Intelligent primary and secondary fusion pole-mounted circuit breaker

Abstract

The invention relates to an intelligent primary and secondary fusion pole-mounted circuit breaker, and relates to the technical field of intelligent power grids, the intelligent primary and secondary fusion pole-mounted circuit breaker comprises a circuit breaker body and a plurality of pole columns fixedly arranged on the circuit breaker body, the left and right edges of the bottom surface of the circuit breaker body are fixedly provided with supporting plates, and the front side surface of the circuit breaker body is rotatably provided with a plurality of control handles; a protection plate capable of being adjusted to a protection state and a supporting state is arranged outside the circuit breaker body; the protection plate is detachably installed on the front side of the circuit breaker body in the vertical direction in the protection state, and a receding gap exists between the protection plate and the front side of the circuit breaker body at the moment. During transportation, the protection plate is vertically and detachably installed on the front side of the circuit breaker body, an effective physical barrier is formed, and the risk of deformation of the control handle is reduced.

Description

Technical Field

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

[0002] In the construction and upgrading of smart grids, integrated primary and secondary pole-mounted circuit breakers serve as key core equipment, undertaking important functions such as line protection, fault isolation, and load control. Their operational stability directly affects the reliability and quality of power supply. These devices integrate the switching and arc-extinguishing functions of primary equipment with the intelligent measurement and control functions of secondary equipment. They are characterized by compact structure, convenient operation and maintenance, and a high degree of intelligence. Widely used in branch lines and tie lines of 10kV-35kV distribution network overhead lines, they are crucial for achieving distribution network automation and improving the level of lean grid management, playing an irreplaceable role in the large-scale deployment of smart grids.

[0003] A pole-mounted circuit breaker disclosed in related technologies has an overall structural design focused on functional integration and installation practicality. It mainly includes the circuit breaker body and a disconnecting switch fixed to one side. The top of the circuit breaker body is equipped with three poles for circuit switching and insulation, a support frame is fixedly mounted on the bottom, and lifting rings are rotatably connected to the left and right sides. Furthermore, the front side of the circuit breaker body has a rotatable connector for inserting external cables and several manually controlled rotary handles. The connector is used for quick connection of secondary control cables, while the rotary handles are used for manual operation of the circuit breaker in emergency scenarios.

[0004] During the actual transportation of pole-mounted circuit breakers, the connector and rotary handle are directly rotated and installed on the front side of the main body. When loading, unloading, handling, vehicle bumps, or contact with other items, the exposed connector and rotary handle are easily subjected to collisions, squeezing, or scratches. This may not only cause damage to the connector interface and poor contact, but may also cause deformation of the rotary handle and malfunction, thereby affecting the subsequent installation, commissioning, and normal operation of the pole-mounted circuit breaker. In severe cases, it may even require replacement of parts, increasing maintenance costs and the risk of project delays, indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide an intelligent primary and secondary integrated pole-mounted circuit breaker, which solves the problem that the pole-mounted circuit breaker's connector and rotating handle are easily damaged by impacts during transportation in the aforementioned related technologies.

[0006] The intelligent primary and secondary integrated pole-mounted circuit breaker provided in this application adopts the following technical solution: An intelligent primary and secondary integrated pole-mounted circuit breaker includes a circuit breaker body and several poles fixed on the circuit breaker body. Support plates are fixed on the left and right edges of the bottom surface of the circuit breaker body. Several control handles are rotatably mounted on the front side of the circuit breaker body. The exterior of the circuit breaker body is provided with a protective plate adjustable to a protective state and a support state. In the protective state, the protective plate is detachably installed vertically on the front side of the circuit breaker body, with a clearance between the protective plate and the front side of the circuit breaker body. In the support state, the protective plate is detachably installed horizontally below the circuit breaker body, with the bottom surface of the circuit breaker body abutting against the top surface of the protective plate.

