EP2543054A1

EP2543054A1 - Drive arrangement of a circuit breaker

Info

Publication number: EP2543054A1
Application number: EP11707373A
Authority: EP
Inventors: Stefan Wilke
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2010-03-05
Filing date: 2011-02-23
Publication date: 2013-01-09
Anticipated expiration: 2031-02-23
Also published as: CN102782791A; RU2566681C2; RU2012142312A; CN102782791B; DE102010011198A1; EP2543054B1; WO2011107375A1

Abstract

A drive arrangement of a circuit breaker has a pivotable drive lever (17). The pivotable driver lever (17) interacts with a blocking element (14), the blocking element (14) having a first blocking region (27), which can move into a pivoting region of the drive lever (17), and a first release region (28). Furthermore, a second release region (30) and a second blocking region (31) can be arranged on the blocking element (14), said release region and blocking region interacting with a pivotable pivoting lever (13) of a further switching device.

Description

description

The invention relates to a drive arrangement of a circuit breaker with a pivotable drive lever and with a blocking element with a first blocking region which can be moved into a pivoting region of the drive lever and with a first release region for the pivotable drive lever.

Such a drive arrangement is known for example from the published patent application DE 10 2008 008 479 AI. In the known arrangement, it is provided that a plurality of blocking elements are arranged on a circuit breaker. A Blo ^¬ ckierelement is each associated with a switching pole of the power scarf ^¬ ters. In the course of a desired miniaturization of the circuit breaker, the available space is increasingly reduced.

It is therefore an object of the invention to train the known drive arrangement such that additional functions can be taken. According to the invention the object is achieved in a drive arrangement of the type mentioned above in that the blocking element has a second release area and a second blocking area for a pivotable pivot lever of another switching device.

A set up a second blocking area and a two ^¬ th release area on the blocking element makes it possible to use the blocking element not only for the power switch, but also for a further switching device. In order to It is possible, the robust construction not only for influencing a movement of the drive lever of the power ^{scarf ¬} ters, but also for controlling the mobility of a

pivotable pivot lever of another switching device to use. Thus, additional functions can be taken over in a small space by the blocking element. On ^¬ basis the arrangement of the two release areas and the blocking ^{¬ areas} in one and the same blocking element, it is possible in a simple manner to couple the function of the drive lever of the circuit breaker and the function of Schwenkhe ^¬ lever of the other switching device with each other and so if necessary carry out a mutual locking of the Leis ^¬ tung switch and the other switching device. So it is possible, for example, that due to the arrangement of the release areas and the blocking areas on the Blo ^¬ ckierelement actuating only one of the two switching devices is possible. For example, it may be provided that a switching operation of the further switching device is ^inhibited if the power switch is currently not blocked by the blocking element. Of course, a reverse effect may be desirable.

A release area should advantageously be delimited by at least one shoulder, which lies essentially transversely to the direction of movement of the blocking element. It can be seen against ^¬, with respect to the direction of movement of the release area on either side of a release area shoulders to arrange ^¬. Over the shoulder (s) any movement of the blocking element is prevented in a dipping of the pivot lever or the drive lever in the respective release area. By projecting into the respective release areas of the blocking element ^¬ drive lever or pivot lever acting as stops shoulders movement of the Blo ^¬ ckierelementes at least in one direction by the drive lever or the pivot lever can be prevented. So can be inhibited and the loading will be limited wegbarkeit of the blocking element on the free ^¬ transfer areas with submerged drive / pivot lever via the blocking portions pivotal movement of the drive lever and of the pivoting lever.

A further advantageous embodiment may provide that the drive lever is pivotable about a first pivot axis and the pivot lever is pivotable about a second pivot axis and the two pivot axes are aligned substantially parallel, wherein the blocking element is displaceable substantially parallel to the pivot axes.

By arranging the pivot axes of the drive lever and the pivot lever approximately parallel to each other, it is mög ^¬ Lich to let cooperate with both the drive lever and to the pivoting lever, the blocking element in a simple manner. For this purpose, the blocking element can be substantially stored paral lel to the pivot axes ^¬ displaceable. Thus it is possible that the respective blocking portions, that is, the first blocking portion which is associated with the pivotal drive lever and the second blocking portion, which is assigned to the pivot lever, can also block the respectively assigned He ^¬ bel. According to the shape of the blocking element, the drive levers or pivot levers provided for abutment against the respective blocking regions are designed with a counter-shape. By a robust configuration, it is possible that, for example, even in an attempt to actuate the circuit breaker or the further switching device driving forces can be absorbed by the blocking element without ^{hervorzuru ¬} fen on the blocking element deformations. It is advantageous in a parallel orientation of the pivot axes, the position of the drive lever or the

Swivel lever and thus their pivot planes offset in the axial direction to provide each other. This makes it possible, the blocking areas and the release areas on the Blockierele ^¬ ment spaced apart from each other and so plan appropriate reserves. Thus, the overall arrangement of simple robust machine elements can be made, even with a low dimensional stability is still given a secure effect of the blocking element.

A further advantageous embodiment can provide that the first blocking region is arranged in a first stop surface and the second blocking region in a second stop surface, wherein the two stop surfaces are arranged at an angle, in particular at right angles to each other.

The design of the block portions in abutment surfaces enables large sections of the drive lever loading relationship as the swiveling pivot lever provided, beat wel ^¬ che against respective stop surfaces of the block portions. The stop surfaces can be shaped differently. However, it is advantageous if the stop ^¬ surfaces are designed as flat surfaces. In addition, however, curved or profiled stop surfaces can be used. By an angular arrangement of the stop surfaces to each other, it is also possible that mutually different areas, namely lying at an angle to each other areas on the blocking element for blocking the drive lever or for blocking the pivot lever are used. This allows an individual adjustment of the blocking areas of the blocking element SUC ^¬ gen. Because of the arrangement of the stop surfaces at different angles to each other opposite sides of the Blockierelemen- tes can not be influenced by the other not associated drive lever be ^¬ relationship as pivoting lever or changed the corresponding stop surfaces. Conversely, the blocking portions can in each case only act on the drive lever to ^¬ parent or pivoting lever while the unassigned pivot lever or the drive lever remains uninfluenced. The stop surfaces may also extend beyond the respective blocking region. In this case, a blocking area is arranged in ^¬ a stop face, which extends over the extent of the actual blocking region addition. That is, the Blockierbe ^¬ is rich in the stop face and the stop face is greater than the blocking portion. However, it can also be provided that the extent of a stop surface corresponds to the extent of a blocking region.

