EP2200923B1 - Gradin pour escalier roulant ou palette pour trottoir ainsi qu'escalier roulant doté d'un tel gradin - Google Patents

Gradin pour escalier roulant ou palette pour trottoir ainsi qu'escalier roulant doté d'un tel gradin Download PDF

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Publication number
EP2200923B1
EP2200923B1 EP08804833.5A EP08804833A EP2200923B1 EP 2200923 B1 EP2200923 B1 EP 2200923B1 EP 08804833 A EP08804833 A EP 08804833A EP 2200923 B1 EP2200923 B1 EP 2200923B1
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EP
European Patent Office
Prior art keywords
deep
sheet metal
radius
millimetres
step according
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EP08804833.5A
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German (de)
English (en)
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EP2200923A1 (fr
Inventor
Michael Matheisl
Thomas Novacek
Kurt Streibig
Andreas Trojer
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Inventio AG
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Inventio AG
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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

Definitions

  • the invention relates to a step for an escalator, with a step frame made of sheet metal parts as a support for at least one tread element and at least one setting element, wherein the setting element has a made of a deep-drawn sheet web / groove profile with ridges and grooves and seen each ridge of the setting element underside has a cavity and the setting element is arcuate.
  • the step includes a tread element having a plurality of horizontally extending ledges and a seating member having a plurality of vertically extending ledges.
  • the strips of the tread element mesh with the strips of the setting element of the adjacent step, the gap width being dependent on the relative position of the adjacent steps.
  • GB 2173757 discloses a step for an escalator.
  • a stage of the type mentioned is from the US 6978876 B, see in particular the FIGS. 5 and 6 , With the skeletal plate construction of the step, weight savings and significant cost savings are feasible.
  • a step performs a relative movement relative to the adjacent steps in the vertical direction, in particular during the transition from the inclined escalator section to the horizontal escalator section.
  • the step structure of the escalator is thereby converted into a planar structure or band structure.
  • the height difference between two adjacent stages continuously changes from the maximum value to zero.
  • the relative movement is generated by a corresponding course of the guideways for the step rollers and chain rollers.
  • the step has - cut in the direction of travel - about a triangular cross-section.
  • the setting element is not flat, but as Cylinder wall section, so in cross section circular arc, so that the step cut in the direction of travel has the shape of a circular sector rather than a triangle.
  • the gap between two stages is not constant, but varies depending on how large the height difference between two adjacent stages is.
  • the step gap between the tread element and the adjacent setting element thus remains according to the invention regardless of the position of the step gap always almost the same size.
  • the risk of accidents or the risk of entrapment for clothing, sharp objects, shoes, children's fingers and so on is substantially reduced.
  • the step gap is no longer on, but also there is always the same size.
  • Lighter steps also mean smaller drive power for the escalator drive.
  • the essential components of the steps such as step cheeks, tread element and setting element are made by means of a deep-drawing process of very thin deep-drawn sheet metal.
  • the stage meets the requirements and stress tests of the European standard EN 115 and the American standard ASME A17.1, according to which the stage must satisfy a static test and a dynamic test.
  • the step is centrally loaded with a force acting perpendicular to the tread element of 3000 N, with a deflection of at most 4 mm may occur. After the force has been applied, the step must not show any permanent deformation.
  • the stage is centered with a pulsating force, with the force varying between 500 N and 3000 N, with a frequency between 5 Hz and 20 Hz and at least 5x10 6 cycles.
