汽车吊操作证怎么在网上查询,网站是什么?

2025-03-17 02:42:55
推荐回答(1个)
回答1:

汽车吊工作装置的主要性能指标还有以下几点。
(1)传力比装载机工作装置的传力比包括连杆机构和举升机构的传力比。连杆机构的传力比是指转斗油缸单位液压力能够产生的掘起力;举升机构的传力比是指举升油缸单位压力所获得的掘起力。连杆机构的传力比通常大于举升机构的传力比。真正决定装载机铲掘能力的是连杆机构的传力比,该传力比越大,工作机构的铲掘能力越好。
(2)铲斗平移性铲斗装满物料收斗后,在举升过程中,如果铲斗能基本保持平移,可以防止铲斗内物料向前或向后洒落,提高铲斗装满率,减少无功能耗。
(3)自动放平性装载机自动放平性指铲斗卸料下降至地面时,靠工作机构自身运动(转斗油缸不动作),铲斗能够保持平放(处于铲掘状态)。铲斗自动放平性,可以使每个作业循环减少一次收斗,有利于下一工作循环快速插入料堆,从而加快施工进度,提高作业生产率。

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