The object of the invention is an arrangement and a method during the construction time of an elevator in the manufacturing of the elevator, which elevator is preferably an. elevator to be installed in a building and applicable to passenger transport and/or freight transport, and with which elevator arrangement and method the elevator can be taken, into service use already during its construction.

BACKGROUND OF THE INVENTION

In connection with so-called jump-lifts, the elevator hoistway is taken into use already before the full length of the elevator hoistway has been completed. The top part of the elevator hoistway is constructed at the same time as an elevator car moving in the already completed bottom part of the elevator hoistway serves people on the lower floors of the building. In jump-lifts, the elevator car moving in the lower part of the elevator hoistway is supported and moved during the construction-time use suspended on hoisting ropes that are supported by a supporting platform in the elevator hoistway, which ropes are moved with a hoisting machine that is usually supported on the supporting platform. The installation work in the parts of the elevator hoistway above this supporting platform is done from a movable platform or corresponding. When the part of the elevator hoistway under construction above the supporting platform has reached a sufficient stage' of completion, the completed part of the elevator hoistway can be taken into use. In this case a jump-lift is performed, wherein the supporting platform is raised to a higher position in the elevator hoistway, thus extending the operating area of the elevator car upwards. A worksite crane in use in the construction of the building or a lighter hoisting appliance to be supported on the building and arranged for the site for the purpose of the elevator installation can, for example, be used for the lifting. When the elevator hoistway has reached its final height, the jump-lift is converted into the final elevator of the building. In prior art the supporting platform is supported for the period of time between jump-lifts on the wall structures of the elevator hoistway resting on support elements comprised in the frame of the supporting platform, each of which elements can be moved in the lateral direction from the supporting platform into an extended position and back towards the platform into a retracted position, supported on which support elements in their extended position the frame of the supporting platform can be lowered to rest on top of the wall structures of the elevator hoistway, for the vertical supporting of the supporting platform in the elevator hoistway, and when in the retracted position of which support elements the supporting platform can be moved in the vertical direction in the elevator hoistway without being obstructed by the support elements. In prior-art solutions the transfer of the support elements between an extended and a retracted position is performed by manpower, which is laborious and possibly demanded moving onto the platform while it was being supported by a crane over an empty hoistway. Force was exerted on each support element individually and a user could accidentally have chosen a working location and/or working attitude that is not optimal from the safety perspective.

AIM OF THE INVENTION

The aim of the invention is to eliminate, among others, the aforementioned drawbacks of prior-art solutions. More particularly the aim of the invention is . to produce a construction-time arrangement of an elevator, which arrangement is safer and more efficient than before, and also a method in the manufacture of an elevator, which method is safer and more efficient than before.

SUMMARY OF THE INVENTION The invention is based on the concept that by disposing operating means, using which the support elements that can be moved in opposite lateral directions to each other into the ^• extended position are arranged to be transferred into the extended position and/or into the retracted position out of the extended position, on the same side of the frame, the support elements can be moved by working on a floor landing or corresponding and the supporting platform can thus be brought into the safe space without actually being on the supporting platform. At the same time, with this arrangement a user can be forced to work in a safe place. Another advantage is that the operating means can be connected with the power transmission or with a corresponding connection to the support elements, which can be ^" moved using the operating means, such that the power transmission or corresponding can be controlled from the user interface formed by the operating means to the support elements inside the frame of the supporting platform or safely supported on it in a controlled manner and simply. In this way the equipment, in. itself, can be formed to be such that it is not in the way, causing a risk of stumbling or entanglement in the parts of the hoistway, e.g. when transferring the supporting platform. With the solution the misuse of equipment and the opportunity of an employee to diverge from proven safe practice become more difficult. Generally speaking, with the solution therefore the working location and equipment can be controlled well.

In one basic embodiment of the concept according to the invention, the elevator arrangement comprises an elevator hoistway, an elevator car, and a movable supporting platform for supporting the elevator components in the elevator hoistway, which supporting platform comprises a supporting frame, which comprises a plurality of support elements, each of which can be moved in the lateral direction into a position extended from the platform and back towards the platform into a retracted position, supported on which support elements in their extended position the frame of the supporting platform can be lowered to rest on top of the wall structures of the elevator hoistway, for the vertical supporting, of the supporting platform in the elevator hoistway, and when in the retracted position of which support elements the supporting platform can be moved in the vertical direction in the elevator hoistway without being obstructed by the support elements, which plurality of support elements comprise support elements that can be moved in opposite lateral directions to each other into the extended position, in which elevator arrangement there is a floor landing on a side of the supporting frame. The ^' frame of the supporting platform comprises operating means on its floor landing side, using which operating means the support elements that can be moved in opposite lateral directions to each other into the extended position are arranged to be transferred into the extended position and/or out of the extended position into the retracted position. In the elevator arrangement there is a floor landing on a side of the supporting frame, from which floor landing the operating means can be operated. With the solution the aforementioned advantages are achieved. In a more refined embodiment of the concept according to the invention, the operating means form a user interface, using which the aforementioned support elements are arranged to be transferred. Moving to the side of the user interface is sufficient for using it.

