In the field of modern engineering construction, large-scale construction machinery such as cranes, excavators, and loaders play an indispensable role. As the core equipment for vertical and horizontal material handling, cranes need to be customized with truss-type or box-type steel structural parts booms according to the lifting weight and amplitude requirements in scenarios such as port loading and unloading and bridge construction to withstand huge bending moments and tensile forces; excavators are often used in mining and earthwork projects. The working device consisting of its boom, dipper and bucket adopts a high-strength low-alloy steel structural parts, which is adapted to different digging forces and digging depth requirements through non-standard design; loaders are responsible for material loading and short-distance transportation tasks in construction sites, mines and other places. Its articulated frame and working device need to optimize the rigidity and toughness of the steel structural parts according to the working environment and material characteristics. The skeleton and supporting structural parts of these large-scale construction machinery are all designed with non-standard steel structural partss. From material selection, node construction to overall layout, they have all been precisely calculated and repeatedly verified to meet the stringent strength and stability requirements under different working conditions and ensure the efficient and safe operation of the equipment.
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