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我矿1970年从日本进口的BTD-ICC型空压机(功率190千瓦、排气量42.9米~3/分)。经多年使用,曲轴磨损严重,需要进行检修,但由于对轮和曲轴是过盈配合,难以取下,曾使用150吨压力也无济于事。后应用爆破法将空压机曲轴压出,效果良好。具体做法如下。将曲轴立放在螺旋压力机下(见图),用120×100毫米枕木将对轮垫起,使曲轴处于悬空状态。在益轴直径为125毫米的轴头上垫放一厚度为30毫米、孔径为122毫米的铁板,再在其上放置一个直径为122毫米、高70毫米、重750克的2~#岩石炸药圆柱药包(该药包自制
I mine 1970 imported from Japan BTD-ICC-type air compressor (power 190 kW, exhaust 42.9 m ~ 3 / min). After many years of use, the crankshaft is worn seriously and needs to be overhaul. However, due to the interference fit of the wheel and the crankshaft, it is hard to remove the pressure of 150 tons. Blasting method after the air compressor crankshaft out, the effect is good. Specific practices are as follows. Place the crankshaft on a screw press (see photo) and cushion the wheel with a 120 × 100 mm sleeper so that the crankshaft is left floating. On a shaft with a shaft diameter of 125 mm, an iron plate with a thickness of 30 mm and a hole diameter of 122 mm was placed on a shaft head having a diameter of 122 mm, a height of 70 mm and a weight of 750 g, Explosives cylindrical kits (the kits made