In a more refined embodiment of the concept according to the invention, the operating means comprise power input means , via which power is arranged to be supplied for moving the aforementioned support elements. Thus, while working from a landing, the support elements of the beams pointing towards opposite directions can be activated or de-activated.

In a more refined embodiment of the concept according to the invention, the operating means comprise power input means , via which power is arranged to be supplied for moving the aforementioned support elements, which power input means comprise one or more shafts, which comprise the input end for power. By acting on the shaft movement can be simply produced for the support elements.

In a more refined embodiment of the concept according to the invention, the (frame of the) supporting platform comprises a power transmission, which is arranged to convert the rotational movement of the aforementioned shaft into pull/push to be exerted on the support elements, for moving each support element between a retracted and an extended position. By acting on the shaft thus movement can be simply produced for the support elements .

In a more refined embodiment of the concept according to the invention, the aforementioned shaft is a rotating shaft.

In a more refined embodiment of the concept according to the invention, a motorized power means, preferably a rotating device, most preferably a portable electrically-driven rotating device, is connected, or can be connected, to the power input means , more particularly to the input end for power comprised in said input means. By using a power means the support elements can be moved simply. No more than one power means is necessarily needed. In a more refined embodiment of the concept according to the invention, the aforementioned input end for power points in the lateral direction from the frame of the supporting platform. In this way the input end for power is simply and ergonomically accessible from the floor landing.

In a more refined embodiment of the concept according to the invention, the aforementioned one or more shafts are horizontal. In this way the input end for power is simply and ergonomically accessible from the floor landing.

In a more refined embodiment of the concept according to the invention, the aforementioned input end for power is at the height of the aperture of a floor landing. In this way the input end for power is simply and ergonomically accessible from the floor landing.

In a more refined embodiment of the concept according to the invention, the aforementioned input end for power points towards the aperture of the floor landing. In this way the input end for power is simply and ergonomically accessible from the floor landing .

In a more refined embodiment of the concept according to the invention, the power input means comprise two parallel shafts side by side, the input ends for power of which shafts point in the same direction. In this way the structure of the frame can be formed to be simple.

In a more refined embodiment of the concept according to the invention, the support elements that can be moved in opposite lateral directions to each other into the extended position can be transferred with the operating means into the extended position and/or into the retracted position independently of each other. In this way the moving of them can be done at different times and monitoring of the movement made easier. In a more refined embodiment of the concept according to the invention, the operating means comprise first power input means , with which power can be supplied for moving one or more support elements that can be moved in a first direction into the extended position, and second power input means with which power can be supplied for moving one or more support elements that can be moved in a second direction into the extended position. In this way the operation/moving of them can be done at different times and monitoring of the movement made easier. In a more refined embodiment of the concept according to the invention, the operating means comprise first power input means , which are connected to one or more support elements that can be moved in a first direction into the extended position, and second power input means , which are connected to one or more support elements that can be moved in a second direction (D2,D4) into the extended position. In this way a number of support elements can be moved simultaneously.

In a more refined embodiment of the concept according to the invention, the operating means comprise first power input means , which comprise a shaft having an input end, which is preferably of the type referred to above, and second power input means , which comprise a shaft having an input end, which is preferably of the type referred to above.

In a more refined embodiment of the concept according to the invention, the supporting frame comprises a plurality of beams that are rigidly fixed to each other, which beams are arranged such that towards each opposite lateral direction of the supporting platform points one, two or more beam ends of the supporting frame, at which beam end is a movable support element belonging to the aforementioned plurality of support elements.

In a more refined embodiment of the concept according to the invention, each aforementioned support element can be moved in the longitudinal direction of the beam, telescopically in relation to the beam, between an extended and a retracted position.

In a more refined embodiment of the concept according to the invention, the supporting frame supports the elevator hoisting machine fixed to the supporting frame.

