Premature bearing failure analysis (1)
Premature bearing failure analysis (1)
PRODUCT
TAH wheel host chain tensioner adjusting screw fracture accident
by：Waxing
2020-11-13
TAH wheel host chain tensioner adjusting screw fracture accident - 2020
12 -
23'
The host model 】
b
W 6 l60mce【
The accident after 】
The wheel by the Pacific on his way back home, the host chain have abnormal sound in the box.
To slow down, stop inspection, found that the chain tensioner adjusting screw fracture, all caterpillar fixed screw loosening, caterpillar track damping rubber all off.
After provisional fixed measures, slow sailing back to home.
Found in the port of discharge in zhanjiang repair adjusting bolt serious bending;
End of shaft after grinding shaft into ellipse, axle housing and shaft neck gap has reached 19 mm.
【
The cause of the accident.
For shipyard manufacturing and installation quality problem, after the end of the shaft end and bushing wear serious, adjust the screw on the bending stress and fracture.
【
The accident lesson 】
1, improve the work sense of responsibility, strengthen the supervision of new production of ship or shop repair during the acceptance of work.
2, strengthening safety awareness, strictly in accordance with the requirements of the host specification, internal inspection on a regular basis.
Found defective equipment in time, in order to eliminate hidden dangers and prevent accidents.
（
Source: the home of seafarers)
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