Determining the rate of load discharge for a loader with its shovel on a rocker arm

Abstract

1. The results of our calculations agree with the experimental data. 2. By comparison with existing methods, ours is incomparably less laborious and permits us to analyze the influences of the principal constructional parameters on the velocity of load ejection. 3. Each type of loading machine has its own optimum value of i, a, rW, and μ (see text) for which the ejection velocity is a maximum (see Fig. 5, a-d). 4. For a machine with a flywheel (rotor of electric motor), with appropriate values of ρ and ψ we can get an appreciable increase in ejection velocity. For the PPN-2, with electric motor, for ρ=1 to 1.5 and ψ=−75 to −85°, v=4.55 m/sec, as against v=3.55 m/sec for the factory model (ψ=−23° and ρ=0.11 m). For large values of ρ and ψ, the second term in Eq. (23) becomes negative, the motor torque decreases, and its rate of rotation increases: i.e., at the moment of load discharge, the flywheel emits energy stored during the acceleration period.