A further advantageous embodiment may provide that the two stop surfaces abut each other and limit a body edge of the blocking element.

An angular position of the abutment surfaces, in particular a rectangular position of the abutment surfaces, including a common body edge, allows easy manipulation of the blocking element during a manufacturing process.

By appropriate casting, milling or similar method, the blocking element can be brought into shape. Due ^{¬ to} the angular position of the abutment surfaces to each other and the limitation of a body edge between the abutment surfaces complex shapes of the blocking element are avoided. Thus, a simple construction for the blocking ^{element can be} set and it can be held on a robust basic shape of the blocking element. The stop surfaces may extend beyond the blocking areas. blocks, so that the blocking areas are only part of the An ^¬ impact surfaces.

A further advantageous embodiment can provide that the blocking element is a profiled bar.

A profiled bolt is essentially to be regarded as a cuboid, wherein the bolt is displaceable parallel to one of its body edges. Accordingly, the bolt is guided and movable via a suitable drive element. By a profiling of the bolt, it is possible to influence the ^¬ mobility of the drive lever or

Swiveling lever provided stop surfaces and vorzu ^¬ see a corresponding blocking movement of the drive lever or the pivot lever through the blocking areas, whereas in the release areas a corresponding immersion or pivoting of drive lever or pivot lever on the blocking element is made ^¬ light. With a correspondingly angular arrangement of the abutment surfaces of the blocking regions, the bolt can have a corresponding profiling in different directions. Thus, in particular cross-section reduced portions of the bolt may be provided to form the release areas ^¬ . For profiling corresponding cutouts, grooves, etc. may be introduced into a cuboid bar, with corresponding shoulders may be arranged in the transition region between different cross sections.

A further advantageous embodiment may provide that the blocking element is driven in the manner of a crank mechanism by a pivoting control lever.

The blocking member is moved depending on external Bedin ^¬ conditions. For example, it may be provided that on the circuit breaker is to prevent a movement of the drive lever of the circuit breaker reliable. Entspre ^¬ accordingly, the blocking element is ^¬ rich to sawn with its first Blockierbe in the pivoting range of the drive lever into account. It can be provided that a corresponding manu ^¬ elle triggering a movement of the blocking element is made. However, it can also be provided that a control of the control lever takes place in dependence on the state of a further component. For example, the circuit breaker may be combined with a circuit breaker which initiates movement of the blocking element at a corresponding disconnected position of the circuit breaker so that the first blocking section is moved into the pivoting range of the drive lever. However, it can also be provided that a separation position of the Leis ^¬ tung switch is defined by the blocking member. The circuit breaker is in its off position and has an open breaker point. By blocking a Einschaltbe ^¬ movement of the pivotable driving lever means of the first blocking portion, it is now possible to provide a movement of the

Exclude drive lever of the circuit breaker, so that now a disconnection of the circuit breaker is si ^¬ chergestellt, as even with an unintentional Betä ^¬ term or a fault in the circuit breaker a switching movement is mechanically prevented by the blocked drive lever.

If the blocking member is driven in the manner of a crank through a pivotable control lever, so it is possible to provide a rotary motion, as is generated, for example, by rotating ben ^¬ Antrie to change in a simple manner into a linear movement of the blocking element. Furthermore, the pivot lever can also be used to redirect a linear movement, for example, 90 degrees. Since at ^¬ can be provided, that the pivotable control lever is directly connected to the blocking member into engagement or that the crank mechanism converts the interposition of a connecting rod a pivoting movement of the control lever into a linear movement of the blocking element.

Furthermore, it can be advantageously provided that the blocking element has a shoulder which divides the blocking ^element into a first and a second section, the first section having a larger cross section than the second section and the first blocking region in the first section and second blocking area are located in the second section.

The blocking element is preferably constructed in the manner of a cuboid, wherein this can have a corresponding profiling, ie, different cross-sections. For profiling, the cuboid may be provided with a corresponding shoulder which divides the blocking element into two sections. In this case, the two sections should extend along this Be ^¬ movement axis relative to the axis of movement of the blocking element. The shoulder preferably extends transversely to the axis of movement. The shoulder can be generated, for example, by reducing the cross-section of the blocking element, so that the blocking element in the first section is substantially cuboid, wherein the cross section of this cuboid is greater than the cross section of the substantially cuboid second section. The blocking element can have an L-shaped contour due to the cross-sectional reduction. An arrangement of the blocking regions in the first and in the second section allows various dimensions of the drive lever or the Pivot lever. This makes it possible to relatively wide spaced pivot axes of drive lever bezie ^¬ hurry pivot lever over a block located between these two axes blocking element. The shoulder forms a sudden cross-sectional reduction between the first and second portions of the blocking element. Through the shoulder of the first release area of the drive lever is limited. When the drive lever pivots into the first release region, the shoulder limits movement of the blocking element in one direction. Thus, a shipment of the second release area in the

Pivoting range of the associated pivot lever prevents and the second blocking area is located reliably in

Swivel range of the pivot lever and suppresses a movement of the pivot lever. Thus, on the one hand via the first blocking region of the blocking element movement of the An ^¬ drive lever can be prevented, on the other hand, a movement of the blocking element can be prevented in a pivoting of the drive lever in the first release area. Further, on the one hand via the second blocking region of the blocking element movement of the pivot lever can be prevented, on the other hand, a movement of the blocking element can be prevented in a pivoting of the pivot lever in the second release region and consequently the first blocking region remains in the pivot plane of the drive lever and blocks a switch-on of the drive lever of the circuit breaker.

