LOCKING DEVICE FOR SECURING A BACKHOE ATTACHMENT TO A CARRIER LIFT ARM

摘要

A mounting frame (40) forattaching a backhoe (42) or other implementto a lift arm (24) of a vehicle, such as acompact loader (10), includes an upright arm(50) on the mounting frame (40) that ispositioned ahead of and adjacent to a forwardportion (26) of a lift arm (24) of the loader.The upright arm (50) carries a pivotinglocking handle (54) at a first pivot (66) and alocking link (52) is pivotally supported onthe locking handle (54) on a first pivot pin(58). The locking link (52) has a secondpivot pin (59) that can be moved to besupported in an existing pin sleeve or bushing (38)on the lift arm (24). The pivot pins (58, 59)on the locking link (52) are positioned sothat when the locking handle (54) is movedto a locked position, the line between theaxes of the pivot pins (58, 59) on thelocking link (52) goes over center with respect tothe pivot axis of the first pivot (66) of thelocking handle, and a hook end (60) of thelocking link latches onto a lockingprojection (66) on the upright arm (50). Themounting frame (40) is held in a fixedposition relative to the lift arm (24).