EP1818305B1 - Linear motion drive system for Rucksack type elevator - Google Patents

Abstract

The passenger cabin (24) is equipped with two linear elevations positioned vertically at its rear surface. Each of the elevations has a triangular cross section and is provided with flat magnetic elements (21) joined to the inwards pointing surfaces of the triangles. A column (20) with two inclined front areas is located at the rear wall of the shaft (26). When magnetic forces are activated at the column (20) the lift (24) is moved by the complementary forces (FN) transmitted from the magnetic elements (21). An independent claim is given for the linear drive.

Description

The invention relates to an elevator installation with a linear drive system according to the preamble of claim 1 and a linear drive system for an elevator installation according to the preamble of claim 14.

Various elevator configurations with linear motor drive systems are known. In such elevator configurations, however, a variety of problems occur that could only be partially solved so far. This is partly because some of the problems are diametrically opposed and the isolated solution to one of the problems often causes problems in other areas.

This conflict is explained below using an example. The linear motor drive systems, especially those working with permanent magnets, have very large attractive forces between a primary or stationary part and a secondary or moving part. If one uses such a permanent magnet linear motor now both as a direct drive system and as a suspension means of the elevator car, so an accurate and secure guidance of the elevator car must be ensured. In this regard, the show FIGS. 1A, 1B and 2A, 2B various basic configurations of elevator systems with permanent magnet linear drive systems.

In the Figures 1A and 1B a configuration is shown in which an elevator car 13 by means of a permanent magnet linear drive system 10, 11 is moved along a lift shaft in the y direction. Typically, such a permanent magnet linear drive system comprises a stationary part 10 fixed in the shaft and a movable part 11 fixed to the elevator car 13. From the top view in Fig. 1B It can be seen that in such a configuration no guidance takes place in the yz plane, so that additional guide shoes are to be provided on the elevator car 13, which guide the elevator car 13 along guide rails 12 arranged to the right and left of the elevator car 13. A comparable elevator installation is the patent application EP 0 785 162 A1 refer to.

In the FIGS. 2A and 2B another basic configuration is shown. As in the plan view in Fig. 2B As can be seen, the permanent magnet linear drive system comprises a stationary part 10 and two movable parts 12. This achieves guidance in the yz plane. However, in order to avoid tilting in the xy plane, guide rails are also required, or the elevator car 13 would be supported by further support means, such as a cable 12 'mounted centrally on the elevator car.

From the patent US 5,668,421 An elevator system has become known in which an elevator car can be moved by means of inductive linear motors along tubular guides. Per guide two arranged around the guide linear motors are provided, each motor induces a concave coil head by means of traveling field in the tubular guide currents, whereby a thrust comes about.

From the Scriptures JP 04089787 For example, an elevator has become known with an elevator car which can be moved in an elevator shaft and two counterweights which are connected to the elevator car by means of carrying cables guided by deflection rollers. The elevator car and the counterweights are driven by means of linear motors arranged at the rear shaft corners and cabin corners.

The previously known approaches are therefore technically complex, they require a lot of material and space in the elevator shaft and are therefore costly.

Also, the known solutions are not or only partially suitable for elevator system in backpack configuration, which require only one wall of the elevator shaft for drive, suspension and guidance for structural or aesthetic reasons.

It is therefore the task to propose an elevator installation which requires little space in the elevator shaft when using a linear motor drive system.

It is considered another object to provide a linear motor drive system for a lift system in backpack configuration.

The solution of these objects is carried out for the elevator installation by the characterizing features of claim 1 and for a linear drive system by the characterizing features of claim 14.

Particularly advantageous features can be found in the dependent claims.

Fig. 1A

eine schematische Seitenansicht eines Teils einer ersten Aufzugsanlage mit einem Linearantriebssystem;

Fig. 1B

eine schematische Draufsicht der ersten Aufzugsanlage gemäss Fig. 1A;

Fig. 2A

eine schematische Seitenansicht eines Teils einer zweiten Aufzugsanlage mit einem Linearantriebssystem;

Fig. 2B

eine schematische Draufsicht der zweiten Aufzugsanlage gemäss Fig. 2A;

Fig. 3

eine schematische Seitenansicht eines Teils einer dritten Aufzugsanlage mit einem Linearantriebssystem, wobei es sich um eine Aufzugsanlage in Rucksackkonfiguration handelt;

