Crank-Rocker 4-Bar Mechanism

Grashof crank-rocker linkage (r₁=2, r₂=4, r₃=3.5, r₄=5 m) — satisfies Grashof condition (s+l=7 ≤ p+q=7.5); sweeps the Freudenstein equation through 360° crank rotation to trace the 69.8° rocker oscillation and both toggle positions.

Category: mechanism · Difficulty: Advanced

Solution

This is a kinematic mechanism — it has one or more degrees of freedom and no static support reactions.

Open this example in StatIQ

All reaction values are computed by the StatIQ structural engine, not generated text. Signs follow the solver's convention: a positive R_y acts upward, a negative R_y downward; a positive M is counter-clockwise.