热轧板材单飞轮飞剪齿轮箱受力分析及改进

Improvement and Force Analysis of Flying Shear Gearbox with Single Flywheel for Hot- rolled Plate

分析了曲柄连杆式飞剪的四连杆机构原理,推导该机构最大剪切力矩的一般计算过程;按照功能转换原理计算一个完整剪切周期齿轮箱内部功率流分配;在此基础上对飞剪齿轮箱进行FEM受力计算并进行相应改进设计。工程实例计算结果表明,单飞轮飞剪齿轮箱箱体受力具有非对称特性,改进后的齿轮箱具有更好的刚性分布及可靠性。

The principle of crank and connecting rod mechanism for the flying shear gear box is analyzed,and a general model of maximum shear torque is deduced for this mechanism. The power flow of the transmission unit is also distributed according to the work- energy transformation principle in a full shear cycle. On this basis,the FEM force calculation and improvement of the flying shear gear box are carried out. The case study indicates that shear gearbox with single flywheel has the asymmetric characteristic,and the improved gearbox has better rigidity distribution and reliability.