Clamp, turnover manipulator and bricklaying robot

The invention relates to a clamp, a turnover manipulator and a bricklaying robot, and belongs to the technical field of building machinery. The clamp comprises a base plate, two first clamping parts and two second clamping parts. The two first clamping parts are arranged on the two sides of the base plate in the first direction, and at least one of the two first clamping parts is movably arranged on the base plate in the first direction; the first clamping part is used for clamping a target piece through the second clamping part; a guide assembly is arranged between the first clamping parts and the second clamping parts and used for guiding the second clamping parts to move in the direction away from the other first clamping part in the first direction relative to the corresponding first clamping parts when the two first clamping parts get close to each other in the first direction after the second clamping parts clamp the target piece. And the second clamping part moves towards the substrate along the second