A pole-mounted circuit breaker with easy installation

Abstract

The application belongs to the field of circuit breakers, and particularly relates to a conveniently-installed pole-mounted circuit breaker, which comprises a circuit breaker body, a support arranged below the circuit breaker body, a bottom plate fixedly arranged at the upper end surface of the support, a base fixedly arranged at the upper end surface of the bottom plate, a butt joint piece fixedly arranged at the lower end surface of the circuit breaker body, a trapezoidal butt joint groove arranged at the upper end surface of the base below the butt joint piece, a plurality of guide inclined surfaces arranged in cooperation with the trapezoidal butt joint groove, an arc-shaped groove arranged on the sidewall of the base at both sides of the trapezoidal butt joint groove, a clamping roller slidingly and clamped in each arc-shaped groove, and an elastic tensioning assembly arranged between the clamping roller and the butt joint piece. Through the arrangement of the clamping roller and other components, the horizontal state of the circuit breaker body during butt joint can be ensured when the butt joint piece arranged below the circuit breaker body is butt jointed with the base, and the pre-fixing of the circuit breaker body during installation is formed through the elastic limiting clamping of the arc-shaped groove and the clamping roller.

Description

Technical Field

[0001] This invention belongs to the technical field of pole-mounted circuit breakers, and particularly relates to a convenient pole-mounted circuit breaker. Background Technology

[0002] In modern power transmission and distribution networks, pole-mounted circuit breakers are key equipment for ensuring the safe and stable operation of power systems and are widely used in the segmentation, interconnection, and protection control of overhead distribution lines. Currently, pole-mounted circuit breakers are typically installed and fixed using methods such as bolting or welding. In these cases, the installation of pole-mounted circuit breakers is cumbersome and lacks precise positioning. Furthermore, maintenance often requires the use of various tools for disassembly, increasing maintenance difficulty and time costs.

[0003] In response, patent publication number CN120473356B disclosed a convenient-installation pole-mounted circuit breaker, including a mounting frame, a circuit breaker, a positioning plate, a support plate, a buffer spring, V-shaped slot blocks, a positioning rod, and a positioning assembly. The mounting frame is fixedly installed on the power pole of the power transmission and distribution network by a clamp assembly, and the support plate is horizontally installed at the top inside the mounting frame. Through the interlocking cooperation between the V-shaped slot blocks on both sides of the positioning plate and the positioning rod of the circuit breaker, the automatic centering characteristic of the V-shaped structure is utilized to achieve rapid and accurate horizontal position correction of the circuit breaker. With the interlocking of the locking blocks in the positioning assembly and the locking slots of the connecting strip, the circuit breaker can be installed quickly. During disassembly, only the circuit breaker needs to be lifted with a crane, and all components can be automatically unlocked and reset, significantly shortening the installation and maintenance time, improving work efficiency, and reducing the difficulty and labor intensity of manual operation.

[0004] Existing technologies achieve automatic alignment and rapid disassembly through the use of positioning components and other structural features, but they still have shortcomings: Firstly, existing pole-mounted circuit breakers are often hoisted by cranes during installation. However, during the docking installation of the circuit breakers, the instability during hoisting can cause imbalance at both ends of the circuit breaker. The existing docking structure lacks a balancing guide structure, which leads to the failure of the docking installation of the circuit breaker, affecting the installation efficiency and stability of the circuit breaker. Secondly, when installing existing circuit breakers for convenience, the fixing structure often uses a large number of springs or elastic telescopic rods and other elastic components for elastic reset and locking. However, when working in harsh areas for a long time, the elastic potential energy of the springs may decrease, resulting in insufficient overall tightness of the connection, which in turn affects the stable normal operation of the circuit breaker. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a conveniently installed pole-mounted circuit breaker. This invention solves the problem of imbalance that easily occurs during hoisting and installation of pole-mounted circuit breakers, while improving the stability, durability, and adjustability of rigid connections while ensuring quick disassembly and installation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a conveniently installed pole-mounted circuit breaker, comprising a circuit breaker body, a bracket disposed below the circuit breaker body, a base plate fixedly disposed on the upper end face of the bracket, a base fixedly disposed on the upper end face of the base plate, a connecting piece fixedly disposed on the lower end face of the circuit breaker body, a trapezoidal connecting groove disposed below the connecting piece on the upper end face of the base, the connecting piece and the trapezoidal connecting groove cooperating with each other and having multiple guide slopes arranged thereon, arc-shaped grooves disposed on both sides of the trapezoidal connecting groove on the side wall of the base, a locking roller slidably engaging inside each arc-shaped groove, an elastic tensioning component disposed between the locking roller and the connecting piece, when the connecting piece and the trapezoidal connecting groove engage with each other, the locking rollers on both sides synchronously slide against the surface of the base and embed into the arc-shaped groove at the end of the engagement to form a pre-fixed connection, a synchronous locking structure is also disposed in the middle of the trapezoidal connecting groove and the connecting piece, the synchronous locking structure completing the locking and fixing of the circuit breaker body.

[0007] Optionally, the elastic tensioning assembly includes first rotating rods rotatably disposed on both sides of the snap-fit ​​roller and on the lower end face of the docking member. Each first rotating rod has a rotating connecting member elastically slidably disposed at the end facing the snap-fit ​​roller. The rotating connecting member is rotatably connected to the snap-fit ​​roller. Each first rotating rod is rotatably disposed between itself and the lower end face of the docking member.

[0008] Optionally, each of the arc-shaped grooves has an arc-shaped rotating groove on its inner circular surface, and each of the arc-shaped rotating grooves has an arc-shaped limiting hook rotatably installed inside. When the arc-shaped limiting hook rotates outward, its inner wall surface presses against the outer surface of the clamping roller.