In a more refined embodiment ₍ of the concept according to the invention, the supporting platform is the supporting platform of the elevator car below the supporting platform. In a more refined embodiment of the concept according to the invention, the support elements that can be moved in opposite lateral directions to each other into the extended position are arranged in the extended position to extend to immediately over support surfaces that are on opposite sides of the elevator hoistway, for enabling the supporting of the support elements on the aforementioned support surfaces . In a -more refined embodiment of the concept according to the invention, the support elements that can be moved in a first lateral direction into the extended position are arranged in the extended position to extend inside through the aperture of a floor landing, for enabling the supporting of the support elements on the upper surface of the aperture of the floor landing, and the support elements that can be moved in a second lateral direction, that is opposite to the first direction, into the extended position are arranged in the extended position to extend inside the wall pocket of the elevator hoistway on the opposite side of the aperture of the floor landing, or immediately over a support surface of a beam, for enabling the supporting of the support elements on the upper surface of the beam or of the wall pocket. In a more refined embodiment of the concept according to the invention, the counterweight is arranged to pass between the elevator car and the rear side of the elevator hoistway, which rear side is the side of the elevator hoistway opposite the aperture of the floor landing.

In a more refined embodiment of the concept according to the invention, the support elements that can be moved in opposite lateral directions to each other into the extended position are arranged in the extended position to extend to immediately over support surfaces that are on opposite sides of the elevator hoistway, for enabling the supporting of the support elements on the aforementioned support surfaces, which opposite sides of the elevator hoistway are the left and the right side of the elevator hoistway, as viewed from the landing.

In a more refined embodiment of the concept according to the invention,, the counterweight (CW) is arranged to pass between the elevator car and the left or right side of the elevator hoistway. Thus a space-efficient and robustly supporting solution is achieved.

In a more refined embodiment of the concept according to the invention, the frame of the supporting platform comprises a mechanical power transmission, which is arranged to convert the rotational movement of the power input means into pull/push to be exerted on the support elements, for moving the support elements between a retracted and an extended position.

In one basic embodiment of the concept according to the invention, in the method in the manufacturing of an elevator the supporting platform above the elevator car is lifted upwards in the elevator hoistway, and the range of movement of. the elevator car is changed to extend farther upwards in the elevator hoistway, which elevator is arranged to comprise an elevator hoistway, an elevator car, a movable supporting platform for supporting the elevator components in the elevator hoistway, which supporting platform comprises a supporting frame, which comprises a plurality of support elements, each of which can be moved in the lateral direction into a position extended from the platform and · back towards the platform into a retracted position, supported on which support elements in their extended position the frame of the supporting platform can be lowered to rest on top of the wall structures of the elevator hoistway, for the vertical supporting of the supporting platform in the elevator hoistway, and when in the retracted position of which support elements the supporting platform can be moved in the vertical direction in the elevator hoistway without being obstructed by the support elements, and which plurality of support elements comprises support elements that can be moved in opposite lateral directions to each other into the extended position. In the method the supporting platform is lifted in the elevator hoistway when the support elements are in the retracted position, after which the support elements are moved into the extended position and the frame of the supporting platform is lowered to rest on top of the wall structures of the elevator hoistway supported by the support elements in the extended position for the vertical supporting of the supporting platform in the elevator hoistway. In the method support elements that can be moved in opposite lateral directions to each other into the extended position are moved into the ^" extended position and/or into the retracted position from a floor landing on a side of the supporting frame. Thus the working is safe.

In a more refined embodiment of the concept according to the invention, the aforementioned support elements that can be moved in opposite lateral directions to each other into the extended position are moved into the extended position and/or out of the extended position from a floor landing on a side of the supporting frame using the operating means comprised in the floor landing side of the frame of the supporting platform.

In a more refined embodiment of the concept according to the invention, before the supporting platform is lifted in the elevator hoistway the support elements that can be moved in opposite lateral directions to each other into the extended position are moved into the retracted position from a floor landing on a side of the supporting frame.

In a more refined embodiment of the concept according to the invention, after the aforementioned lifting before the frame of the supporting platform is lowered to rest on top of the wall structures of the elevator hoistway, the aforementioned support elements that can be moved in opposite lateral directions to each other into the extended position are moved into the extended position from a floor landing on a side of the supporting frame.

In a more refined embodiment of the concept according to the invention, in the aforementioned lifting the supporting platform is lifted the length of at least one floor-to-floor distance.

In a more refined embodiment of the concept according to the invention, before the support elements that can be moved in opposite lateral directions to each other into the extended position are moved into the retracted position from a floor landing on a side of the supporting frame, the supporting platform is lightened or transferred slightly upwards to facilitate the moving of the support elements.

In a more refined embodiment of the concept according to the invention, after the supporting platform is vertically supported in the elevator hoistway, the elevator car is taken into use to serve passengers and/or to transport goods.

In a more refined embodiment of the concept according to the invention, the elevator car is used to serve passengers and/or to transport goods, and that before the aforementioned lifting, the elevator car is removed from the aforementioned use.

