WO2022237980A1

WO2022237980A1 - An arrangement and a method for installing an elevator

Info

Publication number: WO2022237980A1
Application number: PCT/EP2021/062688
Authority: WO
Inventors: Harri Mäkinen; Mikael Haag; Joonas JOKELA; Markku HÄIVÄLÄ
Original assignee: Kone Corporation
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-11-17

Abstract

An arrangement and a method for installing an elevator.An installation platform (100) is suspended with a hoisting rope (50) forming a first angle with the vertical direction (Z) so that rollers (150) extending outwards from a first edge (E1) of the installation platform are pressed against a support wall in the shaft. The installation platform comprises a first set of lifting points(P11) at the first edge and a second set of lifting points (P21, P22) at a second opposite edge (E2) of the installation platform. The lifting points are connected to the hoisting rope. The first set of lifting points are fixedly attached to the installation platform and the second set of lifting points are movably arranged on the installation platform or vice a versa. The movable lifting points are movable in the vertical direction or in the horizontal direction.

Description

AN ARRANGEMENT AND A METHOD FOR INSTALLING AN ELEVATOR FIELD

The invention relates to an arrangement and a method for installing an elevator.

BACKGROUND

An elevator may comprise a car, a shaft, hoisting machinery, ropes, and a counterweight. A separate or an integrated car frame may surround the car.

The hoisting machinery may be positioned in the shaft. The hoisting machinery may comprise a drive, an electric motor, a traction sheave, and a machinery brake. The hoisting machinery may move the car upwards and downwards in the shaft. The machinery brake may stop the rotation of the traction sheave and thereby the movement of the elevator car.

The car frame may be connected by the ropes via the traction sheave to the counterweight. The car frame may further be supported with guiding means at guide rails extending in the vertical direction in the shaft. The guide rails may be attached with fastening brackets to the side wall structures in the shaft. The guiding means keep the car in position in the horizontal plane when the car moves upwards and downwards in the shaft. The counterweight may be supported in a corresponding way on guide rails that are attached to the wall structure of the shaft.

The car may transport people and/or goods between the landings in the building. The wall structure of the shaft may be formed of solid walls or of an open beam structure or of any combination of these.

The installation of an elevator in the shaft may be done with an installation platform being suspended with a hoisting rope from a hoist. The hoist moves the installation platform upwards and downwards in the shaft. The installation platform may be supported with rollers on a support wall in the shaft. There may be a need to be able to tilt the installation platform during the movement of the installation platform to avoid collisions with obstacles on the support wall of the shaft.

SUMMARY

An object of the invention is an improved arrangement and method for installing an elevator. The arrangement for installing an elevator according to the invention is defined in claim 1.

The method for installing an elevator according to the invention is defined in claim 8.

The installation platform provided in the arrangement may be used to transport elevator equipment e.g. guide rails, landing doors, etc. upwards in the shaft. One or more industry robots may further be provided on the installation platform. The industry robots may be used for the installation of the elevator equipment.

The possibility to move the lifting points in the first set of lifting points or in the second set of lifting points in the vertical direction or in the horizontal direction in relation to the installation platform makes it possible to control the inclination of the installation platform in the shaft.

One embodiment of the invention may comprise only one lifting point in the first set of lifting points and two lifting points in the second set of lifting points. The single lifting point in the first set of lifting points may be movable in the vertical or in the horizontal direction. The inclination of the installation platform could in such an embodiment be done with only one first actuator acting on the single lifting point in the first set of lifting points. The first actuator may be supported on the installation platform i.e. the whole functionality may be integrated into the lifting platform.

The installation platform may further comprise a second actuator in connection with each roller for moving the roller horizontally outwards and inwards from the first outer edge of the installation platform.

The installation platform may further comprise inclination detecting means for detecting the inclination of the installation platform. The inclination detecting means may be realized with an inclinometer installed on the installation platform. Another possibility would be to use two consecutive distance lasers facing towards the support wall along which the installation platform is moving in the shaft. The inclination of the installation platform may be measured with the two consecutive distance lasers.

