Fastening system, rail system, and mounting method for mounting a console of a rail system of an elevator installation on a wall

Abstract

The present invention relates in particular to a fastening system (200) having two fastening elements (201) for mounting a bracket (100) of a rail system (102) of an elevator installation, the fastening elements (201) having a clamping plate (202) with a through hole (203) and a receiving sleeve (204) for receiving an anchor bolt (206), the receiving sleeve (204) having a through opening (208) for the anchor bolt (206), and an angularly movable ball joint (212) formed between the clamping plate (202) and the receiving sleeve (204).

Description

[Technical Field]

[0001] The present invention relates to a fastening system with two fastening elements for mounting a bracket of a rail system of an elevator installation on a wall, to a rail system for an elevator installation, and to a method for mounting a bracket of a rail system of an elevator installation on a wall. [Background technology]

[0002] A bracket is part of the substructure for the rail system of an elevator installation. The bracket is sometimes called a console. Multiple brackets can be arranged along the extension direction of the rail system. The brackets are fastened to a wall, for example, an elevator shaft. During assembly, the brackets are aligned in multiple axes so that the rail system can be constructed as straight as possible.

[0003] French patent no. 2996216 shows a fastener for a wall-mounted elevator guide.

[0004] The alignment can be achieved, for example, by relative movement of elements that are threadedly mated to one another. The movement can be enabled by means of at least one elongated hole aligned transversely to the axis to be aligned in at least one of the elements. The relative position of the aligned elements can be fixed, for example, using a dowel pin inserted through both elements. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] French Patent Invention No. 2996216 Summary of the Invention [Problem to be solved by the invention]

[0006] Among other things, there may be a need for improved fastening systems, improved rail systems, and improved methods for mounting brackets of elevator installation rail systems on walls. [Means for solving the problem]

[0007] Such a need can be met with a fastening system having two fastening elements for mounting a bracket of a rail system of an elevator installation on a wall, a rail system for an elevator installation and a method for mounting a bracket of a rail system of an elevator installation on a wall according to the independent claims. Advantageous embodiments are defined in the dependent claims.

[0008] According to a first aspect of the present invention, a fastening system for a bracket of a rail system of an elevator installation is proposed, the fastening system comprising two fastening elements, an anchor bolt and at least two nuts, each fastening element for attaching the bracket of the rail system of the elevator installation has a clamping plate with a through hole and a receiving sleeve for receiving an anchor bolt, the receiving sleeve has a through opening for the anchor bolt, an angularly movable ball joint is formed between the clamping plate and the receiving sleeve, the anchor bolt can be anchored in a wall and has an external thread, the nut can be screwed onto the external thread, the fastening elements can be arranged between the nuts on the anchor bolt, and the bracket can be positioned, aligned and clamped between the fastening elements.

[0009] According to a second aspect of the present invention, a rail system for an elevator installation is proposed, the rail system comprising a bracket which is fastened to a wall using at least one fastening system according to the first aspect of the present invention, the bracket having at least one opening through which an anchor bolt anchored in the wall is guided, the opening being larger than the diameter of the anchor bolt by a positioning tolerance, the edge of the opening being clamped between two fastening elements according to the second aspect of the present invention, the two fastening elements being pressed onto the anchor bolt, the fastening element being clamped between two nuts which are locked onto the anchor bolt.

[0010] According to a third aspect of the present invention, a method is proposed for mounting a bracket of a rail system of an elevator installation on a wall using a fastening system according to the first aspect of the present invention having two fastening elements, each of which has a clamping plate with a through hole and a receiving sleeve for an anchor bolt, the receiving sleeve having a through opening for the anchor bolt, an angularly movable ball joint is arranged between the clamping plate and the receiving sleeve, the anchor bolt is locked in the wall, a first nut is screwed onto the external thread of the anchor bolt, a first fastening element with a receiving sleeve is pressed onto the anchor bolt until the receiving sleeve abuts against the first nut, the anchor bolt is pushed against the opening of the bracket until an edge of the opening abuts against the clamping plate of the first fastening element A second fastening element having a clamping plate is guided through the section and pressed onto the anchor bolt until the clamping plate contacts the edge, a second nut is threaded onto the male thread to clamp the bracket between the fastening elements, the distance between the bracket and the wall to align the bracket is set by adjusting the first and second nuts on the male thread, the vertical and horizontal position of the bracket is set by moving the bracket within a positioning tolerance predetermined by the size of the opening, angular misalignment between the bracket and the anchor bolt is compensated for by rotating the ball joint, and the nut is locked in place after alignment to secure the bracket between the fastening elements.

