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Hydrodynamic bearing intended to support a cylinder driven in rotation about its axis

A technology of fluid dynamic bearings and axis rotation, which is applied in the direction of rotating bearings, shafts and bearings, sliding contact bearings, etc. It can solve the problems of damaged bearing bushes and the reduction of liquid film thickness, etc., to reduce excessive pressure, risk reduction effect

Active Publication Date: 2012-11-28
菲弗斯有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When the cylinder is supported by a single bearing, the cylinder deforms elastically above said bearing, this elastic deformation causes a local reduction in the thickness of the liquid film, which local reduction manifests itself in the application of excessive pressure on this same location on, may damage bearing pads

Method used

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  • Hydrodynamic bearing intended to support a cylinder driven in rotation about its axis
  • Hydrodynamic bearing intended to support a cylinder driven in rotation about its axis
  • Hydrodynamic bearing intended to support a cylinder driven in rotation about its axis

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Embodiment Construction

[0039] The invention relates firstly to a hydrodynamic bearing 1 for supporting a cylinder 2 driven in a rotational movement about its axis.

[0040] The diameter of the cylinder is greater than or equal to one meter. The cylinder is hollow and possibly radially deformable.

[0041] The bearing mainly consists of a bearing pad 3 and a bearing pad support member, wherein the bearing pad is especially made of a metal with low hardness (for example: bronze, babbitt alloy or other anti-friction metal), and the bearing pad support member is especially Made of a metal (eg steel) that is harder than the bearing pad.

[0042] The bearing pad 3 , in particular of constant thickness, extends along a part of the cylinder with axis δ and has a guide surface 31 intended to match the outer surface of the cylinder by means of a lubricating film.

[0043] This guide surface 31 has a radius of curvature corresponding to that of the cylinder 2 (greater than or equal to 0.5 m).

[0044] The b...

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Abstract

The invention relates to a hydrodynamic bearing (1) intended to support a hollow cylinder (2) that may be deformable in the radial direction, driven in a rotational movement about its axis, said diameter being greater than or equal to one metre, said bearing (1) essentially consisting of a bushing (3) and a bushing support (4), and in which said bushing (3), notably of constant thickness, extends over a portion of cylinder of axis d, having a guide surface (31), intended to follow the exterior surface of said cylinder (2) via a film of lubricant, and a surface (32) secured to said bushing support (4). According to the invention, the bushing support (4) has, if appropriate locally, at least in the region of an intermediate zone of said bearing (1), cross-section-reducing means (5; 6; 7; 8) allowing elastic deformation of said bearing in such a way as to limit the maximum value of the guide forces over said bushing (3). The invention will find a specific application in the support and guidance of a rotary hollow cylinder subjected to forces F that are unevenly distributed, such as that of a grinder for example. The invention will also relate to a grinder of the type having a hollow cylinder (2) the internal wall of which forms a circular track (21), means for pressing a roller (22) against the circular surface with a given force and comprising a hydrodynamic bearing (1) according to the invention for supporting and guiding the hollow cylinder in its rotation.

Description

technical field [0001] The present invention relates to a hydrodynamic bearing for supporting a cylinder driven in rotational motion about its axis. [0002] The invention will find particular application in supporting and guiding rotating hollow cylinders, in particular hollow cylinders such as crushers, which are subjected to unevenly distributed forces. [0003] The invention also relates to a crusher equipped with a hydrodynamic bearing according to the invention. Background technique [0004] For the fine crushing of materials such as raw materials or clinker or certain ores for the manufacture of cement, a crusher is known which consists of a hollow cylinder driven in a movement of rotation about its axis , the inner wall of the hollow cylinder constitutes a circular track. The material is laid down in layers on an endless track and crushed by means of one or more rollers inside a hollow cylinder with an axis parallel to the hollow cylinder and which, as the cylinder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/12B02C15/06
CPCF16C13/04F16C27/02F16C17/02
Inventor E.罗梅罗
Owner 菲弗斯有限公司
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