Circuit breaker with remote local switching and reclosing functions

Abstract

The application relates to the field of circuit breakers, in particular to a circuit breaker with remote local switching and reclosing function. The circuit breaker with remote local switching and reclosing function comprises a shell assembly, a trip mechanism module is arranged in the shell assembly; the circuit breaker further comprises a remote local switching module and a reclosing module, the remote local switching module comprises a switching shaft penetrating the side wall of the shell assembly, the reclosing module comprises a switching shaft penetrating the side wall of the shell assembly, each part of the remote local switching module is arranged on the shell assembly and is independent of the trip mechanism module in physical structure; and / or each part of the reclosing module is arranged on the shell assembly and is independent of the trip mechanism module in physical structure. The application can use the existing trip mechanism module under the condition of meeting the reclosing and remote local switching functions, and is low in cost and convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of circuit breakers, and in particular to a circuit breaker with remote local switching and reclosing functions. Background Technology

[0002] To ensure the stable operation of the power grid, circuit breaker assemblies generally need to have reclosing and remote / local switching functions. Currently, these functions are mainly implemented through two methods: The first method involves adjusting the controller's interface to set the corresponding functions. However, this method requires personnel to climb to open the controller's cover, making the operation cumbersome and unsafe, as the controller is typically installed at a high location. The second method involves adding a reclosing module and a remote / local device to the circuit breaker body. This requires on-site personnel to pull down the reclosing handle and the remote / local handle using an insulated rod.

[0003] The second approach corresponds to a circuit breaker such as the one disclosed in Chinese Utility Model Patent No. CN214956680U, which is a primary and secondary integrated pole-mounted circuit breaker. It includes a housing assembly formed by a chassis, with a fixed pole on the housing assembly and an operating mechanism module inside. The circuit breaker also includes a remote-to-local switching module and a reclosing activation / deactivation module. The remote-to-local switching module includes a switching shaft extending outwards from the housing assembly. A torsion spring is fitted onto the switching shaft to provide a reset force, allowing the switching shaft to remain in a remote state. A switching crank arm is also connected to the switching shaft to drive the corresponding microswitch. The switching crank arm is connected to an elastic holding component to overcome the reset force on the switching shaft, keeping the remote-to-local switching module in a local state. When the circuit breaker is running, if it is necessary to switch between remote and local operating modes, the activation / deactivation operating handle is swung by an insulated operating rod, triggering the remote-to-local switching microswitch connected to the controller. The controller switches between local and remote operating modes based on the state of the remote-to-local switching microswitch. If reclosing is required, the reclosing operation handle is swung by the insulated operating rod, triggering the reclosing switching micro switch connected to the controller. The controller switches between local and remote operation modes according to the state of the reclosing micro switch.

[0004] Currently, the operating mechanism modules within circuit breakers are generally mature products on the market and can be directly purchased. However, if a reclosing activation / deactivation module and a remote / local switching device are required, the operating mechanism module needs to be customized due to the integrated design of most components of the remote / local device with the operating mechanism module, resulting in higher costs. Furthermore, if any component of the remote / local device malfunctions, the entire operating mechanism module must be removed for replacement, leading to a significant workload. After the operating mechanism module is reinstalled in the circuit breaker housing, the circuit breaker's mechanical characteristic parameters need to be readjusted, greatly increasing the workload of assembly and inspection personnel, reducing troubleshooting efficiency, increasing power outage time, and impacting customer satisfaction. Therefore, designing a circuit breaker with reclosing activation / deactivation and remote / local switching functions that reduces the workload of assembly and inspection personnel is of great significance. Summary of the Invention

[0005] The purpose of this invention is to provide a circuit breaker with remote local switching and reclosing enable / disable functions. While satisfying the reclosing enable / disable and remote local switching functions, it can use existing operating mechanism modules, which is low in cost and easy to maintain.

