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拖拉机长期使用后,技术状态会逐渐变坏,从而引发各种故障。这些故障形成的原因有以下几个方面。 一、零件的磨损 拖拉机零件的磨损原因是多方面的。首先,因为零件工作表面加工后,从微观来看是凹凸不平的,在工作过程中,由于外力的作用,配合表面凸起部分的金属微粒不断脱落,引起磨损;其次,是零件表面脱落的金属微粒或由空气、燃油、润滑油带入的杂质微粒,在相互运动表面起到磨擦作用,造成零件的磨损;再次,是由于在零件相互运动表面某处接触压力过大,将表面的润滑油膜挤破,发生抓粘磨损。根据磨损发生的原因,其预防措施有:
After long-term use of the tractor, the technical status will gradually deteriorate, causing various faults. The causes of these failures are the following aspects. First, the wear and tear of parts Tractor parts wear is due to many reasons. First of all, because parts work surface after processing, from the microscopic point of view is uneven, in the course of work, due to external forces, with the convex surface of the metal particles continue to fall off, causing wear and tear; Second, the parts surface of the metal off Particles or particles of air, fuel, lubricating impurities into the impurities in the movement of the surface play a role in friction, resulting in parts wear and tear; Third, due to contact parts of the surface of the contact pressure is too large somewhere, the surface of the lubricating film Squeezed broken grip friction occurred. According to the reasons for wear and tear, the preventive measures are: