WO2010121588A2

WO2010121588A2 - Frame and a control cabinet composed of the frame

Info

Publication number: WO2010121588A2
Application number: PCT/DE2010/000418
Authority: WO
Inventors: Andreas Huck
Original assignee: Elcos Gmbh
Priority date: 2009-04-20
Filing date: 2010-04-13
Publication date: 2010-10-28
Also published as: WO2010121588A3; DE102009017834A1

Abstract

The invention relates to a frame (1) and to a control cabinet for high-voltage power systems installed thereon. In order to achieve high strength and a high load-bearing capacity of the frame (1) with low expenditure and be able to implement virtually arbitrary dimensions within a short time, beams (2, 3) are provided, which comprise outer beams (2a, 3a) having an open profile. The open region of the outer beam (2a, 3a) directed inwardly is covered by an inner beam (3a, 3b) and connected thereto by a riveted joint, which rests against two sides of the outer beam (2a, 3a) on the outside and comprises at least one angle bracket (6, 7) serving as a supporting surface for a wall surface (4, 5). The angle brackets (6, 7) are set back such that the wall surfaces (4, 5) resting against them on the outside are disposed recessed with respect to a parallel outside of the outer beam (2a, 3a).

Description

Frame and a built-up from the frame control cabinet

The invention relates to a frame for a particular particular for heavy-current power plants control cabinet. Furthermore, the invention relates to a built-up frame of a control cabinet.

5 Such a control cabinet is made in practice according to exact customer specifications as a welded construction to reliably absorb the forces released in a fault, especially due to the evaporating in an arc conductor material, and to exclude a risk to the environment safely and reliably.

The DE 10 2006 010 012 B3 relates to a control cabinet with trim parts and at least one mounted on the cabinet body by means of hinges cabinet door, which has a door frame of two vertical profiles and two horizontal profiles and these connecting corner pieces. It is provided that the vertical profiles and the corner pieces are provided to the outside of the door frame with a flush merging, the front i5 projecting respective hump-shaped bearing portion which serves as a bearing of the respective hinge with arranged therein rotation axis. With these measures, essential functions of the door frame are shifted into the corner pieces, so that the profile sections of the door frame require no elaborate processing and assembly is favored. For stable, clear insertion of the relevant hinge sections

.0 is advantageously provided that the hinge receptacles are formed as recesses of the corner pieces on a side remote from the frame outside. For a simple structure, the measure contributes that a hinge part is formed in the corner piece. A simple construction of the door frame and the hinge is further facilitated by a hinged part connected to the cabinet body journals

15, which are rotatably mounted in the corner piece. From DE 101 20 738 C1, a control cabinet with a sectional steel framework is known in which mitred side frames are connected via cross members. By grading the miter edges support surfaces are formed for the frame profiles.

From DE 195 29 270 C1, a corner connecting element for a control cabinet is known, which has two legs, which engage in sections in longitudinal and transverse beams of a frame. The legs are connected by a connecting block, wherein between the hollow sections of the frame and the connecting block, a smooth transition is made. On the connection block, an o third leg can be releasably secured, for example, to defer a depth beam.

DE 10 2007 028 008 A1 relates to a frame for a control cabinet, which has profiled frame parts, which are assembled using at least one corner connector. The corner connector has two perpendicular to each other

5 thighs up. The frame part is formed so that the two legs of the corner connector completely submerge in two adjacent frame parts and the corner connector is enclosed by the frame parts on the outside of the frame. The profile of the frame part may be a square profile with an open corner and an end portion adjoining the open corner, the end portion being parallel to

! 0 may be one of the open corner adjacent end portion of the square profile.

A cabinet in the form of a housing is given in DE 36 38 407 A1. In this case, a transparent pane is surrounded as a door leaf by a frame with vertical and horizontal frame profiles, which are held together by means of corner pieces. At the 5 corner pieces of a vertical side outwardly to the side protruding hinge forks are mounted as hinge parts, engage in the mounted on the housing body counterparts of the hinge. Due to the outwardly projecting housing parts results in an irregular outer contour.

EP 0 818 861 A1 discloses a control cabinet in which a door likewise has a transparent door leaf with a frame formed from horizontal and vertical frame profiles which are held together by means of corner pieces. Here, in the corner parts separate hinge parts are used with on the remote from the front of the cabinet back of the door protruding hinge bearings.

I5

In DE 40 22 079 A1 a control cabinet is shown with a folded in the edge regions door leaf, in the edge region of the door separate hinge parts are placed over protrude the front plane and are fastened from the back by means of mounting elements.

Another cabinet is specified in DE 28 47 994 C2. The profile parts forming the door frame 5 are mitred in the corner regions and assembled by means of corner connectors in order to brace the frame profile sections against one another. No further details are given on the corner connectors.

Furthermore, DE 10 2007 048 640 A1 relates to a control cabinet for receiving o retractable and withdrawable electronic system components with a housing consisting of vertical and horizontal profile struts with attached side walls, floor, ceiling wall and rear wall or door and a front door.

