Modularized electric energy metering box

Abstract

The invention relates to the technical field of electric power metering equipment, and discloses a modular electric energy metering box which comprises a metering box body, positioning pins are arranged at the upper end and the lower end of the rear side of the metering box body, and each positioning pin can be adjusted up and down in the vertical direction to penetrate in and out of the metering box body; the positioning pin penetrates out of the metering box body and then is connected with a fixing frame. The device is convenient to mount and demount, free of repeated trepanning operation on a mounting surface, capable of avoiding damage to the mounting surface, simple in structure and high in practicability.

Description

Technical Field

[0001] This invention relates to the field of power metering equipment technology, and in particular to a modular power metering box. Background Technology

[0002] In the power transmission and distribution process of the power system, the power metering box, as the core equipment for power metering, data acquisition and transmission, is widely used in various scenarios such as residential buildings, commercial buildings, and industrial plants. Its installation stability and ease of maintenance directly affect the accuracy of power metering and the efficiency of operation and maintenance. Currently, the installation method for existing electricity metering boxes generally adopts a direct fixing structure design. This involves pre-drilling mounting holes on the metering box casing, and during installation, expansion bolts, self-tapping screws, and other fasteners are passed through these holes to directly secure the metering box to a designated mounting surface such as a wall, concrete support, or steel structure. While this traditional installation structure is simple to install initially and has low cost, it has gradually revealed many unavoidable technical defects during long-term use and actual operation and maintenance, and can no longer meet the demands of modern power operation and maintenance for high efficiency, safety, and low loss. First, the poor reusability of mounting holes leads to severe damage to the mounting surface. During long-term operation, electricity metering boxes may require frequent disassembly, maintenance, or complete replacement due to aging metering components, circuit faults, or technical upgrades. In traditional installation methods, unavoidable mechanical wear exists between the fixing bolts and the mounting holes. Repeated disassembly and reassembly can cause stripping of the inner wall of the mounting hole and an increase in hole diameter, rendering the original mounting hole ineffective for secure installation. In this case, maintenance personnel can only re-drill holes near the original installation location. Repeated wall drilling not only damages the appearance of the wall and support structure but also, for civil buildings, can damage the brick structure or concrete strength. Frequent drilling on load-bearing walls significantly reduces structural stability, creating long-term safety hazards. For steel structure supports in industrial settings, additional drilling may also affect the load-bearing capacity and corrosion resistance of the supports, shortening their service life. Secondly, the subsequent maintenance operations are complex, significantly increasing operation and maintenance costs. Under traditional installation methods, each replacement or repair of the metering box requires repositioning, drilling, and fixing. The entire process requires carrying specialized drilling tools and is limited by the installation environment (such as working at heights or in confined spaces), making the operation difficult. This not only consumes a lot of manpower and time but also may lead to safety accidents due to improper operation. At the same time, after re-drilling, the area around the hole needs to be repaired, further increasing maintenance costs. In addition, changing the installation position multiple times may cause the metering box to shift at the installation angle or become loosely fixed, which in turn affects the force balance of the metering components inside the box and may even cause a decrease in metering accuracy due to vibration, indirectly affecting the accuracy of electricity metering. Therefore, there is an urgent need for a modular power metering box installation structure that can avoid repeated drilling, ensure installation stability, and simplify maintenance operations, in order to solve the above-mentioned defects in the existing technology. Summary of the Invention

[0003] The purpose of this invention is to provide a modular energy metering box that is easy to install and disassemble, eliminates the need for repeated drilling on the mounting surface, avoids damage to the mounting surface, has a simple structure, and is highly practical.

[0004] The present invention adopts the following technical solution: A modular energy metering box includes a metering box body. Positioning pins are provided at both the upper and lower ends of the rear side of the metering box body. Each positioning pin can be adjusted vertically to pass through and out of the metering box body. After passing through the metering box body, the positioning pin is connected to a fixing frame.

[0005] Preferably, the fixing frame has an L-shaped structure.

[0006] Preferably, the fixing frame is provided with a protective frame on the outside, and the fixing frame is symmetrically arranged at the upper and lower ends of the protective frame; the metering box body has a protruding mounting cavity on the rear side, the height of the mounting cavity is not higher than the distance between the two fixing frames, and the width of the mounting cavity is not greater than the width of the inner cavity of the protective frame; the positioning pin is located at the upper and lower ends of the mounting cavity.

[0007] Preferably, the size of the protective frame matches the size of the metering box body.

[0008] Preferably, the protective frame is threaded with an adjusting rod, and the bottom of the adjusting rod is provided with a cam; the fixing frame is provided with a positioning hole for the positioning pin to pass through, and the positioning hole is an elongated hole; after the positioning pin passes into the positioning hole, rotating the adjusting rod drives the cam to rotate, and the cam pushes the positioning pin to move in the positioning hole, thereby completing the tight contact between the metering box body and the protective frame.

