Fixed low-voltage metering cabinet

Abstract

The utility model provides a fixed low-voltage metering cabinet, which comprises a cabinet body and a mounting plate arranged in the cabinet body, an electric energy meter is fixedly arranged on the mounting plate, an opening is arranged on one transverse side of the cabinet body, a cabinet door is arranged on the outer side of the opening of the cabinet body, and a blocking rod for preventing the mounting plate from moving out of the opening is arranged at the bottom of the opening of the cabinet body. Two groups of symmetrical wedge-shaped guide blocks are arranged in the cabinet body, wedge-shaped surfaces of the two groups of wedge-shaped guide blocks are opposite and are obliquely arranged upwards, guide surfaces matched with the wedge-shaped surfaces are arranged at the lower end of the mounting plate, and the two groups of wedge-shaped guide blocks can move oppositely so that the wedge-shaped guide blocks can jack up the mounting plate until the height of the lower end of the mounting plate is higher than that of the stop rod. The utility model has the advantages of safety and convenience in disassembly and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of low - voltage metering cabinets, and in particular to a fixed - type low - voltage metering cabinet. Background Art

[0002] A low - voltage metering cabinet is a power metering device used in a low - voltage power system, mainly composed of a cabinet body, a mounting rack, wiring clips, a control module, a display window, warning lights, a control panel, a front door panel, a current relay protector, a metering transformer, an AC contactor, etc. The cabinet body of the low - voltage metering cabinet is usually set in a cuboid shape, and a mounting rack is arranged in the middle for installing and fixing various electrical components.

[0003] In the Chinese patent literature, the authorized announcement number CN 221150659 U was authorized and announced on June 14, 2024, for a low - voltage electric energy metering cabinet, which relates to the technical field of metering cabinets. It includes a cabinet body, and a first chute is opened at the inner bottom end of the cabinet body. An installation plate is slidably connected to the inner side of the first chute. The installation plate is slidably connected to the inner bottom end of the cabinet body through the first chute. The top of the installation plate is fixedly connected with an electric energy meter, and a groove is opened on the front side of the electric energy meter. Through the integrated setting of the installation plate and the electric energy meter, the installation plate can be slid and disassembled, which is convenient for the maintenance of the electric energy meter.

[0004] The deficiencies of the prior art are as follows: In order to facilitate disassembly and maintenance, the existing low - voltage metering cabinets have deficiencies in safety protection functions, which are prone to lead to illegal acts such as electricity theft. Summary of the Utility Model

[0005] In order to overcome the above - mentioned deficiencies in the prior art, the utility model provides a fixed - type low - voltage metering cabinet, which takes into account both safety and the convenience of disassembly, maintenance and repair.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fixed low-voltage metering cabinet includes a cabinet body and a mounting plate arranged inside the cabinet body. An electric energy meter is fixedly provided on the mounting plate. There is an opening on one lateral side of the cabinet body. A cabinet door is arranged outside the opening of the cabinet body. A blocking rod for preventing the mounting plate from moving out of the opening is arranged at the bottom of the opening of the cabinet body. Two groups of wedge-shaped guide blocks are symmetrically arranged inside the cabinet body. The wedge-shaped surfaces of the two groups of wedge-shaped guide blocks face each other and are inclined upward. A guiding surface for cooperating with the wedge-shaped surface is arranged at the lower end of the mounting plate. The two groups of wedge-shaped guide blocks can move towards each other so that the wedge-shaped guide blocks lift the mounting plate until the height of the lower end of the mounting plate is higher than the blocking rod. After the mounting plate is installed with the electric energy meter and placed inside the cabinet body, due to the blocking of the blocking rod, the mounting plate cannot be drawn out, thus preventing the electric energy meter from being easily taken out by people and stolen electricity. When maintenance is required, operate the two groups of wedge-shaped guide blocks to move relative to each other. Through the cooperation of the wedge-shaped surface and the guiding surface, the mounting plate is lifted so that the lower end of the mounting plate is higher than the blocking rod. After the lower end of the mounting plate is higher than the blocking rod, the maintenance personnel can slide out the mounting plate, facilitating the maintenance inside the low-voltage metering cabinet.

