The invention provides a method and a device for measuring the weight of a load, which is displaced with a load lifting device over the edge of a raised loading surface and thus pulled onto the same or pushed down from the same, wherein during this operating process, in a support of the load lifting device loaded by the load, the force currently acting due to the displacement of the load is measured during the passage through a predetermined weighing window and the weight of the load is determined mathematically from the course thereof. Preferably, the load sensor is constructed as a tube which is equipped with two deformation sensors equipped essentially at right angles to one another.

A working equipment including a base; a movable arm; a hydraulic system including a hydraulic cylinder provided with a cylinder cavity a piston, and a piston rod, the piston dividing the cylinder cavity in a first chamber and a second chamber; and a load holding valve unit. A pressure measurement member is arranged to measure pressure of the hydraulic fluid in the second chamber during an outward movement procedure of the piston rod. A working equipment control system is arranged configured to receive measured pressure values obtained in the second chamber during an outward movement procedure, and to evaluate the measured pressure values by applying at least one evaluation criterion related to risk of hydraulic cylinder buckling of the hydraulic cylinder. The working equipment control system is further configured to perform a predetermined activity to reduce the risk of hydraulic cylinder buckling in dependence of the result of the evaluation.

A loading arrangement for loading and unloading load units on and/or off a vehicle comprises a frame, wherein said frame has first and second ends and to be fastened to the vehicle in a detachable manner. The arrangement comprises also a transferring device for catching and transferring the load unit on and/or off the vehicle, said transferring device comprising a gripping point to be gripped by a hook system of the vehicle and a catching device for catching said load unit and for transferring it on or off the vehicle, when the transferring device is operated by said hook system of the vehicle. The frame comprises a dock, which is arranged in the first end of the frame and wherein the dock comprises a receiving portion for receiving the transferring device for at least loading and unloading said frame on and/or off the vehicle by the transferring device when said transferring device is operated by a hook system of the vehicle.