Spring operating mechanism and method for circuit breaker

Abstract

The application discloses a spring operating mechanism and method for a circuit breaker, and belongs to the technical field of circuit breakers, which comprises a clamp plate type frame, an energy storage to position clutch, a closing holding and a manual closing soft interlocking device, the clamp plate type frame is fixedly connected by opposite first and second side plates through a supporting piece; an energy storage motor of an energy storage transmission device is connected with an energy storage shaft through a transmission assembly, a cam is arranged on the shaft, and an energy storage holding buckle is arranged; the energy storage to position clutch device is a one-way clutch assembly connecting the transmission assembly and the energy storage shaft; the closing holding device comprises a hinged opening release assembly, a reset elastic piece and a linked output shaft; the manual closing soft interlocking device comprises a sliding manual operating assembly, a closing trigger piece and an interlocking assembly, and is matched with the energy storage holding buckle; the problems of the existing spring operating mechanism for the circuit breaker, such as the reliability, structure, cost or precision related defects of the energy storage clutch device, the manual closing mechanical interlocking, the closing holding structure and the modular mechanism cooperation are solved.

Description

Technical Field

[0001] This invention belongs to the field of circuit breakers, and specifically relates to a spring operating mechanism and method for circuit breakers. Background Technology

[0002] The working principle of the spring operating mechanism for the circuit breaker is as follows: the rotation of the energy storage motor drives the rotation of the energy storage shaft to complete the energy storage of the closing spring. After the energy storage is in place, the closing spring maintains the energy storage state through the fastening structure, while cutting off the power transmission between the energy storage motor and the energy storage shaft. Upon receiving the closing command, the closing fastening structure unlocks, the closing spring releases energy to drive the circuit breaker to close, and after the closing is in place, the closing holding device locks the circuit breaker in the closed state. Upon receiving the opening command, the closing holding device unlocks, and the circuit breaker completes the opening.

[0003] Spring-operated mechanisms require a mechanical clutch device to ensure energy storage is achieved, preventing transmission jamming or component damage after energy storage. Existing energy storage clutch devices are mainly divided into three categories: the first is a clutch structure with a driving wheel and driven wheel and a ratchet, which is technically mature but has many parts and occupies a large space; the second is a gear axially disengaged clutch structure, which is simple in structure but lacks reliability after wear and is rarely used; the third is an overrunning clutch structure, which is compact but requires high machining precision and is costly.

[0004] The existing manual closing mechanical interlocking structure is susceptible to deformation due to external forces caused by misoperation, leading to interlock failure and decreased connection stability. The existing closing holding structure is greatly affected by cumulative errors in the opening half-shaft connection force, which is prone to tripping failure or "refusal to open" problems. The modular spring operating mechanism has high requirements for the matching accuracy between the closing holding device and the output shaft, and positioning deviation can easily cause no-close or refusal to open faults.

[0005] Therefore, there is an urgent need for a spring operating mechanism for circuit breakers to solve the problems of reliability, structure, cost, or accuracy related defects in the energy storage clutch device, manual closing mechanical interlock, closing holding structure, and modular mechanism of existing spring operating mechanisms for circuit breakers. Summary of the Invention

[0006] The purpose of this invention is to overcome the problems of reliability, structure, cost or accuracy related defects in the energy storage clutch device, manual closing mechanical interlock, closing holding structure and modular mechanism of the existing circuit breaker spring operating mechanism, and to propose a spring operating mechanism and method for circuit breakers.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a spring operating mechanism for a circuit breaker, comprising a clamp-type frame, an energy storage clutch device, a closing holding device, and a manual closing soft interlock device. The clamp-type frame includes a first side plate and a second side plate arranged opposite to each other, and the first side plate and the second side plate are fixedly connected by a support member; the clamp-type frame is equipped with a closing retention assembly and an output shaft mounting assembly. The energy storage transmission device includes an energy storage motor, a transmission assembly, an energy storage shaft, a cam, and an energy storage retaining plate. The energy storage motor is mounted on a clamp-type frame. The output shaft of the energy storage motor is connected to the energy storage shaft through the transmission assembly. The cam is mounted on the energy storage shaft, and the energy storage retaining plate cooperates with the cam. The energy storage clutch device includes a one-way clutch assembly. The driving end of the one-way clutch assembly is linked to the transmission assembly, and the driven end of the one-way clutch assembly is connected to the energy storage shaft. The closing holding device includes a tripping assembly, a reset elastic element, and an output shaft. The tripping assembly is hinged to the clamp-type frame, the reset elastic element is connected to the tripping assembly, and the tripping assembly is linked to the output shaft. The output shaft is mounted on the clamp-type frame through an output shaft mounting assembly, and the output shaft is reset and engaged with the closing holding assembly. The manual closing soft interlocking device includes a manual operation component, a closing trigger, and an interlocking component. The manual operation component is slidably mounted on a clamp-type frame. The manual operation component is driven by the closing trigger. The closing trigger is correspondingly set with the energy storage holding buckle. The interlocking component is driven by the closing trigger.

[0008] Furthermore, the one-way clutch assembly includes a single-tooth ratchet, a top plate, and a large sprocket that is linked to the transmission assembly; The single-tooth ratchet is fixedly connected to the energy storage shaft, and the top plate is hinged to the large sprocket via a pin. The top plate and the single-tooth ratchet are engaged in a clutch-locking mechanism. The single-tooth ratchet and top plate are built into the internal cavity of the large sprocket. The end of the large sprocket is connected to a cover plate, which closes the internal cavity of the large sprocket. A top plate return spring is fitted on the pin shaft, and the two ends of the top plate return spring are connected to the inner wall of the cavity of the top plate and the large sprocket, respectively.

[0009] Furthermore, a limiting pin is provided on the inner side of the first side plate, and the limiting pin is correspondingly set with the top plate.

[0010] Furthermore, the transmission assembly includes a pinion and a sprocket that mesh with each other, with the sprocket and the sprocket being coaxially arranged. The energy storage motor is fixed to the second side plate, and the output shaft of the energy storage motor passes through the second side plate and is fixedly connected to the pinion. The pinion and the small sprocket are integrally formed.

[0011] Furthermore, the energy storage shaft runs horizontally through the clamp-type frame, and both ends of the energy storage shaft are connected to the second side plate through bearings. The energy storage shaft is provided with a keyway, and the single-tooth ratchet and cam are fixedly connected to the energy storage shaft through a flat key.

[0012] Furthermore, the tripping assembly includes a tripping plate and a tripping half-shaft. One end of the tripping plate is provided with a snap-fit ​​protrusion, which engages with the tripping half-shaft for tripping. The reset elastic element is a tension spring or a torsion spring.

