Combined multipurpose scraper knife and bulldozer

The utility model discloses a combined multipurpose scraper knife and a bulldozer, the combined multipurpose scraper knife comprises a straight inclined shovel, the straight inclined shovel comprises a support assembly and a straight inclined shovel knife head connected with the support assembly, and the top of the straight inclined shovel knife head is provided with a mounting seat; and the grating is arranged at the top of the straight-inclined scraper knife head and comprises a connecting frame and a plurality of grid bars which are arranged on the connecting frame at intervals, and the connecting frame is detachably connected with the mounting base. The combined multipurpose scraper knife can adapt to two different working conditions, namely, one scraper knife can replace a straight inclined shovel and a sanitation shovel, the configuration cost is greatly low, and therefore the use cost is reduced, the grating is convenient to disassemble and assemble, and the working efficiency of the bulldozer is impro