Technical specification

- inlet size - 200 mm x 300 mm
- max. grain size of the feed - below the inlet size
- slot adjustment scope - 10-30 mm
- installed power - 3 kW,
- estimate operational capacity - 100-300 kg/h (depending on the type of crushed material)
- crusher's mass with the drive - 250 kg
- general dimensions - ~970x520x860 [mm] (length/width/height)

TECHNICAL DESCRIPTION

General design

The crusher is composed of 3 main units: the body, the regulated pendulum and the driving pendulum;
Crusher's body - made of sufficiently thick metal sheets which, after being welded, create a light and rigid box structure.
Driving pendulum - welded, mounted on the rotary eccentric shaft using bearings, while the shaft is mounted using the same bearings in the body. The regulated pendulum is mounted on the axis inside the machine's body. The bottom part of the pendulum can be displaced using the cam, thanks to which the slot can be adjusted. The space, limited by two jaws, a fixed and moving jaw, together with lateral protective wedges, creates a chamber where the material is crushed, which is tapered toward the bottom. The eccentric tube and
the pendulum constitute the kinematic system translating the motion of the rotating eccentric tube into the swinging motion of the moving jaw. The upper part of the regulated pendulum is pressed using a rubber shock absorber which can be adjusted to change the pressing force or used to measure the crushing force after installing a measuring device in this place. A pulley is mounted on one of the eccentric tube's necks. The function of the pulley is to apply 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 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.

Description of operation

The drive motor's torque is transferred via a belt and pulley transmission and the eccentric tube to the moving jaw mounted on the pendulum. The fed material enters the crushing chamber when the outlet slot is set. The material to be crushed should be fed to the crusher in even portions. 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 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 into the container. The crusher can operate using one
rotation direction, i.e. the top edge of the the pulley should rotate in the direction of the fixed jaw.