Speed ​​monitoring device for personnel transport equipment

Abstract

The invention relates to a speed monitoring device (41) for measuring the number of revolutions or rotational speed of a main drive shaft (27) of a passenger transport device (1). For this purpose, the speed monitoring device comprises at least one speed sensor (43) with an input shaft (45), a pinion (47) and a detection device (49), which is designed to be arranged on a shaft shell surface (39) of a main drive shaft (27) of the passenger transport device (1), the number of revolutions of which is to be measured. A bracket (61) is also provided for fixing the speed sensor (43) and the pinion (47) in a position fixed relative to the rotation axis of the detection device (49), wherein the detection device (49) has a toothing (53) which can be coupled to the pinion (47) in a rotationally transmitting manner, and the pinion (47) is rotatably supported in the bracket (61) in two bearing positions (55, 57).

Description

Technical Field

[0001] The invention relates to a speed monitoring device for measuring the number of revolutions or rotational speed of a main drive shaft of a passenger transport device, and to a passenger transport device having such a speed monitoring device. Background Art

[0002] Such people movers designed as escalators or moving walkways have a main drive shaft with at least one drive sprocket for driving and deflecting a conveyor belt. People movers are common and can be used, for example, in buildings for public transportation, such as train stations, airports, subway stations, etc. In addition, many such people movers can also be found in department stores, shopping centers, amusement parks, etc. Depending on the field of application and the location of use, these people movers have to meet different requirements, which are dictated on the one hand by standards such as EN115-1 and on the other hand by customer-specific requirements such as conveying performance and conveying height.

[0003] Since people are transported by escalators and moving walkways, special safety regulations are subject to compliance and they must be built and constructed very safely. For example, one possible approach to increasing safety could be to specify a safety factor with regard to the strength of safety-relevant components. Another possibility is to provide sensors in the escalator or moving walkway, which can measure certain operating parameters. The measurement signals of the sensors are transmitted to the controller of the escalator or moving walkway and the possible danger is evaluated there. In order to monitor the movement of the conveyor belt (designed as a step belt or pallet belt) of the people transport device, its movement can be detected by a speed monitoring device and the detected measurement signal transmitted to the controller.

[0004] The conveyor belt is arranged circumferentially or rotatably in the personnel transport device and is deflected from the forward direction to the return direction between two deflection areas. For example, it is now possible to detect the steps or pedals passed by with the help of sensors and measure their speed. Another option is to monitor the main drive shaft with the help of sensors. For example, such a speed monitoring device is disclosed in EP3530606A1. The speed monitoring device has a collection device, which can be connected to the shaft shell surface of the main drive shaft. A speed sensor is also provided, and a friction wheel is provided on its input shaft. When the main drive shaft rotates, the collection device is driven to rotate, and the movement of the collection device is transmitted to the speed sensor through the friction wheel.

[0005] A disadvantage of speed monitoring devices of the type described above is that the movement detected by the friction wheel can be transmitted incorrectly. For example, the coefficient of friction between the friction wheel and the acquisition device can be reduced by oil or other lubricants, so that very rapid movements and speed changes of the main drive shaft cannot be transmitted to the friction wheel with sufficient accuracy. Another problem is that dirt deposits adhere to the surface during operation and are rolled onto its surface by the two rotating friction partners. Such rolled-off dirt deposits lead to changes in the diameter of the acquisition device and / or changes in the diameter of the friction wheel. As a result, the transmission ratio between the two components changes, so that speed changes that do not actually exist are detected, and the evaluation of the speed change can trigger an alarm signal.

[0006] JP2007217090A discloses another possible arrangement of a speed monitoring device, wherein an encoder is connected to a shaft of a reduction gear. Summary of the invention

[0007] Therefore, the object of the present invention is to propose a speed monitoring device that overcomes the above-mentioned disadvantages.

