| 摘要 |
<p>Mower, positioned on a lifting arm (25) consists of at least one cutter-bar with motor-driven blades. The lifting arm (25) mounted on the front of the machine on a lengthwise centre plane, is hinged to pivot-arms (12, 13) forming a parallelogram, the end of which can be moved upwards and backwards. Pivot arms are suspended so that their bottom ends support two mower-shoes, the top ends are hinged to a cross-bar fixed to the front end of the lifting arm (25). At least one of the pivot arms has a second, parallel pivot-arm by which the height of the mower is adjustable to any level. At least one of the pivot arms is curved. The double-bladed cutter is driven by a hydraulic motor connected by flexible tubes to the hydraulic pump on the machine. The pivot arm may be a bracket shaped frame (112) the middle of which is a box (126) with front (124) and back (125) downward-pointing arms. Bearings (127) for a crank-shaft (123), an intermediate shaft (191) and links (130, 131) for two pivot-arms (129) are positioned on the arms (124, 125).</p> |
