Technical specification

- inlet size - 1000 mm x 630 mm
- max. grain size of the feed - below the inlet size
- outlet slot adjustment scope - 80-250 mm
- power requirement - 75 kW
- estimate operational capacity - 50-150 Mg/h (depending on the type of crushed material)
- crusher's total mass without the drive - 18350 kg
- general dimensions without the drive - ~2850x2010x2480 [mm] (length/width/height)



TECHNICAL DESCRIPTION


General design

The crusher is composed of 2 main units: the body and the pitman; Crusher's body - fully welded, the crusher's body has a ribbed design capable of enduring high load during operation. Mounted on the front wall of the body is a fixed crushing jaw attached to the wall using lateral protective wedges. The jaw is symmetrical – when the bottom part wears down, the jaw can be rotated, extending its runtime. Pitman - also welded, properly ribbed due to the need to endure high load during operation. The pendulum is mounted on an eccentric rotary shaft using two barrel bearings, while the shaft itself is mounted using the same barrel bearings in the body. The bearings in the machine's body are mounted on the main shaft using conical expansion anchors. To facilitate the deinstallation of the pendulum bearings, the main shaft has axial openings for pressurized hydraulic oil injection. The space, limited by two jaws, a fixed and moving jaw, together with lateral protective wedges, creates a chamber where the material is crushed, tapered toward the bottom. Mounted in the bearing strips of the pendulum and body is an expansion plate which also serves the role of a fuse. The eccentric tube, pendulum and expansion plates form the kinematic system which converts the operational motion of the rotating eccentric tube into the swinging motion of the moving jaw. A flywheel is mounted on the necks of the eccentric tube using clamping devices. The wheel, with carved-in grooves for v-belts, is also used to transfer the torque of the motor. The crusher's drive propulsion is generated by the driving motor via belt and pulley transmission. Installed at the back of the body is a device for regulating the outlet slot. The rotating parts of the crushers and the belt transmission are secured by shields. The connecting rod's bearings and pendulums are lubricated with grease via grease fittings to which grease must be supplied manually using pumps. In some crusher models there are optional systems with a power-operated lubrication pump supplying lubricant to all lubrication points.

Description of operation

The drive motor's torque is transferred via a belt and pulley transmission, the eccentric tube and the expansion plate to the moving jaw, mounted on the pendulum. The fed material enters the crushing chamber when the outlet slot is set. Thus, the crushing operation is cyclic and occurs only when the pendulum is swinging forward. When the pendulum moves back, the crushed material falls out through the opened slot. The power delivered by the motor during this operation is accumulated by the flywheel in the form of kinetic energy. This energy is then emitted during the operation. Thus, even though the crushing operation is cyclic, the crusher functions smoothly, with no acceleration or significant fluctuation in power consumption. After the material is crushed, it falls through the outlet slot onto the receiving unit.If hard or metal parts, which cannot be crushed, enter the crushing chamber together with the feed, the toggle plate, i.e. the simplest and cheapest part, will be destroyed, securing other, more critical, parts from being damaged. The crusher can operate using one rotation direction, i.e. the top edge of the flywheel and the pulley should rotate in the direction of the fixed jaw.