Fastening device for fastening a positional code tape in an elevator shaft of an elevator system

Abstract

The following embodiments relate to a fastening device (11, 11.2) for fastening a positional code tape (9) in an elevator shaft (2), having a first receiving area (13) in which the end of the positional code tape (9), designed as a flat strip, is completely fixedly mounted in a defined orientation, a first fastener (14) for fastening the fastening device (11, 11.2) in the elevator shaft (2), and a decoupling element (20) which connects the first receiving area (13) and the first fastener (14), wherein the decoupling element (20) has a degree of elastic deformability, which is sufficient for decoupling purposes, in a direction extending parallel to the plane of extension of the flat face (9.2) of the positional code tape (9), said plane of extension being provided on the first receiving area (13). The following embodiments additionally relate to an elevator system (1) having an elevator shaft (2), a positional code tape (9) designed as a flat strip, and an elevator car (3) which can move along the elevator shaft (2), said positional code tape (9) being fastened to the elevator shaft (2) at at least one end by means of a fastening device (11, 11.2) according to one of the preceding claims.

Description

[0001] Fastening device for attaching a position code tape in a lift shaft of an elevator system

[0002] Technical area

[0003] The following statements relate to a fastening device for fastening one end of a position code tape in an elevator shaft of an elevator system, comprising a first receptacle for completely fixedly receiving the end of the position code tape designed as a flat tape in a defined orientation and a first fastening for fastening the fastening device in the elevator shaft.

[0004] Furthermore, the following embodiments relate to an elevator system comprising at least one elevator shaft, at least one position code tape extending along the elevator shaft and at least one elevator car movable along the elevator shaft.

[0005] Technical background

[0006] Elevator systems for the vertical transport of people and / or goods are an integral part of modern residential and commercial buildings. A typical elevator system comprises one or more elevator shafts in which one or more elevator cars are moved between landing positions by means of drives such as suspension drives or linear drives.

[0007] In such elevator systems, it is known that the absolute position of each car is recorded using a position code tape installed in the elevator shaft along the car's travel path and a sensor attached to the car for reading this code tape. Recording the absolute position is essential for controlling the elevator system. Position code tapes are usually designed as flat tapes with position marks provided on their flat sides. The position code tape is attached at opposite ends in the head or pit of the elevator shaft, particularly under pretension. Damage to the position code tape in the fastening area can be a disadvantage due to vibrations in the elevator system. In the worst case, this can lead to the position code tape tearing and thus to a failure of the absolute position determination.

[0008] Description - Technical solution

[0009] Based on this situation, the task at hand is to prevent damage to position code tapes at their fastening in elevator systems.

[0010] The present problem is solved by the features of the independent main claims. Advantageous embodiments are specified in the subclaims. To the extent technically feasible, the teachings of the subclaims can be combined arbitrarily with the teachings of the main and subclaims.

[0011] In particular, the object is accordingly achieved by a fastening device for fastening one end of a position code band in an elevator shaft of an elevator system, comprising a first receptacle for completely fixedly receiving the end of the position code band designed as a flat band in a defined orientation, a first fastening for fastening the fastening device in the elevator shaft and a decoupling element connecting the first receptacle and the first fastening, wherein the decoupling element has an elastic deformability sufficient for decoupling in a direction extending parallel to the plane of extension of the flat side of the position code band provided on the first receptacle.

[0012] Advantageous aspects are explained below, and preferred modified embodiments are described further below. Explanations, in particular regarding advantages and definitions of features, are fundamentally descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be expressly stated. Where ordinal numbers ("first", "second", etc.) are used, for example to designate a component, an element, a method step or a method action, these ordinal numbers are intended purely to differentiate the designation and do not indicate any dependencies or sequences. This means in particular that, for example, a device does not have to have a "first component" in order to have a "second component". A device can also have a "first component" and a "third component" without necessarily having a "second component".Several units of the same ordinal number can also be provided, for example several “first components”.

[0013] As understood here, an elevator system is designed, for example, with at least one vertical and / or horizontal elevator shaft and at least one car, but can also have several elevator shafts and / or several cars.

