Mtsinje waukulu wasingle-girder bridge cranendi osagwirizana, zomwe zimakhudza mwachindunji processing wotsatira. Choyamba, tithana ndi kutsetsereka kwa mtengowo tisanapitirire kunjira ina. Ndiye nthawi ya sandblasting ndi plating idzapangitsa kuti mankhwalawa akhale oyera komanso opanda cholakwika. Komabe, ma cranes a mlatho okhala ndi mitundu yosiyanasiyana ndi magawo amakhala ndi mawonekedwe osiyanasiyana amitengo yawo yayikulu. ku
Choyamba tiyenera kumvetsetsa mfundo ziwiri zotsatirazi za mankhwala:
1. Ndi zipangizo ziti ndi mawonekedwe a bolodi omwe amafunikira pokonza mtanda waukulu wa makina a mlatho (matabwa, mipukutu, zigawo zooneka bwino, olamulira)?
2. Poganizira kukula kwa mtengo waukulu ndi pamwamba pa crane-girder crane (malingana ndi mankhwala, njira zosiyanasiyana zochepetsera zimatha kusankhidwa kuti amalize mtengo ndi kuwongolera magwiridwe antchito), ndi mtundu wanji wa kuwongolera ndi zofunikira zogwiritsiridwa ntchito. mtengo waukulu?
Pakadali pano, pali njira ziwiri zothanirana ndi kutsetsereka kwa mtengo waukulu wa crane:
1. Kugwiritsa ntchito makina opangira mawotchi ndikuchotsa magawo opukutidwa a convex mwa kudula ndi mapindikidwe a pulasitiki a zinthu zakuthupi kuti apeze njira yosalala pamwamba pa kupukuta, ndipo nthawi zambiri amagwiritsa ntchito miyala yopera, kupukuta madzimadzi, ndi zina zotero.
2. Kupukuta kwa mankhwala. Mankhwala kupukuta ndi kupanga tinthu ting'onoting'ono convex mbali m'deralo convexity deta kusungunuka choyamba mankhwala sing'anga, potero kupeza pamwamba yosalala. Ubwino waukulu wa njirayi ndikuti zida zovuta zogwirira ntchito zimatha kupukutidwa popanda zida zovuta, ndipo mbale zambiri zachitsulo zimatha kupukutidwa nthawi imodzi. Vuto la kupukuta kwamankhwala ndikugwiritsa ntchito madzi opukutira ndi zida zopangira. Kuuma kwapamwamba komwe kumapezeka ndi kupukuta kwamankhwala kumakhala 10μm.
