main drive shaft or steering shaft of an escalator or moving walk

Abstract

The invention relates to an adjusting ring (71) for a moving walk or escalator (1), having a hollow-cylindrical ring body (75) and at least one adjusting screw (73). The adjusting ring is designed such that the outer diameter (D RA ) of the ring body (75) is greater than the inner ring diameter (D LAI ) of an outer ring (91) of an adjacently arranged rolling bearing (51) in the assembled state. Furthermore, the adjusting ring (71) has at least one ring groove (81) concentrically arranged to the inner diameter (D RI ) in a ring side face (83) of the ring body (75) which in the assembled state is directed towards the rolling bearing (51).

Description

Technical Field

[0001] This invention relates to an adjusting ring and an escalator or moving walkway having the adjusting ring. Background Technology

[0002] In further explanation, the description of escalators should also include moving walkways, and the description of steps should also include moving walkway trays.

[0003] The steps of an escalator are fixed to two conveyor chains, forming a circulating step belt together with these chains. This step belt is driven by a pair of sprockets at each end of the escalator. One pair of sprockets belongs to the drive station and drives and steers the step belt, while the other pair of sprockets is part of the turning station. Alternatively, a turning arc rail can be used in the turning station instead of the aforementioned pair of sprockets, thus requiring only one pair of sprockets in the drive station.

[0004] In escalators or moving walkways, the main drive shaft is installed at the head of the upper escalator, and the previously mentioned pair of conveyor chains are part of this main drive shaft. The main drive shaft is supported at both ends in load-bearing structures. This support scheme should be implemented as simply as possible, because if the bearings fail, the main drive shaft must be removed. Although the structure of the main drive shaft is made as lightweight as possible, its weight can still reach 500 kg.

[0005] The main drive shaft drives the steps or trays guided on the track. To achieve a high load-bearing capacity, shape stability, and weight optimization, the main drive shaft is designed as a hollow shaft structure. This type of main drive shaft has a fixed shaft body supported within the escalator's load-bearing structure. A hollow shaft is arranged around this shaft body, with a pair of drive sprockets disposed thereon. The hollow shaft is rotatably supported on the shaft body by rolling bearings. The shaft body supporting the hollow shaft is typically screwed fixedly onto the load-bearing structure. This structure is described, for example, in EP1616834B1.

[0006] If a steering shaft with a transmission sprocket pair is installed in the steering station, it can be constructed in the same way as the main drive shaft. If the steering station is also used as a tensioning station for the step belt, the shaft is not rigid but connected to the load-bearing structure via linear guides mounted on both sides. Furthermore, a mechanism (spring, main shaft) is required to adjust the desired tension.

[0007] If a rolling bearing malfunctions, extensive disassembly and reassembly are required, often necessitating its longitudinal movement to the end of the shaft for removal and reinstallation. For ease of maintenance, and especially given the size of the rolling bearing and the very limited available space, it is not pressed into a hollow shaft or clamped to the shaft body. Instead, the rolling bearing is secured to the shaft body by means of an adjusting ring mounted on the shaft to prevent axial displacement.

[0008] Rolling bearings are typically made of high-hardenability steel, which is not very corrosion-resistant and therefore rusts quickly. One type of steel used is, for example, 100Cr6 (material number 1.3505), which has a carbon content of approximately 1% and a chromium content of approximately 1.5%. Other types of steel are also used, such as 100CrMnSi6-4 and 100CrMo7, in which the alloying elements manganese (Mn) and molybdenum (Mo) help improve hardenability.

[0009] Because escalators and moving walkways can be exposed to significant amounts of dirt and moisture depending on their location and operating conditions, damp dirt can accumulate in the rolling bearing area, and rust can form between the rolling bearing and the hollow shaft or shaft body, making it nearly impossible to remove the rolling bearing for replacement. Furthermore, if dirt enters the rolling bearing area, severe wear can occur in bearings that are only grease-lubricated and not sealed. Summary of the Invention

[0010] Therefore, the object of the present invention is to provide a simple and efficient protection for rolling bearings from dust and moisture, which is inexpensive and allows for at least equally simple assembly or disassembly of the rolling bearings.

