1、看结合部位是否平整。自动搅拌一体车零配件在搬运、存放过程中,由于振动、磕碰,常会在结合部位产生毛刺、压痕、破损或裂纹,影响自动搅拌一体车零件的使用。选购时应注意检查。
1. See if the joint is smooth. During the transportation and storage of concrete mixer parts, due to vibration and collision, burr, indentation, damage or crack often occur at the joint, which affects the use of concrete mixer parts. Pay attention to the inspection when purchasing.
2、看零件表面有无锈蚀。合格的自动搅拌一体车零配件表面,既有一定的精度又有铮亮的光洁度,越是重要的零配件,精度越高,包装防锈防腐越严格。选购时应注意检查,若发现混凝土搅拌车零件有锈蚀斑点、霉变斑点或橡胶件龟裂、失去弹性,或轴颈表面有明显车刀纹路,应予调换。
2. Check the surface of parts for corrosion. The surface of qualified concrete mixer parts has a certain precision and a bright finish. The more important the parts are, the higher the precision is, the more strict the anti rust and anti-corrosion of packaging is. When purchasing, pay attention to inspection. If the parts of concrete mixer truck are found with rust spots, mildew spots, rubber parts cracked or lose elasticity, or there are obvious turning tool lines on the surface of shaft neck, they should be replaced.
3、看转动部件是否灵活。选购机油泵等转动部件总成时,用手转动泵轴,应感到灵活无卡滞;选购自动搅拌一体车车滚动轴承时,一手支撑轴承内环,另一手打转外环,外环应能快速自如转动,然后逐渐停转。若转动部件转动不灵,说明内部锈蚀或产生变形,不要购买。
3. See if the rotating parts are flexible. When purchasing the oil pump and other rotating parts assembly, the pump shaft should be rotated by hand to feel flexible without sticking; when purchasing the rolling bearing of the concrete mixer truck, one hand should support the inner ring of the bearing, the other hand should rotate the outer ring, and the outer ring should be able to rotate quickly and freely, and then stop gradually. If the rotating parts do not work well, it means that the internal corrosion or deformation, do not buy.
4、看几何尺寸有无变形。有些自动搅拌一体车配件零件因制造、运输、存放不当,易产生变形。检查时,可将轴类零件沿玻璃板滚动一圈,看零件与玻璃板贴合处有无漏光来判断是否弯曲。
4. See if the geometry is deformed. Some parts of concrete mixer truck are easy to deform due to improper manufacture, transportation and storage. During the inspection, the shaft parts can be rolled along the glass plate for a circle to see whether there is light leakage at the joint between the parts and the glass plate to judge whether it is bent.
选购自动搅拌一体车离合器从动盘钢片或摩擦片时,可将钢片、摩擦片举在眼前观察其是否翘曲;在选购油封时,带骨架的油封端面应呈正圆形,能与平板玻璃贴合无挠曲;无骨架油封外缘应端正,用手握使其变形,松手后应能恢复原状。在选购各类衬垫时,也应注意检查几何尺寸及形状。
When choosing the steel plate or friction plate of the clutch driven plate of the concrete mixer, you can lift the steel plate and friction plate in front of your eyes to observe whether they are warped; when choosing the oil seal, the end face of the oil seal with framework should be in a normal circle, which can fit with the flat glass without bending; the outer edge of the oil seal without framework should be straight, which should be deformed by hand, and can be restored to the original state after releasing. In the purchase of various types of gasket, also pay attention to check the geometric size and shape.