An adjustable installation type ring main unit

Abstract

This utility model discloses an adjustable installation ring main unit, including a base, with an adjustment frame slidably connected to the upper end of the base, and a lifting frame slidably connected to the upper end of the adjustment frame. Ring main units are located on both the left and right sides of the upper end of the base. The adjustment mechanism also includes a connecting frame, a worm gear, a worm, a connecting component, an adjustment component, and a moving component. Mounting slots are provided on the upper ends of both sides of the lifting frame, and the connecting frame is rotatably connected to the interior of the mounting slot via a rotating shaft. This adjustable installation ring main unit features a prefabricated mounting frame that allows for quick disassembly and storage. The size of the mounting frame can be quickly adjusted according to the length, width, and height of the ring main unit, adapting to different ring main units while facilitating transportation and avoiding on-site fabrication of the mounting frame. Furthermore, the ring main unit can be quickly moved in and out of the mounting frame via two sets of sliding plates, facilitating subsequent disassembly, assembly, and maintenance of the ring main unit.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, specifically an adjustable installation ring main unit. Background Technology

[0002] Ring main units (RMUs) are a group of electrical transmission and distribution equipment, installed in metal or non-metal insulated cabinets or assembled into modular ring network power supply units. Their core components utilize load switches and circuit breakers. They offer advantages such as simple structure, small size, low price, improved power supply parameters and performance, and enhanced power supply safety. They are widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories. When installing RMUs in prefabricated substations, to ensure convenient disassembly, assembly, and maintenance, as well as operational safety and stability, mounting racks are often installed inside the prefabricated substation enclosure to secure the RMUs. These mounting racks are typically made of insulated... The ring main unit is constructed using insulating boards. Appropriately sized insulating boards are cut on-site according to the length, width, and height dimensions of the ring main unit. These boards are then assembled to form a mounting frame, which is fixed inside the box-type housing. The ring main unit is then secured to the mounting frame using bolts, completing the installation. Traditionally, installing a ring main unit using a mounting frame requires fabricating the frame on-site according to the unit's dimensions. Since multiple ring main units require interconnection, multiple mounting frames are needed, resulting in low installation efficiency and inconvenience. Furthermore, the ring main unit is directly bolted into the mounting frame, making it immobile and hindering subsequent disassembly and maintenance. Therefore, we propose an adjustable mounting ring main unit. Utility Model Content

[0003] The technical problem this utility model aims to solve is to overcome the existing defects and provide an adjustable mounting ring main unit. The mounting frame is a prefabricated frame that can be quickly disassembled and stored. The size of the mounting frame can be quickly changed according to the length, width and height of the ring main unit, adapting to different ring main units while facilitating transportation. This avoids the need for on-site fabrication of the mounting frame. Furthermore, the ring main unit can be quickly moved in and out of the mounting frame via two sets of sliding plates, facilitating subsequent disassembly, assembly and maintenance of the ring main unit. This effectively solves the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable installation ring main unit, including a base, an adjustment frame slidably connected to the upper end of the base, a lifting frame slidably connected to the upper end of the adjustment frame, a ring main unit body on the left and right sides of the upper end of the base, and an adjustment mechanism;

[0005] Adjustment mechanism: It includes a connecting frame, worm gear, worm, connecting assembly, adjusting assembly, and moving assembly. Mounting slots are provided on the upper ends of both sides of the lifting frame. The connecting frames are rotatably connected to the inside of the mounting slots via rotating shafts. The worm gears are fixedly sleeved on the middle of the outer surface of the rotating shaft. The worms are rotatably connected to the middle of the upper end of the lifting frame. The worm gears mesh with the vertically adjacent worms, providing a foundation for the unfolding and retraction of the connecting frame. The connecting assembly is located at the upper end of the lifting frame, the adjusting assembly is located at the lower end of the adjusting frame, and the moving assembly is located between the adjusting frame and the lifting frame. The mounting frame is a prefabricated frame body, allowing for quick disassembly and storage. The size of the mounting frame can be quickly changed according to the length, width, and height of the ring main unit, adapting to different ring main units while facilitating transportation and avoiding on-site fabrication of the mounting frame. It also allows the ring main unit to be quickly moved in and out of the mounting frame via two sets of sliding plates, facilitating subsequent disassembly, assembly, and maintenance of the ring main unit.

