CN1028934C - Electric operating device for circuit breaker - Google Patents

Abstract

An electric operating device for a circuit breaker is constructed so that the slider is detached from the cam and linked with the handle of the circuit breaker, so that the tripping display of the handle of the circuit breaker becomes possible with a simple structure. It includes: a cam 44 that rotates in a certain direction by means of a motor driven by an operation signal; a slider 48 that has cam joints 50, 53 that repeatedly engage and disengage once the cam rotates half a circle and an opening for inserting the breaker handle 38 part, and slide in the on-off operation direction of the handle, after the on-off operation, the cam joints 50, 53 of the slider 48 are disengaged from the cam 44.

Description

Unit for electrically operation of circuit breaker

The present invention relates to the breaker electric operation device of remote operation circuit breaker handle.

Figure 19～Figure 23 illustrates the spy and opens the existing breaker electric operation device that discloses in the flat 4-6727 communique, Figure 19 is the oblique view that shows various states, Figure 20 is a cutaway view, Figure 21 is the amplification oblique drawing of display action parts and moving body, Figure 22 is the action specification figure of action component, and Figure 23 is the controlling party block diagram of drive division.

The state of Figure 19 (a) is, is used for the operating portion 20 of action component 2 is pushed to a side of body 1, and the hole portion 34 of protruding relatively 33 shift action parts 2 combines thereby operating portion 20 is broken away from handle 4.Handle 4 can be used for direct control, and in addition, mains switch 25 disconnects because of action component 2, so drive division 13 is failure to actuate under distant signal.

Figure 19 (b) is after action component 2 is drawn along the direction of arrow, the state that the operating portion 20 of action component 2 combines with handle 4.Handle 4 is in open position, and the spatial portion of operating portion 20 is under the state of Figure 22 (a).At this moment, action component 2 leaves mains switch 25, and therefore, to the control circuit power supply of Figure 23, drive division 13 can move.Run pass 35 jointly if connect remote closing, then input is used for the distant signal in handle 4 conductings in the control circuit of drive division 13, by the rotation of motor 15 towards direction R, by helical axis 16 and follower 21 projection 33 of moving body 17 is shifted to directions X, with hole portion 34, action component 2 moves in the same direction, therefore, to conduction position, enter the state of Figure 19 (c) and Figure 22 (b) by operating portion 20 operating grips 4.And then owing to switch Actuator Division 26 is under the state of pressing position detecting switch 27, motor 15 reverse rotations, moving body 17 oppositely moves, action component 2 is done oppositely to move thereupon, stop when position detecting switch 28 is run in switch Actuator Division 26, enter the state (direction of arrow of Figure 19 (c)) of Figure 22 (c).At this moment, Figure 22 (b) becomes with the moving range of handle 4 from conduction position to the display position that trips to equate to the distance setting of Figure 22 (c), and, operating portion 20 width of action component 2 are equivalent to the distance from handle 4 conduction positions to the tripping operation display position, thereby handle 4 is not pushed in the disconnection direction.

Like this, handle 4 enters conduction position, because of circuit breaker 3 conductings, can have electric current to flow in the circuit.When flowing through overcurrent in the circuit, circuit breaker 3 tripping operation, so handle 4 moves to trip position from conduction position, but 4 on handle moves along the arrow of Figure 19 (d) or the dotted line of Figure 22 (c) operating portion 20 in, so action component 2 is mobile.Resetting after the tripping operation finished by handle 4 being moved on to disconnection one side.

With handle 4 when conduction position moves on to open position and reset, apart from cut-off switch 36, motor 15 rotates in the S direction by closed distal, driven member 21 and action component 2 move in the Y direction, therefore, handle 4 moves on to the disconnection direction, enters the state of Figure 22 (d).At this moment, driven member 21 is run into position detecting switch 30, reverse directions, after this, on with the position before handle 4 conductings, position detecting switch 29 is run in switch Actuator Division 26, and motor 15 stops, like this, action component 2 stops, and enters the position of Figure 22 (c) identical with Figure 22 (a).

In the electrically operated device of above-mentioned existing circuit breaker, for the tripping operation that can realize circuit breaker 3 shows, operating member need surpass the space of the permissible length from conduction position to the display position that trips, simultaneously, after the conducting operation, must make action retreat the distance that equates with permissible length.

Therefore, there is following point.

(1) after the conducting operation, must make operating portion retreat the distance that equates with permissible length, therefore, the Position Control of operating portion be had required precision, control circuit is tending towards complexity.

