CN212062349U - Electric operating mechanism of circuit breaker - Google Patents

Abstract

The utility model relates to a circuit breaker auxiliary device, circuit breaker electric operating mechanism specifically says so. The box comprises a box body, wherein a controller and an electric driving mechanism are arranged in the box body, and the electric driving mechanism is electrically connected with the controller. It is characterized in that the front surface of the box body is provided with a pit, and a sliding plate is arranged in the pit. The bottom of the pit is provided with a longitudinal through groove, a pressing piece is arranged in the box body corresponding to the longitudinal through groove, one end of the pressing piece is provided with a bending part, the bending part penetrates through the longitudinal through groove to be connected with the sliding plate, and the bending part is matched with the longitudinal through groove in a sliding manner. Keep away from the box body that kink pressing blade one end corresponds and have first micro-gap switch, first micro-gap switch with be the electricity between the controller and be connected, the pressing blade corresponds with first micro-gap switch's shell fragment position for when the slide drove the pressing blade and slides to one side that is close to first micro-gap switch, the pressing blade offseted with first micro-gap switch's shell fragment, and the controller stop work. The electric operating mechanism can avoid potential safety hazards.

Description

Electric operating mechanism of circuit breaker

Technical Field

The utility model relates to a circuit breaker auxiliary device, the circuit breaker electric operating mechanism who is used for remote control circuit breaker divide-shut brake specifically says so.

Background

With the proposal and development of the ubiquitous power internet of things concept, the requirements of intellectualization and remote control on the circuit breaker in the low-voltage power distribution network are increasingly highlighted. The circuit breaker undertakes the important effect of switch-on and protection consumer in low pressure distribution network, and conventional circuit breaker does not possess the remote control function, can not satisfy the requirement of ubiquitous electric power thing networking, need can solve through installing electric operating mechanism additional.

At present, a circuit breaker electric operating mechanism used in the power industry comprises a box body, and a controller and an electric driving mechanism are arranged in the box body. When the intelligent controller is used, the electric driving mechanism is connected with a handle of the molded case circuit breaker, and the controller is connected with the Internet of things control terminal. The on-off requirement is sent to the controller through the control terminal of the Internet of things, and the controller controls the electric driving mechanism to drive the molded case circuit breaker to realize automatic on-off, so that a remote control function is realized. However, when the molded case circuit breaker adopting the electric operating mechanism is used for equipment maintenance during opening, misoperation can occur, and the condition of electric closing occurs, so that potential safety hazards exist for workers who perform equipment maintenance.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a circuit breaker electric operating mechanism, this electric operating mechanism can avoid the potential safety hazard.

In order to solve the problems, the following technical scheme is provided:

the utility model discloses a circuit breaker electric operating mechanism includes the box body, has controller and electric drive mechanism in the box body, is the electricity between electric drive mechanism and controller and is connected. The front surface of the box body is provided with a strip-shaped pit, a sliding plate is arranged in the pit, and the sliding plate and the pit are matched in a longitudinal sliding mode along the pit. The bottom of the pit is provided with a longitudinal through groove, a pressing piece is arranged in the box body corresponding to the longitudinal through groove, one end of the pressing piece is provided with a bending part, the bending part penetrates through the longitudinal through groove to be connected with the sliding plate, and the bending part is matched with the longitudinal through groove in a sliding manner. Keep away from the box body that kink pressing blade one end corresponds and have first micro-gap switch, first micro-gap switch with be the electricity between the controller and be connected, the pressing blade corresponds with first micro-gap switch's shell fragment position for when the slide drove the pressing blade and slides to one side that is close to first micro-gap switch, the pressing blade offseted with first micro-gap switch's shell fragment, and the controller stop work.

And one end of the sliding plate corresponding to one end of the pit and the corresponding end of the pit is provided with lead seal seats protruding outwards, and the relative positions of the two lead seal seats are provided with lead seal holes.

A supporting plate is arranged in the box body, and the surface of the supporting plate is parallel to the front surface of the box body. The back of the box body is open.

