Cable-stayed sling type cross beam spreader

Abstract

A cable-stayed sling type cross beam spreader comprises a bottom millstone, a suspension ring, a first clasp, a second clasp and four lower slings. The bottom millstone is provided with four first connecting holes; the first clasp and the second clasp sleeve on the suspension ring; four groups of diagonal members are arranged between the suspension ring and the bottom millstone; each diagonal member group includes a turnbuckle group, an upper sling and an upper clevis; the turnbuckle comprises a nut, an upper screw and a lower screw; the lower end of the lower screw and the upper end of the upper sling are connected through a pin roll; the lower end of the upper sling is connected with the upper end of the upper clevis by a pin roll; the upper end of each upper sling is connected with a lower clevis; lower ends of four upper clevises are respectively connected to four first connecting holes; and the upper ends of the four lower clevises are respectively connected to the four first connecting holes. The cable-stayed sling type cross beam spreader provided by the invention does not produce radial force on the lifting products in the lifting process; the position of the suspension ring can be adjusted; and the stress on the bottom millstone is greatly reduced for lifting products with the same weight.

Description

technical field [0001] The invention relates to a sling, in particular to a cross beam sling. Background technique [0002] Requirements for vertical hoisting of the product with a single hook: [0003] 1) The angle between the product axis and the vertical direction is not more than 3°; [0004] 2) The spreader shall not generate additional radial force on the product; [0005] 3) The spreader must be able to adapt to changes in the position of the center of mass of the product within a certain range. [0006] The existing spreader cannot meet the above requirements, and when the existing spreader lifts the product, the product cannot be kept level, which is inconvenient for docking; in addition, the cross beam bears a large bending moment during the lifting process of the existing spreader. The weight of the product and the span of the lifting point are continuously increasing. In order to meet the requirements of use, the size and weight of the cross beam also need to ...

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Problems solved by technology

[0004] 2) The spreader shall not generate additional radial force on the product;

[0006] The existing spreader cannot meet the above requirements, and when the existing spreader lifts the product, the product cannot be kept level, which is inconvenient for docking; in addition, the cross beam bears a large bending moment during the lifting process of the existing spreader. The weight of the product and the span of the lifting point continue to increase. In order to meet the requirements of use, the size and weight of the cross beam also need to increase a lot, resulting in difficulties in design and use.

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