混凝土输送泵车耐磨环质量改进研究

发布时间：2019-04-21 07:37

【摘要】：21世纪以来,我国加大了隧道桥梁、水利工程和公路等基础设施建设的力度,投资金额更是逐年大幅度增加。加之,近年大量流动人口向城市聚集,高层建筑物得到了极大的发展,致使工程机械也进入了迅猛发展时期。混凝土输送泵车是应用非常广泛的工程机械之一,它能加速施工,使工人的劳动强度大大降低,还具备粉尘少、污染小、噪音低和占地小等优点。但是,泵车也有其弊端,平均每连续泵送7天就需要更换泵车的耐磨构件,费时费力。耐磨环作为泵车的重要耐磨构件之一,需要在眼镜板上不断地换向滑动以完成混凝土的连续输送,每分钟换向数百次,换向速率高达0.2 m/s,致使接触面经常出现严重磨损,造成密封不严。不只单单降低混凝土浇注质量,甚至会造成混凝土泵车的停用。因此,如何避免频繁更换耐磨环,提高耐磨环的质量是一个急需解决的问题。本文针对混凝土输送泵车的耐磨环生产工序开展研究工作,旨在提高耐磨环的耐磨性和使用寿命等。首先,阐述本研究的概况、重要性和必要性。对本研究中所采用的质量改进的相关理论知识进行介绍。其次,对耐磨环的生产工艺进行一系列的数据采集和整理工作,结合Minitab软件,找到影响耐磨环质量的关键工序。再针对影响耐磨环质量的关键工序,运用控制图和过程能力分析等方法进行深入分析,找出关键工序中影响耐磨环质量的主要因素。然后,针对影响耐磨环质量的主要因素的特点,运用正交实验设计和过程能力提升等方法,对耐磨环现存的质量问题进行改善,提出方案。最后,用Topsis评价法对改善方案进行评价,判定改善方案可行与否,确保提高耐磨环的质量。对本文的主要研究概况进行总结,从而为后续A公司耐磨环的生产提供科学、客观的方案。
[Abstract]:Since the 21st century, our country has increased the strength of tunnel bridge, water conservancy project and highway infrastructure construction, and the investment amount has increased greatly year by year. In addition, in recent years, a large number of floating population to the city, high-rise buildings have been greatly developed, resulting in the construction machinery has also entered a period of rapid development. The concrete conveying pump truck is one of the construction machinery which is widely used. It can accelerate the construction, greatly reduce the labor intensity of the workers, and has the advantages of less dust, less pollution, low noise and small occupation. However, the pump truck also has its drawbacks, the average pump every 7 days need to replace the wear-resistant components of the pump truck, time-consuming and laborious. As one of the important wear-resisting components of the pump truck, wear-resistant ring needs to slide continuously on the glasses plate to complete the continuous transportation of concrete, with a speed of up to 0.2 m / s per minute, hundreds of times a minute, and the wear-resistant ring is one of the important wear-resistant components of the pump truck. It often results in severe wear and tear on the contact surface, resulting in poor sealing. Not only will the quality of concrete pouring be reduced, but even the concrete pump truck will be stopped. Therefore, how to avoid frequent replacement of wear-resistant rings and improve the quality of wear-resistant rings is an urgent problem to be solved. In this paper, the production process of wear-resistant ring of concrete conveying pump car is studied in order to improve the wear-resistance and service life of wear-resistant ring. First of all, explain the general situation, importance and necessity of this study. The theoretical knowledge of quality improvement used in this study is introduced. Secondly, a series of data collection and arrangement work are carried out on the production process of wear-resistant ring, and the key process affecting the quality of wear-resisting ring is found by combining with Minitab software. In view of the key process affecting the quality of wear-resisting ring, the control chart and process capability analysis are used to carry on the in-depth analysis, and the main factors affecting the quality of wear-resisting ring in the key process are found out. Then, according to the characteristics of the main factors affecting the quality of the wear-resistant ring, the existing quality problems of the wear-resisting ring are improved by means of orthogonal experiment design and improvement of the process capability, and the scheme is put forward. Finally, the Topsis evaluation method is used to evaluate the improvement scheme, to determine whether the improvement scheme is feasible or not, and to ensure the improvement of the quality of the wear-resistant ring. The main research situation of this paper is summarized, so as to provide a scientific and objective scheme for the production of wear-resistant ring in follow-up A Company.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU646

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