Internal leakage characteristics of gripper cylinder of TBM

This paper is concerned with the internal leakage characteristics of the gripper cylinder in Tunnel Boring Machine (TBM) under impact load. The internal leakage model of the gripper cylinder included factors such as the clearance between the piston and the internal wall of the cylinder, as well as the moving amplitude and frequency of the gripper cylinder is established. Due to the leakage model, the influences of the aforementioned parameters on the leakage characteristics are analyzed. The analysis indicates that the moving amplitude and the frequency of the gripper cylinder both have remarkable influences on the internal leakage of the gripper cylinder, the internal leakage flow rate will be negative when the frequency is greater than 120 rad/s as the clearance is 0.01 mm. The peak value of the pressure in rod chamber increases while the amplitude is declining with the clearance.

[1]  Wei Sun,et al.  Study of TBM cutterhead fatigue damage mechanisms based on a segmented comprehensive failure criterion , 2015 .

[2]  Antti Ylinen,et al.  A hydraulic cylinder model for multibody simulations , 2014 .

[3]  Jerzy Rojek,et al.  Practical fatigue analysis of hydraulic cylinders and some design recommendations , 2006 .

[4]  Andreas Ritter,et al.  Hydraulic Control Systems , 2016 .

[5]  Chen Liu-hai.  A new method based on HHT for analyzing dynamic characteristics of a hydraulic cylinder , 2011 .

[6]  Bernhard Maidl,et al.  Gripper TBM and Shield Machine Combinations , 2008 .

[7]  M. Haloua,et al.  On the dynamic behavior of a hydraulic cylinder , 2000, Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187).

[8]  T. Bednarek,et al.  Practical fatigue analysis of hydraulic cylinders – Part II, damage mechanics approach , 2010 .

[9]  V. V. Burenin.  Calculation of leakage through hydraulic-cylinder piston packings , 1982 .

[10]  Wang Linhong,et al.  NONLINEAR DYNAMIC CHARACTERISTICS OF MOVING HYDRAULIC CYLINDER , 2007 .

[11]  Jihai Jiang,et al.  Experimental study of hydraulic cylinder leakage and fault feature extraction based on wavelet packet analysis , 2015 .

[12]  Gianni Nicoletto,et al.  Failure of a heavy-duty hydraulic cylinder and its fatigue re-design , 2011 .

[13]  M. Singaperumal,et al.  Piston eccentricity and friction force measurement in a hydraulic cylinder in dynamic conditions considering the form deviations on a piston , 2001 .

[14]  K. Fernow.  New York , 1896, American Potato Journal.

[15]  Ma Chang-xun,et al.  Internal leakage fault diagnosis of hydraulic cylinder using PCA and BP network , 2011 .