多跨索道的可移动中间支架设计

传统索道因鞍座固定不可移动的限制，其发展受到制约。为实现多跨索道的灵活性与经济性，急需研制一种可改变各跨跨距的索道，其关键技术是多跨索道的可移动中间支架。可移动中间支架的设计思路主要在于如何实现鞍座所在支架的移动，以一条预建厂内多跨索道为依托，对可移动中间支架方案进行了比选，阐述了可移动中间支架的工作原理。创造性地将万向轮和中间支架相结合，实现中间支架的移动，在不需要移动的时候，使用顶升装置将支架顶起，从而使万向轮不受力。对其结构的主要构件进行了设计计算，构建了1∶25的实物模型，演示了多跨索道中间支架的可移动原理，并通过模型对可移动中间支架的可行性进行了验证，结果表明该中间支架的设计研究能够满足使用要求。

Design of movable intermediate supportfor multi-span cableway

Because of the immovable intermediate support, the development of traditional cableway was restricted. In order to achieve the flexibility and economy of multi-span cableway, it was urgently needed to develop a cableway with variable span distances, and the key technology was the movable intermediate support of the multi-span cableway. The main idea of intermediate support lied in how to achieve the movement of the intermediate support in the bracket. Taking a multi-span cableway within a pre-construction as a basis, the feasible movable intermediate support scheme was selected, and the working principle of the selected scheme was elaborated. The design creatively combined the universal wheel and intermediate support bracket, so as to realize the movement of the intermediate support bracket. When the intermediate support did not need to move, the device of jack-up performed to support the bracket, and there was no force acting to the universal wheel. Meanwhile the structure of the main components of movable intermediate support was designed and calculated. At last, an 1∶25 physical model was built, which could demonstrate the moving principle of multi-span cableway intermediate support, and the feasibility of the movable intermediate support was verified based on the model, the result showed that the intermediate support satisfied the requirements.