[0009] Optionally, a first slider is slidably disposed inside the first rotating rod, and a plurality of connecting rods are fixedly disposed on one side of each first slider. One end of each connecting rod is fixedly connected to its adjacent rotating connecting member, and a spring is disposed on the outside of each connecting rod between the first rotating rod and the first slider.

[0010] Optionally, the synchronous locking structure includes a square hole disposed on the bottom surface of the trapezoidal docking groove. An abutment plate is slidably disposed inside the square hole. A plurality of first columnar protrusions are rotatably disposed on the upper end surface of the abutment plate. A columnar groove is disposed above the lower end surface of the docking member of each first columnar protrusion. Each first columnar protrusion is slidably connected to the columnar groove directly above it. A plurality of limiting protrusions are disposed on the outer circular surface of each first columnar protrusion. A limiting groove is disposed above the inner circular surface of the columnar groove of each limiting protrusion. Each limiting protrusion engages with the limiting groove directly above it.

[0011] Optionally, the synchronous locking structure further includes multiple gears rotatably disposed on the end face of the abutment plate, the multiple gears rotating synchronously, the first columnar protrusion being connected to the gears, and the inner sidewall of the limiting groove being provided with a fan-shaped groove, the multiple first columnar protrusions rotating synchronously and embedding into the fan-shaped groove when located in the limiting groove.

[0012] Optionally, multiple second rotating rods are rotatably arranged on both sides of the bottom of the abutment plate. Below the second rotating rods, two symmetrical first limiting elongated holes are provided on the inner bottom surface of the base. Limiting sliders are slidably arranged inside the first limiting elongated holes. The two limiting sliders slide synchronously and are fixedly provided with a connecting crossbar. The connecting crossbar is rotatably connected to the other end of the second rotating rod.

[0013] Optionally, multiple top plates are evenly provided on both sides of the trapezoidal docking groove at the lower end face of the docking member. Multiple through holes are provided below each top plate at the upper end face of the base. A buffer plug is slidably provided inside each through hole. A limiting circular plate is fixedly provided at the upper end face of the buffer plug at the upper port of each through hole. A pressure sensor is connected between every two adjacent top plates and limiting circular plates.

[0014] Optionally, each pressure sensor is provided with an airbag sealed between the limiting circular plate and the top plate, each buffer plug is provided with an air storage chamber, and each airbag is provided with multiple vent holes communicating with the air storage chamber on the upper end face of the limiting circular plate.

[0015] Optionally, a guide surface is provided above the arc-shaped groove on the side wall of the base, and the snap-fit ​​roller is embedded in the arc-shaped groove after rolling against the guide surface.

[0016] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: (1) By setting up components such as arc groove, snap-fit ​​roller and first rotating rod, the present invention can form elastic support for both ends of the circuit breaker body when the docking part set below the circuit breaker body docks with the base, thereby ensuring the horizontal state of the circuit breaker body during docking. At the same time, the elastic limiting snap-fit ​​of the arc groove and snap-fit ​​roller forms a pre-fixation of the circuit breaker body during installation, ensuring the tightness of subsequent rigid fixing, and also improving the installation efficiency of the circuit breaker. (2) The present invention can form a multi-point snap-fit ​​limit between the base and the docking part by setting up fan-shaped grooves, limiting protrusions and gears, so as to ensure the rigid connection stability between the base and the docking part. At the same time, by setting up structures such as bidirectional screws, a rigid pull-down fixation is formed for the docking part, so as to ensure the installation stability of the circuit breaker. (3) By setting up components such as limiting circular plate, pressure sensor and airbag, the present invention can monitor the extrusion pressure between the base and the docking part in real time. When the fixed connection between the rigid connection component between the base and the docking part becomes loose due to plastic micro-deformation, it can be tightened in time to ensure the firmness of the circuit breaker body. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 for Figure 2 A three-dimensional cross-sectional view at point AA; Figure 4 for Figure 2 3D cross-sectional view at point BB; Figure 5 for Figure 3 A magnified view of a section at point C; Figure 6 for Figure 4 A magnified view of a section at point D; Figure 7 for Figure 4 A magnified view of a section at point E in the middle; Figure 8 for Figure 1 A magnified view of a section at point F in the middle; Figure 9 for Figure 3 A magnified view of a section at point G in the middle; Figure 10 This is a schematic diagram of the structure of the base and the docking component in this invention; Figure 11 for Figure 10 A magnified view of a section at point H in the middle; Figure 12 This is a perspective view of the docking parts in this invention; Figure 13 for Figure 12 A magnified view of a section at point L; Figure 14 This is a front view of the buffer plug component in this invention; Figure 15 for Figure 14 A three-dimensional cross-sectional view of the MM section.

[0018] In the diagram: Circuit breaker body 10, bracket 11, clamp 12, rubber pad 13, base plate 14, base 15, connecting piece 16, trapezoidal connecting groove 17, arc groove 18, snap-fit ​​roller 19, first rotating rod 20, rotating connecting piece 21, first slider 22, connecting rod 23, spring 24, snap-fit ​​protrusion 25, eccentric disc 26, snap-fit ​​groove 27, arc rotating groove 28, arc limiting hook 29, arc limiting plate 30, lever 31, columnar groove 32, first columnar protrusion 33, gear 34, limiting groove 35 36. First rotating disk; 37. First limiting elongated hole; 38. Limiting slider; 39. Second limiting elongated hole; 40. Second rotating rod; 41. Limiting elongated groove; 42. Second columnar protrusion; 43. Bidirectional lead screw; 44. Through hole; 45. Top plate; 46. Buffer plug; 47. Limiting circular plate; 48. Pressure sensor; 49. Airbag; 50. Air storage chamber; 51. Vent hole; 52. Elastic telescopic rod; 53. Sealing mesh plate; 54. Fan-shaped groove; 55. Limiting protrusion; 56. Connecting crossbar; 57. Abutment plate; 58. Guide surface; 59. Square hole; 60. Supporting vertical plate. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] Example 1: like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 10 As shown, a conveniently installed pole-mounted circuit breaker includes a bracket 11, which is formed by welding together stainless steel square steel tubes to provide stable support for objects above it. The bracket 11 is fixed to the outer surface of the utility pole by multiple clamps 12. Each clamp 12 is made of high-strength metal wire wound together, with a spiral texture on its outer surface to enhance friction with the utility pole surface and improve the reliability of the bracket 11's fixation on one side of the utility pole. Inside each clamp 12, at the contact point between the bracket 11 and the utility pole, a rubber pad 13 is provided. The rubber pad 13 is made of special nitrile rubber material, with anti-slip texture on its outer surface, further increasing the anti-slip performance between the bracket 11 and the utility pole, and has considerable anti-aging properties, allowing for long-term outdoor use.

