EP3532422B1 - Fahrtreppe mit im rücklauf ineinander kämmend eingreifenden trittstufen - Google Patents

Fahrtreppe mit im rücklauf ineinander kämmend eingreifenden trittstufen Download PDF

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Publication number
EP3532422B1
EP3532422B1 EP17794914.6A EP17794914A EP3532422B1 EP 3532422 B1 EP3532422 B1 EP 3532422B1 EP 17794914 A EP17794914 A EP 17794914A EP 3532422 B1 EP3532422 B1 EP 3532422B1
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EP
European Patent Office
Prior art keywords
guide rail
roller guide
region
adjacent
chain
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EP17794914.6A
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German (de)
English (en)
French (fr)
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EP3532422A1 (de
Inventor
Thomas Novacek
Kurt Streibig
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Inventio AG
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Inventio AG
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Priority to PL17794914T priority Critical patent/PL3532422T3/pl
Publication of EP3532422A1 publication Critical patent/EP3532422A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways
    • B66B23/08—Carrying surfaces
    • B66B23/12—Steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways
    • B66B23/14—Guiding means for carrying surfaces

Definitions

  • the present invention relates to an escalator.
  • Escalators sometimes also referred to as escalators, are used to transport people between two levels along a travel path.
  • the escalator has a large number of steps which are arranged one behind the other along the travel path.
  • Each of the steps has a step surface which is directed upwards in front of the escalator and can be stepped on by the people to be transported.
  • a setting surface running transversely to this step surface adjoins a rear end of this step surface, seen upward in a conveying direction.
  • the steps are connected to one another via a traction device, for example a step chain or a belt, and form a step band.
  • a drive unit can drive the step belt or the step chain and thus move the steps in a forward motion along the travel path.
  • the advance of the travel path extends from a lower horizontally extending area adjacent to an access to the escalator via a central inclined area to an upper horizontally extending area adjacent to an exit of the escalator. Since the step band or the step chain is designed to run around, the treads are moved in the opposite direction and essentially parallel to the travel path of the forward movement when they return.
  • Each of the treads typically has a front toothed structure with adjacent ribs and intervening grooves on an end face directed forward and transverse to the tread surface. Furthermore, each of the treads typically has a rear toothed structure, likewise with adjacent ribs and grooves in between, in a rearwardly directed region of the setting surface.
  • the front and rear toothing structures are adapted to one another and preferably designed to be complementary to one another in such a way that they can mesh with one another in the advance of the escalator.
  • the front Toothed structure of one of the treads engage the rear toothed structure of the adjacent step in such a way that the ribs of the front toothed structure engage in the grooves of the rear toothed structure and the ribs of the rear toothed structure engage in the grooves of the front toothed structure.
  • a gap that is compulsorily to be provided between adjacent steps can be designed to meander in such a way that the risk of an object such as a passenger's shoe getting caught in it is minimized.
  • a meshing interlocking of adjacent treads can also support guidance of the treads, that is, adjacent treads can hardly move relative to one another in a direction transverse to the travel path.
  • escalators Due to this prejudice, escalators have so far been designed in such a way that their steps always remained sufficiently spaced from one another during the return. For this purpose, however, the escalators had to be designed with relatively large dimensions, whereby the installation space required for an escalator was increased.
  • an escalator which has several steps arranged one behind the other along a travel path, each step containing a step surface and a setting surface adjacent to a rear end of the step surface and running transversely to the step surface.
  • the escalator has a guide rail arrangement which comprises a chain roller guide rail for guiding chain rollers of the treads and a drag roller guide rail for guiding drag rollers of the treads.
  • These guide rails extend over a forward run from a lower horizontally running region of the travel path, over a central inclined region of the travel path, to an upper horizontally running region of the travel path and over a reverse run.
  • Each step has a front toothed structure and a rear toothed structure, the front and rear toothed structures being designed to be complementary to one another in such a way that toothed structures of adjacent treads facing one another can mesh with one another.
  • the chain roller guide rail and / or the drag roller guide rail has two curvature regions of greater curvature and a curvature region of weaker curvature, which are close to the upper and middle region.
