42. The two sets of inner ball layers 43 are not squeezed as much as possible, and the wire body 6 clamped in the two sets of inner ball layers 43 is also squeezed as little as possible, so that the clamped wire body 6 will not be squeezed to the point of damaging the insulating layer, thereby extending its service life. Secondly, when the wire body 6 is subjected to tension, since there is a margin of the wire body 6 between the two sets of inner ball layers 43, when the outer end of the wire body 6 is stretched, the inner ball layer 43 at one end moves along the inner wall of the cover shell 1 41 and the cover shell 2 42, and the position of the margin is stretched to a certain extent. At the same time, the pulled inner ball layer 43 is stuck in the part where the cover shell 1 41 and the cover shell 2 42 are matched, so that the inner ball layer 43 is squeezed and the inner wire body 6 is squeezed at the same time, thereby fixing the wire body 6. At the same time, because the inner ball layer 43 is in a flexible squeezing effect on the inner wire body 6, the insulation layer and the internal filaments of the wire are prevented from being damaged. Later, when the wire body 6 is no longer under force, the inner ball layer 43 inside will recover under the action of the elastic member 44, preventing the inner ball layer 43 from being in a squeezed state and causing damage to the wire body 6. It should be noted that under the action of the limiting unit 4, the connection terminal of the wire body 6 can be prevented from being subjected to stress, thereby avoiding risks. Secondly, the limiting unit 4 automatically relaxes the wire body 6 without pulling the wire body 6. Only when the wire body 6 is pulled, the limiting unit 4 clamps and fixes the wire body 6, thereby preventing the wire body 6 from being squeezed as much as possible to avoid safety hazards.

[0043] In addition, it should be noted that when the inner ball layer 43 is squeezed at the part where the cover shell 1 41 and the cover shell 2 42 are wide inside and narrow outside, the outer wall of the inner ball layer 43 has a layer of polytetrafluoroethylene coating, and its inner wall has a glue layer bonded to the wire body 6. Therefore, when the wire body 6 moves, it can easily drive the inner ball layer 43 to slide along the inner walls of the cover shell 1 41 and the cover shell 2 42, and squeeze with the part where the cover shell 1 41 and the cover shell 2 42 are wide inside and narrow outside.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0045] The above is a detailed introduction to the electric energy meter box and intelligent power distribution system provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in several ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An electric energy meter box, comprising a box body, an electric energy meter inside the box body, and an electric wire body connected to the electric energy meter, characterized in that: A limit unit is also installed in the box, which includes: The first cover shell and the second cover shell are both arranged in the box body and cooperate with each other; Two sets of inner ball layers are clamped between the first cover shell and the second cover shell. The wire body passes through the two sets of inner ball layers and is fixed. The wire body located between the two sets of inner ball layers has a margin. The elastic member is fixed between the two groups of inner ball layers, and the middle position of the elastic member is fixed to an inner wall of the cover shell, and is used to reset the two groups of inner ball layers to the middle position; wherein, When the two groups of inner ball layers move toward the ends of the first cover shell and the second cover shell respectively, the wire body is gradually squeezed and fixed.

2. The electric energy meter box according to claim 1, characterized in that: The edges of the mating surfaces of the cover shell 1 and the cover shell 2 are integrally provided with mounting ears, and the mounting ears on the cover shell 1 and the cover shell 2 are in contact with each other and fixed by bolts.

3. The electric energy meter box according to claim 1, characterized in that: Both ends of the cover shell 1 and the cover shell 2 are integrally provided with arc sleeves, the cross section of the arc sleeves is a circular ring, and the arc sleeves on the cover shell 1 and the cover shell 2 cooperate with each other to form a complete circular ring; The outer wall of the arc sleeve is smooth, and the arc sleeves on the cover shell one and the cover shell two transition smoothly with the inner walls of the cover shell one and the cover shell two respectively. The wire body passes through the arc sleeves on the cover shell one and the cover shell two, and the wire body contacts the arc sleeve when it is bent.

4. The electric energy meter box according to claim 1, characterized in that: A through hole is axially opened in the inner ball layer, the wire body passes through the through hole, and the inner wall of the through hole has a layer of glue for adhering the through hole to the wire body; The outer wall of the inner ball layer is coated with a polytetrafluoroethylene coating to reduce friction between it and the inner walls of the cover shell 1 and the cover shell 2.

5. The electric energy meter box according to claim 4, characterized in that: Both ends of the inner ball layer are provided with cross-shaped valve grooves, and the cross-shaped valve grooves are used to divide the perforation.

6. The electric energy meter box according to claim 1, characterized in that: The middle position of the elastic member is welded to the inner wall of the first cover shell. The elastic member is a spring, and the axis thereof coincides with the axes of the first cover shell and the second cover shell.

7. The electric energy meter box according to claim 1, characterized in that: When cover shell one and cover shell two are matched, the middle section thereof is in the shape of a straight tube, and the two ends thereof are a structure with a wide inner side and a narrow outer side. The inner ball layer is arranged on the inner side of the wide inner side and the narrow outer side parts at both ends of cover shell one and cover shell two. When the inner ball layer moves outward, it is squeezed against the narrow position of cover shell one and cover shell two, so that the inner ball layer exerts an extrusion pressure on the wire body inside it.

8. The electric energy meter box according to claim 1, characterized in that: The box also has an elastic unit for creating a margin for the wire body. The elastic unit includes multiple ferrules for sleeved on the wire body. The multiple ferrules are distributed in a "U"-shaped array. Elastic metal strips are fixed between the ferrules and adjacent ferrules. A connecting shaft is fixed to the outside of one of the ferrules, and the connecting shaft is used to be fixed to the inside of the box.

9. The electric energy meter box according to claim 1, characterized in that: A fixing unit is also installed in the box body, and the fixing unit includes a shaft fixed in the box body, the shaft having a slide groove extending along the shaft, a slider is slidably installed in the slide groove, and the slider is squeezed against the inner wall of the slide groove; An adjusting plate that can be rotated to adjust the position is installed on the outer end surface of the slider, a socket is opened on the outer side of the adjusting plate, and a plug shaft that matches the socket is integrated on the rear end surface of the cover shell; A matching hole is provided on the outside of the slider, and a matching cylinder fixed to the adjustment plate is sleeved in the matching hole. An inner spring is fixed between the inner wall of the matching hole and the inner end wall of the matching cylinder. A matching convex edge distributed along a circle of the matching hole is fixed on the outer side of the slider, and a matching concave edge is provided on the side of the adjustment plate close to the slider to match the matching convex edge.

10. Intelligent power distribution system, characterized in that: The utility model comprises the electric energy metering box as described in any one of claims 1 to 9.

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