[0011] This objective is achieved by an adjusting ring having a hollow cylindrical annular body and at least one adjusting screw. The adjusting screw is arranged in a threaded hole that passes through the annular body and terminates at the inner diameter of the annular body. Of course, the adjusting ring may also have multiple threaded holes, in which adjusting screws are arranged respectively. Preferably, these threaded holes in the annular body extend radially about the central longitudinal axis of the annular body and are arranged with the same angular inertia.

[0012] The inner diameter of the annular body is coordinated with the protruding shaft of the main drive shaft or steering shaft of the escalator or moving walkway in its assembled state. In other words, the inner diameter of the hollow cylindrical annular body is large enough that it can be pushed past the shaft without effort. In this case, the inner diameter can have sufficient clearance relative to the diameter of the shaft.

[0013] To protect the rolling bearing from environmental influences, the outer diameter of the annular body is larger than the inner diameter of the outer ring of the rolling bearing adjacent to it in the assembled state. This cover effectively protects the rolling element area of ​​the rolling bearing. Additionally, at least one annular groove, co-centered with the inner diameter, is arranged in the annular side face of the annular body pointing towards the rolling bearing in the assembled state. The annular groove is arranged in partitions where, when the main drive shaft rotates, there is relative movement between the surface of the annular groove and the adjacent surface of the rolling bearing and / or hollow shaft. Here, the annular groove can act as a labyrinth seal, effectively mitigating the intrusion of liquids and dirt. Over time, fibrous dirt such as dust becomes trapped in the annular groove, forming a felt ring that effectively prevents further intrusion of dirt and dust. This is aided by the lubricant in the bearing, which holds the fibrous dirt together and prevents liquid penetration.

[0014] Since the adjusting ring is used to prevent axial displacement of the rolling bearing, it is pushed fully into the rolling bearing and then the adjusting screw is tightened. To avoid friction between the outer ring (the portion of the rolling bearing that moves relative to the side face of the adjusting ring) and the side face, a small distance must exist between the adjusting ring and the outer ring of the rolling bearing in the assembled state. This distance can be achieved, for example, by using a very narrow mating piece arranged on the shaft between the inner ring of the rolling bearing and the adjusting ring.

[0015] Instead of this mating piece, in one design of the adjusting ring, a protruding ring protrusion can be constructed in the inner diameter region of the annular body. This protrusion projects from the side face of the ring containing the ring groove, thus predetermining the distance between the side face of the ring and the adjacent outer ring of the rolling bearing. Preferably, the outer diameter of the protrusion is smaller than the inner diameter of the outer ring of the rolling bearing arranged adjacent to it in the assembled state.

[0016] In another design of the adjusting ring, the smaller groove diameter of the ring groove can be larger than the inner diameter of the outer ring of the adjacent rolling bearing in the assembled state. This achieves the aforementioned sealing function of the adjusting ring in the region of the outer ring, or even in the end face region of the hollow shaft.

[0017] Of course, the formation of a seal by fibrous fouling is not absolutely necessary. A sealing element can be installed during the assembly of the adjusting ring, which surrounds and seals the gap between the adjusting ring and the adjacent rolling bearing through a predetermined distance. For this purpose, the ring groove can be coordinated with the annular sealing element in terms of its groove diameter and cross-section. In this case, the sealing element is arranged in the ring groove. In the installed state, the sealing element protrudes from the ring groove with a predetermined interference fit. Here, the interference fit and distance are coordinated to seal the gap on the one hand, and prevent excessive wear on the sealing element in the protruding area on the other. The degree of sealing tightness set here depends on the material properties of the sealing material and the surface properties of the hollow shaft or outer ring of the rolling bearing relative to the moving surface of the adjusting ring or sealing element.