[0021] A base plate 14 is bolted to the upper surface of the bracket 11. Multiple drainage holes are provided on the upper surface of the base plate 14 to prevent water accumulation and reduce wind resistance. A base 15 is bolted to the upper surface of the base plate 14. The base 15 is a trapezoidal frame formed by bending and welding sheet metal. A trapezoidal connecting groove 17 is provided on the upper surface of the base 15. A connecting piece 16 is slidably engaged inside the trapezoidal connecting groove 17. A circuit breaker body 10 is bolted to the upper surface of the connecting piece 16. The circuit breaker body 10 is integrated from the circuit breaker housing, arc-extinguishing chamber, operating mechanism, and intelligent control module. It provides overload protection, short-circuit instantaneous tripping, and remote intelligent monitoring functions for transformers and cables. The connecting piece 16 is also an inverted trapezoidal frame formed by bending and welding sheet metal, with its lower end slidably engaged with the trapezoidal connecting groove 17.

[0022] Specifically, when installing the circuit breaker body 10, the bracket 11 needs to be installed at the predetermined height of the utility pole and pre-fixed using the clamp 12. Before installing the circuit breaker body 10, the connecting piece 16 can be inverted and fixed to the lower end face of the circuit breaker on the ground or in the factory. When installing the circuit breaker, simply lift the circuit breaker until the connecting piece 16 at the bottom of the circuit breaker is higher than the trapezoidal connecting groove 17. Then align the connecting piece 16 with the trapezoidal connecting groove 17 and slowly lower it so that the connecting piece 16 slides into the inner wall of the trapezoidal connecting groove 17. During this process, since the connecting piece 16 and the trapezoidal connecting groove 17 slide and cooperate with each other and are provided with multiple guide slopes, they can automatically correct and form an accurate horizontal connection during the sliding process, eliminating installation deviations and achieving precise and rapid mechanical self-positioning. Furthermore, during this sliding insertion process, the elastic support components on both sides of the docking part 16 and the base 15 will be simultaneously triggered to elastically compress each other, thereby forming a balanced support on both sides of the circuit breaker body 10 during installation. At the same time, the meshing and limiting between the elastic support components and the base 15 can also achieve the purpose of pre-fixing the circuit breaker body 10 during installation.

[0023] Furthermore, such as Figure 3 and Figure 8As shown, to ensure the support stability of the circuit breaker body 10 during installation, this embodiment provides two arc-shaped grooves 18 on the opposite side walls of the base 15. Each arc-shaped groove 18 has a snap-fit ​​roller 19 slidably snapped into it. The shape and size of the snap-fit ​​roller 19 are set according to the shape of the arc-shaped groove 18. The snap-fit ​​roller 19 can be embedded in the arc-shaped groove 18. An elastic tensioning component is arranged between each snap-fit ​​roller 19 and the docking part 16. The elastic tensioning component includes a rotating connector 21 at both ends of each snap-fit ​​roller 19. The rotating connector 21 is rotatably connected to the two ends of its adjacent snap-fit ​​roller 19 through a bearing structure. A first rotating rod 20 is rotatably connected to the lower end face of the docking part 16 on one side of each rotating connector 21 through a hinge structure. Each first rotating rod 20 is rotatably connected to the lower end face of the docking component 16 via a hinge structure with an elastic telescopic rod 52. The elastic telescopic rod 52 is an adjustable-stroke elastic telescopic rod, and it is also equipped with multiple sealing structures to ensure that its elastic performance will not be degraded due to rain, dust, or salt spray intrusion during long-term outdoor use in harsh weather conditions. Under the elastic support of one end of the elastic telescopic rod 52 on the side wall of the first rotating rod 20, the two locking rollers 19 can form an elastic compression with the base 15 when the circuit breaker body 10 and docking components 16 are installed together, thereby maintaining the balance of the circuit breaker body 10 during installation. Each arc-shaped groove 18 and trapezoidal docking groove 17 is provided with a guide surface 58 on the outer side wall of the base 15.

[0024] Specifically, during the docking process between the base 15 and the docking member 16, in addition to the mechanical positioning of the docking member 16 and the trapezoidal docking groove 17, the snap-fit ​​roller 19 also contacts the guide surface 58 and slides downward along the inclined surface of the guide surface 58 during the docking process. The first rotating rod 20 then expands and rotates outward around its connection point with the docking member 16. During this process, since the elastic telescopic rod 52 is arranged between the first rotating rod 20 and the docking member 16, the elastic telescopic rod 52 is synchronously compressed and accumulates elastic potential energy. When the snap-fit ​​roller 19 slides to the lowest point of the guide surface 58, the elastic pressure applied to the snap-fit ​​roller 19 will transform into a force that pulls the rotating connector 21 from the first rotating rod 20. The lateral force pushing outward from one side causes the locking roller 19 to extend further outward. Then, the locking roller 19 slides downward against the vertical end face of the base 15. When the locking roller 19 slides to the arc segment of the arc groove 18, since the arc groove 18 is an inwardly concave structure, the locking roller 19 can gradually embed itself into the arc groove 18 under the drive of the elastic potential energy released by the elastic telescopic rod 52, completing adaptive locking and dynamic leveling. During the above movement process, since the two locking rollers 19, the arc groove 18, and the guide surface are all symmetrically arranged, it is ensured that the circuit breaker body 10 is always subjected to balanced force during docking, effectively suppressing tilting or shaking caused by unilateral load.

