Elevator installation arrangement and method for installing elevator

Abstract

An elevator installation arrangement (200), comprising an installation time platform (20) vertically movable on guide rails (8) arranged in an elevator hoistway (1); the installation time platform being suspendable from a support structure in the hoistway (1) by a man riding hoist (30) with a hoist rope (31) movable by the man riding hoist; the installation time platform comprising a frame (22) which comprises upright assemblies (10) arranged movable and lockable on opposite guide rails (8); each upright assembly (10) comprises a vertical beam (23); and a guide rail clamp (6) and a safety gear (5) mounted to said vertical beam; wherein the installation time platform comprises a lifting point arranged in connection with lower parts of the opposite vertical beams (23). A method for installing an elevator.

Description

[0001] ELEVATOR INSTALLATION ARRANGEMENT AND METHOD FOR INSTALLING ELEVATOR FIELD OF THE INVENTION

[0002] The invention relates to an elevator installation arrangement and a method for installing an elevator. In particular, the invention relates to an elevator installation time platform providing a lifting point in an elevator hoistway for installing an elevator.

[0003] BACKGROUND OF THE INVENTION

[0004] The construction of an elevator may especially in high-rise buildings be done in parts along the height of the hoistway. The guide rails and the landing doors may first be installed to a first height in the hoistway, then to a second height etc. A construction time elevator may then be operated on the already installed lower portion of the hoistway while the construction of the elevator is going on in a higher portion of the hoistway. Such an elevator may be called also a construction time use CTU elevator.

[0005] For jump lifts, stage installations, as well as installations where the elevator car cannot be used as an installation platform, an installation time platform is used for the installation of the elevator during installation.

[0006] The installation time platform is a tool that is used in sectional installations. Guide rails, landing doors and elevator shaft electrification above a protection deck mounted in the hoistway are installed using the installation time platform. The installation time platform may be moved with a man riding hoist for example using a 2:1 roping ratio.

[0007] SUMMARY OF THE INVENTION

[0008] An object of the present invention is to present an improved elevator installation arrangement and a method and to solve drawbacks in prior art.

[0009] A particular object of the present invention is to enhance safety in elevator installations.

[0010] The elevator installation arrangement comprises

[0011] an installation time platform vertically movable on guide rails arranged in an elevator hoistway;the installation time platform being suspendable from a support structure in the hoistway by a man riding hoist with a hoist rope movable by the man riding hoist;

[0012] the installation time platform comprising a frame which comprises upright assemblies arranged movable and lockable on opposite guide rails;

[0013] each upright assembly comprises a vertical beam; and a guide rail clamp and a safety gear mounted to said vertical beam; wherein

[0014] the installation time platform comprises a lifting point arranged in connection with lower parts of the opposite vertical beams.

[0015] According to an embodiment the lifting point is arranged below horizontal parts of the frame.

[0016] According to an embodiment the lifting point comprises a lifting point attachment mounted to the vertical beam.

[0017] According to an embodiment the lifting point comprises a loadbearing pin supported by two adjacent plates comprised by the lifting point attachment.

[0018] According to an embodiment the lifting point comprises a lifting point chain.

[0019] According to an embodiment the lifting point comprises an openable and closable connection element between the load-bearing pin and the lifting point chain.

[0020] According to an embodiment the lifting point comprises a diverting pulley and a lower hoist rope which are supported by the lifting point chains.

[0021] According to an embodiment the arrangement comprises, supported by the lifting point, a man riding hoist.

[0022] According to an embodiment each upright assembly comprises a downwards facing buffer mounted to the vertical beam.

[0023] According to an embodiment each of the upright assemblies comprises rollers for engaging with the guide rail.

[0024] According to an embodiment the arrangement comprises a man riding hoist to support and vertically move the installation time platform in the hoistway.

[0025] According to an embodiment the safety gear is activatable by an overspeed governor, when the speed of the installation time platform exceeds a predetermined speed of the overspeed governor.According to an embodiment the support structure in the hoistway comprises at least one of the following: a hoistway ceiling; or a protection deck arranged in the hoistway; or a hoisting / supporting point tool arranged in the hoistway.

[0026] According to an embodiment the installation time platform is suspended 1:1 or 2:1 by the man riding hoist.

