According to the characteristics of the complex boring strata and the large impact of load, and based on pressure feedback and electro-hydraulic proportional control, a new type of open circuit drive hydraulic system of cutter head was proposed in this paper. The pump-motor-accumulator system's dynamic mathematical model was established by linear treatment for the component model. The accumulator's impact on the system's natural frequency was analyzed. At the same time ,the simulation model was built by utilizing hydraulic modular components and hydraulic component design(HCD) in the AMESim. In order to control the working status of the accumulator by the proportional direction valve, the simulation study on the better impact absorption effect was carried out under different working conditions. The results show that the accumulator has also affected the stability of the system when absorbing the pressure impact by the different load drastic changes. It can be improved by the electrohydraulic proportional control of the accumulator's working status to adapt to the load impact．
TENG Tao, XIA Yi-min, YANG Wu-zi, TAN Qing. Characteristics analysis of pressure impact absorption for shield cutter head drive hydraulic system. J4, 2011, 45(5): 864-868.
［1］ HERRENKNECHT M.Hard Rock TBMs technology ［C］ ∥Soft Ground and Hard Rock Mechanical Tunneling Technology Seminar. Colorado , USA : CSM campus, 2003: 103-108． ［2］ 胡国良, 龚国芳, 杨华勇. 盾构掘进机土压平衡的实现［J］. 浙江大学学报:工学版, 2006, 40 (5): 874-877． HU Guoliang, GONG Guofang, YANG Huayong. Realization of earth pressure balance for shield tunneling machine ［J］. Journal of Zhejiang University: Engineering Science, 2006, 40 (5): 874-877． ［3］ 王涛, 徐日庆, 齐静静，等. 盾构掘进引起的土体附加应力场分析［J］. 浙江大学学报:工学版, 2008, 11(42): 2009-2014． WANG Tao, XU Riqing, QI Jingjing, et al. Additional stress field of surrounding soil due to shield tunneling ［J］. Journal of Zhejiang University: Engineering Science, 2008, 11(42): 2009-2014． ［4］ 邢彤, 龚国芳, 胡国良, 等. 基于系统重组的盾构刀盘驱动液压系统设计与试验［J］. 农业机械学报, 2006, 5(37): 125-157． XING Tong,GONG Guofang, HU Guoliang, et al. Design and test of the cutterdevices hydraulic system of the shield tunneling machine based on system recomposed technology ［J］. Transactions of the Chinese Society for Agricultural Machinery, 2006, 5(37): 125-157． ［5］ HU Guoliang, GONG Guofang, YANG Huayong, et al. Electrohydraulic control system of shied tunnel boring machine for simulator stand ［C］ ∥The 6th International Conference on Fluid Power Transmission and Control. Hangzhou: ICFP, 2005: 94-99． ［6］ 张庆永, 常思勤. 液驱混合动力车辆的制动能量回收研究［J］. 中国工程机械学报, 2008, 6 (3) : 293-298． ZHANG Qingyong, CHANG Siqin. Braking energy recycling for hydraulicallydriven hybrid powered vehicles ［J］. Chinese Journal of Construction Machinery, 2008, 6(3): 293-298． ［7］ YOKOTA S, SOMADA H, YAMAGUCHI H. Study on an active accumulator ［J］. JSME International journal, Series B, 1996, 39(1): 119-124． ［8］ 权凌霄, 孔祥东, 高英杰, 等. 不考虑进口特性的蓄能器吸收冲击理论及试验［J］. 机械工程学报, 2007,43(9): 28-32． QUAN Lingxiao, KONG Xiangdong, GAO Yingjie, et al. Experiment of accumulator absorbing pressure pulsation without regard to its entrance characteristics ［J］. Chinese Journal of Mechanical Engineering, 2007, 43(9): 28- 32． ［9］ 徐兵, 欧阳小平, 杨华勇. 配置蓄能器的变频液压电梯节能控制系统［J］. 浙江大学学报:工学版, 2002, 36(5): 521-525． XU Bing, OU YANG Xiaoping, YANG Hua– yong . Energysaving system applying pressure accumulators for VVVF controlled hydraulic elevators ［J］. Journal of Zhejiang University: Engineering Science, 2002, 36(5): 521-525． ［10］ 王伟, 傅新, 谢海波, 等. 基于AMESim的液压并联机构建模及耦合特性仿真［J］. 浙江大学学报:工学版, 2007, 41(11): 1875-1880． WANG Wei, FU Xin, XIE Haibo, et al. Modeling of AMESim based hydraulic parallel mechanism and simulation of its coupling characteristics ［J］. Journal of Zhejiang University: Engineering Science, 2007, 41(11): 1875-1880．
