A Forced Lubricated Bearing with Distributed Pores

Abstract

The invention provides a forced lubrication bearing with distributed pores. There is a main pipe inside the bearing body, and the bearing body has pressure holes leading to the inner surface of the bearing body along the axial and circumferential directions. All the pressure holes converge in the main pipe inside the bearing body. When the body expands in the circumferential direction, the pressurization holes form a grid of M×N, and the spacing between the pressurization holes is unevenly distributed along the axial and circumferential directions, and the spacing between the pressurization holes near the point of maximum pressure gradually decreases . The pressure servo mechanism starts when it detects that the shafting is running at a low speed, and injects the pressurized medium under the running shafting through the pressure hole, so that the pressurized medium ejected from the pressure hole has a greater load on the shafting Lifting is carried out to ensure that a liquid film is always formed between the shaft system and the bearing when it is rotating, so as to improve the state of poor lubrication of the bearing and alleviate the friction and wear of the bearing.

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.

Images