Design and Improvement of Grane-boring Construction

Small-sized wheel crane produced by No.1(Luoyang) construction and machinery Limited Company,adapted boring-link structure,swing angle ±35°,flail radius is smaller,front work device operates quick,especially fit for narrow worksite.By setting a liner with heat treatment into upper and lower boring hole,improved its pressure and wear-resistance capability.To add flange fix tight under bore board not only reduce bore opening accuration,but also easy to assemble,maintenance and replace.