Mechanism of electro-hydraulic exciter for new tamping device

A new tamping device which is driven by an electrohydraulic exciter was proposed to overcome the limitations of mechanically driven devices. The double-rod oscillation cylinder drives the tamping arm to realize vibration. A new spin valve was designed in order to fulfill dynamic state requirements o...

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Bibliographic Details
Published inJournal of Central South University Vol. 21; no. 2; pp. 511 - 520
Main Authors Liu, Yi, Gong, Guo-fang, Yang, Hua-yong, Han, Dong, Yang, Xue-lan
Format Journal Article
LanguageEnglish
Published Heidelberg Central South University 01.02.2014
Subjects
Engineering
Metallic Materials
parametric analysis
variable damping
spin valve
oscillation cylinder
electro-hydraulic exciter
tamping device
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ISSN2095-2899
2227-5223
DOI10.1007/s11771-014-1969-5

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Summary:A new tamping device which is driven by an electrohydraulic exciter was proposed to overcome the limitations of mechanically driven devices. The double-rod oscillation cylinder drives the tamping arm to realize vibration. A new spin valve was designed in order to fulfill dynamic state requirements of the oscillation cylinder. Parametric analysis was carried out by establishing mathematic model. Then, the relationships among the structure of valve port and the frequency, amplitude, output shock force of the cylinder were researched. An experimental device of the electrohydraulic exciter was established to validate the theoretical results. The signals were acquired by AVANT dynamic signal analyser of vibration. The results show that new tamping device can satisfy all kinds of complex working conditions with the flexible adjustment of frequency and amplitude.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-014-1969-5