CN213184173U

CN213184173U - Electric operating mechanism of reclosing circuit breaker

Info

Publication number: CN213184173U
Application number: CN202021617582.5U
Authority: CN
Inventors: 杨平双; 周勇
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-05-11
Anticipated expiration: 2030-08-06

Abstract

The utility model provides an electric operating mechanism of reclosing circuit breaker, it includes crank mechanism and slider, the one end of slider is equipped with the cover clearance fit's handle groove on brake valve lever, the other end of slider is equipped with the spout of cover on crank mechanism, the both sides cell wall of spout is protruding to the inboard and forms two actuating mechanism, two actuating mechanism interval sets up the both sides at crank mechanism relatively, crank mechanism can drive brake valve lever separating when the actuating mechanism of rotation in-process promotion one side, can drive brake valve lever closing when promoting the actuating mechanism of opposite side, crank mechanism closes a floodgate and rotates to between two actuating mechanism behind brake valve lever closing and separating, and with the actuating mechanism spaced position of both sides, make two actuating mechanism can remove respectively in crank mechanism's both sides under the control lever drive, crank mechanism can not block actuating mechanism and brake valve lever.

Description

Electric operating mechanism of reclosing circuit breaker

Technical Field

The invention relates to the field of low-voltage electric appliances, in particular to an electric operating mechanism of a reclosing circuit breaker.

Background

The reclosing circuit breaker is widely used in a power transmission and distribution circuit and plays a role in controlling and protecting the circuit, the reclosing circuit breaker has two modes of electric operation and manual operation, the electric operation can replace the manual operation, an operator is not required to arrive at a site, and the reclosing circuit breaker can be switched on and off under the control of a remote signal.

Although the existing reclosing circuit breaker is in an electric operation mode, the motor can drive the control handle to switch on and off through a plurality of connecting rods or a gear and a rack, the existing reclosing circuit breaker still has the following defects:

1. when the motor drives the brake-closing of the control handle through a plurality of connecting rods, the size and the direction of force are constantly changed when the connecting rods rotate, the position of a dead point is easy to appear, clamping stagnation is avoided to appear at the dead point, a motor with larger power needs to be selected for use, the cost is higher, and the problem of large size is solved.

2. When the motor drives the control handle to switch on and off through the gear and the rack, the motor not only occupies a large space, but also has a complex structure, a plurality of parts, a complex process and higher cost.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an electric operating mechanism of a reclosing circuit breaker without a dead point position.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an electric operating mechanism of reclosing circuit breaker, its includes crank mechanism and slider, and the slider is connected with brake valve lever, and the slider correspondence is equipped with actuating mechanism respectively in crank mechanism's both sides, and the actuating mechanism of both sides includes the drive arch that a plurality of intervals set up respectively, crank mechanism is equipped with a plurality of eccentric shafts with the protruding one-to-one correspondence of drive, and when crank mechanism rotated to the actuating mechanism of one side, can drive a plurality of eccentric shafts and promote the drive arch that corresponds separately in the actuating mechanism of this side in proper order, made a plurality of drive archs of the actuating mechanism of this side drive the slider respectively and promote brake valve lever to remove to one side.

Preferably, one end of the sliding block is provided with a handle groove which is sleeved on the control handle in clearance fit, the other end of the sliding block is provided with a sliding groove which is sleeved on the eccentric shafts, and the driving mechanism is formed by inwards protruding groove walls of the sliding grooves which are oppositely arranged on two sides of the eccentric shafts.

Preferably, the crank mechanism comprises a rotating disc respectively connected with the eccentric shafts, the rotating disc is respectively connected with the motor and the manual operating rod through two clutch mechanisms, the motor and the manual operating rod can respectively drive the rotating disc to rotate through the respective corresponding clutch mechanisms, and meanwhile, the other corresponding clutch mechanism is separated from the rotating disc.

Preferably, a plurality of indication marks are arranged on the sliding block, an indication window is arranged on a shell of the reclosing circuit breaker, and the sliding block can drive the corresponding indication marks to move towards the indication window when moving.

