| 摘要 |
Disclosed is a timber-working head which includes a frame, a first delimb arm and a second delimb arm. The first and second delimb arms are pivotally coupled to the frame. Each of the first and second delimb arms includes a delimbing cutting edge. The timber working head further includes a single delimb cylinder mounted to both the first delimb arm and the second delimb arm so as to be floatable relative to the frame. The delimb cylinder is operable to pivot the first and second delimb arms relative to the frame to open and close them. The first and second delimb arms are operatively unconnected from one another allowing pivotal movement of each of the first and second delimb arms without corresponding pivotal movement of the other of the first and second delimb arms. The second delimb arm includes a cam stop defining a variable closure point for the first delimb arm. The first delimb arm is configured to pivot into closed engagement with the cam stop. |