In this case, it can be advantageously provided that the second release area is located in the second section and has a reduced cross section with respect to the cross section of the second section. By an additional reduction of the cross section of the two ^¬ th portion of the first and second Freigabebe may be ^¬ rich arranged within the second section. The second release area can profile the blocking element in the manner of a groove, for example. The groove may in this case be inserted in ^¬ We sentlichen transversely to the direction of the blocking element in the blocking element, in particular in the second section. This is at a pivoting of the

Swivel lever in the second release region of the blocking element prevents movement of the blocking element by the ^¬ pivoted pivot lever and the both sides of the pivot lever in the direction of the axis of movement of the blocking element befind ^¬ union groove cheeks. Thus, for a movement of the pivot lever Bezie ^¬ hung example of the drive lever by the blocking element can be ^¬ be excluded, on the other hand be ^¬ relationship instance, by the pivot lever to the drive lever, a movement of the Blo ^¬ ckierelementes be limited. This is a mutual locking of the pivot lever and the drive lever made ^¬ light. That is, it is only one of the two levers freely movable, while the other is blocked.

A further advantageous embodiment can provide that the first release area is located in the second section.

An arrangement of the first release area and the second blocking area in one and the same second section makes it possible on the one hand to lock the second blocking area and the first clearance area relative to one another. Since these two areas located on one and the same second portion whose relative position to one another is permanently impressed on the Blo ^¬ ckierelement. The first release area and the second blocking region may, for example, have the same cross sections.

A further advantageous embodiment can provide that the drive lever is supported by a shaft which protrudes through ei ^¬ ne fluid-tight Kapselungswandung an interrupter unit of the circuit breaker.

Circuit breakers usually have at least one, usually a plurality of interrupter units. An interrupter unit is the assembly which is used to produce relationship ^¬ as interruption of a current path. For example, the interrupter unit may have relatively movable contact pieces, which are in galvanic contact with each other in the on state and are electrically isolated from each other in the off state. In order to protect the contact pieces, it is advantageous to provide an interrup ^¬ chereinheit with a fluid-tight enclosure, surrounding which disposed in the interior parts fluid-tight.

In order to transmit a movement into the encapsulation, it is advantageous to allow an encapsulation wall to pass fluid-tightly from a shaft and to allow the drive lever to rest directly on this shaft. On the one hand, it is possible in a simple manner to seal the rotatable shaft against ^¬ over the Kapselungswandung, on the other hand, an arrangement of the drive lever immediately adjacent to Un ^¬ terbrechereinheit a guarantee that a movement of the shaft can be reliably prevented. A movement is transmitted to the shaft via the drive lever and introduced into the encapsulation via the shaft. Thus, even in the event of a fault in the drive train, a reliable blocking of a movement of the shaft and, consequently, of a movement in the interior the encapsulating housing located mechanism for driving the contact pieces by the blocking element possible.

A further advantageous embodiment may provide that the pivot lever is shaped in the manner of a sector of a circular cylinder.

An embodiment of a pivot lever in the manner of a sector of a circular cylinder allows a blocking effect of

Swivel lever on the blocking element during a large pivoting range of the pivotable pivot lever ermögli ^¬ chen. Thus, it can be provided, for example, that the pivot lever, for example, represents an at least 90 ° segment of a circular cylinder, so that upon pivotal movement of the pivot lever by 90 °, a corresponding locking effect by the pivot lever over the entire pivot angle ge ^¬ guaranteed. Thus, for example, it is possible to cause a corresponding blocking of a movement of the blocking element already with the onset of a movement of the pivoting lever and to maintain it during the entire further course of a movement of the pivoting lever.

Furthermore, it can be advantageously provided that a status display is arranged on the blocking element.

By means of the blocking element is possible in a simple manner, also to represent the state of the circuit breaker. A Blo ^¬ ckieren a movement of the drive lever by means of the first blocking region can be externally displayed. Since a blocking effect is generated due to a displacement of the blocking element, the position of the Blockierelemen ^¬ tes is itself an indicator of the state of the power scarf ^¬ ters. If the blocking element is blocked in the first blocking area, the circuit breaker must be in an switching position and only in this case, it is possible to spend the first blocking region of the blocking element in the pivoting range of the drive lever. Accordingly, it is possible to indicate the state of the circuit breaker, for example by a color mark. Over a Maskie ^¬ tion of the color marking this can be visible or hidden depending on the position of the blocking element.

It may further be advantageously provided that the BLO ckierelement with the state display by a wall is towards ^¬ agitated.

If the blocking element with the status display moved through a wall, in addition to a color marking and signaling of the state, a corresponding spatial change after passing through the wall can be detected. A protruding of the blocking element from the wall then indicates a blockage of the circuit breaker. The Blo ^¬ ckierelement can rest permanently in a recess of the wall. As the blocking element passes through the wall, a portion of the blocking element emerges. This protruding portion that was previously hidden by the wall may have the status display on ^¬. For this purpose, the projecting section can be provided with a corresponding color and / or alphanumeric marking as status indication. The label may also be made by an attached icon, such as a geschlosse ^¬ nes castle. A further advantageous embodiment can provide that the further switching device is a grounding switch.

Circuit breakers are used to turn on or off an electrical current path. When switched off, It may advantageously be provided that individual ^{sections of} the current path are to be subjected to ground potential. By means of a corresponding earthing switch grounding can be made. The other switching device may only switched in the disconnected position of the circuit breaker who ^¬ . By blocking element is mög ^¬ Lich simply to avoid faulty operation of the further switching device and allow grounding via the further switching device only when switched off the circuit breaker. The earthing switch can be constructed as an open-circuit grounding switch, ie in the atmospheric environment, an electrically conductive connection between a grounding point and a connection point of the circuit breaker is made. For example, the grounding switch can have a pivot axis about which a grounding rod is set in pivoting motion, together with the grounding rod

Pivoting the pivot lever is done.

