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The diesel intermediate gears are subjected to a large unbalanced force during operation, and the force will move outwards under the force. At the same time, due to the alternating load and impact vibration, it is easy to cause the intermediate gear carrier to break, the wire is detached or broken, the bearing cage is damaged, and the roller is detached. Observing the damage condition of the bracket, it is found that the fracture starts from the vicinity of the intermediate wheel and gradually develops in the direction of unbalanced resultant force, causing the stent to break. This shows that the imbalance of the intermediate gear is the main cause of its damage.
When the planting wire falls off, the Rongbei head is easy to cause the threaded snap or screw hole in the body to expand. In severe cases, the gear may fall off and the body may be damaged. After such a fault occurs, the repair is difficult, and the repair time of the household ladder is long, especially for the minor minor repair section. For the cause of the fault, the following measures can be taken to improve the intermediate gear.
The method of increasing the wire is used to increase the strength of the fastening bolt. Change the bolt of the original intermediate gear M16 to the bolt of M18 or M20 to increase the strength of the fastening bolt. On the one hand, it can avoid the failure caused by the cutting off, and at the same time reduce the additional vibration caused by insufficient strength and improve the gear and bearing. Life expectancy.
In the transmission gear train, a balance wheel is added to make the intermediate gears symmetrical, improve the stress state, eliminate the unbalanced force, and fundamentally solve the problem of the imbalance of the intermediate gears. This structure and the DF4 locomotive The intermediate gear of a diesel engine is similar. By adding a balance wheel, the force condition of the intermediate gear is improved, and the reliability of the work is improved.