Single-rotation-direction four-oil-wedge inner hole heavy-load sliding bearing

Abstract

The invention provides a single-rotation-direction four-oil-wedge inner hole heavy-load sliding bearing. A bearing body is divided into an upper bearing body and a lower bearing body. The upper bearing body and the lower bearing body are connected through screws and cylinder pins. Four pads are installed in the bearing body. Four oil inlet holes phiD are designed in the bearing body and penetratethrough the inner circle and the outer circle of the bearing body. The four oil inlet holes are distributed among the pads. An inner hole of the sliding bearing and a shaft form four wedge-shaped oilwedges. During start, the four pads form four uniform oil wedges, and the shaft can be stably started. Finally, hydrodynamic pressure is generated in each oil wedge, and the oil film rigidities in allthe directions are uniform. In this way, the four-oil-wedge sliding bearing of the structure has the performance characteristics of being high in rotation precision, good in centering performance, high in oil whipping resistance, high in rigidity and high in damping. Meanwhile, since the pad inner holes can be installed on the bearing body to form the four oil wedges after being fine machined, the phenomenon that since the inner hole of an integrated four-oil-wedge sliding bearing can be only formed through milling, the axial taper defect, the circumferential cutter grain defect and other defects of the inner hole are caused is avoided; and besides, when the pads are independently machined, the advantages of direct measurement, convenience and the like are achieved.

Description

technical field [0001] The invention belongs to the technical field of structural design of mechanical sliding bearings, and mainly relates to the structural design of four oil wedges and single-rotation oil wedges in inner holes of heavy-duty sliding bearings. Background technique [0002] At present, the main forms of four-oil wedge sliding bearings in the domestic and foreign fields are as follows: figure 1 , the bearing is divided into upper and lower halves, the four oil wedge surfaces in the inner hole of the bearing are designed as one with the bearing body, and the centers of the four oil wedges are distributed in diameters of The four oil wedges are two-way oil wedges (the shaft can rotate clockwise or counterclockwise relative to the inner hole of the bearing) on ​​the indexing circle of the bearing. The bearing capacity is small and it is suitable for light loads. Since the centers of the four oil wedge surfaces have a certain eccentricity with respect to the ce...

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Problems solved by technology

[0003] In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide a single-rotation four-oil wedge inner hole heavy-duty sliding bearing, which ensures that the structure of the bearing can make the shaft have high rotation accuracy, good centering, and oil film vibration resistance under heavy load conditions. Large capacity, high rigidity and large damping, etc., and solve the problems of difficult processing and difficult measurement in the existing production technology

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