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US20110129612A1 - Moving walkways or escalators having anti-slip coating and method for applying an anti-slip coating - Google Patents

Moving walkways or escalators having anti-slip coating and method for applying an anti-slip coating Download PDF

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Publication number
US20110129612A1
US20110129612A1 US12/674,706 US67470608A US2011129612A1 US 20110129612 A1 US20110129612 A1 US 20110129612A1 US 67470608 A US67470608 A US 67470608A US 2011129612 A1 US2011129612 A1 US 2011129612A1
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US
United States
Prior art keywords
powder material
coating
pallets
steps
spraying
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.)
Abandoned
Application number
US12/674,706
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English (en)
Inventor
Marcus Heuberger
Daniel Bruderer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inventio AG
Original Assignee
Inventio AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Assigned to INVENTIO AG reassignment INVENTIO AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRUDERER, DANIEL, HEUBERGER, MARCUS
Publication of US20110129612A1 publication Critical patent/US20110129612A1/en
Abandoned legal-status Critical Current

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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 an escalator or a moving walk with a step band with steps, or respectively with a pallet band with pallets, for the transportation of persons and/or objects, and steps or respectively pallets that are provided with an antislip coating.
  • Transportation devices in the sense of the invention which may also be referred to as mobility devices, are escalators and moving walks with a plurality of tread units, escalator steps, or moving-walk pallets respectively, that are joined to form an endless transporter. Users of the transportation devices stand on tread surfaces of the tread units or of the steps, or walk on the moving-walk pallets or escalator steps, in the same direction as that in which the transportation devices travel or move.
  • steps or pallets are usually provided with ribs in the universally known manner. Despite these ribs, the steps or pallets are slippery. If the transportation device is in the open air, or in an area that is near to an outside door, the steps or pallets can become wet or dusty. In various cases, or in the fall, leaves or mud or airborne sand or soil or rubble or dust can find their way onto the transportation device. Especially in these situations, the steps or pallets prove particularly slippery and dangerous.
  • shoes with leather soles, or rubber boots are particularly slippery.
  • the invention sets out to provide a remedy.
  • the invention as it is characterized in Claim 1 solves the problem in that a special type of coating is selected which, relative to the previous methods, is significantly thinner. That is to say, the invention goes in a direction that should not really promise success, since the expert would be inclined to apply a thicker layer to increase the effectiveness and the ruggedness or durability.
  • a coating technique is used which ensures a very thin and highly adhesive join between the coating and the aluminum step, or the aluminum pallet or the metal pallet. Furthermore, coating materials were selected that make possible a particularly intimate and reliable coating of the metal parts as aluminum parts or steel parts or NIROSTA parts or copper parts or brass parts or magnesium parts.
  • FIG. 1 a side view of an escalator according to the invention
  • FIG. 2 a side view of a moving walk according to the invention
  • FIG. 3 a plan view of a pallet, or step, of a transportation device according to the invention
  • FIG. 4 an elevation of a pallet with antislip coating of a transportation device according to the invention
  • FIG. 5 a plan view of an end-part, or head, of a transportation device according to the invention.
  • FIG. 6 a side view onto the comb plate, and onto the floor covers, of a transportation device according to the invention.
  • FIG. 1 shows an escalator 1 that connects a first level E 1 with a second level E 2 .
  • the escalator 1 has a step band that consists of steps 4 .
  • this has a pallet band that consists of pallets 4 .
  • a handrail 3 is arranged on a balustrade 2 which at its lower end is held by a balustrade skirt.
  • FIG. 3 shows a diagrammatic representation of a pallet or step onto which between two and six strips of antislip coating 4 . 1 of carbide are applied or sprayed.
  • FIG. 4 shows a pallet 4 with an antislip coating 4 . 1 of a hard metal layer wherein carbide hard substances (tungsten carbide, chromium carbide, titanium carbide, nickel carbide, or silicon carbide) are embedded in a metallic matrix.
  • carbide hard substances tungsten carbide, chromium carbide, titanium carbide, nickel carbide, or silicon carbide
  • the carbide layer is applied to the step area of the moving walk pallet 4 over the entire length.
  • two carbide lengthwise strips are sprayed on.
  • FIG. 5 shows an end part E 1 , E 2 , or a head part, of a moving walk 1 or escalator 1 with antislip coating 4 . 1 which is applied to the pallets 4 or steps 4 .
  • an antislip coating 4 . 1 is present on the comb plates 7 , 8 , and on the floor covers 9 .
  • an antislip coating 4 . 1 is stripwise present on the combs. This embodiment allows the optimal protection against sliding away or slipping off.
  • the carbide layer is sprayed or squirted in two to six strips per floor cover 9 or comb plate 7 , 8 .
  • FIG. 6 shows the diagrammatic illustration of the comb plates 7 , 8 , and of the floor covers 9 with antislip coating 4 . 1 of carbide.
  • the hard metal coating 4 . 1 of carbide hard material surrounds the metal parts or aluminum parts and deposits itself in the metallic matrix that is present.
  • the surface of the components or metal parts is surrounded by the antislip coating 4 . 1 in fine-grained and weather resistant manner. This is applied stripwise by means of a high-speed flame-spraying process. By this means, an antislip surface forms that excellently prevents sliding or slipping.
  • a metallic powder material is accelerated and heated by means of a spraying process. Then, by means of a spray-gun, a jet of the heated and accelerated powder material is aimed at the surface that is to be coated. This takes place in such manner that on impact with the metal surface, or alloy surface, or aluminum surface that is to be coated, a homogeneous and fine-grained layer of a carbide hard material results, which is embedded in the metallic matrix.
  • the metallic powder material that is used is preferably a material that contains 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 flammable substance, preferably a flammable gas (propane or propylene), is used to heat and accelerate the powder material.
