Electric operating mechanism of reclosing circuit breaker

Abstract

A kind of electric operating mechanism of reclosing circuit breaker comprises a crank mechanism and a slider, one end of the slider is provided with a handle groove which is loosely fitted on the control handle, the other end of the slider is provided with a slide groove which is sleeved on the crank mechanism, the groove walls on both sides of the slide groove protrude inward to form two driving mechanisms, the two driving mechanisms are arranged on both sides of the crank mechanism with intervals and relative to each other, when the crank mechanism pushes the driving mechanism on one side during rotation, it can drive the control handle to open the circuit, when the crank mechanism pushes the driving mechanism on the other side, it can drive the control handle to close the circuit, after the control handle is closed and opened, the crank mechanism rotates to a position between the two driving mechanisms and spaced from the driving mechanisms on both sides, so that the two driving mechanisms can move on both sides of the crank mechanism respectively under the drive of the control handle, and the crank mechanism will not block the driving mechanism and the control handle.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to an electric operating mechanism for a reclosing circuit breaker. Background Art

[0002] Reclosing circuit breakers are widely used in power transmission and distribution circuits to control and protect circuits. Reclosing circuit breakers have two modes: electric operation and manual operation. Electric operation can replace manual operation without the need for operators to arrive at the site, enabling the reclosing circuit breaker to be opened and closed under remote signal control.

[0003] Although the existing reclosing circuit breaker can drive the control handle to open and close the circuit breaker through multiple connecting rods or gears and racks in the electric operation mode, it still has the following disadvantages:

[0004] 1. When the motor drives the control handle to open and close through multiple connecting rods, the size and direction of the force are constantly changing when the multiple connecting rods rotate, and a "dead point" position is prone to occur. In order to avoid jamming at the "dead point", a larger power motor must be selected, which not only leads to higher costs, but also has the problem of large size.

[0005] 2. When the motor drives the control handle to open and close the switch through gears and racks, it not only takes up a large space, but also has a complex structure, many parts, complex processes, and relatively high costs. Summary of the invention

[0006] The purpose of the invention is to overcome the defects of the prior art and provide an electric operating mechanism for a reclosing circuit breaker without a dead point position.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] The invention discloses an electric operating mechanism for a reclosing circuit breaker, comprising a crank mechanism and a slider, wherein the slider is connected to a control handle, and drive mechanisms are respectively provided on both sides of the crank mechanism corresponding to the slider, and the drive mechanisms on both sides respectively comprise a plurality of drive protrusions arranged at intervals, and the crank mechanism is provided with a plurality of eccentric shafts corresponding one to one with the drive protrusions, and when the crank mechanism rotates toward the drive mechanism on one side, the plurality of eccentric shafts can be driven to push the corresponding drive protrusions in the drive mechanism on this side in turn, so that the plurality of drive protrusions of the drive mechanism on this side respectively drive the slider to push the control handle to move toward one side.

[0009] Preferably, one end of the slider is provided with a handle groove which is loosely fitted on the control handle, and the other end of the slider is provided with a slide groove which is sleeved on multiple eccentric shafts, and the driving mechanism is formed by the slide grooves protruding inwardly from the groove walls which are respectively arranged on both sides of the multiple eccentric shafts.

[0010] Preferably, the crank mechanism includes a turntable connected to multiple eccentric shafts respectively, and the turntable is connected to the motor and the hand lever respectively through two clutch mechanisms. The motor and the hand lever can respectively drive the turntable to rotate through their respective corresponding clutch mechanisms, while separating the clutch mechanism corresponding to the other from the turntable.

[0011] Preferably, the slider is provided with a plurality of indication marks, and the housing of the reclosing circuit breaker is provided with an indication window, and the slider can drive the corresponding indication marks to move toward the indication window when moving.

