An electric operating device for a circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and in particular to an electric operating device for a circuit breaker, comprising a shell, wherein a plurality of circuit breakers are arranged inside the shell, each circuit breaker has a toggle block, a winding motor and a winding device are respectively installed at the left and right ends of the shell, a plurality of circuit breakers are located between the winding motor and the winding device, a cable is connected between the winding motor and the winding device, a toggle mechanism is fixed on the cable, the toggle mechanism comprises a first toggle plate and a second toggle plate, the winding motor can drive the cable to be wound, so that the cable drives the toggle mechanism to move to a position corresponding to each toggle block; a driving mechanism is also arranged inside the shell, the driving mechanism is used to drive the toggle mechanism to move forward and backward, thereby driving the first toggle plate to cooperate with the toggle block or the second toggle block to cooperate with the toggle block, the device can control the opening and closing of a plurality of circuit breakers at the same time, and reduce the installation cost.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an electric operating device for a circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. In order to facilitate the control of the circuit breaker, an electric operating mechanism is usually installed outside the circuit breaker. As an accessory of the circuit breaker, the electric operating mechanism is mainly used for remote automatic control of the closing / opening of the circuit breaker.

[0003] The electric operating mechanism in the prior art is usually only for one circuit breaker, so when multiple circuit breakers are used at the same time, the same number of electric operating mechanisms need to be set, which leads to high installation costs. In addition, since each circuit breaker needs to be operated and controlled separately, it is inconvenient to use. Summary of the invention

[0004] Based on this, it is necessary to provide an electric operating device for a circuit breaker to address the problem of high installation cost of the current electric operating mechanism.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A circuit breaker electric operation device comprises a housing, wherein a plurality of circuit breakers are arranged inside the housing, the plurality of circuit breakers are distributed in the left-right direction, each circuit breaker has a toggle block, the toggle block rotates in the front-back direction to control the closing or opening of the circuit breaker; a winding motor and a winding device are respectively installed at the left and right ends of the housing, a plurality of circuit breakers are located between the winding motor and the winding device, a cable is connected between the winding motor and the winding device, a toggle mechanism is fixed on the cable, the toggle mechanism comprises a first toggle plate and a second toggle plate, the first toggle plate and the second toggle plate are respectively located at the front and back sides of the toggle block, the first toggle plate cooperates with the toggle block to realize the circuit breaker opening, and the second toggle plate cooperates with the toggle block to realize the circuit breaker closing; the winding motor can drive the cable to be wound up, so that the cable drives the toggle mechanism to move to the position corresponding to each toggle block; a driving mechanism is also arranged inside the housing, the driving mechanism is used to drive the toggle mechanism to move forward and backward, thereby driving the first toggle plate to cooperate with the toggle block or the second toggle block to cooperate with the toggle block.

[0007] Furthermore, the winding device is a reel, and a torsion spring is provided on the reel. The torsion spring is connected to one end of the cable, and the torsion spring can keep the cable in a tightened state.

[0008] Furthermore, the toggle mechanism includes a toggle frame, the first toggle plate and the second toggle plate are slidably arranged on the toggle frame forward and backward, and a limiter is provided on the toggle frame, which can limit the sliding of the first toggle plate and the second toggle plate; an unlocking member is provided on the toggle frame, and the cable is fixedly connected to the unlocking member. When the cable is loose, the unlocking member slides backward, so that the limiter releases the limit on the first toggle plate and the second toggle plate.

[0009] Further, the limiting member includes a first wedge block and a second wedge block, the first wedge block is connected to the toggle frame via a first spring, the second wedge block is connected to the toggle frame via a second spring, a first limiting groove is provided on the first toggle plate, and a second limiting groove is provided on the second toggle plate, the first wedge block can slide along the first limiting groove, the second wedge block can slide along the second limiting groove, the first spring has a tendency to cause the first wedge block to disengage from the first limiting groove, and the second spring has a tendency to cause the second wedge block to disengage from the second limiting groove.

[0010] Furthermore, a first limit baffle and a second limit baffle are provided on the toggle frame, the first wedge block slides left and right along the first limit baffle, and the second wedge block slides left and right along the second limit baffle.

