Roll spacing adjusting device for roll crusher

The utility model discloses a roll spacing adjusting device for roll crusher, including the movable roll chock of movable mounting in the frame, be equipped with the roll adjustment hydro -cylinder in the frame in the activity roll chock outside, roll adjustment hydro -cylinder tip is equipped with roll adjustment locating plate and through -hole, activity roll chock lateral part is equipped with spring preloading device with the roll adjustment locating plate relatively, press from both sides between roll adjustment locating plate and the spring preloading device and be equipped with the outer backing plate of roll spacing regulation, activity roll chock's opposite side is equipped with the roll adjustment backup pad, it has the lead screw to run through roll adjustment backup pad threaded connection, press from both sides between roll adjustment backup pad and the activity roll chock and be equipped with the interior backing plate of roll spacing regulation, the pretightning force of the ejector pin length