Jaw type crushing device capable of easily adjusting gap and preventing material blockage

The utility model discloses a jaw type crushing device capable of easily adjusting a gap and preventing material blockage. The jaw type crushing device comprises a machine body right protective plate,a machine body left protective plate, a machine body rear plate, a jaw plate and a jaw plate gap adjusting structure, the jaw plates comprise a movable jaw plate and a static jaw plate; the jaw plategap adjusting structure comprises a threaded sleeve, a threaded rod, a connecting rod, a gap adjusting hand wheel, a support and an adjusting shaft. Wherein the screw rod is fixed with a rear plate of the machine body, the thread sleeve is connected with the screw rod, the thread sleeve is connected with the gap adjusting hand wheel and the support, the adjusting shaft is respectively connected with the support and the connecting rod, adjusting shaft via holes are formed in a left protective plate and a right protective plate of the machine body, and the adjusting shaft penetrates through a left plate and a right plat