Abstract: The present invention concerns a method for controlling the speed of motion of a hydraulically operated machine, an operating system and a control device of the machine. The flow line (3) of the medium from the pump (2) to the machine (1) is divided into two branches (10, 11). By means of a valve (8), the second branch (11) can be set to feed medium either to the machine (1) or to return the medium to the tank (4) of the pump. Such a flow is led to the second valve (8), that at a speed of rotation of the pump lower than the highest speed of rotation, the difference between the flow supplied by the pump and the flow through the second branch produces the desired slowest speed on motion of the device. When the valve (8) is set to return the medium to the tank (4) of the pump, the flow from the pump (2) is adjusted by changing the speed of rotation of the pump.

Abstract: The present invention discloses a transportable frame, an equipment frame and a load carrying vehicle for using the transportable frame and the equipment frame. The load carrying vehicle has a movable hook arm which can pivot around a pivotal connection to a link member which is itself pivotally connected to the vehicle. The transportable frame has longitudinal beams and an upstanding end portion formed by upstanding beams and a cross piece. The upstanding end portion has a coupling arrangement for detachably securing the equipment frame thereto. The equipment frame supports an item of equipment and includes at least two connected beams and a coupling arrangement carried by the beams. An upper region of the equipment frame has a support having secured thereto the item of equipment.

Abstract: Method and equipment for the transfer of a cargo space (13) onto a vehicle and off the vehicle. The loading device comprises an L-shaped piece (6), the upper end of the vertical arm (10) of said piece (6) being provided with a grasping hook (11), and the rear end of the horizontal arm (7) or of its extension (4) being provided with a transverse pivot shaft (3), around which the L-shaped piece is pivoted by means of an actuator (8). The grasping hook (11) pivots around a transverse shaft (17) relative the vertical arm (10) of the L-shaped piece (6) during the movement of transfer of the cargo space (13). The vertical arm (10) or an extension (16) of the vertical arm of the L-shaped piece (6) is provided with a projection (24), in relation to which the grasping hook (11) moves when it pivots relative the vertical arm (10) of the L-shaped piece (6).