[0006] The circuit breaker with remote local switching and reclosing functions in this invention adopts the following technical solution:

[0007] A circuit breaker with remote local switching and reclosing activation / deactivation functions includes a housing assembly, a solid-sealed pole on the housing assembly, and an operating mechanism module inside the housing assembly. The circuit breaker also includes a remote local switching module and a reclosing activation / deactivation module. The remote local switching module includes a switching shaft penetrating the side wall of the housing assembly, and the reclosing activation / deactivation module includes an activation / deactivation shaft penetrating the side wall of the housing assembly. All components of the remote local switching module are mounted on the housing assembly and are physically independent of the operating mechanism module. And / or, all components of the reclosing activation / deactivation module are mounted on the housing assembly and are physically independent of the operating mechanism module.

[0008] The beneficial effects of the above technical solution are that all components of the remote-to-local switching module are mounted on the housing assembly, and are physically independent of the operating mechanism module; and / or, all components of the reclosing activation / deactivation module are mounted on the housing assembly, and are physically independent of the operating mechanism module. The remote-to-local switching module and / or the reclosing activation / deactivation module can exist independently of the operating mechanism module, so they can be installed and disassembled separately without affecting the setting of the original operating mechanism module. Compared with the prior art of mounting the remote-to-local switching module and / or the reclosing activation / deactivation module on the operating mechanism module, the existing operating mechanism module can be used, resulting in lower cost and easier maintenance.

[0009] As a further defined technical solution: a switching crank arm for driving the corresponding micro switch is connected to the switching shaft, and the switching crank arm is driven by an elastic holding component for overcoming the reset force on the switching shaft so that the remote-to-local switching module remains in a local state; the elastic holding component includes an intermediate transmission component, the middle of which is rotatably mounted on the housing assembly along its length, one end of which is hinged to a guide rod, and the other end is driven by the switching crank arm; the housing assembly is provided with a rotating seat, on which a guide rod guide seat is rotatably mounted, and the guide rod guide seat is provided with a guide insertion hole for the end of the guide rod away from the intermediate transmission component to be inserted and removed.

[0010] The beneficial effect of the aforementioned further defined technical solution is that the guide rod can be directly pulled out from the guide rod guide seat, which facilitates disassembly and maintenance.

[0011] As a further defined technical solution: the housing assembly includes a first sidewall through which the rotating shaft passes and a second sidewall arranged in an L-shape with the first sidewall. The rotating seat is formed by two vertical plates protruding from the inner wall of the second sidewall and arranged at intervals between each other. The guide rod guide seat is guided and assembled between the two vertical plates.

[0012] The beneficial effects of the above-mentioned further defined technical solution are that it can make reasonable use of the structure on the housing assembly, simplify the structure of the rotating seat, facilitate manufacturing, and have a simple structure.

[0013] As a further defined technical solution: the guide rod guide seat is a plate-shaped structure, and the guide insertion hole passes through the plate-shaped structure.

[0014] The beneficial effect of the above-mentioned further defined technical solution is that the plate structure is easy to process.

[0015] As a further refined technical solution: a spring seat is provided at one end of the guide rod near the intermediate transmission component, and a support spring is sleeved on the guide rod, with both ends of the support spring supported on the guide rod guide seat and the spring seat respectively.

[0016] The beneficial effect of the above-mentioned further defined technical solution is that it can facilitate the installation of the support spring.

[0017] As a further defined technical solution: the spring seat is formed by a flange structure provided on the guide rod.

[0018] The beneficial effect of the above-mentioned further defined technical solution is that the flange structure is simple to process and can provide stable support for the support spring.

[0019] As a further defined technical solution: the intermediate transmission component is provided with a guide elongated hole, and the switching crank arm is provided with a guide pin that guides and cooperates with the guide elongated hole and can rotate relative to the guide elongated hole.

[0020] The beneficial effect of the above-mentioned further defined technical solution is that the use of guide elongated holes facilitates processing and reduces costs.

[0021] As a further defined technical solution: the intermediate transmission component is a plate-shaped transmission connecting plate.

