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为减少拍振对驾驶员身心健康的影响,针对现有文献方法研究的不足,提出综合考虑作业过程中前后轮压实物料特性不同的振动压路机5自由度拍振模型,在经现场施工试验数据验证提出模型合理性的基础上,引入相对极差评价方法,系统分析代表不同工况模型参数下的拍振响应特性。结果表明,同一台双钢轮振动压路机在相同激振频率下的拍振周期基本保持不变,通过改变设计前后轮偏心块的相对质量、调整驾驶室的中心距和采用合理的行驶速度,都可以明显弱化驾驶室拍振的相对极差,而改变偏心块的安装相位差角对系统的拍振响应影响不大。
In order to reduce the impact of beat vibration on the driver’s physical and mental health, aiming at the deficiency of existing literature methods, a 5-degree vibration model of vibratory roller with different characteristics of front and rear wheel compaction material in operation is proposed. On the basis of verifying the rationality of the proposed model, the method of relative difference evaluation is introduced to systematically analyze the beat response characteristics of the model under different operating conditions. The results show that the same double drum vibratory roller at the same excitation frequency of the beat period remains unchanged by changing the relative quality of the front and rear eccentric wheel design, adjust the center of the cab and the use of a reasonable speed, both Which can obviously weaken the relative range of the beat-vibration of the cab, while changing the installation phase difference angle of the eccentric block has little effect on the beat response of the system.