Bridge swivel construction method and device based on pinion synchronous traction system: Fid-Bau Portal

Bridge swivel construction method and device based on pinion synchronous traction system

XIN YU / WANG ZUOCAI / LI SHUO / YANG WEIMIN

The invention discloses a bridge swivel construction method and device based on a pinion synchronous traction system, and the device is based on a spherical hinge for bridge swivel construction, a traction cableway at the outer edge of a turntable is designed into a gear-shaped slideway, and the periphery of the turntable is synchronously dragged to rotate by a pinion system with rated power; a traction system in common swivel construction is combined with a gear. The device is suitable for bridge swivel construction under various conditions, the swivel speed can be accurately controlled through the fixed rotating angle of the single gear after transformation, and construction safety is guaranteed while construction precision is improved. Meanwhile, the number of the pinions can be flexibly configured according to the total traction force of the swivel, and the defect that local stress is too large due to the small contact area between the gears of an existing rack track system is overcome. In addition to the advantages, the device also overcomes the defect of one-way traction, if the rotation angle exceeds the limit, the gear applies force in the opposite direction, and the maneuverability in the construction process is optimized.

本发明公开了一种基于小齿轮同步牵引系统的桥梁转体施工方法及装置，该装置以桥梁转体施工的球铰为基础，将转盘外边缘处的牵引索道设计为齿轮状滑道，周围利用额定功率的小齿轮系统同步牵引转盘转动，将普通转体施工中的牵引系统与齿轮结合。该发明适用于多种情况下的桥梁转体施工，改造后可以通过单个齿轮的固定转动角度来精确控制转体速度，在提高施工精度的同时，也保证了施工安全。同时可以根据转体总牵引力的大小灵活配置小齿轮数量，避免了现有齿条轨道系统因齿轮间接触面积小而引起局部应力过大的缺点。除了上述所说的优点，该装置也克服了单向牵引的短板，若转动角度超限，齿轮反方向施力即可，优化了施工过程中的机动性。

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