滚动轴承内圈温度无线监测技术

温度是反映滚动轴承运行状态的重要指标之一，高速运行中轴承旋转套圈的温度远高于静止套圈温度，实现轴承旋转套圈（通常为内圈）的实时温升监测对保证运行安全尤为重要。基于电气和机械设计技术的协同，提出一种滚动轴承内圈温度无线监测方案，将测试系统嵌入轴承锁紧螺母中，利用锁紧螺母与轴承接触配合实现对轴承内圈温度采集。设计研究集成温度测试、无线数据传输及无线电能供给电路。重点实现电能无线供给以满足轴承旋转套圈温度持续监测的电能需求。最后通过对32008圆锥滚子轴承温度采集，验证该方案的可行性。该方法在保障轴承完整性的条件下能实现轴承旋转套圈温度的监测，为轴承状态监测和热特性试验研究提供了新的技术手段，解决了实际工况下轴承旋转套圈测温难题。

Wireless Monitoring Technology of Rolling Bearing Inner Ring Temperature

Temperature is one of the most important indicators to reflect the operating state of rolling bearings. The temperature of the rotating ring is much higher than the static ring in high speed operation. It is very important to realize the real-time temperature rise monitoring of the rotating bearing ring (usually inner ring) for ensuring the safety of the running. Based on the coordination of electrical and mechanical design technology, a wireless monitoring scheme for the temperature of inner ring of rolling bearing is proposed. The test system is embedded in the bearing lock nut, and the temperature of the bearing inner ring is collected by the contact of the locking nut and the bearing. The integrated temperature test, wireless data transmission and radio energy supply circuit are designed and studied in this paper. The wireless power supply is mainly realized to meet the continuous monitoring of the bearing rotary bearing's power demand. Finally, the feasibility of the scheme is verified by temperature acquisition experiment of 32008 tapered roller bearings. Under the condition of ensuring the integrity of bearing, the temperature monitoring of bearing rotating ring is realized. A new technical means for bearing state monitoring and thermal characteristic experiment research is provided, and the problem of temperature measurement of bearing rotating ring under the actual working condition is solved.