Excavator tipping and other accidents are unavoidable in extreme working environments, but how to avoid accidents should be studied.
After an excavator tipping accident, a better solution plan is to restore the excavator as soon as possible. However, due to the natural environment and its machinery and equipment difficulties, it is usually impossible to immediately guarantee the restoration of the excavator parts. Everyone knows that in an excavator tipping accident, in addition to visible bending, damage, deformation and other problems, there are also some potential problems that cannot be seen and distinguished, leaving a safety risk for the excavator. Failure to detect the failure immediately will result in secondary common failures, leading to greater damage. So when there is a problem with the excavator, the first thing we think of should be to go to the nearby excavator repair shop.
Difficult problems of excavator tipping accidents:
1. The parts are deformed, damaged, or cracked.
2. The pipe parts are bent or damaged, and gear oil, fuel, and grease flow out.
3. It cannot be reversed. The changes of the side components (such as batteries, cooling towers) cause invalidation.
4. Deformation and distortion of sheet metal cover and support frame in automobile cab.
5. Compressive damage of shell parts.
6. Damage to parts in the cooling tower.
7. The destruction of other external notes (such as filter elements).
8. The destructiveness of the slewing bearing member is invalid.
9. Damage caused by short-term operation of an engine that has not been shut down immediately under a tipping situation.
When the excavator is tipped over an hour or so, no matter how inconvenient, you must solve it carefully according to the tipping position of the excavator to remove the fuel and grease entering the engine cylinder to prevent it from causing the engine piston to move. The fluid cushion that cannot be reduced causes damage to the crank and connecting rod mechanism of the engine.
On some types of engine crankshafts, I have personally experienced that not only did the fluid cushion cause the crankshaft to bend and the cylinder compression force was not enough, but even the crankshaft was damaged by the bending and got rid of the cylinder block. A large number of crankshafts are severely bent, but they endanger the temperature in the cylinder at the end of the engine's reduced stroke schedule, resulting in thicker smoke when the engine starts, and the cylinder load rate is not enough. The cylinder can be broken to determine the difficult cylinder, but the fuel system software is removed Common failures of parts failure.
Summary: The older engine crank and connecting rod mechanism has high compressive strength, and it is not prone to common failures of crankshaft bending caused by the liquid cushion above the piston rod. However, the excavator that will tip over cannot be started after being restored, and the engine is manually rotated. , You will encounter a situation where the piston rod of a certain cylinder cannot be turned over to shrink the top dead center, which is also caused by the liquid cushion. Therefore, when solving the problem of overturning accidents of excavators, we must carefully analyze the characteristics of the accident and the potential safety hazards that will occur, and not be paralyzed.
