how the girders 9 of the carrier frame 8 may have at the rear end a detachable guide 51 which can be fastened in a simple manner by lockable pins passing through holes 52 in parts of the girders 9 and members 51 which extend along one another if the girders 9 of the carrier frame 8 are displaced backwards onto the floor when the tipping bridge is tipped containers suitable for the purpose can slide by their front edges over the inclined top surfaces 51 39 of the guides 51 when they are lifted onto the vehicle for example by means of the hook 20 on the carrier arm 19 or by means of the hook 28 the rollers 14 at the rear of the carriage 13 can be guided over the surfaces 51 in the rearmost positions of the carriage in the case of some containers a horizontal cross member 53 is provided at the rear of the bottom face this member extending in the transverse direction over the girders 9 when the container is on the apparatus for this purpose the guides 51 can be removed and the bottom flange of the cross member 53 then slides into a slot 54 when the container is picked up a projecting part of the guide 51 fitting into this slot 54 which is open to receive the flange when the guide 51 is removed the rearmost rollers 14 can be displaced over the part 51 39 of the path from their.