Ratchet Wheel

Ratchet wheel tooth bending / shear strength and pawl self-locking.

Input Parameters

Pitch radius r

Number of teeth z

—

Torque demand T

N·mm

Allowable bending stress σ_allow

MPa

Allowable shear stress τ_allow

MPa

Friction coefficient μ

—

Tooth face angle φ

Pawl geometry & material

Number of pawls N

—

Load-share unevenness kᵤ

—

Pawl root thickness c

Pawl lever arm a

Pawl allowable bending σₚ,allow

MPa

Ratchet wheel rim

Wheel rim thickness t_r

Dynamic engagement (0=off, 1=on)

—

Impact speed v_imp

m/s