[0006] Furthermore, the connecting assembly includes a sliding frame, connecting holes, limiting holes, and limiting bolts. The sliding frames are all slidably connected to the inside of the connecting frame. The connecting holes are all opened at the outer ends of the sliding frames. The limiting holes are evenly opened on the side of the sliding frames away from the middle of the lifting frame. The limiting bolts are all threadedly connected to the side of the connecting frame away from the middle of the lifting frame. The outer surface of the limiting bolts near the middle of the lifting frame is threadedly connected to the inner wall of the vertically adjacent limiting holes, providing a basis for the connection of the two connecting frames.

[0007] Furthermore, the adjustment assembly includes a lead screw, a handwheel, a first bevel gear, a second bevel gear, and connecting bolts. The lead screws are all rotatably connected to the inner center of the adjustment frame, and the inner center of the lifting frame is threadedly connected to the outer surface of the vertically adjacent lead screw. The handwheels are all rotatably connected to the front side of the lower inner end of the adjustment frame. The first bevel gear is located at the rear end of the handwheel, and the second bevel gear is located at the lower end of the lead screw. The first bevel gear meshes with the vertically adjacent second bevel gear. The connecting bolts are threadedly connected to the front and rear sides of the base, and the inner ends of the connecting bolts are threadedly connected to the lower inner end of the vertically adjacent adjustment frame, providing a basis for the movement of the adjustment frame and the rapid lifting and lowering of the lifting frame.

[0008] Furthermore, the movable component includes a sliding column one, a lower sliding plate, a fixing bolt one, a sliding column two, an upper sliding plate, and a fixing bolt two. The sliding columns one are all located on the left and right sides of the lower end inside the adjusting frame. A lower sliding plate is slidably connected between two vertically adjacent sliding columns one. The fixing bolt one is threadedly connected to the front side of the lower sliding plate. The upper end of the outer surface of the fixing bolt one is threadedly connected to the lower end of the vertically adjacent ring network cabinet. The sliding columns two are all located on the left and right sides of the upper end inside the lifting frame. The upper sliding plates are slidably connected to the left and right sides of the top wall of the lifting frame. The middle of the upper sliding plate is slidably connected to the outer surface of the vertically adjacent sliding column two. The fixing bolt two is threadedly connected to the side of the upper sliding plate near the middle of the lifting frame. The side of the outer surface of the fixing bolt two away from the middle of the lifting frame is threadedly connected to the upper end of the outer surface of the vertically adjacent ring network cabinet, providing a foundation for the installation of the ring network cabinet.

[0009] Furthermore, the adjustment mechanism also includes scale lines, all of which are located in the middle of the right side of the lifting frame, providing a basis for the precise lifting and lowering of the lifting frame.

[0010] Furthermore, the adjustment mechanism also includes a fixing plate and a knob. The fixing plates are rotatably connected to the middle of the front side inside the adjustment frame, and the rear ends of the fixing plates are attached to the front ends of the longitudinally adjacent ring main unit. The knobs are all located at the front ends of the fixing plates, providing a basis for the movement and release of the ring main unit.

