Mlatho wa Zhongtang womwe uli mumsewu waukulu wa xx uli ndi kutalika kwakukulu kwa 32.5 + 4 × 45 + 32.5m ndi gawo lofanana lolimba lolimba la konkriti lopitilira bokosi (njira yopumira), kutalika kwake kwa 245.9m. Bokosi girder ndi chipinda chimodzi, kutalika kwa mtengo pakati ndi 308.25cm, denga m'lifupi ndi 1100cm (m'lifupi mwa sitima ya mlatho ndi 12m), ndipo pansi mbale m'lifupi ndi 480cm. Ukonde umapendekeka, ndipo mtunda wapakati pamwamba pa mbale ndi 570cm. Mapeto a mtengowo ndipo pakati pa mtengo wonsewo amapatsidwa matabwa, ndipo ena onse amapatsidwa ma diaphragms pa 15m iliyonse.
Maziko a pier a mlatho waukulu ndi milu 4 yobowoleza yokhala ndi mainchesi 120cm, yomwe imayikidwa pamwala wopitilira 50cm. Thupi la pier limakhala ndi mizere iwiri ya konkriti yolimbitsidwa ndi mainchesi 180cm.
Mlatho ukamangidwa, njira ya SSY imagwiritsidwa ntchito, ndiko kuti, njira yokankhira mfundo zambiri imagwiritsidwa ntchito kuyika mtengowo. Makhalidwe a njirayi ndi awa: mphamvu yopingasa momwe ikukankhira (kukoka) thupi la mtengo limabalalitsidwa ndikuchitapo kanthu pa pier iliyonse, ndipo ntchito yokankhira (kukoka) imatha kuyendetsedwa chapakati. Popeza palibe ma piers osakhalitsa panthawi ya ntchito, kutsogolo kwa bokosi la bokosi kumagwirizanitsidwa ndi chitsulo chopangidwa ndi chitsulo cha 30m monga chowongolera.
Chomangira cha bokosi chokhazikika chikankhidwira m'mwamba, chimachitika mozungulira molingana ndi njira zopititsira patsogolo → kukweza mtengo → kugwetsa → kuthamanga. Chithunzi 1 chikuwonetsa vuto la kuzungulira.
Chithunzi cha ndondomeko ya kukankhira mmwamba
1——Vertical Cylinder;2——Kokani Mutu;3——Slideway;4——Pudzu Rod;5——Horizontal Cylinder
Zitha kuwoneka kuti kuti muzindikire kuzungulira kwa pulogalamuyi, silinda yopingasa imamaliza kukankha chotchinga cha bokosi kudzera pa chipangizo chotsetsereka, ndipo silinda yoyima imamaliza kukweza ndi kugwetsa mtengo. Ndiye kuti, silinda yopingasa ndi silinda yoyima imasinthidwa mosinthana.
1. Dongosolo la Hydraulic la multi-point pusher mtengo ndi kuwongolera kwake
Zonse za silinda yopingasa ndi silinda yowongoka zimayendetsedwa ndi hydraulically ndipo zimayendetsedwa ndi magetsi. Utali wonse wa girder wa bokosi kuti ukankhidwe pa mlatho ndi 225m, ndipo mita iliyonse yozungulira imalemera 16.8t, ndi kulemera kwake pafupifupi 3770t. Choncho, ma cylinders okwana 10 opingasa ndi ma 24 ofukula (kuthamanga kwa mafuta ndi 320kg / cm2 ndipo zotsatira zake ndi 250t) zimakonzedwa. Pali ma pier 5 okhala ndi masilinda opingasa, 2 pa pier iliyonse; pali ma pier 6 a masilinda oyima, 4 pa pier iliyonse.
Jack woyima amamaliza kukweza ndi kutsitsa mtengowo. Pomanga, mlatho wonse suyenera kulumikizidwa, ndipo ma piers amafunika kugawidwa, kotero palibe vuto la kuwongolera pakati. Kuwongolera kwake kwamagetsi kumatha kumaliza kukweza kapena kutsitsa jack mosalekeza, komanso kumaliza fomu yothamanga.
Jack yopingasa imamaliza ntchito yokankhira mtengo. Ntchito yomangayi imafuna kuti mlatho wonse ukhale wofanana, ndiko kuti, kutulutsa kapena kuyimitsa nthawi imodzi, kotero kuti kulamulira kwapakati pa jack yopingasa kumakhazikitsidwa, ndipo bokosi lamagetsi lapakati limakhazikitsidwa kuti lichite izi.
