EP2190773B1 - Verfahren zum aufbringen einer antirutschbeschichtung auf fahrsteige bzw. fahrtreppen - Google Patents

Verfahren zum aufbringen einer antirutschbeschichtung auf fahrsteige bzw. fahrtreppen Download PDF

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Publication number
EP2190773B1
EP2190773B1 EP08787230.5A EP08787230A EP2190773B1 EP 2190773 B1 EP2190773 B1 EP 2190773B1 EP 08787230 A EP08787230 A EP 08787230A EP 2190773 B1 EP2190773 B1 EP 2190773B1
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EP
European Patent Office
Prior art keywords
pallets
powder material
steps
slip coating
carbide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08787230.5A
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German (de)
English (en)
French (fr)
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EP2190773A1 (de
Inventor
Marcus Heuberger
Daniel Bruderer
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Inventio AG
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Inventio AG
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Priority to EP08787230.5A priority Critical patent/EP2190773B1/de
Priority to PL08787230T priority patent/PL2190773T3/pl
Publication of EP2190773A1 publication Critical patent/EP2190773A1/de
Application granted granted Critical
Publication of EP2190773B1 publication Critical patent/EP2190773B1/de
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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material

Definitions

  • the invention relates to a method for applying an anti-slip coating on steps or pallets an escalator or moving walk with a step belt with steps or with a pallet belt with pallets for the transport of persons and / or objects.
  • Driving devices in the sense of the invention which can also be referred to as conveyors, are escalators and moving walks with a plurality of tread units or steps or moving floor pallets, which are connected to an endless conveyor. Users of the driving devices stand on treads of the stepping units or steps or they travel on the moving platform pallets or escalator steps in the same direction of movement as the driving devices drive or travel.
  • steps or pallets are used. These steps or pallets are usually provided with ribs in the well-known manner. Despite these ribs, the steps or pallets are slippery. If the conveyor is located outside or in an area located near an outside door, the steps or pallets may become wet or dusty. In various cases or in the fall leaves or mud or sand or ground or debris or dust can reach the conveyor. Especially in these situations, the steps or pallets prove particularly slippery and dangerous.
  • JP-A-2003 095568 discloses a moving walk with a pallet band, wherein the pallets are made of metal and provided with an anti-slip coating.
  • Fluororesin coated steps or pallets have proven too expensive. However, there have been additional problems, such as a lack of durability, since the fluororesin tends to wear quickly and to be easily removed. The work of disassembling the entire escalator and removing the steps to be repaired will be needed to rebuild the removed fluororesin. This results in increased maintenance costs and, above all, the escalator or moving walk is not ready for use during such maintenance.
  • the invention as characterized in claim 1, solves the problem by a special type of coating is chosen, which is significantly thinner contrary to the previous approaches. That is, according to the invention, one goes in a direction that should not actually be successful, since the skilled person would rather apply a thicker layer to increase the effect and the durability.
  • Fig. 1 shows an escalator 1, which connects a first floor E1 with a second floor E2.
  • the escalator 1 has a step band consisting of stages 4. In the case of a moving walk 1, as in Fig. 2 shown, this has an existing pallets 4 pallet strip.
  • a handrail 3 is arranged on a balustrade 2 which is held at the lower end by means of a balustrade pedestal.
  • Figure 3 shows a schematic representation of a pallet or step on which between two to six strips anti-slip coating 4.1 are applied or sprayed from carbide.
  • Figure 4 shows a pallet 4 with an anti-slip coating 4.1 made of a hard metal layer, in the carbide hard materials (tungsten carbide, chromium carbide, titanium carbide, nickel carbide or silicon carbide) in a metallic matrix are stored.
