A permanent magnet spring integrated column switch operating mechanism

Abstract

The application discloses a permanent magnet and spring integrated column switch operating mechanism, which comprises a base, an output mechanism, a permanent magnet operating mechanism, an energy storage component, a manual closing mechanism and a manual opening mechanism; the output mechanism comprises three-phase pull rods and an opening spring; the three-phase pull rods are arranged in a pull rod sliding cavity along an X-axis direction, one end of the opening spring along the X-axis is fixed to a side wall of the base, and the other end is fixed to the three-phase pull rods through a connecting piece to drive the three-phase pull rods to move along the X-axis and provide an opening driving force; the permanent magnet operating mechanism drives the three-phase pull rods to realize electric closing and opening; the energy storage component comprises an energy storage spring, and the energy storage spring can provide a closing driving force for the three-phase pull rods when being in an elongated state; the manual closing mechanism is used for locking or releasing the energy storage spring; and the manual opening mechanism is used for releasing or locking the opening spring. The application has compact structure and is easy to assemble, and has high operating precision, so that the closing can be kept after closing, and the rebound after closing can be avoided.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switch technology, and more specifically to a permanent magnet spring-operated integrated pole-mounted switch operating mechanism. Background Technology

[0002] The permanent magnet mechanism is an advanced operating method for 10-35kV voltage level switchgear. Its advantages, such as simple and reliable structure, fast response speed, and high matching of closing characteristics with vacuum interrupting contacts, have been recognized by power grid systems both domestically and internationally. However, because it operates by generating excitation through coil energization, it cannot function when the switchgear is without power (such as during initial commissioning after installation or power failure). Therefore, in practical applications, manual closing and manual opening elements are generally added. The manual closing element is an independently installed manual spring-operated mechanism. It utilizes manually stored energy to stretch the closing spring and release the energy, rapidly driving the three-phase vacuum interrupter and the moving iron core of the permanent magnet mechanism to the closing position. Then, the closing state is maintained by the closing force of the permanent magnet mechanism.

[0003] In existing technologies, the installation positions of the permanent magnet mechanism and the manual operation mechanism are affected by the machining accuracy of the switch housing (i.e., the supporting structure) and the component interface margin, resulting in low distance accuracy (fluctuation range can reach 1mm). To ensure successful closing, the spring operation mechanism needs to suppress the rebound amplitude after the collision between the conductive contacts and the moving and stationary iron cores of the permanent magnet mechanism to zero. Therefore, the positional accuracy of the permanent magnet mechanism and the manual operation mechanism needs to be controlled within the range of 0.1-0.3mm to prevent the transmission system from jamming or jumping out due to rebound. Therefore, most systems employ adjustable distance structures, which places high demands on the skill level of assembly personnel and makes the results unpredictable.

[0004] The control mechanism for successful closing of a manual closing mechanism is that each time an energy storage action is performed, the closing holding half-shaft rotates synchronously with the energy storage handle, returning from the unlocked state to the locked state. The energy storage handle resets, and the half-shaft returns to the unlocked state, repeating this cycle. When the energy storage handle repeatedly swings, stretching the closing spring past its rotation dead point to release the drive closing system, the half-shaft is just in the locked state. This ensures that the switch is safely held in the closed position to prevent bounce. However, in traditional structures, the energy storage drive and half-shaft linkage are random and irregular. There is a possibility that the closing spring has already passed the energy storage dead point and released energy before the closing holding half-shaft has reset, causing the switch to fail to lock after closing and bounce, resulting in the switch opening.

[0005] Traditional switch structures with separate permanent magnet mechanisms and manual operation mechanisms suffer from problems such as poor versatility, low standardization, and difficulty in assembly and adjustment. In addition, the chassis components require welding of various mounting parts needed for control elements, such as opening springs, open / close auxiliary switches, secondary cable terminals, and anti-open circuit modules. This requires the use of a large number of tooling fixtures for welding operations, resulting in poor control over the complexity of chassis component production, energy consumption, environmental protection, and costs.