Kugwiritsa ntchito jacks yopingasa ndi jacks ofukula pang'onopang'ono kuwonjezeka, ndipo bokosi girder ndi prefabricated 15m pa kuzungulira. Ndi kukula kosalekeza kwa girder ya bokosi, chiwerengero cha jacks chomwe chimagwiritsidwa ntchito pang'onopang'ono chikuwonjezeka. M'magawo angapo omaliza opangiratu, onse a 10 seti zopingasa jacks ndi 24 vertical jacks ntchito.
Kuti tilumikize pier iliyonse ndi chipinda chowongolera chapakati, tidayika makina otumizira mawu a intercom. Zochita zatsimikizira kuti ma hydraulic transmission system ndi njira zowongolera zomwe zalembedwa pamwambapa ndizodalirika kugwiritsa ntchito.
Tiyeni tikambirane zina mwazovuta zingapo zama hydraulic transmission of the push frame mtengo njira kuti tifotokozere.
1. Vuto la graded pressure regulation of the hydraulic system. Vuto la kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwekazi ka kayendetsedwe kabwino kabwinobwinobwinobwinobwino kabwinobwinobwinobwinobwinobwinobwinobwinobwinobwinobwinobwinokekenayonayodweke ndizovuta kwambiri' M'mbuyomu, nthawi zonse ankakhulupirira kuti hydraulic system iyenera kukhala ndi mphamvu ziwiri kapena zitatu za mafuta: pamene kulimbana kwa static friction kugonjetsedwa, mafuta akuluakulu amagwiritsidwa ntchito; ndi mphamvu yaing'ono ya mafuta imagwiritsidwa ntchito pamene mtengo wa bokosi ukugwedezeka. Njirayi ndiyo kusintha ma hydraulic system mwa kulumikiza ma valve osiyana siyana omwe akhazikitsidwa. Mwanjira iyi, ma hydraulic system ndi kuwongolera kwake kumakhala kovuta kwambiri. Mchitidwe wathu watsimikizira kuti kuthamanga kwa mafuta a hydraulic system sikudalira pawokha, koma kukana kwa kunja kwa jack. Izi zikutanthauza kuti, pamene hydraulic system ikugwira ntchito, kuthamanga kwake kwa mafuta sikudziwika ndi kuchuluka kwa dzina la pampu ya mafuta, koma ndi kukana kwathunthu komwe kumakumana nawo panthawi yomwe mafuta akubwerera ku thanki yamafuta atasiya mpope. . Ngati jack ilibe kukana (katundu), kukakamiza kwa pampu yamafuta kumangotsimikiziridwa ndi kukana kwa payipi; ngati mafuta a pampu ya mafuta nthawi yomweyo amalowa mumlengalenga kapena tanka ya mafuta, kupanikizika kwa pampu ya mafuta kudzakhala zero; ngati kukana (katundu) R kwa jack kumawonjezeka, kupanikizika kwa pampu yamafuta kunakulanso. Pamene jack imatsitsidwa, kupanikizika kwa pampu ya mafuta kumatsimikiziridwa ndi valve ya njira imodzi; pamene jack yadzaza, kupanikizika kwa pampu ya mafuta, ndiko kuti, kuthamanga kwa mafuta a dongosolo, kudzatsimikiziridwa ndi kukana kwa jack. Kuthamanga kwa mafuta kuntchito kumatsimikiziridwa ndi jack load. Izi zikutanthauza kuti, kuthamanga kwa mafuta a hydraulic system kudzasintha kokha ndi kukana kwakunja, kotero kuti ndondomeko yowonongeka ndi sitepe ndi yosafunika.