Preferably, still including the guiding mechanism who is used for spacing slider, the slider is by guiding mechanism spacing in the direction parallel with brake valve lever moving direction linear motion, guiding mechanism includes two at least guide chutes that form U type structure and set up relatively, and the length direction of guide chute and brake valve lever's moving direction parallel arrangement, the slider sets up between relative guide chute, is equipped with respectively in the both sides of slider and inserts corresponding side guide chute sliding fit's guide rail.

Preferably, the crank mechanism comprises a rotary table, and a first eccentric shaft and a second eccentric shaft which are arranged on the rotary table at intervals, the first eccentric shaft and the second eccentric shaft are arranged at intervals, the distances from the first eccentric shaft and the second eccentric shaft to the rotation center of the rotary table are equal, the two driving mechanisms respectively comprise a long driving bulge and a short driving bulge, the length of the short driving bulge is smaller than that of the long driving bulge so as to avoid the first eccentric shaft and the second eccentric shaft, and the first eccentric shaft drives the long driving bulge and simultaneously drives the short driving bulge to move to the rotation path of the second eccentric shaft.

Preferably, when the reclosing circuit breaker is not tripped, the short driving bulge is positioned outside the rotating path of the first eccentric shaft, and the long driving bulge is positioned on the rotating path of the first eccentric shaft; when the reclosing circuit breaker is tripped, the short driving bulge moves to a rotating path of the first eccentric shaft to drive the long driving bulge to be matched with the first eccentric shaft, and the first eccentric shaft can push the short driving bulge to enable the reclosing circuit breaker to be tripped again.

Preferably, the two driving mechanisms are respectively a closing driving mechanism and an opening driving mechanism, the crank mechanism drives the control handle to close when pushing the closing driving mechanism, and drives the control handle to open when pushing the opening driving mechanism; the distances from the first eccentric shaft and the second eccentric shaft to the rotation center of the turntable are equal, 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.

Preferably, the eccentric shaft is provided with a rotatable shaft sleeve, and the shaft sleeve is matched with the driving bulge in a rolling manner.

Preferably, the two clutch mechanisms respectively comprise a driving part and a driven part, the driving parts of the two clutch mechanisms are respectively connected with the motor and the manual operating rod, and the driven parts of the two clutch mechanisms are respectively connected with the crank mechanism; when the motor and the manual operating rod rotate towards one side, the connected driving piece can be driven to push the corresponding driven piece to rotate horizontally, so that the driven piece drives the crank mechanism to switch on and off the brake control handle, and meanwhile, the crank mechanism drives the driven piece and the driving piece which correspond to the other one to be separated along the horizontal direction.

According to the reclosing circuit breaker, the corresponding driving protrusions are sequentially pushed through the two eccentric shafts, after the corresponding driving protrusions are pushed for a certain distance through the first eccentric shaft, the corresponding second driving protrusions are pushed through the second eccentric shaft at a new angle, so that the component force of the crank mechanism acting on the moving direction of the control handle is increased again, the output of the motor can be utilized to the maximum extent through two-stage pushing, and the problem of clamping stagnation caused by dead points can be solved. In addition, crank mechanism is located between two actuating mechanism, can not block actuating mechanism and brake valve lever, and when avoiding reclosing circuit breaker dropout, brake valve lever's resilience force is used on the motor through actuating mechanism and crank mechanism always, prevents that the motor from damaging.

Drawings

Fig. 1 is a schematic structural diagram of an electric operating mechanism of a reclosing circuit breaker according to an embodiment of the invention;

fig. 2 is an exploded view of an electric operating mechanism of a reclosing circuit breaker according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a slider according to an embodiment of the present invention;

FIG. 4 is a front view of a slider according to an embodiment of the present invention;

FIG. 5 is a schematic view of the eccentric shaft according to the embodiment of the present invention;

FIG. 6 is a schematic view of the crank mechanism and the slider according to the present invention;

fig. 7 is a schematic structural diagram of a clutch mechanism according to an embodiment of the invention.

