Operating mechanism for reclosers

Abstract

The application relates to the technical field of reclosers, and discloses an operating mechanism for a recloser, which comprises a base frame, a closing transmission module, a closing drive module, a closing holding module, a closing energy storage module, a closing decoupling module and a closing output module.

Description

Technical Field

[0001] This application relates to the technical field of reclosers, and in particular to operating mechanisms for reclosers. Background Technology

[0002] A recloser typically includes a permanent magnet, a coil, a moving iron core, and a contact system. In the closed state, the coil is forward-energized, generating a magnetic field that drives the moving iron core to move, while the permanent magnet provides magnetic force to hold the moving iron core in the closed position. In the open state, the coil is reverse-energized, generating a reverse magnetic field that cancels out the permanent magnet attraction, and the moving iron core quickly opens under the action of spring force.

[0003] However, the core components of the permanent magnet mechanism are rare-earth permanent magnets such as neodymium iron boron, which are highly dependent on rare-earth resources. Export policies, trade frictions, or geopolitical changes can directly lead to raw material supply disruptions and significant price fluctuations, resulting in unstable raw material supply for recloser production. Furthermore, rare-earth permanent magnets have a low Curie temperature, and their magnetism may weaken under high-temperature environments. Coil malfunctions, power supply abnormalities, or magnetic field interference can all affect operational reliability and potentially lead to unexpected tripping. Moreover, permanent magnets are susceptible to magnetic degradation due to long-term vibration and impact, and their operational characteristics may become erratic in the later stages of the equipment's lifespan, requiring frequent maintenance and calibration. Summary of the Invention

[0004] This application provides an operating mechanism for a recloser, which adopts the following technical solution: An operating mechanism for a recloser includes: Base frame; The closing transmission module includes a transmission frame and an output component; the transmission frame is movable on the base frame and moves between its corresponding closing position and opening position; the output component is simultaneously linked with the transmission frame and the recloser moving contact, so that when the transmission frame is in the closing position, the recloser closes, and when the transmission frame is in the opening position, the recloser opens. The closing drive module, which is in drive cooperation with the transmission frame, is used to drive the transmission frame to move to the closing position in response to the closing command; The closing holding module includes a first locking component and a second locking component; the first locking component is linked to the transmission frame and operates under the drive of the transmission frame, and the second locking component is connected to the base frame; the first locking component and the second locking component form a mechanical lock after the recloser is closed, so as to keep the transmission frame in the closed position; The tripping module is used to trigger the first locking component and the second locking component to unlock in response to a tripping command; and The tripping energy storage module is linked with the closing transmission module. During the closing action, it synchronously stores elastic potential energy and releases the stored elastic potential energy when the first locking component and the second locking component are triggered to unlock, so as to drive the transmission frame to move to the tripping position.

[0005] In the above technical solution, by setting up a closing transmission module, a closing drive module, a closing holding module, a opening tripping module, and an opening energy storage module in synergy, a complete working cycle of electromagnetic drive closing, mechanical latch holding, and flexible energy storage opening is achieved. Closing requires only a momentary energization, avoiding long-term coil heating. Closing holding relies on mechanical latches, eliminating the need for permanent magnets and removing potential risks such as reliance on rare earth materials, high-temperature demagnetization, and vibration-induced magnetic decay. Opening relies on flexible energy storage for release, ensuring reliable and rapid action. The overall structure is low-cost and highly adaptable.

[0006] Optionally, the transmission frame includes a transmission crank arm, a main tie rod, a first connecting plate, and a second connecting plate; The transmission crank arm is rotatably connected to the base frame. The transmission crank arm has a transmission abutment part and a transmission hinge part. The transmission abutment part is opposite to the output end of the closing drive module, and the transmission hinge part is hinged to one end of the first connecting plate. The main tie rod moves along a straight line on the base frame, and the end of the first connecting plate away from the transmission hinge is hinged to the main tie rod; the opposite ends of the second connecting plate are respectively hinged to the output component and the main tie rod.

[0007] In the above technical solution, the transmission frame adopts a combination structure of transmission crank arm, main tie rod, first connecting plate and second connecting plate, which converts the motion of the closing drive module into the linear movement of the main tie rod, and then converts it into the motion of the output component through the second connecting plate, thus realizing the reasonable conversion of the power transmission direction.

[0008] Optionally, the closing drive module includes a closing electromagnetic drive component, which is mounted on the base frame. When it receives a closing command, it generates electromagnetic force to drive its output end to move the transmission frame.

[0009] In the above technical solution, the closing drive module uses a closing electromagnetic drive component. Upon receiving a closing command, it is momentarily energized to generate electromagnetic force, which drives the transmission frame to complete the closing action. After closing, the power is immediately cut off. This instantaneous energization method reduces the heat generation, aging, and energy consumption problems caused by long-term coil energization. At the same time, the electromagnetic structure only serves as a power input rather than a holding component, eliminating the dependence on permanent magnets.

