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    • 1. 发明授权
    • Load balancing mechanism
    • 负载平衡机制
    • US5037267A
    • 1991-08-06
    • US208237
    • 1988-06-17
    • William G. WarnerJoseph G. Tranchida
    • William G. WarnerJoseph G. Tranchida
    • B25J5/02B25J19/00B66C23/00
    • B25J19/0012B25J5/02B66C23/005Y10S414/13
    • A load balancing mechanism (10) disclosed includes an arm (12) including first and second arm portions (14,26). A support post (22) is rotatable about its vertical axis A and supports arm (12) by first arm portion (14) for pivotal movement in a vertical plane and also for rotational movement about axis A. First arm portion (14) includes parallel spaced members (16,16') defining a parallel linkage arrangement. A piston and cylinder balancing arrangement (38) connects post (22) and first arm portion (14) allowing upward and downward pivotal movement of arm (12) and is responsive to such upward and downward pivotal movement to provide balancing of a load thereon. The second arm portion (26) can be longitudinally moved relative to a second mount (32) to increase or decrease the length of arm (12) without having to change the force applied via balancing arrangement (38) to maintain balancing of the load.
    • 所公开的负载平衡机构(10)包括包括第一和第二臂部分(14,26)的臂(12)。 支撑柱(22)可围绕其垂直轴线A旋转,并且通过第一臂部分(14)支撑臂(12),以在垂直平面中枢转运动,并且还围绕轴线A旋转运动。第一臂部分(14)包括平行 间隔的构件(16,16')限定了平行的连接装置。 活塞和气缸平衡装置(38)连接柱(22)和第一臂部分(14),允许臂(12)的向上和向下枢转运动,并且响应于这种向上和向下的枢转运动以提供其上的负载的平衡。 第二臂部分26可以相对于第二安装件32纵向移动,以增加或减小臂部12的长度,而不必改变通过平衡装置38施加的力,以保持负载的平衡。