[0022] The beneficial effects of the aforementioned further defined technical solution are that it helps to reduce weight and facilitates processing.

[0023] As a further defined technical solution: the inner end of the engagement / disengagement shaft is connected to an engagement / disengagement crank arm, and the reclosing engagement / disengagement module also includes an engagement / disengagement module mounting plate fixed on the inner wall of the housing assembly. The engagement / disengagement shaft passes through the engagement / disengagement module mounting plate. The side of the engagement / disengagement module mounting plate facing away from the inner wall of the housing assembly is provided with an engagement / disengagement action micro switch corresponding to the engagement / disengagement switch trigger arm on the engagement / disengagement crank arm, and is also provided with a limit pin corresponding to the positioning arm on the engagement / disengagement crank arm, which is used to limit the forward and reverse extreme rotation positions of the engagement / disengagement shaft.

[0024] The beneficial effect of the aforementioned further defined technical solution is that the reclosing activation and deactivation module can be integrated through the activation and deactivation module mounting plate, which facilitates disassembly and maintenance.

[0025] As a further defined technical solution: the outer end of the deployment / retraction shaft is connected to a deployment / retraction operation handle, and both ends of the deployment / retraction operation handle are provided with hooking grooves for the insulating operation rod to hook and prevent the insulating operation rod from falling off the hook.

[0026] The beneficial effect of the aforementioned further defined technical solution is that the hanging groove can be used to hook the insulated operating rod to prevent it from falling off, thus improving the convenience of operation. Attached Figure Description

[0027] Figure 1 This is a front view of Embodiment 1 of the circuit breaker with remote local switching and reclosing functions in this invention;

[0028] Figure 2 yes Figure 1 Bottom view of the circuit breaker;

[0029] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the circuit breaker housing assembly;

[0030] Figure 4 This is a schematic diagram showing the arrangement of the remote-to-local switching module and the operating mechanism module;

[0031] Figure 5 This is a schematic diagram of the remote-to-local switching module in remote mode;

[0032] Figure 6 This is a schematic diagram of the remote-to-local switching module in local mode;

[0033] Figure 7 This is a structural diagram of the switching shaft and the switching crank arm;

[0034] Figure 8 This is a schematic diagram showing the correspondence between the front and back sides of the reclosing module in the reclosing deactivation state;

[0035] Figure 9 This is a schematic diagram showing the correspondence between the front and back sides of the reclosing activation / deactivation module when it is in the reclosing activation state;

[0036] Figure 10 This is a structural diagram of the throwing / retracting pivot and the throwing / retracting crank arm;

[0037] Figure 11 This is a schematic diagram of the deployment / retraction control handle;

[0038] Figure 12 This is a schematic diagram of the transmission and cooperation relationship between the remote-to-local switching module and the operating mechanism module.

[0039] The names of the components corresponding to the relevant reference numerals in the figure are as follows: 10. Housing assembly; 11. Front side wall; 12. Left side wall; 13. Remote / local indicator sign; 14. Reclosing engagement / disengagement sign; 15. Switching action limit pin; 16. Rotating seat; 17. Rotating shaft; 18. Fixing stud; 20. Solid sealing pole; 30. Operating mechanism module; 31. Opening trip plate; 32. Closing trip plate; 33. Opening electromagnet; 34. Closing electromagnet; 35. Electric trip plate; 40. Remote / local switching module; 41. Switching shaft; 42. Switching shaft copper sleeve; 43. Switching operating handle; 44. Switching crank arm; 441. Switching switch trigger arm; 442. Remote / local limit arm; 443. Holding arm; 444. Guide... 445. Pin; 446. Switch trigger rod; 45. Closing trigger rod; 46. Switching action micro switch; 47. Torsion spring; 48. Intermediate transmission component; 49. Guide rod; 410. Guide rod guide seat; 411. Support seat; 412. Support spring; 50. Reclosing engagement / disengagement module; 51. Engagement / disengagement module mounting plate; 52. Engagement / disengagement rotating shaft; 53. Engagement / disengagement operating handle; 531. Hook groove; 54. Engagement / disengagement crank arm; 541. Engagement / disengagement switch trigger arm; 542. Hook spring arm; 543. Engagement / disengagement limit arm; 544. Engagement / disengagement switch trigger rod; 545. Hook spring shaft; 55. Hook shaft; 56. Hook spring; 58. Engagement / disengagement action micro switch; 59. Engagement / disengagement action limit pin; 510. Engagement / disengagement copper sleeve. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0042] It should be noted that, in specific embodiments of the present invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising a…" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] In the description of this invention, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the body, or it can be separately arranged from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0045] The present invention will be further described in detail below with reference to embodiments.

