DE19902833A1 - Switching movement transmission device for circuit breaker - Google Patents

Abstract

A device for transmitting a movement which, in dependence of a first translatory movement of a first coupling element (1) to which a first component (2) can be coupled, effects a translatory movement of a second coupling element (3), to which a second component (4) can be coupled. The first and second coupling elements (1,3) are movably joined to one another via a first rigid element (7), and the first coupling element is hinge-connected to a first lever (8), which is swivel-mounted on a first positionally fixed mounting point (9). The second coupling element (3) is hinge-connected to a second lever (10) which is swivel-mounted in a second positionally fixed mounting point (11). The first and second mounting points (9,11) lie opposite one another on different sides of the paths of movement of the first and second coupling elements (1,3).

Description

The invention relates to a device for transmission movement, which is dependent on a first, translatory movement of a first coupling element that a first component can be coupled, a translatori cal movement of a second coupling element to the one second component can be coupled.

Such a device is from DE 195 24 636 C1 for example as a deflection gear for a high-voltage line switch known. It describes that three scarves terpole of a three-pole high-voltage circuit breaker by means of a common drive via a drive linkage are drivable, each switch pole by means of a crank is connected to the drive, on the one hand, the deflection the drive movement and on the other hand a translation works.

Due to the different starting positions of the individual Cranking there will be a time offset when actuated of the individual switch poles reached.

Each individual deflection crank consists of a two-armed He The lever arms are at right angles to each other hen, the ends of the lever arms form coupling elements, on the one hand a vertical shift rod, on the other hand the horizontal drive rod can be coupled as components are. A translatory movement of the free end of the first lever arm, which is connected to the drive rod, causes a translational movement of the free end of the second lever arm, which is connected to a shift rod.

The described design ensures that the Switch switch poles sequentially in time.

The present invention has for its object a To create device of the type mentioned that with a variable ratio enables simple means light.

The object is achieved in that he ste and the second coupling element by means of a first star ren element are movably connected and that the first coupling element articulated with a first lever is connected to a first fixed bearing point is pivotally mounted and that the second coupling element is articulated with a second lever, which in one second fixed bearing point is pivotally mounted and that the first and second bearing points spaced apart are, especially next to each other on one side of the movement path of the first rigid element.

The device according to the invention brings about transmission a movement that the first and the second component, the are coupled together by the device in one first phase of movement each with essentially the same ben speed to be moved that in a second phase the second component in its movement stroke the first component lags behind and that in a third phase the second component is accelerated. When transferring a movement in the Reverse sense of motion is initially accelerated the second component compared to the first component and then a corresponding retardation of the second component.

Advantageous embodiments of the inventions can be found in the sub-claims 2 to 7 .

The fixed bearing points are each advantageously in the Plane of movement of the rigid elements and the ankop fur elements.  

The coupling elements are in the end regions of the rigid elements arranged and can be used as connecting bolts or be designed as another mechanical component, various other parts such as levers and rigid ele elements can be coupled. The coupling elements can also be used as Be articulated.

The invention also relates to a high voltage circuit breakers with multiple switch poles, of which we at least two can be driven by a common drive are, at least one of the jointly driven Switch poles with the drive by means of a device one of claims 1 to 5 is connected.

A high voltage circuit breaker points in each switch pole an interrupter unit in which two switch contacts with brought into galvanic contact or from each other be separated. For this purpose, at least one switching contact is included driven by the drive.

Such a high voltage circuit breaker is for use in a multi-phase high-voltage system with a pre Direction according to the invention easily adjustable such that the individual switch poles when switching, especially when Switch on regarding the production of the first galvanic Contact between the switch contacts a certain have a time offset, for example 3 each Milliseconds leading or lagging one another. On this way the different switch poles can be related the respective phase of the switching multi-phase change electricity can be operated at a convenient time.

It is also possible, by means of a common drive, when capacitive switching two of the switch poles at the same time press while the third switch pole with a time Chen offset of 5 milliseconds afterwards. The third switch pole is then by means of an inventive  Device connected to the common drive. With such offset circuits, the individual switch poles at controlled and network-synchronized actuation in the best possible way relieved.

