Protecting mechanism of mobile forestry crusher

The invention discloses a protecting mechanism of a mobile forestry crusher. The protecting mechanism comprises a mounting plate, a fixed hole, a protecting case, a top frame, a column, a feeding structure, a protecting rack, a power supply line and a control switch. By arranging the feeding structure optimally and taking a driving motor as a power source, an auger rotates by means of deceleratingclearance fit of a semi-gear and a gear, so that a material is guided by the rotating auger. An ejector piece ejects to push the material while the auger rotates to prevent the material from being stacked, so that the material is crushed normally. When a tension spring is pulled to the longest state, a left side surface of a baffle plate is attached to the inner wall of a housing, so that the material is fed and processed conveniently. When the tension spring shrinks to the smallest state, the top end surface of the baffle plate is in contact with a rectangular sheet, so that fragments are prevented from splashing, a