Optimization in TBM cutterhead design is essential for increasing its performance. Lace design for the cutters, buckets, and manholes in the cutterhead, is one of the major considerations in the design of the hard rock TBMs. An optimum lace design is necessary to avoid cutterhead deviation, vibration, and stress concentration during its operation. TBM manufacturers usually utilize two common lace designs of radial and spiral configurations. Despite the presence of many advantages for these two designs, each of them has its own disadvantages which may cause difficulties in achieving an efficient design of the cutterhead. This paper introduces a new TBM cutterhead lace design in which all three normal, side, and rolling forces are considered. The new force and moment balancing relationships are presented. With the consideration of the problems of the radial and spiral configurations, a new method of “uniformly distributed lace design” is introduced and the steps of achieving the final layout of the cutterhead is explained with its required parameters. On the basis of an example, a comparative study is made among three methods of applying radial, spiral, and uniformly distributed lace designs. The results show that the new method is very efficient in both uniformly and symmetrically distributing the cutters, buckets, and manholes on the cutterhead surface with no boundary conflicts. It also has the advantage to have low unbalanced forces and moments.

TBM刀盘设计的优化对于提高其性能至关重要。刀盘中的刀具，铲斗和人孔的花边设计是硬岩TBM设计中的主要考虑因素之一。最佳的鞋带设计对于避免刀头在操作过程中的偏斜，振动和应力集中是必要的。TBM制造商通常采用两种常见的径向和螺旋形花边设计。尽管这两种设计都具有许多优点，但它们各自都有其缺点，这可能会导致难以实现刀头的有效设计。本文介绍了一种新的TBM刀盘式鞋带设计，其中考虑了所有三个法向力，侧向力和滚动力。提出了新的力和力矩平衡关系。考虑到径向和螺旋结构的问题，介绍了一种“均匀分布的鞋带设计”的新方法，并通过其所需参数说明了实现刀盘最终布局的步骤。在一个示例的基础上，对三种应用放射状，螺旋状和均匀分布的花边设计的方法进行了比较研究。结果表明，该新方法在刀盘表面上均匀，对称地分配刀具，铲斗和人孔方面非常有效，并且没有边界冲突。它还具有低不平衡力和力矩的优点。介绍了一种“均匀分布的鞋带设计”的新方法，并解释了实现刀头最终布局的步骤及其所需的参数。在一个示例的基础上，对三种应用放射状，螺旋状和均匀分布的花边设计的方法进行了比较研究。结果表明，该新方法在刀头表面均匀，对称地分配刀具，铲斗和人孔均非常有效，且没有边界冲突。它还具有较低的不平衡力和力矩的优点。介绍了一种“均匀分布的鞋带设计”的新方法，并解释了实现刀头最终布局的步骤及其所需的参数。在一个示例的基础上，对三种应用放射状，螺旋状和均匀分布的花边设计的方法进行了比较研究。结果表明，该新方法在刀盘表面上均匀，对称地分配刀具，铲斗和人孔方面非常有效，并且没有边界冲突。它还具有较低的不平衡力和力矩的优点。刀盘表面的沙井没有边界冲突。它还具有较低的不平衡力和力矩的优点。刀盘表面的沙井没有边界冲突。它还具有较低的不平衡力和力矩的优点。