[0007] By adopting the above technical solution, the protective plate can be vertically and detachably installed on the front side of the circuit breaker body during transportation. The clearance between the protective plate and the front side of the body can not only avoid squeezing the control handle and other components, but also form an effective physical barrier to block collisions and scratches during handling and bumping. This significantly reduces the risk of control handle deformation and operational failure, ensures the integrity of components and subsequent performance, and reduces maintenance costs and potential delays in the project schedule. During installation, the protective plate can be switched to a horizontal state and detachably installed under the body. It works in conjunction with the bottom support plate to form a multi-point support structure, increasing the contact area with the installation surface and improving the installation stability of the circuit breaker under complex outdoor high-altitude conditions, resisting the effects of strong winds and vibrations.

[0008] Optionally, the protective plate is an elastic telescopic plate that can be adjusted vertically and has active elastic shortening performance. When the protective plate is in the protective state, extension plates facing the circuit breaker body are vertically fixed on the top and bottom surfaces of the protective plate. Limiting strips are fixed on the sides of the two extension plates that are close to each other. Limiting slots are opened on the front edges of the bottom and top surfaces of the circuit breaker body, and limiting grooves are opened on the lower front and back sides of the circuit breaker body. When the protective plate is in the protective state, the two limiting strips are respectively inserted into the corresponding limiting slots, and when the protective plate is in the supporting state, they are respectively inserted into the corresponding limiting grooves.

[0009] By adopting the above technical solution, the elastic expansion characteristic can be adapted to circuit breaker bodies of different sizes, improving versatility; in the protective state, the limit strip is inserted into the limit slots on the top and bottom surfaces of the body, and a stable connection is achieved by means of elastic shortening force, ensuring that the protective plate does not loosen during transportation; in the support state, the limit strip is switched to be inserted into the limit grooves on the front and lower back sides of the body, and is locked by elastic force to ensure the reliability of the support structure.

[0010] Optionally, a connecting plate is rotatably connected to the left and right sides of the protective plate near the extension plate, and a receiving plate is rotatably connected to the connecting plate. An elastic pad is fixed on the vertical outer surface of the receiving plate when the protective plate is in the protective state. When the protective plate is in the protective state, the receiving plate can be rotated to the bottom of the extension plate, and the elastic pad is pressed against the front side of the circuit breaker body at this time.

[0011] By adopting the above technical solution, in the protective state, the receiving plate can be rotated to the bottom of the extension plate, and the elastic pad is pressed against the front side of the circuit breaker body. On the one hand, the buffering characteristics of the elastic pad are used to avoid the body and the receiving plate from hard contact causing impact damage, further enhancing the protection effect on components such as the control handle; on the other hand, the pressed state can improve the connection stability between the protective plate and the body, preventing the protective plate from shifting due to transportation bumps. At the same time, the rotating connection design of the connecting plate and the receiving plate is flexible in operation and does not affect the state switching and disassembly and assembly convenience of the protective plate.

[0012] Optionally, the extension plate is provided with a locking element; when the protective plate is in the supported state, the receiving plate can be rotated to the side of the protective plate away from the extension plate and limited by the locking element, and the elastic pad is flush with the bottom surface of the support plate at this time.

[0013] By adopting the above technical solution, in the supported state, the receiving plate is fixed to the side of the protective plate by the locking device, and the elastic pad is flush with the bottom surface of the supporting plate, thus increasing the supporting area and improving installation stability. The elastic pad also has a buffering and anti-slip function, alleviating uneven force and increasing friction. The overall operation is convenient, taking into account both support reliability and usage flexibility.

[0014] Optionally, when the protective plate is in the protective state, a receiving groove is provided on the side of the two receiving plates on the same vertical side that are far apart from each other. The locking member includes a positioning protrusion rotatably installed in the receiving groove. The positioning protrusion can rotate to a vertical locking state where it rotates out of the receiving groove and to a horizontal storage state where it rotates back into the receiving groove. An elastic telescopic rod with active elastic elongation performance is rotatably connected to the side of the two extension plates that are far apart from each other. The rotation surface of the elastic telescopic rod is parallel to the side of the two extension plates that are far apart from each other. A positioning notch is provided on the end face of the elastic telescopic rod that is far away from the extension plates. When the protective plate is in the protective state, the receiving plate is rotated to the state of abutting against the side of the protective plate that is far away from the extension plates, and the positioning protrusion is in the vertical locking state, the positioning protrusion can be inserted into the positioning notch to lock the state of the receiving plate as the elastic telescopic rod rotates and extends.