[0008] Preferably, an adjusting screw rod is rotatably arranged inside the cabinet body. An adjusting handle is arranged at one end of the adjusting screw rod. The adjusting screw rod is a double-headed screw rod. The two ends of the adjusting screw rod are respectively matched with the two groups of wedge-shaped guide blocks to make the two groups of wedge-shaped guide blocks move synchronously. By synchronously driving the two groups of wedge-shaped guide blocks through the adjusting screw rod, the synchronous lifting of both sides of the mounting plate is realized.

[0009] Preferably, the circuit connectors on the electric energy meter are arranged towards the wall surface of the cabinet body. When the mounting plate and the electric energy meter are not drawn out of the cabinet body, the circuit connectors are difficult to operate, effectively avoiding the occurrence of electricity theft.

[0010] Preferably, a number of lubricating balls are arranged on the wedge-shaped surfaces of the wedge-shaped guide blocks. It is convenient for the guiding cooperation between the wedge-shaped guide blocks and the mounting plate.

[0011] Preferably, before the two groups of wedge-shaped guide blocks move towards each other, the bottom surface of the mounting plate fits the bottom surface of the cabinet body. The bottom of the mounting plate can fit the bottom surface of the cabinet body, avoiding the middle part of the mounting plate from deforming downward due to being suspended for a long time.

[0012] Preferably, a convex block is arranged at the bottom of the cabinet body. A positioning groove for arranging the wedge-shaped guide blocks is arranged between the convex block and the side wall of the cabinet body. A through hole for the adjusting screw rod to pass through is arranged inside the convex block. The cabinet body cooperates with the convex block. The convex block can serve as the bottom surface of the cabinet body that fits the mounting plate, realizing the support of the middle part of the mounting plate. The positioning groove is used to accommodate the wedge-shaped guide blocks, cooperating with the convex block to avoid the adjusting screw rod interfering with the mounting plate.

[0013] Preferably, the adjusting handle and the adjusting screw rod are detachably arranged. The adjusting handle is a special tool for rotating the adjusting screw rod. After the adjusting handle is removed, it is difficult for outsiders to operate the adjusting screw rod, reducing the occurrence of electricity theft.

[0014] Preferably, guide rods parallel to the adjusting screw rod are provided on both sides of the adjusting screw rod. The guide rods penetrate through the wedge-shaped guide blocks and are slidably arranged with the wedge-shaped guide blocks. By guiding the wedge-shaped guide blocks with the guide rods, the stability of the sliding of the wedge-shaped guide blocks is ensured.

[0015] The beneficial effects of the above solution will be described in detail in combination with the accompanying drawings and the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a fixed low-voltage metering cabinet provided by one embodiment of the present invention;

[0017] Figure 2 is a schematic internal structural diagram of a fixed low-voltage metering cabinet provided by one embodiment of the present invention;

[0018] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0019] Figure 4 is a schematic structural diagram of a fixed low-voltage metering cabinet provided by another embodiment of the present invention;

[0020] Figure 5 is a schematic internal structural diagram of a fixed low-voltage metering cabinet provided by another embodiment of the present invention.

[0021] In the figure: cabinet body 1, mounting plate 2, opening 3, blocking rod 4, wedge-shaped guide block 5, wedge-shaped surface 6, guiding surface 7, adjusting screw rod 8, adjusting handle 9, convex block 10, positioning groove 11, guide rod 12, lubricating ball 13, convex strip 14. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As Figures 1 to 5 shown, a fixed low-voltage metering cabinet provided by one embodiment of the present invention includes a cabinet body 1 and a mounting plate 2 arranged in the cabinet body 1. An electric energy meter is fixedly arranged on the mounting plate 2. An opening 3 is provided on one lateral side of the cabinet body 1, and a cabinet door is provided outside the opening 3 of the cabinet body 1, where the electric energy meter and the cabinet door are not shown in the figure. A blocking rod 4 for preventing the mounting plate 2 from moving out of the opening 3 is provided at the bottom of the opening 3 of the cabinet body 1. Two groups of symmetric wedge-shaped guide blocks 5 are arranged in the cabinet body 1. The wedge-shaped surfaces 6 of the two groups of wedge-shaped guide blocks 5 face each other and are inclined upward. A guiding surface 7 for cooperating with the wedge-shaped surface 6 is provided at the lower end of the mounting plate 2. The two groups of wedge-shaped guide blocks 5 can move towards each other so that the wedge-shaped guide blocks 5 jack up the mounting plate 2 until the height of the lower end of the mounting plate 2 is higher than that of the blocking rod 4.