Furthermore, it can advantageously be provided that the performance has tung switch a plurality of switch poles, each having at least one drive lever which ste ^¬ hen and only one of the drive lever of the switching poles, a blocking element is associated with each other. A use of multiple switching poles allows, with a

^Circuit breakers, for example, multi-phase electric power ^¬ to switch transmission systems. This requires the interrup ^¬ chung example of several, in particular three electrical ^¬'s current paths that belong to a common multi-phase electrical power transmission system. It must be ensured that the individual current paths are stale ^¬ tet at least in a timely manner at the same time broken into ^¬ special respectively. The individual switching poles of a circuit breaker have a substantially similar structure. At least each of the circuit breaker is associated with a separate drive lever, which couples a respective movement in the respective encapsulation of the interrupter unit of the respec ^¬ gene Schaltpols via a rotatably mounted shaft. The individual drive levers can be coupled together, so that a synchronized movement of the drive lever takes place with each other. The coupling of the drive lever can be such a rigid (for example via coupling rods) suc ^¬ gen that when blocking one of the drive lever further movements of the other connected to this one blocked drive lever drive lever are prevented. Thus, it is possible to prevent unwanted movement of the switching contacts even at a circuit breaker with multiple switching poles by the use of a single blocking element at all switching poles. Similarly, Move can ^¬ parts of the further switching device switching a plurality of poles to be coupled under ^¬ each other, provided that the further switching device is designed just ^¬ if more poles. Furthermore, it can be advantageously provided that the circuit breaker has a traverse with a substantially U-shaped cross section, wherein the blocking element is mounted within the bounded by the U-shaped cross section contour.

A Traverse can serve as a chassis for the circuit breaker, on which all essential components are supported. Thus, the individual modules can be positioned and fixed relative to each other. By using a U-shaped cross-section of the cross member is made sufficiently stiff traverse angle is available at a reducer ^¬ th amount of material. If now the blocking element is mounted within the contour bounded by the U-shaped cross section, then the blocking element is located with its position. tion within a mechanically protected space, so that influences acting on the environment are at least substantially kept away from it. Furthermore, it can be advantageously provided that switching poles of the circuit breaker are placed on the crossbar.

If one sets the switching poles of a circuit breaker on the traverse, it is possible in a simple manner to adjust the position and mobility of the blocking element relative to the position of the switching poles of the circuit breaker and auszurich ^¬ th. Furthermore, the other switching ^{¬ device} can be placed on the traverse be. Thus, for example, it is possible to mount a parallel to the direction of movement of the blocking ^¬ aligned rotatable shaft of the other switching device on the crossbar, wherein at one end of the rotatable shaft a grounding rod is arranged radially to the axis of rotation and the grounding rod together with the pivot lever about the axis of rotation the wave can be pivoted around.

In the following, the invention is shown schematically with reference to a Ausführungsbei ^¬ game in a drawing and described in more detail below. It shows the

Figure 1 is a perspective view of a power ^{scarf ¬} age with another switching device, Figure 2 is a section through the figure 1 in the direction II-II, the

3 shows a section through the figure 1 in the direction III-III, the Figure 4 is a perspective view with the section III ^¬ III, a drive lever of the circuit breaker is ment in a first release area of a blocking element, a pivot lever further

Switching device is located in a second blocking region of the blocking element, the

Figure 5 is a similar view as Figure 4, wherein the

Blocking element is freely movable, the

Figure 6 is a similar view as Figure 4, wherein the pivotable drive lever is located in a first Blo ^¬ ckierbereich and the pivot lever is located in a second release area of the blocking element and the

FIG. 7 shows a pivoted lever pivoted into the second release region of the blocking element.

Figure 1 is a perspective view of a power switch ^¬ removable. The circuit breaker has a

Switching pole A, a switching pole B and a switching pole C on. Each of the three switching poles A, B, C is used for interrupting or for producing a current path. In the present case, the three switching poles A, B, C are designed similarly and serve to switch a polyphase current path within a polyphase electrical energy transmission system. Since the three switching poles A, B, C are constructed identically, the structure of a switching pole of the circuit breaker will be described below by way of example with reference to the switching pole A.

The switching pole A has a base 1. The base 1 is, for example, a metal cast body, which Positioning the entire switching pole A is used. In the present case, the base 1 is equipped with a collar 1a which radially widens the circumference of the base 1. The base 1 is connected to a traverse 2. For this purpose, the traverse 2 has on its upper cover surface 3 a recess, through which the base 1 projects, the collar 1a delimiting the insertion depth of the base 1 into the recess of the traverse 2. With ^{¬ means} of the seated on the upper top surface 3 collar la of the base 1 on the cross member 2 can be fixed.

The base 1 extends through the upper top surface 3 of the traverse 2 and has at its below the upper top surface 3 lying end a transmission housing 4. The transmission housing 4 can be seen in FIG. The traverse 2 has a substantially U-shaped cross-section, wherein the upper cover surface 3 is arranged at the portion which connects the two side walls of the U together. The gear housing 4 is dimensioned such that this is located within the limited by the U-shaped cross-section contour of the traverse 2. As a result, this part of the base 1 is largely protected against mechanical influences.

On the base 1, an insulating body 5 is arranged. In the present case, the insulating body 5 is rotationally symmetrical and provided on its outside with creepage-extending ribs. The insulating body 5 is designed as a hollow body, the interior of the insulator with electrically iso ^¬ lierendem gas, preferably sulfur hexafluoride is filled. The insulating body 5 is fluid-tight with the base 1 verbun ^¬ the, so that even a space located within the base 1 is filled with the electrically insulating gas. For example, also designed as a transmission housing 4 section of the base 1 with the electrically insulating gas filled. The base 1 and the insulating body 5 are fluid-tightly interconnected and form a fluid-tight enclosure. The encapsulation of the switching pole A is part of an interrupter unit. The interrupter unit has the components of

A switching pole on which serve directly a herstel ^¬ lung / interrupting a current path.

