DE20303064U1 - Stacked add-on assembly for e.g. distribution cabinet, includes base, body, top module, sidewalls, back wall, door and lifting eye - Google Patents

Abstract

The assembly includes a new base (2) new body (3) and new top module (50). The body (3) is clad with sidewalls (8) a back wall (11) and at least one door (4a, b) and at least one lifting eye (12).

Description

Applicant: Berthold Sichert GmbH

Our file: 57367 AL/US

Slip-on distribution cabinet I. Area of application

The invention relates to a distribution cabinet which is generally set up outdoors and accommodates the technical, e.g. electrical or optical distribution systems for e.g. low-current systems, for example telephone systems, with associated power supply devices and cable connection devices for a specific spatial area.

II. Technical background

In addition to sufficient structural stability and resistance to vandalism, etc., such distribution cabinets must now meet other requirements. For example, excessive electromagnetic radiation must not be emitted into the environment, and for use in warmer countries in particular, the temperatures inside the distribution cabinet must not rise too high despite the heat-emitting electrical components housed there, but must also not fall too low.

Such distribution cabinets are generally made either from metal or from plastic, with plastic combining the advantage of being cheaper to manufacture with the advantage of being an electrically non-conductive material, so that even if the housing of the distribution cabinet is accidentally contacted by an electrical component, there is never any danger of the person concerned receiving an electric shock if the housing is touched from the outside.

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As far as the adequate cooling of such distribution cabinets is concerned, it is already known that cooling can be achieved by means of air circulation. For this purpose, the walls of the body are designed with double walls, whereby the ambient air can circulate in the space between the walls, i.e. enter at the bottom and exit at the top, which on the one hand causes the interior to be heated by sunlight and on the other hand causes heat to be dissipated on the inner wall, which is heated by the electrical components in the main room.

In addition, modern distribution cabinets are designed to be EMC-tight, so that electromagnetic radiation can only occur to the outside within the specified limits.

Such distribution cabinets are sometimes located on private property, but often also on public property, so that the local authority must grant permission to set up such a distribution cabinet. As long as the telecommunications companies were also in state hands, this hardly caused any problems, but with increasing privatization, the public sector refuses to set them up or demands a fee for the installation, not to mention the fact that a permit procedure has to be completed and is very time-consuming.

This problem arises with all new distribution cabinets, especially in new development areas, or when the space in an existing distribution cabinet for technical, especially electrical, installations is exhausted and another distribution cabinet would have to be placed next to it for expansion.

Another technical problem arises when replacing an existing distribution cabinet for technical reasons, for example when the body of an existing distribution cabinet has to be replaced to improve EMC tightness or cooling options.

It should be noted that a distribution cabinet is usually built on a base buried deep in the ground, usually made of concrete, but more recently also of plastic, into which the underground cables leading to and from the distribution cabinet are inserted from below, and onto which the usually existing mounting frame, to which the technical, particularly electrical, components are attached, is screwed, as is the surrounding body. The body is - particularly in the case of the aforementioned double-shell construction with regard to the inner body - either made of panels that are firmly connected to one another, or of a body frame,

&iacgr;&ogr; which is closed by means of planking. The outer body is placed on such an inner body by means of planking at a distance to the outside.

III. Description of the invention

a) Technical task

It is therefore the object of the present invention to provide a kit for replacing, in particular enlarging, the body of a distribution cabinet, the replacement of which is unproblematic and in which the distribution cabinet remains in its original location and thus no new installation permit or building permit is necessary.

b) Solution to the task

This object is solved by the features of claim 1. Advantageous embodiments emerge from the subclaims.

By putting a new base and also a new body over the old interior of the control cabinet after removing the old body, i.e. leaving the old base in its position and the transmission technology built on it, i.e. the technical, especially electrical functional parts, there is no interruption in the network, i.e. switching off the

technical, especially electrical functional elements, inside the control cabinet.

Since the control cabinet remains in its previous position and only the external dimensions of the new body increase to a greater or lesser extent, a new installation permit from the authorities is usually not necessary.

