Automatic lubrication device for planet wheel bearing

Abstract

The invention relates to an automatic lubrication device for a planet wheel bearing. In the prior art, the lubrication of the planet wheel bearing adopts two modes that: in the process of low-speed transmission, the planet wheel bearing is lubricated from the outside by immersing the planet wheel bearing in an oil sump or splashing oil, but the lubrication mode has the defect of unreliable lubrication; and in the process of high-speed overload transmission, pore paths are formed on a planet wheel carrier and a planet wheel shaft to introduce pressure oil to the plant wheel bearing for lubrication, but the lubrication mode has the obvious defect of complex structure. In the automatic lubrication device for the planet wheel bearing, the conventional planet wheel shaft protrudes out of the planet wheel carrier and is provided with a notch; an axial oil duct and a radial oil duct are arranged in the planet wheel shaft; one end of the axial oil duct is communicated with the bottom of the notch, while the other end is communicated with the radial oil duct; and the outlet of the radial oil duct is arranged at a gap between two plates of bearings to form the automatic lubrication device of the bearing. Compared with oil immersion lubrication or splash lubrication, the automatic lubrication device improves the reliability of the lubrication; and compared with the forced lubrication through the pressure oil, the automatic lubrication device has the advantage of simple structure.

Description

technical field [0001] The invention relates to a reducer and a gyrator, in particular to an automatic lubricating device for planetary gear bearings. technical background [0002] In the prior art, two methods are often used for the lubrication of the planetary wheel bearings: in low-speed transmission, the planetary wheel bearings are often lubricated from the outside by immersing in the oil pool or splashing the oil, which has the disadvantage of unreliable lubrication; In heavy-duty transmission, pressure oil lubrication is often used to ensure reliable lubrication, that is, the pressure oil is introduced to the planetary wheel bearings for lubrication by arranging holes on the planetary wheel carrier and the planetary wheel shaft. The obvious disadvantage is that the structure is more complicated. Contents of the invention [0003] The technical problem to be solved by the invention is to provide an automatic lubricating device for bearings of planetary gear trains wh...

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Problems solved by technology

[0002] In the prior art, two methods are often used for the lubrication of the planetary wheel bearings: in low-speed transmission, the planetary wheel bearings are often lubricated from the outside by immersing in the oil pool or splashing the oil, which has the disadvantage of unreliable lubrication; In heavy-duty transmission, pressure oil lubrication is often used to ensure reliable lubrication, that is, the pressure oil is introduced to the planetary wheel bearings for lubrication by arranging holes on the planetary wheel carrier and the planetary wheel shaft. The obvious disadvantage is that the structure is more complicated

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