上推式快锻液压机活动横梁转动自锁条件研究  

Rotating Self-locked Condition Research of the Pushing High-speed Forging Hydraulic Press' Movable Beam

作　　者：刘艳妍[1] 杨晋[1] 马学鹏 胡振宇[1] 

机构地区：[1]兰州交通大学机电工程学院,兰州730070 [2]兰州兰石重工有限公司,兰州730050

出　　处：《机械工程学报》2014年第8期66-72,共7页Journal of Mechanical Engineering

基　　金：国家科技支撑计划(2007BAF28B01);国家自然科学基金(51265022)资助项目

摘　　要：针对上推式快锻液压机,分析工作缸支撑球铰的摩擦阻力矩和摩擦圆半径,研究采用单、双球铰结构时支撑球铰对工作缸柱塞的侧推力,明确液压机结构参数对柱塞侧推力的影响因素。综合工作缸、支撑球铰和活动横梁的结构影响,确定活动横梁处于转动自锁状态时,锻造偏心距所应满足的条件,明确液压机结构参数与活动横梁自锁条件的内在关系。以国产上推式快锻压机系列产品和部分进口设备的结构参数为依据,计算满足活动横梁自锁条件的锻造偏心距,分析活动横梁在偏心锻造时的状态和工作缸支撑球铰在液压机工作中的作用。通过仿真分析,进一步验证在偏心锻造工况下的活动横梁转动自锁状态,为大型双柱式自由锻造液压机研究和中小型液压机优化设计提供理论依据。Aiming at the pushing high-speed forging hydraulic press, the frictional resisting torque and friction radius of supporting spherical hinge in the working cylinder is analyzed, the supporting spherical hinge＇s side thrust to the working cylinder＇s plunger with single and double spherical hinges structures is studied and influencing factor of hydraulic press＇ structure parameter to the plunger＇s side thrust is determined. By synthesizing the structure influences of working cylinder, supporting spherical hinges and movable beam, the conditions the forging eccentricity should meet when the movable beam is in rotating self-locked condition and the internal relations between hydraulic press＇ structure parameter and movable beam＇s self-locked condition can be determined. Base on the structure parameter of domestic pushing high-speed forging hydraulic press and some import devices, the forging eccentricity that meets the movable beam＇s self-locked conditions is calculated and the working conditions of movable beam in eccentric forging and the effect of working cylinder＇s supporting spherical hinge in the hydraulic press＇ operation is analyzed. By simulated analysis, the movable beam＇s rotating self-locked condition in eccentric forging is further verified to provide theoretical basis to the research of large scale double column free forging hydraulic press and the optimization design of medium and small scale hydraulic press.

关 键 词：快锻液压机 主机本体 活动横梁 转动自锁条件 

分 类 号：TG315[金属学及工艺—金属压力加工]