PROBLEM TO BE SOLVED: To provide a gear device for railroad vehicle in which a space can be formed at a lower side of a portion of a gear box defining a storage space of a pinion without impairing a function of guiding a part of a lubricant that is scraped up by rotating a gear wheel, to an oil reservoir chamber as further as possible.SOLUTION: In a gear device GM for railroad vehicle in which, within a gear box Gb, a pinion 2 and a gear wheel 4 are stored while being engaged with each other in a horizontal direction and which comprises an oil reservoir chamber 62 in which a lower part of the gear wheel is immersed. The gear box Gb is configured by providing a small box part 5 defining a storage space of the pinion 2 and a large box part 6 defining a storage space of the gear wheel successively in the horizontal direction, and has an arcuate peripheral wall part enclosing a portion of the pinion spaced apart from an engage part with the gear wheel for a predetermined interval in a circumferential direction. The oil reservoir chamber 81 is provided protrusively on a side surface of the large box part in an axial direction while being positioned lower than the pinion. An oil reservoir groove 52 for receiving a lubricant Go is recessed on a bottom of an inner surface of the small box part. A communication path 53 is provided for communicating the oil reservoir chamber and the oil reservoir groove.SELECTED DRAWING: Figure 1
【課題】大歯車の回転で掻き揚げられた潤滑油の一部を可及的に油溜め室に導くという機能を損なうことなく、小歯車の格納空間を画成する歯車箱の部分の下方に空間ができるようにした鉄道車両用歯車装置を提供する。【解決手段】歯車箱Gb内に小歯車2と大歯車4とが互いに水平方向に噛み合せた状態で格納され、大歯車の下部を浸漬する貯油室62を持つ鉄道車両用歯車装置GMにおいて、歯車箱Gbが、小歯車2の格納空間を画成する小箱部5と、大歯車の格納空間を画成する大箱部6とを水平方向に連設して構成され、小箱部が、大歯車に対する噛合い部から周方向に所定間隔離れた小歯車の部分を囲う円弧状の周壁部を持つ。油溜め室81が、小歯車より下方に位置させて大箱部の軸方向の側面に突設され、小箱部の内面底部に潤滑油Goを受ける油溜め溝52が凹設され、油溜め室と油溜め溝とを連通する連通路53が設けられる。【選択図】図1
GEAR DEVICE FOR RAILROAD VEHICLE
鉄道車両用歯車装置
2017-04-27
Patent
Electronic Resource
Japanese
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