Anti-skid device of ultra-thin coal seam coal mining machine

The utility model discloses an anti-skid device of an ultra-thin seam coal mining machine, which comprises a support, an anti-skid bar, a connecting block and an extension spring, the support is hinged with the bottom end of the anti-skid bar through a first pin shaft, and the support is fixed on a bottom supporting plate of the coal mining machine; the length of the anti-skid bar is required to be greater than the distance between the support and the coal seam ceiling; the connecting block is fixed at the tail part of the coal mining machine; and one end of the extension spring is connected with a bar body of the anti-skid bar through a second pin shaft. The other end is connected with the connecting block through a third pin shaft. When the coal mining machine additionally provided withthe anti-skid device advances, the top ends of the anti-skid bars are always in contact with a coal seam ceiling under the action of the extension springs; and when the coal mining machine suddenly slides down, the anti-skid