In the following the invention is based on exemplary embodiments play shown in a drawing and then described ben.

The show

Figs. 1 to 3, the device according to the invention schematically in a simple specific Ausgestal tung,

Figures 4 to 6, the device tion. Schematically in mirror-inverted doubled exporting,

Fig. 7 shows schematically an embodiment in which the first and the third fixed bearing point coincide and

Fig. 8 is a schematic representation of a three-pole high-voltage switch with an inventive device,

9 is a path-time diagram terpole. For three scarf,

FIGS. 10 and 11 schematically embodiments with a single site and the path of movement / the rigid element (s) lying bearing points.

In Fig. 1, a device for transmitting a Be movement is shown schematically with a first Ankoppelele element 1 , to which a first component 2 in the form of a first drive rod part can be coupled and with a second coupling element 3 , which with a second component in the form of a second drive rod section 4 is connectable.

The drive rod sections 2 , 4 are movable in the direction of the arrows 5 , 6 . The coupling elements 1 , 3 are each formed by bolts which pass through the two ends of a coupling rod 7 , so that the coupling rod 7 forms a rigid element which movably connects the coupling elements 1 , 3 to one another. The first coupling element 1 is connected in an articulated manner to a first lever 8 which is pivotably mounted on a first fixed bearing point 9 . This articulated Verbin dung can be designed such that the first coupling element 1 passes through a bore of the first lever, however, the hole may also be in place in phantom in FIG. 1, indicated slot in the first lever 8 is provided a.

The second coupling element 3 is pivotally connected to a second lever 10 which is pivotally mounted in a second fixed bearing point 11 .

The bolts that form the first coupling element 1 and the second coupling element 3 , each enforce the ends of the first lever 8 , the coupling rod 7 and the first drive rod section on the one hand and the ends of the second He lever 10 , the coupling rod 7 and the second drive rod section 4 on the other hand.

The first drive rod section 2 is connected to a drive, not shown, which drives the Antriebsstan gene section 2 in the direction of arrow 5 .

As a result, the first lever 8 is pivoted counterclockwise around the fixed bearing point 9 . By means of the coupling rod 7 , this movement is transmitted to the end of the second lever 10 , which is then pivoted clockwise.

An intermediate state of the movement described is shown in FIG. 2. Due to the pivoting movement of the first lever 8 and the second lever 10 , the coupling rod 7 has been rotated ge, and the projection of the coupling rod 7 on the horizontal connecting line between the first drive rod section 2 and the second drive rod section 4 has been shortened.

In this state, the first drive rod section 2 has moved in the direction of arrow 5 by a certain distance, while the second drive rod section 4 has moved in the same direction by a smaller distance.

If the movement continues in the described sense, that is, the first lever 8 is pivoted further counterclockwise and, accordingly, the second lever 10 is pivoted further clockwise, the state shown in FIG. 3 is established in which the coupling rod 7 As shown in FIG. 1, an extension of the first and second drive rod sections 2 , 4 forms.

To get to this state, the first Antriebsstan gene section 2 has traveled a certain distance from the start of the movement. The second drive rod section 4 has traveled an equally long distance overall. The projection of the coupling rod on the horizontal connection between the first and the second drive rod section now corresponds again to the length of the coupling rod 7 , the entire arrangement consisting of the drive rod sections 2 , 4 and the coupling rod 7 is stretched again.

The total movement corresponds approximately to the longitudinal movement of an presented drive rod, which is formed by the drive rod sections 2 , 4 and the coupling rod 7 , in the direction of arrow 5 from FIG. 1. During this movement is by the positive guidance of the coupling rod 7 to the Levers 8 , 10 cause the presented drive rod to buckle and thus bring the drive rod sections 2 , 4 closer together.

Towards the end of the movement, the rod sections 2 , 4 and the coupling rod 7 extend to the existing arrangement.

In summary, it can thus be stated that the translatori cal movement of the first drive rod section is first transmitted to the first coupling element 1 and that this translational movement is initially transmitted in a ratio of 1: 1 to the second coupling element 3 and the second drive rod section 4 .

