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一,前言某初轧厂由于生产需要,拟将原有1600t双偏心浮动轴重锤平衡式钢坯剪(苏联产)改造为剪切力2000t,并将原采用的重锤平衡及弹簧压料改为液压方式。因此,曲轴仅需一个偏心即可。改造后的剪切机机构原理如图1所示。为了提高剪切力,相应地减小了曲轴偏心矩。由于液压平衡系统的动态特性对剪切机的工作性能影响很大,所以对其进行了分析,并根据本设计中的各具体参数进行了数字仿真。
First, a preliminary rolling mill due to production needs, intended to double the original 1600t double eccentric floating axis weight balance billet shear (USSR) into a shear force of 2000t, and the original balance of the hammer and the spring pressure expected to change Hydraulic way. Therefore, the crankshaft only needs one eccentricity. After the transformation of the shear mechanism as shown in Figure 1. In order to increase the shear force, the crankshaft eccentric moment is correspondingly reduced. Because the dynamic characteristics of the hydraulic balance system have a great influence on the working performance of the shear, it is analyzed and digitally simulated according to the specific parameters in this design.