[0011] Possible features and advantages of embodiments of the present invention can be considered based, inter alia, on the concepts and findings described below, without limiting the invention.

[0012] The elevator installation may be a passenger transport installation that transports passengers substantially vertically. The elevator installation may be located, for example, in an elevator shaft of a building. The elevator installation may also be located outside the building. The elevator installation may have at least one vertically movable car. The car may be moved back and forth between many floors or stories of the building. The elevator shaft may have one landing per connected floor. The car may be guided by a rail system connected to the building.

[0013] The bracket can be a structural element of the rail system. The bracket can be positioned between a rail of the rail system and a building. The bracket can be a load-bearing element of the rail system. The rail system can be connected to a building wall or an elevator shaft using a plurality of brackets. The bracket can be a cross beam of the rail system. The bracket can be made of a metal material. The bracket can be made, for example, of a formed metal sheet. The bracket can have a generally U-shaped profile. Other components of the rail system or elevator installation can be fastened to the bracket.

[0014] Using the fastening system or two fastening elements described herein, a bracket can be connected to an anchor bolt anchored in a wall. The anchor bolt can have an external thread over most of its length. The external thread can be a metric thread. If the anchor bolt's outer diameter is 16 millimeters, the external thread can be, for example, an M16 thread. The nut can have an internal thread that matches the external thread. The anchor bolt can be a heavy-duty anchor fastened into a hole in the wall. The anchor bolt can have at least one expansion element and an expansion cone. The expansion element can slide over the expansion cone and press against the side of the hole. As a result, the anchor bolt can transmit particularly high tensile forces to the wall. The expansion element can be expanded by tightening the nut against the wall. A washer can be placed between the nut and the wall. Alternatively or additionally, the anchor bolt can be glued into the hole.

[0015] The clamping plate may be circular. The clamping plate may have an annular clamping surface. A recess in the form of a through hole for the anchor bolt may be arranged in the center of the clamping surface. The clamping surface may be flat. The receiving sleeve may have a contact surface for a nut that is screwed onto the anchor bolt that serves as a wall anchor. The contact surface may be aligned transversely to the through opening. The through opening may have a diameter slightly larger than the external thread of the anchor bolt. In the neutral position of the ball joint, the clamping surface may be aligned perpendicular to the central axis of the through opening.

[0016] The opening in the bracket can be a large hole. The opening can be, for example, circular. The opening can be many times larger than the diameter of the wall anchor. The opening can be punched out of the bracket. Alternatively, the opening can be cut out of the bracket using laser cutting. When the anchor bolt is centered in the opening, the distance between the edge or rim of the opening and the wall anchor forms a positioning tolerance in the direction of the distance.

[0017] The bracket can be clamped between two clamping plates of two fastening elements held between two nuts threaded onto the anchor bolt. The second nut is initially loosely tightened to clamp the edge surrounding the bracket's through-hole. Once the edge is clamped between the clamping surfaces, the clamping surfaces are pressed against the bracket with a low clamping force, allowing the bracket to be moved between the fastening elements within positioning tolerances.

[0018] A ball-and-socket joint can have two mating surfaces that can move relative to one another in at least two spatial directions. Therefore, the two components forming the ball-and-socket joint can be moved relative to one another in different orientations. The mating surfaces can be complementary to one another. The mating surfaces can be shaped as subregions of a sphere with the same radius. The subregions can be of different sizes. The subregions can also be of the same size. The ball-and-socket joint can be inserted, for example, between a receiving sleeve and a clamping plate. The mating surfaces can also be formed by adjacent components, i.e., the receiving sleeve and the clamping plate themselves.

[0019] For example, angular misalignment can occur because the wall anchor is locked at an angle within the wall. Angular misalignment can also be caused by the shape of the wall.

[0020] Rotating the ball joint allows the fastening element to slide on the bracket. By rotating within the ball joint, moving within the opening, and moving along the anchor bolt, the bracket can be aligned in all spatial directions.

[0021] When locked, at least two nuts on the same thread of the anchor bolt are rotated toward each other in different directions, reducing the distance between them. The fastening element and bracket located between the nuts are pressed against each other, and the resulting frictional connection fixes the position and angular position the bracket reaches. The ball joints are also pressed against each other, thus fixing their current angular position.

