EP2516310B1 - Lift assembly with counterweight and counterweight guide - Google Patents

Description

The present invention relates to an elevator system with counterweight and counterweight guide.

It is a general effort in the design and construction of elevator systems to find as safe, simple, inexpensive and stable solutions. This is possible, inter alia, by a design of the elevator components that is as lean and space-saving as possible.

Conventional counterweights are typically guided by counterweight guides along a hoistway wall. These counterweight guides are attached to the shaft wall. Since the shaft walls are often not flat due to structural tolerances, the corresponding fasteners must be designed so that they can compensate for certain tolerances. Furthermore, many attachment points are necessary over the shaft height, resulting in a high assembly cost.

Often, the space in a hoistway narrowed, which makes it necessary to reduce the dimensions of the individual components as possible. However, this must not be at the expense of safety, robustness and comfort.

There are various approaches to enable joint management of a counterweight and an elevator car. Corresponding examples are known from the following documents.

From the document US Pat. No. 1,896,900 is an elevator system with counter-guided elevator car and counterweight known. The elevator system includes a pair of vertical guide rails that extend along the entire shaft. Both the elevator car and the counterweight run along these guide rails.

The document EP 0 745 552 A1 relates to a modular construction elevator with two columnar guides for guiding an elevator car. The elevator car has a self-propelled with wheels to move along the running surfaces of the guides can. Counterweights are used, which run inside the columnar guides.

The document DE 4423412 A1 relates to a guide device for a car and a counterweight, which are movable along a common rail pair.

The document EP 0 442 230 A1 describes a device which allows to guide a counterweight and an elevator car along a common column. The common column is mounted on a shaft wall and extends along the entire travel distance in the shaft.

The object of the present invention is to eliminate the disadvantages of elevator systems according to the prior art and to develop counterweight guides which are optimized in terms of their dimensions, but also in terms of their complexity, their weight and other properties compared to the prior art.

In addition, the counterweight guide should allow a simpler and less expensive installation.

The solution of the problem consists in an inventive counterweight guide. The invention enables a new and simpler construction of the counterweight guide.

In the inventive counterweight guide is a reciprocal, respectively mutual leadership of elevator car and counterweight. The counterweight guide is designed so that there is no collision or obstruction when the elevator car and counterweight are brought together. The counterweight guide extends along a meeting zone. In this case, it is relatively short compared to the entire travel path of the elevator car.

In order to prevent collisions when crossing the elevator car and counterweight at about half the shaft height, the mutual, respectively mutual counterweight guide is preferably proposed between the elevator car and counterweight. The inventive counterweight guide is also referred to as a common counterweight guide or as a relative counterweight guide. The term relative counterweight guidance indicates that the counterweight is guided relative to the elevator car.

A mobile counterweight guide may be attached either to the elevator car or to the counterweight.

A stationary, non-movable counterweight guide is preferably arranged between elevator car and counterweight in the elevator shaft, wherein both the counterweight and the elevator car engage via a corresponding sliding element (eg via a sliding block) in this counterweight guide and thus ensure a safe, collision-free movement of the elevator car and counterweight , An attachment of the counterweight guide over the entire shaft height at the shaft wall is no longer necessary.

Depending on the embodiment, a fixation of the counterweight guide can be provided only in the pit head and in the pit.

The present, new counterweight control concept is based on the fact that the function of the counterweight guide is primarily to prevent a collision of counterweight and elevator car.

