Rod end joint bearing vibration is very sensitive to the damage of rod end joint bearing, such as peeling, indentation, rust, crack, abrasion, etc., will be reflected in the rod end joint bearing vibration measurement. Therefore, by using a special rod end joint bearing vibration measuring device (frequency analyzer, etc.), the magnitude of the vibration can be measured, and the specific abnormal situation cannot be inferred through the frequency division. The measured value depends on the use condition of the rod end joint bearing or The sensor installation location is different, so it is necessary to analyze and compare the measured value of each machine in advance to determine the judgment standard.
The temperature of the rod end joint bearing can generally be estimated with the temperature of the outdoor surface. It is more appropriate if the oil hole can be used to directly measure the temperature of the rod end joint bearing outer ring. Generally, the temperature of the rod end joint bearing slowly rises with the operation, and reaches a stable state after 1-2 hours. The normal temperature varies with the heat capacity, heat dissipation, speed and load of the machine. If the lubrication and installation parts are suitable, the temperature will rise sharply and abnormally high temperature will occur. At this time, the operation must be stopped, and necessary precautions must be taken. The working temperature of the rod end joint bearing can be monitored at any time by using a thermal sensor, and the temperature exceeds the regulation. Automatically alarm or stop when the value is set to prevent the occurrence of combustion shaft accidents.
installation and removal
1. Where the press is lacking or cannot be used, the end rod joint bearing can be installed with an assembly sleeve and a small hammer. The hammering force should be evenly transmitted to the entire circumference of the end face of the end rod joint bearing ring, so the assembly sleeve The end face hit by the hammer should be made into a spherical shape.
2. The force required to install the rod end joint bearing is related to the size of the joint bearing and the size of the matching interference. For medium or large joint bearings with large interference, the hot-fitting method is commonly used, and the end rod joint bearing is hot-fitted. Or put the separable joint bearing ring into an oil tank or a special heater to evenly heat to 80-100 degree , not more than 100 degree .
3. Hot-fitting joint bearings requires skilled operation skills. When the joint bearing is taken out from the heating oil tank or heater, immediately wipe off the oil and attachments on the joint bearing surface with a clean cloth (note that cotton yarn cannot be used), and then place it in front of the mating surface. The joint bearing should be pushed to the place against the shaft shoulder. Always push it tightly during the cooling process, or use a small hammer to tap the joint bearing through the assembly sleeve to make it tight. When installing the end rod joint bearing, rotate the joint bearing slightly to avoid The installation is overturned or stuck.
4. When the outer ring of the end rod joint bearing is tightly fitted with the shell hole, the shell can be heated and then installed into the joint bearing, especially the light metal joint bearing. During the tight fitting process, the outer ring may be pressed In this case, the end rod joint bearing should be heated first.
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