Modular pole-mounted circuit breaker

Abstract

This invention discloses a modular pole-mounted circuit breaker, specifically relating to the field of vacuum switch technology. It includes a circuit breaker body and connecting components. A mounting box is fixed to the connecting components, and a fixed plate is fixed to the mounting box. A movable plate is slidably mounted on the fixed plate. Limiting components adapted to the movable plate are fixed to both sides of the fixed plate. A second movable plate slides on the first movable plate, and limiting components adapted to the second movable plate are fixed to both sides of the first movable plate. A set of elastic components is fixed to the second movable plate, and a movable plate is fixed to multiple elastic components. The modular pole-mounted circuit breaker of this invention, through a combined mechanism consisting of a sliding platform composed of the first and second movable plates, a vertical guiding mechanism composed of elastic components and a movable plate, and a ball joint formed by a ball seat and a ball rod, can completely isolate the forced deformation of the modular pole-mounted circuit breaker caused by the elastic deflection of the utility pole.

Description

Technical Field

[0001] This invention relates to the field of vacuum switch technology, and more particularly to a modular pole-mounted circuit breaker. Background Technology

[0002] Modular pole-mounted circuit breakers are mainly used in 10kV distribution network overhead lines and are one of the core devices in distribution automation systems, undertaking key functions such as power distribution, line protection, and fault isolation. With the deepening of smart grid construction, higher technical requirements have been placed on pole-mounted circuit breakers, and their development focuses on two core areas: deep integration of primary and secondary equipment and structural modularization.

[0003] In existing technologies, modular circuit breakers are rigidly fixed to poles with supports. Under the action of external wind loads and conductor tension, elastic flexing occurs (elastic flexing refers to bending deformation under external load, which can completely return to its original shape after the external load is removed). The top of the pole will be displaced, resulting in lateral displacement, vertical displacement, and relative torsion between the mounting bracket and the equipment body. For compact modular circuit breakers, this torsional stress will be directly transmitted to the mating flange of the pole and the mechanism box, causing local crushing of the sealing ring, and to the plug-in interface between the control module and the mechanism box, resulting in fretting wear of the connector contacts and increased contact resistance. Summary of the Invention

[0004] The purpose of this invention is to address the problems of rigid supports directly transmitting the elastic flexural deformation of utility poles to circuit breakers, leading to the crushing of the sealing ring at the docking flange due to local overcompression, and the increased contact resistance of plug-in interface connectors due to fretting wear. Therefore, a modular pole-mounted circuit breaker is proposed.

[0005] To achieve the above objectives, the present invention employs the following techniques: A modular pole-mounted circuit breaker includes a circuit breaker body and a connector. A mounting box is fixed to the connector, and a fixed plate is fixed to the mounting box. A movable plate slidably mounts on the fixed plate. Limiting components adapted to the movable plate 1 are fixed on both sides of the fixed plate. A movable plate 2 slides on the movable plate 1. Limiting components adapted to the movable plate 2 are fixed on both sides of the movable plate 1. A set of elastic components is fixed on the movable plate 2. A movable plate is fixed together on multiple elastic components. Elastic damping components are fixed at the four corners of one side of the movable plate. A ball socket and a limiting ring are fixed in the middle of the movable plate. A mounting component is provided on one side of the ball socket. The mounting component includes a ball joint adapted to a ball socket, and an adjustment assembly is fixed to one side of the ball joint, the adjustment assembly being connected to the circuit breaker body; The first and second movable plates can slide in the horizontal direction, and the movable plate and elastic component can move in the vertical direction. By adjusting the component and the ball socket, the movable plate can be rotated, thereby keeping the circuit breaker body in a vertical state.

[0006] As a further description of a modular pole-mounted circuit breaker of the above technology: The limiting component includes two symmetrical fixing blocks, each of which is fixed with a U-shaped plate. An installation tube is fixed between the two U-shaped plates, and two symmetrical limiting grooves are opened on one side of the installation tube.

[0007] As a further description of a modular pole-mounted circuit breaker of the above technology: Both U-shaped plates have sliders slidably connected to their inner cavities. Each slider is fixed with a connecting spring to a fixed block on the same side. Each slider has a sliding rod that slides within the mounting tube cavity. The mounting tube cavity has two dampers that are adapted to the sliding rods.