[0011] Furthermore, it also includes a disconnecting switch, a vacuum circuit breaker, a current transformer, a grounding switch, a voltage transformer, and a microcontroller. The disconnecting switch is located in the middle of the top wall of the ring main unit, the vacuum circuit breaker is located in the middle of the left side wall of the ring main unit, the current transformer is located in the upper middle of the right side wall of the ring main unit, the grounding switch is located in the lower middle of the right side wall of the ring main unit, the voltage transformer is located on the lower left side of the ring main unit, and the microcontroller is located in the upper front of the ring main unit. The input terminal of the microcontroller is electrically connected to an external power supply. The vacuum circuit breaker, current transformer, and voltage transformer are all bidirectionally electrically connected to the microcontroller, providing a foundation for the power supply of the ring main unit.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This adjustable installation ring main unit has the following advantages:

[0013] 1. The mounting frame is a prefabricated frame. The base and adjustment frame can be quickly disassembled to change the distance between the two adjustment frames. The adjustment frame and the lifting frame are integrated. The height of the lifting frame can be adjusted by turning the handwheel to drive the screw. The connecting frame and sliding frame can be unfolded and stored inside the lifting frame through the mechanical self-locking formed by the worm gear and worm. By adjusting the lifting frame and the adjustment frame, it can quickly adapt to the installation of different ring main units. The direct disassembly and storage of the structure also facilitates the transportation of equipment, avoids the need for on-site fabrication of the mounting frame, and improves the installation efficiency of the ring main unit.

[0014] 2. The upper and lower sliding plates are connected to the ring main unit by fixing bolt one and fixing bolt two, respectively. With the limiting of the fixing plate, the ring main unit can move back and forth inside the mounting frame. Pulling the ring main unit forward can easily pull it out of the mounting frame, which is convenient for the inspection and maintenance of the ring main unit. After the ring main unit is pulled out, fixing bolt one and fixing bolt two are also exposed outside the mounting frame. Fixing bolt one and fixing bolt two can be loosened quickly, so as to quickly disassemble and replace the ring main unit. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the adjustment mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the mounting bracket of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the connecting component of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the mobile component of this utility model;

[0020] Figure 6 This is a schematic diagram of the ring main unit of this utility model.

[0021] In the diagram: 1. Base, 2. Adjustment frame, 3. Lifting frame, 4. Ring network cabinet, 5. Adjustment mechanism, 51. Connecting frame, 52. Worm gear, 53. Worm, 54. Connecting assembly, 541. Sliding frame, 542. Connecting hole, 543. Limiting hole, 544. Limiting bolt, 55. Adjustment assembly, 551. Lead screw, 552. Handwheel, 553. Bevel gear one, 554. Bevel gear two, 555. Connecting bolt, 56. Moving assembly, 561. Sliding column one, 562. Lower sliding plate, 563. Fixing bolt one, 564. Sliding column two, 565. Upper sliding plate, 566. Fixing bolt two, 57. Scale line, 58. Fixing plate, 59. Knob, 6. Mounting slot, 7. Disconnecting switch, 8. Vacuum circuit breaker, 9. Current transformer, 10. Grounding switch, 11. Voltage transformer, 12. Microcontroller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This embodiment provides a technical solution: an adjustable installation ring main unit, including a base 1, with an adjustment frame 2 slidably connected to the upper end of the base 1. Slide rails are provided on both the front and rear sides of the upper end of the base 1, and the base 1 is slidably connected to the lower end of the adjustment frame 2 via the slide rails. A lifting frame 3 is slidably connected to the upper interior of the adjustment frame 2. Both the adjustment frame 2 and the lifting frame 3 are in a "mountain" shape. Ring main units 4 are provided on both the left and right sides of the upper end of the base 1. Hinges are provided on the lower front side of each ring main unit 4, which has a cabinet door. The unit also includes a disconnecting switch 7, a vacuum circuit breaker 8, a current transformer 9, a grounding switch 10, a voltage transformer 11, and a microcontroller 12. The disconnecting switch 7 is located in the middle of the top wall of the ring main unit 4, and the vacuum circuit breaker 8 is located in the middle of the top wall of the ring main unit 4. In the middle of the left side wall of the ring main unit 4, the current transformer 9 is located at the upper end of the middle of the right side wall of the ring main unit 4, the grounding switch 10 is located at the lower end of the middle of the right side wall of the ring main unit 4, the voltage transformer 11 is located at the lower left side of the ring main unit 4, and the microcontroller 12 is located at the upper front side of the ring main unit 4. The input terminal of the microcontroller 12 is electrically connected to an external power supply. The vacuum circuit breaker 8, the current transformer 9, and the voltage transformer 11 are all bidirectionally electrically connected to the microcontroller 12. The ring main unit 4, the disconnecting switch 7, the vacuum circuit breaker 8, the current transformer 9, the grounding switch 10, the voltage transformer 11, and the microcontroller 12 form the most common ring main unit structure in the prior art, providing the foundation for the power supply of the ring main unit, and also includes an adjustment mechanism 5.

