摘要
针对气动夹钳单元在制动阶段和缓解阶段存在压力迟滞问题,选取典型的气动夹钳单元,开展了在25、0、-40、-45℃环境温度下系统的迟滞特性试验,验证了气动夹钳单元在不同环境温度下压力迟滞变化规律。利用一阶线性拟合和二阶多项式拟合方法对试验数据进行分析,结合系统内耗功,提出了在设计阶段更为精确地确定气动夹钳单元气压与输出力值的关系公式。分析了制动缸和气动夹钳系统摩擦内耗所有影响阻力,并开展了部分结构设计优化,为进一步结构优化奠定了理论基础。
Aiming at the problem of pressure hysteresis in the braking phase and release phase of the pneumatic caliper unit,the typical pneumatic brake caliper unit is selected to carry out the hysteresis characteristic experiment of the system at the ambient temperature of 25℃,0℃,40℃and 45℃,and the variation law of pressure hysteresis of the pneumatic caliper unit at different ambient temperatures is verified.The first-order linear fitting and second-order polynomial fitting methods are used to analyze the experimental data.Combined with the power consumption in the system,a more accurate formula to determine the relationship between the air pressure and the output force of the pneumatic caliper unit is proposed in the design stage.The frictional internal friction of brake cylinder and pneumatic caliper system is analyzed,and some structural design optimization is carried out,which lays a theoretical foundation for further structural optimization.
作者
赵飞
ZHAO Fei(School of Electrical and Information,Zhenjiang College,Zhenjiang 212028 Jiangsu,China;CRRC Qishuyan Institute Co.,Ltd.,Changzhou 213011 Jiangsu,China)
出处
《铁道机车车辆》
北大核心
2024年第4期51-57,共7页
Railway Locomotive & Car
基金
江苏省产业前瞻与共性关键技术资助项目(BE2017121)
镇江市产业前瞻与共性关键技术资助项目(GY2021002)。
关键词
气动夹钳
压力迟滞
数据拟合
设计优化
摩擦内耗
pneumatic clamp
pressure hysteresis
data fitting
design optimization
frictional internal friction
