EP0932576A1 - Dispositif de declenchement destine a un paillasson a contact d'un escalier mecanique - Google Patents

Dispositif de declenchement destine a un paillasson a contact d'un escalier mecanique

Info

Publication number
EP0932576A1
EP0932576A1 EP98946332A EP98946332A EP0932576A1 EP 0932576 A1 EP0932576 A1 EP 0932576A1 EP 98946332 A EP98946332 A EP 98946332A EP 98946332 A EP98946332 A EP 98946332A EP 0932576 A1 EP0932576 A1 EP 0932576A1
Authority
EP
European Patent Office
Prior art keywords
tripping device
tread plate
plate
base frame
contact mat
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Withdrawn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
EP98946332A
Other languages
German (de)
English (en)
Inventor
Rolf Kistner
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.)
Kistner Rolf
Original Assignee
Kistner Rolf
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 Kistner Rolf filed Critical Kistner Rolf
Publication of EP0932576A1 publication Critical patent/EP0932576A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B25/00—Control of escalators or moving walkways

Definitions

  • the invention relates to a triggering device for an escalator contact mat according to the preamble of claim 1.
  • Such contact mats are used in practice to only operate escalators when there is actually a requirement.
  • the contact mat is movably supported relative to a base frame.
  • One or more mechanical triggering devices interact with the contact mat in such a way that when the contact mat is stepped on, the resulting movement of the contact mat downwards triggers a switching process which puts the escalator into operation.
  • the mechanical triggering devices have a plate which is in contact with the contact mat and which is spring-mounted and which interacts with a mechanical switch.
  • a triggering device is known from German patent specification 727 487, in which the triggering takes place by a change in capacitance in a high-frequency resonant circuit.
  • the use of light barriers to trigger the operation of an escalator is also known in practice.
  • such light barriers are particularly susceptible to vandalism. In addition, they are relatively expensive.
  • a reliable, environmentally insensitive solution is presented in which movement of the contact mat is largely avoided and mechanical switching parts are completely dispensed with, so that there is little susceptibility to faults.
  • the trigger load can be easily adjusted by adjusting the evaluation and switching device accordingly.
  • only a small number of very simple components are used for the triggering device, so that the costs of the triggering device according to the invention are low compared to the known triggering device.
  • the proposed solution no longer allows the user to identify the process by which the escalator is actually put into operation. Since movement of the contact mat is virtually non-existent or not noticeable to the user and a noise is eliminated during the switching process due to the lack of mechanical components, the user cannot readily recognize that the contact mat is actually the trigger for the operation of the Escalator is.
  • the bending element which can be formed by a bending beam, can be clamped on the tread plate of a contact mat and the actuating element, which can be formed by an actuating bolt, can be arranged on the base frame in a supportable manner.
  • This solution is particularly advantageous for a new escalator. It can in particular be provided, as will be explained below, that the bending beam is arranged in the interior of the tread plate.
  • a triggering device is provided.
  • a particularly reliable contact mat is achieved in that four triggering devices are provided, the triggering devices being arranged in the region of the four corners of the preferably rectangular tread plate.
  • the evaluation and switching device can evaluate the signals transmitted by the strain gauges of the individual triggering devices in such a way that it triggers a switching process only when a threshold value is exceeded by one of the signals, or in such a way that it adds the respective signals of the triggering devices and triggers the switching process when the added signal is exceeded.
  • the adjustment i.e. the non-switching state of the contact mat, in contrast to the use of mechanical triggering devices, is very simple, since only an adjustment has to be carried out within the switching and evaluation device.
  • the bending beam can be arranged in different ways. On the one hand, there is the possibility that the bending beam is firmly clamped on one side. Likewise, it can also be firmly clamped on both sides.
  • the bending beam can be made from different materials. In terms of weight reduction, it is particularly advantageous if the bending beam is made of aluminum or an alloy thereof. With regard to the aspect of "service life and costs", the bending beam can also be made from spring steel.
  • the cross section of the bending beam can also be chosen arbitrarily.
  • the attachment of the strain gauge it has proven to be advantageous if the bending beam has a cuboid cross section.
  • the strain gauge when attached to the bending beam, it should preferably be arranged outside the neutral fiber of the bending beam.
  • the bending beam can also be formed by a particularly frustoconical plate spring, which is held immovably in the direction of its plate surface and on whose truncated cone the actuating bolt acts.
  • the bolt on his free end has a gradation, which is guided in the hole of the plate spring.
  • the triggering device In order to shield the triggering device particularly reliably against environmental influences, it has proven to be advantageous if it is used in a step plate with an upper and a lower plate which are kept spaced apart from one another by a spacing frame, so that the triggering device can be arranged in the interior of the spacing frame is, wherein the actuating bolt, which is supported on the base frame, dips into the interior of the spacer frame via an opening in the spacer frame and possibly in the lower plate and is in contact with the bending beam. The opening can be sealed.
  • the above-mentioned object can also be achieved in that the triggering device is a moving coil which is connected to the evaluation and switching device, and that an actuating bolt is provided which plunges into the moving coil when the contact mat is subjected to a predetermined load .
  • the triggering device is a plate capacitor which is connected to the evaluation and switching device, and that an actuating pin is provided which moves in between the plates of the plate capacitor when the contact mat is subjected to a predetermined load.
  • a light barrier is arranged on the base frame, which detects a deflection of the contact mat from a rest position in such a way that the light barrier is interrupted at such a deflection and thus the operation of the escalator is started. If there is sufficient space, a device for translating the minimal movement of the contact mat into a larger movement path can be provided so that the light barrier reliably detects the deflection of the contact mat.
  • the triggering device according to the invention can be used in particular with a contact mat to trigger the operation of an escalator.
  • the triggering device according to the invention can also be used for automatically opening doors or for any other function to be triggered by entering a certain area. The latter would also be conceivable, for example, in the context of an alarm and monitoring device. The triggering process, which is not perceptible to the person concerned, is particularly important.
  • Figure 1 is a plan view of a contact mat in which the invention
  • Triggering device is used
  • FIG. 2 shows a cross section through the contact mat shown in FIG. 1 with a first embodiment of a triggering device
  • FIG. 3 shows a cross section through the contact mat shown in Figure 1 with a second embodiment of a triggering device
  • FIG. 4 shows a cross section through the contact mat shown in FIG. 1 with a third embodiment of a triggering device
  • FIG 5 shows a cross section through the contact mat shown in Figure 1 with a fourth embodiment of a triggering device.
  • an escalator contact mat 10 is shown in plan view.
  • the contact mat 10 comprises a tread plate 1 2, a total of four triggering devices 20 according to the invention and a switching and evaluation device S.
  • the tread plate 1 has an upper rectangular plate 1 2a and a lower rectangular plate 1 2b. Both plates 1 2a, 1 2b can be made of aluminum sheet, the upper plate 1 2a may also have a corrugation or the like on the outside to increase the slip resistance, which is shown in FIGS. 1 to 5 on the upper side of the upper step plate 1 2a is shown schematically.
  • the two plates 1 2a, 1 2b are made of square hollow profiles, preferably of a spacer frame 1 6 Aluminum or an alloy thereof, spaced apart.
  • the square hollow profiles of the spacer frame 1 6 run along the marginal edges of the upper and lower plates 1 2a, 1 2b. As can be seen in particular from FIGS.
  • the square hollow profiles 16 can also protrude laterally beyond the upper and lower plates 12a, 12b and can be encompassed by a C-shaped end profile 18.
  • the contact mat 10 is mounted on a base frame G shown only schematically in FIGS. 2 to 5 in the manner set out below.
  • a trigger device 20 according to the invention is arranged at each of the four corners of the spacer frame 16.
  • FIGS. 2 to 4 show three different embodiments of the trigger device 20 according to a first principle.
  • the triggering device 20 shown in FIG. 2 comprises a bending beam 22 which is provided in the interior of the spacer frame 16 and is clamped on one side and on which an actuating bolt 24 acts.
  • the bending beam 22 can be held in the spacer frame 16 by a screw connection.
  • the actuating bolt 24 is fixedly attached to the base frame G, or at least is supported on it, and passes through the end profile 18 and the spacer frame 1 6 through an opening D and projects into the interior of the square hollow profile of the spacer frame 1 6.
  • the actuating bolt 24 is in contact with the bending beam 22.
  • the actuating bolt 24 can also be screwed to the bending beam 22, as is shown schematically in FIG. 2.
  • a strain gauge DMS is arranged, based on FIG. 2.
  • This strain gauge DMS is connected via a cable K to the evaluation and control device S located approximately in the middle of the contact mat 10 (cf. FIG. 1).
  • the contact mat 10 experiences a corresponding load.
  • This load leads to the contact mat 10 moving slightly downwards.
  • the bending beam 22 is firmly clamped on one side and connected to the contact mat 10 via the spacer frame 16, its left side (based on FIG. 2) also moves downward.
  • the right-hand side of the bending beam 22 (based on FIG. 2), on the other hand, is stationary since it is held by the actuating bolt 24 which is supported on the base frame G.
  • this strain gauge DMS is shown schematically by a black line. As can further be seen from FIG. 2, the strain gauge DMS is located outside the neutral bending phase of the bending beam 22.
  • the embodiment of the triggering device 20 shown in FIG. 3 differs from that shown in FIG. 2 in that the bending beam 22 is clamped on both sides.
  • the actuating pin 24 is arranged approximately in the middle of the bending beam 22. If the contact mat 10 moves downward when someone enters it, the two clamped ends of the bending beam 22 are also moved downward.
  • the stationary bending beam 24 leads to a bending of the bending beam 22 in the middle, which in turn is detected by the strain gauge DMS.
  • FIG. 4 A further embodiment is shown in FIG. 4, the bending beam here being formed by a plate spring 26 held in the direction transverse to its spring deflection.
  • the actuating bolt 24 ' has an extension 24a' at its free end, which has a smaller diameter than the actuating bolt 24 'itself. This extension 24a 'dips into the hole 26a of the plate spring 26.
  • a strain gauge is in turn attached to the outside of the plate spring 26.
  • FIG. 5 shows a further embodiment of the trigger device 20 according to the invention, which has a second structure which differs from the principle of the embodiments according to FIGS. 2 to 4.
  • This embodiment differs from the preceding release devices 20 shown in FIGS. 2 to 4 in that the bending beam 1 22 is not clamped on one side on the contact mat 10 but on the base frame G.
  • the actuating bolt 1 24 is held on the contact mat 10 and is in contact with the bending beam 22. This can be done, as is explicitly shown in FIG. 5, that the actuating bolt 124 is held inside the spacer frame 1 6. But it would also be conceivable that the actuating pin 124 is only held on the outside of the lower tread plate 12b.
  • the actuating bolt 1 24, which is firmly connected to the contact mat 10 is moved downward, as a result of which the free end of the bending beam 122 is also bent downward.
  • This downward bend is detected by the strain gauge DMS attached there.
  • the path of movement of the contact mat 10 down here is very small (less than 1 mm).
  • the contact mat 10 or the tread plate 1 2 sits on the base frame G after a very short movement path, so that the forces from the tread plate 12 are guided directly into the base frame G and not from the bending beam when the tread plate 12 is loaded further 122 must be included.
  • the path covered by the contact mat 10 in the exemplary embodiments of the triggering device 20 according to the invention shown in FIGS. 2 to 5 can be a maximum of 1 mm.
  • the known mechanical release devices require distances of up to 10 mm. It is thereby immediately apparent that the triggering of the operation of the escalator can no longer be recognized by the normal user due to the triggering device according to the invention. If, in particular, the release path of the contact mat is kept well below 1 mm, this effect is intensified.
  • a lifting opening 12aa can be provided on the upper plate 1 2a. Furthermore, an opening (not shown further) can be provided on the lower plate 1 2b, which opens up access to the evaluation and switching device S.

