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Spherical-groove knuckle bearing

A technology of joint bearing and bearing inner ring, applied in the field of joint bearing, can solve the problems of easy plastic deformation of the gasket, increase of friction torque and friction factor, and wear, etc., to achieve the effect of high bearing capacity and enhanced dynamic pressure lubrication effect.

Inactive Publication Date: 2016-10-12
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 knuckle bearing
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  • Spherical-groove knuckle bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 2 As shown, in this case, an oblique linear spiral groove 9 is used.

[0036] In this case, b=0.5, h=3.6, δ=70°, and the number of grooves is 9. The outer spherical surface of the inner ring is located inside the inner spherical surface of the outer ring, and can rotate and swing at any angle along the inner spherical surface of the outer ring. At the same time, under the action of the spiral groove of the outer spherical surface of the inner ring, the lubricant is left in the bearing gap by the spiral groove, which enhances 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 variation trend of the depth of the oblique linear spiral groove on the outer spherical surface of the inner ring of the bearing is different. In the same direction, the groove depth of a group of...

Embodiment 2

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

[0042] In this case, b=0.5, h=3.0, δ=70°, and the number of grooves is 9. The outer spherical surface of the inner ring is located inside the inner spherical surface of the outer ring, and can rotate and swing at any angle along the inner spherical surface of the outer ring. At the same time, under the action of the spiral groove of the outer spherical surface of the inner ring, the lubricant is left in the bearing gap by the spiral groove, which enhances 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 variation trend of the logarithmic helical groove depth on the outer spherical surface of the inner ring of the bearing is different. In the same direction, the groove depth of a group of loga...

Embodiment 3

[0047] like Figure 4 As shown, in this case, a circular arc groove 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 rotate and swing at any angle along the inner spherical surface of the outer ring. At the same time, under the action of the spiral groove of the outer spherical surface of the inner ring, the lubricant is left in the bearing gap by the spiral groove, which enhances 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 variation trend of the arc groove depth on the outer spherical surface of the inner ring of the bearing is different. In the same direction, the groove depth of a group of arc grooves changes from shallow to deep, a...

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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 its 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, in the process of actual use, there are also some problems. [0003] For ordinary joint bearings, due to their own structural characteristics, the lubricant in the bearing gap is easy to lose, which affects the lubrication effect. [0004] For self-lubricating spherical plain bearings with composite material liners, the components in the liner act as solid lubricants. The lining is made of weaving, and the manufacturing cost is high, and the lining is easy to be plastically deformed or microscopically fractured under impact load, resulting in increased friction torque and friction ...

Claims

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Application Information

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Patent Type & Authority Applications(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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