[0006] Therefore, how to provide a permanent magnet integrated actuation mechanism that is compact, high-performance, and easy to install is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] In view of this, the present invention provides an integrated permanent magnet spring-loaded switch operating mechanism, which solves the problems of poor versatility, the need for a large number of tooling fixtures for welding and assembly, and complex production of existing high-voltage switch permanent magnet operating and manual operating mechanisms that are installed separately.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A permanent magnet spring-loaded integrated column-mounted switch operating mechanism includes: The base can be fixed to the circuit breaker of the high-voltage switch; The output mechanism includes a three-phase pull rod and a tripping spring; the base has a pull rod sliding cavity with both ends through it along the X-axis direction, the three-phase pull rod is arranged in the pull rod sliding cavity along the X-axis direction, one end of the tripping spring along the X-axis is fixed to the side wall of the base, and the other end is fixed to the three-phase pull rod through a connector to drive the three-phase pull rod to move along the X-axis and provide tripping driving force; A permanent magnet operating mechanism is fixed on the base and connected to the three-phase pull rod to realize electric opening and closing of the circuit breaker; An energy storage component includes an energy storage spring, which is disposed on the outer wall of the base parallel to the X-axis direction. When the energy storage spring is in a stretched state, it can provide a closing driving force to the three-phase pull rod. A manual closing mechanism, mounted on the base, is used to lock or release the energy storage spring; A manual tripping mechanism, mounted on the base, is used to release or lock the tripping spring.

[0010] The beneficial effects of the technical solution of this invention are that it integrates the permanent magnet operating mechanism, the manual closing mechanism and the manual opening mechanism on a single base, reducing a large amount of welding and assembly work. Compared with the traditional switch structure in which the permanent magnet mechanism and the manual opening mechanism are installed separately, it has stronger versatility, higher standardization and is easier to assemble on the circuit breaker.

[0011] Preferably, the base includes a base plate and a first side plate and a second side plate spaced apart and vertically fixed to the top surface of the base plate, with the opposing surfaces of the first and second side plates defining the sliding cavity for the pull rod. After the operating mechanism is assembled, the base plate can be directly bolted to the circuit breaker to achieve the installation of the entire mechanism, reducing the complexity of assembly.

[0012] Preferably, the energy storage assembly further includes an energy storage shaft and an energy storage crank arm; the energy storage shaft rotates vertically through the panels of the first side plate and the second side plate; the energy storage crank arm is fixed to one end of the energy storage shaft corresponding to the second side plate; the first end of the energy storage spring is hinged to the panel of the second side plate, and the second end is hooked onto the energy storage crank arm. The circular motion of the energy storage shaft causes the energy storage crank arm to stretch the energy storage spring. When the energy storage spring is stretched to its highest point, the operating mechanism is in an energy storage state. As the energy storage shaft continues to rotate, the energy storage spring releases energy and drives the circuit breaker to close.

[0013] Preferably, the output mechanism further includes an output crank arm, the upper end of which is hinged to the three-phase tie rod via a pin. The manual closing mechanism includes a drive arm, a cam, a drive unit, a closing half-shaft, a reset spring, and a closing latch. The drive arm and the cam are both fixed to the energy storage shaft, with the cam positioned in the sliding cavity of the pull rod and able to contact the output crank arm as the energy storage shaft rotates. The drive arm is located outside the first side plate. The drive unit is sleeved on the energy storage shaft and can be manually operated to reciprocate. During reciprocating rotation, it can release or lock the drive arm via a transmission component to achieve rotation and locking of the energy storage shaft. The closing half-shaft is rotatably connected to the panel of the first side plate and arranged parallel to the energy storage shaft. One end of the reset spring is fixed to the first side plate, and the other end is connected to the closing half-shaft to achieve interlocking reset of the closing half-shaft. The rotation of the drive unit can drive the closing half-shaft to unlock it. The closing latch is hinged to the sliding cavity of the pull rod and can abut against the output crank arm.

[0014] The beneficial effects of the above technical solution are as follows: When the drive unit is manually operated to reciprocate, the energy storage shaft performs circular motion. When the drive unit rotates to the point where its transmission component contacts the drive arm, it will touch the drive arm, thereby driving the energy storage shaft to rotate. The connecting shaft on the energy storage crank arm rotates to the half-turn position of the energy storage spring's extension until it reaches its highest point. At this time, the energy storage spring is in the energy storage state, and the cam is not in contact with the output crank arm. In the closed state, the connecting shaft on the energy storage crank arm rotates to the half-turn position of the energy storage spring's release, the cam contacts the output crank arm, and pushes the three-phase pull rod to slide for closing. In the un-energy-storing state, the energy storage spring releases... When the cam is lowered to its lowest point, it completely disengages from the output crank arm. Simultaneously, the closing lever contacts the output crank arm and locks itself to the closing half-shaft. After the permanent magnet operating mechanism is safely engaged and stabilized in the closed position, the drive unit drives the closing half-shaft to release the locking of the closing position. This invention achieves the rotation and locking of the energy storage shaft through the reciprocating motion of the drive unit. During the reciprocating rotation of the drive unit, the closing half-shaft is unlocked. When the energy storage spring is stretched to its highest point, it releases energy to drive the closing. At the same time, the closing half-shaft resets and locks the closing state. The reciprocating rotation of the drive unit ensures the operating accuracy.

