Ntchito ya Bearings
Mapiritsi a mlatho amagwiritsidwa ntchito kusamutsa mphamvu kuchokera ku superstructure kupita ku substructure, kulola mitundu yotsatirayi ya kayendedwe kapamwamba: Kusuntha kwamasulira;ndi kusamuka komwe kuli koyima ndi kopingasa chifukwa cha mphamvu za mkati mwa ndege kapena kunja kwa ndege monga mphepo ndi kulemera kwake.Kusuntha kozungulira;chifukwa cha nthawi.Mpaka pakati pa zaka za zana lino, zotengera zomwe zimagwiritsidwa ntchito zinali zamitundu iyi:
· Pin
· Wodzigudubuza
· Rocker
· Zitsulo kutsetsereka mayendedwe
Pini yonyamula ndi mtundu wa zitsulo zokhazikika zomwe zimagwirizana ndi kasinthasintha pogwiritsa ntchito chitsulo.Kusuntha komasulira sikuloledwa.Pini yomwe ili pamwambayi imapangidwa ndi malo apamwamba komanso otsika omwe ali ndi pini yozungulira yolimba pakati.Nthawi zambiri, pamakhala zisoti kumapeto onse a pini kuti pini isasunthike pamipando ndikukana kukweza katundu ngati pakufunika.Chipinda chapamwamba chimalumikizidwa ndi mbale yokhayokha ndi bolting kapena kuwotcherera.Mbali yokhota m'munsi imakhala pa mbale ya zomangamanga.Kusuntha kwa Rotational ndikololedwa.Mayendedwe Otsatira ndi Omasulira Ndi Oletsedwa.
Roller Type Bearings
Podzipatula pakudzipatula pamakina, zodzigudubuza ndi zonyamula mpira zimagwiritsidwa ntchito.Zimaphatikizapo ma cylindrical rollers ndi mipira.Ndikokwanira kukana kusuntha kwautumiki ndikunyowetsa kutengera zinthu zomwe zimagwiritsidwa ntchito.
AASHTO imafuna kuti zodzigudubuza zowonjezera zikhale ndi "mipiringidzo yambiri yam'mbali" ndi kutsogoleredwa ndi gearing kapena njira zina zopewera kusuntha, skewing, ndi zokwawa (AASHTO 10.29.3).
A ambiri drawback kwa mtundu woterewu ndi chizolowezi kusonkhanitsa fumbi ndi zinyalala.Kusuntha kwautali kumaloledwa.Mayendedwe a Lateral Movements ndi Mazungulire Ndi Oletsedwa.
Mtundu wa Rocker Bearing
Kunyamula rocker ndi mtundu wokulirapo womwe umabwera mosiyanasiyana.Nthawi zambiri imakhala ndi pini pamwamba yomwe imathandizira kasinthasintha, ndi malo opindika pansi omwe amalola mayendedwe omasulira.Ma rocker ndi ma pini amagwiritsidwa ntchito makamaka pamalatho achitsulo.
Sliding Bearings
Chigawo chotsetsereka chimagwiritsa ntchito mbale imodzi yachitsulo kusuntha ndi ina kuti igwirizane ndi zomasulira.Malo otsetsereka amatulutsa mphamvu yothamanga yomwe imagwiritsidwa ntchito ku superstructure, substructure, ndi kunyamula komweko.Kuti muchepetse mphamvu yolimbanayi, PTFE (polytetrafluoroethylene) imagwiritsidwa ntchito ngati chowongolera chokondera.PTFE nthawi zina amatchedwa Teflon, dzina lake kuchokera ambiri PTFE mtundu.Ma Sliding Bearings amagwiritsidwa ntchito pawokha kapena amagwiritsidwa ntchito nthawi zambiri ngati chigawo chamitundu ina.Ma bere otsetsereka atha kugwiritsidwa ntchito pokhapokha ngati kusinthasintha komwe kumachitika chifukwa cha kupatuka pazithandizo sikungatheke.Chifukwa chake amangokhala kutalika kwa mita 15 kapena kuchepera ndi ASHTTO [10.29.1.1]
Makina otsetsereka okhala ndi ma coefficient of friction atha kupereka kudzipatula pochepetsa kuthamanga ndi mphamvu zomwe zimasamutsidwa.Ma Slider amatha kukana pansi pazithandizo, kusinthasintha komanso kusuntha mokakamiza poyenda.Ma slider okhala ndi mawonekedwe kapena ozungulira nthawi zambiri amawakonda kuposa makina otsetsereka athyathyathya chifukwa amabwezeretsa.Ma slider athyathyathya samapereka mphamvu yobwezeretsa ndipo pali mwayi wosuntha ndi zivomezi.
Knuckle Pinned Bearing
Ndi mtundu wapadera wa Roller Bearing momwe Pini ya Knuckle imaperekedwa kuti igwedezeke mosavuta.Pini ya knuckle imayikidwa pakati pa pamwamba ndi pansi.Kuponyedwa pamwamba kumamangiriridwa ku Bridge superstructure, pomwe kuponyedwa pansi kumakhazikika pama roller angapo.Kunyamula mapini a knuckle kumatha kutengera mayendedwe akulu ndipo kumatha kutengera kutsetsereka komanso kuyenda mozungulira.
Pot Bearings
POTI CHOBELERA chimakhala ndi silinda yachitsulo yosazama kwambiri, kapena mphika, pa axis yoyima yokhala ndi disiki ya neoprene yomwe ndiyoonda pang'ono kuposa silinda ndipo yolumikizidwa molimba mkati.Pistoni yachitsulo imalowa mkati mwa silinda ndi zimbalangondo pa neoprene.Mphete zamkuwa zosalala zimagwiritsidwa ntchito kusindikiza mphira pakati pa pisitoni ndi mphika.Rabara imakhala ngati madzi a viscous omwe akuyenda ngati kasinthasintha.Popeza kunyamula sikungakane nthawi yopindika, iyenera kuperekedwa ndi mpando wa mlatho.
Plain Elastomeric Bearings (Tawonani PPT)
Mapiritsi a Laminated Elastomeric Bearings
Zimbalangondo zopangidwa ndi zigawo yopingasa ya kupanga kapena zachilengedwe mphira mu zigawo woonda womangidwa pakati zitsulo mbale.Ma fani awa amatha kuthandizira katundu woyima kwambiri wokhala ndi zopindika zazing'ono.Ma fani awa amatha kusinthasintha pansi pa katundu wa lateral.Zovala zachitsulo zimalepheretsa mphira kuti zisafufutike.Ma cores otsogolera amaperekedwa kuti awonjezere mphamvu yonyowa chifukwa ma fani a elastomeric samapereka kunyowa kwakukulu.Nthawi zambiri zimakhala zofewa m'njira yopingasa komanso zolimba molunjika.
Zimapangidwa ndi chotchinga cha laminated elastomeric chokhala ndi silinda yotsogolera pakati pa zonyamula.Ntchito ya mphira-zitsulo laminated gawo la kunyamula ndi kunyamula kulemera kwa kapangidwe ndi kupereka pambuyo zokolola elasticity.Chotsogolacho chimapangidwa kuti chisokoneze pulasitiki, potero chimapereka kutaya mphamvu kwamphamvu.Mapiritsi a mphira amtovu amagwiritsidwa ntchito m'malo ogwedezeka chifukwa cha zivomezi zambiri.
Nthawi yotumiza: Nov-22-2022