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江苏大力神链传动有限公司 技术部, 江苏 泰州 225324
刁中华(1969— ),男,江苏泰兴人,机械工程师;研究方向为模具设计、机械工程;1041855563@qq.com。
纸质出版日期:2023-07-15,
收稿日期:2022-05-24,
修回日期:2022-06-30,
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刁中华,刘锋,唐传昌.提高斗提机链条链板疲劳强度的挤孔试验[J].机械传动,2023,47(07):126-135.
Diao Zhonghua,Liu Feng,Tang Chuanchang.Extrusion Hole Test for Improving Fatigue Strength of the Chain Plate of Bucket Lift[J].Journal of Mechanical Transmission,2023,47(07):126-135.
刁中华,刘锋,唐传昌.提高斗提机链条链板疲劳强度的挤孔试验[J].机械传动,2023,47(07):126-135. DOI: 10.16578/j.issn.1004.2539.2023.07.018.
Diao Zhonghua,Liu Feng,Tang Chuanchang.Extrusion Hole Test for Improving Fatigue Strength of the Chain Plate of Bucket Lift[J].Journal of Mechanical Transmission,2023,47(07):126-135. DOI: 10.16578/j.issn.1004.2539.2023.07.018.
高速重载斗式提升机链条,在交变载荷作用下,经过几十万次甚至一百万次以上冲击,最后的失效形式大部分是链板疲劳断裂,而国内外尚未见此类链条疲劳试验机的报道。开展链条链板的受力分析、挤孔后的弹塑性分析、残余应力的分析以及弹塑性状态下的位移计算等,为进行实际工况试验提供了理论依据;设计不同过盈量的挤孔芯棒加工链板,并对相关数据进行统计分析,进一步探究了挤孔过盈量的范围;对一定过盈量的挤孔链板进行拉伸试验,验证了链板的抗拉强度是否会受到影响。
Under the alternating load
the chain of high-speed heavy-duty bucket hoist passes through hundreds of thousands or more shocks
and the final failure mode is mainly chain plate fatigue fracture. There is no report on this kind of chain fatigue tester at home and abroad. Through force analysis of chain plate
theoretical basis is provided for elastic-plastic analysis after extrusion
analysis of residual stress
calculation of displacement under elastic-plastic state
and actual working condition test etc. Through the design of extruded-hole mandrel with different interference
statistical analysis is carried out on relevant data to further explore the range of interference of extruded holes
and tensile test is carried out on extruded-hole chain plate with certain interference to verify whether the tensile strength of chain plate will be affected.
高速重载链板疲劳弹塑性残余应力挤孔芯棒
High speed and heavy loadChain plateFatigueElastic-plasticResidual stressExtruded hole mandrel
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