subject: General troubles and solution of Jaw crusher [print this page] General troubles and solution of Jaw crusherGeneral troubles and solution of Jaw crusher
1 Main engine suddenly stops.
Reasons
1) The discharging open blocked with materials
2) Triangle belt of drive sheave is too loose, causing belt creep.
3) Eccentric sleeve looses, causing that there is no space in both sides of bearing seat of rack and eccentric shaft
4) The voltage in working space is too low that it can't crush when meeting large-block materials
5) The bearing shaft has been damaged
Repairing methods
1) Clear the blockage in the discharging open, making sure discharging flexible
2) Screw up or replace the triangle belt
3) Re-install or replace sleeves
4) Adjust the voltage in working space to adapt the voltage demand of main engine
5) Replace bearing shaft
2 The main engine slot and Jaw crusher rotate normally, but the crushing stop
Reasons
1) strain spring collapses
2) draw bar ruptures
3) bracket falls off or ruptures
Repairing methods
1) replace spring
2) replace draw bar
3) re-install or replace the brackets
3 The output can't reach original factory standard
Reasons:
1) The hardness or endurance of materials go beyond the range of instruction book
2) Electric motor connects inversely, the main engine works opposite(Jaw crusher rotates clockwise)or the electric's triangle connection is replaced by star connection
3) Discharging open is smaller than specified limit
4) Jaw plate moved ,the tops of the teeth opposite
5) The voltage of working space is too low
6) Movable Jaw plate and bearing shaft are wear that the break is too large that the outer ring of bearing happen relative rotation
Repairing methods
1) Replace or increase crushing material
2) Adjust the motor connection
3) Adjust discharging open to adapt the instruction book and increase the machines used in tiny crushing
4) Check stonebreaker's distance between each other, if not match the instruction book, replace the Jaw plate, adjusting the relative places between fixed and movable Jaw plates make sure that top of the tooth face the tooth root, then fixed, in case the shift and raising the voltage of working space to adapt the demand of main engine.
