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油缸的设计计算,在液压传动设计手册中已有阐述,但仅限于单伸缩缸,而对双伸缩油缸和单伸缩加长杆的油缸没有涉及。特别是对受力分析谈得较少,对于偏心载荷没有阐述清楚。因此在计算中,有的把西德、英国试验规范规定的数值作为载荷偏载的依据;有的把摩擦角在球头表面的距离作为偏心距离;在计算活柱强度时,有的把一级缸伸出的中缸和中缸伸出的活塞杆笼统加起来,按最细的杆径来验算强度;对加长杆的油缸也是以加长杆上卡箍槽最细直径作为两段活塞杆的统一直径来计算,以保证有最可靠的强度(支撑能力);验算的断面也只取最外层油缸口处的一处断面。这种近似计算,安全性能的确可靠得多了,但这样计算
Cylinder design calculations, hydraulic drive design manual has been described, but limited to single telescopic cylinder, and double telescopic cylinders and single telescopic rod not covered. In particular, the analysis of stress less talk about the eccentric load is not clearly articulated. Therefore, in the calculation, some of the West Germany, the British test specification values as the load partial load basis; some of the friction angle in the ball head surface as the eccentric distance; in calculating the column strength, and some to a Cylinder cylinder out of the cylinder and the cylinder out of the rod together in general, according to the smallest diameter to calculate the strength of the extension of the cylinder is also to increase the rod diameter of the clamp groove as two sections of the piston rod Uniform diameter to calculate, in order to ensure the most reliable strength (support capacity); check section also only take the outermost cylinder port at a cross-section. This approximate calculation, the security performance is indeed much more reliable, but this calculation