Rack

Abstract

The invention relates to a rack (10) comprising a plurality of frame pieces (12, 14, 16, 18, 22, 24, 26, 28, 32, 34, 36, 36) that can be interconnected, every frame piece being a cylindrical hollow profile (42; 142) which extends along its longitudinal axis (L) and the lateral axes (L) of two interconnected frame pieces being positioned at a right angle relative to each other. The rack (10) further comprises, for the purpose of interconnecting several frame pieces (22, 24, 32), at least one bracing unit (40) that is capable of bracing a first frame piece (22, 24, 32) against at least one second frame piece or against at least one corner connector (20) interposed between the frame pieces (22, 24, 32) to be interconnected. The bracing unit (40) comprises at least one separately configured bracing element (44) which extends substantially across the entire length of the first frame piece (22, 24, 32), and two force transmission elements (46) associated with the bracing element (44), said force transmission elements transmitting a bracing force of the bracing element (44) onto the components of the rack (10) to be braced against each other, the bracing force being effective in the direction of the longitudinal axis (L) of the first frame piece (22, 24, 32) to be braced, and the bracing force bracing the first frame piece (22, 24, 32) against the at least one second frame piece and / or against the at least one corner connector (20).

Description

technical field [0001] The invention relates to a frame, in particular to a frame constituting a frame for a switch cabinet, which frame comprises a plurality of frame elements which can be interconnected, wherein each frame element is configured as a cylindrical hollow profile (profile) and extend along the longitudinal axis, and wherein the longitudinal axes of the two interconnected frame members are arranged obliquely towards each other. Here, the term "frame" is used to denote support structures, for example for furniture construction and especially for shelving construction, but also other support structures (e.g. bottom frames for machines, support frames for boxes, etc.) . Background technique [0002] The already mentioned switch cabinets are generally used to accommodate electrical and electronic components (eg sensors) of processing plants, machine tools or production plants etc. which are not located directly in or on the machine. Depending on the nature of the...

AI Technical Summary

Problems solved by technology

[0011] The welding process used to join the frame parts produces corrosion by burning in the region of the weld seam, which locally destroys the coating of the frame parts and may thus reduce the desired electrical conductivity and / or corrosion resistance of the frame parts sex

In addition, some coatings may adversely affect the welding process, making it necessary to free the structural components to be joined from coatings prior to the welding process.

[0012] For the purpose of avoiding corrosion or ensuring improved electrical conductivity of the frame parts, the only remaining possibility is to apply or repair a suitable coating after the welding process, which involves additional costs and increased time during the manufacturing and assembly process expenditure

[0013] Last (but not least) it should be mentioned that the disadvantages of welding are: not only high energy requirements but also expensive work protection measures for welding personnel

[0016] However, even in this embodiment, if the switchgear is moved by a crane, the problem arises of insufficient rigidity of the switchgear against deformation, so that it may be necessary to provide additional elements in order to ensure sufficient stability of the frame

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