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    • 7. 发明授权
    • Road construction apparatus
    • 道路施工设备
    • US3791753A
    • 1974-02-12
    • US3791753D
    • 1972-03-27
    • WIBAU GMBH
    • RYMSA K
    • E01C19/48E01C19/00
    • E01C19/4853
    • The present road construction apparatus has a frame supported plank extending across the road to be constructed for installing a road forming composition in a road bed. The frame and installing plank or bar are supported on a carriage and relative to each other in such a manner that the plank may be raised and lowered as a unit or each plank end may be raised and lowered independently of the other plank end. In addition the plank is shiftable back and forth horizontally across the length of the road. The operation of the plank is accomplished by sensor responsive power means which may also be operator controlled.
    • 现在的道路施工装置具有延伸穿过道路的框架支撑板,用于在路床中安装道路形成组合物。 框架和安装板或条被支撑在滑架上并且相对于彼此支撑,使得板可以作为一个单元升高和降低,或者每个板端可以独立于另一个板端端升高和降低。 此外,木板可以在道路的整个长度上水平地前后移动。 板的操作由传感器响应功率装置实现,其也可以由操作者控制。