(2) must make operating portion that move place be arranged being equal to outside the distance of permissible length, therefore, essential additional space on conducting, opening operation direction.

The present invention does for eliminating the problems referred to above, its purpose is to obtain a kind of electrically operated device of circuit breaker, make slide block break away from cam, slide block is under the situation that is not subjected to cam-restricting, with the handle interlock of circuit breaker, in conducting, disconnection, trip between each position and to move, thereby with simple structure, realize the tripping operation demonstration of circuit breaker handle, and need not exceptional space.

The object of the invention also is to obtain a kind of electrically operated device of circuit breaker, no matter is to begin tripping operation or begin tripping operation from conducting from disconnection, need only can both reset by opening operation.

A kind of breaker electric operation device of the present invention comprises: rely on the cam that is rotated on certain orientation by operation signal institute drive electric motor; Have the aperture portion of the handle that inserts circuit-breaker and the slide block that can on the switching direction, slide; Be arranged on this slide block and the moving half-turn of above-mentioned cam revolution just repeats to use the cam joint portion in conjunction with, the making operation that breaks away from action with cam joint portion and opening operation,

Described electrically operated device drives the handle of circuit breaker by the spinning movement of above-mentioned cam on the switching direction of operating,

It is characterized in that after the switching operation, the cam joint portion of above-mentioned slide block breaks away from above-mentioned cam.

Another kind of breaker electric operation device of the present invention comprises: the cam that relies on motor to rotate on certain orientation; Have the aperture portion of the handle that inserts circuit-breaker and the slide block that can on the switching direction, slide; Be located on this slide block and the moving half-turn of above-mentioned cam revolution just repeats to use the cam joint portion in conjunction with, the making operation that breaks away from action with cam joint portion and opening operation; Drive the electromotor control circuit of above-mentioned motor,

Described electrically operated device drives the handle of circuit breaker by the spinning movement of above-mentioned cam on the switching direction of operating,

It is characterized in that, in above-mentioned electromotor control circuit, be provided with diverter switch that detects cam position and the diverter switch that detects the slide position, the normally closed contact of a switch is connected in the normal opened contact of another switch, and the normal opened contact of a switch is connected in the normally closed contact of another switch.

Before of the present invention in a kind of device, after conducting, opening operation, the cam joint portion of slide block breaks away from cam, and therefore, slide block is not subjected to cam-restricting, with the handle interlock of circuit breaker, in conducting, disconnection, trip and move between each position.Like this, utilize the trip position of handle, can do tripping operation and show.

In the device of the present invention, utilize manual operation not to be subjected to the slide block of cam restriction, therefore, service load is alleviated.

In a kind of device in back of the present invention, when conducting, disconnection, the trip position of conducting, open position and the slide block of cam do not exist the position of regulation to concern, drive motor, make cam idle running, no matter carry out the position revisal, therefore, be tripping operation or tripping operation when disconnecting when conducting, by the opening operation signal of outside, can both carry out reset operation.

Fig. 1 is the front view of the embodiment of the invention 1.

Fig. 2 is the view on Fig. 1 right side.

Fig. 3 is a cutaway view of appliance cover among Fig. 2 being removed III-III along the line under the conducting state of back.

Fig. 4 is the part figure that sees from Fig. 3 left side.

Fig. 5 is the figure identical with Fig. 3 that shows off-state.

Fig. 6 shows the figure identical with Fig. 3 that is disconnected to the conducting intermediateness.

Fig. 7 is the figure that shows the state when open position trips, and is identical with Fig. 3.

Fig. 8 is the figure that shows the state when conduction position trips, and is identical with Fig. 3.

Fig. 9 is the figure that shows the state in the reseting procedure, and is identical with Fig. 3.

Figure 10 is the front view of displayed map 3 Slippers.

Figure 11 is the view of Figure 10 downside.

Figure 12 is the view of slide block.

Figure 13 is the view of release link.

Figure 14 is the figure after release link is rotated, and is identical with Figure 10.

Figure 15 is the service load performance plot of circuit breaker.

Figure 16 is the off-state figure of the electromotor control circuit of the embodiment of the invention 5.

Figure 17 is the conducting state figure of electromotor control circuit.

Figure 18 is that electromotor control circuit is from disconnecting the tripping operation state diagram of moment.

Figure 19 is the oblique view of the existing various states of device.

Figure 20 is the longitudinal sectional view of Figure 19.

Figure 21 is the amplification oblique drawing of action component and moving body.