[0046] Embodiment 1 of the circuit breaker with remote local switching and reclosing enable / disable functions in this invention:

[0047] like Figure 1 river Figure 2 As shown, the circuit breaker with remote local switching and reclosing enable / disable functions includes a housing assembly 10. A solid-sealed pole 20 is mounted on the top of the housing assembly 10, and an operating mechanism module 30 is provided inside the housing assembly 10. A remote local indicator 13 and a reclosing enable / disable indicator 14 are provided on the outer side of the front sidewall 11 of the housing assembly 10. The solid-sealed pole 20 and the operating mechanism module 30 can both adopt the structure of the prior art, which will not be described in detail here.

[0048] like Figure 2 , Figure 4 The circuit breaker also includes a remote-to-local switching module 40 and a reclosing enable / disable module 50. All components of the remote-to-local switching module 40 are mounted on the housing assembly 10, and are physically independent of the operating mechanism module 30; furthermore, all components of the remote-to-local switching module 40 are mounted on the housing assembly 10, and are physically independent of the operating mechanism module 30. The assembly structure of the remote-to-local switching module 40 and the reclosing enable / disable module 50 will be described in detail below.

[0049] The remote-to-local switching module 40 is used to switch between remote control and local control modes. When a line fault requires maintenance, the circuit breaker is manually tripped and in local mode. It can only be operated manually on-site and cannot be operated remotely from the backend to prevent accidental closing of the circuit breaker due to misoperation from the backend, which could cause an electric shock. Figure 3 , Figure 4 The remote-to-local switching module 40 is mounted on the front side wall 11 of the housing assembly 10, located on the left side of the front side wall 11. It includes a switching shaft 41 that passes through the front side wall 11 of the housing assembly 10. The outer end of the switching shaft 41 is connected to a switching operation handle 43, and the inner end is connected to a switching crank arm 44 for driving the corresponding micro switch. The switching crank arm 44 is connected to an elastic holding component for local holding. The remote-to-local switching module 40 also includes a switching action micro switch 45. The switching action micro switch 45 is fixed to a corresponding fixing stud 18 provided on the front side wall 11 of the housing assembly 10 through a support seat 411 formed by a Z-shaped bending plate. It is connected to the controller of the circuit breaker and is used to transmit switching signals to the controller.