[0013] Furthermore, the manual operation component includes a closing button and a push rod, the closing trigger includes a closing push plate and a joint, and the interlocking component includes an interlocking plate; The clamp-type frame is equipped with a mounting bracket. The push rod is slidably connected to the mounting bracket. The closing button is connected to the push rod. The joint is hinged to the closing push plate by a pin. The push rod and the joint cooperate. The interlocking plate and the joint are in contact cooperation.

[0014] Furthermore, an interlocking plate return spring is connected to the interlocking plate. The interlocking plate includes a first interlocking plate and a second interlocking plate, and the first interlocking plate is connected to the second interlocking plate.

[0015] Furthermore, the outer ring of the cam is provided with a first protrusion that contacts the energy storage retaining plate. The first protrusion engages with the energy storage retaining plate and disengages from it. A second protrusion is provided on the output shaft and engages with the cam drive.

[0016] Secondly, the present invention provides an operating method for a spring operating mechanism of a circuit breaker, using a spring operating mechanism for a circuit breaker, including energy storage operation, closing operation, and opening operation, the specific steps of which are as follows: Energy storage operation: Start the energy storage motor of the energy storage transmission device. The energy storage motor drives the energy storage shaft to rotate through the transmission component. The energy storage shaft drives the cam to rotate synchronously to complete energy storage. When the energy storage is in place, the one-way clutch component of the energy storage position clutch device cuts off the power transmission from the transmission component to the energy storage shaft. At the same time, the energy storage holding plate of the energy storage transmission device cooperates with the cam to lock the energy storage shaft in the energy storage position state. Closing operation: The interlocking component of the manual closing soft interlocking device releases the closing interlock, triggering the manual operation component. The manual operation component, through the closing trigger element, drives the energy storage holding plate to engage with the cam, releasing the lock on the energy storage shaft. The energy storage shaft releases the stored energy and drives the output shaft of the closing holding device to rotate, completing the circuit breaker closing. After closing, the opening tripping component and the closing holding component of the closing holding device work together with the output shaft to lock the output shaft in the closed position. Opening operation: The opening trip component of the closing holding device is triggered to unlock, releasing the lock on the output shaft. The output shaft rotates in the reverse direction to complete the circuit breaker opening. After the opening is completed, the closing holding component is reset under the action of the output shaft, and the opening trip component is reset to the ready-to-operate state under the action of the reset elastic element. At the same time, the energy storage holding plate is reset, waiting for the next energy storage operation.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects: This invention proposes a spring operating mechanism for circuit breakers, employing an integrated clamp-type frame design. A high-rigidity modular load-bearing base is formed by opposing first and second side plates and supporting components. The energy storage transmission device, energy storage positioning clutch device, closing holding device, and manual closing soft interlock device are all integrated and installed within the frame. This eliminates the cumulative assembly errors caused by the dispersed installation of multiple components, ensures the coaxiality and fitting accuracy of each moving part, significantly improves the overall rigidity and operational stability of the mechanism, simplifies assembly, debugging, and subsequent maintenance procedures, reduces the number of non-standard parts, and lowers processing, assembly, and maintenance costs. The compact structure also improves the mechanism's adaptability to different types of circuit breakers. Through a one-way clutch assembly that links the active end with the transmission components and connects the driven end with the energy storage shaft, precise and immediate disconnection of power transmission is achieved after energy storage is complete. This completely avoids faults such as energy storage overshoot, motor stall, and transmission gear wear, effectively protecting the energy storage motor and transmission components. Simultaneously, it simplifies the transmission chain, reduces failure points, and significantly improves the operational reliability of the energy storage component and the overall mechanical lifespan of the mechanism. The use of a tripping assembly hinged to the clamp-type frame, combined with a linkage structure between the reset elastic element and the output shaft, achieves stable holding of the closed state and effective tripping. The system offers rapid response, stable closing locking force with no risk of tripping failure, and rapid opening tripping action without jamming or failure to operate. It also significantly reduces intermediate transmission links, lowers transmission backlash and operational errors, and substantially improves the long-term operational reliability of both the closing holding and opening tripping mechanisms. Through the coordinated structure of the sliding-mounted manual operation component, closing trigger, and interlocking components, it achieves soft interlocking protection for manual closing. Closing operation can only be completed when preconditions are met, structurally eliminating the risks of accidental closing, closing under load, and other violations. Compared to traditional rigid linkage mechanical interlocks, it features a shorter transmission link and no redundant transmission components. The precise and seamless interlocking action significantly improves the safety and reliability of manual closing operations. The overall solution, through modular structural optimization and integrated design, achieves precise timing coordination and highly reliable linkage among various functional units. It comprehensively addresses the core shortcomings of existing circuit breaker spring operating mechanisms, such as insufficient reliability, complex and redundant structures, high manufacturing costs, and poor assembly and operational accuracy. This solution balances the mechanism's performance stability, cost control, and ease of maintenance, significantly improving the overall performance and service life of the circuit breaker spring operating mechanism.

[0018] Furthermore, the energy storage positioning clutch device of the present invention adopts a structural design in which a single-tooth ratchet and a top plate are built into a large sprocket, and a cover plate is riveted to the large sprocket. The single-tooth ratchet is keyed to the energy storage shaft, and the large sprocket is loosely fitted on the energy storage shaft. Compared with the traditional energy storage positioning clutch device with a single-sided top plate structure, it has the advantages of uniform load, large load-bearing capacity, smooth transmission, and small axial space occupation. Meanwhile, our organization has designed a joint-type soft interlocking structure for manual closing protection. The manual closing device incorporates a joint-type clutch structure that can rotate around a pin. The closing button is mounted on the push rod, and the joint is hinged to the closing push plate via a pin. When manual closing is permitted and the closing button is pressed, the button drives the push rod to push the joint, which in turn moves the closing push plate to open the energy storage retaining plate, releasing the closing spring and completing the circuit breaker closing. When the circuit breaker does not meet the conditions for manual closing, the interlocking plate pushes the joint to rotate around the pin. Pressing the closing button at this time prevents the push rod from effectively transmitting power to the joint, and neither the closing push plate nor the energy storage retaining plate moves. This soft interlocking structure prevents deformation of the interlocking device due to misoperation and avoids positional displacement of the energy storage retaining plate, significantly improving the long-term operational reliability of the interlocking function. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings: Figure 1 This is a schematic diagram of a spring operating mechanism for a circuit breaker according to the present invention.

[0020] Figure 2 This is a schematic diagram of the tripping latch plate and reset structure of a spring operating mechanism for a circuit breaker according to the present invention.

[0021] Figure 3 This is a schematic diagram of the articulated clutch and interlocking structure of a spring operating mechanism for a circuit breaker according to the present invention.

[0022] Figure 4 This is a front view of a clamp-type frame for a spring operating mechanism for a circuit breaker according to the present invention.

[0023] Figure 5 This is an external schematic diagram of the clamp-type frame of a spring operating mechanism for a circuit breaker according to the present invention.

