A protection device for a three-phase electric energy meter

Abstract

The utility model discloses a kind of protective devices for three-phase electric energy meter, it is related to electric energy meter technical field, the utility model, by setting baffle, protective plate and a series of structural components such as stop block, in the process of three-phase electric energy meter body being put into use, it can be precisely covered in the terminal post position of three-phase electric energy meter body bottom side by protective plate.This protective plate has double protection efficacy, on the one hand, it can effectively block the direct contact of external factors to terminal post, provides reliable physical protection for terminal post, avoids terminal post and appears damage or contact problem such as bad contact due to external force impact, dust accumulation etc.;On the other hand, when electrician carries out live working, the protective plate can form a safe barrier, significantly reduce the possibility that electrician uses metal tool and terminal post miscontact, to realize two-way safety protection to three-phase electric energy meter body and electrician, guarantee the smooth progress of electric power operation and personnel safety.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, specifically a protective device for three-phase electricity meters. Background Technology

[0002] Three-phase energy meters are specialized instruments used to measure the electrical energy consumption in three-phase AC circuits. They are widely used in industry, commerce, and large buildings. With high-precision metering capabilities, they accurately record the active and reactive energy in a three-phase circuit, providing reliable data for the statistical analysis of electricity usage. Internally, they employ advanced electronic technology or mechatronics design to ensure the accuracy and stability of metering. Three-phase energy meters come in various types, such as mechanical, electronic, and smart meters. Smart three-phase energy meters are particularly powerful, offering not only basic metering but also remote data transmission, real-time monitoring, and prepayment functions, facilitating electricity management for power companies and users.

[0003] In some remote rural areas, three-phase electricity meters pose certain safety hazards in practical applications. Their design lacks protective structures for the wiring locations, and electricians inevitably use various metal tools when performing live operations. Because the wiring locations of three-phase electricity meters are directly exposed to the air without necessary isolation and protection, metal tools can easily come into accidental contact with live wiring. Once this happens, the current will be conducted through the metal tool to the electrician's body, causing an electric shock accident and seriously threatening the electrician's life.

[0004] Therefore, a protective device for three-phase electricity meters is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a protective device for three-phase electricity meters to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective device for a three-phase energy meter, comprising a three-phase energy meter body, a protective mechanism on the three-phase energy meter body, the protective mechanism comprising a partition plate, the partition plate being fixedly installed on the back side of the three-phase energy meter body by bolts, two vertically symmetrically formed limiting grooves on the partition plate, limiting sliders being vertically slidably installed on the inner walls of the two limiting grooves, a protective plate being fixedly installed on the two limiting sliders, the protective plate covering the three-phase energy meter body, and a retaining mechanism provided on the partition plate, the retaining mechanism being installed on the protective plate.

[0007] Preferably, a guide rod is fixedly installed inside the limiting groove, and the limiting slider is slidably installed on the guide rod.

[0008] Preferably, a return spring is sleeved on the guide rod, one end of the return spring is fixedly installed on the inner wall of one side of the limiting groove, and the other end of the return spring is fixedly installed on the limiting slider.

[0009] Preferably, two blocks are fixedly installed on the partition, and the two blocks are in contact with one side of the protective plate respectively.

[0010] Preferably, the fixing mechanism includes two mounting cavities, and mounting cavities are provided on both sides of the partition. Locking blocks are slidably installed on the inner top walls of the two mounting cavities. Locking grooves are provided on both ends of the protective plate, and the two locking blocks are slidably installed inside the two locking grooves respectively.

[0011] Preferably, the bottom inner wall of the mounting cavity is provided with a guide groove, a guide block is slidably installed inside the guide groove, a push block is fixedly installed on the guide block, a transmission rod is hinged to one side of the push block, and the other end of the transmission rod is hinged to the bottom side of the locking block.

[0012] Preferably, a locking spring is fixedly installed on the inner wall of one end of the mounting cavity, and the other end of the locking spring is fixedly installed on the push block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model, through the ingenious arrangement of a series of structural components such as a partition, a protective plate, a limiting groove, a limiting slider, a guide rod, a reset spring, and a stop block, allows the protective plate to precisely cover the terminal positions on the bottom side of the three-phase energy meter body during its use. This protective plate has dual protective functions. On the one hand, it can effectively block external factors from directly contacting the terminal, providing reliable physical protection for the terminal and preventing damage or poor contact caused by external impacts, dust accumulation, etc. On the other hand, when electricians are performing live work, the protective plate can form a safety barrier, significantly reducing the possibility of accidental contact between the electrician and the terminal using metal tools. This achieves two-way safety protection for both the three-phase energy meter body and the electrician, ensuring the smooth progress of power operations and personnel safety.

