EP3782948A1 - Fahrtreppensystem - Google Patents

Fahrtreppensystem Download PDF

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Publication number
EP3782948A1
EP3782948A1 EP19192839.9A EP19192839A EP3782948A1 EP 3782948 A1 EP3782948 A1 EP 3782948A1 EP 19192839 A EP19192839 A EP 19192839A EP 3782948 A1 EP3782948 A1 EP 3782948A1
Authority
EP
European Patent Office
Prior art keywords
skirt
bracket
leaf spring
escalator system
bolt
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.)
Withdrawn
Application number
EP19192839.9A
Other languages
English (en)
French (fr)
Inventor
Matthias Osthoff
Rolf Carsten
Andreas Mnich
Norbert Balkenhol
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.)
Kone Corp
Original Assignee
Kone Corp
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 Kone Corp filed Critical Kone Corp
Priority to EP19192839.9A priority Critical patent/EP3782948A1/de
Publication of EP3782948A1 publication Critical patent/EP3782948A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B29/00—Safety devices of escalators or moving walkways
    • B66B29/02—Safety devices of escalators or moving walkways responsive to, or preventing, jamming by foreign objects

Definitions

  • This invention relates to an escalator system and more particularly to a solution improving the safety devices of the escalator system.
  • a challenge with an escalator system is to ensure that users of the escalator system (or objects) are not stuck between moving parts of the escalator system.
  • one potential location where such a risk exists is the gap between the skirt and the side of the step band.
  • the escalator system has skirts extending along the step band on opposite sides of the step band from the first end of the escalator system to the second end of the escalator system.
  • a force is generated by the stuck object which attempts to push the skirt sideways away from the step band.
  • an emergency stop should be triggered as soon as possible.
  • a challenge with an escalator system of this type is that the attachment brackets between the skirt and the truss of the escalator system attempt to prevent the previously mentioned force from moving the skirt sideways away from the step band when an object is stuck in the gap. Due to the fact that sufficient sideways movement is not achieved, there is a risk that the sensors are not able to reliably detect at all locations a situation where something is stuck in the gap, which prevents or at least delays an emergency stop of the escalator system.
  • An object of the present invention is to solve the above-mentioned drawback and by providing a novel escalator system. This object is achieved with the escalator system according to independent claim 1.
  • Figure 1 illustrates an escalator system 1, where by way of example a first end 2 of the escalator is located lover than a second end of the escalator 3. Consequently, in this illustrated example the escalator extends between different floors of a building, for instance.
  • the first end and the second end of the escalator may be both arranged on the same floor, in which case the escalator can be used for transporting persons from one location to another while remaining on one single floor (such as same vertical level). Therefore, in this application the term "escalator” includes also moving ramps and autowalks, in other words people conveyers arranged in one single floor only or to extend between different floors.
  • the escalator system 1 comprises a step band 4 extending between the first end 2 and a second end 3 of the escalator. During use, this step band is driven by an electric motor 5 under control of a control unit 6.
  • a skirt 7 extends along a side of the step band 4 with an outer surface 8 of the skirt 7 in close proximity to the side of the step band 4.
  • the escalator system is provided with a skirt 7 on both opposite sides of the step band 4 in close proximity to the sides of the step band in an attempt to keep the gaps between the skirts and step band sufficiently small to prevent that objects or persons using the escalator could be stuck in this gap.
  • the outer surface 8 of the skirt 7 is in this example planar, and the skirt 7 is attached to the truss 9 of the escalator system by brackets such that no direct contact exists between the truss and skirt, as illustrated by way of example in Figures 2 to 4 .
  • Figure 2 illustrates the inner surface of the skirt 7 (opposite to the outer surface 8 and turned away from the step band 4) with an attachment bracket 10
  • Figure 3 is a cross-section along line III - III of Figure 2
  • Figure 4 is a cross-section along line IV - IV of Figure 2 .
  • the bracket 10 has a first end 11 attached to the skirt 7 and a second end 12 attached to a truss 9 of the escalator system.
  • the truss 9 is a rigid frame part of the escalator system and provides a firm and non-movable attachment point for various parts of the escalator system, such as for the bracket 10.
  • the skirt 7 is attached by a plurality of such brackets to the truss 9 in such a way that no direct contact exists between the truss and skirt, due to which the skirt may move in a controlled way in relation to the truss, in case the attachment of the brackets make this possible.
  • the bracket 10 is L shaped, such that the first end 11 of the bracket 10 extends generally along the longitudinal direction 14 of the skirt 7, while the second end 12 of the bracket 10 extends substantially perpendicularly away from the skirt 7, for instance.
  • the second end 12 of the bracket 10 can be attached to the truss 9 by bolts (not illustrated), for instance.
  • bolts not illustrated
  • the attachment of the first end 11 of the bracket 10 to the skirt 7 is implemented by a spring, or alternatively, the attachment of the second end 12 of the bracket to the truss 9 is implemented via a spring.
  • the used spring facilitates that, when needed, a sufficient amount of movement of the skirt 7 is possible in relation to the truss 9, such that a sensor 13 monitoring the position of the skirt 7 can detect this movement, also at the location of the bracket 10, and provide the control unit 6 with control signals indicating the detected position of the skirt.
