发明名称 |
Universal bridge deck vibrating system |
摘要 |
A vibration system that fits on top of a conventional truss with minimal alteration. The system comprises a propulsion assembly powering a vibration assembly. The propulsion assembly comprises two parallel rails forming a lateral path between truss ends and supporting a mobile carriage. Each rail comprises abutting segments coextensively surmounting the truss. Each segment attaches at respective truss cross-beams to define a continuous runway for carriage movement. Each segment also defines a channel for a chain rack anchored at opposite truss ends. The carriage comprises an undercarriage supporting an offset platform. The undercarriage comprises a rail-spanning frame with supporting runway tracking wheels. A motor propels the carriage by turning an axle with terminal pinions entrained about the rack. The offset counterbalances the vibration assembly to reduce torsion. A coupling hitch protrudes from the platform opposite the offset to support the vibration assembly. The vibration assembly comprises an elevator that vertically displaces a gang of vibrators between deployed and retracted positions. The elevator comprises a hydraulic cylinder coaxially centered between two sleeves with sliding arms that couple the gang to the elevator. The gang comprises a plurality of quick-coupling pendulous vibrators across the truss front. A motor drives multiple vibrators via a split axle connected to several gearboxes in series. When deployed, the vibrator tip thrusts into the concrete and undulates rapidly for a selected time. Afterwards, the vibrators retract and the carriage moves to an adjacent vibrated sector of concrete until completely traversing the truss. They system may operate automatically or manually.
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申请公布号 |
US5988939(A) |
申请公布日期 |
1999.11.23 |
申请号 |
US19970884064 |
申请日期 |
1997.06.27 |
申请人 |
ALLEN ENGINEERING CORP. |
发明人 |
ALLEN, J. DEWAYNE;MCKEAN, MICHAEL W. |
分类号 |
E01C19/38;(IPC1-7):E01C19/38 |
主分类号 |
E01C19/38 |
代理机构 |
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主权项 |
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地址 |
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