Primary and secondary fusion complete ring main unit

Abstract

The invention discloses a primary and secondary fusion complete ring main unit, and relates to the technical field of ring main units, the primary and secondary fusion complete ring main unit comprises a box body, the box body is provided with a mounting cavity, and the box body is provided with a primary and secondary equipment module located in the mounting cavity; the box body is provided with a containing cavity located below the mounting cavity, the box body is provided with a transmission opening communicating with the containing cavity and the mounting cavity, and the bottom of the box body is provided with a heat dissipation opening communicating with the containing cavity; the heat dissipation fan is mounted in the mounting cavity, and the heat dissipation fan blows air towards the conveying opening; exhaust ports are respectively formed in the opposite side walls of the box body; the winding shafts are rotationally connected into the box body, the winding shafts comprise the first winding shaft and the second winding shaft, and the first winding shaft and the second winding shaft are opposite to the upper portion of the exhaust port; and the filter cloth is slidably arranged in the box body in a penetrating mode, the filter cloth blocks the conveying opening and the opposite exhaust opening, and the two ends of the filter cloth are connected to the first winding shaft and the second winding shaft correspondingly. Water vapor, dust and the like entering the ring main unit can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of ring network boxes, and in particular to a primary and secondary integrated ring network box. Background Technology

[0002] Integrated primary and secondary ring main units (RMUs) play a crucial role in power distribution systems. With the continuous development of the power industry, the demands for integration and intelligence in power distribution equipment are increasing. Integrated RMUs deeply integrate primary and secondary equipment, achieving the integration of multiple functions such as power distribution, protection, control, measurement, and communication. This plays a key role in improving the operational efficiency, reliability, and intelligence level of power systems. It can better adapt to the complex needs of modern power networks, providing users with a more stable and efficient power supply, and has broad application prospects in urban power grids, industrial power consumption, and many other fields.

[0003] In the past, various methods were typically employed to address the heat dissipation problem of high-heat components inside ring main units. A common approach was to install ventilation openings on the side walls of the ring main unit, utilizing natural air convection to dissipate the heat generated by the internal components during operation. Additionally, some ring main units were equipped with simple cooling fans to accelerate airflow and enhance heat dissipation. Other ring main units underwent structural optimization, increasing heat dissipation channels to improve efficiency. These methods, to some extent, alleviated the heat dissipation problem of ring main units.

[0004] However, these existing heat dissipation methods have obvious drawbacks. Taking the installation of ventilation openings as an example, when cooling the inside of the ring main unit, dust, moisture, and other substances in the outside air can enter the unit through the ventilation openings. This can affect the normal operation of the components inside the ring main unit, potentially causing excessive temperature rise, accelerated insulation aging, or even malfunctions. Summary of the Invention

[0005] To reduce the entry of moisture, dust, and other pollutants into the ring main unit, this application provides a primary and secondary integrated ring main unit.

[0006] This application provides a primary and secondary integrated ring network box, which adopts the following technical solution: A primary and secondary integrated ring network box includes a box body, the box body having an installation cavity, and the box body being provided with a primary and secondary equipment module located within the installation cavity; The housing has a receiving cavity located below the mounting cavity, a transmission port connecting the receiving cavity and the mounting cavity, and a heat dissipation port connecting the bottom of the housing to the receiving cavity. A cooling fan is installed inside the mounting cavity, and the cooling fan blows air toward the transmission port; The opposite side walls of the box are respectively provided with exhaust ports; A winding shaft is rotatably connected to the housing. The winding shaft includes a first winding shaft and a second winding shaft, which are respectively positioned above the exhaust port. The filter cloth is slidably inserted into the housing, and the filter cloth respectively blocks the transmission port and the exhaust port. The two ends of the filter cloth are respectively connected to the first winding shaft and the second winding shaft.