[0015] Preferably, the drive unit includes a driven ratchet, a driving ratchet, a pawl, and a drive pin; both the driven ratchet and the driving ratchet are rotatably mounted on the energy storage shaft and correspond to the outer side of the first side plate; the first end of the pawl is fixed to the end face of the driven ratchet, and the second end extends into the tooth groove of the driving ratchet, with a gap between the second end face of the pawl and the tooth contact surface of the driving ratchet to form a transmission idle stroke; the drive pin is fixed to the end face of the driven ratchet and can contact the drive arm as the driven ratchet rotates to realize the rotation of the energy storage shaft. Manually rotating the driving ratchet counterclockwise and clockwise causes a transmission idle stroke between the driving ratchet and the pawl. Therefore, when the driving ratchet begins to rotate, its teeth do not contact the pawl, and the driven ratchet does not rotate. At this time, the energy storage spring is not stretched, and the transmission to the closing half-shaft is released, putting the closing half-shaft in a self-locking state.

[0016] Preferably, the drive unit further includes a ratchet pawl, one end of which is hinged to the side wall of the output crank arm, and the other end can be inserted into the tooth groove of the driven ratchet, allowing the driven ratchet to rotate only in one direction.

[0017] Preferably, the manual closing mechanism further includes a connecting stop, a trip plate, and an interlocking plate; the number of output crank arms is two, and a first roller and a second roller are respectively hinged between the lower ends of the two output crank arms. The closing half-shaft is provided with a clearance groove, and the lower end of the closing actuator can pass through the clearance groove. The cam can contact the first roller; one end of the connecting stop is hinged to the closing lever, and the other end can contact the second roller; The trip plate is fixed to the end of the closing half shaft, and the interlocking plate is fixed to the end face of the driving ratchet and can abut against the trip plate.

[0018] The beneficial effects of the above technical solution are that the operating mechanism has an energy storage state, a closed state, and a non-energy storage state; in the energy storage state, the connecting shaft on the energy storage crank arm rotates to the half-turn position of the energy storage spring until the energy storage spring is stretched to the highest point, at which time the outer convex surface of the cam does not contact the first roller; in the closed state, the connecting shaft on the energy storage crank arm rotates to the half-turn position of the energy storage spring release, the outer convex surface of the cam contacts the first roller, and pushes the three-phase pull rod to slide to close the circuit; in the non-energy storage state, the energy storage spring is released to the lowest point, the cam is completely disengaged from the first roller, the second roller contacts the connecting stop, and the closing stop connected to the connecting stop first contacts and locks with the closing half shaft. After the permanent magnet mechanism is safely engaged and stabilized in the closed position, the interlocking plate contacts the tripping plate, releasing the closing half shaft and the closing stop from locking the three-phase pull rod in the closed position.

[0019] Preferably, the device also includes a torsion spring, one end of which is fixed to the closing latch, and the other end is connected to the connecting stop. The torsion spring is used to reset the closing latch.

[0020] Preferably, the permanent magnet operating mechanism includes a static magnetic yoke, a push rod, and a permanent magnet crank arm; the static magnetic yoke is fixed on the base, one end of the push rod is connected to the output end of the static magnetic yoke, one end of the permanent magnet crank arm is fixed to the other end of the push rod, and the other end of the permanent magnet crank arm is fixed on the three-phase pull rod.

[0021] Preferably, the manual tripping mechanism includes a manual tripping shaft and a manual tripping cam; the manual tripping shaft is rotatably connected to the first side plate of the base, and the manual tripping cam is fixed on the manual tripping shaft, with its arc-shaped convex surface corresponding to the top rod.

[0022] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a permanent magnet spring-operated integrated pole-mounted switch operating mechanism, which has a compact structure, is easy to assemble, and has high operating accuracy, ensuring that it can remain locked after closing and will not rebound after closing. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 Schematic diagram of the operating mechanism provided by the present invention Figure 1 ; Figure 2 Schematic diagram of the operating mechanism provided by the present invention Figure 2 ; Figure 3 Schematic diagram of the operating mechanism provided by the present invention after removing the base. Figure 1 ; Figure 4 Schematic diagram of the operating mechanism provided by the present invention after removing the base. Figure 2 ; Figure 5 This is a schematic diagram of the base structure provided by the present invention; Figure 6 Schematic diagram of the manual closing mechanism provided by the present invention Figure 1 ; Figure 7 Schematic diagram of the manual closing mechanism provided by the present invention Figure 2 ; Figure 8 A schematic diagram of the drive unit structure provided by the present invention; Figure 9 This is a schematic diagram of the closing half-shaft assembly provided by the present invention; Figure 10 This is an assembly diagram of the permanent magnet operating mechanism and the manual tripping mechanism provided by the present invention.

