JPH10265144A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open and close a door even at a door opening and closing permitting position with no riding door by operation from the inside of a passenger cage at the time of maintenance inspection. SOLUTION: This elevator is constituted of a cage elevation button and a door opening and closing button provided in the inside of a passenger cage and an elevator control device 2 to control the passenger cage to a specified position in accordance with a command of the cage elevating button and to open, close and control a door in accordance with a command from the door opening and closing button. In this case, a change-over switch 71 of normal driving and maintenance driving and the elevator control device 2 elevate the passenger cage 3 in accordance with a command from a cage elevation button 72 at the time of maintenance driving changed over by the change-over switch 71, and in the case when the passenger cage 3 stops at an optional position where there is no riding door 9 and the position is a door opening and closing possible position, it is possible to open and close a cage door 8 in accordance with the door opening and closing button.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator, and more particularly to an elevator wherein a door can be opened and closed at an arbitrary position where the door can be opened and closed by operating a car during maintenance and inspection.

[0002]

2. Description of the Related Art In recent years, with an increase in the number of elevators to be maintained, simplification and speedy maintenance have become important. On the other hand, injuries have been sporadic in maintenance work. In particular, hoistway maintenance is an indispensable work item, but is insufficient in terms of ease of maintenance and inspection and ensuring safety.

As a prior art for improving the maintenance work as described above, Japanese Patent Application Laid-Open Nos. Hei 6-156914 and Hei 6-156914 disclose a method of temporarily stopping or issuing an alarm on the floor immediately below the lowest floor. No. 6,127,860.

Japanese Patent Laid-Open Publication No. Hei 7-285748 proposes a method in which an operation switch for maintenance and inspection is provided in a hoistway in order to efficiently perform inspection in the hoistway.

Further, Japanese Patent Laid-Open Publication No. Hei 4-298472 proposes a system in which a parking switch is used as a switch for hoistway operation and a check light in the shaft is turned on.

Further, Japanese Patent Application Laid-Open No. Sho 62-60787 proposes a system in which a maintenance operation device is provided on the lowermost floor, but it has not been practiced due to difficulty in securing an installation place. .

[0007] Conventionally, as an elevator inspection method for inspecting the state of the inside of a hoistway, a maintenance staff operates a car elevating switch and a door open / close switch installed on the car to raise and lower the car. The mainstream method is to inspect the inside of the hoistway while keeping it.

[0008]

As described above, the prior art is effective for simplifying maintenance work and improving safety, but has problems in cost and design. Has not been implemented.

The present invention has been made in view of the various problems described above,
An object of the present invention is to provide an elevator that makes it possible to easily perform maintenance and inspection and prevent an accident such as a personal injury or the like from occurring by using an existing device without adding a new device.

[0010]

The present invention employs the following means in order to solve the above-mentioned problems.

A hoistway, a car for elevating in the hoistway, a car elevating button and a door opening / closing button provided in the car, and the car in response to a command from the car elevating button. And an elevator control device that controls the opening and closing of the door in accordance with a command from the door opening and closing button, and provides a plurality of floors in the car for normal operation and maintenance. A changeover switch to switch between operation and operation is provided,
During the maintenance operation switched by the changeover switch, the elevator control device raises and lowers the car in response to a command from the car lift button, and stops the car at an arbitrary position without a door, When the position is a door opening / closing position, the car door can be opened / closed in response to a command from the door opening / closing button.

Further, the car is provided with a sound generating means for notifying that the door cannot be opened when the door opening / closing button is operated at a position other than the door openable / closable position.

Further, in addition to the command from the door opening / closing button, the door can be opened by selectively operating either the door opening / closing button or the car elevating button.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an overall configuration diagram of an elevator according to this embodiment.

In the figure, 1 is a hoistway of an elevator,
2 is an elevator control device for controlling normal operation and maintenance operation of the elevator, 3 is a car, 4 is a counterweight, 5 is a motor for raising and lowering the car 3 and the counterweight 4, 6 is various kinds of input / output signals in the car, etc. A tail cord for transmitting a signal to the elevator control device 2, a car operation panel 7 capable of various operations during normal operation and maintenance operation, 71 a normal-maintenance switch for switching between normal operation and maintenance operation, and 72 a normal-maintenance switch A car elevator button, 8 is a car door, 9 is a door, 10 and 11 are a car door-side door engaging device and a door-side door engaging device which are engaged when the door is opened and closed, respectively, and 12 is a moving distance of the car 3. Is an encoder that detects

The elevator control unit 2 includes a well-known microprocessor unit (not shown) including a RAM, a ROM, a CPU, etc., an I / O interface board for inputting and outputting various signals, a power supply circuit, and a motor control. It is composed of circuits and the like. A communication board terminal (not shown) is installed in each of the car 3 and the elevator hall (not shown). A car call and a hall call are input / output signals between the communication board terminal and the elevator controller 2. It is performed by transmission and reception.

The in-car operation panel 7 includes a normal-maintenance changeover switch 71 for switching between normal operation and maintenance operation, a car elevating button 72 for elevating and lowering the car 3, and a door opening / closing button for opening / closing a door (not shown). Is provided.

The car elevator button 72 may be provided with a dedicated car elevator button for maintenance operation. However, when no dedicated button is provided, the car call button on the top floor is an UP switch, and the car call button on the bottom floor is not. It may be used as a DOWN switch.

The normal operation and the maintenance operation can be performed by switching the normal-maintenance changeover switch 71. However, in order to prevent the door from being opened and closed by inadvertently operating the door open / close button, the door is closed. The door can be opened / closed by adding a cryptographic operation such as opening the door by morse (encryption) operation of the button or adding a door operation by pressing the UP or DOWN button while pressing the door close button first. It is possible.

The car position of the car 3 is determined by the motor 5
The distance data is calculated based on the number of encoder pulses from the encoder 12 connected to the elevator control device 2, and the elevator control device 2 is previously measured by measuring the floor height from the lowest floor to the highest floor.
Is calculated based on the distance data recorded in the ROM.

During normal operation, the elevator control device 2
Are controlled in accordance with instructions of a hall call button (not shown) or a car call button of the in-car operation panel 7, and perform control of raising / lowering the car 3 to a predetermined floor and controlling door opening / closing.

During the maintenance operation, the maintenance person operates the operation panel 7 in the car.
When the normal-maintenance changeover switch 71 is switched to the maintenance operation side and the car 3 is further moved up and down, the car elevating button 72 of the in-car operation panel 7 (when there is no car elevating button,
UP button for the top floor switch and D for the bottom floor button
The car 3 is moved up and down by operating the OWN. Furthermore, when opening and closing the car door 8,
The door 8 is operated to open and close the car door 8.

Also, during the maintenance operation, when the door-side door engaging device 10 and the car door-side door engaging device 11 are engaged, the door 9 can be opened and closed as in the normal operation. is there.

Next, a control block of the elevator control device 2 according to this embodiment will be described with reference to FIG.

In the drawing, the same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 61 denotes a line output when the normal-maintenance changeover switch 71 is switched to the normal operation side;
2 is a line output by switching the normal-maintenance changeover switch 71 to the maintenance operation side, and 63 is an encoder 1
Line from which the position signal of car 3 is input from 2, 64
Is a line to which a signal of a door opening / closing button is input during maintenance operation; 65 is a line to which a signal of a car up / down button 72 for raising / lowering the car 3 during maintenance operation;
Is a line for outputting a door opening / closing signal to a door opening / closing mechanism (not shown) during maintenance operation, 67 is a line for outputting a signal for raising and lowering the car 3 on the electric motor 5 during maintenance operation, and 201 is a normal line. A normal operation control unit that operates when the maintenance switch 71 is switched to the normal operation side, and a normal operation control unit 202 that operates when the normal-maintenance switch 71 is switched to the maintenance operation side.

Since the elevator control device 2 is configured as described above, when the normal operation signal 61 is inputted by the normal / maintenance changeover switch 71, the normal operation control unit 201 is driven. Normal operation control is performed.

When the maintenance operation signal 62 is inputted by the normal-maintenance changeover switch 71, the maintenance operation control unit 2
02 is driven, and when a car position detection signal 63, a door open / close signal 64, and a car elevating signal 65 are input, predetermined maintenance operation control is performed.

