Lub hauv paus ntsiab lus ua haujlwm thiab muaj pes tsawg leeg ntawm lub load cell

Lub hauv paus ntsiab lus ua haujlwm thiab muaj pes tsawg leeg ntawm lub load cell

Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub xov tooj ntawm tes: lub cev elastic (elastic element, rhiab beam) ntawm lub xovtooj ntawm tes yog elastically deformed nyob rau hauv qhov kev txiav txim ntawm ib tug sab nraud quab yuam, thiab cov kuj strain gauge (hloov caij) txuas rau nws nto deformed raws li. Tom qab qhov kev ntsuas qhov ntsuas tsis zoo yog deformed, nws qhov kev tiv thaiv yuav hloov pauv (nce lossis txo), thiab tom qab ntawd qhov kev hloov pauv no yuav hloov mus rau hauv lub teeb liab hluav taws xob los ntawm kev ntsuas ntsuas hluav taws xob, yog li ua tiav cov txheej txheem ntawm kev hloov hluav taws xob sab nraud rau hauv lub teeb liab hluav taws xob. Nws tuaj yeem pom tau tias qhov ntsuas qhov ntsuas qhov ntsuas tsis kam, lub cev elastic, kuaj xyuas Circuit Court thiab kis tau tus mob yog qhov tseem ceeb ntawm cov khoom siv tiv thaiv kab mob.

1. Kev kuaj xyuas Circuit Court Kev ua haujlwm ntawm kev kuaj xyuas Circuit Court yog los hloov qhov kev hloov pauv ntawm qhov ntsuas qhov ntsuas tsis kam mus rau hauv qhov tso zis hluav taws xob. Tus choj Wheatstone muaj qhov zoo ntawm kev tiv thaiv kev cuam tshuam ntawm qhov kub thiab txias, tiv thaiv kev cuam tshuam rau sab nraud, thiab yooj yim daws cov teeb meem ntawm lub xov tooj ntawm tes, yog li tus choj Wheatstone tau siv dav hauv lub xov tooj ntawm tes. Txij li thaum tus choj puv vaj huam sib luag ntawm caj npab muaj qhov siab tshaj plaws, qhov tsis sib xws ntawm txhua sab caj npab zoo ib yam, thiab kev cuam tshuam ntawm ntau yam kev cuam tshuam yog ib qho yooj yim rau kev tshem tawm ib leeg, yog li lub xov tooj ntawm tes tau txais ib qho kev sib npaug ntawm caj npab.

2. Elastomer Ib qho elastomer yog cov tswv cuab nrog cov qauv tshwj xeeb. Nws muaj ob txoj haujlwm. Ua ntej, nws dais lub zog sab nraud ntawm lub xov tooj ntawm tes thiab ua kom muaj zog tiv thaiv tawm tsam sab nraud kom ua tiav qhov sib npaug zoo li qub; Qhov thib ob, nws yuav tsum tsim kom muaj qhov zoo tshaj plaws strain teb (chaw), kom cov kev tiv thaiv strain gauges daig hauv cheeb tsam no tuaj yeem ua kom tiav Transformation dej num rau strain jujube signals.

3. Resistance strain gauge The resistance strain gauge is a strain gauge in which resistance wires are mechanically distribution on a substrate made of an organic material. Ib qho ntawm nws qhov tseem ceeb tsis yog qhov rhiab heev coefficient k. Thaum nws ob qhov kawg raug rau F quab yuam, nws yuav ncab, uas yog, deformed. Yog hais tias nws yog elongated, nws qhov cross-sectional cheeb tsam yuav txo, uas yog, nws truncated vojvoog vojvoog yuav txo. Qhov kev hloov pauv hloov pauv (tus txheeb ze hloov pauv hauv qhov tsis kam) yog proportional rau qhov elongation ntawm cov hlau tsis kam (qhov txheeb ze hloov qhov ntev). Nws yuav tsum tau muab sau tseg tias qhov rhiab heev coefficient K yog ib qho kev txiav txim siab tas li los ntawm cov khoom ntawm cov khoom siv hlau tsis zoo, thiab tsis muaj dab tsi cuam tshuam nrog cov duab thiab qhov loj ntawm qhov ntsuas ntsuas. Tus nqi K ntawm cov khoom sib txawv feem ntau yog nyob nruab nrab ntawm 1.7-3.6; Qhov thib ob, tus nqi K yog qhov tsis muaj qhov ntau, uas yog, nws tsis muaj qhov loj me. Hauv cov khoom siv tshuab, L / L yog hu ua cov lej ntawm cov kab mob. Siv nws los sawv cev elasticity feem ntau loj dhau los ua kom yooj yim. Feem ntau nyob rau hauv units.