In a central section of the movement, as shown in FIG. 2, a translational movement of the first drive rod section 2 is transmitted in a lower transmission ratio to the second coupling element 3 and the second drive rod section 4 . The second drive rod section 4 thus moves more slowly than the first drive rod section 2 .

If the movement is continued, the extension of the arrangement accelerates the second coupling element 3 and the second drive rod section 4 and now moves faster than the first drive rod section 2 until a completely stretched arrangement is reached.

From the beginning to the end of the movement, the first drive rod section 2 or the first coupling element 1 and the second drive rod section 4 or the second coupling element 3 cover the same distance overall. However, the second coupling element 3 and the second drive rod section 4 lag behind the first drive rod section 2 on part of the route in order to make up for the retardation by accelerating the movement.

In FIG. 4, a device is shown, which corresponds approximately to a mirror-inverted doubled apparatus of Figs. 1 to 3. The device from FIG. 4 can be made from the device shown in the preceding figures by additionally introducing a third coupling element 12 in the form of a further bolt, a second rigid element 13 in the form of a second coupling rod and a third lever pivotally mounted in a bearing point 15 14 are formed.

In FIG. 4, the entire assembly consisting of the first drive rod section 2, the first rigid member 7 in the form of a coupling rod is shown, the second rigid element 13 in the form of a second coupling rod and the second drive rod section 4 in a stretched form.

By pushing the first drive rod section in the direction of arrow 5 , a pivoting movement of the lever 8 he takes place counterclockwise, and a pivoting movement of the second lever 10 and the third lever 14 clockwise.

The second drive rod section 4 is then just moved if in the direction of arrow 5 .

At the same time, due to the positive guidance of the rigid elements 7 , 13 by means of the fixed levers 8 , 10 , 14, the arrangement will buckle, as shown in FIG. 5. By the buckling of the rigid elements 7, 13, the first drive rod section 2 and the second driving rod portion 4 closer to each other, whereby in spite of the same-direction movement of the second drive rod section 4 is a smaller distance travels than the first drive rod Section 2 below. In the example shown in FIGS . 4 to 6, the retardation of the second drive rod section 4 compared to the first drive rod gene section 2 compared to the device from FIGS . 1 to 3 is increased because the buckling effect occurs almost mirror-image doubled. With such an arrangement, a greater deceleration of the movement to be transmitted can thus be achieved.

If the movement of the device in the indicated sense is continued, this leads to the constellation, which is shown in FIG. 6, in which the rigid elements 7 , 13 together with the first drive rod section 2 and the second drive rod section 4 again as Start the movement to form an elongated arrangement.

The second drive rod section 4 has thus made up for the retardation in the last part of the movement as a result of an additional acceleration.

The first lever 8 can also have an elongated hole for guiding the first coupling element 1 in this variant (shown in dashed lines).

In Fig. 7 a variant is shown, in which the stationary bearing points of the second lever 10 and third lever 14 coincide at one point. With otherwise approximately the same function, a bearing point is saved and the construction is simplified and less expensive.

In FIG. 8, a three-pole high-voltage power switch is shown with a first switch pole 16, a second switch pole 17 and a third switch pole 18, which can be driven by a switch drive 20 by means of a common drive rod 19. The drive 20 causes the drive crank 23 to pivot in the direction of the arrows 21 and 22, respectively.

The three switch poles are in the form shown in the off position.

By pivoting the drive crank 23 in the direction of arrow 21 , that is to say counterclockwise, the drive movement is by means of the respectively fixedly mounted order crank handles 24 , 25 , 26 in a vertical, upward movement of the shift rods of the switch poles 16 , 17 , 18 implemented. The respective deflection cranks 24 , 25 , 26 are mounted so that they can be pivoted in a fixed manner in the bearing point shown in each case in a thicker manner.