[0014] An elevator car, for example, is held and driven by a suspension element, with a drive device transmitting a drive torque to the suspension element via the drive shaft. The suspension element is also preferably connected to a counterweight associated with the car. A drive device is arranged, in particular, in a machine room above the elevator shaft(s) or in an upper section of an elevator shaft, the so-called shaft head. A suspension element is designed, in particular, as a rope, belt, strap, chain, or the like and carries tensile loads in the direction of its longitudinal extension.

[0015] Alternatively, a car is held and driven by a linear drive. A linear drive in an elevator system, for example, consists of a primary part extending along the elevator shaft and a secondary part located on the car. The primary part is formed from coils arranged one behind the other in a line, each of which is assigned a converter. Current is supplied to the coil to generate a magnetic field when the car is in the area of ​​the respective coil. The magnetic field is generated in such a way that the car is attracted or repelled by the magnetic field depending on its intended travel path. The secondary part is formed by a permanent magnet or electromagnet that interacts with the magnetic fields of the coil.An elevator shaft is a continuous shaft that extends over multiple floors and / or along multiple areas of a building and has a cross-section designed for the passage of the elevator car. An elevator shaft of the elevator system can extend vertically and / or horizontally. In one embodiment, the elevator system has at least one partial section of the elevator shaft in which the shaft extends vertically and at least one partial section in which the elevator shaft extends horizontally, wherein the elevator car can move from the vertically extending section to the horizontally extending section.

[0016] A position code tape extends in a strip-like manner along the elevator shaft and has a multitude of position marks that a sensor can use to determine the current position of the elevator car. The position marks are therefore uniquely assigned to a position along the position code tape. The position code tape can be a metal or plastic tape, for example. The position marks can be optical marks such as barcodes or QR codes, but they can also be magnetic, acoustic, or otherwise readable marks. The optical marks can also be formed, for example, by perforating the position code tape.A sensor for reading the position code tape is accordingly designed, for example, as an optical, magnetic, acoustic, or other type of sensor operating in accordance with a position mark, and is positioned relative to the position code tape in such a way that it can detect the position marks and reliably read them to determine the absolute position in the elevator shaft. The position code tape can also be formed from a carrier tape and position marks applied to it, for example, glued to it, whereby different materials are bonded together.

[0017] If a position code tape is designed as a flat tape, it has a flat side on which the position marks are arranged, whereby the position code tape extends in the plane of the flat side over a significantly greater width than its thickness orthogonal to this plane. The position code tape therefore extends essentially in its longitudinal direction and in the width direction within the plane of the flat side and transversely thereto only over a thickness sufficient for the stability of the position code tape in a depth direction. In accordance with the above, the terms longitudinal direction (parallel to the flat side plane), width direction (parallel to the flat side plane) and depth direction (orthogonal to the flat side plane) are to be understood below. The extension plane of the flat side is then formed in the longitudinal direction and the width direction.The position code tape is typically positioned with its longitudinal extension along the main extension of the elevator shaft. The longitudinal direction therefore extends vertically.

[0018] Elevator shaft (section) vertically and in the case of a horizontal elevator shaft (section) horizontally.

[0019] Completely fixed is understood to mean a recording of the position code tape at the first recording, in which a movement of the position code tape relative to the first recording is prevented by the fixation in all directions, i.e. in the longitudinal direction, the width direction and the depth direction.

[0020] If the position code tape is intended for recording in the first recording in a defined orientation, the arrangement of the position code tape therein is determined by the first recording. The position code tape can therefore only be recorded in one orientation in the first recording. In particular, the first recording incorporates the previously described respective spatial extensions of the position code tape in the longitudinal, width, and depth directions.

[0021] A decoupling element is understood to be an element that connects the first receptacle and the first fastening element to one another, in particular in a direction parallel to the intended longitudinal direction of the position code band, wherein the decoupling element allows relative movement in at least one direction through elastic deformation. Elastic deformability is understood to be sufficient for decoupling if it is sufficient to compensate for movement amplitudes of the position code band under typical load conditions on the elevator system without causing internal stress in the position code band that could cause damage.