In a more refined embodiment of the concept according to the invention, working on the floor landing that is on a side of the supporting frame, power is supplied to the power input means comprised in the (operating means on the floor landing side of) the supporting frame, via which power input means the aforementioned support elements can be moved.

In a more refined embodiment of the concept according to the invention, power is supplied by a motorized power means, which is preferably a rotating device, most preferably a portable electrically-driven rotating device, that is connected, or to be connected, to the power input means , more particularly to the input end for power comprised in them. In a more refined embodiment of the concept according to the invention, in the method the elevator arrangement is according to any of those described earlier in this patent application.

Some inventive embodiments are also presented in the descriptive section and in the drawings of the present application. The inveritive content in the application can also be defined differently than in the claims presented below. The inventive content may also consist of several separate inventions, especially if the invention is considered in the light of expressions or implicit sub-tasks or from the point of view of advantages or categories of advantages achieved. In this case, some of the attributes contained in the claims below may be superfluous from the point of view of separate inventive concepts. The features of the various embodiments of the invention can be applied within the framework of the basic inventive concept in conjunction with other embodiments. The additional features or procedures of each embodiment can also singly and separately from the other embodiments form a separate invention.

LIST OF FIGURES

In the following, the invention will be described in detail by the aid of some examples of its embodiments with reference to the attached drawings, wherein

Fig. 1 presents a diagrammatic side view of a construction-time elevator arrangement of an elevator in a building according to a first embodiment of the invention, with which elevator arrangement the method according to the invention can be implemented .

Fig. 2 presents ah A-A section of Fig. 1 as viewed from above. Fig. 3 presents in part the structure of the supporting frame of Figs. 1 and 2, in more detail and in three dimensions.

Fig. 4 presents a diagrammatic side view of a construction-time elevator arrangement of an elevator in a building according to a second embodiment of the invention, with which elevator arrangement the method according to the invention can be implemented.

Fig. 5 presents a B-B section of Fig. 4 as viewed from above. Fig. 6 presents the supporting frame of the supporting platform of Figs. 4 and 5 in more detail and in three dimensions.

Fig. 7 presents a detail of the frame.