[0024] Adjustment mechanism 5 includes a connecting frame 51, a worm gear 52, a worm 53, a connecting assembly 54, an adjusting assembly 55, and a moving assembly 56. Mounting slots 6 are provided on the upper ends of both sides of the lifting frame 3. The connecting frame 51 is rotatably connected to the interior of the mounting slot 6 via a rotating shaft. The worm gears 52 are fixedly sleeved on the middle of the outer surface of the rotating shaft. The worm 53 is rotatably connected to the middle of the upper interior of the lifting frame 3. The worm gears 52 mesh with the vertically adjacent worm 53. A drive knob is provided at the front end of each worm 53, providing a base for rotation and for the unfolding and retraction of the connecting frame 51. The connecting assembly 54 is located on the upper interior of the lifting frame 3 and includes a sliding frame 541, a connecting hole 542, a limiting hole 543, and a limiting bolt 56. 44. The sliding frames 541 are all slidably connected to the inside of the connecting frame 51. The connecting holes 542 are all opened at the outer ends of the sliding frames 541. The limiting holes 543 are evenly opened on the side of the sliding frames 541 away from the middle of the lifting frame 3. The limiting bolts 544 are all threadedly connected to the side of the connecting frame 51 away from the middle of the lifting frame 3. The outer surface of the limiting bolts 544 near the middle of the lifting frame 3 is threadedly connected to the inner wall of the vertically adjacent limiting holes 543, providing a basis for the connection of the two connecting frames 51. The adjusting components 55 are all set at the lower end of the inside of the adjusting frame 2. The adjusting components 55 include a lead screw 551, a handwheel 552, a first bevel gear 553, a second bevel gear 554, and a connecting bolt 555. The lead screw 551 is rotatably connected to the middle of the inside of the adjusting frame 2. The inner center of the lowering frame 3 is threaded to the outer surface of the vertically adjacent lead screw 551. A bellows can be added between the bottom wall of the adjusting frame 2 and the lower end of the lifting frame 3. The bellows are fitted onto the outer surface of the lead screw 551 and will contract and expand as the lifting frame 3 moves up and down, providing protection for the lead screw 551 and preventing it from being affected by the external environment. Handwheels 552 are rotatably connected to the front side of the lower end of the adjusting frame 2. Bevel gear 1 553 is located at the rear end of the handwheel 552, and bevel gear 2 554 is located at the lower end of the lead screw 551. Bevel gear 1 553 meshes with the vertically adjacent bevel gear 2 554. Connecting bolts 555 are threaded to the front and rear sides of the base 1, respectively. The inner ends of the connecting bolts 555 are threaded to the vertically adjacent... The lower internal end of the adjacent adjusting frame 2 is threaded, providing a foundation for the movement of the adjusting frame 2 and the rapid lifting of the lifting frame 3. The moving components 56 are all located between the adjusting frame 2 and the lifting frame 3. Each moving component 56 includes a sliding column 561, a lower sliding plate 562, a fixing bolt 563, a second sliding column 564, an upper sliding plate 565, and a second fixing bolt 566. The first sliding column 561 is located on the left and right sides of the lower internal end of the adjusting frame 2. A lower sliding plate 562 is slidably connected between two vertically adjacent first sliding columns 561. The lower end of each lower sliding plate 562 is provided with reinforcing ribs. The lower sliding plate 562 provides sliding support for the ring main unit, and the reinforcing ribs improve the structural strength of the lower sliding plate 562. The first fixing bolt 563 is threaded to the front internal side of the lower sliding plate 562.The upper surface of the first fixing bolt 563 is threaded to the lower end of the vertically adjacent ring main unit 4. The second sliding column 564 is located on the left and right sides of the upper part of the lifting frame 3. The upper sliding plate 565 is slidably connected to the left and right sides of the top wall of the lifting frame 3. The middle of the upper sliding plate 565 is slidably connected to the outer surface of the vertically adjacent sliding column 564. The second fixing bolt 566 is threaded to the side of the upper sliding plate 565 near the middle of the lifting frame 3. The outer surface of the second fixing bolt 566 away from the middle of the lifting frame 3 is threaded to the upper surface of the upper surface of the vertically adjacent ring main unit 4, providing a foundation for the installation of the ring main unit. The adjustment mechanism 5 also includes a scale line 57, which is located on the right middle side of the lifting frame 3. The adjustment mechanism 5 provides a foundation for the precise lifting and lowering of the lifting frame 3. It also includes fixed plates 58 and knobs 59. The fixed plates 58 are rotatably connected to the middle of the front side inside the adjustment frame 2, and the rear ends of the fixed plates 58 are in contact with the front ends of the longitudinally adjacent ring main unit 4. The knobs 59 are located at the front ends of the fixed plates 58, providing a foundation for the movement and release of the ring main unit. The mounting frame is a prefabricated frame, allowing for quick assembly, disassembly, and storage. The dimensions of the mounting frame can be quickly changed according to the length, width, and height of the ring main unit, adapting to different ring main units while facilitating transportation and avoiding on-site fabrication of the mounting frame. Furthermore, the ring main unit can be quickly moved in and out of the mounting frame via two sets of sliding plates, facilitating subsequent disassembly, assembly, and maintenance of the ring main unit.