[0022] The bracket may have at least one alignment notch. Before locking the nut, the bracket may be aligned using the alignment notch and a plumb line. The alignment notch may be a marking formed by at least one recess and / or at least one protrusion on the bracket. During alignment, the alignment notch may be aligned with, for example, a laser beam from a laser plumb line or a code from a code plumb line so that the rails of the rail system extend vertically and in a straight line.

[0023] The fastening system can include at least one spring washer. One or more spring washers can be disposed on the anchor bolt between the second fastening element and the second nut. The spring washer can be pretensioned by pretightening the second nut to clamp the bracket between the clamping plates. The spring washer can be a washer having a three-dimensional pre-deformation in a relaxed state. For example, the spring washer can be grooved and have a helical shape in a relaxed state. Alternatively, the outer edge of the spring washer can be bent relative to the inner edge of the spring washer. When pretightened, the spring washer is at least minimally crushed by the spring deflection and responds to this deformation due to the spring deflection with a reaction force. The spring washer can simplify moving the bracket between the clamping plates because the clamping force corresponds to the reaction force.

[0024] The concave abutment of the ball joint can be formed in the clamping plate. The convex pressure piece of the ball joint can be formed on the receiving sleeve. Conversely, the concave pressure piece can be formed in the receiving sleeve and the convex abutment can be formed on the clamping plate. Thus, the ball joint can be formed by the clamping plate and the receiving sleeve of a corresponding shape. The fastening element can consist of only two parts. The abutment and pressure piece can each form a subregion of a sphere. The abutment and pressure piece can form subregions of a sphere of different sizes. The sphere can have the same radius. Each subregion can correspond to the surface of a spherical layer.

[0025] The concave abutment portion may be substantially hemispherical. Alternatively or additionally, the convex pressure piece may be substantially hemispherical. A large angle adjustment range may be realized using the hemispherical shape. For example, an angle adjustment range of ±20° may be realized. In particular, an angle adjustment range of ±15° may be realized. In particular, an angle adjustment range of ±10° may be realized.

[0026] The through-hole through the clamping plate can be larger than the through-hole in the receiving sleeve to allow angular movement of the ball joint when the anchor bolt is received in the through-hole. The through-hole can correspond to a recess in the clamping surface. The through-hole can connect the abutment of the ball joint to the clamping surface. The through-hole can have a diameter of, for example, 30 to 40 millimeters. In particular, the through-hole can have a diameter of 35 millimeters. The through-hole can be conical.

[0027] The clamping surface of the clamping plate can be significantly larger than the rear side of the clamping plate opposite the clamping surface. The edges of the clamping plate can be generally sharp. The sides of the clamping plate can be aligned at an angle to the clamping surface. The sides can be frustoconical. Because the sides are inclined, material can be saved and the weight of the fastening element can be reduced as needed.

[0028] The clamping plate can have a diameter of 12 to 15 centimeters. Its diameter can be, in particular, 13 centimeters. Its diameter can be significantly larger than the diameter of the bracket opening. The opening can have a diameter of, for example, 10 centimeters. Due to its large diameter, the clamping plate does not fit through the opening, but rather abuts securely against the edge of the opening at all positions within the positioning tolerance. In extreme positions, the clamping plate can even abut only a subregion of the edge.

[0029] The bracket can have at least one additional opening through which another anchor bolt locked in the wall is guided. The edge of the additional opening can be clamped between two additional fastening elements according to the second aspect of the invention, with the additional fastening element being pressed onto the anchor bolt. The additional fastening element can be clamped between two nuts that lock onto the other anchor bolt. The bracket can be connected to the wall at least two anchor bolts. As a result, the bracket can be prevented from rotating. The ball joint means that the bracket can be aligned in all spatial directions, eliminating the need for additional fastening points.

[0030] It should be noted that some of the possible features and advantages of the present invention have been described herein with reference to different embodiments, and those skilled in the art will recognize that the features of the mounting methods, fastening elements, and brackets can be combined, adapted, or exchanged as needed to arrive at other embodiments of the present invention.

