基于AMESim的林业采伐头俯仰液压缸的能量回收系统设计  

Design of Energy Recovery System for Forestry Logging Head Pitch Hydraulic Cylinder Based on AMESim

作　　者：李佳峰 郑一力[1] 刘晋浩[1] 马跃威 LI Jiafeng;ZHENG Yili;LIU Jinhao;MA Yuewei(School of Technology,Beijing Forestry University,Key Laboratory of Forestry Equipment and Automation,State Forestry and Grass-land Administration,Beijing 100083,China)

机构地区：[1]北京林业大学工学院,国家林业和草原局林业装备与自动化重点实验室(北京林业大学),北京100083

出　　处：《森林工程》2024年第6期108-116,共9页Forest Engineering

基　　金：国家自然科学基金(31670719)。

摘　　要：林业采伐头在液压缸下沉过程中,重力势能通过控制阀的节流作用转化为热能而耗散,并且系统非工作状态下液压泵的无负载空转也造成能源浪费,导致显著的能量损失。针对以上问题,提出基于AMESim(advanced modleing engineering simulation)的林业采伐头俯仰液压缸的能量回收系统,该系统通过高、低压蓄能器与负载敏感泵的配合对采伐头俯仰液压缸的重力势能及空载时动能进行回收再利用,以减少系统能耗。试验结果显示,在一个工作周期内,负载敏感泵与常规定量泵在相同工作周期内的能量输出比原系统减少了32.04%,在高、低压蓄能器的作用下,液压缸活塞杆的移动速度振荡得到了有效减缓,降低了采伐作业中的油缸冲击,且一个工作周期内实现了51.402 kJ的能量回收,显著优化了系统的节能性能。During the hydraulic cylinder lowering process of forestry logging heads,a large amount of gravitational potential en⁃ergy is converted into thermal energy through the throttling effect of the control valve,which is dissipated.In addition,the no-load idle operation of the hydraulic pump in the non working state of the system also causes energy waste,leading to significant energy loss.In response to the above issues,this article proposes an energy recovery system for the forestry logging head pitch hydraulic cylinder based on AMESim.The system recovers and reuses the gravitational potential energy and kinetic energy of the logging head pitch hy⁃draulic cylinder under no-load conditions through the combination of high and low pressure accumulators and load sensitive pumps,in order to reduce system energy consumption.The experimental results show that within one working cycle,the energy output of the load sensitive pump and the conventional quantitative pump in the same working cycle is reduced by 32.04%compared to the original sys⁃tem.Under the action of high and low pressure accumulators,the movement speed oscillation of the hydraulic cylinder piston rod is ef⁃fectively slowed down,reducing the impact of the oil cylinder during logging operations.In addition,an energy recovery of 51.402 kJ is achieved within one working cycle,significantly optimizing the energy-saving performance of the system.

关 键 词：林业采伐头 势能回收 液压蓄能器 AMESIM 液压油缸 负载敏感泵 

分 类 号：S776.312[农业科学—森林工程]