联合收割机是农机产品中较为复杂、科技含量较高的一种大型农机具，集收割、脱粒、分离和清选功能于一体，用于收割小麦、水稻等农作物，适合于平原或丘陵地区。由于收获季节性强，时间短，加上地理环境、作物性质不一，因此收割机工作时作业强度高，条件恶劣，必须具备优良的 Combine harvester is a large-scale farm machinery with complicated and high-tech products in agriculture. It integrates harvesting, threshing, separating and cleaning functions and is used for harvesting crops such as wheat and rice and is suitable for plains or hilly areas. Due to seasonal harvest, short time, coupled with the geographical environment, the crops of different nature, so harvester work intensity, poor conditions, you must have excellent