| 摘要 |
<p>The attachment frame consists of a middle part which can be fitted to a tractor, and two side parts which can be pivoted on the middle part and are operated via a drive cylinder. One end of each of two operating arms (6) is hinged to the middle part (3) and side parts (1). The other ends of the arms have a common hinge pin (9), on which one end of the drive cylinder (10) engages. The operating arms (6) are hinged below the support frame and the pivot points (2) lie between the frame side parts (1) and middle part (3) above the support frame.</p> |
