摘要
为提高液压支架的工作稳定性和可靠性,增强活塞杆蕾形密封圈的密封性能,对液压支架蕾形密封圈的应力分布进行了研究。在研究中,基于泄漏量理论计算公式推导密封圈与活塞杆间接触应力分布对密封性能的影响,应用ANSYS有限元软件建立蕾形密封圈受力模型,并分析不同载荷工况下平均应力分布规律,以及预压缩量10%、外载荷30 MPa时密封圈与活塞杆间接触应力的分布规律。研究结果显示,在不同载荷工况下,蕾形密封圈的平均应力分布和密封性能始终满足要求,主唇口位置的密封圈与活塞杆间接触压力峰值和两侧的接触应力梯度变化可达到良好的密封效果。
In order to improve the working stability and reliability of the hydraulic support and enhance the sealing performance of the bud seal ring on piston rod,the stress distribution of the bud seal ring of hydraulic support was studied.In the investigation,the influence of the contact stress distribution between the seal ring and the piston rod on the seal performance was derived based on the theoretical calculation formula of the leakage rate,and the ANSYS finite element software was used to establish the stress model of the bud seal ring,and the regularities of mean stress distribution under different load conditions were analyzed,and the regularities of contact stress distribution between the seal ring and the piston rod were analyzed when the precompression is 10%and the external load is 30 MPa.The research results show that under different load conditions,the mean stress distribution and sealing performance of the bud seal ring can meet the requirements all the time.The peak contact pressure between the seal ring and the piston rod at the main lip position as well as the change of the contact stress gradient on both sides can form favorable sealing effect.
出处
《机械制造》
2020年第7期35-38,共4页
Machinery
基金
山西省面上自然基金资助项目(编号:201901D111298)。
关键词
液压支架
密封圈
应力
Hydraulic Support
Seal Ring
Stress
