نتایج جستجو برای: hydraulic mobile crane
تعداد نتایج: 203367 فیلتر نتایج به سال:
This paper summarizes the most important advances of the used crane control technology in perspective of unmanned operation of container cranes. Unmanned operation with remote control support today is available for almost all types of new/existing rail mounted container cranes. Storage capacity is the limitation for most terminals today; unmanned operation offers optimum stacking density and pe...
Introduction: Overhead cranes play a vital role in guiding steel industries and maintaining their normal condition. These machines are operated by humans and pose a great risk of accidents that may occur due to mistakes made by operators. According to the mentioned contents, the non-negligible effects of noise on the physical and mental health of people in the work environment, the complexity a...
The paper presents the model of operator’s specialist traveling crane for qualitative needs of studies on human work place. The crane accepted for analysis supports the metallurgical process of rolling sheets.
tower cranes are major and expensive equipment that are extensively used at building construction projects and harbors for lifting heavy objects to demand points. the tower crane locating problem to position a tower crane and supply points in a building construction site for supplying all requests in minimum time, has been raised from more than twenty years ago. this problem has already been so...
During the rough marine environment, heave compensation is used to offset motion of vessel when a crane lifts and lands load. Thus, load are realized decoupled. In previous studies, interference items such as hydraulic cylinder friction, underwater drag force nonlinear friction in active system compensated concentrated be estimated. this paper, we disassembled items; disturbance observer adapti...
A range of continental-scale soil datasets exists in Europe with different spatial representation and based on different principles. We developed comprehensive pedotransfer functions (PTFs) for applications principally on spatial datasets with continental coverage. The PTF development included the prediction of soil water retention at various matric potentials and prediction of parameters to ch...
The objective of this paper is to analyze the crane structures as a step to study their effects on the structures working integrally with them. The interaction between cranes and those structures has dominant effects on the global system behavior. Crane structures may have many forms of space structures. It is not logical or economical to perform experimental modal analysis to all of them to in...
Three migratory subspecies of sandhill crane (Grus canadensis) occur in North America: greater (G. c. tabida), Canadian (G. c. rowani), and lesser (G. c. canadensis). These subspecies vary clinally in size from the large tabida to the small canadensis. All 3 subspecies co-occur during the nonbreeding season, but field identification is challenging and census efforts typically do not even attemp...
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