ROLL-JAW CRUSHER WITH REDUCTION RATIO Russian patent published in 2012 - IPC B02C1/02 

FIELD: technological processes.

SUBSTANCE: invention relates to processing and benefication of minerals and can be used in mining, coal and construction industry when grinding and crushing raw materials. Roll-jaw crushers provide maximum crushing pressure on the ground material and are suitable for coarse and fine grinding. The roll-jaw crusher has a fixed and a movable jaw, with a depression on the latter and bent in the bottom part by an angle 145° towards the movable jaw. The axle of the articulated suspension of the movable jaw in its bottom part rests on sidewalls of the stand by bearings. The crusher also has an eccentric shaft, a connecting rod and spacing plates. The eccentric shaft is mounted on bearings in the stand of the bottom part of the crusher. Above the eccentric shaft there is a connecting rod having in the top part hinge joints for connection with spacing plates. The hinge joints provide compression and stretching forces. The spacing plates are also equipped with similar hinge joints on both ends connected with the movable jaw in its top part and with the frame of the crusher. The jaws are wide in the bottom part below the axle of the suspension of the movable jaw.

EFFECT: high degree of grinding and reduced load on the bearing of the eccentric shaft.

2 cl, 2 dwg