Forced lubrication bearing with distributed holes

Abstract

The invention provides a forced lubrication bearing with distributed holes. A header pipe is arranged in a bearing body, pressurization holes leading to the inner surface of the bearing body are axially and circumferentially formed in the bearing body, all the pressurization holes are gathered in the header pipe in the bearing body, the header pipe is connected with a pressure servo mechanism through a pipeline, if the bearing body is circumferentially spread, the pressurization holes form an M*N grid, the distances between the pressurization holes are not uniformly distributed in axial and circumferential directions, and the distances between the pressurization holes close to the maximum pressure point are decreased gradually. The pressure servo mechanism is started when detecting that ashaft system is under a low-speed operation condition, a pressurization medium is forcedly injected below the operating shaft system through the pressurization holes, so that the pressurization mediumsprayed out of the pressurization holes lifts a position with larger shaft system load, the shaft system is ensured to always form a liquid film with the bearing under the rotation condition, the poor lubrication state of the bearing is improved, and the frictional wear of the bearing is relieved.

Description

technical field [0001] The application of the present invention relates to a radial sliding bearing, specifically a radial sliding bearing with forced lubrication. Background technique [0002] Due to the advantages of large bearing capacity and good adaptability, radial sliding bearings have been widely used in rotating components of ships and machinery. For the above application fields, controlling operating costs and increasing bearing service life are the primary conditions for selecting bearings , so reducing the friction and wear of the bearing system is an important indicator that is given priority in bearing design. Under the rated operating conditions of the shaft system, the shaft and the bearing are separated by a layer of liquid film. Due to the shearing effect of the liquid film, the friction coefficient is not large, and the shaft and bearing operating in the hydrodynamic lubrication stage have very little wear. Almost negligible. However, when the equipment ...

AI Technical Summary

Problems solved by technology

However, when the equipment is turned on and is under relatively high load and low speed conditions, such as the low-speed navigation stage of the ship, especially the start-up stage of the ship shafting, the shaft and the bearing are in partial contact or even direct contact, and the bearing is in a state of mixed lubrication or boundary lubrication. At this time, the friction coefficient of the bearing is very large. If the bearing load is relatively high in this case, the bearing will be severely worn. This is a problem that equipment users try to avoid and cannot avoid.

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