[0012] Preferably, it also includes a guiding mechanism for limiting the slider, and the slider is limited by the guiding mechanism to move linearly in a direction parallel to the moving direction of the control handle. The guiding mechanism includes at least two guiding grooves that form a U-shaped structure and are arranged opposite to each other. The length direction of the guiding groove is arranged parallel to the moving direction of the control handle. The slider is arranged between the opposite guiding grooves, and guide rails are respectively provided on both sides of the slider and are inserted into the corresponding side guide grooves for sliding cooperation.

[0013] Preferably, the crank mechanism includes a turntable and a first eccentric shaft and a second eccentric shaft arranged at intervals on the turntable, the first eccentric shaft and the second eccentric shaft are arranged at intervals, and the distances between the first eccentric shaft and the second eccentric shaft and the rotation center of the turntable are equal, the two driving mechanisms respectively include a long driving protrusion and a short driving protrusion, the length of the short driving protrusion is smaller than the length of the long driving protrusion to avoid the first eccentric shaft and the second eccentric shaft, and the first eccentric shaft pushes the long driving protrusion while driving the short driving protrusion to move to the rotation path of the second eccentric shaft.

[0014] Preferably, when the reclosing circuit breaker is not tripped, the short drive protrusion is located outside the rotation path of the first eccentric shaft, and the long drive protrusion is located on the rotation path of the first eccentric shaft; when the reclosing circuit breaker is tripped, the short drive protrusion moves to the rotation path of the first eccentric shaft to drive the long drive protrusion to cooperate with the first eccentric shaft, and the first eccentric shaft can push the short drive protrusion to make the reclosing circuit breaker trip again.

[0015] Preferably, the two driving mechanisms are respectively a closing driving mechanism and an opening driving mechanism; when the crank mechanism pushes the closing driving mechanism, it drives the control handle to close the switch; when the crank mechanism pushes the opening driving mechanism, it drives the control handle to open the switch; the first eccentric shaft and the second eccentric shaft are respectively at equal distances from the rotation center of the turntable, the distance between the first eccentric shaft and the second eccentric shaft is La, the distance L1 between the two driving protrusions of the closing driving mechanism is greater than or equal to La, and the distance L2 between the two driving protrusions of the opening driving mechanism is less than or equal to La.

[0016] Preferably, the eccentric shaft is provided with a rotatable sleeve, and the sleeve is in rolling cooperation with the driving protrusion.

[0017] Preferably, the two clutch mechanisms respectively include an active part and a driven part, the active parts of the two clutch mechanisms are respectively connected to the motor and the hand lever, and the driven parts of the two clutch mechanisms are respectively connected to the crank mechanism; when the motor and the hand lever rotate to one side, they can drive the connected active part to push the corresponding driven part to rotate horizontally, so that the driven part drives the crank mechanism to open and close the control handle, and at the same time, the crank mechanism drives the other corresponding driven part and active part to separate in the horizontal direction.

[0018] The reclosing circuit breaker created by the present invention pushes the corresponding driving protrusions in sequence through two eccentric shafts. After the first eccentric shaft pushes the corresponding driving protrusion a certain distance, the second eccentric shaft pushes the corresponding second driving protrusion at a new angle, so that the component force of the crank mechanism acting in the moving direction of the control handle becomes larger again. The two-stage push can not only maximize the use of the output of the motor, but also avoid the problem of dead point causing jamming. In addition, the crank mechanism is located between the two drive mechanisms and will not block the drive mechanism and the control handle, so that when the reclosing circuit breaker is tripped, the rebound force of the control handle is prevented from acting on the motor through the drive mechanism and the crank mechanism, thereby preventing the motor from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an electric operating mechanism of a reclosing circuit breaker according to an embodiment of the present invention;

[0020] Figure 2 It is an exploded view of the electric operating mechanism of the reclosing circuit breaker according to the embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of a slider according to an embodiment of the present invention;

[0022] Figure 4 It is a front view of a slider according to an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of an eccentric shaft according to an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the coordination between the crank mechanism and the slider in the embodiment of the invention;