[0010] Optionally, the first locking component includes The main crank arm for closing the circuit breaker is rotatably connected to the base frame and driven to rotate by the transmission frame; The closing crank arm is rotatably connected to the main closing crank arm in the middle, with one end serving as the working end; and The crank arm reset component is connected between the main closing crank arm and the secondary closing crank arm, and is used to give the secondary closing crank arm a tendency to lock with the second locking component through the working end.

[0011] In the above technical solution, the main closing crank arm rotates under the drive of the transmission frame, and the closing secondary crank arm maintains the tendency to lock with the second locking component through the crank arm reset component, forming a reliable mechanical linkage locking structure.

[0012] Optionally, the crank arm reset member provides a tendency for the closing crank arm to rotate in a first direction, and the closing main crank arm is provided with a limiting structure that limits the relative rotation range of the closing crank arm; the second locking component includes... The tripping latch plate is rotatably connected to the base frame in the middle, and has a locking surface at one end; and A limiting component is provided on the base frame and located in the path of the opening latch plate rotating in the second direction; Wherein, the second direction is opposite to the first direction. When the transmission frame moves toward the closed position, it drives the main closing crank arm to rotate along the first direction, so that the closing position moves from the working end of the crank arm to abut against the locking surface. During the process, the working end pushes the opening latch plate to rotate along the second direction to abut against the limiting member. The limiting member restricts the opening latch plate from continuing to rotate along the second direction to unlock, so as to maintain the closed position of the transmission frame.

[0013] In the above technical solution, during the closing process, the closing arm can be blocked and stored by the opening buckle plate at the working end. After passing the critical point, it pops out instantly and presses against the locking surface. At the same time, the opening buckle plate is blocked by the limit component and cannot continue to rotate, so that the entire locking structure is in a stable and balanced state, realizing reliable mechanical self-locking. The locking is responsive, stable, and not easily disengaged due to vibration or external interference.

[0014] Optionally, the second locking component further includes a latch plate reset member, which is connected between the base frame and the trip latch plate to give the trip latch plate a tendency to rotate and reset along the first direction.

[0015] In the above technical solution, the buckle plate reset component is used to drive the trip buckle plate to automatically reset to the initial position after tripping, so as to prepare for the next closing latch, thereby improving the automatic reset capability and action continuity of the mechanism.

[0016] Optionally, the limiting member is rotatably connected to the base frame and has an arc surface and a tangent plane that are continuous along the rotation direction; when the transmission frame holds the closed position, the opening latch plate abuts against the arc surface; when the limiting member rotates under the drive of the opening trip module until the tangent plane is opposite to the opening latch plate, the opening latch plate can continue to rotate along the second direction so that the opening latch plate separates from the closed position from the crank arm; The second locking component further includes a half-shaft reset member, which is connected between the base frame and the limiting member, and gives the limiting member a tendency to rotate and reset to abut against the opening buckle plate with the arc surface.

[0017] In the above technical solution, the limiting component adopts a rotating structure with an arc surface and a tangent plane. When the circuit is closed and held, the limiting component abuts against the tripping plate with its arc surface, providing a stable blocking effect. When the tripping module drives the limiting component to rotate until the tangent plane is opposite to the tripping plate, the tripping plate can continue to rotate in the second direction, realizing the separation from the closing crank arm. The half-shaft reset component is connected between the base frame and the limit component, giving the limit component a tendency to abut against the tripping plate with an arc surface. This ensures that the limit component is always in a stable locked position when not tripped, preventing accidental tripping caused by vibration or external force. It can also automatically reset when the tripping module is disconnected from the drive.

[0018] Optionally, the tripping module includes The tripping electromagnetic actuator, mounted on the base frame, generates electromagnetic force upon receiving a tripping command to drive its output terminal to move, thereby triggering the first locking component and the second locking component to unlock; and / or A tripping mechanical drive unit, movable on the base frame, is moved by a pushing force to trigger the first locking component and the second locking component to unlock.

[0019] In the above technical solution, the electromagnetic drive component is used to receive electrical tripping commands to achieve remote automatic tripping, while the mechanical drive component is used for manual operation to achieve on-site emergency tripping or maintenance tripping. The two drive methods complement each other, meeting the needs of automated control of the recloser while providing a means of manual intervention, thus improving the operational flexibility and safety reliability of the equipment under various operating conditions.

[0020] Optionally, the tripping energy storage module includes An energy storage component includes a mounting base and a tripping elastic element; the mounting base is mounted on the base frame, and the tripping elastic element is located within the mounting base; and The tripping crank arm includes a first mating part, a rotating part, and a second mating part; the rotating part is located between the first mating part and the second mating part, and the tripping crank arm is rotatably connected to the base frame through the rotating part; the first mating part mates with the output component, and the second mating part mates with the tripping elastic component; During the closing operation, the first cooperating part is pushed by the output component to drive the opening crank arm to rotate, while the second cooperating part compresses the opening elastic element to store elastic potential energy.