Starting from the above-described prior art, the invention is the

It is an object of the invention to enable a modular construction of such a frame, which can be produced at the same time with little effort and has a high strength and load capacity. In particular, the frame should in almost any

Dimensions can be realized within a short time. Furthermore, the invention is the

Task on which a built up on this principle of a frame

! 0 to create a control cabinet.

The first object is achieved with a frame according to the features of claim 1. The further embodiment of the invention can be found in the dependent claims.

! 5

According to the invention, therefore, the frame has a substantially vertical spar at least comprising an outer spar with an open, a rectangular basic shape having profile, wherein an open, inwardly facing area covered by an inner spar and connected thereto by riveting, which against two sides ιo of Outer spar rests on the outside and at least one serving as a support surface for example designed as a wall surface side wall serving, in particular rectangular angled, wherein the bend including the outside abutting wall surface against a parallel outer side of the outer spar is recessed. Due to the modular construction of all the spars and the framework thus created, this can easily be changed in any axial direction, in particular in prefabricated steps, by 100 mm in each case. Each spar consists of two mutually riveted sheet metal parts, which in an advantageous manner all fixing elements for the attachment of the other elements of the cabinet, in particular strength-giving components of the frame, but also overarching elements, such as connecting elements between two defined by the control panels fields are present. The invention is based on the recognition that then a high load capacity of the spar can be realized in a simple manner, when the inner spar closes the open profile of the outer spar and thus gives the spar a tubular closed cross-sectional shape. In this case, the inner beam forms by its deflection at the same time the support for a wall surface, so that no additional guides are required for their fixation, wherein the wall surface does not extend approximately in a common plane with the corresponding side of the outer profile, but rather opposite to the optimum application of force under external load this is set back. In practice, a return between 0.1 and 1 cm has proven useful in order to achieve the desired force introduction.

The inner spar on both sides of its contact surfaces on the outer spar preferably each have a bend so as to accommodate, for example, two side walls. According to another advantageous embodiment, in which the inner spar only has a contact surface for a single wall surface, the frame has a closing mechanism for a pivotally mounted door, which covers the outer profile over the entire surface and thus in an extension of a door facing away, fixed to the spar side wall is positioned in the closed position.

Preferably, the door forms an inwardly extending from the main extension plane of the door in particular at right angles inwardly extending bend parallel to a contact surface of the inner spar to the outer spar and includes a small gap. As a result, the load capacity is further increased by the door is supported in a deformation by means of the bend directly on the spar, which thus counteracts further deformation as an abutment.

A particularly advantageous embodiment of the present invention is also achieved in that the closing mechanism is designed to transmit a parallel to the main extension of the side wall extending effective direction of the closing force. As a result, the forces arising during a load of the frame and the door cancel each other, so that the door is reliably held in the closed position even with a comparatively large external force. For this purpose, a variant of the invention, in which the closing mechanism has a Holm penetrating, parallel to the wall surface strike plate is suitable. By means of the strike plate, the door is locked by a uniform, clockwise circumferential closed position, wherein the strike plate is secured to one of the side wall or 5 door associated Schließblechaufnahme by undercuts and thus has a high load capacity.

In principle, the spar can be constructed modularly from different shaped parts. Particularly promising, however, is an embodiment in which the outer spar o and / or the inner spar consist of triple angled sheets. While the outer spar is angled three times in the direction of the same side, the inner spar has three pointing in opposite directions bends, whose at least one outer bend serves as a support surface.

It is advantageous if the spar has a substantially square basic shape and due to its symmetrical side surfaces allows a further simplified modular construction of a reduced number of different components. At the same time this results in a matching load capacity acting from different directions external forces.

»0

Of course, in the production of the spar different materials can be used, the advantageous properties can be optimally combined. On the other hand, it is particularly practical if the outer spar and the inner spar are made of the same material and the same material thickness, in order to create the conditions S for trouble-free production and a simple structural design.

The connection of the outer spar and the inner spar with each other and with the wall surface could be realized by screws. In contrast, it is particularly advantageous, however, if the connection is made by blind riveting. As a result, lo is not only a fast and highly resilient connection of the elements allows, but also achieves a high, reproducible fit and thus manufacturing quality.

The frame contains essentially bearing structural elements and planar i5 elements. Preferably, the wall surface comprises at least one side wall,

Back wall, ceiling and / or floor surface, which in different sub-areas have different dimensions or properties and thus can be easily adapted to different requirements.

In addition, according to another promising modification, the wall surfaces can be incorporated into the construction as strength-increasing elements, and consequently the wall surfaces can at the same time have supporting and reinforcing properties.