[0025] Figure 7 It is a schematic structural diagram of a clutch mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] like Figure 1-3As shown, an electric operating mechanism of a reclosing circuit breaker includes a crank mechanism 300 and a slider 400, the slider 400 is connected to the control handle 200, and the slider 400 is provided with a driving mechanism 600 on both sides of the crank mechanism 300 corresponding to each other, and the driving mechanisms 600 on both sides respectively include a plurality of spaced driving protrusions, and the crank mechanism 300 is provided with a plurality of eccentric shafts 320 corresponding to the driving protrusions one by one. When the crank mechanism 300 rotates toward the driving mechanism 600 on one side, it can drive the plurality of eccentric shafts 320 to push the corresponding driving protrusions in the driving mechanism 600 on this side in turn, so that the plurality of driving protrusions of the driving mechanism 600 on this side respectively drive the slider 400 to push the control handle 200 to move toward one side.

[0027] In this embodiment, each drive mechanism 600 includes two drive protrusions, and the crank mechanism 300 is provided with two eccentric shafts 320. Since the eccentric shaft 320 pushes the drive protrusion while rotating, the farther the eccentric shaft 320 pushes the drive protrusion, the smaller the component force of the driving force in the moving direction of the control handle 200 is. The two eccentric shafts push the corresponding drive protrusions in turn. After the first eccentric shaft pushes the corresponding drive protrusion for a certain distance, the second eccentric shaft pushes the corresponding second drive protrusion at a new angle, so that the component force of the crank mechanism acting on the moving direction of the control handle becomes larger again. Through the two-stage push, not only can the output of the motor be maximized, but also the problem of dead point causing stagnation can be avoided. In addition, the crank mechanism 300 is located between the two drive mechanisms 600, and will not block the drive mechanism 600 and the control handle 200, so as to avoid that when the reclosing circuit breaker is tripped, the rebound force of the control handle 200 always acts on the motor 140 through the drive mechanism 600 and the crank mechanism 300, thereby preventing the motor 140 from being damaged. It is understandable that the number of driving protrusions and eccentric shafts 320 may also be increased, all within the protection scope of the present invention.

[0028] The following is combined with Figures 1 to 7 The given embodiments further illustrate the specific implementation of the electric operating mechanism of the reclosing circuit breaker created by the present invention. The electric operating mechanism of the reclosing circuit breaker created by the present invention is not limited to the description of the following embodiments.

[0029] like Figure 2 As shown, the electric operating mechanism of the reclosing circuit breaker of this embodiment includes a guide mechanism fixed on the housing of the reclosing circuit breaker and arranged parallel to the moving direction of the control handle 200, and a slider 400 limited on the guide mechanism, and the motor 140 is arranged below the control handle 200 in parallel to the moving direction of the control handle 200, as shown in FIG. Figure 3As shown, the length direction of the slider 400 is arranged parallel to the moving direction of the control handle 200, one end of the slider 400 is provided with a handle groove 410 that is loosely fitted on the control handle 200, and the other end of the slider 400 is provided with a slide groove 420 that is sleeved on multiple eccentric shafts 320, and the driving mechanism 600 is formed by the slide groove 420 protruding inwardly from the groove walls that are respectively arranged on both sides of the multiple eccentric shafts 320.

[0030] like Figure 2 As shown, the guide mechanism includes at least two guide grooves 511 that form a U-shaped structure and are arranged opposite to each other. The length direction of the guide grooves 511 is arranged parallel to the moving direction of the control handle 200. The slider 400 is arranged between the opposite guide grooves 511, and guide rails 512 that are inserted into the corresponding side guide grooves 511 and slide in cooperation are respectively provided on both sides of the slider 400.

[0031] Furthermore, the slider 400 is provided with a plurality of indication marks 431, and the housing of the reclosing circuit breaker is provided with an indication window, and the slider 400 can drive the corresponding indication mark 431 to move toward the indication window (not shown in the figure) when moving. Since the slider 400 will not be blocked by the crank mechanism 300 when tripping, a plurality of indication marks 431 can be provided on the slider 400 to have an indication function, especially a "TRIP" indication mark 431 corresponding to tripping, and of course, an "ON" indication mark 431 corresponding to closing and an "OFF" indication mark 431 corresponding to opening can also be included.