[0024] Figure 6 This is a rear view of the clamp-type frame of a spring operating mechanism for a circuit breaker according to the present invention.

[0025] Figure 7 This is a schematic diagram of the energy storage shaft and supporting components of a spring operating mechanism for a circuit breaker according to the present invention.

[0026] Figure 8 This is a schematic diagram of the cam and its mating components for a spring operating mechanism for a circuit breaker according to the present invention.

[0027] Figure 9 This is a schematic diagram of the internal structure of the large sprocket of a spring operating mechanism for a circuit breaker according to the present invention.

[0028] Figure 10 This is a cross-sectional schematic diagram of the energy storage shaft and supporting components of a spring operating mechanism for a circuit breaker according to the present invention.

[0029] Among them, 1 is the first side plate, 2 is the small gear, 3 is the large gear, 4 is the side plate support rod, 5 is the energy storage motor, 6 is the second side plate, 7 is the energy storage holding plate, 8 is the closing button, 9 is the push rod, 10 is the mounting bracket, 11 is the joint, 12 is the closing push plate, 13 is the pin shaft, 14 is the first interlocking plate, 15 is the second interlocking plate, 16 is the cam, 17 is the large sprocket, 18 is the single-tooth ratchet, 19 is the ratchet, 20 is the energy storage shaft, 21 is the opening plate, 22 is the return spring, 23 is the opening half shaft, 24 is the output shaft, 25 is the sector plate assembly, and 26 is the output shaft mounting assembly. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0031] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] It should be noted that the terms "first," "second," etc., in the specification and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] Example 1 See Figure 1 A spring operating mechanism for a circuit breaker includes a clamp-type frame, an energy storage transmission device, an energy storage positioning clutch device, a closing holding device, and a manual closing soft interlock device. The clamp-type frame includes a first side plate 1 and a second side plate 6, which are fixedly connected by a support member, namely a side plate support rod 4; a closing retention assembly and an output shaft mounting assembly 26 are installed on the clamp-type frame; the closing retention assembly is a sector plate assembly 25. The energy storage transmission device includes an energy storage motor 5, a transmission assembly, an energy storage shaft 20, a cam 16, and an energy storage retaining plate 7. The energy storage motor 5 is mounted on a clamp-type frame. The output shaft of the energy storage motor 5 is connected to the energy storage shaft 20 via the transmission assembly. The cam 16 is mounted on the energy storage shaft 20, and the energy storage retaining plate 7 cooperates with the cam 16. The transmission assembly includes a small gear 2 and a large gear 3 that mesh with each other. The large gear 3 is coaxially arranged with a large sprocket 17. The energy storage motor 5 is fixed to the second side plate 6. The output shaft of the energy storage motor 5 passes through the second side plate 6 and is fixedly connected to the small gear 2. The small gear 2 and the small sprocket are integrally formed. The energy storage shaft 20 horizontally passes through the clamp-type frame. Both ends of the energy storage shaft 20 are connected to the second side plate 6 via bearings. The energy storage shaft 20 is provided with a keyway. A single-tooth ratchet 18 and the cam 16 are fixedly connected to the energy storage shaft 20 via a flat key. The outer ring of the cam 16 is provided with a first protrusion that contacts the energy storage retaining plate 7. The first protrusion is engaged with the energy storage retaining plate 7. The output shaft 24 is provided with a second protrusion that is engaged with the cam 16 in a transmission manner.

[0035] The energy storage clutch device includes a one-way clutch assembly. The driving end of the one-way clutch assembly is linked to the transmission assembly, and the driven end of the one-way clutch assembly is connected to the energy storage shaft 20. The one-way clutch assembly includes a single-tooth ratchet 18, a top plate, and a large sprocket 17 linked to the transmission assembly. The single-tooth ratchet 18 is fixedly connected to the energy storage shaft 20, and the top plate is hinged to the large sprocket 17 via a pin 13. The top plate and the single-tooth ratchet 18 are engaged and disengaged. The single-tooth ratchet 18 and the top plate are built into the internal cavity of the large sprocket 17. A cover plate is connected to the end of the large sprocket 17, and the cover plate closes the internal cavity of the large sprocket 17. A top plate return spring is sleeved on the pin 13, and the two ends of the top plate return spring are connected to the top plate and the inner wall of the cavity of the large sprocket 17, respectively. A limiting pin is provided on the inner side of the first side plate 1, and the limiting pin is correspondingly set with the top plate.

[0036] The closing holding device includes a tripping assembly, a reset elastic element, and an output shaft 24. The tripping assembly is hinged to the clamp-type frame, and the reset elastic element is connected to the tripping assembly. The tripping assembly is linked to the output shaft 24. The output shaft 24 is mounted on the clamp-type frame via an output shaft mounting assembly 26. The output shaft 24 is reset and engaged with the closing holding assembly, i.e., the sector plate assembly 25. The tripping assembly includes a tripping latch plate 21 and a tripping half-shaft 23. One end of the tripping latch plate 21 is provided with a latching protrusion, which is in tripping engagement with the tripping half-shaft 23. The reset elastic element is a tension spring or a torsion spring.

[0037] The manual closing soft interlock device includes a manual operation component, a closing trigger, and an interlocking component. The manual operation component is slidably mounted on a clamp-type frame and is driven by the closing trigger. The closing trigger is correspondingly set with the energy storage holding plate 7. The interlocking component is driven by the closing trigger. The manual operation component includes a closing button 8 and a push rod 9. The closing trigger includes a closing push plate 12 and a joint 11. The interlocking component includes an interlocking plate. An interlocking plate return spring is connected to the interlocking plate. The interlocking plate includes a first interlocking plate 14 and a second interlocking plate 15, which are connected.

[0038] A mounting bracket 10 is installed on the clamp-type frame. The push rod 9 is slidably connected to the mounting bracket 10. The closing button 8 is connected to the push rod 9. The joint 11 is hinged to the closing push plate 12 through the pin 13. The push rod 9 cooperates with the joint 11. The interlocking plate is in contact with the joint 11.

