The utility model provides a yarn section of thick bamboo mechanism is led to range upon range of formula, it is connected through the stand between the guide Agency of adjacent layer including the multiunit guide Agency of mutual stromatolite combination, guide Agency including pedestal, a yarn section of thick bamboo axle, the 2nd yarn section of thick bamboo axle, wherein, the pedestal is square, its top both ends are equipped with the caulking groove, the pedestal bottom is equipped with down the caulking groove, embed in the last caulking groove of lower floor's pedestal in the stand bottom, the gomphosis of stand top is in the lower caulking groove of upper pedestal, the spout that length direction was equipped with " protruding " font is followed at the pedestal top, a yarn section of thick bamboo axle, the 2nd yarn section of thick bamboo axle are installed on the pedestal by the spout symmetry. The utility model discloses adapt to the not yarn section of thick bamboo internal diameter of equidimension, effectively prevent the shortcoming that yarn section of thick bamboo internal diameter rocked when too big, then adorn the shortcoming of not advancing during the undersize.