Power supply instrument with protection structure

Abstract

A power supply instrument with a protection structure disclosed by the present invention comprises a power supply instrument body, a protection mechanism is installed on the outer side of the power supply instrument body, the protection mechanism comprises a protection shell, a heat dissipation assembly is installed in the protection shell, a dustproof assembly is installed on the protection shell on the outer side of the heat dissipation assembly, and clamping assemblies are installed on the left side and the right side in the protection shell. The power supply instrument body is arranged between the clamping assemblies on the left side and the right side, the protective shell is provided with supporting sliding assemblies on the two sides of the bottom of the power supply instrument body, the protective shell is provided with a moisture-proof box on the top of the power supply instrument body, a plurality of through holes are formed in the two sides of the moisture-proof box, the moisture-proof box is filled with moisture-proof agents, and assembling frames are installed on the two sides of the protective shell. A cover plate is slidably mounted between the two side assembly frames, and a transparent plate is mounted on the cover plate at a position corresponding to the power supply instrument body.

Description

Technical Field

[0001] The invention belongs to the technical field of power supply instruments, and in particular relates to a power supply instrument with a protective structure. Background Art

[0002] Power supply meters are important equipment used to measure, monitor and control power parameters in power systems. They are widely used in various links such as power generation, transmission, distribution and consumption. Common power supply meters include energy meters, power meters, ammeters, voltmeters, etc. They provide key data support for the stable operation of power systems, power metering and fault diagnosis through accurate measurement and analysis of parameters such as voltage, current and power.

[0003] In order to improve the protection capability and service life of the power supply meter, a protective structure is often installed on its outside to protect the power supply meter. However, the protective structure of the existing power supply meter is prone to cracking and deformation when subjected to external force collision or extrusion, which in turn causes damage to the internal electronic components and affects the normal use of the meter. In addition, the existing protective structure is usually fixedly installed on the outside of the power supply meter, which makes disassembly and assembly complicated and tedious when the power supply meter needs to be maintained and repaired later. Therefore, there is an urgent need for a power supply meter with a protective structure to solve the above problems. Summary of the Invention

[0004] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a power supply meter with a protective structure.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows: A power supply meter with a protective structure includes a power supply meter body, a protective mechanism installed on the outside of the power supply meter body, the protective mechanism including a protective shell, a heat dissipation component installed in the protective shell, a dustproof component installed on the outside of the heat dissipation component of the protective shell, clamping components installed on the left and right sides of the interior of the protective shell, the power supply meter body is arranged between the clamping components on the left and right sides, the protective shell is installed with supporting sliding components on both sides of the bottom of the power supply meter body, the protective shell is installed with a moisture-proof box on the top of the power supply meter body, a plurality of through holes are provided on both sides of the moisture-proof box, the moisture-proof box is filled with a moisture-proof agent, assembly frames are installed on both sides of the protective shell, a cover plate is slidably installed between the assembly frames on both sides, and the cover plate is installed with a transparent plate at the corresponding power supply meter body.

[0006] The protective shell further defines a protective shell comprising an outer shell and an inner layer. The outer shell is manufactured from a high-strength aluminum alloy and formed integrally with a mold. A buffer layer is provided between the outer shell and the inner layer. The buffer layer is an elastic rubber buffer layer and is adhered to the inner side of the outer shell and the outer side of the inner layer with strong adhesive. The inner layer and the outer shell are fixedly connected by multiple screws. This structural design improves strength and disperses impact forces.

[0007] The heat dissipation assembly further defines a heat dissipation component comprising a heat dissipation fan and a plurality of heat dissipation fins, the heat dissipation fins being made of copper and fixedly mounted to the power supply meter body by welding, and a bracket being mounted on the outer side of the heat dissipation fan, which is fixedly mounted within the protective housing via the bracket. This structural design improves heat dissipation.

[0008] The dustproof assembly further defines that the dustproof assembly includes an assembly frame mounted on the outside of the protective shell, the assembly frame is provided with a limit assembly slot, a dustproof screen is slidably mounted in the limit assembly slot, the top of the dustproof screen is provided with a limit pressure strip, and both sides of the limit pressure strip are mounted in the limit assembly slot. This structural design has a dustproof effect.

[0009] The clamping assembly further comprises telescopic columns evenly arranged on the inner sidewall of the protective housing, the telescopic columns being connected to a clamping plate, the clamping surface of which being mounted with a flexible pad, and a spring sheathed on the outer side of the telescopic columns, one side of the spring being mounted on the inner sidewall of the protective housing, and the other side of the spring being mounted on the clamping plate. This structural design can clamp and secure the power supply meter body.

[0010] The support sliding assembly further defines a structure comprising an assembly seat mounted within a protective housing, a plurality of support springs mounted within the assembly seat, the free ends of the plurality of support springs being connected to the support seat, the bottom of the support seat being slidably disposed within the assembly seat, a roller seat being mounted on top of the support seat, and a plurality of rotating rollers being mounted on top of the roller seat. This structural design facilitates the sliding installation of the power supply meter body.

[0011] The invention further defines that the moisture-proof box has an opening on one side near the cover plate, a pull-out box is slidably mounted within the opening, the moisture-proof agent is placed on the pull-out box, and an auxiliary roller seat is mounted at the bottom of the moisture-proof box, with a plurality of auxiliary rotating rollers evenly mounted at the bottom of the auxiliary roller seat. This structural design facilitates the placement of the moisture-proof agent and cooperates with the supporting sliding assembly to clamp and slide the upper and lower sides of the power supply meter body.

[0012] It is further defined that the top of the assembly frame is provided with a slide groove with a T-shaped cross section, a pulley is slidably installed in the slide groove, a connecting block is installed between the pulleys on both sides, the connecting block is fixedly installed on the cover plate, a locking bar is rotatably installed on the outside of the assembly frame, a locking bolt is installed at the bottom of the locking bar, the lower side of the assembly frame is provided with a clearance hole corresponding to the locking bolt, the cover plate is provided with a threaded hole corresponding to the locking bolt, and one side of the locking bolt is locked and installed in the threaded hole. This structural design facilitates the sliding and fixing of the cover plate.

[0013] Further defined, the cover plate has a retractable press cover mounted on the outside of the transparent plate, the outer dimensions of the retractable press cover matching the inner dimensions of the protective shell, the cover plate has a sealing groove on the outside of the retractable press cover, a sealing strip is mounted in the sealing groove, the sealing strip is connected to a pressure strip, and the pressure strip is mounted on the protective shell, and a handle is mounted on the outer lower side of the cover plate. This structural design provides a sealing effect, preventing dust and impurities from entering through the gap between the cover plate and the protective shell.

[0014] Furthermore, the outer surface of the power supply meter body is also provided with an electromagnetic shielding net, which is a silver-plated copper net. Such a structural design can effectively reduce external electromagnetic interference and ensure the accuracy of the power supply meter body.

[0015] The beneficial effects of the present invention are: 1. The protective shell of the present invention adopts a high-strength aluminum alloy integrally formed shell with an inner layer and an elastic rubber buffer layer, which has both high strength and high toughness. When encountering external force collision or extrusion, the buffer layer can effectively absorb and disperse the impact force, greatly reducing the risk of shell cracking and deformation, and comprehensively protecting the internal power supply meter body, significantly improving the protection capability and service life of the power supply meter. At the same time, the silver-plated copper mesh electromagnetic shielding net on the outer surface of the power supply meter body can effectively shield external electromagnetic interference, ensuring the accuracy of the meter's measurement data and operational stability; 2. The copper heat sink in the heat dissipation assembly of the present invention can quickly absorb the heat generated by the power supply instrument body. In conjunction with the cooling fan, it can quickly discharge the heat, greatly improving the heat dissipation efficiency and avoiding damage to components due to overheating. The dustproof screen of the dustproof assembly effectively blocks the entry of external dust, ensuring the smooth discharge of internal heat. When cleaning or replacing, it is only necessary to remove the limit pressure strip and pull out the dustproof screen, which is easy to operate and has low maintenance costs. 3. The power supply meter body of the present invention is guided by the rotating roller supporting the sliding assembly and can be easily slid into the protective shell. At the same time, the clamping assembly is stretched to achieve clamping and fixing. The cover plate slides with the slide groove of the assembly frame through the pulley and is fixed with the locking bar and locking bolt after buckling. The installation process is simple and efficient. When maintenance and repair are required, the reverse operation can be quickly disassembled without complex tools and tedious steps, which significantly improves maintenance efficiency. 4. The present invention also provides a moisture-proof box and fills it with a moisture-proof agent, which can effectively absorb moisture in the protective shell. The design of the pull-out box is convenient for replacing the moisture-proof agent and is highly practical. In addition, the return-shaped press cover on the inside of the cover plate fits and seals with the inner wall of the protective shell, and cooperates with the sealing strip and the pressure strip to further enhance the sealing, prevent dust and impurities from entering, and create a good operating environment for the power supply meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings; Figure 1 This is a schematic diagram of the shaft-side structure of a power supply meter with a protective structure according to an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of a supporting sliding assembly of a power supply meter with a protective structure according to an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of a clamping assembly of a power supply meter with a protective structure according to an embodiment of the present invention; Figure 4 This is a schematic cross-sectional structure diagram of a lock bar of a power supply meter with a protective structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the enlarged structure of position A of a power supply meter with a protective structure according to an embodiment of the present invention; The main component symbols are described as follows: Power supply meter body 1, protective mechanism 2, protective shell 3, heat dissipation component 4, dustproof component 5, clamping component 6, support sliding component 7, moisture-proof box 8, through hole 9, assembly frame 10, cover 11, transparent plate 12, shell 13, inner layer 14, buffer layer 15, cooling fan 16, several heat sinks 17, assembly frame 18, limit assembly groove 19, dustproof mesh plate 20, limit pressure strip 21, telescopic column 22, splint 23, flexible pad 24, spring 25, assembly seat 26, support spring 27, support seat 28, roller seat 29, rotating roller 30, opening 31, pull-out box 32, auxiliary roller seat 33, auxiliary rotating roller 34, slide groove 35, pulley 36, connecting block 37, locking strip 38, locking bolt 39, air avoidance hole 40, threaded hole 41, return-type press cover 42, sealing groove 43, sealing strip 44, pressure strip 45, handle 46. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0018] Example 1, as Figure 1 、 Figure 2 and Figure 3As shown, a power supply meter with a protective structure is provided. A protective mechanism 2 is installed on the outside of the power supply meter body 1. The protective mechanism 2 includes a protective shell 3. A heat dissipation component 4 is installed in the protective shell 3. A dustproof component 5 is installed on the outside of the heat dissipation component 4 of the protective shell 3. Clamping components 6 are installed on the left and right sides of the interior of the protective shell 3. The power supply meter body 1 is arranged between the left and right clamping components 6. The protective shell 3 is provided with supporting sliding components 7 on both sides of the bottom of the power supply meter body 1. The protective shell 3 is provided with a moisture-proof box 8 on the top of the power supply meter body 1. A plurality of through holes 9 are provided on both sides of the moisture-proof box 8. The moisture-proof box 8 is filled with a moisture-proof agent. Assembly frames 10 are installed on both sides of the protective shell 3. A cover plate 11 is slidably installed between the assembly frames 10 on both sides. The cover plate 11 is provided with a transparent plate 12 at the corresponding power supply meter body 1.

[0019] In this embodiment, during installation, the power supply meter body 1 is first installed into the protective mechanism 2, so that the power supply meter body 1 slides into the protective shell 3 through the bottom support sliding component 7, and at the same time, the clamping components 6 on both sides are stretched open so that the clamping components 6 can be clamped. Then, the cover plate 11 is slid and installed into place along the assembly frame 10 to achieve all-round protection of the power supply meter body 1. When the power supply meter body is working, the heat dissipation component 4 performs heat dissipation, the dustproof component 5 blocks external dust from entering, and at the same time discharges internal heat. The moisture-proof box 8 can absorb moisture in the protective shell 3 to ensure that the power supply meter body 1 operates in a stable and good environment.

[0020] Example 2, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1. The protective shell 3 includes an outer shell 13 and an inner layer 14. The outer shell 13 is produced by high-strength aluminum alloy and is integrally formed by a mold. A buffer layer 15 is provided between the outer shell 13 and the inner layer 14. The buffer layer 15 is an elastic rubber buffer layer. The buffer layer 15 is adhered to the inner side of the outer shell 13 and the outer side of the inner layer 14 by strong glue. The inner layer 14 and the outer shell 13 are fixedly connected by a plurality of screws.

[0021] In this embodiment, the outer shell 13, the inner layer 14 and the buffer layer 15 are used in combination to provide it with good strength and toughness, and can effectively resist external collision and extrusion. When subjected to external force impact, the buffer layer 15 can absorb and disperse the impact force, further protecting the power supply meter body 1. At the same time, the inner layer 14 and the outer shell 13 are fixedly connected by multiple screws to ensure the stability of the connection.

[0022] Example 3, as Figure 2As shown, this embodiment adds the following structure on the basis of embodiment 1. The heat dissipation component 4 includes a heat dissipation fan 16 and a plurality of heat sinks 17. The heat sink 17 is made of copper and is fixedly mounted on the power supply meter body 1 by welding. A bracket is installed on the outside of the heat dissipation fan 16, and the heat dissipation fan 16 is fixedly mounted in the protective shell 3 through the bracket.

