Lubricating oil self-circulating sliding bearing device

Abstract

The invention discloses a lubricating oil self-circulation sliding bearing device for radially supporting a main shaft. The sliding bearing device comprises a shaft journal sleeve and a bearing seat,wherein the shaft journal sleeve sleeves the main shaft; the shaft journal sleeve is wrapped by the bearing seat; the bearing seat is in a split type; the bearing seat comprises the upper bearing seatand the lower bearing seat; the upper bearing seat is connected with the lower bearing seat through fasteners; the shaft journal sleeve is in tight fit with or in transmission connection with the main shaft; an upper shaft bushing surface is arranged on the inner surface of one side, facing the lower bearing seat, of the upper bearing seat; a lower shaft bushing surface is arranged on one side, facing the upper bearing seat, of the lower bearing seat; the shaft journal sleeve comprises flanges arranged at two ends of a sleeve; the upper shaft bushing surface and the lower shaft bushing surface are two parts of the same cylindrical surface and jointly wrap a part between the flanges of the shaft journal sleeve; the flanges respectively abut against the two end surfaces of the bearing seat;the upper shaft bushing surface and the lower shaft bushing surface are provided with oil grooves; each oil groove is annular with the main shaft as an axis; and the upper bearing seat is provided with an oil hole, and the oil hole is connected with the groove bottoms of the oil grooves and the outer surface of the upper bearing seat.

Description

technical field [0001] The invention relates to the field of sliding bearings, in particular to a lubricating oil self-circulating sliding bearing device. Background technique [0002] Sliding bearings are a kind of bearings that work under sliding friction. Compared with rolling bearings, they can bear a larger load. When the bearing precision is high, the bearings work smoothly, reliably and without noise. Sliding bearings are generally used in high-speed heavy-duty, Light load and other extreme occasions. [0003] In the prior art, sliding bearings generally use a monolithic structure, and although lubricating oil is injected on the friction surface, the heat generated after friction cannot be handled well. Sometimes cooling water is directly used to cool the bearing seat, and the friction surface The heat is transferred to the outer surface of the bearing housing through heat conduction, which requires a complex cooling water structure. In the prior art, the lubricatin...

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Problems solved by technology

[0003] In the prior art, sliding bearings generally use a monolithic structure, and although lubricating oil is injected on the friction surface, the heat generated after friction cannot be handled well. Sometimes cooling water is directly used to cool the bearing seat, and the friction surface The heat is transferred to the outer surface of the bearing seat through heat conduction, which requires a complex cooling water structure

In the prior art, the lubricating oil of sliding bearings is also applied unevenly on the friction surface. The oil is injected into the contact surface through an oil groove and an oil injection hole, and most of it can only be filled to the area near the oil groove, which cannot ensure full coverage of the friction surface. , which may lead to greater frictional heat and severe wear

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