[0015] (2) This utility model, through the setting of structures such as push block, locking spring, transmission rod, locking block, protective plate and locking groove, when the protective plate slides to the bottom side of the three-phase energy meter body, the locking block moves upward and inserts into the locking groove on the protective plate, thereby fixing the position of the protective plate, making it easy for the protective plate to be used stably, and preventing the protective plate from being broken by non-human factors when the electrician is operating live. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the unfolded structure of the protective plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the three-phase energy meter body, protective plate and stop block of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure of the push block, locking block and protective plate of this utility model;

[0020] In the diagram: 1. Three-phase energy meter body; 2. Partition plate; 21. Limiting groove; 22. Limiting slider; 23. Protective plate; 24. Guide rod; 25. Reset spring; 26. Stop block; 3. Mounting cavity; 31. Locking block; 32. Locking groove; 33. Guide groove; 34. Guide block; 35. Push block; 36. Transmission rod; 37. Locking spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figure 1-4This utility model provides a technical solution: a protective device for a three-phase energy meter, including a three-phase energy meter body 1, a protective mechanism on the three-phase energy meter body 1, the protective mechanism including a partition 2, the partition 2 being fixedly installed on the back side of the three-phase energy meter body 1 by bolts, two vertically symmetrical limiting grooves 21 being opened on the partition 2, and limiting sliders 22 being vertically slidably installed on the inner walls of the two limiting grooves 21, with protective plates 23 fixedly installed on the two limiting sliders 22, covering the three-phase energy meter body 1, two stops 26 being fixedly installed on the partition 2, the two stops 26 respectively contacting one side of the protective plate 23, a fixing mechanism being provided on the partition 2, the fixing mechanism being installed on the protective plate 23, a guide rod 24 being fixedly installed inside the limiting grooves 21, and the limiting sliders 22 being slidably installed on the guide rod 24. A return spring 25 is sleeved on the rod 24. One end of the return spring 25 is fixedly installed on the inner wall of one side of the limiting groove 21, and the other end of the return spring 25 is fixedly installed on the limiting slider 22. When the protective plate 23 is used to cover the wiring position on the bottom side of the three-phase energy meter body 1, the protective plate 23 only needs to be slid down. When the protective plate 23 moves to the position that contacts the stop block 26, the protective plate 23 just completely covers the wiring position on the three-phase energy meter body 1. At the same time, when the protective plate 23 covers the wiring position of the three-phase energy meter body 1, the protective plate 23 compresses the return spring 25. After the protective plate 23 is no longer restricted after use, the elastic restoring force of the return spring 25 can be used to drive the protective plate 23 to move automatically upward, thereby automatically exposing the wiring position on the three-phase energy meter body 1 for operation.

[0023] Furthermore, the partition 2 is provided with a locking mechanism for locking the protective plate 23 when it covers the bottom terminal of the three-phase energy meter body 1. The locking mechanism is installed on the protective plate 23.

[0024] Specifically, the retaining mechanism includes two mounting cavities 3. Mounting cavities 3 are provided on both sides of the partition plate 2. Locking blocks 31 are slidably mounted on the inner top walls of both mounting cavities 3. Locking grooves 32 are provided on both ends of the protective plate 23. The two locking blocks 31 are slidably mounted inside the two locking grooves 32. A guide groove 33 is provided on the inner bottom wall of the mounting cavity 3. A guide block 34 is slidably mounted inside the guide groove 33. A push block 35 is fixedly mounted on the guide block 34. A transmission rod 36 is hinged to one side of the push block 35, and the other end of the transmission rod 36 is hinged to the bottom side of the locking block 31. A locking spring 37 is fixedly mounted on the inner wall of one end of the mounting cavity 3, and the other end of the locking spring 37 is fixedly mounted on the push block 35. When the protective plate 23 moves downward, the bottom side of the protective plate 23 first contacts the arc-shaped surface of the locking block 31. After contact, it pushes the locking block 31 into the mounting cavity 3. When the protective plate 23 is pressed, the locking block 31 moves downward, causing the transmission rod 36 to rotate. The transmission rod 36 then causes the push block 35 to move to the right. The push block 35 compresses the locking spring 37. When the protective plate 23 continues to move to the limit position, the locking groove 32 on the protective plate 23 coincides with the position of the locking block 31. At this time, the elastic restoring force of the locking spring 37 causes the push block 35 to move to the left. The push block 35 causes the transmission rod 36 to rotate in the opposite direction. The transmission rod 36 causes the locking block 31 to move upward and insert into the locking groove 32 on the protective plate 23, thereby achieving automatic locking of the protective plate 23. After the protective plate 23 is used, the push block 35 can be manually pushed to the right. The push block 35 drives the transmission rod 36 to rotate, and the transmission rod 36 causes the locking block 31 to disengage from the locking groove 32 on the protective plate 23, allowing the protective plate 23 to slide freely on the three-phase energy meter body 1.

