针对钢丝盘卷料退火存在的问题，对常用热处理炉提出技术改造措施；
To give technical transformation measures of heat-treatment furnace in general use, directed to the problems in wire coils annealing.
双阶梯卷筒是一种带有阶梯法兰盘和双阶梯截面的综合式卷筒，可在变幅机构的非工作区段使钢丝绳多层卷绕，以缩短卷筒长度；
Double step drum is an integral drum with stepwise flanges and double step sections. It allows the multiple layer rope winding in non-operating portion of luffing mechanism to make drum shorter.
它通过转动支架、固定绕线盘、大齿轮盘、固定盘、小齿轮和电 机等进行组合带动钢丝绳实现自动升降。
The utility model can drive a wire rope through the combination of a swinging mounting, a stationary wire spool, a gearwheel disk, a fixed tray, a pinion, a motor, etc. to attain automatic elevating.
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