[0025] The working principle of the adjustable mounting ring main unit provided by this utility model is as follows: When installing the ring main unit, first assemble the mounting frame, fix the base 1 to the bottom wall of the transformer housing, and then slide the adjusting frame 2 to the upper end of the base 1 through the slide rail. Adjust the distance between the two adjusting frames 2 according to the width of the ring main unit, and then tighten the connecting bolts 555 to connect the adjusting frame 2 to the base 1. The adjusting frame 2 is limited, and the base 1, adjusting frame 2 and lifting frame 3 form the mounting frame. Then, adjust the height of the mounting frame according to the height of the ring main unit. Turn the handwheel 552 to drive the bevel gear 1 553 to rotate, and the bevel gear 2 554 also rotates to drive the lead screw 551 to rotate. As the lead screw 551 rotates, the lifting frame 3 slowly moves up until... When the appropriate height is reached, the mechanical self-locking generated by the threaded connection between the lead screw 551 and the lifting frame 3 can limit the lifting frame 3. The scale line 57 on the right side of the lifting frame 3 ensures that the lifting height of each lifting frame 3 is the same. After the installation frame is adjusted, pull the lower slide plate 562 forward so that the lower slide plate 562 protrudes outside the installation frame, and the ring main unit can be easily hoisted above the lower slide plate 562. After the ring main unit is placed above the lower slide plate 562, tighten the fixing bolt 563 from the lower front side of the lower slide plate 562 to connect the lower slide plate 562 to the ring main unit. Then push the ring main unit together with the lower slide plate 562 into the installation frame. At this time, the upper end of the ring main unit is in contact with the top wall of the upper slide plate 565. From the upper slide plate 565, approach the lifting frame. Tighten the fixing bolt 566 on one side of the middle section to connect the upper sliding plate 565 to the ring main unit. At this time, both the upper sliding plate 565 and the lower sliding plate 562 are connected to the ring main unit, providing sliding support for the ring main unit. Pulling the ring main unit forward allows it to be easily pulled out of the mounting frame, facilitating maintenance. After the ring main unit is pulled out, fixing bolts 563 and 566 are exposed outside the mounting frame, allowing for quick loosening of these bolts to disassemble and replace the ring main unit. Pushing the ring main unit backward allows it to be quickly pushed into the mounting frame. Then, turn the knob 59 90 degrees to rotate the fixing plate 58, moving it from its initial vertical position. When the ring main unit changes to a horizontal position, the rear end of the fixing plate 58 is in contact with the front end of the ring main unit, creating a limiting effect and preventing the ring main unit from moving forward or backward. When the ring main unit is too large, in order to improve the structural strength of the mounting frame, it is necessary to connect the top of the mounting frame, forming a crossbeam inside the mounting frame. At this time, the connecting frame 51 and the sliding frame 541 are in a retracted state inside the mounting groove 6. The mechanical self-locking formed between the worm gear 52 and the worm 53 can ensure that the connecting frame 51 and the sliding frame 541 are always inside the mounting groove 6. Taking the structure on the two adjusting frames 2 and the lifting frame 3 in the middle and on the far right as an example, rotating the drive knob drives the worm 53 to rotate. Because the worm gear 52 is meshed with the worm 53, as the worm 53 rotates...The worm gears 52 on both sides of the worm 53 also deflect outwards, causing the connecting frame 51 to deflect outwards synchronously. When the connecting frame 51 deflects outwards by ninety degrees, the limiting bolt 544 is loosened. After the limiting bolt 544 completely leaves the limiting hole 543, the sliding frame 541 loses its limiting effect. The sliding frame 541 is then pulled outwards until the ends of the two laterally adjacent sliding frames 541 on the opposite inner sides of the two lifting frames 3 are joined together. Then, an external bolt is passed through the connecting hole 542 and tightened. Next, the limiting bolt 544 is tightened, so that the inner end of the limiting bolt 544 is threadedly connected to the inner wall of the corresponding limiting hole 543. At this point, the connecting frame 51 between the opposite inner sides of the two lifting frames 3 is connected together through the sliding frame 541, forming a crossbeam above the inside of the mounting frame, thus improving the structural strength of the mounting frame.

