Fonctionnement du concasseur à mâchoires

Concasseurs à mâchoires are essential equipment in mining, quarrying, and aggregate processing, known for their high crushing capacity and versatility. Proper operation directly impacts performance, productivity, and lifespan. This guide outlines key operational best practices to maximize efficiency while minimizing downtime.

Key Components of a Jaw Crusher

• Frame – Forms the crusher’s structural foundation, supporting all moving parts.
• Arbre excentrique – Drives the movable jaw in a reciprocating motion to crush material.
• Motor & Belt Drive – Transmits power to the eccentric shaft via V-belts.
• Flywheel – Balances energy fluctuations for smoother operation.
• Movable & Fixed Jaw Plates – Replaceable wear parts responsible for material crushing.
• Plaque à bascule – Acts as a safety mechanism, breaking under excessive load to protect other components.
• Adjustment Mechanism – Regulates the discharge opening size to control product output.
• Système de lubrification – Ensures smooth operation by reducing friction in bearings and moving parts.
• Side guards 
• Toggle seat
• Return spring

Critical Operational Guidelines

1. Pre-Operation Checks
Before starting a jaw crusher:

• Inspect all components (belts, jaws, bolts) for wear or looseness.
• Check lubrication levels (eccentric shaft bearings, toggle plate).
• Ensure no residual material is left in the crushing chamber.

2. No Load Startup
The crusher needs to start up when there is no loading, after running for a while, gradually increase the ore feeding. If the crusher makes an unusual sound, it should stop running and find out the reasons.

3. Feeding
It is essential to keep a steady status of material feeding and processing; the crusher chamber cannot be allowed to be filled with stone material. Meanwhile, prevent irrelevant objects such as a drill or a shovel from entering the crusher.

4. Blockage Prevention & Clearing
Sometimes, a large rock plugs up the feeder mouth. In the event of a lock, rolling over the large stone makes the feeder mouth free at first. If blocking in the crusher chamber, it should stop feeding until the chamber is clear. For Your Attention, it is strictly that you use specialized tools to clear the obstruction instead of using your hand.

5. Lubrication
L'huile de lubrification contribue au fonctionnement régulier et efficace de la machine. De plus, la température du palier excentrique ne peut pas dépasser 600 °c.

6. Maintenance and Repair
Check the wear of the discharge mouth regularly, and adjust the size of the discharge port in time according to the wear condition. Besides, replace the wear parts on time.

Maintenance Schedule for Peak Performance

Final Recommendations

• Invest in high-quality wear parts (manganese steel jaws, durable toggle plates).
• Train operators on safe & efficient practices to minimize downtime.
• Follow a strict maintenance schedule to extend the crusher’s lifespan.

Trusted Jaw Crushers & Wear Parts from JXSC

Pour reliable matériel de broyage et durable wear parts, JXSC offers industry-leading solutions. Contact us for quotes on jaw crushers & customized crushing plants.