is the main load-bearing component of the electric hoist, and it mainly has two forms: single 훅 and double 훅.
Single 훅: It is a commonly used 훅 with simple structure and convenient use. NSmaterial is generally forged from 20# high-quality carbon steel or 20Mn, and the maximum lifting weight is not more than 80 tons.
Double 훅s: Double 훅s are often used when the lifting weight is large, and the force is even and symmetrical. NSmaterial is generally forged from 20# high-quality carbon steel or 20Mn. Usually, double 훅s are used for lifting equipment larger than 80 tons.
NSlaminated 훅 is riveted by cutting and forming multiple steel plates. Since the 훅 plate will not break at the same time, the working reliability is better than that of the integral forged 훅
. NSdisadvantage is that the weight and size are larger.
NSscrap standard of 훅
:NS훅 is cracked; the dangerous section wears up to 10% of the original size; the opening degree is increased by 15% than the original size; the torsion deformation exceeds 10 degrees, the disadvantage is that the weight and size are large.
NS훅 should be scrapped when one of the following situations occurs: 1. Crack; 2. Dangerous section wear reaches 10% of the original size; 3. NSopening degree is increased by 10% than the original size; 4. NStorsional deformation of the 훅 body exceeds 10; 5. Hanging NSdangerous section of the 훅 or the neck of the 훅 is plastically deformed; 6. NS훅 thread is corroded; 7. When the bushing of the 훅 is worn to 50% of the original size, the bushing should be replaced; 8. NSmandrel of the 훅 is worn to the original size At 5%, the mandrel should be replaced.