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钢筋切断机在工作行程时,能量的来源主要靠飞轮降速释放出贮存的功能获得。据有关资料介绍,飞轮速度降低10％时,供给的能量为其总能量的19％;降低20％时为36％;降低30％时为51％。由此可见速度降低10％比降低20％其轮出能量少近一半。设计计算时,应力求飞轮速度降尽可能大些,但是,当飞轮速度降低时,电机转速也随着降低,电机工作电流将成比例增加,促使电机工作情况恶化。因此,飞轮转速降(即不均匀系数δ)的取值,受到电机性能(即过载条件和发热条件)的限制。
When the steel cutter is in the working stroke, the energy source is mainly obtained by the flywheel decelerating and releasing the stored function. According to relevant data, when the speed of the flywheel is reduced by 10%, the energy supplied is 19% of the total energy; when it is reduced by 20%, it is 36%; when it is reduced by 30%, it is 51%. It can be seen that the speed reduction by 10% is less than half of the turn-out energy by a 20% reduction. In the design calculations, the speed seeks to reduce the speed of the flywheel as much as possible. However, when the speed of the flywheel decreases, the motor speed also decreases, and the operating current of the motor increases proportionally, which causes deterioration of the motor working condition. Therefore, the speed drop of the flywheel (ie, the non-uniform coefficient δ) is limited by the performance of the motor (ie, the overload condition and the heat generation condition).