[0050] like Figure 5 , Figure 6The switching shaft 41 of the remote-to-local switching module 40 passes through the switching shaft copper sleeve 42, which is fixed to the mounting hole on the front side wall 11 of the housing assembly 10, enabling the rotational assembly of the switching shaft 41. A torsion spring 46 is fitted on the switching shaft 41, with its two ends respectively adapted to the switching crank arm 44 and the housing assembly 10, providing a reset force to the switching shaft and keeping it in the remote state. Figure 7 The switching crank arm 44 is equipped with a switching switch trigger arm 441, a remote / local limit arm 442, and a holding arm 443. The switching switch trigger arm 441 is equipped with a switching switch trigger rod 445, which is perpendicular to the plane of the switching switch trigger arm 441 and is used to trigger the switching action micro switch 45 when the switching crank arm 44 and the switching shaft 41 swing to their respective positions; simultaneously, if... Figure 12 The switching trigger lever 445 also constitutes a tripping trigger lever, used to trigger the tripping release plate 31 on the operating mechanism module when the circuit breaker is manually tripped or switched to local state, so that the closing hold on the operating mechanism module is released, realizing the tripping action of the circuit breaker. The remote local limit arm 442 is used to limit the extreme swing positions of the switching crank arm 44 and the switching shaft 41, corresponding to the switching action limit pin 15 provided on the inner side of the front wall 11 of the housing assembly 10. Figure 4 , Figure 12 The remote local limit arm 442 is equipped with a closing trigger rod 446, which is perpendicular to the plane where the switching trigger arm 441 is located. When the circuit breaker is manually closed, released from local state, and switched to remote state, the closing trip plate 32 on the operating mechanism module is triggered, and the opening hold trip plate on the operating mechanism module is tripped, thus realizing the closing action of the circuit breaker. Both the opening trip plate 31 and the closing trip plate 32 are connected to corresponding rotating shafts on the operating mechanism module 30 to drive the corresponding rotating shafts to rotate. Manual opening and closing via the rotation of the corresponding rotating shafts is existing technology and will not be described in detail here. The operating mechanism module 30 is also equipped with an opening electromagnet 33 and a closing electromagnet 34 for automatic opening and closing operations. The output end of the opening electromagnet 33 corresponds to the opening trip plate 31, and the closing electromagnet 34 corresponds to the electric trip plate 35. The electric trip plate 35 and the closing trip plate 32 are fixed on the same rotating shaft and can both drive the rotating shaft to rotate.

[0051] A guide pin 444 is provided on the retaining arm 443 for fitting with the elastic retaining assembly. The elastic retaining assembly includes an intermediate transmission member 47, a guide rod 48, and a rotating seat 16. The intermediate transmission member 47 is a transmission connecting plate, with its middle part rotatably mounted on a rotating shaft 17 provided on the housing assembly 10 in the length direction; the right end of the intermediate transmission member 47 is provided with a guide elongated hole 49, and the guide pin 444 on the switching crank arm 44 guides and engages with the guide elongated hole 49 and can rotate relative to the guide elongated hole 49, realizing the transmission connection between the intermediate transmission member 47 and the switching crank arm 44. The left end of the intermediate transmission member 47 is hinged to the guide rod 48, and the guide rod 48 is guided and inserted into the guide rod guide seat 410. The guide rod guide seat 410 is a plate-shaped structure with a through-hole guide insertion hole for the end of the guide rod 48 away from the intermediate transmission member 47 to be guided and inserted and pulled out. The guide rod guide seat 410 has hinge shafts on two opposite sides, which are rotatably mounted on a rotating seat 16 on the left side wall 12 of the housing assembly 10. The rotating seat 16 is formed by two vertical plates protruding from the inner side of the left side wall 12 and arranged at intervals. The guide rod guide seat 410 is guided and mounted between the two vertical plates. The guide rod 48 has a flange structure at one end near the intermediate transmission member 47. The flange structure forms a spring seat. A support spring 412 is sleeved on the guide rod 48. The two ends of the support spring 412 are supported on the guide rod guide seat 410 and the spring seat, respectively. When the circuit breaker is switched to the local state, the support spring 412 is in a compressed state, overcoming the reaction force of the torsion spring 46 on the switching shaft 41, and the circuit breaker remains in the local (open) state. When the circuit breaker needs to be closed after maintenance, it is manually closed. At this time, the circuit breaker is released from the local state, the support spring 412 is in a relaxed state, and the switching shaft 41, under the reset force of the torsion spring 46, makes the switching operation handle 43 return to the horizontal state.

