JP2009062127A - Emergency elevator control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent fire-fighting activity from being impeded by an abnormal operation monitoring device, which is provided for ensuring the safety of elevator users. <P>SOLUTION: When a primary fire-fighting operation switch 6 is switched on, an elevator operation control means 9 carries out primary fire-fighting operation control. An abnormal operation monitoring function invalidating means 14 cancels an operation stop command (but does not cancel an operation stop command from an open door starting preventing means 13) even if a door safety circuit short-circuit detecting means 12 outputs the operation stop command during primary fire-fighting operation. When a secondary fire-fighting operation switch 7 is switched on, the elevator operation control means 9 carries out secondary fire-fighting operation control. The abnormal operation monitoring function invalidating means 14 cancels an operation stop command even if one of the door safety circuit short-circuit detecting means 12 and the open door starting preventing means 13 outputs the operation stop command. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an emergency elevator control system including an abnormal operation monitoring device that operates based on a monitoring control program independent of an operation control program.

  An emergency elevator is an elevator that is obliged to be installed in a building that exceeds 31m in height based on Article 34 of the Building Standards Act. Although this emergency elevator can be used as a normal elevator during normal times, it is used for fire fighting and rescue activities in the event of a fire, so it is installed based on specifications different from those of normal elevators.

For example, in order to be able to carry the necessary fire extinguishing equipment and fire fighters, the car has a minimum size and capacity, and the emergency elevator is called back to the evacuation floor (usually the first floor). The installation of a “call-back button” for this purpose is prescribed. In addition, a fire-fighting operation switch that can be operated with a dedicated key is installed in the car. When this fire-fighting operation switch is switched from “OFF” to “ON”, the car can be used regardless of whether there is a landing call on another floor. An operation control program is created so that the vehicle can be moved directly to the target floor (primary firefighting operation) or the car can be lifted and lowered with the door open (secondary firefighting operation) (Patent Document 1). reference).
Japanese Patent Laid-Open No. 7-247076

  By the way, recently, in order to ensure the safety of the elevator user regardless of whether it is a normal elevator or an emergency elevator, an abnormal operation monitoring device that functions based on a monitoring control program independent of the operation control program is provided. Is being considered. This abnormal operation monitoring device is preset with the abnormal operation of the elevator to be monitored, and outputs an operation stop command to the elevator operation control circuit when the occurrence of the abnormal operation of the elevator is detected. The elevator is forcibly stopped regardless of the state.

  As such an abnormal operation monitoring device, for example, a door safety circuit short circuit detection that outputs an operation stop command when it is detected that a door switch of any one of a car door and a landing door on all floors is short-circuited There is a device.

  As another abnormal operation monitoring device, for example, there is a gate opening prevention device that outputs an operation stop command when a car is about to travel with the car door open. This gate opening prevention device is one of the protection devices for preventing the door from opening.

  However, if an abnormal operation monitoring device such as that described above functions based on a monitoring control program that is independent of the operation control program in an emergency situation where a fire is occurring, the car on which the firefighter rides stops between the floors. However, there is a risk that the fire fighting activity of the firefighter will be hindered.

  For example, the door switch short-circuit state detected by the door safety circuit short-circuit detection device is mainly caused by welding of switch contacts or pinching of foreign matters due to mischief. However, even if such a door switch short-circuit occurs, it does not hinder the traveling of the car itself, so even if the door safety circuit short-circuit detection device detects an abnormality, the fire fighting operation should not be stopped. .

  In addition, the secondary firefighting operation is extremely urgent, and it is premised on permitting travel even if the car on which the firefighter was originally placed was in the open state. Even if the departure prevention device detects the open state of the car door, its operation should not be stopped.

  The present invention has been made in view of the above circumstances, and provides an emergency elevator control system capable of preventing fire fighting activities from being hindered by an abnormal operation monitoring device for ensuring the safety of elevator users. The purpose is that.

  As a means for solving the above-mentioned problems, the present invention includes a primary fire fighting operation switch and a secondary fire fighting operation switch arranged in the operation panel of the car, and the primary fire fighting operation switch or the secondary fire fighting operation switch. Based on the operation signal, an elevator operation control means for performing primary firefighting operation control or secondary firefighting operation control, and a monitoring control program for a predetermined elevator abnormal operation are set in advance independently of the operation control program. An abnormal operation monitoring means for outputting an operation stop command to the elevator operation control means based on the monitoring control program when occurrence of an abnormal operation of the elevator is detected; and from the primary fire fighting operation switch or the secondary fire fighting operation switch. Abnormal operation monitoring that disables the operation stop command output by the abnormal operation monitoring means when an operation signal is input Characterized by comprising the capability disabling means.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent that a fire fighting activity is inhibited by the abnormal operation | movement monitoring apparatus for ensuring the safety of an elevator user.

  FIG. 1 is a configuration diagram of an emergency elevator control system according to an embodiment of the present invention. In this figure, one end side of a main rope 2 is attached to an upper portion of a car 1 that is disposed so as to be movable up and down in the hoistway. An intermediate portion of the main rope 2 is wound around a hoisting machine 3, and the other end side is attached to a counterweight 4.

  An operation panel 5 is installed in the passenger car 1, and a primary fire fighting operation switch 6 and a secondary fire fighting operation switch 7 are provided inside the operation panel 5. The operation panel 5 is provided with a door that can be opened only with a dedicated key so that a general elevator user cannot operate these fire-fighting operation switches.

  An operation signal from the primary fire fighting operation switch 6 or the secondary fire fighting operation switch 7 is output to the elevator operation control means 9 in the emergency elevator control device 8. The elevator operation control means 9 performs primary fire fighting operation or secondary fire fighting operation based on operation signals from these fire fighting operation switches, and drives and controls the hoisting machine 3.

  A safety device 10 is provided in parallel with the emergency elevator control device 8. The safety device 10 includes an abnormal operation monitoring unit 11 including a door safety circuit short circuit detection unit 12 and an opening gate prevention unit 13 and an abnormal operation monitoring function invalidating unit 14.

  The door safety circuit short circuit detection means 12 stops the operation of the elevator operation control means 9 when it detects that any one of the car doors of the car 1 and the landing doors of all floors is short-circuited. The command is output based on a monitoring control program independent of the operation control program. The short circuit of the door switch in this case is, for example, when the voltage level of the door safety circuit configured by serial connection of the door switches is in spite of the state in which the elevator operation control means 9 is outputting the door opening command. It can be detected by detecting that the door is closed.

  The gate opening prevention means 13 outputs an operation stop command to the elevator operation control means 9 based on a monitoring control program independent of the operation control program when the car 1 tries to run with the car door open. It has become. In this case, when the car 1 tries to run with the car door open, the car 1 starts running even though the voltage level of the door safety circuit is not at the door closed state. It can be detected by detecting what has been done.

  The abnormal operation monitoring function invalidating means 14 can input an operation signal from the primary fire fighting operation switch 6 and the secondary fire fighting operation switch 7, and when an operation signal is inputted, according to the type of the signal. Thus, the operation stop command output from the door safety circuit short-circuit detection means 12 and the opening gate prevention means 13 is invalidated, that is, canceled.

  That is, the abnormal operation monitoring function invalidating means 14 is a door safety circuit short-circuit detecting means when no operation signal is input from either the primary fire fighting operation switch 6 or the secondary fire fighting operation switch 7 (in normal operation). 12. The operation stop command from any of the gate opening prevention means 13 is not canceled, but is passed as it is and is output to the elevator operation control means 9. Therefore, the functions of the door safety circuit short-circuit detection means 12 and the opening gate prevention means 13 work effectively to ensure the safety of the elevator user.

