Rotary movable metering box of low-voltage cabinet

Abstract

The invention discloses a rotary movable metering box of a low-voltage cabinet, and relates to the technical field of electric energy metering devices of the low-voltage cabinet, the rotary movable metering box comprises a metering box mechanism used for installing an electric meter, the metering box mechanism is installed in a low-voltage cabinet body, the metering box mechanism comprises a metering box assembly installed in the low-voltage cabinet body, and the metering box assembly comprises a metering box part. The metering box component comprises a metering box body located in the low-voltage cabinet box body, first installation grooves are formed in the two side walls of the metering box body respectively, first installation holes are formed in the two side walls of the metering box body respectively, the first installation grooves and the corresponding first installation holes are communicated to form installation cavities, and a cooling unit and an ash filtering unit which are attached to each other are installed in the installation cavities. A wind gathering unit is arranged on the outer side wall of the dust filtering unit, a wind gathering cavity is formed between the wind gathering unit and the dust filtering unit, and the top of the metering box is fixedly connected with a guide plate. According to the invention, the problems of overall layout and management of the low-voltage cabinet and the metering box are solved, and the problems of heat dissipation and dust prevention of the metering box are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power metering devices for low-voltage switch cabinets, and particularly relates to a rotatable and movable metering box for a low-voltage switch cabinet. Background Art

[0002] Traditional metering boxes and low-voltage switch cabinets are usually installed independently at different positions, resulting in a scattered overall layout of the low-voltage switch cabinet and the metering box. This not only occupies more space but also is not conducive to the centralized management and monitoring of the power system. In some power distribution rooms with limited space, this layout method will lead to low space utilization efficiency, causing difficulties in the arrangement and management of equipment. When installing, maintaining, or overhauling the electric meter, the staff needs to operate back and forth between two separate devices, and the operating space is often very cramped. For example, when the electric meter needs to be replaced, due to space limitations, the tools cannot be fully utilized, increasing the operation difficulty, prolonging the power outage time, affecting the stability of power supply, bringing inconvenience to users, and increasing the power operation and maintenance costs.

[0003] The patent with the publication number CN202854190U discloses a rotatable and movable metering box for a low-voltage switch cabinet. However, its metering box lacks a heat dissipation design. During the operation of the electric meter, heat will be continuously generated. If this heat cannot be dissipated in time, it will accumulate inside the box, resulting in an increase in the box temperature. The excessive temperature will affect the performance of the electronic components inside the electric meter, thereby reducing the metering accuracy of the electric meter. Being in a high-temperature environment for a long time will also shorten the service life of the electric meter, increase the equipment replacement cost, and affect the accuracy and reliability of power metering.

[0004] In addition, the metering box of this patent lacks dust-proof measures and is difficult to effectively block dust from entering. Once the dust enters the metering box, it will adhere to the surface and internal components of the electric meter, possibly causing problems such as short circuits and poor contacts, affecting the normal operation of the electric meter, increasing the frequency of failures, and reducing the stability and safety of the power system operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a rotatable and movable metering box for a low-voltage switch cabinet, which not only solves the problems of the overall layout and management of the low-voltage switch cabinet and the metering box but also solves the problems of heat dissipation and dust prevention of the metering box.

[0006] The present invention solves the above technical problems through the following technical solutions: A low-voltage cabinet rotating and movable metering box, which includes a metering box mechanism for installing an electric meter. The metering box mechanism is installed inside the low-voltage cabinet box body. Among them, the metering box mechanism includes a metering box assembly installed inside the low-voltage cabinet box body. The metering box assembly includes a metering box component. The metering box component includes a metering box body located inside the low-voltage cabinet box body. First installation grooves are respectively provided in the two side walls of the metering box body, and first installation holes are respectively opened on the two side walls of the metering box body. The first installation groove and the corresponding first installation hole communicate to form an installation cavity. A cooling unit and a dust filtering unit that are mutually attached are installed in the installation cavity. A wind gathering unit is arranged on the outer side wall of the dust filtering unit, and a wind gathering cavity is formed between the wind gathering unit and the dust filtering unit. A guiding plate is fixedly connected to the top of the metering box body.

[0007] Preferably, the guiding plate is located above the top wall of the metering box body, and a plurality of heat dissipation kidney-shaped holes are opened on the top wall of the metering box body.

[0008] Preferably, the cooling unit includes a cooling plate inserted into the installation cavity. A plurality of cooling holes are opened on the cooling plate. The diameter of the port of the cooling hole close to the dust filtering unit gradually decreases towards the other port. A diversion groove is opened on the side of the dust filtering unit between adjacent cooling holes, and the inner side wall of the cooling plate is at the same horizontal plane as the inner side wall of the metering box body.