[0027] According to an embodiment the frame comprises horizontal bottom beams, and opposite vertical beams connected to the bottom beams.

[0028] According to an embodiment the installation time platform comprises a floor cover co-operating with the frame.

[0029] According to an embodiment the arrangement comprises buffer clamps secured on the opposing guide rails for supporting an above resting installation time platform.

[0030] According to an embodiment buffers comprised by the installation time platform are configured to rest on the buffer clamps secured on any desired height in the hoistway.

[0031] According to an embodiment the guide rail clamp is adjustable for use with guide rails having different size in different hoistways.

[0032] According to an embodiment the buffer clamp is adjustable for use with guide rails having different size in different hoistways.

[0033] The method for installing an elevator comprises:

[0034] providing an installation time platform vertically movable on guide rails arranged in an elevator hoistway; the installation time platform comprising a frame;

[0035] suspending the installation time platform from a support structure in the hoistway by a man riding hoist with a hoist rope movable by the man riding hoist;

[0036] providing the frame with upright assemblies and arranging said upright assemblies movable and lockable on opposite guide rails,

[0037] providing each upright assembly with a vertical beam; and with a guide rail clamp and a safety gear mounted to said vertical beam; and arranging a lifting point in connection with lower parts of the opposite vertical beams.

[0038] According to an embodiment arranging the lifting point below horizontal parts of the frame.According to an embodiment arranging the lifting point in connection with the vertical beams comprises mounting a lifting point attachment to the vertical beam.

[0039] According to an embodiment providing the lifting point attachment with two adjacent plates supporting a load-bearing pin.

[0040] According to an embodiment providing the lifting point with a lifting point chain.

[0041] According to an embodiment providing the lifting point with an openable and closable connection element between the load-bearing pin and the lifting point chain.

[0042] According to an embodiment providing the lifting point with a diverting pulley and a lower hoist rope which are supported by the lifting point chains.

[0043] According to an embodiment providing the arrangement with a man riding hoist supported by the lifting point.

[0044] According to an embodiment providing the installation time platform vertically movable on guide rails comprises installing the following parts: upright assemblies on opposite guide rails; bottom beams; a synchronization bar; fixing brackets for the man riding hoist; guide rail pockets; horizontal floor beams and vertical corner bars; balustrade bars; and a floor cover.

[0045] With this solution the lifting point, for instance a 4-ton lifting point, integrated into the installation time platform can be moved and utilized anywhere in the elevator shaft without installing any other platforms. The installation time platform can be parked anywhere in elevator shaft, locked to its position with integrated guide rail clamps and used as a 4-ton lifting point. As the installation time platform is designed to be used in multiple elevator shafts with different dimensions, also this lifting point can be used many times in multiple shafts. Prior art 4-ton lifting point has been located only in a protection deck.

[0046] By integrating the guide rail clamps into uprights, in other words into vertical beams that are parallel with the opposite guide rails, of the single deck installation time platform the operator can use these guide rail clamps from the platform without the need to go below the platform to install the clamps into guide rails. The guide rail clamp itself can be easily reached and used. Reachability makes it possible to lock the single deck installation platform in any desired vertical position in elevator shaft to use it as a lifting point. Prior art installation clamp has been used to lock the installation platform in vertical direction by locking it into guide rail below the installation platform.With this solution it is possible to remove an existing buffer stand from a crash deck and make the crash deck construction lighter. It is also possible to use this solution as a lifting point for e.g. machinery. A prior art buffer stand has been integrated into the crash deck construction. The buffer clamp, in other words the separate clamp receiving the downward facing buffer of an above installation time platform, makes it possible to make the crash deck construction also less expensive. A single buffer clamp or clamps can be used also as lifting point when equipped with respective lifting elements such as one or more of the following: a lifting point attachment, a lifting connector, a lifting point chain, a diverting pulley, a lifting device such as a man riding hoist.

[0047] BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The invention will in the following be described in greater detail by means of preferred embodiments with reference to the attached drawings, in which:

[0049] Figures 1, 2 and 3 show an installation time platform of an arrangement for installing an elevator,

[0050] Figures 4 and 5 show buffer clamps mounted on guide rails, Figures 6 and 7 show the buffer clamp of Figure 4 in more detail, Figure 8 shows an upright assembly wherein rollers, a guide rail clamp, a safety gear, a lifting point attachment and a downwards facing buffer are mounted to a vertical beam of the installation time platform.

