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本文以两年多来进行的大量的实验室模拟实验为基础,通过综合分析和理论探讨,较全面地论述了高物料层运输的现象与机理,指出国外以滑移楔为前提的理论与方法的不合理性。从实际存在的整体位移现象出发,提出了将散体视为整体进行分析的新观点,建立了力学模型,并由此推导出了:①确定极限运输物料高度的公式,利用公式计算所得的结果与实验值的相对误差大都在10%以内,仅大块度时误差在10%～15%之间,这是允许的。表明公式是可用的。②发现并找到了一条刮板间距t 与极限高度H_j 的曲线,利用此曲线可选择合适的间距,也可确定保证发生整体位移现象的t、Hj 值。它成了确定间距的新的有效方法。③发现运输速度对极限高度、运输阻力影响甚少。当运输速度由0.020～0.242(m/s)时,前者在1%左右波动,后者在5%～10%范围内变化。④涉及了阻力系数的某些影响因素。这样本文就为高物料层运输的设计第一次提供了较系统的方法和依据。除了对运输机理和参数设计作了较深入的探讨,并取得可供实用的初步成果外,本文还整理了梭车模型正交试验的结果,提出了最优参数。按最优参数设计梭车,将在运输能力相同的条件下,功率减少一半,金属消耗也将有明显减少。作者们希望这一实验室研究成果能尽快地用于生产实际。我们愿为此提供技术协作。
Based on a large number of laboratory simulation experiments conducted in more than two years, this paper comprehensively expounds the phenomenon and mechanism of high material layer transportation through comprehensive analysis and theoretical discussion. It points out the theory and method of foreign sliding wedge Irrational. Based on the actual phenomenon of global displacement, this paper puts forward a new viewpoint of analyzing the bulk as a whole, sets up the mechanical model and derives the following conclusions: ① The formula for determining the height of the ultimate transport material, the formula The relative error with the experimental value is mostly within 10%, only the error when the large block between 10% and 15%, which is allowed. Show that the formula is available. ② Found and found a scraper spacing t and height limit H_j curve, the use of this curve can choose the appropriate spacing, but also to determine the overall displacement to ensure the occurrence of t, Hj value. It has become a new effective method of determining spacing. ③ found that the transport speed of the maximum height, transport resistance has little effect. When the transportation speed is from 0.020 to 0.242 (m / s), the former fluctuates around 1% while the latter varies from 5% to 10%. ④ related to the drag coefficient of some of the factors. This article for the first time for the design of high material transport layer provides a more systematic method and basis. In addition to a more in-depth discussion on the transport mechanism and parameter design, and the availability of preliminary results for practical purposes, the article also sorted out the results of the orthogonal test of the shuttle car model and proposed the optimal parameters. According to the optimal parameters of shuttle design, will be in the same transport capacity, reduce power by half, the metal consumption will also be significantly reduced. The authors hope that the results of this lab can be used in practical production as soon as possible. We are willing to provide technical cooperation.