[0018] In another design of the adjusting ring, the ring groove may have an undercut, through which an annular groove protrusion is formed in the material of the annular body. This groove protrusion is provided to secure the sealing element inserted into the ring groove, preventing the sealing element from axially dislodging from the ring groove.

[0019] The adjusting ring, ready for assembly, can have all the necessary adjusting screws and sealing elements inserted into the groove.

[0020] The sealing element can be made of different materials, such as non-ferrous metals, which have excellent sliding properties. Of course, sealing elements made of composite materials can also be used. The sealing element is preferably an O-ring made of polymer material because such sealing elements exhibit good sealing performance and are also very inexpensive.

[0021] In another design of the adjusting ring, a lubrication hole with an inlet and an outlet can be constructed within the annular body. The outlet of the lubrication hole opens into the side surface of the ring between the annular groove and the inner diameter of the annular body. Through the lubrication hole, lubricant, such as grease or oil, can be supplied to the adjacent rolling bearing. Additionally, the cavity between the shaft, rolling bearing, adjusting ring, and seal can also be filled with lubricant, preferably grease. This prevents the ingress of liquids, moisture, and dirt, and also prevents the formation of condensate in the cavity due to temperature changes. This prevents corrosion of the rolling bearing, significantly simplifying future bearing replacement and increasing bearing life.

[0022] The inlet of the lubrication hole can be arranged, for example, on the side of the annular body opposite to the annular side surface.

[0023] The inlet of the lubrication port is preferably threaded. This allows, for example, a conventional lubrication nozzle with a check valve to be fitted at the inlet, preventing lubricant from flowing out of the lubrication port again after it has been supplied. Alternatively, the threaded inlet port can be sealed with a simple threaded plug, such as a short hexagonal head screw with a sealing ring.

[0024] It is possible that lateral lubricant supply becomes difficult due to the adjacent support structure. To simplify lubricant supply, a so-called 90° lubrication nozzle can be fitted into the thread. Alternatively, the inlet of the lubrication hole can be arranged on the surface of the annular body defined by its outer diameter.

[0025] As mentioned at the outset, moving walkways or escalators have a drive station and a turning station, wherein the turning station is typically used not only for turning but also for tensioning the step belt or support belt. The turning station may have a turning shaft. The drive station has a main drive shaft. The turning shaft or main drive shaft includes: a shaft body, a hollow shaft (with a transmission sprocket arranged thereon) disposed on the shaft body, and at least one rolling bearing disposed between the hollow shaft and the shaft body. Moving walkways or escalators also have at least one adjusting ring, corresponding to one of the design variations described above. This adjusting ring is fixed to the shaft body adjacent to the rolling bearing by means of at least one adjusting screw, wherein the groove of the adjusting ring points towards the rolling bearing.

[0026] An annular sealing element can be inserted into the groove of the adjusting ring, protruding from the groove with a predetermined interference fit. In this case, the distance between the rolling bearing and the adjusting ring, related to the predetermined interference fit, is predetermined. As mentioned above, this distance can be predetermined by the width of the mating piece or by the annular protrusion protruding by an appropriate amount. Attached Figure Description

[0027] Embodiments of the present invention are described below with reference to the accompanying drawings; however, the drawings and description should not be considered as limitations on the present invention. Wherein:

[0028] Figure 1 A longitudinal sectional side view schematically shows an escalator with a load-bearing structure, in which a running track and a rotating step are arranged between a first turning area and a second turning area.

[0029] Figure 2 Shown in enlarged diagram Figure 1 The given cross-section AA;

[0030] Figure 3 Shown in enlarged diagram Figure 2 The partial view X given in the image;

[0031] Figure 4 Shown in enlarged diagram Figure 3The partial view Y given in the first design; and

[0032] Figure 5 Shown in enlarged diagram Figure 3 The partial view Y given in the second design.

