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公开(公告)号：EP0032457A3
公开(公告)日：1981-12-09
申请号：EP81300149
申请日：1981-01-14
发明人： Brooman, David Henry
IPC分类号： B60P01/44 , B66F09/065 , B66F11/00
CPC分类号： B60P1/4442 , A61G3/062
摘要： Vehicle mounted load lifting and lowering apparatus comprises a parallel arm linkage (14,16,17) pivotally mounted at one end thereof on part (11) of a vehicle and arranged above the vehicle floor (13). A drop arm (18) is pivotally mounted on and extends below the other end of the parallel arm linkage. A platform (23) is mounted on the drop arm (18) at or adjacent the lower end thereof and is pivotable about a horizontal axis between a load carrying position and a stowed position. A ram (19) is expandable and contractable to rotate the parallel arm linkage between the first position in which the platform lies at ground level, a second position in which the platform is supported at the level of the vehicle floor and a third position in which, with the platform in the stowed position, the apparatus is stowed above the vehicle floor.
摘要翻译： 车载负载提升和降低装置包括在车辆的一部分（11）上枢转地安装在车辆的车辆地板（13）上方的平行臂联动装置（14,16,17）。 液压臂（18）枢转地安装在并联臂连杆的另一端上并在其下方延伸。 平台（23）在其下端或其下端处安装在下水臂（18）上，并且能够在承载位置和收起位置之间围绕水平轴线枢转。 柱塞（19）可膨胀和收缩以在平台位于地平面的第一位置之间旋转平行臂连杆，平台支撑在车辆底板的水平面处的第二位置和第三位置 在平台处于收起位置的情况下，将该装置存放在车辆地板的上方。
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公开(公告)号：EP0172524A3
公开(公告)日：1986-11-20
申请号：EP85110148
申请日：1985-08-13
发明人： Knight, David John
IPC分类号： B66F09/22 , B66F09/065
摘要： A method of operating a boom (10) which comprises an elongate member (11) mounted on a base (12) for pivotal movement about a first axis (13) transverse to the axis of the elongate member (11), first fluid operated power means (20) mounted between the base (12) and the elongate member (11) to control raising and lowering of the member (11) about the first axis (13), an implement (15) mounted at one end of the member (11) for pivotal movement about a second axis (18) transverse to the axis of the elongate member (11). second fluid operated power means (24) comprising a double acting ram having a cylinder (25) and plunger (26) slidable therein, mounted between the implement (15) and the member (11) to control movement of the implement (15) about the second axis (18), means to feed fluid under pressure to and from the first fluid operated power means (20) along first feed lines (27a, 27b) via a first operating valve (28), means to feed fluid under pressure to and from the second fluid operated power means (24) along second feed lines (21a, 21b) via a second operating valve (32), a displacement means (35) comprising a further double acting fluid operated ram connected between the member (11) and the base (12) to sense movement of the member (11) about the first axis (13), fluid lines (39a, 39b) from the displacement means (35) to the second fluid operated power means (24) to transmit a signal to the second fluid operated power means (24) to cause the second fluid operated power means (24) to operate to maintain the orientation of the implement (15) relative to the base (12) as the implement (15) is raised and lowered on the member (11), the method including the steps of providing fluid under pressure to the displacement means (35) during raising of said one end of the elongate member (11), whereby said displacement means (35) contributes to the raising of said one end of the member (11).
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3.发明公开
公开(公告)号：EP0119968A3
公开(公告)日：1985-08-07
申请号：EP84830072
申请日：1984-03-16
发明人： Oldani, Gaetano
IPC分类号： B66F09/065 , B64F01/22
CPC分类号： B64F1/22 , B62D51/005 , Y10S180/904
摘要： The tractor comprises a platform (1) mounted on three wheels, one of which is a drive and steering wheel, and having pivotally mounted thereon a saddle member (4) having shaped uprights (5, 5') which form a supporting structure for a hydraulic jack (6) of the double-acting type the piston rod (7) whereof has a yoke (8) attached thereto, the two legs of the yoke (8') being adapted to securely engage with the front wheel of a helicopter to be towed so as to drag the wheel along the saddle member (4).
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