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丰收—27和丰收—35型拖拉机配用的丰收4—6型分配式喷油泵,在使用中易出现分配套筒与分配转子咬死的毛病。一旦分配套筒与分配转子咬死,整个分配泵就报废了。本文仅从使用角度来分析分配套筒与分配转子咬死的原因,同时提出防止咬死的措施。一、分配泵的缺陷分配泵本身有以下三方面的缺陷: 1.润滑条件差分配泵采用燃油润滑。燃油流动性好,但粘度低,所以转子和套筒配合面间形成的油膜表面张力较弱,且稳定性差。 2.转子和套筒的配合间隙小转子和套筒的配合间隙仅有0.0025～0.0035毫米,且偶件的加工精度也不易保证,所以,只要有一点误差,金属表面的吸附
Harvest -27 and Harvest -35 tractors equipped with bumper Harvest 4-6 type injection pump, easy to use in the distribution sleeve and the distribution of rotor bite death problems. Once the distribution sleeve and the distribution rotor have been killed, the entire distribution pump is scrapped. This article only from the perspective of the use of distribution sleeve and distribution of the reasons for the death of the rotor, and put forward measures to prevent seizures. First, the distribution of pump defect distribution Pump itself has the following three flaws: 1. Lubrication conditions Poorly distributed pumps with fuel lubrication. Fuel flow is good, but the viscosity is low, so the surface tension between the rotor and sleeve with the formation of the surface of the oil film is weak, and the stability is poor. 2. The rotor and the sleeve with the gap Small rotor and sleeve with the gap of only 0.0025 ~ 0.0035 mm, and even the machining accuracy of the workpiece is not easy to ensure, so long as there is a little error, the metal surface adsorption