Trenching assembly
First Claim
1. A trenching assembly, comprising:
- a frame that extends along a longitudinal axis;
a hood assembly having a surface-engaging member and defining a cavity;
a rotatable blade at least partially positioned within the cavity, in which the blade rotates about a blade axis; and
a linkage assembly interconnecting the frame and the hood assembly, in which the hood assembly is pivotable relative to the linkage assembly about a first axis that is perpendicular to the blade axis.
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Accused Products
Abstract
A trenching assembly used to cut a narrow trench in the ground surface. The trenching assembly comprises an attachment frame connected to a hood assembly via a linkage assembly. The attachment frame may be attached to the rear end of a work machine. A rotatable blade is disposed within a cavity defined by the hood assembly. The hood assembly may rotate about two different axes relative to the linkage assembly, and the linkage assembly may rotate about two different axes relative to the attachment frame. The trenching assembly uses a pair of accumulators to hydraulically rotate the linkage assembly about a horizontal axis relative to the frame in response changes in depth of the ground surface being cut by the blade. The linkage assembly may be hydraulically rotated using the accumulators without input from the operator.
122 Citations
21 Claims
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1. A trenching assembly, comprising:
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a frame that extends along a longitudinal axis; a hood assembly having a surface-engaging member and defining a cavity; a rotatable blade at least partially positioned within the cavity, in which the blade rotates about a blade axis; and a linkage assembly interconnecting the frame and the hood assembly, in which the hood assembly is pivotable relative to the linkage assembly about a first axis that is perpendicular to the blade axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A trenching assembly, comprising:
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a frame that extends along a longitudinal axis; a hood assembly having a surface-engaging member and defining a cavity; a rotatable blade at least partially positioned within the cavity; and a linkage assembly interconnecting the frame and the hood assembly, in which the hood assembly is pivotable relative to the linkage assembly about a first axis that is perpendicular to the longitudinal axis of the frame; in which the hood assembly is characterized by a pair of opposed sides, and in which the linkage assembly comprises a pivot arm attached to only a single side of the hood assembly, and in which the pivot arm has a flat bottom surface that is positioned parallel to the surface-engaging member. - View Dependent Claims (11, 12, 13, 14)
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15. A trenching assembly, comprising:
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a frame that extends along a longitudinal axis; a hood assembly having a surface-engaging member and defining a cavity; a rotatable blade at least partially positioned within the cavity; and a linkage assembly interconnecting the frame and the hood assembly, in which the hood assembly is pivotable relative to the linkage assembly about a first axis that is perpendicular to the longitudinal axis of the frame; in which the hood assembly is pivotable relative to the linkage assembly about a second axis that is perpendicular to the first axis. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification