DE102020004773B3 - Sheet steel housing without welds for power engineering devices - Google Patents

Abstract

The present invention relates to a new housing for power engineering devices, especially for low-voltage distributions, controls and telephony. The housing is completely without welds. The identically designed side walls (3) are connected to the identically designed covers (4). This forms a base frame (5) for the further completion of the complete housing (1). The identical side walls are designed in such a way that the door (6) can be screwed on both at the front and at the back, but a rear wall (7) with or without ventilation elements (8) or a lockable plug-in panel can also be inserted at the back. Finally, a roof (11) bent at right angles as a baking sheet is screwed to the cover (4) with identically designed connectors (12) which are fastened to the inside of the roof (11) via weld bolts (14).

Description

Technical area

The present invention relates to a new type of housing without welds for power engineering devices, in particular for low-voltage distributions, controls and telephony.

State of the art

Transformer stations transform the electricity of the regional distribution network with a voltage of 10 to 36 kV (medium voltage) to the 400/230 volts (low voltage) used in the local network to supply low-voltage customers. This low voltage is fed to the distribution housing, which makes further distribution to the consumer technically possible. this is also done in a simpler way with telephony. The housings are suitable for outdoor installation and have a substructure for fixing in the ground and for routing underground cables.

There are housings for power engineering systems made of plastic, sheet aluminum and sheet steel.

The plastic housings consist mainly of glass fiber reinforced polyester. Although this material has advantages, it is considered to be robust, durable and electrically insulating, but disposal is complex and can only be used as an additive for the construction industry and road management.

Sheet steel housings have the advantage over plastic housings or aluminum housings of high strength, durability and high flexibility in design. Thanks to today's manufacturing options, automatic punching and laser cutting of all bores and cutouts, the execution of multiple edging on ultra-modern, semi-automatic edging, and when using strip-galvanized sheet steel combined with a high-strength powder coating, they can be implemented at short notice, application-oriented, even in small series. Housing combinations designed in this way have no sheet steel cut edges on the outside and are therefore very resistant to corrosion and have a long service life. Practice shows a life expectancy of well over 50 years. Sheet steel is a sustainable and very environmentally friendly material and fits in perfectly with our existing circular economy thanks to its function and demand-dependent flexibility. After dismantling the housing, the parts can be used for a second time after being used for the first time.

• Gehäuse aus Stahlblech sind bekanntermaßen vielfach verschweißt. Die Gehäusebauteile werden aus bandverzinktem Blech gefertigt. Das Verschweißen der Gehäusebauteile muss jedoch sehr sorgfältig erfolgen. Obwohl hierbei bereits Zinkoberflächen schonende Schweißverfahren angewandt werden, wird oftmals mit zu viel Energiezufuhr geschweißt, Unebenheiten werden mit einem Glattschliff beseitigt. Dies jedoch führt zu komplett zinkfreien Flächen unter der Pulverbeschichtung, die dann nach 2 bis 3 Jahren durch Eindringen von Feuchtigkeit abplatzen und zu teilweise großflächigen Roststellen führen.

From the state of the art, we notice the following:

• It is known that housings made of sheet steel are welded many times. The housing components are made from strip-galvanized sheet metal. The welding of the housing components must, however, be carried out very carefully. Although welding processes that are gentle on zinc surfaces are used, too much energy is often used for welding, and unevenness is removed with a smooth finish. However, this leads to completely zinc-free surfaces under the powder coating, which then flake off after 2 to 3 years due to the penetration of moisture and lead to large areas of rust in some cases.

The housing parts of the housing known from the prior art are predominantly composed of different structural elements such as left-right wall elements, doors and roof. The doors usually have external hinges. The doors are locked by means of a two-point lock operated by a swivel lever lock. In the event of an accident on the swivel lever or if the door is pivoted due to unevenness in the floor area, the doors often cannot be opened.

Presentation of the invention

The present invention is primarily based on the object of creating a sheet steel housing without welds for power engineering devices, which eliminates the above-mentioned disadvantages, which has an essentially weld-free upper part of the housing and in which the choice of structural design does not require any welds will.

The inside door ( 6th ) or double door with concealed hinges and the mechanically pressure-resistant locking level when closing the doors, using a swivel lever lock with locking rods leading up and down, the locking takes place in such a way that the ends of the rods are in the locking bracket, placed in the back of the upper and lower lower covers ( 4th ), slide in and open the door ( 6th ) or lock the doors pressure-tight for double doors. See patent DE 10 2010 026 715 B3 .

Also ventilation elements according to patent DE 10 2010 026 715 B3 can in the side walls ( 3 ), Doors ( 6th ) and back wall ( 7th ) are introduced.

