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一、现有夹钳起重机的啃道情况1977年初,笔者曾经参与对首钢、鞍钢等九大钢厂的夹钳起重机(以下简称钳式吊)进行调查研究,共计调查37台不同类型的钳式吊,它们的啃道情况可以概述如下。从大车啃道情况来看,可分为三种类型:大冶钢厂较轻,车轮寿命可达3～4年;首钢、鞍钢和上钢属于中等,车轮寿命约一年左右;包钢、武钢和大钢等较严重,车轮寿命平均在一年以下,半年左右。本钢的钳式吊刚投产不久,尚无检修记录。小车啃道的情况普遍比大车严重;特别是大冶钢厂,大车啃道情况最好,但小车情况却是几个主要钢厂里最严重的。
In early 1977, the author once participated in the investigation and study of the clamp cranes (hereinafter referred to as the clamp-type cranes) of the nine major steel mills such as Shougang Group and Anshan Iron and Steel Group Co., Ltd., and investigated a total of 37 different types of tongs Hanging, they chew the situation can be summarized as follows. From the cart eating Road situation, can be divided into three types: Daye steel lighter, wheel life of up to 3 to 4 years; Shougang, Anshan Iron and Steel are medium, the wheel life of about a year; Baotou , Wuhan Iron and Steel and more serious, the average wheel life of less than one year, six months or so. Benxi steel clamp tong just put into operation soon, there is no overhaul records. The car chewed the road generally worse than the cart; especially the Daye Steel Works, carts chewed the best way, but the car situation is the most serious in several major steel mills.