Patent ID: 9475055
Filing Date: 2016-10-25
CPC Classification: B02C

Claim Text:
1. A jaw crusher with a double-crank-rocker mechanism, comprising: a frame; a fixed jaw plate; a movable jaw plate; a crank-rocker device; and a driving wheel; wherein said fixed jaw plate is mounted on said frame, said movable jaw plate is mounted on said crank-rocker device, said crank-rocker device is provided on said frame and is connected to said driving wheel; wherein said crank rocker device comprises: a front crank-rocker mechanism; and a rear crank-rocker mechanism; wherein said front crank-rocker mechanism comprises: a front swinging jaw, wherein said movable jaw plate is mounted on the front swinging jaw; and a front bracket; wherein said rear crank-rocker mechanism comprises: a rear swinging jaw; and a rear bracket; wherein said front swinging jaw and said rear swinging jaw are connected to an eccentric drive mechanism, said eccentric drive mechanism is connected to said driving wheel; a first end of said front bracket is pivotally connected to a bottom rear of said front swinging jaw, a second end of said front bracket is pivotally connected to a bottom front of said rear swinging jaw; a first end of said rear bracket is pivotally connected to a bottom rear of said rear swinging jaw, a second end of said rear bracket is pivotally connected to said frame; said movable jaw plate is mounted on said front swinging jaw and is corresponding to said fixed jaw plate for forming a crushing chamber; wherein said eccentric drive mechanism is a double-eccentric-shaft drive structure, comprising: a front eccentric driving shaft; and a rear eccentric driving shaft; wherein said front swinging jaw is connected to said front eccentric driving shaft, said rear swing jaw is connected to said rear eccentric driving shaft, said front eccentric driving shaft and said rear eccentric driving shaft are respectively connected to said driving wheel.