[0009] Preferably, the locating pin end is elastically disposed within the mounting cavity, and the locating pin end is provided with a locating groove; during installation, as the adjusting rod is screwed in, the adjusting rod moves outward from the protective frame, and at the same time, the cam enters the locating groove and drives the locating pin to move outward from the mounting cavity.

[0010] Preferably, the top of the adjusting rod has a recessed driving groove.

[0011] Preferably, the rear sidewall of the mounting cavity is configured as a breathable mesh structure; and heat dissipation grooves are provided on both sides of the protective frame.

[0012] Preferably, a filter screen is provided inside the heat dissipation groove.

[0013] Preferably, two positioning pins are provided at each of the upper and lower ends of the metering box body.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention uses vertically adjustable positioning pins at both the upper and lower ends of the rear side of the metering box body. The positioning pins, in conjunction with the fixing frame, achieve the installation and fixation of the metering box body, completely eliminating the traditional design of drilling mounting holes in the metering box body and directly locking it to the mounting surface with bolts. When the metering box body needs to be disassembled, repaired, or replaced later, only the positioning pins need to be adjusted to detach it from the fixing frame and retract it into the metering box body to complete the disassembly. The entire process does not require re-drilling holes in the mounting surface. This not only avoids the damage to the brick structure and concrete strength of civil building walls caused by repeated wall drilling, preventing a decrease in the stability of load-bearing wall structures, but also avoids problems such as reduced load-bearing capacity and corrosion resistance of steel structure supports in industrial settings due to additional drilling. It fundamentally protects the appearance integrity and structural safety of the mounting surface, eliminating the long-term safety hazards caused by traditional installation methods. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the protective frame of the present invention; Figure 3 This is a schematic diagram of the metering box body of the present invention; Figure 4 This is a schematic diagram of the internal structure of the metering box of the present invention; Figure 5 This is the front view of the positioning pin of the present invention. Detailed Implementation

[0016] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments: like Figures 1 to 5 As shown, the modular energy metering box of the present invention includes a metering box body 1. Positioning pins 2 are provided on both sides of the upper and lower rear ends of the metering box body 1. Each positioning pin 2 can be adjusted vertically to pass through and out of the metering box body 1. After passing through the metering box body 1, the positioning pin 2 connects to a fixing frame 3. The fixing frame 3 has two parts, upper and lower, each with mounting holes 4. It is fixed to the mounting surface by bolts. When the metering box body 1 needs to be disassembled, only the positioning pins 2 need to be adjusted to move out of the fixing frame 3; there is no need to loosen the bolts on the mounting surface, thus avoiding damage to the mounting surface and protecting the appearance integrity and structural safety of the mounting surface.

[0017] Preferably, the fixing frame 3 has an L-shaped structure and is made of high-strength metal with an external insulating material to provide stable support for the metering box body 1. A protective frame 5 is provided on the outside of the fixing frame 3, and the fixing frame 3 is symmetrically arranged at the upper and lower ends of the protective frame 5. The setting of the protective frame 5 can protect the connection structure and prevent the connection point from being exposed to the outside for a long time, suffering from external wind and rain erosion, which will affect its service life. The rear side of the metering box body 1 has a protruding mounting cavity 6, which is connected to the metering box body 1. The positioning pin 2 is located at the upper and lower ends of the mounting cavity 6. The mounting cavity 6 and the metering box body 1 are integrally formed. The height of the mounting cavity 6 is not higher than the distance between the two fixing frames 3, so that it can be placed between the two fixing frames 3 to realize the connection between the positioning pin 2 and the fixing frame 3. In addition, the width of the mounting cavity 6 is not greater than the width of the inner cavity of the protective frame 5, so that the mounting cavity 6 is placed inside the protective frame 5. Preferably, the size of the protective frame 5 matches the size of the metering box body 1, ensuring that after the metering box body 1 is installed, the rear side of the metering box body 1 is in close contact with the front end of the protective frame 5. A sealing gasket is provided on the contact end face to ensure the sealing of the connection and prevent dust and rainwater from entering through this joint.