[0007] By adopting the above technical solution, a cooling fan is installed inside the installation cavity to blow air towards the transmission port. This allows the heat generated by the operation of the primary and secondary equipment modules inside the installation cavity to be blown out of the installation cavity through the exhaust port. Then, natural air from the outside is brought into the housing cavity from the heat dissipation vent at the bottom of the housing and blown into the installation cavity by the cooling fan, thus achieving heat dissipation for the ring network box. The filter cloth sealing the transmission port and exhaust port can reduce the possibility of dust, water vapor, etc. in the outside air entering the housing through the transmission port and exhaust port, which is conducive to the primary and secondary equipment modules being in normal working condition. The winding shaft can wind and unwind the filter cloth, making it easy to replace the filter cloth at the transmission port. The filter cloth at the transmission port can also be transferred to the position of the exhaust port. When the airflow in the installation cavity is discharged through the exhaust port, it backflushes the filter cloth, reducing the amount of dust and water vapor on the filter cloth.

[0008] Optionally, the housing is provided with a power coil spring, which is wound around the outer periphery of the first winding shaft, and the power coil spring drives the first winding shaft to wind the filter cloth; The housing is equipped with a control component, which controls the second winding shaft to wind the filter cloth and release the filter cloth.

[0009] By adopting the above technical solution, the power coil spring can drive the first winding shaft to wind the filter cloth, and the control component can control the second winding shaft to wind and release the filter cloth, realizing automatic replacement of the filter cloth. This can reduce the possibility of the filter cloth becoming clogged due to long-term use and affecting the filtration effect. At the same time, it can ensure that the ring network box can continuously and effectively block dust, water vapor and other substances from entering during the heat dissipation process, reducing the possibility of affecting the normal use of the parts inside the ring network box.

[0010] Optionally, the control assembly includes a control gear, a control plate, a first gear block, a second gear block, a limiting gear, a reciprocating lead screw, a control spring, a control belt, and a control block; The control gear slides on the outer circumference of the second winding shaft; The limiting tooth is disposed inside the housing, and the limiting tooth meshes with the control gear. When the control gear rotates, it is slidably connected to the limiting tooth. The control plate slides up and down inside the housing, and the control spring is installed inside the housing. The control spring drives the control plate to slide towards the receiving cavity. The control panel has two sets of control slots, and each set of control slots has multiple slots that are evenly spaced vertically. The first tooth block and the second tooth block are respectively hinged to the control plate, and the first tooth block and the second tooth block are respectively in two sets of control slots and correspond one-to-one; The first tooth block is located near the bottom wall of the control slot, and the second tooth block is located near the top wall of the control slot; A first actuating ring and a second actuating ring are slidably disposed on the outer periphery of the second winding shaft, and a linkage assembly that links the first actuating ring, the second actuating ring and the control gear is slidably connected inside the second winding shaft; The first actuating ring has a first actuating surface inclinedly formed thereon, and the second actuating ring has a second actuating surface inclinedly formed thereon; A first pushing block is provided on the side wall of the filter cloth away from the control panel. When the first winding shaft is completely released from the filter cloth, the first pushing block slides on the first actuating surface and pushes the control gear to mesh with the second tooth block. A second pushing block is provided on the side wall of the filter cloth near the control panel. When the second winding shaft is completely released from the filter cloth, the second pushing block slides on the second actuating surface and pushes the control gear to mesh with the first tooth block. The reciprocating lead screw is rotatably connected to the housing, the control belt slides through the housing, and the control belt is sleeved on the reciprocating lead screw and the output shaft of the cooling fan; The control block slides within the housing and is threadedly connected to the outer periphery of the reciprocating lead screw. When the control block moves toward the mounting cavity, it pushes the control plate upward.