[0009] Preferably, the dust filtering unit includes a dust filtering plate inserted into the installation cavity and attached to the outer side wall of the cooling plate. Installation slots are opened on the outer side wall of the dust filtering plate, and the installation slots are used for installing the wind gathering unit subsequently.

[0010] Preferably, the wind gathering unit is composed of a wind gathering plate inserted into the installation slot of the dust filtering plate. A plurality of wind gathering holes are opened on the outer side wall of the wind gathering plate. A wind gathering pipe is fixedly connected inside the wind gathering hole, and the diameter of the outer end port of the wind gathering pipe gradually decreases towards the other port.

[0011] Preferably, the metering box assembly further includes a pair of rotating components, the metering box component is installed between the pair of rotating components, box bodies are respectively fixedly connected to the inner side walls of the two sides of the low-voltage cabinet box body, the two box bodies are symmetrically arranged, and the two box bodies are fixedly connected to the low-voltage cabinet box body through a connecting plate. An escape groove is formed in the longitudinal direction of the box body near one end of the cabinet door of the low-voltage cabinet box body, and a retaining wall adjacent to the corresponding escape groove in the transverse direction is provided at one end of the box body near the cabinet door of the low-voltage cabinet box body in the longitudinal direction. A plurality of positioning grooves are longitudinally and arrayedly distributed on the top and bottom walls inside the box body. Among them, a pair of symmetrical limiting grooves are also formed in the inner top and bottom walls at one end of the left box body near the cabinet door. L-shaped plates are fixedly connected to the inner top wall and the bottom at the opening of the inner side of the box body. A convex sliding cavity is formed between the pair of L-shaped plates. The convex sliding cavity and the inner cavity of the box body form a sliding groove. A first convex block and a corresponding rotating component are slidably connected in the sliding groove. The rotating component includes a rotating and movable component, the rotating and movable component is connected to the metering box body, and the first convex block is fixedly connected to the metering box body.

[0012] Preferably, the rotating and movable component includes a slider, the slider is slidably connected in the cavity of the box body. The outer end of the rotating and movable component is sequentially fixedly connected with a connecting rod and a cylinder. A fixed disc is fixedly connected to the middle position inside the cylinder. Springs and positioning balls are sequentially fixedly connected to both ends of the fixed disc. The positioning balls are adapted to be fitted in the positioning grooves. A universal ball groove is formed at the inner end of the slider. A universal ball is arranged in the universal ball groove. The universal ball is fixedly connected to a fixed block located inside the slider. The fixed block is fixedly connected to the metering box body and is matched with the corresponding convex sliding cavity to slide in the convex sliding cavity. Limiting rods are fixedly connected to both the top and bottom of the fixed block. The limiting rod consists of a bent rod fixed on the fixed block and a limiting ball at the other end of the bent rod. The limiting ball is located in a limiting circular groove formed at the inner end of the slider. The limiting groove is adapted to be in limiting cooperation with the corresponding positioning ball to limit the longitudinal movement of the positioning ball; the retaining wall is adapted to be in abutting cooperation with the corresponding cylinder; the rotating and movable component on the left is adapted to partially disengage from or enter the corresponding box body from the corresponding escape groove, and the rotating and movable component on the right is adapted to disengage from or enter the corresponding box body from the corresponding escape groove.

[0013] Preferably, the guiding plate is arranged in an inclined shape, and the height of the free end of the guiding plate from the top of the metering box body decreases sequentially towards the other end, and the end of the free end is in a flanging shape.

[0014] Preferably, an installation frame assembly is further installed in the metering box assembly. The installation frame assembly includes a pair of symmetrically arranged heat-conducting plates. An installation plate is fixedly connected between the two heat-conducting plates. Flow guide plates are fixedly connected to both ends of the heat-conducting plates and the installation plate. The flow guide plates are attached to the inner wall of the cooling plate. A pair of fixing plates are fixedly connected to the flow guide plates. The fixing plates are fixedly connected to the metering box body through bolts. A plurality of heat dissipation fins are fixedly connected inside the installation plate.

[0015] Preferably, a cooling chamber is formed between the heat conducting plate and the inner wall of the metering box. The mounting plate and the flow guiding plate are both convexly arranged. A pair of clamping slots are provided on the mounting plate. The flow guiding plate is curved and its two ends are attached to the inner wall of the metering box.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By integrating the metering box mechanism into the low-voltage cabinet body and realizing the rotation function through the cooperation of the rotating component and the metering box component, the present invention not only optimizes the space layout, reduces the space occupation, and improves the space utilization efficiency, but also, this integrated design facilitates the centralized management and monitoring of the power system. The staff can manage and maintain the equipment more conveniently. During the operation process, the staff can approach more easily, the operation is no longer restricted by space, the tools can be used freely, the operation time is greatly shortened, the work and management efficiency are improved, the power outage duration is reduced, and the power operation and maintenance cost is lowered.