[0052] like Figure 2 , Figure 3 , Figure 8 and Figure 9 The reclosing engagement / disengagement module 50 is also integrally mounted on the front side wall 11 of the housing assembly 10, located on the right side of the front side wall 11. It includes an engagement / disengagement module mounting plate 51 and an engagement / disengagement rotating shaft 52 that penetrates the front side wall 11 of the housing assembly 10. The engagement / disengagement module mounting plate 51 is fixed to a corresponding fixing stud 18 provided on the inner wall of the front side wall 11 of the housing assembly 10. The engagement / disengagement rotating shaft 52 passes through an engagement / disengagement copper sleeve 510, which is fixed to an assembly hole provided on the front side wall 11 of the housing assembly 10, enabling the rotational assembly of the engagement / disengagement rotating shaft 52. An engagement / disengagement operation handle 53 is connected to the outer end of the engagement / disengagement rotating shaft 52, and an engagement / disengagement crank arm 54 is connected to the inner end. Figure 8 , Figure 11 The two ends of the engagement / disengagement operating handle 53 are provided with hooking grooves 531 for the insulated operating rod to be hooked to prevent the insulated operating rod from detaching. The engagement / disengagement crank arm 54 includes an engagement / disengagement switch trigger arm 541, a spring arm 542, and an engagement / disengagement limit arm 543. Figure 10The engagement / disengagement switch trigger arm 541 is equipped with an engagement / disengagement switch trigger rod 544, which is perpendicular to the plane of the engagement / disengagement switch trigger arm 541. This rod is used to trigger the engagement / disengagement microswitch 58 when the engagement / disengagement crank arm 54 and the engagement / disengagement rotating shaft 52 swing into position. The spring arm 542 is equipped with a spring shaft 545, which is perpendicular to the engagement / disengagement crank arm 54. One axial end of the corresponding spring 56 is attached to the spring shaft 545, and the other end is attached to the mounting shaft 55 on the engagement / disengagement module mounting plate 51. Similar to existing structures, the spring 56 allows the crank arm to maintain its position by utilizing a dead point when the relative positions of the spring shaft 545, the mounting shaft 55, and the rotation center of the engagement / disengagement crank arm 54 change. The engagement / disengagement limit arm 543 is used to limit the extreme swing positions of the engagement / disengagement crank arm 54 and the engagement / disengagement shaft 52. It corresponds to the two engagement / disengagement action limit pins 59 set on the engagement / disengagement module mounting plate 51, respectively limiting the reclosing engagement limit position and the reclosing disengagement limit position of the engagement / disengagement crank arm 54. The engagement / disengagement action micro switch 58 in the remote local switching module 40 is directly fixed on the side of the engagement / disengagement module mounting plate 51 facing away from the inner wall of the housing assembly 10, and is connected to the circuit breaker controller to transmit the reclosing engagement / disengagement signal to the controller.

[0053] The prior art uses a switching action micro switch 45 and an engagement / disengagement action micro switch 58 connected to the controller to achieve remote and local switching and reclosing engagement / disengagement respectively. The Chinese utility model patent with authorization announcement number CN214956680U cited in the background art discloses a primary and secondary integrated pole-mounted circuit breaker that uses the aforementioned switching action micro switch 45 and engagement / disengagement action micro switch 58.

[0054] When the circuit breaker needs to be operated locally, by pulling down the "open" side pull ring of the switching operation handle 43, the remote local switching module 40 is driven to move counterclockwise. The switching crank arm 44 drives the intermediate transmission component 47, and the intermediate transmission component 47 drives the guide rod 48 to move upward. When the support spring 412 returns to its natural state, the upper end of the remote local limit arm 442 of the switching crank arm 44 abuts against the corresponding switching action limit pin 15. At the same time, the switching switch trigger rod 445 on the switching switch trigger arm 441 presses down the trigger plate of the switching action micro switch 45, and the opening and closing points of the switching action micro switch 45 are switched, transmitting the signal to the controller.

[0055] When the circuit breaker needs to be operated remotely, by pulling down the "close" side pull ring of the switching operation handle 43, the remote local switching module 40 is driven to rotate clockwise. The switching crank arm 44 drives the intermediate transmission component 47, which in turn drives the guide rod 48 to move upward. When the support spring 412 returns to its natural state, the lower end of the remote local limit arm 442 of the switching crank arm 44 abuts against the corresponding switching action limit pin 15. At the same time, the switching switch trigger rod 445 on the switching switch trigger arm 441 releases the trigger plate of the switching action micro switch 45, and the opening and closing points of the switching action micro switch 45 are switched, transmitting the signal to the controller.

