High-stability primary and secondary fusion complete pole-mounted circuit breaker

Abstract

The invention relates to a high-stability primary and secondary fusion complete column-mounted circuit breaker, and relates to the technical field of intelligent power grids, the high-stability primary and secondary fusion complete column-mounted circuit breaker comprises a circuit breaker body and a plurality of insulating columns fixedly arranged on the top surface of the circuit breaker body, and two supporting plates which are far away from each other are fixedly arranged on the left and right side edges of the bottom surface of the circuit breaker body in the horizontal direction; a plurality of fixing holes are formed in the supporting plate; the left side surface and the right side surface of the circuit breaker body are rotatably connected with a placing plate located above the supporting plate. The placing plate can be rotated to a vertically downward folding state and a horizontally outward application state, and a positioning assembly is arranged outside the circuit breaker body; according to the invention, the side surface of the circuit breaker body is rotatably provided with the placement plate which can be switched to be folded and applied, and the placement plate is adjusted to be in a horizontal outward application state during maintenance, so that an exclusive temporary tool placement space can be provided for maintenance personnel working high above the ground, a tool bag does not need to be frequently rummaged, and the tool taking time is greatly reduced.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to a highly stable primary and secondary integrated pole-mounted circuit breaker. Background Technology

[0002] Pole-mounted circuit breakers are core control and protection devices in power distribution networks, playing an irreplaceable role in ensuring the safe and stable operation of the power grid. Their core functions revolve around line fault handling and operational control. They can quickly disconnect circuits in case of overload, short circuits, or other abnormal conditions to prevent the fault from escalating, and can flexibly switch lines and adjust loads to improve the reliability of the power supply network. From a hardware perspective, the equipment integrates core power electronic components, such as insulated-gate bipolar transistor (IGBT) chips and modules. These high-precision components, with their excellent switching characteristics and control performance, provide solid hardware support for the pole-mounted circuit breaker to achieve millisecond-level precise protection and efficient and stable control, forming the technological foundation for its core function. The pole-mounted vacuum circuit breaker, widely used in current power distribution networks, is designed with ease of installation and operational stability in mind. The main body of the device has three insulating posts mounted on its top surface to ensure the insulation performance of the high-voltage circuit and prevent leakage risks. Traction rings are rotatably mounted on the left and right sides of the main body for easy fixing during transportation and hoisting, improving construction convenience. Support plates are fixed along the left and right edges of the bottom surface of the main body; during installation, the support plates are tightly connected to the crossarm between the pole and the device using screws, ensuring stability. Based on this structural design, the pole-mounted circuit breaker, after installation, is typically about ten meters above the ground, placing it in a high-altitude environment, which reduces interference from the ground environment and ensures pedestrian safety. When maintenance is required on pole-mounted circuit breakers located at a height of ten meters, insulated bucket trucks are needed to transport personnel to the work site. The necessary tools are numerous, including various sizes of wrenches, pliers, screwdrivers, and voltage testers. Currently, maintenance personnel can only carry these tools in tool bags. During high-altitude operations, retrieving tools requires frequent searching, increasing the risk of tools falling. This not only wastes significant time but also increases the workload for maintenance personnel, severely hindering efficient maintenance work and indicating room for improvement. Summary of the Invention

[0003] The purpose of this application is to provide a highly stable integrated primary and secondary pole-mounted circuit breaker to solve the problem in the above-mentioned related technologies where maintenance tools are at risk of falling during later maintenance of the circuit breaker, which affects the overall maintenance efficiency.

[0004] This application provides a highly stable primary and secondary integrated pole-mounted circuit breaker with the following technical solution: A highly stable primary and secondary integrated pole-mounted circuit breaker includes a circuit breaker body and several insulating posts fixed to the top surface of the circuit breaker body. Two mutually spaced support plates are fixed along the horizontal direction on the left and right sides of the bottom surface of the circuit breaker body, and several fixing holes are provided on the support plates. Placement plates located above the support plates are rotatably connected to the left and right sides of the circuit breaker body. The placement plates can be rotated to a vertically downward folded state and a horizontally outward application state. The outside of the circuit breaker body is provided with a positioning component that supports the placement plate in the application state. When the placement plate is in the application state, maintenance tools can be temporarily placed on its top surface.