Landscapes

  • Escalators And Moving Walkways (AREA)

Abstract

L'invention concerne un dispositif de déclenchement destiné à un paillasson à contact d'un escalier mécanique. Ce dispositif comprend une plaque marche-pied (12) qui coopère avec le dispositif de déclenchement (20) et est montée sur un cadre de base (G). Le dispositif de déclenchement (20) possède un dispositif d'évaluation et de commutation (S) qui commande le fonctionnement de l'escalier mécanique. Une poutre de pliage (22, 26, 122) porte au moins une jauge extensométrique (DMS) qui est reliée au dispositif d'évaluation et de commutation (S) et qui peut être montée sur la plaque marche-pied (12) ou le cadre de base (G). Un boulon d'actionnement (24, 24', 124), en contact avec la poutre de pliage (22, 26, 122), s'appuie contre le cadre de base (G) ou la plaque marche-pied (12) et engendre une charge de pliage sur la poutre de pliage (22, 26, 122) lorsque la plaque marche-pied (12) est soumise à une charge prédéterminée. Cette charge de pliage peut être détectée par la jauge extensométrique (DMS).
EP98946332A 1997-08-14 1998-08-13 Dispositif de declenchement destine a un paillasson a contact d'un escalier mecanique Withdrawn EP0932576A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1997135360 DE19735360C1 (de) 1997-08-14 1997-08-14 Auslösevorrichtung für eine Fahrtreppen-Kontaktmatte
DE19735360 1997-08-14
PCT/EP1998/005154 WO1999008953A1 (fr) 1997-08-14 1998-08-13 Dispositif de declenchement destine a un paillasson a contact d'un escalier mecanique

Publications (1)

Publication Number Publication Date
EP0932576A1 true EP0932576A1 (fr) 1999-08-04

Family

ID=7839037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946332A Withdrawn EP0932576A1 (fr) 1997-08-14 1998-08-13 Dispositif de declenchement destine a un paillasson a contact d'un escalier mecanique

Country Status (3)

Country Link
EP (1) EP0932576A1 (fr)
DE (1) DE19735360C1 (fr)
WO (1) WO1999008953A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19829325C1 (de) * 1998-07-01 2000-01-05 O & K Rolltreppen Gmbh Betätigungseinrichtung für Antriebselemente einer Personenförderanlage
US6520310B1 (en) 2001-12-27 2003-02-18 Inventio Ag Combplate load and obstruction sensor apparatus
DE102005055684A1 (de) * 2005-11-17 2007-05-31 Werner Kircher Zustiegs- und/oder Zufahrtshilfe mit einer beweglichen Trittplatte und mindestens einem Sensor zur Erfassung von vertikalen und/oder horizontalen, auf die Trittplatte einwirkenden Störkräften
DE102007038346A1 (de) 2007-08-14 2009-02-26 Rolf Kistner Abdeckmatte für eine Fahrtreppe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4973949A (en) * 1989-10-10 1990-11-27 Robert Brocia Dual wheatstone bridge strain gage marine intrusion sensor
FR2672681B1 (fr) * 1991-02-13 1995-02-03 Mongliols Jean Claude Detecteur de pression a fibre optique.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9908953A1 *

Also Published As

Publication number Publication date
DE19735360C1 (de) 1999-03-11
WO1999008953A1 (fr) 1999-02-25

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