[0008] As a further description of a modular pole-mounted circuit breaker of the above technology: The elastic component includes a straight plate fixed to the movable plate 2, a linear bearing fixed on the straight plate, a guide rod movably installed in the inner cavity of the linear bearing, and a return spring sleeved on the outside of the guide rod fixed between the straight plate and the movable plate.

[0009] As a further description of a modular pole-mounted circuit breaker of the above technology: The adjustment assembly includes a mounting plate, on which a baffle and two symmetrical mounting blocks are fixed. Two symmetrical brackets slide on the baffle and mounting blocks, and two symmetrical limiting rods are fixed on each bracket.

[0010] As a further description of a modular pole-mounted circuit breaker of the above technology: The mounting plate is slidably mounted with a symmetrical drive plate one and a drive plate two. The drive plate one has two drive grooves one that are adapted to the limit rod, and the drive plate two has two drive grooves two that are adapted to the limit rod. Drive components for driving the drive plate one and the drive plate two are fixed on both sides of the mounting plate.

[0011] As a further description of a modular pole-mounted circuit breaker of the above technology: The drive assembly includes a fixed box that is fixedly connected to the adjustment assembly. A worm gear is rotatably mounted inside the fixed box. A handwheel is fixed to one side of the worm gear. A worm wheel that meshes with the worm gear is rotatably mounted inside the fixed box.

[0012] As a further description of a modular pole-mounted circuit breaker of the above technology: A screw is fixed on the worm gear, and the screw is adapted to drive plate one and drive plate two.

[0013] In summary, due to the adoption of the above-mentioned technology in this modular pole-mounted circuit breaker, the beneficial effects of this invention are: 1. This device, through a combination of a sliding platform consisting of movable plate one and movable plate two, a vertical guiding mechanism consisting of an elastic component and a movable plate, and a ball joint formed by a ball socket and a ball rod, can completely isolate the forced deformation of the modular pole-mounted circuit breaker caused by the elastic deflection of the utility pole. This ensures that the flange on the circuit breaker body remains horizontal and is not subject to additional bending moment, the compression of the sealing ring is stable at the design value, high-frequency micro-vibrations are absorbed by the limit ring and elastic damping component, the relative displacement change between the control module and the mechanism box is small, and the fretting wear of the connector contacts is negligible. The movable plates 1 and 2 can absorb displacement in any direction on the horizontal plane. When movable plates 1 and 2 slide, the circuit breaker body remains in place. Vertical displacement can be absorbed by the movable plate and elastic component. The guide rod slides along the linear bearing. The return spring is compressed or extended, and the force change is minimal. Angular displacement can be absorbed by the ball socket and ball rod. The ball rod rotates in the ball socket, and the equipment remains vertical.

[0014] 2. This device uses a limiting component to cooperate with moving plate one and moving plate two. On the one hand, it can reset moving plate one and moving plate two after sliding. On the other hand, it can prevent the circuit breaker body from shaking due to wind vibration caused by elastic flexure, and prevent the device from resonating or continuously oscillating. A suitable limiting component is installed on the first or second movable plate. When absorbing the micro displacement caused by elastic flexure, the first and second movable plates can overcome the resistance of the connecting spring on one side of the moving direction and the tension of the connecting spring on the other side. The connecting spring only plays the role of returning to position and does not hinder the displacement. Under the action of wind vibration, the circuit breaker body may shake. When the first or second sliding plate slides to one side, it is necessary to overcome the elastic force provided by the connecting spring on the same side, the tension provided by the connecting spring on the other side, and the resistance brought by the damper adapted to the sliding rod. In this way, the displacement amplitude of the circuit breaker body on the horizontal plane under the action of wind load can be reduced, and the elastic flexure can be prevented from causing the circuit breaker body to shake under wind vibration.