[0017] By providing the metering box component and the mounting frame assembly, the present invention not only facilitates the installation of the electric meter, but also is conducive to the upward rise and guidance of the hot air to enhance the heat dissipation. It also improves the heat dissipation efficiency of the interior of the metering box and the electric meter through the cooperation of accelerating the air circulation and flow rate, guiding the uniform distribution of the air, and conducting heat, ensuring the stable operation of the electric meter, improving the metering accuracy, extending the service life, strengthening the dust prevention effect, blocking the entry of dust, making it difficult for dust to adhere to the interior of the metering box and the electric meter, keeping the operation environment of the electric meter clean, reducing the occurrence of faults, and ensuring the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 ; Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 ; Figure 3 is an enlarged schematic three-dimensional structure diagram of the cooperation of the metering box assembly and the mounting frame assembly; Figure 4 is Figure 3 the enlarged schematic three-dimensional structure diagram at A in Figure 5 is Figure 3 a partial schematic three-dimensional structure diagram in Figure 6 is Figure 5 a partially sectioned schematic three-dimensional structure diagram; Figure 7 is Figure 6 the enlarged schematic three-dimensional structure diagram at B in Figure 8 is a sectional schematic three-dimensional structure diagram of the rotating movable component; Figure 9 is a schematic three-dimensional structure diagram of the air gathering unit; Figure 10 Schematic diagram of the three-dimensional structure of the ash filtering unit; Figure 11 is Figure 10 Schematic diagram of the three-dimensional structure from the second perspective; Figure 12 Schematic diagram of the three-dimensional structure of the cooling unit; Figure 13 is Figure 12 Schematic diagram of the sectional three-dimensional structure from the second perspective; Figure 14 Schematic diagram of the three-dimensional structure of the mounting bracket assembly from the first perspective; Figure 15 is Figure 14 Schematic diagram of the three-dimensional structure from the second perspective; Figure 16 Schematic diagram of the enlarged three-dimensional structure of the cooperation of the metering box body, the first mounting hole and the first mounting groove; Figure 17 Schematic diagram of the enlarged three-dimensional structure of part of the rotating component.

[0019] The numbers in the figure indicate: 1, low-voltage cabinet body; 2, metering box mechanism; 3, metering box assembly; 4, rotating component; 41, box body; 42, disengaging groove; 43, positioning groove; 44, limiting groove; 45, L-shaped plate; 46, first convex block; 47, rotating and movable component; 471, slider; 472, connecting rod; 473, cylinder; 474, fixed disc; 475, spring; 476, positioning ball; 477, fixed block; 478, universal ball; 479, limiting rod; 48, connecting plate; 5, metering box component; 51, metering box body; 52, first mounting hole; 53, first mounting groove; 54, cooling unit; 541, cooling plate; 542, cooling hole; 543, diversion groove; 55, ash filtering unit; 551, ash filtering plate; 552, ash filtering hole; 56, air gathering unit; 561, air gathering plate; 562, air gathering hole; 563, air gathering pipe; 57, air gathering cavity; 58, heat dissipation kidney-shaped hole; 59, guiding plate; 6, mounting bracket assembly; 61, heat conducting plate; 62, mounting plate; 63, diversion plate; 64, fixing plate; 65, heat dissipation fin. Specific embodiments

[0020] The following further elaborates on the above and other technical features and advantages of the present invention in more detail with reference to the accompanying drawings.

[0021] Embodiment 1: This embodiment provides a technical solution: a rotating and movable metering box for a low-voltage cabinet, as Figures 1 - 17As shown, it includes a metering box mechanism 2 for installing an electricity meter (note: used in a natural environment), and the metering box mechanism 2 is installed in a low-voltage cabinet body 1 (the low-voltage cabinet body 1 is a prior art, and some parts of the low-voltage cabinet body 1 are not shown in the figure, such as a cooling fan). Among them, the metering box mechanism 2 includes a metering box assembly 3 installed in the low-voltage cabinet body 1, and the metering box assembly 3 includes a metering box part 5.

[0022] As Figures 3 to 6 , Figures 9 to 13 and Figure 16 shown, the metering box part 5 includes a metering box body 51 located inside the low-voltage cabinet body 1. First installation grooves 53 are respectively provided in the two side walls of the metering box body 51, and first installation holes 52 are respectively opened on the two side walls of the metering box body 51. The first installation grooves 53 and the corresponding first installation holes 52 communicate to form an installation cavity. In this installation cavity, a cooling unit 54 and a dust filtering unit 55 that are mutually attached are installed. A wind gathering unit 56 is arranged on the outer side wall of the dust filtering unit 55, and a wind gathering cavity 57 is formed between the wind gathering unit 56 and the dust filtering unit 55. A guiding plate 59 is fixedly connected to the top of the metering box body 51. The guiding plate 59 is located above the top wall of the metering box body 51, and a plurality of heat dissipation waist-shaped holes 58 are opened on the top wall of the metering box body 51.

