EP3931142A2

EP3931142A2 - Truss section connection region

Info

Publication number: EP3931142A2
Application number: EP20704896.8A
Authority: EP
Inventors: David Krampl; Michael Matheisl; Richard Schütz; Robert Schulz; Thomas KOUKAL
Original assignee: Inventio AG
Current assignee: Inventio AG
Priority date: 2019-02-27
Filing date: 2020-02-18
Publication date: 2022-01-05
Anticipated expiration: 2040-02-18
Also published as: WO2020173753A2; KR20210129629A; CA3117425A1; CN113165850A; TW202045428A; US11913215B2; US20220145610A1; CN113165850B; AU2020227162A1; EP3931142B1; SG11202104198QA; BR112021008019A2; AU2020227162B2; WO2020173753A3

Abstract

The invention relates to a truss section (13, 15), which has a connection region (31) formed at the end faces of at least one of its two ends. The connection region (31) can be connected to the connection region (31) of another truss section (13, 15). The truss section (13, 15) contains, in each case, two upper belt sections (21A, 21B) and two lower belt sections (23A, 23B) which extend parallel to one another in the longitudinal direction of the truss section (13, 15) and are connected to one another by means of connecting struts (25) in such a way that they delimit a rectangular space (71). The upper belt sections (21A, 21B) and the lower belt sections (23A, 23B) have a tubular cross section, wherein in the connection region (31) the upper belt sections (21A, 21B) and the lower belt sections (23A, 23B) are configured so as to transition from the tubular cross section into an I-shaped cross section.

Description

Truss section connection area

The present invention relates to the design of a framework for a

Passenger transport system such as an escalator, a moving walk or the like.

Passenger transport systems are used to transport people, for example in buildings, between different height levels or within a constant height level. Escalators, which are also referred to as escalators, are, for example, regularly used to convey people in a building from one floor to another floor. Moving walks can be used to move people within a floor in a horizontal plane or in a plane that is only slightly inclined.

Passenger transport systems generally have a framework that serves as a load-bearing structure. The framework is designed to accommodate the

Static and dynamic forces, such as weight forces of transported people, acting by a drive of the passenger transport system

Passenger transport system to take up forces and the like and, for example, to pass them on to structures of the building receiving the people transport system. For this purpose, the passenger transport system can be stored and fastened to suitably designed support points on the structure. Depending on the area of use, the framework can for example extend over two or more levels or floors of the building and / or over shorter or longer distances within a constant floor within the building.

A lattice supported in the assembled state on the support points of the structure can be both movable and stationary components of the

Record passenger transport system. Depending on the design of the passenger transport system as an escalator or moving walk, such components can be designed, for example, as step belts, pallet belts, deflection axes, drive shafts, drive motors, gears, controls, monitoring systems, security systems, balustrades, comb plates, storage points, treadmills and / or guide rails. A truss is generally composed of a large number of load-bearing truss components connected to one another. Such truss components can, for example, so-called upper chords and lower chords as well as connecting struts connecting these chords to one another, such as cross struts, diagonal struts,

Include uprights and the like. Additional structures such as gusset plates, angle plates, retaining plates, oil pan plates, soffit plates, etc.

be provided.

In order to be able to guarantee sufficient stability and almost load-bearing capacity of the framework, the individual framework components must be connected to one another in a sufficiently stable manner. Usually the framework components are welded or riveted together for this purpose. As a rule, each individual

Truss components are welded together stable and load-bearing with other truss components of the truss.

Depending on where it is used, an escalator or a moving walk can have a considerable conveying length of 30 meters and more. From a certain catches respectively

Span of the framework, the angled profile rods disclosed in EP 0 345 525 A2 and commonly used for frameworks can lead to problems, for example in relation to the known torsional torsional buckling. In general, the risk for a girder to fail due to torsional torsional buckling becomes less, the closer the smallest and the largest geometrical moment of inertia of the associated cross-section approach. For this reason, the classic steel profiles are particularly at risk. In addition, the support of the wearer, the distance between the support points and its ability to withstand torsion are of great importance. Closed hollow profiles such as pipes have a particularly high resistance here.