  • This special configuration of the guide rail arrangement makes it possible for the toothed structures of adjacent steps to be arranged in a meshing manner at least also in the central, inclined region of the return.
  • the treads can also be guided so as to intermesh with one another during the return movement, on the one hand a reduction in the installation space required for the escalator is made possible.
  • the steps are moved closer together during the return journey, so that the space required for the return journey of the escalator is significantly reduced.
  • the option of guiding the steps in a meshing and engaging manner during the return allows better lateral guidance of the steps during the return, i.e. a greater limitation of their freedom of movement in a direction transverse to the longitudinal direction of the travel path. In this way, for example, further structural measures for a lateral guidance of the steps in the return can be avoided or at least reduced and / or wear of components of the steps caused by this can be reduced.
  • the guide rail arrangement has a chain roller guide rail for guiding chain rollers of the treads and a drag roller guide rail for guiding drag rollers of the treads.
  • different rollers in the form of chain rollers and drag rollers are typically attached to the treads in order to be able to move the treads in a guided manner along the travel path. It has been found advantageous to use different guide rails to guide these different roles.
  • the chain rollers are guided along the chain roller guide rail and the drag rollers are guided along the drag roller guide rail. Because the two types of guide rails can be designed differently and in particular the respective rollers can lead along different paths that do not necessarily need to be parallel, it can be achieved that a step held by the guided chain and drag rollers during the process in desired directions can be tilted or pivoted. Such tilting or pivoting of treads can be used to advantage to bring the treads closer together while traveling through the return in a manner in which their teeth can be inserted into one another in a meshing manner without excessive risk of collisions or canting.
  • the guide rail arrangement should have at least one chain roller guide rail and at least one drag roller guide rail.
  • chain rollers and drag rollers are attached to both opposite sides of the steps, so that two chain roller guide rails and two drag roller guide rails are generally provided in the guide rail arrangement. These are each along opposite sides of the travel path and with a distance which corresponds approximately to the width of the steps running between them.
  • chain roller should be interpreted broadly, which means that it does not necessarily have to be part of a chain. Rather, the term stands for those roles through which the traction means connecting the steps is guided.
  • each step near its front end can have a chain roller orthogonally to the step surface at a first distance and near its rear end a drag roller orthogonally to the step surface at a second distance which is greater than the first distance.
  • the chain roller guide rail and the drag roller guide rail are spaced further apart from one another in the upper horizontally running region of the travel path than in the middle, inclined region of the travel path.
  • the chain roller guide rail and the drag roller guide rail in a transition area between the upper horizontally running region and the central inclined region of the travel path are designed to be differently curved relative to one another that adjacent treads guided along the guide rail arrangement are guided in such a way that the front Toothed structure of a step is spaced from the rear toothed structure of the adjacent step with a gap, as long as both treads are moved along the upper horizontally extending area of the travel path, and the front toothed structure of the step into the rear toothed structure of the adjacent step in an area of the setting surface the gap between these in the horizontal direction is introduced successively reducing the size of the comb when both steps are inclined one after the other along the transition area in the middle one be moved in the area of the travel path.
  • At least one, preferably at least two, chain rollers as well as at least one, preferably at least two, drag rollers are preferably attached to each step.
  • the chain rollers are attached near the front end of the step and the drag rollers near the rear end.
  • a distance between the rollers and the tread surface of the step is smaller for the chain rollers than for the drag rollers.
  • the chain rollers are now guided along the chain roller guide rail provided there, whereas the drag rollers are guided along the separate drag roller guide rail.
  • the chain roller guide rail and the drag roller guide rail are spaced from one another in the vertical direction. However, a distance between these different guide rails is not constant over the entire travel path of the return. Instead, the distance between the chain roller guide rail and the drag roller guide rail should be greater in the upper horizontally running area of the travel path than in the adjoining central, inclined area of the travel path. Due to the closely spaced chain and drag roller guide rails, the treads can be arranged closer to one another, at least in the central inclined area of the travel path, in particular so close that their opposing toothed structures can mesh with one another. Due to the close spacing of the chain and drag roller guide rails from one another, the installation space required for the escalator can be significantly reduced.
