Rotary joint and crane pipe using same

The utility model discloses a rotary joint and a crane pipe applying the rotary joint, and the rotary joint comprises a first joint, a second joint, a third joint and a fourth joint, a connecting cavity is formed in the body, the first connector is fixedly connected to the upper end of the body, and the medium inlet is connected with the connecting cavity; the second connector is rotatably connected to the lower end of the body, a medium outlet is formed in the second connector, and the medium outlet is connected with the connecting cavity; the body is provided with an air inlet, the second connector is provided with an air outlet, and the air inlet is connected with the air outlet. The problem that in the prior art, when liquid hydrogen is loaded and unloaded, hydrogen in the front end filling connector is inconvenient to discharge can be solved. 本实用新型公开了一种旋转接头及应用旋转接头的鹤管，其中旋转接头包括：第一接头，在第一接头上设置有介质入口；本体，在本体内设置有连接腔，所述第一接头固定连接在本体的上端，所述介质入口与连接腔连接；第二接头，所述第二接头可转动地连接在本体的下端，在第二接头上设置有介质出口，所述介质出口与连接腔连接；所述本体上设置有进气口，第二接头