Cross thrust bearing structure of deep-well pump

By designing a cross-shaped thrust bearing structure, the bidirectional swing adaptation of the thrust bearing seat and thrust bearing is achieved, solving the problem of uneven contact in deep well pump bearings, improving bearing stability and lifespan, and reducing the precision requirements for manufacturing.

CN224469357UActive Publication Date: 2026-07-07PENGYANG PUMP TAIZHOU CO LTD
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Patent Information

Application Number
CN202521673744.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-07
Publication Date
2026-07-07
Estimated Expiration
2035-08-07

AI Technical Summary

Technical Problem

The existing deep well pump thrust bearing seat has insufficient swing flexibility, resulting in uneven contact. This can easily lead to dry friction and heat accumulation in local areas, affecting the long-term reliability and service life of the bearing.

Method used

The thrust bearing adopts a cross-shaped thrust bearing structure. The thrust bearing seat and the thrust bearing are connected to the support pin through a ball joint structure to achieve bidirectional swing of the X and Y axes, adaptively compensate for machining errors, and ensure that the thrust bearing and the plane bearing are fully in contact to form a stable water film.

Benefits of technology

By employing a bidirectional oscillating adaptive mechanism, contact pressure is evenly distributed, avoiding localized dry friction, thereby improving the bearing's operational stability and lifespan, and reducing production costs.

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Abstract

The utility model relates to the technical field of deep-well pump thrust bearings, in particular to a cross thrust bearing structure of a deep-well pump, which comprises a supporting seat and at least two supporting pins symmetrically fixed at the top of the supporting seat, and ball head structures are arranged at the top ends of the supporting pins. The bottom face of the thrust pad seat is provided with a ball blind hole corresponding to the supporting pin in position, and the spherical face of the inner wall of the ball blind hole is matched with the ball structure, so that the thrust pad seat can swing around the X axis with the supporting pin as the fulcrum. The thrust pad is embedded into the square groove in the top of the thrust pad seat through the square boss at the bottom, the ball head face on the top of the boss protrudes so that the thrust pad can swing around the Y axis relative to the thrust pad seat, and the thrust pad and the plane bearing form a friction pair. The structure solves the problem of non-uniform contact between a thrust pad and a plane bearing caused by limited swing of a traditional cambered surface supporting thrust pad seat through a cross two-degree-of-freedom swing mechanism, ensures stable formation of a lubricating water film, effectively avoids ablation of the thrust pad during high-speed operation, and remarkably prolongs the service life of a deep-well pump bearing and improves the operation reliability of the deep-well pump bearing.
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