  • the chain roller guide rail and the drag roller guide rail in a transition area between the upper horizontally extending area and the central inclined area of the travel path in a very specific way differently curved relative to each other be formed.
  • the chain roller guide rail and the drag roller guide rail can be arranged essentially straight and parallel to one another in large parts of the upper horizontally extending area and the central inclined area of the travel path.
  • the two guide rails In a transition area between the two areas, however, the two guide rails must each be curved and it was recognized that it can be advantageous to use the two guide rails in different ways, i.e. with different radii of curvature and / or a different course of curvature to bend.
  • the different curvatures of the different guide rails should be designed in such a way that adjacent steps, which are guided along the guide rail arrangement, are guided in such a way that the front tooth structure of one step is spaced apart from the rear tooth structure of the adjacent step by a gap, as long as the two steps be moved along the upper horizontally extending area of the travel path.
  • the front toothing structure of the step is to be introduced into the rear toothing structure of the adjacent step in a horizontal direction, with the movement of the treads relative to each other should be done in such a way that the front toothing structure of one step is introduced into an area of the setting surface of the adjacent step into the toothed structure provided there, and a gap between the two toothed structures is successively reduced in the horizontal direction until the two toothed structures are inserted into one another in a meshing manner.
  • the term "horizontal" is used in this The context is to be interpreted broadly and can be interpreted to mean that it should include directions essentially parallel to one of the guide rails.
  • the chain roller guide rail and the drag roller guide rail in the transition area are designed so that they are curved differently relative to each other that a distance between the chain roller guide rail and the drag roller guide rail coming from the upper horizontally extending area initially increases and then further towards middle sloping area gradually decreases.
  • the chain roller guide rail and the drag roller guide rail are arranged parallel to and at a first distance from one another over large parts of the upper horizontally extending region of the travel path. At the When entering the transition area, this distance preferably initially increases, in order to then decrease again in the further course of the transition area towards the inclined area of the travel path and even become smaller than the first distance.
  • the treads guided on the guide rails via their chain rollers and drag rollers are guided in a certain way and, in particular, tilted relative to one another.
  • Such a tilting of the treads while simultaneously approaching adjacent treads can be used to move adjacent treads towards one another in a desired manner in a direction that the risk of collisions is minimized when their toothed structures are finally brought together.
  • the chain roller guide rail has, in the transition area, two curvature areas close to the boundary of greater curvature with an intermediate curvature area of weaker curvature.
  • the chain roller guide rail initially has a greater curvature at the border of the transition area where it merges into the upper horizontally running area, then runs on the way to the central inclined area initially with a smaller curvature, and then on the other border of the transition area before the transition into the central inclined area to assume a stronger curvature again. Due to such a curved configuration of the chain roller guide rail, chain rollers guided thereon can be displaced when driving through the transition area in such a way that a desired movement of the guided step, in particular a desired tilting of the step, is set.
  • the chain roller guide rail can have a greater curvature in at least one of the curvature regions close to the border than the drag roller guide rail in the associated region.
  • the chain roller guide rail and the drag roller guide rail can run parallel to one another in the upper horizontally extending area and in the central inclined area, a change in direction within the transition area connecting these two areas is preferably not synchronous.
  • the chain roller guide rail is more strongly curved than the drag roller guide rail at least in one of the curvature regions close to the boundary.
  • the chain roller guide rail is in both boundary areas of curvature, i.e. both adjacent to the upper horizontally extending area and adjacent to the central inclined area, more curved than the drag roller guide rail. This results in increased tilting of the guided step when passing through this one or both of the curvature areas close to the border, which is more pronounced than in a case in which the two guide rails would be curved uniformly and synchronously with one another.
  • the "associated area" of the drag roller guide rail can be understood to mean that area which is closest to the relevant area of the chain roller guide rail or over which the drag roller of a step rolls when the chain roller of the same step over the relevant area of the Chain roller guide rail rolls.
  • the chain roller guide rail can have a lesser curvature in the intermediate curvature region than the drag roller guide rail in an associated region.
  • the chain roller guide rail is preferably curved approximately in the middle of the transition area, preferably less strongly than the drag roller guide rail in the associated area.
  • the chain roller guide rail can even be flat in the area of curvature in between, ie have a curvature of zero.