[0023] The metering box body 51, as the core load-bearing component, its installation cavity provides an installation space for the cooling unit 54 and the dust filtering unit 55. The cooling unit 54 and the dust filtering unit 55 are mutually attached. The cooling unit 54 is responsible for reducing the temperature inside, and the dust filtering unit 55 blocks dust on the outside. The two work together to create a suitable operating environment for the electricity meter. The wind gathering unit 56 cooperates with the dust filtering unit 55. The wind gathering unit 56 converges the outside air into the wind gathering cavity 57 through the wind gathering effect, accelerating the air flow. On the one hand, it helps the dust filtering unit 55 better filter dust, and on the other hand, it enhances the heat dissipation effect of the cooling unit 54 and increases the heat dissipation area. The guiding plate 59 is fixedly connected to the top of the metering box body 51. The heat generated by the electricity meter is conducted to the guiding plate 59 through the heat dissipation waist-shaped holes 58, so that the heat can be guided and dissipated to the outside more quickly, further improving the heat dissipation performance.

[0024] The cooling unit 54 is mainly composed of a cooling plate 541 inserted into the installation cavity. A plurality of cooling holes 542 are opened on the cooling plate 541. The diameters of the ports of these cooling holes 542 on the side close to the dust filtering unit 55 gradually decrease towards the other port. Flow guiding grooves 543 are opened between adjacent cooling holes 542 on the side of the dust filtering unit 55, and the inner side wall of the cooling plate 541 is on the same horizontal plane as the inner side wall of the metering box body 51.

[0025] The cooling plate 541 is inserted into the installation cavity and closely cooperates with the dust filtering unit 55 to ensure the stability of the installation. The special aperture design of the cooling holes 542 enables the air to flow faster when passing through the cooling holes 542, forming a high-speed air flow that can more effectively take away heat. The diversion groove 543 guides the air to flow on the surface of the cooling plate 541, enabling the air to contact the cooling plate 541 more evenly and improving the heat dissipation efficiency. The inner side wall of the cooling plate 541 is at the same horizontal plane as the inner side wall of the metering box body 51, ensuring the flatness of the internal space of the metering box body 51, avoiding the occurrence of air flow dead angles, being beneficial to the overall circulation of air in the box body, and enhancing the heat dissipation effect.

[0026] The dust filtering unit 55 includes a dust filtering plate 551 inserted into the installation cavity and attached to the outer side wall of the cooling plate 541. The outer side wall of the dust filtering plate 551 is provided with installation slots for subsequent installation of the air gathering unit 56.

[0027] The dust filtering plate 551 is inserted into the installation cavity and attached to the cooling plate 541. This close attachment method enables the dust filtering unit 55 to effectively block dust from entering the cooling unit 54 and the inside of the metering box body 51, protecting the electric meter from dust damage. The installation slots on the outer side wall of the dust filtering plate 551 provide a precise installation position for the air gathering unit 56, ensuring the close cooperation between the air gathering unit 56 and the dust filtering unit 55, and enabling the air flow generated by the air gathering unit 56 to smoothly pass through the dust filtering plate 551, realizing better dust prevention and auxiliary heat dissipation functions.

[0028] The air gathering unit 56 is composed of an air gathering plate 561 inserted into the installation slot of the dust filtering plate 551. The outer side wall of the air gathering plate 561 is provided with a plurality of air gathering holes 562. A wind gathering pipe 563 is fixedly connected inside the air gathering holes 562, and the diameter of the outer end port of the wind gathering pipe 563 gradually decreases towards the other port.

[0029] The air gathering plate 561 is inserted into the installation slot of the dust filtering plate 551, realizing the close connection between the two. The combined design of the air gathering holes 562 and the wind gathering pipes 563 enables the outside air, when passing through the wind gathering pipes 563, to have an accelerated air flow rate due to the gradually decreasing pipe diameter, forming a high-speed air gathering flow into the air gathering cavity 57. These high-speed air flows can enhance the air flow on the surface of the dust filtering unit 55, help the dust filtering plate 551 better adsorb and block dust, and at the same time accelerate the air circulation around the cooling unit 54, improving the heat dissipation effect.

[0030] Embodiment 2: This embodiment further has the following structure on the basis of Embodiment 1: The guiding plate 59 is arranged in an inclined shape, and the height of the free end of the guiding plate 59 from the top of the metering box body 51 gradually decreases towards the other end, and the end of this free end is in a flanged shape.

[0031] The inclined guide plate 59 is fixedly connected to the top of the metering box body 51. Using the principle of hot air rising, it is more conducive to the heat flowing upward along the inclined surface under the action of natural convection, accelerating heat dissipation. The flanging design at the end not only increases the structural strength of the guide plate 59, preventing it from deforming during long-term use, but also can block the disordered dissipation of heat at the edge, making the heat more concentratedly dissipated through the heat dissipation waist-shaped holes 58, improving the heat dissipation efficiency.