[0008] The object is achieved by a speed monitoring device for measuring the number of revolutions or rotational speed of a main drive shaft of a personnel transport device. The speed monitoring device has at least one speed sensor with an input shaft. In addition, the speed monitoring device comprises a detection device, which is configured so that the detection device can be arranged on the shaft shell surface of the main drive shaft of the personnel transport device, the number of revolutions of which is to be measured. In addition, the speed monitoring device comprises a bracket for fixing the speed sensor in a fixed position relative to the rotation axis of the detection device. In addition, the speed monitoring device has a pinion that is mechanically connected to the input shaft of the speed sensor so that the rotation of the pinion can be transmitted to the input shaft. In order to be able to accurately transmit the rotational movement of the detection device, the detection device has meshing parts that can be connected to the pinion in a positively locking, rotationally transferable manner. In order to protect the input shaft of the speed sensor from undesirable influences, the pinion is rotatably supported in the bracket in two bearing positions. In this context, the feature "pinion" is to be understood as a wheel with a meshing part, in particular a gear or a sprocket.

[0009] Speed ​​sensors such as rotation detectors, angle detectors, encoders, etc. are high-precision and therefore very sensitive sensors. In particular, the speed sensor has a bearing on the input shaft, which is very sensitive to impacts and excessive forces. For example, such forces may be caused by foreign matter that enters between the meshing of the pinion and the acquisition device. Due to the geometry of the meshing, radial forces also act on the pinion, which, if the pinion is directly supported on the input shaft, will lead to an increase in the load on the bearing of the input shaft and significantly reduce its service life. In other words, the support of the pinion on both sides in the bearing position thus ensures that no other forces and moments act on the input shaft of the speed sensor except for the rotational movement. This means that by supporting the pinion on two bearing positions, the input shaft can be completely disconnected from impacts and excessive forces, especially bending moments. As a result, the service life of the speed sensor can be increased, thereby improving the reliability of the system.

[0010] According to the invention, the collecting device is designed to be fastened to the side face of a shoulder of the main drive shaft. This allows the collecting device to be easily and securely fastened and prevents the collecting device from being able to move relative to the main drive shaft. Such a shoulder can be, for example, a handrail drive sprocket which is formed on the main drive shaft or fastened to the main drive shaft, via which the handrail drive of the personnel transport device can be driven. For example, bolts can be used for fastening, which are arranged parallel to the axis of rotation of the main drive shaft and pass through the handrail drive sprocket and the half ring of the split adapter.

[0011] In one embodiment of the invention, the rotationally transmitting coupling is achieved by direct meshing of the pinion in the meshing of the acquisition device. In other words, the meshing of the pinion meshes directly in the meshing of the acquisition device. Since the pinion is rotatably supported in two bearing locations, the lateral forces generated by the direct meshing of the pinion in the meshing of the acquisition device are well supported in the bearing locations. This means that these forces are not transmitted to the input shaft of the speed sensor.

[0012] In another embodiment, the rotation-transmitting connection between the pinion and the meshing part is realized by a positive-locking transmission element, such as a chain, a toothed belt or an intermediate gear. The positive-locking transmission element is coordinated with the meshing part of the pinion and the collecting device and, logically speaking, due to its design, the transmission element can transmit the rotational movement of the collecting device to the pinion. This arrangement allows the pinion and the speed sensor connected thereto to be arranged at a greater distance from the main drive shaft. This arrangement is necessary when the spatial conditions between the conveyor belts do not allow the pinion to mesh directly in the meshing part of the collecting device. The tensile force of the chain or toothed belt acting on the pinion is transmitted to the support via two bearing points and does not act on the input shaft of the speed sensor.

[0013] In another embodiment of the invention, a torsionally rigid or torsionally rigid, flexible coupling can be provided between the pinion and the input shaft. The coupling can compensate for angular errors and offsets between the central longitudinal axis of the input shaft and the central longitudinal axis of the pinion. Such a torsionally rigid, flexible coupling is preferably made of metal. Possible coupling types are claw couplings, tooth couplings, metal bellows couplings, spring web couplings, etc.

