A crane truss-type load-bearing beam

Abstract

The invention provides a truss type bearing beam of a crane, and relates to bearing beam structures of the cranes. The truss type bearing beam of the crane is provided with a lower front cross beam rod, a lower rear cross beam rod, an upper front cross beam rod and a lower rear cross beam rod, wherein at least five upper and lower supporting rods are arranged below the lower front cross beam rod and the upper front cross beam, and at least five upper and lower supporting rods are arranged between the lower rear cross beam rod and the upper rear cross beam rod; the distance from a center part to the space between the upper and lower supporting rods at two ends gradually increases; a V-shaped inclined support is arranged between the center part of the upper front cross beam road and two endsof the lower front cross beam, and another V-shaped inclined support is arranged between the center part of the upper rear cross beam rod and two ends of the lower rear cross beam rod; an inclined beam supporting rod is arranged between the end part of each V-shaped inclined support and the adjacent cross beam rod; a front and rear connecting rod is arranged between the front cross beam rod and the rear cross beam rod. The truss type bearing beam of the crane has the advantages of being light in mass, convenient to produce and mount, low in material consumption, and low in cost.

Description

technical field [0001] The invention relates to a crane load-bearing beam structure, in detail, it is a crane truss-type load-bearing beam with small mass, convenient production and installation, less consumables, low cost and high safety factor. Background technique [0002] We know that bridge cranes are equipment placed in workshops, warehouses and stockyards to lift materials in the air, and are widely used in various engineering fields. For lifting devices with a very large load capacity such as bridge cranes used in mines, the load-bearing beams are mainly plate-type box structures, such as figure 1 As shown, the load-bearing beam of the plate box is welded by large steel plates to form the box surface, and a reinforced steel plate is placed horizontally on the inner section of the box surface; the load-bearing beam of the plate box is placed horizontally on two load-bearing beam supports to form a crane support. The load-bearing beam of the crane with this structure ...

AI Technical Summary

Problems solved by technology

The load-bearing beam of the crane with this structure has high strength and rigidity, but its mass is often too large, which will inevitably increase the difficulty of construction during production and installation, with many consumables and high cost

Between the transition of two plates, stress concentration often occurs due to sudden changes in the section, resulting in too low a local safety factor, so local failure and damage may occur, resulting in economic losses or even casualties

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