[0051] DETAILED DESCRIPTION

[0052] Figures 1-3 show an installation time platform 20 of an arrangement 200 for installing an elevator.

[0053] The installation time platform 20 is arranged in Figures 1-3 is vertically movable on guide rails 8 arranged in an elevator hoistway 1.

[0054] The installation time platform is suspendable from a support structure in the hoistway 1 by a man riding hoist 30 with a hoist rope 31 movable by the man riding hoist.

[0055] The installation time platform comprises a frame 22 which comprises upright assemblies 10 arranged movable and lockable on opposite guide rails 8.

[0056] Each upright assembly 10 comprises a vertical beam 23; and a guide rail clamp 6 and a safety gear 5 mounted to said vertical beam.The installation time platform comprises a lifting point arranged in connection with lower parts of the opposite vertical beams 23.

[0057] According to an embodiment the lifting point is arranged below horizontal parts of the frame 22.

[0058] The guide rails 8 may be mounted to hoistway walls.

[0059] In Figures 1-3 the installation time platform 20 is in an example configuration where it is movable with a man riding hoist 30 using a 2:1 roping ratio, but naturally a configuration using a 1:1 roping ratio is also possible.

[0060] According to an embodiment the installation time platform 20 comprises a floor cover 21 co-operating with a frame 22. The frame 22 comprises bottom beams 24 such as a first 24.1 and a second bottom beam 24.2, a third bottom beam 24.3 and a fourth bottom beam 24.4, and upright assemblies 10 each comprising a vertical beam 23 connected to the bottom beams 24.

[0061] According to an embodiment the platform 20 comprises connected to the bottom beams 24: a synchronization bar 25; fixing brackets 33 for the man riding hoist 30; guide rail pockets 29; and floor beams 24a.

[0062] According to an embodiment the platform 20 comprises connected to floor beams 24a: a corner bars 24b; balustrades 24c; and a floor cover 21.

[0063] The platform 20 may be accessed by an operator through a door in the balustrade 24c and an opening in a hoistway wall.

[0064] The platform 20 comprises below the frame 22, located in the upright assemblies 10, safety gears 5 which may be activated to contact elevator guide rails 8 via the brake synchronization bar 25, as seen in Figure 8 in more detail.

[0065] The safety gears 5 are located in connection with vertical beams 23 of the installation time platform 20 and are activated if the hoist rope 31 attached to the ceiling 2 loosens or the operator presses a brake activation pedal in vicinity of the platform floor cover 21. Said brake activation pedal is linked with the brake synchronization bar 25.

[0066] According to an embodiment when the hoist rope 31 of the man riding hoist 30 loosens, a spring-operated plate under the man riding hoist 30 activates the safety gears 5.

[0067] The safety gears 5 are also activated if an overspeed governor linked via an overspeed governor rope fixing 28 with a brake synchronization bar 25 lever 26 is activated.According to an embodiment each upright assembly 10 comprises a downwards facing buffer 7 mounted to the vertical beam 23.

[0068] According to an embodiment the arrangement comprises buffer clamps 60 secured on the opposing guide rails 8 for supporting an above resting installation time platform 20.

[0069] According to an embodiment the buffers 7 are configured to rest on buffer clamps 60 secured on any desired height in the hoistway.

[0070] According to an embodiment the arrangement 200 comprises a support structure in the hoistway for example a hoistway ceiling or a protection deck or a hoisting / supporting point tool arranged in the hoistway (not shown). The support structure may comprise a hoisting point to support the installation time platform 20 via the man riding hoist 30 and the hoist rope 31 ; and optionally a supporting point to support an overspeed governor rope or belt.

[0071] According to an embodiment, a man riding hoist 30’ for an elevator car or other heavy load is supported below the installation time platform 20.

[0072] According to an embodiment the arrangement 200 comprises a lifting point formed in connection with the vertical beams 23 of the installation time platform 20.

[0073] According to an embodiment the arrangement 200 comprises lifting point chains 43 which are connected under the installation time platform 20 at a lifting point attachment 40, comprising for example two adjacent plates and a secured load-bearing pin 41 therebetween. According to an embodiment the arrangement 200 comprises an openable and closable connection element 42 between the pin 41 and the chains 43 which is secure for heavy loads, such as a shackle.