[0032] Furthermore, the crank mechanism 300 includes a turntable 310 connected to a plurality of eccentric shafts 320 respectively. The turntable 310 is connected to the motor 140 and the hand lever 150 respectively through two clutch mechanisms. The motor 140 and the hand lever 150 can respectively drive the turntable 310 to rotate through their respective corresponding clutch mechanisms, while separating the clutch mechanism corresponding to the other from the turntable 310. The clutch mechanism enables the motor 140 and the hand lever 150 to only drive the turntable 310 to rotate in one direction to one side. When the motor 140 and the hand lever 150 rotate in the opposite direction to the other side, the corresponding clutch mechanism idles and the turntable 310 does not rotate.

[0033] The projection of the rotation center of the turntable 310 along the moving direction of the control handle 200 is located between the projections of the two drive mechanisms 600 along the moving direction of the control handle 200. The motor 140 and the hand lever 150 drive the turntable 310 to rotate half a circle each time, and the eccentric shaft 320 pushes the drive mechanism 600 on one side and then rotates to between the two drive mechanisms 600. Preferably, as Figure 5 As shown, the eccentric shaft 320 is provided with a rotatable sleeve 323, and the sleeve 323 and the driving protrusion are in rolling cooperation, and the friction force can be effectively reduced through the rolling cooperation.

[0034] Specifically, the rotating disk 310 is provided with two eccentric shafts 320 spaced apart along the rotation direction, and the two eccentric shafts 320 are at equal distances from the rotation center, and the two eccentric shafts 320 are respectively a first eccentric shaft 321 and a second eccentric shaft 322, and the first eccentric shaft 321 is arranged in front of the second eccentric shaft 322 in the rotation direction of the rotating disk 310;

[0035] The two driving mechanisms 600 respectively include two driving protrusions arranged at intervals, the two driving protrusions are respectively a long driving protrusion and a short driving protrusion, and the length of the short driving protrusion is shorter than the length of the long driving protrusion to avoid the first eccentric shaft 321 and the second eccentric shaft 322.

[0036] When the reclosing circuit breaker is not tripped, the short driving protrusion is located outside the rotation path of the first eccentric shaft 321, and the long driving protrusion is located on the rotation path of the first eccentric shaft 321. When the first eccentric shaft 321 pushes the long driving protrusion, it drives the short driving protrusion to move to the rotation path of the second eccentric shaft 322, and then pushes the short driving protrusion through the second eccentric shaft 322, driving the control handle 200 to continue moving until the opening and closing positions are in place, and then the second eccentric shaft 322 is separated from the short driving protrusion.

[0037] When the reclosing circuit breaker is tripped, the control handle 200 drives the slider 400 to move in the opening direction, and the short driving protrusion moves to the rotation path of the first eccentric shaft 321 to drive the long driving protrusion to cooperate with the first eccentric shaft 321. The first eccentric shaft 321 can push the short driving protrusion to make the reclosing circuit breaker trip again.

[0038] Specifically, the two driving mechanisms 600 are respectively a closing driving mechanism 610 and an opening driving mechanism 620. The closing driving mechanism 610 and the opening driving mechanism 620 are relatively arranged on the left and right sides of the crank mechanism 300 perpendicular to the moving direction of the control handle 200, and the closing driving mechanism 610 is arranged on the side of the opening driving mechanism 620 close to the closing direction. When the crank mechanism 300 rotates clockwise to push the closing driving mechanism 610, it drives the control handle 200 to move in the closing direction. When the crank mechanism 300 rotates clockwise to push the opening driving mechanism 620, it drives the control handle 200 to move in the opening direction.

[0039] The two driving protrusions of the closing drive mechanism 610 are respectively a first closing protrusion 611 and a second closing protrusion 612, the length H11 of the first closing protrusion 611 is greater than the length H12 of the second closing protrusion 612, and the second closing protrusion 612 is arranged at a distance on the side of the first closing protrusion 611 away from the closing direction;

[0040] See also Figure 6In the open position shown, the first closing protrusion 611 is located on the rotation path of the first eccentric shaft 321, and the second closing protrusion 612 is spaced apart on the horizontal side of the first eccentric shaft 321, that is, the second closing protrusion 612 is located outside the rotation path of the first eccentric shaft 321, and the first eccentric shaft 321 can only push the first closing protrusion 611 upward, and drive the second closing protrusion 612 to move upward and contact the second eccentric shaft 322.

[0041] The two driving protrusions of the opening gate driving mechanism 620 are respectively a first opening gate protrusion 621 and a second opening gate protrusion 622, the length H21 of the first opening gate protrusion 621 is greater than the length H22 of the second opening gate protrusion 622, and the second opening gate protrusion 622 is arranged at a distance on the side of the first opening gate protrusion 621 away from the opening direction;

[0042] Referring to the closing position shown in the figure, the principle is the same as that of the opening position. The first eccentric shaft 321 can only push the first opening protrusion 621 downward, and drive the second opening protrusion 622 to move upward and contact the second eccentric shaft 322 .

[0043] Referring to the closing tripping position shown in the figure, when tripping, the slider 400 drives the first opening protrusion 621 and the second opening protrusion 622 to move downward, and the first opening protrusion 621 leaves the rotation path of the first eccentric shaft 321, while the second opening protrusion 622 moves to the rotation path of the first eccentric shaft 321, so that the first eccentric shaft 321 can push the second opening protrusion 622 to move downward, so that the slider 400 drives the control handle 200 to be locked again;

[0044] Referring to the illustrated opening tripping position, since the motor 140 rotates unidirectionally clockwise, it can only pass through the closing drive protrusion and then push the opening drive protrusion to achieve re-tripping. At the same time, the reclosing circuit breaker cannot be closed before re-tripping. Therefore, the eccentric shaft 320 in the illustrated opening tripping position rotates half a circle to the above-mentioned closing tripping position, and then repeats the above-mentioned closing tripping position process to achieve re-tripping.

[0045] Further, the distance from the first eccentric shaft 321 to the second eccentric shaft 322 is La, the distance from the contact surface of the first closing protrusion 611 used to cooperate with the first eccentric shaft 321 to the contact surface of the second closing protrusion 612 used to cooperate with the second eccentric shaft 322 is L1, and L1≥La; the distance from the contact surface of the first opening protrusion 621 used to cooperate with the first eccentric shaft 321 to the contact surface of the second opening protrusion 622 used to cooperate with the second eccentric shaft 322 is L2, and La≥L2, that is, L1≥La≥L2. During the opening process, the slider 400 needs to drive the handle to pass the re-buckle position first to effectively ensure the opening, while the closing process does not require re-buckles. The slider 400 only needs to move two-thirds of the stroke of the opening process to achieve closing. When the first eccentric shaft 321 and the second eccentric shaft 322 push the first opening protrusion 621 and the second opening protrusion 622 respectively, since La is unchanged and L2≤L1, the slider 400 moves farther during opening, ensuring that the slider 400 passes the re-buckle position and is reliably opened.

[0046] Preferably, the slide groove 420 on the slider 400 is rectangular, and the second closing protrusion 612 and the second opening protrusion 622 are respectively formed by the inward protrusions of two side walls of the slide groove 420 that are arranged opposite to each other in the width direction. The slide groove 420 protrudes inward at the top corner of the second closing protrusion 612 on the side close to the closing direction to form the first closing protrusion 611, and the slide groove 420 protrudes inward at the top corner of the second opening protrusion 622 on the side close to the opening direction to form the first opening protrusion 621. The projections of the first closing protrusion 611 and the first opening protrusion 621 along the length direction of the slide groove 420 do not overlap, and the rotation center of the crank mechanism 300 is located between the projections of the first closing protrusion 611 and the first opening protrusion 621 along the length direction of the slide groove 420. After each rotation, the first eccentric shaft 321 and the second eccentric shaft 322 are also located between the projections of the first closing protrusion 611 and the first opening protrusion 621 along the length direction of the slide groove 420.

