JP4782004B2 - Elevator landing door unlocking device - Google Patents

Description

  The present invention relates to an elevator landing door unlocking device for unlocking a landing door locking device.

For example, Japanese Patent Application Laid-Open No. 3-152085 discloses a conventional emergency unlocking device that unlocks a landing door locking device by manual operation by inserting an unlocking operation tool from the landing side.
However, in such a conventional emergency unlocking device, it is necessary to provide a keyhole for inserting the unlocking operation tool between the landing door or the landing door and the three-way frame, which reduces the design. End up.
Moreover, since it is the structure which operates a locking device by manual operation, it was difficult to relate the state of a locking device with the driving | operation control of a cage | basket | car.

The present invention has been made to solve the above-described problems, and is capable of preventing a decrease in design of the hall, and an elevator hall that enables operation control according to the state of the locking device. The purpose is to obtain a door unlocking device.
An elevator landing door unlocking device according to the present invention is for unlocking a landing door locking device, and receives an actuator for unlocking by operating the locking device and an unlock command signal. An unlock control unit that causes the actuator to perform an unlocking operation is provided.

FIG. 1 is a front view showing a hall of an elevator apparatus according to an embodiment of the present invention.
2 is a sectional view taken along line II-II in FIG.
3 is a rear view showing the main part of the hall of FIG.
FIG. 4 is a block diagram showing the overall configuration of the elevator apparatus of FIG.
FIG. 5 is a block diagram showing the configuration of each floor unlocking device of FIG.
FIG. 6 is a flowchart showing the operation of the unlocking control unit of FIG. 5 during maintenance work.

