纯电动装载机直齿斜齿混合传动变速箱

Abstract

本实用新型公开了一种纯电动装载机直齿斜齿混合传动变速箱：一轴、二轴、三轴和输出轴安装在箱体内部；一轴为输入轴，用花键和电机连接，其主动齿轮为斜齿轮和一轴采用整体式，通过与二轴被动齿轮啮合构成一级减速；二轴上设两个斜齿轮，其被动齿轮用花键和二轴装配，主动齿轮和二轴采用整体式，主动齿轮与三轴被动齿轮啮合构成二级减速；三轴有三个齿轮，被动齿为斜齿轮用花键和三轴连接，一个主动齿和三轴采用整体式，另一个通过花键与三轴连接，两个主动齿均为直齿轮分别与输出轴高转速齿轮、低转速齿轮啮合，构成三级减速，三级减速的主、被动齿轮均为圆柱直齿轮；本实用新型结构简单紧凑、制作与维护成本低、传动平稳噪音低、使用寿命长。

Claims

1. A hybrid spur and helical gear transmission gearbox for a pure electric loader, comprising a primary shaft (1), a secondary shaft (2), a tertiary shaft (3), a housing (4), an output shaft (5), a shift sleeve (6), a high-speed gear (7), a low-speed gear (8), and a shifting mechanism (9); wherein the primary shaft (1), secondary shaft (2), tertiary shaft (3), and output shaft (5) are installed inside the housing (4); characterized in that, The first shaft (1) is an input shaft, connected to the motor via a spline. Its driving gear and the first shaft are integral. The driving gear is a helical gear, which meshes with the driven gear of the second shaft (2) to form a first-stage reduction. The second shaft (2) has two gears, both helical gears. Its driven gear is assembled with the second shaft via a spline. The driving gear and the second shaft (2) are integral. The driving gear meshes with the driven gear of the third shaft (3) to form a second-stage reduction. The third shaft (3) has three gears, including one driven gear connected to the third shaft (3) via a spline, and one of the two driving gears. The three shafts (3) are integral, and the other shaft is connected to the three shafts via a spline. The driven gear of the three shafts is a helical gear, and the two driving gears are spur gears that mesh with the high-speed gear (7) and low-speed gear (8) of the output shaft respectively, forming a three-stage reduction. The driving and driven gears of the three-stage reduction are both cylindrical spur gears. The shifting mechanism (9) is located on the output shaft (5), and the shifting sleeve (6) is installed in the middle of the output shaft (5). The high-speed gear (7) is installed on one side of the shifting sleeve (6), and the low-speed gear (8) is installed on the other side of the shifting sleeve (6).

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