【摘要】 针对普通径向力补偿方法难以解决圆弧螺旋齿轮泵在高速高压下径向力剧增的问题，建立了齿轮轴受力数学模型，设计出一种新型滑动轴承，对剧增的径向力进行补偿，即圆弧螺旋齿轮泵压油腔内的高压油通过滑动轴承进油口流入滑动轴承的静压槽内，作用在齿轮轴上，以补偿径向力；然后利用Fluent软件对高速高压工况下新型滑动轴承与普通滑动轴承的承载特性进行对比分析，并通过实验进行验证。研究结果表明：新型滑动轴承静压槽内的油液压力与负载压力变化一致，且静压槽内油液压力未产生压降，补偿不平衡径向力效果显著，大大降低了轴承磨损；在额定压力为25 MPa工况下，相对于普通滑动轴承，新型滑动轴承承载能力提升了约4倍，温升降低了10℃。更多还原

【Abstract】 Aiming at the problem that the radial force of circular arc helical gear pump increased sharply under high speed and high pressure, the mathematical model of gear shaft force was established and a new type of sliding bearing was designed to compensate the radial force.That is, the high pressure oil in the oil pressure chamber of the circular arc helical gear pump enters the static pressure groove of the sliding bearing through the oil inlet hole of the bearing and acts on the gear shaft to compensate the radial force.Then, the software Fluent was used to compare and analyze the bearing characteristics of the new type sliding bearing and ordinary sliding bearing under high speed and high pressure conditions, and it was verified by experiments.The results show that the oil pressure in the static pressure groove of the new sliding bearing changes in the same way as the load pressure and the oil pressure in the static pressure groove does not produce pressure drop, so the compensation effect of unbalanced radial force is significant, and the bearing wear is greatly reduced.Under the rated pressure of 25 MPa, compared with ordinary sliding bearings, the bearing capacity of the new sliding bearings is increased by about 4 times and the temperature rise is reduced by 10 ℃.更多还原