Modeling and Analysis on Servo Adjustment of Bidirectional Variable Displacement Pump in Hydraulic Drive System of the Cutter Head in a Shield Tunneling Machine

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Abstract:

Based on introduction of the basic configuration, working features of hydraulic drive system of the cutter head in a shield machine, the internal structure of the bidirectional variable displacement pump, BVDP, as the kernel element in the above hydraulic system, is depicted and compared with the ordinary variable plunger pump. Then the working principle and process of hydraulic pilot operated servo displacement adjustment about the BVDP are discussed in detail, and then the mathematical models and its transfer functions of the positive and negative displacement adjustments are established respectively. Also, the relationships between the primary performance indices such as stability condition, positioning stiffness, steady-state error, as well as initial control pressure and system parameters are analysis and concluded.

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1380-1386

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December 2010

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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[1] Xing Tong. Research on Hydraulic Drive and Control System of the Cutter Head in Shield Tunneling Machine [D]. Hangzhou: Zhejiang University, (2008).

Google Scholar

[2] Han Yali. Constitute of the hydraulic system of cutter head in EPB shield machine[J]. Construction Machinery and Maintenance, 2003(4): 92-94.

Google Scholar

[3] Cai Heshan. Earth-pressure-balance shield hydraulic drive and control system analysis: cut-disk drive hydraulic system [J]. Hydraulics and Pneumatics, 2003(8): 30-31.

Google Scholar

[4] Xing Tong, Yang Hua-yong, Gong Guo-fang. Efficiency comparative study for hydraulic drive system of cutter head in shield tunneling machine[J]. Journal Of Zhejiang University (Engineering Science), 2010, 44(2) : 358-363.

Google Scholar

[5] Shang Tonglin. Improving Performance of Energy Efficient Hydraulic Circuit [D]. University of Saskatchewan, Canada, (2004).

Google Scholar

[6] Lu Yongxiang. HU Dahong . Electrohydraulic proportional control technique [M]. Beijing: Mechanical Industry Press, (1988).

Google Scholar