Mechanical characteristics of rotary drilling rig with large triangular variable-range assembly

作者：Xu, Xin-Xin^*; Jiao, Sheng-Jie; Cheng, Jian-Lian; Gu, Hai-Rong

来源：Journal of Chang＇an University(Natural Science Edition), 2013, 33(6): 120-126.

• Constraint reactions
• Design and optimization
• Hydraulic cylinders
• Mechanical behavior
• Mechanical characteristics
• Mechanics analysis
• Rotary drilling rigs
• Simulation

To study the mechanical behaviors of rotary drilling rig with large triangular variable-range assembly, the mathematic models were established under the hoisting and drilling conditions based on the mechanics analysis. A simulation model by MATLAB was built up in Simulink. With various angles of the rocker, the mechanics analysis of the parts of the rotary drilling rig was conducted. The results indicate that under hoisting and drilling condition, the loads of mast hydraulic cylinder and the arm hydraulic cylinder have nothing to do with the constraint reaction forces of the hinge connecting except the external loads while the load of the arm hydraulic cylinder is influenced by the load of mast hydraulic cylinder. Under hoisting condition, the load of the arm hydraulic cylinder is larger than the that of mast hydraulic cylinder, and the maximum constraint reaction force is observed at the hinge connecting of rocker and swing platform. While under drilling condition, the load of mast hydraulic cylinder is larger than that of the arm hydraulic cylinder, and the maximum constraint reaction force appears at the hinge connecting of support arm and swing platform. The arm hydraulic cylinder has been tested under hoisting condition, and the simulation data are basically consistent with the experimental ones, which verifies the reasonability of the mathematic model. The study can provide reference for design and optimization of rotary drilling rig with large triangular variable-range assembly.

• 出版日期2013-11