[0032] Embodiment 3: On the basis of Embodiment 1 or 2, this embodiment further has the following structure: As Figures 3 to 8 , Figure 17 shown, the metering box assembly 3 further includes a pair of rotating components 4. The metering box component 5 is installed between the pair of rotating components 4. Box bodies 41 are respectively fixedly connected to the two inner side walls of the low-voltage cabinet body 1. The two box bodies 41 are symmetrically arranged, and the two box bodies 41 are fixedly connected to the low-voltage cabinet body 1 through a connecting plate 48. The box body 41 is provided with a separation groove 42 at one end close to the cabinet door of the low-voltage cabinet body 1 in the longitudinal direction, and a retaining wall adjacent to the corresponding separation groove 42 in the transverse direction is provided at one end close to the cabinet door of the low-voltage cabinet body 1 in the longitudinal direction of the box body 41. A plurality of positioning grooves 43 are longitudinally and arrayedly distributed on the top and bottom walls inside the box body 41. Among them, a pair of symmetrical limiting grooves 44 are also opened on the inner top wall and bottom wall at one end close to the cabinet door of the left box body 41. L-shaped plates 45 are fixedly connected to the inner top wall and bottom at the opening of the inner side of the box body 41. A convex sliding cavity is formed between the pair of L-shaped plates 45. The convex sliding cavity and the inner cavity of the box body 41 form a sliding groove. A first convex block 46 and the corresponding rotating component 4 are slidably connected in the sliding groove. The rotating component 4 includes a rotating and movable component 47. The rotating and movable component 47 is connected to the metering box body 51. The first convex block 46 is fixedly connected to the metering box body 51.

[0033] A pair of boxes 41 are fixedly connected to the inner wall of the low-voltage cabinet box body 1 through a connecting plate 48, providing a stable support structure for the rotating member 4. The setting of the disengaging groove 42 is to facilitate the movement of the left rotating movable member 47 to the corresponding disengaging groove 42. When the left rotating movable member 47 moves to the corresponding disengaging groove 42, the left rotating movable member 47 can partially disengage from its disengaging groove 42. When the right rotating movable member 47 moves to the corresponding disengaging groove 42, since there is no limiting groove 44, it can disengage from the corresponding disengaging groove 42 and further disengage from the box 41. The positioning groove 43 cooperates with the positioning ball 476 in the rotating movable member 47 to play a positioning role during the movement, ensuring that the metering box member 5 can accurately stop at a specific position every time it moves. Specifically, the aperture of the limiting groove 44 is larger than that of the positioning groove 43. The function of the limiting groove 44 is to cooperate with the relevant structure in the rotating movable member 47, restricting the excessive movement of the rotating movable member 47 and at the same time restricting its rotation angle range to prevent it from falling off due to excessive movement and rotation. The convex sliding cavity formed by the L-shaped plate 45 and the sliding groove formed by the inner cavity of the box 41 provide a sliding track for the first convex block 46 and the rotating movable member 47, enabling them to slide smoothly in the groove, and then realizing the smooth rotation of the metering box body 51. The connection between the first convex block 46 and the rotating movable member 47 and the metering box body 51 ensures that the metering box body 51 can rotate synchronously with the rotating member 4 during the rotation process.

[0034] The rotating movable member 47 includes a slider 471. The slider 471 is slidably connected in the cavity of the box 41. Its outer end is fixedly connected with a connecting rod 472 and a cylinder 473 in sequence. A fixed disc 474 is fixedly connected to the middle position inside the cylinder 473. Springs 475 and positioning balls 476 are fixedly connected to both ends of the fixed disc 474 in sequence. The positioning balls 476 are adapted to cooperate in the positioning groove 43. A universal ball groove is opened at the inner end of the slider 471. A universal ball 478 is arranged in the universal ball groove. A fixed block 477 located inside the slider 471 is fixedly connected to the universal ball 478. The fixed block 477 is fixedly connected to the metering box body 51 and is matched with the corresponding convex sliding cavity to slide in the convex sliding cavity. Limiting rods 479 are fixedly connected to both the top and bottom of the fixed block 477. The limiting rods 479 are composed of bent rods fixed on the fixed block 477 and limiting balls at the other ends of the bent rods. The limiting balls are located in the limiting circular grooves opened at the inner end of the slider 471.

[0035] In this embodiment, the limiting groove 44 is adapted to limit the longitudinal movement of the corresponding positioning ball 476 in a limiting manner; the retaining wall is adapted to abut and cooperate with the corresponding cylinder 473; the left rotating movable member 47 is adapted to partially disengage from or enter the corresponding disengaging groove 42, and the right rotating movable member 47 is adapted to disengage from or enter the corresponding disengaging groove 42.