[0005] By adopting the above technical solution, a placement plate that can be switched between folded and active states is installed on the side of the circuit breaker body. During maintenance, it can be adjusted to the horizontal outward active state, which can provide a dedicated temporary tool placement space for maintenance personnel working at heights. This eliminates the need to frequently search for tool bags, significantly reduces tool retrieval time, lowers the risk of tools falling due to hand-held use or searching, reduces the workload of maintenance personnel, and significantly improves maintenance efficiency. When not in use, the placement plate can be rotated to the vertical downward folded state, which will not take up extra space and avoids interference with surrounding circuits and other components.

[0006] Optionally, when the placement plate is in use, a placement trough is provided on the top surface for temporary placement of maintenance tools.

[0007] By adopting the above technical solution, a placement groove is opened on the top surface of the placement plate in its application state, providing a more suitable placement space for maintenance tools. Compared with flat placement, the groove can limit the tools from all sides, reducing the possibility of tools slipping due to slight equipment shaking or airflow during high-altitude operations, and is especially stable for the placement of small tools such as wrenches and screwdrivers.

[0008] Optionally, when the placement plate is in the application state, a vertically upward limiting plate is fixedly provided on the top edge away from the circuit breaker body. The limiting plate has a limiting notch on its side facing the circuit breaker body, and an elastic pad is fixedly provided on the inner wall of the limiting notch. The positioning assembly includes a fixing rod and two positioning rods located on the vertical sides of the placement plate. The lower end of the positioning rod is rotatably connected to the outer side of the circuit breaker body, and the positioning rod can rotate to a vertically upward state. When the positioning rod is in the vertically upward state, an extension rod facing the circuit breaker body is vertically fixedly provided on its upper end, and the two ends of the fixing rod are respectively fixedly connected to the ends of the two extension rods. When the placement plate is in the application state, the fixing rod can rotate with the positioning rod and be embedded into the limiting notch.

[0009] By adopting the above technical solution, the positioning rod can be rotated and adjusted to precisely insert the fixing rod into the limiting notch of the limiting plate. The combined structure of the positioning rod, extension rod, and fixing rod forms multi-point support for the placement plate, preventing it from swaying or tilting due to the weight of the tool. Simultaneously, the elastic pad on the inner wall of the limiting notch fills the gap between the fixing rod and the notch, reducing wear from hard contact during contact. Its elasticity also enhances the stability of the fixing rod after insertion, preventing it from loosening due to slight vibrations at height. Furthermore, the positioning rod can be flexibly rotated to switch states, occupying no extra space when not in use. This ensures the reliability of the placement plate when carrying the tool while maintaining the simplicity and practicality of the equipment structure.

[0010] Optionally, the top surface of the support plate is provided with two elastic telescopic rods located below the placement plate along the vertical direction. The placement plate is provided with connecting rods at both ends fixedly connected to the upper ends of the two elastic telescopic rods respectively. A protruding block is fixed on the side of the two positioning rods on the same side, away from each other. A locking slot is formed on the top surface of the protruding block when the positioning rods are in a vertically upward state. A locking rod is fixed at the upper end of the two elastic telescopic rods on the same side, away from each other. A locking insert is fixed at the upper end of the locking rod above the protruding block. The elastic telescopic rods have an elastic force that causes them to extend. When the placement plate is in a folded state, the bottom surface of the connecting rod presses against the top surface of the connecting rod, causing the connecting rod and locking rod to move downwards. The locking insert can be inserted into the locking slot when the positioning rods are in a vertically upward state. The fixing rod can then serve as a pull ring to facilitate the hoisting of the circuit breaker.

[0011] By adopting the above technical solution, when the placement plate is folded, its bottom surface presses down on the connecting rod, causing the locking block to insert into the locking slot of the positioning rod protrusion. This securely locks the vertically upward-facing positioning rod, preventing it from rotating arbitrarily. Simultaneously, the fixing rod can serve as a lifting ring, eliminating the need for an additional lifting structure and simplifying equipment design. The elastic force of the telescopic rod allows the connecting rod to reset when the placement plate is unfolded, causing the locking block to disengage and unlock, thus balancing ease of lifting, stability in the folded state, and operational flexibility.