2. kulunzanitsa nkhani ya jacks yopingasa. Kukankhirako kumafunikira kuti ma jacks opingasa kumanzere ndi kumanja akankhire mtengowo patsogolo pa liwiro lomwelo, apo ayi mtengowo umapatuka ukatsetsereka. Zoonadi, chinthu choyamba chimene anthu amalingalira ndi chakuti mphamvu yogwiritsidwa ntchito ndi jacks yopingasa kumanzere ndi kumanja ku thupi la mtengo iyenera kukhala yofanana, yomwe ili yolondola. Pamene symmetry ya kumanzere ndi kumanja kwa thupi la mtengo ndi yabwino kwambiri, ndipo kukana kuli kofanana ndi kumanzere ndi kumanja, ndithudi, mphamvu yogwiritsidwa ntchito ndi ma jacks opingasa kumanzere ndi kumanja ayeneranso kukhala ofanana. Kulingalira kwachiwiri ndikuti liwiro lakumanzere ndi lakumanja liyeneranso kukhala lofanana. Mwanjira iyi, mtengowo ukhoza kuyenda bwino komanso molunjika. Komabe, ndizovuta kuti thupi la mtengo liwonetsetse kuti gawo lililonse liyenera kukhala lofanana bwino kumanzere ndi kumanja, ndipo kukana kumanzere ndi kumanja kuyenera kukhala kofanana. Kuthamanga kwa mafuta okhudzana ndi dongosolo lotchulidwa pamwambapa kumatsimikiziridwa ndi kukana kwakunja. Titha kuganiza kuti ma jacks akumanzere ndi kumanja ayenera kugwira ntchito mosiyanasiyana kutengera mafuta, ndiye kodi kuthamanga kwa ma jacks akumanzere ndi kumanja kudzalumikizidwa panthawiyi? Chifukwa cha fanizo, akuganiziridwa kuti jekete imodzi yokha ya pier imodzi ikugwira ntchito. Popeza timayika pampu imodzi ndi jack imodzi, izi zimathetsa vuto la kulunzanitsa liwiro bwino kwambiri. Chifukwa pampu yamafuta yomwe timagwiritsa ntchito ndi mpope wochulukirachulukira, mwachidziwitso, mosasamala kanthu kuti mafuta amtundu wa pampu akumana bwanji ndi pampu yamafuta (ndiko kuti, mosasamala kanthu za kuchuluka kwa mphamvu yamafuta a dongosololi), kuchuluka kwake kumatuluka. zosasinthika. Chifukwa chake, ma jacks akumanzere ndi kumanja ayenera kulumikizidwa. Zachidziwikire, mawu omalizawa athanso kuganiziridwa pazigawo ziwiri zokhala ndi nsonga zinayi, zipilala zitatu zokhala ndi nsonga zisanu ndi imodzi, zida zinayi zokhala ndi nsonga zisanu ndi zitatu, kapena zibowo zisanu zokhala ndi nsonga khumi. Choncho, njira yathu ya mpope imodzi ndi pamwamba imodzi imatha kuzindikira bwino vuto la kulunzanitsa kumanzere ndi kumanja. Kuyeserera kwatsimikiziranso kuti mu mtengo wokankhira, mzere wapakati wa mtengo wa bokosi sunasinthidwe (kunena kwenikweni, uyenera kusinthidwa pang'ono kuchokera kumanzere kupita kumanja koma ukhoza kusungidwa mumtundu wina). Ntchito yomangayi imafuna kuyang'anitsitsa kwambiri kupatuka kwa mzere wapakati. Ngati ipitilira 2cm, iyenera kuwongoleredwa (ndi chitsogozo chotsatira). Pakankhira-mmwamba ndondomeko, chiwerengero cha zowongolera ndi chochepa kwambiri. Kamodzi kokha kapena kawiri mu kukankha makumi atatu (15m bokosi girder). Izi zitha kuganiziridwa ngati chotsatira chophatikizana chazinthu zambiri zomwe zili ndi cholinga, chifukwa makina opangira ma hydraulic, pampu yamafuta imakhala ndi vuto loyenda, jack imakhala ndi zovuta zotuluka mkati (jack iliyonse ndi yosiyana, ndipo pisitoni ikhoza kukhala m'malo osiyanasiyana. ), ndi dongosolo Kutayikira kwa zipangizo zina mkati, etc., zomwe sizikutsutsana ndi mapeto athu pamwambapa.
3. Kulunzanitsa nkhani ya jacks ofukula. jacks athu ofukula ntchito ndi mpope ndi jacks anayi, ndi valavu synchronizing ayenera kukhazikitsidwa, chifukwa synchronizing valavu (kapena valavu diverter) akhoza kupanga jacks angapo pansi katundu osiyana (kukana) kupeza chiŵerengero chodziwikiratu kapena ofanana mafuta okwanira kukwaniritsa. kulunzanitsa. Koma poganizira kuti valavu yolumikizira ili ndi malo awiri okha. Kuti muchepetse mawonekedwe a dongosolo, palibe valavu yolumikizira yomwe imayikidwa. Poganizira kuti zolemera za kumanzere ndi kumanja za girder ya bokosi ndizofanana, si vuto lalikulu kutero. Kuyeserera kwatsimikizira kuti kuyerekezerako ndi kolondola, jack woyimirira kwenikweni amakwera ndikugwa molumikizana, ndipo palibe vuto pakukweza ndi kugwa kwa mtengowo.
Nthawi yotumiza: May-16-2022