Figure 22 is the action specification figure of action component.

Figure 23 is the controlling party block diagram of drive division.

Referring to figs. 1 through Figure 15, one embodiment of the present of invention are described.

Among the figure, the 37th, circuit breaker, the 38th, the handle of circuit breaker 37, the 39th, be installed in device frame on the circuit breaker 37 by installing rack 40, the 41st, overlay on the device frame 39 and the stationary device lid, the 42nd, the support that is provided with in the device frame 39, the 43rd, the motor that is provided with on the support 42, the 44th, cam is supported by support 42 by camshaft 45, rotate at certain orientation by motor 43 by gear part 46, the 47th, the cam bawl that is provided with on the cam 44, the 48th, slide block is remained in the device frame 39 slidably by guide rod 49, rely on the conducting of cam 44 at handle 38, the opening operation direction moves back and forth, and it is to use the mould of low-friction coefficient to be shaped.50,51 are used for conducting, the cam joint portion of opening operation, protrusion is arranged on the slide block 48, combine with cam bawl 47, break away from, the 52nd, aperture portion, be used for inserting the handle 38 that slide block 48 wears, the 53rd, release link, rely on bolt 54 to be contained in rotationally on the cam joint portion 51 of opening operation one side, the 55th, pressuring spring, all the time push down release link 53, the 56th, the manual operation axle, keep by device frame 39 and support 42, rotatably be provided with, the 57th, hand lever, be fixed on the lower end of manual operation axle 56, the roller 58 of its other end combines with slide block 48 recesses 59, the 60th, display panel, be fixed on the upper end of manual operation axle 56, have to disconnect and show 60a, tripping operation shows 60b, conducting shows 60c, the 61st, and the display window that is provided with on the appliance cover 41, the 62nd, the manual operation handle of removably installing on the appliance cover 41, the 63rd, the patchhole of the manual operation handle 62 that is provided with on the appliance cover 41, the 64th, the embedded hole of the manual operation handle 62 that manual operation axle 56 upper surfaces are provided with, the 65th, the position detecting switch of cam 44, the 66th, the position detecting switch of slide block 48.

Then action is described.

Under circuit breaker off-state shown in Figure 5, operate by conducting, motor 43 is driven, cam 44 (is detected the rotation of cam 44 per 180 degree along the direction Rotate 180 degree of arrow 67 by sensitive switch, and then stop the rotation of motor 43) in this process, as shown in Figure 6, cam bawl 47 is pressed to the cam joint portion 50 of conducting fore side the direction of arrow 68, therefore, be parked among Fig. 3 of conduction position at cam 44, slide block 48 moves towards the conducting direction of handle 38, and as shown in Figures 1 to 4, circuit breaker 37 enters conducting state.At this moment, be accompanied by moving of slide block 48, hand lever 5 rotates along clockwise direction, because the rotation of manual operation axle 56, display panel 60 also rotates along clockwise direction, as shown in Figure 1, can see that from display window 61 conducting shows 60c.

Under circuit breaker shown in Figure 3 37 conducting states, under opening operation, motor 43 is driven, cam 44 is along the direction Rotate 180 degree of arrow 69, and in this process, the cam joint portion 51(that cam bawl 47 promotes the opening operation side is actually release link 53), thereby, be stopped among Fig. 5 of scram position at cam 44, slide block 48 moves to the disconnection direction of handle 38, and circuit breaker 37 enters off-state.At this moment, along with moving of slide block 48, hand lever 57 rotates in the counterclockwise direction, relies on the rotation of manual operation axle 56, and display panel 60 is also towards rotation counterclockwise, and appearance disconnects and shows 60a in the display window 61.

Under circuit breaker shown in Figure 3 37 conducting states and circuit breaker 37 off-states shown in Figure 5, the cam joint portion 50,51 of slide block 48 all breaks away from cam bawl 47, therefore, after circuit breaker 37 tripping operations, slide block 48 is not subjected to cam 44 restrictions, handle 38 interlocks with circuit breaker 37, under the conducting state of Fig. 3, direction along arrow 70 moves, enter shown in Figure 8 by the state after the conduction position tripping operation, in addition, under the off-state of Fig. 5, direction along arrow 71 moves, and enters shown in Figure 7 by the state after the open position tripping operation.Because the various shift actions of slide block 48 at this moment, hand lever 57 is rotated, and display panel 60 also rotates, and occurs tripping operation in the display window 61 and shows 60b.