[0015] By adopting the above technical solution, in the protected state, the positioning protrusion rotates out to a vertically locked state. The elastic telescopic rod, with its active elastic extension performance, can rotate and extend to make the positioning protrusion engage with the positioning notch, achieving a stable lock on the receiving plate. This prevents the receiving plate from loosening or shifting due to transportation bumps, ensuring the reliability of the protective structure. The positioning protrusion can be rotated into the receiving groove for horizontal storage, without affecting the switching and disassembly of the protective plate. The elasticity and rotation design of the elastic telescopic rod makes the locking operation smooth and convenient, requiring no additional complex tools. This further enhances the protective effect on the circuit breaker body in the protected state and improves the safety during equipment transportation.

[0016] Optionally, a first inclined surface is provided on the opening edge of the positioning notch.

[0017] By adopting the above technical solution, the first inclined surface at the edge of the positioning notch opening plays a guiding role. When locking the receiving plate in the protective state, it can guide the positioning protrusion to slide into the positioning notch more smoothly, reducing the difficulty of alignment and making the rotation and extension locking operation of the elastic telescopic rod more convenient and efficient.

[0018] Optionally, a traction groove is provided on the opening edge of the receiving sink.

[0019] By adopting the above technical solution, the traction groove provides a convenient force application point for the state switching of the positioning convex plate, which makes it easy for operators to quickly rotate the positioning convex plate, which is horizontally stored in the receiving sink, to the vertical locking state without the need for additional tools, making the operation labor-saving and efficient.

[0020] Optionally, the two extension plates are provided with coaxial positioning through holes, and a positioning rod is slidably provided on the inner wall of the positioning through holes and an elastic extrusion member is fixed thereon; when the positioning protrusion plate is in a horizontal storage state and located below the extension plates, a positioning slot coaxial with the positioning through holes is provided on its top surface; the elastic extrusion member drives the positioning rod to slide away from the positioning slot, and a guide arc surface is provided on the edge of the end of the positioning rod away from the positioning slot; when the positioning slot and the positioning through hole are coaxial, the elastic telescopic rod can rotate with itself and press the inner end of the positioning rod along the guide arc surface to insert it into the positioning slot.

[0021] By adopting the above technical solution, in the supported state, after the positioning convex plate is horizontally retracted, the positioning slot and the positioning through hole are coaxial. When the elastic telescopic rod rotates, it squeezes the positioning rod along the guide arc surface, causing its inner end to insert into the positioning slot, thereby achieving secondary locking of the receiving plate. This further improves the stability of the support structure and prevents loosening due to long-term use or vibration. The elastic squeezing component can drive the positioning rod to reset without affecting the unlocking operation. The overall design requires no additional tools, and the locking process is automatically completed with the help of the elastic and guiding structure, making the operation convenient. At the same time, the double locking ensures the reliability of the supported state and is suitable for the high requirements of equipment installation stability in complex outdoor working conditions.

[0022] Optionally, a fixing protrusion is fixedly provided on the outer periphery of the positioning rod, and a positioning groove is provided on the opening edge of the positioning through hole away from the positioning slot for the fixing protrusion to slide into. The elastic compression member includes a compression spring located in the positioning groove and in a compressed state. The two ends of the compression spring are fixedly connected to the inner side of the positioning protrusion and the bottom wall of the positioning groove, respectively.

[0023] By adopting the above technical solution, the fixed convex plate cooperates with the positioning groove to provide guidance and limit for the sliding of the positioning rod and avoid deviation; the compression spring in the compressed state can stably provide elastic restoring force to ensure that the positioning rod can reliably insert into or disengage from the positioning slot; the structure is simple and compact and easy to assemble, which not only ensures the stability of the secondary locking, but also makes the unlocking operation smooth, improving the practicality and reliability of the support state locking mechanism.