[0021] In the above technical solution, during the closing operation, the movement of the output component synchronously drives the opening crank arm to rotate and compress the spring to complete energy storage. No additional energy storage motor or operation is required, resulting in a simple structure and high energy conversion efficiency. During opening, the spring releases energy to drive the output component to quickly reset, resulting in fast opening speed.

[0022] Optionally, the operating mechanism for the recloser further includes a buffer module, which is disposed on the opening action path of the transmission frame and / or the first locking component, for absorbing impact energy during opening.

[0023] In the above technical solution, the buffer module is set on the opening action path of the transmission frame and / or the first locking component, which reduces the vibration and noise generated by the opening action, reduces the impact wear of the parts, extends the overall mechanical life of the mechanism, and improves the smoothness of the recloser opening process.

[0024] In summary, this application includes at least one of the following beneficial effects: 1. The closing mechanism uses instantaneous electromagnetic drive, the closing holding mechanism uses a purely mechanical locking structure, and the opening mechanism relies on the release of stored elastic potential energy, eliminating the need for permanent magnets for holding, thus improving the production stability and operational reliability of the equipment. 2. Through the linkage of the closing transmission module, the closing holding module and the opening energy storage module, the opening energy storage is completed synchronously during the closing action. No additional energy storage mechanism or energy storage motor is required. The structure is compact and the energy utilization rate is high. At the same time, it realizes the dual tripping methods of remote electromagnetic tripping and manual mechanical tripping, which is flexible in operation and has high safety redundancy. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of an embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of the embodiment of this application when it is in the open state; Figure 3 This is a schematic diagram of the internal structure of the embodiment of this application when it is in the closed state; Figure 4 This is a schematic diagram of the closing electromagnetic drive component in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the transmission frame, output component and energy storage component after the guide seat corresponding to an output component is hidden in the embodiment of this application; Figure 6 This is a top view of the first locking component in an embodiment of this application; Figure 7 This is a schematic diagram of the structure when the first locking component and the second locking component are unlocked in an embodiment of this application; Figure 8 This is a schematic diagram of the structure when the first locking component and the second locking component are locked together in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the second locking component in an embodiment of this application; Figure 10 This is a schematic diagram of the structure of the limiting member and the tripping mechanical drive member in the embodiments of this application; Figure 11 This is a perspective view of the energy storage component in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of the oil buffer body and the oil buffer crank arm in the embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Base frame; 2. Transmission frame; 21. Transmission crank arm; 22. Main tie rod; 23. First connecting plate; 24. Second connecting plate; 3. Output component; 31. Rocker arm; 32. Connector; 4. First locking assembly; 41. Closing main crank arm; 42. Closing slave crank arm; 43. Slave crank arm reset component; 5. Second locking assembly; 51. Opening latch plate; 52. Limiting component; 521. Tripping half shaft; 522. First extension seat; 523. Second extension seat; 53. Latch plate reset component; 54. Half shaft reset component; 6. Transmission abutment part; 7. Transmission hinge part; 8. Closing electromagnetic drive component; 9. Movable end; 10. Working end; 11. 11. Movable groove; 12. Locking surface; 13. Arc surface; 14. Cutting plane; 15. Tripping electromagnetic drive component; 16. Tripping mechanical drive component; 17. Energy storage component; 171. Mounting base; 172. Tripping elastic component; 18. Tripping crank arm; 181. First mating part; 182. Rotating part; 183. Second mating part; 19. Guide seat; 20. First guide groove; 25. Guide shaft; 26. Second guide groove; 27. Third connecting plate; 28. Limiting shaft; 29. ​​Connecting rod; 291. Connecting rod; 292. Lower pressure seat; 30. Oil buffer body; 33. Oil buffer crank arm; 34. Outer shell; 35. Upper mounting cavity; 36. Lower mounting cavity. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-12 This application will be described in further detail.

[0028] This application discloses an operating mechanism for a recloser. (Refer to...) Figure 1 , Figure 2 and Figure 3 The operating mechanism for the recloser includes a base frame 1 and a closing transmission module, a closing drive module, a closing holding module, a tripping module, a tripping energy storage module, and a buffer module mounted on the base frame 1. The base frame 1 provides the installation reference and movement limit for each functional module, and the modules form a complete closing and opening execution system through mechanical linkage.

