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一九八六年五月,中国机械设备进出口总公司和天水风动工具厂派出的液压履带式凿岩钻车合同执行小组,在瑞典考察时,看到了Sandvik钎具公司新近投入小批量生产的、适用于露天深孔凿岩和梯段凿岩的新型钎杆。这种新型钎杆最显著的优点是:钻孔速度快,钻孔的直线性好,操作简便(上、卸钎杆)。现将SPEEDROD(?)介绍如下。 SPEEDROD(?)是瑞典Sandvik钎具公司和Atlas Copc0公司最新研制成功的新产品(已登记专利)。这种新型钎杆与普通钎杆不同的是,它一端带阳螺纹,另一端为阴螺纹。这种结构实质上就是将接杆套与钎杆合并成为一体,取消了单独的接杆套(如
In May 1986, the Executive Team of Hydraulic Crawler Rock Drilling Rig, dispatched by China National Machinery and Equipment Import and Export Corporation and Tianshui Fengdong Power Tools Factory, saw during the inspection in Sweden that Sandvik Soldering Equipment Co., Ltd. was newly put into small-batch production Of the new drill rod for open-hole deep hole rock drilling and step rock drilling. This new type of drill rod the most significant advantages are: drilling speed, drilling straightness, easy to operate (on and off the drill rod). SPEEDROD (?) Is now described below. SPEEDROD (?) Is a new product (registered patent) newly developed by Sandvik Soldering Company of Sweden and Atlas Copc0 Company. The difference between this new type of drill rod and ordinary drill rod is that it has a male thread on one end and a female thread on the other end. This structure is essentially the rod sleeve and drill rod merged into one, eliminating the separate rod sleeve (such as