The installation platform may further comprise obstacle detection sensors for detecting obstacles on the support wall along which the installation platform is moving in the shaft. The obstacle detection sensor may be realized with a distance laser facing towards the support wall along which the installation platform is moving in the shaft. Collisions against possible obstacles in the support wall of the shaft may thus be avoided.

DRAWINGS

The invention will in the following be described in greater detail by means of preferred embodiments with reference to the attached drawings, in which

Figure 1 shows a side view of an elevator,

Figure 2 shows a horizontal cross section of the elevator,

Figure 3 shows a cross-section of the inventive arrangement,

Figures 4 shows an isometric view of a first embodiment of an installation platform that may be used in the inventive arrangement,

Figure 5 shows a horizontal cross-sectional view of the installation platform of figure 4 in the shaft,

Figure 6 shows a vertical cross-sectional view of the installation platform of figure 4 in the shaft

Figure 7 shows an operating principle of the installation platform of figure 4,

Figure 8 shows an isometric view of a second embodiment of an installation platform that may be used in the inventive arrangement,

Figure 9 shows an isometric view of a third embodiment of an installation platform that may be used in the inventive arrangement.

DETAILED DESCRIPTION

Figure 1 shows a side view and figure 2 shows a horizontal cross section of the elevator.

The elevator may comprise a car 10, an elevator shaft 20, hoisting machinery 30, ropes 42, and a counterweight 41. A separate or an integrated car frame 11 may surround the car 10.

The hoisting machinery 30 may be positioned in the shaft 20. The hoisting machinery may comprise a drive 31, an electric motor 32, a traction sheave 33, and a machinery brake 34. The hoisting machinery 30 may move the car 10 in a vertical direction Z upwards and downwards in the vertically extending elevator shaft 20. The machinery brake 34 may stop the rotation of the traction sheave 33 and thereby the movement of the elevator car 10.

The car frame 11 may be connected by the ropes 42 via the traction sheave 33 to the counterweight 41. The car frame 11 may further be supported with guiding means 27 at guide rails 25 extending in the vertical direction in the shaft 20. The guiding means 27 may comprise rolls rolling on the guide rails 25 or gliding shoes gliding on the guide rails 25 when the car 10 is moving upwards and downwards in the elevator shaft 20. The guide rails 25 may be attached with fastening brackets 26 to the side wall structures 21 in the elevator shaft 20. The guiding means 27 keep the car 10 in position in the horizontal plane when the car 10 moves upwards and downwards in the elevator shaft 20. The counterweight 41 may be supported in a corresponding way on guide rails that are attached to the wall structure 21 of the shaft 20.

The wall structure 21 of the shaft 20 may be formed of solid walls 21 or of open beam structure or of any combination of these. One or more of the walls may thus be solid and one or more of the walls may be formed of an open beam structure. The shaft 20 may be comprise a front wall 21 A, a back wall 21 B and two opposite side walls 21 C, 21 D. There may be two guide rails 25 for the car 10. The two car guide rails 25 may be positioned on opposite side walls 21 C, 21 D. There may further be two guide rails 25 for the counterweight 41. The two counterweight guide rails 25 may be positioned on the back wall 21 B.

The guide rails 25 may extend vertically along the height of the elevator shaft 20. The guide rails 25 may thus be formed of guide rail elements of a certain length e.g. 5 m. The guide rail elements 25 may be installed end- on-end one after the other. The guide rail elements 25 may be attached to each other with connection plates extending between the end portions of two consecutive guide rail elements 25. The connection plates may be attached to the consecutive guide rail elements 25. The ends of the guide rails 25 may comprise form locking means to position the guide rails 25 correctly in relation to each other. The guide rails 25 may be attached to the walls 21 of the elevator shaft 20 with support means at support points along the height of the guide rails 25.

The car 10 may transport people and/or goods between the landings in the building.

