| 摘要 |
The ceiling grid (20) has main beams (21) and cross beams (22, 23), which beams have the shape of an inverted T with a web and vertical flanges, and form square openings of the length L when assembled. The main beams (21) are mounted in parallel with a distance of 2 L and are provided in their webs with slots spaced with a distance of L from each other. The cross beams (22, 23) comprise first cross beams (22) to be assembled perpendicularly to the main beam, having a length of 2 L and being provided with connectors (25) at their ends forming first stab-in-connections (26) with the slots in the webs of the main beams (21), each first cross beam (22) having a slot in the midst of its longitudinal extension, and second cross beams (23) to be assembled perpendicularly to the first cross beams (22), having a length L and being provided with connectors (24) at their ends forming second stab-in-connections (27) with the slots in the webs in the midst of the longitudinal extension of each of the first cross beams (22). The connectors (24, 25) of both the first and second cross beams (22, 23) have the same design. Accoridng to the inventin there are means for making the first stab-in-connection (26) tighter than the second stab-in-connection (27). <IMAGE>
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