  • the carbide layer is on the tread area of the pavement pallet 4, over the entire length, applied.
  • two longitudinal carbide strips are sprayed on.
  • Figure 5 shows an end portion E1, E2 and a head portion of a moving walk 1 or escalator 1 with anti-slip coating 4.1, which is applied to the pallets 4 and 4 stages.
  • an anti-slip coating 4.1 is available in strips on the ridges. This version provides optimal protection against sliding away or slipping.
  • the carbide layer is sprayed or sprayed in two to six strips per bottom cover 9 or comb plate 7, 8.
  • Figure 6 shows the schematic representation of the comb plates 7.8 and the bottom covers 9 with anti-slip coating 4.1 carbide.
  • the hard metal layer 4.1 made of carbide hard material, clings to the metal parts or aluminum parts and deposits in the existing metallic matrix.
  • the surface of the components or metal parts is fine-grained and weather-resistant, enclosed by the anti-slip coating 4.1. This is applied in strips by means of a high-speed flame spraying process. This creates a non-slip surface that prevents excellent slipping or slipping.
  • conveyor is used instead of the term "escalator" or "moving walk”.
  • a metallic powder material is accelerated and heated by means of an injection process. Then, a jet of the heated and accelerated powder material is directed onto the surface to be coated by means of a spray gun. This is done so that when hitting the metal surface to be coated or alloy surface or aluminum surface, a homogeneous and fine-grained layer of a carbide hard material results, which is embedded in the metallic matrix.
  • the metallic powder material used is preferably a material comprising tungsten and / or chromium and / or titanium and / or nickel and / or silicon.
  • a high-speed flame spraying process in which a mixture of oxygen and a fuel, preferably a fuel gas (propane or propylene), is used to heat and accelerate the powder material.
  • a fuel gas propane or propylene
  • a liquid fuel for example kerosene
  • the spray material is conducted using nitrogen as a carrier gas in powder form coaxially through a nozzle, enveloped by the flame and therefore uniformly melted, and passed out of the spray gun.
  • the powder material is sprayed onto the metal workpiece or alloy workpiece or aluminum workpiece to be coated at very high speed.
  • the heat to melt the powder material is generated by the reaction of oxygen and fuel (eg propane, propylene, natural gas, hydrogen, kerosene) in the combustion chamber.
  • oxygen and fuel eg propane, propylene, natural gas, hydrogen, kerosene
  • the temperatures reached in the flame are up to about 3000 - 4000 ° C, so that the powder material can be sprayed.
  • the gas expands and accelerates the powder material up to speeds of 400-900 m / s.
  • the workpiece surface ie the metal surface or the alloy surface or the aluminum steps or pallets 4 need not be previously sandblasted or roughened, because when hitting the powder material on the workpiece a kind of welding, respectively an adhesive bond and clamping, between powder material and workpiece takes place. Due to the high speed of the powder high-speed flame spraying achieves good adhesion of the metallic powder to the workpiece and low porosity. In addition, by choosing a suitable metallic powder, a better material can be produced or established which is perfectly suitable as anti-slip material. As a result, the base material (brass, copper, NIROSTA, steel, magnesium, aluminum) of grade 4 or pallet 4 is upgraded and perfected without errors.
  • tungsten, chromium, titanium, nickel or silicon is used as the metallic powder
  • high-speed flame spraying produces optimal layers of tungsten carbide, chromium carbide, titanium carbide, nickel carbide or silicon carbide.
  • the layer thickness according to the invention is preferably less than 0.08 mm to 0.2 mm. The porosity of the layers goes to zero.
  • the layers formed in the process according to the invention are denser and adhere more firmly than in other spraying processes such as commercial flame spraying, arc spraying or plasma spraying.
  • the inventive method is particularly well suited for hard metal layers in which carbide hard materials (Tungsten carbide, chromium carbide, titanium carbide, nickel carbide or silicon carbide) are embedded in a metallic matrix. It can be produced layers that are characterized by high wear resistance and / or stability or durability and / or resistance or durability or constancy.