[0029] Reference Figure 2 and Figure 4 The closing drive module includes a closing electromagnetic drive component 8, which is mounted on the base frame 1 via a base. The closing electromagnetic drive component 8 has an output end that moves in a linear direction when a coil is energized. When the closing electromagnetic drive component 8 receives a closing command, its internal coil is energized, generating an axial electromagnetic thrust that propels its output end upwards rapidly. This linear driving force is then transmitted to the closing transmission module through its output end, completing the power input for the closing action. After the closing action is completed, the coil is immediately de-energized, the electromagnetic thrust disappears, and the output end of the closing electromagnetic drive component 8 can return to its original position by gravity. This instantaneous energization method reduces the heat generation and aging problems caused by long-term coil energization, lowering the energy consumption of the mechanism. Furthermore, by using only the electromagnetic structure as the closing power input, rather than a component for maintaining the closed state, it eliminates the dependence on permanent magnets, making it less susceptible to fluctuations in rare earth raw material supply and less prone to inherent defects such as high-temperature demagnetization and vibration-induced magnetic decay caused by permanent magnets. The closing electromagnetic drive component 8 uses a common electromagnetic actuator structure, the specific structure of which will not be described in detail here.

[0030] Reference Figure 2 , Figure 3 and Figure 5 The closing transmission module includes a transmission frame 2 and an output component 3. The transmission frame 2 includes a transmission crank arm 21 rotatably connected to the rotating shaft of the base frame 1, a main pull rod 22, a first connecting plate 23, and a second connecting plate 24. The main pull rod 22 is slidably mounted on the base frame 1 through a guide structure. Specifically, there are two symmetrical main pull rods 22. The base frame 1 includes multiple guide seats 19 spaced apart along the length direction of the main pull rod 22. The guide seats 19 are U-shaped, and a first guide groove 20 is opened on the guide seats 19 along the length direction of the main pull rod 22 (i.e., the transverse direction in the figure). The main pull rod 22 cooperates with the first guide groove 20 through a pin, so that the main pull rod 22 can move between its corresponding closing position and opening position along its own length direction. When the main pull rod 22 is in the closing position, the recloser closes, and the pin abuts against one end of the first guide groove 20; when the main pull rod 22 is in the opening position, the recloser opens, and the pin abuts against the other end of the first guide groove 20.

[0031] The transmission crank arm 21 is triangular in shape. One end of the triangular portion of the transmission crank arm 21 is rotatably connected to the base frame 1, and the other two ends are the transmission abutment portion 6 and the transmission hinge portion 7, respectively. The transmission crank arm 21 is opposite to the output end of the closing electromagnetic drive component 8 through the transmission abutment portion 6, and is hinged to the first connecting plate 23 through the transmission hinge portion 7. The end of the first connecting plate 23 away from the transmission hinge portion 7 is located between the two main tie rods 22 and is simultaneously hinged to both main tie rods 22, making the two main tie rods 22 a single unit. The rotation axis between the transmission crank arm 21 and the base frame 1, the hinge axis between the transmission crank arm 21 and the first connecting plate 23, and the hinge axis between the first connecting plate 23 and the main tie rods 22 are all parallel.

[0032] Output components 3 can be one or multiple components spaced apart along the length of the transmission frame 2. In this embodiment, there are three output components 3. Each output component 3 includes a rocker arm 31 and a connector 32. The rocker arm 31 is fixedly sleeved on the connector 32. The connector 32 extends along the length of the main pull rod 22. A guide shaft 25 is fixed to one end of the connector 32 near the main pull rod 22. A second guide groove 26 is provided on the guide seat 19 for the guide shaft 25 to slide along the length of the main pull rod 22 (i.e., vertically in the figure). The end of the connector 32 away from the main pull rod 22 is linked with the moving contact of the reconciler. At the same time, one end of the second connecting plate 24 is hinged to the connector 32 by rotating it onto the guide shaft 25, and the other end of the second connecting plate 24 is hinged to the main pull rod 22. The hinge axes at both ends of the second connecting plate 24 are parallel.

[0033] When the output end of the closing electromagnetic drive 8 extends upward, it pushes the transmission abutment part 6, causing the transmission crank arm 21 to rotate counterclockwise (towards...). Figure 5 (As a reference description), the main pull rod 22 is pulled horizontally in a preset direction by the first connecting plate 23, and then transmitted by the second connecting plate 24, pushing the output component 3 to move upward in a straight line in the closing direction, and finally driving the recloser moving contact to complete the closing action.

[0034] Reference Figure 2 The closing holding module includes a first locking component 4 and a second locking component 5. The first locking component 4 is linked to the transmission frame 2 and operates under the drive of the transmission frame 2, while the second locking component 5 is connected to the base frame 1. After the circuit is closed, the two components form a mechanical lock, keeping the transmission frame 2 in the closed position.

[0035] Reference Figure 6 , Figure 7 and Figure 8Specifically, the first locking assembly 4 includes a main closing crank arm 41, a secondary closing crank arm 42, and a secondary closing crank arm reset component 43. The main closing crank arm 41 is rotatably connected to the base frame 1 via a pivot. A third connecting plate 27 is hinged to the main closing crank arm 41, with one end of the third connecting plate 27 hinged to the main pull rod 22, allowing the main closing crank arm 41 to rotate as the main pull rod 22 moves. The middle part of the secondary closing crank arm 42 is rotatably connected to the main closing crank arm 41. The hinge axes between the main closing crank arm 41 and the third connecting plate 27, as well as between the main closing crank arm 41 and the secondary closing crank arm 42, are parallel. Furthermore, the hinge axes of the first connecting plate 23, the second connecting plate 24, and the third connecting plate 27 are all parallel.

