Method for erecting a lift installation and lift installation suitable for carrying out the method

Abstract

A method for erecting an elevator system (1) in a building which is in its construction phase, in which the available lifting height of the elevator system is adapted to the increasing height of the building, a machine platform (10) which can be lifted and temporarily stopped is installed in the elevator shaft (2), an elevator drive (11) with a drive wheel (12) is arranged on the machine platform; an elevator car (3) and a counterweight (4) are suspended on the machine platform (10) by means of a sling (15), so that the elevator The car (3) and the counterweight (4) can be moved upward and downward along the guide rails in the elevator shaft (2) via a sling (15) by means of a drive wheel (12); a lifting platform (17) is installed above the machine platform (10) and can be lifted and temporarily stopped in the elevator shaft (2); when the available lifting height of the elevator car should be adapted to the current height of the elevator shaft (2), the machine platform (10) with the elevator car (3) or the counterweight (4) is lifted by means of the lifting platform (10); and Before raising the machine platform (10), the hoisting platform (17) is raised to a higher level by means of a construction crane (40) or another lifting device (35); and the hoisting platform (17) is equipped with a rope fall arrester (25.1), which comprises a safety rope (31) arranged between the hoisting platform (17) and a rope pulley support (26) fixed above the hoisting platform in the elevator shaft (2) according to the principle of a pulley block with at least two load-bearing rope sections, wherein a first load-bearing rope section of the safety rope (31) is fixed to the hoisting platform (17) or fixed above the hoisting platform in a fixed position, and a last load-bearing rope section is guided through a rope stop (30) fixed to the hoisting platform (17), and when the speed of the last load-bearing rope section relative to the rope stop (30) exceeds a predetermined limit, the last load-bearing rope section is locked by means of the rope stop, thereby preventing the hoisting platform (17) from being lowered further.

Description

Technical Field

[0001] The invention relates on the one hand to a method for erecting an elevator installation in a building which is in its construction phase, in which method the available lifting height of the elevator installation is adapted to the increasing height of the building, and on the other hand to an elevator installation suitable for carrying out the method. Such an elevator installation generally comprises a machine platform which can be moved along an elevator shaft and can be temporarily stopped in the elevator shaft and has an elevator drive, and such an elevator installation comprises at least one elevator car which is suspended on the machine platform by means of a sling and is driven by the elevator drive. During the installation of the elevator installation, the available lifting height of the elevator car is adapted from time to time to the increasing height of the building in that at least the machine platform carrying the elevator car is raised to a higher level by means of a lifting platform which is temporarily fixed above the machine platform. Background Art

[0002] WO2010 / 100319 discloses such an elevator installation and such a method, wherein an elevator car and a counterweight are suspended by means of a flexible traction mechanism on a machine platform that can be lifted and temporarily fixed in the elevator shaft. The traction mechanism is guided via a drive wheel of the elevator drive so that the traction mechanism is driven by the drive wheel and the elevator car and the counterweight can therefore move upward and downward in the elevator shaft in opposite directions to each other. As the height of the building increases, the machine platform is raised from time to time to a higher level and fixed there in the elevator shaft. Thus, the elevator installation can, on the one hand, transport people and materials to the current uppermost area of ​​the building in its construction phase, and on the other hand, users from other floors located below and already completed, as well as their furniture, for example, can also be transported by means of the elevator installation.

[0003] In order to be able to lift the machine platform, a lifting platform is mounted above the machine platform, which can also be lifted in the elevator shaft and can be temporarily fixed. A set of deflection wheels is mounted on the lifting platform and on the machine platform, wherein between the deflection wheel set of the lifting platform and the deflection wheel set of the machine platform, multiple lifting ropes are arranged in such a way that the machine platform can lift the base platform by means of two rope pulling devices mounted on the machine platform. Before each lifting of the machine platform, the lifting platform needs to be brought to a higher level in the elevator shaft. This is done with the help of a crane, which is fixed to a further load-bearing structure that can be moved and fixed in the elevator shaft, and the lifting platform can be lifted by means of the lifting ropes.

[0004] The risk of the machine platform falling while it is being raised is usually reduced by equipping the machine platform with an anti-fall brake, which acts on the guide rails of the elevator car on which the machine platform is also guided. If the maximum permissible lowering speed is exceeded under certain circumstances, the anti-fall brake is activated and the machine platform is stopped by means of the braking action between the guide rails and the anti-fall brake.

[0005] When the lifting platform is lifted, there is also the risk that the lifting platform falls into the elevator shaft. However, the lifting platform cannot be guided on the guide rails, because in the uppermost region of the elevator shaft, in which the lifting platform is positioned before the machine platform is lifted, the guide rails are not yet installed at the time of lifting the lifting platform. Therefore, the anti-fall brake as a fall protection cannot be used. Summary of the invention

[0006] The object of the invention is to provide a method and a lifting device of the type mentioned above suitable for carrying out said method, wherein the risk of the lifting platform falling and the risk of accidents to the riggers when lifting the lifting platform are minimized.

[0007] The solution to this object lies, on the one hand, in a method for setting up an elevator system in an elevator shaft of a building that is in the construction stage, in which the available lifting height of the elevator system is adapted to the increasing height of the building, wherein a machine platform that can be raised and temporarily stopped along car guide rails is installed in the elevator shaft, an elevator drive machine with drive wheels is arranged on the machine platform, an elevator car and a counterweight are suspended on the machine platform by means of a sling, the sling is guided at least via the drive wheels of the elevator drive machine so that the elevator car and the counterweight can be moved upward and downward in the elevator shaft in opposite directions by means of the drive wheels via the sling, a lifting platform that can be raised and temporarily stopped in the elevator shaft is installed above the machine platform, and when the available lifting height of the elevator car is to be adapted to the current height of the elevator shaft, the machine platform, which is usually still The elevator car connected to it is lifted together. Before the machine platform is lifted, the lifting platform is lifted to a higher level by means of a construction crane or other lifting equipment, and the lifting platform is equipped with a rope fall protection device, which includes a safety rope, which is arranged between the lifting platform and a rope pulley support fixed in the elevator shaft above the lifting platform according to the principle of a pulley block with at least two load-bearing rope sections, wherein the first load-bearing rope section of the safety rope is fixed on the lifting platform or fixed above the lifting platform in a fixed position, and the last load-bearing rope section is guided through a rope stop device fixed on the lifting platform. When the speed of the last load-bearing rope section relative to the rope stop device exceeds a predetermined limit, the last load-bearing rope section is locked by means of the rope stop device, thereby preventing the lifting platform from descending further.

[0008] The sections of the safety rope arranged according to the pulley principle are referred to as load-bearing rope sections, which, after activation of the rope fall arrest device or its rope stop, transfer respectively identical parts of the total braking force occurring during the fall arrest between the rope pulley support and the hoisting platform. Commercially available devices (e.g. "Bloc-Stop") can be used as rope stops.

[0009] With the method according to the invention or the elevator installation according to the invention, which comprises the described rope fall arrest device for a hoisting platform, the requirement of minimizing the risk of a hoisting platform falling can be met with relatively little effort, even when the hoisting platform has to be positioned in the uppermost area of ​​the elevator shaft which does not yet have guide rails.

[0010] In the following, advantageous, supplementary or alternative designs and improvements of the invention are described.

[0011] In an advantageous embodiment of the method according to the invention, the load-bearing rope sections of the safety rope are arranged in such a way that, when the rope arrester is activated, the line of action of the resultant rope forces of all load-bearing rope sections passes approximately through the center of gravity of the lifting platform. By means of this measure, it is possible to achieve that when a lifting platform moving downwards at an impermissibly high speed is stopped by means of the rope arrester, the lifting platform, which is not guided on the guide rails, does not tip over but maintains its horizontal position. Injuries to the riggers and damage to the lifting platform and the elevator shaft wall can thus be avoided.

[0012] In another possible embodiment of the method according to the invention, the entire safety rope of the rope fall arrester is arranged in such a way that it runs completely outside a free space extending in an upward direction above the center of gravity of the hoisting platform, which free space enables the crane hook of the construction crane to be lowered onto a coupling element mounted on the hoisting platform above the center of gravity.

[0013] This arrangement of the safety rope allows the crane rope to be lowered vertically unhindered to the center of gravity of the hoisting platform and allows the crane rope to be coupled to a coupling element present on the hoisting platform at or above its center of gravity.

[0014] In a further possible embodiment of the method according to the invention, the free space is dimensioned in such a way that a cylinder with a diameter of at least 0.4 m can be arranged in the free space, extending upwards from the center of gravity of the lifting platform.

[0015] This also makes it possible to lower the crane hook sheave assembly with the crane hook arranged thereon to the coupling element present on the lifting platform.

[0016] In another possible embodiment of the method according to the invention, the sheave support is fastened to a protection platform which is vertically displaceable and fixable above the hoisting platform in the elevator shaft.

[0017] This is a particularly advantageous solution for fastening the sheave support in the elevator shaft, since such a protective platform must be present anyway in order to protect the riggers from falling objects.

[0018] In another possible embodiment of the method according to the invention, the protective platform is provided with a passage arranged in the above-mentioned free space region, through which the crane hook is lowered to the coupling element on the lifting platform.

[0019] In another possible design of the method according to the invention, the rope pulley support is equipped with four vertically arranged and four horizontally arranged deflection wheels. Here, the installation position of the deflection wheels is related to the position of the rope pulley plane along the vertical or horizontal definition. In this design variant, the safety rope is guided through these deflection wheels and through at least one load-bearing wheel of the load-bearing wheel structure connected to the lifting platform, so that the safety rope forms four load-bearing rope sections and is distributed completely outside the free space. The advantage of this embodiment is that all the connection points between the rope fall arrester and the lifting platform are close to the reference plane extending vertically through the center of gravity of the lifting platform, thereby providing more available space for assemblers and auxiliary devices on both sides of the reference plane.

[0020] In another possible embodiment of the method according to the invention, the rope pulley support is equipped with only four vertically arranged deflection wheels, wherein the safety rope is guided through these deflection wheels and through at least one load-bearing wheel of a load-bearing wheel arrangement coupled to the lifting platform, so that the safety rope forms four load-bearing rope sections and runs completely outside the free space. With this embodiment, very low production costs can be achieved, and more available space is provided laterally of the above-mentioned reference plane extending vertically through the center of gravity of the lifting platform.

[0021] In another feasible design of the method according to the present invention, the safety rope is guided vertically upward from a safety rope fixing point on the lifting platform relative to a reference plane extending vertically through the center of gravity of the lifting platform to a first deflection wheel which is vertically erected and arranged in a rope pulley support perpendicular to the reference plane; after the first deflection wheel, the rope is guided perpendicularly to the reference plane and away from the reference plane to a horizontally arranged second deflection wheel; after the second deflection wheel, the rope is guided horizontally and parallel to the vertical reference plane to a horizontally arranged third deflection wheel; after the third deflection wheel, the rope is guided perpendicularly to the reference plane and toward the reference plane to a fourth deflection wheel which is vertically erected and arranged perpendicular to the reference plane; after the fourth deflection wheel, the rope is guided vertically downward to a load-bearing wheel structure connected to the lifting platform, the load-bearing wheel structure The invention comprises at least one load-bearing wheel, the wheel plane of which is arranged vertically and transversely to the reference plane, and is guided vertically upward to a fifth deflection wheel which is vertically erected and arranged perpendicularly to the reference plane in a rope pulley support behind the load-bearing wheel structure, and is guided vertically to a sixth deflection wheel which is horizontally arranged perpendicularly to the reference plane and away from the reference plane behind the fifth deflection wheel, and is guided horizontally and parallel to the vertical reference plane to a seventh deflection wheel which is horizontally arranged and opposite to the second deflection wheel in a mirror-symmetrical manner with respect to the reference plane behind the sixth deflection wheel, and is guided perpendicularly to the reference plane and toward the reference plane to an eighth deflection wheel which is vertically erected and arranged perpendicularly to the reference plane behind the seventh deflection wheel, and is guided vertically downward to a rope stop device fixed on the lifting platform behind the eighth deflection wheel.

[0022] In another possible design of the method according to the invention, the safety rope is guided vertically upward relative to a reference plane extending vertically through the center of gravity of the lifting platform above the lifting platform, starting from a safety rope fixing point on the lifting platform, to a first deflection wheel of a rope pulley support which is vertically upright and arranged parallel to the reference plane, after the first deflection wheel, guided horizontally and parallel to the reference plane to a second deflection wheel which is vertically upright and arranged parallel to the reference plane, after the second deflection wheel, guided vertically downward to a load-bearing wheel structure connected to the lifting platform and having at least one load-bearing wheel which is vertically upright and arranged transversely to the reference plane, after the load-bearing wheel structure, guided vertically upward to a third deflection wheel of the rope pulley support which is vertically upright and arranged parallel to the reference plane, after the third deflection wheel, guided horizontally and parallel to the vertical reference plane to a fourth deflection wheel which is vertically upright and arranged parallel to the reference plane and is opposite to the first deflection wheel in a mirror-symmetrical manner relative to the reference plane, and after the fourth deflection wheel, guided vertically downward to a rope stop fixed to the lifting platform.

[0023] In another possible design of the method according to the invention, the lifting platform is equipped with a lifting device, in which the lifting ropes are guided upwards in the free space present above the lifting platform from a lifting rope holder on the lifting platform to a lifting rope deflection wheel of a lifting rope deflection device which is at least temporarily fixed in the free space, and from the lifting rope deflection wheel of the lifting rope deflection device they are guided downwards to a rope pulling device arranged on the lifting platform.

[0024] Here, the term "rope pulling device" is understood to mean a device suitable for pulling on a rope, in particular a steel cable, and used to move the rope, in particular a steel cable, in the direction of its longitudinal axis against resistance. The rope pulling device can be driven manually, preferably electrically.

[0025] The advantage of this design variant is that the process of raising the lifting platform and therefore also the machine platform can be carried out even if the construction crane is unavailable for a longer period.

[0026] In another possible embodiment of the method according to the invention, a hoisting rope deflection device comprising at least one hoisting rope deflection wheel is arranged in the region of the free space on the protective platform for lifting the hoisting platform by means of the hoisting device, and the hoisting rope deflection device is moved out of the region of the free space for lifting the hoisting platform by means of the construction crane. This embodiment variant has the advantage, on the one hand, that the fixing of the hoisting rope deflection device in the elevator shaft can be realized easily and cost-effectively, and, on the other hand, the arrangement of the hoisting rope deflection device in the aforementioned free space in the manner temporarily arranged in this embodiment variant makes it possible for the resultant of all load-bearing rope forces of the hoisting ropes of the hoisting device to pass through the center of gravity of the hoisting platform.

[0027] Another aspect of the invention relates to an elevator installation in an elevator shaft of a building in a construction phase, in which the available lifting height of the elevator installation can be adapted to the increased height of the building. The elevator installation is preferably designed so that it is suitable for carrying out the above method.

[0028] The elevator installation comprises a machine platform installed in the elevator shaft, which can be lifted and temporarily stopped along the car guide rails, wherein an elevator drive with a drive wheel is arranged on the machine platform. The elevator installation also comprises an elevator car and a counterweight, which are suspended on the machine platform by a sling, wherein the sling is guided at least by means of the drive wheel of the elevator drive so that the elevator car and the counterweight can be moved upward and downward in opposite directions along the guide rails in the elevator shaft via the sling by means of the drive wheel. The elevator installation also comprises a lifting platform installed in the elevator shaft above the machine platform, which can be lifted and temporarily stopped, and the machine platform with the elevator car or the counterweight is lifted by means of the lifting platform when the available lifting height of the elevator car should be adapted to the current height of the elevator shaft. In this case, the lifting platform is designed in such a way that the lifting platform is lifted to a higher level by means of a construction crane or other lifting device before the machine platform is lifted. The hoisting platform is equipped with a rope fall arrest device, which includes a safety rope, which is arranged or can be arranged between the hoisting platform and a rope pulley support fixed in the elevator shaft above the hoisting platform according to the principle of a pulley block with at least two load-bearing rope sections, wherein the first load-bearing rope section of the safety rope is fixed or can be fixed to the hoisting platform or fixed above the hoisting platform in a fixed position, and the last load-bearing rope section is guided or can be guided through a rope stop device fixed to the hoisting platform. When the speed of the last load-bearing rope section relative to the rope stop device exceeds a predetermined limit, the last load-bearing rope section is locked by means of the rope stop device, thereby preventing the hoisting platform from descending further.

[0029] The elevator installation can include a vertically movable and fixed protection platform above the hoisting platform in the elevator shaft, to which the sheave support is fixed. The protection platform can be provided with a through opening through which the crane hook can be lowered to the coupling element on the hoisting platform.

[0030] The rope pulley support can be equipped with four vertically arranged and four horizontally arranged deflection wheels, through which the safety rope is guided and through at least one load-bearing wheel of a load-bearing wheel structure connected to the lifting platform, so that the safety rope forms four load-bearing rope sections and runs completely outside the free space that enables the crane hook of the construction crane to be lowered to the coupling element.

[0031] Alternatively, the rope pulley support can be equipped with only four vertically arranged deflection wheels, through which the safety rope is guided and through at least one load-bearing wheel of a load-bearing wheel structure connected to the lifting platform, so that the safety rope forms four load-bearing rope sections and is distributed completely outside the free space.