[0025] Wherein, 1-base; 11-bottom plate; 12-first side plate; 13-second side plate; 14-avoidance groove; 15-horizontal guide groove; 16-vertical guide groove; 2-Output assembly; 21-Three-phase pull rod; 22-Break spring; 23-Output crank arm; 24-Three-phase connecting plate; 25-First roller; 26-Second roller; 3-Energy storage component; 31-Energy storage shaft; 32-Energy storage crank arm; 33-Energy storage spring; 4-Manual closing mechanism; 41-Drive unit; 411-Driving ratchet; 412-Driven ratchet; 413-Pawl; 414-Drive pin; 415-Anti-reverse pawl; 42-Drive arm; 43-Cam; 44-Closing lever; 45-Closing half-shaft; 451-Relief groove; 46-Trigger plate; 47-Interlocking plate; 48-Connecting stop; 5-Manual tripping mechanism; 51-Manual tripping shaft; 52-Manual tripping cam; 6-Permanent magnet operating mechanism; 61-Static magnetic yoke; 62-Push rod; 63-Permanent magnet crank arm; 7-Terminal blocks; 8-Auxiliary switch; 81-Auxiliary crank arm. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention discloses an integrated permanent magnet and manual spring-loaded switch operating mechanism, which integrates permanent magnet and manual spring-loaded operation on a single base, resulting in a compact structure that ensures operating accuracy and closing quality.

[0028] See appendix Figure 1 To be continued Figure 10 According to an embodiment of the present invention, a permanent magnet spring-operated integrated pole-mounted switch operating mechanism includes a base 1, an output mechanism 2, a permanent magnet operating mechanism 6, an energy storage component 3, a manual closing mechanism 4, and a manual opening mechanism 5. The base 1 can be fixed on the circuit breaker of a high-voltage switch. The output mechanism 2 includes a three-phase pull rod 21 and an opening spring 22. The base 1 has a pull rod sliding cavity with both ends extending along the X-axis. The three-phase pull rod 21 is arranged in the pull rod sliding cavity along the X-axis. One end of the opening spring 22 along the X-axis is fixed to the side wall of the base 1, and the other end is connected to the three-phase switch via a connector. The position lever 21 is fixed to drive the three-phase lever 21 to move along the X-axis and provide the opening driving force; the permanent magnet operating mechanism 6 is fixed on the base 1 and is connected to the three-phase lever 21 to realize electric opening and closing; the energy storage assembly 3 includes an energy storage spring 33, which is arranged parallel to the X-axis direction on the outer wall of the base 1. When the energy storage spring 33 is in the stretched state, it can provide the three-phase lever 21 with the closing driving force; the manual closing mechanism 4 is assembled on the base 1 to lock or release the energy storage spring 33; the manual opening mechanism 5 is assembled on the base 1 to release or lock the opening spring 22.

[0029] To further optimize the above technical solution, the base 1 includes a base plate 11 and a first side plate 12 and a second side plate 13 that are spaced apart and vertically fixed to the top surface of the base plate 11. The two opposite surfaces of the first side plate 12 and the second side plate 13 define a sliding cavity for the tie rod.

[0030] like Figure 5 As shown, the upper surfaces of the first side plate 12 and the second side plate 13 are provided with corresponding clearance grooves 14. There are two opening springs 22, one end of which is fixed on the panel of the first side plate 12 and the second side plate 13 respectively, and the other end is connected to the three-phase tie rod 21 through a connecting pin. The connecting pin is placed in the clearance groove 14, and the outer wall of the connecting pin slides against the bottom wall of the clearance groove 14.

[0031] To further optimize the above technical solution, the energy storage component 3 also includes an energy storage shaft 31 and an energy storage crank arm 32; the energy storage shaft 31 rotates vertically through the panels of the first side plate 12 and the second side plate 13; the energy storage crank arm 32 is fixed to one end of the energy storage shaft 31 corresponding to the second side plate 13; the first end of the energy storage spring 33 is hinged to the panel of the second side plate 13, and the second end is hooked on the energy storage crank arm 32.

