Reducing Digger Energy Consumption By
Improving The Walking Mechanism
Author(s)
S. Lyaptsev, N. Stepanova & N. Suslov
Abstract
To evaluate the energy to move the excavator body, we calculated the effort
involved in the hydraulic cylinders of the walking mechanism. Unlike man,
\“pacing” the excavator is on a \“drawing”, in which the housing pulls the
excavator walking mechanism in the direction of the reference points. As a
result, the kinematic and dynamic study of the process of pacing is reduced to the
analysis of speeds and loads for the simplest of mechanisms, known since
ancient times as the slider-crank mechanism. Analysis of the motion of this
mechanism can be carried out by conventional (calculated for one position) or by
modern analytical methods. Modern methods of analytical studies of the
mechanisms permit a computer calculation of the full cycle of movement of
the excavator in a single step and to evaluate the stresses produced in the
hydraulic cylinders. A variety of design solutions based on different positions of
the connecting joints is recorded during the test set kinematics and, accordingly,
an amount in the results is obtained. Power movement by one step excavator is
theoretically estimated as the amount of work the forces acting on the
mechanism during this step undertake. A design that corresponds to the
minimum energy consumption should be considered optimal for this type of
walking mechanism. The authors of this paper analyzed the performing over
thirty different types of mechanisms of pacing. Recommendations for optimizing
their designs are formulated for each of these, which not only reduces the power
consumption excavator, but also reduces its price.
Keywords: excavator, walking mechanism, hydraulic cylinder, speed,
acceleration, force, energy consumption.
Keywords
excavator, walking mechanism, hydraulic cylinder, speed,
acceleration, force, energy consumption.
Related Book
Other papers in this volume
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