[0032] The lifting platform can be equipped with a lifting device, which includes a lifting rope, a lifting rope holder, a lifting rope deflection wheel and a rope pulling device, wherein the lifting rope is guided upward from the lifting rope holder on the lifting platform in the free space above the lifting platform to the lifting rope deflection wheel of the lifting rope deflection device temporarily fixed in the free space, and is guided downward from the lifting rope deflection wheel to the rope pulling device arranged on the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The embodiments of the present invention are explained in more detail in the following description in conjunction with the accompanying drawings.

[0034] Figure 1 A cross section through an elevator shaft with an elevator device, the available lifting height of which can be adapted to the increased height of a building, is shown, comprising a machine platform, an elevator car with a counterweight suspended from the machine platform, and a lifting platform for lifting the machine platform, wherein the lifting platform is equipped with a rope fall arrester and a lifting device cooperating with a protection platform. In addition, a construction crane is shown, which, as an alternative to the lifting device, is used to lift the lifting platform.

[0035] Figure 2 Show according to Figure 1 Side view of a part of a lifting device of , which is shown in a section through this part, wherein a lifting platform for lifting a machine platform is shown, the lifting platform is equipped with a first variant of a rope fall arrest device that cooperates with a protection platform, and the lifting platform can be lifted only with the help of a construction crane.

[0036] Figure 3 Show according to Figure 1 Side view of a portion of a lifting device of which the portion is shown in section, showing a lifting platform for raising a machine platform, the lifting platform being equipped with a first variant of a rope fall arrest device and with a lifting device which also cooperates with a protective platform and can alternatively be lifted using a lifting device or a construction crane.

[0037] Figure 4 Show according to Figure 1Side view of a part of a lifting device of which the section is shown, wherein a lifting platform for lifting a machine platform is shown, which is equipped with a second variant of a rope fall arrest device and with a lifting device which also cooperates with a protective platform and can alternatively be lifted using a lifting device or a construction crane. DETAILED DESCRIPTION

[0038] Figure 1 An elevator installation 1 according to the invention and suitable for carrying out the method according to the invention is shown, which is installed in an elevator shaft 2 of a building which is in its construction phase. The elevator installation 1 is designed so that the available lifting height of the elevator car 3 of the elevator installation 1 can be adapted from time to time to the increasing height of the building or the elevator shaft 2.

[0039] The elevator installation 1 firstly comprises an elevator car 3 and a counterweight 4, which can be moved vertically in the elevator shaft 2 along car guide rails 6 or counterweight guide rails 7. Secondly, the elevator installation 1 comprises a machine platform 10, on which an elevator drive 11 with a drive wheel 12 and a deflection wheel 13 is mounted, and on which the elevator car 3 and the counterweight 4 are suspended in such a way that a sling 15 is guided at least via the drive wheel 12, so that the elevator car 3 and the counterweight 4 can be moved upward and downward in the elevator shaft 2 in opposite directions to each other by means of the drive wheel 12 via the sling 15 along the car guide rails 6 or the counterweight guide rails 7. The machine platform 10 is arranged in the elevator shaft 2 in a manner guided on the car guide rails 6, can be lifted in the elevator shaft 2 along the car guide rails 6, and can be temporarily stopped in the elevator shaft by means of horizontally extendable struts. Thirdly, the elevator installation 1 comprises a lifting platform 17 arranged above the machine platform 10, which can be moved and stopped vertically in the elevator shaft 2. The lifting platform 17 is used to lift the machine platform 10, which usually weighs several thousand kilograms. The lifting platform is dimensioned accordingly and is equipped with a sufficiently strong lift 18.

[0040] Of course, before each lifting of the machine platform 10, the lifting platform 17 itself needs to be raised to a higher level and fixed there, wherein the lifting platform 17 is lifted by means of a construction crane 40 or another combined lifting platform 10. Figure 3 The lifting device 35 explained in more detail realizes the lifting. In contrast to the machine platform 10, the lifting platform 17 is not guided on guide rails, because the lifting platform must temporarily stop in a region of the elevator shaft 2 that is not equipped with guide rails. The car guide rails 6 and the counterweight guide rails 7 are extended upwards each time before the machine platform 10 is lifted to the next higher stop position of the machine platform, which is preferably carried out starting from a mounting platform (not shown here) that can be installed between the machine platform 10 and the lifting platform 17.

[0041] Fourthly, the elevator installation 1 comprises a protection platform 20 which can be fixed in or on the elevator shaft 2, which is absolutely necessary for protecting the assemblers and the elevator installation from falling objects. In the elevator installation 1 according to the invention, the protection platform 20 also serves as a support mechanism for the sheave support 26 of the rope fall arrester 25.1, which serves as a fall arrest safety mechanism for the lifting platform 17. Figure 1 In the embodiment of the present invention, the safety rope fixing point 29, the rope stop device 30 and the safety rope 31 including four load-bearing rope sections can be regarded as components of the rope fall arrest device. The details and working principle of the rope fall arrest device 25.1 are described in detail below in conjunction with the following. Figure 2 In more detail.

[0042] The protection platform 20 may also form a support mechanism for a hoisting rope deflecting device 36 of a hoisting device 35 for hoisting the hoisting platform 17. The hoisting device 35 comprises a rope pulling device 37 mounted on the hoisting platform 17, which cooperates with a hoisting rope 38 and the hoisting rope deflecting device 36 in such a way that the hoisting device can be used to lift the hoisting platform 17 without using a construction crane.

[0043] Above the protective platform 20 or above the current upper end of the elevator shaft 2 there is shown a construction crane 40 , by means of which the lifting platform 17 can be lifted with less effort than the lifting device 35 , if such a construction crane is available, when the lifting platform is to be lifted.

[0044] In the lowermost part of the elevator shaft 2, a spreader storage 50 is shown in a niche in the shaft wall of the elevator shaft 2. The spreader storage serves to keep the required additional spreader length ready and to release it if necessary when the available lifting height of the elevator car 3 increases.

