Dynamically active dipper door mechanism
First Claim
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1. A dipper assembly comprising:
- a dipper having an open bottom, an open top, and closed sides;
a door pivotally linked to said dipper, and having an open position and a closed position, wherein in said closed position, said door closes said dipper bottom;
a linear actuating mechanism linked to said door for controlling said door as it moves between said open and closed positions; and
a linkage actuated by said linear actuating mechanism, said linkage including a first link having a first end and a second end, said first end being pivotally linked to said door and said second end being pivotally linked to one end of a second link and a rod of said linear actuator, said second link including said second link one end and an opposing end pivotally linked to a point fixed relative to said dipper, wherein actuation of said linear actuator controls said door as it moves between said open and closed positions.
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Abstract
A dipper door pivotally mounted to a dipper is controlled as it pivots between open and closed positions. In one embodiment, the door is controlled by a brake pivotally linking the door to the dipper. In another embodiment, the door is pivotally mounted to the dipper by a pin, and the door is controlled by a linkage actuated by a linear actuator. The pivot point of the door is positioned above the dipper bottom to decrease the dump height of the dipper.
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Citations
3 Claims
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1. A dipper assembly comprising:
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a dipper having an open bottom, an open top, and closed sides;
a door pivotally linked to said dipper, and having an open position and a closed position, wherein in said closed position, said door closes said dipper bottom;
a linear actuating mechanism linked to said door for controlling said door as it moves between said open and closed positions; and
a linkage actuated by said linear actuating mechanism, said linkage including a first link having a first end and a second end, said first end being pivotally linked to said door and said second end being pivotally linked to one end of a second link and a rod of said linear actuator, said second link including said second link one end and an opposing end pivotally linked to a point fixed relative to said dipper, wherein actuation of said linear actuator controls said door as it moves between said open and closed positions. - View Dependent Claims (2, 3)
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Specification