To provide a hydraulic axle driving device which can easily link a hydraulic servo mechanism for controlling travelling of a vehicle to a hydraulic brake mechanism for operating a parking brake device to achieve improvement of usability.SOLUTION: A hydraulic axle driving device includes: a housing 41 supporting an axle 5R; an infinite variable-speed drive 40; a reduction gear train 50; a parking brake device 2 having a brake rotor 22 and a brake shoe 24; an oil supply mechanism having oil passages 78a, 78b taken out to the outside from the housing 41; a servo set 100 which adjusts output of the infinite variable-speed drive 40. The hydraulic axle driving device has: a spring member 35 which biases the brake shoe 24; and a parking brake mechanism 20 which displaces the brake shoe 24 by oil pressure. The servo set 100 and the parking brake mechanism 20 are connected in parallel to the oil passages 78a, 78b. A solenoid valve 33 is provided closer to the housing 41 side than the servo set 100 and the parking brake mechanism 20.SELECTED DRAWING: Figure 3
【課題】車両の走行を制御する油圧サーボ機構と駐車ブレーキ装置を操作する油圧ブレーキ機構の連係を簡易に図ることができ、使い勝手の向上を図った油圧式車軸駆動装置を提供する。【解決手段】車軸5Rを支持するハウジング41と、無段変速装置40と、減速ギア列50と、ブレーキロータ22と、ブレーキシュー24と、を有する駐車ブレーキ装置2と、ハウジング41から外部へ取り出した油路78a・78bを有する給油機構と、無段変速装置40の出力を調整するサーボセット100と、を備え、ブレーキシュー24を付勢するバネ部材35と、ブレーキシュー24を油圧で変位させる駐車ブレーキ機構20と、を有し、サーボセット100と駐車ブレーキ機構20が、油路78a・78bに対して並列的に接続され、サーボセット100と駐車ブレーキ機構20よりもハウジング41側にソレノイドバルブ33を設けた。【選択図】図3
HYDRAULIC AXLE DRIVING DEVICE
油圧式車軸駆動装置
2019-09-12
Patent
Electronic Resource
Japanese
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