[0045] The adaptation of the elevator system 1 to the newly available higher height of the elevator shaft 2 is basically achieved in the following way: if necessary, the protective platform 20 is first raised to a higher level. This is usually carried out by means of a construction crane 50 or a crane suspended, for example, on a temporarily installed crossbeam. Subsequently, the lifting platform 17 is lifted by means of a construction crane or a lifting device 35 and fixed in the elevator shaft 2 at a height that allows the machine platform 10 to be transported to the planned new level by means of the lifting platform's hoist 18 and to be stopped there. Before the machine platform 10 is lifted, the counterweight 4 is positioned on its lower buffer, the elevator car 3 is coupled to the machine platform 10, and the fastening of the lifting device of the elevator car and the lifting device of the counterweight to the lifting device fixing points 52 on the machine platform 10 is disconnected. When the machine platform and the elevator car 3 are lifted, the lifting device quantity required for the lengthening of the lifting device 15 is automatically drawn from the lifting device storage 50. After the lifting process has been completed, the spreader 15 is fastened again at the spreader fastening point 52 and, after some adjustment work, the elevator system 1 is again ready with an available lifting height of the elevator car 3 adapted to the current building height.

[0046] On the left side, Figure 2 The uppermost region of the elevator shaft 2 is shown according to Figure 1 A side view of a portion of a lifting device of FIG. 1 is shown, and a section AA through this area is shown on the right. The device for raising the machine platform 10 ( Figure 1 ) and vertically movable, in a condition in which the lifting platform is lifted by means of a construction crane 40. In a first embodiment, the lifting platform is equipped with a rope fall arrester 25.1 which serves as a fall arresting mechanism for the lifting platform. The rope fall arrester 25.1 comprises a sheave support 26 in which a set of four vertically arranged and four horizontally arranged sheaves 27.1-27.8 are arranged. Here, the definition of the installation position vertically or horizontally is related to the position of the sheave plane. The sheave support 26 with the sheave is fixed to a protection platform 20 which is already positioned in or above the current uppermost region of the elevator shaft at the latest when the available lifting height of the elevator system 1 begins to be adapted to the current height 2 of the building or the elevator shaft. Furthermore, the rope fall arrester 25.1 comprises a safety rope fixing point 29 mounted on the lifting platform 17, a load-bearing wheel structure 32 connected to the lifting platform, a rope stop 30 and a safety rope 31 comprising four supporting rope sections 31.1-31.4.

[0047] In the rope fall arrest device 25.1 Figure 2In the embodiment shown in the drawing, the safety rope is arranged between the hoisting platform 17 and a rope pulley support 26 fixed in the elevator shaft above the hoisting platform according to the principle of a pulley block with at least four supporting rope sections 31.1-31.4, wherein the first load-bearing rope section 31.1 of the safety rope 31 is fixed to a rope section fixing point 29 installed on the hoisting platform 17 and the last load-bearing rope section 31.4 is guided through a rope stop 30 fixed to the hoisting platform.

[0048] In the case of a fall arrest of the lifting platform 17, in which the last load-bearing rope section 31.4 is moved relative to the rope stop (30) due to the sheave effect with four times the speed of the lifting platform, the last load-bearing rope section 31.4 is locked by means of the rope stop 30 after the speed of the last load-bearing rope section 31.4 relative to the rope stop exceeds a predetermined limit. This prevents the lifting platform (17) from falling further before the speed of the lifting platform reaches an impermissible level. Figure 2 The arrangement shown in FIG. 1 is such that, when the rope fall arrester is activated, the line of action of the resultant rope forces of all load-bearing rope sections of the rope fall arrester passes approximately through the center of gravity S of the hoisting platform 17, even if the safety rope 31, as described below, must be arranged completely outside the cylindrical free space extending vertically upwards above the center of gravity S, whereby the crane ropes of the construction crane 40 can be connected to the hoisting platform 17 at or above the center of gravity S. This is important for a smooth lifting of the hoisting platform, in particular because the hoisting platform is not guided on guide rails during the lifting.

[0049] Basis of safety rope 31 of rope fall arrest device 25.1 Figure 2 The arrangement is such that the entire safety rope is distributed outside a free space extending in an upward direction above the center of gravity S of the lifting platform 17. In order to lift the lifting platform 17 by means of a construction crane 40, the crane hook of the construction crane can be lowered through the free space to a coupling element (42) mounted on the lifting platform above the center of gravity. For this purpose, on the one hand, the safety rope 31 is arranged in such a way that a free space is created in which a cylinder with a diameter of at least 0.4 m can be arranged, extending upward from the center of gravity S of the lifting platform 17. On the other hand, for this purpose, the protection platform to which the rope pulley support 26 is fixed is provided with a closable opening 21.