Detailed Description

As shown in fig. 1 to 3, an electric operating mechanism of a reclosing circuit breaker includes a crank mechanism 300 and a slider 400, the slider 400 is connected to a control handle 200, the slider 400 is provided with driving mechanisms 600 on two sides of the crank mechanism 300 respectively, the driving mechanisms 600 on two sides respectively include a plurality of driving protrusions arranged at intervals, the crank mechanism 300 is provided with a plurality of eccentric shafts 320 corresponding to the driving protrusions one to one, when the crank mechanism 300 rotates towards the driving mechanism 600 on one side, the eccentric shafts 320 can be driven to sequentially push the corresponding driving protrusions in the driving mechanism 600 on the side, so that the driving protrusions of the driving mechanism 600 on the side respectively drive the slider 400 to push the control handle 200 to move towards one side.

In this embodiment, each driving mechanism 600 includes two driving protrusions, the crank mechanism 300 is provided with two eccentric shafts 320, the driving protrusions are pushed by the eccentric shafts 320 while rotating, the farther the distance that the eccentric shafts 320 push the driving protrusions, the smaller the component force of the pushing force in the moving direction of the control handle 200, the corresponding driving protrusions are sequentially pushed by the two eccentric shafts, after the corresponding driving protrusions are pushed by the first eccentric shaft for a certain distance, the corresponding second driving protrusions are pushed by the second eccentric shaft at a new angle, so that the component force of the crank mechanism acting on the moving direction of the control handle is increased again, the output of the motor can be maximized by two-stage pushing, and the problem of clamping stagnation caused by dead points can be avoided. In addition, the crank mechanism 300 is located between the two driving mechanisms 600, so that the driving mechanisms 600 and the control handle 200 are not blocked, and the situation that when the reclosing circuit breaker is tripped, the resilience force of the control handle 200 always acts on the motor 140 through the driving mechanisms 600 and the crank mechanism 300 is avoided, and the motor 140 is prevented from being damaged. It is understood that the number of the driving protrusions and the eccentric shafts 320 may be increased, all falling within the scope of the present invention.

The following describes a specific embodiment of the electric operating mechanism of the reclosing circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 7. The electric operating mechanism of the reclosing circuit breaker created by the present invention is not limited to the description of the following embodiments.

As shown in fig. 2, 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 disposed in parallel with the moving direction of the control handle 200, and a slider 400 limited on the guide mechanism, the motor 140 is disposed below the control handle 200 in parallel with the moving direction of the control handle 200, as shown in fig. 3, the length direction of the slider 400 is disposed in parallel with the moving direction of the control handle 200, one end of the slider 400 is provided with a handle groove 410 which is sleeved on the control handle 200 in a clearance fit manner, the other end of the slider 400 is provided with a sliding groove 420 which is sleeved on the plurality of eccentric shafts 320, and the driving mechanism 600 is formed by inward protrusions of groove walls of the sliding groove 420 which are disposed on both sides of the plurality.

As shown in fig. 2, the guiding mechanism includes at least two guiding sliding grooves 511 which are formed into a U-shaped structure and are oppositely disposed, the length direction of the guiding sliding grooves 511 is disposed in parallel with the moving direction of the control handle 200, the sliding block 400 is disposed between the opposite guiding sliding grooves 511, and two sides of the sliding block 400 are respectively provided with a guiding rail 512 which is inserted into the corresponding guiding sliding groove 511 for sliding fit.

Further, a plurality of indication marks 431 are arranged on the slider 400, an indication window is arranged on a housing of the reclosing circuit breaker, and the slider 400 can drive the corresponding indication marks 431 to move towards the indication window (not shown in the figure) when moving. Since the slider 400 is not blocked by the crank mechanism 300 when being tripped, various indicators 431 can be disposed ON the slider 400 to have an indicating function, particularly the "TRIP" indicator 431 corresponding to the tripping, and of course, the "ON" indicator 431 corresponding to the closing and the "OFF" indicator 431 corresponding to the opening can also be included.