  • carbide hard materials Tungsten carbide, chromium carbide, titanium carbide, nickel carbide or silicon carbide
  • the effluent gas jet is used to melt and reflow the individual particles of the metallic powder material and accelerate to a high speed, which is about four to five times greater than conventional flame spraying.
  • the high speed flame spraying process very effectively utilizes the high kinetic energy of the powder material and, to a limited extent, thermal energy to produce dense, compact layers with low porosity and high adhesive strength.
  • Some of the layers thus produced have an adhesive tensile strength of more than 83 MPa (equivalent to about 83 N / mm 2) and an extremely fine-grained surface.
  • the process uses a mixture of oxygen and a fuel which is supplied either in gaseous form or as liquid fuel. Therefore, there are two types of spray systems: the gas powered systems use propylene, propane, hydrogen or natural gas; Kerosene is used in the liquid fuel systems.
  • the corresponding fuel is carefully mixed with oxygen within the spray gun, exits through a nozzle and is ignited there.
  • the powder material is preferably coaxially passed through this nozzle using nitrogen as a carrier gas in powder form, enveloped by the flame and therefore melted uniformly.
  • the powder particles are accelerated and fired with very high kinetic energy but moderate temperature on the workpiece surface or sprayed or sprayed.
  • these layers have a predictable chemical composition and are almost homogeneous.
  • the layers have a fine-grained structure.
  • the anti-slip coating according to the invention offers excellent protection of the steps 4 or pallets 4 and on the other hand a coating which does not or hardly wears off in the anti-slip effect even after prolonged use.
  • the thickness of the carbide layer remains the same for at least 5 to 10 years and there is no erosion or weathering or corrosion tendency.
  • the new coating allows the standard - EN 115: Safety rules for the construction and installation of escalators and moving walkways, as well as the AN - American National Standard - ASME A17.1-2004: Safety code for elevators and escalators. Further investigations show that also the DIN 51130 with the highest friction coefficient R13 is fulfilled.
  • the anti-slip coating excellently prolongs the life of the coated components.
  • the anti-slip coating has a very fine-grained surface, a uniform composition and low porosity even after coating and is considered to be finished. That is, it requires no further processing step or any further surface treatment.
  • the carbide layers according to the invention are characterized by a high hardness of almost 1400 HV (Vickers hardness).
  • FIG. 3 Particularly preferred is an embodiment of the invention, which in Figure 3 is shown.
  • the complete surface is coated, but only a number of strips 4.1 (preferably between two to six strips per pallet or step) with strip widths of 20mm to 75mm are applied. This measure reduces the amount of powder material used. The anti-slip effect is still sufficient, since the strips 4.1 provide sufficient adhesion.
  • the theoretical angle of inclination on the pallet 4 or on the level 4 or on the bottom cover 9, without slipping can be markedly increased in comparison with known solutions. Consequently, the theoretical inclination angle on the pallet 4 or at the stage 4 can increase from 11 degrees to well over 40 degrees in inclination because the carbide layer excellently prevents slippage. Furthermore, when wet and / or pollution (dust, mud, sand drift or sand, soil, debris, leaves) a sliding away or slipping through the carbide layer best avoided or prevented.
  • the invention can be equally applied to escalators and moving walks.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Escalators And Moving Walkways (AREA)
EP08787230.5A 2007-08-24 2008-08-14 Verfahren zum aufbringen einer antirutschbeschichtung auf fahrsteige bzw. fahrtreppen Active EP2190773B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08787230.5A EP2190773B1 (de) 2007-08-24 2008-08-14 Verfahren zum aufbringen einer antirutschbeschichtung auf fahrsteige bzw. fahrtreppen
PL08787230T PL2190773T3 (pl) 2007-08-24 2008-08-14 Sposób nanoszenia powłoki antypoślizgowej na pochylnię ruchomą lub schody ruchome