[0033] These accompanying drawings are schematic only and are not drawn to scale. In different drawings, the same reference numerals denote the same or equivalent features. Detailed Implementation

[0034] Figure 1 An escalator 1 with two guardrails 3 is shown in a longitudinal sectional side view, where only one guardrail 3 is visible in the longitudinal section. A handrail 5 is arranged in a circumferential manner on each guardrail 3. Furthermore, the escalator 1 has a load-bearing structure 7, shown in outline, which supports the guardrails 3. Each guardrail 3 has a base plate 9, between which laterally guided steps 11 are arranged in a circumferential manner. The escalator 1 connects a first floor E1 and a second floor E2. The running rollers 13 of the steps 11 travel on running rails 15, 17, 19, and 21 connected to the load-bearing structure 7 of the escalator 1. The load-bearing structure 7 can be a frame structure, a carrier, a foundation, etc.

[0035] The steps 11 are connected to each other by a conveyor chain (not shown) to form a rotating step belt 23, which is only partially shown for better overview. The carrying structure 7 has a first turning area 25 with a turning station 27 in the region of the first floor E1, and a second turning area 29 with a drive station 31 in the region of the second floor E2, in which the step belt 23 turns between the traveling section V and the returning section R. In the illustrated embodiment, based on the given arrow directions of the traveling section V and the returning section R, the user is transported from the second floor E2 to the first floor E1. Of course, it is also possible for the escalator 1 to run in the opposite direction. To turn the step belt 23, a turning shaft 33 is rotatably arranged in the first turning area 25, and a main drive shaft 35 is rotatably arranged in the second turning area 29. The main drive shaft 35 is connected to the drive pinion 39 of the drive unit 37 via a drive chain 41 in a manner capable of transmitting rotation. Of course, the drive unit 37 can also be designed differently and can be arranged in different parts of the escalator 1 to drive the step belt 23.

[0036] Figure 2 The drive station 31 is shown in a magnified view. Figure 1 The cross section AA is given in the text. Figure 3 Shown in enlarged diagram Figure 2 The image shows a partial view, X. Two images are presented below.

[0037] exist Figure 2The cutting plane AA shown also intersects with the main drive shaft 35 arranged in the drive station 31. To achieve a structure with high load-bearing capacity, shape stability, and optimized weight, the main drive shaft 35 is designed as a hollow shaft. The main drive shaft 35, designed in this way, has a fixed shaft body 47 supported in the load-bearing structure 7 of the escalator 1. Disc flanges 55 and cup-shaped discs 57 serve as connecting elements to the load-bearing structure 7 at both ends of the shaft body 47. The shaft body 47 is typically securely screwed onto the load-bearing structure 7 by means of the flanges 55 and the cup-shaped discs 57. A hollow shaft 49 with two conveyor sprockets 43 fixed thereon is arranged on the shaft body 47. In other words, the shaft body 47 is arranged in the holes 59 of the hollow shaft 49. The conveyor chain 12 of the step belt 23 is guided and steered by the conveyor sprockets 43, wherein the steps 11 are arranged between the conveyor chains 12.

[0038] The hollow shaft 49 and the transmission sprocket 43 connected to each other via the hollow shaft 49 are rotatably supported on the shaft body 47 by means of two rolling bearings 51. According to the design, the rolling bearings 51 are arranged in recesses 61 provided for this purpose in the transmission sprocket 43 or the hollow shaft 49 (see...). Figure 3 )middle.