[0031] Embodiments of the present invention are described below with reference to the accompanying drawings, wherein neither the drawings nor the description are intended to be limiting of the present invention. [Brief explanation of the drawings]

[0032] [Figure 1]FIG. 1 is a three-dimensional view of a bracket for a rail system according to one embodiment. [Figure 2] FIG. 1 is a cross-sectional view of a fastening system according to one embodiment. [Figure 3] FIG. 1 illustrates a three-dimensional view of a fastening system during alignment according to one embodiment. [Figure 4] FIG. 10 illustrates an aligned bracket of a rail system according to one embodiment. [Figure 5] FIG. 1 illustrates a cross-sectional view of an aligned fastening system according to one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0033] The drawings are only schematic and are not drawn to scale. The same reference signs refer to the same or equivalent features in the various drawings.

[0034] FIG. 1 shows a three-dimensional view of a bracket 100 for a rail system 102 according to one embodiment. The bracket 100 is shown in an unmounted state. The bracket 100 is a crossbeam of the rail system 102 of an elevator installation. The bracket 100 is made of sheet metal. For example, the bracket 100 is designed as a stamped and bent part. The sheet metal of the bracket is, in this case, for example, 5 millimeters thick. The bracket 100 is generally U- or C-shaped to increase its bending resistance. As a result of its contour, the bracket has a bottom surface and two side surfaces that are bent in the same direction from the bottom surface. The side surfaces have a lower height at both ends than in the middle, i.e., the side surfaces are rounded or arcuate.

[0035] The bracket 100 has two openings 104 in its end regions. The openings 104 are circular here and have a diameter of 100 millimeters. The openings 100 are located on the bottom surface of the bracket 100. The openings 104 are located centrally between the side surfaces.

[0036] One of the sides has a wide face at each end region with a tab pointing away from the bracket, each tab having an elongated slot in which the bracket 100 is aligned transversely to the main direction of extension.

[0037] In one embodiment, each side surface near the end region has an alignment notch 106. The alignment notches 106 in the end regions are each arranged on a common line perpendicular to the main extension direction. The alignment notches 106 are here designed as U-shaped grooves in the edges of the side surfaces. The alignment notches 106 can also be designed as protrusions above the edges of the side surfaces.

[0038] FIG. 2 shows a cross-sectional view of an installed fastening system 200, according to one embodiment. The fastening system 200 includes two fastening elements 201 according to an aspect of the present invention. The fastening elements 201 are disposed on opposite sides of the bottom surface of the bracket 100, substantially corresponding to the illustration in FIG. 1 . Each fastening element 201 includes a clamping plate 202 having a through hole 203 and a receiving sleeve 204 for an anchor bolt 206. Each receiving sleeve 204 includes a through opening 208 for the anchor bolt 206. The through openings 208 have a diameter slightly larger than the external threads 210 of the anchor bolts 206. A ball-and-socket joint 212 is formed between the receiving sleeve 204 and the associated clamping plate 202.

[0039] The anchor bolt 206 is designed here as a heavy-duty anchor and has a clamping device 214 at one end. The end is placed in a hole (not shown here) in a wall (not shown) and locked into the wall using the clamping device 214. The opposite end of the anchor bolt 206 then protrudes from the wall. A first nut 216 is screwed onto the external thread 210, and a first fastening element 201 with a receiving sleeve 204 is pressed onto the anchor bolt 206 until the receiving sleeve 204 abuts against the first nut 216. The anchor bolt 206 is then guided through the opening 104, with an edge 218 of the opening 104 abutting a clamping surface 220 of the clamping plate 202.

[0040] Thus, the fastening system 200 consists of two fastening elements 201, an anchor bolt 206, and at least two nuts 216. The fastening system 200 can be pre-assembled, for example. The components of the fastening system 200 can be placed on the anchor bolt 206 in a loss-proof manner. The anchor bolt can also be locked into a wall using the nut 216 and the fastening element 201 placed on the nut. Then, to assemble the bracket 100, only the second nut 216 and the second fastening element 201 are removed, and the bracket 100 is pressed on.

[0041] The second fastening element 201 with the clamping plate 202 is then pressed onto the anchor bolt 206 until the clamping surface 220 abuts the opposite side of the edge 218 .

[0042] The second fastening element 201 is fixed by a second nut 216. The second nut 216 is only slightly tightened so that the bracket 100 can be moved between the fastening elements 201. Once the position and location or orientation of the bracket are aligned in all spatial directions, the nut 216 is locked and tightened using the required torque. As a result, the fastening element 201 is pressed against the bracket 100, and the position and location or orientation is fixed.

