Movable jaw polishing and grinding device of jaw crusher

The utility model belongs to the technical field of movable jaw machining equipment, and particularly provides a movable jaw polishing and grinding device of a jaw crusher. The polishing and grinding device mainly comprises a base, a stand column, a cross beam and a grinding mechanism, and the stand column comprises a column body, an arc-shaped sliding groove, an arc-shaped sliding block, a feeding oil cylinder, a supporting shovel, a driving gear, a power mechanism, a lifting supporting plate and a lifting oil cylinder. According to the polishing and grinding device, through the arc-shaped mechanisms assembled on the stand columns on the two sides, adjustment work of the placing angle of the movable jaw can be completed on the premise that external lifting equipment such as a lifting appliance is not called, the problem that the lifting appliance needs to be called to lift a workpiece again when the workpiece is rotated is solved, and the rotating efficiency is far higher than the lifting efficiency of the l