| 摘要 |
A machine (10) for cutting concrete paving or like material is provided having a support frame structure (12), front and rear wheels (14 and 16) and a rotatable cutting blade (20). A pair of auxiliary wheels (32) are also provided between the front and rear wheels on a transverse axle (34) which is pivotally movable relative to the support frame structure (12) about a transverse shaft (30). In an operative position for cutting concrete the front wheels (14) are in engagement with the ground and the auxiliary wheels (32) raised above the ground. Subsequent pivotal movement of the axle (34) relative to the support frame structure (12) about axle (30) lowers the auxiliary wheels (32) into contact with the ground and raises the front wheels (14) above the ground so that the forward part of the support structure (12) is supported by the auxiliary wheels (32) when the machine is out of the cutting mode. The pivotally movable auxiliary wheels (32) provide greater ease of manoeuvrability out of the cutting mode. The operator can lift the rear wheels (16) off a pavement by means of handles (51) provided at the rear of the machine and realign the machine as required for the next cut. The front wheels (12) are disposed at a forward position close to the cutting blade (20) to provide greater stability in the cutting mode. |