Next, a control procedure in the maintenance operation control unit 202 will be described with reference to a flowchart shown in FIG.

First, in step S1, a signal from the safety device or an abnormal operation of the elevator is detected to monitor the state of the elevator. When the elevator is abnormal, the maintenance operation is not performed. In step S2, a car position correction operation is performed when a deviation between the moving distance data of the car 3 and the distance data recorded in the ROM is detected so that maintenance and inspection are not performed in a state of a position shift. Next, in step S3, it is detected that the normal-maintenance switch 71 has been switched to the maintenance operation side, and the maintenance operation is started.

In steps S4 and S5, the car elevator 3 is operated by operating the car elevator button 72 in step S6 or step S7.

In step S8, the car position is detected, and it is determined whether or not the car position when the elevator is stopped is the door opening / closing permission position, and the opening / closing operation of the car door 8 is permitted. Step S
In step 9, when the door open switch is operated, step 1 is performed.
At 0, the car door 8 is opened. Step S
Considering a case where a contact or collision with a protrusion in the hoistway occurs during the door opening operation at 10, the door closing operation is performed when the operation of the door open switch is stopped. However, when the car door 8 is fully opened, the door is kept open. Further, if the door is opened even though the elevator stop position is not the door opening / closing permission position, the buzzer (not shown) provided in the car 3 sounds and the maintenance staff is in the door opening non-permission position. To inform.

In step S11, the elevator is inspected, for example, by examining the state of the landing-side hoistway and measuring the gap between the door-side door engaging devices and the car.

After the completion of the elevator inspection, step S12
By operating the door close switch, the car door 8 is closed in step S13.

As described above, according to this embodiment, the elevator 3 can be raised and lowered and the car side door 8 can be opened and closed by operating the in-car operation panel 7 of the car 3 during maintenance and inspection. Maintenance work can be performed safely and quickly. Further, compared to the related art, the open position of the car door 8 in the hoistway 1 is a position where the door-side door engaging device 10 and the car door-side door engaging device 11 are engaged to open and close the door 9. In addition to the above, the opening / closing of the car door 8 can be performed at a position other than a position where a door opening / closing mechanism (not shown) may be damaged by opening / closing the car door 8, and maintenance and inspection work can be easily performed over a wide range in the hoistway 1. it can.

[0037]

As described above, according to the present invention, at the time of maintenance of the elevator, the operation from the inside of the car can be performed.
In the hoistway, the door can be opened and closed over a wide area other than the door opening / closing non-permitted position, thereby preventing a possible physical injury caused by the maintenance and inspection work, and performing the maintenance and inspection work easily and quickly. be able to.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an elevator according to an embodiment of the present invention.

FIG. 2 is a block diagram of the elevator control device shown in FIG.

FIG. 3 is a flowchart showing a control procedure during a maintenance operation in the elevator control device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Elevator control device 201 Normal operation control unit 202 Maintenance operation control unit 3 Riding car 6 Tail code 7 In-car operation panel 71 Normal-maintenance changeover switch 72 Car lifting / lowering button 8 Car door 9 Door

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Matsudo 1070 Ma, Hitachinaka City, Ibaraki Prefecture Inside the Mito Plant of Hitachi, Ltd. Inside Mito Factory

Claims (3)

[Claims] 1. A hoistway, a car for elevating in the hoistway, a car elevating button and a door opening / closing button provided in the car, and the car in response to a command from the car elevating button. And an elevator control device that controls opening and closing of the door in accordance with a command from the door opening and closing button, and an elevator control device, comprising: a normal operation for servicing a plurality of floors in the car. And a changeover switch for switching between the maintenance operation and the elevator operation.The elevator control device raises and lowers the car in response to a command from the car elevator button during the maintenance operation switched by the changeover switch, and the car Stop at an arbitrary position without a door, and if that position is a door openable position, An elevator characterized by being able to open and close the door. 2. The car according to claim 1, further comprising: a sound generator for notifying that the door cannot be opened when the door open / close button is operated at a position other than the door open / close position. Elevator. 3. The method according to claim 1, wherein
The elevator according to any one of claims 1 to 3, wherein the door can be opened by selectively operating one of the door open / close button and the car elevator button in addition to a command from the door open / close button.