JPH0680777U - Passenger conveyor safety equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a passenger conveyor safety device that can reduce accidents during operation of the safety device. [Structure] 1, 2 and 3 which are caused by artificial factors, and 4 which are caused by machine abnormality.
It is equipped with a broadcasting device 14 that is classified into 5 and 6 and that includes a voice synthesizer and a speaker 13, and stops the immediate operation when the artificial abnormality detection switch operates, and announces that it stops when the mechanical abnormality detection switch operates. A safety device for a passenger conveyor, characterized in that the operation is stopped after broadcasting from the broadcasting device 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a passenger conveyor safety device.

[0002]

[Prior art]

 The safety switch for abnormality detection installed in the conventionally known passenger conveyor, such as an escalator, is a legal safety switch for cutting the drive chain or step chain, and an emergency stop switch and handrail entrance / exit installed in the entry / exit area. It is equipped with a safety switch, a skirt guard switch, and a shutter limit switch that stops the escalator in conjunction with the building shutter. In addition, there are some safety switches that the manufacturer has independently.

As an example of a passenger conveyor provided with such a safety device, there is JP-A-53-116660.

[0004]

[Problems to be solved by the device]

 In this way, when the safety switch provided on the conventionally known passenger conveyor operates, the operation of the passenger conveyor is stopped immediately, so that the damage to passengers is minimized. However, if the escalator that carries the passenger to the upper floor or the lower floor of the passenger conveyor is suddenly stopped, the passenger does not grasp the handrail, collapses the balance, and then collapses, and then the user shogi It can cause injuries and is a problem.

An object of the present invention is to provide a safety device for a passenger conveyor that can solve such a problem and reduce accidents during operation of the safety device.

[0006]

[Means for Solving the Problems]

 The above object of the present invention is to provide a passenger conveyor safety device including at least one abnormality detection switch and a control circuit for stopping the operation when the switch operates. , It is achieved by changing the stopping method at the time of operation of the abnormality detection switch according to this classification.

[0007]

[Action]

 According to the above invention, since the abnormality detection switches are classified into a plurality of types, it is possible to change the response at the time of abnormality detection for each classification. For example, by classifying the above-mentioned abnormality detection switch into a switch for detecting a mechanical abnormality and a switch for detecting an artificial abnormality, when a mechanical abnormality is detected, a broadcast provided on the passenger conveyor main body or in the surrounding area. The passenger conveyor is stopped after the device notifies that the passenger conveyor will be stopped, and when an artificial abnormality is detected, the passenger conveyor is immediately stopped to prevent the injury of passengers due to the sudden stop of the passenger conveyor. be able to.

[0008]

【Example】

 Hereinafter, a case where one embodiment of the present invention is applied to an escalator will be described.

FIG. 1 is a starter circuit diagram of the escalator, FIG. 2 is a safety circuit diagram of the escalator, and FIG. 3 is a broadcast circuit diagram.

In the figure, 1 is a normally closed contact whose contact opens when a skirt guard switch (not shown) is operated, 2 is a normally closed contact whose contact is opened when a handrail entrance / exit safety detection switch (not shown) is operated, and 3 is a disconnection detection switch for a step chain (not shown) Normally closed contact that opens the contact during operation, 4 is a normally closed contact that opens when the roller separation detection switch (not shown) is operating, 5 is a normally closed contact that opens when the roller lift detection switch (not shown) is operating, and 6 is a shutter limit (not shown) It is a normally closed contact that opens when the switch operates. 7 is a rising operation start switch, 8 is a descending operation start switch, 9 is an ascending operation relay, 9a ₁ , 9a ₂ and 9a ₃ are normally open contacts, 9b ₁ is a normally closed contact, 10 is a descending contact the 10a _1, 10a _2, 10a ₃ in operation relay in its normally open contact, 10b ₁ is its normally closed contact. Reference numeral 11 is a broadcast relay, 11b ₁ and 11b ₂ are normally-closed contacts, and 12 is a stop timer. The time limit for counting can be changed, and the time limit is determined by the specifications of each escalator. In this embodiment, the time until the guide broadcasting is finished is set as the time limit of the timer. The normally closed contact that opens when the timer 12 finishes counting is 12b ₁ . Reference numeral 13 is a speaker provided in or around at least one escalator main body, and 14 is a broadcasting device equipped with a voice synthesizer. Reference numeral 15 is a three-phase induction motor that moves the steps of the escalator, U, V, and W are three-phase AC power supplies, and P and N are DC power supplies.

