| 摘要 |
The subject of the invention is a system of positioning the cutting unit of a rotary mower with a central suspension system. The positioning system of the rotary mower's cutting unit equipped with the central suspension system comprising a rotor arm (1) connected to the carrying arm to which the cutting unit (14) is attached. Said cutting unit (14) can be raised to the desired position by means of a hydraulic cylinder (15) and can be blocked by the locking mechanism controlled by cords (5), characterized in that the locking element is a ratchet mechanism located on the rotor arm (1). The ratchet mechanism includes three rotationally mounted ratchets (3, 10, 12), where the lower one (10) works with the upper one (3) by sliding over its teeth (3A) and (3B). The ratchet which is at the end of the carrying arm works with the other ratchets (3) and (10), depending on the positioning of the cutting unit (14). |
