13号低碳中锰鋼鑄造車钩具备很多特点:它除了一些零件与原三号車钩通用外,主要是在三号車钩的基础上将横向扁尾銷改为竪向扁尾銷,避免了在牵引梁上开孔的弱点,并使整个钩体的尺寸合理化,使整套連緩装置的强度大大提高。 我段在一年多来共检修該型車钩三十多套中,发現除有两个因钩鎖鉄磨耗过甚而影 No. 13 low-carbon manganese steel cast iron coupler has many features: it except some of the parts with the original common car coupler, the main is in the third on the basis of the car coupler will be replaced by the horizontal flat-tailed flat vertical tail pin, to avoid Weak hole in the traction beam weakness, and to make the entire size of the hook body rationalization, so that even the whole package with a strong increase in the intensity of the device. I paragraph in more than a year overhaul the type of coupler more than thirty sets and found that in addition to two due to the hook lock wear even