Fig. 1

eine schematische Seitenansicht in Schnittdarstellung einer konventionellen Aufzugsanlage mit schachtwandnaher Gegengewichtsführung;

Fig. 2

eine schematische Seitenansicht in Schnittdarstellung einer konventionellen Aufzugsanlage, die drei Etagen bedient, wobei die Aufzugskabine und das Gegengewicht in drei unterschiedlichen Positionen gezeigt sind;

Fig. 3A

eine schematische Querschnittsdarstellung einer erfindungsgemässen Aufzugsanlage mit mobiler Gegengewichtsführung;

Fig. 3B

eine schematische Perspektivdarstellung einer erfindungsgemässen Gegengewichtsführung nach Fig. 3A;

Fig. 4

eine schematische Rückansicht einer weiteren erfindungsgemässen mobilen Gegengewichtsführung samt Aufzugskabine;

Fig. 5A

eine schematische Querschnittsdarstellung einer weiteren erfindungsgemässen Aufzugsanlage mit mobiler Gegengewichtsführung;

Fig. 5B

eine schematische Seitenansicht in Schnittdarstellung der erfindungsgemässen Gegengewichtsführung nach Fig. 5A, wobei der Aufzugsschacht verkürzt dargestellt ist, um die Aufzugskabine in einer obersten und das Gegengewicht in einer untersten Position zeigen zu können;

Fig. 6A

eine schematische Querschnittsdarstellung einer weiteren erfindungsgemässen Aufzugsanlage mit stationärer Gegengewichtsführung;

Fig. 6B

eine schematische Draufsicht der stationären Gegengewichtsführung nach Fig. 6A;

Fig. 6C

eine schematische Vorderansicht der stationären Gegengewichtsführung nach Fig. 6A;

Fig. 7

eine schematische Seitenansicht in Schnittdarstellung einer stationären Gegengewichtsführung, wobei der Aufzugsschacht verkürzt dargestellt ist, um die Aufzugskabine in einer obersten und das Gegengewicht in einer untersten Position zeigen zu können. Die in Fig. 7 gezeigte Ausführungsform ist nicht Gegenstand der Erfindung;

Fig. 8

eine schematische Seitenansicht in Schnittdarstellung einer weiteren erfindungsgemässen stationären Gegengewichtsführung, wobei ein mittlerer Abschnitt eines Aufzugsschachts dargestellt ist;

Fig. 9

eine schematische Vorderansicht einer weiteren stationären Gegengewichtsführung;

Fig. 10A

eine schematische Querschnittsdarstellung einer weiteren erfindungsgemässen Aufzugsanlage mit stationärer Gegengewichtsführung;

Fig. 10B

eine schematische Draufsicht der stationären Gegengewichtsführung nach Fig. 10A;

Fig. 11

eine schematische Draufsicht einer weiteren stationären Gegengewichtsführung.

In the following, details and advantages of the invention will be described in detail with reference to embodiments and with reference to the drawings.
Show it:

Fig. 1

a schematic side view in a sectional view of a conventional elevator system with close to the quay wall counterweight;

Fig. 2

a schematic side view in section of a conventional elevator system that operates three floors, the elevator car and the counterweight are shown in three different positions;

Fig. 3A

a schematic cross-sectional view of an inventive elevator system with mobile counterweight guide;

Fig. 3B

a schematic perspective view of an inventive counterweight guide according to Fig. 3A ;

Fig. 4

a schematic rear view of another inventive mobile counterweight guide including elevator car;

Fig. 5A

a schematic cross-sectional view of another elevator system according to the invention with mobile counterweight guide;

Fig. 5B

a schematic side view in a sectional view of the inventive counterweight guide according to Fig. 5A , wherein the elevator shaft is shown shortened to the elevator car in a top and the Be able to show counterweight in a lowermost position;

Fig. 6A

a schematic cross-sectional view of another elevator system according to the invention with stationary counterweight guide;

Fig. 6B

a schematic plan view of the stationary counterweight guide according to Fig. 6A ;

Fig. 6C

a schematic front view of the stationary counterweight guide according to Fig. 6A ;

Fig. 7

a schematic side view in a sectional view of a stationary counterweight guide, wherein the elevator shaft is shown shortened to show the elevator car in a top and the counterweight in a lowermost position can. In the Fig. 7 embodiment shown is not the subject of the invention;

Fig. 8

a schematic side view in a sectional view of another inventive stationary counterweight guide, wherein a central portion of a hoistway is shown;

Fig. 9

a schematic front view of another stationary counterweight guide;

Fig. 10A

a schematic cross-sectional view of another elevator system according to the invention with stationary counterweight guide;

Fig. 10B

a schematic plan view of the stationary counterweight guide according to Fig. 10A ;

Fig. 11

a schematic plan view of another stationary counterweight guide.