[0022] The solution to the problem with the fastening device described above now includes the technical teaching that the position code tape is mounted on a first receptacle exposed in the width direction by means of the decoupling element. This is based on the finding that the position code tape, due to its flat design and its low thickness, can compensate for movements in the depth direction without stress or damage, even through elastic bending, while movements in the width direction, which are introduced at the connection between the position code tape and the first receptacle, cannot be compensated by the position code tape itself.Due to the completely fixed mounting of the position code tape and its relatively stiff widthwise configuration due to its wide widthwise extension, unbalanced movements in the width direction lead to internal stresses and thus permanent damage to the position code tape. Due to the elastic deformability of the decoupling element, relative movements in the width direction between the elevator shaft and the position code tape are now compensated by the decoupling element, so that no internal stresses are induced in the position code tape and damage is advantageously avoided.

[0023] As an alternative to the features described above, or in a preferred embodiment of the above, the decoupling element is designed as a metal sheet, wherein an extension plane of the metal sheet is orthogonal to the extension plane of the flat side of the position code strip provided on the first receptacle. The metal sheet achieves a favorable compromise between sufficient fastening of the position code strip to the elevator shaft, in particular in the longitudinal direction of the position code strip, and sufficient elasticity in the width direction. Under prestress, the metal sheet extends straight in the longitudinal direction, such that the position code strip is securely held in its intended arrangement in the elevator shaft. Furthermore, a metal sheet, which can be designed as a stainless steel or aluminum sheet, for example, is subject to stress even under regular load orDeformation only a slight aging, so that a long service life can be achieved with low maintenance.

[0024] As an alternative to the immediately above-described embodiment, the decoupling element is designed as a rubber body. Even with a rubber body, a favorable compromise can be achieved between adequate fastening of the position code band to the elevator shaft, particularly in the longitudinal direction of the position code band, and sufficient elasticity in the width direction. Under pre-tension, the rubber body is aligned in the longitudinal direction, so that the position code band is securely held in its intended arrangement in the elevator shaft. Particularly advantageously, rubber materials can be easily configured for different loads or movement amplitudes, so that the fastening device can be easily adapted for different elevator systems, for example, depending on the pre-tension of the position code band.

[0025] As an alternative to the features described above, or in a preferred embodiment of the above, the first receptacle is connected to a second receptacle for completely fixedly receiving the decoupling element. The decoupling element is then held on the second receptacle and can be separated from the first receptacle for maintenance or replacement if necessary. In particular, depending on the design of the decoupling element, the first receptacle and the second receptacle can be connected to one another or designed to match the positional relationship between the position code strip and the decoupling element, e.g., in the case of a metal sheet that is orthogonal to the plane of extension of the flat side of the position code strip provided on the first receptacle, rotated by 90° to one another.

[0026] As an alternative to the features described above, or in a preferred embodiment of the above, the first fastening is connected to a third receptacle for completely fixedly receiving the decoupling element. The decoupling element is then held on the third receptacle and can be separated from the first fastening for maintenance or replacement if necessary. In particular, depending on the design of the decoupling element, the first fastening and the third receptacle can be connected to one another or designed to match the positional relationship between a fastening point on the elevator shaft and the decoupling element, e.g., in the case of a metal sheet that is orthogonal to the plane of extension of the flat side of the position code strip provided on the first receptacle, rotated by 90° to one another.

[0027] As an alternative to features described immediately above, or in a preferred embodiment of what has been described immediately above, it is provided that the first receptacle and the second receptacle are formed integrally with one another and / or the first fastening and the third receptacle are formed integrally with one another. The fastening device is then therefore formed sequentially from a first receptacle element comprising the first fastening and the third receptacle, the decoupling element, and a second receptacle element comprising the second receptacle and the first receptacle. Due to the integral design of the first receptacle element and / or the second receptacle element, a further connection between the first receptacle and the second receptacle or the first fastening and the third receptacle can be dispensed with, so that assembly is simple and the force is transmitted reliably through the receptacle elements.

[0028] As an alternative to the features described above, or in a preferred embodiment of the above, the first receptacle is designed for the frictional fixing of the position code tape, in particular by means of two clamping jaws. Attaching the position code tape to the first receptacle is then easy to achieve during installation. Such attachment is provided, for example, by fastening means designed as screws, which press the two clamping jaws together, with the position code tape being clamped between the clamping jaws.