DETAILED DESCRIPTION OF THE INVENTION Figs. 1 and 4 present elevator arrangements according to the invention. The elevator arrangements presented comprise an elevator hoistway 1 and an elevator car 2, which can move in the elevator hoistway 1 when the elevator is in use. The arrangement further comprises a movable supporting platform 3,3' for supporting the elevator components in the elevator hoistway 1. The guide rails (not shown) of the elevator car in the part of the elevator hoistway 1 below the supporting platform 3,3' are already fixed to the walls of the elevator hoistway 1. Figs.' 1 and 4 present the arrangements at the moment when the supporting platform is supported in its position and the elevator car is still in use to serve passengers. Above the supporting platform 3,3', where the elevator hoistway 1 is unfinished, the work to install the car guide rails can be performed, e.g. from a separate movable working platform. The supporting platform 3 can be moved with a hoist (not presented) from the position presented in Fig. 1 higher in the elevator hoistway, to where it can be supported after the lifting and the elevator car 2 can again be taken into use. During the lifting the elevator car 2 is removed from use. A number of these types of lifts can be performed until the range of movement of the elevator car 2 extends to the desired height in the hoistway, and during the times between consecutive lifts the elevator car is arranged to be taken into use for serving passengers. The supporting platform 3,3' comprises a supporting frame 4,4', which comprises a plurality of support elements 8 -8 ' ^{1 1 1} that are movable between a position extended from the supporting platform towards the side and a position retracted towards the platform and that enable the moving and re-supporting of the supporting platform, supported on which support elements in their extended position the frame of the supporting platform 4,4' can be lowered to rest on top of the wall structures of the elevator hoistway 1 in the manner presented in the figures, for the vertical supporting of the supporting platform 3,3' in the elevator hoistway 1, and when in the retracted position of which support elements the supporting platform 3 can be moved in the vertical direction in the elevator hoistway without being obstructed by the support elements, because the other fixed structures of the supporting platform are at the point of the free vertical projection of the hoistway, so they do not obstruct the vertical transfer of the platform. The aforementioned plurality .of support elements comprises support elements (8a, 8b ; 8a', 8b') that can be moved in opposite lateral directions (Dl and D2 ; D3 and D4) to each other into the extended position. The frame of the supporting platform comprises on one of its sides, more particularly on its floor landing (L) side, operating means (Α,Α'), using which the support elements (8a, 8b ; 8a' , 8b' ) that can be moved. in opposite lateral directions (Dl and D2 ; D3 and D4) to each other into the extended position are arranged to be transferred from the retracted position into the extended position and/or into the retracted position out of the extended position. The operating means (A, A') can be operated from the floor landing (L) on a side of the supporting frame (4,4'). The supporting platform is thus in the vertical direction at the point of the aforementioned floor landing, from where it is possible to reach to operate the operating means (A,A') . In this way the support elements can be transferred from a floor landing L that is on a side of the supporting frame (4,4') at any given time from the extended position presented in the figures into the retracted position, for lifting the supporting platform 3,3' in the direction presented by the arrow. Each aforementioned support element (8a, 8b ; 8a', 8b') can be supported on the wall structures of the elevator hoistway 1. The aforementioned wall structures can comprise fixed structures that form the wall of the elevator hoistway, such as e.g. the beams or concrete structures of the building. Preferably, as presented in the figures, the wall structure of the elevator hoistway comprises pockets P in the concrete wall of the elevator hoistway, on which pockets at least a part of the support elements can be supported. The wall structure of the elevator hoistway also comprises apertures opening to a floor landing, on the surface of which aperture a part of the support elements can be supported. Support elements (8a, 8b ; 8a', 8b') that can be moved in opposite lateral directions (Dl and D2 or D3 and D4) to each other into the extended position are arranged in the extended position. to extend to immediately over support surfaces of wall structures that are on opposite sides of the elevator hoistway, for enabling the supporting of the support elements on the aforementioned support surfaces. In the embodiment 2 according to Figs. 1-3, the. wall structure of the elevator hoistway comprises pockets P, as presented in Fig. 2, on which pockets a part of the support elements can be supported as presented in the figures. The wall structure of the elevator hoistway also comprises apertures L opening to a floor landing, on the support surface facing upwards of which aperture a part of the support elements can be supported, as presented in the figures. The aforementioned operating means A comprised in the floor landing L side of the frame of the supporting platform form a user interface, using which the aforementioned support elements (8a, 8b) are arranged to be transferred. For this purpose the operating means A comprise (mechanical) power input means (I^ I ₂ ) , via which power is arranged to be supplied for moving the aforementioned support elements (8a, 8b) . These power input means comprise first power input means I _1# with which power can be supplied for moving the one or more support elements 8a that can be moved in a first direction Dl into the extended position, and second power input means I ₂ , with which power can be supplied for moving the one or more support elements 8b that can be moved in a second direction D2 into the extended position. The first and second power input means each comprise a shaft 13a, 13b, as presented in Figs. 2 and 3, which shaft comprises an input end for power. Each, aforementioned shaft 13a, 13b is a rotating shaft, the input end for power of which shaft points towards the aperture of a floor landing. The shafts are preferably horizontal but they could also be at an angle. They thus preferably point straight, or at an angle, laterally from the supporting frame, in