JPS5854217A - Bearing device - Google Patents

Abstract

PURPOSE:To absorb vibration energy, generated in a rotary body, and axially directional vibration force, applied from the outside, by supporting a bearing main unit through a liquid film-shear type damper mechanism and shock absorbing member. CONSTITUTION:A base 4, formed to a disc shape, is fixedly placed on a bottom wall internal surface of a case 2 through a ring 3 formed by a shock absorbing material. Then a bearing seat 8 is placed on an upper surface of the base 4 through balls 7 by providing a fine gap 9, horizontally extended between said bearing seat and the upper surface of the base 4, further in a horizontally movable state. A bearing main unit 13, connected to a lower shaft 12 of a vertical type rotary body and supported with a thrust load and radial load of the rotary body, is mounted to an upper surface of the bearing seat 8. While lubricating oil 14 is contained in the case 2 to a level the bearing main unit 13 is submerged. Further the bearing seat 8 is restrictively placed on the base 4 by centripetal force generated through a spring 10.

Description

[Detailed description of the invention] The present invention relates to a bearing device for a vertical rotating body.

As a bearing device for supporting the thrust load of a vertical rotating body, a cylindrical type bearing device has conventionally been considered. For example, in addition to the supporting function, there is also a vertical rotating body 6 which has a function of damping generated vibrations.

However, this type of bearing device has a structure that is weaker than the axial impact force (2%) due to the externally applied equilibrium force even if it falls down. There is a risk that the bearing body may be damaged due to the impact force being applied, or the rotating body may be damaged.

The present invention was made in view of the above two issues.
Its purpose is, of course, to provide load support functions,
Rotating body - 2 functions to absorb generated vibration energy,
To provide a bearing device for a vertical rotating body that can exhibit both the function of absorbing an axial vibration force applied from the outside, and can actually maintain its own maintenance, protect the rotating body, and suppress vibrations. It is in.

That is, the bearing device according to the second aspect of the present invention achieves the above object by supporting the bearing body with a liquid film shear type damper mechanism and a loose member.

The details of the present invention will be explained below with reference to the illustrated embodiments.

In the figure, reference numeral 1 is a support frame fixed to a foundation (not shown), and this support frame 1 is also fixed to a bottomed cylindrical case 2 with its opening facing upward. Bottom m inner surface 4=.

For example, a disc-shaped pace 4 is fixed to the mounting plate via a ring 3 made of a cushioning material such as rubber.

Note that the upper and lower parts of the ring 3 fit into annular grooves 5 and 6P1 formed on the bottom circular surface of the case 1 and the lower surface of the pace 4, respectively, and by this fitting, the pace 4
It regulates the horizontal movement of.

A bearing seat 8 is mounted on the upper surface of the pace 4 via the ball 1, with a minute gap 9 extending in the horizontal direction (2) between the bearing seat 8 and the upper surface of the pace 4, and is movable in the horizontal direction (2). Both ends of the bearing seat 8 and the pace 4 are (
= Connected by a fixed spring 10, this spring 10
Due to the centripetal force generated by A bearing body 13 is connected to the bearing body 12 and supports the thrust load and radial load of the rotating body. Further, lubricating oil 14 is contained in the bolt of the case 2 to a level where the bearing body 13 is submerged. Note that the upper shaft of the vertical rotating body is supported by a radial bearing.

With such a configuration, the vibration energy generated in the vertical rotating body during operation causes the lower shaft 12 to move as shown by the solid line arrow A in the figure.
When the bearing seat 8 vibrates in the direction shown by The vibration energy is absorbed before the vibration develops.The oil film shear type damper has excellent general C2 response.Therefore, a good distribution function is exhibited.Also,
Support frame 1 = External force applied in a direction orthogonal to the lower shaft 12 (2) Even if the vertical rotating body tries to vibrate, the vibration energy is absorbed by the above-mentioned principle.

- 10,000, rotation and earthquake support frame IC = lower shaft 1
When the vertical rotating body attempts to vibrate in the direction indicated by the solid line arrow B in the figure due to the application of an equilibrium force in a direction parallel to the horizontal axis 2, the vibration is quickly suppressed by the energy absorption action accompanying the deformation of the hanging ring 3.

Therefore, it is possible to prevent the vibration energy generated by the rotating body ζ2 and the vibration energy applied from the outside from being applied to the bearing main body IJ and the rotating body, and to reliably protect them.

In addition, in the above-mentioned embodiment, the ring 1 is made of rubber pad.
However, as long as it has a buffering function, for example, a ring-shaped leaf spring (= may be replaced.

As detailed above (=1) According to the present invention (=), even if a vertical rotating body attempts to vibrate, it can quickly absorb vibration energy.

We can provide a bearing assembly with the function of preventing damage to itself and the rotating body.

[Brief explanation of drawings]

The figure is a vertical sectional view of a bearing device according to an embodiment of the present invention. 2... Case, 3... Ring, 4... Pace. 8... Bearing seat, 9... Minute gap, 10... Spring. 13... Bearing body, 14... Lubricating oil.

Claims (1)

[Claims] A case in which lubricating oil is housed, a base fixed via an abutment member within this case, and a small gap extending in the horizontal direction between the top surface of this base. Horizontal direction 6: A movable bearing seat provided, this bearing seat and the base 1 = a centripetal mechanism provided to restrict the position of the bearing seat, and the bearing seat &: thrust load of the supported vertical rotating body What is claimed is: 1. A bearing device comprising: a bearing body that supports a bearing body;