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近几年来,齿轮泵的结构型式越来越多,尤其是并联的双联齿轮泵,它已更为普遍应用。在国产新一代联合收割机上,现已使用了2CB3-E□/□LF 型双联齿轮泵。该泵结构新颖,为整体式结构,它与两个单级齿轮泵组合而成的2CBN-E300/300型双联齿轮泵相比,体积小、重量轻,可简化主机液压系统和节能。本文介绍这种整体式双联齿轮泵齿轮轴强度的计算。齿轮轴受力分析2CB3-E□/□LF 型双联齿轮泵结构如图1所示。在主动齿轮轴1的一端空套着另一个泵的被动齿圈5;在从动齿轮轴2的一端用普通平键4联接着另一个泵的主动齿圈3。当主动齿轮轴1旋转时,则带动从动齿轮轴2一起旋转,从而使另一个泵的主动齿圈驱动其被动齿圈旋转。这样的传递方式使齿轮轴受力合理。在齿轮泵中,轴上的载
In recent years, more and more gear pump structure, especially in parallel double gear pump, it has been more widely used. In a new generation of domestic combine harvester, has now used 2CB3-E □ / □ LF double gear pump. The pump has a novel structure and a monolithic structure. Compared with the 2CBN-E300 / 300 double gear pump which is a combination of two single-stage gear pumps, the pump is simple in structure and light in weight, which can simplify the host hydraulic system and save energy. This article describes the calculation of the gear shaft strength of this integral double gear pump. Gear shaft force analysis 2CB3-E □ / □ LF double gear pump structure shown in Figure 1. One end of the driving gear shaft 1 is loosely fitted with a passive ring gear 5 of the other pump; one end of the driven gear shaft 2 is connected with the driving ring gear 3 of the other pump by an ordinary flat key 4. When the pinion shaft 1 rotates, the driven gear shaft 2 is driven to rotate together, so that the driving ring gear of the other pump drives the driven ring gear to rotate. This way of transmission makes the gear shaft force reasonable. In the gear pump, the shaft load