[0050] In the case of a lifting platform 17 Figure 2In the rope fall arrester 25.1 shown in the figure, the following objectives are solved, and it is achieved that: on the one hand, the fall arrest force generated during the fall arrest process passes through the center of gravity S of the lifting platform, and on the other hand, a free space extending upward from the center of gravity S can be realized. In detail, this object is achieved in the following manner, that is, the safety rope 31 starts from the safety rope fixing point 29 on the lifting platform in relation to an imaginary reference plane extending vertically through the center of gravity S of the lifting platform 17, is guided vertically upward to a first deflection wheel 27.1 which is vertically erected and arranged perpendicularly to the reference plane in the rope pulley support 26, after the first deflection wheel, is guided perpendicularly to the reference plane and away from the reference plane to a horizontally arranged second deflection wheel 27.2, after the second deflection wheel, is guided horizontally and parallel to the vertical reference plane to a horizontally arranged third deflection wheel 27.3, after the third deflection wheel, is guided perpendicularly to the reference plane and toward the reference plane to a fourth deflection wheel 27.4 which is vertically erected and arranged perpendicularly to the reference plane, after the fourth deflection wheel, is guided vertically downward to a load-bearing wheel structure 32 connected to the lifting platform 17, the The carrying wheel structure includes at least one carrying wheel 33, the wheel plane of which is arranged vertically and transversely to the reference plane, and is guided vertically upward to the fifth deflection wheel 27.5 which is vertically upright and arranged perpendicularly to the reference plane in the rope pulley support after the carrying wheel structure 32, and is guided vertically to the sixth deflection wheel 27.6 which is horizontally arranged perpendicularly to the reference plane and away from the reference plane after the fifth deflection wheel, and is guided horizontally and parallel to the vertical reference plane to the seventh deflection wheel 27.7 which is horizontally arranged and mirror-symmetrically arranged to the second deflection wheel 27.2 relative to the reference plane after the sixth deflection wheel, and is guided vertically to the eighth deflection wheel 27.8 which is vertically upright and arranged perpendicularly to the reference plane after the seventh deflection wheel, and is guided vertically downward to the rope stop device 30 fixed on the lifting platform after the eighth deflection wheel.

[0051] exist Figure 2 In the embodiment, the lifting platform 17 is provided without Figure 1 The state of the lifting device 35 shown in FIG. 1 is shown either because the lifting device has been removed so that the crane ropes can be connected to the lifting platform to raise the lifting platform 17 , or because there is no lifting device at all, because the arrangement is such that the lifting platform only needs to be lifted using the construction crane 40 .

[0052] Similar to Figure 2 land, Figure 3 On the left, the currently uppermost area of ​​the elevator shaft 2 is shown according to Figure 1 A side view of a part of the lift installation 1. The lifting platform 17 is equipped with Figure 2 The first embodiment of the rope fall arrester 25.1 is shown. Figure 2 Differentiate, Figure 3 Shown with Figure 1 The lifting installation of the lifting device 35 shown in FIG. 1 is used to lift the lifting platform 17 when no construction crane is present or when the construction crane is not always available at the time of adapting the available lifting height of the lifting installation.

[0053] and Figure 2 Compared with the lifting device shown in FIG. , it is equipped with a lifting device 35, according to Figure 3 The described elevator installation 1 additionally comprises a hoisting rope deflecting device 36, a rope pulling device 37, a hoisting rope 38 and a hoisting rope holder 39. The hoisting rope deflecting device comprising at least one hoisting rope deflecting wheel 36.1 is advantageously fixed in the region of the passage 21 present therein, in a manner which is combined with the hoisting rope holder 39. Figure 1 The first load-bearing section of the hoisting rope 38 is fixed to the hoisting platform 17 by means of a hoisting rope holder 39. From the hoisting rope holder, the hoisting rope is guided vertically upward to at least one hoisting rope deflection wheel 36.1 of the hoisting rope deflection device 36, is wound around the hoisting rope deflection wheel at 180 degrees, and then guided downward as the second load-bearing section of the hoisting rope 38 to the rope pulling device 37 fixed to the hoisting platform 17, through which the hoisting rope passes. The two load-bearing sections of the hoisting rope 38 are connected in combination. Figure 2 The lifting platform 17 is provided with a lifting device 35, which is also described here, and is surrounded by the sections of the safety rope 31, and extends upward from the center of gravity S of the lifting platform. In the lifting device 35 described here, the combined force of the rope forces of the load-bearing sections of the lifting rope 38 passes through the center of gravity S of the lifting platform 17. In order to lift the lifting platform 17 by means of a construction crane 40, the lifting rope 38 and the lifting rope deflection device 36 need to be moved out of the free space. The rope pulling device 37 is advantageously electrically driven and comprises, for example, a friction wheel that is driven and pressed against the lifting rope, and the lifting rope 38 is pulled by the rope pulling device by means of the friction wheel. In this case, the lifting platform 17 is lifted by the mutual cooperation of the rope pulling device 37, the lifting rope 38, the lifting rope deflection device 36 and the lifting rope holder 39.

[0054] Similar to Figure 2 and Figure 3 , Figure 4 On the left, the currently uppermost area of ​​the elevator shaft 2 is shown according to Figure 1 1 and a section AA through this area is shown on the right. The lifting platform 17 is equipped with a lifting device 35 as already combined Figure 3 However, unlike Figure 3 The lift equipment shown in the figure is different, depending on Figure 4 The elevator installation of is equipped with a rope fall arrester 25.2 according to a second embodiment. In this embodiment, the rope pulley support 26 of the rope fall arrester 25.2 is equipped with only four vertically arranged deflection wheels 28.1-28.4, wherein the safety rope 31 is guided through these deflection wheels and through at least one load wheel 33 of a load wheel arrangement 32 connected to the lifting platform 17, so that the safety rope forms four load-bearing rope sections 31.1-31.4 and is distributed over its entire length outside the free space required for lowering the crane hook.

[0055] By means of a lifting platform 17, Figure 4 The rope fall arresting device 25.2 shown in the figure also solves the following object, namely, it is achieved that, on the one hand, the combined force of the fall arresting forces generated in all the load-bearing rope sections 31.1-31.4 during the fall arresting process passes through the center of gravity S of the lifting platform 17, and on the other hand, a sufficiently large free space extending upward from the center of gravity S can be achieved. In detail, this object is solved in that the safety rope 31 is guided vertically upward from the safety rope fixing point 29 installed on the lifting platform 17 in relation to an imaginary reference plane extending vertically through its center of gravity S above the lifting platform to a first deflection wheel 28.1 of the rope pulley support 26 that stands vertically and is arranged parallel to the reference plane, after the first deflection wheel, it is guided horizontally and parallel to the reference plane to a second deflection wheel 28.2 that stands vertically and is arranged parallel to the reference plane, after the second deflection wheel, it is guided vertically downward to a second deflection wheel 28.2 that is connected to the lifting platform 17 and has a There is at least one load-bearing wheel structure 32 with a load-bearing wheel 33 disposed transversely to the reference plane. Behind the load-bearing wheel structure 32, the rope is guided vertically upward to the third deflection wheel 28.3 disposed vertically and parallel to the reference plane of the rope pulley support 26. Behind the third deflection wheel, the rope is guided horizontally and parallel to the vertical reference plane to the fourth deflection wheel 28.4 disposed vertically and parallel to the reference plane and opposite to the first deflection wheel 28.1 in a mirror-symmetrical manner relative to the reference plane. Behind the fourth deflection wheel, the rope is guided vertically downward to the rope stop device 30 fixed on the lifting platform.