[0011] Furthermore, the unlocking member is connected to the toggle frame via a third spring, and the third spring has a tendency to make the unlocking member slide backward, and the unlocking member can slide forward and backward along the first toggle plate and the second toggle plate, and the unlocking member is an unlocking rod, and a first inclined block and a second inclined block are provided on the unlocking rod, and the inclined surface of the first inclined block slides with the inclined surface of the first wedge block, and the inclined surface of the second inclined block slides with the inclined surface of the second wedge block.

[0012] Furthermore, the driving mechanism includes a driving plate and a telescopic cylinder, the telescopic cylinder is arranged on the shell, and both ends of the driving plate are connected to the shell through a fourth spring. The telescopic cylinder can drive the driving plate to move forward, and then the driving plate drives the toggle frame to move forward. The fourth spring can pull the driving plate to move backward, and then the driving plate drives the toggle frame to move backward.

[0013] Furthermore, the driving plate includes a first telescopic plate and a second telescopic plate, and the first telescopic plate and the second telescopic plate can be moved away from each other, so that the length of the driving plate is adjustable.

[0014] Furthermore, the shell includes an intermediate shell and first shells located at both ends of the intermediate shell, the first shell is provided with a limit plate, and the intermediate shell can slide between the limit plate and the first shell, thereby making the first shell and the intermediate shell overlap in the left and right direction.

[0015] Furthermore, a cover plate is rotatably provided on the shell, and the cover plate includes a middle cover plate and a first cover plate located at both ends of the middle cover plate, the first cover plate is provided with a limit strip, and the middle cover plate is provided with a limit frame, the limit strip can slide along the limit frame, thereby making the first cover plate overlap with the middle cover plate in the left and right directions.

[0016] The beneficial effects of the present invention are:

[0017] The electric operating device of the circuit breaker provided by the present invention drives the cable to be reeled or unreeled by a reeling motor, so that the cable drives the toggle mechanism to move to the position corresponding to each toggle block; then the toggle mechanism is driven to move forward and backward by a driving mechanism, so as to drive the first toggle plate to cooperate with the toggle block to realize the opening of the circuit breaker, or drives the second toggle block to cooperate with the toggle block to realize the closing of the circuit breaker, so that the device can control the opening and closing of multiple circuit breakers at the same time, thereby reducing the installation cost.

[0018] Secondly, the housing and the cover are both retractable, so as to be able to adapt to different numbers of circuit breakers and achieve sealing inside the housing.

[0019] Third, when the cable becomes loose, the unlocking member slides backward and the limiting member releases the limit on the first toggle plate and the second toggle plate. At this time, even if the driving mechanism drives the toggle frame to move forward, since the first toggle plate and the second toggle plate can slide relative to the toggle frame, the first toggle plate and the second toggle plate cannot toggle the toggle block, thereby avoiding misoperation of the electric operating device of the circuit breaker and improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of an electric operating device for a circuit breaker provided in one embodiment of the present invention;

[0021] Figure 2 A front view of an electric operating device for a circuit breaker provided in one embodiment of the present invention;

[0022] Figure 3 for Figure 2 Middle AA section view;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 A top view of an electric operating device for a circuit breaker provided in one embodiment of the present invention;

[0025] Figure 6 for Figure 5 Middle CC section view;

[0026] Figure 7A side view of an electric operating device for a circuit breaker provided in one embodiment of the present invention;

[0027] Figure 8 for Figure 7 Middle DD section view;

[0028] Fig. 9 for Figure 8 Enlarged view of point E in the middle;

[0029] Fig.10 A schematic diagram of an electric operating device of a circuit breaker provided by an embodiment of the present invention in a retracted state;

[0030] Fig.11 for Fig.10 Side view of.

