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(Continued on page 40) The column members can be reinforced with an angled steel hoop or reinforced concrete shroud. Some important roof members can be reinforced with a lower chord-added prestressed tie rod or a steel beam slab unloading method to reduce the structural bearing capacity of the old building and achieve structural reinforcement.
3 The durability of the structure is related to the service life of the structure, and the durability of the structure affects the normal use and safety of the structure. In order to ensure the durability of the structure, it should be carefully designed in engineering design and construction, and the construction quality management should be well done. For components with different durability damage, timely repair and reinforcement methods should be adopted according to the specific conditions to improve the durability of the structure, ensure the safety of the structure and avoid engineering accidents.
(Continued from page 31) Add an appropriate amount of anti-wear additive to the oil. It is characterized by the formation of a strong composite protective film on the friction surface, which can replace the oil film as a friction surface protection. After use, the frictional resistance can be reduced, thereby reducing the temperature rise of the reducer.
Formulate a reasonable oil change cycle. According to the failure standard of the gear oil, combined with the operating conditions of the reducer, we have developed a reasonable oil change cycle. When the ambient temperature is low in winter, the oil is changed once in 6 months; when the temperature is higher in summer, the oil is changed once in 3 months.
Improve the sealing structure to prevent dust from contaminating oil.
The implementation of the above measures has achieved good results. Since we adopted the improvement measures in 1994, the lubrication of the gears of the reducer has been greatly improved, the wear of the tooth surface pitting corrosion is reduced by 80%, the service life of the gear is more than doubled, and the temperature rise of the reducer is controlled within 10C, thus improving the operation of the equipment. Security and stability.
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