To provide a hydraulic type axle drive device capable of improving centering accuracy of an output shaft of a hydraulic motor.SOLUTION: An axle drive device 1 comprises: an axle drive case 10 which supports axles 2L, 2R and in which an HST chamber 10a and a gear chamber 10b are formed; and an HST 3 and a speed reduction gear row 4 on which, a hydraulic pump 39 and a hydraulic motor 33 are connected through a center case 31. The axle drive case 10 comprises: a partition wall 13 for partitioning the HST chamber 10a and the gear chamber 10b; and an open hole 14 penetrating the partition wall 13. An end part of an output shaft 35 of the hydraulic motor 33 is connected to the speed reduction gear row 4 in the gear chamber 10b through the open hole 14, the center case 31 comprises: a vertical plane 31a on which the hydraulic motor 33 is installed; and a shaft support part 36 provided on an opposite side of the vertical plane 31a. The output shaft 35 is extended in the center case 31 toward the vertical plane 31a and the shaft support part 36, and the end part of the output shaft 35 is provided on an outside of the shaft support part 36.SELECTED DRAWING: Figure 1
【課題】油圧モータの出力軸の芯出し精度の向上を図ることを可能にした油圧式車軸駆動装置を提供する。【解決手段】車軸駆動装置1は、車軸2L・2Rを支持しHST室10aとギヤ室10bが形成された車軸駆動ケース10と、油圧ポンプ39と油圧モータ33とをセンターケース31を介して接続したHST3と減速ギヤ列4とを備え、車軸駆動ケース10は、HST室10aとギヤ室10bとを仕切る隔壁13と、該隔壁13を貫通する貫通孔14を有し、油圧モータ33の出力軸35の端部が、貫通孔14を通じてギヤ室10b内の減速ギヤ列4に接続され、センターケース31は、油圧モータ33を設置する鉛直面31aと、該鉛直面31aとは反対側の軸支部36と、を有し、出力軸35は、鉛直面31aかつ軸支部36に向けてセンターケース31内を延伸されて、出力軸35の端部が、軸支部36の外方に位置されている。【選択図】図1
HYDRAULIC TYPE AXLE DRIVE DEVICE
油圧式車軸駆動装置
2020-03-05
Patent
Electronic Resource
Japanese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |