整平机升降系统设计与分析

本文依托一种自浮式水下基床整平机,对该整平机上的重要的组成部分——升降系统进行了设计与分析,提出了一种结构简单、运行可靠的升降系统；对组成升降系统的升降机构提出了液压环梁插销式升降机构、齿轮齿条式升降机构和液压缸升降机构,对支撑机构考虑了十字转动支撑机构和万向球轴承支撑机构,对锁紧机构提出了楔块锁紧机构和棘爪锁紧机构,通过对各种方案进行分析论证,最终确定了升降系统由液压缸升降机构、十字转动支撑机构和棘爪锁紧机构组成；最后对棘爪锁紧机构进行了瞬态动力学计算,计算结果得出棘爪锁紧机构所受最大应力为154.52MPa小于其许用应力172.5MPa,验证了棘爪锁紧机构的强度满足要求。

Design and Analysis of the Lifting System for Leveling machine

Based on a self-floating underwater bed leveling machine, this paper designs and analyzes the lifting system, an important part of the leveling machine, and proposes a lifting system with simple structure and reliable operation. For the lifting mechanism which is composed of lifting system, the hydraulic ring beam bolt type lifting mechanism, gear and rack type lifting mechanism and hydraulic lifting mechanism are proposed. And cross rotation supporting mechanism and universal ball bearing supporting mechanism are considered for the device supporting. Besides, a wedge lock mechanism and a pawl lock mechanism are proposed for the lock mechanism. Finally, the lifting system is composed of hydraulic lifting mechanism, cross rotating supporting mechanism and pawl locking mechanism. At last, the transient dynamics of the pawl locking mechanism was calculated, and the results show that the maximum stress of the pawl locking mechanism is 152.52MPa that less than the allowable stress, 172.5MPa, which verifies that the strength of the pawl locking mechanism meets the requirements.