Preferred embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view showing a hall of an elevator apparatus according to an example of an embodiment of the present invention. In the figure, a landing entrance 21 is provided at the landing. Three-way frames 22 are fixed to both sides and the upper part of the landing entrance 21. The three-way frame 22 has a pair of vertical frames 23 a and 23 b and a curtain plate 24.
The hall entrance 21 is opened and closed by a pair of hall doors 25. A landing button device 26 is provided on the landing wall on the side of the landing entrance 21.
2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a rear view showing the main part of the landing in FIG. 3 is a view taken along the direction of arrow III in FIG. A hanger case 27 is fixed to the upper part of the landing entrance 21. A door rail 28 is fixed to the hanger case 27. The door rail 28 is parallel and horizontal to the entrance direction of the hall entrance 21.
A hanger plate 30 is fixed to the upper part of the door 25 of each landing via a bracket 29. Each hanger plate 30 is provided with a pair of hanger rollers 31 that roll on the door rail 28.
A locking device (latch mechanism) 32 that restricts the opening of the landing door 25 is provided on the upper portion of the landing door 25. The locking device 32 includes a latch 33 fixed to the door rail 28, a latch plate 34 swingably provided on the hanger plate 30, and an engagement member (not shown) of a car door (not shown). A pair of engaging rollers 35 and 36 and a return spring 37 are provided.
The latch plate 34 is normally engaged with a latch 33 as shown in FIG. 3, thereby restricting the opening operation of the landing door 25. Further, when the car door is opened with the engaging member of the car door engaged with the engaging rollers 35 and 36, the latch plate 34 is swung in the clockwise direction in the figure, and the latch of the latch plate 34 is latched. The engagement with 33 is released. As a result, the landing door 25 is opened together with the car door.
Further, when the door closing operation is completed after the door is opened, the engagement of the engagement member with the engagement rollers 35 and 36 is released, and the latch plate 34 is swung counterclockwise by the restoring force of the return spring 37. The latch plate 34 is engaged with the latch 33 again.
An electromagnetic solenoid 14 as an actuator that presses and swings the latch plate 34 is attached to the bracket 29.
A plurality of door legs 38 are attached to the lower end of the landing door 25. A threshold 39 is provided at the lower part of the landing entrance 21. The sill 39 is provided with a sill groove 39a into which the door leg 38 is inserted.
FIG. 4 is a block diagram showing the overall configuration of the elevator apparatus of FIG. In the figure, a driving device 2 is provided in the upper part of the hoistway 1. The drive device 2 has a drive device main body 3 including a motor and a brake, and a drive sheave 4 rotated by the motor. In the vicinity of the drive sheave 4, a rotatable deflecting wheel 5 is provided.
A plurality of main ropes 6 (only one is shown in the figure) are wound around the drive sheave 4 and the deflecting wheel 5. A car 7 is connected to one end of the main rope 6. A counterweight 8 is connected to the other end of the main rope 6. The car 7 and the counterweight 8 are suspended in the hoistway 1 by the main rope 6, and are raised and lowered in the hoistway 1 by the driving device 2.
The drive device body 3 is controlled by an operation control device (control panel) 9. An opening / closing sensor (door switch) 10 for detecting the opening / closing state of the landing door 25 is provided at the landing entrance 21 of each floor. All the open / close sensors 10 are connected to the operation control device 9. That is, the detection signal from the open / close sensor 10 is sent to the operation control device 9.
Each floor unlocking device 11 for unlocking the locking device 32 is provided at the landing on each floor.
A car switch 12 is provided on the car 7 to raise and lower the car 7 during maintenance work. The pit 1a of the hoistway 1 is provided with a non-latching switch 13 for raising and lowering the car 7 during maintenance work.
FIG. 5 is a block diagram showing a configuration of each floor unlocking device 11 of FIG. Each floor unlocking device 11 includes an electromagnetic solenoid 14, an unlocking control unit 15, a landing operation unit 16, and a hoistway operation unit 17. The electromagnetic solenoid 14 is unlocked by mechanically operating the locking device. The unlock control unit 15 receives the unlock command signal and causes the electromagnetic solenoid 14 to perform the unlock operation.
The landing operation unit 16 is accommodated in, for example, the landing button device 26 and can be operated by opening the cover of the landing button device 26. By operating the hall operating unit 16, an unlock command signal can be input to the unlock control unit 15.
In addition, a card reader may be provided in the hall operation unit 16 to operate the hall operation unit 16 using a dedicated card key, and security can be improved.
The hoistway operation unit 17 is disposed in the vicinity of the landing door 25 in the hoistway 1 and is operated from, for example, the car 7. The unlock command signal can be input to the unlock control unit 15 also by operating the hoistway operation unit 17.
The unlock control unit 15 includes a microcomputer including an input / output unit, a CPU (arithmetic processing unit), and a storage unit (ROM, RAM, and the like). The unlock control unit 15 is connected to the operation control device 9. When the operation mode of the operation controller 9 is the normal operation mode, the unlock control unit 15 invalidates the unlock command signal.
Further, the unlock control unit 15 causes the electromagnetic solenoid 14 to perform the unlock operation only within a preset time after receiving the unlock command signal.
Further, the unlock control unit 15 validates the unlock command signal from the hall operating unit 16 according to the position of the car 7. That is, the unlocking control unit 15 is effective only when the car 7 is stopped at a position where the unlocking command signal from the landing operating unit 16 other than the lowest floor landing can be loaded onto the car 7 from the corresponding landing. To do. In addition, the unlock control unit 15 stops the car 7 at a position where the unlock command signal from the landing operation unit 16 at the lowest floor landing can enter the pit 1a of the hoistway 1 from the bottom floor landing. Valid only when The position information of the car 7 can be obtained from the operation control device 9.
Furthermore, the operation control device 9 is from the time when the unlock command signal is input to the unlock control unit 15 from the hoistway operation unit 17 until the end switch (not shown) provided at the landing is operated. The movement of the car 7 is restricted. The end switch can be provided in the hall button device 26 together with the hall operation unit 16, for example. Further, the hall operating unit 16 may also serve as an end switch.
In addition, a portable external battery device 18 can be connected to the unlock control unit 15. The external battery device 18 is selectively connected to any one of all the unlock control units 15. By connecting the external battery device 18 to the unlocking control unit 15, it is possible to supply the power for driving the electromagnetic solenoid 14 to each floor unlocking device 11 even during a power failure.
The landing door unlocking device of this embodiment includes each floor unlocking device 11 and an external battery device 18.
Next, the operation will be described. FIG. 6 is a flowchart showing the operation of the unlocking control unit 15 of FIG. 5 during maintenance work. In order for the maintenance person to move on the car 7 or in the pit 1a, first, the operation mode of the operation control device 9 is switched from the normal operation mode (automatic operation mode) to the maintenance operation mode by a changeover switch (not shown).