[0074] According to an embodiment the arrangement 200 comprises a diverting pulley 44 and a lower hoist rope 3T which are supported by the lifting point chains 43.

[0075] According to an embodiment the arrangement 200 comprises buffer clamps 60, and the installation time platform 20 is configured to rest on the buffer clamps 60 secured on the opposing guide rails 8 on any desired height in the hoistway, for providing a lifting point in the hoistway when the guide rail clamps 6 are tightened and the safety gears 5 are engaged, and tension from the installation time platform hoist rope 31 is released.

[0076] According to an embodiment buffer clamp 60 is adjustable for use with guide rails 8 having different size in different hoistways.Figures 4 and 5 show buffer clamps 60 mounted on guide rails 8, and Figures 6 and 7 show the buffer clamp 60 of Figure 3 in more detail.

[0077] According to embodiments shown in Figures 4-7 the buffer clamp 60 comprises a locking groove 68 depicted by a dashed line in Figure 6 for receiving the guide rail 8.

[0078] According to an embodiment the buffer clamp 60 comprises two opposite locking surfaces between which the guide rail is clamped.

[0079] According to an embodiment the buffer clamp 60 comprises, assembled to a frame 60’ of the buffer clamp 60, a fixed jaw 61 having a first locking surface and a movable jaw 62 having a second locking surface and acting as counterpart for the fixed jaw.

[0080] According to an embodiment, the fixed jaw 61 acts wedge-like when in locking operation.

[0081] According to an embodiment the fixed jaw 61 and the movable jaw 62 are arranged as opposite sides of the locking groove 68.

[0082] According to an embodiment the buffer clamp 60 comprises a spring 64 to provide a clamping force that moves the movable jaw 62 toward the fixed jaw 61 when the guide rail 8 is positioned in the locking groove 68.

[0083] According to an embodiment the buffer clamp 60 comprises a motion screw 63 to provide a clamping force that moves the movable jaw 62 toward the fixed jaw 61 when the guide rail 8 is positioned in the locking groove 68.

[0084] According to an embodiment the buffer clamp 60 is lockable to the guide rail 8 by clamping the guide rail 8 between the sides of the locking groove 68.

[0085] The movable jaw 62 may be unlocked or moved away from the clamping position via the motion screw 63 moving the movable jaw 62 in relation to the fixed jaw 61. The motion screw 63 may compress the spring 64 when the movable jaw 62 is moved away from the fixed jaw 61.

[0086] The buffer clamp 60 comprises at least one mounting part 65, preferably one or two mounting bars, to be fixed for example by bolts to the frame 60’ for clamping the frame 60’ against the guide rail 8.

[0087] The buffer clamp 60 comprises a top support part 66, with a preferably horizontal support surface in the installed state of the buffer clamp 60 on the guide rail 8, for receiving and supporting an above installation time platform 20 buffer 7.

[0088] According to an embodiment the buffer clamps 60 are mounted at apredefined distance H from a below located or assumed obstacle 90 in the hoistway. Preferably the distance H is at least 400 mm. Said obstacle 90 is depicted by a dash-dotted plane 90 in Figure 4. Said predefined distance H is defined by the distance between the support surface of the support part 66 and the plane 90.

[0089] Said distance H represents a minimum height for a safety space below the installation time platform 20 resting by the buffers 7 on the buffer clamps 60. Said safety space may locate between the installation time platform 20 and a below crash deck; or between the installation time platform 20 and a below movable elevator car; or between the installation time platform 20 and a hoistway pit bottom.

[0090] According to an embodiment a downwards facing hoisting point is arranged in the buffer clamp 60, such as in the buffer clamp 60 shown in Figure 7. A single buffer clamp 60 or clamps 60 can be used also as lifting point when equipped with respective lifting elements such as one or more of the following: a lifting point attachment, a lifting connector 42, a lifting point chain 43, a diverting pulley 44, a lifting device such as a man riding hoist 30.

[0091] Figure 8 shows an upright assembly 10 wherein rollers 9, a guide rail clamp 6, the safety gear 5, a lifting point attachment 40 and a downwards facing buffer 8 are mounted to a vertical beam 23 of the installation time platform 20.