  • the chain roller guide rail can be strongly curved in its border areas, in particular more strongly than associated regions of the drag roller guide rail, but can run flat in the curvature region in between.
  • the curvatures in the boundary areas and the area between them are formed in the same directions or the area between them is not bent, i.e. just.
  • the intermediate area is slightly curved in an opposite direction, i. both boundary areas are convexly curved and the area in between is slightly concave at least in partial areas.
  • the chain roller guide rail and the drag roller guide rail in the transition area can be designed with different curvatures relative to one another that a step when driving through of the transition area coming from the upper horizontally extending area is initially moved tilting away with its front tooth structure from the rear tooth structure of the adjacent step and is then tilted in the opposite direction towards the rear tooth structure of the adjacent step.
  • the opposing toothed structures of both steps can be moved towards each other in a suitable manner, reducing a horizontal gap between them, and then meshing with each other without damage to be retracted.
  • the adjacent ribs and intervening grooves of the front tooth structure and the rear tooth structure preferably have a conical cross section.
  • the conical cross-sections of ribs and grooves can have a flank angle between 0.5 ° and 10 °, preferably between 1 ° and 5 °, particularly preferably 3 °.
  • Fig. 1 shows an exemplary escalator 1, with the aid of which people can be transported, for example, between two levels E1, E2.
  • the escalator 1 has several steps 3, which are arranged one behind the other and which, with the help of two annularly closed conveyor chains 5 parallel to each other in the horizontal direction (in Figure 1 only one visible) can be shifted in opposite directions of movement 6 along a travel path.
  • Each step 3 is attached to one of the conveyor chains 5 near its lateral ends.
  • the escalator 1 has a drive arrangement 19 (which is shown in FIG Figure 1 is only indicated very schematically) with at least partially driven deflection or chain wheels 15, 17.
  • the chain or deflection wheels 15, 17 and other load-bearing components of the escalator 1 are held on a load-bearing structure (partially in Fig. 5 and 6th shown, but in Fig. 1 not shown for reasons of clarity), which is usually designed in the form of a truss structure.
  • the escalator 1 also has a handrail 21.
  • the steps 3 are moved during an upward-conveying activity in advance from a lower horizontally running area 9 adjacent to the lower level E1 via a middle inclined area 11 to an upper horizontally running area 13 adjacent to the upper level E2 and then in Reverse moved back in the opposite direction.
  • each step 3 has a step surface 23 which is directed upward in advance.
  • a setting surface 25 on a rear edge of the step 3, which runs downwards transversely to the step surface 23.
  • the step 3 has a chain roller 27 below its front end and a drag roller 29 below its rear end.
  • the chain roller 27 is in In a direction orthogonal to the step surface 23, it is arranged at a smaller distance from the step surface 23 than the drag roller 29.
  • a front toothed structure 33 with ribs 35 and grooves 37 lying in between is formed on a front face 31 directed forward and running transversely to the tread surface 23.
  • a rear toothing structure 41 complementary thereto is also formed with ribs 43 and grooves 45 lying in between, as in FIG Fig. 2 (c) in a proportion to the Fig. 2 (a) 90 ° rotated sectional view can be seen.
  • steps 3 of the escalator 1 are typically guided in such a way that their front and rear toothed structures 33, 41 mesh with one another, i.e. combing, engage in one another and thus design a gap between adjacent steps 3 to minimize and meander.
  • steps 3 in conventional escalators 1 are guided at a sufficient distance from one another in order to avoid a combing engagement of adjacent steps 3 that was previously considered to be at least risky.
  • a leading step 3 'and an adjacent, trailing step 3 "with their front and rear toothed structures 33, 41 can only be brought together in a way in which the front face 31 of the trailing step 3" is a rear edge area 47 approaches the leading step 3 'from below.
  • a front edge area 48 of the trailing step 3 ′′, which adjoins the front end face 31 first moves approximately horizontally and then approximately vertically relative to the tread surface 23 of the leading step 3 ′ in its rear edge area 47.
  • FIG Fig. 4 A corresponding relative movement of the adjacent steps 3 ', 3 "is shown in FIG Fig. 4 illustrated with the aid of arrow 51.
