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Bi-Folding Gate Mechanism

Machine Design Applications

Bi-Folding Gate Mechanism

Orange conrod, green and upper yellow cranks create a parallelogram mechanism. R1: pitch radius of green gear R2: pitch radius of blue gear i = R1 / R2 = 40 / 19. This ratio is needed to meet requirement when green gate rotates α = 58 deg., blue gate rotates 90 deg. in relation with the green gate. i changes when α has different values. i = 1 if α = 90 deg. If necessary a supporting swivel wheel for the blue gate is mounted at its lower right corner.

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