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: The present disclosure concerns a lifting apparatus for lifting heavy machinery, comprising first and second spaced-apart lifting devices vertically extendable, each lifting device comprising a beam-receiving portion; and a transverse lifting beam comprising a beam body engageable with a portion of the heavy machinery, and first and second opposed mounting end portions removably engageable with the beam-receiving portions, for the transverse lifting beam to extend between the lifting devices. Each beam-receiving portion comprises one of a male connector and a female connector and each mounting end portion comprises the other one of a male connector and a female connector detachably engageable to the one of a male connector and a female connector of the corresponding beam-receiving portion. The present disclosure also concerns a kit for forming such a lifting apparatus, a lifting assembly comprising at least first and second lifting apparatuses and a method for lifting heavy machinery.

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.