Workpiece conveyance pallet and production line

A workpiece conveyance pallet comprising:

• a rest surface on which a workpiece is placed, and which is formed with first through hole and second through hole extending through the rest surface and arranged successively in a closing direction;
• and
• a clamping mechanism configured to clamp the workpiece placed on the rest surface,
• wherein the clamping mechanism comprises:
• a first claw and a second claw arranged upside of the rest surface so as to open and close, and configured to clamp the workpiece, at least one of the first claw and the second claw being movable with respect to the rest surface, the first claw including a first engagement section extending so as to pass through the first through hole to underside of the rest surface and the second claw including a second engagement section extending so as to pass through the second through hole to underside of the rest surface
• a biasing section configured to bias the at least one of the first claw and the second claw in the closing direction;
• and
• a movement restriction section positioned underside of the rest surface so as to be opposite to the first and second claws with respect to the rest surface, and configured to disengageably engage the first engagement section and the second engagement section when the first claw and the second claw are opened, wherein the movement restriction section is movable close to or away from the rest surface, between a restricting position where the movement restriction section engages the first engagement section and the second engagement section so as to restrict movement of the first claw and the second claw in the closing direction, and a disengaging position where the movement restriction section is disengaged from the first engagement section and the second engagement section so as to allow the at least one of the first claw and the second claw to move in the closing direction by an action of the biasing section.