《机电工程》杂志社科技期刊核心期刊论文投稿机电一体化机械、仪表电工自动化、计算机浙江大学主办

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Structural strength analysis of annular valve group of hydraulic pile hammer

Published:2023-04-20 author:CUI Lang-lang, XU Meng-kai, HUANG Zeng, et al. Browse: 501 Check PDF documents

Structural strength analysis of annular valve group

of hydraulic pile hammer

CUI Lang-lang1, XU Meng-kai2, HUANG Zeng3, WANG Chun-yu2, ZHOU Hai-yong3,

CAO Li-gang1, ZHANG Xiao-song3

(1.Citic Heavy Industries Co., Ltd., Luoyang 471003, China; 2.School of Mechanical Engineering, Yanshan

University, Qinhuangdao 066004, China; 3.Shanghai Haiyue hydraulic mechanical and Electrical Engineering

Co., Ltd., Shanghai 200031, China)

Abstract: Aiming at the problem that the annular valve group, the core part of the hydraulic pile hammer, was easy to be destroyed due to its complex force, the finite element analysis and modal analysis of the annular valve group made of nodular cast-iron and 35CrMoV were carried out. Firstly, the working principle of the three-dimensional solid model of the annular valve set was analyzed. Then, the simulation boundary was set based on the structure of the hydraulic pile hammer, and ANSYS Workbench was used as a simulation platform for three different working conditions of statics analysis and modal analysis of different materials. Finally, by comparing the stress deformation and resonance frequency characteristics of two kinds of materials for annular valve groups, the influence of different materials and working conditions on the reliability of the annular valve group were analyzed. The research results show that the structural strength of the annular valve group can meet the requirements of use. Comparing with nodular cast-iron, the deformation of 35CrMoV annular valve group can be reduced by 0.04mm at most and the reliability is higher. The weak position of the annular valve group structure and the dangerous frequency range of 1000Hz~1700Hz are obtained by simulation, which can lay a foundation for the subsequent optimization research.

Key words: hydraulic valve block material; valve block performance; hydraulic valve group; static analysis; modal analysis; annular valve group reliability

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