[0039] Example 2 An operating method for a circuit breaker spring operating mechanism, using a circuit breaker spring operating mechanism as described in Embodiment 1, includes energy storage operation, closing operation, and opening operation. The specific steps are as follows: Energy storage operation: Start the energy storage motor 5 of the energy storage transmission device. The energy storage motor 5 drives the energy storage shaft 20 to rotate through the transmission component. The energy storage shaft 20 drives the cam 16 to rotate synchronously to complete energy storage. When the energy storage is in place, the one-way clutch component of the energy storage position clutch device cuts off the power transmission from the transmission component to the energy storage shaft 20. At the same time, the energy storage holding plate 7 of the energy storage transmission device cooperates with the cam 16 to lock the energy storage shaft 20 in the energy storage position state. Closing operation: The interlocking component of the manual closing soft interlocking device releases the closing interlock, triggering the manual operation component. The manual operation component, through the closing trigger, drives the energy storage holding plate 7 to disengage from the cam 16, releasing the lock on the energy storage shaft 20. The energy storage shaft 20 releases the stored energy and drives the output shaft 24 of the closing holding device to rotate, completing the circuit breaker closing. After closing, the opening tripping component and the closing holding component of the closing holding device work together with the output shaft 24 to lock the output shaft 24 in the closed position. Opening operation: The opening trip component of the closing holding device is triggered to unlock, releasing the lock on the output shaft 24. The output shaft 24 rotates in the reverse direction to complete the circuit breaker opening. After the opening is completed, the closing holding component is reset under the action of the output shaft 24, and the opening trip component is reset to the ready-to-operate state under the action of the reset elastic element. At the same time, the energy storage holding plate 7 is reset, waiting for the next energy storage operation.

[0040] Furthermore, the specific implementation steps for each operation are as follows: Energy storage operation: Start the energy storage motor 5. The output shaft of the energy storage motor 5 drives the pinion 2 to rotate. The pinion 2 meshes with and drives the large gear 3 to rotate. The large sprocket 17, which is coaxial with the large gear 3, rotates synchronously. Through the one-way clutch assembly, it drives the energy storage shaft 20 to rotate. The energy storage shaft 20 drives the cam 16 to rotate to complete energy storage. When the energy storage is complete, the single-tooth ratchet 18 connected to the energy storage shaft 20 disengages from the top plate hinged to the large sprocket 17, cutting off the power transmission. Closing operation: The first interlocking plate 14 and the second interlocking plate 15 drive the joint 11 to rotate around the pin shaft to release the interlock. Press the closing button 8. The closing button 8 drives the push rod 9 to slide along the mounting bracket 10. The push rod 9 drives the closing push plate 12 to move through the joint 11. The closing push plate 12 drives the energy storage holding plate 7 to disengage from the cam 16. The energy storage shaft 20 releases the stored energy and drives the output shaft 24 to rotate to complete the closing. After closing, the opening plate 21 engages with the opening half shaft 23. The opening half shaft 23 engages with the sector plate assembly 25 to lock the circuit breaker in the closed state. Opening operation: The opening half shaft 23 is driven to rotate, and the opening half shaft 23 is disengaged from the opening buckle plate 21. The opening buckle plate 21 is reset under the action of the reset spring 22, releasing the lock on the output shaft 24. The output shaft 24 rotates in the opposite direction to complete the opening. Under the action of the output shaft 24, the sector plate assembly 25 is reset.

[0041] Example 3 A spring operating mechanism for a circuit breaker has a clamp-type frame structure. A first side plate 1 and a second side plate 6 are fixed together by four side plate support rods 4 to form the clamp-type frame structure. An energy storage motor 5 is fixed to the second side plate 6. The energy storage transmission device of this invention mainly includes a pinion 2, a large gear 3, a large sprocket 17, an energy storage shaft 20, an energy storage holding plate 7, and a cam 16. During energy storage, the large sprocket 17 is the driving wheel, containing a single-tooth ratchet 18 and a top plate. The single-tooth ratchet 18 is fixed to the energy storage shaft 20 via a key connection. During energy storage operation, the output shaft of the energy storage motor 5 drives the pinion 2 to rotate. The pinion 2 and the small sprocket together drive the large sprocket 17, which in turn drives the single-tooth ratchet 18, the energy storage shaft 20, and the cam 16 to rotate via the top plate. After rotating approximately 180 degrees, the energy storage is complete, and the cam 16 is held in place by the energy storage retaining plate 7, thus "locking" the cam 16 in the energy storage position. At this time, the top plate is opened by the limit pin on the first side plate 1, so even if the large sprocket 17 continues to rotate, it will not drive the single-tooth ratchet 18 to rotate. When a closing command is received, the closing electromagnet actuates, the energy storage retaining plate 7 opens, the closing spring releases energy, and the energy storage shaft 20 and the cam 16 rotate approximately 160 degrees, driving the output shaft to rotate. The output linkage can then close the circuit breaker.

[0042] A built-in energy storage positioning clutch device for a circuit breaker spring operating mechanism integrates a single-tooth ratchet 18 driven wheel mounted on an energy storage shaft 20 and a top plate pawl into a large sprocket 17 driving wheel. A cover plate is then riveted to the large sprocket 17, and the single-tooth ratchet 18 is connected to the energy storage shaft 20 via a key. Compared to traditional single-sided top plate energy storage positioning clutch devices, this structure offers advantages such as uniform load distribution, smooth transmission, high load capacity, and small axial space occupation.

[0043] This embodiment features a unique closing holding device: the reset spring force of the tripping plate helps the tripping plate to release. After the circuit breaker is tripped, the output shaft drives the tripping plate back to the latching position, preparing for the next closing. This structure makes the tripping force small and prevents the "refusal to trip" phenomenon where the output shaft cannot rotate after the tripping half shaft is opened.

[0044] This embodiment proposes a "soft interlock" structure to prevent manual closing of the mechanical interlock: a "joint-type" clutch device is designed in the manual closing device. The closing button 8 is mounted on the push rod 9, and the "joint 11" is fixed to the closing push plate 12 by the pin 13 and can rotate around the pin 13. When the conditions for allowing manual closing are met and the closing button 8 is pressed, the closing button 8 drives the push rod 9 to push the "joint 11". At this time, the "joint 11" can drive the closing push plate 12 to move. The closing push plate 12 pushes open the energy storage holding plate 7, and the closing spring releases energy to drive the cam 16 to rotate, thereby driving the output shaft to rotate and the circuit breaker closes.

[0045] When the circuit breaker is in the closed state or the circuit breaker trolley is not in the running or test position when the conditions for manual closing are not met, the first interlocking plate 14 and the second interlocking plate 15 on the mechanism will lift upwards and push the "joint 11" mounted on the closing push plate 12 upwards. At this time, if the closing button 8 is pressed, the closing button 8 can drive the push rod 9 to move forward. Since the "joint 11" has been rotated at a certain angle, the push rod 9 cannot be pushed onto the "joint 11", the closing push plate 12 will not move, and the energy storage retaining plate 7 cannot be opened, preventing the circuit breaker from being manually closed. The advantage of this "soft interlocking" device is that the energy storage retaining plate 7 will not be subjected to force due to misoperation, thus causing deformation of the interlocking device or slight changes in the position of the energy storage retaining plate 7, which greatly improves the reliability of the interlocking.