By removing the soil around the base, but preferably not all the way down to the bottom edge of the old base, not only does the old base remain in position, but it is also usually not completely deprived of its stability during the conversion work, so that there is no risk of the stripped old control cabinet tipping over during the work.

However, if necessary, the old control cabinet can be deliberately destabilized at any time - by removing the soil down to the bottom edge of the old base - in order to straighten it again - for example if it is crooked - or to move it slightly from its location. The latter is often necessary, for example, if the old control cabinet was positioned with its back too close to an existing building, garden wall or similar, and it has to be moved a few centimeters away from there in order to put the new control cabinet over it.

By putting on the new base box, which is hollow when viewed from above, preferably in the form of a closed box profile and in particular the base feet, which preferably protrude laterally outwards from the base box, its contact surface is increased so that - despite the smaller installation depth - secure support in the ground is guaranteed.

The base is preferably assembled from the mostly one-piece, but possibly also multi-part base box and the base feet before being put on, whereby the base feet preferably consist of base foot side parts and a base foot plate that is continuous on each side and thus for two side parts.

For transport, the base feet are often already attached to the base box, but rotated by 180° with respect to a vertical axis so that the base foot plate does not protrude outwards beyond the base box. In this transport position, the base can also be used if a new distribution cabinet is being built.

This reduces the transport volume of the base and also allows the parts to be made from the cheapest material available, for example the base foot plates are made from galvanized sheet steel mesh or plastic mesh, while the base foot side parts can be bent sheet steel parts. The base box itself is made from concrete, plastic, metal or a mixture of these materials.

Manufacturing the base foot plates as grid parts and in particular from plastic has proven to be advantageous for several reasons: firstly, the grid shape makes it easy to vibrate and thus level the base exactly horizontally. If this base foot plate is made of plastic, openings and cutouts can be easily made in the plate on site, for example to accommodate cables leading away from the distributor.

After aligning the base, especially horizontally, but also roughly in the lateral distance to the old base, the new body is placed on the new base by lifting the new body using lifting eyes screwed into the body by a crane, in particular the loading crane of the delivery truck, and putting it over the electrical components of the old control cabinet - which have been freed from their old housing - and also over its base from above, as the new base usually does not protrude as far upwards as the old base, so that the new body also overlaps part of the old base in terms of height. As a rule, the further work will require the removal of the outer paneling of the new body, i.e. the outer side walls, rear wall and doors, which may vary depending on the

Size and weight of the new body can be done before or after fitting.

On the other hand, removing the roof module, usually consisting of an upper cover and an upper intermediate part underneath, which sit on the inherently stable main part of the new body, is usually absolutely necessary, since the lifting eyes for attaching the crane are screwed or otherwise fastened into this main part of the new body from above in order to slip it over.

For this purpose, the roof module is only loosely placed on the new body when it is delivered and is not firmly connected to the rest of the body.

After connecting, in particular screwing, the new body to the new base, in particular the lower edge of the new body to the upper edge of the new base, the new body - and thus also the new base already connected to it - is brought to the desired distance from the old base in a horizontal direction, preferably by means of horizontally positioned adjusting screws in the new body.

For this purpose, the body and in particular the body frame of the new body have horizontal cross braces just below the height of the upper edge of the body, on which or through which the adjusting screws can be screwed in from the outside by means of horizontal threaded holes and are supported on the outer surface of the old base.

Preferably, the old mounting frame to which the transmission technology is attached is also detached from the old base, in particular by turning or tearing off the connecting screws, and instead fixed, in particular screwed, to the new body.

This is done, for example, by means of the well-known perforated strips made of metal or plastic, which are screwed to the old mounting frame on the one hand, and

on the other hand, on the inside of the new carcass, particularly on its carcass frame. For this purpose, slot nuts can be screwed into undercut grooves that run along the edge profiles of the carcass frame, particularly on such a carcass frame.

Such a fixation is preferably carried out in the upper area of the old mounting frame and, if necessary, in its lower area. By using the perforated strips, different shapes and positions of the old mounting frame can be attached to the new body.

In addition, EMC tightness is achieved by closing the circumferential gap between the old base and the new body, as seen in the top view, with an EMC seal that acts on the top side of the old base.

