Elevator apparatus

Abstract

A kind of for the hoist equipment (1) of building (10) in construction, the building has the hoist shaft (2) that becomes higher with the increase of building height in the process of the construction phase of building, hoist equipment includes: white travel is guided on at least one rail section (3) construction phase hoist car (4), for carrying personnel or goods in the duration of the construction phase of building;Assembly platform (6) is arranged above construction phase hoist car (4), at least one rail section (3) can be extended upwards from the assembly platform in the rail assembly phase;Upper protection platform (5), the upper protection platform is temporarily fixed or can be fixed in hoist shaft (2), and assembly platform (6) can be suspended on the upper protection platform or in the rail assembly phase by the lifting device (8) based on rope;Lower protection platform (7), wherein assembly platform (6) can be moved in the vertical direction between upper protection platform (5) and lower protection platform (7) by lifting device (8) in the rail assembly phase;And docking device (9) is used to temporarily hang construction phase hoist car (4) on lower protection platform (7), to fix construction phase hoist car (4) to evacuate, wherein construction phase hoist car (4) can be connected with lifting device (8) by docking device (9).

Description

TECHNICAL FIELD

[0001] The invention relates to an elevator installation with an elevator shaft that becomes higher during the construction phase of a building as the height of the building increases. The elevator installation is particularly suitable for use at the construction site of a high-rise residential building. BACKGROUND

[0002] During the construction of a building, the lower floors that are built first are completed so that they can be inhabited or used for other purposes. To this end, the elevator installation comprises a construction phase elevator car that can be used during the construction phase of the building to access the floors that are already used as residential or commercial premises. A construction phase elevator with such a construction phase elevator car can be said to grow with the building, i.e. the available hoisting height of the construction elevator increases as the height of the building or the elevator shaft increases. This enables construction workers and building materials or users of the apartments or business premises that can already be inhabited before the building is completed to be transported with the construction phase elevator car during the construction of the building.

[0003] In order to be able to increase the available hoisting height of the construction phase elevator in a simple manner, construction phase elevator cars that are designed as self-propelled elevator cars are increasingly being used. Such self-propelled elevator cars are known, for example, from WO 2019 / 238530 A1 for use in an elevator installation of a building under construction, which has an elevator shaft that becomes higher during the construction phase of the building as the height of the building increases. SUMMARY

[0004] It is an object of the invention to overcome the known disadvantages and in particular to propose an elevator installation of the type mentioned at the outset that can be operated safely. Furthermore, the elevator installation should be able to adapt to the increasing height of the building in a simple and effective manner.

[0005] According to the invention, these and other objects are achieved by an elevator installation having the features of claim 1. The elevator installation comprises a self-propelled, guided construction phase elevator car on at least one rail segment for transporting persons or goods during the construction phase of a building. The elevator installation further comprises an assembly platform arranged above the construction phase elevator car, from which the at least one rail segment can be lengthened upwards in a rail assembly phase. Furthermore, the elevator installation comprises an upper protection platform on one side, preferably designed as a load-bearing structure, and a lower protection platform on the other side, the upper protection platform being temporarily fixed or fixable in the elevator shaft, and the assembly platform being suspendable in the elevator shaft by a preferably rope-based lifting device or in the rail assembly phase, wherein the assembly platform can be moved in the vertical direction between the upper protection platform and the lower protection platform by means of the lifting device in the rail assembly phase.

[0006] An upper protection platform is understood to mean a protection platform which is at least temporarily located above the assembly platform in or above the elevator shaft. A lower protection platform is understood to mean a protection platform which is at least temporarily located below the assembly platform in the elevator shaft.

[0007] In the first embodiment, the elevator installation can comprise a docking device assigned to the hoisting device for temporarily suspending the construction phase elevator car on the lower protection platform for evacuation, the construction phase elevator car being connectable to the hoisting device via the docking device. Once the construction phase elevator car is connected to the hoisting device via the docking device, evacuation travel can be carried out by the hoisting device. In the following, an evacuation phase is understood to mean a phase in which evacuation travel must be carried out in the construction phase elevator car, for example after the fall arrest device has been triggered.