[0014] In another embodiment of the present invention, the collecting device may include an annular, segmented or split adapter. In this case, the engagement portion is arranged on the annular outer surface of the collecting device. Since the adapter is split, it can be mounted on the main drive shaft without disassembly.

[0015] In an alternative design, the collecting device of the speed monitoring device can include an annular, split adapter, wherein the toothing is arranged on the inner face of the collecting device. Since the collecting device is arranged below the front section of the rotating conveyor belt, it is susceptible to falling dirt. With the internal toothing, a high level of protection can be achieved against dirt accumulation in the toothing.

[0016] In order to enable precise positioning of the pinion relative to the acquisition device, the support is preferably designed in at least two parts, the support comprising a first support part and a second support part. Two bearing locations can be formed on the first support part, in which the pinion is rotatably supported. In addition, the speed sensor can also be arranged on the first support part. For example, a fastening region can be formed on the second support part, which is provided for fastening the support to a fixed structural component of the personnel transport device. The first support part and the second support part are adjustably connected to each other via a connecting point.

[0017] Furthermore, the speed monitoring device can include a protective housing that can be fixed to the bracket. The protective housing can cover the pinion and the speed sensor. Thus, the protective housing of the protective cover has the same effect on falling dirt. In another design, the protective housing can also cover the pinion, the speed sensor and the acquisition device. Therefore, the protective housing designed in the form of a protective cover also protects the engagement between the pinion and the acquisition device, thereby preventing the meshing of the pinion and the acquisition device from being damaged by falling hard objects. In another design, the protective housing can also enclose the pinion, the speed sensor and the acquisition device. In this case, the protective housing is preferably designed in two parts so that the protective housing can also be assembled or disassembled when the main drive shaft is installed in the personnel transportation device. Therefore, the last-mentioned protective housing protects the entire speed monitoring device in all directions, so that it can be optimally isolated from environmental influences. If necessary, a heater can also be integrated in the protective housing to prevent the formation of condensation water in the protective housing.

[0018] In order to install the speed monitoring device in a people moving device designed as an escalator or a moving walkway, the acquisition device of the speed monitoring device can be fixed on the shaft shell surface of the main drive shaft of the people moving device. Another component of the speed monitoring device (which at least includes a bracket of the speed monitoring device, a speed sensor and a pinion) can be fixedly fixed on a structural component of a support structure of the people moving device. The main drive shaft of the people moving device can also be rotatably supported in the support structure.

[0019] It is clear from the above description that the speed monitoring device can not only be installed during the assembly of the people mover in the manufacturing plant. Due to the annular two-part adapter, existing people movers supported in buildings can also be retrofitted with a speed monitoring device of the above type. In addition, this design facilitates the maintenance of the speed monitoring device.

[0020] The personnel transport device may have a control device and / or a signal transmission device to an external data processing device. The signals generated by the speed sensor may be transmitted to the control device and / or the signal transmission device continuously or in discrete time segments. These signals may be compared with limit values ​​such as permissible acceleration and deceleration values, the maximum permissible speed of the conveyor belt, etc. If one of these limit values ​​is exceeded, an alarm signal may be output to trigger the action of the appropriate control device, such as emergency stop of the conveyor belt.

[0021] In addition, in parallel with the actually existing people moving equipment, there may be a digital avatar data set that virtually reflects the people moving equipment. In this case, the signal generated by the speed sensor can be transmitted to the digital avatar data set by the signal transmission device. By processing these signals in conjunction with the data of the digital avatar data set, the dynamic process of the people moving equipment in operation can be simulated and displayed in real time on the digital avatar data set.

[0022] The digital double data set includes characteristic attributes of components of the physical people mover in a machine-processable manner. The digital double data set is constructed based on a component model data set that includes data determined by measuring the characteristics of the physical people mover after it is assembled and installed in a building.