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07114989 2007-08-24
EP08787230.5A EP2190773B1 (de) 2007-08-24 2008-08-14 Verfahren zum aufbringen einer antirutschbeschichtung auf fahrsteige bzw. fahrtreppen
PCT/EP2008/060700 WO2009027241A1 (de) 2007-08-24 2008-08-14 Fahrsteige bzw. fahrtreppen mit antirutschbeschichtung sowie verfahren zum aufbringen einer antirutschbeschichtung

Publications (2)

Publication Number Publication Date
EP2190773A1 EP2190773A1 (de) 2010-06-02
EP2190773B1 true EP2190773B1 (de) 2013-12-25

Family

ID=39048996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08787230.5A Active EP2190773B1 (de) 2007-08-24 2008-08-14 Verfahren zum aufbringen einer antirutschbeschichtung auf fahrsteige bzw. fahrtreppen

Country Status (7)

Country Link
US (1) US20110129612A1 (pl)
EP (1) EP2190773B1 (pl)
CN (1) CN101784471B (pl)
BR (1) BRPI0815902B1 (pl)
ES (1) ES2454246T3 (pl)
PL (1) PL2190773T3 (pl)
WO (1) WO2009027241A1 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101444617B1 (ko) * 2013-08-23 2014-09-26 롯데쇼핑주식회사 미끄럼방지, 표면강화 처리된 에스컬레이터 및 무빙워크 팔레트
CN107541695A (zh) * 2017-06-12 2018-01-05 扬州大学 一种浮动夹钳防滑涂层的制备方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247947A (en) * 1963-07-02 1966-04-26 Westinghouse Electric Corp Passenger conveyors
US5194338A (en) * 1988-03-04 1993-03-16 Ethyl Corporation Preceramic composition containing silicon based powder
JPH04106090A (ja) * 1990-08-27 1992-04-08 Toshiba Corp マンコンベア用踏板
US5148986A (en) * 1991-07-19 1992-09-22 The Perkin-Elmer Corporation High pressure thermal spray gun
US5368947A (en) * 1991-08-12 1994-11-29 The Penn State Research Foundation Method of producing a slip-resistant substrate by depositing raised, bead-like configurations of a compatible material at select locations thereon, and a substrate including same
US5268045A (en) * 1992-05-29 1993-12-07 John F. Wolpert Method for providing metallurgically bonded thermally sprayed coatings
US5527591A (en) * 1994-12-02 1996-06-18 Augat Inc. Electrical contact having a particulate surface
US5834066A (en) * 1996-07-17 1998-11-10 Huhne & Kunzli GmbH Oberflachentechnik Spraying material feeding means for flame spraying burner
JPH11157768A (ja) * 1997-11-25 1999-06-15 Hitachi Building Systems Co Ltd エスカレータの踏段
JP2003095568A (ja) * 2001-09-25 2003-04-03 Hitachi Ltd 乗客コンベアの踏板
JP3889257B2 (ja) * 2001-09-28 2007-03-07 株式会社日立製作所 乗客コンベア
JP2003182992A (ja) * 2001-12-21 2003-07-03 Nippon Yusoki Co Ltd フォークリフトのフォーク
CN1554798A (zh) * 2003-12-26 2004-12-15 中国科学院上海硅酸盐研究所 等离子喷涂碳化硼涂层材料的制备方法
CN2685303Y (zh) * 2004-02-07 2005-03-16 吴榆生 不锈钢防滑踏板
FI116563B (fi) * 2004-04-22 2005-12-30 Kone Corp Liukukäytävän tai vastaavan palettijärjestely
CN1306059C (zh) * 2004-08-20 2007-03-21 四川大学 等离子喷涂制备纳米涂层的方法
JP2007210714A (ja) * 2006-02-07 2007-08-23 Mitsubishi Electric Corp マンコンベアの踏板

Also Published As

Publication number Publication date
BRPI0815902B1 (pt) 2020-11-10
WO2009027241A1 (de) 2009-03-05
ES2454246T3 (es) 2014-04-10
CN101784471A (zh) 2010-07-21
PL2190773T3 (pl) 2014-05-30
US20110129612A1 (en) 2011-06-02
CN101784471B (zh) 2013-07-03
EP2190773A1 (de) 2010-06-02
BRPI0815902A2 (pt) 2015-02-24

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