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Skill analysis: the smooth principle of split sliding bearings

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Split sliding bearing, also known as split sliding bearing; consists of bearing, bearing seat, split bearing bush, gasket, bolt, etc.; Xinqiao Pyrite Mine Concentrator has 5 sets of 2700×3600 ball mills, 2 sets of 2100 ×3600 rod mill and 5 400kW synchronous motors all use split sliding bearings. Know the bearing layout, smoothing principle and device technology; protection and protection of these large equipments in mines is an important task.
1 Smooth principle The smooth formation of this bearing has roughly three processes; the shaft is at its lowest position due to its own component when the shaft is stopped; the smooth oil is extruded by the journal; the wedge-shaped clearance is formed between the bearing and the side of the journal; When rotating; because the viscosity of the oil adheres to the surface of the metal; the oil layer rotates with the shaft; when the oil layer passes through the wedge-shaped clearance; because the molecules are kneaded and their own kinetic energy; the pressure on the shaft will rise axially; when it reaches a certain At the time of speed; the oil pressure on the shaft increases; the shaft and the bearing surface are completely separated by the oil film; then the liquid dynamic pressure is smooth. The conditions for the liquid dynamic smoothness are:
1 The journal and the bearing should have a certain clearance after cooperation; usually equal to 1/1000~3/1000 of the neck diameter,
2 It is necessary for the journal to have a certain line speed; to establish the satisfaction of the oil wedge pressure,
3 It is necessary to continuously fill the oil with a certain viscosity between the two working surfaces.

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