EP1321417B1 - Elevator shaft and method for erecting the elevator shaft - Google Patents

Abstract

The lift shaft is composed of two side walls (1, 2) acting as guide walls, and a third central wall (3) connected to the other two, forming a prefabricated concrete track element (10) of at least roughly C-shaped cross section. The third wall has a door aperture (13), and the side walls each have an integrated track (11, 12) for the lift cabin.

Description

The present invention relates to an elevator shaft according to the preamble of patent claim 1 and to a method for constructing a hoistway according to the preamble of patent claim 13.

From the utility model DE 201 05 144 U1 a self-supporting cable lift is known in which the leadership of the cabins and the counterweights on the shaft door front is arranged. For this purpose, a statically self-supporting integrated front structure is provided, which extends from the shaft floor to the shaft ceiling and at the same time forms a partition wall between the vestibule and the shaft. The structure is a steel construction. The integrated front structure has at least two shaft door modules arranged vertically between a lower buffer module and an upper drive module. The integrated front structure incorporates two continuous, modular, vertical, hollow pillars, called door pillars, because they define a gap in which the shaft doors are located. These hollow door pillars carry the counterweights inside. On the right and left of the back of the door pillars, a frame with guide rails for guiding the cabin is attached. This frame forms with the door front a U-shaped structure. At the rear of each column, another frame with rails for guiding the cabin is welded at right angles to the door front.

The landing door modules may, if different storey heights exist, comprise a standard hoistway door unit and an order-specific matching unit, which are clamped in a vertical axis by means of pins mounted on the guide rail frame to reach the predetermined height of the hoistway door module. For repairs and maintenance, the built-in components of the drive module are accessible from the vestibule via a flap. In a variant of the drive module, the traction sheaves are each provided with its own drive unit. The hollow pillars of the hoistway door unit may be made of various materials such as steel, aluminum, concrete, plastic and have different shapes.

From the patent CH 525 833 a concrete structure is also known, which serves as an elevator shaft with two guide walls, as well as a front wall and a rear wall. On the side walls ribs are designed with multiple guide surfaces, which serve as a guide for the elevator car. These ribs are homogeneously and continuously connected to the wall parts. Parallel to these ribs, similar guide members are provided to provide extra security to the wire or roped counterweight for safety reasons. The side walls are each provided on two opposite ends, top and bottom, with centerings.

Furthermore, from the DE-A-2054936 an elevator shaft formed from prefabricated walls known.

It is an object of the present invention to provide an improved hoistway of a similar type.

This object is achieved according to the invention by an elevator shaft according to claim 1 and a method according to claim 13 in an advantageous manner.

The invention makes it possible to significantly reduce the expense of a structural type for such systems.

Other advantageous embodiments of the invention will become apparent from the other dependent claims.

Fig. 1 und 2

schematische, perspektivische Darstellungen von zwei Fahrbahnelementen nach einer ersten Ausführung der Erfindung, die aufeinander montiert werden,

Fig. 3

eine perspektivische Darstellung einer zweiten Ausführung eines solchen Fahrbahnelements, das auch Fahrbahn- und Türfrontmodul genannt wird,

Fig. 4

eine schematische Querschnittdarstellung eines derartigen Fahrbahnelements,

Fig. 5A

eine schematische perspektivische Darstellung eines Fahrbahnelements, das auf einer in eine Gebäudebodenplatte eingegossenen Wanne ruht,

Fig. 5B

eine vergrösserte Detailansicht der Fig. 5A,

Fig. 6

eine perspektivische Darstellung eines Fahrbahnelements, bevor es auf eine in der Gebäudebodenplatte eingegossene Wanne nach der Erfindung abgesenkt wird,

Fig. 7

einige Details einer solchen Wanne,

Fig. 8A

eine schematische Seitenansicht eines Ausschnitts eines erfindungsgemässen Topmoduls,