By means of the insulating body 5, a first connection point 6 and a second connection point 7 are led outwards in an electrically insulated and fluid-tight manner. At the two ^¬ connection points 6, 7 are used for connection of electrical supply lines to the switching pole A of the circuit breaker. As electrical lines, for example, overhead cables or the like can be used. Via the two connection points 6, 7, a current path is formed in the interior of the insulating body 5. With the first and the second connection point 6,

7, two relatively movable contact pieces 8, 9 are connected. In the present case, the first contact piece 8 is fixedly arranged in the interior of the insulating body 5 and electrically conductively connected to the first connection point 6. The second

Contact piece 9 is movably mounted. The first contact piece

8 is provided at its end facing the second contact piece 9 with a bush-shaped area, in which the movable second contact piece 9, which is equipped bolt-shaped, is retractable. Thus, a switching point is formed between the ^¬ contact pieces 8, 9, which can be brought by a relative movement between the two contact pieces 8, 9 in a disconnected state and in an on state. The second contact piece 9 is electrically conductively contacted via a Gleitkontaktan- order with the second connection point 7, so that the two contact pieces 8, 9 via the two connection points 6, 7 are einbindbar in a current path. To generate a movement of the second contact piece 9, a drive device not shown in the figure 1 is provided. The drive device is arranged outside of the insulating body 5 and outside the base 1 and, for example, supported by the traverse 2. In the figure 1 is shown by a double arrow 10, the possibility of Einkop ^¬ peins initiated by the drive device movement on an end face of the cross member 2. About the path shown in the figure 1 with the broken solid lines, a movement via the respective gear housing 4 in the interior of the switching poles A, B, C can be coupled. In addition, a coupling of a drive movement at other positions of the traverse 2 is possible. In particular, a drive movement can be coupled in at any switching pole A, B, C and distributed from there to the other switching poles A, B, C. A blocking element 14 should preferably be arranged at the switching pole A, B, C, at which a drive movement is coupled. Furthermore, a further switching ^{device is} arranged on the traverse 2 ^¬ . The further switching device is present as ^so-¬-called outdoor grounding switch configured. The number of switching poles A, B, C corresponding to the Freilufterdungsschal ^¬ ter is also designed three-pole, ie, each of the

Switching poles A, B, C can be earthed via the further switching device. The further switching device has a plurality of switching poles AI, Bl, Cl, which in turn are of similar construction. Therefore, the construction of a switching pole AI of the further switching device will be described in more detail below by way of example. The switching pole AI has a rotatable shaft 11. The rotatable

Shaft 11 is rotatably mounted on the upper deck surface 3 of the traverse 2, wherein the axis of rotation of the rotatable shaft 11 is wind ^¬ obliquely to the axis of movement of the second contact piece 9. In a projection in the direction of the longitudinal axis of the Traverse 2, ie, in the direction of the double arrow 10 and lot ^¬ right to the cross section of the substantially U-shaped profile of the cross member 2, the axis of rotation of the rotatable shaft 11 intersects the axis of movement of the second contact piece 9 at right angles.

With the rotatable shaft 11, a grounding rod 12 is connected rigid angle. The grounding rod 12 extends substantially radially to the axis of rotation of the rotatable shaft 11. Furthermore, a pivotable pivot lever 13 is disposed on the rotatable shaft 11, which is also connected in a rigid angle with the rotatable shaft 11. During a movement of the rotatable shaft 11, the grounding rod 12 and the pivotable one become synchronous

Swivel lever 13 moved. The ground rod 12 is on its the rotatable shaft 11 facing end with earth potential be ^¬ beat. It may be provided that an electrical contact with ground potential via a separate Erdungslei ^¬ processing is performed with the ground rod 12th Such a grounding ^¬ line may be, for example, a flexible copper strip. At the remote from the rotatable shaft 11 free end of the grounding rod 12 is a contact area is located, which can come into electrical contact with either the first connection point 6 or the second connection point 7 depending on the length of the grounding rod 12. For this purpose, a corresponding mating contact, for example, a resilient contact slot or the like is arranged at the respectively provided connection point 6, 7. In a retraction of the contact area of the ground rod 12 in the counter-contact on the first and two ^¬ th connection point 6, 7, a grounding connection from earth potential via the ground bar 12 to the first connection point 6 or the second connection point 7 is given. Accordingly, the at the first and at the second connection point 6, 7 be ^¬ sensitive connection lines are subjected to ground potential. A rotation of the rotatable shaft 11 can be initiated in various ways. For example, a Antriebsele ^¬ ment attack on the end of the rotatable shaft 11, on which no grounding rod 12 is located. However, it can also be provided that the pivotable pivot lever 13 is used for coupling a movement to the rotatable shaft and consequently also to the grounding rod 12. A movement of the waves of the switching poles AI, AI, A3 of the further Schaltgerä ^¬ tes can be synchronized via a mechanical coupling. Thus, it is possible to drive only one of the waves and to transmit a drive movement on the other waves of the other switching poles Bl, Cl via the coupling.

The circuit breaker with its switching poles A, B, C is used to turn on or disconnect a current path within an electrical energy ^¬ transmission network. The measures provided for power transmission connection lines are electrically insulated to arrange and in the regular operating mode to a Erdpo ^¬ tential to keep. Unwanted application of the connection cables with ground potential, especially if they are below rated voltage and carry a rated current, can lead to irreparable damage. Therefore, it is desirable that an operation of the earthing switch only takes place when a certain switching position (preferably a disconnected position / off position) of the circuit breaker is present. Conversely, it is undesirable in a grounding of the connection points 6, 7 via the grounding rod 12 of the further switching device that the circuit breaker suddenly performs a switch-on and it comes to a ground fault.

