Arch-breaking device and stock bin thereof

The invention relates to an arch-breaking device and a stock bin thereof. The arch-breaking device at least comprises a rotary shaft which is rotatably supported in the stock bin, and the rotary shaft is driven by a drive device to rotate in the stock bin; at least one arch-breaking unit is arranged on the rotary shaft; each arch-breaking unit comprises a spiral perturbator, the spiral perturbator comprises a spiral strip which is circled around the rotary shaft in a reducing mode, one end of the spiral strip is controlled to move along with the rotary shaft to form a drive end, the other end of the spiral strip is formed into a driven end, and the drive end drives the spiral strip to move; in a working state, the spiral perturbators generate arch-breaking perturbed force on materials in the stock bin through motion of the spiral strips in the materials. According to the arch-breaking device, an arch-breaking element is prevented from rigid damages in an arch-breaking motion process because of certain flexibility. Moreover, the arch-breaking device is provided with the stock bin with the arch-breaking units, so that efficient discharge of loose materials is facilitated.