[0047] like Figure 6 The specific action process of the slider 400 is shown:

[0048] In the electric operation mode, the motor 140 drives the turntable 310 to rotate clockwise, and in the manual operation mode, the hand lever 150 drives the turntable 310 to rotate clockwise. The turntable 310 rotates half a circle each time, so that the first eccentric shaft 321 and the second eccentric shaft 322 are located between the driving mechanisms 600 on both sides before and after the rotation.

[0049] The process of the control handle 200 moving from the closing position to the opening position is that the first eccentric shaft 321 rotates clockwise from the closing position shown in the figure, pushing the first opening protrusion 621 to the opening process shown in the figure, and the second eccentric shaft 322 contacts the second opening protrusion 622 before the first eccentric shaft 321 leaves the first opening protrusion 621, and the second opening protrusion 622 is pushed to the opening position shown in the figure by the second eccentric shaft 322;

[0050] The process of the control handle 200 moving from the open position to the closed position is that the first eccentric shaft 321 rotates clockwise from the open position shown in the figure, pushing the first closing protrusion 611 to the closing process shown in the figure, and the second eccentric shaft 322 contacts the second closing protrusion 612 before the first eccentric shaft 321 leaves the first closing protrusion 611, and pushes the second closing protrusion 612 to the closing position shown in the figure through the second eccentric shaft 322.

[0051] If the operating mechanism is tripped due to a fault in the closing position, the control handle 200 drives the slider 400 to move downward to the closing tripping position. If the operating mechanism is tripped due to a fault in the opening position, the control handle 200 drives the slider 400 to move upward to the opening tripping position. The operating mechanism can be closed again only when it is released. Otherwise, closing cannot be performed.

[0052] When re-engaging from the closed tripping position, the first eccentric shaft 321 rotates clockwise from the closed tripping position shown in the figure, and the second opening protrusion 622 is pushed by the first eccentric shaft 321, so that the slider 400 pushes the control handle 200 downward to complete the re-engaging, and the first eccentric shaft 321 and the second eccentric shaft 322 finally rotate to the lower position between the two driving mechanisms 600;

[0053] When the switch is re-engaged from the opening tripping position, the first eccentric shaft 321 starts to rotate clockwise from the opening tripping position shown in the figure, and the first eccentric shaft 321 pushes the second closing protrusion 612 to move the slider 400 upward. Since the operating mechanism has not been re-engaged, the switch cannot be closed. At this time, the first eccentric shaft 321 and the second eccentric shaft 322 rotate to the upper position between the two driving mechanisms 600, so the first eccentric shaft 321 continues to rotate clockwise, and the second closing and opening protrusion is pushed by the first eccentric shaft 321, so that the slider 400 pushes the control handle 200 downward to complete the re-engaging. The first eccentric shaft 321 continues to rotate away from the second opening protrusion 622, and the first eccentric shaft 321 and the second eccentric shaft 322 finally rotate to the lower position between the two driving mechanisms 600.

[0054] like Figure 7 As shown, the crank mechanism 300 is connected to the motor 140 and the hand lever 150 respectively through two clutch mechanisms. The clutch mechanisms enable the motor 140 and the hand lever 150 to only drive the turntable 310 to rotate in a clockwise direction.

[0055] Specifically, the two clutch mechanisms include a driving member 1 and a driven member 2, respectively. The driving members 1 of the two clutch mechanisms are respectively connected to the output shaft 141 of the motor 140 and the hand lever 150, and the driven members 2 of the two clutch mechanisms are respectively connected to the crank mechanism 300. When the motor 140 or the hand lever 150 rotates to one side, it can drive the connected driving member 1 to push the corresponding driven member 2 to rotate horizontally, so that the driven member 2 drives the crank mechanism 300 to rotate and drives the handle 200 through the driving mechanism 600 to realize the opening and closing of the switch. At the same time, the crank mechanism 300 drives the driven member 2 and the driving member 1 corresponding to the other hand lever 150 in the motor 140 to separate and idle in the horizontal direction.