The same reference numerals mean the same components or equivalent components. Information such as right, left, up, down, front and back are related to the respective arrangement in the figures. The xyz coordinate system shown is only for better explanation of the individual directions.

Fig. 1 schematically shows an elevator system 10, as it corresponds to the prior art. The elevator installation 10 has a counterweight guide in the form of counterweight guide rails 4, which extend along a shaft wall of an extension shaft 6.

Based on Fig. 1 the essential elements of such an elevator installation 10 are explained. In the example shown, the elevator installation 10 comprises an elevator car 1, which is connected to a counterweight 2 via a suspension element 5. In the upper shaft area corresponding drive means and pulleys may be provided, as in Fig. 1 indicated schematically by two discs 7 and 8. The elevator car 1, the counterweight 2 and the other elements and components of the elevator installation 10 are arranged and designed so that the elevator car 1 can be moved vertically in the elevator shaft 6 (ie in the y-direction). In this case, the elevator car 1 and the counterweight 2 move in opposite directions. Both the elevator car 1 and the counterweight 2 are each guided on guide rails, which typically extend over the entire travel path in the shaft height direction (ie in the y direction). In Fig. 1 one of the elevator guide rails 3 is indicated by a dashed double line. One of the counterweight guide rails 4 is shown by a single dashed line.

Fig. 2 schematically shows further details of a conventional elevator system 10. Based on Fig. 2 Further terms, directional indications and ranges are used which are used in the description. The elevator shaft 6 extends from a shaft bottom 11 to a shaft head 12. In the region of the shaft head 12, a machine room is provided here for the drive and, for example, the drive or deflection pulleys 7, 8 (see FIG Fig. 1 ). The engine room can also be provided in the region of the shaft bottom 11. The elevator system 10 operates here three floors E1 - E3. At the level of each of the three floors E1, E2, E3 each a shaft door 9 is provided. In the lowermost position, the elevator car is denoted by the reference numeral 1.1 and indicated by a dotted circumference. When the elevator car 1.1 is in the lowermost position, the counterweight is in the uppermost position. The counterweight in the uppermost position is designated by the reference numeral 2.1. The counterweight 2.1 is indicated here by a dotted circumferential line. In the uppermost position, the elevator car is designated by the reference numeral 1.2 and indicated by a dotted circumferential line. When the elevator car 1.2 is in the uppermost position, the counterweight is in the lowermost position. The counterweight in the lowermost position is designated by the reference numeral 2.2. The elevator car 2 and the counterweight 2 meet approximately at half the travel Ymax. The corresponding meeting point is in Fig. 2 designated BP. In the area of this meeting point BP, a so-called encounter zone BZ is defined, which extends in the y direction upwards and downwards, viewed from the point of encounter BP.

The invention provides several embodiments, which are described below. A first embodiment is in Fig. 3A shown in the form of a cross-sectional view in a plane which extends parallel to the xz plane.

The elevator installation 10 is distinguished in all embodiments by the fact that it comprises an elevator shaft 6, an elevator cage 1, a counterweight 2 and suspension means 5. These elements / components 1, 2, 5, 6 are arranged and designed so that the support means 5 carry and drive the elevator car 1 and the counterweight 2. The elevator car 1 moves during operation along a travel path Ymax opposite to the counterweight 2. The elevator car 1 and the counterweight 2 move past each other in the meeting zone BZ. The elevator installation 10 comprises a new and inventive type of counterweight guide for guiding the counterweight 2, which is identified below by reference numeral 20.

The counterweight guide 20 is characterized by the fact that it is used in the meeting zone BZ.

