Elevator arrangement and method

An elevator arrangement comprising:

• a hoistway;
• one or more vertically oriented guide rail lines in the hoistway for guiding vertical movement of one or more movable elevator units;
• one or more movable elevator units mounted in the hoistway vertically movably along one or more guide rail lines, including at least an elevator car;
• a hoisting roping;
• a movable support structure mounted in the hoistway for supporting said one or more movable elevator units below it via said hoisting roping;
• a hoisting machine on the movable support structure for moving the hoisting roping, for thereby moving said one or more movable elevator units,
• wherein said movable support structure is configured to move independently of the elevator car and comprises a body portion, and a shelf structure projecting laterally from the body portion, and the hoisting machine is mounted on the shelf structure;
• and wherein one or more of said one or more vertically oriented guide rail lines comprises guide rail sections piled on top of each other, and said hoisting machine is displaceable between a first position and a second position, wherein
• in said first position the hoisting machine is on top of an uppermost guide rail section of one or more vertically oriented guide rail lines and/or below a guide rail bracket mounted in the hoistway such that the vertical projection of the hoisting machine, in particular the vertical projection of a motor and/or the drive wheel thereof, overlaps with a vertical projection of the guide rail section in question and/or the guide rail bracket in question, and
• in said second position the hoisting machine is displaced such that the vertical projection of the hoisting machine, in particular the vertical projection of the motor and/or the drive wheel thereof, and the vertical projection of the guide rail section in question and/or the guide rail bracket in question are beside each other.