[0023] In this embodiment, the heat generated by the power supply meter body 1 can be quickly absorbed by the heat sink 17 , and the heat on the heat sink 17 can be quickly taken away by turning on the heat dissipation fan 16 , thereby improving the heat dissipation efficiency.

[0024] Example 4, as Figure 1 and Figure 2 As shown, this embodiment adds the following structure on the basis of embodiment 1, the dustproof component 5 includes an assembly frame 18 installed on the outside of the protective shell 3, a limiting assembly groove 19 is provided in the assembly frame 18, a dustproof mesh plate 20 is slidably installed in the limiting assembly groove 19, and a limiting pressure strip 21 is provided on the top of the dustproof mesh plate 20, and both sides of the limiting pressure strip 21 are installed in the limiting assembly groove 19.

[0025] In this embodiment, during use, the dustproof mesh plate 20 is used to block external dust from entering and discharge internal heat at the same time. When the dustproof mesh plate 20 needs to be cleaned, the limiting pressure strip 21 is taken out from the limiting assembly groove 19, and then the dustproof mesh plate 20 is pulled out from the limiting assembly groove 19 of the assembly frame 18 for cleaning or replacement. After cleaning or replacement is completed, it is reinserted into the limiting assembly groove 19, and the limiting pressure strip 21 is installed on the top of the limiting assembly groove 19 to press and fix the dustproof mesh plate 20.

[0026] Example 5, as Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1, the clamping assembly 6 includes a telescopic column 22 evenly arranged on the inner side wall of the protective shell 3, the telescopic column 22 is connected to a splint 23, and a flexible pad 24 is installed on the clamping surface of the splint 23. The outer side of the telescopic column 22 is provided with a spring 25, one side of the spring 25 is installed on the inner side wall of the protective shell 3, and the other side of the spring 25 is installed on the splint 23.

[0027] In this embodiment, during use, when the power supply meter body 1 is slidably installed into the protective shell 3 through the support sliding assembly 7, the two sides of the power supply meter body 1 will stretch out the clamping plates 23 on both sides, so that the clamping plates 23 push the telescopic column 22 and the spring 25 into a compressed state, and the rebound force generated by the spring 25 after compression acts on the clamping plates 23, thereby causing the clamping plates 23 to push the flexible pads 24 to clamp on both sides of the power supply meter body 1, thereby clamping and fixing the power supply meter body 1.

[0028] Example 6, as Figure 2and Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1, the supporting sliding component 7 includes an assembly seat 26 installed in the protective shell 3, a plurality of supporting springs 27 are installed in the assembly seat 26, the free ends of the plurality of supporting springs 27 are connected to the support seat 28, the bottom of the support seat 28 is slidably set in the assembly seat 26, a roller seat 29 is installed on the top of the support seat 28, and a plurality of rotating rollers 30 are installed on the top of the roller seat 29.

[0029] In this embodiment, when installing the power supply meter body 1, the bottom of the power supply meter body 1 is guided and slid along the rotating roller 30 on the roller seat 29. At the same time, the support spring 27 in the assembly seat 26 will push the support seat 28, the support seat 28 pushes the roller seat 29, and the roller seat 29 pushes the rotating roller 30. During the guided sliding process, the rotating roller 30 will synchronously push the power supply meter body 1 upward, so that the top of the power supply meter body 1 contacts the bottom surface of the moisture-proof box 8, thereby achieving the upper and lower fixation of the power supply meter body 1.

[0030] Example 7, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1: the moisture-proof box 8 is provided with an opening 31 on the side close to the cover plate 11, a pull-out box 32 is slidably installed in the opening 31, the moisture-proof agent is placed on the pull-out box 32, and an auxiliary roller seat 33 is installed at the bottom of the moisture-proof box 8, and a number of auxiliary rotating rollers 34 are evenly installed at the bottom of the auxiliary roller seat 33.

[0031] In this embodiment, before use, the pull-out box 32 in the opening 31 of the moisture-proof box 8 is pulled out, and the moisture-proof agent is placed on the pull-out box 32, and then the moisture-proof box 8 is pushed back in. When the power supply meter body 1 slides into the protective shell 3 through the bottom support sliding assembly 7, the support sliding assembly 7 lifts the power supply meter body 1 so that the top of the power supply meter body 1 cooperates with the auxiliary rotating roller 34 of the auxiliary roller seat 33, so that the power supply meter body 1 can be guided and slidably installed through the rotating roller, thereby improving assembly efficiency and having a moisture-proof effect after assembly.