[0008] Thanks to the self-traveling construction phase elevator car, it is advantageously achieved that construction personnel and building materials can be transported almost throughout the construction of the building with the construction phase elevator car. On the other hand, users of apartments or commercial spaces which have already been occupied before the building is completed can be transported between the floors assigned to these spaces according to regulations without having to interrupt operation for several days while the lifting height of the construction phase elevator car is adjusted.

[0009] In contrast to a so-called climbing elevator of conventional design, in which, in particular, a very heavy machine platform must be lifted in order to increase with the building height, a comparatively light platform can be used in the present elevator installation, which is easy to handle and can be easily lifted, in particular, can be effectively increased with the building.

[0010] In the present document, the term "elevator shaft" is understood to mean a space which is currently in the building under construction, the height of which increases in accordance with the construction progress, wherein the space is dimensioned and designed in such a way that it contains at least one elevator car of an elevator, usually the elevator car and the counterweight of one elevator each can be moved up and down along a vertical travel track. Such an elevator shaft can be a single shaft enclosed by shaft walls. However, the elevator shaft can also be a part of a contiguous space in which tracks of at least two elevators arranged parallel to each other are arranged, wherein between the tracks of adjacent elevators there are no shaft walls, but usually there are steel carriers for securing elevator components.

[0011] In a preferred embodiment, the lifting device can have at least one connecting hook or a further connecting element. If the lifting device is a rope-based lifting device, the connecting element serves, for example, for connecting the rope with the load. Alternatively, the rope can also be fixed by means of the connecting element to an anchor for a fixed point for a specified position. The counterpart of the connecting element can be a loop or an eyelet assigned to the load. The connecting device can of course also be designed in the reverse manner, i.e. the loop or eyelet is assigned to the rope and the connecting hook is assigned to the load.

[0012] The lifting device can be connected to the assembly platform by means of the connecting element for the track assembly phase, to the lower protection platform for the lifting process of the height increase phase or to a stationary fixed point, preferably arranged in the upper protection platform, for the evacuation phase. The connecting element is preferably arranged on the free end of the rope of the lifting device. For example, a connecting hook equipped with a safety lock can be used as a connecting element. Due to the safety lock, an unintentional loosening of the connection to the respective counterpart of the assembly platform, the lower protection platform or the fixed point can be excluded. Instead of such a safety load hook, a common single hook is also conceivable. One advantage of this embodiment is that the lift installation can be set up quickly and easily for the respective required operating phase. As mentioned above, alternative solutions of the rope-based lifting device are also conceivable. Thus, instead of a rope, the lifting device can also have a belt or a chain for lifting and lowering the assembly platform, for lifting the lower protection platform or for lifting and lowering the construction phase lift car.

[0013] Preferably, the lifting device can have a drive for operating the lifting device, which is preferably fixed on the lower protection platform. By means of the drive, the rope of the rope-based lifting device or the belt or chain of the lifting device can be moved.

[0014] It is particularly preferred that the drive can be designed as a rope traction device and in particular as a rope winch. The rope of the lifting device can be moved reliably and at a sufficiently high speed by means of the rope traction device. Furthermore, rope winches are distinguished, inter alia, by a low dead weight and a low acquisition cost. For example, so-called "Tirak" can be used as a rope winch. Instead of a rope winch, it is also conceivable to use a rope traction device with a belt clamp, for example of the "Habegger" type.

[0015] The lift shaft can have shaft openings, wherein at least one shaft opening can be provided for each floor. Shaft doors can be constructed or, if necessary, already constructed into the shaft openings of the lift shaft, through which shaft doors the construction phase lift car and later the final lift car can be accessed from the floor.

[0016] The drive of the hoisting device can be arranged at or on the edge of the lower protection platform. The edge arrangement of the drive of the hoisting device can preferably take place in the area of the front side of the lower protection platform. This front side is the side facing the shaft opening of the elevator shaft. In particular, if the drive is arranged in the area of the edge of the front side of the lower protection platform, there are advantages in terms of handling. The drive can be easily reached from the floor through the respective shaft opening, if necessary without the assembly personnel having to step onto the lower protection platform in order to be able to operate it.

[0017] The lower protection platform can have at least one diverting pulley for diverting the rope of the hoisting device out of or to the drive. The lower protection platform can have one or more diverting pulleys, which are preferably arranged on the underside of the lower protection platform.