With regard to this problem, for example, CN 202429846 U proposes a framework for a long escalator which has upper chords and lower chords with a tubular cross section. However, these long passenger transport systems and in particular their framework, can no longer be dated in one piece

Production site to be transported to the place of use. Such a framework therefore usually consists of at least two framework sections that have one

Connection area can be connected to one another. The connection area disclosed in CN 202429846 U has connection plates which are welded on the front side of the upper chord or lower chord and which are provided with screw holes. However, this construction has the disadvantage that the connecting plates either protrude into the cuboid space defined by the framework or protrude towards the surroundings. In the case of connecting plates protruding into the cuboid space, the usable cross-section of the framework with regard to the arrangement of guide rails, the handrail return and

Conveyor belt return massively reduced and with protruding connecting plates either impaired the aesthetics of the escalator or massively larger cladding parts are required to connect the connecting plates to the completed

Conceal passenger transport system. In addition, the flow of force in the connection area is massively deflected in this configuration, so that with high tensile forces in the lower chord the connection plates tend to buckle (membrane tension state) and high stress concentrations occur at the weld seams between the tubular cross-section of the lower chord and the connection plate.

The object of the present invention is to create a framework section of the aforementioned type, the connection area of which enables a maximum usable cross section of the cuboid area without increasing the overall cross section and ensures an optimized flow of force through the connection area.

This object is achieved by a truss section of a truss for a passenger transport system. This truss section has a connecting area which is formed on the front side at at least one of the two ends of the truss section. This connection area can be connected to the connection area of at least one further framework section. The truss section includes two upper chord sections and two lower chord sections, which extend parallel to one another in the longitudinal direction of the truss section and are connected to one another by connecting struts. The upper chord sections, lower chord sections and connecting struts, which are joined together to form the framework section, define a square-shaped space which, after assembly, is carried out against the surroundings

Cladding parts can be clad and in which other components of the passenger transport system such as guide rails, a conveyor belt (step belt or Pallet tape) and the like can be accommodated or arranged. In order to achieve greater stability compared to the usual angle profiles, the upper chord sections and the lower chord sections have a tubular cross section. Furthermore, in the connection area, the upper chord sections and the lower chord sections merge from the tubular cross-section into an I-shaped cross-section. Here, the connection area is not simply the flat end of the upper chord section or lower chord section, but extends from its end to the point at which the tubular cross section of the upper chord section or lower chord section has a constant shape over the longitudinal extent.

In other words, this configuration replaces the cavity of the tubular cross section in the connection area with lateral indentations of the I-shaped cross section. These indentations can then accommodate fastening means such as screws, rivets, pins, bolts and the like, with their central longitudinal axes preferably being parallel to the longitudinal direction of the

Truss section or to the upper chord sections and lower chord sections extend. Since the I-shaped cross-section is only present in the connection area, it is created by the tubular cross-section of the remaining upper chord section

or lower chord section is supported against torsional forces and is itself too short to fail due to torsional torsional buckling. In addition, by laying the fastening means in the indentations, a very direct flow of force from the

Connection area of the truss section to the permanently connected

Connection area of an adjoining truss section can be obtained.

With a view to torsional rigidity, profiles with symmetrical, tubular cross-sections are preferably selected for the upper chord sections and lower chord sections. In one embodiment, the upper belt section or the

Lower chord section on the tubular cross section of a square tube profile. As a result, there are planar surfaces on the upper chord section and the lower chord section, which significantly facilitate the manufacture of the truss section. In particular, this means that there are no complicated connection surfaces on the upper flange sections and

Connecting struts connecting lower chord sections are required as they are

would be necessary for round tubes, for example. In a variant of the connection area, the transition from the tubular cross section to the I-shaped cross section can be designed continuously by means of reshaping and / or molding. A deformation can take place, for example, by hammering, forging, pressing, deep drawing and the like, of the tubular upper chord section or lower chord section arranged in the connection area. Material-applying manufacturing processes such as 3D printing processes, build-up welding and the like can be used for forming.

In a further variant of the connection area, the transition from

tubular cross-section into the I-shaped cross-section through an end-side attachment of an I-profile piece to the tubular upper flange section or

Be designed discontinuously lower chord. An intermediate plate is preferably inserted between the tubular upper chord section or lower chord section and the I-profile piece in order to create a more harmonious transition for the flow of forces and the necessary load-bearing weld seam length between the parts.

Of course, the I-profile piece does not have to extend along its length

necessarily have a constant shape with regard to its cross section. The I-profile piece can also be shaped in such a way that it has a tubular cross-section at one end and an I-profile-shaped cross-section at the other end, with a design merging into one another being present in between. A component designed in this way can be produced, for example, by drop forging, casting, by means of 3D printing and the like and preferably connected to the tubular upper chord section or lower chord section using cohesive connection techniques such as welding, gluing, soldering and the like.