Fig. 8B

eine schematische Seitenansicht des erfindungsgemässen Topmoduls nach Fig. 8A,

Fig. 9

eine schematische Querschnittdarstellung eines derartigen Topmoduls,

Fig. 10

eine Querschnittdarstellung eines Kopplungsstücks für erfindungsgemässe Fahrbahnelemente,

Fig. 11 und 12

eine perspektivische Darstellung von zwei aufeinander platzierbaren Fahrbahnelementen mit je einem Kopplungsstück an deren Enden,

Fig. 13 und 14

Detailansichten der Kopplungselemente vor dem Eingiessen,

Fig. 15

eine perspektivische Darstellung eines weiteren Fahrbahnelements, das Mittel zum Stützen einer Schalung aufweist, und

Fig. 16

eine schematische Schnittdarstellung eines weiteren Fahrbahnelements, das Mittel zum Stützen einer Schalung aufweist.

The invention will be explained in more detail below, for example, with reference to drawings. Show it:

Fig. 1 and 2

schematic, perspective representations of two roadway elements according to a first embodiment of the invention, which are mounted on each other,

Fig. 3

a perspective view of a second embodiment of such a roadway element, which is also called roadway and door front module,

Fig. 4

a schematic cross-sectional view of such a roadway element,

Fig. 5A

a schematic perspective view of a roadway element, which rests on a cast in a building floor plate pan,

Fig. 5B

an enlarged detail view of FIG. 5A,

Fig. 6

a perspective view of a roadway element, before it is lowered onto a tray cast in the building floor panel according to the invention,

Fig. 7

some details of such a tub,

Fig. 8A

1 is a schematic side view of a section of a top module according to the invention,

Fig. 8B

1 is a schematic side view of the top module according to the invention according to FIG. 8A,

Fig. 9

a schematic cross-sectional view of such a top module,

Fig. 10

a cross-sectional view of a coupling piece for inventive roadway elements,

FIGS. 11 and 12

a perspective view of two successive placeable roadway elements, each with a coupling piece at the ends,

FIGS. 13 and 14

Detailed views of the coupling elements before pouring,

Fig. 15

a perspective view of another roadway element having means for supporting a formwork, and

Fig. 16

a schematic sectional view of another roadway element having means for supporting a formwork.

The modular roadway elements 10 and 20 according to FIGS. 1 and 2 basically have three walls 1, 2, 3 and an at least approximately C-shaped cross section or ground plan. These C-shaped track members 10 and 20 are preferably constructed to form prefabricated lane and door front modules, and each include two integral car guides or lanes 11, 12 (FIG. 1) and 21, 22 (FIG. 2). In the embodiment of Fig. 1, the corners or corner edges 14, 15 are formed at right angles, but they can also be rounded or have other architecturally and technically useful forms. They also do not necessarily have to be symmetrical, as shown in FIGS. 1 and 2.

The surfaces 16, 17 of the inner sides of the C-shaped track member may be parallel or, as shown in Fig. 1, on the shaft inside an inner corner angle α form, for example, greater than 90 degrees, the walls 1, 2 with increasing distance from the wall 3 can become thinner. Preferably, the modular lane members 10 and 20 are prefabricated concrete modules (eg, cast concrete), where the lane members 10 and 20 may be provided with channels 18 or other recesses for integrated wiring. The roadways 11, 12 (FIG. 1) and 21, 22 (FIG. 2) can be provided with a continuous cavity 19, for example for a cable for mutually clamping a plurality of mutually stationary roadway elements 10, 20. Due to the mutual bracing, the stability of an elevator shaft consisting of a plurality of modular roadway elements 10, 20 can be improved.

Concrete integrated guides 33, 34 and 35, 36 for balancing weights and guides integrated into the concrete 37, 38 for shaft doors. Preferably, these guides are formed directly in the concrete, or cast as metal guides in the concrete, for example.

