System for adjusting the rotation speed of a cross-cutting saw o

Details System for adjusting the rotation speed of a cross-cutting saw o System for adjusting the rotation speed of a cross-cutting saw o

1996-07-16

2000-03-28

Rada, Rinaldi I.

Cutting

With control means responsive to replaceable or selectable...

83 74, 836391, 83796, 83801, 144 341, 144356, B26D 504, B27B 3314

Patent

active

060416831

ABSTRACT:
An apparatus for adjusting the rotation speed of a cross-cutting saw of a tree handling machine, especially grapple harvester is provided. The apparatus is arranged to control a hydraulic cylinder connected to the guide bar of the cross-cutting saw in a power transmitting way. A line communicating with the source of pressure medium and having an adjusting unit for adjusting the pressure of the cylinder is connected to the hydraulic cylinder. The system further includes a computing unit, and a rotation speed sensor in conjunction with the cross-cutting saw for measuring the rotational speed of the cross-cutting saw. The rotational speed sensor has a data transmitting connection with the computing unit arranged to control the adjusting unit according to the measured speed.

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