  • the step may have a permanent deformation of not more than 4 mm.
  • the components of a held by unwinding and unwindable sheet metal roll for example, 2 m to 4 m diameter, hereafter called sheet metal coil, can be produced optimized production.
  • the workflow can be made interruption-free and production time can be further reduced.
  • a step with a skeletal or frame-like sheet metal construction is lighter and significantly less expensive than a die-cast aluminum step, especially when the price of aluminum increases.
  • a 600 mm wide stage weighs about 8.6 kg
  • a 800 mm wide stage weighs about 10.8 kg
  • a 1000 mm wide stage weighs about 13.1 kg.
  • An optimized to minimum weight and maximum load according to the above-mentioned standard EN 115 level is feasible with thin thermoforming sheets, for example, 1.1 to 1.9 mm thickness, which by means of deep drawing process a maximum stiffening of allow supporting components. Embossing or bending process would also be conceivable, but the finished stage would be much heavier, because in this manufacturing process larger sheet thicknesses (at least 4 mm sheet thickness) are necessary.
  • the setting made of thin, for example, 0.25 to 1.25 mm thickness to 10 to 15 mm deep-drawn deep-drawn sheet has with its web / groove profile sufficient rigidity at extreme loads. Despite increased rigidity, the weight of the tread element remains small.
  • the setting element weighs 0.7 kg for a step width of 600 mm, 0.9 kg for a step width of 800 mm and 1.1 kg for a step width of 1000 mm.
  • the setting element according to the invention can also be used in stages which, instead of the middle cheeks, have bridge-like cross members connecting the side cheeks.
  • a stamp presses a sheet metal blank into a prefabricated die, wherein the edge of the sheet metal blank is held by means of a hold-down.
  • a temporary plastification and strain hardening takes place below the hold-down the thermoforming sheet.
  • the soil can be formed in further process steps, for example by means of hydraulic depths in the stamp or in the die. In the embodiment set out below, the cheeks eyes are made.
  • the edge of the walls is separated by trimming, for example by means of knife, punch, water jet or laser.
  • the deep-drawn sheet has to be specially created for the forming.
  • a deep-drawn sheet with the designation H380 or H400 is used.
  • These steel grades are based essentially on the strength-increasing effect of micro-alloying additives such as niobium and / or titanium and / or manganese. The yield strengths of these steels, which are high compared to mild steels, allow for cold forming with low deformation stress up to very demanding and complex component formations.
  • the steel grades are adapted to the respective forming conditions, so that even with low sheet thicknesses the tendency to deformation-related constrictions, wrinkles, tearing or inaccurate shape due to elastic recoil is minimal.
  • the deep drawing process is characterized by a large ratio of the sheet thickness to the height of the deep-drawn wall and the associated high load capacity, dimensional accuracy and stability.
  • the step skeleton 2 consists of a first cheek 3, at least one middle cheek 4 and a second cheek 5.
  • First and second cheek 3.5 are also called side cheek and are arranged in mirror image.
  • the cheeks 3,4,5 are arranged in the direction of travel.
  • a support 6, a bridge 7 and a bracket 8 extend transversely to the direction of travel and connect the cheeks 3,4,5, wherein the components are screwless, for example, connected by means of spot welding. Cheeks 3,4,5, support 6, bridge 7 and console 8 form the step skeleton 2.
  • the components carrier 6, bridge 7 and console 8 are away from the Blechcoil means of a Rollumformhabilits endless, for example, with a production speed of 10 to 20 meters per minute manufactured and cut to length depending on the step width.
  • the components beam 6, bridge 7 and console 8 stainless steel sheet or zinc sheet or copper sheet or brass sheet is provided with a thickness of 1.8-3.3 mm.
  • Other building materials such as synthetic fiber composites or natural fiber composites or CFRP, GRP plastics are also possible.
  • a step roller 9 and an emergency guide hook 10 are arranged at the first cheek 3.
