EP3551565B1 - Rail foot holder for fastening a rail of a lift facility - Google Patents

Description

The invention relates to a rail foot holder for fastening a rail of an elevator installation in an elevator shaft and a method for fastening a rail of an elevator installation in an elevator shaft by means of preferably several such rail foot holders

From the EP 0 448 839 A1 a fastening device for guide rails of elevators is known. The known fastening device enables a pretensioning force of a rail clamp to be changed. Such a change or setting of the pretensioning force of the rail clamp is achieved in that a semicircular profile serving as a support chuck for the guide rail can have different thicknesses. Correspondingly, however, it is necessary to determine which semicircular profile is required and must be delivered as a component part of the fastening device before the fastening device is assembled, and thus usually before the elevator system is installed. From the DE3010826 a rail foot holder according to the preamble of claim 1 is known.

When installing an elevator system in an elevator shaft of a building, the elevator rails (rails) can be attached directly or indirectly to a building wall. Such an elevator rail can serve, for example, as a guide rail for an elevator car or a counterweight of the elevator installation. Such elevator rails usually extend over the entire travel path of the elevator, which in many cases can approximately correspond to the height of the building. The elevator rails are so firmly attached in the building that lateral managers can be safely picked up. However, the building height can change over time. There are several possible reasons for this. For example, a building can shrink after its completion as a result of concrete drying out and building settlement. Changes in building height can also be caused by temperature changes and solar radiation.

Changes in the height of the building usually result in uncompensated changes in length relative to the metal elevator rails. This means that the guide rails move in the elevator shaft in relation to the building. For example, if the building shrinks, the guide rails grow in relation to the building. In order to deformations in To avoid rail sections between fastening points, the fastening points for a rail, in particular a guide rail, must be designed in such a way that length compensation is possible. At the same time, however, it must also be ensured that the rail is fastened in such a way that it meets the respective requirements, so that, for example in the case of a guide rail, the managers can be accommodated.

The object of the invention is to provide a rail foot holder, which is used to fasten a rail of an elevator system in an elevator shaft, and a method for securing a rail of an elevator system in an elevator shaft by means of at least one rail foot holder, which have an improved design. In particular, the object of the invention can be to provide such a rail foot holder and such a method which enable improved fastening, in which in particular simplified adjustment and assembly is made possible, with both a relative displacement of the rail along its extension in the assembled state as well as movement or rotation across or around its extent is prevented.

Solutions and proposals for a corresponding embodiment are given below, which concern a rail foot holder and a method that is carried out with at least one rail foot holder and which solves at least parts of the problem. Furthermore, advantageous additional or alternative developments and configurations are given or described.

In one solution, a rail foot holder, which is used to fasten a rail in an elevator shaft, can be designed with a contact body that can be arranged in the elevator shaft and at least one holding device, the contact body providing a contact plane for a rail foot of the rail, with the holding device has a holding head, wherein a first side part of the rail foot can be arranged between the holding head of the holding device and the contact plane for fastening the rail, wherein a holding dimension between the holding head of the holding device and the contact plane to compensate for tolerances of the first side part of the Rail foot changeable, wherein the holding head of the holding device can be rotated in a direction of rotation about an axis of rotation of the holding device in a fastening position to reduce the holding dimension and wherein a side of the holding head of the holding device facing the contact plane in at least a fastening area extending in the direction of rotation around the axis of rotation of the holding device, on which an at least indirect contact between the holding head of the holding device and the first side part of the rail foot is made possible, is designed with a slope opposite to the direction of rotation.

The rail (elevator rail) is not part of the rail foot holder. In particular, the rail foot holder can also be manufactured and sold independently of a rail or other components of an elevator system. The rail foot holder is designed in such a way that an improved arrangement and / or assembly of the rail is made possible with regard to a specific arrangement of the rail. In particular, when assembling the elevator system, in which one or more rails are fastened in the elevator shaft via preferably several rail foot holders, an improved setting can take place with regard to fastening the rail without play, for example. This makes it possible in particular to compensate for manufacturing tolerances of the rail, which can specifically affect a material thickness of a rail foot. For example, the material thickness of the rail foot can vary from rail section to rail section. If such rail sections are then joined together to form the rail, then a slightly different adjustment of the holding dimension may be required in each section. This setting can be carried out in a particularly simple manner by a fitter when the rail is installed in the elevator shaft.

In a further solution, a method for fastening a rail of an elevator system in an elevator shaft by means of at least one rail foot holder according to the invention can be specified, the contact body being arranged in a stationary manner in the elevator shaft, with a first side part of the rail foot between the holding head of the holding device and that through the contact body predetermined contact plane is arranged, and wherein the holding head is rotated to reduce the holding dimension between the holding head of the holding device and the contact plane about the axis of rotation of the holding device.

It goes without saying that the designations first side part and second side part of the rail foot are used here to denote the two side parts of the rail foot, without this being intended to specify which of the two side parts is designated as the first or second side part. Specifically, the rail foot can be modified so that the two side parts of the Rail foot are just referred to in an interchanged manner as the first and second side part. In terms of design, this can correspond to a reflection of the rail foot holder on a suitable construction plane. In principle, however, mirror-symmetrical designs of the rail foot holder are also conceivable in this regard. The same applies to the terms holding device and further holding device or first and second holding device.