[0036] Meanwhile, the two ends of the closing crank arm 42 are the movable end 9 and the working end 10, respectively. The closing main crank arm 41 is provided with a limiting structure that limits the relative rotation range of the closing crank arm 42. In this embodiment, the limiting structure is a movable groove 11 opened on the closing main crank arm 41. The movable groove 11 is circular and its size is larger than that of the movable end 9. The movable end 9 moves in the movable groove 11. The movable groove 11 provides a small range of movement for the closing crank arm 42. In other embodiments, the limiting structure can also be set as a column fixed on the closing main crank arm 41 and located in the rotation path of the closing crank arm 42. The movable end 9 of the closing crank arm 42 restricts the rotation by abutting against the columnar limiting structure.

[0037] The crank arm reset component 43 uses a tension spring, with its two ends connected to the moving end 9 of the closing main crank arm 41 and the closing slave crank arm 42, respectively. The crank arm reset component 43 continuously applies a reset force rotating in the first direction to the closing slave crank arm 42, so that the working end 10 of the closing slave crank arm 42 always has the tendency to move towards the locking position.

[0038] Reference Figure 6 , Figure 7 and Figure 8 The second locking component 5 includes a tripping buckle plate 51, a limiting member 52, and a buckle plate reset member 53. The middle part of the tripping buckle plate 51 is rotatably connected to the base frame 1 via a rotating shaft. One end of the tripping buckle plate 51 extends upward and approaches the working end 10 of the closing crank arm 42, and is provided with a locking surface 12 adapted to the working end 10. The other end of the tripping buckle plate 51 extends downward.

[0039] The limiting member 52 includes a tripping half-shaft 521 rotatably connected to the base frame 1, and a first extension seat 522 and a second extension seat 523 fixed to the tripping half-shaft 521 and extending downward. The tripping half-shaft 521 is located in the path of the tripping plate rotating in the second direction. The outer periphery of the tripping half-shaft 521 is provided with an arc surface 13 and a tangent plane 14 that continue in the rotation direction. The second direction is opposite to the first direction, and in this embodiment, the first direction is... Figure 7 , Figure 8The first direction is counterclockwise, and the second direction is based on the first direction. Figure 7 , Figure 8 The clockwise direction is the reference point.

[0040] The snap plate reset component 53 is a torsion spring. The snap plate reset component 53 is sleeved on the rotating shaft of the trip snap plate 51, and the two ends of the torsion arm are respectively connected to the trip snap plate 51 and the base frame 1, so as to continuously apply a reset force rotating in the first direction to the trip snap plate 51. The reset force provided by the snap plate reset component 53 is less than the driving force applied to the trip snap plate 51 by the crank arm 42 through the closing when the trip energy storage module is in the closed holding state.

[0041] When the main pull rod 22 moves to the closing position, the main closing crank arm 41 is driven by the transmission frame 2 to rotate in the first direction. The secondary closing crank arm 42 rotates together with the main closing crank arm 41, and the working end 10 of the secondary closing crank arm 42 gradually approaches the locking surface 12 of the tripping buckle plate 51.

[0042] First, the working end 10 of the closing crank arm 42 abuts against the side of the opening latch plate 51 adjacent to the locking surface 12, and resists the elastic force of the latch plate reset member 53 to push the opening latch plate 51 to rotate in the second direction until the bottom end of the opening latch plate 51 abuts against the arc surface 13 of the tripping half shaft 521. The arc surface 13 restricts the opening latch plate 51 from continuing to rotate in the second direction. At this time, under the limiting action of the opening latch plate 51, the closing crank arm 42 cannot continue to rotate in the first direction, but is forced to rotate in the second direction. The movable end 9 moves in the movable groove 11 and stretches the crank arm reset member 43, so that the crank arm reset member 43 stores elastic potential energy.

[0043] Continuing, the main closing crank arm 41 continues to rotate in the first direction, and the secondary closing crank arm 42 continues to rotate in the second direction, causing the working end 10 of the secondary closing crank arm 42 to slide towards the locking surface 12 on the side of the opening latch plate 51 until it crosses the junction point between the side of the opening latch plate 51 and the locking surface 12. After crossing the junction point, the constraint direction of the opening latch plate 51 on the working end 10 changes abruptly, and the elastic potential energy stored in the crank arm reset component 43 is released instantaneously, driving the secondary closing crank arm 42 to rotate rapidly in the first direction, causing the working end 10 of the secondary closing crank arm 42 to abut against the locking surface 12 of the opening latch plate 51, until the movable end 9 of the secondary closing crank arm 42 abuts against the inner wall of the movable groove 11 for limitation, thereby forming a stable mechanical lock between the secondary closing crank arm 42 and the opening latch plate 51. At this point, the transmission frame 2 is locked in the closed position, the closing action is completed, and at this time, the closing arm 42, under the action of the opening reset trend of the opening energy storage module, gives the opening buckle plate 51 the tendency to continue to rotate in the second direction to open the circuit.

