共查询到14条相似文献,搜索用时 78 毫秒
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浅谈轮式起重机力矩限制器 总被引:1,自引:0,他引:1
力矩限制器是防止超载的安全装置,该装置通过超载报警信号自动停止操作动作,保证起重机械更安全、可靠的工作,避免因超载造成的事故。本文介绍了力矩器的系统构造和工作原理,有多个传感器实时采集起重机的动态参数,经CPU实时计算出实际载荷,与机械当前状态额定负荷做比较,从而判断机械的工作状态是否安全。 相似文献
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用卷筒轴向蜗轮式限制器代替电动双梁桥式起重机中原有的重锤式限制器,可避免因连杆断裂造成的限位失灵,保证起重机安全运行。与改进前相比,每年可避免轧机机列停机损失50 多万元。 相似文献
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塔式起重机由于吊臂的作用能将物料提升后方便地水平运送到吊臂的作业半径内的各个施工作业点上,比井字架和施工电梯更具机动性,在高层建筑工程施工中得到了普遍的应用.但在实际使用过程中,由于有些企业对塔式起重机的安全管理存在不足,使塔式起重机在使用中存在许多事故隐患, 相似文献
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无级变速器链轮型面复杂,要在回转母线为圆弧的锥台表面铣出60条辐射状的弧底径向齿槽,通常需要专用机床。本文介绍了改装立式铣床加工链轮的成功经验,简便可靠。 相似文献
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Hazem M. Elzarka 《Canadian Metallurgical Quarterly》2009,25(3):155-164
Owners are increasingly recognizing building commissioning as an effective means of ensuring quality and maximizing energy performance. The demand for commissioning new construction projects has increased substantially over a short period of time with the growing demand for leadership in energy and environmental design certified buildings. However, the pool of experienced commissioning providers hasn’t increased at the same rate. Many owners are procuring commissioning services for the first time and don’t know how to best procure these services. The objective of the research described in this paper was to identify best practices for procuring commissioning services for new construction projects and to compare them with current practices. Issues that were evaluated include the timing of the commissioning provider involvement, the independence of the commissioning provider, certification of the commissioning provider, selection criteria, and the importance of a clear definition of the scope of work. Research results indicate that there is variation between current practices and recommended best practices. It is important for building owners and industry professionals to understand and implement the best practices recommended in this paper to maximize the benefits of the commissioning process. 相似文献
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对薄带钢圆盘剪在调试过程中的侧隙窜动问题、圆盘剪投入后的跑偏问题以及张紧辊对剪切的影响进行了分析,现场实际问题的解决办法经过实践检验都起到了较好的效果。 相似文献
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改建的肯布拉港铜冶炼厂2000年投入运行。试车时遇到很多问题,例如诺兰达炉风口区多次烧穿、吸收塔耐火材料崩落以及诺兰达炉和三菱吹炼炉工艺控制出现问题。本文介绍出现的这些问题及其解决措施,重点介绍三菱吹炼炉和酸厂的工艺发展。 相似文献
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