US 4,291,734 A · Tree processing apparatus

Abstract

Apparatus for handling drive cables and hoses used on a tree processing apparatus (10) wherein a processing head (14) travels along a horizontal boom structure (12). The processing head extend cable system (46) includes a single cable (80) which is attached at one end to the processing head and is reeved over sheaves (66, 68) attached to a hydraulic cylinder output member (55), over stationary idler sheaves (82, 86) over an adjustable idler sheave (84) and is attached at the other end to the processing head. The retract cable system (48) includes a single cable (89) which is attached at one end to the processing head, is reeved over a stationary idler sheave 93, over a sheave (70) attached to the output member (55), and is fixed at the other end to the boom structure. The adjustable idler sheave (84) is attached to a member (92) which can be adjusted relative to the boom to adjust the tension in both cables (80, 89). The hoses (106, 107, 108) which travel with the processing boom are connected at one end to the processing boom and are reeved over stationary idler sheaves (114, 115, 116), over sheaves (72, 73, 74) which are attached to the output member (55), and are attached at the other end to the boom structure. The hose tension is also adjustable by means of the member (92).

Claims16

Dependent claims

Apparatus for processing trees comprising an elongated boom;

a processing head movable along said boom and operable to delimb trees positioned adjacent said boom and in parallel relation thereto;
a hydraulic cylinder mounted on said boom, said cylinder having a first end member attached to said boom and a second end member movable relatively toward and away from said first end member;
a first sheave mounted for rotation on said second end member;
a second sheave mounted for rotation on said boom and spaced from said first sheave in a direction extending toward said first end member;
a third sheave mounted for rotation in a stationary position relative to said boom between said first and second sheaves;
a fourth sheave mounted for rotation on said second end member;
a fifth sheave mounted for rotation on said boom and spaced from said fourth sheave in a direction extending toward said first end member;
and a first cable attached to one end to a first end of said processing head, reeved respectively over said second, first, third fourth and fifth sheaves and attached at the other end to said first end of said processing head.

5 more elements

Dependencies are inferred from the claim text.

Tree processing apparatus

Life of this patent

Tree processing apparatus

Life of this patent

Abstract

Claims16