[0092] According to an embodiment the guide rail clamp 6 comprises a locking space seen in detail in Figure 8 for receiving the guide rail 8.

[0093] According to an embodiment the guide rail clamp 6 comprises two opposite locking surfaces between which the guide rail is clamped.

[0094] According to an embodiment the guide rail clamp 6 comprises, assembled to the vertical beam 23, a fixed counterpart 6.1 having a first locking surface and a movable cam 6.2 having a second locking surface and acting as counterpart for the fixed counterpart.

[0095] According to an embodiment, the fixed counterpart 6.1 acts wedgelike when in locking operation.

[0096] According to an embodiment the fixed counterpart 6.1 and the movable cam 6.2 are arranged as opposite sides of the said locking space.

[0097] According to an embodiment the guide rail clamp 6 comprises a spring to provide a clamping force that moves the movable cam 6.2 toward the fixed counterpart 6.1 when the guide rail 8 is positioned in the locking space.

[0098] According to an embodiment the guide rail clamp 6 comprises alocking screw 6.3 to provide a clamping force that moves the movable cam 6.2 toward the fixed counterpart 6.1 when the guide rail 8 is positioned in the locking space.

[0099] According to an embodiment the guide rail clamp 6 lockable to the guide rail 8 by clamping the guide rail 8 between the sides of the locking space.

[0100] The movable cam 6.2 may be unlocked or moved away from the clamping position via the locking screw 6.3 moving the movable jaw 62 in relation to the fixed jaw 61. The locking screw 6.3 may compress the spring when the movable cam 6.2 is moved away from the fixed counterpart 6.1.

[0101] A method for installing an elevator and providing a hoisting point at any height in the hoistway is described hereinafter.

[0102] Providing the installation time platform 20 vertically movable on guide rails 8 comprises installing parts of the following group: upright assemblies 10 on opposite guide rails 8; bottom beams 24, the synchronization bar 25; fixing brackets 33 for the man riding hoist 30; guide rail pockets 29; floor beams 24a and corner bars 24b; balustrades 24c; and the floor cover 21.

[0103] According to an embodiment the guide rail clamp 6 is adjustable for use with guide rails 8 having different size in different hoistways by selecting a fixed counterpart 6.1 with correct size according to the size of the guide rail 8.

[0104] According to an embodiment each upright assembly 10 is prepared by selecting a fixed counterpart 6.1 with correct size according to the size of the guide rail 8, and using the correct size of fixed counterpart in the guide rail clamps 6.

[0105] According to an embodiment each upright assembly 10 is prepared by selecting a correctly sized safety gear 5 according to the guide rail size.

[0106] According to an embodiment the buffer clamp 60 is adjustable for use with guide rails 8 having different size in different hoistways by selecting the fixed jaw 61 with correct size according to the size of the guide rail 8, i.e., according to the width of the guide rail nose.

[0107] According to an embodiment each upright assembly 10 is prepared by selecting a fixed jaw 61 with correct size according to the size of the guide rail 8, and using the correct size of fixed jaw in the buffer clamps 60.

[0108] The installation time platform 20 can be provided in the hoistway by first assembling upright assemblies 10 on guide rails 8 and on top of car buffer stands or on top of the buffer clamps 60 described above.According to an embodiment the uprights 10 are secured to the guide rails 8 with guide rail clamps 6 that are integrated in the vertical beams 23 of the uprights.

[0109] According to an embodiment the bottom beams 24 and the synchronization bar 25 are installed and the safety gear levers 26 are connected between the synchronization bar 25 and the safety gears 5.

[0110] According to an embodiment next may be installed the springs 27 between the synchronization bar 25 and the vertical beams 23, a rope fixing 28 for an overspeed governor rope, fixing brackets 33 for the man riding hoist 30, and guide rail pockets 29.

[0111] According to an embodiment the floor beams 24a are then installed on the upper bottom beams 24.

[0112] According to an embodiment the vertical corner bars 24b are installed on the horizontal floor beams 24a.

[0113] According to an embodiment the balustrade bars 24c are installed on the corner bars 24b and also the opposite vertical beams 23.

[0114] According to an embodiment the floor cover 21 is installed on the horizontal floor beams 24a.

