JP2006199470A - Elevator control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator control device capable of stopping an elevator depending on the operational position of a maintenance staff in a car or on the car when the maintenance staff operates a safety device for maintenance or the like during the maintenance operation. <P>SOLUTION: The elevator control device capable of traveling a car 5 to a nearest floor and stopping it when a safety device of an elevator is operated during the maintenance operation comprises a car position recorder 11 to record the position from which a maintenance staff can get on/get off a landing floor 6 on the car as the value for each floor, and a determination means 12 which determines a plate where the maintenance staff performs the maintenance operation, and stops the car when the place is matched with the recorded value of the car position recorder if the maintenance staff performs the maintenance operation on the car. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to an elevator control device that stops an elevator according to whether a maintenance worker operates in a car or on a car when an elevator safety device is activated during maintenance operation by a maintenance worker. It is.

  In the conventional elevator control system, when the elevator safety device is activated during maintenance operation by maintenance personnel, the car floor position and the landing floor position are almost the same regardless of the position where the maintenance personnel operate. That is, it stops at a position normally called a door zone. However, when maintenance personnel are performing maintenance operations on the car, depending on the floor height, this stop position is not necessarily the position where the passenger can get off to the landing floor, so in some cases, maintenance personnel are trapped on the car. It will end up.

  Further, as a conventional technique, there has been proposed an elevator maintenance safety device that can set a predetermined operation mode and prohibit normal operation when a maintenance person gets on the car (see, for example, Patent Document 1).

JP 2004-224541 A

In the conventional elevator control device, there are an elevator operation after the safety device is activated, an emergency stop depending on the importance, and an elevator operation that stops to the nearest floor. And if a safety device that operates and stops at the nearest floor during maintenance operation is activated, it will stop when entering the door zone (the range where the car floor position matches the landing floor position), and then Cannot start. Therefore, if maintenance personnel are performing maintenance operations in the car, they can get off to the landing, but if they are performing maintenance operation on the car, they may get off to the landing depending on the positional relationship to the landing floor. There is a problem that can not be.
Moreover, in the thing of patent document 1, when a maintenance worker gets on a cage | basket | car, normal operation is only prohibited, Therefore When carrying out the maintenance operation | work on a cage | basket | car, depending on the positional relationship to a landing floor, The problem of being unable to get off to the landing was not solved.

  The present invention has been made to solve the above-described problems. When a safety device is activated during maintenance operation by a maintenance staff, the maintenance staff operates in the car or on the car. Thus, an elevator control device capable of stopping the elevator is provided.

  In the elevator control device according to the present invention, when the elevator safety device is activated during the maintenance operation, the position where the maintenance staff can get on and off the landing floor from the top of the car when traveling to the nearest floor is stopped. The car position recording device that records the value for each floor and the location where maintenance personnel are performing maintenance operations, and when maintenance personnel are performing maintenance operations on the cage, the car position recording device records Judgment means for stopping the car when it matches the value is provided.

  When the maintenance operation button provided in the car is operated, it is determined that the maintenance operation is performed in the car. When the maintenance operation button provided on the car is operated, maintenance is performed on the car. It is determined that you are driving.

  Further, when the maintenance operation button provided in the car is operated, it is determined that the maintenance operation is performed in the car, and the position detection guide plate of the hoistway obtained from the position detection device installed in the car is determined. When the car is stopped to the nearest floor depending on the presence or absence and the maintenance operation button provided on the car is operated, it is determined that the car is performing the maintenance operation and is obtained from the position detection device. The priority is given to stopping the car when it matches the value recorded by the car position recording device, rather than the presence or absence of the position detection guide plate.

  According to the present invention, a car position recording device that records a position at which a maintenance worker can get on and off the landing floor from the top of the car as a value for each floor, and a location where the maintenance person is performing maintenance operation are determined. When maintenance operation is performed, a judgment means is provided to stop the car when it matches the value recorded by the car position recording device. It can be controlled according to the position, and maintenance personnel who are performing maintenance operations on the car can safely get off the landing floor.

Embodiment 1 FIG.
1 is a system configuration diagram showing the overall configuration of an elevator control apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a case where a safety device is activated during maintenance operation of the elevator control apparatus according to Embodiment 1 of the present invention. It is a flowchart for demonstrating operation | movement of.

