| Autor: |
Zabolotnyi, K. S., Zhupiiev, O. L., Sosnina, Ye. M. |
| Předmět: |
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| Zdroj: |
Scientific Bulletin of National Mining University; 2012, Issue 1, p82-87, 6p |
| Abstrakt: |
Domestic mine winders in comparison to foreign analogues weight more because of different reinforcements and have shorter operation life. Thus, study of the deflected mode is an urgent research issue. Mine winder with split drum has two parts on one cylinder for winding of two ropes on it. All possible reinforcements should be located inside the drum in order to ensure free move of the rope on its surface. Thus, research of the influence of different kinds of reinforcement on deflected mode of mine winder drum is required. Load level is important for the research. The load can be either axis-symmetrical or non-symmetrical. The load of first type is the winded rope pressure. The second type of the load includes the load on the break area during emergency or operating mode of braking, concentrated forces of winded and unwinded ropes, own weight of the drum with winded rope and centrifugal force. It was determined that non-symmetrical load influences a lot on deflected mode of the drum and the calculations become more difficult. It is recommended to use only the rope pressure on drum ring considering the rate of tension decrease in the winded rope. It is necessary to determine the most rational schema of the winded rope pressure on the drum ring, because it is possible not to take into account rate of tension decrease in the winded rope. In the process of computer modeling of the mine winder drum it is required to pay attention to some welding connections created without edge processing, meaning that it was made with poor penetration of joint root, and to study its influence on deflected mode of the drum. Taking into account mentioned above it is necessary to give recommendations regarding improvement of operation life of the mine winder drum. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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