[0018] At least one diverting pulley for the rope of the hoisting device can be provided on the upper protection platform. The at least one diverting pulley is preferably arranged on the underside of the upper protection platform. By means of the at least one diverting pulley, the rope from the lower protection platform is diverted, depending on which of the above-mentioned operating phases (height growth phase, track assembly phase, evacuation phase) is to be carried out, back to the lower protection platform for the lifting process during the height growth phase, to the assembly platform for the track assembly phase or to a fixed point, which is preferably arranged on the upper protection platform, for the evacuation phase.

[0019] It is particularly preferred that two diverting pulleys for the rope of the hoisting device are arranged on the upper protection platform. One of the two diverting pulleys can be arranged at the edge of the upper protection platform, so that the rope from the lower protection platform can extend in vertical direction along the shaft wall to the upper protection platform. The other of the two diverting pulleys can preferably be arranged approximately centrally on the upper protection platform, so that the rope can extend in vertical direction from the upper protection platform to the preferably centrally suspended assembly platform during the track assembly phase. However, the central positioning does not necessarily have to be understood geometrically. Central means a position in the area between the edge area and the central area.

[0020] The hoisting device of the elevator installation can have a rope arrangement which can be designed as follows: The rope can extend from the drive downward to a first diverting pulley assigned to the lower protection platform, then horizontally to a second diverting pulley assigned to the lower protection platform, then vertically upward to a third diverting pulley of the upper protection platform, then horizontally to a fourth diverting pulley of the upper protection platform, and preferably finally to a connecting hook or other connecting element for connecting the rope to the assembly platform, to the lower protection platform or to a fixed point, which is preferably arranged in the upper protection platform, wherein the connecting hook can form the rope end. Thereby, the connecting hook can be mounted at the rope end of the rope which faces away from the drive.

[0021] Depending on the operating phase, the ropes coming from the drive can be guided vertically downwards from the fourth diverting pulley either to the assembly platform (in the track assembly phase) or vertically downwards back to the lower protection platform (in the height growth phase). In addition to the vertical downwards guidance of the ropes, the ropes can also be guided further sideways from the fourth diverting pulley to a fixing point on the upper protection platform (for example in the evacuation phase).

[0022] It is advantageous for the safe evacuation that the docking device comprises a free pulley block with a hook or other means for establishing a connection with the construction phase lift car. The pulley block can be permanently suspended on the ropes of the lifting device in the rope section between the first and second diverting pulleys below the lower protection platform or at least temporarily suspended or suspendable on the ropes in this rope section for evacuation. The connection means can be, for example, a hook equipped with a safety lock. In particular, in this way it can be ensured that the personnel is quickly evacuated from the construction phase lift car.

[0023] On the underside of the lower protection platform 7 a safety net can be installed, which prevents hazardous objects from falling into the shaft. BRIEF DESCRIPTION OF DRAWINGS

[0024] Further advantages and individual features can be derived from the following description of embodiments and the drawings. Among others:

[0025] Figure 1 schematic diagram of a lift installation according to the application during the track assembly phase is shown;

[0026] Figure 2 a lift installation in the lifting process during the height growth phase is shown;

[0027] Figure 3 a lift installation during the evacuation phase is shown;

[0028] Figure 4 a simplified perspective view of a lower protection platform and a lifting device for a lift installation according to the application is shown;

[0029] Figure 5 a perspective view of a lift shaft of a rough structure is shown;

[0030] Figure 6 a lower protection platform temporarily fixed in a lift shaft of a rough structure is shown, which has a lifting device for a lift installation according to the application; Figure 5

[0031] Figure 7 a side view of one end of a crossbeam of a lower protection platform is shown, wherein, according to an alternative embodiment of the version shown, Figure 7

[0032] ​​Figure 8 a perspective view of a crossbeam according to Figure 7 a perspective view of a crossbeam according to DETAILED DESCRIPTION

