Pipeline threading tractor

The invention provides a pipeline threading tractor. The tractor comprises a central tractor body and two driving wheel trains which are arranged on the central tractor body in a front-back manner andare in rolling fit with the inner wall of a pipeline, wherein each driving wheel train comprises three driving wheel sets; and the three driving wheel sets are arranged on the central tractor body ina positive star shape in the radial direction by taking the central tractor body as a center. According to the technical scheme, the threading operation quality and the operation efficiency of a traction line are greatly improved, and the operation cost is greatly reduced; and the pipeline threading tractor has the technical characteristics of small size and light weight. 本发明提供了一种管道穿线牵引车，本牵引车由中心车体和前、后设置在中心车体的与管道内壁滚动配合的两驱动轮系构成，每一驱动轮系包括三驱动轮组，三驱动轮组以中心车体为中心、径向呈正星形位安装在中心车体上。本技术方案大大提高了牵引线穿线作业质量和作业效率，大大降低了作业成本，而且还具有体积小巧、重量轻的技术特点。