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    • 1. 发明授权
    • Gantry crane with plural hoist means
    • 龙门式起重机具有多重起重机构
    • US4027800A
    • 1977-06-07
    • US637230
    • 1975-12-03
    • Karl L. Polen
    • Karl L. Polen
    • B66C15/02B63B27/12B63B27/16B66C19/00B66D3/04B66C5/02
    • B63B27/36B66C19/00B66D3/04
    • A gantry crane and gantry crane reeving are provided having two pairs of drums on each side of said gantry, an upper sheave assembly on the gantry above each drum, each drum having a pair of independent cables reeving from the drum to said upper sheave assembly above it on the gantry, a lower relatively movable sheave assembly below each upper sheave assembly, one cable from each pair of cables passing over one sheave of the upper sheave assembly and downward around the lower sheave assembly and back over the upper sheave assembly and dead ending at the lower sheave assembly, the other cable from each pair of cables passing over a sheave of the upper sheave assembly across the gantry to the opposite upper sheave assembly on the other side of said gantry and downwardly to the lower sheave assembly on said other side and back over the said opposite upper sheave assembly and dead ending at the said opposite lower sheave assembly.
    • 提供龙门式起重机和龙门式起重机,在所述机架的每一侧设有两对滚筒,在每个滚筒上方的龙门架上设有上滑轮组件,每个滚筒具有一对独立的缆绳,从滚筒向上滑轮组件上方 在机架上,在每个上滑轮组件下面的下部可相对移动的滑轮组件,来自每对电缆的一根电缆穿过上滑轮组件的一个滑轮,并且向下绕着下滑轮组件并且向上穿过上滑轮组件并且死点 在下滑轮组件处,来自每对电缆的另一根电缆通过上滑轮组件的滑轮跨过机架,在所述机架的另一侧向上相对的上滑轮组件,并向下延伸到另一侧的下滑轮组件 并且在所述相对的上滑轮组件的后面并且在所述相对的下滑轮组件处死死。
    • 3. 发明授权
    • Gantry cranes
    • 龙门起重机
    • US4094493A
    • 1978-06-13
    • US757059
    • 1977-01-05
    • Karl L. Polen
    • Karl L. Polen
    • B66C15/02B63B27/12B63B27/16B66C19/00B66D3/04B66C23/60
    • B63B27/36B66C19/00B66D3/04
    • A gantry crane and gantry crane reeving are provided having two pairs of drums on each side of said gantry, an upper sheave assembly on the gantry above each drum, each drum having a pair of independent cables reeving from the drum to said upper sheave assembly above it on the gantry, a lower relatively movable sheave assembly below each upper sheave assembly, one cable from each pair of cables passing over one sheave of the upper sheave assembly and downward around the lower sheave assembly and back over the upper sheave assembly and dead ending at the lower sheave assembly, the other cable from each pair of cables passing over a sheave of the upper sheave assembly across the gantry to the opposite upper sheave assembly on the other side of said gantry and downwardly to the lower sheave assembly on said other side and back over the said opposite upper sheave assmbly and dead ending at the said opposite lower sheave assembly.This application is a division of my co-pending application Ser. No. 637,230, filed Dec. 3, 1975 now U.S. Pat. No. 4,027,800 issued June 7, 1977.
    • 提供龙门式起重机和龙门式起重机,在所述机架的每一侧设有两对滚筒,在每个滚筒上方的龙门架上设有上滑轮组件,每个滚筒具有一对独立的缆绳,从滚筒向上滑轮组件上方 在机架上,在每个上滑轮组件下面的下部可相对移动的滑轮组件,来自每对电缆的一根电缆穿过上滑轮组件的一个滑轮,并且向下绕着下滑轮组件并且向上穿过上滑轮组件并且死点 在下滑轮组件处,来自每对电缆的另一根电缆通过上滑轮组件的滑轮跨过机架,在所述机架的另一侧向上相对的上滑轮组件,并向下延伸到另一侧的下滑轮组件 并且在所述相对的下滑轮组件的上方滑过所述相对的上滑轮并且死点。