Colliery underground ventilation structure convenient to it is fixed

The utility model discloses a colliery underground ventilation structure convenient to it is fixed, including positioning tooth and unable adjustment base, the lower extreme of positioning tooth is fixed with solid fixed pressing plate, and fixed pressing plate's downside is connected with the locating lever admittedly, the support main part is installed through first nut in the inner of locatinglever, and the outside of just supporting the main part is provided with fixed outer loop to first bolt is installed at the both ends of fixed outer loop, the inboard of fixed outer loop is connectedwith the ventilation pipe, and the outside of ventilation pipe installs the vent, the outside of supporting the main part is fixed with the connecting rod, and the front end of connecting rod is connected with the bracing piece through the second nut to the centre of bracing piece is provided with the through -hole, the inside of ventilation pipe is provided with the space bar, the inner outside of locating lever is fixed