Mining device and walking device thereof

The invention discloses a walking device for a mining device, which comprises a bracket body (1) and a caterpillar (2) which is arranged on the outer circle of the bracket body (1), and also comprises a pin-board part (1) which is installed on the bracket body (1), wherein the lower end of the pin-board part is selectively inserted into a roadway soleplate. When the coal mining device slides or sinks, the pin-board part can be inserted into the roadway soleplate so as to increase the grasping force of the walking device and the attachment force of the soleplate, so the sliding or sinking device can be rapidly moved out of the accident position so as to improve the working efficiency of the mining machine and to reduce the waste of the resource and the labor. The invention also discloses amining device comprising the walking device.