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GDM326 Shaft Hoists
- Time of issue:2021-08-11 10:14:11
Friction coefficient is the most important parameter of GDM326 SHAFT HOISTS FRICTION INSERTS, its size determines the lifting capacity, operation safety and stability of hoist. Different materials, different pairs of dual friction pairs, and different media between them reflect different friction coefficients.
The friction coefficient of GDM326 SHAFT HOISTS FRICTION INSERTS is usually measured in the laboratory when the steel wire rope and grease are determined. The friction coefficient of GDM326 SHAFT HOISTS FRICTION INSERTS has three values: test value, allowable value and design value. There is a certain relationship among test value, allowable value and design value. At present, the numerical relationship recognized by the design institute is: test value ≥ 1.1 times allowable value, allowable value ≥ 1.1 times design value.
At present, the test value of friction coefficient of domestic high friction gasket is about 0.28, so the allowable value is 0.25, and the design value is 0.23. After many years of industrial and mining experience and practice, it is generally believed that only when the test value is above 0.30, can the safe operation of the upgrade be guaranteed.
The function of GDM326 SHAFT HOISTS FRICTION INSERTS in the whole hoisting system is to ensure the friction coefficient and protect the wire rope. When choosing the liner, we should choose according to these two functions. According to the wear theory, when two kinds of objects with different hardness move relative, the wear amount of the object with smaller hardness is greater than that of the object with higher hardness. That is to say, during the operation of the hoist, the liner should be worn to effectively protect the hard wire rope.
From the macro point of view, the softer the GDM326 SHAFT HOISTS FRICTION INSERTS material is, the more favorable it is to the wire rope under the premise of ensuring the support strength. From the microscopic point of view, we can not have hard points in the liner material, if the liner material as a whole is super hard, it will cause wear on the wire rope as a whole. If there is only one hard point, it will cause local wear of the wire rope, which may be much worse than the overall wear, and it will directly cause defective fatigue of the wire rope.
In the actual industrial and mining work, we summed up the theory of "damage protection". In the industrial and mining investigation, we found that some users in the normal lifting, only one of the four padded rope grooves will have pitting corrosion and peeling, wear too fast and other rope grooves are completely normal. According to the industrial and mining experience, it is not difficult to speculate that the uneven stress has occurred in the operation of the steel wire rope. Since the problem is found, the next step must be to adjust, improve and protect the steel wire rope. Therefore, we can define the "damage protection" as follows: according to the GDM326 SHAFT HOISTS FRICTION INSERTS , we can find the problems in the operation of the wire rope, and the situation In order to ensure the scientific use of wire rope, the friction pad plays a role of damage protection in the process of operation.
The friction coefficient of GDM326 SHAFT HOISTS FRICTION INSERTS is not determined by a single liner. It needs high-quality steel wire rope and high-quality grease to play its role in the best state. Therefore, in order to achieve scientific, efficient and safe improvement, it is necessary to carefully select its partner while choosing a good liner.
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