双钢轮振动压路机功率的配置

Power balance of double-drum vibratory roller

以双钢轮振动压路机为例,结合试验结果探讨了振动压路机功率配置的问题。通过测试分析压路机一个工作循环各部分功率需求及变化规律,结合压路机工作特点,提出了压路机功率配置的方案。结果表明:压路机工作历程分为起步和恒速压实2个阶段,恒速压实阶段所需功率较小,只有发动机装机功率的一半,而起步和起振瞬间所需功率较大,峰值功率超出了装机功率;调整行走和起振液压系统中压力峰值出现的时间,可使2个峰值错开;也可调整起步和起振时的加速时间和加速度变化规律,削减压力冲击的峰值,来降低瞬间所需的最大功率。

The engine power matching of vibratory tandem rollers is discussed by analyzing the experiment results of tandem vibratory rollers.A type of power matching scheme is proposed by testing the power consumption and variation in one working cycle.The results show that one cycle can be divided into two stages,starting and steady velocity compaction.The power consumption amount is relatively low at the steady velocity compaction stage,which is only a half of the engine rating power.However,the power consumption is large at the starting stage with the instantaneous peak power exceeding the engine rating.The instantaneous large power needs can be lowered by two means,one is by adjusting the peak power time of driving system and vibration system to stagger each other,the other is by resetting the acceleration period and its variation to reduce the pressure impaction in the hydrostatic transmission system.5 tabs,3 figs,12 refs.