液压双轮铣槽机铣削岩土受力的试验探究  

Cutting load tests of a hydraulic double-wheel trench cutter

作　　者：李万莉[1] 刘祥勇[1] 姜燕[1] 刘佳宝[1] 

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《振动与冲击》2016年第19期119-124,161,共7页Journal of Vibration and Shock

基　　金：国家"十二五"科技支撑计划(2011BAJ02B06)

摘　　要：液压双轮铣槽机是当今最先进的地下岩土开挖设备,但在开挖过程中会遇到底层土质的多样性问题,负载的波动对铣槽机的研发、控制使用带来困难。本研究基于国内第一台自主研发的液压双轮铣槽机,通过设计试验过程,提取和分析试验数据,并与理论分析结果对比后发现:铣轮铣削岩土的负载受力呈现周期性变化规律,周期是铣轮旋转一周的时间,但受客观因素的随机性影响,铣轮的切削受力的周期性也具有随机性;铣轮受力受岩土强度、铣轮转速、铣轮正反转的影响,岩土强度越高,切削力越大,切削力的波动性越大;铣轮转速越高,切削力越大,切削力的波动性越大;相同条件下铣轮正向运转时的负载受力要大于反向运转时的负载受力;通过切削受力曲线,可以得出切削力的变化周期、平均切削力的大小、切削力的波动程度,这为液压双轮铣槽机的电液控制系统的设计提供了依据。Hydraulic double-wheel trench cutter is the best underground excavation equipment today, but it faces the diversity problem of underlying soil in the excavation process, its load fluctuations bring difficulties of its design and control. This study was based on the first domestic by draulic double-wheel trench cutter. Through designing test processes, extracting and analyzing test data, and comparing them with the theoretical analysis results, it was shown that the force of milling rock-soil has a periodic variation, and the period is the time for the milling wheel rotating a circle, but it is affected by objective factors7 randomness, the milling wheel cutting forced periodicity also possesses randomness; the milling wheel cutting force is affected by strength of rock and soil, milling wheel rotating speed, and milling wheePs positive-negative rotation; the higher the strength of rock and soil, the bigger the cutting force, the greater the cutting forced volatility; the higher the milling wheel rotating speed , the bigger the cutting force, the greater the volatility of cutting force; under the same conditions, the milling wheeFs force when positive rotation is larger than that; when negative rotation ; with a cutting force curve, the change period of the cutting force, the magnitude of the average cutting force, and the cutting force fluctuation level can be calculated, and these provide a basis for designing the electro-hydraulic control system of a hydraulic double-wheel trench cutter.

关 键 词：液压双轮铣槽机 铣削受力 试验取证 理论对比 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3