[0031] in:

[0032] 101, first housing; 1012, limit plate; 1013, first cover plate; 1014, limit strip; 102, intermediate housing; 1022, intermediate cover plate; 1023, limit frame; 200, circuit breaker; 201, toggle block; 301, winding motor; 302, cable; 303, winding device; 304, first telescopic plate; 305, second telescopic plate; 306, fourth spring; 307, driving inclined plane; 30 8. Driving inclined block; 309. Telescopic cylinder; 400. Toggle mechanism; 401. Toggle frame; 402. Second toggle plate; 403. First toggle plate; 404. Unlocking member; 405. First wedge block; 406. Second wedge block; 407. Third spring; 408. Second limiting baffle; 409. Second limiting groove; 410. Second inclined block; 411. First inclined block; 412. Second spring; 413. First spring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] like Figures 1 to 11As shown, an electric operating device for a circuit breaker provided by an embodiment of the present invention comprises a shell, a plurality of circuit breakers 200 are arranged inside the shell, the plurality of circuit breakers 200 are distributed in the left-right direction, each circuit breaker 200 has a toggle block 201, the toggle block 201 rotates in the front-back direction to control the closing or opening of the circuit breaker 200; a winding motor 301 and a winding device 303 are respectively installed at the left and right ends of the shell, a plurality of circuit breakers 200 are located between the winding motor 301 and the winding device 303, a cable 302 is connected between the winding motor 301 and the winding device 303, a toggle mechanism 400 is fixed on the cable 302, the toggle mechanism 400 comprises a first toggle plate 403 and a second toggle plate 402, the first toggle plate 403 and the second toggle plate 402 are respectively located at the front and back sides of the toggle block 201, the first toggle plate 403 is in front, and the second toggle plate 402 is in the back. The first toggle plate 403 cooperates with the toggle block 201 to open the circuit breaker 200, and the second toggle plate 402 cooperates with the toggle block 201 to close the circuit breaker 200; the winding motor 301 can drive the cable 302 to wind up, so that the cable 302 drives the toggle mechanism 400 to move to the position corresponding to each toggle block 201; the housing is also provided with a driving mechanism, which is used to drive the toggle mechanism 400 to move forward and backward, thereby driving the first toggle plate 403 to cooperate with the toggle block 201 or the second toggle block 201 to cooperate with the toggle block 201. Specifically, the first toggle plate 403 and the second toggle plate 402 are both L-shaped plates.

[0037] In one embodiment, the winding device 303 is a reel, and a torsion spring is provided on the reel. The torsion spring is connected to one end of the cable 302, and the torsion spring can keep the cable 302 in a tightened state.

[0038] In one embodiment, the toggle mechanism 400 includes a toggle frame 401, the first toggle plate 403 and the second toggle plate 402 are slidably arranged on the toggle frame 401, and a limit member is provided on the toggle frame 401, which can limit the sliding of the first toggle plate 403 and the second toggle plate 402; an unlocking member 404 is provided on the toggle frame 401, and the cable 302 is fixedly connected to the unlocking member 404. When the cable 302 is loose, the unlocking member 404 slides backward, so that the limit member releases the limit on the first toggle plate 403 and the second toggle plate 402.

[0039] In one embodiment, the limiting member includes a first wedge block 405 and a second wedge block 406, the first wedge block 405 is connected to the toggle frame 401 via a first spring 413, the second wedge block 406 is connected to the toggle frame 401 via a second spring 412, a first limiting groove is provided on the first toggle plate 403, and a second limiting groove 409 is provided on the second toggle plate 402, the first wedge block 405 can slide along the first limiting groove, and the second wedge block 406 can slide along the second limiting groove 409, the first spring 413 has a tendency to cause the first wedge block 405 to disengage from the first limiting groove, and the second spring 412 has a tendency to cause the second wedge block 406 to disengage from the second limiting groove 409.

[0040] In one embodiment, a first limit baffle and a second limit baffle 408 are provided on the toggle frame 401 , the first wedge block 405 slides left and right along the first limit baffle, and the second wedge block 406 slides left and right along the second limit baffle 408 .

[0041] In one embodiment, the unlocking member 404 is connected to the toggle frame 401 through a third spring 407. The third spring 407 has a tendency to make the unlocking member 404 slide backward. The unlocking member 404 can slide forward and backward along the first toggle plate 403 and the second toggle plate 402. The unlocking member 404 is an unlocking rod, and a first inclined block 411 and a second inclined block 410 are provided on the unlocking rod. The inclined surface of the first inclined block 411 is slidably matched with the inclined surface of the first wedge block 405, and the inclined surface of the second inclined block 410 is slidably matched with the inclined surface of the second wedge block 406. When the cable 302 is tightened, the tension of the cable 302 causes the unlocking member 404 to move forward to compress the third spring 407. When the cable 302 is relaxed, the third spring 407 is reset to drive the unlocking member 404 to move backward.

