Hydrostatic scraper wheel drive
    1.
    发明授权
    Hydrostatic scraper wheel drive 失效
    水泥刮刀轮驱动

    公开(公告)号:US3584698A

    公开(公告)日:1971-06-15

    申请号:US3584698D

    申请日:1968-07-23

    CPC classification number: B60K17/10 B60K17/356

    Abstract: A hydrostatic assist for driving the normally nondriven wheels of a vehicle in which the hydrostatic assist is controlled by slip in the drive train or the driven wheels for better tractive effort and most efficient operation. The slip sensed for control may be the slip between the normally driven wheels and the ground or the slip in a nonpositive coupling portion of the drive line between the vehicle engine and the driven wheels and controls the power which is supplied to the nondriven wheels through a hydrostatic loop.

    Automatic positioning systems for scraper elevators
    3.
    发明授权
    Automatic positioning systems for scraper elevators 失效
    自动定位系统用于刮刀电梯

    公开(公告)号:US3653132A

    公开(公告)日:1972-04-04

    申请号:US3653132D

    申请日:1970-07-30

    CPC classification number: E02F3/655 E02F3/64 E02F3/6481 E02F3/651

    Abstract: The elevator of a self-loading earth-moving scraper is moveable as a unit relative to the bowl thereof and automatic controls are provided which shift the elevator at predetermined stages in the operating cycle of the scraper. The automatic controls operate by sensing forces which react on other components of the scraper and which are indicative of the need for shifting the elevator. The elevator may, for example, pivot gradually upward as loading progresses or may be raised substantially prior to load ejection without requiring control of these movements by the operator.

    Abstract translation: 自载式土铲装置的升降机作为一个单元可相对于其碗移动,并且提供了自动控制装置,其将电梯在刮刀的操作循环中的预定阶段移动。 自动控制器通过感测对刮板的其它部件作出反应的力并且指示需要移动电梯来操作。 例如,升降机可以在装载进行时逐渐向上枢转,或者可以在加载弹出之前基本上升高,而不需要操作者控制这些运动。

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