Further, the crank mechanism 300 includes a rotary table 310 connected to the plurality of eccentric shafts 320, the rotary table 310 is connected to the motor 140 and the manual lever 150 through two clutch mechanisms, the motor 140 and the manual lever 150 can drive the rotary table 310 to rotate through the corresponding clutch mechanisms, and the other corresponding clutch mechanism is separated from the rotary table 310, the clutch mechanisms enable the motor 140 and the manual lever 150 to drive the rotary table 310 to rotate in one direction only, the corresponding clutch mechanisms idle when the motor 140 and the manual lever 150 rotate in the opposite direction, and the rotary table 310 does not rotate.

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 driving 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 for half a circle each time, and the eccentric shaft 320 pushes the driving mechanism 600 at one side to rotate to the position between the two driving mechanisms 600. Preferably, as shown in fig. 5, the eccentric shaft 320 is provided with a rotatable shaft sleeve 323, and the shaft sleeve 323 is in rolling fit with the driving protrusion, so that the friction force can be effectively reduced through the rolling fit.

Specifically, the turntable 310 is provided with two eccentric shafts 320 arranged at intervals along the rotation direction, the distances from the two eccentric shafts 320 to the rotation center are equal, the two eccentric shafts 320 are respectively a first eccentric shaft 321 and a second eccentric shaft 322, and the rotation direction of the turntable 310 with the first eccentric shaft 321 is arranged in front of the second eccentric shaft 322;

the two driving mechanisms 600 respectively comprise 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 smaller than that of the long driving protrusion so as to avoid the first eccentric shaft 321 and the second eccentric shaft 322.

When the reclosing circuit breaker is not tripped, the short driving protrusion is located outside the rotating path of the first eccentric shaft 321, the long driving protrusion is located on the rotating path of the first eccentric shaft 321, the first eccentric shaft 321 drives the long driving protrusion and simultaneously drives the short driving protrusion to move to the rotating path of the second eccentric shaft 322, the second eccentric shaft 322 drives the short driving protrusion to drive the control handle 200 to continuously move to the opening and closing position, and then the second eccentric shaft 322 is separated from the short driving protrusion.

When the reclosing circuit breaker is tripped, the control handle 200 drives the slider 400 to move towards the opening direction, the short driving protrusion moves to the rotating path of the first eccentric shaft 321 to drive the long driving protrusion to be matched with the first eccentric shaft 321, and the first eccentric shaft 321 can push the short driving protrusion to enable the reclosing circuit breaker to be tripped again.

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 arranged on the left side and the right side of the crank mechanism 300 in a manner that the moving directions of the two driving mechanisms are perpendicular to the control handle 200, the closing driving mechanism 610 is arranged on one 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, the control handle 200 is driven to move in the closing direction, and when the crank mechanism 300 rotates clockwise to push the opening driving mechanism 620, the control handle 200 is driven to move in the opening direction.

The two driving protrusions of the closing driving mechanism 610 are a first closing protrusion 611 and a second closing protrusion 612, respectively, 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 on one side of the first closing protrusion 611 away from the closing direction at intervals;

referring to the switching position shown in fig. 6, the first closing protrusion 611 is located on the rotation path of the first eccentric shaft 321, and the second closing protrusion 612 is disposed at an interval on one 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 upwards and drive the second closing protrusion 612 to move upwards to contact with the second eccentric shaft 322.

The two driving protrusions of the opening driving mechanism 620 are a first opening protrusion 621 and a second opening protrusion 622 respectively, the length H21 of the first opening protrusion 621 is greater than the length H22 of the second opening protrusion 622, and the second opening protrusion 622 is disposed on one side of the first opening protrusion 621 away from the opening direction at intervals;

referring to the closing position shown in the figure, the first eccentric shaft 321 can only push the first opening protrusion 621 downward and drive the second opening protrusion 622 to move upward to contact with the second eccentric shaft 322 in the same principle as the opening position.

Referring to the illustrated closing trip position, when the trip is performed, the slider 400 drives the first switching protrusion 621 and the second switching protrusion 622 to move downward, and the first switching protrusion 621 leaves the rotation path of the first eccentric shaft 321 while the second switching protrusion 622 moves to the rotation path of the first eccentric shaft 321, so that the first eccentric shaft 321 can push the second switching protrusion 622 to move downward, and the slider 400 drives the control handle 200 to trip;

referring to the illustrated opening trip position, since the motor 140 rotates clockwise in one direction, the eccentric shaft 320 of the illustrated opening trip position rotates half a cycle to the aforementioned closing trip position, and then repeats the process of the aforementioned closing trip position to realize reclosing, because the motor 140 can only push the opening drive protrusion after passing through the closing drive protrusion to realize reclosing, and the reclosing breaker cannot be closed before reclosing again.