  • a stepped roller 11 and an emergency guide hook 12 are arranged on the second cheek 5.
  • the step roller 9,11 leads the level 1 along a guideway of the escalator.
  • the emergency guide hook 10,12 is supported in case of failure of the step roller 9,11 on an emergency guide the escalator and forces the level 1 back to the track.
  • the stage 1 is connected by means of a stepped axis 13 with the step chain of the escalator.
  • the stepped axis 13 is constructed in several parts.
  • An axle journal 14 made of a round material is rotatably supported in a sleeve 15 of the center cheek 4 serving as a sliding bearing.
  • On the first cheek 3 serving as a plain bearing bush 16 is arranged, wherein a first driving axle 17 is rotatably mounted at one end in the bushing 16 and the other end is connected by a bridge 18 with the journal 14 of the center cheek 4.
  • a second driving axle 20 is rotatably mounted at one end in the sleeve 19 and the other end is connected by means of a bridge 21 with the journal 14 of the center cheek 4.
  • the driving axles 17, 20 are produced away from the sheet metal coil by means of a roll forming method and cut to length depending on the step width.
  • the stage 1 is thus supported at one end by the chain rollers and at the other end by the step rollers 9, 11.
  • Fig. 2 shows the complete stage 1 seen from below, in which the step skeleton 2 has been supplemented with a tread element 22, a step edge 23 and a setting element 24.
  • the tread element 22 and / or the setting element 24 may also consist of more than one part.
  • the one-piece tread element 22 or the one-piece setting element 24 seen longitudinally in the direction of travel and / or be divided transversely thereto.
  • the tread element 22 as well as the setting element 24 is produced in two steps. In a first step, the sheet drawn from the sheet metal coil is directed and by means of a toothed shaft to about 50% preformed or pre-corrugated and then cut to length depending on the appearance.
  • the preformed component is formed by means of deep drawing process to the final web / groove profile with webs and grooves.
  • the sheet BO1 of the setting element 24 is produced in the same deep-drawing process at once.
  • the tread element 22 as well as the setting element 24 can also be deep-drawn in one step, wherein 3 to 10 webs and grooves are deep-drawn, then the thermoforming sheet is pushed further and again deep-drawn 3 to 10 webs and grooves and so on.
  • a deep-drawn sheet for example, 0.25 to 1.25 mm thickness is deep drawn to 10 to 15 mm.
  • the web / groove profile of the tread element 22 has on the carrier side on each second web a small tooth 25 which meshes with the web / groove profile of the positioning element 24 of the adjacent step. The gap between the steps is thereby projecting and springing back.
  • step 23 is placed on the bridge 7 and screwed from below with the bridge 7, for example, or riveted or glued or verclincht or plugged.
  • Other materials such as plastic, natural fibers, synthetic fibers, GRP, CRP or NIRO and also colors like yellow, red, black, blue or mixed colors are possible.
  • the step edge 23 is formed so that the tread element 22 as well as the setting element 24 can be inserted into the step edge 23.
  • FIG. 3 shows a side view of the stage 1 seen on the second cheek 5.
  • the tread element 22 is screwless, for example, connected by means of spot welding with the support 6 and the bridge 7.
  • the setting element 24 is pushed into the step edge 23 and screwless, for example, connected by means of spot welding or clinching the console 8.
  • the arc BO1 of the setting element 24 follows in the upper area a first radius R1 and in the lower area a second radius R2, wherein the second radius R2 is smaller than the first radius R1.
  • the arc BO1 can also have more than two different radii.
  • the bow of the BO1 Setzides 24 goes on the line ÜR from one radius to the other radius.
  • the position of the line ÜR is determined by the smallest camber inclination of, for example, 27 °.
  • the step gap SP1 is as small as possible and always almost the same.
  • the step gap SP1 between tread element 22 and setting element 24 of the adjacent stage remains independent of that in the FIG. 6 to FIG. 9 shown position of the step gap SP1 always the same low.
  • the step gap SP1 may be slightly larger or smaller depending on the crawl slope.