[0056] When the motor 140 and the hand lever 150 rotate to the other side, the connected active member 1 and the corresponding driven member 2 are driven to rotate idly separately.

[0057] Furthermore, the structures of the two clutch mechanisms of the present embodiment are basically the same, both of which are ratchet clutch methods with external meshing. The active member 1 is a ratchet, and the driven member 2 is a pawl. The pawl is limited by a spring 3 on multiple inclined ratchet teeth around the ratchet. One side of the ratchet tooth can be limited by the pawl so that the pawl can be driven to rotate when the ratchet wheel rotates to that side, and the other side of the ratchet tooth can push the pawl away from the ratchet wheel so that the pawl is pushed away when the ratchet wheel rotates to that side.

[0058] Specifically, the crank mechanism 300 includes a base plate 133 arranged opposite to the turntable 310, and two mounting plates 131 arranged between the base plate 133 and the turntable 310. The turntable 310, the base plate 133, the cover plate 134, the electric mounting plate 131 and the manual mounting plate 132 are fixedly connected by screws 135. The ratchets of the two clutch mechanisms are respectively arranged on the inner sides of the two mounting plates 131. The pawls of the two clutch mechanisms are respectively limited circumferentially by the two mounting plates 131. When the ratchet pushes the corresponding pawl to rotate, the pawl drives the corresponding mounting plate 131 and the turntable 310 to rotate, and then the eccentric shaft 320 on the turntable 310 pushes the slider 400 to drive the control handle 200 to realize opening and closing and re-locking.

[0059] Preferably, the hand lever 150 is provided with a hexagonal groove. When manual operation is required, a wrench can be inserted into the hexagonal groove, and the hand lever 150 can be driven to rotate by the wrench. Of course, the hand lever 150 can also be integrally formed with the corresponding ratchet. It is understandable that the structures of the two clutch mechanisms can also be different, and the ratchet clutch mode of the inner core can also be adopted, which all belong to the protection scope of the invention.

[0060] The above content is a further detailed description of the invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the invention is limited to these descriptions. For ordinary technicians in the technical field to which the invention belongs, several simple deductions or substitutions can be made without departing from the concept of the invention, which should be regarded as falling within the scope of protection of the invention.

Claims

1. An electric operating mechanism for a reclosing circuit breaker, characterized in that: The invention comprises a crank mechanism (300) and a slider (400), wherein the slider (400) is connected to a control handle (200), and the slider (400) is provided with a driving mechanism (600) on both sides of the crank mechanism (300) respectively, and the driving mechanisms (600) on both sides respectively comprise a plurality of driving protrusions arranged at intervals, and the crank mechanism (300) is provided with a plurality of eccentric shafts (320) corresponding to the driving protrusions one by one, and when the crank mechanism (300) rotates toward the driving mechanism (600) on one side, it can drive the plurality of eccentric shafts (320) to push the driving protrusions in sequence. The corresponding driving protrusions in the side driving mechanism (600) enable the multiple driving protrusions of the side driving mechanism (600) to respectively drive the slider (400) to push the control handle (200) to move to one side; the driving mechanisms (600) on both sides are respectively a closing driving mechanism (610) and an opening driving mechanism (620); when the crank mechanism (300) pushes the closing driving mechanism (610), it drives the control handle (200) to close the switch; when the crank mechanism (300) pushes the opening driving mechanism (620), it drives the control handle (200) to open the switch.

2. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: One end of the slider (400) is provided with a handle groove (410) which is loosely fitted on the control handle (200), and the other end of the slider (400) is provided with a slide groove (420) which is sleeved on a plurality of eccentric shafts (320). The driving mechanism (600) is formed by the slide groove (420) protruding inwardly from the groove walls which are respectively arranged on both sides of the plurality of eccentric shafts (320).

3. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The crank mechanism (300) comprises a rotating disk (310) respectively connected to a plurality of eccentric shafts (320); the rotating disk (310) is respectively connected to a motor (140) and a hand lever (150) via two clutch mechanisms; the motor (140) and the hand lever (150) can respectively drive the rotating disk (310) to rotate via their respective corresponding clutch mechanisms, while simultaneously separating the clutch mechanism corresponding to the other from the rotating disk (310).

4. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The slider (400) is provided with a plurality of indication marks (431), and the housing of the reclosing circuit breaker is provided with an indication window, and the slider (400) can drive the corresponding indication marks (431) to move toward the indication window when moving.

5. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The invention also comprises a guide mechanism for limiting the slider (400), wherein the slider (400) is limited by the guide mechanism to move linearly in a direction parallel to the moving direction of the control handle (200), wherein the guide mechanism comprises at least two guide grooves (511) which form a U-shaped structure and are arranged opposite to each other, wherein the length direction of the guide grooves (511) is arranged parallel to the moving direction of the control handle (200), and the slider (400) is arranged between the opposite guide grooves (511), and guide rails (512) which are inserted into the corresponding side guide grooves (511) and slideably cooperate with each other are respectively arranged on both sides of the slider (400).

6. The electric operating mechanism of the reclosing circuit breaker according to claim 1, characterized in that: The crank mechanism (300) comprises a rotating disk (310) and a first eccentric shaft (321) and a second eccentric shaft (322) arranged at intervals on the rotating disk (310); the first eccentric shaft (321) and the second eccentric shaft (322) are arranged at intervals; the two driving mechanisms (600) respectively comprise a long driving protrusion and a short driving protrusion; the length of the short driving protrusion is shorter than the length of the long driving protrusion to avoid the first eccentric shaft (321) and the second eccentric shaft (322); the first eccentric shaft (321) pushes the long driving protrusion while driving the short driving protrusion to move to the rotation path of the second eccentric shaft (322).

7. The electric operating mechanism of the reclosing circuit breaker according to claim 6, characterized in that: When the reclosing circuit breaker is not tripped, the short driving protrusion is located outside the rotation path of the first eccentric shaft (321), and the long driving protrusion is located on the rotation path of the first eccentric shaft (321); when the reclosing circuit breaker is tripped, the short driving protrusion moves to the rotation path of the first eccentric shaft (321) to drive the long driving protrusion to cooperate with the first eccentric shaft (321), and the first eccentric shaft (321) can push the short driving protrusion to re-tighten the reclosing circuit breaker.

8. The electric operating mechanism of the reclosing circuit breaker according to claim 6, characterized in that: The first eccentric shaft (321) and the second eccentric shaft (322) are respectively at equal distances from the rotation center of the rotating disk (310), the distance between the first eccentric shaft (321) and the second eccentric shaft (322) is La, the distance L1 between the two driving protrusions of the closing drive mechanism (610) is greater than or equal to La, and the distance L2 between the two driving protrusions of the opening drive mechanism (620) is less than or equal to La.

9. The electric operating mechanism of the reclosing circuit breaker according to claim 2, characterized in that: The eccentric shaft (320) is provided with a rotatable shaft sleeve (323), and the shaft sleeve (323) is in rolling cooperation with the driving protrusion.

10. The electric operating mechanism of the reclosing circuit breaker according to claim 3, characterized in that: The two clutch mechanisms respectively comprise an active member (1) and a driven member (2); the active members (1) of the two clutch mechanisms are respectively connected to the motor (140) and the hand lever (150); and the driven members (2) of the two clutch mechanisms are respectively connected to the crank mechanism (300); when the motor (140) and the hand lever (150) rotate to one side, they can drive the connected active member (1) to push the corresponding driven member (2) to rotate horizontally, so that the driven member (2) drives the crank mechanism (300) to open and close the control handle (200), and at the same time, the crank mechanism (300) drives the other corresponding driven member (2) and active member (1) to separate in the horizontal direction.

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