[0032] The rotation of the energy storage shaft 31 enables the energy storage crank arm 32 to stretch the energy storage spring 33, providing a closing driving force to the three-phase pull rod 21. For example... Figure 4 and Figure 7 As shown, a connecting shaft is fixed on the upper part of the energy storage crank arm 32, and the second end of the energy storage spring 33 is hooked on the connecting shaft. The rotation of the energy storage shaft 31 can drive the connecting shaft to make circular motion. The hinge between the first end of the energy storage spring 33 and the second side plate 13 allows its second end to be stretched in a circular motion with the rotation of the energy storage crank arm 32. Therefore, the energy storage spring 33 has a maximum stretching point. When the energy storage spring 33 is stretched to pass the maximum stretching point, it will release energy, thereby forcing the energy storage shaft 31 to provide closing drive to the three-phase pull rod 21.

[0033] In this embodiment, the output mechanism 2 further includes an output crank arm 23, the upper end of which is hinged to the three-phase pull rod 21 via a pin; the manual closing mechanism 4 includes a drive arm 42, a cam 43, a drive unit 41, a closing half-shaft 45, a reset spring, and a closing latch 44; the drive arm 42 and the cam 43 are both fixed on the energy storage shaft 31, and the cam 43 is placed in the sliding cavity of the pull rod and can contact the output crank arm 23 as the energy storage shaft 31 rotates; the drive arm 42 is located outside the first side plate 12; the drive unit 41 is sleeved on the energy storage shaft 31 and It can be manually operated to reciprocate. During the reciprocating rotation, the drive arm 42 can be released or locked through the transmission component to realize the rotation and locking of the energy storage shaft 31. The closing half shaft 45 is rotatably connected to the panel of the first side plate 12 and arranged parallel to the energy storage shaft 31. One end of the reset spring is fixed on the first side plate 12, and the other end is connected to the closing half shaft 45 to realize the interlocking reset of the closing half shaft 45. The rotation of the drive unit 41 can drive the closing half shaft 45 to unlock it. The closing lever 44 is hinged in the sliding cavity of the pull rod and can abut against the output crank arm 23.

[0034] To further optimize the above technical solution, the drive unit 41 includes a driven ratchet 412, a driving ratchet 411, a pawl 413, and a drive pin 414. The driven ratchet 412 and the driving ratchet 411 are both rotatably mounted on the energy storage shaft 31 and correspond to the outer side of the first side plate 12. The first end of the pawl 413 is fixed to the end face of the driven ratchet 412, and the second end extends into the tooth groove of the driving ratchet 411. There is a gap between the end face of the second end of the pawl 413 and the tooth contact surface of the driving ratchet 411 to form a transmission idle stroke. The drive pin 414 is fixed to the end face of the driven ratchet 412 and can contact the drive arm 42 as the driven ratchet 412 rotates to realize the rotation of the energy storage shaft 31.

[0035] like Figures 6 to 8 As shown, when the driving ratchet is manually rotated, there is a transmission gap between the contact surface of the driving ratchet teeth and the second end face of the pawl. Initially, the driving ratchet does not contact the pawl, the driven ratchet does not rotate, and the energy storage spring is locked. Once the driving ratchet teeth contact the pawl, the driven ratchet begins to rotate. When the driven ratchet drives the drive pin to the position where it contacts the drive arm, the rotation of the driven ratchet drives the drive arm, cam, and energy storage shaft to rotate simultaneously. The energy storage crank arm stretches the spring to store energy.

[0036] To further optimize the above technical solution, the drive unit 41 also includes a ratchet 415. One end of the ratchet 415 is hinged to the side wall of the output crank arm 23, and the other end can be inserted into the tooth groove of the driven ratchet 412, allowing only unidirectional rotation of the driven ratchet 412. The driving ratchet 411 reciprocates, and during the reciprocating rotation, the ratchet 415 restricts the driven ratchet 412 to rotate in one direction.

[0037] In this embodiment, the manual closing mechanism 4 further includes a connecting stop 48, a trip plate 46, and an interlocking plate 47; there are two output crank arms 23, and a first roller 25 and a second roller 26 are respectively hinged between the lower ends of the two output crank arms 23; a clearance groove 451 is provided on the closing half shaft 45, and the lower end of the closing lever 44 can pass through the clearance groove 451; the cam 43 can contact the first roller 25; one end of the connecting stop 48 is hinged to the closing lever 44, and the other end can contact the second roller 26; the trip plate 46 is fixed to the end of the closing half shaft 45, and the interlocking plate 47 is fixed to the end face of the driving ratchet 411 and can abut against the trip plate 46.