which case it is easy to connect a rotating device to them. For this reason also the input end for power is at the height of the aperture of a floor landing L. The shafts 13a, 13b are preferably parallel shafts side by side as in the manner presented, the input ends for power of which shafts point in the same direction. They are preferably near, preferably less than 30 cm, at a horizontal distance from each other for forming a compact user interface. The supporting platform, preferably the frame 4 of it, additionally comprises a power transmission, which is arranged to convert the rotational movement of the aforementioned shafts into pull/push to be exerted on the support elements 8a, 8b, for moving each support element 8a, 8b between a retracted and an extended position. A motorized power means, preferably a rotating device, most preferably a portable electrically-driven rotating device, can be connected to the power input means I _lf I ₂ , more particularly to the input end for power. The device can be permanent or detachable, as desired. As presented in the figures, the power input means comprise first power input means which are connected to one or more support elements 8a that can be moved in a first direction (D1,D3) into the extended position, and second power input means I ₂ , which are connected to one or more support elements 8b that can be moved in a second direction D2 into the extended position. In this way the support elements 8a, 8b that can be moved in opposite lateral directions D1,D2 to each other into the extended position can be transferred with the operating means into the extended position and/or into the retracted position out of the extended position independently of each other. One advantage is that it is not necessary to simultaneously monitor the transfer of.-' the support elements on different sides of the hoistway to over their support surface, e.g. into the aforementioned pocket P. The power input means thus preferably comprise, in the manner presented, first and second power input means , but the solution does not necessarily need to be implemented in this way, but instead the power input can., if necessary, be implemented such that the power input shaft is connected to one or more support elements 8a, 8b that can be moved in both a first direction Dl as well as in a second direction D2 into the extended position. The solution most preferably comprises two support elements 8a, which are arranged in the extended position to extend inside through the aperture L of a floor landing, for enabling the supporting of the support elements 8a on the upper surface of the aperture of the floor landing L, and two support elements 8b that can be moved in a second lateral direction D2 , that is opposite to the first, into the extended position, which support elements are arranged in the extended position to extend inside the wall pocket P of the elevator hoistway on the side opposite the aperture of a floor landing L, for enabling the supporting of the support elements on the upper surface of the beam or of the wall pocket. If the material of the elevator hoistway is not ■concrete or the structure is otherwise different, each support element 8b can be supported immediately over a support surface of a beam of the wall of the elevator hoistway instead of on a pocket. In the solution the counterweight is most preferably arranged to pass between the elevator car and the rear side of the elevator hoistway, which rear side is the side of the elevator hoistway opposite the aperture of the floor landing L. The frame 4 comprises two support elements 8a, 8b that can be moved in each of the aforementioned lateral directions Dl and D2 into the extended position. The frame 4 of the supporting platform comprises a plurality of beams that are rigidly fixed to each other, which beams are arranged such that towards each opposite lateral direction Dl and D2 of the supporting platform point two beam ends of the supporting frame, at which beam end is a movable support element 8a, 8b belonging to the aforementioned plurality of support elements. These parallel beam ends that point towards a first and a second lateral direction (D1,D2) that are opposite to each other are at a horizontal distance from each other for preventing swaying. Each aforementioned support element 8a, 8b can be moved in the longitudinal direction of the beam, telescopically in relation to the beam, between an extended and a retracted position, but this could alternatively be implemented in a folding manner. The (frame of the) supporting platform comprises a mechanical power transmission, which is arranged to convert the rotational movement produced by the torque exerted on the power input means into pull/push to be exerted on the support elements 8a, 8b, for moving the support elements between a retracted and an extended position. Fig. 3 presents a frame of a supporting platform, partly sectioned so that the power transmission is visible. Some of the beams have been removed from sight from the figure in order to illustrate the structure. The power transmission comprises a gear 14a connected to an input shaft 13a for power, which gear is most preferably an angle transmission of the bevel-gear-pair type or a worm gear, and which transmits rotational movement to the two following shafts 15a. The rotational movement of each shaft 15a is transmitted to the shaft 16a following it via a gear 17a corresponding to the gear ■ 14a. The shaft 16a and the support element 8a form a stud bolt - - nut pair, with which the rotational movement of the shaft 16a is converted into push or into pull of the support element 8a. In a corresponding manner the rotational movement of the input shaft 13b for power is converted into push or into pull of the support element 8b. In the embodiment according to Figs. 4-6, the wall structure of the elevator hoistway comprises pockets P, as presented in Fig. 4, on which pockets a part of the support elements can be supported as presented in the figures. The wall structure of the elevator hoistway also comprises an aperture L (marked in Fig. 4 with a dashed line) opening to a floor landing. The aforementioned operating means A' comprised in the floor landing L side of the frame of the supporting platform form a user interface, using which the aforementioned support elements (8a', 8b') are arranged to be transferred. For this reason the operating means A' comprise - power input means ( 1 / I ₂ ' ) ' ^v ^- ^a which power is arranged to be supplied for moving the aforementioned support elements (8a', 8b'). These power input means comprise first power input means