Fig. 4A

eine schematische Perspektivansicht eines Teils einer ersten erfindungsgemässen Aufzugsanlage mit zwei beweglichen Teilen;

Fig. 4B

eine schematische Draufsicht der ersten erfindungsgemässen Aufzugsanlage gemäss Fig. 4A;

Fig. 5A

eine schematische Draufsicht eines Teils einer zweiten erfindungsgemässen Aufzugsanlage;

Fig. 5B

eine schematische Draufsicht eines Teils einer dritten erfindungsgemässen Aufzugsanlage;

Fig. 6A

ein weiteres Beispiel eines stationären Teils eines erfindungsgemässen Linearantriebssystems in schematischer Schnittdarstellung;

Fig. 6B

ein weiteres Beispiel eines stationären Teils eines erfindungsgemässen Linearantriebssystems in schematischer Schnittdarstellung;

Fig. 7A

eine schematische Draufsicht eines Teils einer vierten erfindungsgemässen Aufzugsanlage mit vier beweglichen Teilen;

Fig. 7B

eine schematische Draufsicht eines Teils einer fünften erfindungsgemässen Aufzugsanlage mit Hilfsführung;

Fig. 8

ein Teilansicht einer sechsten erfindungsgemässen Aufzugsanlage mit Notführung.

In the following the invention will be described in detail by means of exemplary embodiments and with reference to the drawings. Show it:

Fig. 1A

a schematic side view of a portion of a first elevator installation with a linear drive system;

Fig. 1B

a schematic plan view of the first elevator system according to Fig. 1A ;

Fig. 2A

a schematic side view of a portion of a second elevator installation with a linear drive system;

Fig. 2B

a schematic plan view of the second elevator installation according to Fig. 2A ;

Fig. 3

a schematic side view of a portion of a third elevator installation with a Linear drive system, which is an elevator system in backpack configuration;

Fig. 4A

a schematic perspective view of a portion of a first inventive elevator system with two moving parts;

Fig. 4B

a schematic plan view of the first inventive elevator system according to Fig. 4A ;

Fig. 5A

a schematic plan view of part of a second elevator system according to the invention;

Fig. 5B

a schematic plan view of part of a third elevator system according to the invention;

Fig. 6A

a further example of a stationary part of an inventive linear drive system in a schematic sectional view;

Fig. 6B

a further example of a stationary part of an inventive linear drive system in a schematic sectional view;

Fig. 7A

a schematic plan view of part of a fourth inventive elevator system with four moving parts;

Fig. 7B

a schematic plan view of part of a fifth elevator system according to the invention with auxiliary guide;

Fig. 8

a partial view of a sixth elevator system according to the invention with emergency guidance.

There is known a configuration of an elevator installation in which the technical / mechanical components are typically mounted on only one shaft wall. Such a configuration is also referred to as a backpack configuration, since the elevator car sits like a backpack asymmetrically on a cabin frame, which is provided with support means on one side in the Lift shaft is suspended and guided. The fact that only one shaft wall is occupied, the three other walls of the elevator car as accesses are freely determinable and can accordingly have up to three car doors. The at least one car door can adjoin the rear wall of the elevator car provided for the technical / mechanical components, one then speaks of a side backpack configuration, or it can be attached to the rear wall of the elevator car opposite this rear wall, which is referred to as a normal backpack configuration becomes. The expert has many possibilities of realization in this regard.

In Fig. 3 Now the backpack principle is transmitted to an elevator system with permanent magnet linear drive system, which is a highly schematic representation. As in Fig. 3 indicated, the elevator car 14 sits on an L-shaped cabin frame on the upright leg of the movable part 11 of the permanent magnet linear drive system is fixed. Perpendicular in the elevator shaft, the stationary part 10 of the drive is attached (analogous to the in Fig. 1A shown arrangement). There are strong attractive forces between the moving part 11 and the stationary part 10, which are directed in the normal direction and designated F _N. If the drive system is controlled in a suitable manner, the elevator car 14 can be moved up or down, as represented by the force vectors F _on and F _ab . In a backpack configuration of the type shown now comes - caused by the weight F _{K of} the loaded or unloaded elevator car 14 - a torque D added to the permanent magnet linear drive system acts as indicated by a double arrow.

Obviously, special measures are necessary to ensure accurate and secure guidance of the elevator car 14 for this backpack configuration. However, such guides would, if following the known approaches, provide further mechanical guide elements either adjacent to the elevator car 14 (for example, lateral guide rails 12 as in FIG Fig. 1B ) and / or above the elevator car 14 (for example, a guide cable 12 'as in FIG Fig. 2A ).

