Design and Validation of a Belt Conveyor Driven by a Linear Motor

仓储应用中的物料搬运系统用于运输单元，从轻的散装物料到单件货物。带式输送机的驱动原理通常由连接到驱动滑轮的电机组成。为了移动传送带，整个进给力必须通过从动滑轮上的摩擦连接来传递。输送带的许用张紧力是带式输送机长度的设计准则。为了达到大的输送距离，需要高标称强度的输送带或分布到多个具有较短轴距的输送机。通过使用线性直接驱动代替从动皮带轮，进给力通过电机长度直接传递到输送带。由于更大的力传递路径，这导致了较低的必要输送带预紧力，以及由于与传统驱动原理相比峰值载荷降低而使用标称强度较低的皮带的机会。在DFG资助的先前研究项目中，两个由直线电机驱动的皮带输送机概念已被建立为原型。因此，这种驱动概念的一般适用性得到了证明。通过与行业合作伙伴的合作，将进一步开发科学研究成果，并根据实际相关性进行评估。该研究项目的目标是开发由直线电机驱动的带式输送机的新科学研究成果，并结合设计和验证可与传统带式输送机进行比较的原型。通过比较，线性直接驱动原理的潜力将在合作伙伴中得到。从合作伙伴的角度来看，目前的科学发现的发展对他们来说是一个高风险，因为重要的科学问题，如电子商务。G.由法向力和制导系统引起的摩擦面积还没有解决。

Material handling systems in warehousing applications are used to transport units, which can differ from light bulk material to single piece goods. The drive principle of belt conveyors typically consists of a motor connected to the drive pulley. To move the conveyor belt the entire feed force has to be transmitted by frictional connection over the driven pulley. The allowed tension force of the conveyor belt is a design criterion for the belt conveyor length. To reach large conveying distances, either conveyor belts with high nominal strength or the distribution to multiple conveyors with shorter axis distances is necessary.By using a linear direct drive instead of the driven pulley, the feed force is transmitted over the motor length directly into the conveyor belt. As consequence of the larger force transmission path, this leads to a lower necessary conveyor belt preload as well as the opportunity to use belts with a lower nominal strength due to the reduced peak load compared to the conventional drive principle.During a previous research project funded by the DFG two concepts of belt conveyors driven by a linear motor have been built up as prototypes. Thus, the general suitability for such drive concepts was shown. In cooperation with partners from industry the scientific findings are to be developed further and evaluated based on scenarios with practical relevance.Goal of the research project is to develop new scientific findings for belt conveyors driven by a linear motor in combination with the design and validation of a prototype which can be compared with conventional belt conveyors. By comparison the potential of the linear direct drive principle is to be derived among the cooperation partners. From the view of the cooperation partners the development of the current scientific findings is a high risk for them, because important scientific issues such as e. g. the area of friction caused by normal forces and the guidance system are not solved yet.