[0033] Figures 1 to 3 A hoisting installation 1 for a building under construction 2 is shown schematically. The building 2 comprises a hoist shaft 2 which becomes higher during the course of the construction phase as the building height increases. In the hoist shaft 2, a construction phase hoist car 4 is installed. The construction phase hoist car 4 of self-propelled design is guided on at least one guide segment 3 during vertical movement. Above the construction phase hoist car 4, the hoisting installation 1 has a device for equipping the hoist shaft 2 which increases in height upwards, in particular by means of a guide for the guide segment 3. This device comprises an upper protection platform 5, a lower protection platform 7 and an assembly platform 6 arranged between the two protection platforms 5, 7. The assembly platform 6 is a platform from which the guide segment 3 is extended upwards. The assembly platform 6 serves as a work platform for assembly personnel. In addition to the guide, the assembly platform 6 can also serve as a transport means for other hoist components to be assembled. The platforms 5, 6, 7 are connected to one another by means of a rope 11 to form an advantageous effective connection. The rope 11 is a component of a lifting device 8 which will be explained in more detail below.

[0034] For the sake of simplicity, only one guide segment 3 is shown in Figures 1 to 3 For guiding the hoist car, preferably two opposite guide segments are used. In the present embodiment, the guide segment designated 3 serves as a linear guide for the construction phase hoist car 4 and subsequently, after the construction phase hoist car has been dismantled, as a linear guide for the (not shown) final hoist car of the hoist of the finished building 2. In addition to the (final) hoist car, the last-mentioned hoist usually also comprises a counterweight. For optimum linear guidance of the hoist car and the counterweight, a plurality of guide segments is required, wherein each guide segment consists of guide profile parts arranged side by side.

[0035] Further building parts outside the hoist shaft 2 are not shown in the figures, without the floors designated 15 and shown schematically. The hoist shaft 2 is distinguished by vertical extension, which in the case of certain hoist shafts can cover almost the entire height of the building. Here, the building 10 can comprise one or more hoist shafts 2 of this type. The hoist shaft 2 can be designed for a hoist with a hoist car and a counterweight. However, the hoist shaft 2 can also be designed for a plurality of hoists.

[0036] From the vertical direction, the elevator shaft 2 is divided into two sections to some extent. The section assigned to the upper floors 15', 15", 15"' can be regarded as a first section of the elevator shaft 2, in which the upper protection platform 5, the assembly platform 6 and the lower protection platform 7 are arranged. In the second section of the elevator shaft 2 assigned to the lower floors 15, the elevator shaft 2 has already been installed with the guide rails required for the linear guidance of the elevator car and with the counterweight for the elevator of the finished building. In this section, the elevator installation 1 for the building under construction 2 has a self-propelled construction phase elevator car 4 instead of the above-mentioned conventional elevator car. The construction phase elevator car 4 is already capable of transporting persons and goods to and from the lower floors during the construction phase of the building. The shaft doors 29 can already be installed in the shaft openings 19 of the elevator shaft 2 of the lower floors 15. These lower floors correspond to the floors 15 of the above-mentioned second section of the elevator shaft 2. The lower floors are those floors which are still in the rough structure below the upper floors 15', 15", 15"'.

[0037] Construction personnel and construction materials can be transported by means of the self-propelled construction phase elevator car 4. However, users of the apartments or business premises which have already been occupied before the building is finished can also be transported between the floors assigned to these spaces, at least as stipulated. In order to be able to carry out the above-mentioned elevator operation both for construction personnel and for floor users, the construction phase elevator car 4 is equipped with a car door system controlled by the elevator controller, which cooperates with the shaft doors 29 which are installed in the elevator shaft 2 along the additional travel area before the available lifting height of the construction phase elevator car 4 is adjusted, respectively.

[0038] The self-propelled construction phase elevator car 4 for transporting persons or goods during the construction phase of the building 10 can comprise, for example, a plurality of driven friction wheels 26 which exert friction on the guide rail segments 3 for climbing. The construction of such a self-propelled elevator car with friction wheel drive and the way it works are described in detail in WO 2019 / 238530 A1. Such a self-propelled construction phase elevator car 3 can be moved up and down relatively quickly, whereby it is particularly suitable for super high-rise buildings with an elevator shaft height of more than 100 m. As an alternative to the friction wheel drive, other drive solutions for the vertical movement of the construction phase elevator car 4 can also be used. Linear drives or gear rack-based drive systems are also possible, which are also mentioned in the above-mentioned document.