[0026] It is worth noting that the microcontroller 12 disclosed in the above embodiments is an STM32L011D4 microcontroller, the vacuum circuit breaker 8 is a VS1-12 vacuum circuit breaker, the current transformer 9 is an LZZBJ9-20 current transformer, and the voltage transformer 11 is a JLSZV voltage transformer. The microcontroller 12 controls the operation of the vacuum circuit breaker 8, the current transformer 9, and the voltage transformer 11 using methods commonly used in the prior art.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable installation ring main unit, comprising a base (1), wherein an adjustment frame (2) is slidably connected to the upper end of the base (1), and a lifting frame (3) is slidably connected to the upper end of the adjustment frame (2), and a ring main unit body (4) is provided on both the left and right sides of the upper end of the base (1), characterized in that: It also includes an adjustment mechanism (5); Adjustment mechanism (5): It includes a connecting frame (51), a worm gear (52), a worm (53), a connecting component (54), an adjustment component (55), and a moving component (56). The upper ends of the left and right sides of the lifting frame (3) are provided with mounting slots (6). The connecting frame (51) is rotatably connected to the inside of the mounting slot (6) through a rotating shaft. The worm gear (52) is fixedly sleeved on the middle of the outer surface of the rotating shaft. The worm (53) is rotatably connected to the middle of the upper end of the lifting frame (3). The worm gear (52) is meshed with the vertically adjacent worm (53). The connecting component (54) is set at the upper end of the lifting frame (3). The adjustment component (55) is set at the lower end of the adjusting frame (2). The moving component (56) is set between the adjusting frame (2) and the lifting frame (3).

2. The adjustable installation ring main unit according to claim 1, characterized in that: The connecting assembly (54) includes a sliding frame (541), a connecting hole (542), a limiting hole (543), and a limiting bolt (544). The sliding frame (541) is slidably connected to the inside of the connecting frame (51). The connecting hole (542) is opened at the outer end of the sliding frame (541). The limiting hole (543) is evenly opened on the side of the sliding frame (541) away from the middle of the lifting frame (3). The limiting bolt (544) is threadedly connected to the side of the connecting frame (51) away from the middle of the lifting frame (3). The outer surface of the limiting bolt (544) near the middle of the lifting frame (3) is threadedly connected to the inner wall of the vertically adjacent limiting hole (543).