The I-profile piece has two flanges which are arranged in mutually parallel planes and which are connected to one another by a web. The I-profile piece can be made from commercially available profile steels, as defined, for example, in the German industrial standard DIN 1025. In order to improve the accessibility to the fastening means for tools such as a torque wrench, at least one of the two flanges can be arranged asymmetrically to the web or have a recess.

In order to ensure sufficient torsional rigidity of the upper and lower chords as well as sufficient assembly clearance for the fastening means, the length of the I-profile piece should correspond to one to five times the height of the tubular cross-section. However, it preferably corresponds to two to three times the height of the tubular cross section, particularly preferably two and a half times the height of the tubular cross section.

In one embodiment, a connecting plate is attached to the end of the upper chord or lower chord opening into the connecting area, the areal extent of which is arranged orthogonally to the longitudinal direction of the truss section on the I-shaped cross section in the connecting area. The truss sections can be connected to one another by means of connecting elements via the connecting plates. It goes without saying that a connecting plate does not necessarily have to be attached if other receptacles are to be provided for the

Fasteners are present. Such can for example be integrally formed receptacles for screws, rivets, pins, clamps and the like on the I-shaped cross section.

In a further embodiment, each of the connecting plates has bores for receiving the connecting elements, the central longitudinal axes of the bores being arranged parallel to the longitudinal direction of the framework section. As a result, the connecting elements are subjected to tensile stress in their longitudinal extension and not, for example, to shear or embedment. In the case of two connecting plates of successive truss sections, the hole plan of these holes should match.

As already mentioned, the trusses are usually clad, that is, panels are attached to the outside. Since these are quite large areas that are clad with very expensive materials such as stainless or coated steel sheets, the external dimensions of the framework should be in particular as regards its width and height, be kept as small as possible.

It is therefore particularly important that in the area of these surfaces of the framework that is to be clad, no parts such as the connecting plates protrude beyond the side surfaces of the upper chords and lower chords, preferably at least those facing away from the surroundings of the cuboid space, in the longitudinal direction

extending surfaces of the connecting plate and, if present, also the

Intermediate plate and the I-profile piece, with reference to the longitudinal extension, arranged flush with the corresponding side surfaces of the upper chord section or the lower chord section.

For vertical stabilization, the connecting plate of the upper chord section with the connecting plate of the

Be connected to each other by a vertical strut lower chord section. This allows the Uochplan of the two connecting plates to be fixed to each other, so that when the truss sections are joined together to form a truss

Adjustment work is required.

According to the invention, a truss of a passenger transport system has at least two truss sections of the aforementioned type, each adjoining truss sections being firmly connected to one another in the connection area by fastening means. Of course, a framework can also be in three or more

Truss sections be divided. Logically, the middle ones show

Truss sections each have the described, frontal connecting areas at both of their ends.

Preferred exemplary embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, with all figures

similar elements are provided with matching reference numerals. Neither the drawings nor the description are to be interpreted as restricting the invention. Show it:

Figure 1: a schematic side view of a passenger transport system with a framework, which consists of two framework sections

is composed; FIG. 2: the detail A indicated in FIG. 1 in an enlarged, three-dimensional representation, with a first variant of the connection area;

Figure 3A and 3B: the cross-sections indicated in Figure 2 through the

Connecting areas of the upper chord and the lower chord;

FIG. 4: using the upper belt, the connection area in a second

Variant in three-dimensional representation;

Figure 5A to 5C: the cross-sections indicated in Figure 4 through the

Connection area of the upper chord.

FIG. 1 shows a schematic side view of a passenger transport system 1 designed as an escalator or moving walkway, which connects a first floor E1 to a second floor E2 of a building 3. The passenger transport system 1 has a framework 11 which is composed of two framework sections 13, 15. The framework 11 is supported on the floors 5, 7 of the floors El, E2 of the building 3 via two support brackets 17 arranged at the end and spans the space 9 between the floors El, E2 like a bridge. As only indicated by the balustrade 19, takes the framework 11 load-bearing all other components of the passenger transport system 1 and supports them on the structure 3.

Since the illustrated truss 11 has two truss sections 13, 15, these are connected to one another by means of connecting areas 31 at the point designated as section A. Usually, releasable connecting means such as high-strength screws are used to connect the connection areas 31 of two truss sections 13, 15.