Fig. 4 shows a top view of the hoistway, which may be peripherally terminated by another C-shaped structure or module 39 where an elevator car 40 is housed with doors 41, 42, 43, 44 forming a door system with sliding door leaves. Preferably, the module 39 is designed statically non-supporting. On the elevator car 40, a support 45 with rollers 93, 94, 95, 96 for guiding the elevator car is fixed at the top and bottom. In Fig. 3, four optionally preassembled shaft doors 46, 47, 48, 49 are shown, which can be mounted in the guides 37, 38. For lateral gain of space, the balance weight guides 33 to 36, as shown in Figures 3 and 4, laterally, ie left and / or right to the at least approximately parallel or preferably an inner corner angle α> 90 ° forming sides 16, 17 (Fig. 1) of the C-shaped track element 30 and be arranged within the shaft wall projection.

In a further embodiment, the module 39 may have a supporting function in the building, but without bearing the hoistway and its elements.

Shown in FIGS. 5A and 5B is a roadway element 70 resting on a prefabricated well pit 60.

This pit pit 60 is poured into the building floor panel of the building and is therefore later practically invisible from outside the elevator shaft. The tray 60 serves as a formwork during the casting of the building floor panel. A possible embodiment of a well pit 60 is shown in FIGS. 5A, 5B and 7 and represents a base module introduced by a builder as a pit. Preferably, the tub 60 has a bottom 64. For the purposes of the invention, the term well may also be used to subsume a trough with a bottom having an opening or even a bottomless frame. The building floor slab is produced on a ground floor (e.g., the excavation floor), whereby the tub 60 can be poured. Then a first prefabricated delivered to the site, for example, C-shaped roadway element 70 can be introduced, after which further roadway elements 20 (Fig. 2) are stacked and, with the building growing, mounted. This work can be carried out at least in part by a master builder. The stacked and supported on the building floor panel roadway elements form an elevator support structure, which can carry a top module (see, for example, Figures 8A and 8B) and stairwell pedestals. The roadway elements are preferably dimensioned from the statics forth so that they are able to absorb the vertical forces in the elevator shaft. In particular, these vertical rams are the own weight of the elevator shaft and the forces that occur during operation of the elevator.

In the following, an installation example for the installation of a pit pit 60 is given. In a pit, a provided with a thin, horizontal mortar bed, taking into account the exact altitude. The pit tray 60 is inserted and pushed on this mortar bed in the correct position. Then, the pit pit 60 can be filled with water so that it does not shift when pouring the building floor plate. Concrete is then poured into the excavation around the well pit to create the building floor slab. After curing of the building floor plate, the first roadway element 70 is placed, as indicated schematically in Figures 6 and 7 by arrows. At the bearing point of the first roadway element 70 on the pit tray 60, a thin layer of mortar can be applied. The roadway element 70 is positioned by means of a centering & positioning pin 71. The exact location in the horizontal plane is adjusted by rotation about a vertical axis 72. With the screws 62, the roadway element is lowered into the mortar layer. By turning the adjusting screws 62 in or out, the position of the roadway element can be adjusted. It should be noted that the mortar layer at least partially carries the weight of all roadway elements. The next following track element is preferably aligned after casting the first concrete deck (1st floor slab) with two centering & positioning bolts with respect to the underlying track element.

The tray 60 has, as discussed, at least one integrated centering & positioning pin 71. In addition, the tray has screw holes 73 into which fixing screws 74 can be screwed to secure the track member 70 to the tray 60. Preferably, the tub 60 an all-round Abdichtflansch 63 to seal from groundwater. The trough 60 may also be provided with tabs 75 which anchor the trough in the building floor panel. However, it does not have to be supportive of the elevator structure; the forces are preferably passed directly through the mortar layer in the building floor plate.