[0046] The following description, in conjunction with the accompanying drawings, further explains this embodiment. For the layout of the clamp-type frame and core components, please refer to... Figure 1 , Figure 4 , Figure 6 The first side plate 1 and the second side plate 6 are two symmetrically arranged rigid plates that form the foundation for the entire mechanism. They are made of metal to ensure structural strength, and multiple mounting holes are reserved on the surface for fixing the side plate support rod 4, limit pins, bearings and other components.

[0047] There are four side plate support rods 4 in total. They are all cylindrical rigid rods. Their two ends are connected to the first side plate 1 and the second side plate 6 by threads or riveting. They are evenly distributed around the side plates to fix the first side plate 1 and the second side plate 6 to form a stable clamp-type frame structure to withstand various loads during the operation of the mechanism.

[0048] The energy storage motor 5 is a cuboid structure, fixed to the outside of the second side plate 6. The motor output shaft passes through the reserved hole of the second side plate 6 and extends into the frame, where it is fixedly connected to the pinion 2 to provide a power source for energy storage.

[0049] The pinion 2 is a cylindrical gear, which is integrally formed with the small sprocket or fixed by a key connection. It is sleeved on the output shaft of the energy storage motor 5 and fixed to the motor output shaft by a key connection. It rotates synchronously with the motor output shaft to transmit power.

[0050] Large gear 3 / large sprocket 17: Large gear 3 and large sprocket 17 are coaxial integral structures or fixedly connected and located inside the frame. Large gear 3 meshes with small gear 2. Large sprocket 17 is the driving wheel. The internal cavity is reserved for installing single-tooth ratchet 18 and top plate. Both ends are connected to the first side plate 1 and the second side plate 6 through bearings and can rotate freely around its own axis.

[0051] The energy storage shaft 20 is a cylindrical drive shaft that runs horizontally through the entire clamp frame. Both ends are connected to the first side plate 1 and the second side plate 6 through bearings. It can rotate around its own axis. The shaft body has a keyway for connecting the single-tooth ratchet 18 and a fixed cam 16 for transmitting stored energy and driving the closing action.

[0052] Cam 16 is an irregular block structure that is fixed to the energy storage shaft 20 by a key connection and rotates synchronously with the energy storage shaft 20. The edge of cam 16 is designed with a protruding structure to cooperate with the energy storage retaining plate 7 to achieve energy storage locking.

[0053] The output shaft is a cylindrical shaft, installed inside the frame parallel or perpendicular to the energy storage shaft 20. According to the layout of the drawing, one end is connected to the circuit breaker body through the connecting rod output rod, and the other end cooperates with the cam 16. Driven by the cam 16, it rotates to transfer the energy of the energy storage spring to the circuit breaker to realize the closing action.

[0054] The energy storage retaining plate 7 is a sheet-like rigid structure that is hinged to the first side plate 1 or the second side plate 6 via a pin 13. It can rotate around the pin 13. One end of the plate is designed with a slot to lock the cam 16, thereby locking it after the energy storage is in place. The other end cooperates with the closing electromagnet and the manual closing push plate 12, and is driven by them to unlock.

[0055] The first side plate 1 and the second side plate 6 are symmetrically fixed by four side plate support rods 4, forming a closed clamp-type frame. All core transmission components, such as the energy storage shaft 20, the large sprocket 17, and the output shaft, are installed between the first side plate 1 and the second side plate 6 and connected to the side plates through bearings to ensure smooth rotation of the components. The energy storage motor 5 is fixed to the second side plate 6, and its output shaft passes through the side plate and is integrally fixed to the pinion 2 and the small sprocket. The pinion 2 meshes with the large gear 3, driving the large sprocket 17 to rotate. The large sprocket 17 internally cooperates with the single-tooth ratchet 18 and the top plate. The single-tooth ratchet 18 is fixed to the energy storage shaft 20 through a key connection. A cam 16 is fixed on the energy storage shaft 20, and the cam 16 cooperates with the output shaft and the energy storage retaining plate 7. The output shaft is connected to the circuit breaker body through an output connecting rod, forming a complete power transmission and action execution link.

[0056] For the tripping plate and reset structure, please refer to [link / reference]. Figure 2 The tripping plate 21 is a sheet-like rigid structure that is hinged to the frame side plate or main shaft support by a pin 13. It can rotate around the pin 13. One end is designed with a snap-fit ​​protrusion to cooperate with the tripping half shaft 23 to achieve retention after closing. The other end is connected to the reset spring 22.

[0057] The reset spring 22 is a cylindrical tension spring or torsion spring, with one end fixed to the end of the tripping plate 21 and the other end fixed to the side plate of the frame or the mounting bracket 10. It provides reset force for the tripping plate 21, and the direction of the force is designed to help the tripping plate 21 to trip.

[0058] The tripping half-shaft 23 is a cylindrical shaft installed inside the frame. It engages with the snap-fit ​​protrusion of the tripping buckle plate 21. When the circuit is closed, the protrusion of the tripping buckle plate 21 is engaged on the tripping half-shaft 23 to maintain the closed circuit. When the circuit is opened, the tripping half-shaft 23 rotates and disengages from the tripping buckle plate 21.

[0059] The output shaft 24 is a cylindrical drive shaft that is connected to the tripping mechanism of the circuit breaker body and is linked with the tripping latch plate 21. After the tripping is completed, the main shaft rotates and drives the tripping latch plate 21 to rotate around the pin shaft 13 and return to the latching position, preparing for the next closing.

[0060] The limiting component is a small block structure fixed to the side plate of the frame. It is used to limit the rotation angle of the tripping plate, prevent the tripping plate from over-resetting or shifting, and ensure the fastening accuracy.

[0061] The tripping plate 21 is hinged to a fixed support point on the side plate of the frame via a pin 13, allowing it to rotate freely around the pin 13. The two ends of the return spring 22 are fixed to the end of the tripping plate 21 and the side plate of the frame, respectively, consistently applying a spring force to assist in tripping the tripping plate 21. The tripping half-shaft 23 corresponds to the latching protrusion of the tripping plate 21, forming a latching engagement after the circuit is closed, thus maintaining the closed circuit. The output shaft 24 is connected to the tripping plate 21 via a linkage rod or direct contact. During tripping, the main shaft rotates, causing the tripping plate 21 to rotate, compressing or stretching the return spring 22 to achieve tripping. After tripping, the return spring 22 rebounds, causing the tripping plate 21 to reset. Simultaneously, the main shaft drives the tripping plate 21 back to the latching position with the tripping half-shaft 23, completing the reset. A limiting component is fixed to the side plate, contacting the edge of the tripping plate 21 to limit its maximum rotation angle and ensure structural stability.

[0062] For articulated clutch and interlocking structure, see [link / reference]. Figure 3 The closing button 8 is a cylindrical or square button installed at one end of the push rod 9. It can be pressed and moved along the axis of the push rod 9. It is a trigger component for manual closing and has anti-slip texture on the surface for easy operation.

