EP1739048A1 - Poulie d'entraînement pour main-courante flexible - Google Patents

Poulie d'entraînement pour main-courante flexible Download PDF

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Publication number
EP1739048A1
EP1739048A1 EP06114910A EP06114910A EP1739048A1 EP 1739048 A1 EP1739048 A1 EP 1739048A1 EP 06114910 A EP06114910 A EP 06114910A EP 06114910 A EP06114910 A EP 06114910A EP 1739048 A1 EP1739048 A1 EP 1739048A1
Authority
EP
European Patent Office
Prior art keywords
layer
wheel
handrail
outer layer
elastically
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.)
Granted
Application number
EP06114910A
Other languages
German (de)
English (en)
Other versions
EP1739048B1 (fr
Inventor
Thomas Novacek
Thomas Illedits
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
Priority to EP20060114910 priority Critical patent/EP1739048B1/fr
Publication of EP1739048A1 publication Critical patent/EP1739048A1/fr
Application granted granted Critical
Publication of EP1739048B1 publication Critical patent/EP1739048B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66B23/02—Driving gear
    • B66B23/04—Driving gear for handrails

Definitions

  • the invention relates to a wheel for driving a flexible handrail of an escalator or a moving walkway according to claim 1.
  • Escalators and moving walkways generally have laterally fixed balustrades.
  • band-shaped handrails are mounted, which move relative to the balustrades as synchronously as possible with the tread elements of escalators or moving walks.
  • the handrails consist essentially of a flexible band and can be driven by a wheel, which in turn is directly or indirectly driven by a motor. This wheel can simultaneously act as a diverter to divert the handrail where a change in direction of the handrail is required.
  • Handrails should be driven as continuously as possible, ie without jerking, and as quietly as possible, and the wheel and the handrail itself should be designed so that noises and signs of wear are minimized.
  • slip-stick effects are instability effects associated with parameters that affect the sliding friction and static friction between the handrail and the contact surface of the handrail-driving wheel.
  • a sliding of the handrail relative to the wheel should be avoided, which means that the static friction does not fall below a certain level should. In practice, however, it often happens that for a short time sliding friction occurs, which can be compared with an Aqua-Planning and results in the mentioned slip-stick effect.
  • a known wheel for driving a handrail has been formed so that it is substantially formed by an elastically well deformable layer in the form of a driving wheel tire.
  • This tire is filled with a filler such as compressed air or a noble gas.
  • Themaschineradsammlung acts as a power transmission element by its outer peripheral surface under pressure against the inner surface of the handrail, so that upon rotation of themaschineraditess the handrail is driven by acting between the power transmission element and the handrail stiction.
  • the object of the invention is therefore to propose a wheel for driving a flexible handrail of an escalator or a moving walkway, with which the disadvantages of the prior art are avoided.
  • the main advantages of the new wheel are the prevention of the slip-stick effect between the wheel and the handrail and the prevention of bead formation in the contact area between the wheel and the handrail.
  • the slip-stick effect is mainly determined by the ratio of static friction and sliding friction between the outer peripheral surface of the gas pressure-loaded tire casing the handrail.
  • the type of friction is essentially dependent firstly on the coefficient of adhesion or sliding friction between the materials of the tire casing and the handrail, which in turn are influenced by the surface structure or surface roughness; second, the pressure under which the tire casing rests against the handrail; and thirdly, the extent of the contact surface between the tire casing and the handrail.
  • the beading is essentially dependent on the respective material stiffness together with the material thickness, as depending on the contact area between the tire casing and handrail both in the direction of movement and transverse to form beads that have vibrations and thus noise and wear result.
  • the noise is reduced in the mass, as it depends on the energy that is released in the transition from static friction to sliding friction.
  • the noise is reduced in the mass, as it is caused by the aforementioned vibrations. At the same time reduce The wear of the affected components and the required drive power, while the ride comfort is increased.
  • the elastically well deformable layer is formed by a body of a solid material, in itself, ie without, for example Exposure to pressurized gas is dimensionally stable, and that is also elastically deformable.
  • Adjacent to an inner peripheral surface of this elastically easily deformable layer or middle layer is an inner layer which is stiffer than the elastically easily deformable layer.
  • the inner layer is generally directly adjacent to the middle layer and is non-rotatably connected to the middle layer.
  • an outer layer Adjacent to an outer peripheral surface of the elastically easily deformable layer or middle layer, an outer layer is arranged, which is intended to rest on the handrail to be driven under a sufficient pressure.
  • the outer layer is generally adjacent directly to the middle layer and is rotatably connected to the middle layer.
  • the middle layer biases the outer layer on the handrail, such that when the wheel is driven, a frictional engagement occurs between the outer layer and the surface of the handrail contacted by it, which results in the rotation of the wheel in the movement of the handrail is implemented.
  • the inner layer may be joined to a rim body of the wheel or form an integral part of such a rim body.
  • the solid body which forms the elastically easily deformable layer is preferably an at least approximately hollow cylinder-like body.
  • This body may have recesses to facilitate its elastic deformability.
  • the recesses may communicate with or be included in the exterior of the layer.
  • the tape is laid or arranged around the inner layer (e.g., a rim body) and then forms a hollow cylindrical body.
  • the outer layer which is elastically relatively flexible, preferably has a stiffener.
  • This stiffener may be integrated into the outer layer or form a sub-layer, which is arranged adjacent to the outer layer.
  • the stiffening effect can be produced with interlocking elements, for example elongate, rigid elements in wire or braid formation.
  • materials made of metal and / or natural fibers and / or plastics come into question.