[0012] Optionally, a guide slope is provided on the lower edge of the bottom surface of the locking block, and a guide slope is provided at the opening edge of the locking block.

[0013] By adopting the above technical solution, guide slopes and guide ramps are set on the bottom surface of the locking block and the edge of the locking slot opening, which can greatly improve the smoothness of the locking block's insertion into the locking slot. When the placement plate folds and squeezes the connecting rod to move the locking block down, the double ramps can guide the block to accurately align with the slot, avoiding jamming and misalignment problems, making the locking operation more efficient, while reducing wear during component docking and extending the service life of the equipment.

[0014] Optionally, several support notches are provided on the sides of the two support plates that are far apart from each other, and a support block that can slide horizontally is slidably disposed in the support notch; an intermediate rod is provided above the support plate, with its two ends respectively rotatably connected to the top surface of the support block and the outer peripheral surface of the connecting rod; the support block slides out of the support notch in the direction away from the support plate when the connecting rod moves down, and slides into the support notch for storage when the connecting rod moves up to reset.

[0015] By adopting the above technical solution, when the connecting rod moves downward (e.g., after equipment installation or maintenance), the intermediate rod drives the support block to slide out from the support notch of the support plate, increasing the contact range between the equipment and the mounting surface and improving the stability after high-altitude installation; when the connecting rod moves upward to reset (e.g., during transportation), the support block is pulled by the intermediate rod and slides into the notch for storage, reducing the overall size of the equipment and lowering transportation space occupation and costs. Furthermore, the sliding of the support block relies on the linkage between the intermediate rod and the connecting rod, requiring no additional operation, thus combining practicality and convenience.

[0016] Optionally, guide sliders are fixed on opposite sides of the support block, and guide grooves that slide in slidably connect with the guide sliders are provided on the inner wall of the support notch.

[0017] By adopting the above technical solution, guide sliders are provided on both sides of the support block, and guide grooves are opened on the inner wall of the support notch. The sliding cooperation of the two can provide precise guidance for the sliding of the support block, avoiding deviation and jamming during sliding, and making the support block more smoothly and stably extended and retracted. At the same time, it can limit the sliding direction and range of the support block, prevent it from detaching from the support notch, and improve the structural reliability.

[0018] Optionally, a magnetic block is embedded on the top surface of the placement plate when it is in use. The placement plate can be rotated to a vertically upward transport state. At this time, the fixing rod is located above the limiting plate and abuts against one side of the placement plate. At this time, the magnetic block abuts against and attracts the outer side of the circuit breaker body. At this time, the support block slides into the support notch for storage.

[0019] By adopting the above technical solution, when the placement plate is used, the magnetic block on the top surface can attract metal maintenance tools such as wrenches, preventing tools from slipping during high-altitude operations and improving maintenance safety. During transportation, the placement plate is rotated to a vertically upward position, the magnetic block attracts the circuit breaker body, and the fixing rod abuts against the placement plate, which stabilizes the placement plate with a dual action. At the same time, the support block slides into the support notch for storage, which greatly reduces the overall volume of the equipment, reduces the space occupied and cost of transportation, and eliminates the need for additional fixing structures, thus combining practicality and convenience.

[0020] Optionally, a flexible protective curtain is provided above the circuit breaker body. When the placement plate is in a vertically upward state, the two opposite edges of the flexible protective curtain are detachably connected to the two sides of the two limiting plates that are close to each other.

[0021] By adopting the above technical solution, when the placement plate is rotated to a vertically upward transport position, the flexible protective curtain can be fixed between the two limiting plates through a detachable connection. Its flexibility not only blocks dust and debris, preventing contamination or impact to the components above the circuit breaker body during transportation or idleness, but also, through its connection with the limiting plates, further stabilizes the placement plate in a vertically upward position, preventing it from swaying during transportation. Furthermore, the protective curtain is detachable, not affecting equipment installation, maintenance, or other operating conditions, thus balancing protection, fixation, and flexibility of use.

[0022] Optionally, several hooks are fixed on opposite sides of the flexible protective curtain, and locking rings for the hooks to engage are fixed on the sides of the two limiting plates that are close to each other when the placement plate is in a vertically upward state.