If the new body surrounds the old base with only a small gap, this is done by gluing on a strip of metal foil, for example a bitumen strip coated with aluminum foil, which rests with one edge on the top of the old base and with the other edge on the cross braces of the body frame of the new frame running at this height.

If the new body is used to enlarge the interior space for new technical or electrical installations, the larger open area next to the old base is closed off by means of a corresponding plate made of metal or coated with metal.

In the additional interior space, a new mounting frame for accommodating the new electrical components is already present - preferably already connected to the new body and in particular its body frame.

Finally, the new body, which has previously been stripped for better accessibility, is re-planked, i.e. the side walls are attached from the outside, as is the rear wall, and the hinged doors are hung by sliding the

Hinge rod running the entire height of the door from above, which passes through the hinge eyes of the side part as well as the hinge eyes of the door.

In this case, particular care must be taken to ensure that the all-round combined splash-proof and EMC seal arranged in the doors and/or in the housing frame is not damaged. This seal preferably consists of a conventional soft plastic or rubber material, preferably with a hollow cross-section, as a splash-proof seal, and has a metallized

&iacgr;&ogr; or a metal mesh-containing, preferably self-adhesive, film is applied as an EMC seal.

Finally, the roof module is put on, the lower edge of which overlaps the upper edge of the side walls and rear wall in a form-fitting manner. The roof module projects downwards between the housing frame and the outer side wall with safety extensions that have a cross hole. The roof module is secured against lifting when the doors are fully opened by inserting a safety rod from the front in the space between the housing frame and the side wall of the housing in such a way that it penetrates both the holes in the safety extensions of the roof module and the similar safety extensions protruding outwards from the housing frame through corresponding holes in a form-fitting manner. After the doors have been closed and locked, this safety rod is no longer accessible from the outside and cannot be removed, so that the roof module cannot be removed and the side walls and rear wall cannot be unhooked upwards and - provided the lock is not destroyed - the front doors cannot be opened either.

c) Examples of implementation

An embodiment according to the invention is described in more detail below by way of example. Shown are:

Fig. 1: putting on the new base,

Fig. 2: the new base placed over it,

Fig. 3: putting on the inner body,

Fig. 4: the inner body put over, set off and fastened,

&iacgr;&ogr; Fig. 5: the inner body clad on the periphery,

Fig. 6: with additional roof module attached;

Fig. 7: the inner body alone,

Fig. 8: planked with side panels,

Fig. 9: with additional panels at the front and rear in the lower area,

Fig. 10: with additional attached rear wall and front doors,

Fig. 11: with additional roof module,

Fig. 12: in the fully assembled state of the body and

Fig. 13: the base alone.

Before the procedure for fitting the new distribution cabinet is explained using Fig. 1 to 6, its individual parts, namely the new base 2 and the new body 3, are described individually using Fig. 7 to 13, and the different assembly states of the new body 3 are described using Fig. 7 to 12.

Fig. 13 shows the new base 2, which is screwed together from several individual parts:

On the one hand, the hollow, i.e. continuous, base box 2a, which is generally made of plastic, concrete, a mixture of both or another non-rusting material, is supported by base feet 2b, which are attached to the side areas lying outside in the transverse direction 20, the larger transverse extension of the base box 2a, and which are used to support the base box 2a on

&iacgr;&ogr;

the subsoil, which is then removed to the desired height.

The base feet 2b consist of base foot plates 2d preferably made of a self-stable grid, in particular a grid made of galvanized sheet steel with vertical webs or a plastic grid. These have a width that preferably corresponds exactly to the horizontal depth, i.e. width, of the base box 2a and protrude laterally in the transverse direction 20 beyond the base box 2a. When viewed from above, the plates 2d only extend in accordance with the

&iacgr;&ogr; thickness of the side walls of the base box 2a under it, so that the free space in the base box as seen in the top view is not reduced thereby.

In this position, the plates 2d are fastened by means of two approximately triangular side parts 2c each, which are screwed with one of their two right-angled outer edges to the plate 2d, in particular to its upper side, and are connected with the tapered upper region to the base box 2a, thus positioning the plates 2d below the base box 2a and at a distance from it.