[0056] When the circuit breaker needs to be deactivated for reclosing, the reclosing operation handle 53 is pulled down to the pull ring on the "reclosing deactivation" side, causing the reclosing operation module 50 to rotate clockwise. Under the tension of the spring 56, the reclosing limit arm 543 of the reclosing crank arm 54 moves to be tangent to the upper reclosing action limit pin 59. At this time, the reclosing switch trigger rod 544 presses down on the trigger plate of the reclosing action micro switch 58, switching the opening and closing points of the reclosing action micro switch 58 and transmitting the signal to the controller.

[0057] When the circuit breaker needs to be deactivated for reclosing, the reclosing operation handle 53 is pulled down to the pull ring on the "reclosing on" side, causing the reclosing operation module 50 to rotate counterclockwise. Under the tension of the spring 56, the reclosing limit arm 543 of the reclosing crank arm 54 moves to tangent to the lower reclosing action limit pin 59. At this time, the reclosing switch trigger rod 544 releases the trigger plate of the reclosing action micro switch 58, switching the opening and closing points of the reclosing action micro switch 58 and transmitting the signal to the controller.

[0058] Embodiment 2 of the circuit breaker with remote local switching and reclosing enable / disable functions in this invention:

[0059] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, all components of the remote-to-local switching module and the reclosing activation / deactivation module 50 are mounted on the housing assembly 10, and are physically independent of the operating mechanism module 30. In this embodiment, only the components of the remote-to-local switching module are mounted on the housing assembly 10, and are physically independent of the operating mechanism module 30. In other embodiments, only the components of the reclosing activation / deactivation module 50 may be mounted on the housing assembly 10, and are physically independent of the operating mechanism module 30.

[0060] Embodiment 3 of the circuit breaker with remote local switching and reclosing enable / disable functions in this invention:

[0061] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the guide rod 48 in the elastic retaining assembly can be guided and inserted into the guide rod guide seat 410 and can be pulled out. In this embodiment, the elastic retaining assembly adopts the same structure as the elastic retaining assembly disclosed in Chinese Utility Model Patent No. CN214956680U cited in the background art, but it is assembled on the housing assembly 10.

[0062] Embodiment 4 of the circuit breaker with remote local switching and reclosing enable / disable functions in this invention:

[0063] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the intermediate transmission component 47 in the elastic retaining assembly is a plate-shaped transmission connecting plate. In this embodiment, however, the intermediate transmission component 47 in the elastic retaining assembly adopts the same structure as the elastic retaining assembly disclosed in Chinese Utility Model Patent No. CN214956680U cited in the background section.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A circuit breaker with remote local switching and reclosing activation / deactivation functions, comprising a housing assembly (10), a solid-sealed pole (20) provided on the housing assembly (10), and an operating mechanism module (30) provided inside the housing assembly (10); the circuit breaker further comprises a remote local switching module (40) and a reclosing activation / deactivation module (50), the remote local switching module (40) comprising a switching shaft (41) penetrating the side wall of the housing assembly (10), and the reclosing activation / deactivation module (50) comprising an activation / deactivation shaft (52) penetrating the side wall of the housing assembly (10), characterized in that, The corresponding rotating shaft on the operating mechanism module is connected to the tripping plate and the closing plate. All components of the remote local switching module (40) are set on the housing assembly (10) and are physically independent from the operating mechanism module (30). The switching shaft is connected to the switching crank arm for driving the corresponding micro switch action. The switching crank arm is provided with a switching switch trigger arm and a remote local limit arm. The switching switch trigger arm is provided with a switching switch trigger rod that constitutes the tripping trigger rod. The switching switch trigger rod is used to trigger the tripping plate on the operating mechanism module when the circuit breaker switches to the local state. The remote local limit arm is provided with a closing trigger rod for triggering the closing plate on the operating mechanism module when the circuit breaker releases the local state and switches to the remote state. And / or, all components of the reclosing activation / deactivation module (50) are set on the housing assembly (10) and are physically independent from the operating mechanism module (30).

