Radial Strains of Double-layer Cylinders in Hydraulic Props of Powered Supports

International Scientific and Practical Conference on Urgent Problems of Modern Mechanical Engineering

机械制造;材料科学

Buyalich, G.D.^1,2,3 ; Buyalich, K.G.^1 ; Voevodin, V.V.^1

T.F. Gorbachev Kuzbass State Technical University, Vesennyaya Str. 28, Kemerovo

650000, Russia^1

Yugra Technological Institute Branch of Tomsk Polytechnic University, Leningradskaya Str. 26, Yurga

652055, Russia^2

Institute of Coal of SB RAS, Leningradskiy Ave. 10, Kemerovo

650060, Russia^3

关键词: Design and construction;    Equivalent stress;    Hydraulic cylinders;    Hydraulic props;    Power cylinders;    Powered support;    Sealing element;    Special finite elements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/127/1/012034/pdf
DOI  :  10.1088/1757-899X/127/1/012034

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

At present a lot of efforts are made to use double-layer power cylinders in hydraulic props of powered supports. To study the response of these cylinders to loads a special finite-element model has been developed and used for investigations into tension effect and double-layer cylinder thickness - radial strain relation under pressure of hydraulic liquid 50 MP. It has been revealed that double-layer cylinders are distinguished by much lower radial strains in the zone of cup-like sealing elements as if compared with one-layer cylinders, as well as equivalent stresses are lower, and safety factor is higher. The data of the study can be recommended to calculate appropriate geometrical parameters of hydraulic props with respect to lower radial strains of a hydraulic cylinder, which improve its leak-tightness and functioning of cup-like sealing elements. The obtained results can be useful for design and construction of powered supports.