[0023] The characteristic attributes of a physical component may be the geometric dimensions of the component, the weight of the component and / or the surface characteristics of the component. The geometric dimensions of the component may be, for example, the length, width, height, cross section, radius, fillet, etc. of the component. The surface characteristics of the component may include, for example, the roughness, texture, coating, color, reflectivity, etc. of the component. However, the characteristic attributes may also be dynamic information, such as the motion vector of the component model data set, which indicates the direction and speed of movement of the component model data set relative to the static reference point of the surrounding component model data set or the digital double data set.

[0024] Characteristic properties can relate to a single component or a group of components. For example, characteristic properties can relate to a single component assembled from a larger, more complex group of components. Alternatively or additionally, these properties can also relate to more complex equipment assembled from multiple components, such as a drive machine, a gear device, a conveyor chain, etc.

[0025] The signal from the rotation sensor is transmitted as measurement data to the digital avatar data set, and the characteristic attributes of the component model data set associated with the transmitted measurement data are re-determined using the rule set. The characteristic attributes of the associated component model data set are then updated by the newly determined characteristic attributes. Specifically, for example, the number of revolutions measured by the rotation sensor can be transmitted to the component model data set representing the main drive shaft and the component model data set forming the conveyor belt. Therefore, for example, when the digital avatar data set is reflected as a virtual presentation on the screen, all dynamically movable component model data sets can be displayed at the same speed as the physical components in the physical personnel transport device when the signal is detected. The interaction of the component model data sets can be simulated based on the movement of the component model data sets, and the forces acting on the components can be determined using corresponding known calculation procedures from the physical, mechanics and material strength fields.

[0026] Thereafter, with the aid of the digital avatar data set, it is possible to track and determine by calculation and / or by static and dynamic simulation by monitoring the changes and trends of the updated characteristic properties of the rotating conveyor belt and their influence on the components of the conveyor belt and the components interacting with these components. Of course, the evaluation of dynamic processes with regard to the exceeding of limit values ​​can also be carried out on the digital avatar data set, as described above in conjunction with the control device.

[0027] The invention also includes a method for installing a speed monitoring device of the above-mentioned type in a people moving device designed as an escalator or a moving walkway. In this case, the acquisition device is fixed to the shaft shell surface of the main drive shaft of the people moving device. In a further step, a component of the speed monitoring device can be fixedly attached adjacent to the main drive shaft on a structural component of a supporting structure of the people moving device, wherein the main drive shaft is also rotatably supported in the supporting structure. The component comprises at least a support for the speed monitoring device, a speed sensor and a pinion.

[0028] It should be noted that some feasible features and advantages of the present invention are described herein with reference to different embodiments. Those skilled in the art recognize that these features can be combined, adjusted or replaced in a suitable manner to implement other embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The embodiments of the present invention are described below in conjunction with the accompanying drawings, wherein the drawings and the description should not be construed as limiting the present invention.

[0030] Figure 1 An overview diagram schematically shows the most important parts or components of an escalator.

[0031] Figure 2 Shown in 3D view Figure 1 The present invention provides a segmentation of the main drive shaft and a feasible first design and arrangement of the speed monitoring device.

[0032] Figure 3 Shown in 3D view Figure 1 A feasible second design scheme and arrangement of the main drive shaft and the speed monitoring device.

[0033] Figure 4 Shown in 3D view Figure 1 The segmentation of the main drive shaft and the feasible third design scheme and arrangement of the speed monitoring device.

[0034] Figure 5 Shown in cross-section Figure 4 Details of the speed monitoring device shown in .

[0035] The drawings are merely schematic and not drawn to scale. The same reference numerals denote the same or equivalent features throughout the various drawings. DETAILED DESCRIPTION

[0036] Figure 1 A passenger transport device 1 designed as an escalator is shown. Here, only the most important components of the passenger transport device 1 are shown schematically.