[0039] To prevent the rolling bearing 51 from shifting out of the recess 61 during operation, the rolling bearing is secured with adjusting rings 71 to prevent axial displacement. These adjusting rings are adjacent to the rolling bearing 51 and fixed to the shaft 47 by adjusting screws 73. The adjusting ring 71 has a hollow cylindrical annular body 75. The adjusting screw 73 is arranged in a threaded hole 79 in the annular body 75. To allow the adjusting screw to be tightened toward the shaft 47, the threaded hole 79 in the annular body 75 is designed to be continuous and terminate at the inner diameter D of the annular body 75. RI Location. The inner diameter D of the annular body 75. RI With shaft 47 or its outer diameter D AA This design allows the adjusting ring 71 to be easily pushed past the shaft 47, while still maintaining a relatively small radial clearance (sliding fit) with the shaft 47. To secure the tightened adjusting screw 73, a lock nut 77 can be provided as shown. Alternatively, other securing methods, such as anaerobic adhesive, can be used to tighten the adjusting screw 73 in the threaded hole 79 to prevent loosening.

[0040] As in Figure 1 and Figure 2As mentioned in the description, the escalator 1 of this embodiment has a main drive shaft 35 and a steering shaft 33. The main drive shaft and the steering shaft are designed to be substantially the same, so that the same components can be used for both shafts 33 and 35. Since the main drive shaft 35 drives the steps 11 or the step belt 23, the only difference between the main drive shaft and the steering shaft 33 is the drive gear ring 45, which is laterally arranged on one of the two transmission sprockets 43 and screwed onto the transmission sprocket.

[0041] like Figure 3 As shown, the adjusting ring 71 according to the invention has at least one annular groove 81. Variations of this annular groove 81 and other special constructions of the adjusting ring 71 are described in... Figure 4 and Figure 5 As shown in the figure, Figure 4 and Figure 5 Shown in enlarged view Figure 3 The partial view Y is given in the image.

[0042] like Figure 4 As shown, the outer diameter D of the annular body 75 RA The outer inner diameter D of the outer ring 91 of the rolling bearing 51 arranged adjacent to each other in the assembled state is greater than that of the outer ring. IAI Therefore, in the assembled state, the rolling bearing 51 is covered by the annular body 75 of the adjusting ring 71 at least up to its rolling elements 93 on the end side. Furthermore, in the annular side surface 83 of the annular body 75 pointing towards the rolling bearing 51 in the assembled state, at least one element with an inner diameter D is arranged... RI The annular grooves 81 are arranged concentrically. In other words, the annular side surface 83 may have not only one annular groove 81 as shown, but also two or more annular grooves 81, which are arranged concentrically with each other and with respect to the inner diameter D of the annular body 75. RI Arranged in the same central location.

[0043] In addition, such as Figure 4 and Figure 5 As shown, the smaller groove diameter D of the annular groove 81 KN The outer inner diameter D of the outer ring 91 of the rolling bearing 51 arranged adjacent to each other in the assembled state is greater than that of the outer ring. LAI Therefore, the sealing section of the annular groove 81 is inserted into the area of ​​the outer ring 91, allowing dirt to be trapped in the area of ​​the annular groove 81. To enhance the protective effect, in this embodiment, a sealing element 85 is arranged in the annular groove 81. Thus, dirt and moisture can no longer enter the area of ​​the rolling element 93. As shown, the sealing element 85 can be an O-ring made of a soft, elastic polymer material.

[0044] The annular groove 81 has a groove diameter D KN D GNIts groove cross-section is coordinated with the annular sealing element 85, such that the sealing element is inserted into the annular groove 81 with a predetermined interference fit U. R It extends from the annular groove 81.

[0045] Furthermore, the inner diameter D on the annular body 75 RI In the region, an annular protrusion 87 is constructed, which extends from the annular side surface 83 containing the annular groove 81 at a predetermined distance S. B Protrusion. The outer diameter D of the protrusion of the annular protrusion 87. B The outer inner diameter D of the outer ring 91 of the rolling bearing 51 arranged adjacent to each other in the assembled state is smaller than that of the outer ring. LAI .