[0024] Optionally, a guide slope is provided on the end edge of the positioning rod facing the positioning slot.

[0025] By adopting the above technical solution, the guide slope of the positioning rod toward the positioning slot plays a precise guiding role. When the elastic telescopic rod squeezes the positioning rod into the positioning slot, it can guide the positioning rod to slide smoothly into the slot, reduce the difficulty of alignment, and make the locking operation more convenient and efficient.

[0026] In summary, this application includes the following beneficial technical effects: During transportation, the protective plate is vertically and detachably installed on the front side of the circuit breaker body. The clearance between the plate and the front side of the body can prevent the control handle and other components from being squeezed, and can also form an effective physical barrier to block collisions and scratches during handling and bumping. This significantly reduces the risk of control handle deformation and malfunction, ensures the integrity of components and subsequent performance, and reduces maintenance costs and potential delays. During installation, the protective plate can be switched to a horizontal position and detachably installed under the body. It works with the bottom support plate to form a multi-point support structure, increasing the contact area with the mounting surface and improving the installation stability of the circuit breaker in complex outdoor high-altitude conditions, resisting the effects of strong winds and vibrations. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the overall structure of the circuit breaker body and the pole assembly in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the installation and assembly of the protective components in an embodiment of this application; Figure 3 This is a partial cross-sectional view of the installation and assembly of the protective plate when it is in a supported state, according to an embodiment of this application. Figure 4 This is a partial cross-sectional view of the installation and assembly of the protective plate when it is in a protective state, according to an embodiment of this application. Figure 5 This is a schematic diagram illustrating the installation and assembly of the receiving components in an embodiment of this application; Figure 6 This is a partial structural diagram illustrating the installation and mating of the locking component in an embodiment of this application; Figure 7 yes Figure 6 An enlarged schematic diagram of part A in the middle; Figure 8 This is a partial cross-sectional view of the installation and fitting of the positioning rod in an embodiment of this application; Figure 9 yes Figure 8 Enlarged schematic diagram of part B.

[0028] In the diagram, 1. Circuit breaker body; 11. Pole post; 12. Limiting groove; 13. Support plate; 14. Control handle; 15. Limiting slot; 2. Protective assembly; 21. Protective plate; 22. Extension plate; 221. Positioning through hole; 222. Positioning recess; 23. Limiting strip; 3. Receiving assembly; 31. Connecting plate; 32. Receiving plate; 321. Accommodating recess; 322. Traction groove; 33. Elastic pad; 4. Locking component; 41. Positioning protrusion; 411. Positioning slot; 42. Elastic telescopic rod; 421. Positioning notch; 422. First inclined surface; 5. Positioning rod; 51. Guide inclined surface; 52. Guide arc surface; 53. Fixing protrusion; 6. Elastic pressing component; 61. Compression spring. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings.

[0030] Example: Reference Figure 1 and Figure 2 An intelligent primary and secondary integrated pole-mounted circuit breaker includes a circuit breaker body 1, three poles 11 fixed on the circuit breaker body 1, support plates 13 fixed on the left and right edges of the bottom surface of the circuit breaker body 1, several control handles 14 rotatably installed on the front side of the circuit breaker body 1, and a protective component 2 provided on the outside of the circuit breaker body 1, wherein the protective component 2 includes a protective plate 21 that can be adjusted to a protective state and a support state. When the protective plate 21 is in the protection state (i.e., the circuit breaker transportation state), the protective plate 21 is detachably installed on the front side of the circuit breaker body 1 in the vertical direction, and there is a clearance between the protective plate 21 and the front side of the circuit breaker body 1 at this time; when the protective plate 21 is in the support state (i.e., the circuit breaker installation and application state), the protective plate 21 is detachably installed below the circuit breaker body 1 in the horizontal direction, and the bottom surface of the circuit breaker body 1 abuts against the top surface of the protective plate 21 at this time.