Under circuit breaker shown in Figure 3 37 conducting states, manual operation handle 62 is embedded the embedded hole 64 from patchhole 63, manual operation axle 56 is rotated counterclockwise, rely on hand lever 57, slide block 48 moves in the direction of arrow 70, can carry out manual opening operation.In addition, under circuit breaker shown in Figure 5 37 off-states, manual operation axle 62 is embedded the embedded hole 64 from patchhole 63, manual operation axle 56 is clockwise rotated, with hand lever 57, slide block 48 moves along the direction of arrow 71, can carry out manual conducting operation.When manual operation, slide block 48 is not subjected to cam 44 restriction, and therefore, handle 38 that need only operating breaker 37 gets final product, so manual operation power can alleviate significantly.Like this, the manual operation bilge construction can be simplified, thereby realizes that cost reduces.

As shown in figure 12, the cam joint portion of slide block 48 was opened at conducting fore side and opening operation side two places in 50,51 minutes, be configured on the diagonal position, like this, (cam bawl 47 breaks away from conducting fore side cam joint portion 50 to the tolerance band of motor 43 stop positions behind conducting, the opening operation, arrive the distance of opening operation side cam joint portion 51) wider, therefore, the method for shutting down of motor 43 such as braking becomes not to have been needed (can rely on friction to stop automatically).

In addition, the position of the cam joint portion 50,51 by adjusting slide block 48 can make the service load characteristic of handle 38 of the characteristic of operational stroke and service load and circuit breaker 37 consistent, therefore, can use and export little motor 43.

In addition, when conducting was operated, if moving handle 38, until the dead point of crossing handle 38 conductings, then slide block 48 and handle 38 interlocks were movable to conduction position, and therefore, even some difference of the operational stroke of handle 38, the parts generalization remains possible.

Under the state that circuit breaker shown in Figure 8 37 trips from conduction position, pass through reset operation, motor 43 is driven, cam 44 is along the direction Rotate 180 degree of arrow 72, in this process, as shown in Figure 9, the cam joint portion 51(of cam bawl 47 pushing opening operation sides is actually release link 53), therefore, when cam 44 is stopped at open position, be reset to off-state shown in Figure 5.In reseting procedure shown in Figure 9, cam bawl 47 relies on the release link 53 of struggle against oppression spring 55 and rotation and is cushioned, therefore, for the few circuit breaker 37 in reset operation leeway, eliminated reliably because of alignment error become inoperable may.In addition, make mistakes in the time of can be and make a mess of handle 38 because of reset operation.

Release link 53 is configured to rely on bolt 54 rotation, and like this, pressuring spring 55 can use the low spring of elasticity, thus can be in less space implement device.

Referring to figs. 1 through Fig. 9 and Figure 16 to Figure 18 one embodiment of the present of invention are described.The structure of this embodiment is identical with aforementioned first embodiment's, thereby omits its explanation.

Utilize the electromotor control circuit shown in Figure 16～18, describe the action under the situation of position detecting switch 66 of position detecting switch 65 that cam 44 is set in the present embodiment and slide block 48 in detail.

Among the figure, the 73rd, the conducting console switch, the 74th, the opening operation switch, the 75th, Switching Power Supply, the 76th, motor control relay, the 77, the 78th, conducting operational relay, 79, the 80th, the opening operation relay, the 81st, prevent to extract the relay of usefulness, the 82nd, prevent to extract the switch of usefulness, the 83rd, the safety switch during manual operation.

Under the off-state of Figure 16, if close conducting console switch 73, then opening operation relay 77, opening operation relay 78, motor control relay 76 and each relay make motor 43 rotations successively by excitation.Such as described above, cam 44 is along the direction rotation of the arrow 67 of Fig. 5, and cam position sense switch 65 switches at conduction position shown in Figure 3, cuts off the exciting current of conducting operational relay 78.Then, the exciting current of motor control relay 76 also is cut off, motor 43 stalls.As shown in Figure 3, under conducting state, slide position sense switch 66 is switched by slide block.

Under the conducting state of Figure 17, if closed opening operation switch 74, then opening operation relay 79, opening operation relay 80, motor control relay 76 and each relay make motor 43 rotations successively by excitation.Such as described above, cam 44 rotates along the direction of the arrow 69 of Fig. 3, and cam position sense switch 65 switches at open position shown in Figure 5, turn-offs operational relay 80, motor control relay 76 no excitations, motor 43 stalls.As shown in Figure 5, under off-state, slide position sense switch 66 is switched by slide block 48.

