Power Distribution and Engineering Test of Engineering Drilling Rigs with Machine-Hydraulic Parallel Drive
In order to realize the reasonable distribution of power in the power system of engineering drilling rigs,the power distri-bution method of the machine-hydraulic parallel drive system was proposed.The characteristic curves of the output speed,torque and to-tal transmission ratio of the transmission part were derived by analyzing the working principle of the system.On this basis,the physical model of the system power bonding diagram was established by applying the theory of the bonding diagram,and the state equation of the system was deduced.Based on the power flow and energy transfer of the system,it was recognized that the power flow and energy transfer of the system were determined by the system distribution parameters and external loads.By constructing the mathematical model of each load of the system,the relationship curve of each load was numerically calculated.Combining with AMESim software,data analysis of the simulation model and drilling rig engineering test were carried out.It is concluded that the machine-hydraulic parallel drive system has a good output characteristic in the middle and high rotational speeds,at this time,the system′s power consumption is low,and the drill-ing rig has a high drilling efficiency.After analyzing,the machine-hydraulic parallel drive system and power distribution method applied to the drilling rig can meet the needs of engineering foundation excavation,and it provides theoretical support and technical reference for the power system design of engineering equipment.
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