[0044] Reference Figure 8Furthermore, the second locking assembly 5 also includes a half-shaft reset member 54, which is a torsion spring. The half-shaft reset member 54 is sleeved on the tripping half-shaft 521. The torsion arms at both ends of the half-shaft reset member 54 are respectively connected to the first extension seat 522 and the base frame 1, giving the limiting member 52 a pre-tightening force to keep the arc surface 13 abutting against the tripping buckle plate 51.

[0045] Reference Figure 9 and Figure 10 The tripping module is used to trigger the unlocking of the latch of the closing holding module. It includes a tripping electromagnetic drive 15 and a tripping mechanical drive 16. In some embodiments, there may be only the tripping electromagnetic drive 15 or only the tripping mechanical drive 16. In this embodiment, both are present.

[0046] Specifically, the tripping electromagnetic drive 15 is a tripping electromagnet, which is mounted on the base frame 1, and its output end is opposite to the first extension seat 522. The tripping mechanical drive 16 is a manual tripping push rod, which is slidably mounted on the panel of the base frame 1 and can be manually pressed to push the second extension seat 523.

[0047] When a tripping command is received, the tripping electromagnet is energized, pushing its output end to move laterally and contact the first extension seat 522. By pushing the first extension seat 522, it drives the tripping half-shaft 521 to rotate, causing the tangent plane 14 on the tripping half-shaft 521 to rotate to a position opposite to the tripping plate 51. At this time, the arc surface 13 of the tripping half-shaft 521 disengages from the tripping plate 51, releasing the rotation limit on the tripping plate 51 in the second direction. Driven by the tripping energy storage module, the closing main crank arm 41 and the closing secondary crank arm 42 tend to rotate in the second direction. Under this tendency, the closing secondary crank arm 42 pushes the tripping latch plate 51 to continue rotating in the second direction until the working end 10 of the closing secondary crank arm 42 disengages from the tripping latch plate 51. The mechanical latch of the closing holding module is fully unlocked. The closing main crank arm 41 and the closing secondary crank arm 42 rotate together in the second direction to reset to the tripping position under the drive of the transmission frame 2. The tripping latch plate 51 rotates and resets under the drive of the latch plate reset component 53.

[0048] Similarly, the manual tripping push rod pushes the second extension seat 523 to drive the tripping half-shaft 521 to rotate, thereby releasing the limit on the tripping plate 51. Furthermore, a limiting shaft 28 can also be provided on the base frame 1 to limit the rotation range of the tripping plate 51. The tripping plate 51 rotates between the two limiting shafts 28 to limit excessive rotation of the tripping plate 51. In this embodiment, both the tripping electromagnetic drive 15 and the tripping mechanical drive 16 drive the tripping half-shaft 521 to rotate clockwise (to... Figure 7 , Figure 8 (Based on the reference), the half-shaft reset component 54 drives the tripped half-shaft 521 to rotate counterclockwise to reset.

[0049] Reference Figure 5 and Figure 11 The output components 3 of the tripping energy storage module and the closing transmission module are linked and include energy storage components 17 and tripping crank arms 18. The number and position of the energy storage components 17 correspond one-to-one with the number and position of the output components 3. Each energy storage component 17 includes a mounting base 171 fixed on the base frame 1 and a tripping elastic element 172 installed in the mounting base 171. The tripping elastic element 172 is a spring, and the spring axis is perpendicular to the length direction of the main pull rod 22.

[0050] The tripping crank arm 18 includes a first mating part 181, a rotating part 182, and a second mating part 183, with the rotating part 182 located between the first mating part 181 and the second mating part 183. The tripping crank arm 18 is rotatably connected to the base frame 1 via the rotating part 182. The first mating part 181 abuts against the top of the rocker arm 31 of the output component 3, and the second mating part 183 engages with the tripping elastic component 172 via a connecting rod 29. The connecting rod 29 includes a connecting rod 291 and a lower pressure seat 292. The two ends of the connecting rod 291 are respectively hinged to the second mating part 183 and the lower pressure seat 292 via spherical bearings. The lower pressure seat 292 abuts against the top of the tripping elastic component 172 and slides within the mounting base 171.

[0051] During the closing action, the output component 3 moves upward with the closing action, and the rocker arm 31 simultaneously lifts the first mating part 181 of the opening crank arm 18, causing the opening crank arm 18 to rotate around the rotating part 182. This, in turn, compresses the opening elastic element 172 downward through the second mating part 183. Simultaneously with the completion of the closing action, the compression and energy storage of the opening elastic element 172 are completed. During the opening action, the opening elastic element 172 releases the stored elastic potential energy to drive the transmission frame 2 and all components linked to the transmission frame 2 to move towards the opening position.

