1 引言三合一减速机早在七十年代开始在欧洲一些国家问世,后来在日本、美国相继获得推广,经20多年的生产改进,迄今已成为一种结构性能先进、使用方便可靠、在目前国际市场上广受用户欢迎的动力驱动装置。它适用于起重运输、冶金矿山、石油化工、建筑和食品等机械配套设备上,特别在起重运输机械方面更加显示出它的独特优点。 1 Introduction The three-in-one reducer was first introduced in some countries in Europe as early as the 1970s, and was successively promoted in Japan and the United States. After more than 20 years of production improvement, it has become an advanced structural performance, easy to use, and reliable. In the international market, the power drive is popular among users. It is suitable for lifting and transportation, metallurgical and mining, petrochemical, construction and food and other machinery supporting equipment, especially in the lifting of transport machinery to show its unique advantages.