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Jaw Crusher Troubleshooting
Symptom 1: The host suddenly stops (commonly known as: boring car). Reasons: 1) The discharge port is blocked, causing the full cavity to block the material; 2) The V-belt that drives the groove wheel is loose, causing the belt to slip; 3) The eccentric shaft tightening bushing is loose, causing no gap on both sides of the bearing housing of the frame. , the eccentric shaft is stuck and cannot be rotated; 4) the voltage of the working site is too low, the main machine encounters the large material, and is unable to break; 5) the bearing is damaged. Remedy: 1) Clear the discharge blockage to ensure unimpeded discharge; 2) Tighten or replace the V-belt; 3) Reinstall or replace the adapter bushing; 4) Adjust the voltage of the work site to match the host Operating voltage requirements; 5) replacement of bearings. Symptom 2: The main gear wheel and the moving machine are running normally, but the crushing work stops. Reasons: 1) The tension spring is broken; 2) The tie rod is broken; 3) The bracket is detached or broken. Remedy: 1) Replace the tension spring; 2) Replace the tie rod; 3) Reinstall or replace the bracket. Symptom 3: The output does not meet the factory standards. Reasons: 1) The hardness or toughness of the material to be crushed exceeds the range specified in the instruction manual; 2) The wiring position of the motor is reversed, the main unit is turned on and off (clockwise rotation), or the motor is connected in a delta connection. 3) The discharge port is smaller than the specified limit; 4) the jaw plate is displaced, the tooth top is opposite to the tooth tip; 5) the working site voltage is too low; 6) the gap between the moving jaw and the bearing is too large, so that the outer ring of the bearing rotates relative to each other. . Remedy: 1) Replace or increase the crusher ; 2) Change the motor wiring; 3) Adjust the discharge port to the nominal discharge opening specified in the manual and increase the crusher for fine crushing; 4) Check the tooth pitch of the tooth plate, such as If the standard does not meet the standard, the fascia shall be replaced, and the relative position of the fixed raft and the movable raft shall be adjusted to ensure that the top of the tooth is fixed to the root after the tooth root to prevent displacement; 5) increase the voltage of the work site to adapt it to the weight of the main machine. Load requirements; 6) Replace bearings or moving files. Symptom 4: There is a beating or crashing sound when working with the fixed jaw. Reasons: 1) The fastening bolts of the jaws are loose or dropped; 2) The discharge opening is too small, and the bottoms of the two jaws collide with each other. Remedy: 1) Set or match the bolts; 2) Adjust the discharge opening to ensure the correct clearance between the two jaws. Symptom 5: The bracket is broken. Reasons: 1) The main equipment is overloaded or larger than the size of the feed port; 2) there is non-crushed material entering the crushing chamber; 3) the bracket between the bracket and the bracket is not parallel, and there is deflection; 4) the casting is more serious Casting defects. Remedy: 1) Replace the bracket and control the feed size and prevent the host from overloading; 2) Replace the brackets and take measures to prevent non-crushed objects from entering the crushing chamber; 3) Replace the brackets and replace the worn brackets , correctly install the brackets; 4) replace the qualified brackets. Symptom 6: The spring breaks. Cause: The spring was not loosened when the discharge opening was adjusted. Remedy: Replace the spring. Symptom 7: Adjust the seat break. Reasons: 1) The brackets and brackets are purchased or modified by themselves, which do not meet the design requirements of the main engine factory; 2) the fixing bolts of the adjusting seat are loose; 3) the casting blocks have serious casting defects or welding defects. Remedy: 1) Replace the adjustment seat and replace the original bracket and bracket plate of the assembly main engine factory; 2) Replace the adjustment seat and adjust the seat bolt; 3) Replace the adjustment seat. Symptom 8: The eccentric shaft is bent or broken. Reasons: 1) During the lifting process of the main machine, the rollover occurs, so that the eccentric shaft is bent by one side; 2) the hardness of the crushed material exceeds the specification of the product; 3) the long-term super negative operation of the main machine; 4) the bracket does not conform to the standard, When the broken material enters the crushing chamber, it acts as a self-breaking protection; 5) The eccentric shaft heat treatment is improper, the stress is concentrated, causing short-term fracture.