[0039] The self-propelled construction phase elevator car 4 can have a fall arrest brake (not shown) or other fall arrest device, by means of which a fall of the construction phase elevator car 4 is prevented. The fall arrest brake is arranged on the construction phase elevator car and acts on the guide rails of the construction phase elevator car to bring the construction phase elevator car to a standstill. The fall arrest brake is actuated by a speed monitor, for example a so-called speed limiter. However, the fall arrest brake can also be triggered by another control unit of the elevator installation. The fall arrest brake can be triggered as a result of an impermissible speed, an unexpected movement of the elevator car, the exceeding of a limit switch, an impermissible acceleration, an impermissible open state of a shaft door or an impermissible open state of a car door. After the fall arrest brake has been triggered, the construction phase elevator car comes to a standstill, in which case the fall arrest brake can be firmly caught on the guide rails, so that the fall arrest brake can be released from the guide rails by lifting the construction phase elevator car and then the fall arrest brake can more easily be transferred to its rest position. Finally, an evacuation run can be carried out. The evacuation run comprises the construction phase elevator car 4 moving at a reduced speed to an evacuation floor, which is usually the upper or lower floor. The lifting of the construction phase elevator car 4 to release the fall arrest brake and the evacuation run can be carried out by means of the rope-based lifting device 8. The evacuation run and the release of any previous fall arrest brake by lifting the construction phase elevator car are components of the previously mentioned evacuation phase.

[0040] The assembly platform 6 is arranged above the construction phase elevator car 4, from which at least one guide rail segment 3 can be lengthened upwards in a track assembly phase. This track assembly phase is shown in Figure 1 In addition to the track assembly, further work on the assembly of the shaft equipment or further work steps can be carried out from the assembly platform 6. In the phase, which is briefly referred to as track assembly phase, the assembly platform 6 can be moved in the vertical direction to the desired position by means of the rope-based lifting device 8, wherein the travel path is bounded by the upper protection platform 5 and the lower protection platform 7. The assembly platform 6 is suspended by means of the rope-based lifting device 8 on the upper protection platform 5. The assembly platform 6 is suspended by means of a connecting hook 13 arranged on the rope end of the rope 11. The upper protection platform 5 is fixed in the elevator shaft 2. The lower protection platform 7 is also fixed in the elevator shaft 2 in the track assembly phase. To this end, the lower protection platform 7 has retractable and extendable support devices 34, 35. It can be seen from Figure 1 It can be seen from that the extendable support devices 35 engage in notches 36 in the shaft wall, thereby enabling the lower protection platform 7 to be positioned in a positionally fixed manner. On the opposite side in the region of the shaft opening 19', the extendable support devices 34 are located on the floor floor of the floor 15' and are fixedly mounted there, preferably by means of screws, for example.

[0041] The lower protection platform 7 has a drive 12 for moving the rope 11 and thus for vertically moving the assembly platform 6. Starting from the drive 12, which is designed as a rope traction device, the rope 11 is guided upwards through diverting pulleys 21, 22 of the lower protection platform 7 to diverting pulleys 23, 24 of the upper protection platform 5. From the upper protection platform 5, the rope 11 is guided over the pulleys 23, 24 of the upper protection platform 5 back down to the assembly platform 6, to which the rope 11 of the lifting device 8 is connected. The drive 12 can be assigned a rope storage 18, for example in the form of a reel, onto which the rope 11 can be wound and unwound again. The rope storage 18 can be integrated in the drive 12 or be a component of the lifting device 8 separate from the drive 12.

[0042] The protection platform designated 5 is temporarily fixed in the uppermost region of the currently existing elevator shaft 2. The upper protection platform 5 is designed as a load-bearing structure. The load-bearing structure serves, inter alia, to carry the lifting device 8 with which the assembly platform 6 can be moved up and down during the track assembly phase. However, the upper protection platform 5 also has the task of protecting personnel and equipment in the elevator shaft 2, in particular in the assembly platform 6, from objects that can fall as a result of the construction work being carried out on the building 2. The lower protection platform 7 serves, inter alia, to protect personnel and equipment in the elevator shaft 2, in particular the construction phase elevator car 4, from objects that fall from the assembly platform 6. Structural details of possible configurations for the lower protection platform 7 are shown and explained below. Figure 6

[0043] The track assembly phase can be followed by a height growth phase. After the end of the track assembly phase and after the elevator shaft 2 has become sufficiently high as the building 2 progresses, the upper protection platform 5 must be positioned on the next higher level. The upper protection platform 5 is lifted to the next higher level, for example with a construction crane, so that, as the building height increases, the height can be increased together with the elevator shaft 2 that becomes higher. However, in some cases, the upper protection platform 5 can also be brought to the next higher level by other means without the use of a crane. After reaching the next higher level, the upper protection platform 5 is again temporarily fixed inside the elevator shaft 2. Thereafter, the lower protection platform 7 can be raised to the next higher level. For this purpose, the rope 11 of the lifting device 8 is connected with the lower protection platform 7. For this connection, the lower protection platform 7 has a connection point, for example in the form of an eye, into which a hook 13 engages. Since the drive 12 for moving the rope during the lifting process is arranged on the lower protection platform 7, the latter can now be pulled up. This process is shown in Figure 2 ​As shown in the diagram, once the lower protective platform 7 reaches the next higher level, it is temporarily secured again in the elevator shaft 2. The height increase phase is now complete, and the next guide rail assembly phase can begin. During the construction phase, the available lifting height of the elevator car 4 gradually adapts to the existing elevator shaft height.

[0044] Assembly platform 6 can be dismantled and removed from elevator shaft 2 during the evacuation phase and / or height increase phase, and then reassembled in the elevator shaft. However, as Figure 2 and Figure 3 As shown by the dashed line, the assembly platform 6 can also be retained in the elevator shaft 2. For this purpose, the assembly platform 6 is moved upwards to the upper protective platform 5 by the lifting device 8 and then secured to the upper protective platform 5. The corresponding device for suspending the assembly platform 6 is also shown by the dashed line and labeled 44. In the present case, the device for suspending the assembly platform includes, for example, a chain. Thus, the assembly platform 6 is safely parked during evacuation and height increase phases. The mounting platform 6 has an opening 45 through which hooks 13 and cables 11 can pass.

[0045] A possible scenario is that the construction elevator car 4 becomes stuck during the construction phase, and personnel must be evacuated from it for this or other reasons. In such cases, from a safety perspective, in addition to prioritizing existing safety devices, it is also meaningful to protect the construction elevator car 4 from falling. To perform the evacuation of the construction elevator car 4, the elevator equipment 1 has a docking device 9 associated with the lifting device 8 for temporarily suspending the construction elevator car 4 on the lower protective platform 7. The evacuation can be carried out as follows: rope 11 is connected to a fixed point 14. For example... Figure 3 As shown, the anchor point 14 can be arranged on the upper protective platform 5. For example, the anchor point 14 may include an eyelet into which a hook is received. The rope 11 can then be moved downwards to the construction phase elevator car 4 via the drive 12. The docking device 9 is located at the apex of the downwardly suspended rope loop of the rope 11 and can therefore be brought into the construction phase elevator car 4. The construction phase elevator car 4 is then connected to the lifting device 8 via the docking device 9. The construction phase elevator car 4 is now additionally secured by the lifting device 8. If it is necessary to release the fall arrestor brake, the construction phase elevator car 4 can now be lifted via the rope-based lifting device 8. The rope-based lifting device 8 can be used to perform evacuation travel to the evacuation floor. Once the construction phase elevator car 4 reaches the evacuation floor, the evacuation phase is essentially complete.

[0046] As from Figures 1 to 3It can be seen that the docking device 9 can be composed of a free pulley block 20 with a connecting hook 25. The pulley block 20 is suspended in a rope section between a first diverting pulley 21 and a second diverting pulley 22 below the lower protection platform 7. It can be seen that the pulley block 20 is permanently suspended in the rope 11. It is also conceivable that the pulley block 20 is only suspended in this rope section of the rope 11 when required. According to Figure 3 , the pulley block 20 can also be only temporarily suspended in the rope 11 for evacuation (see Figure 4 ). The counterpiece on the car side for connecting the hook 25 can be a hole eye provided on the construction phase hoist car 4.

