CONNECTING STRUCTURE OF ROTATING SHAFT UNIT TO ROTATOR AND APPARATUS FOR CUTTING TREE AND PLANT USING THE SAME CONNECTING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a connecting means capable of integrally rotating a rotating shaft unit with a rotator without transmitting an excessively large resistance of the rotator to the rotating shaft unit. SOLUTION: This connecting structure is obtained by bringing contact surfaces of the rotating shaft unit and the rotator into pressure contact and engaging both with a prescribed pressing force so as to be integrally rotatable and connecting both so that the pressure contact surface of the rotation shaft body slides relatively to the pressure contact surface of the rotator when the rotational resistance of the rotator exceeds a prescribed value. The apparatus for cutting trees and plants using the connecting means is capable of bringing the pressure contact surfaces of the cutter rotating shaft unit with a cutter unit into pressure contact and engaging both with the prescribed pressing force so as to be integrally rotatable and engaging both so as to slide the pressure contact surface of the cutter rotating shaft unit relatively to the pressure contact surface of the cutter unit when the rotational resistance of the cutter unit exceeds the prescribed value and so as to integrally rerotate the cutter rotating shaft unit with the cutter unit when the rotational resistance is reduced to the prescribed value or below.