A brand - new jib - bridge luffing system of crane is brought out based on analysis of the limitation to handle containers of the portal crane 摘要在分析门座起重机用于集装箱装卸作业的局限性的基础上,提出一种新型的起重机变幅系统。
The mentioned method is applied to design of pulley block compensation in luffing mechanism and the results show that the method is feasible and effective 在滑轮组补偿变幅机构稳健优化设计中加以运用,结果表明该方法是有效的和可行的。
The fuzzy optimization mathematical model is built with the optimization target of minimizing the volume of tooth corona of worm gear in luffing mechanism of tower crane 摘要以塔式起重机变幅机构中蜗轮齿冠体积最小为优化目标,建立了模糊优化设计的数学模型。
The optimizing design for the equalizing system ensured cargo to move horizontally in luffing process , the design method of balancing system achieved ideally effect 补偿系统的优化设计保证了货物在变幅过程中优良的水平位移性能,对自重平衡系统的设计方法和准则可使系统获得理想的平衡效果。
According to the technological data of the large lorry crane ' s pictures in foreign countries , we use the method of photo - view anti - processing , gain the luffing mechanism ' s structural measure parameter 摘要根据国外大型随车起重机的图片等技术资料,运用影像反求图解的方法,得出其变幅机构的近似尺寸。
But he luffed the boat less delicately , spilling the wind shamelessly from the sail so as to prolong the tack to the north shore . the shore would compel him to go about , and the contact would be broken 但他驾着船贴风行驶的手却懈怠了,不顾脸面地让风从帆边漏了出去,推迟了到达北岸的时间,因为一到了北岸就得回头,两人就得分开。
This ship is a non - propelled fixed luffing 500t steel crane vessel . this vessel is mainly used to lift and hookup the concrete components , bridge blocks , mechanical electrical equipments for harbours , bays , quays and jetty 建港304为非自航固定变幅式500吨钢质起重船,主要用于中国南海沿海各港湾港口及内河码头和堤岸的混凝土构件桥梁机电设备等吊装工程。
A puff of wind was heeling the boat over till the deck was awash , and he , one hand on tiller and the other on main - sheet , was luffing slightly , at the same time peering ahead to make out the near - lying north shore 一阵风吹来,船体倾斜了,水花溅上了甲板。马丁一手掌舵一手操纵主帆,让船轻轻地贴风行驶,同时眺望着前方,要找出不远处的北岸,没有意识到露丝在看他。
By use of adams software and the mechanical system , the simulating design and optimum analysis of the lorry crane luffing mechanism and the best structural parameters were get based on the original data of anti - processing measure 采用目前使用最广泛的机械系统仿真分析软件adams软件,以反求设计尺寸为初值进行随车机变幅机构的动态仿真设计和优化分析,以期获得合理的尺寸参数。
I ran on deck . the watch was all forward looking out for the island . the man at the helm was watching the luff of the sail , and whistling away gently to himself ; and that was the only sound excepting the swish of the sea against the bow 我跑上了甲板,观望者正全神贯注在向前注视着岛屿的出现,掌舵的人正在看风使舵,一边自个儿轻轻地吹着口哨除了海水拍打船头和船舷的咻咻声外,那就是惟一的声音了。