A lifting apparatus and controller therefore, where the lifting apparatus includes independently driven lifting columns and independently driven wheels that are controlled by a controller having a number of sensors such as limit sensors, position sensors, rotation sensors, laser sensors, torque sensors and the like. The independent motors for lifting and driving may also be removed easily to provide for improved servicing and maintenance. The various sensor signals are used to calculate, coordinate and calibrate the apparatus for precise and safe movement by the motors in order to perform lifting and positioning operations, for example rail car repair and service.

A lifting apparatus and controller therefore, where the lifting apparatus includes independently driven lifting columns and independently driven wheels that are controlled by a controller having a number of sensors such as limit sensors, position sensors, rotation sensors, laser sensors, torque sensors and the like. The independent motors for lifting and driving may also be removed easily to provide for improved servicing and maintenance. The various sensor signals are used to calculate, coordinate and calibrate the apparatus for precise and safe movement by the motors in order to perform lifting and positioning operations, for example rail car repair and service.

A wheelchair stand may include a base; a vertical support bar extending upward from the base; an upper bar extending transversely from the vertical support bar and spaced vertically away from the base; a hanger supported by the upper bar and spaced away from the vertical support bar; and a strap supported by the hanger. A method of maintaining a wheelchair may include: a) moving the wheelchair to a position below a hanger; b) positioning a strap below the wheelchair; c) connecting the strap to opposite ends of the hanger; and d) shortening the strap to raise the wheelchair.

A wheelchair stand may include a base; a vertical support bar extending upward from the base; an upper bar extending transversely from the vertical support bar and spaced vertically away from the base; a hanger supported by the upper bar and spaced away from the vertical support bar; and a strap supported by the hanger. A method of maintaining a wheelchair may include: a) moving the wheelchair to a position below a hanger; b) positioning a strap below the wheelchair; c) connecting the strap to opposite ends of the hanger; and d) shortening the strap to raise the wheelchair.

An apparatus is for performing parts of an operation to install a wind turbine, wherein the wind turbine has a tower, wherein the apparatus has a travelling car for travelling up and down along the tower for the wind turbine, and wherein the travelling car has a movable portion of a deck of the travelling car, wherein the movable portion of the deck is configured to carry an item to be installed as part of the wind turbine to a height for installation of the item and for moving the item substantially horizontally into a position for installation of the item when the travelling car is in a vertical position for installation of said item. Further is disclosed a method of installing at least a part of a wind turbine.

A solid mast raiser system is disclosed herein. The solid mast raiser system may include a slot configured to house a mast. Further, the slot may be further configured to be inserted in to a predrilled bore in the ground. Further, a length of the slot may be matched to a depth of the predrilled bore in the ground. Further, the solid mast raiser system may include a stanchion configured to be attached to the slot. Further, the stanchion may be concentrically aligned with the slot. Further, the stanchion may rest upon a cable. Further, the solid mast raiser system may include a launcher coupled to the stanchion through a cable. Further, the launcher may be configured to raise and retract the stanchion. Further, the launcher may be configured to be affixed to the ground. Further, the launcher may comprise a first hole concentrically aligned with the slot.

A double-wide, independent platform vehicle lift has vehicle platforms engaged with a framework by guide members which engage guide tracks in posts. Each platform has at least one corner which has a guide member that engages a depending receptacle when the platform is lifted to a selected height by operation of a respective linear actuator.

A double-wide, independent platform vehicle lift has vehicle platforms engaged with a framework by guide members which engage guide tracks in posts. Each platform has at least one corner which has a guide member that engages a depending receptacle when the platform is lifted to a selected height by operation of a respective linear actuator.

A lifting device 8 with excellent transportability is provided. The lifting device 8 includes a first lifting unit 6 and a second lifting unit 7 disposed above the first lifting unit 6. The first lifting unit 6 includes a base 61, a first lifting platform 62 disposed above the base 61, and a first lifting system 63 which is provided between the base 61 and the first lifting platform 62 and which raises and lowers the first lifting platform 62. The second lifting unit 7 includes a second lifting platform 72 disposed above the first lifting platform 62, and a second lifting system 73 which raises and lowers the second lifting platform 72.

An modular lift system for hoisting objects along a track to a predetermined height. The lift system may include a limit switch, a carriage with an automatic emergency braking system, and a peak to engage the track, whereby the carriage rolls along the side rails of the track between the peak mounted to the top of the track and the bottom of the track. The carriage can be adjustable thereby permitting it to be adapted to various types and sizes of tracks. The automatic emergency braking system is adapted to prevent the uncontrolled descent of the carriage in the event of a cable or primary brake failure.