[0037] The people transport device 1 connects a first floor E1 of a building 111 with a second floor E2 of the building 111. To this end, the people transport device 1 has a support structure 37, which is supported on the two floors E1, E2 in the building 111. The support structure 37 is designed to be stable and load-bearing, so that the support structure supports the weight of the remaining components of the people transport device 1 and the transported users and their belongings toward the building 111.

[0038] In the support structure 37, the conveyor belt 3 is arranged to revolve between a first deflection area 9 and a second deflection area 7. The conveyor belt 3 has steps 5 on which users can stand. For deflection, a deflection wheel 11 is arranged in the deflection area 9 in the first floor E1. In the second floor E2, a drive wheel 13 is arranged in the deflection area 7, which is used not only for deflecting the conveyor belt 3, but also for driving the conveyor belt. For this purpose, the drive wheel 13 is fixed to the main drive shaft 27 in a rotation-transmitting manner. In addition, a drive sprocket 15 is arranged on the main drive shaft 27. The drive sprocket 15 is operatively connected to a drive pinion 17 via a drive chain 25. The drive pinion 17 is driven by a motor 21, wherein the rotational movement of the drive pinion is reduced by a transmission 19 and transmitted to the pinion 17. The motor 21 and the transmission 19 together form a drive unit 23.

[0039] The passenger transport device 1 also has a handrail 35, which is also arranged to rotate. In order to drive the handrail, the passenger transport device 1 has a handrail drive 33. The handrail drive 33 is operatively connected to the handrail drive sprocket 29 via a handrail drive chain 31, and the handrail drive sprocket 29 is also arranged on the main drive shaft 27 in a rotation-transmitting manner. This configuration means that the movement of the handrail 35 is synchronized with the movement of the conveyor belt 3 or its steps 5.

[0040] In order to detect the speed of the conveyor belt 3 or the handrail 35, a speed monitoring device 41 is provided, which can detect the number of revolutions or rotational speed of the main drive shaft 27. As symbolically indicated by arrow 109, the signal generated by the speed monitoring device 41 and reflecting the rotational speed or number of revolutions of the main drive shaft 27 can be transmitted to the signal transmission device 91 and / or the control device 93 of the passenger transport system 1. The signals from the speed monitoring device 41 can be evaluated in a suitable manner in the control device 93. In this case, for example, these signals can be compared with the motor control data and motor signals of the motor 21, so that the conveyor belt 3 of the passenger transport system 1 is stopped when there is a deviation exceeding a certain tolerance.

[0041] Figure 1Another possible approach for evaluating the signals from the speed monitoring device 41 or its speed sensor 43 is shown. For this purpose, a digital avatar data set 101 is used, which is stored, for example, in a data processing device 95 (cloud). The digital avatar data set 101 virtually presents the personnel transport device 1. This means that each individual component of the personnel transport device 1 is also reflected in the digital avatar data set 101. The digital avatar data set 101 is preferably constructed as a component model data set 113, which are interconnected by interface information. In other words, the components of the personnel transport device 1 are reflected as component model data sets 113. Each of these component model data sets has all the characteristic properties of the physical component to be reflected as completely as possible. In addition, the interface information present in the digital avatar data set 101 is used to reflect the arrangement of the components with respect to each other, the interaction of the components with respect to each other when applying and transmitting forces, torques, etc., and, if necessary, the freedom of movement of the components with respect to each other.

[0042] The digital double data set 101 can be downloaded from the data processing device 95, for example via an input / output interface 99 (a personal computer in the example shown), further processed and used for the simulation 105. Of course, the simulation 105 can also be performed in the data processing device 95, in which case the input / output interface 99 may only have the function of a computer terminal.

[0043] In order to be able to perform simulation 105, for example, as indicated by double arrow 97, the signal from the speed sensor 43 of the speed monitoring device 41 can be transmitted to the digital avatar data set 101 via the signal transmission device 91. In this way, the simulation 105 can then be performed by checking how the signal from the speed monitoring device 41 affects the individual virtual components of the digital avatar data set 101 represented by the component model data set 113.