[0038] The closing half-shaft can achieve interlock reset under the action of the reset spring. The interlock plate and the trip plate are transmission components on the drive unit. When the active ratchet rotates and drives the interlock plate to contact the trip plate, it will put pressure on the trip plate. Under the action of pressure, the closing half-shaft is forced to rotate to unlock. When the active ratchet drives the interlock plate to not contact the trip plate, the closing half-shaft achieves interlock reset under the action of the reset spring.

[0039] The closing half shaft is provided with a clearance groove. When the closing shaft rotates to the position of the closing handle corresponding to the clearance groove, the lower end of the closing handle can rotate counterclockwise through the clearance groove. When the shaft of the closing half shaft corresponds to the closing handle, the closing half shaft blocks the rotation of the closing handle, causing the connecting stop to contact the second roller.

[0040] To further optimize the above technical solution, a torsion spring 49 is also included. One end of the torsion spring 49 is fixed to the closing latch 44, and the other end is connected to the connecting stop 48. The torsion spring 49 is used to realize the automatic reset of the closing latch 44.

[0041] The operating mechanism in this embodiment has an energy storage state, a closing state, and an energy release state.

[0042] In the energy storage state, the connecting shaft on the energy storage crank arm rotates to the half-turn position of the energy storage spring until it reaches the highest point. At this time, the outer convex surface of the cam does not contact the first roller. In the closing state, the connecting shaft on the energy storage crank arm rotates to the half-turn position of the energy storage spring release. The cam contacts the first roller and pushes the three-phase pull rod to slide for closing operation. In the release state, the energy storage spring is released to the lowest point. The cam completely disengages from the first roller. The second roller on the output crank arm contacts the connecting stop. The closing stop connected to the connecting stop first contacts and locks with the closing half shaft. After the permanent magnet mechanism is safely engaged and stabilized in the closing position, the interlocking plate contacts the tripping plate, releasing the closing position lock of the closing half shaft and closing stop on the three-phase pull rod.

[0043] To further optimize the above technical solution, the permanent magnet operating mechanism 6 includes a static magnetic yoke 61, a push rod 62, and a permanent magnet crank arm 63; the static magnetic yoke 61 is fixed on the base 1, one end of the push rod 62 is connected to the output end of the static magnetic yoke 61, one end of the permanent magnet crank arm 63 is fixed to the other end of the push rod 62, and the other end of the permanent magnet crank arm 63 is fixed on the three-phase pull rod 21.

[0044] The static magnetic yoke contains a static iron core, a moving iron core, a closing / opening coil, and a permanent magnet. The static and moving iron cores are located side by side at the center of the static magnetic yoke. The closing / opening coils are sleeved on the outer periphery of the static and moving iron cores, and the permanent magnets are sleeved on the outer periphery of the closing / opening coils. The push rod is located between the static and moving iron cores. When the closing / opening coils are energized, they can drive the push rod to move linearly. The push rod drives the permanent magnet crank arm to move synchronously. The permanent magnet crank arm drives the three-phase pull rod to move linearly within the operating cavity to perform the closing / opening operation.

[0045] In this embodiment, the manual tripping mechanism 5 includes a manual tripping shaft 51 and a manual tripping cam 52; the manual tripping shaft 51 is rotatably connected to the first side plate 12 of the base 1, and the manual tripping cam 52 is fixed on the manual tripping shaft 51, with its arc-shaped convex surface corresponding to the push rod 62.

[0046] When a circuit breaker needs to be manually closed while in the open position, press... Figure 1 In the indicated direction, the manual rotation of the active ratchet is counterclockwise. The active ratchet pushes the pawl fixed on the driven ratchet, causing the driven ratchet to also rotate counterclockwise. The driven ratchet then pushes the drive arm fixed on the energy storage shaft through the drive pin fixed on the side of the ratchet. This drives the energy storage shaft to rotate the cam and the energy storage crank arm counterclockwise together, and the energy storage crank arm stretches the energy storage spring to perform an energy storage action.

[0047] The driving and driven ratchet have the same number of teeth. A pawl that meshes with the driven ratchet positions the driven ratchet in the reverse direction. Because there is a transmission gap between the pawl and the teeth of the driving ratchet, the ratchet teeth of the driving and driven ratchet maintain a half-tooth gap angle difference at the beginning of the energy storage action. Figure 6 As shown, this idle angle ensures that the driven ratchet does not contact the energy storage shaft during the initial stage of the energy storage action, preventing the energy storage shaft from rotating and the energy storage crank arm from stretching the energy storage spring. Driven action only occurs after the idle angle rotation is complete. During this idle period, the interlocking plate fixed on the driving ratchet completely disengages from the trip plate on the closing half-shaft, ensuring that the closing half-shaft is fully reset under the action of the return spring to achieve the locking state.

