Application of hydraulic active test in hydraulic fault diagnosis of forging machine

被引：0

作者：

Yang C. ^{[1
,2
]}

Zhao J. ^{[1
]}

Yao C. ^{[3
]}

Zhang R. ^{[1
]}

Sun H. ^{[1
]}

机构：

[1] Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao

[2] Tangshan polytechnic College, Tangshan

[3] Key Laboratory of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 02期

关键词：

Fault diaghosis; Forging machine; Hydraulic active test; Hydraulic failure; Hydraulic system; Internal leakage; Leakage detection; Online detection;

D O I：

10.11990/jheu.201708025

中图分类号：

学科分类号：

摘要：

With the rapid development of hydraulic technology, the hydraulic system of a large forging machine is becoming increasingly complex. A fast and accurate approach for online detection is urgently needed to address large economic losses caused by continuous internal leakage of the hydraulic system. This study proposes a method of fault diagnosis for the forging machine based on hydraulic active test technology. A leakage model and an online detection model of an open hydraulic system are built. The total leakage of this hydraulic system is theoretically analyzed to derive the total sum of leakage of all control components of the main oil route and the leakage of a branch component. Furthermore, the detection method for the leakage of the main oil route control component and that of the branch component is theoretically analyzed. By conducting applied research on the deficiency in pressure of the hydraulic system of a 1 250 t forging machine, the researchers verified the effectiveness of the proposed method in detecting the internal leakage failure of the complex hydraulic system. © 2019, Editorial Department of Journal of HEU. All right reserved.

引用

页码：380 / 386

页数：6

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