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环形预应力砼电杆是电力,通讯事业不可缺少的重要通用设施,分为锥形杆(组装杆和整根杆)和等径杆(组装杆)两大类、其中,整根锥形电杆应用更为广泛。采用托轮离心成型法生产整根锥形电杆在国内已十分普及,由于电杆的规格繁多,预制工厂要适应社会的需求增加产品规格,就必须耗费大量的资金来添置相应规格的钢模,这种添置对于多数工厂,尤其是品种较多,批量不十分大的中小厂自然是一种沉重的负担。又因电杆钢模用钢量大,例如,加工梢径φ150mm、长度8m电杆的配套钢模型号为DMZ150-80,其自重达2900kg,由此不难推想,砼电杆加工行业为此而消耗的钢材是
Circular prestressed concrete pole is an indispensable and important general facility for electric power and communication industry. It is divided into two types: tapered rod (assembly rod and whole rod) and equal diameter rod (assembly rod). Rods are more widely used. The production of whole cone-shaped poles by roller centrifugal moulding has been very popular in China. Due to the numerous specifications of poles, prefabricated factories must meet the needs of the society and increase the product specifications, so they must spend a lot of money to purchase steel moulds of the corresponding specifications. This kind of acquisition is naturally a heavy burden for most factories, especially for small and medium-sized plants with a large number of products. Because of the large amount of steel used in steel poles for electric poles, for example, the supporting steel model No. for machining tip diameter φ150mm and length 8m pole is DMZ150-80, and its weight is 2900kg, which is not difficult to infer. The consumption of steel is