Escalator

Abstract

An escalator includes a truss formed by a support structure that bridges a lower platform and an upper platform of the escalator, the truss including two rising sides from a bottom plane of the truss upward, the sides extending along a length of the truss and connected together by cross braces. The escalator also includes a subframe (100) attached to an outside of at least one of the sides of the truss, the subframe arranged to receive an outer cladding of the escalator.

Description

TECHNICAL FIELD

[0001] The present invention relates to an escalator. BACKGROUND

[0002] An escalator is a vertical transportation device in the form of moving steps, i.e. a conveyor transportation device for transporting people between floors of a building. The device consists of a motor-driven chain of individual linked steps that move up and down on a track, allowing the step tread to remain horizontal. The steps move upwards and / or downwards on the transportation side of the escalator and return on the return side of the escalator.

[0003] An escalator can include a landing platform, a truss, a track, steps, and a railing.

[0004] The landing platform houses the curved sections of the track, as well as the gears and motors that drive the steps. The top platform contains the motor assembly and the main drive gear, while the bottom platform houses the return gears. These sections also secure the ends of the escalator truss. In addition, the platform contains a floor and a comb plate. The floor provides a place for passengers to stand before stepping onto the moving steps. The floor is flush with the finished floor and can be hinged or removable to allow easy access to the machinery underneath. The comb plate is the component that secures the floor and the moving steps together. It is so named because its edges have a series of cleats that resemble the teeth of a comb. These teeth engage with the mating cleats on the edges of the steps. This design is necessary to reduce the gap between the steps and the platform, which helps prevent objects from being caught in the gap.

[0005] The truss can be formed of a hollow metal structure that bridges the lower and upper platforms. It can consist of two side sections and be connected together with cross braces underneath the bottom and top. The ends of the truss can be attached to the top and bottom landing platforms by steel or concrete supports. The truss carries all of the straight track sections that connect the upper and lower sections.

[0006] The track system can be built into the truss to guide the steps and chain, which constantly pulls the steps from the bottom platform back to the top platform in an endless loop. The steps can be supported by two pairs of wheels on the tracks respectively. The axial distance between the wheels in the two pairs of wheels, and thus the axial distance between the two pairs of tracks, can be different. The relative position of the two pairs of tracks is such that the steps form a staircase as they move out from under the comb plate. Along the inclined sections of the truss, the distance between the tracks is the greatest. This configuration keeps the step tread always level on the escalator, so the steps resemble the steps on the inclined sections of the escalator. At the top and bottom of the escalator, the two tracks converge, bringing the two pairs of wheels almost in a straight line. This results in the steps being arranged in a flat plate, one after another, so they can easily navigate the curves of the track curved sections. The tracks move the steps down along the underside of the truss until they reach the bottom platform, where they pass through another curved section of the tracks before leaving the bottom platform. Here the tracks diverge, and the steps again assume a step structure. This cycle repeats as the steps are pulled from the bottom to the top and back again to the bottom. The track system includes a transport guide rail on the transport side and a return guide rail on the escalator return side.

[0007] The steps themselves are solid, one-piece, die-cast aluminum or steel. In most escalator models, the step tread and the step riser of each step are fitted with anti-slip texturing, i.e., have a ribbed appearance, with comb-like protrusions that engage with the comb plates on the top and bottom platforms and with the subsequent steps in the chain. These steps are connected by at least one continuous metal chain that forms a closed loop. The steps can be supported by two pairs of wheels. The wheels in one pair of wheels are set further apart in the axial direction compared to the other pair of wheels.

[0008] The handrail can be positioned on the opposite lateral sides of the steps. The handrail can include a base supported on the truss, a handrail panel extending upward from the base, and a moving handrail supported on the upper edge of the handrail panel. The base of the handrail can be covered with a skirt that lies adjacent to the steps and extends parallel to the steps. A gap is formed between the skirt and the vertical side surfaces of the steps. The handrails provide a convenient handhold for passengers riding the escalator. The handrails are pulled along their tracks by a chain that can be connected to the main drive gear through a series of pulleys.

[0009] The truss is typically manufactured by a subcontractor. There can be small errors in the dimensions of the truss, and the truss can not be perfectly straight in the longitudinal direction of the escalator. Installing the motor, drive mechanism, and other equipment into the truss at the escalator factory can cause further distortion in the dimensions and straightness of the truss. Installing the escalator on site can also cause further distortion in the dimensions and straightness of the truss.

[0010] Attempting to fix the distortions and damage caused to the truss at each successive stage of the process is expensive and time-consuming.

[0011] JPS58192867U discloses an escalator provided with an outer structure.

[0012] US2001 / 0025763 discloses an escalator provided with a bottom observation panel.

[0013] JP2909896B1 discloses an escalator provided with a side outer structure which can be easily attached to the truss in the escalator.

[0014] JP2004137014A discloses an escalator provided with hook-like members on the truss and members for attachment to the hook-like members in the side and bottom panels. SUMMARY

[0015] It is an object of the present invention to achieve an improved escalator.

[0016] The escalator according to the invention is defined in claim 1.

[0017] The escalator comprises a truss formed by a support structure bridging a lower platform and an upper platform of the escalator, the truss comprising two rising sides from a bottom plane of the truss upwards, the sides extending along the length of the truss and being connected together by cross-pieces.

[0018] The escalator further comprises a sub-frame attached to the outside of at least one side of the truss, the sub-frame being arranged to receive an outer cladding of the escalator. The sub-frame is formed by beams arranged in a lattice structure.

[0019] The separate sub-frame attached to the side of the truss solves the problem of small errors in the size of the truss and the problem of the truss not being straight.

[0020] The separate sub-frame forms a high quality support structure for the outer cladding of the escalator. The use of the sub-frame results in a flawless and straight installation of the outer cladding. The use of the sub-frame will also result in a screwless visual appearance of the escalator.

[0021] The use of the sub-frame also makes it easy to exchange the cladding panels if needed. Worn or damaged cladding panels can be easily exchanged at any time. BRIEF DESCRIPTION OF DRAWINGS

[0022] The invention will be described in more detail below by means of preferred embodiments with reference to the enclosed drawings, in which:

[0023] Figure 1 a schematic side view of an escalator is shown,

[0024] Figure 2 a schematic vertical cross-section of an escalator is shown,

[0025] Figure 3A schematic isometric view of the escalator truss is shown,

[0026] Figure 4 is a side view of the truss,

[0027] Figure 5 A side view of the escalator sub-frame is shown,

[0028] Figure 6 A side view of the escalator with cladding is shown,

[0029] Figure 7 A cross-sectional view of one side of the escalator is shown,

[0030] Figure 8 An isometric view of the sub-frame upper fastening to the truss is shown,

[0031] Figure 9 An isometric view of the sub-frame lower fastening to the truss is shown,

[0032] Figure 10 An isometric view of the soffit plate of the escalator is shown,

[0033] Figure 11 An isometric view of the soffit plate attached to the sub-frame is shown,

[0034] Figure 12 An isometric view of the cladding plate attached to the sub-frame is shown,

[0035] Figure 13 An isometric view of the soffit plate and the cladding plate attached to the sub-frame is shown. DETAILED DESCRIPTION

[0036] Figure 1 A schematic side view of the escalator is shown.

[0037] The escalator 1 connects a lower plane E1 and an upper plane E2. The truss 10 forms a load support frame of the escalator 1 between the upper plane E2 and the lower plane E1. Figure 3The truss 10 is shown in more detail. The endless construction of the continuous steps 20 moving in a closed loop around the drive roller 2 and the return roller 3 can be positioned in the truss 10. The drive roller 2 can be located at the upper end of the escalator and the return roller 3 can be located at the lower end of the escalator. The closed loop can thus be deflected in the upper plane E2 and the lower plane E1. A balustrade 30 can extend along each longitudinal side of the step band 20. A moving handrail 32 can be arranged at each balustrade 30, wherein a return section of the handrail is arranged in a balustrade base 31 connecting the balustrade 30 with the truss 10. At least one side of the truss 10 can be clad with several cladding parts 40. The cladding parts 40 can extend in height above the truss 10 and the balustrade base 31 and can be made of steel plates. The balustrade 30 can comprise a support structure between the base 31 and the handrail 32. The support structure can be covered with cladding plates. On the other hand, the support structure can be formed by balustrade panels extending between the base 31 and the handrail 32. The balustrade panels can be transparent, for example made of glass.

[0038] The length direction Z of the escalator is also indicated in the figure. The length direction Z is horizontal in the lower plane E1 and the upper plane E2 of the escalator. The length direction Z forms a first angle a1 with the horizontal plane of the inclined portion of the escalator.

[0039] Figure 2 A schematic vertical cross-section of the escalator is shown.

[0040] The transverse direction X, i.e. the width direction of the steps 20, and the height direction Y, i.e. the vertical direction, are indicated in the figure. The escalator can have a transport side TS and a return side RS. The upper part of the figure shows the steps 20 in the transport side TS of the escalator. The step tread 21 of the steps 20 faces upwards in the transport side TS of the escalator. The lower part of the figure shows the steps 20 in the return side RS of the escalator. The steps 20 are hanging, i.e. the step tread 21 faces downwards in the return side RS of the escalator. The steps 20 are conveyed back to the starting point of the transport side TS in the return side RS of the escalator. The steps 20 can be moved upwards or downwards in the transport side of the escalator. Thus, people can be transported upwards and / or downwards in the transport side TS of the escalator. If desired, the escalator can be configured to run in one direction only, or the escalator can be configured to run in both directions.

[0041] The escalator can comprise a horizontal top platform, a horizontal bottom platform and an inclined portion extending between the top platform and the bottom platform.

[0042] Each step 20 can be provided with two pairs of rollers. A first pair of rollers 22 can be provided on a first edge of the step 20. Each roller 22 of the first pair of rollers is provided on a respective side of the step 20. A second pair of rollers 23 can be provided on a second edge of the step 20. Each roller 23 of the second pair of rollers is provided on a respective side of the step 20. An axial distance between the rollers 22 of the first pair of rollers 22 can be smaller than an axial distance between the rollers 23 of the second pair of rollers 23. The rollers 22 of the first pair of rollers 22 and the rollers 23 of the second pair of rollers can be rotatably supported by a shaft on a support frame of the step 20. The first edge of the step 20 can be an edge of the step 20 facing an upper end of the escalator, the second edge of the step 20 can be an edge of the step 20 facing a lower end of the escalator when the step 20 is moved upwards on a transport side TS of the escalator. The step 20 can be moved upwards or downwards on the transport side TS of the escalator.

[0043] The escalator can be provided with a first pair of transport rails 22A for the first pair of rollers 22 in the transport side TS of the escalator and a second pair of transport rails 23A for the second pair of rollers 23 in the transport side TS of the escalator.

[0044] The escalator can further be provided with a first pair of return rails 22B for the first pair of rollers 22 in the return side RS of the escalator and a second pair of return rails 23B for the second pair of rollers 23 on the return side RS of the escalator.

[0045] The first pair of rollers 22 and the second pair of rollers 23 run on upper support surfaces of the respective transport rails 22A, 23A on the transport side TS of the escalator. Thus, a force acting on the tread 21 of the step 20 will be distributed to the respective transport rails 22A, 23A by the rollers 22, 23.

[0046] From the first pair of rollers 22 and the second pair of rollers 23 running on the respective return rails 22B, 23B on the return side RS of the escalator, the step 20 is supported in a suspended position. The return rails 22B, 23B only need to support the weight of the step 20.

[0047] The shaft of the first roller 22 can be attached to the chain only on one axial side of the step or on both axial sides of the step 20. The chain on one side of the step 20 or the chain on each side of the step 20 can form a circulating loop that runs on the drive roller on the upper level of the escalator and on the return roller on the lower level of the escalator. The chain can be provided with one or more chain wheels in the chain loop between the attachment points of the chain and the rollers 22 of the step 20. The chain wheels can roll on the same guide rails 22A, 23A. The drive roller can be driven directly or by a drive motor through a transmission. The electric drive motor can be controlled by a converter. The rotational speed and the direction of rotation of the electric drive motor can be controlled by the converter.

[0048] The transport guide rails 22A, 23A and the return guide rails 22B, 23B can be supported to the truss 10 of the escalator with support brackets at variable intervals. The transport guide rails 22A, 23A and the return guide rails 21B, 23B can be manufactured from cold-rolled steel by rolling bending, drawing or some other suitable method to manufacture long, lightweight metal structures.

[0049] The balustrade 30 can be formed of a base 31, balustrade panels 50 supported on the base 31 and handrails 32 movably supported on the upper edge of the balustrade panels 50. The lower end of the balustrade panels 50 can be supported in slots 60 arranged in the base 31 of the balustrade 30. The balustrade panels 50 can be formed of several consecutive balustrade panels 50 connected end to end along the longitudinal direction of the escalator. The balustrade panels 50 can be transparent, for example made of glass.

[0050] The base 31 of the balustrade 30 can be covered with an inner cover plate 310, a skirt plate 320 and an outer cover plate 200.

[0051] The skirt plate 320 can be positioned at a horizontal distance from the vertical side plane 25 of the step 20. The skirt plate 310 can be parallel with the vertical side plane 25 of the step 20. The skirt plate 320 can be substantially vertical. A gap G1 can thus be formed between the skirt plate 320 and the vertical side plane 25 of the step 20. The maximum horizontal width of this gap G1 is determined by safety regulations. The vertical side plane 25 of the step 20 extends on the vertical side surface of the step 25 in the longitudinal direction Z of the escalator. The lower end of the skirt plate 320 can be located at a vertical distance below the tread 21 of the step 20 and the upper end of the skirt plate 320 can be located at a vertical distance above the tread 21 of the step 20.

[0052] The inner cover plate 310 can extend obliquely from the upper end of the skirt plate 320 towards the balustrade panel 50. The upper end of the inner cover plate 310 can extend at a horizontal distance from the balustrade panel 50.

[0053] The balustrade 30 shown in the figures is a low deck balustrade. The base 31 of the balustrade is low and the balustrade panels 50 form a support structure of the balustrade 30 that supports the handrails 32.

[0054] Figure 3 A schematic isometric view of a truss of an escalator is shown, Figure 4 A side view of the truss is shown.

[0055] The truss 10 can be formed by a support structure that bridges the lower platform E1 and the upper platform E2 of the escalator. The truss 10 can comprise a horizontal lower part 10A, a horizontal upper part 10B and an inclined middle part 10C extending between the lower part 10A and the upper part 10B. The truss 10 can comprise two rising side parts 12, 13 that rise upwards from a bottom plane 11 of the truss 10. The side parts 12, 13 of the truss 10 can extend in a longitudinal direction Z of the truss 10. The side parts 12, 13 of the truss 10 can be connected together with cross braces 14.

[0056] The side parts 12, 13 of the truss 10 can be formed by a longitudinal lower support beam 12A, a longitudinal upper support beam 12B and a cross beam 12C extending between the lower support beam 12A and the upper support beam 12B.

[0057] Figure 5 A side view of a sub-frame of an escalator is shown.

[0058] The sub-frame 100 can be formed by a separate component that is attached to the side parts 12, 13 of the truss 10. The sub-frame 100 can be located on an outer surface of the side parts 12, 13 of the truss 10. The attachment between the sub-frame 100 and the side parts 12, 13 of the truss 10 can be adjustable. When the sub-frame 100 is attached to the side parts 12, 13 of the truss 10, the position of the sub-frame 100 relative to the side parts 12, 13 of the truss 10 can thus be adjusted. The adjustable sub-frame 100 makes it possible to achieve a straight, vertical and visually threadless appearance of the escalator after the cladding 40 has been attached to the sub-frame 100. There is thus no need to try to correct defects that can exist in the truss 10 by modifying such a truss 10. Defects that can exist in the truss 100 will be corrected by adjusting the position of the sub-frame 100 on the truss 10. The sub-frame 100 can be attached to the truss 10 at the site of the escalator.

[0059] The sub-frame 100 can comprise a side 110 extending on one side of the side 12, 13 of the truss 10. The side 110 of the sub-frame 100 can be formed by beams 120, 130 arranged in a lattice structure. The side can comprise longitudinal beams 120 and transverse beams 130. The longitudinal beams 120 can extend in the longitudinal direction Z of the escalator. The transverse beams 130 can be perpendicular to the longitudinal beams 120. The longitudinal beams 120 can be attached to the transverse beams 130 by a flange 125 located at the intersection between the longitudinal beam 120 and the transverse beam 130. The sub-frame 100 can form a rigging grid between the truss 10 and the cladding panel 40.

[0060] The sub-frame 100 can be formed of modules. The sub-frame 100 can comprise three modules, a lower module 100A extending on the lower platform E1, an upper module 100B extending on the upper platform E2, and an intermediate module 100C extending between the lower module 100A and the upper module 100B. The lower module 100A can be positioned on the lower part 10A of the truss 10. The upper module 100B can be positioned on the upper part 10B of the truss 10. The intermediate module 100C can be positioned on the intermediate part 10C of the truss 10. The lower module 100A and the upper module 100B can be substantially horizontal. The intermediate module 100C can be inclined. The intermediate module 100C can be further divided into sub-modules.

[0061] The dimensions of the beams 120, 130 in the sub-frame 100 can be designed to support only the weight of the sub-frame 100, the cladding 40 and the spandrel panel 400.

[0062] Figure 6 A side view of an escalator with cladding is shown.

[0063] The cladding panel 40 of the side of the escalator and the spandrel panel 400 of the lower corner of the escalator have been installed on the outer surface of the sub-frame 100. Thanks to the use of the sub-frame 100, the visual appearance of the escalator can be taken to a new higher level.

[0064] Figure 7 A cross-sectional view of one side of an escalator is shown.

[0065] The sub-frame 100 can be attached to the truss 10 at first fastening means F1 located in connection with an upper part of the sub-frame 100 and at second fastening means F2 located in connection with a lower part of the sub-frame 100. The first and second fastening means F1, F2 can be arranged at suitable intervals along the longitudinal direction Z of the sub-frame 100. Each fastening means F1, F2 can comprise a flange 150 attached to the sub-frame 100. The flange 150 can extend outwardly from the sub-frame 100 towards the truss 10. The flange 150 can extend substantially in the horizontal direction X. An inner end of the flange 150 can be attached to the sub-frame 100. Suitable fastening means can be used to connect the flange 150 and the sub-frame 100 to the truss 10. The fastening means can be arranged such that the position of the sub-frame 100 relative to the truss 10 can be adjusted. The cladding 40 and the web 400 can be attached to an outer surface of the sub-frame 100. The longitudinal direction Z of the sub-frame 100 extends into the paper in the figure.

[0066] Figure 8 An isometric view of a sub-frame upper part fastened to a truss is shown.

[0067] The sub-frame 100 can be attached to the truss 10 by means of the first fastening means F1. The first fastening means F1 can be located in an upper part of the sub-frame 100. The first fastening means F1 can be distributed at certain intervals along the longitudinal direction Z of the sub-frame 100. A first C-profile 170 can be attached to an upper longitudinal support beam 12B in the truss 10. The first C-profile 170 can be attached to an upper surface of the upper longitudinal support beam 12B in the truss 10. The flange 150 can be provided with two openings 155. The openings 155 can be oblong in the horizontal direction X. The flange 150 can be attached to the first C-profile 170 with bolts 160 and nuts 165 passing through the openings 155. The position of the sub-frame 100 relative to the truss 10 can thus be adjusted.

[0068] When the bolts 160 are tightened, the flange 150 is locked to the first C-profile 170. The nuts 165 can be formed by housing nuts. The housing nuts can be positioned in the first C-profile 170. The housing nuts can have a rectangular head with a width and a length. The housing nuts can be positioned in the first C-profile 170 such that the length of the housing nuts extends along the slit in the first C-profile 170. Rotating the housing nuts 90 degrees results in the housing nuts being supported in the first C-profile 170. Now tightening the bolts 160 locks the flange 150 to the first C-profile 170.

[0069] The sub-frame 100 can thus be positioned outside the truss 10 such that the sub-frame 100 is vertical and straight in the longitudinal direction of the sub-frame 100, regardless of imperfections that can exist in the truss 10.

[0070] The cladding 40 can be attached to the sub-frame 100 with hook fastening members 45.

[0071] Figure 9 An isometric view is shown of the sub-frame lower part fastened to the truss.

[0072] The sub-frame 100 can be attached to the truss 10 with second fastening means F2. The second fastening means F2 can be located at the lower part of the sub-frame 100. The second fastening means F2 can be distributed at specific intervals along the longitudinal direction Z of the sub-frame 100. The flange 150 can be attached to a second C-profile 175 with two bolts 160 and nuts 165. The second C-profile 175 can be attached to the lower longitudinal support beam 12A of the truss 10. The second C-profile 175 can be attached to the lower surface of the lower longitudinal support beam 12A in the truss 10. The flange 150 can be provided with an opening. The opening can be oblong in the horizontal direction X. The position of the sub-frame relative to the truss 10 can thus be adjusted.

[0073] When the bolts 160 are tightened, the flange 150 is locked to the second C-profile 175. The head of the bolt 160 can be positioned within the second C-profile 175. The head of the bolt 160 can comprise a rectangular portion having a width and a length. The head of the bolt 160 can be positioned in the second C-profile 175 such that the length of the head of the bolt 160 extends along the slit in the second C-profile 175. Turning the head of the bolt 160 90 degrees results in the head of the bolt 160 being supported within the second C-profile 175. Now tightening the bolt 160 locks the flange 150 to the second C-profile 175.

[0074] The sub-frame 100 can thus be positioned outside the truss 10 such that the sub-frame 100 is vertical and straight in the longitudinal direction of the sub-frame 100, regardless of possible imperfections in the truss 10.

[0075] The soffit plate 400 can be attached to the sub-frame 100 with fastening members. The soffit plate 400 can form a starting point when a vertical row of cladding plates 40 is to be installed on the sub-frame 100. The soffit plate 400 can have the form of the letter L, wherein a first portion of the soffit plate 400 extends along the side of the sub-frame 100 and a second portion of the soffit plate 400 extends along the bottom of the truss 10. The lower edge of the cladding plate 40 can then be installed on a connection portion 410 formed in the upper edge of the soffit plate 400.

[0076] Figure 10 An isometric view is shown of the soffit plate of the escalator.

[0077] The soffit plate 400 can comprise a connecting portion 410 at both outer ends of the L-shaped soffit plate 400. The soffit plate 400 can further comprise a fastening member 420 for attaching the soffit plate 400 to the sub-frame 100. The fastening member 420 can have the shape of a hook.

[0078] Figure 11 An isometric view showing the soffit plate attached to the sub-frame is shown.

[0079] The soffit plate 400 can be attached to the pin 180, which is attached to the sub-frame 100, by means of a fastening member 420 having the shape of a hook. The pin 180 can extend outwardly from the sub-frame 100. The pin 180 can extend in the longitudinal direction of the sub-frame 100.

[0080] Figure 12 An isometric view showing the cladding plate attached to the sub-frame is shown, Figure 13 An isometric view showing the soffit plate and the cladding plate attached to the sub-frame is shown.

[0081] The cladding plate 40 can be attached to the longitudinal beam 120 of the sub-frame 100 by means of a fastening member 45. The fastening member 45 can have the shape of a hook. The fastening member 45 can be attached to the cladding plate 40 in a suitable manner. The fastening member 45 can be clamped against the longitudinal beam 120 when the cladding plate 40 is lifted into place.

[0082] The flange 125 attaches the longitudinal beam 120 and the cross beam 130 to each other in the sub-frame 100.

[0083] The flange 150 can be attached to the lower edge of the longitudinal beam 120 in the sub-frame 100.

[0084] The cladding plate 40 can be attached to the longitudinal beam 120 of the sub-frame 100 and the soffit plate 400 can be attached to the pin 180, which is attached to the sub-frame 100.

[0085] The first and second C-profiles 170, 175 can be attached to the truss 10 with any suitable attachment means. One possible fastening means is welding. The flange 150 and the pin 180 can be attached to the sub-frame 100 with any suitable attachment means. One possible fastening means is welding.

[0086] The figures show two rows of stacked cladding plates 40 on the sub-frame 100. This is an advantageous embodiment. However, the cladding can be formed of any number of rows of cladding plates 40. The cladding plates 40 can of course also be formed in any pattern.

[0087] The use of the invention is not limited to the escalator disclosed in the figures. The invention can be used in any type of escalator.

[0088] It will be obvious to a person skilled in the art that, as technology advances, the basic idea of the application can be implemented in a variety of ways. The application and its embodiments are not limited to the examples described above, but can vary within the scope of the claims.

Claims

1. An escalator comprising a truss (10) formed by a support structure bridging a lower platform (El) and an upper platform (E2) of the escalator, said truss (10) comprising two rising sides (12, 13) from a bottom plane (11) of the truss upwards, said sides (12, 13) extending along the length of the truss (10) and being connected together by cross-pieces (14), a sub-frame (100) attached to the outside of at least one side (12, 13) of the truss (10), said sub-frame (100) being arranged to receive an outer cladding (40, 400) of the escalator, characterized in that said sub-frame (100) being formed by beams (120, 130) arranged in a grid structure, the position of the sub-frame relative to the side of the truss is adjustable when the sub-frame is attached to the side of the truss, the dimensions of the beams (120, 130) in the sub-frame (100) are designed to support only the weight of the sub-frame (100) and the cladding (40).

2. The escalator according to claim 1, wherein, said sub-frame (100) is formed by modules.

3. The escalator according to claim 2, wherein, said sub-frame (100) comprises three modules, a lower module (100A) extending over the lower platform (El), an upper module (100B) extending over the upper platform (E2), and an intermediate module (100C) extending between the lower module (100A) and the upper module (100B).

4. The escalator according to claim 3, wherein, said intermediate module (100C) is further divided into sub-modules.

5. Escalator according to any one of claims 1 to 4, wherein, said sub-frame (100) is attached to the truss (10) at first fastening means (Fl) arranged at certain intervals in the longitudinal direction (Z) at an upper part of the sub-frame (100) and at second fastening means (F2) arranged at certain intervals in the longitudinal direction (Z) at a lower part of the sub-frame (100).

6. The escalator according to claim 5, wherein, each of said first fastening means (Fl) and each of said second fastening means (F2) comprises a flange (150) attached to said sub-frame (100), said flange extending outwards from the sub-frame (100) towards the truss (10), said flange (150) being adjustably attached to the truss (10) by fastening means (160, 165).

7. The escalator according to claim 6, wherein, said fastening means (160) comprises a bolt and a nut (165), said bolt passing through an opening (155) in said flange (150) to the truss (10), the nut (165) fixing the bolt to the truss (10), said opening (155) being arranged to allow adjustment of the flange (150) and thereby also of the sub-frame (100) relative to the truss (10).

8. The escalator according to claim 7, wherein, said truss (10) comprises a first C-shaped beam (170) attached to an upper longitudinal support beam (12B) in the truss (10) and a second C-shaped beam (175) attached to a lower longitudinal support beam (12A) in the truss (10), said flange (150) being attached to the respective C-shaped beam (170, 175) by the bolt and the nut (165).

9. Escalator according to any one of claims 1 to 4, wherein The outer cladding (40, 400) is attached to the sub-frame (100) by fastening members (45, 420) having a hook shape.

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