[0011] By adopting the above technical solution, using the control components, the first push block and the second push block, the control gear can be automatically controlled to mesh with the first tooth block or the second tooth block according to the release state of the filter cloth, thereby realizing the alternating winding of the filter cloth by the first winding shaft and the second winding shaft. At the same time, the reciprocating screw is driven to rotate by the cooling fan, so that the control block pushes the control board to realize the automated control of filter cloth replacement, which improves the convenience and timeliness of filter cloth replacement in the ring network box, and effectively ensures the heat dissipation and filtration effect of the ring network box.

[0012] Optionally, the linkage component comprises a linkage column and a linkage block, wherein the linkage column slides within the second winding shaft; The linkage block slides on the second winding shaft. There are multiple linkage blocks, which are respectively connected to the linkage column, the first actuating ring, the second actuating ring, and the control gear.

[0013] By adopting the above technical solution, the linkage column and linkage block realize the linkage of the first actuating ring, the second actuating ring and the control gear, ensuring that the control gear can accurately mesh with the first tooth block or the second tooth block in different release states of the filter cloth, so as to achieve effective control of the winding and release of the filter cloth by the second winding shaft.

[0014] Optionally, the ends of the first push block and the second push block are provided with arc-shaped structures.

[0015] By adopting the above technical solution, the arc-shaped structure can make the first and second push blocks slide more smoothly, reduce friction and jamming with other components, and ensure the stable operation of the control components.

[0016] Optionally, the housing is provided with a support column located inside the transmission port, and the support column abuts against the filter cloth.

[0017] By adopting the above technical solution, the filter cloth can be supported, reducing the possibility of deformation due to its own weight or airflow impact, ensuring the sealing effect of the filter cloth on the transmission port, and thus maintaining the filtration effect on the air entering the installation cavity.

[0018] Optionally, the housing is provided with a scraper, the scraper is located inside the exhaust port, the scraper is located on the side of the filter cloth away from the mounting cavity, and the scraper is slidably connected to the filter cloth.

[0019] By adopting the above technical solution, the scraper can clean the filter cloth as it slides, removing dust and other impurities adsorbed on the filter cloth, maintaining the filtration performance of the filter cloth, and ensuring normal air circulation and heat dissipation in the ring network box.

[0020] Optionally, the housing is provided with baffles corresponding to the exhaust ports one by one. The baffles are adjacent to the exhaust ports, and an air inlet is formed between the top of the baffles and the top wall of the mounting cavity.

[0021] By adopting the above technical solution, the baffle plate can change the airflow direction inside the ring network box, allowing the airflow to flow out from the exhaust port. At this time, the airflow can pass through the components in the installation cavity, improving the heat dissipation effect of the airflow on the components.

[0022] In summary, this application includes at least one of the following beneficial effects: 1. By using a cooling fan to blow air towards the transmission port, the hot air inside the installation cavity can be discharged through the exhaust port, which can effectively dissipate heat inside the ring main unit and solve the problem of excessive temperature rise caused by poor heat dissipation of high-heat-generating components; 2. Sealing the transmission port and exhaust port with filter cloth can reduce the possibility of dust, water vapor and other particles in the air outside the ring network box entering the box through the heat dissipation channel. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the internal cross-section of an embodiment of this application; Figure 3 This is a schematic diagram of the connection structure between the first winding shaft and the box body in an embodiment of this application; Figure 4 This is a schematic diagram of the connection structure between the second winding shaft and the housing in an embodiment of this application; Figure 5 This is a schematic diagram of the state when the filter cloth is released from the second winding shaft in an embodiment of this application; Figure 6 This is a schematic diagram of the control board structure in an embodiment of this application; Figure 7 yes Figure 2 Enlarged schematic diagram of part A; Figure 8 yes Figure 5 Enlarged schematic diagram of part B.

