Causes of U-bolt damage and methods to prevent fracture
Cause of U-bolt damage
After the U-bolt is loose, huge kinetic energy mv2 is generated.This huge kinetic energy directly affects the U-bolt and the equipment, causing the U-bolt to be damaged. After the U-bolt is damaged, the equipment cannot work in a normal state, further causing the equipment damage.
The U-bolt is damaged by the axial force, and the bolt is broken.
UU-shaped bolts subjected to radial force, the bolts are cut off, and the bolt holes are made oval.
Down's threads have both left-handed and right-handed threads. It can cooperate with both left-handed threads and right-handed threads. Use two nuts with different rotation directions for coupling. Nuts on the working support surface are called fastening nuts, and nuts on the non-supporting surface are called lock nuts. Pre-tighten the tightening nut before using, and then tighten the lock nut.
Under the condition of vibration and shock, the tightening nut tends to loosen, but because the loosening direction of the tightening nut is the tightening direction of the lock nut, the tightening of the lock nut just prevents the loosening of the tightening nut. As a result, the fastening nut cannot be loosened.
Four points to prevent U-bolts from breaking.
1. When assembling the connecting rod cover, use a torque wrench to tighten it according to the specified standards to prevent the torque from being too large or too small.
2. U-bolts produced by supporting plants are selected.
3. Every time you run 12000km for secondary maintenance, you should remove the engine oil pan and check the use of the engine bushing. If you find that the gap between individual bushings is too large, you should replace it. You should also replace the U-bolt at the same time. In normal operation, if you find that the engine is not running smoothly and there are abnormal noises, you should also stop and check in time.
4.The newly replaced U-bolts should be inspected during each maintenance.Pay attention to whether there are cracks or dents in the bolt head, guide part, and thread parts, and whether the tooth shape and pitch of the thread are abnormal.
The above is the introduction of the causes of U-bolt damage and the methods to prevent U-bolts from breaking. I hope everyone will understand the reasons of U-bolt damage and the methods to prevent bolts from breaking, which will be helpful to everyone.
