LIFT BOOM ASSEMBLY FOR LOADER

摘要

PURPOSE: A lift boom assembly for a loader is provided to raise lifting capacity by lifting up or down a rotary shaft of a bucket or a front end member along a vertical passage. CONSTITUTION: In the initial step of moving a lift boom assembly(12) up by an actuator(14), a rotary shaft(40) of a front end member(34) rises by drawing a circular arc toward the front side up to a first intermediate position(M1) from the lowest position(L). The actuator(14) elongates and rotates up centering on a rotary shaft(16). A first control link(20) rotates toward the front upper portion while a second control link(24) rotates centering on a rotary shaft(22). At the same time, a connecting portion(30) rotates toward the front upper portion. An arm(32) rotates upward centering on a rotary shaft(28) following the connecting portion(30).