[0025] Furthermore, such as Figure 3 and Figure 5 As shown, to further improve the pre-fixing strength during circuit breaker installation, the elastic tensioning assembly in this application includes a first slider 22 slidably disposed inside the first rotating rod 20. Multiple connecting rods 23 are fixedly connected to one side of each first slider 22. The other end of each connecting rod 23 extends out of the end face of the first rotating rod 20. The end of the connecting rod 23 extending out of the first rotating rod 20 is fixedly connected to its adjacent rotating connecting member 21. Dustproof sealing rings and self-lubricating coatings are provided at the sliding contact points between the connecting rod 23 and the first rotating rod 20 to ensure smooth sliding and long-term stability, and to prevent external dust and moisture from penetrating the interior of the rotating connecting member 21, thereby avoiding corrosion and wear of the internal structure. A spring 24 is provided on the outside of each connecting rod 23 between the inner wall of the first rotating rod 20 and the first slider 22. The spring 24 is a compression spring made of high-elasticity alloy steel wire, possessing excellent fatigue resistance and temperature stability. During the installation of the circuit breaker body 10, each snap-fit ​​roller 19 rotates with the first rotating rod 20 and is embedded in the arc-shaped groove 18 via the first slider 22 and connecting rod 23. At the same time, the first slider 22 and connecting rod 23 are also driven to slide along the inner cavity of the first rotating rod 20, compressing the corresponding spring 24. When the snap-fit ​​roller 19 is fully embedded in the arc-shaped groove 18, each spring 24 pushes the first slider 22 to reset under the action of the rebound force, so that the connecting rod 23 applies a continuous and uniform pre-tightening force to the rotating connecting member 21, further strengthening the structural rigidity and contact stability, ensuring that the snap-fit ​​roller 19 can be stably snapped into the arc-shaped groove 18 adjacent to it, forming a pre-fixation during the circuit breaker installation process.

[0026] Furthermore, such as Figure 1 and Figure 8 As shown, each rotating connector 21 has a snap-fit ​​protrusion 25 on its side wall. An eccentric disk 26 is rotatably mounted on one side of each snap-fit ​​protrusion 25 on the side wall of the first rotating rod 20. Each eccentric disk 26 has a snap-fit ​​groove 27 on its outer circumferential surface away from its eccentric shaft. When unlocking the snap-fit ​​roller 19, the eccentric disk 26 can be rotated, causing its outer circumferential surface to push against the snap-fit ​​protrusion 25, thereby forcing the rotating connector 21 to move outward and pushing the snap-fit ​​roller 19 away from the arc-shaped groove 18. During this process, the snap-fit ​​groove 27 on the eccentric disk 26 also engages with the snap-fit ​​protrusion 25, achieving mechanical self-locking and preventing the eccentric disk 26 from accidentally rotating under vibration conditions, thus ensuring the snap-fit ​​roller 19 can stably disengage.

[0027] It should be noted that the structure of the eccentric disk 26 can also be used to assist the precise embedding of the snap-fit ​​roller 19 into the arc groove 18. When the snap-fit ​​roller 19 first contacts the inclined surface of the base 15, in order to ensure that the initial stroke of the snap-fit ​​roller 19 is sufficient, the eccentric disk 26 can be rotated first and the snap-fit ​​protrusion 25 can be engaged with the snap-fit ​​groove 27. This can push the rotating connector 21 to move outward in advance, giving the snap-fit ​​roller 19 an initial embedding stroke, ensuring that it slides into the arc groove 18 without interference or jamming.

[0028] Furthermore, such as Figure 4 and Figure 6 As shown, in order to completely fix the snap-fit ​​roller 19 in the arc-shaped groove 18, an arc-shaped rotating groove 28 is provided on the inner wall of each arc-shaped groove 18 and the side wall of the base 15 in this embodiment. The arc-shaped rotating groove 28 is an open groove, similar to an arc-shaped slide rail groove. An arc-shaped limiting hook 29 is rotatably provided inside each arc-shaped rotating groove 28. The rotation is limited between every two rotatably connected arc-shaped rotating grooves 28 and arc-shaped limiting hooks 29 by an arc-shaped slide groove and a protrusion structure. A lever plate 31 is provided on one side of the lower end of each arc-shaped limiting hook 29. The lever plate 31 is provided to facilitate the rotation operation of the arc-shaped limiting hook 29. After the snap-fit ​​roller 19 is fitted into the arc-shaped groove 18, the operator can push the lever 31 to rotate outward, thereby rotating the arc-shaped limiting hook 29 through the lever 31. This causes one end of the arc-shaped limiting hook 29 to rotate to the upper outer surface of the snap-fit ​​roller 19 and form a semi-enclosed radial limit on the outer surface of the snap-fit ​​roller 19, thereby completely locking the axial and radial degrees of freedom of the snap-fit ​​roller 19 in the arc-shaped groove 18, ensuring that the circuit breaker body 10 has no displacement or loosening during operation.

[0029] It should be noted that each arc-shaped rotating groove 28 has an arc-shaped limiting plate 30 on the inner side wall of the base 15 on both sides. The side wall of the arc-shaped limiting plate 30 has multiple limiting holes. At the same time, the side wall of each lever 31 also has a limiting hole. By passing bolts through the corresponding limiting holes, the lever 31 is limited and fixed inside the two arc-shaped limiting plates 30. After the arc-shaped limiting hook 29 limits its adjacent clamping roller 19, the fixing of the arc-shaped limiting plate 30 makes the limiting and fixing of the arc-shaped limiting hook 29 to the clamping roller 19 more stable.

