An on-line detection method for iron filings content in slewing bearing grease and its on-line grease detection device

Abstract

The invention discloses an online detection method for scrap iron content in pivoting support lubricating grease and a lubricating grease online detection device. Automatic sampling of solid lubricating grease is achieved by using a lubricating grease online detection device in the online detection method. The scrap iron content in the lubricating grease is determined by using an inductance value change of a detection coil caused by scrap iron mill grains in the lubricating grease, so as to effectively judge the abrasion degree inside a pivoting support raceway; a real-time detection value is compared with a preset pre-warning value to judge whether the lubricating grease loses efficacy, so as to provide reference for optimization of the lubricating condition of the raceway. By adopting the online detection method, the online sampling difficulty due to the fact that the solid lubricating grease cannot flow is radically solved, online detection is achieved, the problems of long analysis period, complicated detection process and the like in off-line detection are avoided, and the online detection method has important significance on evaluation of the pivoting support operation state, improvement of the lubricating condition, effective prolonging of the service life of the pivoting support, and improvement of the operation reliability. The method is simple, easy to achieve, and high in automatic degree.

Description

technical field [0001] The invention relates to the field of on-line detection of lubricating grease for slewing bearings, in particular to an on-line detection method for iron filings content in lubricating grease for slewing bearings and an on-line detection device for lubricating grease. Background technique [0002] The slewing ring is an important transmission part necessary for the machinery that needs to perform relative rotary motion between two objects, and needs to bear the axial, radial load and overturning moment at the same time, low speed and heavy load, and the working environment is extremely harsh. It is widely used in marine equipment , wind turbines, offshore platforms, cranes and industrial machinery, etc., are called "the joints of the machine", but once the lubrication is insufficient, the whole machine will fail, or even a major failure will occur, resulting in difficult maintenance, long cycle and high cost And the economic loss caused by long downtim...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic research on lubricating grease detection technology mainly focuses on spectral analysis, ferrographic analysis, particle counting and other methods, and all of them belong to off-line detection. Although off-line detection has high precision and accurate results, it has slow response speed and long analysis cycle. , Strict sampling requirements and complicated detection process, etc., usually only suitable for laboratory analysis, and cannot be monitored in real time

With the development of modern mechanical equipment in the direction of large-scale, high-speed, and automation, offline detection is far from meeting the needs of long-term work of equipment, so online detection has gradually become an important development trend of current equipment lubrication and wear detection, while the existing lubrication The online detection of grease basically stays in the theoretical and laboratory research stage, and a few detection technologies still cannot get rid of the offline analysis method, which leads to certain restrictions on the real-time detection. Therefore, the online detection of grease has become a research field that needs to be actively developed.

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