| 摘要 |
A mechanism for retaining a pre-selected orientation of a front-end loader bucket at all points throughout the working range of the lift arm assembly includes a linkage system designed to allow rotation of the bucket from a tilted back position to a fully dumped position throughout the range of the lift arm assembly without limiting the range of the lift arm assembly and to provide strength and mechanical integrity to its components at any orientation of the lift arm assembly or the bucket. At extreme raised position the bucket is able to be rotated from a full tilted back orientation to a dumping orientation that allows the floor of the dumped bucket to approach or achieve a position perpendicular to the plane upon which the loader vehicle is standing or assuming the vehicle is on a level plane the orientation of the bucket would be considered as straight down. As the bucket rotates zthrough the dumping process components of the linkage system travel a path over and beyond the end of the raised lift arm assembly maintaining favorable mechanical advantage over the bucket throughout its rotation. At the extreme lowered position of the lift arm assembly the bucket can be rotated from a full tilted back orientation to a position past straight down which is desirable when performing certain operations with a front-end loader. The design of the bucket orienting mechanism is paramount in allowing the combination of all the afore mentioned maneuvers and is therefore considered as the invention.
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