FIG. 2 shows detail A given in FIG. 1 in an enlarged, three-dimensional representation. A characteristic of trusses 11 is their structure made up of upper chords 21, lower chords 23 and connecting struts 25. This structure essentially comprises two truss side parts 27 arranged parallel to one another, 29, each of these truss side parts 27, 29 being formed from an upper chord, lower chord and connecting struts 25 arranged between them, arranged in a vertical plane. The truss side parts 27, 29 are connected to one another in the area of the lower chords 23 by further connecting struts 25 extending between these side parts 27, 29, so that the truss 11 has a U-shaped cross section. For reasons of stability, the two truss side parts 27, 29 are also at approximately half the height between the upper chord 21 and the lower chord 23 by further

Connecting struts 25 connected to one another. Depending on their arrangement in the framework 11, these connecting struts 25 are referred to as uprights, diagonal struts, cross struts, floor struts and the like in specialist circles.

In particular, FIG. 2 also shows the interconnected connecting areas 31 of the two truss sections 13, 15 in a first variant. The entire assembly, that is to say the ones firmly connected to one another by connecting means 47

Connection areas 3 l is usually referred to as a framework joint.

Since the truss 11 is subdivided into truss sections 13, 15, the upper chords 21 and lower chords 23 are also subdivided, so that subsequently the parts belonging specifically to a truss section 13, 15 as upper chord sections 21A, 21B, respectively

Lower chord section 23A, 23B are designated.

As already mentioned, each truss section 13, 15 has a connecting area 31 which is formed on one of the two ends of the truss section 13, 15 on the front side. For reasons of clarity, only the upper framework section 15 adjacent to floor 2 is described below.

The upper truss section 15 includes two upper chord sections 21B and two lower chord sections 23B, which extend parallel to one another in the longitudinal direction of the upper truss section 15 and are connected to one another by the connecting struts 25. By joining together to form the upper framework section 15

Upper chord sections 21B, lower chord sections 23B and connecting struts 25 a cuboid space 71 is marked out, which after the installation of the components of the passenger transport system 1 to be arranged in the cuboid space 71 can be clad with cladding parts (not shown) against the environment. To be compared To achieve greater stability in addition to the angle profiles that are commonly used, the upper chord sections 21B and the lower chord sections 23B have the tubular cross-section of a square tube. Furthermore, in the connection area 31 are

Upper chord sections 21B and the lower chord sections 23B merging from the tubular cross section into an I-shaped cross section.

In the first variant of the connection area 31 shown in FIG. 2, the transition from the tubular cross-section to the I-shaped cross-section is designed discontinuously by adding an I-profile 33 to the tubular upper chord section 21B or lower chord section 23B. An intermediate plate 37 is inserted between the tubular upper belt section 21B or lower belt section 23B and the I-profile piece 33 in order to create a more harmonious transition for the flow of force and the necessary load-bearing weld seam length between these parts.

The I-profile piece 33 has two flanges 41, 43 which are arranged in planes parallel to one another and which are connected to one another by a web 45. The I-profile 33 can be made from commercially available profile steels, as defined, for example, in the German industrial standard DIN 1025.

The lower truss section 13 adjoining the floor 1 is typically constructed like the upper truss section 15 described above.

In order to improve the accessibility to provided fastening means 47 such as screws, rivets and the like for tools such as a torque wrench, at least one of the two flanges 41, 43 can be arranged asymmetrically to the web 45 and / or have a recess 49.

In order to ensure sufficient torsional rigidity of the upper chords 21 and lower chords 23 as well as sufficient clearance for the fastening means 47, the length Li of the I-profile piece 33 should correspond to one to five times the height Hp of the tubular cross section of the lower chord 23 or upper chord 21. In the exemplary embodiment shown in FIG. 2, the length Li of the I-profile piece 33 corresponds to two and a half times the height Hp of the tubular cross section. In order that fastening means 47 can be mounted, there is a front end in the connection area 31 of the upper chord section 21A, 21B at the end of the I-profile 33

Connection plate 39 is provided. A connecting plate 35 also forms the end of the lower chord portion 23A, 23B. The connection plates 35, 39 thus adjoin the I-shaped cross-section of the I-profile 33 with their flat extension orthogonally to the longitudinal direction of the framework section 13, 15. The framework sections 13, 15 can be firmly connected to one another by means of the connecting elements 47 via these connecting plates 35, 39. The intermediate plate 37 forming the connecting area 31, the I-profile 33 and the connecting plate 35, 39 can be connected to the tubular upper chord section 21A, 21B or lower chord section 23A, 23B by means of material connection techniques such as welding, gluing, soldering and the like.