Figure 2 shows plumb lines PL1, PL2 in the shaft 20. The plumb lines PL1, PL2 may be formed with traditional vires or with light sources e.g. lasers having the beams directed upwards along the plumb lines PL1, PL2. Plumb lines PL1, PL2 may be used as reference lines for measuring alignment of guide rails.

Figure 1 shows a first direction Z, which is a vertical direction in the elevator shaft 20. Figure 2 shows a second direction X, which is the direction between the guide rails (DBG) and a third direction Y, which is the direction from the back wall to the front wall (BTF) in the shaft 20. The second direction X is perpendicular to the third direction Y. The second direction X and the third direction Y are perpendicular to the first direction Z. The second direction X and the third direction Y are horizontal.

Figure 3 shows a cross-section of the inventive arrangement.

An installation platform 100 is suspended with a hoisting rope 50 from a hoist H 1. The hoist H 1 may be arranged in an upper portion of the shaft 20. A horizontal distance D1 between the back wall 21 B of the shaft 20 and the fastening point of the hoisting rope 50 at the hoist H1 is smaller than a horizontal distance D2 between the back wall 21 B of the shaft and the fastening point of the hoisting rope 50 at the installation platform 100. An angle a1 is thus formed between the direction of the hoisting rope 50 extending between the hoist H 1 and the installation platform 100 and the vertical direction Z. The angle a1 results in a horizontal force F1 pushing the installation platform 100 against the back wall 21 B of the shaft 20. The installation platform 100 is supported via rollers 140 on the back wall 21 B of the shaft 20.

Figures 4 shows an isometric view of a first embodiment of an installation platform that may be used in the inventive arrangement.

The installation platform 100 comprises a frame 110. The frame 110 has a general form of a parallelepiped. The frame 110 comprises vertical beams 120 and horizontal beams 130. Two consecutive decks 160, 170 may be formed on the installation platform 100. The installation platform 100 may thus comprise an upper deck 160 and a lower deck 170. The decks 160, 170 may be supported on the horizontal support beams 130 of the frame 110 of the installation platform 100.

The installation platform 100 comprises further rollers 150 arranged at a first outer edge E1 of the installation platform 100. The rollers 150 are supported on the installation platform 100. The installation platform 100 is supported via the rollers 150 on a support wall 21 in the shaft 20. Two rollers 150 may be arranged in connection with the upper portion of the installation platform 100 and two rollers 140 may be arranged in connection with the lower portion of the installation platform 100. The rollers 150 may be movably arranged in the installation platform 100. The rollers 150 may be arranged to be movable in a horizontal direction outwards and inwards from the first outer edge E1 of the installation platform 100. The moving direction Y of the rollers 150 may coincide with the back to front BTF direction Y in the shaft. This is the case when the installation platform 100 is arranged to move along the back wall 21 B in the shaft. The rollers 150 will thus roll on the back wall 21 B of the shaft when the installation platform 100 moves upwards and downwards in the shaft. Each roller may be provided with an actuator (not shown in the figure) for moving the roller 150 horizontally outwards and inwards in relation to the installation platform 100.

The installation platform 100 comprises further a first set of lifting points P11 arranged adjacent to the first outer edge E1 of the installation platform 100 and a second set of lifting points P21 , P22 arranged adjacent to a second opposite outer edge E2 of the installation platform 100. The installation platform 100 is supported through the lifting points P11, P21, P22 on the hoisting rope 50. The first set of lifting points P11 may comprise one lifting point P11 and the second set of lifting points P21 , P22 may comprise two lifting points P21, P22. The lifting points P11, P21, P22 may be arranged in connection with the upper deck 110 of the installation platform 100.

The single lifting point P1 in the first set of lifting points P1 may be arranged on a horizontal centre line C1 of the upper deck 110 adjacent to the first outer edge E1 of the installation platform 100.

The two lifting points P21, P22 in the second set of lifting points P21, P22 may be arranged symmetrically on opposite sides of the centre line C1 of the upper deck 110 adjacent to the second opposite outer edge E2 of the installation platform 100.