[0047] Figure 4 The rope distribution of the lower protection platform 7 and the lifting device 8 during the height growth phase is shown. The lower protection platform 7 is provided on its underside with two pulleys 21, 22. In addition, Figure 2 two diverting pulleys 23, 24 are shown in the middle. These diverting pulleys 23, 24 are those associated with the upper protection platform 5 (not shown here) (see Figures 1 to 3 ). The drive 12 is arranged on the upper side of the lower protection platform 7 opposite the underside. It can be seen that the drive 12 is arranged on the lower protection device platform 7 at the edge, preferably in the area of the front side facing the shaft opening (15) (not shown here; see Figures 1 to 3 ).

[0048] The rope 11 of the lifting device 8 extends from the drive 12 downward to the first diverting pulley 21 assigned to the lower protection platform 7, then horizontally to the second diverting pulley 22 assigned to the lower protection platform 7, then vertically upward to the third diverting pulley 23 of the upper protection platform 5, then horizontally to the fourth diverting pulley 24 assigned to the upper protection platform 5, and finally vertically downward to the connecting element 13, which in turn is connected with the lower protection platform 7. The arrow e indicates the downward movement of the pulley block 20 to the construction phase hoist car (not shown here) for evacuation.

[0049] According to Figure 4 , the lower protection platform 7 is connected to the connecting element 13 of the lifting device 8 by a suspension structure. This suspension structure comprises four individual chains 27 mounted on corner points, which are combined to form a connection point 28. Instead of such a suspension structure, the connection point 28 can also be arranged directly on the lower protection platform 7, which is basically designed as a plate. This variant is shown in Figures 1 to 3 . For example, a hole eye 28 is fixed on the top side of the lower protection platform 7 to form the connection point.

[0050] The drive unit 12, designed as a rope traction device, can in particular be a rope winch. This rope winch can include a geared motor or a gearless motor, which offers the advantage of simple operation. For example, a so-called "Tirak" can be used as a rope winch. Another advantage of this type of rope winch is its very simple and stable design, and its low susceptibility to error. Manufacturing and maintenance costs can be minimized in this way.

[0051] Figure 5 A feasible configuration for the elevator shaft 2 is shown. A formwork for pouring concrete can be used to construct the elevator shaft 2. With the aid of this formwork, positioning recesses 36, 37 for securing the platform can be easily created. Figure 5 You can also see the support surface marked 38, which is used to position the protection platform in the shaft opening area.

[0052] Figure 6 This embodiment relates to how the lower protective platform 7 can be temporarily secured within the elevator shaft 2. The lower protective platform 7 has two longitudinal beams 32, which in this embodiment are designed as box profiles. The lower protective platform 7 is fixedly positioned in the elevator shaft at the front by protruding support devices 34. The retraction and extension of the support devices 34, housed in the respective box profiles, are indicated by double arrows. To secure this position in the front area, the support devices 34 can be securely connected to the floor using screws 40. In the area of ​​the recess 36 on the rear side of the shaft wall, for example, wedges can be used to securely anchor the protruding support devices 34 into the recess 36.

[0053] As Figure 6 Alternatively, as shown in the diagram, the lower protective platform 7 can also be positioned in the elevator shaft in a fixed manner via a crossbeam (not shown). Instead of the longitudinal beam 32, the lower protective platform 7 can have a crossbeam extending transversely to the longitudinal beam 32 with movable support devices, wherein these support devices can be inserted... Figure 6 The recess 37 shown is positioned for further fixation. This support device is pivotally fixed to the crossbeam. This arrangement is as follows: Figure 7 and Figure 8 As shown. The crossbeam of the lower protective platform 7 is indicated by 41. The pivotable support device is indicated by 42. The support device 42, fixed to the crossbeam 41 so as to pivot about the pivot axis 43, can pivot to Figure 7 or Figure 8 The horizontal position shown is secured in place by a retaining pin. The intermediate position of the partially pivoted support is indicated by 42'. The support can be preloaded, for example, by a spring, so that the support 42 pivots to the horizontal position under the action of the spring.

