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    • 6. 发明申请
    • SELF-LEVELLING MOBILE SUPPORTING CHASSIS
    • 自助式移动支持套餐
    • WO99031962A1
    • 1999-07-01
    • PCT/AU1998/001060
    • 1998-12-22
    • B60G17/019A01D46/20A01D46/24B60G17/01G05D16/02
    • B60G17/01908B60G2200/13B60G2202/413B60G2300/06B60G2400/0511B60G2400/0512B60G2400/95B60G2800/019B60G2800/20
    • A work platform-supporting device is held by legs extendable by hydraulic rams and retractable by its own weight. A sensing device including a pendulum (43) attached by a stem (45) to a universal joint (46) controls the movement of the rams. Two pairs of control valves located at 90 DEG to each other are attached to the stem (45). One pair of control valves reacts to the pitch of the platform while the other pair reacts to the roll of the platform. These valves are attached to a hinge mechanism, which is connected to the stem by a ball joint (67). When the sensing device and the platform are level the valves are in a neutral position. When the platform becomes inclined the pendulum moves to a vertical position thus activating the valves. The valves allow hydraulic fluid to flow into the ram on the downhill side of the platform and the ram on the uphill side retracts allowing hydraulic fluid to return to the hydraulic fluid reservoir. The valves have built-in dampers and the pendulum is immersed in a viscous fluid (42).
    • 工作平台支撑装置由腿部支撑,可由液压柱塞延伸,并可通过自身重量缩回。 包括由杆(45)连接到万向接头(46)的摆锤(43)的感测装置控制公柱的移动。 位于杆(45)上的彼此相隔90度的两对控制阀连接。 一对控制阀对平台的间距做出反应,另一对控制阀与平台的辊反应。 这些阀连接到铰链机构,铰链机构通过球形接头(67)连接到杆上。 当感测装置和平台处于水平位置时,阀处于中立位置。 当平台倾斜时,摆锤移动到垂直位置,从而启动阀门。 阀允许液压流体在平台的下坡侧流入冲头,并且上坡侧的冲头缩回,允许液压流体返回到液压油箱。 这些阀具有内置的阻尼器,并将摆锤浸入粘性流体(42)中。