機械设计制造毕业设计论文一种高压断路器电动操作机构的设计和加工工艺研究.docVIP

河南农业大学 本科生毕业论文（设计） 题 目 一种高压断路器电动操作机构的设计和加工工艺研究 学 院 机电工程学院 专业班级 07级机制4班 学生姓名 程少华 指导教师 张秀丽 撰写日期：2011年5月10日 摘 要 电动操动机构可以实现高压断路器的“合”、“分”、“接地”三工位动作。弹簧操动机构是一种以弹簧作为储能元件的机械式操动机构。弹簧的储能借助电动机通过减速装置来完成，并经过锁扣系统保持在储能状态。开断时，锁扣借助磁力脱扣，弹簧释放能量，经过机械传递单元使高压断路器实现合分闸运动。设计出一种弹簧操动机构，使其输出扭矩为，输出转速为。为了尽量避免弹簧操动机构存在的手动操作费力、传动不能准确到位等问题，设计出一种手动脱开机构，当搬动手柄轴调至手动位置时，手动合分闸需要的力量适中。本文介绍了高压断路器操动机构的发展历史及各种操动机构的优缺点，并针对一种高压断路器合分闸需要的扭矩，对其进行电动操作机构的设计，并着重介绍了操作机构主要零部件轴、齿轮的强度计算、机构设计和机械加工工艺的制定，以及操作机构箱体的机械加工工艺的研究和箱体钻孔的夹具设计。 关键词：电动操作机构；强度计算；结构设计；加工工艺；夹具设计 The design and processing technology research of a kind of high voltage circuit breaker electric operator Abstract Electric operation system can realize of high voltage circuit breaker close, points, ground 3 Labor movements. Spring operation structure is a spring as energy-storage components mechanical operation structure. Springs stored energy completes with the aid of the electric motor through the decelerating device, and maintains at after the lock catch system the stored energy condition. Open circuit, lock using magnetic tripping, spring release energy, after mechanical transmission unit to realize high voltage circuit breaker fits break-brake movement. Designs one kind of spring to hold the drive mechanism, causes its output torque is 90~110N.m, the output rotational speed is 5r/min.In order to avoid spring operation manual operation of dynamic organizations are not accurate in place strenuous and transmission, design a kind of manual withdraw institutions, when move handle axis moves to a manual position, manual close break-brake need strength moderate. This paper introduces the high voltage circuit breaker operation structure and history of the advantages and disadvantages of various operation system, and in the light of a kind of high voltage circuit breaker close break-brake need torque, and carry on the electric operator design, and emphatically introduces the major parts of