Method and a transfer trailer for transferring a heavy transferable work machine

A transfer trailer for transferring a heavy transferable work machine on a base, the transfer trailer arranged to be towed by a transfer vehicle, the transfer trailer comprising:

• a chassis including a first end and a support surface carried by the chassis for supporting a transferable work machine on the transfer trailer,
• an axle on the chassis and at least two wheels mounted on the axle, one on each side of the chassis,
• a brake mounted on the chassis and a hydraulic cylinder as an operating device for slowing the speed of the transfer trailer on a sloping base,
• said brake including:
• a brake surface being a wear component pressing directly on the base for continuous dragging against the base during an entire duration of the transfer throughout the towing,
• a sensor for measuring a control variable relating to controlling the speed of the transfer trailer,
• a proportional valve to control the magnitude of hydraulic flow to the hydraulic cylinder steplessly, and
• a control connected to the sensor to control the operation of the proportional valve for controlling the pressing of the brake surface against the base according to the measured control variable to control friction between the transfer trailer and the base to transfer the transfer trailer steplessly preventing an uncontrolled rise in the speed of the transfer trailer when being towed by the transfer vehicle.