Next, the operation will be described. Now, when the ascending operation starting switch 7 is turned on, the ascending operation relay 9 is excited, the normally open contacts 9a ₁ , 9a ₂ and 9a ₃ are closed, and current is supplied to the three-phase induction motor 15 so that the escalator starts ascending operation. Start. If the customer's shoes are caught between the steps and the skirt guard, the skirt guard switch detects this abnormality, the normally closed contact 1 opens, and the ascending operation relay is demagnetized. 9a ₁ , 9a ₂ and 9a ₃ are opened, current is not supplied to the three-phase induction motor 15, and the escalator is immediately stopped so that the damage to users is minimized. Similarly, when the roller peeling detection switch operates during the ascending operation, the normally closed contact 4 opens and the broadcast relay 11 is demagnetized. Along with this, the normally closed contacts 11b ₁ and 11b ₂ are closed and the broadcasting device 14 operates, and at the same time, the stop timer 12 starts counting. From the speaker 13, the voice synthesis device provided in the broadcasting device 14 broadcasts a guide to the effect that it will stop suddenly, for example, "Stop suddenly. Hold your handrail firmly." After that, the counting of the stop timer 12 which is set to the end time of the broadcast is finished, and the normally closed contact 12b ₁ is opened. As a result, the ascending operation relay 9 is demagnetized, the normally-open contacts 9a ₁ , 9a ₂ , 9a ₃ are opened, the three-phase induction motor 15 is stopped, and the escalator is stopped. At this time, since the escalator user hears the guidance broadcast from the speaker 13 in advance, it is not surprising that the escalator suddenly stops, and the user can firmly grasp the handrail before the sudden stop. , I will not lose balance and fall.

As described above, in this embodiment, the case where the escalator needs to be stopped immediately is taken into consideration when the skirt guard switch operation, the step chain disconnection detection switch, and the handrail entrance / exit safety detection switch are operated. Cases where it is not necessary to do this include the roller peeling detection switch operation, roller lifting detection switch operation, and shutter limit switch operation.Prevention of damage from immediate stoppage, prevention of user's shogi accident due to stoppage after information broadcast. It is possible to prevent. The classification of the switches and the processing after the operation of the safety switches for each classification are determined depending on the performance of the escalator, the type of the building equipped, and the like. As an example, distinguish between a safety switch that operates due to a customer-caused abnormality and a safety switch that operates due to a mechanical abnormality, and immediately stop when an artificial abnormality occurs, when the mechanical abnormality occurs, the above-mentioned guidance broadcast or buzzer. Similar safety can be secured by stopping after the warning sound such as.

[0013]

[Effect of device]

 According to the present invention, the safety switch is divided into a plurality of categories, and the corresponding operation can be changed according to each category, so that the safety of passengers can be secured at all times and the passenger conveyor can be used during an emergency stop. This has the effect of ensuring the safety of customers.

[Brief description of drawings]

FIG. 1 is a starting circuit diagram of an escalator according to an embodiment of the present invention.

FIG. 2 is a safety circuit diagram of an escalator.

FIG. 3 is a broadcast circuit diagram.

[Explanation of symbols]

 7 Switch for ascending operation start 8 Switch for descending operation start 9 Relay for ascending operation 10 Relay for descending operation 11 Broadcast relay 12 Stop timer

Claims (1)

[Scope of utility model registration request] 1. A passenger conveyor safety device comprising at least one abnormality detection switch, and a control circuit for stopping the operation when the switch operates, wherein the abnormality detection switch is classified into a plurality of types, and according to the classification. Safety device for passenger conveyors characterized by changing the stopping method when the abnormality detection switch operates.