Self-aligning bearing support

Abstract

A self-aligning bearing support device 10 supports an intermediate bearing 7 which rotatably supports the intermediate portion of an intermediate shaft 6. The intermediate bearing 7 extends horizontally with the front and rear ends thereof being rotatably supported. The self-aligning bearing support device 10 has a total spring constant k with respect to the displacement x of the intermediate bearing 7 from the installation height. The total spring constant k is set so that the supporting force F of the intermediate bearing 7 falls within a preset load range RF in a preset height range RH. The self-aligning bearing support device 10 also has a displacement speed restriction device 30 which restricts the speed of displacement of the intermediate bearing 7 from the installation height. The displacement speed restriction device 30 has a displacement fixing device (remote control valve 39) which fixes the displacement x of the intermediate bearing 7.

Description

technical field [0001] The present invention relates to a self-aligning type bearing support device for adjusting the height position of a bearing to an appropriate position. Background technique [0002] Patent Documents 1 and 2 are proposed as an alignment adjustment device for adjusting the height position of the bearing to an appropriate position. [0003] In the "automatic adjustment device for bearing alignment" of Patent Document 1, a set value signal generator for generating a set value signal of the center position of the bearing, a state quantity measuring device for measuring changes in state quantities, an arithmetic device for calculating deviation values, A bearing position adjustment device that adjusts the center position of the bearing according to the deviation value. [0004] The "alignment adjustment device" of Patent Document 2 consists of a parameter monitor for detecting the state of the shaft, a calculator for calculating the control amount based on ...

AI Technical Summary

Problems solved by technology

However, under actual usage conditions (such as hot conditions), the height of each bearing is displaced due to temperature changes or external forces (such as draft changes), which may greatly deviate from the planned load balance.

[0008] If the bearing load becomes too large, the surface pressure of the metal increases, and thermal adhesion damage may occur. In addition, if the bearing load becomes too small, the shaft restraint force decreases, and the metal part of the bearing due to movement occurs. Fretting wear and peeling of bearing metal may occur

[0009] When the displacement of each bearing height is large, there is the above-mentioned risk, which becomes the cause of the problem of the shaft system

[0010] In addition, in the above-mentioned proposals of Patent Documents 1 and 2, the control device (calculation device, computing unit, etc.) is indispensable, and there is a possibility that the function may be lost due to power failure or noise.

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