In order to avoid such faulty circuits, it is provided on the circuit breaker that the drive arrangement is equipped with a blocking element 14. In FIG. 1, part of the blocking element 14 projects through a lateral wall. tion of Traverse 2 through. Operation and function of the blocking element 14 will be described with reference to the following figures. FIG. 2 shows a section through the traverse 2 in the direction II-II. Evident is the substantially U-shaped cross-section of the traverse 2, wherein on the upper deck surface 3, the rotatable shaft 11 of the further switching device is arranged. Recognizable turn is the pivotable pivot lever 13, which is connected to the shaft 11. In the figure 2 is an example of a way of connecting a grounding bar 12 with the rotatable shaft 11 Darge ^¬ represents. Thus, it is provided here that the grounding rod 12 is pressed against one receiving element, which is connected to the rotatable shaft 11, via one or more brackets 15 located axially one behind the other. About the screwable bracket 15 is an easy interchangeability of the grounding rod 12 gege ^¬ ben. Thus, when the grounding rod 12 is worn or when the mating contacts of the first connection point 6 change to the second connection point 7 or vice versa, a shorter or a longer grounding rod 12 can be used. Further, in the Figure 2 of the transmission housing 4 are formed ^¬ portion of the base 1 of the switching pole A can be seen. The gear housing 4 receives in its interior a part of a transmission, which serves to transmit a movement to the second contact piece 9. Above is a Wel ^¬ le 16 passed through a Kapselungswandung the interrupter unit of the switching pole A fluid-tight. For this purpose ent ^¬ speaking sealing rings are provided, so that even with a rotation of the shaft shaft 16, a fluid-tight bond between Kapselungswandung and shaft 16 is given. At the protruding from the gear housing 4 end of the shaft 16, a drive lever 17 is attached. The drive lever 17 is connected at an angle ^¬ rigid with the shaft 16. The drive lever 17 has a fork-shaped receptacle 18, in which a drive ^¬ rod 19 and a coupling rod 20 are used. Via the drive rod 19 is a movement in the direction of Dop ^¬ pelpfeiles 10 of Figure 1 transferable to the drive lever 17th By means of the coupling rod 20, a connection to egg ^¬ nem drive lever of an adjacent interrupter unit in the present case of Schaltpols B and in a similar manner by the Schaltpol B are also transferred to the switching pole C. Thus, the individual drive lever 17, which are assigned to the respective switching poles A, B, C, coupled to each other via corresponding coupling rods, so that an impressed on the drive lever 17 of the pole column A movement via coupling rods 20 on the other drive lever of the other polar columns B, C of the circuit breaker can be transmitted.

Thus, it is possible to apply a common drive unit to ver ^¬ which produces a movement, and this movement can be transferred to all pole columns A, B, C of the circuit breaker.

At the free ends of the side cheeks of the U-shaped cross member 20, a crossbar 21 is attached. The crossbar 21 is penetrated by recesses into which studs 22 are inserted. About the studs 22, a bearing block 23 is supported on the crossbar 21. On the bearing block 23 is

a blocking element 14 slidably mounted. The studs 22 are adjustable by thread on the crossbar 21. Accordingly ^¬ the orientation of the bearing block 23 can be adjusted. So a reliable blocking effect of Blo ^¬ ckierelementes can be adjusted. In particular, positions of stop surfaces are adjustable. The direction of displacement of the transverse element 14 is parallel to the axis of rotation of the rotatable shaft 11 and to the axis of rotation of the shaft 16 of the shaft. drive lever 17 arranged. Furthermore, a control lever 24 is arranged on the bearing block 23, via which a movement can be transmitted to the blocking element 14. FIG. 3 shows a section in the direction III-III shown in FIG. The figure 3 allows a view into the interior of the transmission case 4 and can see a Abtriebshe ^¬ bel 25, which is seated on the shaft 16 in the interior of the transmission housing 4 and transmits a movement of the drive lever 17. About the output lever 25 is a movement ^¬ transmission to the second contact piece. 9

In the figure 3, the bearing block 23 can be seen in a plan view, which has a recess to the blocking element 14 parallel to the axis of rotation of the shaft 16 and parallel to the axis of rotation of the rotatable shaft 11, which is not shown in Figure 3, move can. It can be seen that the blocking element 14 is substantially cuboid in shape, wherein the cuboid has different cross-sections, d. h., In the course of the blocking element 14 is a

Shoulder 26 is arranged, which extends substantially transversely to the axis of movement of the blocking element 14. The shoulder 14 divides the blocking element 14 into a first section 14.1 and into a second section 14.2. Over the shoulder 26 is a sudden cross-sectional reduction of the first section 14.1 given to the second section 14.2. So ^¬ probably the first section 14.1 and the second section 14.2 have a substantially rectangular cross-section with a cuboid structure, wherein the cross section of the first section 14.1 is greater than the cross section of the second section 14.2. Due to the structure of the first and second sections 14.1, 14.2, the blocking element 14 is provided with an L-shaped outline, wherein one of the L-shaped Flanks of the blocking element 14 serves as a bearing surface on the La ^¬ gerbockes 23.

On the bearing block 23, the control lever 24 is rotatably mounted, wherein the control lever 24 is configured in the manner of a two-armed lever. A first lever arm of the two-armed lever is connected to a drive device for the blocking element 14. With the other lever arm of the control lever 24 is guided via a bolt in a gate of the blocking element 14, so that the control lever 24 and the blocking element 14 cooperate in the manner of a crank mechanism. A

Pivoting movement of the control lever 24 is converted into a linear movement of the blocking element 14 Be ^¬ . The backdrop is designed in the manner of a transversely to the direction of movement of the Blockierelemen tes 14 extending slot. About the Koppe ^¬ ment of control lever 24 and blocking element 14, the stroke of the blocking element 14 is limited, so that the Blockierele ^¬ ment 14 from the bearing block 23 can not slide out. In the first section 14.1 of the blocking element 14, a first blocking region 27 is arranged. The first Blockierbe ^¬ rich 27 is in a stop surface, which lies in an L-shaped edge of the blocking member 14, wherein the first blocking region 27 is located with its abutment surface on the side opposite to the supporting surface of the blocking ^¬ element 14 in the bearing block 23 , At the ^¬ operating lever 17 is provided with a stop 17.1, wel ^¬ cher in the present in the Figure 3 position projects beyond the first locking portion 27 and bears against the latter so that a free pivoting of the drive lever 17 through the first

Blocking area 27 is blocked. Such a position of the operating lever 17 at ^¬ can for example advantageously then vorlie ^¬ gen, when the contacts 8, 9 are separated from each other. The circuit breaker is in disconnected position or exhibition.

In the area of the second section 14.2, a first release area 28 is located. Due to the Querschnittsreduzie ^¬ tion therethrough dipping the stop 17.1 of the drive lever 17 is provided in front of the blocking member 14 in the region of the first releasing region 28, so that a Einschaltbe ^¬ movement of the circuit breaker. This would require the BLO ckierelement first in the direction of the arrow 29 moves ^¬ to.

In the area of the second section 14.2, a second release area 30 is furthermore arranged. The second release region 30 is formed by a groove introduced into a stop surface in the L-shaped structure of the blocking element 14. The groove is introduced into the flank, which is opposite to the L-shaped side of the L-shaped blocking element, which serves to slide the blocking element 14 in the bearing block 23. The groove is designed so wide that the width of the pivotable pivot lever 13 is only slightly smaller. After a movement of the rotatable shaft 11 and a pivoting of the pivot lever 30 into the second release area 19, movement of the blocking element 14 is prevented. During a rotary movement of the shaft 11 with the pivotable pivot lever is moved into the second relief region 30 13, the power ^¬ switch preferably is in its disconnected position, wherein a switch-on movement due to the location of the first BLO ckierbereiches 27 in the pivot region of the stop 17.1 of Drive lever 17 is prevented. Thus sicherge ^¬ provides that only when switched off the power switch ^¬ can be done turning on the further switch device. The pivot lever 13 is to ensure a Sper- The circumferential surface of the circular cylinder sector is opposite to the groove bottom and the flanks of the groove of the second release region 30 are opposite to the respective cover surfaces of the circular cylinder sector.

In the second section 14.2 of the blocking member 14 wei ^¬ thermore, attention must arranged a second blocking region 31, wherein the first blocking region 27, the first releasing region 28, the second release region 30 and the second blocking portion 31 in the direction of the path of movement of the blocking member 14 are arranged successively one behind the other. The first blocking region 27 is located in the first section 14.1, and the first releasing region 28, the second Freigabebe ^¬ rich 30 and the second locking portion 31 are located successively in the second section 14.2 of the Blockierele ^¬ mentes. The first release region 28 and the second blocking region 31 have a similar shape, in particular the same cross-section, the first release region 28 and the second blocking region 31 being separated from one another by the second release region 30.

In the state shown in Figure 3, a pivoting of the pivotable pivot lever 13 is in the second release portion 30 of the blocking element 14 allows, ie, in this state, the circuit breaker is in disconnected position and the earthing switch is still in exhibition, wherein when pivoting the rotatable shaft 11 and the attached grounding rod 12 and the pivotable pivot lever 13 of the further switching device this can be brought into its setting. The switch position shown in Figure 3 in a plan view is shown in perspective in ^¬ play, also in FIG. 6 In the following, a switching sequence will now be described with reference to the sequence of FIGS. 4, 5, 6 and 7, in which first the circuit breaker is brought from its switch-on to its off or disconnected position and subsequently an activation of the further switchgear, ie the earthing ^¬ switch takes place.

Figures 4, 5 and 6 are partially freigeschnit ^¬ th to chen a view of the blocking element 14 to enable. For reasons of clarity has been omitted ver ^¬ 19 in Figures 4, 5 and 6 to a representation of the drive rod.

In the figure 4 the position of the drive lever 17 is ones shown, provides, as it is located in the on state of the power scarf ^¬ ters. The stop 17.1 is immersed in the first release region 28 of the blocking element 14, ie, in the position of the blocking element 14 shown in Figure 4, the drive lever 17 is movable from its closed position shown clockwise into its open position (see Figure 5, off position). The pivotable pivot lever 13 is prevented by the position of the second Blockierberei ^¬ ches 31 in its pivot path on a movement, ie, an undesirable circuit of the other switching device (here earthing switch) is prevented. Due to the location of

Shoulder 26 is in the on state of the drive lever 17, a drive of the blocking element 14 via the control lever 24 only to a limited extent possible, since the shoulder 26 strikes against the stop 17.1 of the drive lever 17 and so a movement of the second release area 30 in the region of the pivoting plane of the pivotable pivot lever 13 verhin ^¬ changed. In the figure, between the shoulder 26 and the stop 17.1 of the drive lever 17 in the direction of movement sensitive space to illustrate the operation überdi ^¬ dimensioned shown.

To chen to enable a switching operation of other switching device, now the drive lever 17 from the Einschaltstel ^¬ development of the circuit breaker is to spend in the disconnected position of Leis ^¬ processing switch. For this purpose, the drive lever 17 is pivoted clockwise. The stop 17.1 of the drive ^¬ lever 17 releases the path of movement of the stop 26 of the BLO ckierelementes 14, so that the first blocking portion by a movement of STEU ^¬ erhebels is brought into the pivot region of the stop 17.1 of the driving lever 17 27 24 (Fig. 5 ). During the movement of the blocking element 14, furthermore, the second blocking region 31 of the blocking element 14 is active with respect to the pivotable pivoting lever 13, so that a securing of the further switching device is provided even during a movement of the blocking element 14.

6 shows the completion of the in the figure 5 incipient the movement of the blocking member 14. The stop 17.1 be ^¬ is found in the region of the first locking region 27 of the blocking member 14, that is, a movement of the drive lever 17 with its stop 17.1 is by the Blocking element 14 prevents with its first blocking region 27. The second release area 30 is located in the pivoting range of the pivotable pivot lever 13, ie, a rotational movement of the rotatable shaft 11 with the pivotable pivot lever 13 is made possible by immersion of the pivot lever 13 in the second release area 30. The second locking portion 31 projects beyond a wall of the cross member 2, and can image through an appropriately colored marking or labeling a Blo ^¬ ckierstellung of the circuit breaker (see FIG. 2). FIG. 2 depicts the state of FIG. 6 from a different perspective. Due to a blockade of the movement of the drive lever 17, the circuit breaker located in disconnected position is no longer switchable even in an attempt to move the kinematic chain of the circuit breaker.