[0023] By adopting the above technical solution, the combination of hooks and rings enables the connection between the protective curtain and the limiting plate. The operation is simple and convenient, and the installation and removal of the protective curtain can be completed quickly without the need for additional tools. At the same time, the connection method of hooks snapping into rings is stable and reliable, which can firmly fix the protective curtain during transportation, ensuring its protective effect on the circuit breaker body. It can also help fix the placement plate, taking into account both practicality and convenience.

[0024] In summary, this application includes at least one of the following beneficial technical effects: A foldable and open-position storage plate is mounted on the side of the circuit breaker body. During maintenance, when adjusted to the horizontal outward-facing open-position, it provides a dedicated temporary tool storage space for maintenance personnel working at heights, eliminating the need to frequently search for tool bags, significantly reducing tool retrieval time, lowering the risk of tools falling due to handheld use or searching, reducing the workload of maintenance personnel, and significantly improving maintenance efficiency. When not in use, the storage plate can be folded vertically downwards, without taking up additional space and avoiding interference with surrounding wiring and other components. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a partial structural diagram illustrating the installation and assembly of the placement plate in an embodiment of this application; Figure 3 This is a partial cross-sectional view of the installation and assembly of the placement plate according to an embodiment of this application; Figure 4 This is a partial structural diagram illustrating the installation and assembly of the support components in an embodiment of this application; Figure 5 This is a partial cross-sectional view of the installation and engagement of the locking components in an embodiment of this application; Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle; Figure 7 This is a partial structural diagram illustrating the installation and cooperation of the locking components in an embodiment of this application; Figure 8 This is a partial cross-sectional view of the magnetic block installation and assembly in an embodiment of this application. Figure 9 This is a schematic diagram illustrating the installation and coordination of the flexible protective curtain in an embodiment of this application; Figure 10 yes Figure 9 Enlarged diagram of part B.

[0026] In the diagram, 1. Circuit breaker body; 11. Insulating column; 2. Support assembly; 21. Support plate; 211. Fixing hole; 212. Support notch; 213. Guide groove; 22. Support block; 221. Guide slider; 23. Intermediate rod; 3. Placement assembly; 31. Placement plate; 311. Placement groove; 32. Limiting plate; 321. Limiting notch; 322. Elastic pad; 323. Snap ring; 33. Magnetic block; 4. Positioning assembly; 41. Fixing rod; 42. Positioning rod; 43. Extension rod; 44. Protrusion; 441. Locking slot; 442. Guide slope; 5. Locking assembly; 51. Elastic telescopic rod; 52. Connecting rod; 53. Locking rod; 531. Locking plug; 5311. Guide slope; 6. Flexible protective curtain; 61. Hook. Detailed Implementation

[0027] The present application will be further described in detail below with reference to all the accompanying drawings.

[0028] Example: Reference Figure 1 and Figure 2 A highly stable primary and secondary integrated pole-mounted circuit breaker includes a circuit breaker body 1 and three insulating columns 11 fixed on the top surface of the circuit breaker body 1. A support assembly 2 and a placement assembly 3 are provided on the bottom surface of the circuit breaker body 1. The support assembly 2 includes two support plates 21 fixed on the left and right side edges of the bottom surface of the circuit breaker body 1 in a horizontal direction. The two support plates 21 are arranged in a direction that is far away from each other. Several fixing holes 211 are opened on the support plates 21. The placement assembly 3 includes a placement plate 31 rotatably connected to the left and right sides of the circuit breaker body 1 and located above the support plate 21. When the placement plate 31 is in the application state, a placement groove 311 for temporary placement of maintenance tools is provided on the top surface. The placement plate 31 can be rotated to a vertically downward folded state and a horizontally outward application state. The circuit breaker body 1 is provided with a positioning assembly 4 that supports the placement plate 31 in the application state. When fixing the circuit breaker to the crossarm at a height, screws are used to pass through the fixing holes 211 on the support plate 21 and then screwed into the corresponding screw holes on the crossarm. When inspecting the circuit breaker at a height, the staff can quickly adjust the placement plate 31 to the horizontal outward application state, and then the maintenance tools can be temporarily placed in the placement groove 311 on the top surface of the placement plate 31. After the maintenance is completed, the placement plate 31 is returned to the vertical downward folded state.

