FIELD: construction.
SUBSTANCE: invention relates to the field of construction, in particular to technological hatches. The frame contains a frame and a supporting structure. The frame is made in the form of a flat contour, to which two flat contours are attached on both sides. The supporting structure is made of steel closed profile in the form of two supports. The end of one of the sides of each of the supports is pivotally connected to the frame. In the closed position, the projection of the supports repeats at least part of the projection of the frame.
EFFECT: invention increases strength with a minimum thickness of the structure.
7 cl, 9 dwg
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Authors
Dates
2023-02-21—Published
2022-05-20—Filed