| 摘要 |
Earth moving, ground leveling and land planing apparatus having a substantially rectangular frame which is pivotally attached at the back end thereof to a support member containing ground engaging wheels. A cutting blade is disposed laterally between the bottom sides of the frame and a bucket having an open front end is pivotally mounted at its lower forward edge to the frame adjacent the blade for swinging between a generally horizontal earth loading position and an upwardly tilting unloading position. A pair of hydraulic rams are provided, one ram for each side of the frame for lifting and pivoting the bucket. Mutually respective ends of the hydraulic rams are attached to the side members of the frame at a point along the longitudinal lengths of the side members which is between about the midpoint and back edge of the floor of the bucket when the bucket is in its lowered load carrying position. The other ends of the rams are connected to the bucket near the respective back upper edge corners thereof. Maximum efficiency in lifting and pivoting the bucket is achieved with minimal extension lengths required of the hydraulic rams. Further, minimal shear forces are exerted on the hinge system about which the bucket pivots.
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