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    Φ219 mm頂管機芯棒固定扣瓦的改進設計

    Design for Improvement of Fixed Buckle for Φ219 mm Push Bench Pipe Mill

    • 摘要: 針對Φ219 mm頂管機芯棒固定扣瓦結(jié)構復雜、加工成本高、更換芯棒規(guī)格工作量大和花費時間長等問題，對固定扣瓦的結(jié)構進行改進，將原3塊單獨的固定扣瓦改為整體固定扣瓦。使用結(jié)果表明：設計的整體固定扣瓦，可極大地減少更換芯棒規(guī)格時拆裝扣瓦螺栓的數(shù)量，縮短生產(chǎn)準備時間，降低勞動強度，提高作業(yè)效率；整體固定扣瓦與推桿之間的包圍區(qū)域增加，顯著提高了芯棒在頂管過程中的穩(wěn)定性；完全適應多品種、小批量的生產(chǎn)要求。

       

      Abstract: Fixed buckle of the Φ219 mm push bench pipe mill has complex structure and high processing cost, and when changing the mandrel size, heavy workload and high time consumption are required.Accordingly the structure of the fixed buckle is improved, getting the original three individual fixed buckles modified into a monolithic structural one.Operation result of the designed fixed buckle shows advantages such as tremendous reduction of quantity of the buckle bolts as dismounted when changing the mandrel size, shortening of the time for production preparation, cutting down the labor intensity, and enhancement of the operation efficiency.Moreover since the surrounding area between the one-piece fixed buckle and the pushing rod is increased, the stability of the mandrel as running during the pushing process is significantly improved.The modification shall make the pipe mill fully adapting to production with multi types and small lots.

       

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