Steel structure beam column quick-mounting joint and mounting method thereof

The invention relates to the field of steel structure installation, and particularly discloses a steel structure beam column fast installation joint and an installation method.The steel structure beam column fast installation joint comprises an upper clamping and fixing assembly and a lower clamping and fixing assembly which are installed at the end of a cross beam, and a first fixed installation assembly and a second fixed installation assembly which are fixedly installed on a stand column; the upper clamping and fixing assembly clamps and fixes the end of an upper cross beam plate, the lower clamping and fixing assembly clamps and fixes the end of a lower cross beam plate, and the end of the upper cross beam plate is rapidly connected with the first fixing and installing assembly installed on the stand column through the upper clamping and fixing assembly. And the end part of the lower cross beam plate is quickly connected with the second fixing and mounting assembly mounted on the upright post through the