[0015] 3. This device, through its adjustable components, can adapt to mounting holes of different specifications of modular circuit breakers, thus avoiding the need for on-site drilling or the use of conversion brackets when the hole spacing is insufficient. By driving the drive component on one side, the drive plate two is moved, causing the limiting rod on the bracket to slide in the inclined section of the drive groove two, increasing the distance between the two brackets. Driving the drive component on the other side moves the drive plate one, causing the limiting rod on the bracket to slide in the inclined section of the drive groove one, further increasing the distance between the two brackets. By driving the drive plate two or drive plate one through the drive components on both sides, the two brackets can be adjusted independently or in combination, improving the adaptability of the device. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the present invention is shown; Figure 2 A cross-sectional view of the overall structure of the present invention is shown; Figure 3 A partial structural schematic diagram of the present invention is shown; Figure 4 A cross-sectional view of the limiting ring of the present invention is shown; Figure 5 A cross-sectional view of the limiting component structure of the present invention is shown; Figure 6 A schematic diagram of the elastic component structure of the present invention is shown; Figure 7 A schematic diagram of the limiting component structure of the present invention is shown; Figure 8 A schematic diagram of the mounting component structure of the present invention is shown; Figure 9 An exploded view of the mounting component structure of the present invention is shown; Figure 10 A schematic diagram of the drive component structure of the present invention is shown; Figure 11 A schematic diagram of the moving state of the bracket of the present invention is shown. Figure 1 ; Figure 12 A schematic diagram of the moving state of the bracket of the present invention is shown. Figure 2 .

[0017] Legend: 10. Circuit breaker body; 11. Connecting parts; 12. Mounting box; 13. Fixing plate; 14. Moving plate one; 15. Moving plate two; 16. Movable plate; 17. Ball socket seat; 18. Elastic damping assembly; 19. Limit ring; 20. Limiting component; 21. Fixing block; 22. U-shaped plate; 23. Sliding rod; 24. Mounting tube; 25. Limiting groove; 26. Slider; 27. Connecting spring; 28. Damper; 30. Elastic component; 31. Straight plate; 32. Linear bearing; 33. Guide rod; 34. Return spring; 40. Mounting component; 41. Adjustment assembly; 411. Mounting plate; 412. Mounting block; 413. Baffle; 414. Bracket; 415. Drive plate one; 416. Drive slot one; 417. Drive plate two; 418. Drive slot two; 419. Limiting rod; 42. Cue stick; 43. Drive assembly; 431. Fixing box; 432. Worm gear; 433. Worm wheel; 434. Handwheel; 435. Screw. Detailed Implementation

[0018] The following will describe a modular pole-mounted circuit breaker according to the embodiments of the present invention clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 As shown, a modular pole-mounted circuit breaker includes a circuit breaker body 10 and a connector 11. The circuit breaker body 10 is a modular circuit breaker, and the connector 11 is used to connect to a utility pole. A mounting box 12 is fixed on the connector 11.

[0020] like Figure 2 and Figure 3 As shown, a fixing plate 13 is fixed on the mounting box 12. The fixing plate 13 is fixed to the top of the mounting box 12. A movable plate 14 is slidably mounted on the fixing plate 13. Limiting components 20 adapted to the movable plate 14 are fixed on both sides of the fixing plate 13. The limiting components 20 are used to provide buffering and reset capability for the movable plate 14. A movable plate 25 is slidably mounted on the movable plate 14. Limiting components 20 adapted to the movable plate 25 are fixed on both sides of the movable plate 14. The limiting components 20 are used to provide buffering for the movable plate 14 and the movable plate 25. like Figure 3 As shown, the first movable plate 14 moves on the fixed plate 13 in the direction of the horizontal plane X-axis, and the second movable plate 15 moves on the first movable plate 14 in the direction of the horizontal plane Y-axis. Together with the provided limiting component 20, it can compensate for the lateral misalignment caused by the bending of the rod and absorb the displacement in the horizontal plane, thereby preventing the circuit breaker body 10 from moving in the horizontal plane. Together with the buffering and reset functions provided by the limiting component 20, it can suppress the resonance of the circuit breaker body 10. A set of four elastic components 30 are fixed on the second movable plate 15. The four elastic components 30 are located at the four corners of one side of the second movable plate 15. The movable plate 16 is fixed on the multiple elastic components 30. The elastic components 30 absorb Z-direction displacement and bear the weight of the equipment. They also absorb the small vertical displacement caused by the deflection of the rod. The movable plate 16 provides constant support force through the elastic components 30 to balance the weight of the equipment, thus preventing the weight from being borne entirely by the first movable plate 14 and the second movable plate 15. Elastic damping components 18 are fixed at all four corners of one side of the movable plate 16. The elastic damping components 18 include elastic damping units and hemispherical heads. A ball socket seat 17 and a limiting ring 19 are fixed in the middle of the movable plate 16. The limiting ring 19 is a polyurethane buffer block. An installation component 40 is provided on one side of the ball socket seat 17. The installation component 40 cooperates with the ball socket seat 17 and is connected to the mounting bracket on the circuit breaker body 10.