[0046] To achieve a sufficient seal to prevent moisture ingress, the sealing element 85 must be pressed against the adjacent side surface 95 of the outer ring 91 of the rolling bearing with a predetermined force. This pressing... Figure 4 The sealing element 85 is symbolically shown by being inserted into the outer ring 91. However, in reality, the side surfaces of the outer ring 91 are flat and as smooth as possible, so that the sealing element 85 merely rests against the side surface 95 and is pressed together between the adjusting ring 71 and the rolling bearing 51. Due to the soft, elastic material properties of the sealing element 85, it generates an interference fit U. R and distance S B The force is related to the difference between them. In other words, the ring protrusion 87 predetermines the distance S between the rolling bearing 51 and the adjusting ring 71. B This distance is based on the preset force or sealing tightness and the predefined interference amount U. R Set the dimensions accordingly.

[0047] In addition, such as Figure 4 As shown, a lubrication hole 89 with an inlet 97 and an outlet 99 is constructed in the annular body 75. The outlet 99 is located in the annular groove 81 and the inner diameter D. RI The annular side surface 83 of the annular body 75 is connected to the lubrication hole 89. Lubricant, such as grease or oil, can be supplied to the adjacent rolling bearing 51 through the lubrication hole 89. Additionally, the cavity 101 between the shaft 47, rolling bearing 51, adjusting ring 71, and sealing element 85 can be filled with lubricant, preferably grease. This also prevents the ingress of liquids, moisture, and dirt, and also prevents the formation of condensate in the cavity due to temperature changes. This prevents corrosion of the rolling bearing 51 in the recess 61, thereby significantly simplifying subsequent bearing replacement. To achieve better distribution of lubricant within the cavity 101, a lubrication groove 103 can also be constructed in the annular body 75 (see...). Figure 5The construction of the lubrication groove is adapted to the existing production feasibility of the adjusting ring 71 and the properties of the lubricant; therefore, further explanation regarding the ideal cross-sectional distribution of the lubrication groove 103 is omitted here. The inlet 97 of the lubrication hole 89 is arranged on the side of the annular body 75 opposite to the annular side face 83. The inlet 97 of the lubrication hole 89 has a thread 107 into which a connector (not shown) of the lubricant spray gun can be screwed. To prevent the filled lubricant from flowing out, a screw with a sealing ring can be screwed in as a plunger after the connector is removed.

[0048] Figure 5 It also shows Figure 3 The partial view Y shown is shown, but in an alternative embodiment, an adjusting ring 71 is included. The annular groove 81 of the adjusting ring has an undercut 111 through which an annular groove protrusion 109 is formed in the material of the annular body 75. This groove protrusion 109 is configured to secure a sealing element 85 inserted into the annular groove 81, preventing the sealing element from axially dislodging from the annular groove 81. Furthermore, an inlet 97 of a lubrication hole 89 is arranged in the annular body 75 with an outer diameter D. RA On the defined surface. Inlet 97 is also equipped with a conventional lubrication nozzle 105 with a check valve, allowing maintenance personnel to easily replenish lubricant when needed without first removing the sealing screw.

[0049] although Figure 1 An escalator 1 with step belt 23 is shown, but it is evident that the invention is also applicable to moving walkways with pallet belts. Furthermore, it is evident that different configurations of the annular groove 81 and arrangements of the entrance 97 can be combined with each other.

[0050] Finally, it should be noted that terms such as "having" or "comprising" do not exclude other elements or steps, and terms such as "a" or "an" do not exclude multiple. Furthermore, it should be pointed out that features or steps described with reference to one of the above embodiments can also be used in combination with other features or steps of the other embodiments described above. Reference numerals in the claims should not be construed as limiting.