[0052] Reference Figure 12 The buffer module includes an oil buffer body 30 and an oil buffer crank arm 33. The oil buffer body 30 is mounted on the base frame 1, and the extension direction of the extension end of the oil buffer body 30 is parallel to the axial direction of the opening elastic element 172. In this embodiment, the oil buffer crank arm 33 is fixedly sleeved on the rotating shaft of the closing main crank arm 41. When the closing main crank arm 41 rotates, it drives the oil buffer crank arm 33 to rotate together, and the oil buffer crank arm 33 has a portion opposite to the extension end of the oil buffer body 30. In other embodiments, the oil buffer crank arm 33 can also be mounted on the rotating shaft of the transmission crank arm 21 and rotate together with the transmission crank arm 21, and the position of the oil buffer body 30 changes accordingly. Alternatively, the oil buffer crank arm 33 can be mounted on both the rotating shaft of the transmission crank arm 21 and the rotating shaft of the closing main crank arm 41, and the oil buffer body 30 can be mounted at the corresponding position on the base frame 1.

[0053] During the opening action, the transmission frame 2 drives the main closing crank arm 41 to rotate, and the oil buffer crank arm 33 rotates synchronously with the shaft, pushing the telescopic end of the oil buffer body 30 to retract inward. The damping medium inside the oil buffer generates a continuous damping force, absorbing the remaining impact energy at the end of the opening action, making it less likely for rigid impacts to occur between the transmission frame 2, the closing holding module and other moving parts and the base frame 1, reducing the vibration and noise generated by the opening action, reducing the impact wear of parts, and extending the overall mechanical life of the mechanism.

[0054] Reference Figure 1 and Figure 2 Furthermore, in this embodiment, the base frame 1 includes an outer casing 34 with an opening at the bottom, and each module is installed inside the outer casing 34. The main pull rod 22 divides the installation space inside the outer casing 34 into an upper mounting cavity 35 and a lower mounting cavity 36, with the lower mounting cavity 36 located near the bottom opening of the outer casing 34. The output component 3, the transmission crank arm 21, and the first locking assembly 4 are all installed in the upper mounting cavity 35. The arrangement of the three output components 3, the transmission crank arm 21, and the first locking assembly 4 is as follows: output component 31, transmission crank arm 21, output component 32, first locking assembly 4, and output component 33 are arranged sequentially. The end of the connector 32 furthest from the main pull rod 22 extends out of the outer casing 34. The closing drive module, the second locking component, and the opening trip module are all located in the lower mounting cavity 36. The closing drive module is opposite to the transmission crank arm 21, and the second locking component 5 and the opening trip module are opposite to the first locking component 4. The distributed arrangement of each module improves heat dissipation and maintenance.

[0055] The implementation principle of the operating mechanism for a recloser in this application embodiment is as follows: When closing, the closing electromagnetic drive 8 is instantaneously energized. The output end of the closing electromagnetic drive 8 pushes the transmission crank arm 21 upward, which drives the main pull rod 22 to move horizontally via the first connecting plate 23, and pushes the output component 3 upward via the second connecting plate 24, thereby driving the moving contact of the recloser to close. While the main pull rod 22 moves towards the closing position, it drives the closing main crank arm 41 to rotate via the third connecting plate 27. The closing starting point 10 of the crank arm 42 is first blocked by the opening latch plate 51 and stretched to store energy from the crank arm reset component 43. After passing the critical point, it quickly pops out and abuts the locking surface 12. At the same time, the opening latch plate 51 is limited by the arc surface 13 of the release half shaft 521, forming a mechanical lock to maintain the closing state. During the closing process, the output component 3 moves upward to lift the opening crank arm 18, and simultaneously compresses the opening elastic component 172 to complete the energy storage.

[0056] When the circuit breaker is tripped, the tripping electromagnetic drive 15 or the manual tripping push rod drives the tripping half shaft 521 to rotate, so that its tangential plane 14 is opposite to the tripping buckle plate 51, releasing the limit. The tripping elastic element 172 releases energy, and the tripping buckle plate 51 rotates and disengages from the closing buckle arm 42 under the push of the closing crank arm 42. At the same time, the output element 3 moves downward to complete the tripping. The impact energy is absorbed by the buffer module at the end of the tripping.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An operating mechanism for a recloser, characterized in that, include: Base frame; The closing transmission module includes a transmission frame and an output component; the transmission frame is movable on the base frame and moves between its corresponding closing position and opening position; the output component is simultaneously linked with the transmission frame and the recloser moving contact, so that when the transmission frame is in the closing position, the recloser closes, and when the transmission frame is in the opening position, the recloser opens. The closing drive module, which is in drive cooperation with the transmission frame, is used to drive the transmission frame to move to the closing position in response to the closing command; The closing holding module includes a first locking component and a second locking component; the first locking component is linked to the transmission frame and operates under the drive of the transmission frame, and the second locking component is connected to the base frame; the first locking component and the second locking component form a mechanical lock after the recloser is closed, so as to keep the transmission frame in the closed position; The tripping module is used to trigger the first locking component and the second locking component to unlock in response to a tripping command; as well as The tripping energy storage module is linked with the closing transmission module. During the closing action, it synchronously stores elastic potential energy and releases the stored elastic potential energy when the first locking component and the second locking component are triggered to unlock, so as to drive the transmission frame to move to the tripping position.