Trained as a tray 60 base module has a low weight and a small volume for transport and installation and brings a drastic reduction in construction time and construction costs, in particular, no special hoist for larger loads is required. In addition, such a basic module simultaneously fulfills building and elevator functions. In conventional elevator systems, the shaft pit had to be cast in concrete at the location of the lift shaft to be built by step by step, the corresponding shuttering made of wood were constructed. This process was very labor intensive and expensive. These steps are eliminated when using a trough 60 according to the invention. The trough 60 preferably consists of a CF composite. For example, the tub 60 has a weight of less than 100kg.

The uppermost element of the elevator shaft, which is also called top module 80, has at least one drive 81 and a plurality of rollers according to FIGS. 8A and 8B, for example the rollers 91, 92, 97, 98 for the cabin-side runners 82 and / or for the rollers counterweight strand 83 of the support and drive cables. The top module 80, to which the elevator car 40 and at least one counterweight (not shown here) hang indirectly (see FIG. 8B), may be a kind of cover 86 which extends from a flat roof 89 (building ceiling). is introduced ago. At this top module 80, a drive 81 and pulleys 91, 92, 97, 98 are attached, and it has seals 87 against the building and at least one vent slot 88. As can be seen in FIG. 8B, the top module 80 preferably rests on an upper roadway element 100. The top module 80 is preferably a prefabricated concrete element.

This top module 80 with integrated elevator and construction functions, which is positioned and supported on the uppermost lane and door front module 100, may be factory pre-assembled with suspension and deflection rollers (eg, rollers 91, 92, 97, 98) with a factory pre-assembled one Drive unit 81 and / or be provided with integrated building interfaces or building interfaces for sealing and insulating the top building ceiling 89. The top module 80 can be used as an interior formwork for casting the building ceiling 89.

Such a top module 80 mounted on the shaft head and serving as a ceiling connection is cost-effective in terms of transport and assembly, affords great safety during elevator installation, can be used as packaging for the elevator components, for example the rollers and the drive, and also leads to minor on-site Costs of shaft head construction. In addition, the top module 80 may be configured such that it can be used as a weather protection during an installation phase.

According to FIG. 9, one roller 91 or 92 each is arranged for the two ropes 83 (FIG. 8B) carrying the counterweights 84 and 85, respectively, in such a way that the projection of each hanging one Rope 83 at least approximately through the center of gravity of the corresponding counterweight 84 and 85 runs. There is a support 45 on which four rollers 93, 94, 95, 96 are rotatably arranged, which move in solidarity with the elevator car 40. The four rollers 93, 94, 95, 96 are preferably formed by the trapezoidally shaped cabin guides 11, 12 (FIG. 1), or 21, 22 (FIG. 2), or 31, 33 (FIG. 3) of the respective modular one Track element led.

The preferably C-shaped roadway elements 10 (FIG. 1), 20 (FIG. 2), 70 (FIG. 6) and 100 (FIG. 8B) can also be used to carry stairwell platforms, even if the complementary module 39 (FIG. Fig. 4 or Fig. 9) is omitted, for example, to form a respect to design and carrying forces free rear shaft wall area as a design freedom for architects. The C-shaped roadway elements 10, 20, 70 and 100 can then be "built in" and "outside" on the facade of a building, or built into a facade niche or attachable.

The modular C-shaped roadway elements 10, 20, 70 and 100 according to the invention can be designed for direct reception of functional elements (eg functional elements of the door mechanism). It does not necessarily require special metal frames or metal profiles. The roadway elements 10, 20, 70 and 100 may have so-called gypsum edges to allow easier plastering of the shaft outer walls. Their modular design eliminates the need to compensate for building tolerances. The modular roadway elements 10, 20, 70 and 100 may have special recesses or attachment means have for direct, frameless fastening of the door mechanism.

