The roller chain lubricated with ferrofluids

Abstract

The sleeve of roller chain periodically squeezes the pin during the process of chain transmission. The lubrication oil located in the gap of the sleeve and pin will be pushed out and cannot be restored automatically. The absence of sufficient lubricating oil can cause friction, wear, and even the roller chain failure between the pin and the sleeve. This article presents a novel method and a new type of chain structure to lubricant roller chain with ferrofluids, which is capable of prolonging the service life of roller chain. The results show that ferrofluids can be remained in the clearance between the sleeve and the pin shaft under the effect of external magnetic field. The ferrofluids that were squeezed out of the clearance can be restored automatically, which ensure the reliability of chain transmission. And the external magnetic field effectively prevents the chain lubrication leakage due to the edge effect of the magnetic field.

Keywords

Roller chain ferrofluids magnetic field lubricant

Get full access to this article

View all access options for this article.

References

Zhang

Chen

et al.

Experimental validation and numerical simulation of static pressure in multistage ferrofluid seals. IEEE Trans Magnet. Epub ahead of print 2019; 55(3): 1–8.

Zhang

Wang

. External magnetic field of journal bearing with twined solenoid. J Magnet 2017; 22: 291–298.

Burgess

Pyper

Ling

. A linear actuated chain test rig capable of accelerated test speeds and continuous wear measurements. Proc IMechE, Part C: J Mechanical Engineering Science 2013; 227: 1047–1055.

Eldiwany

Marshek

. Experimental load distributions for double pitch steel roller chains on polymer sprockets. Mech Mach Theory 1989; 24: 335–349.

Conwell

Johnson

. Experimental investigation of link tension and roller-sprocket impact in roller chain drives. Mech Mach Theory 1996; 31: 533–544.

Wang

Meng

. Study on the reliability evaluation method of the wear life of roller chains. Proc IMechE, Part C: J Mechanical Engineering Science 2006; 220: 1569–1574. .

Conwell

Johnson

. Design, construction and instrumentation of a machine to measure tension and impact forces in roller chain drives. Mech Mach Theory 1996; 31: 525–531.

Binder

BRC

. Mechanics of the roller chain drive, New Jersey: Prentice Hall, Inc, 1956. .

Fuglede

Thomsen

. Kinematic and dynamic modeling and approximate analysis of a roller chain drive. J Sound Vib 2016; 366: 447–470.

10.

Fuglede

Thomsen

. Kinematics of roller chain drives ł exact and approximate analysis. Mech Mach Theory 2016; 100: 17–32.

11.

Kidd

Loch

Reuben

. Experimental examination of bicycle chain forces. Exp Mech 1999; 39: 278–283.

12.

Sujata

Venkataswamy

Parameswara

et al.

Failure analysis of conveyor chain links. Eng Fail Anal 2006; 13: 914–924.

13.

Huang

Wang

et al.

A research on automatic detection device for the missing of the roller chain's rollers and sleeves. Adv Mater Res 2014; 898: 638–643.

14.

Yang

Zhang

Meng

et al.

A convex model approach for structure non-probabilistic reliability analysis. Proc IMechE, Part O: J Risk and Reliability 2017; 231: 508–515. .

15.

Shahnazian

Odenbach

. Rheological investigations of ferrofluids with a shear stress controlled rheometer. J Phys Condensed Matt 2008; 20: 204137.

16.

Odenbach

Mller

. On the microscopic interpretation of the coupling of the symmetric velocity gradient to the magnetization relaxation. J Magnetism Magnet Mater 2005; 289: 242–245.

17.

Osman

Nada

Safar

. Different magnetic models in the design of hydrodynamic journal bearings lubricated with non-Newtonian ferrofluid. Tribol Lett 2003; 14: 211–223.

18.

Osman

Nada

Safar

. Static and dynamic characteristics of magnetized journal bearings lubricated with ferrofluid. Tribol Int 2001; 34: 369–380.

19.

Nada

Osman

. Static performance of finite hydrodynamic journal bearings lubricated by magnetic fluids with couple stresses. Tribol Lett 2007; 27: 261–268.

20.

Osman

Nada

Safar

. Effect of using current-carrying-wire models in the design of hydrodynamic journal bearings lubricated with ferrofluid. Tribol Lett 2001; 11: 61–70.

21.

Rhodes

Elborai

et al.

Magnetic fluid behavior in uniform dc, ac, and rotating magnetic fields. J Electrostat 2006; 64: 513–519.

22.

Yoon

Lieu

. Magnetization patterns of permanent ring magnets in brushless dc motors. Electr Mach Power Syst 2005; 33: 127–144.

23.

Yoon

Lieu

. A method to verify accuracy of predicted magnetic orientation of a permanent ring magnet in a brushless dc motor. IEEE Trans Magnet 2007; 43: 3638–3644.

24.

Patel

Upadhyay

Mehta

. Viscosity measurements of a ferrofluid: comparison with various hydrodynamic equations. J Colloid Interf Sci 2003; 263: 661–664.

25.

Liu

Wen

et al.

Motion analysis on the particles in a magnetic field detector. Tribol Int 2000; 33: 837–843.