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    • 4. 发明授权
    • Running wheel
    • 跑步轮
    • US5758976A
    • 1998-06-02
    • US818292
    • 1997-03-14
    • Heinz LauseVincent Dreyer
    • Heinz LauseVincent Dreyer
    • B60B37/00B66C9/08F16C17/02
    • B60B37/00B66C9/08
    • A running wheel is slidably supported on a stationary axle between the axle and the bearing bore with a large bearing play and a small Hertzian stress. The axle has a circumferential section which is defined by its sector with a sector angle of less than 180.degree., wherein its radius of curvature is substantially equal to the radius of curvature of the inner wall of the bearing bore. In accordance with the desired bearing play, the radius of curvature of the remaining circumferential section of the axle is smaller than the radius of curvature of the bearing bore. The direction of the main stress acting upon the running wheel lies in the section of the central plane of the axle sector with the larger radius.
    • 行走轮可滑动地支撑在轴和轴承孔之间的固定轴上,具有较大的轴承间隙和小的赫兹应力。 轴具有由其扇形部分限定的圆周部分,其扇形角小于180°,其中其曲率半径基本上等于轴承孔内壁的曲率半径。 根据所需的轴承间隙,轴的剩余圆周部分的曲率半径小于轴承孔的曲率半径。 作用在行驶轮上的主应力的方向位于车轴部分的中心平面的较大半径的部分。
    • 7. 发明授权
    • Gantry crane
    • 龙门起重机
    • US4378072A
    • 1983-03-29
    • US159969
    • 1980-06-16
    • William S. ApplemanJames D. Sturgill
    • William S. ApplemanJames D. Sturgill
    • B66C5/00B66C5/02B66C9/08B66C19/00
    • B66C19/005
    • A gantry crane comprising a pair of spaced, parallel rectangular side frames each having top and bottom members and front and rear vertical members connected to the top and bottom members, a front cross beam rigidly connected to each of the side frames at the upper front corners thereof, and a rear cross beam pivotally connected to each of the side frames at the upper rear corners thereof, each of the side frames further including diagonal braces, ground engaging drive wheels mounted on the side frames at the lower corners thereof so that as the gantry crane traverses uneven ground, the wheels maintain ground contact as the rear cross beam pivots with respect to the side frames and the front cross beam absorbs the torsional stress.
    • 一种龙门起重机,其包括一对间隔开的平行矩形侧框架,每个侧框架具有顶部和底部构件以及连接到顶部和底部构件的前部和后部垂直构件,前横梁刚性地连接到在上前角的每个侧框架 以及在其后后角处枢转地连接到每个侧框架的后横梁,每个侧框架还包括斜撑架,安装在其下角处的侧框架上的地面接合驱动轮,使得作为 龙门起重机横过不平的地面时,车轮保持地面接触,因为后横梁相对于侧架枢转,前横梁吸收扭转应力。