DE10259149B4 - Device for monitoring component breaks in the area of an escalator or moving walkway - Google Patents

Abstract

Facility for monitoring of breaks from on combs of escalators or moving walkways arranged teeth (5), wherein in the area the teeth one conductive foil (6) forms a first electrode and in the area the comb plate another conductive foil (7) another electrode training, and monitoring takes place according to the capacitor principle.

Description

The The invention relates to a device for monitoring fractures of on combs arranged by escalators or moving walkways teeth.

The DE-Gbm 299 07 184 relates to an escalator or a moving walk each with a comb plate at the entry and exit, the comb plate comb segments has, their teeth with grooves in the step or the palette comb. Point the comb segments on the teeth a lead up across the width of the comb segments extends and that by a tooth fracture is interrupted. By this state of the art can already be effective the breaking of a single tooth are detected so that after completed Tooth breakage in any case, a shutdown of the escalator or the moving walk brought becomes. After that must immediately manual, namely by repair of the affected Segmentes, be intervened before the escalator or the moving walk can be put back into operation. The plant is thus subject a relatively long unusability.

By DE-A 100 37 172 discloses a comb plate for a passenger conveyor become. The same includes a base plate and one side of it attached, a plurality of substantially parallel to each other arranged teeth, in use at a passenger conveyor in grooves, which in the Treadmill are provided, intervene, the comb plate a in use exposed top and a concealed in use Underside has. Kammplattenseitig is an electric tooth breakage monitoring device provided, which is designed so that they adjacent to each other at break of two arranged teeth generates a warning signal. This document shows a device to monitor of breaks on teeth the comb plate of escalators with at the bottom of the comb plate provided conductor tracks. The tracks run along the Length of Teeth from Tooth base until just before the front end. The tracks are made from a relatively little inherently stable material, so that at one Fracture of one of the teeth the conductor is interrupted. For example, thin metal wires or Metal foils, for example, evaporated on a substrate could be or also conductive plastic materials as material for the conductor tracks imaginable. The support film may be, for example, a PCB film act, which has a one-sided adhesive coating. The foil can thus simultaneously as a carrier adhesive and insulator for serve the tracks. Also can individual components of the evaluation circuit in the manner of SMD components attached to the foil and connected to the track.

In of US-B1 6,241,070 a safety device for passenger conveyors is described. In the area of a teeth including comb plate elements are provided by means of which a lifting of teeth or tooth segments can be detected. This in particular with regard to on entering dirt, stones or the like, which ultimately when exceeded a predetermined tolerance for switching off the passenger conveyor leads. These Document is about a rotatably mounted comb plate, the held in its functional position by means of a locking rod is and which then can cause a shutdown of the system when objects under the comb plate are pulled. Trapped objects can be the comb plate move upwards. A convenient way to detect the upward force obtained by placing a pressure transducer on the lock rod the comb plate incorporated, the pressure transducer because of on the comb plate acting, upwards Force with a locking bar locking bar and therefore the Locking rod interacts as a result of the retracted incident, why the pressure transducer sends a signal to shut down the system generated.

A more, own or additional Method for monitoring the events in the space below the rotatably mounted comb plate exists according to this Document therein, which caused there by retracted material change the electrical capacity to detect.

To Safety standards are a single tooth breakage though unpleasant, but it tolerable due to the small tooth spacing is the lack of a single tooth also from a safety point of view to accept, so that a Shutdown of the system does not seem necessary here. It becomes problematic only if several teeth are damaged, in which case under circumstances, especially in the absence of adjacent teeth, larger distances are formed, which then constitute a source of danger.

aim The subject of the invention is the known device for monitoring of tooth fractures develop further to the effect that while also the damage a single tooth can be determined, but is tolerable and a Shutdown of the escalator or moving walkway not necessarily already brought about by this situation must become.

This object is achieved by a device for monitoring fractures of tough on combs of escalators or moving walkways arranged NEN, wherein in the teeth, a conductive foil forms a first electrode and in the region of the comb plate, a further conductive foil forms another electrode, and the monitoring takes place according to the capacitor principle.

advantageous Further developments of the device according to the invention can be found in the dependent claims.

With The subject invention is in development of the prior art ensured that at Breakage of a single tooth does not necessarily mean a shutdown of the escalator or of the moving walkway must become. This takes effect only if, for example, two adjacent Teeth broken or damaged are. A shutdown, however, can also be useful if a single tooth is bent upwards.

With In any case, the subject matter of the invention can be canceled, bent away of teeth at the step entrance (comb) of an escalator or a moving walkway while the operation are detected, reducing the risk of entrapment for users is reduced.

On the comb segment as well as the teeth can electrodes forming conductive films, for example, isolated, are glued. The same can be provided with electrical leads, which in turn with a Evaluation unit are connected.

Of the Subject of the invention is based on an embodiment in the drawing and is described as follows. Show it:

1 Basic structure of the monitoring device according to the invention.

The single figure shows a comb segment 1 in the bottom view 4 , In the field of teeth 5 is a first as needed formed as a printed circuit electrode 6 adhesively bonded in the form of a conductive foil. In the area of the comb segment 1 There is a second as needed formed as a printed circuit electrode 7 in the form of a conductive foil, which is also glued here isolated.

Via electrical lines 8th that with the electrodes 6 . 7 are connected, a downstream, not shown evaluation in partial elimination of the first electrode 6 make a local assignment as to which tooth 5 aborted or bent.

Claims (4)

Device for monitoring fractures of teeth arranged on combs of escalators or moving walkways ( 5 ), wherein in the area of the teeth a conductive foil ( 6 ) forms a first electrode and in the region of the comb plate another conductive foil ( 7 ) forms another electrode, and monitoring takes place according to the capacitor principle. Device according to claim 1, characterized in that at least one of the conductive foils ( 6 . 7 ) opposite the teeth ( 5 ) or glued isolated against the comb plate. Device according to one of claims 1 to 2, characterized in that the conductive films ( 6 . 7 ) with electrical lines ( 8th ) are provided, which are in operative connection with an evaluation. Device according to claim 3, characterized in that the lines ( 8th ) in the form of printed circuits.