  • R1 is 447.5 mm and has its origin at the point labeled 0P1.
  • R2 is 380mm tall and has its origin at the point labeled 0P2.
  • These radii are valid for chain links with a length of 133.33 mm or for a chain pitch of 133 mm.
  • a chain pitch of 200 mm for example, 426 mm results for R1 and for example, 380 mm for R2.
  • 410 mm results for R1 and, for example, 380 mm for R2.
  • the exact location of the origin points 0P1,0P2 is measured.
  • the radii R1, R2 have been determined empirically by experiments and constructions. Further explanations will be provided with the Fig. 5 explained.
  • tread element 22 and / or for the setting element 24 also NIRO (stainless steel), ALU (aluminum), art / natural fiber composites, GRP, CFRP, ceramics, copper, brass, manganese / titanium sheet and so on conceivable.
  • Fig. 4 shows in three-dimensional view, the tread element 22 of the adjacent stage and made of a thermoforming sheet 83 setting element 24 in the gap region, wherein the distance between the tread element 22 and the setting element 24 forms the step gap SP1.
  • the designated 25 teeth of the tread element 22 mesh the web / groove profile 80 of the setting element 24.
  • the web / groove profile 80 of the setting element 24 consists of webs 82 and Grooves 81, each web 82 seen from below (in the direction of the arrow P2) forms a cavity 84, which may be provided for stiffening the setting element 24 with a filling.
  • a tooth 25 extends into an adjacent groove 81 of the setting element 24.
  • the step gap SP1 between the tread element 22 and the setting element 24 is thereby projecting and springing back.
  • the thermoforming sheet formed by deep-drawing sheet 61 forms the ridge / groove profile 66 extending in the direction of travel webs 62 and grooves 63.
  • the webs 62 and grooves 63 form the tread element 22, wherein the webs 62, the tread for the users of the level 1 and the escalator form.
  • Each web 62 forms a cavity 64 when viewed from below (in the direction of the arrow P2).
  • Fig. 5 shows an escalator in the transition from the skew to the straight run.
  • the visible step height is seen in the direction of travel P3 decreasing and is in practicelauf 0 mm height.
  • the step gap SP1 changes its position relative to the setting element 24 of the stage 1 continuously and moves as shown by an arrow P4 from bottom to top.
  • the step gap SP1 is always almost the same size, regardless of whether the escalator forms visible levels 1 or whether the escalator forms a level.
  • the step gap SP1 is very narrow, for example 2.8 mm.
  • Stair formation or leveling is achieved by raceways 71 which guide the stepped rollers 9, 11 and by raceways 72 which guide the chain rollers 73.
  • the transition arc of the raceways 71,72 is BO2 and the radius of the transition arc BO2 is denoted by R3 and at least 1000 mm in size.
  • the step gap SP1 in the transition arc BO2 Due to the deviation of the step chain from the track 72, the step gap SP1 in the transition arc BO2 a little smaller, since the step chain with chain links, for example, 133.33 mm or 200 mm in length forms the bowstring to the transitional bow BO2.
  • the radii R1, R2 of the setting element 24 compensate for these effects on the step gap SP1 shortening. Due to the step geometry and small radius R3 of the transition arc BO2 of, for example, 1000 mm to 1500 mm, the step gap SP1 am smallest. In the rapid increase of the tread element 22, the step chain describes a clear segmentation and forms the largest or strongest tendon. About the transition arc BO2 the step gap SP1 is very much dependent on the construction of the setting element 24 and changeable. In order to achieve the smallest possible step gap SP1, an elevation of the setting element by means of a larger radius R1, for example 447.5 mm, is necessary. In other chain pitches, the radii have a size as stated above.
  • FIG. 6 to FIG. 9 show the sections A2 to A5 the Fig. 5 with the constant step gap SP1 between the setting element 24 and the step element 22 of the adjacent step.
  • Fig. 6 shows the step gap SP1 at full step height.
  • Fig. 7 shows the step gap SP1 at about half the height in the transition area.
  • Fig. 8 shows the step gap SP1 at minimum step height.
  • Fig. 9 shows the step gap SP1 without step height in anank.