According to the invention, a completely different approach is taken, as described below with reference to the schematic FIGS. 4A and 4B is described.

In Fig. 4A is a schematic perspective view of a portion of a shaft rear wall 26 with the parts 20, 21 of the direct drive permanent magnet linear drive system shown. The stationary part 20 (also called support column) of the drive system is attached to the shaft rear wall 26 and has a longitudinal axis L _y , which extends parallel to the y-direction. In contrast to the previously known stationary parts, at least two inclined interaction surfaces a1, a2 arranged on the stationary part 20 are provided. In addition, the drive system has at least two movable parts 21 (also called units), wherein each one of the movable parts 21 is associated with one of the interaction surfaces a1, a2. Each interaction surface a1, a2 is associated with an interaction length b oriented in the y direction. The interaction length b is the length between a terminal guide point and the center of a movable 21. While repulsive forces occur at the terminal guide point, take place in the center of the movable member 21 attractive forces. The interaction length b is thus the effective length which prevents a tilting movement of the elevator car 24 in the xy plane. The interaction length b extends over a portion of the elevator car 24, it is less than or equal to the height of the elevator car 24. If the drive system is controlled in a suitable manner, the elevator car 24 can be moved up or down, as by the force vectors F _on and F _ab are shown. The ratio of attraction F _N divided by force vectors F _on and F _ab is referred to as force ratio K. The force ratio K is typically in the range of 2 to 20, preferably in the range of 3 to 10.

In Fig. 4B It can be seen by way of indication that the elevator car 24 is arranged in a backpack configuration. In order to be able to characterize the elevator car 24, the axes of rotation D _x , D _y and D _z engaging in the cabin center of gravity are in Fig. 4B shown. Between the movable parts 21 and the interaction surfaces a1, a2 of the stationary part 20 there are strong attractive forces, which are directed in the normal direction and again denoted by F _N. The distance between the car's center of gravity and the interaction surfaces a1, a2 is referred to as the line of action L _x . For distance determination is in accordance with Fig. 4B the center connecting end of the interaction surfaces a1, a2 extending in the z direction is used as a reference. The line of action L _x is therefore the shortest distance between the car's center of gravity and this center connecting. To optimize the efficiency of the permanent magnet linear drive system, the parts 20, 21 by a small air gap from each other spaced. The air gap is for example 1mm wide. Structurally, the air gap has the advantage that it allows non-contact guiding of each of the movable parts 21 on the corresponding stationary part 20. The vertical movement of the elevator car 24 is thus guided via the permanent magnet linear drive system via the moving parts 21 without contact on the stationary part.

Due to the oblique orientation of the interaction surfaces a1, a2 to each other, according to the invention results in a spatial - ie a 3-dimensional acting guide. Thus, a twisting or tilting of the elevator car 24 about the axes of rotation D _x , D _y and D _{z is} prevented. Due to this novel constellation, the torques caused by the backpack constellation (torque D in Fig. 3 ). In other words, the disadvantage of the eccentric suspension of the elevator cars 24 is compensated by the special design of the permanent magnet linear drive system. The ratio of line of action L _x divided by the interaction length b is referred to as eccentricity L _x / b. The eccentricity is typically 0.1 to 1.6, preferably 0.2 to 0.8.

As used herein, the term permanent magnet linear drive system is used to describe a direct drive system that includes a permanent magnet excited synchronous linear motor. The corresponding surfaces of the stationary part of the permanent magnet linear drive system are referred to as interaction surfaces, since there is an interaction between these surfaces and the movable units of the drive system. Instead of a linear drive system with at least one permanent magnet, it is also possible to use a linear drive system with at least one layer structure with at least one coil.

The movable part may be designed as a layered structure made by applying various layers to a substrate. The layers can be applied one after the other and optionally structured appropriately. In this way, three-dimensional structures of materials with different properties can be applied to the substrate. Individual layers may consist of an electrically insulating material or comprise regions of an electrically insulating material. The conductor track can be composed of conductor track sections which are each formed in different layers of the layer structure. Individual sections of the conductor track may, for example, cross over in different planes and be separated by an electrically insulating layer in the region of the crossing. Furthermore, it is possible to arrange individual sections of the conductor track in different layers separated by an intermediate layer and to provide an electrically conductive region in the intermediate layer, which establishes an electrical connection between these sections of the conductor track.

