Railway overhead line system cantilever base anti-falling pipe cap

The utility model relates to the technical field of railway catenaries, in particular to a railway catenary cantilever base anti-drop pipe cap which comprises two connected catenary pipe outer sleeves and anti-drop inner sleeves matched with the catenary pipe outer sleeves in a one-to-one correspondence mode. Each contact network pipe outer sleeve comprises a first connecting section, a first jacking section and a sleeving section, the sleeving sections sleeve the outer sides of the top ends of the first connecting sections, and the contact network pipe outer sleeves are connected through the corresponding sleeving sections; the anti-falling inner sleeve is used for enabling the corresponding first jacking section to form a flaring structure when the anti-falling inner sleeve is matched with the first connecting section, and the flaring end of the first jacking section and the sleeving groove are arranged in the same direction; the anti-falling inner sleeve is matched with the contact net pipe outer sleeve, s