What happens to the hammer crusher hammering a large piece of limestone?

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When the crusher equipment inevitably encounters materials with higher hardness when processing materials, what happens when the number of high-hardness materials enters the chamber of the hammer crusher?

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What happens to the hammer crusher hammering a large piece of limestone?

When the crusher equipment inevitably encounters materials with higher hardness when processing materials, what happens when the number of high-hardness materials enters the chamber of the hammer crusher?

Hammer shaft break

During the operation of the hammer crusher, the difficult material is encountered, and the hammer head retreats when the impact is broken. When the hammer head is separated from the material block, the hammer head rotates along the hammer shaft due to the centrifugal force of the rotor, and the hammer shaft is subjected to the frictional force of the hammer head. When the two sides of the hammer shaft are stable and reliable, the friction force is the main shearing force of the hammer shaft. When the number of large limestone is large, the retracting rotation motion of the hammer head is more frequent, and the friction force reaches the hammer shaft. The shearing limit causes the hammer shaft to break. The more hammers on the hammer shaft, the greater the chance of breaking.

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Hammer shaft breakage is generally not easy to find when the equipment is in normal operation. The phenomenon of this fault is generally:

Troubleshooting

Solution to avoid failure of hammer crusher equipment in production

Hammer crusher is one of the most used medium and fine crushing equipment in the sintered brick industry. The small hammer crusher is mainly used for crushing internal fuel, while the medium hammer crusher is used for crushing raw materials. The hammer crusher is driven by the movable hammer suspended from the hammer frame by the rotor to drive the hammer frame at high speed to impact the material with impact force to achieve the purpose of crushing. Due to the high speed rotation of the rotor, the dynamic balance of the hammer crusher is quite important. The most common failure of the hammer crusher in brick and tile factory is due to the vibration caused by the unbalanced rotor motion and the blockage of the sticking material of the hammerhead and the slit due to the high moisture content of the treated material. Eventually it will lead to a sudden increase in load, tripping, and even burning the motor. Therefore, in the commissioning and production operation of the hammer crusher, active preventive measures should be taken to prevent the above accidents.

Troubleshooting and troubleshooting

The measures commonly taken by hammer crushers to prevent accidents are as follows.

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1. Correct assembly of bearings and on-axis parts

The bearing is a part that supports the rotor shaft and allows it to rotate freely. When the bearing and the components on the shaft are not installed correctly, the rotor shaft will vibrate, which in turn will greatly reduce the service life of the bearing. A properly installed, properly used bearing can be used for two years or longer. When the installation is not correct and the use is unreasonable, the bearing life will be greatly shortened, so that it can only be used for $month or even less (some shortages) "months are damaged". Severe vibration can also damage the journal of the rotor shaft, causing it to be out of round and deformed.

2. The methods to prevent abnormal bearing damage and abnormal wear of the journal are as follows:

Equipment Configuration

Other Case