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    • 82. 发明授权
    • Grazing regulator
    • 放牧调节器
    • US4144844A
    • 1979-03-20
    • US859690
    • 1977-12-12
    • William H. Crumpacker
    • William H. Crumpacker
    • A01K15/00A01K25/00
    • A01K25/00A01K15/00
    • A grazing regulator is mountable to the head of a grazing animal to automatically prevent the animal from eating short grass, while allowing the animal to graze on taller grass. The regulator includes a rigid frame that is mounted on the animal's head where it pivotably mounts a pair of rocker arms. A grazing plate is fixed to the lower ends of the rocker arms and is pivotable in unison with the arms between an operative position where the plate substantially overlaps the animal's mouth to prevent eating, and an inoperative position wherein the plate is pivoted clear of the animal's mouth. Movement of the plate between these positions is effected by an actuator rod slidably mounted to the framework. A lower end of the actuator rod protrudes below the grazing plate to engage the ground and slide upwardly as the animal moves its head toward the ground surface. The upper end of the rod is connected to an upper end of the rocker arm. It causes pivotal movement of the rocker arm and grazing plate. Therefore, the plate will automatically pivot to the operative position when the animal's head reaches a selected elevational position.
    • 放牧调节器安装在放牧动物的头部,以自动防止动物吃短草,同时允许动物在较高的草地上吃草。 调节器包括安装在动物头部上的刚性框架,其中可枢转地安装一对摇臂。 放牧板被固定到摇臂的下端,并且在臂基本上与动物嘴部重叠的操作位置之间与臂一起枢转以防止进食,以及不工作的位置,其中板被摆动离开动物的 口。 板在这些位置之间的运动由可滑动地安装到框架的致动器杆实现。 致动器杆的下端突出在放牧板的下方,以接合地面并随着动物将其头部朝向地面移动而向上滑动。 杆的上端连接到摇臂的上端。 它引起摇臂和放牧板的枢转运动。 因此,当动物的头部到达所选择的高度位置时,板将自动地枢转到操作位置。