全液压塔机回转系统能量再生与应用研究

全液压塔机通常带载回转，转动惯性大。回转制动时，转台惯性动能会导致系统油路压力冲击，最终以热能形式散失造成能量浪费并使油温升高，致使系统性能下降。利用蓄能器和泵/马达二次元件给出一种塔机回转制动能量回收及再利用系统，回转制动的惯性能量回收后用于塔机散热系统的辅助动力，以避免回收能量对系统主回路运行产生影响。仿真结果表明，与原回转液压系统相比，该系统回转制动过程更加平稳，能够保证制动精度，回收的制动惯性能量用于塔机散热系统辅助可节能17.48%。

Energy Regeneration and Reuse of Rotary System for Hydraulic Tower Crane

 A hydraulic tower crane usually rotates with load and its rotational inertia is large. The inertia kinetic energy of platform leads to hydraulic pressure impact and dissipates in the form of thermal energy during rotary braking. It makes oil temperature rise and the system performance deteriorate. We put forward an energy recovery and reuse rotary system of tower crane with accumulator and pump/motor. The system can recycle rotary inertia energy and provide auxiliary power for cooling system in order to avoid the effects on the main circuit. Compared with the original system, the simulation results show that the new system can not only brake more smoothly but also ensure the braking accuracy; the recycled energy can be reused in cooling system and it can save 17.48% of energy.