When the operation mode is switched to the maintenance operation mode, it is confirmed whether or not an unlock command signal is input from the hall operating unit 16 (step S1). When the maintenance person moves on the car 7, he / she operates the landing operation unit 16 at the landing other than the lowest floor, and operates the lower floor landing operation unit 16 when entering the pit 1a.
When the unlock command signal is input, it is confirmed whether or not the car 7 is stopped (step S2). If the car 7 is safely stopped, it is confirmed whether or not the position of the car 7 is within a range that can be moved on the car 7 or in the pit 1a (step S3).
If the position of the car 7 is appropriate, an unlocking operation command is output to the electromagnetic solenoid 14 (step S4). Thereby, the electromagnetic solenoid 14 is excited, the latch plate 34 is swung, and the engagement between the latch 33 and the latch plate 34 is released. In this state, the maintenance staff can manually open the landing door 25 and can move from the landing entrance 21 onto the car 7 or into the pit 1a.
The opened landing door 25 is closed manually or by a biasing force of a door closer (not shown). Excitation of the electromagnetic solenoid 14 is continued for a preset time regardless of whether the landing door 25 is actually opened or closed.
After outputting the unlocking operation command, the unlocking control unit 15 confirms whether or not the landing door 25 is opened within the set time (step S5). Information on whether or not the landing door 25 is actually opened can be obtained from the operation control device 9.
If the landing door 25 is not opened within the set time despite the output of the unlocking operation command, the excitation of the electromagnetic solenoid 14 is completed, so that the latch plate 34 is re-engaged with the latch 33 and unlocking is performed. It will be canceled (step S6).
In addition, when it is confirmed that the landing door 25 is opened within the set time, a command for prohibiting movement of the car 7 under a condition other than the predetermined condition (start-up disable command) is output to the operation control device 9 (step S7). . The predetermined condition is an operation of the car top switch 12 when the landing door 25 other than the lowest floor is opened, and the non-latching switch 13 is operated when the lower floor landing door 25 is opened. It is an operation.
That is, when moving from the landing entrance 21 other than the lowest floor onto the car 7, the maintenance staff can raise and lower the car 7 by operating the car up switch 12. Further, when entering the pit 1 a from the landing entrance 21 on the lowest floor, the maintenance staff can raise and lower the car 7 by operating the non-latching switch 13. Except for these conditions, it is prohibited to start the drive device 8 including the maintenance operation, and the brake of the drive device 8 remains in the braking state.
When the maintenance staff returns to the landing, an unlocking command signal is input from the hoistway operating unit 17 to the unlocking control unit 15, and the landing door 25 is manually opened again. During the maintenance work, the unlock control unit 15 monitors whether the hoistway operation unit 17 has been operated (step S8). When the hoistway operation unit 17 is operated, an unlocking operation command is output to the electromagnetic solenoid 14 (step S9), and the electromagnetic solenoid 14 is excited for a preset time.
Thereafter, it is confirmed whether or not the end switch has been operated (step S10). If the end switch has been operated, a car movement permission command is output to the operation control device 9 (step S11). The car movement prohibition command is valid until the end switch is operated.
Finally, the operation mode of the operation control device 9 is returned to the normal operation mode, and the maintenance work is completed.
According to such a landing door unlocking device, since the locking device 32 is unlocked by the driving force of the electromagnetic solenoid 14, it is necessary to provide a hole for inserting the unlocking operation tool on the landing door 25 or around it. The design can be improved.
In addition, since the electromagnetic solenoid 14 is controlled by a command from the unlocking control unit 15, operation control corresponding to the state of the locking device 32 can be performed by connecting the unlocking control unit 15 to the operation control device 9. it can.
Furthermore, since the unlock command signal is invalidated when the operation mode of the operation control device 9 is the normal operation mode, the locking device 32 is not unlocked by mistake during the normal operation.
Furthermore, since the unlocking control unit 15 causes the electromagnetic solenoid 14 to perform the unlocking operation only within a preset time after receiving the unlocking command signal, when the unlocking command signal is erroneously input, It is possible to prevent the locking device 32 from being unlocked.
In addition, the unlock control unit 15 makes the unlock command signal from the landing operation unit 16 valid according to the position of the car 7, so that the landing door 25 is turned on when the car 7 is not stopped at an appropriate position. It is possible to prevent accidental opening.
Furthermore, since the external battery device 18 can be connected to the unlocking control unit 15, the unlocking operation can be performed even during a power failure.
Furthermore, since the movement of the car 7 is restricted after the unlock command signal is input from the hoistway operation unit 17 to the unlock control unit 15 until the end switch is operated, the maintenance operation is performed. The car 7 is not moved by mistake.
In the above example, the unlock control unit 15 is provided for each floor, but it is not always necessary to divide each floor. In other words, the actuators of all floors may be controlled by one unlock control unit. In this case, the unlock control unit may be provided in the operation control device, for example. Alternatively, the landing floor may be divided into a plurality of blocks, and an unlock control unit may be provided for each block.
Further, the actuator is not limited to an electromagnetic solenoid, and may be, for example, a linear motor, an air actuator, or a hydraulic actuator as long as it is an actuator that mechanically operates the locking device in response to an unlocking operation command from the unlocking control unit. Etc. can also be used.
Furthermore, in the above example, a two-door central opening type landing door is shown, but the number of landing doors and the opening and closing method are not limited to this, for example, a single opening type landing door The present invention is applicable.
Furthermore, in the above example, when the unlock command signal is input to the unlock control unit 15, it is confirmed whether the car 7 is stopped at a predetermined position. When the signal is input, the information is sent to the operation control device, and the car 7 is automatically moved to a position corresponding to the landing where the unlock command signal is input and stopped. An unlocking operation command may be output.

Claims (1)

An elevator landing door unlocking device having an actuator for operating and unlocking a landing door locking device, and an unlocking control unit for receiving the unlocking command signal and causing the actuator to perform the unlocking operation. There,
Provided landing, landing operation unit for inputting the unlocking command signal to the unlocking control unit,
End switch provided in the hall, and
An opening / closing sensor for detecting an opening / closing state of the landing door ;
The movement of the car is restricted from the time when the unlock command signal is input from the hall operation unit to the unlock control unit until the landing door is opened until the end switch is operated. A landing door unlocking device for an elevator.

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