Ι _χ ' , with which power can be supplied for moving the one or more support elements 8a that can be moved in a first direction D3 into the extended position, and second power input means Ι ₂ ' , with which power can be supplied for moving the one or more support elements 8b that can be moved in a second direction D4 into the extended position. The first and second power input means each comprise a shaft 13a' , 13b' , as presented in Figs. 5 and 6, which shaft comprises an input end for power. Each aforementioned shaft 13a', 13b' is a rotating shaft, the input end for power of which shaft points towards the aperture of a floor landing. The shafts are preferably horizontal but they could also be at an angle. They thus preferably point straight, or at an angle, laterally from the supporting frame 4', in which case it is easy to connect a rotating device to them. For this reason also the input end for power is at the height of the aperture of a floor landing. The shafts 13a', 13b' are preferably parallel shafts side by side as in the manner presented, the input ends for power of which shafts point in the same direction. They are preferably near, preferably less than 30 cm, at a horizontal distance from each other for forming a compact user interface. The supporting platform 3', preferably the frame 4' of it, additionally comprises a power transmission, which is arranged to convert the rotational movement of the aforementioned shafts into pull/push to be exerted on the support elements 8a', 8b', for moving each support element 8a', 8b' between a retracted and an extended position. A motorized power means, preferably a rotating device, most preferably a portable electrically-driven rotating device can be connected to the power input means 1 , Ι ₂ ' , more particularly to the input end for power. The device can be permanent or detachable, as desired. As presented in the figures, the power input means comprise first power input means 1 , which are connected to one or more support elements 8a' that can be moved in a first direction D3 into the extended position and second power input means Ι ₂ ' , which are connected to one or more support elements 8b that can be moved in a second direction D4 into the extended position. In this way the support elements 8a', 8b' that can be moved in opposite lateral directions D3 , D4 to each other into the extended position can be transferred with the operating means into the extended position and/or into the retracted position out of the extended position independently of each other. One advantage is that it is not necessary to simultaneously monitor the transfer of the support elements on different sides of the hoistway to over their support surface, e.g. into the aforementioned pocket P. The power input means thus preferably comprise, in the manner presented, first and second power input means , but the solution does not necessarily need to be implemented in this way, but instead the power input can, if necessary, be implemented such that the power input shaft is connected to one or more support elements 8a', 8b' that can be moved in both a first direction D3 as well as in a second direction D4 into the extended position. The solution comprises support elements (8a', 8b') that can be moved in opposite lateral directions (D3 and D4) to each other into the extended position, which elements are arranged in the extended position to extend to immediately over support surfaces that are on opposite sides of the elevator hoistway, for enabling the supporting of the support elements on the aforementioned support surfaces,, which opposite sides of the elevator hoistway are the left and the right side of the elevator hoistway (1) , as viewed from the floor landing L. The frame 4' thus most preferably comprises two support elements 8a', 8b' that can be moved in each of the aforementioned lateral directions D3 and D4 into the extended position, which elements are arranged in the extended position to extend inside the wall pocket P. If the wall material of the elevator hoistway is not concrete pr the structure is otherwise different, each support element 8a, 8b can be supported immediately over a support surface of a beam of the wall of the elevator hoistway instead of on a pocket. In the solution the counterweight C is most preferably arranged to pass between the elevator car 2 and the right or left side of the elevator hoistway 1. Thus the length direction of the supporting platform is advantageous because its length direction passes in sequence over the elevator car and the counterweight, and the balance is simple to control. The frame 4' comprises 8a', 8b'. The frame 4' of the supporting platform comprises a plurality of beams that are rigidly fixed to each other, which beams are arranged such that towards each opposite lateral direction D3 and D4 of the supporting platform point two beam ends of the supporting frame 4', at which beam end is a movable support element 8a' ,8b' belonging to the aforementioned plurality of support elements. These parallel beam ends that point towards a first and a second lateral direction D3,D4 that are opposite to each other are at a horizontal distance from each other for preventing swaying. Each aforementioned support element 8a', 8b' can be moved in the longitudinal direction of the beam, telescopically in relation to the beam, between an extended and a retracted position, but this could alternatively be implemented in a folding manner. The (frame of the) supporting platform comprises a mechanical power transmission, which is arranged to convert the rotational movement produced by the torque exerted on the power input means into pull/push to be exerted on the support elements 8a', 8b', for moving the support elements between a retracted and an extended position. The power transmission of the frame 4' corresponds in principle to the power transmission of the frame of Figs. 1-3. Fig. 7 presents a sectioned part of the frame 4' of the supporting platform of Fig. 6. The power transmission comprises gears 14a' inside the frame 4' that are connected to an input shaft for power 13a' , which gears are each most preferably an angle transmission of the bevel -gear-pair type or a worm gear, and which transmit rotational movement to the two following shafts 15a' . The shaft 15a' and the support element 8a' form a stud bolt -nut pair, with which the rotational movement of the shaft 15a' is converted into push or into pull of the support element 8a' . In a corresponding manner the rotational movement of the input shaft 13b' for power is converted into push or into pull of the support element 8b' .