Claims

1. An automated walkway having a steering shaft (33) and / or a main drive shaft (35), the steering shaft and / or main drive shaft comprising at least one shaft body (47) and a rolling bearing (51) disposed on said shaft body (47), the automated walkway further comprising at least one adjusting ring (71) having a hollow cylindrical annular body (75) and at least one adjusting screw (73), wherein, An adjusting screw (73) is disposed in a threaded hole (79), the threaded hole being designed to penetrate the annular body (75) and terminate at the inner diameter (D) of the annular body (75). RI ) place, and The inner diameter (D) of the ring (75) RI The shaft (47) is arranged in an extended manner in the assembled state with respect to the main drive shaft (35) or steering shaft (33), and the rolling bearing (51) is fastened by an adjusting ring (71) to prevent axial displacement, the adjusting ring being adjacent to the rolling bearing (51) and fixed to the shaft (47) by means of an adjusting screw (73), characterized in that, The outer diameter (D) of the ring body (75) RA The outer inner diameter (D) of the outer ring (91) of the rolling bearing (51) arranged adjacent to the main drive shaft (35) or steering shaft (33) in the assembled state is larger than that of the outer ring of the rolling bearing (51). LAI ); In the annular body (75), in the assembled state, on the annular side surface (83) pointing towards the rolling bearing (51), at least one part is constructed that corresponds to the inner diameter (D). RI )A ring groove (81) arranged in the same center; The inner diameter (D) on the ring (75) RI An annular protrusion (87) is constructed in the region of the annular groove (81), the annular protrusion extending from the annular side surface (83) containing the annular groove (81) at a predetermined distance (S). B The protrusion is highlighted in a manner that is consistent with the outer diameter (D) of the annular protrusion. B The outer diameter (D) of the outer ring (91) of the adjacent rolling bearing (51) in the assembled state is smaller than that of the inner outer ring of the bearing. LAI ); The annular groove (81) is coordinated with the annular sealing element (85) in terms of its groove diameter and its groove cross-section, the sealing element being configured to: be arranged in the annular groove (81) and, in the installed state, have a predetermined interference fit (U) R ) extends from the annular groove (81); and A lubrication hole (89) with an inlet (97) and an outlet (99) is constructed in the annular body (75), wherein the outlet (99) of the lubrication hole is located in the annular groove (81) and the inner diameter (D). RI The passage between the two sides is into the annular side surface (83).

2. The automatic walkway according to claim 1, wherein, The smaller groove diameter (D) of the annular groove (81) KN The outer diameter (D) of the outer ring (91) of the adjacent rolling bearing (51) in the assembled state is larger than that of the inner outer ring of the bearing. LAI ).

3. The moving walkway according to claim 1 or 2, wherein, The annular groove (81) has an undercut (111) through which an annular groove protrusion (109) is constructed in the material of the annular body (75), and the groove protrusion (109) is provided for fixing the sealing element (85) inserted into the annular groove (81) to prevent the sealing element from axially dislodging from the annular groove (81).

4. The moving walkway according to claim 1 or 2, wherein, The adjusting ring (71) has a sealing element (85).

5. The automatic walkway according to claim 4, wherein, The sealing element (85) is an O-ring made of polymer material.

6. The moving walkway according to claim 1 or 2, wherein, The inlet (97) of the lubrication hole (89) is located on the side of the annular body (75) opposite to the annular side surface (83).

7. The moving walkway according to claim 1 or 2, wherein, The inlet (97) of the lubrication hole (89) is arranged in the annular body (75) with an outer diameter (D). RA On the radial surface defined by ).

8. The moving walkway according to claim 1 or 2, wherein, The inlet (97) of the lubrication hole (89) has a thread (107).

9. The moving walkway according to claim 1 or 2, wherein, An annular sealing element (85) is inserted into the annular groove (81) of the adjusting ring (71), the sealing element having a predetermined interference fit (U). R The rolling bearing (51) extends from the ring groove (81), and a predetermined interference fit (U) is given between the rolling bearing (51) and the adjusting ring (71). R The associated distance (S) B ).