Under the state that trips from conduction position shown in Figure 8, the handle 38 of slide block 48 and circuit breaker 37 is towards the mobile interlock of trip position, move on to the position of Fig. 8 from the position of Fig. 3, but, cam position sense switch 65 and slide position sense switch 66 are when being in conducting under the identical state, therefore, in conducting state shown in Figure 17, electromotor control circuit is waited under the state that waits the opening operation signal.

Under the state that trips from open position shown in Figure 7, the handle 38 of slide block 22 and circuit breaker 37 is towards the mobile interlock of trip position, move on to the position of Fig. 7 from the position of Fig. 5, slide position sense switch 66 is switched, therefore, under the off-state of Figure 16, conducting operational relay 78 is by excitation, then motor control relay 76 is by excitation, and motor 43 rotates.Under the state of open position tripping operation, cam 44 and motor 43 interlocks rotate about half-turn shown in Figure 7, and then cam position sense switch 65 switches to conducting one side, cut off the exciting current of conducting operational relay 78.Subsequently, the exciting current of motor control relay 76 also cuts off, motor 43 stalls.Enter and the state from the conduction position tripping operation shown in Figure 8, perhaps with the identical state of conducting state shown in Figure 17, standby under the state that waits the opening operation signal.

If utilize manual operation handle 62, by the handle 38 of slide block 48 operating breakers 37, then slide position sense switch 66 switches.Therefore, manually after the conducting operation, under the off-state of Figure 16, slide position sense switch 66 rightabout in the figure switches, thereby, close closing operation relay 78, motor control relay 76 by excitation, motor 43 rotates, cam 44 rotation half-turns, cam position sense switch 65 switches motor 43 stalls.Under this state, enter conducting state shown in Figure 17, end position corrective action (making the action of cam idle running with manual conducting operation interlock).In addition, after manual opening operation, under the conducting state of Figure 17, slide position sense switch 66 rightabout in the figure switches, therefore, and opening operation relay 80, motor control relay 76 excitations, motor 43 rotates, cam 44 rotates half-turn, and cam position sense switch 65 switches motor 43 stalls.Under this state, enter off-state shown in Figure 16, end position corrective action (making the action of cam idle running with manual opening operation interlock).

As mentioned above, according to the present invention, slide block is from cam disengages, under the situation that is not subjected to cam-restricting with the handle interlock of circuit breaker, in disconnection, conducting, trip and move between each position, therefore, need not additional space, with simple structure the tripping operation of circuit breaker handle being shown becomes possibility.

In addition, according to the present invention, no matter be to begin tripping operation from disconnection, still begin tripping operation from conducting, only need can reset by opening operation.

Claims (5)

1. An electric operating device for a circuit breaker, comprising: a cam that rotates in a certain direction by means of a motor driven by an operating signal; A block; a cam coupling part for an on-action cam joint and a cam coupling part for a disconnection operation that are provided on the slider and that the above-mentioned cam repeatedly engages and disengages every half a turn, The electric operating device drives the handle of the circuit breaker in the on-off operation direction through the rotation of the above-mentioned cam, It is characterized in that, after the on-off operation, the cam coupling part of the above-mentioned slider is separated from the above-mentioned cam. 2. The electric operating device of a circuit breaker according to claim 1, characterized in that a manual lever operated by a manual operating handle is combined with the slider. 3. The electric operating device of a circuit breaker according to claim 1, characterized in that the cam coupling part of the slider is arranged at two places on the closing operation side and the closing operation side, forming a diagonal arrangement. 4. The electric operating device of a circuit breaker according to any one of claims 1 to 3, characterized in that a slider buffer mechanism is provided, and the reset operation of the circuit breaker is performed through the buffer mechanism. 5. An electric operating device for a circuit breaker, including: a cam that rotates in a certain direction by means of a motor; a slider that has an opening that is inserted into the handle of the circuit breaker and can slide in the on-off direction; On the slider, the above-mentioned cam repeatedly engages and disengages every half a turn, and the cam joint for on-operation operation and the cam joint for off-operation operation; the motor control circuit that drives the above-mentioned motor, The electric operating device drives the handle of the circuit breaker in the on-off operation direction through the rotation of the above-mentioned cam, It is characterized in that a switch for detecting the position of the cam and a switch for detecting the position of the slider are provided in the motor control circuit, the normally closed contact of one switch is connected to the normally open contact of the other switch, and the normally open contact of one switch is connected to to the normally closed contact of another switch.

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