推土机铲刀不提升故障及日常维护关键问题研究

随着社会经济的迅速发展,科技技术也在不断的进步,工程建设的施工技术也得到一定程度的提升与发展。但是,现阶段,在工程施工建设过程中,推土机铲刀不提升的问题严重影响着建设施工的进度。因此,建设施工人员必须对推土机铲刀不提升的问题进行详细的了解,并采取科学合理的措施对推土机铲刀不提升的故障应急日常维护问题进行解决。在文章中作者根据自身的实践经验以及对推土机工作的调查研究对推土机不提升故障以及日常维护的关键问题进行进一步的研究与探讨。

F108-V型遥控透视X线机故障分析两例

介绍北京万东公司的F108-V型遥控透视X线机在使用中经常出现的一些问题,包括踩脚闸透视时无图像以及管球不能向下运动的故障分析及检修。

Study on the instability of airflow in mine hoisting-shaf

In order to discover the airflow pattern in mine shaft which outfitted with hoist equipment （HE）, this paper set up the physical model and anatomized the piston-wind caused by hoist equipment, and researched the flow field and velocity field around the hoist equipment during its moving process, and analyzed the airflow around single and couple hoist equipment as well as decisive range of piston effect and additional effect of hoist equipment to ventilation system. Research conclusion indicate that during hoist equipment movement, airflow pattern changes repeatedly because of the influence of pis-ton effect from hoist equipment, and the study of airflow stability in shaft is the foundation for the stability of ventilation in mine.

基于智力城镇化的特色小镇产业培育探索——以辽宁通远堡镇为例

我国城镇化正处于劣势的体力城镇化阶段,特色小镇作为新型城镇化的主力军,体力化威胁仍不可避免。为缓解特色小镇体力化困境,文章基于智力城镇化的相关理论,以辽宁通远堡镇为例,围绕特色产业展开智力化培育的探索。结合链式产业思维,以智力投入、智力主体、智力产出三大环节为基础,以智力要素创新性地打造智力链条,构建可持续的特色产业,带动城镇化转型升级,以期为辽宁省乃至全国特色小镇培育提供借鉴。