2. The circuit breaker with remote local switching and reclosing functions according to claim 1, characterized in that, The switching crank arm (44) is connected to an elastic holding component to overcome the reset force on the switching shaft (41) so that the remote local switching module (40) is kept in local state; the elastic holding component includes an intermediate transmission component (47), which is rotatably mounted on the housing assembly (10) in the middle of its length direction. One end of the intermediate transmission component (47) is hinged to a guide rod (48), and the other end is connected to the switching crank arm (44); the housing assembly (10) is provided with a rotating seat (16), and a guide rod guide seat (410) is rotatably mounted on the rotating seat (16). The guide rod guide seat (410) is provided with a guide insertion hole for the guide rod (48) to be inserted and pulled out away from the intermediate transmission component (47).

3. The circuit breaker with remote local switching and reclosing functions according to claim 2, characterized in that, The housing assembly (10) includes a first sidewall through which the rotating shaft passes and a second sidewall arranged in an L-shape with the first sidewall. The rotating seat (16) is formed by two vertical plates protruding from the inner wall of the second sidewall and arranged at intervals between each other. The guide rod guide seat (410) is guided and assembled between the two vertical plates.

4. The circuit breaker with remote local switching and reclosing functions according to claim 2 or 3, characterized in that, The guide rod guide seat (410) is a plate-shaped structure, and the guide insertion hole passes through the plate-shaped structure.

5. The circuit breaker with remote local switching and reclosing functions according to claim 2 or 3, characterized in that, A spring seat is provided at one end of the guide rod (48) near the intermediate transmission component (47), and a support spring (412) is sleeved on the guide rod (48). The two ends of the support spring (412) are respectively supported on the guide rod guide seat (410) and the spring seat.

6. The circuit breaker with remote local switching and reclosing functions according to claim 5, characterized in that, The spring seat is formed by a flange structure provided on the guide rod (48).

7. The circuit breaker with remote local switching and reclosing functions according to claim 2 or 3, characterized in that, The intermediate transmission component (47) is provided with a guide hole (49), and the switching crank arm (44) is provided with a guide pin (444) that guides and cooperates with the guide hole (49) and can rotate relative to the guide hole (49).

8. The circuit breaker with remote local switching and reclosing functions according to claim 2 or 3, characterized in that, The intermediate transmission component (47) is a plate-shaped transmission connecting plate.

9. The circuit breaker with remote local switching and reclosing functions according to claim 1, 2, or 3, characterized in that, The inner end of the engagement / disengagement shaft (52) is connected to the engagement / disengagement crank arm (54). The reclosing engagement / disengagement module (50) also includes an engagement / disengagement module mounting plate (51) fixed on the inner wall of the housing assembly (10). The engagement / disengagement shaft (52) passes through the engagement / disengagement module mounting plate (51). The engagement / disengagement module mounting plate (51) is provided with an engagement / disengagement action micro switch (58) corresponding to the engagement / disengagement switch trigger arm (541) on the engagement / disengagement crank arm (54) on the side facing away from the inner wall of the housing assembly (10). It is also provided with a limit pin corresponding to the positioning arm on the engagement / disengagement crank arm (54) to limit the forward and reverse extreme rotation positions of the engagement / disengagement shaft (52).

10. The circuit breaker with remote local switching and reclosing functions according to claim 9, characterized in that, The outer end of the engagement / disengagement shaft (52) is connected to an engagement / disengagement operation handle (53). Both ends of the engagement / disengagement operation handle (53) are provided with hooking grooves for the insulating operation rod to hook and prevent the insulating operation rod from coming off the hook.

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