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60kg／m钢轨提速单开道岔共有以下四个品种：混凝土岔枕固定型辙叉单开道岔；混凝土岔枕可动心轨撤叉单开道岔；木岔枕固定型辙叉单开道岔；木岔枕可动心轨辙叉单开道岔。提速道岔平面及结构设计涉及到不少尚属空白但又必须立足国内攻关的制造工艺。山桥厂、宝桥厂及丰桥厂在提
60kg / m rail speed single-turnout has the following four varieties: single-turnout of concrete switchboard fixed frog; single-turnout of concrete sleeper with movable hearths; single turnout with fixed-frog switch; Pillow movable rail frog single turnout. Speed up the turnout plane and structural design involves a lot of still blank but must be based on domestic research and manufacturing process. Shan Qiao plant, Bao Qiao plant and Fengqiao plant mention