The second object, namely to create a built according to this principle of a rack control cabinet is achieved by a control cabinet with a frame, with an outer spar with an open, a rectangular basic shape having profile, with an open, inwardly facing portion of the outer spar covered by an inner spar and connected thereto by riveting, which rests against two sides of the outer spar outside and at least serving as a support surface for a wall surface, in particular rectangular angled, wherein the bend including the outside abutting wall surface against a parallel outside of the outer spar springing back is arranged. By the inner spar closes the open profile of the outer spar, a high load capacity of the spar is realized in a simple manner. In this case, the inner spar forms at the same time the support for a wall surface, which is arranged offset back relative to the outer surfaces of the outer spar, so as to prevent possible damage and to increase the load capacity by its deflection. As a result, a greater strength is achieved with unchanged material thickness in particular through targeted reinforcements. The rivet connection between the outer spar and the inner spar in practice leads to a self-reinforcing of the connection by an overpressure in the interior of the cabinet, a force closing the rivet connection, in particular the rivet head against the profiles or the wall surfaces can be used. At the same time the dimensional accuracy of the riveted joint is improved compared to welded joints. In this way, therefore, the control cabinet is made in a modular system by standardized profiles assembled as needed and connected by the rivet connection. For example, U-profiles are connected to a closed spar, while still elbows can be connected to a spatial angle element.

The invention allows for various embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below.

This shows an inventive frame 1 for a cabinet. The

Frame 1 consists of bars 2, 3 and wall surfaces 4, 5, wherein each spar 2, 3rd in turn made of different angle profiles formed by outer beams 2a, 3a and inner beams 2b, 3b. Each outer spar 2a, 3a has an open, rectangular basic shape, wherein the open, inwardly facing region of the inner spar 2b, 3b is closed. The inner spar 2b, 3b bears against the outside on two sides of the outer spar 2a, 3a and has at least one right-angled 6, 7 serving as support surface for the wall surface 4, 5, the bend 6, 7 including the outer wall surface 4, 5 opposite a parallel outer side of the respective outer spar 2a, 3a is arranged to spring back. For permanent fixation is a not shown rivet connection. The accessibility allows a pivotable about a hinge, not shown, door 8, which faces away from the hinge door portion 9 abuts against the spar 3, wherein a projection 13 extends parallel to the inner spar 3b. An arranged on the frame 1 closing mechanism 10 has a the spar 3 and a reinforcing profile 11 of the door 8 penetrating, parallel to the wall surface 5 strike plate 12 so that even large forces can not lead to an unwanted cracking of the door 8.

Claims

1. Frame (1) for a particular for heavy-current power plants specific control cabinet, characterized by a particular vertical bar (2, 3) with an outer spar (2a, 3a), which is formed by an open, a rectangular basic shape exhibiting profile, and with a Inner spar (3a, 3b), wherein an open, inwardly facing portion of the outer spar (2a, 3a) of the inner spar (3a, 3b) covered and connected thereto by riveting, wherein the inner spar (3a, 3b) against two sides of the outer spar (2a, 3a) rests on the outside and at least one serving as a support surface for a wall surface (4, 5), in particular rectangular angled portion (6, 7), wherein the angled portion (6, 7) including the outside abutting wall surface (4, 5) is set back against a parallel outer side of the outer spar (2a, 3a).

2. Frame (1) according to claim 1, characterized in that the frame (1) has a closing mechanism (10) for a pivotally mounted

'Door (8).

3. Framework (1) according to claim 2, characterized in that the door (δ) has an inside opposite the main extension plane of the door (8) in particular at right angles inwardly extending projection (13) parallel to a contact surface of the inner spar (3b).

4. Frame (1) according to claim 2, characterized in that the closing mechanism (10) for transmitting a closing force with a parallel to the main extension of the wall surface (5) extending effective direction is executed.

5. Frame (1) according to claim 2 or 4, characterized in that the closing mechanism (10) has a spar (3) penetrating, to the wall surface (5) parallel to the closing plate (12).

6. Framework (1) according to at least one of the preceding claims, characterized in that the outer spar (2a, 3a) and / or the inner spar (3a, 3b) consist of a threefold angled sheet metal.

7. Frame (1) according to at least one of the preceding claims, characterized in that the spar (2, 3) has a substantially square basic shape.

8. Frame (1) according to at least one of the preceding claims, characterized in that the outer spar (2a, 3a) and the inner spar (3a, 3b) consist of the same material and / or the same material thickness.

9. Frame (1) according to at least one of the preceding claims, characterized in that the riveted joint is produced by blind riveting.

10. Frame (1) according to at least one of the preceding claims, characterized in that the wall surface (4, 5) comprises at least one side wall, rear wall, ceiling and / or bottom surface.

11. Framework (1) according to at least one of the preceding claims, characterized in that the wall surfaces (4, 5) are included as strength-increasing elements in the construction.

12. Switchgear cabinet with a vertical rail (2, 3) having a frame (1) with an outer spar (2a, 3a), which is formed by an open, a rectangular basic shape exhibiting profile, and with an inner spar (3a, 3b) , wherein an open, inwardly facing portion of the outer spar (2a, 3a) of the inner spar (3a, 3b) covered and connected thereto by riveting, wherein the inner spar (3a, 3b) against two sides of the outer spar (2a, 3a ) on the outside and at least one serving as a support surface for a wall surface (4, 5), in particular rectangular angled portion (6, 7), wherein the angled portion (6, 7) including the outside abutting wall surface (4, 5) against a parallel outside of the outer spar (2a, 3a) is arranged to spring back.