[0043] In one embodiment, the second nut 216 is a slotted nut. Once the nut 216 is locked, the anchor bolt 206 is drilled transversely between the prongs in the crown of the slotted nut, and a split pin 222 is driven through the hole and the crown. The split pin 222 secures the second nut 126 so that it cannot be loosened or lost.

[0044] Figure 3 shows a three-dimensional view of the fastening system 200 during alignment, according to one embodiment. The bracket 100 substantially corresponds to the illustrations in Figures 1 and 2. Here, a laser beam 300 is used to spatially align the bracket 100. The laser beam 300 is emitted vertically upward from a light source 302 at the bottom end of the rail system 102. The laser beam 300 is positioned at the point where the alignment notch 106 of the bracket 100 should be located according to the design. The bracket 100 is then moved and rotated using the fastening element 201 and nut 216 until the laser beam 300 extends through the alignment notch 106.

[0045] Instead of the laser beam 300, a vertical cord may be used, which is secured to the top end of the rail system 102 and hangs down vertically.

[0046] To align the bracket 100, two different laser beams 300 from different light sources 302 can be used for the left and right alignment notches. Alternatively, the upward emitted laser beam 300 can be deflected laterally at the top end of the rail system 102 using a mirror device and directed downward again at the point where the other alignment notch 106 should be located according to the design.

[0047] 4 shows a diagram of an aligned bracket 100, according to one embodiment. The bracket 100 substantially corresponds to the illustration in the previous figure. Here, the anchor bolts 206 were imprecisely positioned, and the imprecision in alignment was compensated for by utilizing the positioning tolerance 400 of the openings 104. The top side of the bracket 100 is aligned horizontally.

[0048] The anchor bolt 206 on the left side of the illustration is positioned too far to the right and too far up. The anchor bolt 206 on the right side of the illustration is positioned too far down. Due to the large positioning tolerance 400 of substantially 50 millimeters in the Y and Z directions, i.e., left / right and up / down, the left anchor bolt 206 can be positioned with an offset up and to the right in the right opening 104, while the right anchor bolt 206 can be positioned with an offset down in the opening 104. The positioning tolerance 400 is used to a large extent here, so that the clamping surface rests only on the edge 218 of the opening 104 in some areas.

[0049] FIG. 5 shows a cross-sectional view of an aligned fastening system 200 according to one embodiment. This illustration substantially corresponds to the illustration in FIG. 2. In contrast, due to the irregularity of the wall 502, which has an angular offset 504 of 10° with respect to the horizontal, a hole 500 is arranged in the wall 502 so that the anchor bolt 206 is oriented perpendicular to the surface of the wall 502. A large washer 506 rests on the surface, onto which another nut 216 is threaded to clamp the tightening device 214 against the side of the hole 500. To compensate for the angular offset 504 of the anchor bolt 206, the ball joint 212 is deflected by 10°. Since the receiving sleeve 204 is guided through the anchor bolt 206, there is a height offset between the two fastening elements 201.

[0050] In one embodiment, a spring washer 508 is arranged between the second nut 216 and the receiving sleeve 204 of the second fastening element 201. The spring washer 508 is designed here as a grooved washer. In the locked state shown here, the spring washer 508 is maximally compressed and therefore lies flat against the receiving sleeve 204 and the nut 216.

[0051] To align the bracket 100, the second nut 216 is simply threaded onto the spring washer 508 with a low alignment torque to achieve a low clamping force of the clamping disk 202 against the edge 218 such that the edge 218 can be moved between the clamping disks 202.

[0052] In one embodiment, the clamping plates 202 each have a recess as the abutment portion 510 of the ball joint 212, which recess forms at least an approximately spherical portion, while the receiving sleeves 204 each have a protrusion as the pressure piece 512, which protrusion forms at least an approximately spherical portion, where the abutment portion 510 and the pressure piece 512 are hemispherical.

[0053] In other words, Figures 1-5 show a fastening element or fastening system formed by fastening elements that allow the console to be secured to a wall. The fastening elements can also be called spherical disks. Two fastening elements can be locked onto anchor bolts, allowing the console's position to be set in six dimensions.

[0054] Alignment and position can be set using a plumb line. For this purpose, the console can be moved spatially using fastening elements to allow alignment. In this way, the tolerances of the elevator shaft can be compensated. Alignment is performed using two anchor bolts, a ball joint, and two large holes in the console. The distance from the wall is set using nuts on the anchor bolts. Translational movement occurs in the large holes. Rotation occurs in the spherical joint.