[0036] The slider 471 slides within the cavity of the box body 41, providing the basic sliding support for the overall movement of the rotating movable part 47. The connecting rod 472 and the cylinder 473 transmit the movement of the slider 471 to the positioning ball 476, the spring 475, and the fixed disc 474 to ensure the stability of the structure. The spring 475 and the positioning ball 476 cooperate with the positioning groove 43. The spring 475 provides a certain elastic force so that the positioning ball 476 can closely fit the positioning groove 43, playing the role of precise positioning and buffering. The cooperation between the universal ball 478 and the fixed block 477 in the rotating movable part 47 on the left enables the metering box body 51 to flexibly adjust the angle according to the actual situation during rotation, avoiding stress concentration caused by rigid connection. The limiting rod 479 cooperates with the limiting circular groove at the inner end of the slider 471, restricting the sliding range of the fixed block 477, thereby preventing the slider 471 from sliding excessively and ensuring the movement safety and stability of the rotating movable part 47.

[0037] Specifically, during the cooperation between the metering box component 5 and the rotating component 4, the metering box body 51 is pulled out from the deep part of the low-voltage cabinet body 1 to the vicinity of the cabinet door at a uniform speed. At this time, the fixed block 477 of the rotating movable component 47 slides in the convex sliding cavity, and the fixed block 477 drives the slider 471 to move along the sliding groove of the box body 41 toward the cabinet door under the cooperation of the limiting rod 479 and the limiting circular groove. As the slider 471 moves, the connecting rod 472 drives the cylinder 473 to move. After the metering box body 51 is pulled to a position close to the front, the positioning ball 476 in the cylinder 473 compresses the spring 475 under the action of the tension, and gradually comes out of the positioning groove 43 on the inner wall of the box body 41, releasing the angle fixing state. Since the universal ball 478 allows a slight angle adjustment between the fixed block 477 and the slider 471, the metering box body 51 It can be swung slightly. During the pulling process, the first convex block 46 will first slide in the slide groove, and then disengage from the disengagement groove 42. With continuous pulling, the cylinder 473 will contact the end retaining wall of the box body 41. In addition to contacting the end retaining wall of the box body 41, the cylinder 473 on the left side will also move into the limiting groove 44. The spring 475 will rebound synchronously to make the positioning ball 476 go deep into the limiting groove 44. Accompanied by a "click" sound, the limiting groove 44 and the positioning ball 476 on the left side are mutually restricted. At the same time, the slider 471 The fixed block 477 will also disengage from the corresponding disengagement groove 42. After that, the rotating movable part 47 on the right is confirmed, and the metering box 51 connected thereto is pulled toward the operator. Since the cylinder 473 in the rotating movable part 47 on the right conflicts with the retaining wall at the end of the corresponding box body 41, continuous pulling will cause the universal ball 478 on the right to rotate in the universal ball groove, and the limiting ball rotates in the limiting circular groove, which will cause the slider 471 on the right to swing in the opposite direction, forming an angle with the fixed block 477. In this process, the slider 471, the connecting rod 472 and the cylinder 473 on the right will be displaced and disengaged from the disengagement groove 42, and the positioning ball 476 on the left will rotate in the limiting groove 44, and the metering box 51 will continue to be pulled. When rotating, the connecting rod 472 provided in the rotating movable part 47 on the left side will conflict with the corresponding retaining wall of the box body 41, so that the slider 471 provided therein will be limited, and the universal ball 478 on the left side will rotate in the universal ball groove, and the limiting ball will rotate in the limiting circular groove, and an angle will be formed between the slider 471 and the fixing block 477, which will further make the metering box body 51 move out from the inside of the low-voltage cabinet body 1 and form an angle, thereby realizing the rotation function of the metering box component and facilitating the maintenance of the components inside it. After the maintenance is completed, the metering box body 51 is pushed to rotate toward the inside of the low-voltage cabinet body 1, which will make the universal ball 478 in the rotating movable part 47 on the left side rotate in the universal ball groove, and the limiting ball will rotate in the limiting circular groove.When the rotating movable part 47 on the right side enters the box body 41 through the disengaging groove 42, it pushes the connection part between the sliding blocks 471 on both sides of the metering box body 51 and the fixed block 477, causing the universal ball 478 to rotate in the universal ball groove and the limiting ball to rotate in the limiting circular groove. After the angle between the sliding block 471 and the fixed block 477 is smoothed out, the pushing stops. Then, the cylinder 473 will return to its original position. Next, when pushing longitudinally backward, the positioning ball 476 on the left side will be moved out of the limiting groove 44, and further, the fixed block 477 will enter the convex sliding cavity, enabling the metering box body 51 to penetrate deep into the low-voltage cabinet body 1 and be pushed to an appropriate position. With the confirmation of a "click" sound, the positioning ball 476 enters the positioning groove 43, and the first convex block 46 also enters the sliding groove, making the metering box body 51 unable to move by itself inside the low-voltage cabinet body 1.