[0021] like Figure 4 As shown, the mounting component 40 includes a ball rod 42 adapted to the ball socket 17. The ball socket 17 and the ball rod 42 form a ball joint seat. An adjustment component 41 is fixed on one side of the ball rod 42. The adjustment component 41 is in contact with the elastic damping component 18. When the circuit breaker starts to swing, the mechanical energy is converted into heat energy through the movement of the elastic damping component 18, thereby attenuating the swing amplitude. Within the normal swing range, the limit ring 19 does not contact the adjustment component 41, and the elastic damping component 18 works independently. When the swing amplitude exceeds the set value, the limit ring 19 begins to contact the adjustment component 41 and generates an elastic restoring force. The stiffness gradually increases to prevent further swing to the dangerous range. The adjustment component 41 is connected to the circuit breaker body 10. The combination of the elastic damping component 18 and the limiting ring 19 can prevent the circuit breaker body 10 from swinging during wind.

[0022] The first movable plate 14 and the second movable plate 15 can slide in the horizontal direction. The first movable plate 14 and the second movable plate 15 form a sliding platform that can absorb movement in any direction in the horizontal plane, keep the center of gravity of the equipment as vertical as possible, and avoid lateral force transmission to the pole flange. The movable plate 16 and the elastic component 30 can move in the vertical direction. The movable plate 16 and the elastic component 30 absorb the height change caused by the bending of the rod and automatically reset. The movable plate 16 can be rotated by the cooperation of the adjusting component 41 and the ball socket 17. The ball socket 17 and the mounting component 40 cooperate to absorb the angle deviation, allowing the movable plate 16 to tilt at an angle relative to the horizontal plane, so that the equipment remains naturally vertical. Through the aforementioned sliding platform, movable plate 16, elastic component 30, ball socket seat 17, and mounting component 40, the circuit breaker body 10 as a whole is not affected by the elastic deflection of the rod. Since the flange of the circuit breaker body 10 always remains horizontal and is not subject to additional bending moment, the compression of the sealing ring is stable at the design value, high-frequency micro-vibrations are absorbed by the limit ring 19 and elastic damping component 18, the relative displacement between the control module and the mechanism box is reduced, and the contact resistance change rate of the connector is reduced.

[0023] like Figures 5-7 As shown, the limiting component 20 includes two symmetrical fixing blocks 21. The fixing block 21 in the limiting component 20 is fixedly connected to the fixing plate 13. The fixing block 21 in the limiting component 20 on the moving plate 14 is fixedly connected to the moving plate 14. Each fixing block 21 is fixed with a U-shaped plate 22. An installation tube 24 is fixed between the two U-shaped plates 22. Two symmetrical limiting grooves 25 are opened on one side of the installation tube 24. The depth of the limiting grooves 25 is used to limit the movement range of the moving plate 14 or the moving plate 25. Both U-shaped plates 22 have sliders 26 slidably connected to their inner cavities. The two sliders 26 in the upper limit assembly 20 of the fixed plate 13 are fixedly connected to both sides of the moving plate 14. The two sliders 26 in the upper limit assembly 20 of the moving plate 14 are fixedly connected to both sides of the moving plate 25. The sliders 26 can also slide in the inner cavity of the limit groove 25 on the same side. Each slider 26 is fixed with a connecting spring 27 between it and the fixed block 21 on the same side. The connecting spring 27 is a very low stiffness spring, which only serves to return the position and does not hinder the displacement. Each slider 26 is fixed with a sliding rod 23 that slides in the inner cavity of the mounting tube 24. The inner cavity of the mounting tube 24 is fixed with two dampers 28 that are adapted to the sliding rod 23. When the movable plate 14 moves to one side, it needs to overcome the elastic force provided by the connecting spring 27 on the same side, the tension provided by the connecting spring 27 on the other side, and the resistance brought by the damper 28 adapted to the sliding rod 23. Similarly, the force experienced by the movable plate 15 when it slides is the same as that of the movable plate 14. This can reduce the displacement amplitude of the circuit breaker body 10 on the horizontal plane under wind load, reduce the impact force of the circuit breaker body 10, and limit the displacement of the circuit breaker body 10 to prevent the circuit breaker from colliding with other equipment.