A special feature of the proposed embodiment is that the holding head of the holding device can be adjusted to the generally toleranced dimensions of the rail foot without dismantling the holding device, which is referred to in the context of this application as "setting without disassembling". Correspondingly, "fastening without dismantling" is possible in that, in a possible further development, the holding device can be infeed or brought closer to the rail foot, which can be achieved, for example, by a suitable elongated hole. Furthermore, an embodiment can be implemented in an advantageous manner in which both the setting without dismantling and the fastening without dismantling allow the holding head to be locked or fixed in the desired position by a single assembly step, for example tightening a screw is. Possible designs for setting without dismantling and for fastening without dismantling are also explained in further detail below and with reference to the description of the figures.

It is therefore advantageous that the holding head of the holding device can be rotated into the fastening position in the direction of rotation about the axis of rotation of the holding device for an adjustment serving to reduce the holding dimension. Furthermore, it is advantageous that the holding head of the holding device is rotated in the direction of rotation about the axis of rotation of the holding device into the fastening position during the setting, which serves to reduce the holding dimension. It can be adjusted without dismantling.

Furthermore, for fastening the rails or when fastening the rail, fastening without dismantling is possible.

It is also advantageous that the holding head can be rotated about the axis of rotation into a fastening position in a further direction of rotation oriented counter to the direction of rotation in a setting serving to reduce the holding dimension, in particular when setting without dismantling, and that the side of the Holding head in a further fastening area extending in the further direction of rotation around the axis of rotation, where an at least indirect contact between the holding head and the first side part of the rail foot is made possible, is designed with a slope opposite to the further direction of rotation. As a result, the fitter can reduce the holding measure when making adjustments, regardless of whether he is turning the holding head in the direction of rotation or in the other, namely further, direction of rotation for the purpose of adjustment. This also results in ergonomic advantages, since the fitter can choose the most ergonomically favorable direction of rotation for both the right and the left hand. In this regard, the size and configuration of the holding head, in particular on its side facing away from the contact plane, can be designed in such a way that, for example, advantageous gripping with a glove is made possible.

It is advantageous that the holding device can be adjusted relative to the base body in such a way that a distance between the axis of rotation of the holding device and a further holding device, between which the rail foot can be fastened, can be changed. During assembly, before the distance between the axis of rotation of the holding device and the further holding device is reduced, the rail with its rail foot can be positioned between the two holding devices, then the holding device can be adjusted relative to the base body so that the distance between the axis of rotation of the holding device and the further holding device is reduced until the desired fastening position for the axis of rotation is reached, and then the holding head is rotated about the axis of rotation until the appropriate holding dimension is set. This enables the rail to be fastened by means of the holding device without dismantling. In a possible embodiment, it is advantageous that the contact body has an elongated hole for this purpose, in which a bolt of the holding device is guided. This configuration then enables the holding device to be adjusted relative to the contact body.

It is advantageous that the holding head of the holding device has an end face which faces the contact body and can be acted upon against the contact body by means of a fastening means of the holding device in order to fix the holding head relative to the contact body. Such a fastening means can, for example, have a screw bolt which is fastened to the contact body, for example by means of a nut and a washer. This results in the possibility that the screw bolt also serves as a bolt which is guided, for example, in an elongated hole in the contact body, in order to adjust the holding device allow relative to the plant body.

It is also advantageous here that the face of the holding head of the holding device facing the contact body is designed as a structured face. The structured end face can support the function of a fixation, since the influence of dirt, liquids, such as oil, and the like is reduced. For example, there is the possibility of providing grooves in the end face of the holding head facing the contact body. It is particularly advantageous here if such grooves are designed as grooves extending radially to the axis of rotation of the holding device in the end face of the holding head facing the contact body. A combination of such measures is also conceivable here. For example, grooves, in particular grooves running radially to the axis of rotation, can also be combined with other structural elements on the end face in order to form a structured end face. The structured end face is preferably designed in such a way that the end face of the holding head claws with the contact body when it is fixed or screwed tight. This prevents unintentional twisting of the holding head in the assembled state. These grooves, which run radially to the axis of rotation of the holding device and can serve to design the structured end face, meet this criterion.

Furthermore, it is advantageous that a further holding device is provided and that a further holding device or an axis of rotation of the further holding device is arranged in a stationary manner on the contact body. In this embodiment, it may in particular be possible that only the holding device is adjustable relative to the contact body in such a way that the axis of rotation of the holding device can be adjusted relative to the contact body. If the further holding device needs to be positioned relative to the rail, this can be achieved in an advantageous manner by adjusting the contact body relative to a fastening body. During assembly, the further holding device is then first brought into the desired position in the elevator shaft. The contact body can then be fixed in its position, which is made possible, for example, by a corresponding attachment to the attachment body. The holding device can then be adjusted relative to the further holding device. In the last step, a holding head of the holding device and a holding head of the further holding device can then be adjusted.

Thus, it is also advantageous if a further holding device is provided which has a holding head, wherein a second side part of the rail foot can be arranged between the holding head of the further holding device and the system level for fastening the rail, with a further holding dimension between the holding head of the further holding device and the contact level to compensate for tolerances of the second side part when fastening the rail of the rail foot can be changed, the holding head of the further holding device being rotatable in a direction of rotation about an axis of rotation of the further holding device into a fastening position when the further holding device is adjusted to reduce the further holding device, and one side of the holding head of the further holding device facing the contact plane in at least one in the direction of rotation about the axis of rotation of the holding device extending fastening area, at which an at least indirect contact between the holding head of the further holding device and the second side part of the rail foot is enabled i st, is designed with a slope opposite to the direction of rotation. This configuration enables, for example, assembly steps according to which the rail foot is fastened on both sides at least essentially without play. It is also conceivable here that the holding dimension and the further holding dimension differ if this is necessary in the respective application, in particular due to different tolerances on the rail foot.

It is advantageous that the holding head of the holding device or the holding head of the further holding device is designed on the side facing the contact plane in the at least one fastening area with a continuous slope in the direction of rotation or in the further direction of rotation. The gradient does not experience any sudden change. This configuration can thus relate to the holding head of the holding device and / or the holding head of the further holding device. Furthermore, in relation to the holding head of the holding device or the holding head of the further holding device, this can refer to only one or only the single fastening area or, if two fastening areas are provided, to both fastening areas. A preferred embodiment of the incline, which does not change abruptly, consists in a continuously running incline. Different configurations are conceivable here.

For example, the slope can be designed in such a way that the holding dimension changes linearly with the angle of rotation when rotating in the direction of rotation or in the further direction of rotation.

Furthermore, it is advantageous that a fastening body is provided which can be fastened in a stationary manner in the elevator shaft, and that the contact body can be connected to the fastening body. It is also advantageous here if the contact body can be connected to the fastening body in several possible connection positions. Discrete and / or continuous adjustment options can be implemented here. After the fastening body has been fixed in place, this then enables the position of the contact body to be advantageously adapted to the desired position specified for fastening the rail.

It is also advantageous that a cylinder jacket-shaped sliding surface is provided on the holding head or the further holding head, on which contact between the first side part or the second side part of the rail foot and the holding head is enabled for guiding the rail foot when the rail is attached. If, for example, there are relative changes in length between the rail and the building, a longitudinal compensation along the extent of the rail is required, which is held by the rail foot holder. At the same time, however, the rail should also remain movable relative to the rail holder along its extent. In particular, it makes sense here to avoid the build-up of mechanical stresses along the extension of a rail. In addition to an essentially play-free, but practically powerless fastening implemented via the holding dimension or the further holding dimension, this is made possible by reducing the holding friction between the holding head and the rail.

It is therefore also advantageous that the equal surface is formed on a reduced-friction coating of the holding head or of the further holding head, which, among other things, reduces the relevant static friction. In a modified embodiment, it is correspondingly advantageous that an at least approximately hollow-cylindrical sliding ring is mounted on the sliding surface of the holding head or of the further holding head. In this case, contact between the first side part or the second side part of the rail foot and the sliding ring can then be made possible for guiding the rail foot.

Thus, by means of the fastening areas inclined about the axis of rotation, the respective holding dimension can be set precisely according to a local rail foot thickness. As a result, rail tolerances, in particular tolerances on the side parts of the rail foot, can be absorbed. There is also a lateral delivery, for example, by means of a lateral elongated hole in the contact body. By means of this lateral infeed, if necessary in combination with a positionability of the contact body in the elevator shaft, precise lateral guidance for the rail can be set. A lubricant, a sliding layer and / or (in the lateral direction) a sliding ring can be provided on any contact or contact surfaces. In this way, in particular, a length compensation that occurs with a delay and indefinitely in time and then takes place in a jerk, so to speak, is avoided.

• Fig. 1 zeigt einen Schienenfußhalter und ein kurzes Stück einer Schiene in einer räumlichen Darstellung entsprechend einem Ausführungsbeispiel der Erfindung.
• Fig. 2 zeigt einen Haltekopf für eine Halteeinrichtung des in Fig. 1 gezeigten Schienenfußhalters in einer räumlichen Darstellung.
• Fig. 3 zeigt den in Fig. 2 dargestellten Haltekopf aus der mit III bezeichneten Blickrichtung.
• Fig. 4 zeigt eine auszugsweise, schematische Darstellung eines Anlagekörpers mit einem Langloch und eines Bolzens einer Halteeinrichtung entsprechend einer möglichen Ausgestaltung des in Fig. 1 gezeigten Schienenfußhalters.
• Fig. 5 zeigt in mehreren Schaubildern einen möglichen Ablauf einer Montage, bei der der in Fig. 1 dargestellte Schienenfußhalter zum Befestigen der Schiene in einem Aufzugsschacht zum Einsatz kommen kann, zur Erläuterung eines Verfahrens entsprechend einem Ausführungsbeispiel der Erfindung und zur Erläuterung der Funktionsweise des Schienenfußhalters.
• Fig. 6 zeigt den in Fig. 2 dargestellten Haltekopf entsprechend einem weiteren Ausführungsbeispiel der Erfindung.
• Fig. 7 zeigt eine Aufzugsanlage, bei der zumindest eine Schiene mit dem in Fig. 1 dargestellten Schienenfußhalter befestigt ist.
• Fig. 8 zeigt den in Fig. 1 gezeigten Schienenfußhalter und das kurze Stück der Schiene in einer auszugsweisen Darstellung aus der mit VIII bezeichneten Blickrichtung.

Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings.

• Fig. 1 shows a rail foot holder and a short piece of a rail in a three-dimensional representation according to an embodiment of the invention.
• Fig. 2 shows a holding head for a holding device of the in Fig. 1 Rail foot holder shown in a three-dimensional representation.
• Fig. 3 shows the in Fig. 2 shown holding head from the viewing direction marked III.
• Fig. 4 shows a partial, schematic representation of a contact body with an elongated hole and a bolt of a holding device according to a possible embodiment of the Fig. 1 shown rail foot holder.
• Fig. 5 shows in several diagrams a possible assembly sequence in which the in Fig. 1 The rail foot holder shown can be used for fastening the rail in an elevator shaft, to explain a method according to an exemplary embodiment of the invention and to explain the mode of operation of the rail foot holder.
• Fig. 6 shows the in Fig. 2 shown holding head according to a further embodiment of the invention.
• Fig. 7 shows an elevator system in which at least one rail is connected to the in Fig. 1 is attached rail foot holder.
• Fig. 8 shows the in Fig. 1 Rail foot holder shown and the short piece of the rail in an excerpt from the viewing direction indicated by VIII.

Fig. 1 shows a rail foot holder 2 and a rail 3 for an elevator installation 1 ( Fig. 7 ) in a spatial representation according to an embodiment. To simplify the illustration, only a short piece of the rail 3 is shown here. The rail foot holder 2 has a fastening body 4 which, via fastening means 5, 6, in particular fastening dowels 5, 6, is attached to a wall 7 of an elevator shaft 8 with a wall 9 ( Fig. 7 ) is connectable.

Furthermore, the rail foot holder 2 has a contact body 10 which can be connected to the fastening body 4 in a suitable manner. In this exemplary embodiment, connecting means 11, 12 are provided which enable the contact body 10 and the fastening body 4 to be connected to one another. Such connecting means 11, 12 can be implemented, for example, by screws, nuts and washers. In this embodiment several connection positions are possible. This means that when the fastening body 4 is already fastened to the wall 9, there is still freedom for the positioning of the contact body 10 in the elevator shaft 8.

In this exemplary embodiment, elongated holes 13, 14 in the fastening body 4 and elongated holes 17, 18 in the contact body 10 are implemented by way of example in order to implement several connection positions. Furthermore, in this exemplary embodiment, several bores 15, 16 are also implemented in the contact body 10, only the bores 15, 16 being marked to simplify the illustration. In a modified embodiment, bores can additionally or alternatively be provided on the fastening body 4. Furthermore, only elongated holes 17, 18 or only bores 15, 15 can be provided on the contact body 10. Furthermore, more than two elongated holes 13, 14, 17, 18 and / or a different number of bores 15, 16 can optionally be provided on the fastening body 4 and / or the contact body 10. As a result, a connection of the fastening body 4 to the contact body 10 in several connection positions can be made possible in relation to the respective application. Here, a discrete setting and / or a variable setting can be made possible. This results in advantages with regard to assembly, since the fitter can then easily align the contact body 10 with regard to its desired position.

The contact body 10 mounted in this way in the elevator shaft 8 defines a contact plane 17 which, in this exemplary embodiment, is determined by an end face 17 ′ on the contact body 10. In a modified embodiment, however, an additional layer, in particular a support, can also be provided on the end face 17 ', on which the actual contact plane 17 is then located.

The rail 3 has a rail foot 20 with side parts 21, 22. In this embodiment, the side part 21 is referred to as the first side part, while the side part 22 is then referred to as the second side part.

The rail foot 20 also has an underside 23 which faces the end face 17 ′ of the contact body 10 and rests at least partially on the contact plane 17. The rail foot 20 has an upper side 27 of the rail foot 20 which faces away from its underside 23. Furthermore, the rail 3 has a rail head 24 on which tracks 25, 26 are formed. The tracks 25, 26 can serve, for example, as braking and / or guide tracks 25, 26, depending on the function of the rail 3.

The rail foot holder 2 has holding devices 31, 32. Here, the holding device 31 assigned to the first side part 21 of the rail foot 20 is referred to as the first holding device, while the holding device 32 assigned to the second side part 22 is referred to as the second holding device 32. The first holding device 31 is used in the assembled state to hold the first side part 21 against the contact plane 17. The second holding device 32 in the assembled state is used to hold the second side part 22 against the contact plane 17. The first holding device 31 has a holding head 33. The second holding device 32 has a holding head 34. An axis of rotation 35 is defined for the first holding device 31. An axis of rotation 36 is defined for the second holding device 32. The holding head 33 can in principle be rotated about the axis of rotation 35. The holding head 33 can be fixed in a rotational position resulting from the assembly via a fastening means 37 of the first holding device 31. Accordingly, the holding head 34 of the second holding device 32 can in principle be rotated and can be fixed in a rotational position resulting from the assembly via a fastening means 38 of the second holding device 32.

To describe the exemplary embodiment of the rail foot holder 2, reference is made to a first direction 41, a second direction 42 and a third direction 43, each perpendicular are oriented to each other, referred to. In this exemplary embodiment, the first direction 41 is oriented perpendicular to the contact plane 17. The second direction 42 and the third direction 43 are oriented parallel to the contact plane 17. In this case, the second direction 42 is oriented perpendicular to the tracks 25, 26 of the rail head 24, while the direction 43 is oriented along an extension 44 of the rail 3 through the elevator shaft 8 when the rail 3 is mounted in the elevator shaft 8 over the rail foot holder 2 is attached in the elevator shaft.

In this exemplary embodiment, the axis of rotation 36 of the second holding device 32 is stationary with respect to the contact body 10. The axis of rotation 35 of the first holding device 31 is (only) displaceable in the second direction 42 when the fastening means 37 is released. One possible implementation is based on the Fig. 4 described.

For assembly, the holding head 33 or the axis of rotation 35 of the first holding device 31 is initially in an initial position compared to the illustrated assembly position, in which the holding head 33 is located opposite to the second direction 42 at a greater distance from the holding head 34 of the second holding device 32. The distance between the holding heads 33, 34 is so large in the starting position that the rail foot 20 of the rail 3 can be inserted in the first direction 41 between the holding heads 33, 34. The rail 3 can then be moved with its rail foot 20 in the second direction 42 and hooked into the holding head 34 of the second holding device 32. In a modified embodiment, the holding head 34 or the axis of rotation 36 of the second holding device 32 can also be adjusted against the second holding device 42, so that the rail foot 20 only needs to be placed against the contact plane 17 in the first direction 41.

The holding head 33 of the first holding device 31 is then adjusted in the second direction 42. In the position shown, the first side part 21 is then suspended between the holding head 33 of the first holding device 31 and the contact plane 17. The second side part 22 of the rail foot 20 is suspended between the holding head of the second holding device 32 and the contact plane 17.

The further assembly process is also based on the Fig. 5 described in more detail.

After assembly, the rail 3 is free of play in and against the first direction 41, but is kept as powerless as possible. Furthermore, the rail 3 is in and against the second Direction 42 free of play, but kept as powerless as possible. With regard to the third direction 43, however, there is a degree of freedom. As a result, the rail 3 can be moved along its extension 44 in order, for example, to compensate for the relative length of the wall 9 ( Fig. 7 ) to enable.

Fig. 2 shows the holding head 33 for the in Fig. 1 shown holding device 31 of the rail foot holder 2 in a three-dimensional representation. The holding head 34 can be configured in accordance with the holding head 33. The holding head 33 has a hollow cylindrical spacer part 47 and a plate-shaped holding part 48. Fastening areas 49, 50 are configured on the holding part 48 of the holding head 33. The fastening areas 49, 50 are formed here on one side 51 of the holding part 48 of the holding head 33 which, in the assembled state, faces the contact plane 17. In a modified embodiment, only one fastening area 49 can be provided.

The fastening area 49 extends in a direction of rotation 52 about the axis of rotation 35. The further fastening area 50 extends in a further direction of rotation 53 about the axis of rotation 35. The direction of rotation 52 and the further direction of rotation 53 are oriented relative to one another.

In an area 54 where the two fastening areas 49, 50 meet, the plate-shaped holding part 48 has a minimum thickness d. In an area 55, which lies opposite the area 54 with respect to the axis of rotation 35 and in which the fastening areas 49, 50 also meet, the plate-shaped holding part 48 has its maximum thickness D. The maximum thickness D results from the minimum thickness d plus one Slope s. The slope s results from a rotation in the direction of rotation 52 or the further direction of rotation 53 of 180 °.

In this way, starting from the region 54, the holding head 33 is designed with a slope s opposite to the direction of rotation 52 or opposite to the further direction of rotation 53.

During assembly, the holding head 33 is initially oriented at least approximately with respect to its axis of rotation 35 such that the first side part 21 is located between the area 54 of the side 51 of the holding head 33 and the contact plane 17. The fitter can then rotate the holding head 33 about its axis of rotation 35, which reduces a holding dimension H, as can also be seen from FIG Fig. 5 is described. In this embodiment, the Fitter set to no direction of rotation. That is to say, it can optionally achieve a fastening in the direction of rotation 52 or in the further direction of rotation 53.

The holding head 33 has an end face 56 facing the contact plane 17 or the end face 17 ′ of the contact body 10. In the assembled state, the end face 56 of the holding head 33 provided on the spacer 47 is urged against the contact body 10 in such a way that the holding head 33 is fixed against rotation about the axis of rotation 35 and, in this exemplary embodiment, against displacement along the second direction 42. The fastening force is here via the fastening means 37, 38 ( Fig. 1 ) applied.

