Browse Publications Technical Papers 2019-26-0103
2019-01-19

An Investigation on Articulation Dynamic Loads of Wheel Loader 2019-26-0103

Wheel loaders are heavy earth moving machines used in construction field for applications like truck loading, stockpiling and various other material handling operations. Wheel loaders are classified according to their operating weight and pay load capacities in the construction equipment market. Wheel loaders are equipped with articulated steering using two hydraulic cylinders connecting the front frame and the rear frame. The speed of steering is controlled by the steering control valve, which controls the hydraulic oil flow rate to the steering cylinder. The expansion and retraction of the two cylinders makes the wheel loaders to articulate with pin joint connecting the frames. The speed of the steering plays a critical role in loader stability and safety with loaded bucket. The impact force caused due to the steering influences the operator comfort, stability & durability of the structural components in the machine. It becomes important to understand these impact loads amplitude for a particular vehicle configuration .This paper attempts to investigate the impact forces triggered on the frames during the steering operation. The study focuses the effect of the machine rear bogie mass & CG for a particular steering speed in wheel loaders. This work would support to enhance the optimized machine layout for the system at early stages of product design.

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