[0056] In order to obtain a sufficient cross section of the free space, in this embodiment, a slightly larger size is obtained for that part of the lifting platform 17 measured transversely to the imaginary reference plane, on which are arranged: the safety rope fixing point 29 and the rope stop device 30 of the rope fall arrester 25.2 as well as the lifting rope holder 39 and the rope pulling device 37 of the lifting device 35.

[0057] However, by means of a simpler embodiment, lower production costs can be achieved when sufficient space is available laterally of the reference plane extending vertically through the centre of gravity S of the lifting platform.

Claims

1. A method for erecting an elevator installation (1) in an elevator shaft (2) of a building which is in the construction phase, in which method the utilizable lifting height of the elevator installation is adapted to the increasing height of the building, wherein: A machine platform (10) is installed in the elevator shaft (2) and can be lifted and temporarily stopped along the car guide rail (6), and an elevator drive machine (11) with a drive wheel (12) is arranged on the machine platform. The elevator car (3) and the counterweight (4) are suspended on a machine platform (10) by means of a sling (15), wherein the sling is guided at least by means of a drive wheel (12) of an elevator drive machine (11), so that the elevator car (3) and the counterweight (4) can be moved upward and downward in opposite directions to each other by means of the drive wheel via the sling (15) along guide rails (6, 7) in the elevator shaft (2). A lifting platform (17) is mounted above the machine platform (10) and can be raised and temporarily stopped in the elevator shaft (2), by means of which the machine platform with the elevator car (3) or the counterweight (4) is lifted, while the utilizable lifting height of the elevator car is intended to be adapted to the current height of the elevator shaft (2), and Before raising the machine platform (10), the lifting platform (17) is raised to a higher level by means of a construction crane or other lifting device. It is characterized in that The hoisting platform (17) is equipped with a rope fall arrest device (25.1; 25.2), which comprises a safety rope (31), which is arranged between the hoisting platform (17) and a rope pulley support (26) fixed above the hoisting platform in the elevator shaft (2) according to the principle of a pulley block with at least two load-bearing rope sections (31.1-31.4), wherein the first load-bearing rope section (31.1) of the safety rope (31) is fixed to the hoisting platform (17) or fixed above the hoisting platform in a fixed position, and the last load-bearing rope section (31.4) is guided through a rope stop (30) fixed to the hoisting platform (17), by means of which the last load-bearing rope section (31.4) is locked after the speed of the last load-bearing rope section (31.4) relative to the rope stop (30) exceeds a predetermined limit, thereby preventing the hoisting platform from descending further.

2. The method according to claim 1, characterized in that The load-bearing rope sections (31.1-31.4) of the rope fall arrester (25.1; 25.2) are arranged so that when the rope fall arrester is activated, the line of action of the resultant force consisting of the rope forces of all the load-bearing rope sections (31.1-31.4) of the rope fall arrester (25.1; 25.2) substantially passes through the center of gravity (S) of the lifting platform (17).

3. The method according to claim 2, characterized in that The entire safety rope (31) of the rope fall arrester (25.1; 25.2) is arranged so that it runs completely outside a free space extending in an upward direction above the center of gravity (S) of the lifting platform (17), which free space enables the crane hook of the construction crane (40) to be lowered onto a coupling element (42) mounted on the lifting platform (17) above the center of gravity (S).

4. The method according to claim 3, characterized in that: The free space is dimensioned in such a way that a cylinder with a diameter of at least 0.4 m can be arranged in the free space, extending in an upward direction from the center of gravity (S) of the lifting platform (17).

5. The method according to claim 3 or 4, characterized in that: The rope pulley support (26) is fixed on a vertically movable and fixable protection platform (20) in the elevator shaft (2) above the lifting platform (17).

6. The method according to claim 5, characterized in that The protective platform (20) is provided with an opening (21) arranged in the region of the free space, through which the crane hook is lowered onto a coupling element (42) on the lifting platform (17).

7. The method according to claim 3 or 4, characterized in that: The rope pulley support (26) is provided with four vertically arranged and four horizontally arranged deflection wheels (27.1-27.8), wherein the safety rope is guided through the deflection wheels and through at least one load-bearing wheel (33) of a load-bearing wheel structure (32) connected to the lifting platform (17), so that the safety rope (31) forms four load-bearing rope sections (31.1-31.4) and is distributed completely outside the free space.

8. The method according to claim 3 or 4, characterized in that: The rope pulley support (26) is equipped with only four vertically arranged deflection wheels (28.1-28.4), wherein the safety rope (31) is guided through the deflection wheels and through at least one load-bearing wheel (33) of a load-bearing wheel structure (32) connected to the lifting platform (17), so that the safety rope forms four load-bearing rope sections (31.1-31.4) and is distributed completely outside the free space.