To support the fixation, the end face 56 is designed as a structured end face 56. In this exemplary embodiment, grooves 57 are formed on the end face 56 of the holding head 33 in this regard, of which only the groove 57 is identified to simplify the illustration. In this exemplary embodiment, the groove 57 runs radially with respect to the axis of rotation 35 of the holding device 31. The end face 56 is otherwise designed such that the axis of rotation 35 is oriented perpendicular to the end face 56. Other structural elements, in particular depressions, can optionally also be configured in the end face 56.

The grooves 57 are a possible design variant for depressions 57. Structuring the end face 56 has the advantage that dirt, liquids, such as oil, and the like have a reduced influence on the fixing of the holding head 33 on the contact body 10. In addition, the depressions 57 have the effect that the end face 56 digs into the contact plane 17 when the fastening means 37, 38 are tightened. The holding head 33 is thereby secured against rotation.

Fig. 3 shows the in Fig. 2 shown holding head 33 from the viewing direction marked III. The plate-shaped holding part 48 has an end face 58 facing away from the contact plane 17 or the end face 17 ′ of the contact body 10. A receptacle 59 for a head 60 of the fastening means 37 extends from the end face 58. Here, the receptacle 59 is not designed to be rotationally symmetrical with respect to the axis of rotation 35. The head 60, which is likewise not rotationally symmetrical, fits into the receptacle 59 in such a way that, in the assembled state, the holding head 33 and the fastening means 37 are rotationally fixed relative to one another. The same applies to a head 61 of the fastening means 38 and the holding head 34. A depth of the receptacle 59 is less than a corresponding height of the head 61, 60 of the fastening means 37. During the assembly of the rail foot holder 2, the holding head 33, 34 can be adjusted and / or held using a suitable wrench and the holding head 33, 34 can be adjusted and / or held using a suitable tool 68 ( Fig. 5 ) can then a mother 69 ( Fig. 8 ) of the holding device 38 are tightened.

In addition, the holding head 33 has an axial through-hole 62 through which a bolt (bolt section) 63 ( Fig. 4 ) of the fastening means 37 extends.

Fig. 4 shows an excerpt, schematic representation of the contact body 10 and the bolt 63 of the first holding device 31 in an excerpt, sectional representation corresponding to a possible embodiment of the in FIG Fig. 1 The rail foot holder 2 shown. The bolt 63 or bolt section 63 is guided in the second direction 42 in an elongated hole 64 of the contact body 10 so as to be movable. A broken line 65 illustrates a possible target position for a stop of the bolt 63 on the first side part 21 of the rail foot 20 in the assembled state. Since the line 65 shown interrupted intersects through the elongated hole 64, a certain tolerance compensation with regard to the design of the rail foot 20 is made possible.

Fig. 5 shows in several diagrams a possible assembly sequence in which the in Fig. 1 The rail foot holder 2 shown can be used to fasten the rail 3 in an elevator shaft, to explain a method according to an exemplary embodiment of the invention and to explain the mode of operation of the rail foot holder 2. The individual diagrams here show steps S1, S2, S3, S4, which occur during such an assembly can be carried out.

In step S1, the holding device 31 is first adjusted to the first side part 21 of the rail foot 20. This is also the one in the Fig. 4 line 65 shown in broken lines is illustrated in its position, the relevant stop 66 now being implemented on the first side part 21 by a side 66 ′ of the first side part 21.

When the holding device 31 strikes the stop 66 with its hollow cylindrical spacer part 47, then between the area 54 on the side 51 of the Holding part 48 and the contact plane 17 or the end face 17 'of the contact body 10 initially the maximum possible holding dimension H as the initial holding dimension H for the assembly. The holding dimension H between the area 54 and the contact plane 17 is preferably specified in such a way that a more or less large amount of play remains for the rail foot 20 with regard to all possible, production-related tolerances of the rail foot 20. This means that the desired backlash-free, but powerless fastening is only achieved in step S2.

In step S2, the mounting head 33 is rotated by the fitter in the first direction of rotation 52 or in the further direction of rotation 53. This is graphically illustrated by a hand 67 of the fitter. During this assembly process, the holding dimension H. is reduced. The rotation in the direction of rotation 52 or the further direction of rotation 53 takes place until a backlash-free, but force-free fastening is achieved, as shown in step S3. This results in a holding dimension H that allows play-free fastening of the first side part 21 of the rail foot 20 between the fastening area 50 chosen here as an example and the contact plane 17 or the end face 17 'of the contact body 10. In this embodiment, this corresponds to a rotation of the holding head 33 in FIG Direction of rotation 52. As a result, the area 55 moves closer to the stop 66 or closer to the line 65 shown in broken lines. Thus, part of the available slope s has been used to reduce the holding dimension H to the desired value.

In step S4, the holding head 33 is then fixed relative to the contact body 10. Here, the head 60 of the fastening means 37 is fixed by the fitter with a suitable tool 68 or with the hand 67. With the tool 68 or an additional tool corresponding to the tool 68, a nut 69 ( Fig. 8 ) of the holding device 38 are tightened.

