Abstract: There is disclosed a lifting apparatus and a method for lifting a shovel including its upper part, its lower part, and its boom while the shovel handle and dipper remain on the ground. The lifting system may comprise six lifting devices arranged in three pairs that are disposed under the shovel on three lines: front, middle and rear (ref. FIG. 10), the rear line being under the shovel counterweight. The lifting system is connected to a power and control unit from which, through the use of a programmable logic controller and level detectors, metered hydraulic power is selectively applied at each lifting point in order to raise the shovel to a desired height while in doing so maintaining it level with a pre-set lifting plane throughout the entire operation.

Abstract: There is disclosed a lifting apparatus and a method for lifting a shovel including its upper part, its lower part, and its boom while the shovel handle and dipper remain on the ground. The lifting system may comprise six lifting devices arranged in three pairs that are disposed under the shovel on three lines: front, middle and rear, the rear line being under the shovel counterweight. The lifting system is connected to a power and control unit from which, through the use of a programmable logic controller and level detectors, metered hydraulic power is selectively applied at each lifting point in order to raise the shovel to a desired height while in doing so maintaining it level with a pre-set lifting plane throughout the entire operation.

Abstract: A heavy vehicle lifting apparatus and a hydraulic lifting unit. Each lifting unit has a housing with a displaceable upper portion which has an application surface being engageable with a lifting point of the heavy vehicle. Two or more hydraulic actuators are disposed within the housing and linked with a common fixed structure. Each actuator has an extendable cylinder attached to the upper portion. The cylinders in operation collectively vertically displace the upper portion and the application surface between a first position wherein the application surface is disengaged from the lifting point, and a second position wherein the application surface engages the lifting point and the heavy vehicle is lifted from a ground surface.

Abstract: A universal lifting device for elevating heavy off-the-road vehicles, e.g. mechanical shovels used in mining operations, is proposed to raise the upper revolving section of the shovel and allow for its lower wheeled base to be removed with a view to attending to the maintenance, for instance, of the rotation mechanism of the shovel. The lifting device comprises front and rear lifting beams to which various type of brackets can be removably mounted to ensure a proper positioning of the front and rear lifting beams with respect to the revolving frame of different models of mechanical shovels. Front and rear lifting points are provided to control the vertical displacement of the front and the rear lifting beams, respectively.

Abstract: A universal lifting device for elevating heavy off-the-road vehicles, e.g. mechanical shovels used in mining operations, is proposed to raise the upper revolving section of the shovel and allow for its lower wheeled base to be removed with a view to attending to the maintenance, for instance, of the rotation mechanism of the shovel. The lifting device comprises front and rear lifting beams to which various type of brackets can be removably mounted to ensure a proper positioning of the front and rear lifting beams with respect to the revolving frame of different models of mechanical shovels. Front and rear lifting points are provided to control the vertical displacement of the font and the rear lifting beams, respectively.

Abstract: A universal lifting device for elevating heavy off-the-road vehicles, e.g. mechanical shovels used in mining operations, is proposed to raise the upper revolving section of the shovel and allow for its lower wheeled base to be removed with a view to attending to the maintenance, for instance, of the rotation mechanism of the shovel. The lifting device comprises front and rear lifting beams to which various type of brackets can be removably mounted to ensure a proper positioning of the front and rear lifting beams with respect to the revolving frame of different models of mechanical shovels. Front and rear lifting points are provided to control the vertical displacement of the front and the rear lifting beams, respectively.

Abstract: A universal lifting device for elevating heavy off-the-road vehicles, e.g. mechanical shovels used in mining operations, is proposed to raise the upper revolving section of the shovel and allow for its lower wheeled base to be removed with a view to attending to the maintenance, for instance, of the rotation mechanism of the shovel. The lifting device comprises front and rear lifting beams to which various type of brackets can be removably mounted to ensure a proper positioning of the front and rear lifting beams with respect to the revolving frame of different models of mechanical shovels. Front and rear lifting points are provided to control the vertical displacement of the front and the rear lifting beams, respectively.