LINK OVERLOAD DETECTING DEVICE FOR SIMULTANEOUS TWO-SHAFT DRAWING DEVICE

摘要

PURPOSE:To avoid application of abnormal load to be essentially not loaded on a shear pin even if looseness of a sprocket is generated at the worst by providing a shear pin to be broken at overload on the contact part between a sprocket journaled on the outer circumferential face of the boss of a link device and the boss. CONSTITUTION:Fitting position of a shear pin is brought close to the axis of a driving sprocket 1 and provided on the end face of the boss part 4 of the sprocket 1, so as not to directly receive influence due to looseness on the shear pin 5. Hereby, even if looseness is generated at the sprocket 1, tensile force is only applied on the shear pin 5 itself, except the shearing force to transmit power, and bending load to decrease the life is not applied.