[0032] Example 8, as Figure 2 、 Figure 3 and Figure 4 As shown, this embodiment adds the following structure on the basis of Example 1: a slide groove 35 with a T-shaped cross section is provided on the top of the assembly frame 10, a pulley 36 is slidably installed in the slide groove 35, a connecting block 37 is installed between the pulleys 36 on both sides, and the connecting block 37 is fixedly installed on the cover plate 11, a locking bar 38 is rotatably installed on the outer side of the assembly frame 10, and a locking bolt 39 is installed at the bottom of the locking bar 38. An air avoidance hole 40 is provided on the lower side of the assembly frame 10 corresponding to the locking bolt 39, and a threaded hole 41 is provided on the cover plate 11 corresponding to the locking bolt 39, and one side of the locking bolt 39 is locked in the threaded hole 41.

[0033] In this embodiment, when snapping together for installation, the cover plate 11 is pulled so that the cover plate 11 drives the connecting block 37, and the connecting block 37 drives the pulleys 36 on both sides to slide to the outside along the slide groove 35 of the assembly frame 10, and the cover plate 11 is rotated so that the cover plate 11 can be snapped together on the outside of the protective shell 3, and then the locking bolt 39 on the locking bar 38 is passed through the air avoidance hole 40 and inserted into the threaded hole 41 on the cover plate 11, and locked, so that the cover plate 11 is installed and fixed after snapping together.

[0034] Example 9, as Figure 2 and Figure 5 As shown, this embodiment adds the following structure on the basis of embodiment 1: a circular pressing cover 42 is installed on the outside of the transparent plate 12 inside the cover plate 11, and the outer dimensions of the circular pressing cover 42 match the inner dimensions of the protective shell 3. The cover plate 11 is provided with a sealing groove 43 on the outside of the circular pressing cover 42, and a sealing strip 44 is installed in the sealing groove 43. The sealing strip 44 is connected to a pressure strip 45, and the pressure strip 45 is installed on the protective shell 3. A handle 46 is installed on the outer lower side of the cover plate 11.

[0035] In this embodiment, when the cover 11 is buckled, the return-shaped press cover 42 on the inside of the cover 11 is inserted into the protective shell 3. While the return-shaped press cover 42 presses the surface of the power supply meter body 1, the outer wall of the return-shaped press cover 42 is fitted with the inner wall of the protective shell 3 for sealing. At the same time, after the cover 11 is buckled, the pressure strip 45 on the protective shell 3 is inserted into the sealing groove 43 of the cover 11 and presses the sealing strip 44 to further improve the sealing effect and prevent dust and impurities from entering from the gap between the cover 11 and the protective shell 3. By providing a handle 46, the cover 11 can be easily driven to slide.

[0036] Example 10: This example adds the following structure on the basis of Example 1: an electromagnetic shielding net is further installed on the outer surface of the power supply meter body 1, and the electromagnetic shielding net is a silver-plated copper net.

[0037] In this embodiment, an electromagnetic shielding net is installed on the outer surface of the power supply meter body 1 , so that external electromagnetic interference can be effectively shielded by the electromagnetic shielding net, thereby ensuring the accuracy of the use of the power supply meter body 1 .

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A power supply meter with a protective structure, characterized in that: The invention comprises a power supply meter body (1), wherein a protective mechanism (2) is installed on the outside of the power supply meter body (1), wherein the protective mechanism (2) comprises a protective shell (3), wherein a heat dissipation component (4) is installed in the protective shell (3), wherein a dustproof component (5) is installed on the outside of the heat dissipation component (4), wherein clamping components (6) are installed on the left and right sides of the protective shell (3), wherein the power supply meter body (1) is arranged between the clamping components (6) on the left and right sides, wherein the protective shell (3) is installed with supporting sliding components (7) on both sides of the bottom of the power supply meter body (1), wherein the protective shell (3) is installed with a moisture-proof box (8) on the top of the power supply meter body (1), wherein a plurality of through holes (9) are provided on both sides of the moisture-proof box (8), wherein the moisture-proof box (8) is filled with a moisture-proof agent, wherein assembly frames (10) are installed on both sides of the protective shell (3), wherein a cover plate (11) is slidably installed between the assembly frames (10) on both sides, wherein the cover plate (11) is installed with a transparent plate (12) at the position corresponding to the power supply meter body (1).

