Joint connecting structure

The utility model discloses a joint connecting structure, it is used for connecting steel pipe and hose, the drill bit comprises a joint head, the joint includes: the lining core, lining core one end cartridge is in on the hose, the other end of lining core is for stretching out the hose stretch out the end, stretch out and hold the external block round platform that has, coupling nut, coupling nut's one end is equipped with the inside protruding limiting round table who establishes, limiting round table and block round platform block, coupling nut's the other end is fixed on the steel pipe. This scheme is at the external nut of tip that connects, realizes its and being connected of steel pipe through the screw -thread fit form, connects reliably, when having avoided the hose adjustment, connects and breaks off with the steel pipe, influences the vehicle and normally works. External nut has made things convenient for the installation of hose on the steel pipe simultaneously. 本实用新型公开了种接头连接结构，其用于连接钢管和软管，包括接头，所述