Each of the lifting points P11, P21, P22 is connected to the hoisting rope 50. A connection rope 51, 52, 53 may extend from each lifting point P11, P21, P22 to a connection point P30 above the installation platform 100. The connection ropes 51 , 52, 53 may be connected to each other in the connection point P30. A lower end of the hoisting rope 50 may also be connected to the connection point P30.

A first possibility is to arrange the single lifting point P11 in the first set of lifting points P11 to be movable in relation to the installation platform 100. The single lifting point P11 in the first set of lifting points P11 may be movable in the vertical direction Z or in the horizontal direction Y in relation to the installation platform 100. The horizontal direction Y may pass along the horizontal centre line C1 of the upper deck 110. The two lifting points P21, P22 in the second set of lifting points P21 , P22 may in this case be fixedly attached to the installation platform 100.

A second possibility is to arrange the two lifting points P21, P22 in the second set of lifting points P21, P22 to be movable in relation to the installation platform 100. The two lifting points P21, P22 in the second set of lifting points P21, P22 may be movable in the vertical direction Z or in the horizontal direction Y in relation to the installation platform 100. The horizontal direction Y may pass along the horizontal centre line C1 of the upper deck 110. The single lifting point P11 in the first set of lifting points P11 may in this case be fixedly attached to the installation platform 100.

Figure 5 shows a horizontal cross-sectional view of the installation platform of figure 4 in the shaft.

The lifting points P11, P21, P22 are shown on the upper deck 110 of the installation platform 100. The single lifting point P11 in the first set of lifting points P11 is positioned on the centre axis C1 of the installation platform 100 in the vicinity of a first outer edge E1 of the installation platform 100 facing towards the back wall 21 B in the shaft 20. The centre axis C1 of the installation platform 100 passes in the back to front BTF direction Y of the shaft 20. The two lifting points P21, P22 in the second set of lifting points P21, P22 are positioned on opposite sides of the centre axis C1 of the installation platform 100 in the vicinity of a second opposite outer edge E2 of the installation platform 100 facing towards the front wall 21 A of the shaft 20. The rollers 150 are rolling on the back wall 21 B of the shaft 20. Each outer edge of the installation platform 100 are positioned at a distance from the respective wall 21 A, 21 B, 21 C, 21 D of the shaft 20. The installation platform 100 may also comprise recesses 180 in the side edges of the installation platform 100. The guide rails 25 may pass through said recesses 180 when the installation platform 100 moves upwards and downwards in the shaft 20.

The distance D3 between the two lifting points P21, P22 in the second set of lifting points P21, P22 should be such that the installation platform 100 is kept in balance during the lifting of the installation platform 100.

Figure 6 shows a vertical cross-sectional view of the installation platform of figure 4 in the shaft.

A first actuator 200 is provided for moving the single lifting point P11 in the first set of lifting points P11 either in the vertical direction Z or in the horizontal direction Y. The first actuator 200 may in both alternatives be supported on the installation platform 100.

A second actuator 300 may be provided in connection with each roller 150 of the installation platform 100. Each second actuator 300 may move a respective roller 150 horizontally outwards and inwards from the installation platform 100. The actuator 300 may be a manual actuator. The actuator 300 may be based on a cylinder with an inner threading and two shafts with an outer threading extending in opposite directions outwards from the cylinder. Rotation of the cylinder in a first direction will move the roller 150 in a first direction and rotation of the cylinder in a second opposite direction will move the roller 150 in a second opposite direction.

The second actuators 300 may be used to adjust the rollers 150 so that a desired inclination angle a1 of the hoisting rope 50 is achieved.

The installation platform 100 may further be provided with an inclination measuring device 410 for measuring the inclination of the installation platform 100.

The installation platform 100 could on the other hand be provided with two consecutive distance detecting devices 430, 440 for measuring the inclination of the installation platform 100. A first distance detecting device 430 could be arranged below the upper deck 170 and a second distance detection device 440 could be arranged above the lower deck 160. The two distance detecting devices 430, 440 could be positioned at a vertical distance from each other.

The installation platform 100 could further be provided with a third distance detecting device 420 for detecting obstacles on the back wall 21 B of the shaft 20. The third distance detecting device 420 could be positioned above the upper deck 170. The third distance detecting device 420 would thus be used to detect objects protruding outwards from the back wall 21 B in the shaft 20.

Figure 7 shows an operating principle of the installation platform of figure 4 in the shaft.

The figure shows how the installation platform 100 may bypass an obstacle 510 on the back wall 21 B of the shaft 20.

The installation platform 100 is first tilted in the upper part of the figure so that the upper rollers 150 are positioned at a distance from the back wall 21 B in the shaft 20. The upper rollers 150 may thus bypass the obstacle 510 on the back wall 21 B of the shaft 20 when the installation platform 100 is moved upwards in the shaft 20. The lower rollers 150 are rolling on the back wall 21 B of the shaft 20. The obstacle 510 may be a bolt, a construction element, a piece of concrete etc.

The installation platform 100 is then tilted in the lower part of the figure so that the lower rollers 150 are positioned at a distance from the back wall 21 B in the shaft 20. The lower rollers 150 may thus bypass the obstacle 510 on the back wall 21 B of the shaft 20 when the installation platform 100 is moved upwards in the shaft 20. The upper rollers 150 are rolling on the back wall 21 B of the shaft 20.

A first alternative to tilt the installation platform 100 is to use a first actuator 200 arranged to move the single lifting point P11 in the first set of lifting points P11 in the vertical direction Z upwards or downwards in relation to the installation platform 100.

A second alternative to tilt the installation platform 100 is to use a first actuator 200 arranged to move the single lifting point P11 in the first set of lifting points P11 in the horizontal direction Y along the centre line C1 of the upper deck 110 of the installation platform 100.

A third alternative to tilt the installation platform 100 is to use actuators 200 arranged to move the two lifting points P21, P22 in the second set of lifting points P21 , P22 in the vertical direction Z upwards or downwards in relation to the installation platform 100.

A fourth alternative to tilt the installation platform 100 is to use actuators 200 arranged to move the two lifting point P21, P22 in the second set of lifting points P21, P22 in the horizontal direction Y along the centre line C1 of the upper deck 110 of the installation platform 100.

The first actuator 200 may be realized with an electric motor rotating a screw for moving the lifting points P11, P21, P22. Another possibility would be to use a hydraulic piston-cylinder actuator for moving the lifting points P11 , P21 , P22.

Figure 8 shows an isometric view of a second embodiment of an installation platform that may be used in the inventive arrangement.

The major difference in this second embodiment of the installation platform in view of the first embodiment of the installation platform of figure 4 is in the lifting point arrangement.

The first set of lifting points P11, P12 comprises two lifting points P11 , P12 adjacent to the first edge E1 of the installation platform 100. The two lifting points P11, P12 in the first set of lifting points P11, P12 are fixedly attached on the installation platform 100.

The second set of lifting points P21, P22 comprises also two lifting points P21, P22 adjacent to the second opposite edge E2 of the installation platform 100. Each of the two second lifting points P21, P22 in the second set of lifting points P21, P22 are arranged movably on the installation platform 100. The two lifting points P21, P22 in the second set of lifting points P21, P22 are movable in the horizontal direction X. Each of the two second lifting points P21, P22 in the second set of lifting points P21, P22 comprises a roller supported via a shaft on a first roller frame. The first roller frame may further be supported via a shaft on a second roller frame. The second roller frame is movable in the horizontal direction X.

Each of the two stationary lifting points P11, P12 in the first set of lifting points P11, P12 is connected to the hoisting rope 50. A connection rope 51, 52 may extend from each lifting point P11, P12 to a connection point P30 above the installation platform 100. The connection ropes 51, 52 may be connected to each other in the connection point P30. A lower end of the hoisting rope 50 may also be connected to the connection point P30.