Landscapes

  • Escalators And Moving Walkways (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (11)

  1. Marche (1) pour un escalier roulant, avec une ossature de marche (2) fabriquée à partir de pièces de tôle, comme support pour au moins un élément formant marche (22) et au moins un élément formant contremarche (24), étant précisé que l'élément formant contremarche (24) comporte un profilé à nervures/rainures (80) fabriqué à partir d'une tôle d'emboutissage (83), avec des nervures (82) et des rainures (81), et que chaque nervure (82), vue du côté inférieur (P2) de l'élément formant contremarche, présente une cavité (84), et que l'élément formant contremarche (24) a une forme courbe, caractérisée en ce que la courbe (BO1) de l'élément formant contremarche (24) présente au moins deux rayons différents (R1, R2), étant précisé que les zones avec les différents rayons (R1, R2) se prolongent mutuellement dans l'alignement et que les côtés concaves des deux zones sont dirigés vers l'intérieur de la marche.
  2. Marche selon la revendication 1, caractérisée en ce que la courbe (BO1) présente dans la zone supérieure, c'est-à-dire dans la zone voisine de l'élément formant marche, un premier rayon (R1), et dans la zone inférieure un second rayon (R2), le second rayon (R2) étant plus petit que le premier rayon (R1).
  3. Marche selon la revendication 2, caractérisée en ce que le premier rayon (R1) est d'environ 447,5 mm, et le second rayon (R2) d'environ 380 mm.
  4. Marche selon la revendication 2, caractérisée en ce que le premier rayon (R1) est d'environ 426 mm, et le second rayon (R2) d'environ 380 mm.
  5. Marche selon la revendication 2, caractérisée en ce que le premier rayon (R1) est d'environ 410 mm, et le second rayon (R2) d'environ 380 mm.
  6. Marche selon l'une des revendications 1 à 5, caractérisée en ce qu'un espace inter-marches (SP1) restant entre les marches (1) est au maximum de 2,8 mm.
  7. Marche selon l'une des revendications 1 à 6, caractérisée en ce que la tôle d'emboutissage (83) contient des additifs de micro-alliages tels que le niobium et/ou le titane et/ou le manganèse, et que le profilé à nervures/rainures (80), pour une épaisseur de tôle de 0,25 à 1,25 mm, est embouti jusqu'à 10 à 15 mm.
  8. Marche selon l'une des revendications 1 à 7, caractérisée en ce que la limite élastique de la tôle d'emboutissage (83) est située dans la plage de 380 N/mm2 à 520 N/mm2, et la limite de rupture de la tôle d'emboutissage est située dans la plage de 440 N/mm2 à 590 N/mm2.
  9. Marche selon l'une des revendications 1 à 7, caractérisée en ce que la limite élastique de la tôle d'emboutissage est située dans la plage de 790 N/mm2 à 1020 N/mm2, et la limite de rupture de la tôle d'emboutissage est située dans la plage de 900 N/mm2 à 1100 N/mm2.
  10. Marche selon l'une des revendications 1 à 9, caractérisée en ce que l'épaisseur de tôle de la tôle d'emboutissage est de 0,4 mm.
  11. Escalier avec au moins une marche selon l'une des revendications 1 à 10.
EP08804833.5A 2007-10-01 2008-09-26 Gradin pour escalier roulant ou palette pour trottoir ainsi qu'escalier roulant doté d'un tel gradin Active EP2200923B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08804833.5A EP2200923B1 (fr) 2007-10-01 2008-09-26 Gradin pour escalier roulant ou palette pour trottoir ainsi qu'escalier roulant doté d'un tel gradin

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07117651 2007-10-01
PCT/EP2008/062965 WO2009047144A1 (fr) 2007-10-01 2008-09-26 Marche pour escalier mécanique et escalier mécanique comportant une telle marche
EP08804833.5A EP2200923B1 (fr) 2007-10-01 2008-09-26 Gradin pour escalier roulant ou palette pour trottoir ainsi qu'escalier roulant doté d'un tel gradin

Publications (2)