[0024] like Figure 6As shown, the elastic component 30 includes a straight plate 31 fixed on the movable plate 15, a linear bearing 32 fixed on the straight plate 31, the linear bearing 32 being embedded in the straight plate 31, a guide rod 33 being movably installed in the inner cavity of the linear bearing 32, a limit ring being installed on the guide rod 33 to limit the range of movement of the guide rod 33 and prevent the guide rod 33 from disengaging, a return spring 34 being fixed between the straight plate 31 and the movable plate 16 and sleeved on the outside of the guide rod 33, the two ends of the return spring 34 being fixedly connected to the straight plate 31 and the movable plate 16 respectively, the return spring 34 being a constant force spring, providing an upward pulling force almost equal to the weight of the equipment, realizing "gravity cancellation", and the small vertical displacement only needs to overcome the friction of the linear bearing 32.

[0025] When installing pole-mounted circuit breakers, they need to be fixed to the crossarm of the utility pole using a bottom mounting bracket. The standard crossarm hole spacing varies between different power grid companies and different lines, with common specifications including 280mm, 300mm, and 320mm. The mounting holes of existing modular circuit breakers are mostly fixed in spacing. If the hole spacing does not match on site, it is necessary to temporarily re-drill holes on the crossarm or use a conversion bracket. Re-drilling holes will damage the hot-dip galvanized layer of the crossarm and accelerate corrosion. Using a conversion bracket increases the installation height and torque, reducing the overall stability.

[0026] like Figure 8 and Figure 9 As shown, the adjustment assembly 41 includes a mounting plate 411, which is fixedly connected to the ball rod 42. A baffle 413 and two symmetrical mounting blocks 412 are fixed on the mounting plate 411. The two mounting blocks 412 are located on both sides of the bottom end face of the mounting plate 411, and the baffle 413 is located in the middle of the bottom end face of the mounting plate 411. Two symmetrical brackets 414 slide on the baffle 413 and the mounting blocks 412. The brackets 414 are provided with connection holes that are adapted to the mounting holes of the circuit breaker body 10. Two symmetrical limiting rods 419 are fixed on each bracket 414. Symmetrical drive plates 415 and 417 are slidably mounted on the mounting plate 411. A baffle 413 is located between the drive plates 415 and 417 and can limit the movement distance of the drive plates 415 and 417. The drive plate 415 has two drive grooves 416 that are adapted to the limit rod 419. The drive groove 416 includes a straight section and an inclined section. In the initial state, the limit rod 419 is located at one end of the straight section of the drive groove 416. The drive plate 417 has two drive grooves 418 that are adapted to the limit rod 419. The drive groove 418 includes an inclined section and a straight section. In the initial state, the limit rod 419 is located at one end of the inclined section of the drive groove 418. Drive assemblies 43 for driving the drive plates 415 and 417 are fixed on both sides of the mounting plate 411. Driven by the drive assembly 43, drive plate 415 and drive plate 417 slide. In the initial state, the connection holes on the two brackets 414 can mate with the 280mm mounting holes of the circuit breaker body 10 for installation. Figure 11 As shown, if the mounting hole on the circuit breaker body 10 is 300mm, the drive plate 417 is slid by the drive assembly 43, so that the limit rod 419 slides in the inclined section of the drive groove 418, and the two brackets 414 move to both sides so that the brackets 414 can fit the 300mm mounting hole. At this time, the limit rod 419 in the inner cavity of the drive groove 416 slides from one end of the straight section of the drive groove 416 to one end of the inclined section. like Figure 12 As shown, if the mounting hole on the circuit breaker body 10 is 320mm, the drive plate 415 moves on the basis of the movement of the drive plate 417, so that the limit rod 419 slides in the inclined section of the drive groove 416, and the two brackets 414 move to both sides so that the brackets 414 can fit the 320mm mounting hole. At this time, the limit rod 419 in the inner cavity of the drive groove 418 slides in the straight section of the drive groove 418. Through the drive slot 418 on the second drive plate 417 and the drive slot 416 on the first drive plate 415, the device can adjust the distance between the two supports 414 individually or in combination, thereby improving the adaptability of the device. like Figure 10 As shown, the drive assembly 43 includes a fixed box 431 fixedly connected to the adjustment assembly 41. A worm gear 432 is rotatably mounted inside the fixed box 431. One end of the worm gear 432 passes through the inner wall of the fixed box 431 and extends to the outside of the fixed box 431. A handwheel 434 is fixed to one side of the worm gear 432. A worm wheel 433 that meshes with the worm gear 432 is rotatably mounted inside the fixed box 431. By rotating the handwheel 434, the worm gear 432 drives the worm wheel 433 to rotate. A screw 435 is fixed on the worm gear 433. The screw 435 is installed at the center of the worm gear 433. When the worm gear 433 rotates, it drives the screw 435 to rotate. The screw 435 is adapted to drive plate 1 415 and drive plate 2 417. The screw 435 passes through drive plate 1 415 and drive plate 2 417 and is threadedly connected to drive plate 1 415 and drive plate 2 417, so that the rotating screw 435 can drive drive plate 1 415 and drive plate 2 417 to move.