[0024] Reference numerals: 1. Housing; 11. Mounting cavity; 12. Primary and secondary equipment module; 13. Receiving cavity; 14. Transmission port; 15. Heat dissipation port; 16. Cooling fan; 17. Exhaust port; 18. Support column; 19. Scraper; 2. Winding shaft; 3. First winding shaft; 31. Power coil spring; 4. Second winding shaft; 41. First actuating ring; 411. First actuating surface; 42. Second actuating ring; 421. Second actuating surface; 5. Filter cloth; 51. First pushing block; 52. Second pushing block; 6. Control gear; 61. Control plate; 611. Control groove; 62. First tooth block; 63. Second tooth block; 64. Limiting tooth; 65. Reciprocating screw; 66. Control spring; 67. Control belt; 68. Control block; 7. Linkage assembly; 71. Linkage column; 72. Linkage block; 8. Baffle plate; 81. Air inlet. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0026] This application discloses a primary and secondary integrated ring network box.

[0027] Example 1 See Figure 1 and Figure 2 This application provides a primary and secondary fusion ring mesh box, comprising a box body 1, a cooling fan 16, a winding shaft 2, and a filter cloth 5. The box body 1 has an installation cavity 11 and a receiving cavity 13, with the receiving cavity 13 located below the installation cavity 11. A transmission port 14 is provided inside the box body 1, connecting the installation cavity 11 and the receiving cavity 13. A heat dissipation vent 15 is provided at the bottom of the box body 1, connected to the receiving cavity 13. The cooling fan 16 is installed inside the installation cavity 11 and blows air towards the transmission port 14 to supply airflow into the box body 1 and dissipate heat from the components inside. Exhaust ports 17 are respectively provided on opposite side walls of the box body 1, with the two exhaust ports 17 facing each other. The winding shaft 2 is rotatably connected inside the box body 1 and includes a first winding shaft 3 and a second winding shaft 4, which are respectively located above the two opposite exhaust ports 17 and correspond one-to-one. The filter cloth 5 is slidably inserted into the housing 1, sealing the transmission port 14 and the corresponding exhaust port 17. Both ends of the filter cloth 5 are fixedly connected to the first winding shaft 3 and the second winding shaft 4, respectively. This achieves the effect of cooling the ring network box while filtering external dust and moisture, reducing the possibility of external dust and moisture entering the ring network box through the ventilation ports, and minimizing the impact of external dust and moisture on the normal operation of internal components. This is because when the cooling fan 16 is working, it blows hot air from the mounting cavity 11 into the receiving cavity 13 through the transmission port 14, and then exhausts it from the bottom cooling port 15. External air enters the mounting cavity 11 through the exhaust port 17, and the filter cloth 5 filters the incoming air, blocking dust and moisture.

[0028] Specifically, the housing 1 is the main structure of the ring network box, generally made of metal sheet, providing good strength and protection. The housing 1 is characterized by an internal mounting cavity 11 and a receiving cavity 13. The housing 1 houses a primary and secondary equipment module 12, which integrates primary and secondary equipment modules. The primary and secondary equipment module 12 is installed within the mounting cavity 11, while the receiving cavity 13 is used for air circulation and partial installation of the filter cloth 5. The arrangement of the mounting cavity 11 and the receiving cavity 13 allows for an orderly airflow path within the ring network box. Alternatively, the housing 1 can be made of high-strength plastic or other materials, but its protective performance and structural stability must be guaranteed.

[0029] The cooling fan 16 is typically an axial fan. Its working principle involves a motor driving the fan blades to rotate, accelerating airflow. The cooling fan 16 is installed and fixed inside the mounting cavity 11, blowing air towards the transmission port 14. During operation, the cooling fan 16 effectively guides hot air from the receiving cavity 13 to the mounting cavity 11, creating a negative pressure within the receiving cavity 13. This allows air from outside the casing 1 to enter the receiving cavity 13 through the heat dissipation port 15. Alternatively, other types of fans, such as centrifugal fans, can be used, as long as they can achieve the function of accelerating airflow and blowing air towards the transmission port 14.

[0030] The first winding shaft 3 and the second winding shaft 4 are generally made of metal or rigid plastic, possessing a certain strength to withstand the tension of the filter cloth 5. The first winding shaft 3 and the second winding shaft 4 are rotatably connected to the housing 1 via bearings.

