The invention provides a tractor reverse gear transmission structure which comprises a gearbox body and a rear axle box body. The reverse-gear driving gear shaft, the space ring, the first needle bearing, the reverse-gear driven gear, the reverse-gear meshing seat, the reverse-gear meshing sleeve, the locking nut, the locking gasket, the forward-gear spline shaft, the second needle bearing, the thrust pad, the third needle bearing, the reverse-gear shifting block, the reverse-gear shifting shaft, the fastening bolt, the reverse-gear intermediate shaft and the reverse-gear intermediate gear are installed in the gearbox body and the rear axle box body. The invention relates to a self-locking auxiliary speed change device, which comprises an auxiliary speed change duplicate gear, a creeper gear inner tooth holder, a creeper gear meshing sleeve, a creeper gear shifting fork, a bearing seat, a small bevel gear shaft, a transfer case driving gear and an auxiliary speed change output shaft, wherein the auxiliary speed change duplicate gear, the creeper gear inner tooth holder, the creeper gear meshing sleeve, the creeper gear shifting fork, the bearing seat, the transfer case driving gear and the auxiliary speed change output shaft are arranged on the auxiliary speed change duplicate gear. The structure is simple, the axial size is short, less power flows through a gear pair during reverse gear, power loss is reduced, and the transmission efficiency is improved.

    本发明提供了一种拖拉机倒档传动结构,包括变速箱体和后桥箱体,以及安装在变速箱体和后桥箱体内部的倒档主动齿轮轴、隔圈、滚针轴承一、倒档被动齿轮、倒档啮合座、倒档啮合套、锁紧螺母及止动垫片、前进档花键轴、滚针轴承二、止推垫、滚针轴承三、倒档拨头、倒档换档轴、紧定螺栓、倒档中间轴、倒档中间齿轮、压板、弹性销、安全启动开关、倒档拨叉轴、自锁组件、倒档拨叉和相关连接零部件,所述相关连接零部件包括副变速双联齿轮、爬行档内齿座、爬行档啮合套、爬行档拨叉、轴承座、小锥齿轮轴、分动箱主动齿轮和副变速输出轴。本发明结构简单,轴向尺寸短,并且实现倒档时功率流经齿轮副较少,减少动力损失,提高传动效率。


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    Title :

    Reverse gear transmission structure of tractor


    Additional title:

    一种拖拉机倒档传动结构


    Contributors:
    WANG CHANGHUA (author) / LIU LANXIN (author) / WANG JUANJUAN (author) / SONG MEIHUA (author) / LIU YING (author)

    Publication date :

    2023-09-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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