The counterweight guide 20 is designed to provide a direct mechanical interaction between the elevator car 1 and the counterweight guide 20 on the one hand and between the counterweight 2 and the counterweight guide 20 on the other hand for guiding the counterweight 2 in relation to the elevator car 1 , The counterweight guide 20 thus serves in all embodiments as a mutual, respectively mutual counterweight guide 20. The inventive counterweight guide 20 is therefore also referred to as a common counterweight guide 20.

The counterweight guide 20 of the first embodiment is characterized in that it is designed as a mobile counterweight guide 20. Either this counterweight guide 20 is attached to the elevator car 1, as in Fig. 3A shown, or it is attached to the counterweight 2 (not shown).

At the in Fig. 3A In the embodiment shown, the counterweight guide 20 has a sliding surface 25 (see Fig. 3B ), which is designed so that the counterweight 2 slides along this sliding surface 25 as the elevator car 1 moves past the counterweight 2. In Fig. 3B Details of such a counterweight guide 20 are shown. The counterweight guide 20 is here designed as an element with a rectangular sliding surface 25, which is preferably adapted from the extension in the z-direction to the width (in the z-direction) of the counterweight 2. Laterally, guide edges 26 are provided so that when the counterweight 2 moves against one another on the elevator car 1, including the counterweight guide 20, a lateral guidance in the xy plane is provided. The rear side 27 is preferably designed so that it can be fixed mechanically connected to the rear wall and / or a support structure of the elevator car 1. Preferably, when attaching the counterweight guide 20 damping means are used to keep sounds and vibrations from the elevator car 1 away.

In Fig. 4 a variant of the first embodiment is shown. In this figure, one can see a part of the rear wall of the elevator car 1 together with the counterweight guide 20 arranged on this rear wall. Here, too, the counterweight guide 20 comprises a sliding surface 25 and lateral guide edges 26. In the inlet and outlet zones so-called inlet guides 23 and outlet guides 24 are provided. These guides 23, 24 serve to ensure a better "threading" of the counterweight 2 in the counterweight guide 20 when the elevator car 1 and the counterweight 2 meet in the elevator shaft 6. Preferably, the inlet guides 23 and outlet guides 24 include inclined ramps, switches, funnels, or other elements that effect (mutual) alignment.

On the counterweight 2 special sliding elements and / or sliding surfaces may be provided to allow a gentler (less vibration and noise) interaction when encountering. Preferred is an embodiment in which on the counterweight 2 rollers, wheels or rollers are present, which roll on the sliding surface 25. These rollers, wheels or rollers may be made rubbery to provide better acoustic decoupling.

The counterweight 20 of the FIGS. 3A . 3B or 4 can also be attached to the counterweight 2 accordingly. In this case, a sliding surface is provided, which is designed so that the elevator car 1 with the rear wall, or with sliding elements, slides along this sliding surface, while the elevator car 1 moves past the counterweight 2. Preferred is an embodiment in which in the region of the back 27 rollers, wheels or rollers are present, which roll on the sliding surface.

On the counterweight 2 special sliding elements and / or sliding surfaces may be provided to allow a gentler (less vibration and noise) interaction when encountering. The same applies to the elevator car 2 when the counterweight guide 20 is located on the counterweight 2.

The counterweight guide 20 of a further embodiment is again characterized in that it is designed as a mobile counterweight guide 20. Either this counterweight guide 20 is attached to the elevator car 1, as in Fig. 5A shown, or it is attached to the counterweight 2 (not shown).

At the in Fig. 5A In the embodiment shown, the counterweight guide 20 has one or two slide rails or guide rails 21, which are designed such that the counterweight 2 together with corresponding guide means 22 is guided along the counterweight guide 20, while the elevator car 1 moves past the counterweight 2. In Fig. 5A Details of such a counterweight guide 20 with guide rails 21 are shown. The guide rails 21 are here laterally positioned on the back 27 of the elevator car 1 (similar to the guide edges 26 in FIG Fig. 3A and 3B ), so that when the counterweight 2 moves against each other on the elevator car 1 together with the counterweight guide 20, there is lateral guidance in the xy plane. The guide rails 21 are preferably designed so that they can be firmly mechanically connected to the rear wall 27 and / or a support structure of the elevator car 1. Preferably, when attaching the counterweight guide 20 damping means are used to keep sounds and vibrations from the elevator car 1 away.

