This paper presents the main types and features of luffing mechanisms of gooseneck jib lorry loading cranes and proposes design requirements for 304304 type luffing mechanism.
介绍了随车起重机变幅机构的主要形式和特点，提出304304型变幅机构在设计时的要求。
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“Natural” and “effortless” were the words most often applied to that smooth, honeyed, gorgeous voice, which made skin break out in goose-bumps and raised thehairs on the back of the neck.