The modular elevator shaft according to the invention proves to be particularly advantageous in that no additional door frame is required for supporting or supporting doors, or for cleaning and accurate closure or for fire protection requirements. The individual modules or elements have only a low weight and a small volume, which not only brings advantages in transport and installation with it, but even allows the construction of the elevator shaft by the contractor construction company in the absence of elevator experts at the site without doing To require a specific lifting and lifting gear, because construction and elevator functions are met with the same elements or modules, even the display and controls may be pre-assembled.

As can be seen in FIGS. 4 and 9, for example, the rollers 93, 94, 95 and 96 are guided by the trapezoidal roadways 11 and 12 (FIG. 1), for example. The trapezoidal roadways 11 and 12 (FIG. 1) are preferably cast from concrete. Since these lanes serve only to guide the cabin 40, they are unproblematic from a static point of view. It is possible to provide relatively thin walls 16 and 17 (Figure 1), which, however, should not be used for fastening or as supporting structures. Also, one should try in the design of the entire elevator shaft and the individual roadway elements to avoid sound bridges to allow good sound insulation. The horizontal Road loads due to eccentric loading of the elevator car 40 can reach relatively high levels. These horizontal loads are - even with thin walls 16 and 17 (Figure 1) - unproblematic because they are collected on each floor by the floors. The connections between the roadway elements and the floor slabs can be realized either as rigid concrete / concrete joints or in the form of elastic sound insulation.

The counterweight guide, for example in the form of the rails 33 and 35, could also be arranged at least partially on the door front wall 3.

The carrier 45 of the cab 40 (Figure 9) is guided directly over the four upper guide rollers 93 to 95 and, for example, via four further lower rollers of a lower carrier not visible in the figures, for example along the concrete tracks 21, 22 (Figure 2) ,

The trapezoidal design of the roadways 21, 22 results in four elongated guide planes 24, 25 and 26, 27 in Fig. 2, which extend vertically in the elevator shaft. The intermediate levels 28 and 29 are not used to guide the elevator car 40, but may optionally be used for other functions. Due to the selected trapezoidal design of the roadways 21, 22, the guidance of the car 40 is very stable and also usable, for example, to absorb vertical forces. The guide geometry is very accurate, as the bump points and track distance are shaped.

The ends of a roadway 21, 22 (FIGS. 11, 12) of a roadway element are preferably provided with a coupling element 101 according to FIG. 10 cast directly in the concrete. Figures 11 and 12 show coupling pieces 110 and 120 at the ends of two abutting roadway elements. These coupling pieces 110 and 120 comprise a centering pin 121 (FIG. 12) and a centering hole 111 (FIG. 11), whereby they are automatically aligned with one another during assembly of the elevator shaft. The coupling pieces 101 are provided in the example shown with bolted anchors 131, 132 and 133, 134 of FIG. 13 and 14 to keep them anchored in the concrete after pouring. The surfaces 112, 113, 114 and 122, 123, 124 have the same polygonal cross-sectional shape, such as the trapezoidal lanes 11 and 12 of FIG. 1 or 21 and 22 of FIG. 2.

For producing the modular roadway elements 10, 20, 30 with integrated roadways 21, 22, a casting mold is preferably used. Ideally, the coupling pieces 110 and 120 are made of metal and can thus also serve as edge protection.

The optionally also asymmetrically in cross section trapezoidally arranged walls 24, 25 and 26, 27 (Fig. 2) corresponding to the inclined trapezoidal sides 102 and 103 in Fig. 10, for example, close an angle of min. 60 ° and max. 120 °, but preferably an angle of about 80 ° to about 100 °. Correspondingly, for the angle β in FIG. 10, 60 °>β> 30 ° or preferably 50 °>β> 40 °. The treads 11, 12, 21, 22 should have no grooves, heels or other bumps to bumps or

To avoid vibrations that could otherwise be transmitted via the rollers 93, 94, 95, 96 to the car 40.