Preferably, the corresponding guide means 22 are designed as rollers, wheels, rollers, pins or counter rails. In Fig. 5A come cone-shaped guide means 22 are used.

In Fig. 5B is a highly schematic representation of the embodiment according to Fig. 5A shown. The elevator shaft 6 is shown shortened. In Fig. 5B it can be seen that the counterweight guide 20 is seated on the rear wall 27 of the elevator car 1. The elevator car 1 is located close to the shaft head 12 when the counterweight 2 is close to the shaft foot 11. When the elevator car 1 moves down, the counterweight 2 moves upwards in the opposite direction. In the area of the meeting zone BZ, the guide means 22, which are laterally seated on the counterweight 2, slide in the guide rails 21 on the elevator car 1. The meeting zone BZ moves in solidarity with the elevator car 1.

In the inlet and outlet zones, so-called inlet guides 23 and outlet guides 24 are preferably provided. These guides 23, 24 serve to ensure a better "threading" of the counterweight 2 in the counterweight guide 20 when the elevator car 1 and the counterweight 2 meet in the elevator shaft 6. Preferably, the inlet guides 23 and outlet guides 24 include inclined ramps, switches, funnels, or other elements that effect (mutual) alignment.

Preferably, a fixation for the counterweight 2 in the pit or in the region of the shaft foot 11 may be provided. In Fig. 5B Such a fixation in the form of a protective space cover 28 is indicated.

Preferably, a further fixation for the counterweight 2 may be provided at the shaft head 12 or in the upper shaft area. In Fig. 5B Such a fixation in the form of a pin receptacle 29 is indicated. At the top of the counterweight 2 is a corresponding pin 30, which penetrates into the pin receptacle 29 upon reaching the shaft head 12.

The counterweight guide 20 of a further embodiment is characterized in that it is designed as a stationary counterweight guide 20. This stationary counterweight guide 20 extends only over a short length in the y-direction, i. it extends only over a longitudinal section (viewed in the y direction) which is shorter than the entire travel path Ymax of the elevator car 1.

In Fig. 6A Figure 4 is a schematic cross-sectional view of such a "stationary" embodiment. At the in Fig. 6A In the embodiment shown, both the elevator car 1 and the counterweight 2 are guided along a common counterweight guide 20. However, the guide of the elevator car 1 is primarily via the guide rails 3. The common counterweight guide 20 is here in the intermediate region ZB between the elevator car 1 and the counterweight 2 is arranged. In the counterweight guide 20 is here a kind of guide rail 31 with double guide function. On the rear side of the guide rail 31 means for guiding a corresponding guide means 22 of the counterweight 2 are provided. On the front of the guide rail 31 means for guiding a corresponding guide means 32 of the elevator car 1 are provided.

In Fig. 6B Details of a possible embodiment of the guide rail 31 serving as a stationary counterweight guide 20 are shown. The corresponding guide means 22 and 32 comprise a sliding body 22.1, 32.1 and a bolt 22.2, 32.2 for fastening the sliding bodies 22.1, 32.1 to the counterweight 2 or to the elevator car 1.

Preferably, two such guide means 22 for the counterweight 2 and two such guide means 32 for the pullout cab 1 are present, to a tilting or twisting of the counterweight 2 relative to the elevator car 1 in the yz plane to prevent. In Fig. 6C Details of a possible embodiment of the guide rail 31 serving as a counterweight guide 20 are shown. It is a view of the counterweight guide 20 viewed in the x direction. You can in Fig. 6C the two guide means 32 of the elevator car 1 recognize. However, the elevator car 1 is not shown. The distance A between the two guide means 32 in the y-direction is smaller than the height of the elevator car HA. The longitudinal extent LG of the counterweight guide 20 corresponds approximately to the height HA of the elevator car 1.