[0030] When disassembling the circuit breaker body 10, first rotate the arc-shaped limiting hook 29 to retract it into the arc-shaped rotating groove 28, thereby releasing the restriction on the locking roller 19. Then rotate the eccentric disk 26 to make the locking groove 27 engage with its adjacent locking protrusion 25. At this time, the eccentric disk 26 forms a rigid support between the first rotating rod 20 and the rotating connecting member 21, causing the rotating connecting member 21 to drive the locking roller 19 out of the arc-shaped groove 18. Then, the circuit breaker body 10 is lifted as a whole using hoisting equipment, causing the support structure to detach, completing the disassembly operation. During this disassembly process, multiple locking rollers 19 and other components are stretched outwards simultaneously by multiple elastic telescopic rods 52, and gradually slide out and rise along with the base 15 and guide surface 58. This ensures that the circuit breaker body 10 is subjected to uniform force and has a stable posture during the disassembly process, which can avoid structural deformation or scratches on the contact surface caused by unilateral load and ensure that the circuit breaker body 10 is always in a horizontal posture before it is disassembled from the support structure.

[0031] Furthermore, such as Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, a synchronous locking structure is also provided in the middle of the trapezoidal docking groove 17 and the docking member 16. The synchronous locking structure includes a square hole 59 provided in the bottom surface of the trapezoidal docking groove 17. An abutment plate 57 is slidably provided inside the square hole 59. A plurality of first columnar protrusions 33 are rotatably provided on the upper end surface of the abutment plate 57. A columnar groove 32 is provided above the lower end surface of the docking member 16 above each first columnar protrusion 33. Each first columnar protrusion 33 is slidably connected to the columnar groove 32 above it. A plurality of limiting protrusions 55 are provided on the outer circular surface of each first columnar protrusion 33. A limiting groove 35 is provided above the inner circular surface of the columnar groove 32 above each limiting protrusion 55. Each limiting protrusion 55 is slidably connected to the limiting groove 35 above it. A fan-shaped groove 54 is provided on the inner side wall of each limiting groove 35.

[0032] After the circuit breaker body 10 is pre-fixed, the sliding abutment plate 57 moves upward as a whole, driving multiple first columnar protrusions 33 and limiting protrusions 55 to move vertically upward simultaneously until the upper end face of the sliding abutment plate 57 is in contact with the lower end face of the docking member 16. During this process, the multiple first columnar protrusions 33 and limiting protrusions 55 will each embed into the interior of the multiple aligned columnar grooves 32 and limiting grooves 35. Subsequently, the operator rotates the multiple first columnar protrusions 33 to drive the multiple limiting protrusions 55 to rotate into the adjacent fan-shaped grooves 54. At this time, the multiple first columnar protrusions 33 and the grooves on the multiple fan-shaped grooves 54 above them form an abutment engagement, so that the abutment plate 57 and the lower end face of the docking member 16 form a limiting snap-fit ​​fixation. It should be noted that the up and down movement of the abutment plate 57 is achieved by a tilting pull-down structure, which can adjust the vertical sliding of the abutment plate 57 inside the square hole 59.

[0033] Furthermore, such as Figure 10 and Figure 11 As shown, to ensure that the multiple first columnar protrusions 33 can rotate synchronously, a gear 34 is fixedly provided on the lower end face of each first columnar protrusion 33. Each gear 34 is rotatably connected to the upper end face of the abutment plate 57. The multiple gears 34 are arranged in a planetary gear structure to form a gear disk. By rotating the gear 34 at the center position, the multiple gears 34 can be driven to rotate synchronously, and the rotation angles are all the same, forming synchronous rotation of the multiple first columnar protrusions 33 and the limiting protrusions 55. This ensures that each limiting protrusion 55 can be synchronously engaged into the adjacent sector groove 54, thereby achieving precise coordination of multi-point synchronous engagement action. A first rotating disk 36 is provided below the abutment plate 57. The gear 34 located at the center is fixedly connected to the first rotating disk 36 through a rotating shaft. The setting of the first rotating disk 36 facilitates the rotation of the multiple gears 34.

[0034] When disassembling the circuit breaker body 10, the first rotating disk 36 can be rotated in the opposite direction to drive the multiple limiting protrusions 55 to disengage from the limiting grooves 35. At this time, there is only a sliding connection between the columnar groove 32 and the first columnar protrusion 33. At this time, the circuit breaker body 10 only needs to be lifted upward to achieve quick disassembly of the docking part 16 and the base 15. The whole process does not require the assistance of tools.

[0035] It should be noted that multiple gears 34 use the same tooth profile parameters and module to ensure that the angular velocity of each gear 34 is strictly consistent during the planetary transmission process. This ensures that when the gear 34 at the center rotates, it can drive the multiple external gears 34 to rotate synchronously and uniformly. At the same time, each gear 34 is rotated and fixed to the abutment plate 57 through an annular groove and an annular block. This ensures that the reliability and axial stability of the connection between the gear 34 and the abutment plate 57 are guaranteed without affecting the rotation of the multiple gears 34.