[0023] After the power meter is installed on the mounting plate 2 and placed into the cabinet body 1, due to the blocking of the blocking rod 4, the mounting plate 2 cannot be drawn out, thus preventing the power meter from being easily taken out by people and stolen. When maintenance is needed, operate the two groups of wedge-shaped guide blocks 5 to move relatively. Through the cooperation of the wedge-shaped surface 6 and the guiding surface 7, the mounting plate 2 is lifted, making the lower end of the mounting plate 2 higher than the blocking rod 4. After the lower end of the mounting plate 2 is higher than the blocking rod 4, the maintenance personnel can slide out the mounting plate 2, facilitating the overhaul inside the low-voltage metering cabinet. Further, the circuit connectors on the power meter in this solution are arranged facing the wall surface of the cabinet body 1. When the mounting plate 2 and the power meter are not removed from the cabinet body 1, the circuit connectors are difficult to operate, effectively preventing electricity theft.

[0024] As an implementation form of the sliding drive of the wedge-shaped guide block 5 in the above solution, as Figure 2 and Figure 3 shown, an adjusting screw rod 8 is rotatably arranged inside the cabinet body 1. One end of the adjusting screw rod 8 is provided with an adjusting handle 9, and the adjusting handle 9 is detachably arranged with the adjusting screw rod 8. The adjusting handle 9 is a special tool for rotating the adjusting screw rod 8. After the adjusting handle 9 is removed, it is difficult for outsiders to operate the adjusting screw rod 8, reducing the occurrence of electricity theft. The detachable connection between the adjusting handle 9 and the adjusting screw rod 8 includes but is not limited to plug-in connection and bolt connection, etc. The adjusting screw rod 8 is a double-headed screw rod, and both ends of the adjusting screw rod 8 are respectively matched with the two groups of wedge-shaped guide blocks 5 to make the two groups of wedge-shaped guide blocks 5 move synchronously. By synchronously driving the two groups of wedge-shaped guide blocks 5 through the adjusting screw rod 8, the synchronous lifting of both sides of the mounting plate 2 is realized. In order to improve the stability of the cooperation between the wedge-shaped guide block 5 and the adjusting screw rod 8, the opposite sides of the two groups of wedge-shaped guide blocks 5 are convexly arranged, thereby expanding the cooperation size between the wedge-shaped guide block 5 and the adjusting screw rod 8.

[0025] A convex block 10 is provided at the bottom of the cabinet body 1. As Figure 5 shown, the convex block 10 is vertically arranged at the middle position of the bottom of the cabinet body 1. A positioning groove 11 for arranging the wedge-shaped guide block 5 is provided between the convex block 10 and the side wall of the cabinet body 1. A through hole for the adjusting screw rod 8 to pass through is provided inside the convex block 10, and the cabinet body 1 is matched with the convex block 10. The bottom surface of the mounting plate 2 is attached to the bottom surface of the cabinet body 1 before the two groups of wedge-shaped guide blocks 5 move towards each other. This avoids the middle part of the mounting plate 2 from deforming downward due to being suspended for a long time. In this embodiment, the convex block 10 can serve as the bottom surface of the cabinet body 1 that fits with the mounting plate 2 to support the middle part of the mounting plate 2, and the positioning groove 11 is used to accommodate the wedge-shaped guide block 5, cooperating with the convex block 10 to prevent the adjusting screw rod 8 from interfering with the mounting plate 2.

[0026] Further, in order to ensure the reliability of the sliding of the wedge-shaped guide block 5, guide rods 12 parallel to the adjusting screw rod 8 are provided on both sides of the adjusting screw rod 8. The guide rods 12 penetrate through the wedge-shaped guide block 5 and are slidably arranged with the wedge-shaped guide block 5. By guiding the wedge-shaped guide block 5 through the guide rods 12, the stability of the sliding of the wedge-shaped guide block 5 is ensured.

[0027] As a simple replacement for the above solution, the adjusting screw rod 8 is driven to rotate by a motor.

[0028] Such as Figure 4 A fixed low-voltage metering cabinet proposed by another embodiment of the present utility model as shown, different from the Figure 1 embodiment shown in that: a plurality of lubricating balls 13 are provided on the wedge surface 6 of the wedge-shaped guide block 5. It is convenient for the guiding fit between the wedge-shaped guide block 5 and the mounting plate 2. Further, in this solution, lubricating balls 13 are also provided at the bottom of the positioning groove 11 to reduce the friction of the lower side of the wedge-shaped guide block 5 during sliding.