The corresponding guide means 22 and 32 run only in the area of the meeting zone BZ in the guide rail 31 (see, eg Fig. 8 ). The counterweight guide 20 is significantly shorter than the travel path Ymax. Preferably, it has considered a longitudinal extent LG in the y-direction, which corresponds approximately to the height HA of the elevator car 1. In the Figures 6B . 8 and 9 corresponding embodiments are shown with short length LG.

In Fig. 9 Details of a possible embodiment of the guide rail 31 serving as a counterweight guide 20 are shown. It is a view of the counterweight guide 20 viewed in the x direction. You can in Fig. 9 two guide means 32 of the elevator car 1 recognize. The elevator car 1 itself is not shown. The distance A between the two guide means 32 in the y-direction is smaller than the height of the elevator car HA. To give the guide means 32 stability, which improves the smooth running in the counterweight guide 20, the two guide means 32 may be connected by a flat iron or profile 33 with each other. This flat iron or profile 33 is optional. The flat iron or profile 33 can also in the embodiment of Fig. 6C be used.

In the inlet and outlet zones, so-called inlet guides 23 and outlet guides 24 may be provided, as in FIG Fig. 9 indicated by way of example. These guides 23, 24 serve to ensure a better "threading" of the corresponding guide means 22 of the counterweight 2 and the corresponding guide means 32 of the elevator car 1 in the counterweight guide 20. Preferably, the inlet guide 23 and outlet guide 24 include inclined ramps, turnouts, funnels, or other elements that effect a (mutual) alignment.

In Fig. 10A is a schematic cross-sectional view of another "stationary" embodiment shown. At the in Fig. 10A In the embodiment shown, both the elevator car 1 and the counterweight 2 are guided along a common counterweight guide 20. This common counterweight guide 20 is arranged here in both side areas behind the elevator car 1 and the counterweight 2. In the counterweight guide 20 is here a kind of guide rail 31 with double guide function. On the outwardly facing sides of the guide rails 31 means for guiding the corresponding guide means 22 of the counterweight 2 are provided. On the inwardly facing (ie in the direction of the elevator car 1 facing) sides of the guide rail 31 means for guiding the corresponding guide means 32 of the elevator car 1 are provided.

In Fig. 10B Details of a possible embodiment of a serving as a counterweight guide 20 guide rail 31 are shown with dual leadership function. The corresponding guide means 22 and 32 comprise a sliding body 22.1, 32.1 and a bolt 22.2 with an angle for attaching the slider 22.1 to the counterweight 2. The guide means 32 comprises a bolt 32.2 for directly attaching the slider 32.1 to the elevator car 1 or to a supporting structure.

In Fig. 11 For example, details of another possible embodiment of a stationary counterweight guide 20 with dual guidance function are shown. This counterweight guide 20 comprises short separate (individual) guide rails 34, 35, which are fastened laterally to the counterweight 2 and to the elevator car 1. Here, the guide function assumes a stationary guide profile 36. End plates or sliding elements 37 can be arranged on the two legs of the stationary guide profile 36, which both point in the z-direction, which engage in the respective guide rails 34, 35 and slide there. These end plates or sliding elements 37 lie in an xy plane.

The embodiments of the FIGS. 10A, 10B and the Fig. 11 have the advantage that they are very space-saving, since they claim no space between the counterweight 2 and the rear wall 27 of the elevator car 1.

According to the invention, the counterweight 2 is hung as accurately as possible in its center of gravity in the various embodiments. This can for example be done with a support means 5 or a bundle of support means, as in the FIGS. 3A . 5A and 6A indicated. However, the counterweight 2 can also be carried symmetrically, for example, by two suspension elements 5 or two bundles of suspension elements, as in FIG Fig. 10A seen. This variant gives the counterweight 2 more stability in relation to a rotation about an axis of rotation in the y-direction. That is, the counterweight 2 is more stable in the yz plane.

By a suspension in the center of gravity ( FIGS. 3A . 5A and 6A ) or symmetrically to the center of gravity ( Fig. 10A ), the counterweight 2 in normal operation will always move up and down in the range of motion above its floor plan lying in the xz plane. This up and down movement takes place in the yz plane. In order to prevent collisions when crossing the elevator car 1 and counterweight 2 at about half the shaft height, the common counterweight guide 20 between the elevator car 1 and counterweight 2 is proposed. The mobile counterweight guide 20 may be attached to either the elevator car 1 or the counterweight 2. The stationary counterweight guide 20, however, is fixed in the elevator shaft 6.

In none of the embodiments is more a fastening of the counterweight guide 20 over the entire shaft height, or along the entire travel Ymax, necessary on a shaft wall. In the pit area, some guiding function may also be provided e.g. be realized by the necessary shelter space cover 28. In the region of the shaft head 12 may also be provided an optional guide, as described.

• Platzsparende Bauweise.
• Optimale Ausnutzung des Schachtgrundrisses. Die Erfindung ist daher z. B. für Modernisierungs-Lösungen einsetzbar.
• Die Gegengewichtsführung 20, respektive die Führungsschienen 21, 31, 34, 35, können kostengünstig hergestellt werden (z.B. als Blech-Walzprofil oder als Alu-Strangpressprofil).
• Es ergibt sich ein geringerer Montageaufwand. Es reichen je nach Ausführungsform lediglich zwei Fixpunkte im Aufzugsschacht 6. Bei stationären Ausführungsformen mit kurzer Gegengewichtsführung 20 (siehe z.B. Fig. 6C, 8, 9, 10A, 10B, 11), reicht z.B. eine Befestigung an wenigen (z.B. zwei) Fixpunkten in Bereich einer Schachtwand.
• Es entfällt ein aufwändiges Aussenkeln der GegengewichtsFührung, da sich die Bewegungsebene (y-z-Ebene) des Gegengewichts 2 automatisch an jener der Aufzugskabine 1 orientiert.
• Die Gesamtkonstruktion der Gegengewichtsführung 20 ist deutlich einfacher als bisherige Lösungen.
• Die Gegengewichtsführung 20 weist eine reduzierte Anzahl von Schnittstellen der Aufzugs-Schachtausrüstung zum umgebenden Gebäude auf. So müssen nur noch die Kabinen-Aufzugsführungsschienen 3 (siehe Fig. 1) über die gesamte Schachthöhe an den Schachtwänden befestigt werden.
• Die neue Gegengewichtsführung 20 wirkt stabilisierend auf die Aufzugskabine 1.
• Es ist ein einfache Wartung der neue Gegengewichtsführung 20 von der Aufzugskabine 1 aus möglich.
• Die neue Gegengewichtsführung ermöglicht eine deutliche Variantenreduktion im Vergleich zu heutigen Gegengewichtsbefestigungen.
• Die vorliegende neue Gegengewichtsführung 20 ist ideal kombinierbar mit der Erfindung mit Titel "Aufzugsanlage mit Gegengewicht", die am 03.09.2009 unter der Anmeldenummer EP09169397.8 eingereicht worden ist.

The invention offers numerous advantages, some of which have already been mentioned in the description. The following advantages are particularly important:

