Study On Matching Of Dual-drive Single Drum Roller Hydraulic System Parameters

Full hydraulic dual-drive single drum roller has strong compaction ability, large drivingforce and can be applied to a variety of complex conditions, occupies a large share in thecompaction machinery. At present, domestic single drum rollers still have many significantproblems, such as travel system appears serious hydraulic impact and dynamic power demandis too large when starting process; the process of start-up time is too long; the stopping ofvibrating system emerges suction phenomenon. In order to improve the domestic hydraulicdual-drive single drum compactor overall performance, study its system matching hasimportant theoretical and practical significance. This paper adopts a comprehensive researchmethod which is based on test analysis, guided by theoretical analysis, by means of simulationanalysis.The author based on a domestic double drive hydraulic single drum roller20tons as testobject to study the load characteristics of the driving system and the vibration system, foundthat in dynamic process the inertial load is larger, the power requirements is higher; instationary process, the load reduce to smooth, driving force, drive torque, power demandshave dropped significantly. Test results show that in the process of compaction, vibrationsystem start-up time is longer and hydraulic system overflow for a long time. Vibrationsystem unreasonable configuration influent the engine working point, cause two systemworking parameters could not meet the requirements.For matching of driving system, starting from the following aspects: gear set shouldconsider the specific operating mode, the drive force distribution of the front and rear wheelsshould put the coefficient of friction between tires/steel drum and the ground as the reference,parameter matching should be combined with the power, pressure, speed, both can meet thejob requirements and guarantee the machine operation efficiency. For matching of vibrationsystem should guarantee the good quality of compaction, reduce the maximum dynamicpower demand and the vibration parameters is stable, the system overall efficiency is high.Vibration system and drive system influence each other, the two systems work together inevitably leads to engine output torque increase and rotation speed down. Adequate powerengine configuration is the basic safeguard for system good job, only the system matchesrationally can maximize engine power.Adopt the Mechanical-hydraulic co-simulation method: mechanical system is establishedby Adams multi-body dynamics software, hydraulic system is established by AMESimhydraulic simulation software, using the software interface files for data exchange to realizeco-simulation. And compared the simulation results with the test results, verify the correctnessand feasibility of the model. Based on this model, the working pressure of the vibrationsystem is optimized.Joint research subject to vibration system and driving system, research the related data andconclusions, use the mechanical-hydraulic joint simulation method and train of thought forthe first time, provides reference for the design of the roller.