MG20t-320t U-nau'i biyu beam ƙofar irin crane ne wani nau'i na gada irin crane, tsarin kamar ƙofar don haka ake kira ƙofar irin. Karfe tsari na lantarki biyu beam ƙofar irin crane kamar ƙofar tsarin, daukar huɗu kafafu a ƙarƙashin babban beam shigar, za a iya tafiya kai tsaye a kan hanyar ƙasa, babban beam biyu ƙarshen za a iya samun fitarwa m beam. Ya ƙunshi gade, babban motar aiki, ƙananan motar, kayan aikin lantarki da sauran abubuwa. Gidan yana amfani da akwatin nau'in walda guda ɗaya, kuma babban motar aiki yana amfani da motar daban-daban. Mechanisms duk a cikin manipulation na ciki.