In FIG. 1, a pulse generator 2 is attached on the axis of the hoisting motor 1, and the pulse generator 2 is a device that generates a pulse by the rotation of the hoisting motor 1. A sheave or suspension wheel 3 is coupled to the shaft of the hoisting motor 1 directly or via a gear. A main rope 4 is wound around the sheave or suspension wheel 3, and an elevator car 5 and a counterweight (not shown) are attached to both ends of the main rope 4. And the cage | basket | car 5 raises / lowers the inside of a hoistway by rotation of a sheave or the suspension wheel 3. FIG. In order to detect whether the floor surface of the car 5 and the position of the landing floor 6 coincide with each other, a position detection guide plate 7 is installed in the hoistway or the like, and a position detection device 8 is installed in the car 5. Has been. When the position detection device 8 is within the range of the position detection guide plate 7, it is determined that the position of the floor surface of the car 5 and the position of the landing floor 6 are the same. This range is usually referred to as a door zone, and is a range in which a car door can be opened and closed and a user can get on and off.
The elevator control panel 9 is a panel in which components for controlling the elevator are housed, and is installed in a machine room or the like. When a maintenance operation button (not shown) provided in the car 5 is operated or when a maintenance operation button (not shown) provided on the car 5 is operated, the signal is sent to the control panel 9. The maintenance operation is performed after being transmitted. The conversion circuit 10 is a means for converting the pulse from the pulse generator 2 due to the raising and lowering of the car 5, that is, the rotation of the hoisting motor 1, into the speed and the position in the hoistway of the car 5. The car position recording device 11 is a means for recording positions at which maintenance personnel can get on and off the upper part of the car 5 (on the car) and the landing floor 6 as values for all floors. This position is recorded in advance based on the position in the hoistway from the conversion circuit 10. The determination circuit 12 is a means for comparing and determining the value of the position in the hoistway from the conversion circuit 10 and the value recorded in the car position recording device 11, and stops the car 5 when it matches the recorded car position value. Let The position detection device 8 installed in the car 5 inputs the presence / absence of the position detection guide plate 7 installed in the hoistway to the determination circuit 12 via the input circuit 13. The control circuit 14 is means for controlling the hoisting motor 1 based on the determination result of the determination circuit 12.

Next, the operation of the current elevator control device will be described.
Elevator safety devices have two types of post-operation movement depending on their importance. That is, an emergency stop after the operation and a stop after traveling to the nearest floor. When the safety device is operated to stop and travel to the nearest floor while the elevator is traveling normally or by maintenance personnel, the elevator is stopped when the position of the car 5 enters the door zone, and the activation is prevented thereafter. At this time, when the maintenance person is performing maintenance operation with the maintenance operation button provided in the car 5, the user can get off from the car 5 to the landing floor 6. However, when the maintenance person is performing maintenance operation with the maintenance operation button provided on the car 5, the maintenance person is on the car 5, so depending on the positional relationship with the landing floor 6, the landing floor may be changed from the top of the car 5. There are cases where it is not possible to get off at 6 and the car 5 is locked up.

An operation flow for solving the above problem will be described with reference to FIG.
When the elevator safety device operates (step S1), the stop condition of the car is determined based on the location where the maintenance staff is operating (step S2). That is, if the maintenance position of the maintenance worker is performing maintenance operation with the maintenance operation button in the car 5 in step S2, the process proceeds to step S3, and the presence or absence of the position detection guide plate 7 obtained from the position detection device 8 as usual. Judge with. If the position detection guide plate 7 is present, the process proceeds to step S4, a stop command is output to the control circuit 14, and the car 5 is stopped in the door zone.
On the other hand, if the operation position of the maintenance worker is performing maintenance operation with the maintenance operation button on the car 5 in step S2, the process proceeds to step S5, and the position in the hoistway from the conversion circuit 10 and the car position recording device 11 record it. The values are compared, and when the values match, the process proceeds to step S4 to output a stop command to the control circuit 14 and stop the car 5. In this case, the positional relationship between the car 5 and the landing floor 6 is such that the maintenance staff can easily get off from the car to the landing floor.
In addition, when the operation position of the maintenance staff is performing the maintenance operation with the maintenance operation button on the car 5, the method of judging based on the presence or absence of the position detection guide plate 7 obtained from the normal position detection device 8 is invalidated, Alternatively, it can be easily realized by giving priority to comparing the position in the hoistway from the conversion circuit 10 and the value recorded by the car position recording device 11.

  As described above, according to the first embodiment, when the safety device is activated, the maintenance staff who performs maintenance operation on the car is controlled by controlling the stop position of the car according to the maintenance operation position of the maintenance staff. You can safely get off to the landing floor.

1 is a system configuration diagram illustrating an overall configuration of an elevator control device according to Embodiment 1 of the present invention. It is a flowchart for demonstrating operation | movement when a safety device act | operates during the maintenance driving | operation of the control apparatus of the elevator in Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoisting motor 2 Pulse generator 3 Sheave or suspension wheel 4 Main rope 5 Elevator car 6 Landing floor 7 Position detection guide plate 8 Position detection device 9 Elevator control panel 10 Conversion circuit 11 Car position recording device 12 Judgment circuit 13 Input circuit 14 Control circuit

Claims (3)

When the elevator safety device is activated during maintenance operation, the elevator control device stops the car by traveling to the nearest floor.
A car position recording device that records the position where maintenance personnel can get on and off the landing floor from the top of the car as a value for each floor;
A determination unit for determining a place where maintenance personnel are performing maintenance operation, and when the maintenance personnel are performing maintenance operation on the car, a stopping unit which stops the car when the value matches the value recorded by the car position recording device;
An elevator control device comprising:   When the maintenance operation button provided in the car is operated, it is determined that the maintenance operation is performed in the car, and when the maintenance operation button provided on the car is operated, the maintenance operation is performed on the car. The elevator control device according to claim 1, wherein the control device determines that the vehicle is in a controlled state. When the maintenance operation button provided in the car is operated, it is determined that the car is in maintenance operation, and the presence or absence of a position detection guide plate for the hoistway obtained from the position detection device installed in the car is determined. When the car is run to the nearest floor and stopped, and the maintenance operation button provided on the car is operated, it is determined that the car is performing the maintenance operation, and the position detection device obtains the 2. The elevator control device according to claim 1, wherein priority is given to stopping the car when it matches the value recorded by the car position recording device, rather than the presence or absence of a position detection guide plate.

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