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Pipe Shed Support trolley rig power head and its hydraulic drive system dynamics research

Author: DengNianSheng
Tutor: YangWuZi
School: Central South University
Course: Mechanical Design and Theory
Keywords: Pipe Shed Support trolley Rig power head Dynamics Hydraulic drive system Power Bond Graph Simulation
CLC: U455.3
Type: Master's thesis
Year: 2005
Downloads: 215
Quote: 4
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Abstract


Current weak fractured adverse geological conditions in the tunnel excavation , pipe roof support law enforcement is a very common kind of advance support methods . However, currently not yet the manufacturers dedicated pipe-shed support equipment , the vast majority of pipe roof support, on-site construction alternative equipment , construction of low efficiency , poor security , while the imports from abroad dedicated pipe -shed support the price of the equipment is very expensive . It is in this context that the research carried out on the pipe -shed support trolley . Pipe-shed support drilling in the pipe-shed support the mechanical properties of the rock drilling based on the PDC drill and rotary impact drilling a comparative analysis . Based on the analysis of PDC drill bits and cutting tools , rotary percussion drilling rock crushing mechanism , the pipe-shed support trolley rig power head design . On the basis of self-excited vibration analysis of dry friction between the pipe-shed support drilling bit rock and established the mathematical model of the vibration of the bottom hole assembly ( drill string ) , and its dynamic characteristics were analyzed . Drillstring torsional vibration transmitted to the rig power head the nonlinear vibration caused by the power head gear transmission . Under in nonlinear external excitation conditions , establishment of rig power head gear is driveline torsional vibration of nonlinear dynamic mathematical model and simulation of its dynamic characteristics . The more nonlinear factors in the hydraulic system , the use of power bond graph , the establishment of a dynamic nonlinear mathematical model of the hydraulic drive system for rig power head , and rig power head hydraulic drive system dynamic characteristics simulation research and experimental research . Through experimental tests show that , in good agreement with experimental results and simulation results , achieve the desired objectives . The above comprehensive study , the formation of a more complete rig power head the dynamic characteristics of the research system . Therefore , the article has some theoretical significance and practical value .

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CLC: > Transportation > Road transport > Tunnel project > Tunnel construction > Construction machinery
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