[0029] Reference Figure 2 and Figure 3 When the placement plate 31 is in the application state, a vertically upward limiting plate 32 is fixed on the top edge away from the circuit breaker body 1. At this time, the limiting plate 32 has a limiting notch 321 on the side facing the circuit breaker body 1, and a rubber elastic pad 322 is fixed on the inner wall of the limiting notch 321. The positioning assembly 4 includes a fixed rod 41 and two positioning rods 42 located on the vertical sides of the placement plate 31. The lower end of the positioning rod 42 is rotatably connected to the outer side of the circuit breaker body 1. The positioning rod 42 can rotate to a vertically upward state. When the positioning rod 42 is in the vertically upward state, the upper end is vertically fixed with an extension rod 43 facing the circuit breaker body 1. The two ends of the fixed rod 41 are respectively fixedly connected to the ends of the two extension rods 43. When the placement plate 31 is in the application state, the fixing rod 41 can rotate away from the circuit breaker body 1 along with the positioning rod 42, so that the fixing rod 41 is interference-fitted into the limiting notch 321 and abuts against the elastic pad 322, thereby using the combination structure of the positioning rod 42 and the fixing rod 41 to support the placement plate 31 in this state.

[0030] Reference Figure 4 and Figure 5 A locking assembly 5 is provided above the support plate 21. The locking assembly 5 includes two elastic telescopic rods 51 fixed vertically on the top surface of the support plate 21 and located below the placement plate 31. A connecting rod 52 is provided below the placement plate 31, with its two ends fixedly connected to the upper ends of the two elastic telescopic rods 51 respectively. The elastic telescopic rod 51 includes a telescopic rod body and a spring located on the telescopic rod body. It has an elastic force that drives itself to extend. This is a conventional elastic telescopic structure, which will not be described in detail here. On the side of the two positioning rods 42 on the same side that are far apart from each other, a protrusion 44 is integrally formed, and a locking slot 441 is provided on the top surface of the protrusion 44 when the positioning rods 42 are in the vertical upward state; the upper ends of the two elastic telescopic rods 51 are fixedly provided with locking rods 53 located on the side of the two positioning rods 42 on the same side that are far apart from each other, and the upper end of the locking rods 53 is fixedly provided with a locking insert 531 located above the protrusion 44; When hoisting the circuit breaker on the pole, first adjust the positioning rod 42 to the vertical upward position, and then rotate the placement plate 31 downward to the folded position. At this time, the bottom surface of the placement plate 31 overcomes the rebound force of the elastic telescopic rod 51 and squeezes the top surface of the connecting rod 52, so that the connecting rod 52 and the locking rod 53 move down synchronously. The locking block 531 is then inserted into the locking slot 441 to lock the positioning rod 42 and the fixing rod 41 in this state. The fixing rod 41 can then be used as a pull ring to facilitate the hoisting of the circuit breaker.

[0031] Reference Figure 5 and Figure 6 The bottom edge of the locking plug 531 is provided with a guide slope 5311, and the opening edge of the locking plug 531 is provided with a guide slope 442; when the locking plug 531 is inserted into the locking slot 441, the guide slope 5311 and the guide slope 442 make it smoother.

[0032] Reference Figure 3 and Figure 4 Two support notches 212 are provided on the sides of the two support plates 21 that are far apart from each other. A support block 22 that can slide horizontally is provided in the support notch 212. An intermediate rod 23 is provided on the top of the support plate 21, with its two ends rotatably connected to the top surface of the support block 22 and the outer peripheral surface of the connecting rod 52, respectively. A guide slider 221 is integrally formed on the opposite two sides of the support block 22, and a guide groove 213 that slides with the guide slider 221 is provided on the inner wall of the support notch 212, thereby realizing the sliding connection between the support block 22 and the support notch 212. When the connecting rod 52 moves down (that is, when normal installation and maintenance are completed), the support block 22 slides out of the support notch 212 in a direction away from the support plate 21, improving the installation stability of the pole-mounted circuit breaker; when the connecting rod 52 moves up and resets (that is, during transportation), the support block 22 slides into the support notch 212 for storage, reducing the overall volume of the pole-mounted circuit breaker and reducing transportation costs.

