Apparatus for transporting a load from a first to a second level includes means for maintaining the load carrier in a predetermined rotational position. The means includes a motor to rotate the load carrier relative to the frame. The apparatus includes an emergency rotation blocking arrangement having a first braking member rigidly connected to the frame or load carrier, a second braking member rigidly connected to the other of the frame and load carrier, a third braking member between the first and second braking members, and a movable retaining member which holds the third braking member and is movable relative to the second braking member. In braking mode the retaining member moves relative to the second braking member to move the third braking member to engage the primary and secondary braking surface and block rotation of the second braking member in a tangential direction relative to the first braking member.