DE8631173U1 - Device for optionally coupling a panel crossbar with a cell frame or a circuit breaker drawer - Google Patents

Description

The invention relates to a device for selectively coupling a panel cross member provided with actuating and/or functional elements to the cell frame or the circuit breaker insert of a medium-voltage switchgear.

It is known to use so-called power-holder inserts in medium-voltage switchgear, which can be moved out of a cell in the same way as so-called switchgear carriages and brought back into their working position after repair or inspection work has been carried out, by means of an auxiliary carriage which can be used for a number of such power-holder inserts.

Within the respective cell, such circuit breaker inserts are guided and held in profile rails arranged on both sides. The auxiliary carriage intended for handling these circuit breaker inserts is equipped with corresponding profile rails and can accommodate the respective circuit breaker insert after a corresponding transfer process has been carried out. Within the cell, the circuit breaker insert is moved in the corresponding guide rails by means of a drive that is arranged between this insert and a crossbeam fixed to the cell. Such a drive consists, for example, of a spindle drive, whereby it can be operated by means of a crank that is attached to the corresponding spindle on the front of the cell.

The object of the invention is to design a device of the type specified at the outset with the least possible construction effort in such a way that the drive associated

The cover cross member corresponding to the circuit breaker insert can be taken over from the auxiliary trolley in a simple and safe manner and can be easily and quickly reconnected to the cell frame when the circuit breaker insert is inserted into the respective cell.

This object is achieved according to the invention in that at least one coupling block is fastened in the area of the lateral edges of the panel cross member, that at least two vertical holes spaced apart in the direction of the longitudinal extension of the panel cross member are provided in each coupling block, and that these coupling blocks can be connected in a force-fitting manner by means of reversible pin bolts via one of the two vertical holes to a cell-fixed coupling element and via the other of the two vertical holes to an insertable coupling element.

Preferably, two vertically spaced coupling blocks are provided on both sides, aligned with respect to their bores, the mutual distance between which is approximately equal to the height of the coupling elements that can be inserted between them.

Since the external holes of the coupling blocks are assigned to the cell-side coupling elements and the internal holes of the coupling blocks are assigned to the insertion-side coupling elements, a clear force- and also forcibly locked connection is achieved in both coupling cases, which can be implemented by simply repositioning the associated stud bolts.

It is particularly advantageous for the function that the cell-fixed coupling elements form insertion stops for the cover crossbar and the coupling blocks form retraction stops for the circuit breaker insert, as this results in a mandatory mutual alignment of the interacting vertical holes and thus practically a blind repositioning of the stud bolts is possible.

When the circuit breaker drawer is in the switchgear cell, the cover crossbar is locked to the cell frame using the stud bolts. If the circuit breaker drawer is transferred from the cell to an appropriate auxiliary or lifting truck, the cover crossbar is first coupled to the already withdrawn drawer by repositioning the stud bolts, while simultaneously releasing the lock to the cell frame. The cover crossbar, which is now locked to the drawer, can then be transferred to the auxiliary truck together with the circuit breaker drawer. When a circuit breaker drawer is moved into a cell, the processes are carried out in reverse order.

Particularly advantageous embodiments of the invention are described in further subclaims.

An embodiment of the invention is explained with reference to the drawing, in which:

Fig. 1 is a schematic representation of a medium-voltage switchgear with circuit-breaker drawer and auxiliary trolley, and

Fig. 2 is a schematic, partially broken partial view to explain the locking principle between the cover crossbar and the cell frame or circuit breaker insert.

Fig. 1 shows a switchgear assembly consisting of a cell 1, a circuit breaker module 2 and a cover cross member 3, which serves as a fixed bearing for a spindle 15 with which the circuit breaker can be moved from its disconnected position to the operating position and vice versa. The cover cross member 3 can also have additional operating and display elements.

The circuit breaker is moved within the cell 1 by operating the spindle drive 15 by means of a crank 16. The elements fixed in the cell 1 are of a conventional type and therefore do not require any further explanation.

The circuit breaker drawer is provided with support rollers 14 on the sides, which run in the U-profile-shaped guide rails 5 of the cell.

An auxiliary carriage 4 is used to remove the circuit breaker drawer 2 from the cell 1. This auxiliary carriage is designed in the manner of a lifting truck and has a winch by means of which the receiving rails 6 for the circuit breaker drawer 2, corresponding to the guide rails 5 in the cell, can be adjusted in height in accordance with the arrow shown.

The cover cross member 3 must be locked to the cell frame in the position shown in Fig. 1 in order to be able to move the circuit breaker insert 2 in the required manner via the gear spindle 5. If the circuit breaker insert 2 is moved out of the cell and also taken over onto the auxiliary carriage 4, the lock between the cover cross member 3 and cell 1 must be released and the cover cross member 3 must be fixed in relation to the insert 2.

