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液压挖掘机自五十年代问世以来,由于它的工作装置多样化和机动灵活,在完成特殊的工作中发挥巨大作用。卅多年来得到迅速的发展。所有类型液压挖掘机的标准可换工作装置是正铲、反铲和抓斗。这些工作装置都用油缸支承,常规工作装置油缸的布置如下:动臂油缸与动臂及回转平台铰接;斗杆油缸与斗杆及动臂铰接;铲斗油缸与斗杆铰接。以正铲为例,若要铲斗作水平运动(这是清理工作面及提高
Since the advent of the hydraulic excavator in the 1950s, due to its diversified workplaces and its flexible maneuverability, hydraulic excavators have played a significant role in carrying out special tasks.卅 Rapid development over the years. Standard interchangeable working devices for all types of hydraulic excavators are front shovels, backhoes and grapples. The working devices are supported by oil cylinders. The arrangement of the conventional working device cylinders is as follows: the boom cylinder is hinged with the boom and the swing platform; the arm cylinder is hinged with the arm and the boom; the bucket cylinder is hinged with the arm. Taking a shovel as an example, if the shovel is to be moved horizontally (this is to clean up the work surface and raise it