论文部分内容阅读
液压挖掘机回转平台的运动占工作循环时间50～70％,能量消耗的25～40％,回转液压系统的发热量占总发热量30～40％。正确的计算选择回转机构的各项参数,对于提高功能利用,减少能量损失及系统发热,提高挖掘机的生产率,都具有十分重要的意义。为了决定回转机构液压传动的参数,首先应该决定在一定功率情况下回转平台的最大转速,最短的循环时间,最少的能量损失及回转速度与传动功率之间最优关系。本文根据液压传动的特点,对液压挖掘机回转机构主要参数的计算公式作一分析推导。液压挖掘机回转时平台的运动由起动加
The movement of the hydraulic excavator slewing platform accounts for 50 to 70% of the work cycle time, 25 to 40% of the energy consumption, and the total heat generation of the rotary hydraulic system accounts for 30 to 40%. Correct calculation and selection of various parameters of the slewing mechanism are of great importance for improving the function utilization, reducing energy loss and system heating, and improving the productivity of excavators. In order to determine the hydraulic transmission parameters of the slewing gear, the maximum rotational speed of the slewing platform, the shortest cycle time, the minimum energy loss, and the optimal relationship between the slewing speed and the transmission power should be determined at first. According to the characteristics of hydraulic transmission, this paper makes an analysis and derivation of the calculation formula of the main parameters of the hydraulic excavator swing mechanism. The movement of the platform during the rotation of the hydraulic excavator is started by adding