Layers of the type mentioned can also be applied on both sides of the substrate and optionally structured. For example, it is provided that a first part of the conductor track on a first surface of the substrate and a second part of the conductor track on a second surface of the substrate Substrate is formed, wherein an electrical connection between the first and the second part is made. This makes it possible to give the track a particularly complex geometric structure.

In a variant of the movable part, for example, at least a portion of the conductor track may have the form of a coil, wherein each coil comprises one or more windings. The coil may be disposed on one side of the substrate, but it may also be composed of various portions of the trace disposed on different sides of the substrate and electrically connected together.

In a further variant of the movable part, a plurality of serially arranged sections of the conductor track can each have the shape of a coil, the coils being designed such that adjacent coils generate magnetic fields with different polarity in the case of a current flow through the conductor track. For example, the track may be arranged such that upon supplying the track with a DC current to a surface of the movable member, a static magnetic field is generated whose polarity is a periodic reversal of polarity along the direction in which the movable member is movable relative to the static member is, has. In this way, a movable part can be formed to provide a large number of magnetic poles. With a suitable arrangement of the conductor track, the area available on the substrate can be used efficiently. This is relevant for optimizing the efficiency of the linear drive system and the accuracy with which the Movement of the movable part relative to the static part during operation of the linear drive system can be controlled.

In the following, further details of the invention are explained.

The two inclined interaction surfaces a1, a2 extend parallel to the longitudinal axis L _y and lie in planes which enclose an angle W greater than 0 ° and less than 180 ° (ie 0 ° <W <180 °). The surface normals of the interaction surfaces a1, a2 are directed toward the elevator car 24.

The magnitude of the angle W is a function of the force ratio K and the eccentricity L _x / b. Taking into account the arbitrarily chosen security condition that only 20% of the attraction is sufficient to stabilize the eccentrically loaded backpack lift, the following dependence results: sin W / 2 = 5 * (L _x / b) / K. Preferably, the angle W is between 20 ° and 160 °. For example, the angle W for an eccentricity of 0.7 and a force ratio K of 4 is about 120 °.

The movable part comprises at least two units 21, which are arranged together on a rear side 27 of the elevator car 24 and positively connected to the elevator car 24 that when driving each of the two units 21 an upward or downward movement along one of the interaction surfaces a1, a2 causes. Thereby, the elevator car 24 can be moved up or down. Due to the oblique arrangement of the two interaction surfaces a1 and a2, the attractive forces F _{N of} the drive system at least partially compensate each other. This helps to avoid the disadvantage of the very high attractive forces and associated friction losses of previous drive systems with permanent magnet linear drive.

Next is in Fig. 4B to recognize that the elevator car 24 on the rear side 27 a cabin frame 25, or an equal acting means, on the one hand, the two units 21 are positively mounted, and on the other hand designed for eccentric carrying the elevator car 24.

In the exemplary embodiment shown, the elevator installation is located in an elevator shaft, whereby according to the invention only one type of shaft rear wall 26 is required to accommodate the mechanical / technical elements of the elevator installation.

In Figs. 5A and 5B two plan views of parts of two other embodiments of elevator systems 1 according to the invention are shown. A rear shaft wall 26 is shown. At or in front of this shaft wall 26, the stationary part 20 of the drive system is arranged. The stationary part 20 has at least two inclined interaction surfaces a1 and a2. While the interaction surfaces a1 and a2 in the embodiment according to Fig. 5A are inclined away from each other, they are in the embodiment according to Fig. 5B inclined towards each other. The angle W is about 120 °.

The attractive forces F _{N of} the drive system can be broken down into the force components F _Q (transverse forces) and F _H (holding forces). The two transverse forces of the two units 21 compensate each other, since they are both directed parallel to the z-direction, but pointing in opposite directions. Effectively we carried the elevator car 24 by the holding forces F _H. By this partial compensation of the forces, the otherwise existing friction between the stationary part 20 and the moving parts 21 is significantly reduced.

The stationary part 20 is according to the invention in cross-section perpendicular to the longitudinal axis L _y preferably polygonal and the surface normals of the two interaction surfaces a1, a2 tend away from each other or tend towards each other. Both times they point to the elevator car 24.

Due to the inclined arrangement of the interaction surfaces a1, a2, in particular torques D _{z are} compensated which result from the eccentric suspension of the elevator car 24 resulting from the backpack configuration.

