Fixture for building construction

The utility model discloses a clamp for building construction. Including a housing, a bearing is mounted in the middle of one side of the interior of the shell; and a second rotating shaft matched with the bearing is arranged in the bearing, a worm is installed on one side of the second rotating shaft and located in the shell, the side, away from the worm, of the second rotating shaft extends outof the shell, and a second grip is installed on the side, away from the worm, of the second rotating shaft. According to the device, materials are clamped through mutual cooperation of the second grip, the second rotating shaft, the worm, the worm wheel, the first rotating shaft, the first hinge plate, the second hinge plate, the third hinge plate, the mounting bin and the clamping plate; clampingis stable, through mutual cooperation of the first grip, the lead screw shaft, the lead screw sleeve, the L-shaped inserting rod, the clamping plate and the inserting hole, the clamping plate can bereplaced conveniently, the