起重机标定的额定起吊质量为吊钩自身质量与所吊物体质量之和。因此吊钩自身质量越小,起吊物体质量越大。当起升高度较高,钢丝绳较长时,吊钩下落需要克服较大的阻力,此时吊钩自身质量需增加,否则会出现空钩时吊钩无法自由下落问题。吊钩自身质量过大,势必会降低起重机的起吊质量。为此,我们根据市场需要,设计了可灵活调节自身质量的吊钩。1.传统结构传统的单倍率吊钩主要由基座、钩 The nominal lifting weight of the crane calibration is the sum of the quality of the hook and the mass of the suspended object. Therefore, the smaller the quality of the hook itself, the greater the quality of lifting objects. When the lifting height is high, the rope is longer, the hook needs to overcome the greater resistance to fall, then the quality of the hook needs to be increased, otherwise there will be an empty hook when the hook can not be free to fall. Hook itself is too large, it is bound to reduce the quality of crane lifting. To this end, according to market needs, we designed a flexible adjustment of their own quality hooks. 1. The traditional structure of the traditional single rate hook mainly by the base, hook