The sheet steel housing without welds for power engineering devices, especially for LV distributions, electrical control systems and telephony, consists of a sheet steel housing ( 1 ) and is usually supplemented with a substructure ( 2 ) made of sheet steel for fastening in the ground.

The new housing according to the invention has a modular structure. The identically designed side walls ( 3 ) are with identically designed covers ( 4th ), above and below, connected to form a base frame ( 5 ) for further completion to a complete housing ( 1 ). The base frame ( 5 ) is designed in such a way that a door ( 6th ) can be screwed on on the front as well as on the rear, but also a rear wall ( 7th ) with or without ventilation openings ( 8th ), or a lockable front panel can be inserted. Up is the cover ( 4th ) with a vent ( 9 ), an opening at the bottom ( 10 ) to divert the lines. Finally, a roof that is folded at right angles as a baking tray ( 11th ) with identically designed connectors ( 12th ), which via welding studs ( 14th ) on the inside of the roof ( 11th ) are attached to the cover ( 4th ) screwed. The connectors ( 12th ) are designed in such a way that the roof is over the upper edge of the base frame ( 5 ) survives a slight slope of the roof ( 11th ) is created to the rear by spacing in the screw connection, with the result that the room air inside the cabinet ( 1 ) via the ventilation opening at the top (9), the air cushion under the roof ( 11th ) and vents ( 13th ) on the connectors ( 12th ), can flow and at the same time it is ensured that a safe labyrinth-like contact protection, protection against splash water and protection against small animals is provided for the interior.

According to the invention, the above objects are achieved with the features of claim 1.

Figure list

Further goals, features, advantages and possible uses of the housing emerge from the previous description of an exemplary embodiment with reference to the drawings.

• 1 das gesamte Gehäuse (1) mit Unterbau (2) in perspektiver Ansicht;
• 2 Basisrahmen mit Seitenwände (3) und Abdeckungen (4) mit den Öffnungen (9),(10);
• 3 Ansicht Türseite mit Tür (6) und Rückseite mit Rückwand (7) mit Belüftungsöffnungen (8);
• 4 Ansicht komplett mit nach oben verschoben dargestelltes Dach (11), Abdeckblech (4), Verbinder (12) mit Entlüftungsöffnungen (13) und Position der Schweißbolzen (14) an der Innenseite des Daches (11);

Show in the drawings

• 1 the entire case ( 1 ) with substructure ( 2 ) in perspective view;
• 2 Base frame with side walls ( 3 ) and covers ( 4th ) with the openings ( 9 ), ( 10 );
• 3 View of the door side with the door ( 6th ) and back with rear wall ( 7th ) with ventilation openings ( 8th );
• 4th View complete with the roof shifted upwards ( 11th ), Cover plate ( 4th ), Interconnects ( 12th ) with vents ( 13th ) and position of the welding studs ( 14th ) on the inside of the roof ( 11th );

List of reference symbols

1

housing complete

2

Substructure

3

side walls

4th

Cover up, down

5

Base frame

6th

door

7th

Back wall

8th

Ventilation openings rear wall ( 7th )

9

Vent cover ( 4th ) above

10

Lower cover opening ( 4th ) to lead out the cables

11th

roof

12th

Connector for roof ( 11th )

13th

Ventilation openings on the connector ( 12th )

14th

Welding studs on the inside of the roof ( 11th )

Claims (1)

Sheet steel housing without welds for power engineering devices, especially for LV distributions, electrical control systems and telephony, consisting of a housing (1), usually supplemented with a substructure (2) made of sheet steel for fastening in the ground, the housing (1) characterized that identically designed side walls (3) with identically designed covers (4), above and below, are connected, thus forming a base frame (5) for the further completion to a complete housing (1), designed in such a way that a door (6) can be screwed on at the front as well as at the rear, but also a rear wall (7) with or without ventilation openings (8) or a closable front panel can be inserted at the rear, the cover (4) with a ventilation opening (9) at the top, downwards the opening (10) in the cover (4) serves to divert lines, upwards a roof (11) that is bent at right angles as a baking tray with identically designed connectors (12) which are fastened to the inside of the roof (11) via weld studs (14), screwed to the cover (4), designed in such a way that the roof (11) over the upper edge of the base frame (5) protrudes through a slight inclination of the roof (11) to the rear Distancing is generated in the screw connection, with the result that the room air inside the cabinet (1) can flow out via the ventilation opening above (9), the air cushion under the roof (11) and ventilation openings (13) on the connectors (12) and At the same time it is ensured that a safe labyrinth-like protection against contact, protection against splash water and protection against small animals is given for the interior.

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