[0033] Reference Figure 7 and Figure 8 A magnetic block 33 is embedded on the opening edge of the placement trough 311 of the placement plate 31, and the placement plate 31 can be rotated to a vertically upward transport state. At this time, the fixing rod 41 is located above the limiting plate 32 and abuts against one side of the placement plate 31. The magnetic block 33 abuts against and attracts the outer side of the circuit breaker body 1 (the housing is made of metal material that can be attracted by a magnet). The support block 22 slides into the support notch 212 for storage, further reducing the volume of the circuit breaker in the transport state.

[0034] Reference Figure 9 and Figure 10A flexible protective curtain 6 is provided above the circuit breaker body 1, wherein two hooks 61 are fixed on opposite sides of the flexible protective curtain 6; and a retaining ring 323 for the hooks 61 to be engaged is fixed on the side of the two limiting plates 32 when the placement plate 31 is in a vertically upward state and they are close to each other. When the placement plate 31 is in a vertically upward position, the hooks 61 on the flexible protective curtain 6 are engaged with the corresponding retaining rings 323 on the two limiting plates 32; this setting can both protect the top of the circuit breaker body 1 and keep the placement plate 31 in a vertically upward position.

[0035] The implementation principle of this application embodiment is as follows: Transportation status: When the placement plate 31 is rotated to the vertical upward position, the magnetic block 33 attracts the outer side of the circuit breaker body 1, and the fixing rod 41 abuts against one side of the placement plate 31; the connecting rod 52 moves upward under the action of the elastic telescopic rod 51, and the support block 22 slides into the support notch 212 for storage; the hook 61 of the flexible protective curtain 6 is engaged with the retaining plate 32 and the retaining ring 323, which not only protects the top of the circuit breaker body 1, but also fixes the placement plate 31, reducing the overall volume and transportation costs.

[0036] Lifting and installation status: First, remove the flexible protective curtain 6, then adjust the positioning rod 42 to the vertical upward position, and rotate the placement plate 31 to the vertical downward folded position. The bottom surface of the placement plate 31 presses against the connecting rod 52, causing the elastic telescopic rod 51 to retract and the connecting rod 52 to move down, driving the locking rod 53 and the locking insert 531 to move down synchronously. The locking insert 531 is inserted into the locking slot 441 of the protruding block 44 of the positioning rod 42 along the inclined surface, locking the positioning rod 42 and the fixing rod 41. The fixing rod 41 acts as a lifting pull ring. The connecting rod 52 moves down and drives the support block 22 to slide out of the support notch 212 through the intermediate rod 23, improving the installation stability. In the installation state, the screw passes through the fixing hole 211 of the support plate 21 and is fixed to the crossbeam.

[0037] Maintenance status: First, rotate the placement plate 31 to the horizontal outward application state to unlock the positioning rod 42. Then, rotate the positioning rod 42 away from the circuit breaker body 1 so that the fixing rod 41 is interference-fitted into the limiting notch 321 and presses against the elastic pad 322 to support the placement plate 31. Maintenance tools can be placed into the placement sink 311. The magnetic block 33 can then attract the internal maintenance tools, reducing the possibility of the maintenance tools automatically falling out. After maintenance, rotate the placement plate 31 downward to the folded state.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A highly stable primary and secondary integrated pole-mounted circuit breaker, comprising a circuit breaker body (1) and a plurality of insulating posts (11) fixed on the top surface of the circuit breaker body (1), wherein two mutually spaced support plates (21) are fixed along the horizontal direction on the left and right sides of the bottom surface of the circuit breaker body (1), and the support plates (21) are provided with a plurality of fixing holes (211); characterized in that, The circuit breaker body (1) is rotatably connected to a placement plate (31) located above the support plate (21); The placement plate (31) can be rotated to a vertically downward folded state and a horizontally outward application state. The circuit breaker body (1) is provided with a positioning component (4) to support the placement plate (31) in the application state. When the placement plate (31) is in the application state, maintenance tools can be temporarily placed on its top surface.

2. The highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 1, characterized in that, When the placement plate (31) is in use, a placement trough (311) is provided on the top surface for temporary placement of maintenance tools.