[0036] Furthermore, such as Figure 7 and Figure 11 As shown, to ensure the sliding stability of the sliding contact plate 57, the inclined pull-down structure includes support vertical plates 60 disposed on both sides of the square hole 59 inside the base 15. Each support vertical plate 60 has a first limiting elongated hole 37 on one side of the inner bottom surface of the base 15. A limiting slider 38 is slidably disposed inside each first limiting elongated hole 37. The first limiting elongated hole 37 and the limiting slider 38 are slidably limited by a sliding groove and a sliding block to ensure the stability of the horizontal sliding of the limiting slider 38 inside the first limiting elongated hole 37. Each limiting slider 38 has a support vertical plate 60 disposed on both sides of the square hole 59 inside the base 15. Each of the support plates 60 has a second limiting elongated hole 39 on its side wall. A second rotating rod 40 is rotatably installed inside each second limiting elongated hole 39. One end of each second rotating rod 40 is rotatably connected to the lower end face of the abutment plate 57 through a hinge structure. The other ends of the two second rotating rods 40 on the same side of each support plate 60 are fixedly connected to a connecting crossbar 56. Each connecting crossbar 56 is rotatably connected to the top of its adjacent limiting slider 38. The connecting crossbar 56 facilitates the limiting slider 38 to drive the two second rotating rods 40 on the same side to rotate synchronously.

[0037] Each of the two opposite sidewalls of the second rotating rod 40 is provided with a limiting groove 41. A second columnar protrusion 42 is fixedly provided on one side of the limiting groove 41 on the inner sidewall of the second limiting hole 39. Each second columnar protrusion 42 is slidably connected to its adjacent limiting groove 41. After the abutment plate 57 and the docking piece 16 are fixed and limited by components such as the first columnar protrusion 33, the two limiting sliders 38 slide synchronously in opposite directions. Each limiting slider 38 drives the second rotating rod through the connecting crossbar 56. The second rotating rod 40 is stretched horizontally to both sides. Under the action of the second columnar protrusion 42 and the limiting groove 41, the second rotating rod 40 uses the second columnar protrusion 42 as a fulcrum and, through the lever principle, pryes the abutment plate 57 vertically downward inside the square hole 59. This causes the abutment plate 57 to drive multiple first columnar protrusions 33 and other components to further press the abutment piece 16 down inside the trapezoidal abutment groove 17. At this time, it is only necessary to fix the position of the two limiting sliders 38 after sliding to achieve rigid fixation of the circuit breaker body 10.

[0038] It should be noted that the structure of the limiting groove 41, through its cooperation with the second columnar protrusion 42, ensures that while one end of the second rotating rod 40 slides horizontally with the limiting slider 38, it always ensures that the second columnar protrusion 42 serves as the fulcrum, thereby performing a vertically downward prying and pulling operation on the lower end surface of the abutment plate 57.

[0039] Furthermore, such as Figure 7As shown, a bidirectional lead screw 43 is rotatably installed inside the base 15 below the two first limiting elongated holes 37. Each limiting slider 38 is threadedly connected to the bidirectional lead screw 43. A second rotating disk is installed in the middle of the bidirectional lead screw 43. By rotating the second rotating disk, the bidirectional lead screw 43 can be driven to rotate. The rotation of the bidirectional lead screw 43 causes the two limiting sliders 38 to slide relative to each other along the adjacent first limiting elongated holes 37, thereby realizing bidirectional synchronous driving of the limiting sliders 38. Furthermore, through the rotational connection of components such as the second rotating rod 40, the stable vertical sliding of the abutment plate 57 inside the square hole 59 is ensured.

[0040] It should be noted that locking clamps are provided on the inner side wall of the base 15 at both ends of the bidirectional lead screw 43. The locking clamps are existing technology and will not be described in detail in this application. The locking clamps are provided with locking jaws, which can mechanically lock the bidirectional lead screw 43 to prevent it from rotating due to external environmental factors, thereby causing the rigid fixed state of the circuit breaker body 10 to loosen.

[0041] Furthermore, such as Figure 1 As shown, multiple sealing mesh plates 53 are fixed to both sides of the base 15 by bolts. The multiple sealing mesh plates 53 can block the gaps inside the base 15, preventing external insects and birds from nesting inside the device or foreign objects from entering, while improving the overall sealing and protection level of the structure.

[0042] Working principle: During the installation of the circuit breaker body 10, the connecting piece 16 is fixed to the lower end face of the circuit breaker body 10 with bolts, and the base 15 is fixed to the upper end face of the bracket 11. Then, the bracket 11 is fixed to a preset height on one side of the utility pole with the clamp 12. Figure 1 As shown, ropes are used to fix the pull ring structures at both ends of the circuit breaker body 10. The circuit breaker body 10 is then steadily lifted to directly above the base 15 using hoisting equipment. Subsequently, the output end of the hoisting equipment is controlled to slowly lower the circuit breaker body 10, allowing its docking piece 16 to be precisely embedded into the trapezoidal docking groove 17. At this time, the inclined guiding effect of the trapezoidal docking groove 17 causes the docking piece 16 to sink naturally. During the above process, the locking rollers 19, which are rotatably arranged on both sides of the docking piece 16, abut against their adjacent guide surfaces 58 under the arrangement of components such as the first rotating rod 20, and roll along their inclined direction and gradually embed themselves into the interior of the arc-shaped groove 18.

[0043] After embedding, the two levers 31 are rotated sequentially, causing the arc-shaped limiting hooks 29 to rotate to the outer surface above each snap-fit ​​roller 19. This, combined with the inner wall of the arc-shaped groove 18, forms a double limiting constraint, effectively preventing the snap-fit ​​rollers 19 from axially shifting or coming off. To further stabilize the circuit breaker body 10 radially, the second rotating disk is rotated synchronously, causing the bidirectional lead screw 43 to rotate. This causes the two limiting sliders 38 to move inward synchronously, pushing the abutment plate 57 vertically upward along the square hole 59 until its upper end face is tightly attached to the bottom surface of the mating part 16. During this process, the abutment plate 57 drives multiple first columnar protrusions 33 and other components on its upper end face to precisely embed into multiple pre-set columnar grooves 32 on the bottom surface of the mating part 16. At this point, rotating the first rotating disk 36 causes multiple gears 34 to drive multiple first columnar protrusions 33 to rotate synchronously, causing multiple limiting protrusions 55 to rotate and engage with adjacent sector grooves 54. After locking the connection between the mating part 16 and the abutment plate 57, the circuit breaker body 10 is rigidly constrained in the axial, radial, and vertical dimensions. Finally, rotating the second rotating disk in the opposite direction causes the bidirectional lead screw 43 to retract slightly, and the abutment plate 57 is slightly lowered by the arrangement of multiple second rotating rods and other components, forming a pre-tightening gap between the abutment plate 57 and the bottom surface of the mating part 16 to cope with slight thermal expansion and contraction caused by temperature changes, ensuring a dynamic balance between connection stability and stress release during long-term operation. By rotating the locking clamps at both ends of the bidirectional lead screw 43, the bidirectional lead screw 43 is mechanically locked to prevent accidental loosening caused by vibration or load fluctuations.