  • such movement of the skirt 7 is needed to occur when an object is stuck in the gap between the skirt 7 and the step band 4. Due to the control signals from the sensor 13, the control unit 6 can detect a change in the position of the skirt, and trigger an emergency stop for the electric motor 5 in order to stop the step band 4 from moving.
  • the type of the sensor 13 used may vary.
  • the sensor 13 is illustrated only schematically by way of example as a part attached to the truss 9.
  • an infrared or radar sensor may provide a signal indicating the distance between the sensor and the inner surface of the truss.
  • the spring is arranged specifically to attach the bracket 10 to the skirt 7 in a movable way, while the bracket 10 is attached to the truss 9 in a fixed, non-movable way.
  • the utilized spring is an elongated leaf spring 15. A first end 16 of the leaf spring 15 is attached to a first end 11 of the bracket 10, while a second end 17 of the leaf spring is attached to the skirt 7.
  • the skirt 7 comprises on the inner surface attachment points including generally C-shaped rails 18, washers 19 and nuts 20 for facilitating attachment of the skirt 7 to the leaf spring 15.
  • the leaf spring 15 is arranged in such a way that in a non-tensioned state the leaf spring 15 maintains a gap 21 between the first end 11 of the bracket 10 and the skirt 7, which allows the skirt to move a predetermined distance defined by the gap 21 towards the bracket 10 against the spring force of the leaf spring 15. Consequently, the skirt 7, while moving towards the bracket (and truss), moves away from the step band 4.
  • a suitable size for the gap is 1 mm, for instance. This movement is detected by the sensor 13 and control unit 6, such that an emergency stop can be triggered.
  • the attachment of the skirt 7 is implemented in a such a way, that the skirt 7 is under all conditions prevented from moving away from the bracket and truss 9, in other words towards the step band 4.
  • the second end 17 of the leaf spring 15 is provided with a bolt 26 and a nut 20 which together attach the second end 17 of the leaf spring 15 in a non-movable way to the skirt 7.
  • the bolt 25 and nut 20 attach the leaf spring 15 to the skirt 7 via the rail 18 of the skirt 7.
  • the first end 16 of the leaf spring 15 is provided with an outermost bolt 22 and with an intermediate bolt 23 such, that the intermediate bolt 23 is located between the outermost bolt 22 and the second end 17 of the leaf spring 15.
  • the intermediate bolt 23 attaches the first end 16 of the leaf spring 15 to the first end 11 of the bracket without attachment to the skirt 7. Consequently, the skirt 7 can move in relation to the combination of the leaf spring 15 and bracket 10 at the location of the intermediate bolt 23 against the spring force of the leaf spring when the leaf spring bends due to the force from the skirt 7.
  • the outermost bolt 22 has a first end 24 and a second end 25.
  • the first end 24 of the outermost bolt is attached to the skirt 7 (in the illustrated example to the rail 18 of the skirt) to prevent the first end 24 of the bolt from moving away from the skirt 7 towards the bracket 10.
  • the first end 24 is received in a nut 20, which is larger than the gap in the rail 18 of the skirt 7 such that the rail keeps the first end 24 non-movable against the rail 18 of the skirt 7.
  • the outermost bolt 22 extends from the first end 24 away from the skirt through a hole in the first end 11 of the bracket 10 and a hole in the first end 16 of the leaf spring 15 to the second end 25 of the outermost bolt 22.
  • the second end 25 of the outermost bolt 22 is attached to the leaf spring 15 to prevent the second end 25 of the bolt from moving through the hole in the leaf spring 15 towards the skirt 7.
  • the head of the outermost bolt 22 located in the second end 25 has a larger diameter than the hole in the leaf spring 15, which prevents the second end 25 from passing through the hole in the leaf spring towards the skirt 7.
  • the leaf spring 15 maintains in a non-tensioned state, as illustrated in Figures 2 to 4 , a gap 21 between the first end 11 of the bracket 10 and the skirt for allowing the skirt 7 to move a predetermined distance defined by the gap 21 towards the bracket 10 against a spring force of the leaf spring 15 when the leaf spring is bent due to the force from the skirt 7.
  • this gap is located between the washer 19 of the skirt 7 and the first end 11 of the bracket 10.
  • the size of the gap 21 varies depending on the implementation, one alternative is to utilize a gap which is about 1 mm wide. This facilitates that the skirt 7 may move 1 mm towards the bracket 10 (and truss), which is sufficient for a sensor 13 to detect a change in the position of the skirt.
  • a spacer element 27, as illustrated in Figure 3 extends along the outermost bolt 22 through the holes in the first end 11 of the bracket 10 and the first end 16 of the leaf spring 15 and maintains a predetermined distance between the second end 25 of the outermost bolt 22 and the skirt 7.
  • this space element 27 is provided in the form of a tube surrounding the bolt 22.
  • the illustrated example of the attachment between the skirt 7 and truss 9 has the advantage that the skirt 7 may move against the spring force of the leaf spring 15 away from the step band 4, however, movement of the skirt 7 in the opposite direction towards the step band is efficiently prevented. Additionally, the skirt is also prevented from moving upwards or downwards. These directions are illustrated by arrow 28 in Figure 2 .
  • An additional advantage with the illustrated solution is that the attachment of the skirt mainly corresponds to existing skirt attachments of existing escalator systems. Consequently, only minor modifications are needed, such as adding the leaf spring with the related attachment parts, in order to modify these existing escalator systems to have skirts that move as previously explained.

