Dynamic radial load measurement mechanism for bearing support

Abstract

The invention relates to a dynamic radial load measurement mechanism for a bearing support, which comprises a mounting base, a support sleeve, a force measurement frame and an end cover, wherein the first side of the support sleeve is mounted on the mounting base; the force measurement frame is mounted on the support sleeve; the force measurement frame comprises a force bearing inner ring, multiple radial supporting parts, and multiple force sensors; the force bearing inner ring is mounted at the inner circle of the support sleeve; the inner circle of the force bearing inner ring is used for mounting a bearing and a rotor; the outer circle of the force bearing inner ring is provided with multiple mounting grooves; each force sensor is mounted in the corresponding mounting groove respectively; one end of each radial supporting part abuts against each corresponding force sensor, and the other end is contacted with the support sleeve to enable the support sleeve to limit the radial position; and the end cover is arranged at the second side opposite to the first side of the support sleeve. Measurement can be executed in a condition of not changing the stiffness of the original support system.

Description

technical field [0001] The invention relates to a measuring device, in particular to a dynamic radial load measuring mechanism supported by a bearing. Background technique [0002] The rotor of the rotating machine is supported on the bearing support through the bearing, so as to realize the static-dynamic support of the static part to the dynamic rotating part. The rotating rotor will generate dynamic or transient loads on the bearings and bearing supports. These loads are the key factors that determine the life of the bearings and are also an important basis for the rational design of the support system. The high-speed rotating rotor-support system is a high-frequency dynamic-static support system. The dynamic load applied by the rotor to the support system has rich dynamic characteristics; in addition, when the rotor is subjected to transient excitation, this dynamic load has strong transient characteristics. The transient unbalanced impact load caused by the shedding o...

AI Technical Summary

Problems solved by technology

The main problem of this method is: the curved beam will change the supporting stiffness of the original system, and the bearing or bearing support structure usually needs to be modified to set the curved beam, and the curved beam must be redesigned for bearings with different structural sizes, which affects the measurement accuracy There are many factors, and the requirements for design, processing, and assembly are high. In addition, the measurement accuracy is greatly affected by the calibration accuracy of the curved beam strain, and the calibration process is relatively complicated.

This method will not change the original support stiffness and is easier to implement, but the main disadvantage is that the inertia of the bearing housing and other support structures is introduced, the measurement error is large, and it cannot directly reflect the dynamic load of the rotor

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