[0031] The filter cloth 5 is generally made of fiber material with good filtration performance, such as polyester fiber. The filter cloth 5 slides through the housing 1, allowing it to move flexibly within the housing 1. The filter cloth 5 seals the transmission port 14 and the exhaust port 17, filtering the passing air. Alternatively, the filter cloth 5 can also be made of materials with special filtration functions, such as activated carbon fiber, to enhance the filtration effect on harmful gases. The filter cloth 5 is usually connected to the winding shaft 2 by adhesive or clips, ensuring a secure connection and easy replacement.

[0032] The housing 1 is also fixedly connected to a support column 18, which is located inside the transmission port 14 and abuts against the filter cloth 5. The support column 18 is generally made of metal or rigid plastic and provides support for the filter cloth 5, reducing the possibility of excessive deformation during airflow and minimizing the impact on its filtration efficiency. Alternatively, the support column 18 can be made of a material with some elasticity, such as rubber, to reduce wear on the filter cloth 5.

[0033] See Figure 3 The housing 1 is equipped with a power coil spring 31 and a control assembly. The power coil spring 31 is wound around the outer periphery of the first winding shaft 3, with one end of the power coil spring 31 engaged with the outer periphery of the first winding shaft 3 and the other end engaged and fixed to the housing 1. When the power coil spring 31 elastically releases, it drives the first winding shaft 3 to rotate and wind the filter cloth 5. The power coil spring 31 is generally made of spring steel, possessing good elasticity and toughness. When the filter cloth 5 needs to be wound back onto the first winding shaft 3, the power coil spring 31 releases its elastic potential energy, driving the first winding shaft 3 to rotate, thereby winding the filter cloth 5. Alternatively, the power coil spring 31 can also be made of other elastic materials, such as rubber springs, but its elastic performance and service life must be guaranteed.

[0034] See Figure 4and Figure 5 The control component is located in the housing 1. The control component controls the second winding shaft 4 to wind the filter cloth 5 and release the filter cloth 5.

[0035] See Figure 6 and Figure 7 The control components include control gear 6 (control gear 6 in...) Figure 4 (Winning bid), control panel 61, first tooth block 62, second tooth block 63, limiting tooth 64 (limiting tooth 64 in) Figure 4 (Winning bid), reciprocating lead screw 65, control spring 66 (control spring 66 in) Figure 4 Components such as the control strip 67 and control block 68.

[0036] See Figure 4 and Figure 5 The control gear 6 is located on the outer periphery of the second winding shaft 4, and slides axially on the outer periphery of the second winding shaft 4. The limiting gear 64 is fixedly connected inside the housing 1. The limiting gear 64 has a triangular tooth structure and meshes with the control gear 6, causing the power coil spring 31 (the power coil spring 31 in...) to... Figure 3 When the elastic release is achieved (as indicated by the marked point), the limiting tooth 64 can restrict the rotation of the control gear 6, at which point the filter cloth 5 is in a taut state.

[0037] See Figure 2 and Figure 4 The control plate 61 slides up and down inside the housing 1. The control spring 66 is installed inside the housing 1, with its bottom abutting against the top of the control plate 61 and its top abutting against the housing 1. When the control spring 66 is released elastically, it drives the control plate 61 to slide downward toward the receiving cavity 13.

[0038] See Figure 6 and Figure 8 The control plate 61 has two sets of control slots 611, each set containing multiple slots evenly spaced vertically. A first gear block 62 and a second gear block 63 each correspond to a set of control slots 611. The first gear block 62 and the second gear block 63 are hinged to the control plate 61. The first gear block 62 and the second gear block 63 are located within the two sets of control slots 611 and correspond one-to-one. The first gear block 62 is located near the bottom wall of the control slot 611, and the second gear block 63 is located near the top wall of the control slot 611. This arrangement allows the control gear 6 to mesh with either the first gear block 62 or the second gear block 63 depending on the situation, achieving different control functions.