[0063] The push rod 9 is a cylindrical rigid rod. One end is fixedly connected to the closing button 8, and the other end extends to the joint 11. It can move axially as the closing button 8 is pressed to transmit operating force.

[0064] The joint 11 is an irregular structure that is hinged to the closing push plate 12 by a pin 13. It can rotate freely around the pin 13 with a rotation angle of 10°-30° to meet the interlocking switching requirements. One end is paired with the push rod 9 to receive the push force of the push rod 9, and the other end is fixedly linked to the closing push plate 12.

[0065] The pin 13 is a cylindrical pin that passes through the joint 11 and the closing push plate 12, hinges the two together, provides a fulcrum for the rotation of the joint 11, and ensures the rigidity of the connection to prevent loosening.

[0066] The closing push plate 12 is a sheet-like rigid structure. One end is hinged to the joint 11, and the other end corresponds to the energy storage holding plate 7. It can move horizontally with the rotation of the joint 11 to push the energy storage holding plate 7 to unlock and realize manual closing.

[0067] The first interlocking plate 14 and the second interlocking plate 15 are sheet-like structures installed inside the frame. One end is connected to the circuit breaker status detection component for closing status detection and handcart position detection, and the other end corresponds to the joint 11. They can move up and down according to the circuit breaker status and handcart position to control the rotation state of the joint 11.

[0068] The interlocking plate return spring is a small torsion spring, with one end fixed to the first interlocking plate 14 / second interlocking plate 15 and the other end fixed to the frame. It is used to reset the interlocking plate and ensure reliable engagement between the interlocking plate and the joint 11.

[0069] The closing button 8 is fixed to the front end of the push rod 9. The push rod 9 and one end of the joint 11 are not fixedly connected, but only have contact transmission. The joint 11 is hinged to the reserved hole of the closing push plate 12 through the pin 13. The joint 11 can rotate freely around the pin 13. The other end of the joint 11 is fixed to the closing push plate 12 or integrated into the design to achieve synchronous movement. The end of the closing push plate 12 contacts one end of the energy storage retaining plate 7. It can be unlocked by pushing the energy storage retaining plate 7. The first interlocking plate 14 and the second interlocking plate 15 are installed on one side of the closing push plate 12. Their top ends contact the side of the joint 11. The lower ends of the first interlocking plate 14 and the second interlocking plate 15 are connected to the circuit breaker status detection component and the handcart position detection component, and are controlled by them to move up and down. The interlocking plate return spring is sleeved on the fixed pin of the interlocking plate to provide the interlocking plate with a downward return force, ensuring that the joint 11 is in a transmittable position under normal conditions.

[0070] When manual closing is permitted, the interlocking plate is in a low position under the action of the reset spring, and does not push the joint 11 to rotate. The joint 11 is in a horizontal transmission state. When the closing button 8 is pressed, the push rod 9 pushes the joint 11, and the joint 11 drives the closing push plate 12 to move, thereby pushing the energy storage holding plate 7 to unlock. When manual closing is prohibited, the detection component drives the interlocking plate to move upward, pushing the joint 11 to rotate around the pin 13, causing the contact position between the joint 11 and the push rod 9 to shift. At this time, when the closing button 8 is pressed, the push rod 9 cannot contact the joint 11 and cannot drive the closing push plate 12 to move, thus achieving interlocking.

[0071] See energy storage shaft and related components. Figure 7 and Figure 10The energy storage shaft 20 is a cylindrical drive shaft made of high-strength metal. The shaft body is machined with keyways for connecting the single-tooth ratchet 18, steps for positioning the cam 16, and bearings. Both ends are machined with threads for installing bearing end caps, and it runs through the entire clamp-type frame.

[0072] The single-tooth ratchet 18 is a ring structure with a keyway machined on the inner ring, which corresponds to the keyway of the energy storage shaft 20. It is fixed to the energy storage shaft 20 by a flat key connection and rotates synchronously with the energy storage shaft 20. The outer ring has one tooth machined for cooperating with the top plate to achieve unidirectional transmission.

[0073] The bearings are deep groove ball bearings, two in total, which are respectively fitted onto the two ends of the energy storage shaft 20. The outer ring of the bearing is fixed in place with the bearing holes of the first side plate 1 and the second side plate 6, and the inner ring is fitted with the energy storage shaft 20, so that the energy storage shaft 20 can rotate smoothly around its own axis and reduce rotational friction.

[0074] The bearing end cover is a circular cover plate, which is fixed to the outside of the first side plate 1 and the second side plate 6 by bolts. It covers the bearing, seals the bearing, prevents dust from entering, and limits the axial displacement of the bearing to ensure the installation accuracy of the energy storage shaft 20.

[0075] The cam 16 fixing key is a flat key, which is embedded in the keyway of the energy storage shaft 20 and the keyway of the cam 16, fixing the cam 16 and the energy storage shaft 20 to ensure that the cam 16 and the energy storage shaft 20 rotate synchronously and transmit torque.

[0076] The limiting pin is a cylindrical pin, fixed to the inner side of the first side plate 1, corresponding to the top plate inside the large sprocket 17, and is used to open the top plate after the energy storage is in place, so as to realize the energy storage is in place and the clutch is engaged.

[0077] The energy storage shaft 20 passes through the bearing holes of the first side plate 1 and the second side plate 6 at both ends, and bearings are fitted at both ends. The outer ring of the bearing is fixed with the bearing hole of the side plate by interference fit, and the inner ring is transitionally fitted with the energy storage shaft 20. The bearing end cap is fixed to the outside of the side plate by bolts to seal and fix the bearing. The single-tooth ratchet 18 is embedded in the keyway of the energy storage shaft 20 by a flat key and is fixedly connected to the energy storage shaft 20. It is located in the internal cavity of the large sprocket 17. The cam 16 is connected to the keyway of the energy storage shaft 20 by a cam fixing key and is fixed in the middle of the energy storage shaft 20 or on the side near the output shaft, corresponding to the output shaft and the energy storage retaining plate 7. The limiting pin is vertically fixed to the inner side of the first side plate 1, and its top end extends into the interior of the large sprocket 17, corresponding to the edge of the top plate. When the energy storage is in place, the top plate rotates with the large sprocket 17 to the position of the limiting pin and is pushed open by the limiting pin, disengaging from the single-tooth ratchet 18.

[0078] See cam and mating parts Figure 8The cam 16 body is an irregular block structure made of high-strength metal. The inner ring is machined with a keyway for connecting with the energy storage shaft 20, and the outer ring is designed with a first protrusion for cooperating with the energy storage retaining plate 7 to achieve energy storage locking.

[0079] The cam keyway is located on the inner ring of the cam 16 and corresponds to the keyway of the energy storage shaft 20. It is used to install a flat key to achieve a fixed connection between the cam 16 and the energy storage shaft 20.

