大型旋转部件静平衡试验研究

对某大型磨盘体的现场静平衡试验过程进行分析研究,计算不平衡量,确定配重方案。实践表明,该试验方案保证了产品的工作要求,为同类大型回转体的静平衡试验及配重方法积累了宝贵经验。

恒压柔性沼气储气装置配重盘倾斜分析

恒压柔性沼气储气装置是一种新开发的干式储气方式,在沼气工程中有非常好的应用前景。实践发现,配重盘的倾斜度是该装置安全运行的重要指标之一。本文通过对该装置配重盘倾斜原因的探讨,分析得出安装误差等因素要求立柱和导向机构轴承之间必须设计一定自由度。自由度由轴承安装间隙和调节弹簧构成,过大的自由度是造成配重盘倾斜超标的根本原因。通过配重盘倾斜位移角与倾斜高差角的空间分析,并结合实验数据进行讨论,说明装置中导向机构的合理自由度能够控制配重盘倾斜在安全范围之内。同时也得出立柱与导向机构各自的受力最不利情况,为装置的进一步设计打下基础。

Design and simulation of an electromagnetic balance head for electric spindle

The electromagnetic balance head is used for balancing the electric spindle. This paper analyzes the internal structure of the electromagnetic balance head and introduces the structure of the counterweight plate and the range of the balance in the moving ring.The principle of how the electromagnetic field generated by the static coil acts on the moving ring is also investigated. The model is built in Ansoft Maxwell and the excitation parameters and boundary conditions are set up. Through the analysis of the magnetic field generated by the static coil in the position of the moving ring, it is verified that the static loop coil can drive the counterweight plate.

平衡重—顶柱式预应力台座钢筋砼结构的设计计算

概要地介绍平衡重—顶柱式先张法钢筋混凝土预应力台座的受力变形特点和台座设计计算的内容、步骤和方法。此种结构型式对地基承载力的要求不高,而台座的设计总张拉力又不受限制,有较好的通用性。