A lifting column includes a component having an internal thread, as well as a hollow shaft having an external thread, which is in engagement with the internal thread of the component. A threaded spindle is disposed inside the hollow shaft and has an external thread, which is in engagement with an internal thread of the hollow shaft. Furthermore, the lifting column includes a drive device configured to rotate the hollow shaft relative to the threaded spindle and the component. When the hollow shaft rotates, the component and the hollow shaft move in the same axial direction so that the height of the lifting column is changeable.

A lifting column (3) for a lifting system (2) of a furniture is provided. The lifting column (3) comprises at least two tube portions (4, 5) displaceable with respect to one another like a telescope, a high-voltage direct-current motor (6) and a transmission (7) for transforming a rotational motion into a linear motion, wherein the high-voltage direct-current motor (6) and the transmission (7) are arranged inside at least one of the at least two tube portions (4, 5) displaceable with respect to one another like a telescope.

A lifting column (3) for a lifting system (2) of a furniture is provided. The lifting column (3) comprises at least two tube portions (4, 5) displaceable with respect to one another like a telescope, a high-voltage direct-current motor (6) and a transmission (7) for transforming a rotational motion into a linear motion, wherein the high-voltage direct-current motor (6) and the transmission (7) are arranged inside at least one of the at least two tube portions (4, 5) displaceable with respect to one another like a telescope.

A transmission assembly includes a hollow spindle, an outer wall of which is provided with an outer thread; a transmission worm disposed in the hollow spindle; a first transmission nut which is thread-fitted with the transmission worm, wherein the hollow spindle is rotatably positioned relative to the first transmission nut in an axial direction, and an external portion of the first transmission nut is provided with a locking structure for limiting the first transmission nut from rotating; a second transmission nut which is thread-fitted with the hollow spindle; a bushing which is bushed outside of the hollow spindle, the second transmission nut being fixedly connected with the bushing; and a guide tube which is rotatably limited in the bushing.

A telescopic pipe includes a base pipe having a base inner pipe rotated by external force, and a base outer pipe arranged to receive the base inner pipe; a connecting pipe having a connecting inner pipe coupled to the base inner pipe to be extendable to transfer rotational force, and a connecting outer pipe screw-coupled to the inner circumferential surface of the base outer pipe to be extendable; and a finishing pipe including a finishing inner pipe coupled to the connecting inner pipe to be extendable and to be rotated, and a finishing outer pipe that is interlocked by means of rotation of the finishing inner pipe and is screw-coupled to the inner circumferential surface of the connecting outer-pipe to be extendable, wherein the connecting outer pipe is interlocked by the rotational force of the extended finishing outer pipe and thus is extended and retracted along the base outer pipe.

A jack, comprising: a top plate adapted to contact a load; a base plate positioned below the top plate; at least one actuator coupled perpendicularly between the base plate and the top plate; wherein the at least one actuator is operable to move the top plate between a lowered position and a raised position to thereby lower and raise the load; and, at least one locking assembly adapted to lock the top plate in the raised position.

A jack, comprising: a top plate adapted to contact a load; a base plate positioned below the top plate; at least one actuator coupled perpendicularly between the base plate and the top plate; wherein the at least one actuator is operable to move the top plate between a lowered position and a raised position to thereby lower and raise the load; and, at least one locking assembly adapted to lock the top plate in the raised position.

The present invention relates to a lifting column and a first and second mast for lifting a vehicle, a lifting system including one or more of these lifting columns and a method for lifting a vehicle. The lifting column according to the invention includes a frame provided with a first mast and a second mast; at least one carrier configured for engaging the vehicle, with the at least one carrier moveable relative to the first and second mast; and a lifting mechanism with a drive for moving the at least one carrier and lifting the vehicle. The first and second mast are positioned on the frame at a mast distance, with the mast distance enabling access to a wheel of the vehicle.

The present invention relates to a lifting column and a first and second mast for lifting a vehicle, a lifting system including one or more of these lifting columns and a method for lifting a vehicle. The lifting column according to the invention includes a frame provided with a first mast and a second mast; at least one carrier configured for engaging the vehicle, with the at least one carrier moveable relative to the first and second mast; and a lifting mechanism with a drive for moving the at least one carrier and lifting the vehicle. The first and second mast are positioned on the frame at a mast distance, with the mast distance enabling access to a wheel of the vehicle.

A moving body includes a housing, a traction motor, a plurality of elevator motors and a battery. The traction motor allows the housing to travel along a traveling surface. The plurality of elevator motors actuates an elevator unit, the elevator unit being configured to be elevated and lowered with respect to the traveling surface. The battery supplies electric power to the traction motor and the plurality of elevator motors. In the moving body, the plurality of elevator motors, the traction motor, and the battery are distributed when viewed perpendicularly to the traveling surface. The moving body further comprises at least one driving wheel to support the housing on the traveling surface. The plurality of elevator motors, the traction motor, and the battery fall, in a direction perpendicular to the traveling surface, within a range defined by a diameter of the at least one driving wheel.