[0029] As an alternative to the features described above, or in a preferred embodiment of the above, the first receptacle is designed for positively securing the position code tape, in particular by means of fastening means that penetrate the position code tape. Fastening the position code tape to the first receptacle is then easy to establish during installation. In particular, a positive connection can be combined with a non-positive connection, for example by means of clamping jaws that have through-holes for fastening means designed as screws, wherein screws attached there penetrate further through-holes on the position code tape and are designed to press the clamping jaws and the position code tape together. The screws then simultaneously create a non-positive and positive connection.

[0030] As an alternative to the features described above, or in a preferred embodiment of the above, it is provided that the first receptacle, the first fastening element, the second receptacle, and / or the third receptacle have at least one screw connection. A screw connection is particularly easy to produce during installation and, as described above, can simultaneously create both a positive and a frictional connection.

[0031] As an alternative to the features described above, or in a preferred embodiment of the above, the first receptacle is designed for the position code tape to be looped around. By looping around the first receptacle, a particularly secure, fixed receptacle for the position code tape can be achieved, in which, in particular, the pretension of the position code tape can be easily and continuously adjusted.

[0032] The object is further achieved by an elevator system comprising at least one elevator shaft, at least one position code band configured as a flat band extending along the elevator shaft, and at least one elevator car movable along the elevator shaft, wherein the position code band is fastened to the elevator shaft at at least one end by means of a fastening device described above. The advantages described above with regard to the fastening device can be achieved in a corresponding manner with the elevator system. In particular, the mobility of the first receptacle relative to the first fastening in the width direction, which is achieved by means of the decoupling element, prevents damage to the position code band as a result of vibrations in the elevator system, thus ensuring a long service life for the position code band and reliable absolute position detection.

[0033] In a preferred embodiment of the immediately above-described embodiment, the position code tape is secured to the elevator shaft at both ends by means of a previously described fastening device. The previously described advantages of the fastening device can thus be achieved on both sides of the position code tape and thus for the entire position code tape.

[0034] As an alternative to the features described immediately above, or in a preferred embodiment of the immediately above, the position code band has at least one recess at at least one end for a fastening means extending through the position code band to hold the position code band to the first receptacle. In this way, the position code band can be held particularly easily in a form-fitting and / or force-fitting manner by the fastening means, whereby the connection is particularly easy to establish in an installation situation.

[0035] As an alternative to the features described immediately above, or in a preferred embodiment of the immediately above, the position code band is designed as a metal band. With a relatively stiff metal band, which is therefore relatively susceptible to failure under periodically occurring internal stresses, the advantages of decoupling are achieved to a particularly high degree.

[0036] Short description of the drawings

[0037] A preferred technical solution is explained in more detail below with reference to the accompanying drawings using preferred embodiments. The term "figure" is abbreviated to "Fig." in the drawings.

[0038] The drawings show

[0039] Fig. 1 is a highly schematic view of an elevator installation in one embodiment;

[0040] Fig. 2 is a perspective view of a fastening device according to the prior art;

[0041] Fig. 3 is a perspective view of a fastening device according to the present disclosure in one embodiment;

[0042] Fig. 4a is a front view of the fastening device according to the embodiment of Fig. 3 on a clamping device; and

[0043] Fig. 4b is a side view of the fastening device according to the embodiment shown in Fig. 3 on a clamping device.

[0044] Detailed description of the drawings

[0045] The described embodiments are merely examples that can be modified and / or supplemented in a variety of ways within the scope of the claims. Each feature described for a specific embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a specific claim category can also be used correspondingly in an embodiment of a different claim category. Figure 1 shows an elevator installation 1 with an elevator shaft 2 and a car 3 movable in the elevator shaft 2 in a vertical direction V. The elevator shaft 2 has a shaft pit 2.1 and a shaft head 2.2 and extends below a machine room 4.The elevator car 3 is guided in the elevator shaft 2 on guide rails not shown in detail and is held on a support means 5 which is guided via deflection means 6 and a drive device 7 and is further connected to a counterweight 8.