[0115] According to an embodiment the man riding hoist 30 and the automatic safety gear trigger 19 are installed on respective fixing brackets 33.

[0116] According to an embodiment, a man riding hoist 30’ for an elevator car or other heavy load is supported below the installation time platform 20 by the lifting point.

[0117] According to an embodiment the lifting point chains 43 are connected under the installation time platform 20 at the lifting point attachment 40 such as two adjacent plates having a secured load-bearing pin 41 therebetween. Preferably said connection is made via an openable and closable connection element 42 which is secure for heavy loads, such as a shackle.

[0118] According to an embodiment the diverting pulley 44 and the lower hoist rope 3T are hung from the lifting point chains 43.

[0119] According to an embodiment, the installation time platform 20 is driven to any desired height in the hoistway, for example as high as possible in the hoistway, parked and secured for example by a parking chain.

[0120] According to an embodiment when the installation time platform has been moved to a desired height, the upright 10 guide rail clamps 6 are tightened.According to an embodiment when the installation time platform has been moved to a desired height, the safety gears 5 are engaged, for example by operating the automatic safety gear trigger 19.

[0121] According to an embodiment when the installation time platform has been moved to a desired height, the guide rail clamps 6 are tightened and the safety gears 5 are engaged, tension from the installation time platform hoist rope 31 is released, for example by driving down the man riding hoist 30.

[0122] According to an embodiment the operator moves away from the installation time platform when it is used as a lifting point.

[0123] According to an embodiment, the man riding hoist 30’ is installed in connection with the lower hoist rope 3T below the installation time platform 20 for lifting the car or other heavy loads, when the installation time platform has been moved to a desired height, the guide rail clamps 6 are tightened and the safety gears 5 are engaged, and tension from the installation time platform hoist rope 31 is released.

[0124] According to an embodiment, a pulling test is made for the lifting point chains, diverting pulley and man riding hoist.

[0125] According to an embodiment the overspeed governor rope / belt passes in operational state through an overspeed governor fixing 28 linked with the brake synchronization bar 25 lever 26, and the safety gears 5 will be activated at a predetermined overspeed of the overspeed governor rope / belt relative to the overspeed governor in the hoistway.

[0126] According to an embodiment the method for installing an elevator comprises:

[0127] providing an installation time platform 20 vertically movable on guide rails 8 arranged in an elevator hoistway 1; the installation time platform comprising a frame 22;

[0128] suspending the installation time platform 20 from a support structure in the hoistway 1 by a man riding hoist 30 with a hoist rope 31 movable by the man riding hoist;

[0129] providing the frame 22 with upright assemblies 10 and arranging said upright assemblies movable and lockable on opposite guide rails 8,

[0130] providing each upright assembly 10 with a vertical beam 23; and with a guide rail clamp 6 and a safety gear 5 mounted to said vertical beam; and arranging a lifting point in connection with lower parts of the opposite vertical beams 23.According to an embodiment arranging the lifting point below horizontal parts of the frame 22.

[0131] According to an embodiment arranging the lifting point in connection with the vertical beams 23 comprises mounting a lifting point attachment 40 to the vertical beam 23.

[0132] According to an embodiment providing the lifting point attachment with two adjacent plates supporting a load-bearing pin 41.

[0133] According to an embodiment providing the lifting point with a lifting point chain 43.

[0134] According to an embodiment providing the lifting point with an openable and closable connection element 42 between the load-bearing pin 41 and the lifting point chain 43.

[0135] According to an embodiment providing the lifting point with a diverting pulley 44 and a lower hoist rope 3T which are supported by the lifting point chains 43.

[0136] According to an embodiment providing the arrangement with a man riding hoist supported by the lifting point.

[0137] According to an embodiment providing the installation time platform 20 vertically movable on guide rails 8 comprises installing the following parts: upright assemblies 10 on opposite guide rails 8; bottom beams 24; a synchronization bar 25; fixing brackets for the man riding hoist 33; guide rail pockets 29; horizontal floor beams 24a and vertical corner bars 24b; balustrade bars 24c; and a floor cover 21.

