A kasupe wa masambandiye chinthu chomwe chimagwiritsidwa ntchito kwambiri poyimitsa magalimoto.Ndi mtengo wotanuka wokhala ndi mphamvu pafupifupi zofanana wopangidwa ndi masamba angapo a kasupe a aloyi a m'lifupi mwake ndi kutalika kosafanana.Imakhala ndi mphamvu yoyima yomwe imayambitsidwa ndi kulemera kwakufa ndi katundu wagalimoto ndipo imagwira ntchito yowopsa komanso yotsitsa.Nthawi yomweyo, imathanso kusamutsa torque pakati pa thupi lagalimoto ndi gudumu ndikuwongolera njira yamagudumu.
Pogwiritsa ntchito magalimoto, kuti akwaniritse zofunikira za misewu yosiyana siyana ndi kusintha kwa katundu, ndizosapeŵeka kuonjezera kapena kuchepetsa chiwerengero cha akasupe a masamba a galimotoyo.
Kuwonjezeka kapena kuchepa kwa chiwerengero cha akasupe a masamba kudzakhala ndi zotsatira zina pa kuuma kwake ndi moyo wautumiki.M'munsimu muli mawu oyamba ndi kusanthula za izi.
(1) Themawerengedwe formulaza kuuma kwa masamba a kasupe wamba C ndi motere:
Ma parameter akufotokozedwa pansipa:
δ: Shape factor (nthawi zonse)
E: Elastic modulus zinthu (nthawi zonse)
L: Kutalika kwa ntchito kwa kasupe wa masamba;
n: Chiwerengero cha masamba a masika
b: Kutalikirana kwa kasupe wa masamba
h: Makulidwe a tsamba lililonse la masika
Malinga ndi formula yowerengera ya stiffness (C) yomwe yatchulidwa pamwambapa, mfundo zotsatirazi zitha kuganiziridwa:
Nambala ya masamba a msonkhano wa masika amafanana ndi kuuma kwa msonkhano wa masika.Kuchuluka kwa tsamba la masamba a kasupe wa masamba, kumakhala kolimba kwambiri;kucheperachepera kwa tsamba la masamba a kasupe, kumachepetsa kulimba .
(2) Njira yojambula yojambula kutalika kwa tsamba lililonsemasamba akasupe
Popanga kasupe wa masamba, kutalika koyenera kwa tsamba lililonse kukuwonetsedwa mu Chithunzi 1 pansipa:
(Chithunzi 1. Utali wokwanira wa kapangidwe ka tsamba lililonse la kasupe wa masamba)
Mu chithunzi1, L / 2 ndi theka la kutalika kwa tsamba la masika ndipo S / 2 ndi theka la kutalika kwa mtunda wokhotakhota.
Malinga ndi kapangidwe kake ka kutalika kwa kasupe wa masamba, mfundo zotsatirazi zitha kuganiziridwa:
1) Kuwonjezeka kapena kuchepa kwa tsamba lalikulu kumakhala ndi kuwonjezereka kapena kuchepa kofananira pa kuuma kwa tsamba la masika, lomwe silingakhudze mphamvu ya masamba ena, ndipo silingawononge moyo wautumiki wa msonkhano wa masika a masamba.
2) Kuchulukitsa kapena kuchepatsamba losakhala lalikuluzidzakhudza kukhwima kwa tsamba kasupe msonkhano ndipo pa nthawi yomweyo ndi zotsatira zina pa moyo utumiki wa tsamba kasupe msonkhano.
