DYNAMIC CHARACTERISTICS STUDY ON THE TWO-STAGE SAFETY VALVE USED ON HYDRAULIC SUPPORT UNDER IMPACT LOADING

被引：9
作者：
Zhao, Guochao [1 ]
Wang, Hui [1 ]
Song, Yuning [2 ]
Zhang, Changshuai [2 ]
机构：
[1] Liaoning Tech Univ, Sch Mech Engn, Fuxin, Peoples R China
[2] Yingkou Inst Technol, Dept Mech & Power Engn, Yingkou, Peoples R China
来源：
JOURNAL OF THEORETICAL AND APPLIED MECHANICS | 2020年 / 58卷 / 03期
基金：
中国国家自然科学基金;
关键词：
safety valve; impact loading; hydraulic support; dynamic characteristic; NUMERICAL-SIMULATION; MULTIPLE FACTORS; POWERED SUPPORT; DESIGN; FORCES;
D O I：
10.15632/jtam-pl/116576
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A two-stage linkage safety valve for hydraulic support is presented. Considering the hydraulic support is impacted, dynamic simulation of the column circuit with the two-stage safety valve subject impact loading was carried out, and the dynamic characteristics of the two-stage safety valve with different impact forms were studied. A rapid impact loading test rig was built to test the two-stage safety valve sample under impact loading. Simulation and experimental results indicate that the two-stage safety valve has high sensitivity and good unloading performance, it can realize fast and large flow unloading of the hydraulic support under different impact forms and pressures.
引用
收藏
页码：623 / 635
页数：13
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