[0080] The first protrusion that contacts the energy storage retaining buckle is the protrusion on the outer ring of the cam 16. Its size matches the slot of the energy storage retaining buckle 7. After energy storage is in place, the protrusion is locked in the slot of the energy storage retaining buckle 7, thereby locking the cam 16 and maintaining the energy storage state.

[0081] The second protrusion on the output shaft contacts and engages with the cam. When the cam 16 rotates, the protrusion pushes the output shaft to rotate, transferring the energy of the energy storage spring to the output shaft, thereby driving the circuit breaker to close. The edge is a smooth curved surface to reduce motion friction.

[0082] The cam positioning step is located on one side of the cam 16 and cooperates with the step on the energy storage shaft 20. It is used to limit the axial displacement of the cam 16 on the energy storage shaft 20 and ensure the fitting accuracy of the cam 16 with the energy storage retaining plate 7 and the output shaft.

[0083] Cam 16 is fixedly connected to energy storage shaft 20 by embedding its inner ring keyway into the keyway of energy storage shaft 20 via a flat key. The positioning step of cam 16 fits against the step on energy storage shaft 20, restricting the axial movement of cam 16 and ensuring the accurate installation position of cam 16. The first protrusion of cam 16 that contacts energy storage retaining plate 7 corresponds to the slot of energy storage retaining plate 7. After energy storage is in place, energy storage retaining plate 7 locks cam 16 on the protrusion. The second protrusion on the output shaft has a groove or protrusion designed to correspond to the contact end of cam 16. When energy storage retaining plate 7 is unlocked, cam 16 rotates under the drive of closing spring, and the second protrusion pushes the output shaft to rotate, realizing the closing action. Cam 16 rotates synchronously with energy storage shaft 20. Its rotation angle is determined by 180° during energy storage and 160° during closing. The cooperation with energy storage retaining plate 7 and output shaft is always precise.

[0084] See the internal structure of the large sprocket. Figure 9 The large sprocket 17 has a ring structure and is made of high-strength metal. The outer ring is machined with sprocket teeth for meshing with the small sprocket to transmit power. The inner ring has a reserved annular cavity for installing the single-tooth ratchet 18 and the top plate. The cavity has a protrusion for installing the pin 13 of the top plate. One end has a cover plate mounting surface for riveting the cover plate.

[0085] The single-tooth ratchet 18 is a ring structure, installed in the internal cavity of the large sprocket 17. The inner ring is connected to the energy storage shaft 20 by a flat key, and the outer ring is machined with one tooth for engaging with the top plate. It can rotate synchronously with the energy storage shaft 20, or it can cut off the power transmission between the large sprocket 17 and the energy storage shaft 20 when it rotates relative to the large sprocket 17 and disengages.

[0086] The top plate pawl is a sheet-like rigid structure that is hinged to a protrusion inside the large sprocket 17 via a pin 13. It can rotate freely around the pin 13. One end is designed with a pawl to engage with the teeth of the single-tooth ratchet 18 to transmit power, and the other end is designed with a force-bearing end to engage with the limit pin to achieve disengagement.

[0087] The top plate return spring is a small torsion spring that is fitted onto the hinge pin 13 of the top plate. One end is fixed to the top plate, and the other end is fixed to the inner wall of the cavity of the large sprocket 17. It is used to reset the top plate and ensure that the top plate is always in contact with the teeth of the single-tooth ratchet 18 during the energy storage process.

[0088] The cover plate is a circular cover plate that fits against the cover plate mounting surface of the large sprocket 17. It is fixed to the large sprocket 17 by riveting, which encloses the single-tooth ratchet 18, the top plate, and the top plate return spring in the cavity of the large sprocket 17 to prevent dust from entering and to ensure the installation stability of the internal components.

[0089] The large sprocket bearing is a rolling bearing, which is fitted at both ends of the large sprocket 17 or cooperates with the energy storage shaft 20 to support the large sprocket 17, so that the large sprocket 17 can rotate smoothly around its own axis and form a reliable cooperation with the energy storage shaft 20 and the side plate.

[0090] The large sprocket 17 is mounted inside the frame via bearings at both ends, cooperating with the first side plate 1 and the second side plate 6, and can rotate freely around its own axis. The sprocket teeth on the outer ring of the large sprocket 17 mesh with the small sprocket, receiving power from the energy storage motor 5. Inside the cavity of the large sprocket 17, the top plate is hinged to a protrusion on the inner wall of the cavity via a pin 13. A return spring on the top plate is sleeved on the pin 13, providing a return force to the top plate, ensuring that the pawl of the top plate always contacts the outer ring of the single-tooth ratchet 18. The single-tooth ratchet 18 is mounted at the center of the cavity of the large sprocket 17, with its inner ring connected to the energy storage shaft 20 via a flat key. The pawl of the ring engages with the pawl of the top plate. During energy storage, the pawl of the top plate engages the teeth of the single-tooth ratchet 18, causing the single-tooth ratchet 18 and the energy storage shaft 20 to rotate. The cover plate is fixed to one end of the large sprocket 17 by riveting, sealing the internal single-tooth ratchet 18, the top plate, and the return spring to form a complete built-in structure. When energy storage is complete, the limit pin on the first side plate 1 opens the force-bearing end of the top plate, the top plate rotates around the pin shaft 13, the pawl disengages from the single-tooth ratchet 18, and the large sprocket 17 continues to rotate freely, no longer driving the single-tooth ratchet 18 and the energy storage shaft 20 to rotate, thus realizing the engagement and disengagement when energy storage is complete.

[0091] All components of this invention are mounted on the first side plate 1, the second side plate 6, and four side plate support rods 4 of a clamp-type frame. The power transmission path is as follows: energy storage motor 5, pinion 2, small sprocket, large sprocket 17, top plate, single-tooth ratchet 18, energy storage shaft 20, cam 16, output shaft, and circuit breaker. The core cooperation relationships are: the large sprocket 17 with built-in clutch and the single-tooth ratchet 18 with the top plate; the closing holding and opening buckle plate and the return spring with the main shaft; the manual soft interlocking joint 11 with the push rod 9 with the closing push plate 12 and the interlocking plate. All rotating components such as the energy storage shaft 20, the large sprocket 17, and the output shaft are connected to the side plates through bearings. All fixed components such as the motor, limit pins, and bearing end caps are fixed to the frame through bolts, riveting, or threaded connections. All linkage components such as the joint 11, the opening buckle plate, and the energy storage holding buckle plate 7 are hinged through the pin shaft 13 to ensure flexible and reliable operation, a compact overall structure, and smooth transmission.

[0092] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing and the full scope of its equivalents. For purposes of completeness, all articles and references, including disclosures in patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

[0093] The above content provides a further detailed description of the present invention. It should not be construed that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the present invention.