Landscapes

  • Escalators And Moving Walkways (AREA)
EP19192839.9A 2019-08-21 2019-08-21 Fahrtreppensystem Withdrawn EP3782948A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19192839.9A EP3782948A1 (de) 2019-08-21 2019-08-21 Fahrtreppensystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19192839.9A EP3782948A1 (de) 2019-08-21 2019-08-21 Fahrtreppensystem

Publications (1)

Publication Number Publication Date
EP3782948A1 true EP3782948A1 (de) 2021-02-24

Family

ID=67659688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19192839.9A Withdrawn EP3782948A1 (de) 2019-08-21 2019-08-21 Fahrtreppensystem

Country Status (1)

Country Link
EP (1) EP3782948A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181710A (en) * 1985-10-16 1987-04-29 Thyssen Man Aufzuege Side skirting for escalators or moving pavements
JPH04327491A (ja) * 1991-04-26 1992-11-17 Toshiba Corp マンコンベアの安全装置
JP2004307161A (ja) * 2003-04-08 2004-11-04 Mitsubishi Electric Building Techno Service Co Ltd エスカレータスカートガード挿入工具
CN103086250A (zh) * 2011-10-28 2013-05-08 康力电梯股份有限公司 一种围裙板防夹保护装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181710A (en) * 1985-10-16 1987-04-29 Thyssen Man Aufzuege Side skirting for escalators or moving pavements
JPH04327491A (ja) * 1991-04-26 1992-11-17 Toshiba Corp マンコンベアの安全装置
JP2004307161A (ja) * 2003-04-08 2004-11-04 Mitsubishi Electric Building Techno Service Co Ltd エスカレータスカートガード挿入工具
CN103086250A (zh) * 2011-10-28 2013-05-08 康力电梯股份有限公司 一种围裙板防夹保护装置

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