It is caused by the respective attractive forces F _N of the respective interaction surface a1, a2 unit 21 both a Verdrehstabilisierung the elevator car 24 about the axis of rotation D _x , which is perpendicular to the longitudinal axis L _y and perpendicular to the back of the elevator car 24, as well a Verdrehstabilisierung the elevator car 24 causes about a rotational axis D _z , which is perpendicular to the longitudinal axis L _y and parallel to the back of the elevator car 24. By the lateral spacing of the units 21 from each other, a rotation about the y-axis D _{y is} prevented.

According to the invention, therefore, the attractive forces of the permanent magnets of the permanent magnet linear drive system serve for stabilizing the eccentrically arranged elevator car 24 and for spatial stabilization and guidance. By the eccentrically acting weight force F _K , the reaction forces are reduced to support the leadership of the drive system and thereby reduces the frictional forces.

By a variation of the angle W, the compensation of the transverse forces F _Q , as well as the stabilization in the axis of rotation D _z can be defined in the design of an elevator installation or a corresponding permanent magnet linear drive system. The stationary part 20 of the permanent magnet linear drive system is thus used for the spatial guidance of the backpack elevator car 24.

The stationary part 20 has a niche or tray a3 in an upper area. As in Fig. 4A 7A and 7B, the tray a3 is located on the upper end of the stationary part 20. It is at least partially enclosed by the interaction surfaces a1, a2 and can be used for mounting manhole components. Thus, shaft components such as a position sensor, a brake partner of a holding brake or even a form-fitting retaining bolt can be attached here.

Embodiments in which the movable parts 21 of the drive system are fastened in the upper region of the rear of the cabin 27 are particularly advantageous.

The embodiments can be realized with or without further support means for supporting the elevator car 24. Such support means are, for example, steel or aramid ropes or belts which connect the elevator car 24 with a counterweight.

Further advantageous embodiments are in the Figs. 7A and 7B shown. Fig. 7A shows an elevator system 1, each with two in the y direction superimposed moving parts 21 per interaction surface a, b. Accordingly, the interaction length b extends from the terminal guide point of a first movable part 21 to the center of the second movable part 21 of the same interaction area a1, a2. Fig. 7B shows an elevator system 1 with a main guide in moving parts 21 and an auxiliary guide in at least one guide shoe 22. While each of the movable parts 21 is guided on one of the two obliquely inclined interaction surfaces a, b, the guide shoe 22 laterally adjacent to the stationary part 20th guided on a guide rail. According to Fig. 7B is shown on the left and right of the stationary part 20 per interaction surface a, b each guide shoe 22. Accordingly, the interaction length b extends from the terminal guide point in the guide shoe 22 to the center of the movable part 21 of an interaction surface a1, a2.

According to the invention, the primary part of the drive system can be integrated either in the stationary part 20 or in the moving parts 21. The secondary part of the drive system is then in the other part.

Preferably, the coils S of the electromagnets (such as in Fig. 8 can be seen) of the primary part of Drive system in the stationary part 20 while the permanent magnets of the secondary parts 21 in the moving part of the drive system. But it can also be chosen the reverse arrangement.

But it can also drive systems are used, in which the primary part comprises both coils and permanent magnets.

In the Figures 6A and 6B Further examples of stationary parts 20 of a permanent magnet linear drive system according to the invention are shown in sectional view.

In Fig. 8 an emergency guide 29 according to the invention is shown, which sits in the example shown at the top of the cabin frame 25.

The emergency guide 29 engages at least partially around or behind the stationary part 20, to prevent tilting (about the D _z axis of rotation) of the elevator car 24, if the permanent magnet linear drive system should fail (for example, in the event of a power failure), or by the permanent magnet Linear drive system induced attractions should subside. The emergency guide 29 is designed so that it runs without contact along the stationary part 20 in normal operation. It comes only in case of emergency for mechanical intervention. Preferably, 24 emergency guides 29 are provided at the two upper corners of the elevator cars.

It is regarded as an advantage of the illustrated backpack arrangement with drive system on the cabin frame 25 that the actual elevator car 24 can be isolated from the frame 25 (sound).

The inventive permanent magnet linear drive systems and the corresponding elevator systems are space-saving in the shaft projection.

It is a further advantage that the engine attractive forces are in part compensated by the torque caused by the cabin weight F _K and that the frictionless contact over the air gap results in no friction losses as in conventional arrangements.