The electric driving mechanism comprises a rotating shaft, a second microswitch, a third microswitch and a motor, and the second microswitch, the third microswitch and the motor are electrically connected with the controller. The rotating shaft and the motor are both positioned on the supporting plate, two sides of the rotating shaft respectively extend out of two sides of the supporting plate, the rotating shaft is in rotating fit with the supporting plate, an output gear is arranged on the rotating shaft, and an output shaft of the motor is in linkage fit with the output gear. The sector is concentrically fixed on the section of the rotating shaft between the back faces of the supporting plate and the box body, the sector is parallel to the supporting plate, a guide rod is arranged between the sector and the back face of the box body, a sliding block is arranged on the guide rod, an eccentric pin is fixed on one side of the sector close to the sliding block, the eccentric pin is perpendicular to the sector, a bidirectional bearing is arranged on the eccentric pin, a first through groove is formed in the side face of the sliding block corresponding to the bidirectional bearing, the first through groove is perpendicular to the guide rod, and the bidirectional bearing is located in the first through groove. The second micro-gap switch is in same vertical plane with the fan-shaped piece, and the shell fragment of second micro-gap switch arrives the distance of pivot equals with the radius of fan-shaped piece, third micro-gap switch is in same vertical plane with the slider, and the shell fragment of third micro-gap switch equals with the distance of the lateral wall of slider to the pivot to the distance of pivot, when the pivot passes through the fan-shaped piece and drives the slider and slide to the one side of keeping away from third micro-gap switch, the slider leaves third micro-gap switch's shell fragment, and the fan-shaped piece offsets with second micro-gap switch's shell fragment, when the pivot passes through the fan-shaped piece and drives the slider and slide to the one side of being close to third micro-gap switch, and the fan-shaped piece leaves second micro-gap switch's shell fragment, and the slider.

The output gear is located between the supporting plate and the front face of the box body, a driving gear is fixed on an output shaft of the motor and is connected with the output gear through a reduction gear set, and therefore the output shaft of the motor is in linkage fit with the output gear.

The output gear passes through one-way bearing and links to each other with the pivot, the pivot with the pit position is relative, and has the hole of stepping down on the pit bottom, and the one end of pivot is located the hole of stepping down, and is the cooperation of rotation form between the two, has the rotation groove on the terminal surface of this end of pivot, works as when the slide drives the shell fragment counterbalance of holding down piece and first micro-gap switch, the slide with step down and be the dislocation between the hole.

The further improvement scheme of the utility model is that the supporting plate is provided with a top rod which is vertical to the supporting plate, two ends of the top rod respectively extend out from two sides of the supporting plate, and the top rod is matched with the supporting plate in a longitudinal sliding way along the top rod; a limiting disc is concentrically fixed at one end of the ejector rod close to the front surface of the box body, a spring seat is arranged on the ejector rod between the limiting disc and the supporting plate, and a return spring is sleeved on the ejector rod between the spring seat and the supporting plate. The front side of the box body is provided with a lock hole, a mechanical lock is fixed in the lock hole, a rotary lock cylinder of the mechanical lock is positioned between a support plate and the front side of the box body, a rotary sleeve is concentrically fixed on the rotary lock cylinder of the mechanical lock, the rotary sleeve is vertical to the support plate, an outer boss is arranged on the outer side wall of the rotary sleeve, the table surface of the outer boss close to the front side of the box body is spiral, a poking rod is arranged between the ejector rod and the rotary sleeve, the middle part of the poking rod is hinged on the support plate, one end of the poking rod is clamped between the limiting disc and the spring seat, and the other end of the; the outer side wall of the rotary sleeve is provided with a radial protrusion extending outwards, a fourth micro switch is arranged in the box body on one side of the rotary sleeve and is electrically connected with the controller, when the poke rod is located at a high point of the outer boss helicoid, the protrusion is abutted against the elastic sheet of the fourth micro switch, the controller stops working, when the poke rod is located at a low point of the outer boss helicoid, the protrusion leaves the elastic sheet of the fourth micro switch, and the controller recovers to work. The improved circuit breaker has the advantage that when the mechanical lock is used for ensuring maintenance, irrelevant personnel cannot manually close the circuit breaker, so that the personal safety of workers is further ensured.

And a pushing handle is arranged on the outer side surface of the sliding plate.