[0039] A first actuating ring 41 and a second actuating ring 42 are slidably disposed on the outer periphery of the second winding shaft 4. A linkage assembly 7, which links the first actuating ring 41, the second actuating ring 42, and the control gear 6, is slidably connected inside the second winding shaft 4. The linkage assembly 7 includes a linkage column 71 and linkage blocks 72. The linkage column 71 slides within the second winding shaft 4 and is parallel to the second winding shaft 4. Multiple linkage blocks 72 are present and slide axially on the second winding shaft 4. The first actuating ring 41, the second actuating ring 42, and the control gear 6 are fixedly connected to the linkage column 71 via the linkage blocks 72. The linkage column 71 and linkage blocks 72 are generally made of metal, possessing good strength and rigidity. The linkage column 71 can drive the linkage blocks 72 to move, thereby achieving the linkage of the first actuating ring 41, the second actuating ring 42, and the control gear 6. Alternatively, the linkage column 71 and linkage blocks 72 can also be made of high-strength plastic or other materials, but the stability and reliability of the linkage must be ensured.

[0040] The first actuating ring 41 has a first actuating surface 411 circumferentially and obliquely formed on its upper edge, and the second actuating ring 42 has a second actuating surface 421 circumferentially and obliquely formed on its upper edge. A first pushing block 51 and a second pushing block 52 are respectively fixedly connected to the opposite sidewalls of the filter cloth 5 (the second pushing block 52 is located on...). Figure 5 (as indicated by the markings), the ends of the first pushing block 51 and the second pushing block 52 are formed with arc-shaped structures. When the first winding shaft 3 (the first winding shaft 3 is in...) Figure 3 When the filter cloth 5 is fully released (as indicated by the bid), the first pushing block 51 slides on the first actuating surface 411, pushing the control gear 6 to slide axially until it meshes with the second tooth block 63; when the control plate 61 slides upward, the second tooth block 63 flips under gravity to abut against the bottom wall of the corresponding control groove 611, at which point the second tooth block 63 slides past the control gear 6. When the control plate 61 slides downward, the tooth block of the control gear 6 drives the second tooth block 63 to flip to abut against the top wall of the corresponding control groove 611, at which point the second tooth block 63 meshes with the control gear 6, driving the control gear 6 to rotate, causing the second winding shaft 4 to release the wound filter cloth 5.

[0041] When the second winding shaft 4 fully releases the filter cloth 5, the second pushing block 52 slides on the second actuating surface 421, pushing the control gear 6 to slide axially until it meshes with the first tooth block 62. When the control plate 61 slides upward, the first tooth block 62 flips under gravity to abut against the bottom wall of the corresponding control groove 611. At this time, the first tooth block 62 meshes with the control gear 6, causing the control gear 6 to rotate in the opposite direction, so that the second winding shaft 4 winds the filter cloth 5. When the control plate 61 slides downward, the tooth block of the control gear 6 drives the first tooth block 62 to flip upward to abut against the top wall of the corresponding control groove 611. At this time, the first tooth block 62 slides past the control gear 6.

[0042] See Figure 7A reciprocating screw 65 is rotatably connected inside the housing 1, and is parallel to the output shaft of the cooling fan 16. A control belt 67 is connected end to end and slides through the housing 1, and is sleeved on the reciprocating screw 65 and the output shaft of the cooling fan 16. A control block 68 slides inside the housing 1 and is threadedly connected to the outer circumference of the reciprocating screw 65. The control block 68 is located on the side of the control plate 61 away from the mounting cavity 11, and is directly opposite the control plate 61. When the reciprocating screw 65 rotates, it drives the control block 68 to reciprocate in the direction of approaching and moving away from the mounting cavity 11. When the control block 68 moves towards the mounting cavity 11, it pushes the control plate 61 upward, at which time the control spring 66 (the control spring 66 in) Figure 4 (When the control block 68 moves away from the mounting cavity 11, the control spring 66 is released elastically, pushing the control plate 61 downward.)