[0031] Reference Figure 3 and Figure 4The protective plate 21 is an elastic telescopic plate that can be adjusted along its vertical length and has active elastic shortening performance. This is a conventional telescopic structure and will not be described in detail here. When the protective plate 21 is in the protective state, extension plates 22 facing the circuit breaker body 1 are vertically fixed on the top and bottom surfaces, and limit strips 23 are fixed on the sides of the two extension plates 22 that are close to each other. Limit slots 15 are opened on the front edge of the bottom and top surfaces of the circuit breaker body 1, and limit grooves 12 are opened on the lower front and back sides of the circuit breaker body 1. When the protective plate 21 is in the protective state, the two limiting strips 23 are respectively inserted into the corresponding limiting grooves 15 and are held in place by the elastic shortening property of the protective plate 21; when the protective plate 21 is in the supporting state, the two limiting strips 23 are respectively inserted into the corresponding limiting grooves 12 and are held in place by the elastic shortening property of the protective plate 21.

[0032] Reference Figure 4 and Figure 5 The protective plate 21 is provided with a receiving component 3 on its outside. The receiving component 3 includes a connecting plate 31 rotatably connected to the left and right sides of the protective plate 21 near the extension plate 22. A receiving plate 32 is rotatably connected to the connecting plate 31. An elastic pad 33 made of rubber is fixed on the vertical outer surface of the receiving plate 32 when the protective plate 21 is in the protective state. When the protective plate 21 is in the protective state, the receiving plate 32 can be rotated to the underside of the extension plate 22, and the elastic pad 33 is pressed against the front side of the circuit breaker body 1 at this time, which enhances the contact stability between the protective plate 21 and the front side of the circuit breaker body 1 in this state.

[0033] Reference Figure 5 and Figure 6 The extension plate 22 is provided with a locking element 4; when the protective plate 21 is in the supported state, the receiving plate 32 can be rotated to the side of the protective plate 21 away from the extension plate 22 and limited by the locking element 4. At this time, the elastic pad 33 is flush with the bottom surface of the support plate 13. In this way, the protective plate 21, the receiving plate 32 and the elastic pad 33 are used to provide auxiliary support for the circuit breaker body 1, thereby improving the installation stability of the circuit breaker.

[0034] Reference Figure 6 and Figure 7 When the protective plate 21 is in the protective state, a receiving groove 321 is provided on the side of the two receiving plates 32 on the same vertical side that are far apart from each other. The locking member 4 includes a positioning protrusion 41 that is rotatably installed in the receiving groove 321. The positioning protrusion 41 can be rotated to the vertical locking state from the receiving groove 321 and to the horizontal storage state of being rotated back into the receiving groove 321. A traction groove 322 is provided on the opening edge of the receiving groove 321 to facilitate rotating the positioning protrusion 41 out. Two extension plates 22 are rotatably connected to each other on their opposite sides. An elastic telescopic rod 42 with active elastic elongation is provided. This is a conventional elastic telescopic structure and will not be described in detail here. The rotation surface of the elastic telescopic rod 42 is parallel to the opposite sides of the two extension plates 22. A positioning notch 421 is provided on the end face of the elastic telescopic rod 42 away from the extension plate 22, and a first inclined surface 422 is provided on the opening edge of the positioning notch 421. When the protective plate 21 is in the protective state, the receiving plate 32 is rotated to the side of the protective plate 21 away from the extension plate 22 and the positioning protrusion 41 is in the vertically locked state, the positioning protrusion 41 can be inserted into the positioning notch 421 along the first inclined surface 422 as the elastic telescopic rod 42 rotates and extends, thereby locking the state of the receiving plate 32 at this time.