Thus, with the rail foot holder 2 according to the exemplary embodiment, an adjustment, in particular an adjustment of the holding dimension H, with respect to the rail foot 20 is possible without dismantling. Correspondingly, the rail foot 20 can be fastened in the elevator shaft 8 by means of the rail foot holder 2 without dismantling. In this case, the rail foot holder 2 can already be correspondingly preassembled upon delivery, so that in particular the holding devices 31, 32 are already in the preassembled state on the contact body 10. It is then not necessary to dismantle the holding devices 31, 32 for setting and / or fastening. Another holding dimension H ' can be adjusted in a corresponding manner on the holding head 34 of the second holding device 32. To simplify the illustration, the further holding dimension H 'in relation to the second side part 22 of the rail foot 20 is shown in FIG Fig. 1 illustrated. Of course, this does not exclude the possibility that the rail foot holder 2 can only be assembled during assembly, that is, after delivery to the assembly site.

After step S3 and the fastening in step S4, there are contacts 75, 76 between the rail foot 20 and the holding head 33 of the first holding device 31. The contact 75 is here between the first side part 21 in the area of its stop 66 or its side 66 ' and the hollow cylinder-shaped spacer part 47. The contact 76 results between the fastening area 50 or the fastening area 49 and an upper side 27 of the rail foot 20 which faces away from its lower side 23. A sliding surface 77 is preferably provided on the hollow cylindrical spacer part 47 in order to avoid static friction on the contact 75 when the rail foot 20 is displaced relative to the building, in particular the wall 9. A suitable lubricant can be attached to the sliding surface 77. The same applies to the contact 76. This means that the fastening areas 49, 50 are preferably made as smooth as possible.

In a modified embodiment, it is also possible that the sliding surface 77 and / or the fastening areas 49, 50 are formed on or with a friction-reducing coating.

Fig. 6 shows the in Fig. 2 shown holding head 33 according to a further embodiment. In this exemplary embodiment, a sliding ring 80 is mounted on the hollow cylindrical spacer part 47 of the holding head 33. Contact 75 ( Fig. 5 ) then comes about between an outer side 81 of the sliding ring 80 and the side 66 'of the first side part 21 of the rail foot 20. Here, the sliding ring 80 can rotate about the axis of rotation 35 relative to the holding head 33. The bearing 82 of the sliding ring 80, designed here as a sliding bearing 82 on the hollow cylindrical spacer 47, can be lubricated by a suitable lubricant.

Fig. 7 shows the elevator installation 1, in which the rail 3 with the in Fig. 1 shown rail foot holder 2 and a further rail foot holder 2 'in the elevator shaft 8 is attached, in an excerpt, schematic representation. The elevator installation 1 here has an elevator cage 90 which is suspended from a suspension element 91. Furthermore, a guide roller 92 is shown by way of example, by means of which the elevator car 90 is guided on the rail 3. The guide roller 92 interacts with the rail head 24 of the rail 3. Managers act essentially in or against the second direction 42. In this regard, the rail 3 is reliably fixed via the holding heads 33, 34. Furthermore, the rail 3 is also held reliably on the wall 9 or the wall 7 of the elevator shaft 8.

If the building changes in its dimensions due to a building settlement, temperature-related changes in length or the like, then there may be relative changes in length between the wall 9 and the rail 3. Here, length compensation is made possible, since the degree of freedom of the rail 3 along its extension 44, that is to say in and against the third direction 43, is essentially not restricted by the rail foot holder 2, 2 ′.

Fig. 8 shows the in Fig. 1 shown rail foot holder 2 and the rail 3 in an excerpt from the viewing direction designated VIII. The nut 70 for the bolt 71, in particular screw bolt 71, of the second holding device 32 is shown here. The screw bolt 71 here has the head 61. The nut 70 is in step S4 ( Fig. 5 ) tightened while the head 61 and thus the holding head 34 is held in its position.

Another nut 69, which is designed like the nut 70, is used for the bolt 63, in particular screw bolt 63, only one nut 69, 70 being shown by way of example to simplify the illustration. Further elements can be used here, in particular a washer 72.

The invention is not restricted to the exemplary embodiment described and the modifications described.

Claims (14)

