Safety apparatus of passenger conveying equipment

Abstract

A safety device for a passenger conveying facility has a tread that is formed in a ring shape and is cyclically driven, and an entrance / exit floor provided on an end portion of a ring of the ring tread and having a plurality of comb-shaped teeth thereon. An acceleration sensor unit is provided on a doorway floor or on a doorway floor support beam for supporting the doorway floor. Based on the acceleration signal detected by the acceleration sensor unit, the control device determines abnormality of the passenger conveying facility. If it is judged to be abnormal, the passenger conveyor is stopped or operated at a low speed.

Description

technical field [0001] The present invention relates to passenger conveying equipment, and in particular to safety devices therefor. Background technique [0002] An example of a conventional safety device for a passenger conveyor is disclosed in JP-A-5-155576. In this gazette, when a foreign matter clogs the entrance / exit floor portion of a passenger conveying facility, an abnormal situation due to the foreign matter clogging is avoided. Specifically, an impact sensor is provided on the comb-like portion formed at the front end of the entrance floor, and if a foreign object is clogged and a collision occurs, the impact sensor can detect the impact and report an abnormality. [0003] Another example of the safety device of the conventional passenger conveyance facility is described in Unexamined-Japanese-Patent No. 7-101663. In this gazette, a noise meter is installed near the entrance floor. And, the cycle of the sound obtained from the noise meter is the same cycle as t...

AI Technical Summary

Problems solved by technology

However, there is a risk that if the comb teeth are damaged due to collision with a foreign object, the collision sensor will also be damaged

In this case, the collision sensor has to be exchanged together with the exchange of the comb teeth of the passenger conveyor, resulting in an increase in cost

Moreover, the comb-like teeth arranged on the floor of the entrance and exit are generally provided in a plurality along the width direction of the floor of the entrance and exit, which also becomes a cause of increased cost.

On the other hand, in the safety device described in the above-mentioned Japanese Unexamined Patent Publication No. 7-101663, since it only relies on the noise meter to measure the abnormal presence or absence of noise, it is difficult to detect obstruction when a foreign object is blocked on the entrance / exit floor. The case of circular drives for passenger conveyors

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