[0035] Reference Figure 8 and Figure 9 Both extension plates 22 are provided with two coaxial positioning through holes 221. Positioning rods 5 are slidably provided on the inner wall of the positioning through holes 221 and elastic extrusion members 6 are fixedly provided. When the positioning protrusion plate 41 is in a horizontal storage state and located below the extension plate 22, a positioning slot 411 coaxial with the positioning through hole 221 is provided on its top surface, and a guide slope 51 is provided on the end edge of the positioning rod 5 facing the positioning slot 411. The elastic pressing member 6 can drive the positioning rod 5 to slide away from the positioning slot 411. The end edge of the positioning rod 5 away from the positioning slot 411 is provided with a guide arc surface 52. When the protective plate 21 is in the supported state and the positioning slot 411 and the positioning through hole 221 are coaxial, the positioning protrusion 41 is pre-rotated to the horizontal storage state. Then, the elastic telescopic rod 42 can rotate along the guide arc surface 52 to press the inner end of the positioning rod 5 into the positioning slot 411, thereby further locking the receiving plate 32 in this state.

[0036] Reference Figure 8 A fixing protrusion 53 is fixedly provided on the outer periphery of the positioning rod 5. A positioning groove 222 is provided on the opening edge of the positioning through hole 221 away from the positioning slot 411 for the fixing protrusion 53 to slide into. The elastic compression member 6 includes a compression spring 61 located in the positioning groove 222 and in a compressed state. The two ends of the compression spring 61 are fixedly connected to the inner side of the positioning protrusion 41 and the bottom wall of the positioning groove 222, respectively.

[0037] The implementation principle of this application embodiment is as follows: In the transport state, the protective plate 21 is vertically installed on the front side of the circuit breaker body 1. The limit strip 23 is inserted into the limit slot 15 of the body by the elastic shortening performance. The receiving plate 32 is rotated to the bottom of the extension plate 22. The elastic pad 33 is pressed against the body to enhance stability. The positioning protrusion 41 is rotated to the vertical locking state. The elastic telescopic rod 42 is inserted into the positioning notch 421 on the positioning protrusion 41 through the first inclined surface 422 to lock the receiving plate 32. The elastic pad 33 on the receiving plate 32 is used to prevent the protective plate 21 from being bumped.

[0038] When in the application state, the positioning protrusion 41 is rotated to the horizontal storage state in advance, and the protective plate 21 is horizontally installed below the main body. At this time, the limiting strip 23 is inserted into the limiting groove 12 of the main body, the receiving plate 32 is rotated to the side of the protective plate 21 and limited by the locking piece 4, and the elastic pad 33 is flush with the support plate 13 to provide auxiliary support; the elastic telescopic rod 42 squeezes the positioning rod 5 into the positioning slot 411 to further lock the receiving plate 32, and the installation stability is improved with the help of the protective plate 21, the receiving plate 32 and the elastic pad 33. 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 included within the scope of protection of this application.

Claims

1. An intelligent primary and secondary integrated pole-mounted circuit breaker, comprising a circuit breaker body (1) and a plurality of poles (11) fixedly mounted on the circuit breaker body (1), wherein support plates (13) are fixedly mounted on the left and right edges of the bottom surface of the circuit breaker body (1), and a plurality of control handles (14) are rotatably mounted on the front side of the circuit breaker body (1); characterized in that, The circuit breaker body (1) is provided with a protective plate (21) that can be adjusted to a protective state and a support state. When in the protective state, the protective plate (21) is detachably installed on the front side of the circuit breaker body (1) in the vertical direction, and there is a clearance between the protective plate (21) and the front side of the circuit breaker body (1) at this time; when in the supporting state, the protective plate (21) is detachably installed on the bottom of the circuit breaker body (1) in the horizontal direction, and the bottom surface of the circuit breaker body (1) abuts against the top surface of the protective plate (21) at this time.

2. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 1, characterized in that, The protective plate (21) is an elastic telescopic plate that can be adjusted along the vertical length and has active elastic shortening performance. When the protective plate (21) is in the protective state, an extension plate (22) facing the circuit breaker body (1) is vertically fixed on the top and bottom surfaces. A limiting strip (23) is fixed on the side of the two extension plates (22) that are close to each other. Limiting slots (15) are provided on the front edge of the bottom and top surfaces of the circuit breaker body (1), and limiting grooves (12) are provided on the lower front and back sides of the circuit breaker body (1); the two limiting strips (23) are respectively inserted into the corresponding limiting slots (15) when the protective plate (21) is in the protective state, and respectively inserted into the corresponding limiting grooves (12) when the protective plate (21) is in the supporting state.

3. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 2, characterized in that, The protective plate (21) is rotatably connected to the extension plate (22) on its left and right sides. The connecting plate (31) is rotatably connected to the receiving plate (32). The receiving plate (32) has an elastic pad (33) fixed on its vertical outer surface when the protective plate (21) is in the protective state. When the protective plate (21) is in the protective state, the receiving plate (32) can rotate to the bottom of the extension plate (22). At this time, the elastic pad (33) is pressed against the front side of the circuit breaker body (1).

4. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 3, characterized in that, The extension plate (22) is provided with a locking element (4); when the protective plate (21) is in the supported state, the receiving plate (32) can be rotated to the side of the protective plate (21) away from the extension plate (22) and limited by the locking element (4), and the elastic pad (33) is flush with the bottom surface of the support plate (13) at this time.

5. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 4, characterized in that, When the protective plate (21) is in the protective state, a receiving groove (321) is provided on the side of the two receiving plates (32) on the same vertical side that are far apart from each other. The locking member (4) includes a positioning protrusion (41) that is rotatably installed in the receiving groove (321). The positioning protrusion (41) can be rotated to a vertical locking state that is rotated out of the receiving groove (321) and to a horizontal storage state that is rotated back into the receiving groove (321). Two extension plates (22) are rotatably connected to each other on their opposite sides. An elastic telescopic rod (42) with active elastic elongation performance is provided. The rotation surface of the elastic telescopic rod (42) is parallel to the opposite sides of the two extension plates (22). A positioning notch (421) is provided on the end face of the elastic telescopic rod (42) away from the extension plates (22). When the protective plate (21) is in a protective state, the receiving plate (32) is rotated to abut against the side of the protective plate (21) away from the extension plate (22), and the positioning protrusion (41) is in a vertically locked state, the positioning protrusion (41) can be inserted into the positioning notch (421) to lock the state of the receiving plate (32) as the elastic telescopic rod (42) rotates and extends.

6. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 5, characterized in that, The positioning notch (421) has a first inclined surface (422) on the opening edge.

7. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 5, characterized in that, The accommodating sink (321) has a traction groove (322) on the opening edge.

8. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 5, characterized in that, The two extension plates (22) are provided with coaxial positioning through holes (221), and a positioning rod (5) is slidably provided on the inner wall of the positioning through hole (221) and an elastic extrusion member (6) is fixedly provided; when the positioning protrusion plate (41) is in a horizontal storage state and located below the extension plate (22), a positioning slot (411) coaxial with the positioning through hole (221) is provided on its top surface. The elastic extrusion member (6) drives the positioning rod (5) to slide away from the positioning slot (411). The end edge of the positioning rod (5) away from the positioning slot (411) is provided with a guide arc surface (52). When the positioning slot (411) and the positioning through hole (221) are coaxial, the elastic telescopic rod (42) can rotate with itself and press the inner end of the positioning rod (5) along the guide arc surface (52) to insert into the positioning slot (411).

9. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 8, characterized in that, A fixing protrusion (53) is fixedly provided on the outer periphery of the positioning rod (5). A positioning groove (222) for the fixing protrusion (53) to slide into is provided on the opening edge of the positioning through hole (221) away from the positioning slot (411). The elastic extrusion member (6) includes a compression spring (61) located in the positioning groove (222) and in a compressed state. The two ends of the compression spring (61) are fixedly connected to the inner side of the positioning protrusion (41) and the bottom wall of the positioning groove (222), respectively.

10. The intelligent primary and secondary integrated pole-mounted circuit breaker according to claim 8, characterized in that, The positioning rod (5) has a guide slope (51) on the end edge facing the positioning slot (411).

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