Intelligent bearing internally provided with wireless sensor and having self-powered function

Abstract

The invention provides an intelligent bearing internally provided with a wireless sensor and having a self-powered function. The intelligent bearing is provided with a sensor assembly, an antenna, a coil assembly and a magnet; an annular inner groove is formed in the inner surface of an outer ring, the sensor assembly, the antenna and the coil are arranged in the inner groove, an annular outer groove is formed in the outer surface of an inner ring, the magnet is arranged in the outer groove in a connected mode, the magnet rotates at a high speed along with the inner ring and generates magneticline cutting motion relative to the coil assembly, the inductive electric potential is generated in the coil assembly, and the coil assembly is connected with the sensor assembly and provides electric energy for the sensor assembly; the sensor assembly is used for collecting operation parameter information of the bearing and converting the collected information into data; and the sensor assemblyis connected with the antenna, the antenna is used for sending the data, and thus real-time monitoring of the bearing is achieved. The intelligent bearing does not need to be supplied with an externalpower supply, and real-time state monitoring of the bearing in the operation process is achieved through wireless transmission signals of a multi-parameter sensor.

Description

technical field [0001] The invention relates to an intelligent bearing, in particular to an intelligent bearing with a built-in wireless sensor and self-power supply function. Background technique [0002] Modern industry is gradually developing in the direction of specialization and refinement, and the market share of various high-end large-scale mechanical equipment is also increasing, which requires a commensurate maintenance strategy. In these large-scale equipment, the bearing becomes the most important core component and the "heart" of the equipment motion system. These large bearings are expensive to manufacture, and once damaged, the equipment will stop working, and even cause economic losses of millions or tens of millions. According to information, the failure rate of equipment caused by bearing damage is about 40% in the field of high-speed trains, about 40% in the field of large wind turbines, about 35% in the field of aero-engines, about 30% in the field of hea...

AI Technical Summary

Problems solved by technology

[0005] However, the development of existing smart bearings at home and abroad has just started, and there are still many problems and defects.

There are two main defects: First, the so-called smart bearings are often unable to supply energy by themselves, and can only realize functions through external power supply, while wired power supply needs to drag cables, which cannot meet the needs of bearings to tell the rotation, and wireless power supply requires external power supply. The power supply coil is installed, the transmission efficiency is low and the transmission distance is limited, which cannot meet the requirements of field use

The second is that the various data collected by the built-in sensors of the existing smart bearings are all transmitted through cables, which has brought great limitations to practical use and cannot be realized in most workplaces.

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