Pipeline fixer

The utility model discloses a pipeline fixer which comprises two end part mounting plates, a fixed sliding rod is fixedly arranged in one end part mounting plate, a bidirectional threaded rod is rotatably connected in the other end part mounting plate, two symmetrical fixed vertical plates are connected to the outer surface of the fixed sliding rod in a sliding manner, and the two symmetrical fixed vertical plates are connected to the outer surface of the bidirectional threaded rod in a sliding manner. And the fixed vertical plate is in threaded connection with the two-way threaded rod, a first rotating rod is rotationally connected to the interior of one end mounting plate, and a first bevel gear is fixedly arranged on the front end face of the first rotating rod. Through the design, under the action of a first rotating rod, a first bevel gear, a second bevel gear and a bidirectional threaded rod, two fixed vertical plates can move in opposite directions, so that fixed clamping blocks on the fixed vertical p