By adopting the scheme, the method has the following advantages:

because the utility model discloses a there is the pit of rectangular shape in the front of circuit breaker electric operating mechanism's box body, has the slide in the pit, has vertical logical groove on the pit end of pit, has the compressing sheet in the box body that vertical logical groove corresponds, and the one end of compressing tightly piece has the kink, and the kink passes vertical logical groove and links to each other with the slide, and the kink and the vertical sliding form cooperation that leads to between the groove have a micro-gap switch in keeping away from the box body that kink compressing tightly piece one end corresponds, and the compressing tightly piece corresponds with a micro-gap switch's shell fragment position. When the intelligent controller is used, the electric driving mechanism is connected with a handle of the molded case circuit breaker, and the controller is connected with the Internet of things control terminal. When the separating brake carries out equipment maintenance, drive the pressing blade through the slide to the one side that is close to first micro-gap switch and slide, the pressing blade offsets with first micro-gap switch's shell fragment, controller stop work, even internet control terminal sends the combined floodgate requirement to the controller, the controller also can not control electric drive mechanism and realize the action of closing a floodgate to guarantee that the circuit breaker can not appear the problem of combined floodgate because of long-range maloperation, avoided the staff potential safety hazard when overhauing equipment.

Drawings

Fig. 1 is a schematic structural view of an electric operating mechanism of the circuit breaker of the present invention;

fig. 2 is a schematic structural view of the electric operating mechanism of the circuit breaker after the sliding plate is hidden;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic structural diagram of the electric operating mechanism of the circuit breaker after the slide plate and the box body are hidden;

fig. 5 is a schematic perspective view of the electric operating mechanism of the circuit breaker in the rear view direction.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in FIGS. 1-5, the electric operating mechanism of the circuit breaker of the present invention comprises a box body 1, a controller 26 and an electric driving mechanism are arranged in the box body 1, and the electric driving mechanism is electrically connected with the controller 26. The front of the box body 1 is provided with a strip-shaped pit 2, a sliding plate 5 is arranged in the pit 2, and the sliding plate 5 is matched with the pit 2 in a longitudinal sliding manner along the pit 2. The bottom of the pit 2 is provided with a longitudinal through groove 7, a compression piece 9 is arranged in the box body 1 corresponding to the longitudinal through groove 7, one end of the compression piece 9 is provided with a bending part 10, the bending part 10 penetrates through the longitudinal through groove 7 to be connected with the sliding plate 5, and the bending part 10 is matched with the longitudinal through groove 7 in a sliding manner. Keep away from and have first micro-gap switch 19 in the box body 1 that kink 10 pressing blade 9 one end corresponds, first micro-gap switch 19 with be the electricity between controller 26 and be connected, pressing blade 9 corresponds with first micro-gap switch 19's shell fragment position for when slide 5 drove pressing blade 9 and slided to one side that is close to first micro-gap switch 19, pressing blade 9 offsets with first micro-gap switch 19's shell fragment, and controller 26 stop work. And one end of the pit 2 and one end of the sliding plate 5 corresponding to the end of the pit 2 are provided with lead seal seats 4 protruding outwards, and the relative positions of the two lead seal seats 4 are provided with lead seal holes 8. And a pushing handle 6 is arranged on the outer side surface of the sliding plate 5.

A supporting plate 13 is arranged in the box body 1, and the surface of the supporting plate 13 is parallel to the front surface of the box body 1. The back surface of the box body 1 is open. The electric driving mechanism comprises a rotating shaft 11, a second microswitch 27, a third microswitch 32 and a motor 24, and the second microswitch 27, the third microswitch 32 and the motor 24 are electrically connected with the controller 26. The rotating shaft 11 and the motor 24 are both located on the supporting plate 13, two sides of the rotating shaft 11 respectively extend out of two sides of the supporting plate 13, the rotating shaft 11 is in rotating fit with the supporting plate 13, the rotating shaft 11 is provided with the output gear 22, the output gear 22 is located between the supporting plate 13 and the front face of the box body 1, the output shaft of the motor 24 is fixedly provided with the driving gear 23, and the driving gear 23 is connected with the output gear 22 through the reduction gear set 25, so that the output shaft of the motor 24 is in linkage fit with the output gear 22. The sector 33 is concentrically fixed on the section of the rotating shaft 11 between the supporting plate 13 and the back of the box body 1, the sector 33 is parallel to the supporting plate 13, a guide rod 28 is arranged between the sector 33 and the back of the box body 1, a sliding block 29 is arranged on the guide rod 28, an eccentric pin is fixed on one side of the sector 33 close to the sliding block 29 and is perpendicular to the sector 33, a bidirectional bearing 30 is arranged on the eccentric pin, a first through groove 31 is arranged on the side face of the sliding block 29 corresponding to the bidirectional bearing 30, the first through groove 31 is perpendicular to the guide rod 28, and the bidirectional bearing 30 is positioned in the first through groove 31. The second micro-switch 27 and the fan-shaped piece 33 are in the same vertical plane, the distance from the elastic piece of the second micro-switch 27 to the rotating shaft 11 is equal to the radius of the fan-shaped piece 33, the third micro-switch 32 and the sliding block 29 are in the same vertical plane, the distance from the elastic piece of the third micro-switch 32 to the rotating shaft 11 is equal to the distance from the side wall of the sliding block 29 to the rotating shaft 11, when the rotating shaft 11 drives the sliding block 29 to slide towards one side far away from the third micro-switch 32 through the fan-shaped piece 33, the sliding block 29 leaves the elastic piece of the third micro-switch 32, the fan-shaped piece 33 is abutted against the elastic piece of the second micro-switch 27, when the rotating shaft 11 drives the sliding block 29 to slide towards one side near the third micro-switch 32 through the fan-shaped piece 33, the fan-shaped piece 33 leaves the elastic piece of the second micro-switch 27. In order to facilitate manual rotation of the rotating shaft 11, the output gear 22 is connected with the rotating shaft 11 through a one-way bearing, the rotating shaft 11 is opposite to the position of the pit 2, a yielding hole is formed in the bottom of the pit 2, one end of the rotating shaft 11 is located in the yielding hole, the rotating shaft and the yielding hole are in rotating fit, a rotating groove 12 is formed in the end face of the end of the rotating shaft 11, and when the sliding plate 5 drives the pressing piece 9 to abut against the elastic piece of the first microswitch 19, the sliding plate 5 is arranged between the yielding holes in a staggered mode.