For vertical stabilization, the connecting plate 39 of the upper chord section 21A, 21B is connected to the connecting area 31 of the framework section 13, 15

Connecting plate 35 of lower chord section 23A, 23B connected to one another by a vertical strut 55. In this way, the hole plans of the two connecting plates 35, 39 described below can be fixed spatially to one another, so that when the truss sections 13, 15 are joined together to form a truss 11, none

Adjustment work is required.

The cross section Y indicated in FIG. 2 through the connecting area 31 of the lower chord section 23A is shown in FIG. 3A. The cross section X indicated in FIG. 2 through the connecting area 31 of the upper chord section 21A is shown in FIG. 3B. The two FIGS. 3A and 3B are described together below.

Each of the connecting plates 35, 39 has bores 51 for receiving the

Connecting elements 47, the central longitudinal axes of the bores 51 being arranged parallel to the longitudinal direction of the framework sections 13, 15 (see FIG. 2). As a result, the connecting elements 47 are subjected to tensile stress in their longitudinal extension and not, for example, to shear or embedding. In the case of two connecting plates 35, 39 of successive truss sections 13, 15 to be connected to one another, the hole plan, that is, the arrangement of the bores 51 in the Connection plates 35, 39, be consistent.

As FIGS. 3A, 3B show, a flat profile 53 is attached to the side of the upper chord section 21A or lower chord section 23A; preferably

welded on. This adjoins the connecting area 31 and, as shown in FIG. 2, extends from the intermediate plate 37 at least over a certain area along the upper chord section 21A, 21B or lower chord section 23A, 23B. By welding this flat profile 53, the center of gravity Si of the upper flange section 21A, 21B or lower flange section 23A, 23B is shifted closer to the center of gravity S2 of the I-profile 33. This allows the

Connection area 31 the torsional moments and thus the risk of

Torsional torsional buckling can be reduced again.

Since panels are usually to be attached to the outside of the trusses 11, it is particularly important that no parts such as the connecting plates 35, 39 protrude beyond the side surfaces of the upper chords 21 and lower chords 23 in the area of these surfaces of the truss 11 to be clad. Therefore, as the cross-sections X and Y of FIGS. 3A, 3B show, the surfaces of the connecting plate 35, 39, the intermediate plate 37 and the I-profile 33 facing away from the surroundings of the cuboid space 71 and extending in the longitudinal direction are with reference to the longitudinal extension arranged flush with the corresponding side surfaces of the tubular upper belt section 21A, 21B and the tubular lower belt section 23A, 23B, respectively.

FIG. 4 shows a three-dimensional representation of a connecting area 81 in a second configuration based on the upper flange 21 and FIGS. 5A to 5C show the cross-sections U, V, W of connecting area 81 indicated in FIG. 4. Basically, the second configuration of connecting area 81 has the same

Features relevant to the invention, such as the first embodiment of the

Connection area 31.

In the second embodiment of the connection area 81, the transition from the tubular cross-section to the I-shaped cross-section is not made by adding an I-profile piece 33, but by means of forming and / or forming. Forming can be done, for example, by hammering, forging, pressing, Deep-drawing and the like of the tubular upper belt section 21A, 21B arranged in the connecting region 81 take place. Material-applying manufacturing processes such as 3D printing processes, build-up welding and the like can be used for forming. By forming lateral indentations 82 on the tubular upper chord section 21A, 21B, the square tubular cross-section in the connecting area 81 changes continuously into the I-shaped cross-section, as is shown schematically in FIGS. 5A, 5B and 5C. To accommodate the fastening means 47 is the same as in the first

Design one arranged on the front side of the upper chord section 21A, 21B

Connection plate 39 is provided. It is obvious that the lower chord sections 23A, 23B can also be provided in the same way with connection areas 81 of the second embodiment.

Although the invention has been described through the illustration of specific exemplary embodiments, it is apparent that numerous others

Design variants can be created with knowledge of the present invention, for example by combining the features of the individual exemplary embodiments with one another and / or exchanging individual functional units of the exemplary embodiments. A possible combination of the exemplary embodiments shown in FIGS. 1 to 5 would result, for example, if the tubular cross section of the upper flange section 21A, 21B or

Lower chord section 23A, 23B partially deformed, and this an I-profile piece 33 would be attached.