Further, the distance from the first eccentric shaft 321 to the second eccentric shaft 322 is La, the first closing protrusion 611 is used for matching with the contact surface of the first eccentric shaft 321, the distance from the second closing protrusion 612 to the contact surface of the second eccentric shaft 322 is L1, and L1 is greater than or equal to La; the distance from the contact surface of the first brake-separating projection 621 for matching with the first eccentric shaft 321 to the contact surface of the second brake-separating projection 622 for matching with the second eccentric shaft 322 is L2, and La is more than or equal to L2, namely L1 is more than or equal to La is more than or equal to L2. In the process of switching off, the sliding block 400 needs to drive the handle to pass through the position of re-buckling firstly, so that switching off can be effectively guaranteed, the switching off process does not need to be buckled again, the sliding block 400 only needs to move two thirds of the stroke in the switching off process to realize switching on, when the first eccentric shaft 321 and the second eccentric shaft 322 respectively push the first switching off protrusion 621 and the second switching off protrusion 622, because La is unchanged and L2 is not more than L1, the sliding block 400 moves farther in the switching off process, and the sliding block 400 is guaranteed to pass through the position of re-buckling to reliably switch off.

Preferably, the sliding groove 420 on the slider 400 is rectangular, the second closing protrusion 612 and the second opening protrusion 622 are respectively formed by inward protrusions of two side walls of the sliding groove 420, the two side walls are opposite to each other in the width direction, a vertex angle of the sliding groove 420 at one side of the second closing protrusion 612 close to the closing direction is protruded inward to form a first closing protrusion 611, a vertex angle of the sliding groove 420 at one side of the second opening protrusion 622 close to the opening direction is protruded inward to form a first opening protrusion 621, projections of the first closing protrusion 611 and the first opening protrusion 621 in the length direction of the sliding groove 420 are not overlapped, 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, and 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 after each rotation.

Fig. 6 shows a specific action process of the slider 400:

in the electric operation mode, the motor 140 drives the turntable 310 to rotate clockwise, in the manual operation mode, the hand lever 150 drives the turntable 310 to rotate clockwise, and each time the turntable 310 rotates for half a circle, the first eccentric shaft 321 and the second eccentric shaft 322 are positioned between the driving mechanisms 600 on both sides before and after rotating;

the process of moving the control handle 200 from the on position to the off position is that the first eccentric shaft 321 rotates clockwise from the on position to push the first switching protrusion 621 to the off position, the second eccentric shaft 322 contacts the second switching protrusion 622 before the first eccentric shaft 321 leaves the first switching protrusion 621, and the second eccentric shaft 322 pushes the second switching protrusion 622 to the off position;

the process of moving the control handle 200 from the open position to the close position includes that the first eccentric shaft 321 rotates clockwise from the open position to push the first closing protrusion 611 to the closed position, the second eccentric shaft 322 contacts the second closing protrusion 612 before the first eccentric shaft 321 leaves the first closing protrusion 611, and the second eccentric shaft 322 pushes the second closing protrusion 612 to the closed position.

If the operating mechanism is tripped due to a fault at the switching-on position, the control handle 200 drives the sliding block 400 to move downwards to the switching-on tripping position, if the operating mechanism is tripped due to a fault at the switching-off position, the control handle 200 drives the sliding block 400 to move upwards to the switching-off tripping position, the operating mechanism is buckled again to enable reclosing, otherwise, the switching-on cannot be carried out;

when the trip is performed again from the closing trip position, the first eccentric shaft 321 starts to rotate clockwise from the illustrated closing trip position, the second switch-off protrusion 622 is pushed by the first eccentric shaft 321, the slider 400 pushes the control handle 200 downwards to complete the trip again, and the first eccentric shaft 321 and the second eccentric shaft 322 finally rotate to the lower position between the two driving mechanisms 600;

when the trip is resumed from the trip release position, the first eccentric shaft 321 starts to rotate clockwise from the trip release position shown in the figure, the first eccentric shaft 321 pushes the second closing protrusion 612 to move the slider 400 upward, and the operating mechanism is not yet resumed, so that the closing cannot be performed, 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, the second closing protrusion is pushed by the first eccentric shaft 321, the slider 400 pushes the control handle 200 downward to complete the resumption, the first eccentric shaft 321 continues to rotate and is away from the second closing 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.