① Wonjezerani tsamba lomwe silili lalikulu la masamba a masika
Malingana ndi njira yojambula zojambula za kasupe wa masamba, pamene tsamba losakhala lalikulu likuwonjezeredwa, kutsetsereka kwa mzere wofiira womwe umatsimikizira kutalika kwa masambawo kudzakhala kwakukulu pambuyo pokokedwa kuchokera ku O point.Kuti tsamba la masika likhale loyenera, kutalika kwa tsamba lililonse pamwamba pa tsamba lowonjezereka liyenera kukulitsidwa mofanana;kutalika kwa tsamba lililonse pansi pa tsamba lowonjezereka liyenera kufupikitsidwa mofanana.Ngati si chachikulukasupe wa masambaimawonjezeredwa pakufuna, masamba ena omwe siakulu sangagwire bwino ntchito yawo, zomwe zingakhudze moyo wautumiki wa msonkhano wa masika.
Monga momwe chithunzi 2 chili pansipa.Pamene tsamba lachitatu losakhala lalikulu likuwonjezedwa, tsamba lachitatu lofananira lidzakhala lalitali kuposa tsamba lachitatu loyambirira, ndipo kutalika kwa masamba ena osakhala aakulu kumachepetsedwa moyenerera, kotero kuti tsamba lililonse la tsamba la masika likhoza kusewera. udindo.
(Chithunzi 2. Tsamba losakhala lalikulu lawonjezeredwa ku gulu la masika)
②Chepetsani tsamba losakhala lalikulu la msonkhano wa masika
Malingana ndi njira yojambula zojambula za kasupe wa masamba, pochepetsa tsamba losakhala lalikulu, mzere wofiira womwe umatsimikizira kutalika kwa masamba umachokera ku O point ndipo otsetsereka amakhala ochepa.Kuti msonkhano wa kasupe wa masamba ukhale wabwino, kutalika kwa tsamba lililonse pamwamba pa tsamba lochepetsedwa liyenera kuchepetsedwa molingana;kutalika kwa tsamba lililonse pansi pa tsamba lochepetsedwa liyenera kuwonjezeka molingana;kuti apereke sewero labwino kwambiri pagawo la zida.Ngati tsamba losakhala lalikulu likuchepetsedwa mwakufuna, masamba ena omwe siakulu sangagwire bwino ntchito yawo, zomwe zidzakhudza moyo wautumiki wa msonkhano wa masika.
Monga momwe chithunzi 3 pansipa.Chepetsani tsamba lachitatu losakhala lalikulu, kutalika kwa tsamba lachitatu latsopano lidzakhala lalifupi kuposa tsamba loyambirira lachitatu, ndipo kutalika kwa masamba ena omwe siakuluwo kukhale kotalikitsidwa, kotero kuti tsamba lililonse la tsamba la masika likhoza kusewera. udindo woyenera.
Chithunzi 3. Masamba osakhala aang'ono achepa kuchokera ku masika a masamba)
Kupyolera mu kusanthula kwa formula yowerengera kuuma ndi njira yojambulira masamba, mfundo zotsatirazi zitha kuganiziridwa:
1) Chiwerengero cha masamba a masika chimagwirizana mwachindunji ndi kuuma kwa akasupe a masamba.
Pamene m'lifupi ndi makulidwe a tsamba kasupe amakhalabe zosasinthika, m'pamenenso chiwerengero cha masika masamba, ndi waukulu stiffness wa tsamba kasupe msonkhano;chiwerengero chochepa , ndi chocheperapo kuuma kwake .
2) Ngati mapangidwe a kasupe a masamba amalizidwa, kuwonjezera tsamba lalikulu silingakhudze moyo wautumiki wa gulu la masika, mphamvu ya tsamba lililonse la kasupe wa masamba ndi yunifolomu, ndipo kugwiritsa ntchito kwazinthu ndizomveka. .
3) Ngati mapangidwe a kasupe a masamba atsirizidwa, kuwonjezeka kapena kuchepa kwa tsamba losakhala lalikulu kudzakhala ndi zotsatira zoipa pa kupsinjika kwa masamba ena ndi moyo wautumiki wa msonkhano wa masika.Kutalika kwa masamba ena kudzasinthidwa nthawi yomweyo pamene kuwonjezeka kapena kuchepetsa chiwerengero cha masamba a kasupe.
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Nthawi yotumiza: Mar-12-2024