In the course of the drive rod 19 , two devices 27 , 28 according to the invention are provided, which, compared to a first drive rod section 29 arranged in the region of the drive 20 , in the second drive rod section 30 and to an even greater extent in the third drive rod section 31 with a switch-on movement, initially a delayed transmission cause the drive movement in order to cause the retardation to catch up at the end of the drive movement.

The individual devices 27 , 28 are only shown schematically in FIG. 8, but in principle correspond to the device shown in FIG. 4. The stationary storage points are only indicated by thickened points in FIG. 8.

To describe the actual switching movement is num, that the movement of the individual switch poles 16 , 17 , 18 begins at the same time and that all switch poles have the end of their movement at the same time he has reached.

Due to the retardation of the second switch pole 17 and the third switch pole 18 in a central region of the movement, however, contact is established, that is to say the establishment of the first galvanic contact between the two switching contacts of the interrupter unit 32 of the second switch pole 17 and the interrupter unit 34 of the third Switch pole 18 later than in the case of the interrupter unit 33 of the first switch pole 16 .

After this contact, however, the interrupter unit 32 of the second switch pole 17 catches up with a subsequent acceleration to the movement state of the interrupter unit 33 of the first switch pole 16 .

The interrupter unit 34 of the third switch pole 18 it reaches its contact only after the interrupter unit 32 of the second switch pole 17 , but is then greatly accelerated in the stretching phase of the device shown in FIG are pushed together to achieve a good current carrying capacity, to the extent that all three switch poles reach the same end position at the same time.

It is thus achieved by the invention that all switch poles each start and end their movement at the same time that and that in the course of the movement, as desired, a Retardation of one or two switch poles up to the contact gift can be achieved, but after contacting in further course of the switching movement is caught up.  

The path-time diagram of the three switch poles 16 , 17 , 18 to the three phases R, S, T is shown schematically by way of example in FIG. 9.

Fig. 10 shows schematically a Vorrich invention tung, the one on the side of a first component in form of a first driving rod portion 102 and on the on the side thereof, a second component in the form of a second to a rod portion 104 can be coupled is. The two drive rod sections 102 , 104 are only partially shown.

The coupling elements 101 , 103 are formed by bolts, each of which articulates a rigid element 107 in the form of a rod with a first lever 108 on the one hand and with a second lever 110 on the other. The first lever 108 is pivotally mounted in a first fixed bearing point 109 , while the second lever 110 is pivotably mounted in a second fixed bearing point 111 .

The possible paths of movement of the first and two coupling elements 101 , 104 by a pivoting movement of the first and the second lever 108 , 110 are represented by circular path sections 116 , 117 .

The bearing points 109 , 111 lie side by side on the same side of the movement path of the rigid element 107 . The first lever 108 and the second lever 110 move in the same sense during the operation of a movement to be transmitted.

If a pushing movement takes place through the drive rod section 102 onto the first coupling element 101 , then the first and second levers 108 , 110 are pivoted in a clockwise direction, the rigid element 107 transmitting the movement to the second drive rod section 104 .

At the beginning of the movement, the first drive rod section 102 and the second drive rod section 104 have approximately the same speed. In a second phase immediately after the start of the movement, a buckling of the rigid element 107 between the drive rod sections 102 , 104 results in a retardation of the second drive rod section 104 . In a third section of the movement, the second drive rod section 104 is accelerated again by stretching the arrangement consisting of the drive rod sections 102 , 104 and the rigid element 107 , so that at the end of the movement the distance traveled by the second drive rod section 104 is approximately that of corresponds to the first drive rod section 102 .

Depending on whether the drive is coupled to the first component and the output to the second component, as shown here provided, or whether the drive coupled the second component and the downforce to the first component can be controlled by the device according to the invention also an acceleration of output component at the beginning of the movement and a achieve subsequent retardation.

Fig. 11 shows a comparison of Fig. 10 mirror image Lich doubled arrangement, wherein the first rigid member is coupled 107 by means of the first Ankoppelelementes 101 with a two-th rigid element 113, which in turn is connected with the first driving rod portion 102 by means of the third Ankoppelelementes 112 is.

The third lever 114 is also articulated to the coupling element 112 in the form of a connecting bolt and in turn is fixed in the bearing point 115 so as to be pivotable.