As shown in fig. 7, the crank mechanism 300 is connected to the motor 140 and the hand lever 150 through two clutch mechanisms, and the clutch mechanisms enable the motor 140 and the hand lever 150 to drive the turntable 310 to rotate clockwise in one direction only.

Specifically, the two clutch mechanisms respectively comprise a driving part 1 and a driven part 2, the driving parts 1 of the two clutch mechanisms are respectively connected with the output shaft 141 of the motor 140 and the manual operating rod 150, the driven parts 2 of the two clutch mechanisms are respectively connected with the crank mechanism 300, when the motor 140 or the manual operating rod 150 rotates towards one side, the connected driving part 1 can be driven to push the corresponding driven part 2 to horizontally rotate, the driven part 2 drives the crank mechanism 300 to rotate, the handle 200 is driven by the driving mechanism 600 to realize opening and closing, and meanwhile, the crank mechanism 300 drives the driven part 2 corresponding to the other one of the manual operating rods 150 in the motor 140 and the driving part 1 to separately idle along the horizontal direction;

when the motor 140 and the hand lever 150 rotate to the other side, the driving member 1 and the corresponding driven member 2 which are connected are driven to separate for idle rotation.

Further, the two clutch mechanisms of the two embodiments of the present embodiment have substantially the same structure, and are both in a ratchet clutch mode of outside engagement, the driving part 1 is a ratchet, the driven part 2 is a pawl, the pawl is limited on a plurality of inclined ratchets around the ratchet by the spring 3, one side of the ratchet can be limited by the pawl, so that the pawl is driven to rotate when the ratchet rotates to the side, and the other side of the ratchet can push the pawl to be away from the ratchet, so that the ratchet pushes the pawl to be pushed open when the ratchet rotates to the side.

Specifically, the crank mechanism 300 includes a bottom plate 133 opposite to the turntable 310, and two mounting plates 131 arranged between the bottom plate 133 and the turntable 310, the bottom plate 133, the cover plate 134, the electric operating mounting plate 131 and the hand operating mounting plate 132 are fixedly connected by screws 135, the ratchets of the two clutch mechanisms are respectively arranged at the inner sides of the two mounting plates 131, the pawls of the two clutch mechanisms are respectively circumferentially limited by the two mounting plates 131, when the ratchets push the corresponding pawls to rotate, the pawls drive the corresponding mounting plates 131 and the turntable 310 to rotate, and then the eccentric shafts 320 on the turntable 310 push the slider 400 to drive the control handle 200 to realize opening and closing and re-buckling.

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

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.

Claims

1. The utility model provides an electric operating mechanism of reclosing circuit breaker which characterized in that: the automatic control device comprises a crank mechanism (300) and a sliding block (400), wherein the sliding block (400) is connected with a control handle (200), the sliding block (400) is correspondingly provided with driving mechanisms (600) on two sides of the crank mechanism (300) respectively, the driving mechanisms (600) on the two sides respectively comprise a plurality of driving bulges arranged at intervals, the crank mechanism (300) is provided with a plurality of eccentric shafts (320) which are in one-to-one correspondence with the driving bulges, and when the crank mechanism (300) rotates towards the driving mechanism (600) on one side, the eccentric shafts (320) can be driven to sequentially push the corresponding driving bulges in the driving mechanism (600) on the side respectively, so that the driving bulges of the driving mechanism (600) on the side respectively drive the sliding block (400) to push the control handle (200) on one side to move.

2. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: one end of the sliding block (400) is provided with a handle groove (410) which is sleeved on the control handle (200) in clearance fit, the other end of the sliding block (400) is provided with a sliding groove (420) which is sleeved on the eccentric shafts (320), and the driving mechanism (600) is formed by inwards protruding groove walls of the sliding groove (420) which are oppositely arranged on two sides of the eccentric shafts (320).

3. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: the crank mechanism (300) comprises rotary discs (310) respectively connected with a plurality of eccentric shafts (320), the rotary discs (310) are respectively connected with the motor (140) and the hand operating rod (150) through two clutch mechanisms, the motor (140) and the hand operating rod (150) can respectively drive the rotary discs (310) to rotate through the respective corresponding clutch mechanisms, and meanwhile the other corresponding clutch mechanism is separated from the rotary discs (310).

4. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: the reclosing circuit breaker is characterized in that a plurality of indicating marks (431) are arranged on the sliding block (400), an indicating window is arranged on a shell of the reclosing circuit breaker, and the sliding block (400) can drive the corresponding indicating marks (431) to move towards the indicating window when moving.

5. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: still including the guiding mechanism who is used for spacing slider (400), slider (400) are by guiding mechanism spacing in the direction parallel with brake valve lever (200) moving direction on rectilinear movement, guiding mechanism includes two at least guide chute (511) that form U type structure and relative setting, the length direction of guide chute (511) and the moving direction parallel arrangement of brake valve lever (200), slider (400) set up between relative guide chute (511), are equipped with respectively in the both sides of slider (400) and insert corresponding side guide chute (511) sliding fit's guide rail (512).

6. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: the crank mechanism (300) comprises a rotary disc (310), and a first eccentric shaft (321) and a second eccentric shaft (322) which are arranged on the rotary disc (310) at intervals, wherein 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 bulge and a short driving bulge, the length of the short driving bulge is smaller than that of the long driving bulge so as to avoid the first eccentric shaft (321) and the second eccentric shaft (322), and the first eccentric shaft (321) drives the short driving bulge to move to a rotating path of the second eccentric shaft (322) while pushing the long driving bulge.

7. The electric operating mechanism of a reclosing circuit breaker of claim 6, characterized in that: when the reclosing circuit breaker is not tripped, the short driving bulge is positioned outside the rotating path of the first eccentric shaft (321), and the long driving bulge is positioned on the rotating path of the first eccentric shaft (321); when the reclosing circuit breaker is tripped, the short driving bulge moves to a rotating path of the first eccentric shaft (321) to drive the long driving bulge to be matched with the first eccentric shaft (321), and the first eccentric shaft (321) can push the short driving bulge to enable the reclosing circuit breaker to be tripped again.

8. The electric operating mechanism of a reclosing circuit breaker of claim 6, characterized in that: the two driving mechanisms (600) are respectively a closing driving mechanism (610) and an opening driving mechanism (620), the crank mechanism (300) drives the control handle (200) to close when pushing the closing driving mechanism (610), and the crank mechanism (300) drives the opening driving mechanism (620) to open; the first eccentric shaft (321) and the second eccentric shaft (322) are respectively equal in distance to the rotation center of the turntable (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 driving mechanism (610) is greater than or equal to La, and the distance L2 between the two driving protrusions of the opening driving mechanism (620) is less than or equal to La.

9. The electric operating mechanism of a 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 matched with the driving bulge in a rolling manner.

10. The electric operating mechanism of a reclosing circuit breaker of claim 3, characterized in that: the two clutch mechanisms respectively comprise a driving part (1) and a driven part (2), the driving parts (1) of the two clutch mechanisms are respectively connected with the motor (140) and the manual operating rod (150), and the driven parts (2) of the two clutch mechanisms are respectively connected with the crank mechanism (300); when the motor (140) and the manual operating rod (150) rotate towards one side, the connected driving part (1) can be driven to push the corresponding driven part (2) to horizontally rotate, so that the driven part (2) drives the crank mechanism (300) to switch on and off the brake control handle (200), and meanwhile, the crank mechanism (300) drives the driven part (2) and the driving part (1) corresponding to the other one to be separated along the horizontal direction.