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Friction-minimized plain bearing arrangement

A sliding bearing and inner bearing technology, applied in sliding contact bearings, rotating bearings, bearings, etc., can solve problems such as fatigue resistance, and achieve the effect of reducing stress concentration areas

Inactive Publication Date: 2019-06-21
THYSSENKRUPP METALURGICA CAMPO LIMPO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the achievable friction reduction is limited to a few percent and the coating is generally not fatigue resistant over the long life of the crank drive

Method used

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  • Friction-minimized plain bearing arrangement
  • Friction-minimized plain bearing arrangement
  • Friction-minimized plain bearing arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 An embodiment of a plain bearing arrangement 1 for supporting a shaft 10 in a bearing element 11 is shown, comprising an inner bearing part 12 with a sliding surface 13 and an outer bearing part 14 with a sliding surface 15 . The plain bearing arrangement 1 is embodied as a bearing arrangement in a crank drive, the shaft 10 forming the crankshaft 21 and thus the inner bearing part 12 forming the journal 23 of the crankshaft 21 and the outer bearing part 14 forming the crankshaft 21 for the piston 29 Connecting rod 24.

[0037] The journal 23 for connecting the crankshaft 21 to the connecting rod 24 is followed by a journal 22 , which is not shown in detail, provided for mounting the crankshaft 21 in the crankcase.

[0038] When the shaft 10 rotates along the axis of rotation 16, the sliding surface 13 of the inner bearing part 12 performs a sliding movement relative to the sliding surface 15 of the outer bearing part 14, the sliding surface 15 of the outer bea...

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PUM

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Abstract

The invention relates to a plain bearing arrangement (1) for supporting a shaft (10) in a bearing element (11), comprising an inner bearing part (12) with a sliding surface (13) and comprising a sliding surface (15) The outer bearing part (14), when the shaft (10) rotates around the axis (16), the sliding surface (13) of the inner bearing part (12) performs a sliding movement relative to the sliding surface (15) of the outer bearing part (14) . According to the invention, at least one of the sliding surfaces (13, 15) has at least one recessed area (17) extending in the circumferential direction of the sliding surface (13, 15) over a circumferential angle (α1, α2), and at least one recessed area extends at least 50% of the axial length of the sliding surface (13, 15), and the recessed area (17) is dimensioned such that: in the recessed area (17), the inner bearing part (12) The clearance distance to the outer bearing part (14) is increased.

Description

technical field [0001] The invention relates to a sliding bearing arrangement for supporting a shaft in a bearing element, comprising an inner bearing part with a sliding surface and an outer bearing part with a sliding surface, the sliding of which occurs when the shaft rotates about an axis of rotation The surface performs a sliding movement in abutting contact with the sliding surface of the outer bearing part. Background technique [0002] FR 2 847 314 A1 teaches chamfers in the surfaces of bearing journals in crank drives in order to provide stress relief in the crankshaft of an internal combustion engine. This chamfer is implemented like a notch and is positioned adjacent to the transition from the cylindrical bearing journal to the crank arm. The positions of these chamfers are determined by computer numerical calculations based on the parameters of the engine's crankshaft and make it possible to reduce the maximum stresses in the connection area between the bearing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C9/02
CPCF16C9/02F16C9/04F16C33/1075F16C2240/30F16C17/02F16J1/16F16C2361/53F16C2240/44F16C2360/22F16C2360/18
Inventor 路易斯·安东尼奥·丰塞卡-加利艾力克斯·德-索萨-罗德里格斯迪奥戈·斯图亚尼-阿尔维斯
Owner THYSSENKRUPP METALURGICA CAMPO LIMPO