This paper presents an original interactive analysis method consisting of mathematical calculation based on theoretical mechanics and mechanics of materials, and dynamics simulation for quantifying outrigger reaction forces of a kind of hydraulic mobile crane, aiming to avoid the eventualities during normal operation as far as possible, for example, tipping-over. First, a three dimensional dyna...

This article presents the identification and control of an electro-hydraulic crane. The crane is of the type used on forestry vehicles known as forwarders, which travel off-road collecting logs cut by the harvesters. The dynamics identified include significant frictional forces, dead zones, and structural and hydraulic vibrations. The control algorithm proposed, comprised of a linear controller...

Introduction: Currently, mobile boom cranes equipped with telescopic equipment are widely used in construction, loading and unloading, as well installation. Purpose of the study: We aimed to develop a dynamic model for railway lifting crane, taking into account interaction its structural elements each other bearing soil surface three-dimensional formulation. Methods: In course study, we Simulat...

• Non-linear dynamics modelling description for simulating the behaviour of forestry cranes 2014 • Modeling an industrial flotation process: A case study at the mining company Boliden AB 2012 • Modeling dynamics of an electro-hydraulic servo actuated manipulator: A case study of a forestry forwarder crane 2012 • Underactuated mechanical systems: Contributions to trajectory planning, analysis, a...

A small, truck-type slewing crane with a grab was centrally mounted at the front of an 8-ton box-type tipping trailer. The crane and grab were operated by the hydraulic system of the tractor. Attempts to modify the control valves of the crane were not successful and it was concluded that the standard controls supplied for truck-type cranes were not suitable for this purpose. A standard double-a...

Construction projects often involve the use of mobile crawler cranes to excavate, backfill, dredge or move material and equipment on or near slopes. Crane manufacturers often only provide guidelines for the safe operation of cranes with respect to over tipping. However, the complex interaction of many variables such as the crane, its load, the slope geometry and its geotechnical properties can ...

The mobile crane simulator is a project sponsored by Employment and Vocational Training Administration, Council of Labor Affair, Executive Yuan, Taiwan, to build a safe device for training and licensing. This paper presents the principle and mechanism to build a high-fidelity interactive visual simulator on a cluster of PCs. The implemented mobile crane simulator uses the peer-to-peer architect...

This paper presents a modeling approach based on Bond Graph (BG) method for offshore hydraulic crane focusing on its hydraulic system characteristics. A hydraulic library is built in the modeling software tool 20-sim using BG elements. The hydraulic submodels are designed according to one specific type of offshore crane, however, they can be easily modified and reused for other similar systems....