Based On Secondary Regulation Saving Hydraulic Excavator Swing System

Hydraulic excavator is the main representative of excavation equipment,which plays an important role in all kinds of engineering construction. With thewide use of excavator, the optimization of excavator’s performance has becomea base of the further development of hydraulic excavator manufacturers both athome and abroad. High efficiency and energy saving are two emphasis ofexcavator performance optimization. The efficiency of current excavator’shydraulic system is low. Main control valves consume a lot of energy, which isthe starting point of this subject. The excavator hydraulic system was redesignedin this article from the view of the optimization and improving the system’sperformance. The aim is to achieve a greater degree of energy saving.In the process of excavators’ working, rotary motion is frequent. The energyof rotating inertia can be converted into heat each time when the platformbraking, which is the actuality of current excavator slewing hydraulic system.For this reason, the loss of rotational kinetic energy of excavator’s slewingplatform not only causes the waste of energy, but also speeds up the temperaturerise of hydraulic system. This phenomenon is harmful for any hydraulic system.Secondary regulation technology is a kind of system which can make rotationalkinetic energy and gravity potential energy recycle reuse. It is a kind of energysaving technology. Based on the analysis of the features of secondary regulationtechnology and the excavator’s working condition, secondary regulationtechnology has been used for excavator’ s slewing hydraulic system in thissubject. As a result, a kind of hydraulic excavator slewing hydraulic systemwhich based on secondary regulation technology has been put forward. This newslewing hydraulic system has been designed aiming at recycling the rotationalkinetic energy when the slewing platform braking and reusing the recycledenergy among the next starting.The research contents are elaborated in the sequence of chapter asfollowing:Firstly, this paper discusses the significance of energy saving of excavator. Based on the analysis of excavator’s working condition and the basic principleand advantages of secondary regulation technology, secondary regulationtechnology has been applied to the excavator’s slewing hydraulic system as anenergy saving solutions. A brief introduction of the research content has beenmade;Secondly, the principle and insufficiency of traditional excavator slewinghydraulic system and the excavator slewing hydraulic system with anaccumulator to recycle energy has been analyzed. Considering excavators’slewing motions and other hydraulic components’ function, the hydraulicexcavator slewing hydraulic system which based on secondary regulationtechnology has been designed;Thirdly, respectively to the traditional excavator slewing hydraulic system,the excavator slewing hydraulic system with accumulator and the excavatorslewing hydraulic system based on the secondary regulation technology, theircorresponding AMESim model has been established. The parameters are set onthe foundation of actual XE215D.The simulation results can be the evidence ofexcavator slewing hydraulic system based on the secondary regulationtechnology having remarkably energy-saving advantages;At last, the influences on energy-saving performance of hydraulic systemof each parameter have been found out by controlling other variable parametersto ensure the single parameter is the only one effective factor.