1. A rail foot holder (2), which serves the purpose of fastening a rail (3) of an elevator system (1) in an elevator shaft (8), with a contact body (10), which can be arranged in the elevator shaft (8), and at least one holding device (31), wherein a contact plane (17), for a rail foot (20) of the rail (3), is defined by the contact body (10), wherein the holding device (31) has a holding head (33), wherein for purposes of fastening the rail (3), a first side part (21) of the rail foot (20) can be arranged between the holding head (33) of the holding device (31) and the contact plane (17), and wherein in the course of fastening the rail (3), a holding dimension (H) between the holding head (33) of the holding device (31) and the contact plane (17) can be altered to compensate for tolerances on the first side part (21) of the rail foot (20),
   wherein for purposes of reducing the holding dimension (H), the holding head (33) of the holding device (31) can be rotated in a direction of rotation (52) around an axis of rotation (35) of the holding device (31) into a fastening position, characterised in that a side (51) of the holding head (33) of the holding device (31), facing towards the contact plane (17), in at least one fastening region (49) extending in the direction of rotation (52) around the axis of rotation (35) of the holding device (31), in which an at least indirect contact (76) is enabled between the holding head (33) of the holding device (31) and the first side part (21) of the rail foot (20), is configured with a sloping rise (s) counter to the direction of rotation (52).
2. The rail foot holder according to Claim 1,
   characterised in that
   the holding head (33), in an adjustment serving to reduce the holding dimension (H), can be rotated around the axis of rotation (35), in another direction of rotation (53) that is oriented counter to the direction of rotation (52), into a fastening position, and in that the side (51) of the holding head (33), facing towards the contact plane (17), in another fastening region (50) extending around the axis of rotation (35) in the other direction of rotation (53), in which an at least indirect contact (76) is enabled between the holding head (33) and the first side part (21) of the rail foot (20), is configured with a sloping rise (s) counter to the other direction of rotation (53).
3. The rail foot holder according to Claim 1 or 2,
   characterised in that
   the holding device (31) can be adjusted relative to the contact body (10), such that a distance between the axis of rotation (35) of the holding device (31) and another holding device (32), between which the rail foot (20) can be fastened, can be altered.
4. The rail foot holder according to Claim 3,
   characterised in that
   the contact body (10) has an elongated hole (64) in which a bolt (63) of the holding device (31) is guided.
5. The rail foot holder according to one of the Claims 1 to 4,
   characterised in that
   the holding head (33) of the holding device (31) has an end face (56), which faces towards the contact body (10), and which, for purposes of fixing the holding head (33) relative to the contact body (10), can be forced against the contact body (10) by means of a fastening means (37) of the holding device (31).
6. The rail foot holder according to Claim 5,
   characterised in that
   the end face (56) of the holding head (33) of the holding device (31), facing towards the contact body (10), is configured as a structured end face (56), and/or in that the end face (56) of the holding head (33) of the holding device (31), facing towards the contact body (10), has grooves running radially with respect to the axis of rotation (35) of the holding device (31).
7. The rail foot holder according to one of the Claims 3 to 6,
   characterised in that
   the other holding device (31), that is to say, an axis of rotation (36) of the other holding device (31), is arranged on the contact body (10).
8. Rail foot holder according to one of the Claims 3 to 7,
   characterised in that
   the other holding device (32) is provided, which has a holding head (34), in that for purposes of fastening the rail (3), a second side part (22) of the rail foot (20) can be arranged between the holding head (34) of the other holding device (32) and the contact plane (17), in that in the course of fastening the rail (3), another holding dimension (H'), between the holding head (34) of the other holding device (32) and the contact plane (17), can be altered to compensate for tolerances on the second side part (22) of the rail foot (20), in that the holding head (34) of the other holding device (32), in the course of an adjustment serving to reduce the other holding dimension (H'), can be rotated in a direction of rotation around an axis of rotation (36) of the other holding device (32) into a fastening position, and in that a side of the holding head (34) of the other holding device (32), facing towards the contact plane (17), in at least one fastening region extending in the direction of rotation around the axis of rotation (36) of the other holding device (32), in which an at least indirect contact is enabled between the holding head (34) of the other holding device (32) and the second side part (22) of the rail foot (20), is configured with a sloping rise (s) counter to the direction of rotation.
9. The rail foot holder according to one of the Claims 1 to 8,
   characterised in that
   the holding head (33), or the other holding head (34), on the side (51) facing towards the contact plane (17), in the at least one fastening region (49, 50) is configured with a sloping rise (s), which extends continuously counter to the direction of rotation (52), or counter to the other direction of rotation (53).
10. The rail foot holder according to one of the Claims 1 to 9,
    characterised in that
    a fastening body (4) is provided, which can be fastened in the elevator shaft (8), and in that the contact body (10) can be connected to the fastening body (4) in a plurality of possible connecting positions.
11. The rail foot holder according to one of the Claims 1 to 10,
    characterised in that
    at least one sliding surface (77) is provided on the holding head (33), or the other holding head (34).
12. The rail foot holder according to Claim 11,
    characterised in that
    when the rail (3) is fastened, contact is enabled between the first side part (21), or the second side part (22), of the rail foot (20) and the holding head (33, 34) on the sliding surface (77), for purposes of guiding the rail foot (20), and/or in that the sliding surface (77) is formed on a reduced-friction coating of the holding head (33), or the other holding head (34), or in that a sliding ring (80) is mounted on the holding head (33), or the other holding head (34).
13. A method for fastening a rail (3) of an elevator system (1) in an elevator shaft (8), by means of at least one rail foot holder (2) according to one of the Claims 1 to 12, wherein the contact body (10) is arranged in the elevator shaft (8), wherein a first side part (21) of the rail foot (20) is arranged between the holding head (33) of the holding device (31) and the contact plane (17) defined by the contact body (10), and wherein the holding head (33) is rotated around the axis of rotation (35) of the holding device (31), for purposes of reducing the holding dimension (H) between the holding head (33) of the holding device (31) and the contact plane (17).
14. The method according to Claim 13,
    characterised in that,
    for purposes of reducing the holding dimension (H) between the holding head (33) of the holding device (31) and the contact plane (17), the holding head (33) of the holding device (31) is rotated around the axis of rotation (35) of the holding device (31), until the first side part (21) of the rail foot (20) is held at least essentially free of play, but with a virtually disappearing holding force between the holding head (33) of the holding device (31) and the contact plane (17).

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