This thesis examines the problem of developing a dual braking system for a three-legged ramp. The braking system should be simple, easy to use and to maintain and also reasonably priced. It ought to work in both ways of rotation. Since nor conventional friction blocking device nor a conventional friction brake meet these criteria, we developed a unique braking system by changing the shape of friction blocking device's pendulum. Next, we determined the load in the entire braking system. Using analytic stress analysis, we quantitatively determined the size of bending and torsional stress in the system's most loaded element−the fixing pin. Thereafter, we determined the braking efficiency of the dual friction blocking device. Numerical analysis with the finite element method was then performed to determine the intensity of contact pressure and stress in the pendulum, when the latter is in contact with a moving surface.
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