10. An escalator (1) having a steering shaft (33) and / or a main drive shaft (35), the steering shaft and / or the main drive shaft comprising at least one shaft body (47) and a rolling bearing (51) arranged on the shaft body (47), the escalator (1) further comprising at least one adjusting ring (71) having a hollow cylindrical annular body (75) and at least one adjusting screw (73), wherein, An adjusting screw (73) is disposed in a threaded hole (79), the threaded hole being designed to penetrate the annular body (75) and terminate at the inner diameter (D) of the annular body (75). RI ) place, and The inner diameter (D) of the ring (75) RI The shaft (47) is arranged in an extended manner in the assembled state with respect to the main drive shaft (35) or steering shaft (33), and the rolling bearing (51) is fastened by an adjusting ring (71) to prevent axial displacement, the adjusting ring being adjacent to the rolling bearing (51) and fixed to the shaft (47) by means of an adjusting screw (73), characterized in that, The outer diameter (D) of the ring body (75) RA The outer inner diameter (D) of the outer ring (91) of the rolling bearing (51) arranged adjacent to the main drive shaft (35) or steering shaft (33) in the assembled state is larger than that of the outer ring of the rolling bearing (51). LAI ); In the annular body (75), in the assembled state, on the annular side surface (83) pointing towards the rolling bearing (51), at least one part is constructed that corresponds to the inner diameter (D). RI )A ring groove (81) arranged in the same center; The inner diameter (D) on the ring (75) RI An annular protrusion (87) is constructed in the region of the annular groove (81), the annular protrusion extending from the annular side surface (83) containing the annular groove (81) at a predetermined distance (S). B The protrusion is highlighted in a manner that is consistent with the outer diameter (D) of the annular protrusion. B The outer diameter (D) of the outer ring (91) of the adjacent rolling bearing (51) in the assembled state is smaller than that of the inner outer ring of the bearing. LAI ); The annular groove (81) is coordinated with the annular sealing element (85) in terms of its groove diameter and its groove cross-section, the sealing element being configured to: be arranged in the annular groove (81) and, in the installed state, have a predetermined interference fit (U) R ) extends from the annular groove (81); and A lubrication hole (89) with an inlet (97) and an outlet (99) is constructed in the annular body (75), wherein the outlet (99) of the lubrication hole is located in the annular groove (81) and the inner diameter (D). RI The passage between the two sides is into the annular side surface (83).

11. The escalator according to claim 10, wherein, The smaller groove diameter (D) of the annular groove (81) KN The outer diameter (D) of the outer ring (91) of the adjacent rolling bearing (51) in the assembled state is larger than that of the inner outer ring of the bearing. LAI ).

12. The escalator according to claim 10 or 11, wherein, The annular groove (81) has an undercut (111) through which an annular groove protrusion (109) is constructed in the material of the annular body (75), and the groove protrusion (109) is provided for fixing the sealing element (85) inserted into the annular groove (81) to prevent the sealing element from axially dislodging from the annular groove (81).

13. The escalator according to claim 10 or 11, wherein, The adjusting ring (71) has a sealing element (85).

14. The escalator according to claim 13, wherein, The sealing element (85) is an O-ring made of polymer material.

15. The escalator according to claim 10 or 11, wherein, The inlet (97) of the lubrication hole (89) is located on the side of the annular body (75) opposite to the annular side surface (83).

16. The escalator according to claim 10 or 11, wherein, The inlet (97) of the lubrication hole (89) is arranged in the annular body (75) with an outer diameter (D). RA On the radial surface defined by ).

17. The escalator according to claim 10 or 11, wherein, The inlet (97) of the lubrication hole (89) has a thread (107).

18. The escalator according to claim 10 or 11, wherein, An annular sealing element (85) is inserted into the annular groove (81) of the adjusting ring (71), the sealing element having a predetermined interference fit (U). R The rolling bearing (51) extends from the ring groove (81), and a predetermined interference fit (U) is given between the rolling bearing (51) and the adjusting ring (71). R The associated distance (S) B ).

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