2. The operating mechanism for a recloser according to claim 1, characterized in that: The transmission frame includes a transmission crank arm, a main tie rod, a first connecting plate, and a second connecting plate; The transmission crank arm is rotatably connected to the base frame. The transmission crank arm has a transmission abutment part and a transmission hinge part. The transmission abutment part is opposite to the output end of the closing drive module, and the transmission hinge part is hinged to one end of the first connecting plate. The main tie rod moves along a straight line on the base frame, and the end of the first connecting plate away from the transmission hinge is hinged to the main tie rod; the opposite ends of the second connecting plate are respectively hinged to the output component and the main tie rod.

3. The operating mechanism for a recloser according to claim 1, characterized in that: The closing drive module includes a closing electromagnetic drive component, which is mounted on the base frame. When it receives a closing command, it generates electromagnetic force to drive its output end to move the transmission frame.

4. The operating mechanism for a recloser according to claim 1, characterized in that: The first locking component includes The main crank arm for closing the circuit breaker is rotatably connected to the base frame and driven to rotate by the transmission frame; The closing crank arm is rotatably connected to the main closing crank arm in the middle, and one end is the working end; as well as The crank arm reset component is connected between the main closing crank arm and the secondary closing crank arm, and is used to give the secondary closing crank arm a tendency to lock with the second locking component through the working end.

5. The operating mechanism for a recloser according to claim 4, characterized in that: The crank arm reset component gives the closing crank arm a tendency to rotate in a first direction, and the closing main crank arm is provided with a limiting structure that limits the relative rotation range of the closing crank arm. The second locking component includes... The tripping latch plate is rotatably connected to the base frame in the middle, and has a locking surface at one end; and A limiting component is provided on the base frame and located in the path of the opening latch plate rotating in the second direction; Wherein, the second direction is opposite to the first direction. When the transmission frame moves toward the closed position, it drives the main closing crank arm to rotate along the first direction, so that the closing position moves from the working end of the crank arm to abut against the locking surface. During the process, the working end pushes the opening latch plate to rotate along the second direction to abut against the limiting member. The limiting member restricts the opening latch plate from continuing to rotate along the second direction to unlock, so as to maintain the closed position of the transmission frame.

6. The operating mechanism for a recloser according to claim 5, characterized in that: The second locking component further includes a latch plate reset member, which is connected between the base frame and the trip latch plate to give the trip latch plate a tendency to rotate and reset along the first direction.

7. The operating mechanism for a recloser according to claim 5, characterized in that: The limiting member is rotatably connected to the base frame and has an arc surface and a tangent plane that are continuous along the rotation direction; when the transmission frame holds the closed position, the opening latch plate abuts against the arc surface; when the limiting member rotates under the drive of the opening trip module until the tangent plane is opposite to the opening latch plate, the opening latch plate can continue to rotate along the second direction so that the opening latch plate separates from the closed position from the crank arm; The second locking component further includes a half-shaft reset member, which is connected between the base frame and the limiting member, and gives the limiting member a tendency to rotate and reset to abut against the opening buckle plate with the arc surface.

8. The operating mechanism for a recloser according to claim 1, characterized in that: The tripping module includes The tripping electromagnetic drive is installed on the base frame. When it receives a tripping command, it generates electromagnetic force to drive its own output terminal to move, thereby triggering the first locking component and the second locking component to unlock. and / or A tripping mechanical drive unit, movable on the base frame, is moved by a pushing force to trigger the first locking component and the second locking component to unlock.

9. The operating mechanism for a recloser according to claim 1, characterized in that: The tripping energy storage module includes An energy storage component includes a mounting base and a tripping elastic element; the mounting base is mounted on the base frame, and the tripping elastic element is located in the mounting base; as well as The tripping crank arm includes a first mating part, a rotating part, and a second mating part; the rotating part is located between the first mating part and the second mating part, and the tripping crank arm is rotatably connected to the base frame through the rotating part; the first mating part mates with the output component, and the second mating part mates with the tripping elastic component; During the closing operation, the first cooperating part is pushed by the output component to drive the opening crank arm to rotate, while the second cooperating part compresses the opening elastic element to store elastic potential energy.

10. The operating mechanism for a recloser according to claim 1, characterized in that: The operating mechanism for the recloser also includes a buffer module, which is disposed on the opening action path of the transmission frame and / or the first locking component, and is used to absorb impact energy during opening.

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