  • the outer layer usually has a structure on its outer peripheral surface.
  • a structure with circumferentially extending grooves allows the outflow of water that can pass through the handrail in the contact area of handrail and outer layer.
  • Other structures can serve to improve the above-mentioned frictional connection.
  • the wheel is driven by a driving stick, which in EP1464609 was presented.
  • the lantern engages the step chain and turns the wheel, which either comes into contact with the handrail on the palm top or bottom, and moves the handrail.
  • the wheel may also be driven by a conventional handrail drive unit, eg, friction wheel.
  • Fig. 1 shows a wheel 10 according to the invention, which is rotatable about an axis of rotation A and a handrail 11 drives.
  • the handrail 11 is located at the upper edge of a balustrade 12, which is arranged laterally by tread elements, not shown, of the escalator and the moving walk.
  • the handrail 11 is in this case along almost 180 ° on the wheel 10 at.
  • the drive of the wheel 10 takes place, for example, by a motor 13 via an endless element 14 and a drive wheel 15.
  • a deflection wheel 16 is provided.
  • the wheel 10 is attached to a stationary support structure 17 in a conventional manner.
  • FIG. 2 shows a wheel according to the invention comprising an inner layer 20, a middle layer 30 and an outer layer 40.
  • the inner layer 20 forms a relatively stiff or rigid body, which is integrally formed with a rim body of the wheel 10, not shown, or which is attached to such a rim body.
  • the inner layer or body 20 may be made of, for example, PA-GF30, PP-GF30, PA-G, or other suitable material, e.g. Metals to be made with similar material properties.
  • the middle layer 30 radially adjoins the inner layer 20 and is rotatably connected in a suitable manner with the latter, such that a rotation of the rim body with the inner layer 20 results in a synchronous rotation of the middle layer 30 result.
  • the middle layer 30 is formed by a body of a solid material, which in itself, that is, when it is stress-free, not only volume-like like a tire cover of a pneumatic tire, but also dimensionally stable, and which is elastically sufficiently deformable.
  • the middle layer 30 is bounded in the axial direction by two radial boundary surfaces 31, 32, as indicated in Fig. 2. Furthermore, the middle layer 30 has a plurality of recesses 34 which extend between the radial boundary surfaces 31, 32. In the present embodiment according to FIG. 2, the recesses 34 are slot-shaped in a section perpendicular to the axis of rotation A. The recesses 34 communicate with the exterior of the middle layer 30, thus forming breakthroughs or at least eruptions and are therefore filled with ambient air. The purpose of the recesses is to increase the elastic deformability of the middle layer 30.
  • the recesses 34 may also have another shape, e.g. Diamonds or rectangles, and arrangement e.g. single or multiple, and enclosed in the middle layer 30, where they may be filled with air or a suitable gas. That is, the recesses 34 may contain a compressible, preferably fluid, material.
  • the solid material from which the body of the middle layer 30 is formed is elastically easily deformable.
  • materials should be understood whose elasticity modulus lies approximately in the range from 10 to 50 MPa. Suitable materials are for example PUR and elastomer, NBR, SBR and other materials with similar material properties. Particularly suitable are materials that allow to form a middle layer 30, which is elastically well deformable especially in the radial direction, but in tangential or circumferential correct but dimensionally stable and less elastic.
  • an outer layer 40 Adjacent to an outer peripheral surface 32 of the middle easily deformable layer 30, an outer layer 40 is provided.
  • the outer layer 40 is bonded to the middle layer 30 such that rotation of the middle layer 30 causes synchronous rotation of the outer layer 40.
  • the connection of the middle layer 30 with the outer layer 40 is such that the mentioned movement coupling comes about through a frictional connection or gluing or fusion.
  • the outer layer 40 is biased by the middle layer 30 to the outside (radially), so in the mounted state on the handrail 11 out.
  • the outer layer 40 is under pressure on the handrail 11. From this pressure, the size of the contact surface, in which the outer layer 40 and the handrail 11 touch and of the materials and structures of the outer layer 40 on the one hand and the handrail 11, the friction between the outer layer 40 and handrail 11 depends. This friction is so great that when the driven wheel 10 is permanently frictional engagement between the outer layer 40 and the handrail 11, so that the rotation of the wheel 10th permanently (ie without the occurrence of the slip-stick effect) is converted into the movement of the handrail 11.
  • the outer layer 40 is a coating, which on an outer surface, which is intended to rest on the handrail 11, preferably on a peripheral surface, ribs 42 has. These ribs extend in the embodiment shown in the circumferential direction and are therefore also referred to as longitudinal ribs.
  • the actual contact surface, with which the outer layer 40 rests against the handrail 11, is formed by the outer boundary surfaces of the ribs 42.
  • the outer layer 40 or the covering is elastically well deformable.
  • Suitable materials for making the outer layer include, for example, elastomers, NR, SBR, and HNBR, as well as other materials having similar material properties.
  • a wheel 10 is shown, which differs from the wheel 10 of Fig. 2 as follows:
  • the recesses 34 of the middle, elastically well deformable layer 30 are not slit-like in a section perpendicular to the axis of rotation A, but circular, i. it is cylindrical recesses and the axes of the cylindrical recesses are parallel to the axis of rotation of the wheel 10th
  • the wheel 10 shown in FIG. 4 differs from the wheel of FIG. 2 as follows:
  • the outer layer 40 has a stiffening 50.
  • This stiffening 50 is enclosed in a partial layer 41 of the outer layer 40 in the present exemplary embodiment.
  • the actual stiffener 50 serve wires, such as metal wires, or tissue, such as glass fiber or Kevlar, which extend in the circumferential direction.
  • the sub-layer 41 is connected to the outer layer 40 and, if necessary, to the middle layer 30 in such a way that it is rotationally coupled to each adjacent layer 40 and optionally also 30 with respect to rotation.
  • the stiffener 50 can also be arranged inside or on the outer layer 40 itself. The purpose of the stiffener 50 is that a perfect abutment of the outer layer 40 on the handrail 11 is achieved because the outer layer 40 is easily deformed and soft, but at the same time a bead formation and the associated disadvantages should be avoided.