[0043] See Figure 2 The housing 1 is also fixedly connected to scrapers 19, which are located within the exhaust ports 17 and correspond one-to-one. The scrapers 19 are positioned on the side of the filter cloth 5 furthest from the mounting cavity 11, and are slidably connected to the filter cloth 5. The scrapers 19 are typically made of rubber or plastic. Their function is to scrape away dust and other impurities from the surface of the filter cloth 5 during its movement, ensuring the filtration performance of the filter cloth 5. Alternatively, the scrapers 19 can be made of metal, but their surface must be smoothed to prevent scratching the filter cloth 5.

[0044] The housing 1 is also fixedly connected to a baffle plate 8, which corresponds one-to-one with the exhaust port 17 and is positioned adjacent to the exhaust port 17. An air inlet 81 is formed between the top of the baffle plate 8 and the top wall of the mounting cavity 11. The baffle plate 8 is generally made of metal sheet. Its function is to guide the airflow direction, causing the airflow entering the mounting cavity 11 to flow upwards along the baffle plate 8, dissipating heat from the components inside the housing 1. The cooled airflow then enters the gap between the baffle plate 8 and the vertical wall of the mounting cavity 11 through the air inlet 81. Finally, the airflow passes through the exhaust port 17, flushing the filter cloth 5 before being discharged. At this point, the airflow backflushes the filter cloth 5, reducing the number of impurities filtered onto it. Furthermore, the heat from the airflow after cooling evaporates the moisture on the filter cloth 5. Alternatively, the baffle plate 8 can also be made of plastic or other materials, as long as it fulfills the function of guiding airflow.

[0045] The implementation principle of a primary and secondary integrated ring network box according to an embodiment of this application is as follows: This embodiment effectively solves the problem of external dust and moisture entering the ring main unit and affecting the normal operation of components during traditional ring main units by setting up a filter cloth 5 and a heat dissipation structure inside the ring main unit. The cooling fan 16 ensures airflow inside the ring main unit, achieving the heat dissipation function, while the filter cloth 5 filters the air during airflow, blocking dust and moisture, improving the service life and operational stability of the components inside the ring main unit. Compared with traditional ring main units, it has better practicality and reliability.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A primary and secondary integrated ring network box, characterized in that: Includes a housing (1), the housing (1) having an installation cavity (11), and the housing (1) being provided with a primary and secondary equipment module (12) located in the installation cavity (11). The housing (1) has a receiving cavity (13) located below the mounting cavity (11), the housing (1) has a transmission port (14) connecting the receiving cavity (13) and the mounting cavity (11), and the bottom of the housing (1) has a heat dissipation port (15) connecting the receiving cavity (13). A cooling fan (16) is installed in the mounting cavity (11) and blows air toward the transmission port (14); The box (1) has exhaust ports (17) on opposite side walls respectively. The winding shaft (2) is rotatably connected inside the housing (1). The winding shaft (2) includes a first winding shaft (3) and a second winding shaft (4). The first winding shaft (3) and the second winding shaft (4) are respectively above the exhaust port (17). The filter cloth (5) is slidably inserted inside the housing (1). The filter cloth (5) respectively blocks the transmission port (14) and the exhaust port (17). The two ends of the filter cloth (5) are respectively connected to the first winding shaft (3) and the second winding shaft (4).

2. The integrated primary and secondary ring network box according to claim 1, characterized in that: The housing (1) is provided with a power coil spring (31), which is wound around the outer periphery of the first winding shaft (3). The power coil spring (31) drives the first winding shaft (3) to wind the filter cloth (5). The housing (1) is provided with a control component, which controls the second winding shaft (4) to wind the filter cloth (5) and release the filter cloth (5).