[0055] As a result, the console can be positioned freely in space, ensuring accurate alignment regardless of the tolerances of the elevator shaft and anchor bolts. Once the console is aligned, the nuts on the ball joints are tightened to press the system together and lock it in place.

[0056] Finally, it should be noted that terms such as "comprising" and "having" do not exclude other elements or steps, and terms such as "a" or "an" do not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps of other of the above embodiments. Reference signs in the claims should not be considered limiting.

Claims

1. A fastening system (200) for a bracket (100) of a rail system (102) of an elevator installation, the fastening system comprising two fastening elements (201), an anchor bolt (206), and at least two nuts (216); Each fastening element (201) for mounting a bracket (100) of a rail system (102) of an elevator installation comprises a clamping plate (202) with a through hole (203) and a receiving sleeve (204) for receiving an anchor bolt (206), the receiving sleeve (204) having a through opening (208) for the anchor bolt (206), an angularly movable ball joint (212) being formed between the clamping plate (202) and the receiving sleeve (204), The anchor bolt (206) can be locked into the wall (502) and has an external thread (210), a nut (216) can be threaded onto the external thread (210), the fastening element (201) can be placed between the nut (216) on the anchor bolt (206), and the bracket (100) can be positioned, aligned, and clamped between the fastening elements (201); one or both clamping surfaces (220) of the clamping plates (202) are substantially larger than the rear side of the same clamping plate (202) opposite the clamping surface; A fastening system (200).

2. A fastening system (200) for a bracket (100) of a rail system (102) of an elevator installation, the fastening system comprising two fastening elements (201), an anchor bolt (206), and at least two nuts (216); Each fastening element (201) for mounting a bracket (100) of a rail system (102) of an elevator installation comprises a clamping plate (202) with a through hole (203) and a receiving sleeve (204) for receiving an anchor bolt (206), the receiving sleeve (204) having a through opening (208) for the anchor bolt (206), an angularly movable ball joint (212) being formed between the clamping plate (202) and the receiving sleeve (204), The anchor bolt (206) can be locked into the wall (502) and has an external thread (210), a nut (216) can be threaded onto the external thread (210), the fastening element (201) can be placed between the nut (216) on the anchor bolt (206), and the bracket (100) can be positioned, aligned, and clamped between the fastening elements (201); The fastening system further comprises a spring washer (508), which can be disposed between one of the nuts (216) on the anchor bolt (206) and one of the fastening elements (201); A fastening system (200).

3. 3. The fastening system (200) of claim 1 or 2, wherein the concave abutment portion (510) of the ball joint (212) is formed in one or both of the clamping plates (202), and the convex pressure piece (512) of the ball joint (212) is formed on one or both of the receiving sleeves (204).

4. 4. The fastening system (200) of claim 3, wherein one or both of the concave abutment portions (510) are approximately hemispherical in at least some areas and / or one or both of the convex pressure pieces (212) are approximately hemispherical in at least some areas.

5. 5. The fastening system (200) of claim 1, wherein one or more through holes (203) through one or both of the clamping plates (202) are larger than the through openings (208) of the associated receiving sleeves (204) to allow angular movement of the ball-and-socket joint when an anchor bolt (206) is received in the through openings (208).

6. The fastening system (200) of any one of claims 2 to 5, wherein one or both clamping faces (220) of the clamping plates (202) are substantially larger than a rear side of the same clamping plate (202) opposite the clamping face.

7. The fastening system (200) of any one of claims 1 to 6, wherein one or both of the clamping plates (202) has a diameter of between 12 centimeters and 15 centimeters.

8. 10. A rail system (102) for an elevator installation, the rail system (102) comprising a bracket (100) fixed to a wall (502) using at least one fastening system (200) according to any one of claims 1 to 7, the bracket (100) having at least one opening (104) through which an anchor bolt (206) anchored in the wall (502) is guided, the opening (104) being larger than the diameter of the anchor bolt (206) by a positioning tolerance (400), an edge (128) of the opening (104) being clamped between at least two fastening elements (201) pressed onto the anchor bolt (206), the fastening element (201) being clamped between two nuts (216) locked onto the anchor bolt (206).

