The Type Of WJLQ-200KN Nonbracket Cable Crane Research And Design

The Cable Crane is a sort of special hoisting machinery, which uses flexible cable hung between two fulcrums as carrying structure, makes use of the crane carriage moving over the carrying cable to work, and hold the ability of vertical transporting and horizontal transporting. Compared with other hoisting machinery, it possess many advantages, such as big span, high speed, high efficiency, simple structure, cheap cost and so on. And it also can get rid of the limit of weather and landform, exert the efficacy that other hoisting machinery and hoisting technology can't bring into play under specific condition. As a result, it is widely used in many fields such as mining industry, forest industry, dock, ferry, bridgework, water and power engineering.But the conventional design way is very complex, and the safety factor figured out with traditional design pattern is a bit of bigger, and this makes against exerting the ability of devices. Furthermore, because of the landform of working field, the pylons of crane are usually difficult to mount. Even if they can be mounted , they may spend many times. So this paper aim at these questions, though choose suitable mechanics model of cable and analyze the model to educe correlative formula of calculate and validate. Integrate design the type of WJLQ-200 Nonbracket Cable Crane for river crossing bridge of hydro-junction engineering of Jiudianxia, Gansu and many years' experience of author, educe simply and applied formula of calculate and validate for the Nonbracket Cable Crane and logical design mode and course. Consequently, when design the Nonbracket Cable Crane for the future can greatly enhance efficiency, shorten cycle of design, save cost and gain great economy benefit.It is inevitable that some crane's parameter such as working temperature, actual span and so on will change because of the affection of install precision, the change of working condition and actual needs. As a result, it will affect the tension force of carrying cable and carrying capacity. And the tension force and carrying capacity have close relation to the performance of cable crane and operational security. So this paper will study how these factors will affect tension and carrying capacity. It also will analyze the sensitivity of tension and carrying capacity to each factor.