The structural characteristics of the roller crusher

The roller crusher is composed of crushing roller, adjusting device, spring safety device, transmission device and frame.

Broken Roll:The crusher of the roller crusher is a parallel rotating device on the horizontal axis, which is the main working mechanism of the roller crusher. One of the roller bearings is movable, the other stick bearing is fixed, broken roll is the shaft, wheel and roller composition. The roller shaft is engaged with the hub of the tapered surface, and the roller is fixed on the hub, with three tapered arcs, which are fixed together by means of a bolt nut. Because the roll is in direct contact with the ore, it requires frequent replacement and is generally made of high manganese steel or special carbon steel (chrome steel, chrome manganese steel, etc.) with good wear resistance.

Adjustment device:The adjustment device for the roller crusher is used to adjust the size of the gap between the two crushing rollers ( the discharge port) by increasing or decreasing the number of spacers between the two roller bearings or by using the worm adjustment mechanism Of this, to control the size of broken products.

Spring safety device:The spring safety of the roller crusher is a very important part of the roller crusher, spring tightness, the roller crusher on the normal work and overload protection has a very important role. When the roller crusher is in normal operation, the spring pressure should be able to balance the force generated between the two rollers to maintain the gap between the discharge port and make the product grain size uniform. When the roller crusher into the non-broken objects, the spring should be compressed, forcing the movable crushing roller lateral movement, the discharge port width increases, to ensure that the machine will not be damaged. Non-crushed objects are removed, the spring restores the original state, the machine as usual work. In the process of crusher, the insurance spring is always in a vibrating state, so the spring is easy to fatigue damage, must always check, regular replacement.

transmission:The roller crusher's drive is the motor through the V-belt (or gear reduction device) and a pair of long gears, driving the two crushing rollers to do the opposite rotation. The gear is a specially designed standard long tooth, when the roller crusher into the non-broken objects, the distance between the two rollers will change, then the long gear can still ensure normal engagement. However, this long gear is difficult to manufacture, often stuck or broken work, gear repair is also very difficult, and the work of noise. Therefore, the long gear transmission is mainly used for low-speed roller crusher, the roller surface of the peripheral speed of less than 3m / s. Rotors with a higher number of revolutions (greater than 4 m / s) often use separate motors to drive the two rollers separately, requiring two motors (or two sets of decelerators) to be installed.

Frame:The roller crusher frame is generally cast iron cast, can also be welded or riveted steel, requiring the rack structure must be strong. Roller crusher in recent years, the development of slow, but in the adjustment of the machine discharge and insurance use of hydraulic devices, and the emergence of Ding Multi roll crusher (such as four-roll crusher). Four-roll crusher is actually a combination of the roller crusher, by the same size of the two pairs of roller machine in series, the structure and the light side of the roller machine is roughly the same. This pair of roller crushers, is the use of two motors through the belt or gear reduction device to achieve the machine drive.