This arrangement results in a movement profile which is similar to that of the arrangement shown in FIG. 10, where, however, greater retardation and subsequently greater acceleration of the second component is achieved by doubling the arrangement. The arrangement shown in FIG. 11 has the advantage over the arrangement shown in FIGS. 4 to 7, in which the fixed bearing points are on different sides of the movement paths of the rigid elements, that the retardation of the second component in the second , Middle phase of the movement as the subsequent acceleration are weaker than in the embodiment of FIGS. 4 to 7, so that according to FIG. 11 in the middle part of the movement, the speeds of the first drive rod section 102 and the second drive rod section 104 are lower Show difference. This is important in view of the fact that when the device is used in a high-voltage circuit breaker, the speeds of the switching contacts to be moved in a multi-phase high-voltage power switch must not differ too much from one another. With the latter embodiment, the difference of the contact speeds of the individual poles of the high-voltage circuit breaker is thus limited.

Claims (8)

1. A device for transmitting a movement, which is dependent on a first, translatory movement of a first coupling element ( 1 , 101 ) to which a first component ( 2 , 102 ) can be coupled, a translatory movement of a second coupling element ( 3 , 103 ) to which a second component ( 4 , 104 ) can be coupled, characterized in that the first and the second coupling element ( 1 , 3 , 101 , 103 ) are movable with one another by means of a first rigid element ( 7 , 107 ) are connected and that the first coupling element ( 1 , 101 ) is articulated to a first lever ( 8 , 108 ) which is pivotally mounted at a first fixed bearing point ( 9 , 109 ) and that the second coupling element ( 3 , 103 ) with a second lever ( 10 , 110 ) is articulated, which is pivotally mounted in a second fixed bearing point ( 11 , 111 ) and that the first and the second bearing point ( 9 , 11 , 109 , 111 ) are spaced apart are standing, in particular next to each other on one side of the path of movement of the first rigid element ( 7 , 107 ). 2. Device according to claim 1, characterized in that the first coupling element ( 101 ) by means of a second rigid element ( 113 ) is movably connected to a third coupling element ( 112 ) which is also articulated with a third lever ( 114 ) which is pivotally mounted in a third fixed bearing point ( 115 ) and in that the first, second and third bearing points ( 108 , 115 ) lie side by side on the same side of the movement paths of the first and second rigid elements ( 107 , 113 ) and that to the third coupling element ( 112 ) the second construction part ( 104 ) can be coupled. 3. Apparatus according to claim 1, characterized in 16 that the first and the second bearing point ( 9 , 11 ) opposite each other on different sides of the movement paths of the first and two th coupling element ( 1 , 3 ). 4. The device according to claim 3, characterized in that the first coupling element ( 1 ) by means of a second star ren element ( 13 ) is movably connected to a third Ankoppelele element ( 12 ), which is also articulated to a third lever ( 14 ) , which is pivotally mounted in a third fixed bearing point ( 15 ) that the. first and the third bearing point ( 8 , 15 ) opposite each other on different sides of the trajectories of the first and third coupling elements ( 1 , 12 ) and that the second component ( 4 ) can be coupled to the third coupling element ( 1 , 12 ). 5. Apparatus according to claim 2 or 4, characterized in that the distance of the first fixed bearing point ( 9 ) from the second fixed bearing point ( 11 ) is equal to the distance of the first bearing point ( 9 ) from the third bearing point ( 15 ). 6. The device according to claim 2, 4 or 5, characterized in that the lengths of the first and the second rigid element ( 7 , 13 ) are the same. 7. The device according to claim 4, characterized in that the second and the third bearing point ( 11 , 15 ) are identical. 8. High-voltage circuit breaker with a plurality of switch poles ( 16 , 17 , 18 ), of which at least two ( 16 , 17 , 18 ) can be driven by a common drive ( 20 ), at least one of the switch poles ( 16 , 17 , 18 ) which can be driven jointly the drive ( 20 ) is connected by means of a device ( 27 , 28 ) according to one of claims 1 to 7.