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介绍了球１ 型、球２ 型、齿２ —１ 型和齿４ 型步进式清蜡器的工作原理、结构特点及优缺点。球型清蜡器的主要缺点是运动的可靠性差， 一旦钢球丧失锁紧功能， 将失去“步进足”的作用； 而齿型清蜡器的步进齿易破损及齿尖易刺伤油管内壁。为此， 提出改进措施：１ ．对球型步进式清蜡器采用带穿轴的小轮代替钢球，可使爬行器运动更可靠；２ ．对齿型步进式清蜡器，采用可胀紧金属环代替步进齿，金属环依靠抽油机的冲程力胀大后使爬行器固定，反冲程力使金属环缩小；３ ．将传感器装在换向器内，根据信号的时间间隔判断爬行器的运行速度及磨损等情况。
The working principle, structural characteristics, advantages and disadvantages of ball type 1, ball 2, tooth 2 -1 type and tooth type 4 walking wax cleaner are introduced. The main disadvantage of the ball-type waxer is the poor reliability of the movement. Once the ball loses the locking function, it will lose the function of “step-by-step”. However, the stepper tooth of the tooth-type waxer is easy to break and the tooth tip is easily punctured Tubing wall. To this end, proposed improvements: 1. The ball-type step-by-step wax cleaning device with a small round of the shaft instead of steel balls, can make the crawler movement more reliable; For the tooth-type step-by-step wax-cleaning device, a step-tight metal ring is used instead of the step-tooth, the metal ring is swelled by the stroke force of the pumping unit to fix the crawler, and the recoil force reduces the metal ring. The sensor installed in the commutator, according to the signal time interval to determine the crawler speed and wear and tear and so on.