Working unit of contruction equipment with attachment self leveling function

摘要

A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the reference or ground surface, thereby maintaining the horizontal position of the attachment without any motion for controlling the bucket cylinder while lifting up the attachment from the initial position to the uppermost position by the arm-up motion during the operations of construction equipment. The attachment self leveling linkage has a simplified construction, thereby being easily produced and installed at a lower cost and lightening the weight of the working unit. The linkage thus improves the operational efficiency of the working unit.