论文部分内容阅读
我厂于1986年初在QTK40塔机上设计和试验成功依靠塔身自重的自动折臂法效果很好。《建筑机械化》杂志1987年第9期刊登了“塔机的一种节能式折臂机构”文章,所采用的折臂原理和我厂设计的折臂原理相同,都是以塔身自重为动力,但折臂方案不同。 1.折臂的作用和适应机型折臂是指臂架在空中自动折起或展开,即在塔身搬起立直后,折叠悬挂于塔身一侧的臂架,随内塔升出而自动在空中展平成工作状态的过程。自动折臂的作用有三点:①减少上塔身前倾弯矩;②当内塔身下加标准
Our plant was designed and tested on the QTK40 tower crane in early 1986. The automatic folding arm method relying on the weight of the tower body worked well. In the 9th issue of “Mechanization of Construction”, published in the 9th issue of the magazine “Construction Mechanization”, an article entitled “Energy Efficient Folding Arm Mechanism for Tower Cranes” was adopted. The principle of the folded arm used was the same as the principle of the folding arm designed by our factory, and it was based on the weight of the tower itself. , but the folding arm scheme is different. 1. The function of the folding arm and the adapting mechanism The folding arm means that the arm frame is automatically folded or unfolded in the air, that is, after the tower body is lifted and erected, the boom frame suspended on the side of the tower body is folded and rises with the inner tower. The process of automating the work in the air. The role of automatic folding arm has three points: 1 reduce the upper tower forward bending moment; 2 when the inner tower body plus the standard