How to diagnose mechanical failure

For judging the machine condition of the crusher, as a technician should pay attention to the following points:

1. Failure is not equal to equipment abnormality

Some people blindly believe that equipment abnormality is equal to machine failure. Here it is necessary to explain that the abnormal equipment is the process of equipment in operation, due to some problems with internal parts, affecting the normal work of the crusher, but it does not mean that the crusher can not run work. If the equipment is not maintained in time, it will easily turn into a fault. A fault is a defect in a part of the machine that prevents it from running or working at all, and this is a failure. Failure and equipment abnormalities are two different degrees of mechanical damage, the measures to be taken are also different, and therefore should not be confused.

2. Diagnostic techniques and methods of failure

There are many technical methods of fault diagnosis, and these technical methods are constantly evolving. The following interview summarizes a few crusher diagnosis methods:

(1) Acoustic diagnosis method: The so-called acoustic diagnosis method is to detect the crusher by acoustic resistance, acoustic emission source and other sound equipment, and measure whether the sound intensity and sound frequency of its sound meet the requirements, so as to determine whether the equipment is damaged.

(2) vibration diagnosis method: vibration diagnosis method is to diagnose through mechanical vibration, it is to mechanical movement generated by the vibration and impact as the detection target, by detecting the frequency and speed of vibration, diagnose whether there is an abnormality in the operation of the equipment, if there is to be timely maintenance.

(3) temperature diagnosis method: temperature diagnosis method is to use the temperature difference of the machine temperature, radiation, heat emission as a detection target, check out the temperature size of the machine when working. If the temperature exceeds the design requirements, it should be checked in time to find the cause of overheating, followed by treatment to avoid further serious problems.

(4) Strength diagnostic method: Strength diagnostic method is to detect the strain force and torque of the machine and measure whether there is a problem with the strength of the machine force.

(5) Pressure diagnostic method: The pressure diagnostic method is to measure whether the pressure condition of the machine is good by checking the pulsation of the machine.

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