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Spherical groove joint bearing

A technology for spherical plain bearings and inner rings of bearings, applied in the field of spherical plain bearings, can solve the problems of easy plastic deformation, wear and high manufacturing costs of liners, and achieve the effects of enhanced dynamic pressure lubrication effect and high bearing capacity

Inactive Publication Date: 2018-05-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lining is made of weaving, the manufacturing cost is high, and the lining is easy to be plastically deformed or microscopically broken under the impact load, resulting in increased friction torque and friction coefficient, severe wear and reduced service life

Method used

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  • Spherical groove joint bearing
  • Spherical groove joint bearing
  • Spherical groove joint bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 2 As shown, an oblique straight spiral groove 9 is used in this case.

[0036] In this case, b=0.5, h=3.6, δ=70°, and the number of slots is 9. The outer spherical surface of the inner ring is located inside the inner spherical surface of the outer ring, and can swing at any angle along the inner spherical surface of the outer ring. At the same time, under the action of the spiral groove on the outer spherical surface of the inner ring, the lubricant is retained in the bearing gap by the spiral groove to enhance the effect of dynamic pressure lubrication. And the radial bearing capacity of the bearing can be adjusted by changing the groove width ratio, groove depth ratio, helix angle and lubricating film thickness of the spiral groove.

[0037] The changing trend of the oblique straight spiral groove depth on the outer spherical surface of the bearing inner ring is different. In the same direction, the groove depth of a group of oblique linear spiral groove...

Embodiment 2

[0041] Such as image 3 As shown, in this case, a logarithmic spiral spiral groove 10 is used.

[0042] In this case, b=0.5, h=3.0, δ=70°, and the number of slots is 9. The outer spherical surface of the inner ring is located inside the inner spherical surface of the outer ring, and can swing at any angle along the inner spherical surface of the outer ring. At the same time, under the action of the spiral groove on the outer spherical surface of the inner ring, the lubricant is retained in the bearing gap by the spiral groove to enhance the effect of dynamic pressure lubrication. And the radial bearing capacity of the bearing can be adjusted by changing the groove width ratio, groove depth ratio, helix angle and lubricating film thickness of the spiral groove.

[0043] The changing trend of the depth of the logarithmic spiral spiral groove on the outer spherical surface of the bearing inner ring is different. In the same direction, the groove depth of a group of logarithmic spira...

Embodiment 3

[0047] Such as Figure 4 As shown, in this case, a circular arc slot 11 is used.

[0048] In this case, b=0.5, h=3.6, and the number of slots is 9. The outer spherical surface of the inner ring is located inside the inner spherical surface of the outer ring, and can swing at any angle along the inner spherical surface of the outer ring. At the same time, under the action of the spiral groove on the outer spherical surface of the inner ring, the lubricant is retained in the bearing gap by the spiral groove to enhance the effect of dynamic pressure lubrication. And the radial bearing capacity of the bearing can be adjusted by changing the groove width ratio, groove depth ratio, helix angle and lubricating film thickness of the spiral groove.

[0049] The changing trend of the arc groove depth on the outer spherical surface of the bearing inner ring is different. In the same direction, the groove depth of a group of circular arc grooves is changed from shallow to deep, and the groov...

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Abstract

The invention discloses a spherical-groove knuckle bearing. Bearing inner rings are mainly formed by spherical bases with through holes and spiral grooves or circular arc line grooves distributed on the surfaces of the spherical bases; the spiral grooves or the circular arc line grooves are formed on spherical outside surfaces of the bearing inner rings; groove depths in the spiral grooves or the circular arc line grooves are gradually changed; the groove depth change trends of the grooves at different channels are different; according to any two adjacent grooves along the same direction, the groove depth of one groove is deep from shallow, and the groove depth of the other groove is shallow from deep. According to the spherical-groove knuckle bearing provided by the invention, a dynamic pressure lubrication effect can be enhanced, a lubricating film is thicker, the bi-directional axial load can be borne at the same time, the bearing capacity is higher, and lubricating films among mating faces in the bearing flow, so that a lubricating effect of all lubricating greases is fully achieved.

Description

Technical field [0001] The invention relates to a joint bearing, in particular to a spherical groove joint bearing. Background technique [0002] Due to the advantages of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, and good lubrication, joint bearings are currently widely used in engineering practices such as aircraft and tanks. At the same time, there are also some problems in actual use. [0003] For ordinary joint bearings, due to their own structural characteristics, the lubricant in the bearing gap is easily lost, which affects the lubrication effect. [0004] For self-lubricating joint bearings with composite gaskets, the components in the gasket play a solid lubrication role. The liner is manufactured by weaving, and the manufacturing cost is high, and the liner is easily plastically deformed or microscopically fractured under impact load, resulting in increased friction torque and friction factor, severe wear and reduced ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C23/02F16C33/02
CPCF16C23/02F16C33/02
Inventor 张勇强陈李果汪久根
Owner ZHEJIANG UNIV
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