30 hp are supplied at 75 cm gear by means of a pinion, as shown in figure 1. In the pulley of 60 cm 20 hp is taken out and, in the 20cm crank 10 hp are taken out. The mass of the pulley is 450 kg, in order to provide some flywheel effect and rotates at 300 rev/min. The arrangement of elements and stresses in the belt are shown in Figure 1. The tangential force is Tt = 1900 kN and the radial force is Tr.= 690 N of stresses in the band is 4:1. Loads are applied with moderate shock with kf = kfs = 1.97 and kfm = kfsm = 1.54. For the 30 mm diameter shaft in figure 1, determine: a) the shear and bending moment diagrams in the vertical, horizontal and total planes; b) what is the bending moment at the bearing location that is between the gear and pulley, in kN m? c) What is the maximum bending moment on the shaft, in kN m? d) Which Are the maximum shear and normal stresses and where do they occur?
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Daniel
30 hp are supplied at 75 cm gear by means of a pinion, as shown in figure 1. In the pulley of 60
cm 20 hp is taken out and, in the 20cm crank 10 hp are taken out. The ...