Folding forepoling device of heading machine

The invention provides a folding forepoling device of a heading machine. The folding forepoling device comprises a pushing groove, a supporting beam and a shield. A pushing groove is formed in the supporting beam, sliding grooves are formed in the two sides of the pushing groove, sliding blocks are arranged on the two sides of the supporting beam and assembled in the sliding grooves, the two ends, away from the supporting beam, of the pushing groove are connected with the two ends of a pushing oil cylinder respectively, a lifting oil cylinder set is further hinged to the supporting beam, and the other end of the lifting oil cylinder set is hinged to the shield. By means of the three-section telescopic shield, the supporting area is greatly enlarged, a stable supporting platform is provided for the mine tunneling process, rock collapse, wall caving and other accidents are effectively prevented, the safety of tunneling operation is greatly improved, and a solid safety barrier is provided for operators. 本发明提供了一种