The coupling pieces 101 (FIG. 10), 110, 120 (FIGS. 11, 12) are inserted into the casting mold prior to the casting of the roadway elements. This results in ideally even transitions from the concrete cast guide treads to the coupling pieces. Since superimposed coupling pieces of adjacent roadway elements are mutually precisely centered, perfectly aligned, heel-free roadways result in the assembled state.

The coupling pieces 101 preferably each have at least one recess 104 and / or a (threaded) bore 105, 106, which serve for the mutual fixation of two mutually-facing roadway elements, for example with connecting straps. In addition, (threaded) holes 107, 108 may be present with which a rotation or displacement of the inserted when casting the roadway elements in the mold coupling pieces is prevented.
The roadway elements 10, 20, 30, 70 and 100 are preferably provided with a continuous cavity 19 and the coupling pieces 101 with openings 109 in order to be able to pass through such cavities 19 and openings 109, for example, at least one cable.

The roadway elements 10, 20, 30, 70 and 100 are preferably provided with roadways 11, 12 and 21, 22 or 31, 32, which have an at least approximately trapezoidal cross section, wherein the coupling pieces 101 may be formed plate-shaped with the same trapezoidal cross-section. The sloping trapezoid sides of the carriageways may also serve as guides for rollers 93, 94, 95, 96 located on a support 45 fixed to the elevator car 40. The rollers 93, 94, 95, 96 may also be otherwise connected to the elevator car 40.

Two further embodiments of the invention are described in connection with FIGS. 15 and 16. FIG. 15 shows a modular roadway element 140, which has a type of circumferential ledge 141 in the lower region. This ledge 141 may, for example, support a formwork 142 for the casting of a floor slab, as illustrated in FIG. Another variant is shown in the sectional view in FIG. 16. The roadway element 150 has a recess 151 which can serve as a means for receiving a formwork 152, as indicated on the left side of the figure. Under certain circumstances, the means 141 and 151 can also carry the floor slab directly.

Accordingly, according to a first embodiment of the invention, the elevator shaft may be formed with prefabricated modular roadway elements (e.g., the roadway elements 10, 20) having an at least approximately C-shaped cross-section.

According to a second embodiment of the invention, a preferably modular elevator shaft may comprise roadways 11, 12 or 21, 22 or 31, 32, which have an at least approximately trapezoidal cross-section, wherein the sloping trapezoidal sides of the roadways as guide for rollers 93, 94, 95, 96, which are located on at least one support 45, which is attached to the elevator car 40.

According to a third embodiment, a modular elevator shaft can be formed with at least two prefabricated modular roadway elements (eg from the roadway elements 10, 20), which include roadways 11, 12, 21, 22 for the elevator car 40, such that at least at the upper end a lower lane of a lane element, a coupling piece 120 (FIG. 12) is fixedly arranged, and that at least at the lower end of an upper lane of a next lane element another coupling piece 110 (FIG. 11) is fixed, wherein both coupling pieces 110, 120 are configured in order to form an aligned transition between these two lanes at least in a region provided for guiding the elevator car 40.

According to a fourth embodiment, the elevator shaft can at least partially rest on a concrete floor slab in which a trough 60 is inserted, which serves as shuttering during the casting of the building floor slab.

According to a fifth embodiment of the invention, the shaft head of a hoistway can be designed as a modular prefabricated top module 80 made of concrete.

In all of these embodiments, examples of elevators have been illustrated in which steel cords running over rollers carry the cab 40 and the counterweight (s). In these embodiments, however, hydraulic drives can readily be used. For example, straps can be used instead of ropes.

The inventive embodiments of such a hoistway prove to be particularly cost-effective in the production in the factory and for transport and installation. They provide increased safety during the lift assembly and possibly allow the use of a top module as a "packaging" of the elevator components, such as units with rollers and drive.

