Sliding bearing device

A sliding bearing and bearing technology, which is applied to sliding contact bearings, bearings, bearings in rotary motion, etc., can solve the problems of not finding friction and wear resistance of sliding bearing devices, low slurry wear resistance, and inability to expect long life, etc. Shortened running-in time, improved slurry abrasion resistance, and high foreign matter removal effect

Active Publication Date: 2016-08-17
EBARA CORP
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Problems solved by technology

[0004] However, when the material itself, which is formed by winding long carbon fibers in a coil shape with respect to the shaft core, cuts the fibers due to foreign matter, the fibers fall off, so the slurry abrasion resistance is very low.
Therefore, there is a problem that long life cannot be expected even if grooves are provided on the sliding surface
[0005] In addition, in Patent Document 1, in order to avoid an increase in temperature due to frictional heat of the sliding part during operation under dry conditions, it is discussed focusing on improving the cooling effect of the sliding bearing device. Discussion on the point of view of improving the friction and wear resistance of sliding bearing devices during operation under normal conditions

Method used

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Embodiment Construction

[0047] Refer to the following Figure 1 to Figure 10 Embodiments of the sliding bearing device of the present invention will be described. exist Figure 1 to Figure 10 In , the same reference numerals are assigned to the same or corresponding components, and repeated descriptions are omitted.

[0048] figure 1 It is a perspective view showing the sliding bearing device of the present invention. like figure 1 As shown, the sliding bearing device 1 is composed of a resin material that does not contain carbon fibers, or a composite material that contains a plurality of carbon fibers whose length is shorter than the circumference of the bearing sliding surface in a resin material that does not contain carbon fibers, and is formed into a cylindrical shape. . Here, the carbon fibers need only be shorter than the circumference of the bearing sliding surface. If a specific numerical value is described, the length of the carbon fibers is preferably 10 μm to 10 mm. The carbon fibe...

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Abstract

The present invention pertains to a sliding bearing device which can be suitably used as a radial bearing in a rotating machine such as a pump. In this sliding bearing used in a rotating machine, the bearing portion comprises a resin material that does not contain carbon fibers, or comprises a composite material wherein several carbon fibers having a length shorter than the circumferential length of the bearing sliding surface (BS) are included with a resin material which does not contain carbon fibers. Multiple grooves (1g) are provided in the bearing sliding surface (BS) so as to pass through the bearing sliding surface in the axial direction, and the multiple grooves (1g) are formed such that the percentage of the total surface area occupied by the grooves (1g) (the percentage surface area of the grooves) with respect to the entire sliding surface area of the bearing sliding surface (BS) is 15-50%, and the distance between adjacent grooves is 10-60 mm.

Description

technical field [0001] The present invention relates to a sliding bearing device using a resin material, and more particularly to a sliding bearing device suitable for use as a radial bearing of a rotary machine such as a pump. Background technique [0002] Sliding bearing devices using resin materials are widely used in rotating machines such as turbines and working machines due to the excellent lubricating properties of resins. When a sliding bearing device made of a resin material is used in a pump or the like for treating water mixed with foreign matter such as sand, the water mixed with foreign matter may intrude into the sliding surface of the bearing. Compared with the resin material, the hardness is high, so the resin material will be abraded. Therefore, excellent wear resistance is required for a sliding bearing device using a resin material. In addition, in vertical pumps and the like, not all bearing sliding surfaces of the sliding bearing device operate in wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/20F16C17/02F16C17/14
CPCF16C17/02F16C17/14F16C33/1065F16C33/201
Inventor 杉山宪一高桥则雄八锹浩山中隆司
Owner EBARA CORP
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