  • a flammable substance preferably a flammable gas (propane or propylene)
  • a liquid flammable substance e.g. kerosene
  • the substance to be sprayed is led in powder form coaxially through a nozzle, surrounded by the flame, and thereby uniformly pre-melted and led out of the spray-gun.
  • the powder material is sprayed with very high speed onto the metal workpiece or alloy workpiece or aluminum workpiece that is to be sprayed.
  • the heat to completely melt the powder material is generated by the reaction of oxygen and flammable substance (e.g. propane, propylene, natural gas, hydrogen, kerosene) in the combustion chamber.
  • oxygen and flammable substance e.g. propane, propylene, natural gas, hydrogen, kerosene
  • the temperatures that are attained in the flame reach up to approximately 3000-4000° C., so that the powder material can be sprayed.
  • the gas expands and accelerates the powder material up to a speed of 400-900 m/s.
  • the workpiece surface i.e.
  • the metal surface or the alloy surface or the aluminum steps or aluminum pallets 4 need not be previously sand-blasted or roughened since, on impact of the powder material on the workpiece, a type of welding, or adhesive binding and bonding, takes place between the powder material and the workpiece.
  • a type of welding, or adhesive binding and bonding takes place between the powder material and the workpiece.
  • high-speed flame-spraying through the high speed of the powder, a good adhesion of the metallic powder on the workpiece, and a low porosity, are attained.
  • a better material can be created or established that is perfectly suitable as antislip material.
  • the basic material (brass, copper, NIROSTA, steel, magnesium, aluminum) of the step 4 or pallet 4 is thereby enhanced and faultlessly perfected.
  • the layer thickness is preferably between 0.08 mm and 0.2 mm. The porosity of the layers approaches zero.
  • the layers that occur with the method according to the invention are denser, and adhere more firmly, than with other spraying methods such as commercial flame-spraying, arc spraying, or plasma spraying.
  • the method according to the invention is particularly suitable for hard metal layers wherein carbide hard substances (tungsten carbide, chromium carbide, titanium carbide, nickel carbide, or silicon carbide) are embedded in a metallic matrix.
  • carbide hard substances tungsten carbide, chromium carbide, titanium carbide, nickel carbide, or silicon carbide
  • Layers can be manufactured that are characterized by a high wear resistance and/or permanence and/or durability and/or resilience and/or constancy.
  • the emerging gas jet is used to pre-melt and melt the individual particles of the metallic powder material and accelerate them to a high speed that is four to five times greater than in conventional flame-spraying.
  • the high-speed flame-spraying process very effectively uses the high kinetic energy of the powder material and, to a limited extent, also thermal energy, to create dense, compact layers with low porosity and high adhesive strength and/or high adhesive pull strength.
  • Some of the layers that are thus produced have an adhesive pull strength of more than 83 Mpa (corresponding to approximately 83 N/mm2) and an exceptionally fine-grained surface.
  • the process uses, as said, a mixture of oxygen and a flammable substance, which is fed either as a mixture of oxygen and a flammable substance, or as a liquid flammable substance.
  • a mixture of oxygen and a flammable substance which is fed either as a mixture of oxygen and a flammable substance, or as a liquid flammable substance.
  • the gas-operated systems use propylene, propane, oxygen, or natural gas; in the liquid flammable substance systems, kerosene is used.
  • the respective flammable substance is carefully mixed with oxygen, and emerges through a nozzle, where it is ignited.
  • nitrogen as carrier gas the powder material is led in powder form coaxially through this nozzle, surrounded by the flame, and thereby uniformly pre-melted.
  • the powder particles are accelerated and, with very high kinetic energy but moderate temperature, are shot or sprayed or squirted onto the workpiece surface. On impact, the powder particles are greatly flattened and surround the base body.
  • these layers have a forecastable chemical composition and are virtually homogeneous. Furthermore, the layers have a fine-grained structure.
  • Coatings of this type survive even harsh operating conditions and all-weather operation. Particularly the abrasion or wear is clearly less than with conventional antislip coatings.
  • the antislip coating according to the invention thus offers not only an outstanding protection of the steps 4 or pallets 4 , but also a coating that even after relatively long use hardly diminishes in its antislip effect, or not at all.
  • the thickness of the carbide layer remains constant for at least 5 to 10 years, and there are absolutely no signs of wear or weathering or tendency to corrode.
  • the new coating enables the standards EN 115: Safety Rules for the Construction and Installation of Escalators and Passenger Conveyors, and AN American National Standard ASME A17.1-2004: Safety Code for Elevators and Escalators, to be fulfilled. Further investigations show that DIN 51130 is also fulfilled with the highest coefficient of friction R13.
  • the antislip coating additionally lengthens in outstanding manner the lifetime of the coated components.
  • the antislip coating has a very fine-grained surface, a uniform composition, and a low porosity, and counts as completely processed. That is to say, it requires no further processing steps and no further surface treatment.
  • the carbide layers are characterized by a high hardness of almost 1400 NV (Vickers hardness).
  • FIG. 3 Particularly preferred is an embodiment of the invention that is represented in FIG. 3 .
  • a number of strips 4 . 1 (preferably between two and six strips per pallet or step) are applied with strip widths from 20 mm to 75 mm. Through this measure, the quantity of powder material that is used is reduced. The antislip effect is nonetheless adequate, since the strips 4 . 1 offer adequate adhesion.
  • the theoretical angle of slope on the pallet 4 , or on the step 4 , or on the floor cover 9 , without slipping can be very significantly increased relative to known solutions. Consequently, the theoretical angle of slope on the pallet 4 , or on the step 4 , can be increased from 11 degrees to well over 40 degrees of slope, since the carbide layer excellently prevents sliding or slipping. Furthermore, in the case of wetness and/or soiling (dust, mud, airborne sand, soil, rubble, leaves), sliding or slipping can be optimally avoided and/or prevented by the carbide layer.
  • the invention can be equally applied to escalators and moving walks.