Landscapes

  • Escalators And Moving Walkways (AREA)
EP20060114910 2005-06-07 2006-06-02 Poulie d'entraînement pour main-courante flexible Not-in-force EP1739048B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20060114910 EP1739048B1 (fr) 2005-06-07 2006-06-02 Poulie d'entraînement pour main-courante flexible

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05104965 2005-06-07
EP20060114910 EP1739048B1 (fr) 2005-06-07 2006-06-02 Poulie d'entraînement pour main-courante flexible

Publications (2)

Publication Number Publication Date
EP1739048A1 true EP1739048A1 (fr) 2007-01-03
EP1739048B1 EP1739048B1 (fr) 2010-03-03

Family

ID=37453272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060114910 Not-in-force EP1739048B1 (fr) 2005-06-07 2006-06-02 Poulie d'entraînement pour main-courante flexible

Country Status (1)

Country Link
EP (1) EP1739048B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06278981A (ja) * 1993-03-25 1994-10-04 Mitsubishi Denki Bill Techno Service Kk 手摺駆動ローラ
JPH10120350A (ja) * 1996-10-24 1998-05-12 Nippon Mektron Ltd 回転ローラ
JPH10167652A (ja) * 1996-12-13 1998-06-23 Mitsubishi Electric Corp 乗客コンベヤーの手摺駆動装置
US6119845A (en) * 1998-03-02 2000-09-19 Lg Industrial Systems Co., Ltd. Passenger conveyer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06278981A (ja) * 1993-03-25 1994-10-04 Mitsubishi Denki Bill Techno Service Kk 手摺駆動ローラ
JPH10120350A (ja) * 1996-10-24 1998-05-12 Nippon Mektron Ltd 回転ローラ
JPH10167652A (ja) * 1996-12-13 1998-06-23 Mitsubishi Electric Corp 乗客コンベヤーの手摺駆動装置
US6119845A (en) * 1998-03-02 2000-09-19 Lg Industrial Systems Co., Ltd. Passenger conveyer

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 01 28 February 1995 (1995-02-28) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 10 31 August 1998 (1998-08-31) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) *

Also Published As

Publication number Publication date
EP1739048B1 (fr) 2010-03-03

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