Claims

1. Truss section (13, 15) of a truss (11) for a

Passenger transport system (1), having at least one connecting area (31, 81) which is formed at at least one of the two ends of the framework section (13, 15) and which connecting area (31, 81) with the connecting area (31, 81) is at least one further truss section (13, 15) can be connected, the truss section (13, 15) each having two upper chord sections (21A, 21B) and two

Includes lower chord portions (23A, 23B) extending in the longitudinal direction of the

Truss section (13, 15) extend parallel to each other and so through

Connecting struts (25) are connected to one another that a cuboid space (71) is defined by them and the upper chord sections (21A, 21B) and the

Lower chord sections (23A, 23B) have a tubular cross-section, characterized in that in the connection area (31, 81) the upper chord sections (21A, 21B) and the lower chord sections (23A, 23B) merge from the tubular cross-section into an I-shaped cross-section are.

2. Truss section (13, 15) according to claim 1, wherein the upper chord section (21A, 21B) or the lower chord section (23 A, 23B) has the tubular cross section of a square tube profile.

3. Truss section (13, 15) according to claim 1 or 2, wherein the transition from the tubular cross-section to the I-shaped cross-section is designed continuously by means of forming.

4. Truss section (13, 15) according to claim 1 or 2, wherein the transition from the tubular cross-section to the I-shaped cross-section by an end-side attachment of an intermediate plate (37) and an I-profile piece (33) to the tubular

Upper belt section (21A, 21B) or lower belt section (23 A, 23B) is configured discontinuously.

5. Truss section (13, 15) according to claim 4, wherein the I-profile piece (33) has two flanges (41, 43) which are arranged in planes parallel to one another and which are connected to one another by a web (45).

6. Truss section (13, 15) according to claim 5, wherein at least one of the two flanges (41, 43) is arranged asymmetrically to the web (45) or has a recess (49).

7. Truss section (13, 15) according to one of claims 4 to 6, wherein the length (Li) of the I-Profdstücks (33) is one to five times the height (Hp) of the tubular

Cross-section of the upper chord section (21A, 21B) or of the lower chord section (23A, 23B), preferably two to three times the height (Hp) of the tubular

Cross section, particularly preferably two and a half times the height (Hp) of the tubular cross section.

8. Truss section (13, 15) according to one of the preceding claims, wherein at the end of the upper chord section (21A, 21B) or the lower chord section (23A, 23B) opening into the connection area (31, 81) with its end face a connecting plate (35, 39) flat extension orthogonal to the longitudinal direction of the

Truss section (13, 15) on the I-shaped cross-section then in

Connecting area (31, 81) is arranged, via which connecting plates (35, 39) the framework sections (13, 15) can be connected to one another by means of connecting elements (47).

9. Truss section (13, 15) according to claim 8, wherein each of the connecting plates (35, 39) has bores (51) for receiving the connecting elements (47), the central longitudinal axes of the bores (51) being parallel to the longitudinal direction of the

Truss section (13, 15) are arranged and the hole plan of these holes (51) of two interconnectable connecting plates (35, 39) of successive truss sections (13, 15) is consistent.

10. Truss section (13, 15) according to one of the preceding claims, wherein at least those facing away from the surroundings of the cuboid space (71), extending in the longitudinal direction surfaces of the connecting plate (35, 39) and, if present, also the intermediate plate (37) and of the I-profile piece (33), with reference to the longitudinal extension, are arranged flush with the corresponding side surfaces of the upper chord section (21A, 21B) or the lower chord section (23 A, 23B).

11. Truss section (13, 15) according to one of the preceding claims, wherein in the connection area (31, 81) of the truss section (13, 15) in each case the connecting plate (39) of the upper chord section (21A, 21B) with the connecting plate (35) of the

Lower chord section (23A, 23B) are connected to one another by a vertical strut (55).

12. Truss (11) of a passenger transport system (1) comprising at least two truss sections (13, 15) according to one of claims 1 to 11, wherein each adjoining truss sections (13, 15) in the connecting area (31, 81) through

Fastening means (47) are firmly connected to one another.

13. Passenger transport system (1) configured as an escalator or moving walk with a framework (11) according to claim 12.