[0044] Throughout the execution of simulation 105, input / output interface 99 communicates with data processing device 95, as indicated by double arrow 115. Thus, simulation 105 and simulation results 107 can be presented as virtual representation 103 on input / output interface 99. In this way, the processes occurring while personnel transport device 1 is operating can be displayed in real time on input / output interface 99 in the form of an evaluation.

[0045] exist Figure 2 A first possible design of the speed monitoring device 41 is shown in FIG. Figure 2 Only the structural component 77 of the personnel transport device 1 and a portion of the main drive shaft 27 are shown. The structural component 77 of this embodiment is Figure 1 A portion of a support structure 37 is shown.

[0046] The main drive shaft 27 has a shaft housing surface 39. The handrail drive sprocket 29 (also shown in FIG. Figure 1 ) is fixed to the shaft shell surface 39. Directly adjacent to the handrail drive sprocket 29, the detection device 49 is arranged on the main drive shaft 27 or on the shaft shell surface 39 of the main drive shaft. The detection device 49 can include an annular, split adapter 63, which has a first half ring 65 and a second half ring 67. With this design, the detection device 49 can also be fixed to the shaft shell surface 39 when the main drive shaft 27 is supported in the personnel conveying device 1. Preferably, the first half ring 65 and the second half ring 67 are fixed to the side surface 69 of the handrail drive sprocket 29. This can be done, for example, by screws. However, it is also possible to screw the first half ring 65 and the second half ring 67 together by providing screws that connect the two half rings 65, 67 to each other, so that the inner ring surface of the annular, split adapter 63 is clamped on the shaft shell surface 39. The detection device 49 also has a toothing 53 formed on the outer ring surface of the first half ring 65 and the second half ring 67.

[0047] The speed monitoring device 41 further comprises a rotational speed sensor 43, a pinion 47, a coupling 51 and a bracket 61, which together form a subassembly 87. In order to ensure that the pinion 47 has a certain adjustability and adjustability relative to the acquisition device 49, the bracket 61 is designed to be divided into two parts and thus has a first bracket part 71 and a second bracket part 73. The second bracket part 73 can be connected to the structural part 77 via a fixing area 75. The first bracket part 71 is adjustably connected to the second bracket part 73 via a connecting portion 79 relative to the second bracket part 73.

[0048] The first support part 71 also has a bearing seat 89 with two bearing positions 55, 57, in which the pinion 47 is rotatably supported. A receiving flange 117 is also formed on the bearing seat 89, by which the rotation sensor 43 can be connected to the first support part 71. In order to protect the input shaft 45 of the speed sensor 43 from bending loads, the input shaft 45 is connected to the pinion 47 in a rotationally transmitting manner via a torsionally rigid, easily deformable coupling 51. The pinion 47 is connected to the meshing part 53 of the detection device 49 in a rotationally transmitting manner via a positive-locking transmission element 59. In the present embodiment, the positive-locking transmission element 59 can be a chain or a toothed belt. For a better overview, the transmission element 59 is Figure 2 Only schematically shown in the figure, without tooth profile or chain link. Of course, an intermediate gear can also be used to replace a chain or toothed belt.

[0049] exist Figure 31 shows a part of the components arranged in the deflection region 7 of the passenger transport device 1. In particular, a part of the support structure 37 and the main drive shaft 27 are shown, to which the drive sprocket 15, the two drive wheels 13 and the handrail drive sprocket 29 are fastened. Figure 3 Another embodiment of the speed monitoring device 41 is also shown.

[0050] Figure 3 The speed monitoring device 41 shown in FIG. Figure 1 4. These are in particular the speed sensor 43, the torsionally rigid, deformable coupling 51 and the pinion 47, which are arranged in the first support part 71 of the support 61 in the manner already described. The first support part 71 is connected to the second support part 73 of the support 61 via an adjustable connection point 79. The second support part 73 is in turn fixedly fastened to the support structure 37.

