| 摘要 |
A delimbing shear attachment for a moveable boom mounted on a motorized or self-propelled vehicle having an operator's station such as a cab or platform from which the operator controls movement of the boom and attachment and the application of hydraulic power to an attachment mounted on the boom. The shear attachment comprises a mounting frame detachedly secured to the boom, an anvil member rigidly connected to said mounting frame and a cutting member pivotally connected at one end to the mounting frame and having a cutting edge disposed in cooperating relation with the anvil member. A double-acting hydraulic cylinder is operated in one direction to open the shear to receive a tree limb or other workpiece to be sheared and in the other direction to bring the cutting edge into engagement along its entire length with the anvil to shear off the workpiece. The anvil and cutting member are positioned on said mounting frame toward the side closest to the operator's cab, whereby an operator in the operator's cab will have the best possible view of the shear attachment and can most effectively control the movement of the boom and operation of the shear attachment. The anvil and cutting member are reinforced to resist deformation and the cutting member has an integral flange which helps retain the workpiece between the anvil and cutting member.
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