[0138] 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

CLAIMS1. An elevator installation arrangement (200), comprising an installation time platform (20) vertically movable on guide rails (8) arranged in an elevator hoistway (1);the installation time platform being suspendable from a support structure in the hoistway (1) by a man riding hoist (30) with a hoist rope (31) movable by the man riding hoist;the installation time platform comprising a frame (22) which comprises upright assemblies (10) arranged movable and lockable on opposite guide rails (8);each upright assembly (10) comprises a vertical beam (23); and a guide rail clamp (6) and a safety gear (5) mounted to said vertical beam; wherein the installation time platform comprises a lifting point arranged in connection with lower parts of the opposite vertical beams (23).

2. The arrangement according to claim 1, wherein the lifting point is arranged below horizontal parts of the frame (22).

3. The arrangement according to claim 1 or 2, wherein the lifting point comprises a lifting point attachment (40) mounted to the vertical beam (23); and preferably the lifting point comprises a load-bearing pin (41) supported by two adjacent plates comprised by the lifting point attachment; and / orpreferably the lifting point comprises a lifting point chain (43); and / or preferably the lifting point comprises an openable and closable connection element (42) between the load-bearing pin (41) and the lifting point chain (43); and / orpreferably the lifting point comprises a diverting pulley (44) and a lower hoist rope (3T) which are supported by the lifting point chains (43); and / or preferably the arrangement comprises, supported by the lifting point, a man riding hoist (30’).

4. The arrangement according any of claims 1 to 3, wherein each upright assembly (10) comprises a downwards facing buffer (7) mounted to the vertical beam (23).

5. The arrangement according to claim 1 , wherein each of the upright assemblies comprises rollers (9) for engaging with the guide rail (8).

6. The arrangement according to any of claims 1 to 5, comprising a man riding hoist (30) to support and vertically move the installation time platform (20) in the hoistway (1).

7. The arrangement according to any of claims 1 to 6, wherein the safety gear (5) is activatable by an overspeed governor, when the speed of the installation time platform exceeds a predetermined speed of the overspeed governor.

8. The arrangement according to any of claims 1 to 7, wherein the support structure in the hoistway comprises at least one of the following: a hoistway ceiling; or a protection deck arranged in the hoistway; or a hoisting / supporting point tool arranged in the hoistway.

9. The arrangement according to any of claims 1 to 8, wherein the installation time platform (20) is suspended 1:1 or 2:1 by the man riding hoist (30).

10. The arrangement according to any of claims 1 to 9, wherein the frame (22) comprises horizontal bottom beams (24), and opposite vertical beams (23) connected to the bottom beams; andpreferably the installation time platform (20) comprises a floor cover (21) co-operating with the frame (22).

11. The arrangement according to any of claims 1 to 10, wherein the arrangement comprises buffer clamps (60) secured on the opposing guide rails (8) for supporting an above resting installation time platform (20); and preferably buffers (7) comprised by the installation time platform (20) are configured to rest on the buffer clamps (60) secured on any desired height in the hoistway.1612. The arrangement according to any of claims 1 to 11, wherein the guide rail clamp (6) is adjustable for use with guide rails (8) having different size in different hoistways; and / orwherein the buffer clamp (60) is adjustable for use with guide rails (8) having different size in different hoistways.

13. A method for installing an elevator comprising:providing an installation time platform (20) vertically movable on guide rails (8) arranged in an elevator hoistway (1); the installation time platform comprising a frame (22);suspending the installation time platform (20) from a support structure in the hoistway (1) by a man riding hoist (30) with a hoist rope (31) movable by the man riding hoist;providing the frame (22) with upright assemblies (10) and arranging said upright assemblies movable and lockable on opposite guide rails (8),providing each upright assembly (10) with a vertical beam (23); and with a guide rail clamp (6) and a safety gear (5) mounted to said vertical beam; andarranging a lifting point in connection with lower parts of the opposite vertical beams (23).

14. The method according to claim 13, wherein arranging the lifting point below horizontal parts of the frame (22).

15. The method according to claim 13 or 14, wherein providing the installation time platform (20) vertically movable on guide rails (8) comprises installing the following parts: upright assemblies (10) on opposite guide rails (8); bottom beams (24); a synchronization bar (25); fixing brackets for the man riding hoist (33); guide rail pockets (29); horizontal floor beams (24a) and vertical corner bars (24b); balustrade bars (24c); and a floor cover (21).

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