[0025] The working principle is as follows: During the installation and commissioning of the three-phase energy meter body 1, after connecting the terminals on the three-phase energy meter body 1 to the cable and energizing it, when the electrician is operating under power, he only needs to manually move the protective plate 23 downwards. The protective plate 23 drives the return spring 25 on the guide rod 24 to compress. When the protective plate 23 moves to contact the stop block 26 on the partition plate 2, the protective plate 23 can completely cover the terminals on the three-phase energy meter body 1, thus facilitating bidirectional protection for the three-phase energy meter body 1 and the electrician. At the same time, when the protective plate 23 moves downwards, the bottom side of the protective plate 23 first contacts the arc-shaped surface of the locking block 31, and then... Upon contact, the locking block 31 is pressed into the mounting cavity 3. The locking block 31 moves downward, causing the transmission rod 36 to rotate. The transmission rod 36 causes the push block 35 to move to the right. The push block 35 causes the locking spring 37 to compress. When the protective plate 23 continues to move to the limit position, the locking groove 32 on the protective plate 23 coincides with the position of the locking block 31. At this time, the elastic restoring force of the locking spring 37 causes the push block 35 to move to the left. The push block 35 causes the transmission rod 36 to rotate in the opposite direction. The transmission rod 36 causes the locking block 31 to move upward and insert into the locking groove 32 on the protective plate 23, thereby realizing the automatic locking of the protective plate 23.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for a three-phase electricity meter, comprising a three-phase electricity meter body (1), characterized in that: The three-phase energy meter body (1) is provided with a protective mechanism, which includes a partition (2). The partition (2) is fixedly installed on the back side of the three-phase energy meter body (1) by bolts. Two limiting grooves (21) are vertically symmetrically opened on the partition (2). Limiting sliders (22) are vertically slidably installed on the inner walls of the two limiting grooves (21). Protective plates (23) are fixedly installed on the two limiting sliders (22). The protective plates (23) cover the three-phase energy meter body (1). The partition (2) is provided with a fixing mechanism, which is installed on the protective plate (23).

2. A protective device for a three-phase electricity meter according to claim 1, characterized in that: A guide rod (24) is fixedly installed inside the limiting groove (21), and the limiting slider (22) is slidably installed on the guide rod (24).

3. A protective device for a three-phase electricity meter according to claim 2, characterized in that: A reset spring (25) is sleeved on the guide rod (24). One end of the reset spring (25) is fixedly installed on the inner wall of one side of the limiting groove (21), and the other end of the reset spring (25) is fixedly installed on the limiting slider (22).

4. A protective device for a three-phase energy meter according to claim 1, characterized in that: Two blocks (26) are fixedly installed on the partition (2), and the two blocks (26) are in contact with one side of the protective plate (23).

5. A protective device for a three-phase energy meter according to claim 1, characterized in that: The fixing mechanism includes two mounting cavities (3). Mounting cavities (3) are provided on both sides of the partition plate (2). Locking blocks (31) are slidably installed on the inner top walls of the two mounting cavities (3). Locking grooves (32) are provided on both ends of the protective plate (23). The two locking blocks (31) are slidably installed inside the two locking grooves (32).

6. A protective device for a three-phase energy meter according to claim 5, characterized in that: The bottom inner wall of the mounting cavity (3) is provided with a guide groove (33), and a guide block (34) is slidably installed inside the guide groove (33). A push block (35) is fixedly installed on the guide block (34), and a transmission rod (36) is hinged on one side of the push block (35). The other end of the transmission rod (36) is hinged to the bottom side of the locking block (31).

7. A protective device for a three-phase energy meter according to claim 6, characterized in that: A locking spring (37) is fixedly installed on the inner wall of one end of the mounting cavity (3), and the other end of the locking spring (37) is fixedly installed on the push block (35).

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