[0044] When disassembling the circuit breaker body 10, the locking clamps must first be unlocked. Then, the second rotating disk is rotated forward to slightly raise the bidirectional screw 43 and the abutment plate 57, eliminating the pre-tightening gap. Next, the first rotating disk 36 is rotated in the reverse direction to disengage the limiting protrusions 55 from the fan-shaped grooves 54, releasing the rotational lock between the abutment plate 57 and the mating part 16. Then, the two levers 31 are moved in the reverse direction to disengage the arc-shaped limiting hook 29 from the limiting position between it and the locking roller 19. Then, the eccentric disk 26 is rotated to engage the locking protrusions 25 with their adjacent locking grooves 27. At this time, the eccentric disk 26 provides support between the adjacent first rotating rod 20 and the rotating connecting part 21, increasing the distance between them and thus pushing the locking roller 19 out of its engagement with the arc-shaped groove 18. Finally, a vertical upward traction force is applied to the circuit breaker body 10 using hoisting equipment, allowing the circuit breaker body 10 to smoothly detach from the mounting base. The entire disassembly process is shock-free and without jamming.

[0045] Example 2: Based on Example 1, further examples are made, such as... Figure 9 , Figure 14 and Figure 15As shown, multiple top plates 45 are evenly arranged on both sides of the trapezoidal docking groove 17 at the lower end face of the docking member 16. Multiple through holes 44 are arranged below each top plate 45 at the upper end face of the base 15. A buffer plug 46 is slidably arranged inside each through hole 44. The buffer plug 46 is made of insulating rubber material to ensure a tight connection between it and the through hole 44, and also to form insulation protection for the electronic components above it. A limiting circular plate 47 is fixedly arranged at the upper end of each through hole 44 at the upper end face of the buffer plug 46. A pressure sensor 48 is connected between every two adjacent top plates 45 and limiting circular plates 47. The pressure sensor 48 is a common pressure sensor, which can upload the pressure change received by the output end to the cloud in real time.

[0046] When the circuit breaker body drives the base 15 and the docking piece 16 to complete the initial docking limit, each buffer plug 46 is driven by the top plate 45 and the limiting circular plate 47 to insert into the through hole 44 directly below it. When the buffer plug 46 is completely inserted into the through hole 44, the limiting circular plate 47 will abut against the end face of the upper end of the through hole 44 to form a limit. At this time, if the docking piece 16 continues to move downward, it will drive the top plate 45 to squeeze the detection end of the pressure sensor 48. In this way, the pressure received by the sensing end of the pressure sensor 48 can reflect the pressure of the base 15 and the docking piece 16. The clamping force between the docking parts 16 can be controlled by rotating the second rotating disk. At the same time, the installation firmness of the circuit breaker body 10 can be monitored in real time by the pressure value changes of multiple pressure sensors 48. When the metal components fixing the circuit breaker body 10 become loose due to external environmental corrosion, the pressure at the output terminals of multiple pressure sensors 48 will change. When the pressure value is less than the safety warning range, the alarm device will notify the maintenance personnel to carry out timely maintenance.

[0047] Furthermore, such as Figure 9 , Figure 14 and Figure 15As shown, each pressure sensor 48 is sealed between the limiting circular plate 47 and the top plate 45 with an airbag 49. Each buffer plug 46 has an air storage chamber 50 inside. Each airbag 49 has multiple vent holes 51 on the upper surface of the limiting circular plate 47 that communicate with the air storage chamber 50. When the top plate 45 moves down with the docking piece 16 to compress the pressure sensor 48, the airbag 49 is compressed and deformed synchronously. At this time, the air inside the airbag 49 is compressed into the air storage chamber 50 through the multiple vent holes 51. Inside the gas chamber 50, the increased air pressure will compress the outer wall of the buffer plug 46, thereby creating a secondary limit on the buffer plug 46 inside the through hole 44. This significantly improves the stable limiting ability of the buffer plug 46 on one end of the pressure sensor 48. At the same time, under the buffering effect of gas compression inside multiple airbags 49, it also plays a buffering role when the base 15 and the docking part 16 are docked, reducing the docking impact between the base 15 and the docking part 16 to a certain extent, thus forming a buffer protection for the circuit breaker body 10 during installation.

[0048] Finally, it should be noted that the present invention, a convenient pole-mounted circuit breaker, needs to protect the various mechanical structures and related motion logic in this solution. Therefore, it does not elaborate on the various sensors, detectors, and driving components required for the actual operation of the specific mechanical structures. However, for those skilled in the art, various control systems and electrical connection methods, including various electrical components and driving components, can be accomplished using conventional technical means. As long as the beneficial effects or the specific actions during the above-mentioned work can be achieved, they can be implemented. This solution does not impose too many restrictions.

[0049] Furthermore, the pressure sensor, bidirectional lead screw, spring, and gears of the convenient-installation pole-mounted circuit breaker in this invention are all commercially available. Technical personnel in the industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative effort from those skilled in the art.