Each of the two movable lifting points P21, P22 in the second set of lifting points P21, P22 is connected to the hoisting rope 50. A single connection rope 53 may extend from the connection point P30 above the installation platform 100 to a first one P21 of the two lifting points P21, P22 in the second set of lifting points P21 , P22 and further to a second one P21 of the two lifting points P21, P22 in the second set of lifting points P21, P22 and further back to the connection point P30 above the installation platform 100.

Moving the two lifting points P21, P22 in the second set of lifting points P21, P22 away from each other in the horizontal direction X will raise the second edge E2 of the installation platform 100. Moving the two lifting points P21 , P22 in the second set of lifting points P21 , P22 towards each other in the horizontal direction X will lower the second edge E2 of the installation platform 100.

The two decks 160, 170 of the installation platform 100 are not for clarity reasons shown in the figure.

The major difference in this third embodiment of the installation platform in view of the second embodiment of the installation platform of figure 8 is in the second set of lifting points.

The two lifting points P21, P22 in the second set of lifting points P21, P22 are not provided with rollers in this embodiment. A separate connection rope 53, 54 passes from each lifting point P21, P22 in the second set of lifting points P21, P22 to the connection point P30 above the installation platform 100.

Moving the two lifting points P21, P22 in the second set of lifting points P21, P22 away from each other in the horizontal direction X will raise the second edge E2 of the installation platform 100. Moving the two lifting points P21, P22 in the second set of lifting points P21, P22 towards each other in the horizontal direction X will lower the second edge E2 of the installation platform 100.

The installation platform 100 may be used in a fully automated, partially automated as well as in a manual elevator installation.

The lifting points P11, P12, P21, P22 may be supported on the frame 110 of the installation platform 100.

The distance detecting devices 420, 430, 440 may be realized with distance lasers. The inclination measuring device 410 may be realized with an inclinometer.

The invention may be used in low rise and in high rise buildings. High rise buildings may have a hoisting height over 75 meters, preferably over 100 meters, more preferably over 150 meters, most preferably over 250 meters.

The use of the invention is not limited to the elevator disclosed in the figures. The invention can be used in any type of elevator e.g. an elevator comprising a machine room or lacking a machine room, an elevator comprising a counterweight or lacking a counterweight. The counterweight could be positioned on either side wall or on both side walls or on the back wall of the elevator shaft. The drive, the motor, the traction sheave, and the machine brake could be positioned in a machine room or somewhere in the elevator shaft. The car guide rails could be positioned on opposite side walls of the shaft or on a back wall of the shaft in a so-called ruck-sack elevator.

It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.

Claims

1. An arrangement for installing an elevator comprises an installation platform (100) being movably supported with rollers (150) on a support wall (21 B) in a shaft (20), the rollers (150) extending outwards form a first outer edge (E1) of the installation platform (100), the installation platform (100) comprising a frame (110) having a general form of a parallelepiped, a hoist (H1) for moving the installation platform (100) upwards and downwards along the support wall (21 B) in the shaft (20), the installation platform (100) being suspended with a hoisting rope (50) from the hoist (H1), the hoisting rope (50) forming a first angle (a1) with the vertical direction (Z) so that the rollers (150) of the installation platform (100) are pressed against the support wall (21 B) in the shaft (20), wherein the installation platform (100) comprises a first set of lifting points (P11, P12) positioned adjacent to the first outer edge (E1) of the installation platform (100) and a second set of lifting points (P21, P22) positioned adjacent to a second opposite outer edge (E2) of the installation platform (100), each of the lifting points (P11, P12, P21, P22) being connected to the hoisting rope (50), the lifting points (P11, P12) in the first set of lifting points (P11, P12) being fixedly attached to the installation platform (100) and the lifting points (P21, P22) in the second set of lifting points (P21, P22) being movably arranged on the installation platform (100) or vice a versa, the movable lifting points (P11 , P12, P21 , P22) being movable in the vertical direction (Z) or in the horizontal direction (X, Y).