The plates 2d serve to enlarge the standing area compared to the base area of the narrow surrounding parts of the one-piece or vertically or horizontally divided, multi-piece base box, which are only narrow when viewed from above, and can theoretically protrude outwards at the front and back instead of on the outer narrow sides in the transverse direction, or on all four sides. The result of an optimally large standing area with only a relatively small amount of excavation required around the old base, however, is achieved by attaching the plates protruding in the transverse direction over the sides of the base box 2a.

Figures 7 to 12 show the increasingly completed construction phases of the new body 3. The inner body has a cubic shape and is inherently stable due to a body frame 16, which is composed of edge profiles 17, which at their ends, especially in the corners of the body frame 16, have

appropriate corner connectors are connected to each other, in particular screwed.

In addition to the edge profiles 17 along the edges of the cube-shaped inner body 21, cross struts 34 run horizontally between the vertical struts in the lower third of the body frame 16, opposite which adjusting screws 13 are also arranged horizontally from the outside to the inside.

&iacgr;&ogr; The adjusting screws 13 are arranged in pairs at a distance from one another on the front and rear cross struts 34 running in the transverse direction, preferably also one in the middle of each of the short cross struts running transversely to the transverse direction 20.

The body frame 16 is closed on the sides, on the back and on the top by - preferably EMC-tight panels, which are preferably in the thickness range of the edge profiles 17, so that only the front, in particular only the area above the cross brace 34, is open, as well as the base area between the edge profiles 17 running around the bottom.

Two screw-in lifting eyes 12 are shown on the upper planking, which can be screwed into upward-facing, top-open internal threads 22 of two diagonally opposite upper corner connectors of the body frame 16 if required, namely for lifting this inner body 21.

In contrast, Fig. 8 shows a state in which the inner body 21 described in this way is already equipped with side walls 8, which are placed from the outside against the side surfaces of the inner body 21 and are positively connected to it by lowering or are fastened in another way.

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Fig. 9 shows a state in which, compared to the equipment according to Fig. 8, a front flap 23 and a rear flap 24 - which, like the side walls 8 and the rest of the paneling, are preferably made of plastic - cover the front and rear lower area of the inner body 21 by also being preferably positively attached to it from the outside or otherwise fastened and thereby closing the area from the cross struts running around the lower third to the lower end of the body frame 16 at the front and rear, whereas the side walls 8 preferably continue over the entire height of the body frame 21.

Fig. 10 shows a state in which the inner body 21 is additionally equipped with a rear wall 11 and front doors 4a, b. The doors 4a, b are hung on the longitudinal outer edges of the front in corresponding hinges as a pivot axis, while the rear wall 11 is in turn attached from the outside by hanging from above or otherwise.

As shown in particular in views 10d and 9d, the rear wall 11 and the side walls 8 are positioned offset outwards towards the inner body 21 at a distance - open at the top and bottom - so that air can flow upwards between them due to the chimney effect.

For the same reason, the doors 4a, b are also double-walled with through openings from bottom to top, whereby the inner wall of the doors 4a, b is preferably designed to be EMC-tight.

Fig. 11 shows the state of the body 3 when it is completed by putting on the roof module 50, which consists of an upper intermediate part 7 and a cover 5, and preferably downwardly projecting extensions 25 for insertion into the remaining body 3, in particular between its inner body 21 and its outer cladding and screwing to the inner body 21, in particular its body frame 16.

Since the roof module 50, when viewed from above, projects beyond the inner body 21 and also covers the rear wall 11, side walls 8 and the doors 4a, b when closed, the fixed roof module 50 - as shown in the final state in Fig. 12 - prevents these parts from being lifted upwards and thus removed from the inner body 21.

Fig. 1 shows the sliding of the base 2 shown in Fig. 13 over the old mounting frame 6 equipped with technical or electrical functional parts and the old base 2' supporting it, to which it is connected via fastening screws 18.

For reasons of clarity, the technical or electrical functional elements that are usually screwed and wired on the old mounting frame 6 are not shown, but only the cable inlets 27 are shown in the base plate 26 of the mounting frame 6. However, the electrical functional parts that are not shown do not protrude laterally beyond the base area of the old base 2' when viewed from above, since they were enclosed by the old body (not shown here) that sat on the outer circumference of the old base 2' before it was removed.

