The working principle of the tong frame for dual-parallel four-rod mechanism is elaborated. The running mechanism of the tilt device for the elevator is analyzed. In allusion to the design requirements, the strokes of parallel lifting cylinder and tilting cylinder were calculated. The result of putting into production shows that the structure is reasonable and its running is smooth. The design can provide a reference for the similar design.%阐述了双平行四连杆机构钳架的工作原理,分析了其升降及倾斜机构的运动机理,并针对设计要求,计算出平行升降缸及倾斜缸的行程.投产情况表明此结构合理、运行安全可靠,为以后设计提供参考.
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