一种沉井潜入式竖井掘进机结构设计与研究

Structural Design of a Kind of Caisson Submerged Shaft Boring Machine

为解决传统竖井施工中机械化程度低、人力消耗大、安全风险高等问题,研发了一种沉井潜入式竖井掘进机。该掘进机可以实现开挖、出渣、支护同步作业,自动、高效施工。针对沉井潜入式竖井掘进机的相关结构进行研究:1)系统阐述沉井潜入式竖井掘进机的结构组成和工作原理;2)基于受力特性和运动特性,分别对其工作装置进行力学特性分析和运动学特性分析,构建其运动学分析简易模型;3)采用有限元法对关键部件进行静强度分析,得到其对应的应力云图和变形量云图,验证关键部件在强度和刚度方面符合设计要求;4)基于虚拟样机技术对其关键部件以及关键位置处进行运动学研究和动力学研究,得到其位移和受力曲线图。结果表明:该竖井掘进机结构设计、力学特性分析以及运动学分析合理,有限元法和虚拟样机技术运用可行。

The traditional shaft construction has many disadvantages, such as a low degree of mechanization, high manpower consumption, and high risk. As a result, a caisson submerged shaft boring machine is created. With high automation and efficiency, the boring machine can perform simultaneous excavation, mucking, and support operations. Some related structural research regarding the caisson submerged shaft boring machine is conducted as follows:(1) The structure and working principle of the shaft boring machine are systematically explained.(2) The mechanical and kinematic characteristics of the working device are analyzed, and a simple model of its kinematics analysis is constructed.(3) The static strength of the key components is analyzed using the finite element method, and the corresponding nephograms of stress and deformation are obtained, verifying that the key components’ strength and stiffness meet the design requirements.(4) Its key components and positions are subjected to kinematic and dynamic analyses using virtual prototype technology, yielding displacement and force curves. The results show that the structural design, the mechanical property, and the kinematics analysis of the machine are reasonable, and the finite element method and the virtual prototype techniques are feasible.