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    • 33. 发明授权
    • Beltless swingarm mower
    • 无带摇臂割草机
    • US4573306A
    • 1986-03-04
    • US165220
    • 1980-07-01
    • Alexander SmithBurton D. Baggs
    • Alexander SmithBurton D. Baggs
    • A01B39/16A01D34/86A01D75/18
    • A01B39/166A01D34/863A01D34/73
    • A multiple mower arrangement for use on a tractor, comprising a principal mower having at least one rotary blade. A power shaft extends approximately the full lateral width of the principal mower, and delivers power to the rotary blades of such mower. A swingarm mower equipped with a rotary blade is hingedly supported by a hollow arm on the outboard end of the principal mower, with the arm being in turn supported by a hollow hinge. A rotary power shaft extends through the arm and hinge, such that rotary power can be effectively transmitted without the use of belts from the power shaft to the blade of the swingarm mower. A bias arrangement normally biases the swingarm mower into an outwardly extending operative position, with such bias being overcome at such time as the swingarm mower contacts a tree, fencepost, or other fixed object, with power being continuously supplied to the blade of the swingarm mower throughout its full range of operating positions. Advantageously, the angle the swingarm mower bears to the principal mower may be readily and selectively adjusted.
    • 一种用于拖拉机的多重割草机装置,包括具有至少一个旋转叶片的主割草机。 动力轴大致延伸主要割草机的整个横向宽度,并向这种割草机的旋转叶片输送功率。 装备有旋转刀片的摆臂式割草机由主要割草机的外侧端部的中空臂铰接地支撑,臂又由中空铰链支撑。 旋转动力轴延伸穿过臂和铰链,使得旋转动力可以有效地传递,而不需要使用从动力轴到摆臂割草机的叶片的皮带。 偏置装置通常将摆臂割草机偏向向外延伸的操作位置,在摆臂割草机接触树木,栅栏杆或其他固定物体的时候克服了这种偏差,其中功率被连续供应到摆臂割草机的叶片 在其全系列的经营职位。 有利地,摆臂割草机承受主割草机的角度可以容易且有选择地调节。