Fig. 2 shows the final position of the new base 2 on the ground after it has been put over it. As Fig. 2b in particular shows, the new base 2 is considerably lower than the old base 2'. Since the ground level, i.e. the normally existing level of the earth's surface, can be seen on the old base 2', the soil around the old base 2', in particular in the transverse direction to the side of the old base 2', is removed to such a depth that the new base 2 with its support plates 2d can be set up in the removed area on the new level 29 thus created, which is selected so that the upper edge of the new base 2 is at the level of the previous ground level 40.

Depending on the immersion depth of the old base 2', this new level can be just below the level of the old base 2' or even above it, as shown in Fig. 2, whereby the new level 29 is preferably selected so that it is above the old level in order to avoid having to completely dig out the old base 2', which reduces the stability of the old base 2' and thus of the old control cabinet during the conversion work.

It is possible to vary the height of the new base 2 by using base side parts 2c of different heights.

The top view of Fig. 2d further shows that the width of the new base as viewed in the top view, i.e. transversely to its transverse extension 20, is only so large that the inner, slip-over free space of the new base 2, i.e. in particular its base box 2a, is just slightly larger than the outer width of the old base 2'.

In the transverse direction 20, the new base 2 can also fit just over the old base 2' or - as shown in Fig. 2 - be significantly larger in order to later create space for a new mounting frame next to the old mounting frame 6. For this reason, the new base 2 is then slipped over the old base 2' so that one of its sides rests close to the lateral (right or left) inner circumference of the new base 2, in particular its base box 2a, and the additional interior space is thus only available on one side of the old mounting frame 6, i.e. in one piece.

After the new base 2 has been set down in this way and aligned horizontally at the correct height, the new body 3, in particular only its inner body 21, as shown in Fig. 3, is slipped over the old assembly frame 6 from above - preferably hanging from a crane hook - so that the latter is completely surrounded by the new inner body 21. The new body 3, in particular its inner body 21, is lowered until it stands on the top of the new base 2 and is then screwed to it using fastening screws 18.

Preferably, when viewed from above, the inner body 21 does not protrude laterally beyond the outer circumference of the base box 2a, as can be seen from Fig. 4 after fastening by means of the fastening screws 18 between the inner body 21 and the new base 2.

Fig. 5 shows the state of the new body 3 analogous to Fig. 10, i.e. with the external panelling attached to the inner body 21 in the form of the side walls 8, the rear wall 11 and the two externally hinged front doors 4a, b. As

&iacgr;&ogr; As the front view of Fig. 5b and the top view of Fig. 5d show in particular, the outer circumference of the new body 3 thus equipped is larger than the outer circumference of the new base box 2a, so that the side walls 8 extend over the entire height of the inner body 21 as well as the base box 2a, and the front flap 23' and the rear flap 24' used cover not only the lower area of the inner body 21, i.e. from the cross struts 34 downwards, but also the part of the new base box 2a located underneath in terms of height.

Fig. 5a also shows the new mounting frame 6a, which is attached laterally to the old mounting frame 6 and then in the inner body 21 of the new body 3, which according to Fig. 4a can be done before the new inner body 21 or the new body 3 is put on or afterwards.

Likewise - in contrast to Figs. 1 to 6 - the inner body 21 can be fitted already planked with side walls, rear wall and front flap as well as rear flap, i.e. in the state shown in Fig. 5.

Fig. 5, in particular Fig. 5c, further shows the fixing of the old mounting frame 6, especially in the upper area - with the new body 3, which is preferably done by screwing a piece of a perforated strip 14, which is preferably made of metal or plastic, the middle area of which is screwed to the upper end of the old mounting frame 6, for example, and the ends of which point diagonally upwards to the front and back are connected to the front and

rear edge profiles 17 of the carcass frame 16 running in the transverse direction 20, preferably by screwing to sliding blocks 17 which can be moved in corresponding undercut grooves along these edge profiles 17.