Claims

1. A spring operating mechanism for a circuit breaker, characterized in that, Includes a clamp-type frame, an energy storage transmission device, an energy storage positioning clutch device, a closing holding device, and a manual closing soft interlock device; The clamp-type frame includes a first side plate (1) and a second side plate (6) arranged opposite to each other, and the first side plate (1) and the second side plate (6) are fixedly connected by a support member; the clamp-type frame is equipped with a closing holding assembly and an output shaft mounting assembly (26). The energy storage transmission device includes an energy storage motor (5), a transmission assembly, an energy storage shaft (20), a cam (16), and an energy storage retaining plate (7). The energy storage motor (5) is mounted on the clamp-type frame. The output shaft of the energy storage motor (5) is connected to the energy storage shaft (20) through the transmission assembly. The cam (16) is mounted on the energy storage shaft (20), and the energy storage retaining plate (7) cooperates with the cam (16). The energy storage clutch device includes a one-way clutch assembly, the driving end of the one-way clutch assembly is linked with the transmission assembly, and the driven end of the one-way clutch assembly is connected to the energy storage shaft (20). The closing holding device includes a tripping assembly, a reset elastic element, and an output shaft (24). The tripping assembly is hinged to the clamp-type frame, the reset elastic element is connected to the tripping assembly, and the tripping assembly is linked to the output shaft (24). The output shaft (24) is mounted on the clamp-type frame via an output shaft mounting assembly (26), and the output shaft (24) is reset and engaged with the closing holding assembly. The manual closing soft interlock device includes a manual operation component, a closing trigger component, and an interlock component; the manual operation component is slidably installed on the clamp-type frame, the manual operation component is driven to cooperate with the closing trigger component, the closing trigger component is correspondingly set with the energy storage holding buckle (7), and the interlock component is driven to cooperate with the closing trigger component.

2. The spring operating mechanism for a circuit breaker according to claim 1, characterized in that, The one-way clutch assembly includes a single-tooth ratchet (18), a top plate, and a large sprocket (17) that is linked to the transmission assembly. The single-tooth ratchet (18) is fixedly connected to the energy storage shaft (20), and the top plate is hinged to the large sprocket (17) through a pin (13). The top plate and the single-tooth ratchet (18) are engaged and disengaged. The single-tooth ratchet (18) and the top plate are built into the internal cavity of the large sprocket (17). The end of the large sprocket (17) is connected to a cover plate, which closes the internal cavity of the large sprocket (17). A top plate return spring is sleeved on the pin (13), and the two ends of the top plate return spring are respectively connected to the inner wall of the cavity of the top plate and the large sprocket (17).

3. The spring operating mechanism for a circuit breaker according to claim 2, characterized in that, The inner side of the first side plate (1) is provided with a limiting pin, which is correspondingly provided with the top plate.

4. The spring operating mechanism for a circuit breaker according to claim 1, characterized in that, The transmission assembly includes a small gear (2) and a large gear (3) that mesh with each other, and the large gear (3) is coaxially arranged with the large sprocket (17); The energy storage motor (5) is fixed to the second side plate (6). The output shaft of the energy storage motor (5) passes through the second side plate (6) and is fixedly connected to the pinion (2). The pinion (2) and the sprocket are integrally formed.

5. A spring operating mechanism for a circuit breaker according to claim 1, characterized in that, The energy storage shaft (20) extends horizontally through the clamp frame. Both ends of the energy storage shaft (20) are connected to the second side plate (6) via bearings. The energy storage shaft (20) is provided with a keyway. The single-tooth ratchet (18) and the cam (16) are fixedly connected to the energy storage shaft (20) via a flat key.

6. A spring operating mechanism for a circuit breaker according to claim 1, characterized in that, The tripping assembly includes a tripping plate (21) and a tripping half shaft (23). One end of the tripping plate (21) is provided with a snap-fit ​​protrusion, which is tripped and engaged with the tripping half shaft (23). The reset elastic element is a tension spring or a torsion spring.

7. A spring operating mechanism for a circuit breaker according to claim 1, characterized in that, The manual operation component includes a closing button (8) and a push rod (9). The closing trigger includes a closing push plate (12) and a joint (11). The interlocking component includes an interlocking plate. A mounting bracket (10) is installed on the clamp-type frame. The push rod (9) is slidably connected to the mounting bracket (10). The closing button (8) is connected to the push rod (9). The joint (11) is hinged to the closing push plate (12) by a pin (13). The push rod (9) cooperates with the joint (11). The interlocking plate contacts and cooperates with the joint (11).

8. A spring operating mechanism for a circuit breaker according to claim 7, characterized in that, The interlocking plate is connected to an interlocking plate return spring. The interlocking plate includes a first interlocking plate (14) and a second interlocking plate (15), and the first interlocking plate (14) and the second interlocking plate (15) are connected.

9. A spring operating mechanism for a circuit breaker according to claim 1, characterized in that, The outer ring of the cam (16) is provided with a first protrusion that contacts the energy storage retaining buckle (7). The first protrusion is disengaged from the energy storage retaining buckle (7). The output shaft (24) is provided with a second protrusion that is in transmission cooperation with the cam (16).

10. A method for operating a spring-operated mechanism for a circuit breaker, characterized in that, The spring operating mechanism for a circuit breaker as described in any one of claims 1-9 includes energy storage operation, closing operation, and opening operation, with the following specific steps: Energy storage operation: Start the energy storage motor (5) of the energy storage transmission device. The energy storage motor (5) drives the energy storage shaft (20) to rotate through the transmission component. The energy storage shaft (20) drives the cam (16) to rotate synchronously to complete energy storage. When the energy storage is in place, the one-way clutch component of the energy storage in place clutch device cuts off the power transmission from the transmission component to the energy storage shaft (20). At the same time, the energy storage holding plate (7) of the energy storage transmission device cooperates with the cam (16) to lock the energy storage shaft (20) in the energy storage in place state. Closing operation: The closing interlock is released by the interlocking component of the manual closing soft interlocking device, triggering the manual operation component. The manual operation component drives the energy storage holding plate (7) to disengage from the cam (16) through the closing trigger, releasing the lock on the energy storage shaft (20). The energy storage shaft (20) releases the stored energy and drives the output shaft (24) of the closing holding device to rotate, completing the circuit breaker closing. After closing, the opening tripping component and the closing holding component of the closing holding device are linked with the output shaft (24) to lock the output shaft (24) in the closed position. Opening operation: The opening trip component of the closing holding device is triggered to unlock, releasing the lock on the output shaft (24). The output shaft (24) rotates in the reverse direction to complete the circuit breaker opening. After the opening is completed, the closing holding component is reset under the action of the output shaft (24), and the opening trip component is reset to the ready-to-work state under the action of the reset elastic element. At the same time, the energy storage holding plate (7) is reset, waiting for the next energy storage operation.

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