2. The power supply meter with a protective structure according to claim 1, characterized in that: The protective shell (3) includes an outer shell (13) and an inner layer (14). The outer shell (13) is made of high-strength aluminum alloy and is integrally formed by a mold. A buffer layer (15) is provided between the outer shell (13) and the inner layer (14). The buffer layer (15) is an elastic rubber buffer layer. The buffer layer (15) is adhered to the inner side of the outer shell (13) and the outer side of the inner layer (14) by strong glue. The inner layer (14) and the outer shell (13) are fixedly connected by a plurality of screws.

3. The power supply meter with a protective structure according to claim 2, characterized in that: The heat dissipation assembly (4) includes a heat dissipation fan (16) and a plurality of heat dissipation fins (17). The heat dissipation fins (17) are made of copper and are fixedly mounted on the power supply meter body (1) by welding. A bracket is mounted on the outside of the heat dissipation fan (16). The heat dissipation fan (16) is fixedly mounted in the protective shell (3) through the bracket.

4. The power supply meter with a protective structure according to claim 3, characterized in that: The dustproof component (5) includes an assembly frame (18) installed on the outside of the protective shell (3), a limiting assembly groove (19) is provided in the assembly frame (18), a dustproof screen (20) is slidably installed in the limiting assembly groove (19), a limiting pressure strip (21) is provided on the top of the dustproof screen (20), and two sides of the limiting pressure strip (21) are installed in the limiting assembly groove (19).

5. The power supply meter with a protective structure according to claim 4, characterized in that: The clamping assembly (6) includes a telescopic column (22) evenly arranged on the inner side wall of the protective shell (3), the telescopic column (22) is connected to a clamping plate (23), a flexible pad (24) is installed on the clamping surface of the clamping plate (23), and a spring (25) is sleeved on the outer side of the telescopic column (22), one side of the spring (25) is installed on the inner side wall of the protective shell (3), and the other side of the spring (25) is installed on the clamping plate (23).

6. The power supply meter with a protective structure according to claim 5, characterized in that: The supporting sliding assembly (7) includes an assembly seat (26) installed in the protective shell (3), a plurality of supporting springs (27) are installed in the assembly seat (26), the free ends of the plurality of supporting springs (27) are connected to a supporting seat (28), the bottom of the supporting seat (28) is slidably arranged in the assembly seat (26), a roller seat (29) is installed on the top of the supporting seat (28), and a plurality of rotating rollers (30) are installed on the top of the roller seat (29).

7. The power supply meter with a protective structure according to claim 6, characterized in that: The moisture-proof box (8) is provided with an opening (31) on a side close to the cover plate (11), a pull-out box (32) is slidably installed in the opening (31), the moisture-proof agent is placed on the pull-out box (32), an auxiliary roller seat (33) is installed at the bottom of the moisture-proof box (8), and a plurality of auxiliary rotating rollers (34) are evenly installed at the bottom of the auxiliary roller seat (33).

8. The power supply meter with a protective structure according to claim 7, characterized in that: The top of the assembly frame (10) is provided with a slide groove (35) with a T-shaped cross section, a pulley (36) is slidably installed in the slide groove (35), a connecting block (37) is installed between the pulleys (36) on both sides, and the connecting block (37) is fixedly installed on the cover plate (11), a locking bar (38) is rotatably installed on the outer side of the assembly frame (10), a locking bolt (39) is installed at the bottom of the locking bar (38), and an air avoidance hole (40) is provided on the lower side of the assembly frame (10) at a position corresponding to the locking bolt (39), and the cover plate (11) is provided with a threaded hole (41) at a position corresponding to the locking bolt (39), and one side of the locking bolt (39) is locked and installed in the threaded hole (41).

9. The power supply meter with a protective structure according to claim 8, characterized in that: A retractable pressing cover (42) is installed on the outside of the transparent plate (12) inside the cover plate (11), and the outer dimensions of the retractable pressing cover (42) match the inner dimensions of the protective shell (3). The cover plate (11) is provided with a sealing groove (43) on the outside of the retractable pressing cover (42), and a sealing strip (44) is installed in the sealing groove (43). The sealing strip (44) is connected to a pressure strip (45), and the pressure strip (45) is installed on the protective shell (3). A handle (46) is installed on the outer lower side of the cover plate (11).

10. The power supply meter with a protective structure according to claim 9, characterized in that: An electromagnetic shielding net is also installed on the outer surface of the power supply meter body (1), and the electromagnetic shielding net is a silver-plated copper net.

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