As presented in the figures, generally speaking the solutions are advantageous to implement such that the supporting frame 4,4' supports the elevator hoisting machine 5 fixed to the supporting frame, which hoisting machine is arranged when the elevator is in use between liftings of the supporting platform, i.e. between jump-lifts, to move the elevator car via the hoisting roping. The supporting platform 3 is most preferably the supporting platform of the elevator car 2 below the supporting platform 3, but the supporting platform could also be a platform supported by which the hoisting machine platform is lifted.

In the method according to the invention the elevator hoistway above the supporting platform is constructed when the elevator car of the supporting platform is already in use. When the construction of the elevator hoistway has progressed to a sufficient stage of completion, a jump-lift can be performed utilizing the arrangement presented above for changing the range of movement of the elevator car 2 in steps so that it reaches to higher in the elevator hoistway 1. This is arranged to be performed by lifting the supporting platform that is above , the elevator car upwards in the elevator hoistway 1.

After each jump-lift the platform 3 supporting the machinery 5 is supported in its position in the elevator hoistway 1 supported by the supporting frame 4, the support elements 8a, 8b or 8a', 8b' of which supporting frame have been made to extend to rest on the top surface of a load-bearing structure of the wall structures of the elevator hoistway 1. After this the elevator car 2 is moved back into use- to serve passengers and/or to transport goods. Preferably a number of jump-lifts of this type are performed, until the supporting platform 3 is at the final height of the elevator or close to said height. In this case the elevator is converted into the final elevator, leaving in place at least the construction-time guide rails, most of the hoistway structure, and most of the construction-time car and possibly also of the counterweight. In the method the arrangement for enabling the operation of the support elements from a floor landing is of the type presented earlier. In this way a jump- lift is enabled. The movable supporting platform (3,3') thus comprises a supporting frame (4,4'), which comprises a plurality of support elements (8a, 8b ; 8a', 8b'), each of which can be moved in the lateral direction into a pdsition extended from the platform and back towards the platform into a retracted position, supported on which support elements in their extended position the frame of the supporting platform can be lowered to rest on top of the wall structures of the elevator hoistway, for the vertical supporting of the supporting platform in the elevator hoistway, and when in the retracted position of which support elements the supporting platform (3,3') can be moved in the vertical direction in the elevator hoistway without being obstructed by the support elements, which plurality of support elements comprises support elements (8a, 8b ; 8a', 8b') that can be moved in opposite lateral directions (Dl and D2 ; D3 and D4) to each other into the extended position. In the method the elevator car (2) is used to serve passengers and/or to transport goods, after which after the upper parts of the elevator hoistway have reached a sufficient stage of completion, the elevator car (2) is removed from the aforementioned use. In the method the supporting platform (3,3') is lifted in the elevator hoistway when the support elements are in the retracted position, after which the support elements are moved into the extended position and the frame (4,4') of the supporting platform (3,3') is lowered to rest on top of the wall structures of the elevator hoistway supported by the support elements (8a, 8b ; 8a', 8b') in the extended position for the vertical supporting of the supporting platform (3,3') in the elevator hoistway (1). Before the supporting platform (3,3') is lifted in the elevator hoistway, the support elements (8a, 8b ; 8a', 8b') that can be moved in opposite lateral directions (Dl and D2 ; D3 and D4) to each other into the extended position are moved into the retracted position from a floor landing (L) on a side of the supporting frame (4,4') using the operating means (A, A') comprised in the floor landing (L) side of the frame (4,4') of the supporting platform (3,3') . In this way safe working is ensured. After the aforementioned lifting before the frame (4,4') of the supporting platform (3,3') is lowered to rest on top of the wall structures of the elevator hoistway, the aforementioned support elements (8a, 8b ; 8a', 8b') that can be moved in opposite lateral directions (Dl and D2 ; D3 and D4) to each other into the extended position are moved into the extended position from a floor landing (L) on a side of the supporting frame (4,4'), which floor landing is not presented i the figures and which floor landing is higher than the floor landing presented. In the aforementioned lifting the supporting platform (3,3') is lifted the length of at least one floor-to- floor distance.

To facilitate the moving of the support elements, before the support elements (8a, 8b ; 8a', 8b') that can be moved, in the manner mentioned, in opposite lateral directions (Dl and D2 ; D3 and D4) to each other into the extended position are moved into the retracted position from a floor landing (L) on a side of the supporting frame (4,4'), the supporting platform is lightened or transferred slightly upwards. After the supporting platform (3,3') is again vertically supported in the elevator hoistway (1) , the elevator car (2) is taken into use to serve passengers and/or to transport goods .

Moving of. the support elements is performed working on the floor landing L that is on a side of the supporting frame 4 such that power is supplied to the power input means (Ι ₁ ,.Ι ₁ ' ; Ι ₂ ,Ι ₂ ') comprised in the supporting frame (4,4'), via which means the aforementioned support elements (8a, 8b ; 8a', 8b') can be moved. Power is supplied by a motorized power means, which is preferably a rotating device, most preferably a portable electrically-driven rotating device, that is connected, or to be connected, to the power input means (Ι ₁ ,Ι ₁ ' ; I ₂ ,I ₂ '), more particularly to the input end for power comprised in them.

The operating means most preferably comprise mechanical power input means , i-n the manner presented. They could, however, form some other type of user interface. Such a type can be a control panel, which comprises buttons or corresponding for controlling actuators that are a permanent ., part of the frame of the supporting platform, with which buttons or corresponding the support elements can be moved. It is obvious to the person skilled in the art that the invention is not limited to the embodiments described above, in which the invention is described using examples, but that many adaptations and different embodiments of the invention are possible within the frameworks of the inventive concept defined by the claims presented below. For example, the support elements could be different to what is presented, e.g. folding.