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NGHIEN cflu - TRAO D6I

CIAI PHAP SO KHAO SAT

BIEU t>6 AP SUAT 6 THUY PQNC

Digital solution for studying on hydraulic pressure of journal bearing

Trfn Van Thilc, PGS.TS. Pham Vin Hiing

Bo mon Mdy & Ma sdt hoc, Vi|n Co khi, Tru6ng D^i hoc Bach khoa Hi Nfii

T O M TAT

Hien nay, bdi trdn thiiy dgng dUdc sd diing khd pho bien trong cdc thiet bi mdy mdc. Cdc 6 titHy

dgng thudng dung trong cdc kit cdu cd tdc do quay vd tdi trong ldn. Vtec khdo sdt dp sudt thdy dgngtai

vung chiu tdi trgng cita 6 bdi trdn Udt cdy nghia quan trgng trong viic xdc dinh khd ndng tdi cita o, tddo,

CO the dUa ra cdc cdi tiin kit cdu hdp ly cho khd ndng tdt cao hdn. Thiet bi do dp sudt 6 thiiy ddng truyht

thong chu yeu sd dting cdc ddu do cd cd nhieu hqn chi vi tdn sd ldy mdu, sai so do tri ldn ddn den ddp itni

chdm hoac dung cdc ong bo tri xung quanh chu vi 6. Trong bdi bdo ndy tdc gid dd dUa ra gidi phdp do tip

sudt 6 thuy ddng sddiing ddu do so. Thiet bi khdo sdt dp sudt 6 thity ddngsd diing ddu do sd cho phip do

liin tttc dp sudt ddu trin chu vi 6 vd ddu do dUdc kit not mdy tinh. Tin hiiu dp sudt trin o thuy ddngqm

ddu do dugc chuyen doi thdnh tin hiiu sdvd mgt phdn mem mdy vi tinh cd nhiim vti xdy dting do thiap

sudt 0 thuy dgng trin chuvi 6. Gidi phdp so cho phep khdo sdt biin do dp sudt 6 thuy dgng chinh xdc, tilt

cdy vd hiiu qud rdt phu hdp vdl cdc phong thi nghiim chuyin ngdnh bdi trdn.

ABSTRACT

Now aday, hydraulic bearing lubrication is commonly used in many industrial equipments. Tk

hydraulic bearing is often used in high speed and heavy load mechanisms. Studying on hydraulicpressuri

at loading area of wet lubrication bearing play an important role tn determining the load capacity l^

the bearing and then propose structural Improvements for higher load capacity. Conventional hydradt

pressure measuring equipments mainly use mechanical gauges which have limitations in samplinS

frequency, errors due to slow response or sampling tubes arranged around the brush of the bearing. In M

paper propose a solution for measuring hydraulic pressure of journal bearing using only one digital sensot

This measuring equipment continuously rotates around the brush of bearing and measring result is setil

to computer. Pressure signals are proceed by a computer software then plot hydraulic pressure profile ofiti

bearing. The digital solution allows to study profile of hydraulic pressure accurately, reliablely, and effecHdj

It is absolutely appropriate with lubrication laboratories in Vietnam.

TAP CHI CO KHl VlfiT NAM • So 5 (Thang 5 nam 7(117^