  On the other hand, when the abnormal operation monitoring function invalidating means 14 inputs an operation signal from the primary fire fighting operation switch 6 (in the case of the primary fire fighting operation), only the operation stop command from the door safety circuit short circuit detecting means 12 is canceled. The operation stop command from the gate opening prevention means 13 is passed as it is and is output to the elevator operation control means 9. This is because even if the door safety circuit short-circuit detection means 12 detects a short-circuit of the door switch, the car 1 should be able to run, so the primary fire-fighting operation should be continued. Since the driving mode is not as urgent as driving, the firefighters in the hall or in the car 1 should make the operation stop command from the gate opening prevention means 13 effective without cancellation. This is because it is preferable for safety of elevator users.

  When the abnormal operation monitoring function invalidating means 14 inputs an operation signal from the secondary fire fighting operation switch 7 (in the case of the secondary fire fighting operation), any of the door safety circuit short circuit detecting means 12 and the gate opening prevention means 13 is selected. This also cancels the operation stop command from. This is because the original purpose of the emergency elevator is impaired if the secondary fire-fighting operation with a very high degree of urgency is interrupted by the operation stop command and the fire-fighting activities are hindered.

  Next, the operation of FIG. 1 will be described with reference to the flowchart of FIG. When the elevator operation control means 9 is performing normal operation control, the abnormal operation monitoring function invalidating means 14 validates both the door safety circuit short circuit detection function and the gate opening prevention function (step 1). If neither the primary fire fighting operation switch 6 nor the secondary fire fighting operation switch 7 is operated and remains “OFF” (when the determination results in steps 2 and 3 are both “NO”), the normal Operation control is continued and both functions are maintained effectively.

  However, if a fire breaks out during the normal operation control as described above, the firefighter who arrived by the fire report presses the “call-back button” installed at the landing on the evacuation floor and pushes the car 1 Call back and get into this car 1. Then, the firefighter unlocks the door of the locked operation panel 5 with a dedicated key and opens it, for example, switches the primary fire fighting operation switch 6 to “ON” (“YES” in Step 2). As a result, the operation signal of the primary fire fighting operation switch 6 is output to the elevator operation control means 9 and the abnormal operation monitoring function invalidating means 14.

  When the operation signal from the primary fire fighting operation switch 6 is input, the abnormal operation monitoring function invalidating means 14 invalidates the door safety circuit short-circuit detection function and validates the gate opening prevention function, and the elevator operation control means. 9 executes the primary fire fighting operation control by the operation of the firefighter's car call button (step 4).

  That is, if there is a car call or a hall call that has been registered so far, the elevator operation control means 9 cancels all these calls and then responds only to the firefighter's car call and goes straight to the destination floor. . Further, the abnormal operation monitoring function invalidating means 14 cancels the operation stop command if the door safety circuit short circuit detecting means 12 outputs the operation stop command, while the gate opening prevention means 13 operates. When a stop command is output, the operation stop command is output to the elevator operation control means 9 without being canceled. Therefore, although the elevator operation control means 9 cannot drive the car 1 with the door open, even if a short circuit of the door switch is detected, the elevator operation control means 9 can directly go to the destination floor without any problem.

  Such primary firefighting operation control is continued unless the firefighter switches the primary firefighting operation switch 6 from “ON” to “OFF” (“NO” in Step 5). The operation is terminated when the primary fire fighting operation switch 6 is switched from “ON” to “OFF” (“YES” in Step 5). After this, the maintenance worker of the elevator maintenance company checks whether there is any damage to the elevator equipment due to the fire (step 6) and restores to normal operation control.

  In addition, when the firefighter switches the secondary firefighting operation switch 7 to “ON” (“YES” in step 3), the operation signal of the secondary firefighting operation switch 7 is ineffective in the elevator operation control means 9 and the abnormal operation monitoring function. Is output to the converting means 14.

  By the input of the operation signal from the secondary fire fighting operation switch 7, the abnormal operation monitoring function invalidating means 14 invalidates both the door safety circuit short circuit detection function and the gate opening prevention function, and the elevator operation control means 9 Secondary fire-fighting operation control is executed by the operation of a firefighter's car call button (step 7).

