A Hydraulic-Based Gap Adjustable Sliding Bearing

Abstract

The invention discloses a hydraulic-based clearance-adjustable sliding bearing. The working clearance of the bearing is adjusted according to different working conditions, and the bearing is applicable to wide-range changes of working conditions. According to the adopted technical scheme, the bearing comprises a bearing supporting rotor, the bearing supporting rotor is sleeved with a tile piece, the tile piece comprises a plurality of tile blocks which form the annular tile piece, bearing deformation cavities are formed in the tile blocks and close to the inner wall faces of the tile blocks, compression cavities are formed in the tile blocks, one ends of the compression cavities communicate with the bearing deformation cavities, the other ends of the compression cavities communicate with the exteriors of the tile blocks, inlet portions of the compression cavities are provided with adjusting elements, the adjusting elements are in closed connection with the compression cavities, the compression cavities and the bearing deformation cavities are filled with hydraulic oil, the adjusting elements can act to squeeze hydraulic oil, the hydraulic oil presses the bearing deformation cavities to deform the inner wall faces of the tile blocks, and therefore the operation clearance between the inner wall faces of the tile blocks and the bearing supporting rotor is changed.

Description

technical field [0001] The invention belongs to the technical field of sliding bearings, and in particular relates to a sliding bearing with adjustable clearance based on hydraulic pressure. Background technique [0002] As a kind of radial sliding support, the sliding bearing takes advantage of the advantages of fluid lubrication and has the characteristics of stability, no noise and low vibration under reasonable design conditions. Therefore, it is used in many important occasions with high safety requirements, such as generator sets, Sliding bearings play an important role in gas turbines, high-speed spindles and other fields. Sliding bearings are divided into dynamic pressure sliding bearings, static pressure sliding bearings and dynamic and static pressure sliding bearings according to their support types. . The design of sliding bearings is based on specific conditions. In the actual production process, even if the same equipment is safe to operate under different wo...

AI Technical Summary

Problems solved by technology

For example, in low-speed and heavy-load conditions, the bearing needs to have a small clearance to ensure that the bearing has sufficient bearing capacity and sufficient minimum oil film thickness to support the safe operation of the equipment; but in high-speed and light-load conditions, the bearing needs to have Larger clearance to increase the amount of lubricating oil and limit the temperature rise of the bearing; therefore, under these two working conditions, the contradiction between the design requirements of the bearing clearance is irreconcilable

Traditional sliding bearings with fixed clearances often have to be compromised in design and manufacture, resulting in the bearings not being able to achieve optimal working conditions in both working conditions, which will seriously affect the service life of the bearings

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