The supporting plate 13 is provided with a top rod 15, the top rod 15 is perpendicular to the supporting plate 13, two ends of the top rod 15 respectively extend out of two sides of the supporting plate 13, and the top rod 15 is matched with the supporting plate 13 in a sliding manner along the longitudinal direction of the top rod 15. A limiting disc 35 is concentrically fixed at one end of the ejector rod 15 close to the front surface of the box body 1, a spring seat 17 is arranged on the ejector rod 15 between the limiting disc 35 and the supporting plate 13, and a return spring 16 is sleeved on the ejector rod 15 between the spring seat 17 and the supporting plate 13. The front of box body 1 is equipped with the lockhole, and the lockhole internal fixation has mechanical lock 3, and the rotatory lock core of mechanical lock 3 is located backup pad 13 and box body 1 openly between, and is fixed with swivel sleeve 34 on the rotatory lock core of mechanical lock 3 with one heart, and swivel sleeve 34 is perpendicular with backup pad 13, has outer boss 18 on the lateral wall of swivel sleeve 34, and the outer boss 18 mesa that is close to box body 1 openly is the heliciform, there is poker rod 14 between ejector pin 15 and swivel sleeve 34, and the middle part of poker rod 14 articulates in backup pad 13, and the one end card of poker rod 14 is in between spacing dish 35 and spring holder 17, the other end of poker rod 14 offsets with the helicoid of outer boss 18. There is radial protruding 21 that outwards stretches out on the lateral wall of swivel mount 34, has fourth micro-gap switch 20 in the box body 1 of swivel mount 34 one side, and fourth micro-gap switch 20 is the electricity with controller 26 and is connected, works as when poker rod 14 is located the high point of outer boss 18 helicoid, protruding and fourth micro-gap switch 20's shell fragment offsets, and controller 26 stop work, when poker rod 14 is located the low point of outer boss 18 helicoid, the protruding shell fragment that leaves fourth micro-gap switch 20, and controller 26 resumes work.

During the use, will the utility model discloses a circuit breaker electric operating mechanism installs on the circuit breaker, makes the 1 back of box body openly towards the circuit breaker, makes the handle of circuit breaker be located first logical groove 31, makes ejector pin 15 offset with the tripping button of circuit breaker, links to each other controller 26 and thing networked control terminal.

When remote control closes, thing networking control terminal sends the instruction of closing to controller 26, controller 26 control motor 24 rotates, motor 24 passes through driving gear 23, reduction gear set 25 and output gear 22 drive pivot 11 and fan piece 33 rotate, fan piece 33 passes through two-way bearing 30 and drives slider 29 and slide to the one side of keeping away from third micro-gap switch 32, slider 29 leaves the shell fragment of third micro-gap switch 32, slider 29 drives the handle of circuit breaker and reachs the position of closing the floodgate, the circuit breaker closes the floodgate, fan piece 33 offsets with second micro-gap switch 27's shell fragment, at this moment, controller 26 can accept the signal of opening the floodgate.

