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1985年全国电动葫芦行业把研制防爆葫芦列为全行业“七五”期间的工作重点。黑龙江省机械厅委托富锦起重设备厂和省防爆电机电器开发中心,联合设计,研制了BCDⅡCT4隔爆型电动葫芦。该电动葫芦的防爆部件包括BZD22-4与BZDY11-4隔爆型锥型转子电动机、BXLD隔爆型控制箱、BLA10-1隔爆型控制按钮、BLX隔爆型断火限位器。黑龙江省
In 1985 the national electric hoist industry to develop explosion-proof hoist as the entire industry, “Seventh Five-Year” period of focus. Heilongjiang Provincial Department of Machinery commissioned Fujin lifting equipment factory and the provincial explosion-proof electrical and electronic equipment development center, joint design, developed a BCD Ⅱ CT4 flameproof electric hoist. The components of the electric hoist include BZD22-4 and BZDY11-4 explosion-proof cone-type rotor motor, BXLD explosion-proof control box, BLA10-1 explosion-proof control button, BLX explosion-proof fire limiter. Heilongjiang Province