[0046] Furthermore, a position code strip 9 is arranged along the travel path of the elevator car 3 in the elevator shaft 2. The strip has, on a flat side 9.2 facing the elevator car 3, position marks 9.1, which are only indicated in the drawing, over its entire extent, here each designed as QR codes. The position marks 9.1 differ from one another and each have unique identification features, so that the position in the elevator shaft 2 can be recognized using a respective position mark 9.1. Furthermore, a sensor arrangement 10 is attached to the elevator car 3, purely by way of example to a car roof of the elevator car 3. By reading a respective position mark 9.1 and uniquely identifying it, a respective sensor of the sensor arrangement 10 recognizes its absolute position in the elevator shaft 2 and thus the absolute position of the elevator car 3 in the elevator shaft 2.The position code tape 9 is held in the elevator shaft 2 by means of fastening devices 11 described in more detail below.

[0047] Figure 2 shows a fastening device 11.1 according to the prior art. Like all fastening devices 11.1 described below, this is explained in a coordinate system consisting of a longitudinal direction L of the position code tape 9, a width direction B of the position code tape 9, and a depth direction T of the position code tape 9. The fastening device 11.1 is essentially formed by a retaining plate 12, wherein the position code tape 9 wraps around the retaining plate 12 at a web 12.1 and, folded upon itself, rests against the retaining plate 12, where it is held completely fixed by a cable tie 12.2.

[0048] Figure 3 shows a perspective view of a fastening device 11.2 according to the present disclosure with a first receptacle 13 on a first receptacle element 15.1 and a first attachment 14 on a second receptacle element 15.2. In the first receptacle 13, the position code strip 9 is held between two clamping jaws 13.1, 13.2, which are clamped together in the depth direction T by means of screw connections arranged next to the position code strip 9. The clamping jaws 13.1, 13.2 thus grip the position code strip 9 on the flat side 9.2, which extends in its plane of extension in the width direction B and the longitudinal direction L. The first attachment 14 has a first attachment leg 14.1, with which it is attached, or more precisely screwed, to a component 16 of the elevator shaft 2.

[0049] A decoupling element 20 formed as a metal sheet is held between the first receiving element 15.1 and the second receiving element 15.2, more precisely between a second receptacle 17 and a third receptacle 18. The decoupling element 20 extends primarily in the longitudinal direction L and in the depth direction T and has only a small thickness in the width direction B. The first receiving element 15.1 and the second receiving element 15.2 are therefore movable relative to one another in the width direction B by means of the decoupling element 20, because the decoupling element 20 is flexible in this direction. The width direction B is therefore parallel to the extension plane (WxL) of the flat side 9.2 of the position code tape 9 provided on the first receptacle 13. Like the first receptacle 13, the second receptacle 17 and the third receptacle 18 each consist of two opposing clamping jaws 17.1, 17.2 and 18.1, 18 respectively.2, which are clamped together by means of screw connections in the width direction B. For this purpose, the receiving elements 15.1, 15.2 are each formed in one piece by two areas arranged at right angles to one another.

[0050] Figures 4a and 4b show the fastening device 11.2 in further views, once in a front view according to Figure 4a and once in a side view according to Figure 4b, whereby the previously described features of the fastening device 11.2 are not described again. Additionally, Figures 4a and 4b show a tensioning device 21, which is arranged in the elevator shaft 2 and, from the perspective of the fastening device 11.2, is associated with the elevator shaft 2. The tensioning device 21 has tensioning elements 22, which act on the component 16 and thus on the entire fastening device 11.2 to pretension the position code band 9. List of Reference Symbols