• Space-saving design.
• Optimum utilization of the shaft layout. The invention is therefore z. B. applicable for modernization solutions.
• The counterweight guide 20, respectively the guide rails 21, 31, 34, 35, can be produced inexpensively (eg as a sheet metal rolled section or as an aluminum extruded profile).
• This results in a lower installation costs. Depending on the embodiment, only two fixed points in the elevator shaft 6 are sufficient. In the case of stationary embodiments with a short counterweight guide 20 (see, for example, FIG Fig. 6C . 8th . 9 . 10A, 10B, 11 ), for example, attachment to a few (eg two) fixed points in the area of a shaft wall is sufficient.
• It eliminates an elaborate Ausstill the counterweight guide, since the movement plane (yz plane) of the counterweight 2 is automatically oriented to that of the elevator car 1.
• The overall construction of the counterweight guide 20 is much simpler than previous solutions.
• The counterweight guide 20 has a reduced number of interfaces of elevator shaft equipment to the surrounding building. Thus, only the car elevator guide rails 3 (see Fig. 1 ) are fastened to the shaft walls over the entire shaft height.
• The new counterweight guide 20 has a stabilizing effect on the elevator car 1.
• It is easy maintenance of the new counterweight guide 20 of the elevator car 1 from possible.
• The new counterweight guide allows a significant reduction in the number of variants compared to today's counterweight attachments.
• The present new counterweight guide 20 is ideally combinable with the invention entitled "elevator system with counterweight", which on 03.09.2009 under the application number EP09169397.8 has been filed.

Claims (7)

1. Lift installation (10) with a lift shaft (6), a lift car (1), a counterweight (2) and with supporting and drive means (5) for driving and carrying the lift car (1), wherein the lift car (1) moves during operation along a movement path (Ymax) in the opposite direction to the counterweight (2), the lift car (1) and the counterweight (2) move past each other in a passing zone (BZ), and wherein the lift installation (10) comprises a counterweight guide for guiding the counterweight (2), characterized in that

   - the counterweight guide (20) is used in the passing zone (BZ) and extends in the shaft longitudinal direction (y) only along a region (LG) which is shorter than the entire movement path (Ymax), and

   - in that the counterweight guide (20) is configured so as, in the region (LG) of the passing zone (BZ), by means of direct interaction between the lift car (1) and the counterweight guide (20) and between the counterweight (2) and the counterweight guide (20), to ensure relative guidance of the counterweight (2) with respect to the lift car (1), wherein the counterweight guide (20) is a mobile counterweight guide (20) with at least one guide rail (21) which is fastened to the lift car (1), and in that corresponding guide means (22) are present on the counterweight (2), said guide means being configured to engage temporarily in the guide rail (21) on the lift car (1) while the lift car (1) moves past the counterweight (2).
2. Lift installation (10) according to Claim 1, characterized in that the counterweight guide (20) is a mobile counterweight guide (20) with at least one guide rail (21) which is fastened to the counterweight (2), and in that corresponding guide means (22) are present on the lift car (1), said guide means being configured to engage temporarily in the guide rail (21) on the counterweight (2) while the lift car (1) moves past the counterweight (2).
3. Lift installation (10) according to Claim 1, characterized in that the counterweight guide (20) is a mobile counterweight guide (20), wherein

   - either the counterweight guide (20) is fastened to the lift car (1) and has a sliding surface (25) which is configured in such a manner that the counterweight (2) slides along said sliding surface (25) while the lift car (1) moves past the counterweight (2),

   - or the counterweight guide (20) is fastened to the counterweight (2) and has a sliding surface (25) which is configured in such a manner that the lift car (1) slides along said sliding surface (25) while the lift car (1) moves past the counterweight (2).
4. Lift installation (10) according to one of Claims 1 to 3, characterized in that the counterweight guide (20) comprises inlet guides (23) and/or outlet guides (24).
5. Lift installation (10) according to Claim 1, characterized in that the counterweight guide (20) is a stationary counterweight guide (20) which extends in the shaft longitudinal direction (y) along the region (LG) and guides both the lift car (1) and the counterweight (2).
6. Lift installation (10) according to Claim 1, characterized in that the counterweight guide (20) is configured to prevent collisions during crossing of the lift car (1) and the counterweight (2) at approximately half the shaft height.
7. Lift installation (10) according to Claim 1, characterized in that inlet guides (23) and/or outlet guides (24) are provided in entry and exit zones of the counterweight guide (20) in order to ensure better insertion of the counterweight (2) into the counterweight guide (20) when the lift car (1) and the counterweight (2) meet in the lift shaft (6).

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