[0051] As in Figure 2 As in the example in, Figure 3 The speed monitoring device 41 shown in FIG. 4 has a detection device 49, which has an annular, split adapter 63. Instead of an integrally formed shoulder, the shoulder is screwed onto the shaft shell surface 39 of the main drive shaft 27 by means of a screw 121. Figure 2 In contrast, the connection for transmitting rotation is achieved by the pinion 47 directly engaging in the meshing part of the acquisition device 63. In this way, additional elements, such as chains or toothed belts, can be avoided. A protective housing 81 can be provided to protect the speed monitoring device 41 from environmental influences, in particular from dust. The protective housing 81 shown in dotted lines encloses the entire speed monitoring device 41 and a portion of the main drive shaft 27 that passes through the protective housing 81. In order to be able to assemble the protective housing 81, the protective housing is designed to be divided into two parts and can be separated at the marked separation position 119. The protective housing 81 is preferably also fixed to the first bracket part 71 or the second bracket part 73. Of course, the protective housing 81 does not have to be designed to be enclosed. The protective housing 81 can also cover only a portion of the speed monitoring device 41. For example, such a protective housing 81 only includes the upper part of the protective housing 81 shown.

[0052] Figure 4 and Figure 5 The two illustrate another design of the present invention, and are therefore described together below. Figure 3 As shown, the pinion 47 can directly engage with the meshing portion 53 of the acquisition device 49. In order to more clearly highlight the acquisition device 49 of the speed monitoring device 41, the main drive shaft 27 and the handrail drive sprocket 29 fixedly connected to the main drive shaft are shown in dotted lines.

[0053] The collecting device 49 is also two-part and has a first half ring 65 and a second half ring 67. On the inner surface 123 of the ring formed by the two half rings 65, 67, a toothing 53 is formed, into which the pinion 47 can engage and the rotational movement of the collecting device 49 can be collected. The two half rings 65, 67 are fixed to the side surface 69 of the handrail sprocket 29 by means of fastening screws 121. Due to the built-in toothing 53, the most sensitive parts are already well protected from dust. In order to improve the protection, an annular dirt wiper 125 can also be provided.

[0054] exist Figure 4 and Figure 5 In the embodiment of the invention, the speed monitoring device 41 further comprises a component 87, which comprises: a support 61 having a first support part 71 and a second support part 72, a rotation speed sensor 43, a pinion 47 and a torsionally rigid coupling 51. Figure 5 It can be clearly seen that the two bearing points 55, 57 are arranged between the pinion 47 and the torsionally rigid coupling 51. As a result, bending moments on the pinion shaft 127 of the pinion 47 are also supported via the support 61, so that the speed sensor 43 is not subjected to bending moments.

[0055] Although the present invention has been described by presenting a specific embodiment, it is obvious that many other implementation variations can be proposed based on the knowledge of the present invention. For example, for redundancy reasons, an additional speed sensor 43 is engaged with the detection device 49 in a rotationally transmitting manner in the structure according to the present invention.

Claims

1. A speed monitoring device (41) for measuring the number of revolutions or rotational speed of a main drive shaft (27) of a personnel transport device (1), the speed monitoring device comprising: at least one speed sensor (43) with an input shaft (45); A detection device (49) configured so that it can be arranged on a shaft shell surface (39) of a main drive shaft (27) of a personnel transport device (1) whose number of revolutions needs to be measured; and a bracket (61), the bracket being used to fix the rotation sensor (43) at a position fixed relative to the rotation axis of the acquisition device (49), in, The speed monitoring device (41) further comprises a pinion gear (47) which is mechanically connected to the input shaft (45) so as to transmit the rotation of the pinion gear (47) to the input shaft (45). The collecting device (49) has a meshing portion (53) which can be coupled to the pinion (47) in a rotationally transmitting manner, and The pinion (47) is rotatably supported in the support (61) in two bearing locations (55, 57); The invention is characterized in that the collecting device (49) is designed to be fixed on the side surface (69) of the shoulder of the main drive shaft (27), and The collecting device (49) comprises an annular, split adapter (63), and the toothing (53) is arranged on an inner surface (123) of the collecting device (49).