Claims (13)

1. Lift shaft of modular construction comprising at least one prefabricated modular travel path element (10; 20; 30; 70; 100), which is formed by the two side walls (1, 2) and a third wall (3) arranged therebetween so that the travel path element (10; 20; 30; 70; 100) has an at least approximately C-shaped cross-section, and the two side walls (1, 2) each have an integrated travel path (11, 12; 21, 22) for guidance of the lift cage (40), characterised in that the travel path element (10; 20; 30; 70; 100) is of integral construction and that the third wall (3) is provided with a door opening (13; 23).
2. Lift shaft according to claim 1, characterised in that the modular travel path element (10; 20; 30) is prefabricated integrally as a concrete structure and has cage guides (31, 32) integrated in the concrete structure and/or guides (33, 34; 35, 36), which are integrated in the concrete structure, for compensating weights and/or guides (37, 38), which are in the region of the door opening (13; 23) and integrated in the concrete structure, for shaft doors.
3. Lift shaft according to claim 2, characterised in that not only the integrated cage guide (31, 32), but also the guides (33, 34; 35, 36) for the compensating weights are located at inner surfaces (16, 17) of the two side walls (1, 2) of the modular travel path element (10; 20; 30).
4. Lift shaft according to one of claims 2 to 3, characterised in that the inner surfaces (16, 17) of the side walls (1, 2) of the modular travel path element (10; 20; 30) form at least in the region in which the guides (33, 34; 35, 36) for the compensating weights of the lift cage (40) are disposed form an inner corner angle (α) which is greater than 90 degrees and thus reduce the thickness of the side walls (1, 2) with increasing spacing from the third wall (3).
5. Lift shaft according to one of claims 1 to 4, characterised in that the modular travel path element (10; 20; 30) is provided with channels (18), preferably for an integrated cabling, extending parallel to the cage guides.
6. Lift shaft according to one of claims 1 to 5, characterised in that the lift shaft comprises several modular travel path elements (10; 20; 30) layered one on the other, wherein the modular travel path elements (10; 20; 30) are provided with a continuous cavity (19), preferably for a cable for prestressed connection of the modular travel path elements (10; 20; 30).
7. Lift shaft according to one of claims 1 to 6, characterised in that the modular travel path element (10; 20; 30) is provided with travel paths (11, 12; 21, 22) which have an at least approximately trapezium-shaped cross-section and that the travel paths (11, 12; 21, 22) have obliquely disposed trapezium sides (24, 25, 26, 27) which serve as guide for rollers (93, 94, 95, 96) connected with the lift cage (40).
8. Lift shaft according to one of claims 1 to 7, characterised in that the modular travel path element (10; 20; 30; 70; 100) is statically dimensioned in such a manner that it serves as a load-bearing structure in order to accept the vertical forces of the lift shaft, particularly the intrinsic weight of the lift shaft, and forces arising in operation of the lift.
9. Lift shaft according to one of claims 1 to 8, characterised in that the modular travel path element (10; 20; 30; 70; 100) is dimensioned in such a manner that it can support a stairwell landing and/or a top module (80).
10. Lift shaft according to one of claims 1 to 9, characterised in that a module (39) is mounted relative to the middle third wall (3) so as to close the lift shaft, wherein the module (39) is preferably constructed as a non-load-bearing element of the lift shaft.
11. Lift shaft according to one of claims 1 to 10, characterised in that the modular travel path element (10; 20; 30) is equipped at the factory with integrated shaft doors (46, 47, 48, 49).
12. Lift shaft according to one of claims 1 to 11, characterised in that at least one of the modular travel path elements (140; 150) comprises means (141; 151) suitable for supporting formwork for casting of a ceiling.
13. Method of erecting a lift shaft according to one of claims 1 to 11, characterised in that a first prefabricated modular travel path element (10) is introduced onto a building floor plate, which is produced at the site of a building to be erected, the prefabricated modular travel path element (10) is aligned horizontally and vertically and thereafter at least one further modular travel path element (20) is positioned on the first prefabricated modular travel path element (10), wherein the lift shaft is assembled so as to grow with the building.

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