9. The rail system (102) according to claim 8, wherein the bracket (100) has at least one further opening (104) through which a further anchor bolt (206) locked in the wall (502) is guided, and an edge (218) of the further opening (104) is clamped between two further fastening elements (201) according to any one of claims 1 to 7, the further fastening element being pressed onto the further anchor bolt (206), and the further fastening element (201) being clamped between two nuts (216) that are locked onto the further anchor bolt (206).

10. A fastening system (200) for a bracket (100) of a rail system (102) of an elevator installation, the fastening system comprising two fastening elements (201), an anchor bolt (206), and at least two nuts (216); Each fastening element (201) for mounting a bracket (100) of a rail system (102) of an elevator installation comprises a clamping plate (202) with a through hole (203) and a receiving sleeve (204) for receiving an anchor bolt (206), the receiving sleeve (204) having a through opening (208) for the anchor bolt (206), an angularly movable ball joint (212) being formed between the clamping plate (202) and the receiving sleeve (204), A fastening system (200) in which an anchor bolt (206) can be locked into a wall (502) and has an external thread (210), a nut (216) can be threaded onto the external thread (210), fastening elements (201) can be placed between the nuts (216) on the anchor bolt (206), and a bracket (100) can be positioned, aligned, and clamped between the fastening elements (201), A method for mounting a bracket (100) of a rail system (102) of an elevator installation on a wall (502) using the fastening system (200), comprising: The anchor bolt (206) is anchored in the wall (502), The first nut (216) is threaded onto the external thread (210) of the anchor bolt (206), a first fastening element (201) having a receiving sleeve (204) is pressed onto the anchor bolt (206) until the receiving sleeve (204) abuts against a first nut (216); The anchor bolt (206) is guided through the opening (104) of the bracket (100) until the edge (218) of the opening (104) abuts the clamping plate (202) of the first fastening element (201); A second fastening element (201) having a clamping plate (202) is pressed onto the anchor bolt (206) until the clamping plate (202) contacts the edge (218); A second nut (216) is threaded onto the external thread (210) to clamp the bracket (100) between the fastening elements (201); To align the bracket (100), the distance between the bracket (100) and the wall (502) is set by adjusting the first nut and the second nut (216) on the male thread (210), the vertical and horizontal position of the bracket (100) is set by moving the bracket (100) within a positioning tolerance (400) predetermined by the dimensions of the opening (104), and the angular misalignment (504) between the bracket (100) and the anchor bolt (206) is compensated for by rotating the ball joint (212); The nuts (516) are locked into place after alignment to secure the bracket (100) between the fastening elements (201).

11. A method for mounting a bracket (100) of a rail system (102) of an elevator installation on a wall (502) using a fastening system (200) according to any one of claims 1 to 7, comprising: The anchor bolt (206) is anchored in the wall (502), The first nut (216) is threaded onto the external thread (210) of the anchor bolt (206), a first fastening element (201) having a receiving sleeve (204) is pressed onto the anchor bolt (206) until the receiving sleeve (204) abuts against a first nut (216); The anchor bolt (206) is guided through the opening (104) of the bracket (100) until the edge (218) of the opening (104) abuts the clamping plate (202) of the first fastening element (201); A second fastening element (201) having a clamping plate (202) is pressed onto the anchor bolt (206) until the clamping plate (202) contacts the edge (218); A second nut (216) is threaded onto the external thread (210) to clamp the bracket (100) between the fastening elements (201); To align the bracket (100), the distance between the bracket (100) and the wall (502) is set by adjusting the first nut and the second nut (216) on the male thread (210), the vertical and horizontal position of the bracket (100) is set by moving the bracket (100) within a positioning tolerance (400) predetermined by the dimensions of the opening (104), and the angular misalignment (504) between the bracket (100) and the anchor bolt (206) is compensated for by rotating the ball joint (212); The nuts (516) are locked into place after alignment to secure the bracket (100) between the fastening elements (201).

12. 12. The method of claim 10 or 11, wherein the bracket (100) has at least one alignment notch (106), and the bracket (100) is aligned using the alignment notch (106) and a plumb line before locking the nut (216).

13. 13. The method according to any one of claims 10 to 12, wherein a spring washer (508) is placed on the anchor bolt (206) between the second fastening element (201) and the second nut (216), and the spring washer (508) is pretensioned by pretightening the second nut (216) to clamp the bracket (100) between the clamping plates (202).

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