A high-temperature-resistant transmission bearing assembly and a robot

By introducing a self-lubricating composite liner, a two-stage thermal compensation mechanism, and an axial correction device into the high-temperature bearing, the problems of tapered sleeve wear and preload loss under high-temperature conditions were solved, thereby achieving bearing stability and extended life.

CN122447474APending Publication Date: 2026-07-24SHANDONG GUOXING SMARTECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG GUOXING SMARTECH CO LTD
Filing Date
2026-06-11
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing high-temperature bearings suffer from uncontrolled preload due to thermal expansion and clearance changes under high-temperature conditions, leading to increased vibration, decreased transmission accuracy, and premature failure. Furthermore, wear on the tapered sleeve's inclined surface and eccentric bending moment accelerate wear, resulting in a high risk of cold-state lockup.

Method used

It adopts silicon nitride bearings, self-lubricating composite liner, two-stage thermal compensation mechanism and axial correction device, including floating thrust ring and cantilever leaf spring. The self-lubricating composite liner reduces friction, the two-stage elastic support element adjusts the preload, the floating thrust ring corrects eccentricity, and the cantilever leaf spring eliminates the risk of cold lock-up.

Benefits of technology

Ensure uniform contact between the tapered sleeve and the bearing housing to prevent wear, stabilize thermal expansion compensation, avoid cold lock-up, extend bearing life, and improve transmission accuracy and reliability.

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Abstract

The application discloses a high-temperature-resistant transmission bearing assembly and a robot, and relates to the technical field of bearing high-temperature resistance.The high-temperature-resistant transmission bearing assembly comprises a silicon nitride bearing, a high-temperature shaft, a low-temperature shaft, a cone sleeve, a bearing seat and an end cover, a self-lubricating composite lining layer is arranged on the outer conical surface of the cone sleeve, a heat insulation layer is arranged between the high-temperature shaft and the low-temperature shaft, two-stage elastic supporting elements are arranged in parallel in the end cover, and an axial deviation rectifying device with a floating thrust ring is arranged.The bearing assembly has good high-temperature resistance, effectively realizes high-temperature and low-temperature zone heat insulation, protects the low-temperature side bearing, still has long-term compensation capacity in places such as fire scenes where temperature changes frequently, can avoid thrust eccentricity, makes the cone sleeve bear pressure uniformly, thereby ensuring that the bearing is pressed uniformly, effectively solves the problem of over-compensation of extreme temperature difference, and prevents the bearing from being damaged due to overload.
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