Fig. 2 shows the locking principle between the cover cross member 3 and cell 1 or insert 2.

Two coupling blocks 7, 7' are attached vertically one above the other and at a distance from one another to the angled side walls 18 of the panel cross member 3, which extend beyond the respective side wall 18 and are provided with vertical holes 8, 9 and 8', 9 ¹ , respectively. These vertical holes lie in a plane parallel to the panel cross member and are spaced apart in the longitudinal direction of this panel cross member so that they can perform coupling functions independently of one another.

A coupling element 11, also in the form of a block, is attached to the cell 1 and is provided with a continuous vertical bore 13.

A coupling element 12, which is again block-shaped and also has a vertical bore 17, is attached to the circuit breaker insert 2.

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The projection of the coupling blocks 7, 7' over the side walls 18 is selected such that when the side walls 18 come into contact with the cell-fixed coupling elements 11, the vertical holes 8, 8 ¹ in the coupling blocks 7, 7 ¹ are aligned with the vertical hole 13 in the coupling element 11. By inserting a pin bolt 10 into these mutually aligned vertical holes, the panel cross member 3 is locked with respect to the cell frame 1.

This pin bolt 10 was previously located in the vertical holes 9, 9' and 17, whereby the panel cross member 3 was locked to the insert, as is necessary when this insert is transferred from the cell to the lifting carriage 4 or is located on this lifting carriage.

After the pin bolts 10 have been moved to the locking position on the cell side, the insert 2 can be moved into its working position via the spindle drive 15 as shown in Fig. 1.

If the circuit breaker insert 2 has to be removed from the cell, it is withdrawn by means of the spindle drive 15 until the insert comes into contact with the coupling blocks 7, 7 ¹ , whereby an alignment is again obtained between the vertical bores 9, 9 ¹ and the vertical bore 17 in the coupling element 12 and now the pin bolts 10 can be repositioned accordingly.

This coupling and locking device ensures simple, problem-free and reliable handling of the cover crossbar when inserting and removing a circuit breaker insert into or from a cell.

Claims (7)

Protection claims: 1. Device for the optional coupling of a cover cross member provided with actuating and/or functional elements to the cell frame or the circuit-breaker insert of a medium-voltage switchgear,
characterized in that in the region of the lateral edges of the panel cross member (3) at least one coupling block (7, 7 ¹ ) is fastened, that in each coupling block (7, 7 ¹ ) at least two vertical bores (8, 9; 8 ¹ , 9 ¹ ) spaced apart in the direction of the longitudinal extent of the panel cross member (3) are provided, and that these coupling blocks (7, 7') can be non-positively connected by means of reversible pin bolts (10) via one (8, 8·) of the two vertical bores to a cell-fixed coupling member (11) and via the other (9, 9 ¹ ) of the two vertical bores to an insertable coupling member (12). MANlTZ MMStERVMHLD HEVN MORGAN · 8000 M(JUCHiN 22 ■ BÖBEto-KOCtf-STRASSE u'TEL (089) 22 «II · TELEX 529672 PATMF · FAX (089) 29 7575 HANNS JORG ROTERMUND !/OOfr STU(TGARt 50 43AD cJWNSTATTJ ■ StELBEHGSTR. 23/25 TEL. 10711) 56 72 6t BAYER VOLKSWAGEN AG HITJNCHEN E«2 700960OtJ'-» ACCOUNT 7270 · POSTAL CHECK: MUNICH 77062-805 BAYER TTFiUSGANK MUNICH BLZ 700202 70 ACCOUNT 578351 BAYER HYPO-U WECHSELBANK MUNICH BLZ 70020001 ACCOUNT 6880119980 2 - 2. Device according to claim 1, characterized in that two vertically spaced coupling blocks (7, 7') are provided on both sides, aligned with respect to their guides (8, 9; 8', 9 ¹ ), the mutual distance between which is approximately equal to the height of the coupling elements (11, 12) which can be inserted between them. 3. Device according to claim 1 or 2, characterized in that the coupling elements (11 _v 12) are also block-shaped and each have a vertical bore (13, 17). 4. Device according to one of the preceding claims, characterized in that the cell-fixed coupling members (11) form retraction stops for the panel cross member (3) and in the stop position the vertical bores (8, 8', 13) are mutually aligned. 5. Device according to one of the preceding claims, characterized in that the coupling blocks (7, T) form retraction stops for the insert (2) and in the stop position the vertical bores (9, 9 ¹ , 17) are mutually aligned. 6. Device according to one of the preceding claims, characterized in that the coupling blocks (Tj T) are arranged on the inside of angled side surfaces (18) of the panel cross member (3) and project with their dome area beyond these side walls (15). 7. Device according to one or more of the preceding claims, characterized in that the pin bolts (10) can be locked in the inserted state.