3. The adjustable installation ring main unit according to claim 1, characterized in that: The adjustment assembly (55) includes a lead screw (551), a handwheel (552), a first bevel gear (553), a second bevel gear (554), and a connecting bolt (555). The lead screw (551) is rotatably connected to the middle of the interior of the adjustment frame (2). The middle of the interior of the lifting frame (3) is threadedly connected to the outer surface of the vertically adjacent lead screw (551). The handwheel (552) is rotatably connected to the front side of the lower end of the interior of the adjustment frame (2). The first bevel gear (553) is located at the rear end of the handwheel (552). The second bevel gear (554) is located at the lower end of the lead screw (551). The first bevel gear (553) is meshed with the vertically adjacent second bevel gear (554). The connecting bolt (555) is threadedly connected to the front and rear sides of the base (1). The inner end of the connecting bolt (555) is threadedly connected to the lower end of the interior of the vertically adjacent adjustment frame (2).

4. The adjustable installation ring main unit according to claim 1, characterized in that: The movable component (56) includes a sliding column one (561), a lower sliding plate (562), a fixing bolt one (563), a sliding column two (564), an upper sliding plate (565), and a fixing bolt two (566). The sliding columns one (561) are all located on the left and right sides of the lower end inside the adjusting frame (2). A lower sliding plate (562) is slidably connected between two vertically adjacent sliding columns one (561). The fixing bolt one (563) is threaded to the front inside of the lower sliding plate (562). The upper end of the outer surface of the fixing bolt one (563) is connected to the vertically adjacent ring network cabinet ( 4) The lower end threaded connection, the sliding column two (564) are all set on the left and right sides of the upper end of the lifting frame (3), the upper slide plate (565) is slidably connected to the left and right sides of the top wall of the lifting frame (3), the middle of the interior of the upper slide plate (565) is slidably connected to the outer surface of the vertically adjacent sliding column two (564), the fixing bolt two (566) is threadedly connected to the side of the upper slide plate (565) near the middle of the lifting frame (3), and the outer surface of the fixing bolt two (566) away from the middle of the lifting frame (3) is threadedly connected to the upper end of the outer surface of the vertically adjacent ring network cabinet (4).

5. An adjustable installation ring main unit according to claim 1, characterized in that: The adjustment mechanism (5) also includes scale lines (57), which are all located on the right side of the lifting frame (3).

6. The adjustable installation ring main unit according to claim 1, characterized in that: The adjustment mechanism (5) also includes a fixing plate (58) and a knob (59). The fixing plate (58) is rotatably connected to the middle of the front side inside the adjustment frame (2). The rear end of the fixing plate (58) is attached to the front end of the longitudinally adjacent ring network cabinet (4). The knob (59) is located at the front end of the fixing plate (58).

7. An adjustable installation ring main unit according to claim 1, characterized in that: It also includes a disconnecting switch (7), a vacuum circuit breaker (8), a current transformer (9), a grounding switch (10), a voltage transformer (11), and a microcontroller (12). The disconnecting switch (7) is located in the middle of the top wall of the ring network cabinet (4), the vacuum circuit breaker (8) is located in the middle of the left side wall of the ring network cabinet (4), the current transformer (9) is located at the upper middle of the right side wall of the ring network cabinet (4), the grounding switch (10) is located at the lower middle of the right side wall of the ring network cabinet (4), the voltage transformer (11) is located at the lower left side of the ring network cabinet (4), and the microcontroller (12) is located at the upper front side of the ring network cabinet (4). The input terminal of the microcontroller (12) is electrically connected to an external power source. The vacuum circuit breaker (8), the current transformer (9), and the voltage transformer (11) are all bidirectionally electrically connected to the microcontroller (12).

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