掘进装备推进机构载荷顺应性及其评价方法

发布时间：2018-01-05 11:06

本文关键词：掘进装备推进机构载荷顺应性及其评价方法　出处：《机械工程学报》2014年21期 　论文类型：期刊论文

【摘要】：掘进装备推进机构是掘进装备的重要子系统,需要承受来自作业环境的重载荷、大突变载荷,同时需要传递大推进力,并实现精准的运动和力传递功能。若其刚性不够将难以承受重载荷;若其柔性不足将难以顺应大突变载荷。为解决其在推进过程中刚柔冲突的一对矛盾,保证其快速、准确、可靠、安全掘进,定义掘进装备推进机构载荷顺应性,提出推进机构载荷顺应性设计问题。分别探讨推进机构载荷顺应中心的物理意义及其识别方法,运动耦合性、变形耦合性及弹性储能性的物理意义及其与机构位置精度、所受重载荷、大突变载荷之对应关系。提出涵盖以上三特性的推进机构载荷顺应性设计指标,为建立以顺应中心为设计约束,以载荷顺应最大为设计目标的推进机构载荷顺应性设计方法提供理论基础。通过推进机构载荷顺应性相关指标及其关节反力大小的相关性比较,验证载荷顺应性设计指标的科学性,表明以所提出的载荷顺应度为设计指标,可保证所设计出的推进机构既具备高刚性又具备大柔性,能化解掘进装备在推进过程中刚柔冲突的一对矛盾。
[Abstract]:Tunneling equipment propulsion mechanism is an important subsystem of tunneling equipment, which needs to bear heavy load, large sudden load from operating environment, and need to transfer large propulsion force at the same time. And realize accurate movement and force transfer function. If its rigidity is not enough, it will be difficult to bear heavy load; If its flexibility is insufficient, it will be difficult to adapt to the large sudden load. In order to solve the contradiction of rigid and flexible conflict in the process of propulsion, ensure its fast, accurate, reliable and safe tunneling, define the load compliance of the propulsion mechanism of the tunneling equipment. The problem of load compliance design of propulsion mechanism is put forward, and the physical meaning of load compliance center of propulsion mechanism and its identification method and kinematic coupling are discussed respectively. The physical meaning of deformation coupling and elastic energy storage and the corresponding relationship between deformation coupling and mechanism position accuracy, heavy load and large abrupt load are proposed. The design index of load compliance of propulsion mechanism covering the above three characteristics is proposed. In order to establish compliance center as the design constraints. The design method of load compliance of propulsion mechanism with the maximum load compliance as the design objective provides the theoretical basis. The correlation between the relative indexes of load compliance and the joint reaction force of the propulsion mechanism is compared. It is proved that the design index of load compliance is scientific and the proposed load compliance can be used as the design index to ensure that the designed propulsion mechanism has both high rigidity and large flexibility. Can resolve the driving equipment in the process of rigid and flexible conflict a pair of contradictions.
【作者单位】：华东交通大学机电工程学院;清华大学机械工程系;
【基金】：国家重点基础研究发展计划(973计划,2013CB035403) 国家自然科学基金(51175174)资助项目
【分类号】：TU621
【正文快照】： *国家重点基础研究发展计划(973计划,2013CB035403)和国家自然科学基金(51175174)资助项目。20131226收到初稿,20140901收到修改稿0前言推进系统是掘进装备关键子系统,需要承受掘进装备工作于恶劣环境下的重载荷、大突变载荷(例如:某型盾构其极限扭矩为500~125 000 k N·m,推

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