Damping force-controllable dry friction damping bearing

A damping bearing and dry friction technology, applied in the direction of rotating bearings, bearings, bearing components, etc., can solve the problems of non-linear increase of oil film, unbalanced rotor system, poor stability, etc., and achieve vibration energy consumption, flexible steering, and bearing The effect of small external force

Inactive Publication Date: 2017-11-10
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the extrusion oil film damping bearing in the above literature has a significant damping effect, if the design and manufacturing accuracy is not good or the rotor system unbalance deteriorates, the nonlinearity of the oil film will increase greatly, resulting in many harmful nonl

Method used

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  • Damping force-controllable dry friction damping bearing
  • Damping force-controllable dry friction damping bearing
  • Damping force-controllable dry friction damping bearing

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Embodiment Construction

[0019] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0020] A dry friction damping bearing with controllable damping force, comprising: a bearing body and a bearing base 11, such as figure 1 shown. The bearing body includes: bearing cover 1, universal sliding bearing 2, and sliding assembly; the sliding assembly includes sliding head 3, piezoelectric ceramic assembly 4, force sensor 5, backing plate 6, preloading bolt 7 and side end cover 8, such as figure 2 shown.

[0021] The bearing body has two identical bearing caps 1 that match each other; the inside of the bearing cap 1 is hollow, and the hollow inner surface is an inner spherical surface; the hollow part of the bearing cap 1 is installed with a universal sliding bearing 2, and the outer The surface matches the hollow inner surface; the universal sliding bearing 2 has an inner shaft hole, and the inner shaft hole is embedded with a sliding bearing bush; ...

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Abstract

The invention provides a damping force-controllable dry friction damping bearing. The bearing comprises a bearing body and a bearing pedestal, wherein the bearing body comprises bearing covers, a universal sliding bearing and a sliding assembly, and the sliding assembly comprises a sliding head, a piezoelectric ceramic component, a force sensor, a backing plate, a prepressing bolt and a side-face end cover; the bearing body is provided with two same bearing covers which are matched with each other, the interior of each bearing cover is hollow, and the inner surface of each hollow part is an inner spherical surface; the universal sliding bearing is installed at the hollow parts of the bearing covers, and the other surface of the universal sliding bearing is matched with the inner surfaces of the hollow parts; the universal sliding bearing is provided with an internal shaft hole, a sliding bearing bushing is inlaid in the internal shaft hole, and a rotating shaft is arranged in the sliding bearing bushing; and a rectangular groove is formed in the inner wall of each bearing cover, and the sliding assembly is installed in the rectangular grooves. According to the damping force-controllable dry friction damping bearing, restraint of the bearing on the deflection tendency of the rotating shaft is released, steering is flexible, external transfer force of the bearing is small, controllable friction damping force can be generated, accuracy control over deflection of the rotating shaft can be achieved, vibration energy is consumed, and low-speed stability of a system is further improved.

Description

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Claims

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Application Information

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Owner HARBIN ENG UNIV
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