2. The speed monitoring device (41) according to claim 1, wherein: The rotationally transmitting coupling is achieved by direct meshing of the pinion (47) in the toothing (53) of the collecting device (49).

3. The speed monitoring device (41) according to claim 1, wherein: The rotation-transmitting connection between the pinion (47) and the toothing (53) is achieved via a positive-locking transmission element (59).

4. The speed monitoring device (41) according to any one of claims 1 to 3, wherein: A torsionally rigid, deformable coupling (51) is provided between the pinion (47) and the input shaft (45).

5. The speed monitoring device (41) according to any one of claims 1 to 3, wherein: The support (61) is designed in at least two parts, the speed sensor (43) is arranged on a first support part (71) of the support (61), and the pinion (47) is rotatably supported in bearing positions (55, 57), the second support part (73) of the support (61) has a fixing area (75) which is provided for fixing the support (61) to a fixed structural component (77) of the passenger transport device (1), the first support part (71) and the second support part (73) being adjustably connected to each other via a connecting point (79).

6. The speed monitoring device (41) according to any one of claims 1 to 3, wherein: The speed monitoring device comprises a protective housing (81) that can be fixed on a bracket (61), and the protective housing (81) covers the pinion (47), the rotation speed sensor (43) and the acquisition device (49).

7. The speed monitoring device (41) according to any one of claims 1 to 3, wherein: The speed monitoring device comprises a protective housing (81), which can be fixed on a bracket (61) and encloses a pinion (47), a rotation speed sensor (43) and a collection device (49).

8. A personnel transport device (1), designed as an escalator or a moving walkway, characterized in that: The passenger transport device (1) comprises a speed monitoring device (41) according to any one of claims 1 to 7, wherein a collecting device (49) of the speed monitoring device is fixed on a shaft shell surface (39) of a main drive shaft (27) of the passenger transport device (1), and a component (87) is fixedly fixed in position on a structural component (77) of a supporting structure (37) of the passenger transport device (1), the component comprising at least a bracket (61) of the speed monitoring device (41), a speed sensor (43) and a pinion (47), and the main drive shaft (27) is also rotatably supported in the supporting structure (37).

9. The personnel transport device (1) according to claim 8, wherein: The passenger transport device comprises a control device (93) and / or a signal transmission device (91) to an external data processing device (95), and the signal generated by the speed sensor (43) is transmitted to the control device (93) and / or the signal transmission device (95) continuously or in discrete time segments.

10. The personnel transport device (1) according to claim 9, wherein: A digital avatar data set (101) is provided in parallel with the passenger transport device (1), wherein the digital avatar data set virtually reflects the passenger transport device (1), and the signals generated by the speed sensor (43) can be transmitted to the digital avatar data set (101) via a signal transmission device (93), and these signals are processed by combining the data of the digital avatar data set (101), so that the dynamic process of the passenger transport device (1) in operation can be simulated and displayed in real time with the help of the digital avatar data set (101).

11. A method for installing a speed monitoring device (41) according to any one of claims 1 to 7 in a passenger transport device (1) designed as an escalator or a moving walkway, characterized in that: A detection device (49) is fixed on a side surface (69) of a shoulder of a main drive shaft (27) of a personnel transport device (1), wherein the detection device has a toothing (53) arranged on an inner surface (123), and a component (87) is fixed in a fixed position adjacent to the main drive shaft (27) on a structural component (77) of a support structure (37) of the personnel transport device (1), wherein the main drive shaft (27) is rotatably supported in the support structure (37), and the component (87) comprises at least a bracket (61) of a speed monitoring device (41), a speed sensor (43) and a pinion (47).

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