[0054] Figure 6Further structural details of the lower protection platform 7 are shown, where the above-mentioned "Tirak" is used as rope winch 12. It can also be seen that the upper side of the lower protection platform 7 can be formed by a plate 39. Side walls can be connected with the horizontal plate 39, which are inclined with respect to the horizontal and are arranged to protrude outwards. This type of side walls can ensure that as little as possible or at most a very narrow gap is left between the lower protection platform and the wall of the elevator shaft, through which a falling object can pass. Instead of a single plate, for example, four horizontal single plates can also be used. These single plates can be moved so as to adapt to different shaft cross sections.

[0055] A window 46 is provided in the plate 39. For example, the pulley block 20 with the connecting hook 25 can be reached through the open window 46. In this way, the connecting hook 25 can be easily connected from above with the eye 30 on the construction phase elevator car 4.

[0056] A safety net 33 is then installed on the lower side of the lower protection platform 7, which should prevent dangerous objects from falling into the shaft.

Claims

1. A lift installation (1) for a building (10) under construction, having a lift shaft (2) which becomes higher as the building height increases during the construction phase of the building, the lift installation (1) comprising: a self-propelled construction phase lift car (4) guided on at least one rail segment (3) for transporting persons or goods during the construction phase of the building, a mounting platform (6) arranged above the construction phase lift car (4), from which the at least one rail segment (3) can be extended upwards in a rail mounting phase, an upper protection platform (5) which is temporarily fixed or fixable in the lift shaft (2) and on which the mounting platform (6) can be suspended by a lifting device (8) or in the rail mounting phase, a lower protection platform (7), wherein the mounting platform (6) can be moved in a vertical direction between the upper protection platform (5) and the lower protection platform (7) by the lifting device (8) in the rail mounting phase, characterized in that the lift installation (1) further comprises a docking device (9) for temporarily suspending the construction phase lift car (4) to the lower protection platform (7) in order to secure the construction phase lift car (4) for evacuation, wherein the construction phase lift car (4) can be connected to the lifting device (8) by means of the docking device (9).

2. The elevator installation according to claim 1, characterized in that The lifting device (8) has at least one connection element (13) and can be selectively connected to the mounting platform (6) in the rail mounting phase, to the lower protection platform (7) during the lifting process, during the height growth phase or to a fixed point (14) which is fixed in position in the evacuation phase via the connection element (13).

3. The elevator installation according to claim 2, characterized in that The connection element (13) is a connection hook.

4. The elevator installation according to any of claims 1 to 3, characterized in that The lifting device (8) has a drive (12) which is fixed to the lower protection platform (7).

5. The elevator installation according to claim 4, characterized in that The drive (12) is designed as a rope traction device.

6. The elevator installation according to claim 5, characterized in that The rope traction device is a rope winch.

7. The elevator installation of claim 4, characterized in that The drive (12) of the lifting device (8) is arranged on the lower protection platform (7) on the edge side.

8. The elevator installation according to any of claims 1 to 3, characterized in that The lower protection platform (7) has at least one first diverting pulley (21), a second diverting pulley (22) for diverting the rope (11) of the lifting device (8) which emerges from the drive (12) or the guide drive.

9. The elevator installation according to any of claims 1 to 3, characterized in that On the upper protection platform (5) there is arranged at least one third diverting pulley (23), a fourth diverting pulley (24) for the rope (11).

10. The elevator installation according to any of claims 1 to 3, characterized in that The lifting device (8) comprises a rope (11) which, starting from the drive (12), extends downwards to the first diverting pulley (21) of the lower protection platform (7), then horizontally to the second diverting pulley (22) of the lower protection platform (7), then vertically upwards to the third diverting pulley (23) of the upper protection platform (5), then horizontally to the fourth diverting pulley (24) of the upper protection platform (5) and finally to the connection element (13).

11. The elevator installation according to any of claims 1 to 3, characterized in that The docking device (9) comprises a free pulley block (20) with a connecting hook (25) or other connecting means for establishing a connection with the construction phase lift car (4), wherein the pulley block (20) is permanently or at least temporarily suspended in the rope section between a first diverting pulley and a second diverting pulley below the lower protection platform (7) on the rope (11) of the hoisting device (8) for evacuation purposes.

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