[0050] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0051] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A convenient pole-mounted circuit breaker, comprising a circuit breaker body (10), a bracket (11) disposed below the circuit breaker body (10), a base plate (14) fixedly disposed on the upper end surface of the bracket (11), and a base (15) fixedly disposed on the upper end surface of the base plate (14), characterized in that, A connecting piece (16) is fixedly provided on the lower end face of the circuit breaker body (10). A trapezoidal connecting groove (17) is provided on the upper end face of the base (15) below the connecting piece (16). The connecting piece (16) and the trapezoidal connecting groove (17) cooperate with each other and are provided with multiple guide slopes. Arc grooves (18) are provided on both sides of the trapezoidal connecting groove (17) on the side wall of the base (15). A snap-fit ​​roller (1) is slidably snapped into the interior of each arc groove (18). 9) An elastic tensioning assembly is arranged between the snap-fit ​​roller (19) and the docking piece (16). When the docking piece (16) and the trapezoidal docking groove (17) dock with each other, the snap-fit ​​rollers (19) on both sides slide synchronously against the surface of the base (15) and are embedded into the arc groove (18) at the end of the docking to form a pre-fixed structure. The trapezoidal docking groove (17) and the docking piece (16) are also provided with a synchronous locking structure. The synchronous locking structure completes the locking and fixing of the circuit breaker body (10).

2. The convenient-installation pole-mounted circuit breaker according to claim 1, characterized in that, The elastic tensioning assembly includes first rotating rods (20) rotatably disposed on both sides of the snap-fit ​​roller (19) and on the lower end face of the docking member (16). Each first rotating rod (20) is elastically slidably disposed with a rotating connector (21) at one end facing the snap-fit ​​roller (19). The rotating connector (21) is rotatably connected to the snap-fit ​​roller (19). Each first rotating rod (20) is rotatably disposed with an elastic telescopic rod (52) between it and the lower end face of the docking member (16).

3. The conveniently installed pole-mounted circuit breaker according to claim 1, characterized in that, Each of the arc-shaped grooves (18) has an arc-shaped rotating groove (28) on its inner circular surface. Each of the arc-shaped rotating grooves (28) has an arc-shaped limiting hook (29) rotatably installed inside. When the arc-shaped limiting hook (29) rotates outward, its inner wall surface presses against the outer surface of the snap-fit ​​roller (19).

4. A conveniently installed pole-mounted circuit breaker according to claim 2, characterized in that, The first rotating rod (20) has a first slider (22) slidably disposed inside. Each first slider (22) has a plurality of connecting rods (23) fixedly disposed on one side. One end of each connecting rod (23) is fixedly connected to its adjacent rotating connecting member (21). Each connecting rod (23) has a spring (24) disposed outside between the first rotating rod (20) and the first slider (22).

5. A convenient pole-mounted circuit breaker according to claim 1, characterized in that, The synchronous locking structure includes a square hole (59) disposed on the bottom surface of the trapezoidal docking groove (17). An abutment plate (57) is slidably disposed inside the square hole (59). A plurality of first columnar protrusions (33) are rotatably disposed on the upper end surface of the abutment plate (57). A columnar groove (32) is disposed above the lower end surface of the docking member (16) above each first columnar protrusion (33). Each first columnar protrusion (33) is slidably connected to the columnar groove (32) directly above it. A plurality of limiting protrusions (55) are disposed on the outer circular surface of each first columnar protrusion (33). A limiting groove (35) is disposed above the inner circular surface of the columnar groove (32) above each limiting protrusion (55). Each limiting protrusion (55) is engaged with the limiting groove (35) directly above it.

6. A conveniently installed pole-mounted circuit breaker according to claim 5, characterized in that, The synchronous locking structure also includes multiple gears (34) rotatably disposed on the end face of the abutment plate (57). The multiple gears (34) rotate synchronously. The first columnar protrusion (33) is connected to the gear (34). The inner sidewall of the limiting groove (35) is provided with a fan-shaped groove (54). When the multiple first columnar protrusions (33) are located in the limiting groove (35), they rotate synchronously and are embedded in the fan-shaped groove (54).

7. A conveniently installed pole-mounted circuit breaker according to claim 5, characterized in that, The bottom sides of the abutment plate (57) are provided with multiple second rotating rods (40). Below the second rotating rods (40), on the inner bottom surface of the base (15), there are two symmetrical first limiting elongated holes (37). The first limiting elongated holes (37) are slidably provided with limiting sliders (38). The two limiting sliders (38) slide synchronously and are fixedly provided with connecting crossbars (56). The connecting crossbars (56) are rotatably connected to the other end of the second rotating rods (40).

8. A conveniently installed pole-mounted circuit breaker according to claim 1, characterized in that, Multiple top plates (45) are evenly arranged on both sides of the trapezoidal docking groove (17) on the lower end face of the docking member (16). Multiple through holes (44) are provided on the upper end face of the base (15) below each top plate (45). A buffer plug (46) is slidably arranged inside each through hole (44). A limiting circular plate (47) is fixedly arranged on the upper end face of the buffer plug (46) at the upper port of each through hole (44). A pressure sensor (48) is connected between every two adjacent top plates (45) and limiting circular plates (47).

9. A conveniently installed pole-mounted circuit breaker according to claim 8, characterized in that, Each pressure sensor (48) is provided with an airbag (49) sealed between the limiting circular plate (47) and the top plate (45). Each buffer plug (46) is provided with an air storage chamber (50). Each airbag (49) is provided with multiple vent holes (51) communicating with the air storage chamber (50) on the upper surface of the limiting circular plate (47).

10. A conveniently installed pole-mounted circuit breaker according to claim 8, characterized in that, A guide surface (58) is provided on the side wall of the base (15) above the arc groove (18). After the snap-fit ​​roller (19) rolls against the guide surface (58), it is embedded in the arc groove (18).

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