Remedy: 1) Replace the new eccentric shaft and lift the main machine correctly; 2) Replace the new eccentric shaft, select the suitable crusher according to the compressive strength of the broken material; 3) Replace the new eccentric shaft, adjust the operation Load or replace the appropriate crusher; 4) Replace the new eccentric shaft, do not use the brackets and bracket pads that do not meet the design standards; 5) Replace the new eccentric shaft and use the heat-treated eccentric shaft. Symptom 9: Dynamic rupture. Reasons: 1) There are serious defects such as intensive pores in the casting; 2) Unqualified brackets and brackets are used. When the crusher is in strong impact, the brackets are not self-breaking; 3) moving in the rack Displacement occurs, the bottom end hits the frame side guard plate; 4) the tension spring tension is not replaced in time after the failure; 5) the discharge opening is less than the specified limit; 6) the feeding position is wrong, and the angle to one end or the lower hopper is too steep. Cause the material to directly hit the head. Remedy: 1) Replace the moving raft. 2) Replace the moving cymbal. At the same time, replace the original brackets and brackets produced by the main engine factory; 3) Replace the moving jaws. At the same time, properly install the eccentric shaft, bearing, tightening bushing and moving jaw, replace the damaged parts; 4) Replace the moving jaws. Replace the lever spring at the same time; 5) Replace the moving jaw. At the same time, adjust the discharge opening as required; 6) Replace the moving jaw. At the same time, the hopper is added to ensure that the material is even and stable, and it is divided into two sides from the middle. Symptom 10: The temperature rise in the frame housing or the moving jaw is too high. Reasons: 1) The bearing is broken or the oil is injected too much; 2) The oil hole is blocked, the oil is not added; 3) The position of the flywheel counterweight is deviated, the frame is beating; 4) The axial bushing of the bushing occurs. 5) bearing wear or cage damage, etc.; 6) non-bearing temperature rise, but the dynamic sealing sleeve and the end cover friction heating or the frame bearing seat double-embedded cover rotates together with the main shaft, friction and heat. Remedy: 1) According to the instructions, refuel on time; 2) Clean the oil hole and oil tank blockage; 3) Adjust the position of the flywheel counterweight; 4) Remove the bearing cap on the frame and lock the bushing And remove the flywheel or sheave, replace the new adapter bushing; 5) replace the bearing; 6) replace the end cap and the sealing sleeve, or loosen the upper bearing cap of the heating end of the frame bearing housing, with the fuse and the insert cover Press into the bearing housing groove, and then fix the bearing cover to eliminate the cover rotation. Symptom 11: The flywheel wheel swings axially to the left and right. Reasons: 1) The flywheel wheel hole, flat key or shaft wears and loosens; 2) Stone material is rolled into the inner side of the wheel, causing the flywheel wheel housing to crack; 3) Casting Defects; 4) The loosening sleeve of the flywheel is loose.
Remedy: 1) Wear the flat key, replace the flat key, or replace the eccentric shaft or the flywheel; 2) Add the flywheel guard and replace the eccentric shaft or the flywheel; 3) Replace the eccentric shaft or the sheave. 4) Re-tighten the tightening sleeve. Symptom 12: The rack is cracked. Reasons: 1) casting defects or welding quality defects; 2) use of unqualified brackets and brackets, when the crusher is in strong impact, the brackets are not self-breaking, causing the frame to crack; 3) fixing the seesaw Unfixed, long-term ups and downs, hitting the front frame of the rack, 4) the rigidity of the base of the base is poor or collapsed, the frame is beating; 5) the two bolts on the bearing cover are loose; 6 The fixed and movable jaws continue to be used after the tooth shape is worn; 7) The direction of the weight of the flywheel wheel is misaligned due to the eccentric shaft, the pin damage or the loosening of the sleeve. Remedy: 1) Remove the original crack defects, weld repair correction, replace the new frame if necessary; 2) Repair or replace the new frame, and replace the original bracket and bracket pad produced by the OEM; 3) Repair or Replace the new rack and fix the fixed bolts; 4) repair or replace the new rack, and tighten the rack foot bolts to correct the level and strengthen the foundation; 5) repair or replace the new rack, and Tighten the two bolts on the bearing cover; 6) Repair or replace the new frame, and replace the slab after it is worn out; 7) Repair or replace the new frame, and change the pin shaft or adjust the direction of the eccentric block, tightly swell Tight set. Symptom 13; a knocking sound is produced at the rear of the rack. Reasons: 1) The tie rod is not tightened, the toggle plate hits the moving jaw and the toggle pad of the adjustment seat; 2) the tie rod has friction with the hook of the lower part of the movable jaw; 3) the spring and the spring seat collide with each other. Remedy: 1) Tighten the tie rod; 2) Check if the spring tension is invalid. If it fails, replace the spring, tighten the rod or re-tighten the spring; 3) Install the spring seat in place and tighten the tie rod nut to the proper position. Symptom 14: The rack is beating heavily. Reasons: 1) Loose or broken anchor bolts; 2) Offset position of fly and sheave counterweights; 3) Unstable foundation of the main engine and no isolation measures.
Remedy: 1) Fix the anchor bolt or replace the broken bolt; 2) Remove the flywheel shaft end cover, loosen the fly, the groove wheel tightening sleeve bolt, adjust the position of the fly and the sheave counterweight, then Tightening the tightening bolts; 3) Strengthening the foundation, padding the sleepers or rubber.
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