[0018] Preferably, the protective frame 5 is threaded with an adjusting rod 7, and the top of the adjusting rod 7 is recessed to form a driving groove 8. The driving groove 8 can be a structure that matches the end of a screwdriver, making it convenient to rotate the adjusting rod 7 with the help of a tool. The bottom of the adjusting rod 7 is located inside the protective frame 5 and is provided with a cam 9. The fixing frame 3 is provided with a positioning hole 10 for the positioning pin 2 to pass through, and the positioning hole 10 is an elongated hole. After the positioning pin 2 passes into the positioning hole 10, rotating the adjusting rod 7 drives the cam 9 to rotate, and the cam 9 pushes the positioning pin 2 to move in the positioning hole 10, which can complete the tight contact between the metering box body 1 and the protective frame 5 and improve the tightness of the connection between the two. The positioning pin 2 is elastically set in the mounting cavity 6 via the spring 11, and a positioning groove 13 is provided on one side of the end of the positioning pin 2. During installation, the positioning pin 2 is pushed into the positioning hole 10 on the fixing frame 3. Since the adjusting rod 7 is threadedly connected to the protective frame 5, rotating the adjusting rod 7 can move it outward from the protective frame 5 (i.e., the upper adjusting rod 7 rotates to move it to the upper part of the protective frame 5, and the lower adjusting rod rotates to move it to the lower part of the protective frame 5). At the same time, the cam 9 will enter the positioning groove 13. While pushing the positioning pin 2 along the positioning hole 10, it will also drive the positioning pin 2 to move outward from the mounting cavity 6, thus pulling and positioning the positioning pin 2 to ensure its stability. At this time, the spring 11 is in a compressed state. Due to the influence of space and size, the size of the positioning groove and the positioning hole will not be too large, so the adjustment range of the adjusting rod 7 will not be too large. The specific size can be matched and set by the staff according to the actual size of the metering box body and the installation space.

[0019] Furthermore, the rear side wall of the mounting cavity 6 is designed with a breathable mesh structure; heat dissipation grooves 14 are provided on both sides of the protective frame 5 for heat dissipation inside the metering box; preferably, a filter screen 15 is provided inside the heat dissipation groove 14 to prevent dust from entering the metering box and affecting the normal operation of electrical components.

[0020] During installation, the mounting bracket 3 is connected to the protective frame 5 and fixed to the mounting surface using the mounting holes 4 on the mounting bracket 3. Then, the mounting cavity 6 on the metering box is placed between the upper and lower mounting brackets 3 inside the protective frame 5. Finally, the positioning pin 2 is pushed to extend from the mounting cavity 6 into the positioning hole 10, and the corresponding adjusting rod 7 is rotated. The cam 9 pushes the positioning pin 2 to move in the positioning hole 10 and pulls and positions the positioning pin 2, ensuring the tightness and stability of the connection between the metering box body 1, the protective frame 5, and the mounting bracket 3.

Claims

1. A modular electricity metering box comprising a metering box body, characterised in that: The rear side of the metering box body is provided with positioning pins at the upper and lower ends, each of which can be adjusted up and down in the vertical direction to complete the penetration in and out of the metering box body; the positioning pins are connected with the fixed frame after penetrating out of the metering box body.

2. The modular electric energy metering box according to claim 1, characterized in that: The fixed frame is of L-shaped structure.

3. The modular electric energy metering box according to claim 2, characterized in that: The fixed frame is externally provided with a protective frame, and the fixed frame is symmetrically arranged at the upper and lower ends of the protective frame; the rear side of the metering box body is protrusively provided with a mounting cavity, the height of the mounting cavity is not higher than the spacing between the two fixed frames, and the width of the mounting cavity is not greater than the width of the inner cavity of the protective frame; the positioning pins are located at the upper and lower ends of the mounting cavity.

4. The modular electric energy metering box according to claim 3, characterized in that: The size of the protective frame matches the size of the metering box body.

5. The modular electric energy metering box of claim 3, wherein: The protective frame is externally provided with an adjusting rod, and the bottom of the adjusting rod is provided with a cam; the fixed frame is provided with a positioning hole for the positioning pin to pass through, and the positioning hole is a long slot; after the positioning pin is passed into the positioning hole, the adjusting rod is rotated to drive the cam to rotate, the cam pushes the positioning pin to move in the positioning hole, and the close contact between the metering box body and the protective frame is completed.

6. The modular electric energy metering box according to claim 5, characterized in that: The end of the positioning pin is elastically arranged in the mounting cavity, and the end of the positioning pin is provided with a positioning groove; during installation, the adjusting rod is adjusted in a spiral manner, the adjusting rod moves outward of the protective frame, at the same time, the cam enters the positioning groove, and the positioning pin moves outward of the mounting cavity.

7. The modular electric energy metering box of claim 5, wherein: The top of the adjusting rod is concave to form a driving groove.

8. The modular electric energy metering box of claim 3, wherein: The rear side wall of the mounting cavity is provided with a mesh structure for ventilation; the protective frame is provided with a heat dissipation groove on both sides.

9. The modular electric energy metering box according to claim 8, characterized in that: The heat dissipation groove is provided with a filter screen.

10. The modular electric energy metering box of claim 1, wherein: The metering box body is provided with two positioning pins at each of the upper and lower ends.

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