3. The integrated primary and secondary ring network box according to claim 2, characterized in that: The control assembly includes a control gear (6), a control plate (61), a first tooth block (62), a second tooth block (63), a limiting tooth (64), a reciprocating lead screw (65), a control spring (66), a control belt (67), and a control block (68). The control gear (6) slides on the outer periphery of the second winding shaft (4); The limiting tooth (64) is disposed inside the housing (1). The limiting tooth (64) meshes with the control gear (6). When the control gear (6) rotates, it is slidably connected to the limiting tooth (64). The control plate (61) slides up and down inside the housing (1), and the control spring (66) is installed inside the housing (1). The control spring (66) drives the control plate (61) to slide towards the receiving cavity (13). The control board (61) has two sets of control slots (611), and each set of control slots (611) has multiple slots that are evenly spaced vertically. The first tooth block (62) and the second tooth block (63) are respectively hinged to the control plate (61), and the first tooth block (62) and the second tooth block (63) are respectively in two sets of control slots (611) and correspond one to one; The first tooth block (62) is located near the bottom groove wall of the control groove (611), and the second tooth block (63) is located near the top groove wall of the control groove (611). The second winding shaft (4) is slidably provided with a first actuating ring (41) and a second actuating ring (42) on its outer periphery. The second winding shaft (4) is slidably connected with a linkage assembly (7) that links the first actuating ring (41), the second actuating ring (42) and the control gear (6). The first actuating ring (41) has a first actuating surface (411) inclinedly provided on it, and the second actuating ring (42) has a second actuating surface (421) inclinedly provided on it. A first pushing block (51) is provided on the side wall of the filter cloth (5) away from the control plate (61). When the first winding shaft (3) is completely released from the filter cloth (5), the first pushing block (51) slides on the first actuating surface (411) and pushes the control gear (6) to mesh with the second tooth block (63). A second pushing block (52) is provided on the side wall of the filter cloth (5) near the control plate (61). When the second winding shaft (4) is completely released from the filter cloth (5), the second pushing block (52) slides on the second actuating surface (421) and pushes the control gear (6) to mesh with the first tooth block (62). The reciprocating lead screw (65) is rotatably connected inside the housing (1), the control belt (67) is slidably inserted inside the housing (1), and the control belt (67) is sleeved on the output shaft of the reciprocating lead screw (65) and the cooling fan (16). The control block (68) slides inside the housing (1) and is threaded to the outer periphery of the reciprocating screw (65). When the control block (68) moves toward the mounting cavity (11), the control block (68) pushes the control plate (61) upward.

4. The integrated primary and secondary ring network box according to claim 3, characterized in that: The linkage component (7) consists of a linkage column (71) and a linkage block (72), wherein the linkage column (71) slides within the second winding shaft (4); The linkage block (72) slides on the second winding shaft (4). There are multiple linkage blocks (72) and they are respectively connected to the linkage column (71), the first actuating ring (41), the second actuating ring (42), and the control gear (6).

5. The integrated primary and secondary ring network box according to claim 3, characterized in that: The ends of the first push block (51) and the second push block (52) are provided with arc-shaped structures.

6. The integrated primary and secondary ring network box according to claim 1, characterized in that: The housing (1) is provided with a support column (18) located inside the transmission port (14), and the support column (18) abuts against the filter cloth (5).

7. The integrated primary and secondary ring network box according to claim 1, characterized in that: The housing (1) is provided with a scraper (19), which is located inside the exhaust port (17). The scraper (19) is located on the side of the filter cloth (5) away from the mounting cavity (11), and the scraper (19) is slidably connected to the filter cloth (5).

8. The integrated primary and secondary ring network box according to claim 1, characterized in that: The housing (1) is provided with baffles (8) that correspond one-to-one with the exhaust port (17). The baffles (8) are adjacent to the exhaust port (17), and an air inlet (81) is formed between the top of the baffles (8) and the top wall of the mounting cavity (11).

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