Fig. 6 shows the final state, i.e. - after the lifting eyes 12 have been removed again - after the roof module 50 has been placed on the top of the remaining new body 3 and connected to it.

LIST OF REFERENCE SYMBOLS

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17

1 Distribution cabinet 25 16 Body frame 2.2' base 17 Edge profile 2a Base box 18,18' Fixing screw 2 B Base foot 19 Metal foil &iacgr;&ogr; 2c Base side part 20 Transverse direction 2d Base plate 30 21 Inner body 3.3' Corpus 22 inner thread 4 door 23,23' front flap 5 Lid 24.24' Tailgate 15 6 Mounting frame 25 Extensions 7 upper intermediate part 35 26 Base plate 8th Side wall 27 Cable inlet 9 Subrack 28 cables 10 vertical longitudinal direction 29 new level 20 11 Back wall 34 Cross braces 12 Lifting eye 40 40 Earth level 13 Adjustment screw 50 Roof module 14 Perforated tape 15 T-slot nut

Claims (15)

1. Kit for a new, slip-on control cabinet unit with - a new base ( 2 ), - a new corpus ( 3 ), - at least one new roof module ( 50 ), - the body ( 3 ) cladding side walls ( 8 ), rear wall ( 11 ) and at least one door ( 4 a, b) and - at least one lifting eye ( 12 ). 2. Kit according to claim 1, characterized in that the kit comprises fastening devices, in particular perforated strips ( 14 ), for fixing the old mounting frame ( 6 ) to the new body ( 3 ). 3. Kit according to one of the preceding claims, characterized in that the kit comprises adjusting screws ( 13 ) for adjusting the distance between the new body ( 3 ) and the old base ( 2 ') and/or the old mounting frame ( 6 ). 4. Kit according to one of the preceding claims, characterized in that the kit comprises a base cladding for the old base, in particular at least one front base cladding. 5. Construction kit according to one of the preceding claims, characterized in that the new base ( 2 ) consists of interconnected, in particular detachably interconnected parts, namely at least one base box ( 2a ) which is hollow in plan view and base feet ( 26 ) arranged underneath, in particular under the side parts of the base box ( 2a ), which protrude in particular laterally beyond the base box ( 2a ). 6. Kit according to one of the preceding claims, characterized in that the base feet consist of base foot side parts ( 2 c) and a base foot plate ( 2 d). 7. Kit according to one of the preceding claims, characterized in that the new body ( 3 ) comprises an EMC shield. 8. Kit according to one of the preceding claims, characterized in that the new base ( 2 ) has a lower height than the old base ( 2 '). 9. Kit according to one of the preceding claims, characterized in that the new body ( 3 ) comprises a body frame ( 16 ) made of profiles ( 17 ), in particular metal profiles, along the edges of the cubic housing, set back inwards, and in particular horizontally extending cross struts ( 34 ) are present at the level of the transition between the old base and the old mounting frame ( 6 ). 10. Kit according to one of the preceding claims, characterized in that the height of the cross struts ( 34 ) relative to the new body ( 3 ) is adjustable. 11. Kit according to one of the preceding claims, characterized in that horizontally penetrating threaded through holes for screwing in adjusting screws ( 13 ) are provided in the front and rear and/or lateral cross struts ( 34 ). 12. Kit according to one of the preceding claims, characterized in that in the struts of the body frame ( 16 ), in particular the struts running horizontally at the top, there are undercut grooves with inserted groove stones ( 15 ), which comprise internal threads for screwing in fastening devices, in particular perforated strips ( 14 ). 13. Kit according to one of the preceding claims, characterized in that the side wall ( 11 ) and/or the rear wall ( 8 ) of the new body ( 3 ) extends over its entire height. 14. Kit according to one of the preceding claims, characterized in that fastening devices, in particular internal threads, are arranged in the upper side of the remaining new body ( 3 ) after removal of the roof module ( 50 ), in particular at at least two corners, for example diagonally opposite one another, in particular in the housing frame. 15. Kit according to one of the preceding claims, characterized in that the kit comprises EMC sealing strips, in particular in the form of a self-adhesive metal foil ( 14 ), in particular aluminum foil, in particular in the form of a bitumen tape coated with metal foil.