[0042] In one embodiment, the driving mechanism includes a driving plate and a telescopic cylinder 309, wherein the driving plate is fixedly connected to the toggle frame 401, and the telescopic cylinder 309 is disposed on the housing. Both ends of the driving plate are connected to the housing through a fourth spring 306, and the telescopic cylinder 309 can drive the driving plate to move forward, thereby causing the driving plate to drive the toggle frame 401 to move forward, and the fourth spring 306 can pull the driving plate to move backward, thereby causing the driving plate to drive the toggle frame 401 to move backward. In other embodiments, the telescopic cylinder 309 directly drives the driving plate to move forward and backward.

[0043] The output end of the telescopic cylinder 309 is provided with a driving inclined block 308, and the driving plate is provided with a driving inclined surface 307. The extension of the telescopic cylinder 309 drives the driving inclined block 308 to press and fit with the driving inclined surface 307, thereby realizing the forward movement of the driving plate.

[0044] Specifically, the driving inclined surface 307 is divided into three sections along the front-to-back direction (not shown in the figure), including a front section, a middle section and a rear section. In the initial state, the driving inclined block 308 is located in the middle section of the driving inclined surface 307, at which time the fourth spring 306 is in the first tension state, and the toggle block 201 is located between the first toggle plate 403 and the second toggle plate 402. When the telescopic cylinder 309 is controlled to contract, the driving inclined block 308 is located in the front section of the driving inclined surface 307, the fourth spring 306 returns to the initial state, the fourth spring 306 pulls the driving plate to move backward, the driving plate drives the toggle frame 401 to move backward, and drives the first toggle plate 403 to toggle the toggle block 201 backward, so that the circuit breaker 200 is opened. When the telescopic cylinder 309 is controlled to extend, the driving bevel block 308 is located at the rear section of the driving bevel 307, the driving bevel block 308 drives the driving plate to move forward, the fourth spring 306 is in the second tension state, the driving plate drives the toggle frame 401 to move forward, and drives the second toggle plate 402 to toggle the toggle block 201 forward, so that the circuit breaker 200 is closed.

[0045] In one embodiment, the driving plate includes a first telescopic plate 304 and a second telescopic plate 305, and the first telescopic plate 304 and the second telescopic plate 305 can be moved away from each other, so that the length of the driving plate is adjustable. Specifically, the first telescopic plate 304 and the second telescopic plate 305 are both provided with one-way teeth, so that the first telescopic plate 304 and the second telescopic plate 305 can only be moved away from each other.

[0046] In one embodiment, the housing includes an intermediate housing 102 and a first housing 101 located at both ends of the intermediate housing 102, and a limit plate 1012 is provided on the front and rear sides of the first housing 101, and the intermediate housing 102 can slide between the limit plate 1012 and the side of the first housing 101, so that the first housing 101 and the intermediate housing 102 overlap in the left and right directions. In this way, the length of the housing can be adjusted to adapt to different numbers of circuit breakers 200. The bottoms of the first housing 101 and the intermediate housing 102 are both provided with a fixing plate, and the fixing plate is provided with a mounting hole, and the housing is fixed to the corresponding position of the wall through the mounting hole. Specifically, the winding motor 301 is fixedly arranged on the first housing 101 on the left, and the reel is fixedly arranged on the first housing 101 on the right. When the two first housings 101 are close to each other, the cable 302 is wound by controlling the winding motor 301 to keep the cable 302 in a tightened state.

[0047] In one embodiment, a cover plate is rotatably provided on the shell, and the cover plate includes an intermediate cover plate 1022 and first cover plates 1013 located at both ends of the intermediate cover plate 1022, and a limiting strip 1014 is provided on the first cover plate 1013, and a limiting frame 1023 is provided on the intermediate cover plate 1022, and the limiting strip 1014 can slide along the limiting frame 1023, thereby making the first cover plate 1013 overlap with the intermediate cover plate 1022 in the left and right direction. In this way, the length of the cover plate is consistent with the length of the shell, thereby ensuring the sealing effect inside the shell.