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  • 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)
US12/674,706 2007-08-24 2008-08-14 Moving walkways or escalators having anti-slip coating and method for applying an anti-slip coating Abandoned US20110129612A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07114989.2 2007-08-24
EP07114989 2007-08-24
PCT/EP2008/060700 WO2009027241A1 (de) 2007-08-24 2008-08-14 Fahrsteige bzw. fahrtreppen mit antirutschbeschichtung sowie verfahren zum aufbringen einer antirutschbeschichtung

Publications (1)

Publication Number Publication Date
US20110129612A1 true US20110129612A1 (en) 2011-06-02

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ID=39048996

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US12/674,706 Abandoned US20110129612A1 (en) 2007-08-24 2008-08-14 Moving walkways or escalators having anti-slip coating and method for applying an anti-slip coating

Country Status (7)

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

Cited By (1)

* 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (10)

* 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
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
US5194338A (en) * 1988-03-04 1993-03-16 Ethyl Corporation Preceramic composition containing silicon based powder
US5268045A (en) * 1992-05-29 1993-12-07 John F. Wolpert Method for providing metallurgically bonded thermally sprayed coatings
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
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
US20070036626A1 (en) * 2004-04-22 2007-02-15 Kone Corporation Pallet arrangement for a people mover

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (10)

* 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
US20070036626A1 (en) * 2004-04-22 2007-02-15 Kone Corporation Pallet arrangement for a people mover

Cited By (1)

* 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

Also Published As

Publication number Publication date
BRPI0815902A2 (pt) 2015-02-24
BRPI0815902B1 (pt) 2020-11-10
CN101784471B (zh) 2013-07-03
EP2190773A1 (de) 2010-06-02
CN101784471A (zh) 2010-07-21
PL2190773T3 (pl) 2014-05-30
EP2190773B1 (de) 2013-12-25
ES2454246T3 (es) 2014-04-10
WO2009027241A1 (de) 2009-03-05

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AS Assignment

Owner name: INVENTIO AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HEUBERGER, MARCUS;BRUDERER, DANIEL;REEL/FRAME:023974/0956

Effective date: 20100204

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION