钻井液振动筛传动方式初探

钻井液振动筛大都为惯性振动筛，按筛箱振动型式分有圆型振动筛、直线型振动筛和椭圆型振动筛。由于激振器与筛箱一起参振，激振器与动力机之间必须采用常规的万向节或柔性带实现动力传递。为克服常规的万向节、柔性带传动的传动链长、结构复杂和易损坏等缺点，提出采用胶带直接驱动代替常规的万向节或柔性带传动，并在激振器胶带轮和传动方式上作一定改变，便可满足使用要求。这种传动方式具有传递可靠和结构简单等优点，已成功地应用于2ZZS－T直线型振动筛上，使用效果良好。

连续箱体梁斜交路桥的振动规律实验分析研究

以某3跨连续箱体梁斜交路桥为案例背景,选用实体单元模型及梁单元模型开展构造动力分析,探讨了构造振动型式及自振动频率随斜率的变化规律,并经过路桥载荷实验开展比较分析,结果显示实体单元模型的计算成果相对更加可靠。依据实体模型振动型式,建议在宽斜箱体梁桥的模态实验中,选用在箱体梁两侧均配置感受器的实验方法,以求得到更为准确的构造振动实验数据。

Research on Vibration Characteristics of Large Scale Belt Conveyor and Its Application

High speed and large capacity belt conveyor is the main development trend. In the design, calculated and used of belt conveyor must be considered the high speed, large capacity, dynamic load. This paper starts from the analysis of conveyor belt transverse vibration. Through calculate transverse vibration natural frequency of conveyor belt, and analyze the lateral stability of belt conveyor.