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113 条记录 (耗时 0.014 秒)

    Shovel attachment means for hydraulic excavator
    51.
    发明授权
    Shovel attachment means for hydraulic excavator 失效

    公开(公告)号：US4143778A

    公开(公告)日：1979-03-13

    申请号：US897715

    申请日：1978-04-19

    申请人： Karl H. Ullmann

    发明人： Karl H. Ullmann

    IPC分类号： E02F3/30 ,  E02F3/38 ,  E02F3/42 ,  E02F9/16

    CPC分类号： E02F3/32 ,  E02F3/306 ,  E02F3/308 ,  E02F3/38 ,  E02F3/382 ,  E02F3/425 ,  E02F9/16

    摘要： A large hydraulic excavator machine for mining operations comprises attachment means for operatively connecting the shovel to the machine frame so that no bending moment is imposed on the component parts of the attachment means during operation of the excavator. The attachment means comprises components including a stroke arm movable by an extendable and retractable hydraulic stroke arm cylinder; and a shovel arm assembly on which the bucket is mounted and which is movable by an extendable and retractable hydraulic shovel arm cylinder. The stroke arm and stroke arm cylinder are pivotally connected at their lower ends to spaced apart points on the excavator frame and are pivotally connected at their upper ends to a common point. The upper end of the shovel arm assembly is also connected to the common point. The shovel arm cylinder has one end pivotally connected to the machine frame (or to an extension therefrom) and has its other end pivotally connected to the shovel arm assembly. The lattice-like arrangement of the components and the location of the points of attack of the stroke arm cylinder and the shovel arm cylinder prevent bending moments from being imposed on the components.

    Mechanically extendible telescoping boom
    53.
    发明授权
    Mechanically extendible telescoping boom 失效
    机械可伸缩的电动升降机

    公开(公告)号：US3666120A

    公开(公告)日：1972-05-30

    申请号：US3666120D

    申请日：1970-02-04

    申请人： NASA

    发明人： BACHLE WILFRED H

    IPC分类号： B66C23/687 ,  B66C23/70 ,  E02F3/30 ,  B66B17/00

    CPC分类号： E02F3/306 ,  B66C23/703

    摘要： A crane capable of being employed as a back-hoe for digging, gathering, collecting or recovering bulk materials, such as soil particles or the like, characterized by a boom assembly including a plurality of telescoping boom segments pivotally supported on a rotatable base and including a plurality of flexible tape members interconnecting the segments and adapted to be selectively tensioned for imparting selective rectilinear displacement to the segments for thereby telescopingly elongating and contracting the boom assembly, a feature of the invention being a furlable tape adapted to be flattened and wound about a tape take-up drum as the boom assembly is contracted and deployed into an elongated tubular conduit extending axially between the opposite ends of the boom assembly as it is elongated, whereby a variable length fluid conduit is provided between the distal end and the base of the boom assembly.

    摘要翻译： 能够被用作挖掘，收集或收集大量材料（例如土壤颗粒等）的背锄的起重机，其特征在于，悬臂组件包括枢转地支撑在可旋转底座上的多个伸缩臂段，并且包括 多个柔性带构件，其互连该段并且适于被选择性地张紧，以向该段施加选择性的直线位移，从而可伸缩伸缩和收缩悬臂组件。本发明的一个特征是可折叠的带， 当吊杆组件被收缩并且展开在细长的管状导管中时，其在长臂组件的相对端部之间轴向地延伸，并且在其伸长的过程中，可变长度的流体导管设置在臂的远端和底座之间 吊臂总成。

    Demolition and scooping machine
    54.
    发明授权
    Demolition and scooping machine 失效
    拆卸和割草机

    公开(公告)号：US3586113A

    公开(公告)日：1971-06-22

    申请号：US3586113D

    申请日：1969-03-19

    申请人： GRANT INC LOUIS A

    发明人： GRANT LOUIS A

    IPC分类号： E02F3/30 ,  E02F3/38 ,  E02F3/42 ,  E02F3/96 ,  E02F9/02 ,  E02F9/12 ,  E21C27/20 ,  E21C11/00

    CPC分类号： E02F3/32 ,  E02F3/306 ,  E02F3/38 ,  E02F3/964 ,  E02F3/966 ,  E02F9/022 ,  E02F9/121 ,  E21C27/20

    摘要： A demolition and scooping machine comprises a rigid supporting structure with a rotatable turntable mounted thereon. A clamp mechanism is provided for clamping the supporting structure to external supports. A boom assembly including an elbow section is pivoted on an upper surface of the turntable, and includes extensible boom structure pivoted at one of its ends to the outer end of the elbow section. Either a demolition tool or a scoop can be pivoted to the outer end of the extensible boom structure. The extensible boom structure and the elbow section are shaped such that the scoop or demolition tool can reach every point of at least the area directly beneath the supporting structure.