2. The arrangement as claimed in claim 1, further comprising connection ropes (51, 52, 53, 54) between the lifting points (P11, P12, P21, P22) and a common connection point (P30) above the upper deck (110), a lower end of the hoisting rope (50) also being connected to the connection point (P30).

3. The arrangement as claimed in claim 1 or 2, further comprising a first actuator (200) on the installation platform (100) for moving the movable lifting points (P11, P12, P21, P22).

4. The arrangement as claimed in any one of claims 1 to 3, further comprising a second actuator (300) on the installation platform (100) in connection with each roller (150) for moving the roller (150) horizontally outwards and inwards from the first outer edge (E1) of the installation platform (100).

5. The arrangement as claimed in any one of claims 1 to 4, further comprising an inclination measuring device (410) for measuring the inclination of the installation platform (100).

6. The arrangement as claimed in any one of claims 1 to 4, further comprising two consecutive distance detection devices (430, 440) for detecting the distance of the installation platform (100) from the support wall (21) in the shaft (20) and thereby the inclination of the installation platform (100).

7. The arrangement as claimed in any one of claims 1 to 6, further comprising an obstacle detecting device (420) for detecting obstacles (510) on the support wall (21).

8. A method for installing an elevator comprising supporting an installation platform (100) movably with rollers (150) on a support wall (21 B) in a shaft (20), the rollers (150) extending outwards from a first outer edge (E1) of the installation platform (100), the installation platform (100) comprising a frame (110) having a general form of a parallelepiped, arranging a hoist (H1) for moving the installation platform (100) upwards and downwards along the support wall (21 B) in the shaft (20), the installation platform (100) being suspended with a hoisting rope (50) from the hoist (H1), the hoisting rope (50) forming a first angle (a1) with the vertical direction (Z) so that the rollers (150) of the installation platform (100) are pressed against the support wall (21 B) in the shaft (20), arranging a first set of lifting points (P11, P12) positioned adjacent to the first outer edge (E1 ) of the installation platform (100) and a second set of lifting points (P21, P22) positioned adjacent to a second opposite outer edge (E2) of the installation platform (100), each of the lifting points (P11, P12, P21, P22) being connected to the hoisting rope (50), the lifting points (P11, P12) in the first set of lifting points (P11, P12) being fixedly attached to the installation platform (100) and the lifting points (P21 , P22) in the second set of lifting points (P21, P22) being movably arranged on the installation platform (100) or vice a versa, the movable lifting points (P11, P12, P21, P22) being movable in the vertical direction (Z) or in the horizontal direction (X, Y).

9. The method as claimed in claim 8, further comprising arranging connection ropes (51, 52, 53, 54) between the lifting points (P11, P12, P21, P22) and a common connection point (P30) above the upper deck (110), and connecting a lower end of the hoisting rope (50) to the connection point (P30).

10. The method as claimed in claim 8 or 9, further comprising arranging a first actuator (200) on the installation platform (100) for moving the movable lifting points (P11, P12, P21, P22).

11. The method as claimed in any one of claims 8 to 10, further comprising arranging a second actuator (300) on the installation platform (100) in connection with each roller (150) for moving the roller (150) horizontally outwards and inwards from the first outer edge (E1) of the installation platform (100).

12. The method as claimed in any one of claims 8 to 11, further comprising arranging an inclination measuring device (410) for measuring the inclination of the installation platform (100).

13. The method as claimed in any one of claims 8 to 11, further comprising arranging two consecutive distance detecting devices (430, 440) for detecting the distance of the installation platform (100) from the support wall (21) in the shaft (20) and thereby the inclination of the installation platform (100).

14. The method as claimed in any one of claims 8 to 13, further comprising arranging an obstacle detecting device (420) for detecting obstacles (510) on the support wall (21).