Connector

The invention discloses a connector, and belongs to the technical field of oil gas well testing tools. An upper connecting body and a lower connecting body are included. The connector is characterizedin that the upper connecting body comprises an outer threaded section and a straight circular section, an axial hole is formed in the straight circular section and internally provided with a floatingclamp pin, the floating clamp pin sequentially comprises a boss section, a first big cylinder section and a first small cylinder section, the first big cylinder section is in penetrating connection with a limiting column, and the first small cylinder section is sleeved with an axial return spring; and the lower connecting body sequentially comprises a second big cylinder section, a second small cylinder section and a rotation head section, the second small cylinder section is provided with a radial installing hole, a groove is formed in the top of the rotation head section, a positioning pinis arranged in the radial i