[0029] As a simple replacement for the above solution, the lubricating balls 13 are replaced with graphite dust, lubricating oil or a convex hemispherical surface to reduce the frictional force received by the sliding of the wedge-shaped guide block 5.

[0030] On the upper side of one end of the mounting plate 2 close to the opening 3, a convex strip 14 for pushing and pulling is provided. When the two sets of wedge-shaped guide blocks 5 lift the mounting plate 2 until the height of the lower end of the mounting plate 2 is higher than the upper end of the blocking rod 4, the maintenance personnel can push the mounting plate 2 through the convex strip 14, so as to move the mounting plate 2 and the electric energy meter thereon out of the cabinet body 1. As an optimized method, the cabinet door of the present application is arranged in a manner that the lower end is rotatably connected to the cabinet body 1 and the upper end of the cabinet door is detachably connected to the cabinet body 1. The detachable connection between the upper end of the cabinet door and the cabinet body 1 includes but is not limited to locking devices, bolts and other methods. A chain is provided between the cabinet door and the cabinet body 1 to prevent disconnection. When the upper end of the cabinet door is unlocked and the lower end is flipped until the cabinet door is in a horizontal state, the chain is tightened, so that the cabinet door can be used as a support when the mounting plate 2 slides out of the cabinet body 1 and as a workbench, and it is also convenient to put back the electric energy meter on the mounting plate 2 after maintenance. The convex block 10 correspondingly has a positioning and locking effect on the wedge-shaped guide block 5 on the side surface of the groove wall of the positioning groove 11. When the wedge-shaped guide block 5 moves to fit with the convex block 10, the height of the lower end of the mounting plate 2 is just slightly greater than the height of the upper end of the blocking rod 4.

Claims

1. Fixed low-voltage metering cabinet, characterized by: It includes a cabinet body and a mounting plate arranged in the cabinet body, an electric energy meter is fixedly arranged on the mounting plate, an opening is arranged on a lateral side of the cabinet body, a cabinet door is arranged outside the opening of the cabinet body, a blocking rod is arranged at the bottom of the opening of the cabinet body to prevent the mounting plate from moving out of the opening, two symmetrical groups of wedge-shaped guide blocks are arranged in the cabinet body, the wedge-shaped surfaces of the two groups of wedge-shaped guide blocks are opposite and inclined upward, the lower end of the mounting plate is provided with a guide surface matching the wedge-shaped surface, and the two groups of wedge-shaped guide blocks can move toward each other so that the wedge-shaped guide blocks lift the mounting plate until the height of the lower end of the mounting plate is higher than the blocking rod.

2. The fixed low-voltage metering cabinet according to claim 1 is characterized in that: An adjusting screw rod is rotatably arranged in the cabinet body, one end of which is provided with an adjusting handle. The adjusting screw rod is a double-headed screw rod, and both ends of the adjusting screw rod are respectively matched with two groups of wedge-shaped guide blocks so that the two groups of wedge-shaped guide blocks move synchronously.

3. The fixed low-voltage metering cabinet according to claim 1 is characterized in that: The circuit connector on the electric energy meter is arranged toward the wall of the cabinet.

4. The fixed low-voltage metering cabinet according to claim 1 is characterized in that: A plurality of lubricating balls are arranged on the wedge-shaped surface of the wedge-shaped guide block.

5. The fixed low-voltage metering cabinet according to any one of claims 1 to 4, characterized in that: Before the two groups of wedge-shaped guide blocks move toward each other, the bottom surface of the mounting plate is in contact with the bottom surface of the cabinet.

6. The fixed low-voltage metering cabinet according to claim 5 is characterized in that: The bottom of the cabinet is provided with a convex block, a positioning groove for arranging a wedge-shaped guide block is provided between the convex block and the cabinet side wall, a through hole for the adjusting screw rod to pass through is provided in the convex block, and the cabinet matches the convex block.

7. The fixed low-voltage metering cabinet according to claim 2 is characterized in that: The adjusting handle and the adjusting screw rod are detachably arranged.

8. The fixed low-voltage metering cabinet according to claim 2 is characterized in that: Guide rods parallel to the adjusting screw rod are arranged on both sides of the adjusting screw rod, and the guide rods penetrate the wedge-shaped guide block and are slidably arranged with the wedge-shaped guide block.

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