[0027] Working principle: During use, the circuit breaker body 10 is first installed in conjunction with the mounting bracket and the adjustment component 41. Through the cooperation of the ball rod 42 and the ball socket 17, the circuit breaker body 10 is "suspended" on the ball socket 17. The circuit breaker body 10 is kept stable by the overall weight of the circuit breaker body 10. When elastic deflection occurs at the top of the pole, the lateral displacement is transmitted to the moving plate 14 and the moving plate 2 15 through the connector 11. The moving plate 14 and the moving plate 2 15 move in any direction on the horizontal plane. The elastic component 30 and the movable plate 16 absorb the small vertical displacement caused by the deflection of the pole. The ball socket 17 and the ball rod 42 cooperate to absorb the angular displacement caused by the deflection of the pole, so that the circuit breaker always remains vertically downward, avoiding the bias pressure of the flange sealing ring. This can prevent the circuit breaker from squeezing the docking flange between the pole and the mechanism box due to tilting or torsion, and reduce the wear of the connector contacts in the plug-in interface between the control module and the mechanism box. Under the action of elastic flexure, the connector 11 tilts or twists, causing the movable plate 14 on the fixed plate 13 and the movable plate 25 on the movable plate 14 to slide. When the movable plate 14 or the movable plate 25 slides to one side, it needs to overcome the elastic force provided by the connecting spring 27 on the same side, the tension provided by the connecting spring 27 on the other side, and the resistance brought by the damper 28 adapted to the sliding rod 23. In this way, the displacement amplitude of the circuit breaker body 10 on the horizontal plane under the action of wind load can be reduced, and the elastic flexure can be prevented from causing the circuit breaker body 10 to shake under wind vibration, and resonance or continuous oscillation can be avoided. At the same time, the connecting spring 27 and the damper 28 reset the movable plate 14 or the movable plate 25 after elastic flexure. Next, the guide rod 33 rises or falls in the direction of the elastic deflection of the rod top in the inner cavity of the linear bearing 32, and provides a constant support force to the movable plate 16 through the return spring 34 to balance the weight of the equipment, so as to avoid the weight being borne entirely by the movable plate 2 15 and the movable plate 14. The ball rod 42 can rotate a certain angle in the inner cavity of the ball socket 17. Under the action of elastic flexure, the movable plate 16 tilts, absorbing the angular displacement tilt caused by the flexure of the rod, so that the circuit breaker always remains vertically downward. In order to accommodate the mounting holes of circuit breakers of different specifications, this device is equipped with an adjustment component 41 that is connected to the mounting bracket on the circuit breaker body 10. In the initial state, when neither drive board 415 nor drive board 417 has moved, the device is adapted to the 280mm circuit breaker mounting hole. Then, as... Figure 11 As shown, if a 300mm mounting hole is to be installed, the drive plate 417 is slid by the drive assembly 43, so that the limit rod 419 slides in the inclined section of the drive groove 418, and the two brackets 414 move to both sides so that the brackets 414 can fit the 300mm mounting hole. At this time, the limit rod 419 in the inner cavity of the drive groove 416 slides from one end of the straight section of the drive groove 416 to one end of the inclined section. like Figure 12As shown, if the mounting hole on the circuit breaker body 10 is 320mm, the drive plate 415 moves on the basis of the movement of the drive plate 2 417, so that the limit rod 419 slides in the inclined section of the drive groove 416, and the two brackets 414 move to both sides so that the brackets 414 can fit the 320mm mounting hole. At this time, the limit rod 419 in the inner cavity of the drive groove 2 418 slides in the straight section of the drive groove 2 418.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the modular pole-mounted circuit breaker and its inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A modular pole-mounted circuit breaker, comprising a circuit breaker body (10) and a connector (11), characterized in that, A mounting box (12) is fixed on the connector (11), a fixing plate (13) is fixed on the mounting box (12), a movable plate (14) is slidably mounted on the fixing plate (13), a limiting component (20) adapted to the movable plate (14) is fixed on both sides of the fixing plate (13), a movable plate (15) is slidably mounted on the movable plate (14), a limiting component (20) adapted to the movable plate (15) is fixed on both sides of the movable plate (14), a set of elastic components (30) is fixed on the movable plate (15), a movable plate (16) is fixed on multiple elastic components (30), an elastic damping component (18) is fixed on each of the four corners of one side of the movable plate (16), a ball socket seat (17) and a limiting ring (19) are fixed in the middle of the movable plate (16), and a mounting component (40) is provided on one side of the ball socket seat (17). The mounting component (40) includes a ball rod (42) adapted to the ball socket (17), and an adjustment component (41) is fixed on one side of the ball rod (42). The adjustment component (41) is connected to the circuit breaker body (10). The first movable plate (14) and the second movable plate (15) can slide in the horizontal direction, and the movable plate (16) and the elastic component (30) can move in the vertical direction. The movable plate (16) can be rotated by the adjustment component (41) and the ball socket (17), so that the circuit breaker body (10) is in a vertical state.