It is also advantageous that the use of at least two movable parts 21 provides redundancy in the drive.

The individual elements and aspects of the various embodiments can be combined as desired.

Claims (13)

1. Lift installation (1) with a lift cage (24) and a linear drive system with a stationary part (20), the longitudinal axis (L_y) of which is arranged vertically along a shaft wall (26) of the lift installation (1), and with a movable part which moves along the stationary part (20) when the linear drive system is controlled in drive, and wherein the lift cage (24) is arranged in a rucksack configuration and is movable by the linear drive system along the stationary part (20), characterised in that

   - the stationary part (20) has at least two inclined interaction surfaces (a1, a2) which extend parallel to the longitudinal axis (L_y) and which lie in a plane, which includes an angle (W) between 0° and 180° and the surface normals of which are oriented towards the lift cage (24), and

   - the movable part comprises at least two units (21) which are so arranged in common on a rear side (27) of the lift cage (24) and mechanically positively connected with the lift cage (24) that when drive control is carried out each of the two units (21) produces a movement along one of the interaction surfaces (a1, a2) in order to thereby move the lift cage (24).
2. Lift installation (1) according to claim 1, characterised in that the stationary part (20) is polygonal in cross-section perpendicular to the longitudinal axis (L_y) and the surface normals of the two interaction surfaces (a1, a2) are inclined away from or towards one another.
3. Lift installation (1) according to claim 1 or 2, characterised in that between a first one (a1) of the two interaction surfaces and a first one of the two units (21) there is a first traction force (F_N) substantially parallel to the surface normal of this interaction surface (a1) and that between the second one (a2) of the two interaction surfaces and the second one of the two units (21) there is a second attraction force (F_N) substantially parallel to the surface normal of this interaction surface (a2).
4. Lift installation (1) according to claim 3, characterised in that the first and the second attraction force (F_N) act at least partly opposite one another and the effective holding forces (F_H) acting between each of the units (21) and the associated interaction surface (a1, a2) therefore reduce.
5. Lift installation (1) according to claim 1 or 2, characterised in that the inclined arrangement of the interaction surfaces (a1, a2) compensate for torques (D_x, D_y D_z) resulting from the eccentric suspension of the lift cage (24) due to the rucksack configuration.
6. Lift installation (1) according to claim 1 or 2, characterised in that the two units (21) are arranged at the same height, but at a spacing from one another, on the rear side (27) of the lift cage (24) so as to produce a rotational stabilisation of the lift cage (24) about an axis (D_y) extending parallel to the longitudinal axis (L_y).
7. Lift installation (1) according to claim 1 or 2, characterised in that due to the inclined arrangement of the interaction surfaces (a1, a2) and the corresponding attraction forces of the unit (21) opposite the respective interaction surface (a1, a2) there is produced not only a rotational stabilisation of the lift cage (24) about an axis (D_x) extending perpendicularly to the longitudinal axis (L_y) and perpendicularly to the rear side of the lift cage (24), but also a rotational stabilisation of the lift cage (24) about an axis (D_z) extending perpendicularly to the longitudinal axis (L_y) and parallel to the rear side of the lift cage (24).
8. Lift installation (1) according to one of the preceding claims, characterised in that due to the inclined arrangement of the interaction surfaces (a1, a2) the stationary part (20) serves as a three-dimensional guide element for a vertical movement of the lift cage (24) along the shaft wall (26).
9. Lift installation (1) according to one of the preceding claims, characterised in that the units (21) are separated from the stationary part (20) by way of an air gap and contactlessly guide the vertical movement of the lift cage (24) along the shaft wall (26).
10. Lift installation (1) according to one of the preceding claims, characterised in that a guide shoe (22) guides the vertical movement of the lift cage (24) on a guide rail.
11. Lift installation (1) according to one of the preceding claims, characterised in that provided in an upper region of the lift cage (24) is an emergency guide (29) which engages at least partly around or behind the stationary part (20) in order to prevent tipping away of the lift cage (24) in case the linear drive system should fail or the attraction forces produced by the linear drive system should drop away.
12. Lift installation (1) according to one of the preceding claims, characterised in that an upper region of the stationary part (20) has a rest (a3) which can be used for mounting shaft components such as a position transmitter and/or a brake partner of a holding brake and/or a mechanically positively acting holding lock.
13. Lift installation (1) according to one of the preceding claims, characterised in that the linear drive system comprises at least one permanent magnet or at least one layer structure with at least one coil.

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