Roller crusher, also known as double roll crusher, for mineral processing, chemical, cement, refractories, abrasives, building materials industry in the crushing of high, medium hardness and rock below the ore for use, especially in the construction materials Industrial production in melon and green bean rice and other stone products, have more excellent than the average effect of broken machinery. 
 Roller crusher working principle and structure 
 1, the series of roll crusher mainly composed by the roller, roller support bearings, clamping and adjusting devices and drive components. 
 2, the expected size of the adjustment: between two rollers or pads with wedge adjustment device, the top wedge-shaped device with the adjustment bolt, when the adjustment bolt to pull up the wedge, the wedge top of the active roller away from the fixed wheel, two roller gap is larger, the larger particle size, when the wedge down, the activities in the Spring-loaded roller under the action of two gap becomes smaller, the smaller particle size. Spacer device is through changes in the quantity or thickness shims to adjust the size of the particle size, increase the gasket when the roll gap when the two larger, as when two roller pads to reduce the gap becomes smaller, the smaller particle size . 
 3, the drive mechanism is composed of two electric motors through V-belt drive to the sheave on the drag roller, according to the relative direction rotation. In the broken material, the material from the inlet through the roller, the rolling and broken, broken after the product discharged from the chassis below. 
 4, for safety, drive part of the roll crusher according to the actual situation should be self-installed security cover.