  That is, if there is a car call or a hall call that has been registered so far, the elevator operation control means 9 cancels all these calls and then responds only to the firefighter's car call and goes straight to the destination floor. . Moreover, even if either the door safety circuit short circuit detection means 12 or the gate opening prevention means 13 outputs an operation stop command, the abnormal operation monitoring function invalidation means 14 cancels these operation stop commands.

  Therefore, the elevator operation control means 9 can be directed to the destination floor as it is even if a short circuit of the door switch is detected or the car 1 remains open. Operation control can be executed without any problem.

  Such secondary firefighting operation control is continued unless the firefighter switches the secondary firefighting operation switch 7 from “ON” to “OFF” (“NO” in Step 8). The operation ends when the secondary fire fighting operation switch 7 is switched from “ON” to “OFF” (“YES” in Step 8). After this, the maintenance worker of the elevator maintenance company checks whether there is any damage to the elevator equipment due to the fire (step 6) and restores to normal operation control.

  As described above, according to the configuration of the present embodiment, when the elevator operates abnormally during normal operation, the operation of the elevator can be immediately stopped by the function of the abnormal operation monitoring means, while fire fighting operation is performed. It is possible to prevent the fire fighting activity from being hindered by the function of the abnormal operation monitoring means.

  In the present embodiment, the case where the abnormal operation monitoring unit 11 includes the door safety circuit short-circuit detection unit 12 and the gate opening prevention unit 13 has been described, but of course, other units may be included. For example, the abnormal operation monitoring unit 11 may include a seismic control operation control unit. In this case, even if an earthquake occurs during the fire fighting operation, the abnormal operation monitoring function invalidating means 14 cancels the operation stop command output by the earthquake control operation control means, so that the fire fighting activity is still hindered. Can be prevented.

The block diagram of the emergency elevator control system which concerns on embodiment of this invention. The flowchart for demonstrating the operation | movement of FIG.

Explanation of symbols

1: Car 2: Main rope 3: Hoisting machine 4: Counterweight 5: Control panel 6: Primary fire-fighting operation switch 7: Secondary fire-fighting operation switch 8: Emergency elevator control device 9: Elevator operation control means 10: Safety device 11: Abnormal operation monitoring means 12: Door safety circuit short circuit detecting means 13: Opening prevention means 14: Abnormal operation monitoring function invalidating means

Claims (3)

A primary fire-fighting operation switch and a secondary fire-fighting operation switch arranged in the operation panel of the car,
Elevator operation control means for performing primary fire fighting operation control or secondary fire fighting operation control based on an operation signal from the primary fire fighting operation switch or the secondary fire fighting operation switch;
A monitoring control program for a predetermined abnormal operation of the elevator is set in advance independently of the operation control program, and when the occurrence of the abnormal operation of the elevator is detected, the operation of the elevator operation control means is performed based on the monitoring control program. Abnormal operation monitoring means for outputting a stop command;
An abnormal operation monitoring function disabling unit that disables the operation stop command output by the abnormal operation monitoring unit when an operation signal is input from the primary firefighting operation switch or the secondary firefighting operation switch;
An emergency elevator control system comprising: The abnormal operation monitoring means is a door safety circuit short-circuit detection means that outputs the operation stop command when it is detected that any one of the door switches of the car door and the landing doors of all floors is short-circuited, and Including gate opening prevention means for outputting the operation stop command when the car is about to travel in a car door open state,
The emergency elevator control system according to claim 1. When the operation signal from the primary fire fighting operation switch is input, the abnormal operation monitoring function invalidating means invalidates only the operation stop command output from the door safety circuit short circuit detecting means, When the operation signal from the fire fighting operation switch is input, the operation stop command output by either the door safety circuit short circuit detection means or the gate opening prevention means is invalidated.
The emergency elevator control system according to claim 2.

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