[0048] By repeatedly swinging and rotating the active ratchet, the manual closing mechanism cycles through the following sequence: active ratchet rotates counterclockwise – resetting the closing half-shaft lock – active ratchet continues to rotate counterclockwise – driving the energy storage shaft to rotate – energy storage arm stretches the energy storage spring to store energy – active ratchet resets clockwise – driven ratchet retains its anti-reverse position – active ratchet continues to reset clockwise – releasing the closing half-shaft lock. This cycle continues until the energy storage spring is stretched past its highest point by the energy storage arm, at which point the energy storage spring releases energy and initiates the closing drive, while the closing half-shaft remains locked in the closing position. Only after the active ratchet resets is the locking of the closing half-shaft released, awaiting manual opening or electric opening by the permanent magnet operating mechanism.

[0049] When the circuit breaker needs to be manually opened while it is in the closed state, the manual opening shaft is rotated clockwise by hand. The manual opening shaft drives the manual opening cam to rotate. The smooth arc surface of the manual opening cam pushes open the push rod, causing the moving and stationary iron cores to separate. The air gap caused the holding force to drop sharply, so the three-phase pull rod performs the opening action under the tension of the opening spring and is held in the open position by the remaining spring force.

[0050] When the circuit breaker is powered and can perform electric closing and opening operations, the closing half shaft is in the unlocked state after being reset, and the manual opening cam is also reset to a position away from the push rod. Then, when the closing and opening coils are energized, the positive and negative polarity of the power input is changed to generate an excitation magnetic field that attracts or repels the circuit breaker. This magnetic force drives the moving iron core, push rod, three-phase pull rod and other transmission systems to achieve electric closing or electric opening.

[0051] To further optimize the above technical solution and ensure the stability of the linear movement of the three-phase tie rod 21, the output mechanism 2 also includes a three-phase connecting plate 24. The first side plate 12 and the second side plate 13 each have horizontally arranged guide grooves 15 and vertically arranged guide grooves 16. There are two three-phase connecting plates 24, with their upper ends clamped to both sides of the three-phase tie rod 21 and their lower ends arranged corresponding to the vertical guide grooves 16. A first connecting pin passes through the horizontal guide groove 16, the two three-phase connecting plates 24, and the three-phase tie rod 21 to secure the three-phase connecting plate 24 to the three-phase tie rod 21, and the first connecting pin can move horizontally along the horizontal guide groove 16. A second connecting pin passes through the vertical guide groove 16 and the lower end of the three-phase connecting plate 24, and the second connecting pin can move vertically along the vertical guide groove 16.

[0052] To further optimize the above technical solution, a wiring terminal 7 is also fixed on the base 1.

[0053] To further optimize the above technical solution, an auxiliary switch 8 is also fixed on the base 1, and an auxiliary crank arm 81 is fixed on the three-phase pull rod 21. The auxiliary crank arm 81 drives the auxiliary switch 8 to operate the opening and closing of the auxiliary switch 8.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A permanent magnet spring-loaded integrated column-mounted switch operating mechanism, characterized in that, The base (1) can be fixed on the circuit breaker of the high-voltage switch; The output mechanism (2) includes a three-phase pull rod (21) and a tripping spring (22); the base (1) has a pull rod sliding cavity with both ends through along the X-axis direction, the three-phase pull rod (21) is arranged in the pull rod sliding cavity along the X-axis direction, one end of the tripping spring (22) along the X-axis is fixed to the side wall of the base (1), and the other end is fixed to the three-phase pull rod (21) through a connector to drive the three-phase pull rod (21) to move along the X-axis and provide tripping driving force; The permanent magnet operating mechanism (6) is fixed on the base (1) and connected to the three-phase pull rod (21) to realize electric opening and closing of the circuit breaker; The energy storage component (3) includes an energy storage spring (33), which is disposed on the outer wall of the base (1) in parallel to the X-axis direction. When the energy storage spring (33) is in the stretched state, it can provide the closing driving force to the three-phase pull rod (21). The manual closing mechanism (4) is mounted on the base (1) for locking or releasing the energy storage spring (33). A manual tripping mechanism (5) is mounted on the base (1) for releasing or locking the tripping spring (22).

2. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 1, characterized in that, The base (1) includes a base plate (11) and a first side plate (12) and a second side plate (13) spaced apart and vertically fixed to the top surface of the base plate (11). The two opposite surfaces of the first side plate (12) and the second side plate (13) define the sliding cavity of the pull rod.

3. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 2, characterized in that, The energy storage assembly (3) further includes an energy storage shaft (31) and an energy storage crank arm (32); the energy storage shaft (31) rotates vertically through the panels of the first side plate (12) and the second side plate (13); the energy storage crank arm (32) is fixed to one end of the energy storage shaft (31) corresponding to the second side plate (13); the first end of the energy storage spring (33) is hinged to the panel of the second side plate (13), and the second end is hung on the energy storage crank arm (32).

4. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 3, characterized in that, The output mechanism (2) also includes an output crank arm (23), the upper end of which is hinged to the three-phase pull rod (21) via a pin. The manual closing mechanism (4) includes a drive arm (42), a cam (43), a drive unit (41), a closing half-shaft (45), a reset spring, and a closing lever (44); the drive arm (42) and the cam (43) are both fixed on the energy storage shaft (31), and the cam (43) is placed in the sliding cavity of the pull rod and can contact the output crank arm (23) as the energy storage shaft (31) rotates; the drive arm (42) is located outside the first side plate (12); the drive unit (41) is sleeved on the energy storage shaft (31) and can be manually operated to reciprocate; during the reciprocating rotation, it passes through The transmission component can release or lock the drive arm (42) to realize the rotation and locking of the energy storage shaft (31); the closing half shaft (45) is rotatably connected to the panel of the first side plate (12) and arranged parallel to the energy storage shaft (31); one end of the reset spring is fixed on the first side plate (12) and the other end is connected to the closing half shaft (45) to realize the interlocking reset of the closing half shaft (45); the rotation of the drive part (41) can drive the closing half shaft (45) to unlock it; the closing lever (44) is hinged to the sliding cavity of the pull rod and can abut against the output crank arm (23).

5. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 4, characterized in that, The drive unit (41) includes a driven ratchet (412), a driving ratchet (411), a pawl (413), and a drive pin (414). The driven ratchet (412) and the driving ratchet (411) are both rotatably mounted on the energy storage shaft (31) and correspond to the outside of the first side plate (12). The first end of the pawl (413) is fixed to the end face of the driven ratchet (412), and the second end extends into the tooth groove of the driving ratchet (411). There is a gap between the second end face of the pawl (413) and the tooth contact surface of the driving ratchet (411) to form a transmission idle stroke. The drive pin (414) is fixed to the end face of the driven ratchet (412) and can contact the drive arm (42) with the rotation of the driven ratchet (412) to realize the rotation of the energy storage shaft (31).

6. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 5, characterized in that, The drive unit (41) also includes a ratchet pawl (415), one end of which is hinged to the side wall of the output crank arm (23), and the other end can be inserted into the tooth groove of the driven ratchet (412), allowing the driven ratchet (412) to rotate in only one direction.

7. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 6, characterized in that, The manual closing mechanism (4) also includes a connecting stop (48), a trip plate (46) and an interlocking plate (47); there are two output crank arms (23), and a first roller (25) and a second roller (26) are respectively hinged between the lower ends of the two output crank arms (23). The closing half shaft (45) is provided with a relief groove (451), and the lower end of the closing lever (44) can pass through the relief groove (451). The cam (43) can contact the first roller (25); one end of the connecting stop (48) is hinged to the closing latch (44), and the other end can contact the second roller (26); The trip plate (46) is fixed to the end of the closing half shaft (45), and the interlock plate (47) is fixed to the end face of the driving ratchet (411) and can abut against the trip plate (46).

8. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 7, characterized in that, It also includes a torsion spring (49), one end of which is fixed to the closing lever (44), and the other end is connected to the connecting stop (48).

9. A permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to any one of claims 1 to 8, characterized in that, The permanent magnet operating mechanism (6) includes a static magnetic yoke (61), a push rod (62), and a permanent magnet crank arm (63); the static magnetic yoke (61) is fixed on the base (1), one end of the push rod (62) is connected to the output end of the static magnetic yoke (61), one end of the permanent magnet crank arm (63) is fixed to the other end of the push rod (62), and the other end of the permanent magnet crank arm (63) is fixed on the three-phase pull rod (21).

10. The permanent magnet spring-loaded integrated column-mounted switch operating mechanism according to claim 9, characterized in that, The manual tripping mechanism (5) includes a manual tripping shaft (51) and a manual tripping cam (52); the manual tripping shaft (51) is rotatably connected to the first side plate (12) of the base (1), and the manual tripping cam (52) is fixed on the manual tripping shaft (51), and its arc-shaped convex surface corresponds to the top rod (62).

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