Jaw Crusher is a commonly used crushing equipment, widely used in mining, construction, highway and other industries. During the operation of jaw crusher, the loss of parts is an inevitable problem. Timely replacement of damaged parts is essential to ensure the normal operation of the equipment.
So, how to judge whether the parts of jaw crusher need to be replaced? It mainly includes the following aspects:
♦♦Appearance and operating environment inspection:
First, make a preliminary inspection of the appearance and operating environment of the jaw crusher. Observe whether the outer shell of the crusher has obvious deformation, cracks or rust;
Check whether each connection part is tight, loose or broken;
At the same time, pay attention to the operating environment around the crusher to see if there is dust, debris and other accumulations, which may affect the normal operation of the crusher.
♦♦Evaluation of the degree of wear of parts:
1. Jaw plate:
The jaw plate is the core component of the jaw crusher, and its degree of wear is directly related to the crushing effect and the operating stability of the equipment.
When checking the jaw plate, pay attention to the wear of the jaw teeth, such as whether the jaw teeth are broken, fallen off or severely worn, and whether there are uneven or severe wear marks on the surface of the jaw plate. When the jaw teeth are worn to a certain extent and cannot effectively crush the material, it is necessary to replace the new jaw plate in time.
2. Bearings and transmission parts:
Bearings and transmission parts are important transmission parts of the jaw crusher, and their operating status directly affects the overall performance of the crusher.
When checking the bearings, pay attention to the lubrication, operating sound and temperature of the bearings. If the bearing is not flexible, the sound is abnormal or the temperature is too high, it may be a manifestation of bearing wear or damage, and it needs to be replaced in time. At the same time, check the connection of the transmission parts to ensure smooth transmission and no abnormal vibration.
3. Eccentric shaft and flywheel:
The eccentric shaft and flywheel are key components of the jaw crusher, and their operating status is directly related to the crushing capacity and stability of the crusher.
When checking the eccentric shaft, pay attention to whether there are cracks, wear or deformation on its surface. The inspection of the flywheel mainly focuses on its balance and integrity. If the flywheel is unbalanced or severely worn, it should be replaced in time to avoid equipment failure.
♦♦Inspection of other vulnerable parts:
1. Liner:
The fixed jaw liner (tooth plate), movable jaw liner (tooth plate), and side liner (guard plate) of the jaw crusher are easy to wear. If they wear quickly, it will affect the size of the product.
When the liner is initially worn, the liner can be turned over and used. When the tooth plate is worn off by 3/5, the liner needs to be replaced; when the side liner is worn off by 2/5, it also needs to be replaced.
2. Toggle plate:
When the toggle plate is worn out quickly or broken, the stones in the crushing chamber need to be solved, the toggle plate that is worn out quickly or broken needs to be taken out, and the toggle plate on the movable jaw and the connecting rod needs to be checked for damage, and then a new thrust plate is replaced to make it gradually contact with the working surface of the toggle plate, and the degree of tension is tightened.
3. Shaft:
If the wear of the shaft is very small, it can be turned on a lathe just to repair its geometry. However, after several such treatments, if the journal size is 5% smaller than the original, turning is not allowed and a new shaft must be replaced.
Through the above methods, it is possible to effectively determine whether the jaw crusher parts need to be replaced to ensure the normal operation of the equipment and extend its service life.
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