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。
Abstract
Hydraulic double-wheel trench cutter is the best underground excavation equipment today, and it will meet the diversity of the underlying soil in the process of the excavation, whose load fluctuations can bring difficulties in the process of machine designation and control. This study is based on the first domestic double-wheel trench cutter, and by designing the experiments process, extracting and analyzing the test data, comparing with the theory, draw the conclusion: The force of milling rock-soil appear periodic variation, and the periodic cycle is the time that milling wheel use in rotating a week, but affected by objective factor's randomness, the milling wheel's cutting force is random in a period; The milling wheel's force is determined by the strength of rock and soil, the milling wheel speed, the milling wheel's forward and reversing orientation, the higher the strength of rock and soil, the bigger the cutting force, the greater the cutting force's volatility; The higher the milling wheel speed , the bigger the cutting force, the greater the volatility of cutting force; Under the same conditions, the milling wheel's force is greater in forward than in the reverse operation; By cutting force curve, the change cycle time of cutting force、 the size of the average cutting force、 the cutting force fluctuation degree can be calculated, and these provide an accordance for electro-hydraulic control system.
关键词
液压双轮铣槽机 /
铣削受力 /
试验取证 /
理论对比
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Key words
hydraulic double-wheel trench cutter /
milling force /
experimental evidence /
comparison with theory
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