Textured roller bit sliding bearing and test method of unit tribological property of texture roller bit sliding bearing

A technology of roller cone bits and sliding bearings, which is used in mechanical bearing testing, bearing components, shafts and bearings, etc., can solve the problems of small structure size, adhesive wear, poor lubrication conditions, etc., to achieve good bearing capacity and lubrication performance, improve Good lubrication and comprehensive mechanical properties

Active Publication Date: 2013-12-18
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0003] At present, due to the special structure of the three-cone bit, that is, the small size of the bit, the large load, and the high ambient temperature, it is difficult to improve its life on the original basis, mainly reflected in the large load of the sliding bearing of the three-cone bit. , high ambient temperature, po

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  • Textured roller bit sliding bearing and test method of unit tribological property of texture roller bit sliding bearing
  • Textured roller bit sliding bearing and test method of unit tribological property of texture roller bit sliding bearing
  • Textured roller bit sliding bearing and test method of unit tribological property of texture roller bit sliding bearing

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[0043] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0044] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features that are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0045] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 6 As shown, the textured roller cone bit sliding bearing of the present invention includes a journal 1 and a bearing 2 supporting the journal, and a lubricating medium is provided between the journal 1 and the bearing 2, wherein the journal 1 adopts 20CrNiMo material, the bearing 2 is made of beryllium bronze material, and a surface texture 3 is provided on the inner surface of the bearing 2,...

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Abstract

The invention discloses a textured roller bit sliding bearing and a test method of the unit tribological property of the texture roller bit sliding bearing. According to the textured roller bit sliding bearing disclosed by the invention, a lubricating medium is arranged between a shaft neck and a bearing, wherein the shaft neck is made of a 20 CrNiMo material; the bearing is made of a beryllium bronze material; a surface texture is arranged on the inner surface of the bearing; the surface texture comprises a plurality of cylindrical pits or elliptically cylindrical pits in uniform distribution or cross distribution along the peripheral direction of the bearing. Aiming at the working condition and special structure of the roller bit sliding bearing disclosed by the invention, the adhesive failure problem of the traditional drill bearing is solved by providing the sliding bearing combined with cylindrical or elliptically cylindrical texture parameters through microscopic structure optimization, thus the service life of a roller bit is prolonged.

Description

technical field [0001] The invention relates to the field of downhole tool tribology, in particular to a sliding bearing with surface texture and a method for testing tribological performance. Background technique [0002] The life of the roller cone bit has always been one of the important issues that need to be considered in drilling engineering. With the increase of drilling depth and the complexity of the drilling environment, the requirements for the life and stability of the roller cone bit are getting higher and higher. Bit bearings are one of the keys that affect their overall life. Lubrication analysis and optimization design for the roller cone bit bearing system to improve the service life of the roller cone bit bearing is an urgent problem to be solved at present. [0003] At present, due to the special structure of the three-cone bit, that is, the small size of the bit, the large load, and the high ambient temperature, it is difficult to improve its life on the...

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Application Information

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IPC IPC(8): F16C33/10G01M13/04
Inventor 王国荣钟林何霞杨昌海邓猛蒋龙
Owner SOUTHWEST PETROLEUM UNIV
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