2. A modular pole-mounted circuit breaker according to claim 1, characterized in that, The limiting component (20) includes two symmetrical fixing blocks (21), each fixing block (21) is fixed with a U-shaped plate (22), and an installation tube (24) is fixed between the two U-shaped plates (22). Two symmetrical limiting grooves (25) are opened on one side of the installation tube (24).

3. A modular pole-mounted circuit breaker according to claim 2, characterized in that, Both U-shaped plates (22) are slidably connected to sliders (26), and each slider (26) is fixed with a connecting spring (27) between it and the fixed block (21) on the same side. Each slider (26) is fixed with a sliding rod (23) that slides in the inner cavity of the mounting tube (24). The inner cavity of the mounting tube (24) is fixed with two dampers (28) that are adapted to the sliding rods (23).

4. A modular pole-mounted circuit breaker according to claim 1, characterized in that, The elastic component (30) includes a straight plate (31) fixed on the movable plate (15), a linear bearing (32) fixed on the straight plate (31), a guide rod (33) movably installed in the inner cavity of the linear bearing (32), and a return spring (34) sleeved on the outside of the guide rod (33) fixed between the straight plate (31) and the movable plate (16).

5. A modular pole-mounted circuit breaker according to claim 1, characterized in that, The adjustment assembly (41) includes a mounting plate (411), on which a baffle (413) and two symmetrical mounting blocks (412) are fixed. Two symmetrical brackets (414) slide on the baffle (413) and the mounting blocks (412), and two symmetrical limiting rods (419) are fixed on each bracket (414).

6. A modular pole-mounted circuit breaker according to claim 5, characterized in that, The mounting plate (411) is slidably mounted with a symmetrical drive plate one (415) and a drive plate two (417). The drive plate one (415) has two drive grooves one (416) adapted to the limit rod (419), and the drive plate two (417) has two drive grooves two (418) adapted to the limit rod (419). The mounting plate (411) is fixed with drive components (43) for driving the drive plate one (415) and the drive plate two (417) on both sides.

7. A modular pole-mounted circuit breaker according to claim 6, characterized in that, The drive assembly (43) includes a fixed box (431) fixedly connected to the adjustment assembly (41). A worm gear (432) is rotatably mounted inside the fixed box (431). A handwheel (434) is fixed on one side of the worm gear (432). A worm wheel (433) meshing with the worm gear (432) is rotatably mounted inside the fixed box (431).

8. A modular pole-mounted circuit breaker according to claim 7, characterized in that, A screw (435) is fixed on the worm gear (433), and the screw (435) is adapted to drive plate one (415) and drive plate two (417).

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