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起重滑輪組鋼絲繩的纏繞方法

文章出處:未知作者:admin人氣:發表時間:2016-05-16 11:30【

        起重滑車按輪數的多少分為單門滑車、雙門滑車和多門滑車。按滑車與吊物的連接方式可分為吊鉤式滑車、鏈環式滑車、吊環式滑車和吊架式滑車四種。
        起重滑車組鋼絲繩穿繞方法主要有兩種“順穿法和花穿法”
 
a、花穿法
       在滑車組滑輪數量較多,又用一臺卷揚機牽引時可用花穿法,用以改善滑車組的工作條件并降低抽出頭的拉力,還可保證滑車組受力均勻而起吊平穩。
b、順穿法
       順穿法就是將繩索的一段按順序逐個橈骨定滑車和動滑車各滑輪的一種簡單穿繩方法,視卷揚機的臺數不同,可抽出單頭,也可有一個不轉動的平衡滑輪而抽出雙頭,單頭順穿法會因各段繩頭,單頭順穿法會因各段繩索受力遞增,引出端受力最大,從而易造成滑車歪斜。此種穿繞方法雖有穿繞簡單容易的優點,但宜用于4個滑輪以下的滑車組。而雙抽頭順穿法則不但能避免滑車發生歪斜,而且工作平穩,減少阻力,加快吊裝速度。
 

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