方坯连铸机翻转冷床液压控制阀台的改进

Improvement about Tilting Cooling Bed Hydraulic Valve of Billet Continuous Casting Machine

翻转冷床是方坯连铸生产线必不可少的设备，其液压缸的速度控制和同步控制是设备平稳运行的关键。介绍液压驱动式翻转冷床的结构和工作特点，以某工程为例，分析冷床运行存在的问题和原因，提出采用比例阀和同步马达开环控制冷床液压缸的改进方案，使翻转冷床液压缸达到实时调速和高精度的同步效果。

Tilting cooling bed is essential equipment for billet continuous casting line and the hydraulic cylinder speed control and synchronization control is the key to the smooth operation of the equipment. It introduces the hydraulic tilting cooling bed structure and work characteristic, taking a project as an example, analyzes the problems and reasons existing in cooling bed operating, puts forward using proportional valve and synchronous motor open-loop control cooling bed hydraulic cylinder as the improved scheme, hydraulic cylinders of the tilting cooling bed achieve real-time speed control and high precision synchronization effect.