[0048] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0049] In the initial state, if Fig.10 As shown, the two first housings 101 and the two first cover plates 1013 are close to each other, and the length of the housing is the shortest. Then, according to the number of circuit breakers 200, the two first housings 101 are controlled to move away from each other, so that the length of the housings adapts to the length of the multiple circuit breakers 200, and then the two first cover plates 1013 are driven to move away from each other, so that the length of the cover plates is consistent with the length of the housing, and the housing and the cover plates can seal the multiple circuit breakers 200 inside to ensure the sealing effect. At the same time, the first telescopic plate 304 and the second telescopic plate 305 are moved away from each other, so that the length of the drive plate is consistent with the length of the multiple circuit breakers 200, and then the winding motor 301 is controlled to keep the cable 302 in a normal tightening state at all times, and the telescopic cylinder 309 is controlled to extend to drive the driving inclined block 308 to be located in the middle section of the driving inclined surface 307, and at this time, the fourth spring 306 is in the first tension state.

[0050] When a circuit breaker 200 needs to be closed, the winding motor 301 is controlled to wind up or loosen the cable 302 to a set length. Since the winding device 303 is provided with a torsion spring, the cable 302 can be kept in a tightened state. The cable 302 drives the toggle mechanism 400 to move to the position corresponding to the circuit breaker 200 that needs to be closed, and then the telescopic cylinder 309 is controlled to extend, so that the telescopic cylinder 309 pushes the drive plate forward, and the drive plate pushes the toggle frame 401 forward, so that the second toggle plate 402 on the toggle frame 401 toggle the toggle block 201 to rotate forward, and the circuit breaker 200 can be closed. At this time, the fourth spring 306 changes from the first stretched state to the second stretched state. After the closing is completed, the telescopic cylinder 309 is controlled to reset. Under the reset force of the fourth spring 306, the driving plate moves backward to drive the toggle frame 401 to reset backward, so that the toggle block 201 is located between the first toggle plate 403 and the second toggle plate 402, and the fourth spring 306 returns to the first stretched state.

[0051] When it is necessary to open another circuit breaker 200, the winding motor 301 is controlled to wind or loosen the cable 302 to a set length, so that the toggle mechanism 400 moves to the position corresponding to the other circuit breaker 200, and then the telescopic cylinder 309 is controlled to contract, and the fourth spring 306 contracts from the first stretched state to the natural state, driving the drive plate to move backward, and the drive plate pushes the toggle frame 401 to move backward, so that the first toggle plate 403 on the toggle frame 401 toggle the toggle block 201 to rotate backward, and the circuit breaker 200 can be opened. Therefore, the electric operating device of the circuit breaker 200 of the present application can control the opening and closing of multiple circuit breakers 200, reducing the installation cost.

[0052] When the cable 302 is loose, it means that the electric operating device of the circuit breaker cannot be used normally. At this time, the loose cable 302 will cause the unlocking piece 404 to slide backward under the action of the third spring 407. The unlocking piece 404 slides backward, thereby causing the first inclined block 411 and the first wedge block 405 to slide relative to each other, and the second inclined block 410 and the second wedge block 406 to slide relative to each other, so that the first wedge block 405 slides along the first limiting baffle plate and then disengages from the first limiting groove, and the second wedge block 406 slides along the second limiting baffle plate 408 and then disengages from the second limiting groove 409, so that the first toggle plate 403 and the second toggle plate 402 can slide along the toggle frame 401. At this time, even if the toggle frame 401 moves forward and backward, since the first toggle plate 403 and the second toggle plate 402 can slide relative to the toggle frame 401, the first toggle plate 403 and the second toggle plate 402 cannot toggle the toggle block 201, thereby avoiding misoperation of the electric operating device of the circuit breaker and improving safety performance.

[0053] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An electric operating device for a circuit breaker, characterized in that: It comprises a housing, wherein a plurality of circuit breakers are arranged inside the housing, the plurality of circuit breakers are distributed in the left-right direction, each circuit breaker has a toggle block, and the toggle block rotates in the front-back direction to control the closing or opening of the circuit breaker; A winding motor and a winding device are respectively installed at the left and right ends of the shell, and multiple circuit breakers are located between the winding motor and the winding device. A cable is connected between the winding motor and the winding device, and a toggle mechanism is fixed on the cable. The toggle mechanism includes a first toggle plate and a second toggle plate, and the first toggle plate and the second toggle plate are respectively located at the front and rear sides of the toggle block. The first toggle plate cooperates with the toggle block to realize the circuit breaker opening, and the second toggle plate cooperates with the toggle block to realize the circuit breaker closing; the winding motor can drive the cable to be wound, so that the cable drives the toggle mechanism The housing is further provided with a driving mechanism, the driving mechanism being used to drive the toggle mechanism to move forward and backward, thereby driving the first toggle plate to cooperate with the toggle block or the second toggle block to cooperate with the toggle block, the toggle mechanism comprising a toggle frame, the first toggle plate and the second toggle plate being slidably arranged on the toggle frame, the toggle frame being provided with a limiter, the limiter being able to limit the sliding of the first toggle plate and the second toggle plate; the toggle frame being provided with an unlocking member, the cable being fixedly connected to the unlocking member, and when the cable is loose, the unlocking member slides backward to allow the limiter to slide backward The positioning member releases the limiting of the first toggle plate and the second toggle plate, and the limiting member includes a first wedge block and a second wedge block, the first wedge block is connected to the toggle frame through a first spring, and the second wedge block is connected to the toggle frame through a second spring, a first limiting groove is provided on the first toggle plate, and a second limiting groove is provided on the second toggle plate, the first wedge block can slide along the first limiting groove, and the second wedge block can slide along the second limiting groove, the first spring has a tendency to disengage the first wedge block from the first limiting groove, and the second spring has a tendency to disengage the second wedge block from the second limiting groove The toggle frame is provided with a first limit baffle and a second limit baffle, the first wedge block slides left and right along the first limit baffle, and the second wedge block slides left and right along the second limit baffle, the unlocking piece is connected to the toggle frame through a third spring, and the third spring has a tendency to make the unlocking piece slide backward, and the unlocking piece can slide back and forth along the first toggle plate and the second toggle plate, the unlocking piece is an unlocking rod, and the unlocking rod is provided with a first inclined block and a second inclined block, the inclined surface of the first inclined block slides with the inclined surface of the first wedge block, and the inclined surface of the second inclined block slides with the inclined surface of the second wedge block.

2. The electric operating device for circuit breaker according to claim 1, characterized in that: The winding device is a reel, and a torsion spring is provided on the reel. The torsion spring is connected to one end of the cable, and the torsion spring can keep the cable in a tightened state.

3. The electric operating device for circuit breaker according to claim 1, characterized in that: The driving mechanism includes a driving plate and a telescopic cylinder, wherein the telescopic cylinder is arranged on the shell, and both ends of the driving plate are connected to the shell through a fourth spring. The telescopic cylinder can drive the driving plate to move forward, and then the driving plate drives the toggle frame to move forward. The fourth spring can pull the driving plate to move backward, and then the driving plate drives the toggle frame to move backward.

4. The electric operating device for circuit breaker according to claim 3, characterized in that: The driving plate comprises a first telescopic plate and a second telescopic plate, and the first telescopic plate and the second telescopic plate can be moved away from each other, so that the length of the driving plate is adjustable.

5. The electric operating device for circuit breaker according to claim 1, characterized in that: The shell includes an intermediate shell and first shells located at two ends of the intermediate shell. The first shell is provided with a limit plate. The intermediate shell can slide between the limit plate and the first shell, so that the first shell and the intermediate shell overlap in the left-right direction.

6. The electric operating device for circuit breaker according to claim 5, characterized in that: A cover plate is rotatably provided on the shell, and the cover plate includes a middle cover plate and first cover plates located at both ends of the middle cover plate, a limit strip is provided on the first cover plate, and a limit frame is provided on the middle cover plate, and the limit strip can slide along the limit frame, thereby making the first cover plate overlap with the middle cover plate in the left and right directions.

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