上海-50型拖拉机,在夏季抢收小麦作业时,发动机水箱时有“开锅”现象发生。这是因为收割小麦时,尘埃和秸秆杂余被吸入散热器缝隙内,严重影响散热。针对上述现象,今年我镇8台上海-50型拖拉机全部装了防尘罩,使拖拉机在进行收获作业时,水温始终保持在80～90℃范围内。防尘罩的制作比较简单,用1毫米薄板焊接成长方形的罩,外形 Shanghai -50 tractors, grab the wheat in summer operations, the engine when the water tank “boil ” phenomenon occurred. This is because when wheat is harvested, dust and stubble are sucked into the gap of the radiator, seriously affecting the heat dissipation. In response to the above phenomenon, this year my town 8 Shanghai-50 tractor mounted dust cover, the tractor harvesting operations, the water temperature is always maintained at 80 ~ 90 ℃ range. Dust cover made of relatively simple, with 1 mm sheet welded into a rectangular cover, shape