During remote control separating brake, thing networking control terminal sends the separating brake instruction to controller 26, controller 26 control motor 24 reversal, motor 24 passes through driving gear 23, reduction gear set 25 and output gear 22 drive pivot 11 and the reversal of fan-shaped piece 33, fan-shaped piece 33 drives slider 29 through two-way bearing 30 and slides to the one side that is close to third micro-gap switch 32, slider 29 drives the handle of circuit breaker and reachs the position of separating brake, the circuit breaker separating brake, fan-shaped piece 33 leaves the shell fragment of second micro-gap switch 27, slider 29 offsets with the shell fragment of third micro-gap switch 32, at this moment, the acceptable closing signal of controller 26.

When the separating brake carries out the plant maintenance, drive pressing blade 9 through slide 5 and slide to the one side that is close to first micro-gap switch 19, pressing blade 9 offsets with first micro-gap switch 19's shell fragment, controller 26 stop work, even internet control terminal sends the requirement of closing a floodgate to controller 26, controller 26 also can not control electric drive mechanism and realize the action of closing a floodgate, thereby guarantee that the circuit breaker can not appear the problem of closing a floodgate because of long-range maloperation, avoided the staff potential safety hazard when overhauing equipment to appear.

Claims (8)

1. An electric operating mechanism of a circuit breaker comprises a box body (1), wherein a controller (26) and an electric driving mechanism are arranged in the box body (1), and the electric driving mechanism is electrically connected with the controller (26); the portable box is characterized in that the front surface of the box body (1) is provided with a strip-shaped pit (2), a sliding plate (5) is arranged in the pit (2), and the sliding plate (5) is matched with the pit (2) in a longitudinal sliding manner along the pit (2); a longitudinal through groove (7) is formed in the bottom of the pit (2), a compression piece (9) is arranged in the box body (1) corresponding to the longitudinal through groove (7), a bent part (10) is arranged at one end of the compression piece (9), the bent part (10) penetrates through the longitudinal through groove (7) to be connected with the sliding plate (5), and the bent part (10) is in sliding fit with the longitudinal through groove (7); keep away from in box body (1) that kink (10) pressing blade (9) one end corresponds and have first micro-gap switch (19), first micro-gap switch (19) with be the electricity between controller (26) and be connected, pressing blade (9) correspond with first micro-gap switch's (19) shell fragment position for when slide (5) drive pressing blade (9) slided to the one side that is close to first micro-gap switch (19), pressing blade (9) offset with the shell fragment of first micro-gap switch (19), and controller (26) stop work.

2. An electric operating mechanism of a circuit breaker as claimed in claim 1, characterized in that one end of the pit (2) and one end of the sliding plate (5) corresponding to the end of the pit (2) are provided with lead sealing seats (4) protruding outwards, and the lead sealing seats (8) are provided at the opposite positions of the two lead sealing seats (4).

3. The electric operating mechanism of the circuit breaker according to claim 1, characterized in that a support plate (13) is provided in the case (1), and the plate surface of the support plate (13) is parallel to the front surface of the case (1); the back surface of the box body (1) is open.