3. The highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 1, characterized in that, When the placement plate (31) is in the application state, a vertically upward limiting plate (32) is fixedly provided on the top edge away from the circuit breaker body (1). At this time, the limiting plate (32) has a limiting notch (321) on the side facing the circuit breaker body (1). An elastic pad (322) is fixedly provided on the inner wall of the limiting notch (321). The positioning component (4) includes a fixed rod (41) and two positioning rods (42) located on the vertical sides of the placement plate (31). The lower end of the positioning rod (42) is rotatably connected to the outer side of the circuit breaker body (1). The positioning rod (42) can be rotated to a vertically upward state. When the positioning rod (42) is in a vertically upward state, an extension rod (43) is vertically fixed at its upper end toward the circuit breaker body (1). The two ends of the fixing rod (41) are respectively fixedly connected to the ends of the two extension rods (43). When the placement plate (31) is in the application state, the fixing rod (41) can rotate with the positioning rod (42) and be embedded into the limiting notch (321).

4. The highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 3, characterized in that, The support plate (21) has two elastic telescopic rods (51) arranged vertically on its top surface, which are located below the placement plate (31). The placement plate (31) has a connecting rod (52) with both ends fixedly connected to the upper ends of the two elastic telescopic rods (51) respectively. A protruding block (44) is fixed on the side of the two positioning rods (42) on the same side that are far apart from each other. The protruding block (44) has a locking slot (441) on its top surface when the positioning rod (42) is in a vertical upward state. The upper ends of the two elastic telescopic rods (51) are fixed with locking rods (53) located on the side of the two positioning rods (42) on the same side that are far apart from each other. The upper end of the locking rod (53) is fixed with a locking insert (531) located above the protruding block (44). The elastic telescopic rod (51) has an elastic force that drives itself to extend. When the placement plate (31) is in a folded state, the bottom surface of the connecting rod (52) presses against the top surface of the connecting rod (52), causing the connecting rod (52) and the locking rod (53) to move downward. At this time, the locking plug (531) can be inserted into the locking slot (441) when the positioning rod (42) is in a vertically upward state. At this time, the fixing rod (41) can be used as a pull ring to facilitate the hoisting of the circuit breaker.

5. A highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 4, characterized in that, The locking block (531) has a guide slope (5311) on the lower edge of its bottom surface, and a guide slope (442) is provided at the opening edge of the locking block (531).

6. A highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 4, characterized in that, Several support notches (212) are provided on the sides of the two support plates (21) that are far apart from each other, and a support block (22) that can slide horizontally is provided in the support notch (212); The support plate (21) has an intermediate rod (23) at its two ends that are rotatably connected to the top surface of the support block (22) and the outer peripheral surface of the connecting rod (52) respectively. When the connecting rod (52) moves down, the support block (22) slides out of the support notch (212) in a direction away from the support plate (21), and when the connecting rod (52) moves up and resets, it slides into the support notch (212) for storage.

7. A highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 6, characterized in that, Guide sliders (221) are fixed on opposite sides of the support block (22), and guide grooves (213) that are slidably connected to the guide sliders (221) are provided on the inner wall of the support notch (212).

8. A highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 6, characterized in that, When the placement plate (31) is in the application state, a magnetic block (33) is embedded on its top surface. The placement plate (31) can be rotated to a vertically upward transport state. The fixing rod (41) is located above the limiting plate (32) and abuts against one side of the placement plate (31). The magnetic block (33) abuts against and attracts the outer side of the circuit breaker body (1). The support block (22) slides into the support notch (212) for storage.

9. A highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 8, characterized in that, A flexible protective curtain (6) is provided above the circuit breaker body (1). When the placement plate (31) is in a vertically upward state, the two opposite edges of the flexible protective curtain (6) are detachably connected to the two sides of the two limiting plates (32) that are close to each other.

10. A highly stable primary and secondary integrated pole-mounted circuit breaker according to claim 9, characterized in that, Several hooks (61) are fixed on opposite sides of the flexible protective curtain (6), and the two limiting plates (32) are fixed on the sides that are close to each other when the placement plate (31) is in a vertically upward state, with locking rings (323) for the hooks (61) to be engaged.

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