[0051] 1 elevator system

[0052] 2 elevator shaft

[0053] 2.1 Shaft pit of the elevator shaft

[0054] 2.2 Shaft head of the elevator shaft

[0055] 3 car

[0056] 4 Engine room

[0057] 5 load-bearing means

[0058] 6 deflection devices

[0059] 7 Drive device

[0060] 8 Counterweight

[0061] 9 Position code tape

[0062] 9.1 Position marks of the position code tape

[0063] 9.2 Flat side of the position code tape

[0064] 10 Sensor arrangement

[0065] 11 Fastening device

[0066] 11.1 Fastening device

[0067] 11.2 Fastening device

[0068] 12 retaining plate

[0069] 12.1 Web of the retaining plate

[0070] 12.2 Cable ties of the retaining plate

[0071] 13 first recording

[0072] 13.1 first clamping jaw of the first holder

[0073] 13.2 second clamping jaw of the first holder

[0074] 14 first fastening

[0075] 14.1 first fastening leg of the first fastening

[0076] 15.1 first receiving element

[0077] 15.2 second receiving element

[0078] 16 Component of the elevator shaft

[0079] 17 second recording

[0080] 17.1 first clamping jaw of the second holder

[0081] 17.2 second clamping jaw of the second holder 18 third holder

[0082] 18.1 first clamping jaw of the third holder

[0083] 18.2 second clamping jaw of the third holder

[0084] 20 Decoupling element 21 Clamping device

[0085] 22 clamping elements

[0086] B Width direction

[0087] L longitudinal direction

[0088] T depth direction V vertical direction

Claims

Claims 1. A fastening device (11, 11.2) for fastening one end of a position code band (9) in an elevator shaft (2) of an elevator system (1), comprising a first receptacle (13) for completely fixedly receiving the end of the position code band (9) designed as a flat band in a defined orientation; a first fastening (14) for fastening the fastening device (11, 11.2) in the elevator shaft (2); and a decoupling element (20) connecting the first receptacle (13) and the first fastening (14); wherein the decoupling element (20) has sufficient elastic deformability for decoupling in a direction extending parallel to the plane of extension of the flat side (9.2) of the position code band (9) provided on the first receptacle (13).

2. Fastening device (11, 11.2) according to claim 1, wherein the decoupling element (20) is designed as a metal sheet, wherein an extension plane of the metal sheet is orthogonal to the extension plane of the flat side (9.2) of the position code band (9) provided on the first receptacle (13).

3. Fastening device (11, 11.2) according to claim 1, wherein the decoupling element (20) is designed as a rubber body.

4. Fastening device (11, 11.2) according to one of the preceding claims, wherein the first receptacle (13) is connected to a second receptacle (17) for completely fixedly receiving the decoupling element (20).

5. Fastening device (11, 11.2) according to one of the preceding claims, wherein the first fastening (14) is connected to a third receptacle (18) for completely fixedly receiving the decoupling element (20).

6. Fastening device (11, 11.2) according to claim 4 or 5, wherein the first receptacle (13) and the second receptacle (17) are formed integrally with each other and / or the first fastening (14) and the third receptacle (18) are formed integrally with one another.

7. Fastening device (11, 11.2) according to one of the preceding claims, wherein the first receptacle (13) is designed for non-positively fixing the position code tape (9), in particular by means of two clamping jaws (13.1, 13.2).

8. Fastening device (11, 11.2) according to one of the preceding claims, wherein the first receptacle (13) is designed for the positive fixing of the position code tape (9), in particular by means of fastening means penetrating the position code tape (9).

9. Fastening device (11, 11.2) according to one of the preceding claims, wherein the first receptacle (13), the first fastening (14), the second receptacle (17) and / or the third receptacle (18) have at least one screw connection.

10. Fastening device (11, 11.2) according to one of the preceding claims, wherein the first receptacle (13) is designed to be wrapped around by the position code tape (9).

11. Elevator installation (1), comprising at least one elevator shaft (2); at least one position code band (9) designed as a flat band extending along the elevator shaft (2); and at least one elevator car (3) movable along the elevator shaft (2); wherein the position code band (9) is fastened to the elevator shaft (2) at at least one end by means of a fastening device (11, 11.2) according to one of the preceding claims.

12. Elevator installation (1) according to claim 11, wherein the position code tape (9) is fastened to the elevator shaft (2) at both ends by means of a fastening device (11, 11.2) according to one of claims 1 to 10.

13. Elevator installation (1) according to claim 11 or 12, wherein the position code band (9) has at least one recess for a position code band (9) at the at least one end has a through fastening means for holding the position code tape (9) on the first receptacle (13).

14. Elevator installation (1) according to one of claims 11 to 13, wherein the position code band (9) is designed as a metal band.

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