Container trailer assembly

Trailer assembly for transport of a container (2), the trailer comprising a tipping frame (4) connected to a trailer frame (6) with a hinge element (8) at a rear zone of the trailer frame (6). A tipping actuator (10) is connected to the trailer frame (6) and the tipping frame (4) for tilting the tipping frame (4) between a horizontal position and an inclined position. The tipping frame (4) comprises a conveyor system (12a) for moving the container (2) along a length of the tipping frame (4). The conveyor system (12a) comprises a load bearing surface (16) positioned above an upper surface of the tipping frame (4), the load bearing surface (16) being arranged at a fixed position along a predetermined length at the rear zone of the tipping frame (4) and being arranged to convey the container (2) while under load without bending in a load direction.