Patent ID: 11208298

Abstract:
A side lift spreader main beam (22) comprises a vertical carrier plate (58) having a first vertical height (H1) and being made of steel plate having a first thickness (T1); a C-beam (60) comprising a first horizontal flange (64) and a second horizontal flange (66) interconnected by a vertical web portion (68), the C-beam (60) having a second vertical height (H2) lower than the first vertical height (H1) and being made of steel plate having a second thickness (T2) thinner than the first thickness (T1), wherein the C-beam (60) defines, together with the carrier plate (58), a closed channel beam with a first flange (74) of the carrier plate (58) extending vertically from the closed channel beam; and an inclined support plate (62) welded to the carrier plate, and to an outer face of the first flange (64) of the C-beam (60) at a distance from the carrier plate (58).