FIG. 7 shows an external view of the cross member 2, the blocking element 14 with its second blocking region 31 ^projecting through a wall of the cross member and the pivotable pivot lever 13 being immersed in the second release region 30. The ground rod 12 is retracted with its Kontaktbe ^¬ rich in the associated mating contact of the first or second connection point 6, 7 of the switching pole A. ^¬ on the basis of the circular cylindrical segment form of the pivotable rocking lever 13 a movement, during a switching movement, and after reaching the switched-on of the further switching device, here the Erdungszustan ^¬ of a movement of the blocking element 14 is already prevented to Begin. Since such a movement is prevented, and the first blocking region 27 can not be moved out of the pivoting range of the stop 17.1 of the drive lever 17, so that a reliable prevention of a circuit of the power ^¬ switch is given via the blocking element 14. When the further switching device is switched off, ie when the earthing function of the same is canceled, the sequence of steps shown in FIGS. 7, 6, 5 and 4 is reversed. In the ON state each one of the devices (the circuit breaker or the other switching device) is the other device (ie the other switching device or the

Circuit breaker) is blocked at a switching movement via the blocking element 14. Such a configuration of a drive arrangement is particularly suitable for use of a circuit breaker with disconnecting function, ie, the circuit breaker performs both the switching tasks true, ie, it interrupts nominal and operating currents up to short-circuit currents and over ^¬ takes in the off state, a reliable

Isolation function of the switching path. In the separated state of the relatively movable contact pieces 8, 9 can be secured via a reversal of the control lever 24, the disconnected position of the circuit breaker and an unintentional switching on ^{¬ of} the circuit breaker are mechanically prevented.

However, it can also be provided that the control lever 24 is moved, for example, depending on the switching state of other devices. These further units can ^¬ example, be a separate isolating switch, or other switching devices, wherein the switching state is displayed by the position of the control lever 24th

Claims

claims

1. Drive arrangement of a circuit breaker with schwenkba ^¬ rem drive ^lever (17) and with a blocking element (14) with a in a pivoting range of the drive lever (17) hineinbewegbaren first blocking region (27) and with a first release region (28) for the pivotable drive lever (17 )

d a d u r c h e c e n c i n e s that

the blocking element (14) has a second release region (30) and a second blocking region (31) for a pivotable pivot lever (13) of a further switching device.

2. Drive arrangement according to claim 1,

d a d u r c h e c e n c i n e s that

the drive lever (17) is pivotable about a first pivot axis and the pivot lever (13) is pivotable about a second pivot axis and the two pivot axes are aligned substantially parallel, wherein the blocking element (14) is displaceable substantially parallel to the pivot axes.

3. Drive arrangement according to claim 1 or 2,

d a d u r c h e c e n c i n e s that

the first blocking region (27) is arranged in a first stop surface and the second blocking region (31) is arranged in a second stop surface, wherein the two stop surfaces are arranged at an angle, in particular at right angles to one another.

4. Drive arrangement according to claim 3,

d a d u r c h e c e n c i n e s that

the two stop surfaces abut each other and limit a body edge of the blocking element (14).

5. Drive arrangement according to one of claims 1 to 4, d a d u c h e c e n e c e s in that e

the blocking element is a profiled bar.

6. Drive arrangement according to one of claims 1 to 5, d a d u r c h e c e n e c e s in that e

the blocking element (14) is driven in the manner of a crank mechanism by a pivoting control lever (24).

7. Drive arrangement according to claim 1, wherein:

the blocking element (14) has a shoulder (26) which subdivides the blocking element (14) into a first and a second portion (14.1, 14.2), wherein the first portion (14.1) has a larger cross section than the second Ab ^¬ cut ( 14.2) and the first blocking region (27) in the first section (14.1) and the second blocking region (31) in two ^¬ th portion (14.2) are located.

8. Drive arrangement according to claim 7,

d a d u r c h e c e n c i n e s that

the second release region (30) is located in the second section (14.2) and has a reduced cross section with respect to the cross section of the second section (14.2).

9. Drive arrangement according to one of claims 7 or 8, d a d e r c h e c e n e c e s in that e

the first release area (28) is located in the second section (14.2).

10. Drive arrangement according to one of claims 1 to 9, characterized in that the drive lever (17) is supported by a shaft (16) which projects through a fluid-tight encapsulation wall of a breaker unit of the circuit breaker.

11. Drive arrangement according to claim 1, wherein a

the pivot lever (13) is shaped in the manner of a sector of a Kreiszy ^¬ Linders.

12. Drive arrangement according to claim 1, wherein:

on the blocking element (14) a status display is arranged.

13. Drive arrangement according to claim 12,

d a d u r c h e c e n c i n e s that

the blocking element (14) with the status indication by a

Wall is moved through.

14. Drive arrangement according to claim 1 to 13,

d a d u r c h e c e n c i n e s that

the further switching device is a grounding switch.

15. Drive arrangement according to one of claims 1 to 14, d a d u c h e c e n e c i n e that t

having the circuit breaker a plurality of switching poles (A, B, C) each ^¬ weils at least one drive lever (17) which communicate with each other (20) and only one of the drive lever (17) of the switching poles (A, B, C) a Blockierele - ment (14) is assigned.

16. Drive arrangement according to one of claims 1 to 15, characterized in that the circuit breaker has a traverse (2) with a substantially U-shaped cross-section, wherein the blocking element (14) is mounted within the contour bounded by the U-shaped cross section.

17. Drive arrangement according to claim 16,

d a d u r c h e c e n c i n e s that

Switching poles (A, B, C) of the circuit breaker are mounted on the crossbar (2).