Due to the central role of cranes in construction operations, specialists in the construction industries have cooperated in the development of structured methods and software to help select the best crane type in construction sites. Crane selection is a time consuming process which needs extensive data exploitation. Moderately few systems have been developed to aid in selecting cranes and in se...

BACKGROUND In this study, the measurement of job stress of electric overhead traveling crane operators and quantification of the effects of operator and workplace characteristics on job stress were assessed. METHODS Job stress was measured on five subscales: employee empowerment, role overload, role ambiguity, rule violation, and job hazard. The characteristics of the operators that were stud...

Rail-rail transshipment yards are an emerging and more e cient alternative to traditional shunting yards. Instead of a time-consuming reshu ing of railcars via shunting hills, in these modern yards, huge gantry cranes tranship containers between di erent freight trains. As multiple cranes process the trains in parallel, it is an important operational task to avoid interferences among cranes. To...

Open-sea ship-to-ship transfer operation is an alternative way to avoid port congestion. This process involves a relatively small vessel which transports containers between the harbour and a large cargo ship equipped with a container crane. However, the presence of disturbances and uncertainties caused by harsh open-sea conditions can produce an excessive sway to the hoisting ropes of the crane...

This report concludes that there is great scope for expansion of the simulation facilities so far developed. In particular, it is recognised that training and competency testing of teams of personnel such as the banksman and supply ship's master could be integrated into crane simulator training scenarios and that this approach offers great potential for reducing the number of crane related acci...

For low cost, easy assembly and less maintenance, overhead crane systems have been widely used for material transportation in many industrial applications. Due to the requirements of high positioning accuracy, small swing angle, short transportation time, and high safety, both motion and stabilization control for an overhead crane system becomes an interesting issue in the field of control tech...

Crane is an important equipment of national economic construction. Compared with the faulty crane, crane good performance has lower energy consumption and less pollution to environment. In this paper, analytic hierarchy process used evaluate safety portal help users find deal existing problems in time, play a positive role sustainable development economy.

This paper is introduced to be the obstacle recognition, path planning and oscillating control for an automobile crane system on-line. We studied the autonomous mobile overhead traveling crane so for. In particular, the research of obstacle recognition, path plan and oscillating control is carried out. For on-line obstacle recognition, the obstacle recognition system using the ultrasonic sensor...