[0038] Embodiment 4: This embodiment further has the following structure on the basis of Embodiment 3: As Figure 3 、 Figure 5 、 Figure 14 and Figure 15 shown, an installation frame assembly 6 is further installed in the metering box assembly 3. The installation frame assembly 6 includes a pair of symmetrically arranged heat conduction plates 61. An installation plate 62 is fixedly connected between the two heat conduction plates 61. Heat conduction plates 61 and both ends of the installation plate 62 are fixedly connected with flow guide plates 63 in common. The flow guide plates 63 are attached to the inner wall of the cooling plate 541. A pair of fixing plates 64 are fixedly connected to the flow guide plates 63. The fixing plates 64 are fixedly connected to the metering box body 51 by bolts. A plurality of heat sinks 65 are fixedly connected inside the installation plate 62.

[0039] In this embodiment, the low-voltage cabinet body 1 provides an installation space and a protective shell for the entire metering box mechanism 2. The metering box assembly 3 serves as an intermediate connection part. On the one hand, it realizes a rotatable connection with the low-voltage cabinet body 1 through the rotating part 4. On the other hand, it bears the installation frame assembly 6, providing a stable installation foundation for the electric meter. The rotating part 4 and the metering box part 5 cooperate with each other. When the electric meter needs to be installed, maintained or repaired, the rotating part 4 can drive the metering box part 5 to rotate around a specific axis, turning the metering box part 5 originally located deep inside the low-voltage cabinet out, facilitating the operator's access and greatly improving the operation convenience. The installation frame assembly 6 is tightly installed in the metering box assembly 3, providing a stable installation position for the electric meter, ensuring that the electric meter will not shake or displace during operation and ensuring the accuracy of metering.

[0040] A pair of heat-conducting plates 61 and a mounting plate 62 form a stable frame structure, providing a mounting foundation for the heat sink 65. At the same time, the heat-conducting plate 61 can conduct the heat generated by the electricity meter. The heat sink 65 increases the heat dissipation area and improves the heat dissipation efficiency. The flow guide plate 63 is attached to the inner wall of the cooling plate 541, guiding the air to flow between the mounting frame assembly 6 and the cooling unit 54, enabling the air to better contact with the heat sink 65 and the cooling plate 541, and enhancing the heat dissipation effect. The fixing plate 64 is fixedly connected to the metering box body 51 by bolts, ensuring the firm connection between the mounting frame assembly 6 and the metering box body 51 and preventing looseness during use.

[0041] A cooling cavity is formed between the heat-conducting plate 61 and the inner wall of the metering box body 51. Both the mounting plate 62 and the flow guide plate 63 are convexly arranged. A pair of clamping grooves are provided on the mounting plate 62. The flow guide plate 63 is curved and its two ends are attached to the inner wall of the metering box body 51.

[0042] The cooling cavity formed by the heat-conducting plate 61 and the inner wall of the metering box body 51 increases the space for air circulation and further improves the heat dissipation capacity. The convex design of the mounting plate 62 and the flow guide plate 63 changes the air flow path, enabling the air to more fully contact with the heat sink 65 and the cooling plate 541 during the flow process, improving the heat dissipation efficiency. The clamping grooves on the mounting plate 62 are used to fix the electricity meter, ensuring the firm installation of the electricity meter and preventing it from shaking during operation. The two ends of the curved flow guide plate 63 are attached to the inner wall of the metering box body 51, optimizing the boundary conditions of air flow and enabling the air to circulate more smoothly in the metering box, enhancing the overall heat dissipation and flow guiding effects.

[0043] The above is only the preferred embodiment of the present invention, which is illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims

1. A low-voltage cabinet rotating movable metering box, characterized in that: It comprises a meter box mechanism for installing an electric meter, wherein the meter box mechanism is installed in a low-voltage cabinet box; wherein the meter box mechanism comprises a meter box assembly installed in the low-voltage cabinet box, the meter box assembly comprises a meter box component, the meter box component comprises a meter box located inside the low-voltage cabinet box, first mounting grooves are respectively arranged in the two side walls of the meter box, first mounting holes are respectively opened on the two side walls of the meter box, the first mounting grooves and the corresponding first mounting holes are connected to form an installation cavity, a cooling unit and an ash filter unit that fit each other are installed in the installation cavity, an air gathering unit is arranged on the outer side wall of the ash filter unit, an air gathering cavity is formed between the air gathering unit and the ash filter unit, and a guide plate is fixedly connected to the top of the meter box; The guide plate is located above the top wall of the metering box, and a plurality of heat dissipation waist-shaped holes are opened on the top wall of the metering box; The cooling unit comprises a cooling plate inserted into the installation cavity, a plurality of cooling holes are formed on the cooling plate, the diameter of the ports of the cooling holes close to the ash filter unit decreases gradually toward the other port, a guide groove is formed between adjacent cooling holes on one side of the ash filter unit, and the inner side wall of the cooling plate and the inner side wall of the metering box are in the same horizontal plane; The ash filter unit comprises an ash filter plate inserted into the installation cavity and attached to the outer wall of the cooling plate. The outer wall of the ash filter plate is provided with an installation slot, and the installation slot is used for the subsequent installation of the wind gathering unit. The wind gathering unit is composed of a wind gathering plate inserted into the installation slot of the ash filter plate. The outer wall of the wind gathering plate is provided with a plurality of wind gathering holes. The wind gathering holes are fixedly connected with a wind gathering pipe. The diameter of the outer end port of the wind gathering pipe decreases successively toward the other port.

2. The low-voltage cabinet rotary movable metering box according to claim 1 is characterized in that: The metering box assembly also includes a pair of rotating parts, and the metering box part is installed between the pair of rotating parts, and a box body is fixedly connected to the two inner side walls of the low-voltage cabinet box body, respectively, the two box bodies are symmetrically arranged, and the two box bodies are fixedly connected to the low-voltage cabinet box body through a connecting plate, and the box body is provided with a disengagement groove at one end close to the cabinet door of the low-voltage cabinet box body in the longitudinal direction, and the box body is provided with a retaining wall arranged adjacent to the corresponding disengagement groove in the transverse direction at one end close to the cabinet door of the low-voltage cabinet box body in the longitudinal direction, and the top and bottom walls inside the box body are provided with a plurality of positioning grooves distributed in a longitudinal array, wherein the inner top wall and bottom wall of the box body on the left side close to the cabinet door end are also provided with a pair of symmetrical limiting grooves, and an L-shaped plate is fixedly connected to the inner top wall and the bottom of the inner opening of the box body, and a convex sliding cavity is formed between the pair of L-shaped plates, and the convex sliding cavity and the inner cavity of the box body constitute a sliding groove, and a first convex block and a corresponding rotating part are slidably connected in the sliding groove, and the rotating part includes a rotating movable part, the rotating movable part is connected to the metering box body, and the first convex block is fixedly connected to the metering box body.

3. The low-voltage cabinet rotary movable metering box according to claim 2 is characterized in that: The rotating movable part comprises a slider, which is slidably connected in the cavity of the box body, and the outer end of the rotating movable part is fixedly connected with a connecting rod and a cylinder in sequence, and a fixed disc is fixedly connected at the middle position of the cylinder, and a spring and a positioning ball are fixedly connected at both ends of the fixed disc in sequence, and the positioning ball is suitable for fitting in the positioning groove, and a universal ball groove is provided at the inner end of the slider, and a universal ball is provided in the universal ball groove, and the universal ball is fixedly connected to a fixed block located on the inner side of the slider, and the fixed block is fixedly connected to the metering box body and matched with the corresponding convex sliding cavity to slide in the convex sliding cavity, and the top and bottom of the fixed block are fixedly connected to a limiting rod, and the limiting rod is composed of a bent rod fixed on the fixed block and a limiting ball at the other end of the bent rod, and the limiting ball is located in the limiting circular groove provided at the inner end of the slider; the limiting groove is suitable for limiting and matching with the corresponding positioning ball to limit the longitudinal movement of the positioning ball; the retaining wall is suitable for abutting and matching with the corresponding cylinder; the rotating movable part on the left side is suitable for partially detaching from the corresponding disengagement groove or entering the corresponding box body, and the rotating movable part on the right side is suitable for detaching from the corresponding disengagement groove or entering the corresponding box body.

4. The low-voltage cabinet rotating movable metering box according to claim 1 is characterized in that: A mounting frame assembly is also installed in the metering box assembly, and the mounting frame assembly includes a pair of symmetrically arranged heat conducting plates, a mounting plate is fixedly connected between the two heat conducting plates, guide plates are fixedly connected to both ends of the heat conducting plates and the mounting plates, the guide plates are fitted with the inner wall of the cooling plate, a pair of fixing plates are fixedly connected to the guide plates, the fixing plates are fixedly connected to the metering box body by bolts, and a plurality of heat sinks are fixedly connected in the mounting plate.

5. The low-voltage cabinet rotary movable metering box according to claim 4 is characterized in that: A cooling chamber is formed between the heat conduction plate and the inner wall of the metering box. The mounting plate and the guide plate are both convexly arranged. A pair of positioning grooves are arranged on the mounting plate. The guide plate is curved and its two ends are in contact with the inner wall of the metering box.

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