  • the trailing step 3 ′′ is initially appropriately tilted relative to the leading step 3 ′ during the successive approach, so that its front edge area 48 is shifted vertically and no longer below the tread 23 in the leading step 3 ′ but above the rear edge area 47 of the tread 23 and horizontally behind the seating surface 25 the leading step 3 'comes to rest.
  • FIG Fig. 5 A corresponding relative movement of adjacent steps 3 of an escalator 1 according to the invention is shown in FIG Fig. 5 as well as the Fig. 6 (a) to (d) illustrated.
  • FIG. 6 (a) to (d) illustrated A corresponding relative movement of adjacent steps 3 of an escalator 1 according to the invention is shown in FIG Fig. 5 as well as the Fig. 6 (a) to (d) illustrated.
  • Fig. 5 as Fig. 6 (a) to (d) represent an upper area of a travel path of the escalator 1 in a chronological sequence, during which the steps 3 are guided in the direction of movement 6 ′′ in the return from the upper horizontal area 13 to the central inclined area 11. Treads 3 are arranged one behind the other numbered with letters from A to F and proceeding from the in Fig. 5 or.
  • Fig. 6 (a) corresponds thereby Fig. 5 , whereby some of the in Fig. 5 registered names have been omitted.
  • Each of the steps 3 is guided with the aid of a guide rail arrangement 55 as it moves along the travel path.
  • the chain rollers 27 attached to the front of a step 3 run along a chain roller guide rail 57, whereas the drag rollers 29 attached to the rear of the step 3 are each guided along a drag roller guide rail 59.
  • One chain roller guide rail 57 and one drag roller guide rail 59 is arranged laterally adjacent to the travel path, that is to say adjacent to one of the lateral edges of the steps 3.
  • the chain roller guide rail 57 and the drag roller guide rail 59 are spaced apart from one another in a height direction H, that is to say transversely to their direction of longitudinal extent.
  • the chain roller guide rail 57 and the drag roller guide rail 59 run parallel to one another.
  • a distance H 1 between the two guide rails 57, 59 in the upper horizontally extending area 13 is significantly greater than a distance H 2 in the central inclined area 11, for example more than 50% greater, preferably more than twice as large.
  • a height h of the load-bearing structure 53 in the central inclined area 11 can be smaller than in conventional escalators 1, so that the escalator 1, due to its overall smaller design, requires a smaller installation space within a building and can also have a lower weight.
  • the chain roller guide rail 57 and the drag roller guide rail 59 have clearly differently curved courses. While the drag roller guide rail 59 is essentially curved with a uniform radius of curvature R 4 or is at least curved in such a way that its curvature assumes a maximum radius of curvature R 4 approximately in the center of the transition area 61, the chain roller guide rail 57 has three different partial areas with different Curvatures R 1 , R 2 and R 3 .
  • This first curvature region K R1 which is close to the border, preferably also spans a kink K at which the horizontal part of the framework, which forms the supporting structure 53, merges into a part of this framework that runs at an incline.
  • An opposite, second curvature region K R2 close to the border, at which the transition region 61 adjoins the central inclined region 11, has a second curvature R 2 , which can also be greater than the curvature R 4 in an associated region of the drag roller guide rail 59 which, however, is at least greater than a curvature R 3 in the intermediate curvature region Kz.
  • the curvature is significantly less than in the two adjacent curvature regions K R1 and K R2 close to the border, and in particular less than the curvature R 4 of the drag roller guide rail.
  • the area of curvature Kz lying in between can be approximately flat, ie have no curvature or a curvature with an infinite radius of curvature.
  • a step 3 such as the step with the designation C coming from the upper horizontally running area 13 and entering the transition area 61 is initially tilted counterclockwise, since in the curvature area K R1 close to the border the distance between the Chain roller guide rail 57 and the drag roller guide rail 59 initially enlarged. However, this distance then decreases again in the further course when the step 3 runs through the curvature region Kz lying in between. As a result, step 3 is then tilted clockwise. At the same time, the step 3 is guided by the guide rail arrangement 55 in such a way that it approaches a leading step 3.
  • a gap s between the front face 31 of the one step 3 and the setting surface 25 of the adjacent step 3 is successively smaller, so that the tooth structure 33 of the front face 31 approaches the tooth structure 41 on the setting surface 25 in the horizontal direction and finally meshes with it intervenes.
  • steps 3 While passing through the transition area 61, adjacent steps 3 are guided and tilted relative to one another and relative to the supporting structure 53 in such a way that they do not collide with the supporting structure 53, in particular in the area of its kink K.
  • the steps 3 should be brought together in an essentially horizontal direction in such a way that the end face 31 of a trailing step is not brought up to the adjacent step, in particular to its setting surface 25, from below, but from behind.
  • the adjacent ribs 35, 43 and intervening grooves 37, 45 of the front toothing structure 33 and the rear toothing structure 41 can preferably have a conical cross section to support the intermeshing insertion.
  • the intermeshing insertion there is at most a contact between the lateral flanks of the ribs 35, 43 of two adjacent steps 3, which are aligned with one another as a result of the resulting transverse forces.
  • the conical cross-sections of ribs 35, 43 and grooves 37, 45 can have a flank angle ⁇ , ⁇ between 0.5 ° and 10 °, preferably between 1 ° and 5 °, particularly preferably 3 °.
  • the two flank angles ⁇ , ⁇ be designed differently from each other.
  • both the chain roller guide rail 57 and the drag roller guide rail 59 can each have a design with three different areas of curvature K R1 , K R2 , Kz in order to achieve that by means of the proposed special design of the guide rail arrangement (55) at least the toothed structures (33, 41) of adjacent steps (3) are also arranged in a meshing manner in the middle, inclined region (11) of the return.

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  • Escalators And Moving Walkways (AREA)
  • Types And Forms Of Lifts (AREA)
EP17794914.6A 2016-10-31 2017-10-20 Fahrtreppe mit im rücklauf ineinander kämmend eingreifenden trittstufen Active EP3532422B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17794914T PL3532422T3 (pl) 2016-10-31 2017-10-20 Schody ruchome z zazębiającymi się stopniami w ruchu powrotnym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16196543 2016-10-31
PCT/EP2017/076803 WO2018077730A1 (de) 2016-10-31 2017-10-20 Fahrtreppe mit im rücklauf ineinander kämmend eingreifenden trittstufen

Publications (2)

Publication Number Publication Date
EP3532422A1 EP3532422A1 (de) 2019-09-04
EP3532422B1 true EP3532422B1 (de) 2020-12-09

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EP17794914.6A Active EP3532422B1 (de) 2016-10-31 2017-10-20 Fahrtreppe mit im rücklauf ineinander kämmend eingreifenden trittstufen

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Country Link
US (1) US10800639B2 (pt)
EP (1) EP3532422B1 (pt)
KR (1) KR102399371B1 (pt)
CN (1) CN109890743B (pt)
AU (1) AU2017349993B2 (pt)
BR (1) BR112019006672A2 (pt)
CL (1) CL2019000937A1 (pt)
ES (1) ES2843899T3 (pt)
MX (1) MX2019005023A (pt)
PL (1) PL3532422T3 (pt)
RU (1) RU2753089C2 (pt)
SG (1) SG11201902746PA (pt)
TW (1) TWI802549B (pt)
WO (1) WO2018077730A1 (pt)

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WO2018077730A1 (de) 2018-05-03
BR112019006672A2 (pt) 2019-06-25
ES2843899T3 (es) 2021-07-20
US20190263633A1 (en) 2019-08-29
AU2017349993A1 (en) 2019-05-02
MX2019005023A (es) 2019-06-20
EP3532422A1 (de) 2019-09-04
CL2019000937A1 (es) 2019-07-26
RU2753089C2 (ru) 2021-08-11
RU2019113337A (ru) 2020-10-30
TWI802549B (zh) 2023-05-21
US10800639B2 (en) 2020-10-13
CN109890743A (zh) 2019-06-14
CN109890743B (zh) 2020-05-12
TW201823138A (zh) 2018-07-01
KR20190070929A (ko) 2019-06-21
RU2019113337A3 (pt) 2020-12-21
SG11201902746PA (en) 2019-05-30
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