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1·Involute profile of internal gear, in the small gear and internal gear intermediate have a crescent shape of the diaphragm, the purpose is the oil absorption cavity and pressure oil cavity off.

渐开线齿形的内啮合齿轮，在小齿轮和内齿轮中间有一块月牙形状的隔板，目的是把吸油腔和压油腔隔开。

2·The vibration fault of a reducer is analyzed. A kind of coupled resonance of the intermediate transmission gear is discovered.

本文研究了某减速器的振动故障，发现并研究了其中介传动齿轮的耦联共振。

3·After operation, observe the oil level in the oil window, preferably at the intermediate mark. Slightly below or beyond the mark will not affect the normal operation of the gear reducer.

运行后观察油窗中的油位在油窗中间刻线处为宜，略高或略底均不会影响减速机的正常运行。