Publication Number Publication Date
EP2200923A1 EP2200923A1 (fr) 2010-06-30
EP2200923B1 true EP2200923B1 (fr) 2016-07-06

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EP08804833.5A Active EP2200923B1 (fr) 2007-10-01 2008-09-26 Gradin pour escalier roulant ou palette pour trottoir ainsi qu'escalier roulant doté d'un tel gradin

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Country Link
US (1) US8220612B2 (fr)
EP (1) EP2200923B1 (fr)
KR (1) KR101488552B1 (fr)
CN (1) CN101815668B (fr)
AU (1) AU2008309742B2 (fr)
BR (1) BRPI0817653B1 (fr)
CA (1) CA2699295C (fr)
ES (1) ES2595352T3 (fr)
HK (1) HK1146032A1 (fr)
MX (1) MX2010003537A (fr)
NZ (1) NZ583997A (fr)
PL (1) PL2200923T3 (fr)
RU (1) RU2487076C2 (fr)
UA (1) UA99926C2 (fr)
WO (1) WO2009047144A1 (fr)
ZA (1) ZA201002844B (fr)

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DE112005003696T5 (de) * 2005-09-16 2009-04-16 Otis Elevator Co., Farmington Optische Überwachung der Kammlinie von Fahrtreppen und Fahrsteigen
ES2411982B1 (es) * 2011-06-24 2014-03-11 Thyssenkrupp Elevator Innovation Center, S.A. Peldaño para escaleras mecánicas y procedimiento de fabricación
CN103213894A (zh) * 2013-04-18 2013-07-24 南通江中光电有限公司 节能环保型自动扶梯梯级
CN105293267B (zh) * 2015-12-03 2017-10-03 南通江中光电有限公司 一种自动扶梯的梯级及其压铸方法
EP3181505B1 (fr) * 2015-12-17 2019-04-03 GF Casting Solutions Suzhou Co. Ltd. Marche formée d'une piece coulée sous pression
EP3181504B1 (fr) * 2015-12-17 2022-02-02 GF Casting Solutions Suzhou Co. Ltd. Élément d'escalier et procédé de fabrication d'un élément d'escalier
CN105537952B (zh) * 2016-01-15 2017-04-12 江苏飞亚金属制品有限公司 梯级的加工方法及装置
DE102016014358A1 (de) 2016-11-24 2018-05-24 Ulf Meyer Rolltreppe und Stufe für eine Rolltreppe

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JPS5918315B2 (ja) * 1978-06-05 1984-04-26 株式会社日立製作所 マンコンベアのステツプ
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JPH0635314B2 (ja) * 1985-03-01 1994-05-11 株式会社日立製作所 マンコンベアの踏板
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JP4187971B2 (ja) * 2002-01-21 2008-11-26 三菱電機株式会社 傾斜部高速エスカレーター

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US20100282570A1 (en) 2010-11-11
AU2008309742B2 (en) 2014-05-29
KR20100080826A (ko) 2010-07-12
ZA201002844B (en) 2012-01-25
BRPI0817653B1 (pt) 2019-11-05
CA2699295C (fr) 2016-01-26
BRPI0817653A2 (pt) 2015-09-29
CN101815668B (zh) 2012-09-05
MX2010003537A (es) 2010-04-14
ES2595352T3 (es) 2016-12-29
RU2487076C2 (ru) 2013-07-10
CN101815668A (zh) 2010-08-25
HK1146032A1 (en) 2011-05-13
PL2200923T3 (pl) 2017-01-31
NZ583997A (en) 2012-09-28
UA99926C2 (ru) 2012-10-25
KR101488552B1 (ko) 2015-02-02
AU2008309742A1 (en) 2009-04-16
RU2010117229A (ru) 2011-11-10
US8220612B2 (en) 2012-07-17
EP2200923A1 (fr) 2010-06-30
WO2009047144A1 (fr) 2009-04-16
CA2699295A1 (fr) 2009-04-16

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