4. The circuit breaker electric operating mechanism according to claim 3, characterized in that the electric driving mechanism comprises a rotating shaft (11), a second microswitch (27), a third microswitch (32) and a motor (24), the second microswitch (27), the third microswitch (32) and the motor (24) are all electrically connected with the controller (26); the rotating shaft (11) and the motor (24) are both positioned on the supporting plate (13), two sides of the rotating shaft (11) respectively extend out of two sides of the supporting plate (13), the rotating shaft (11) is in rotating fit with the supporting plate (13), an output gear (22) is arranged on the rotating shaft (11), and an output shaft of the motor (24) is in linkage fit with the output gear (22); a sector piece (33) is concentrically fixed on the section of the rotating shaft (11) between the supporting plate (13) and the back of the box body (1), the sector piece (33) is parallel to the supporting plate (13), a guide rod (28) is arranged between the sector piece (33) and the back of the box body (1), a sliding block (29) is arranged on the guide rod (28), an eccentric pin is fixed on one side of the sector piece (33) close to the sliding block (29), the eccentric pin is perpendicular to the sector piece (33), a bidirectional bearing (30) is arranged on the eccentric pin, a first through groove (31) is formed in the side face of the sliding block (29) corresponding to the bidirectional bearing (30), the first through groove (31) is perpendicular to the guide rod (28), and the bidirectional bearing (30) is positioned in the first through groove (31); the second microswitch (27) and the fan-shaped piece (33) are in the same vertical plane, the distance from the elastic piece of the second microswitch (27) to the rotating shaft (11) is equal to the radius of the fan-shaped piece (33), the third microswitch (32) and the sliding block (29) are in the same vertical plane, the distance from the elastic piece of the third microswitch (32) to the rotating shaft (11) is equal to the distance from the side wall of the sliding block (29) to the rotating shaft (11), when the rotating shaft (11) drives the sliding block (29) to slide towards one side far away from the third microswitch (32) through the fan-shaped piece (33), the sliding block (29) leaves the elastic piece of the third microswitch (32), the fan-shaped piece (33) is abutted against the elastic piece of the second microswitch (27), when the rotating shaft (11) drives the sliding block (29) to slide towards one side close to the third microswitch (32) through the fan-shaped piece (33), the fan-shaped piece (33) leaves the elastic piece of the second microswitch (27), the sliding block (29) is pressed against the elastic sheet of the third microswitch (32).

5. The electric operating mechanism of circuit breaker according to claim 4, characterized in that the output gear (22) is located between the support plate (13) and the front of the box body (1), the output shaft of the motor (24) is fixed with a driving gear (23), the driving gear (23) is connected with the output gear (22) through a reduction gear set (25), so that the output shaft of the motor (24) is in linkage fit with the output gear (22).

6. The electric operating mechanism of the circuit breaker according to claim 5, characterized in that the output gear (22) is connected with the rotating shaft (11) through a one-way bearing, the rotating shaft (11) is opposite to the pit (2), and the pit bottom of the pit (2) is provided with a yielding hole, one end of the rotating shaft (11) is positioned in the yielding hole, and the rotating shaft and the pit are in rotating fit, the end surface of the end of the rotating shaft (11) is provided with a rotating groove (12), when the sliding plate (5) drives the pressing piece (9) to abut against the elastic piece of the first microswitch (19), the sliding plate (5) and the yielding hole are in dislocation arrangement.

7. The electric operating mechanism of the circuit breaker according to claim 3, characterized in that the supporting plate (13) is provided with a push rod (15), the push rod (15) is perpendicular to the supporting plate (13), two ends of the push rod (15) respectively extend from two sides of the supporting plate (13), and the push rod (15) is in sliding fit with the supporting plate (13) along the longitudinal direction of the push rod (15); a limiting disc (35) is concentrically fixed at one end of the ejector rod (15) close to the front surface of the box body (1), a spring seat (17) is arranged on the ejector rod (15) between the limiting disc (35) and the support plate (13), and a return spring (16) is sleeved on the ejector rod (15) between the spring seat (17) and the support plate (13); the front side of the box body (1) is provided with a lock hole, a mechanical lock (3) is fixed in the lock hole, a rotary lock cylinder of the mechanical lock (3) is positioned between a support plate (13) and the front side of the box body (1), a rotary sleeve (34) is concentrically fixed on the rotary lock cylinder of the mechanical lock (3), the rotary sleeve (34) is perpendicular to the support plate (13), the outer side wall of the rotary sleeve (34) is provided with an outer boss (18), the table surface of the outer boss (18) close to the front side of the box body (1) is spiral, a poking rod (14) is arranged between the ejector rod (15) and the rotary sleeve (34), the middle part of the poking rod (14) is hinged to the support plate (13), one end of the poking rod (14) is clamped between the limiting disc (35) and a spring seat (17), and the other end of the poking rod (14) is abutted to; have radial protruding (21) that outwards stretches out on swivel sleeve (34) lateral wall, have fourth micro-gap switch (20) in box body (1) of swivel sleeve (34) one side, fourth micro-gap switch (20) are the electricity with controller (26) and are connected, work as poker rod (14) are located the high point of outer boss (18) helicoid, and the arch offsets with the shell fragment of fourth micro-gap switch (20), and controller (26) stop work, and when poker rod (14) are located the low point of outer boss (18) helicoid, the arch leaves the shell fragment of fourth micro-gap switch (20), and controller (26) resume work.

8. An electric operating mechanism for a circuit breaker according to any one of claims 1 to 7 wherein the outer side of the slide (5) is provided with a push handle (6).

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