9. The method according to claim 8, characterized in that The safety rope (31) is guided vertically upward from a safety rope fixing point (29) on the lifting platform (17) relative to a reference plane extending vertically through the center of gravity (S) of the lifting platform to a first deflection wheel (27.1) arranged vertically and perpendicular to the reference plane in a rope pulley support (26); after the first deflection wheel, it is guided perpendicularly to the reference plane and away from the reference plane to a second deflection wheel (27.2) arranged horizontally; after the second deflection wheel, it is guided horizontally and parallel to the vertical reference plane to a third deflection wheel (27.3) arranged horizontally; after the third deflection wheel, it is guided perpendicularly to the reference plane and toward the reference plane to a fourth deflection wheel (27.4) arranged vertically and perpendicular to the reference plane; after the fourth deflection wheel, it is guided vertically downward to a bearing wheel structure (32) connected to the lifting platform (17); the bearing wheel structure comprises at least one bearing wheel (33); The wheel plane is arranged vertically and transversely to the reference plane, and after the bearing wheel structure (32), it is guided vertically upward to a fifth deflection wheel (27.5) which is arranged in a rope pulley support (26) in a mirror-symmetrical manner to the fourth deflection wheel relative to the reference plane, vertically standing and perpendicular to the reference plane; after the fifth deflection wheel, it is guided perpendicularly to the reference plane and away from the reference plane to a horizontally arranged sixth deflection wheel (27.6); after the sixth deflection wheel, it is guided horizontally and parallel to the vertical reference plane to a horizontally arranged seventh deflection wheel (27.7) which is arranged opposite to the second deflection wheel (27.2) in a mirror-symmetrical manner relative to the reference plane; after the seventh deflection wheel, it is guided perpendicularly to the reference plane and toward the reference plane to an eighth deflection wheel (27.8) which is vertically standing and arranged perpendicular to the reference plane; and after the eighth deflection wheel, it is guided vertically downward to a rope stop device (30) fixed to the lifting platform (17).

10. The method according to claim 8, characterized in that The safety rope (31) is guided vertically upward from a safety rope fixing point (29) on the lifting platform (17) relative to a reference plane extending vertically through the center of gravity (S) of the lifting platform above the lifting platform (17) to a first deflection wheel (28.1) of a rope pulley support (26) which is vertically erected and arranged parallel to the reference plane, after which it is guided horizontally and parallel to the reference plane to a second deflection wheel (28.2) which is vertically erected and arranged parallel to the reference plane, and after which it is guided vertically downward to a second deflection wheel (28.2) which is connected to the lifting platform and has at least one vertically erected and arranged transversely to the reference plane. The invention relates to a load-bearing wheel structure (32) of a load-bearing wheel (33), and is guided vertically upwards to a third deflection wheel (28.3) of a rope pulley support (26) which is mirror-symmetrically opposite to the second deflection wheel with respect to a reference plane, and is vertically erected and arranged parallel to the reference plane after the load-bearing wheel structure (32); and is guided horizontally and parallel to the vertical reference plane to a fourth deflection wheel (28.4) which is vertically erected and arranged parallel to the reference plane and is mirror-symmetrically opposite to the first deflection wheel with respect to the reference plane after the third deflection wheel; and is guided vertically downwards to a rope stop device (30) fixed to the lifting platform (17) after the fourth deflection wheel.

11. The method according to any one of claims 1 to 4, characterized in that The lifting platform (17) is equipped with a lifting device (35), in which a lifting rope (38) is guided upwards in a free space above the lifting platform (17) from a lifting rope holder (39) on the lifting platform (17) to a lifting rope deflection wheel (36.1) of a lifting rope deflection device (36) temporarily fixed in the free space, and from the lifting rope deflection wheel (36.1) downwards to a rope pulling device (37) arranged on the lifting platform (17).

12. The method according to claim 11, characterized in that In order to lift the lifting platform (17) by means of the lifting device (35), a lifting rope deflecting device (36) comprising at least one lifting rope deflecting wheel (36.1) is arranged in the area of ​​the free space on the protection platform (20), and in order to lift the lifting platform (17) by means of a construction crane (40), the lifting rope deflecting device (36) is moved out of the area of ​​the free space.

13. An elevator installation (1) in an elevator shaft (2) of a building which is in the construction phase, in which the utilizable lifting height of the elevator installation can be adapted to the increasing height of the building, wherein: The elevator device (1) comprises: A machine platform (10) is installed in the elevator shaft (2), which can be lifted along the car guide rails (6) and temporarily stopped, wherein an elevator drive machine (11) with a drive wheel (12) is arranged on the machine platform (10). An elevator car (3) and a counterweight (4), which are suspended on a machine platform (10) by means of a sling (15), which is guided at least via a drive wheel (12) of an elevator drive machine (11), so that the elevator car (3) and the counterweight (4) can be moved upward and downward in opposite directions along guide rails (6, 7) in the elevator shaft (2) via the sling (15) by means of the drive wheel (12), A lifting platform (17) is mounted above the machine platform (10) in the elevator shaft (2), which can be lifted and temporarily stopped, wherein the machine platform (10) with the elevator car (3) or the counterweight (4) can be lifted by means of the lifting platform (17) when the available lifting height of the elevator car (3) is intended to be adapted to the current height of the elevator shaft (2), and The lifting platform (17) is designed in such a way that before the lifting platform (10) is lifted, the machine platform can be lifted to a higher level by means of a construction crane or other lifting device, and is characterized in that: The hoisting platform (17) is equipped with a rope fall arrester (25.1; 25.2), which comprises a safety rope (31), which is arranged between the hoisting platform (17) and a rope pulley support (26) fixed above the hoisting platform in the elevator shaft (2) according to the principle of a pulley block with at least two load-bearing rope sections (31.1-31.4), wherein the first load-bearing rope section (31.1) of the safety rope (31) is fixed to the hoisting platform (17) or fixed above the hoisting platform in a fixed position, and the last load-bearing rope section (31.4) is guided through a rope stop (30) fixed to the hoisting platform (17), by means of which the last load-bearing rope section (31.4) is locked after the speed of the last load-bearing rope section (31.4) relative to the rope stop (30) exceeds a predetermined limit, thereby preventing the hoisting platform from descending further.

14. The elevator device according to claim 13, characterized in that The elevator installation (1) is designed in such a way that it is suitable for carrying out the method according to any one of claims 1 to 12.

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