JP2015024881A - Elevator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably prevent a landing door from being erroneously opened on a landing where an elevator cage is not stopped.SOLUTION: An elevator system 10 comprises a portable holder 30 that holds an unlocking key 33 for opening a landing door 17, and a transmitter 32 that emits a signal for permitting detachment of the unlocking key 33 from the holder 30 to a landing 13 corresponding to a stop position of an elevator cage 12. Preferably, the holder 30 has a lock device 31, and the transmitter 32 emits an unlocking signal for unlocking the lock device 31.

Description

  The present invention relates to an elevator system, and more particularly to an elevator system that improves maintenance and inspection work.

  Generally, an elevator is regularly inspected and maintained by an operator having specialized knowledge. One example of such work is maintenance and inspection of equipment and the like installed in the downway. In this case, the worker rides on the car and works while raising and lowering the car. As a technique related to maintenance and inspection of an elevator, for example, Patent Document 1 discloses an elevator car work safety device provided with a lifeline and a mounting bracket for fixing the lifeline.

  In addition, when a worker who has been performing maintenance and inspection work on the car goes out of the hoistway and performs another work, the car's ceiling must be adjusted to the height of the floor of the hall. May stop. When entering the landing from within the hoistway, unlock the landing door and open the door. Then, when getting on the car again, the landing door is unlocked from the landing side with a special unlocking key and the door is opened.

JP 2012-218887 A

  By the way, the unlocking key can generally unlock any landing door. That is, the landing door can be opened even at a landing where the car is not stopped. Therefore, the operator accurately grasps the platform where the car is stopped so as not to make a mistake. However, it is important to reduce the burden on workers and to take double and triple safety measures.

  The elevator system according to the present invention includes a portable holder that holds an unlocking key for opening the landing door, and the unlocking from the holder with respect to the landing corresponding to the stop position of the car. And a transmitter for transmitting a signal for permitting removal of the key.

  In the elevator system according to the present invention, it is preferable that the holder has a lock device that locks the unlocking key, and the transmitter transmits a release signal of the lock device.

  In the elevator system according to the present invention, the elevator system includes position acquisition means for acquiring the position of the car in the hoistway, and the transmitter is installed at each landing, and is acquired by the position acquisition device. Based on the position of the car, the signal is transmitted from only one machine corresponding to the position, and the transmission area of the signal can be limited to only the hall where the one machine is installed.

  Alternatively, in the elevator system according to the present invention, the transmitter is installed in the car, and the signal transmission area is limited to only the landing closest to the ceiling of the car. it can.

  According to the elevator system according to the present invention, the worker removes the unlocking key from the holder only at the landing corresponding to the stop position of the car. For this reason, it is impossible for the landing door to be accidentally opened at the landing where the car is not stopped.

It is a figure showing the schematic structure of the elevator system which is a 1st embodiment of the present invention. It is a figure which shows the holder which comprises the elevator system which is the 1st Embodiment of this invention. It is a figure showing the hall which constitutes the elevator system which is an example of the 1st embodiment of the present invention. It is a flowchart which shows the control procedure of the elevator system which is the 1st Embodiment of this invention. It is a figure which shows schematic structure of the elevator system which is the 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The drawings referred to in the embodiments are schematically described, and the dimensional ratios of the components drawn in the drawings may be different from the actual products. Specific dimensional ratios and the like should be determined in consideration of the following description.

  In the present embodiment, a rope type elevator will be described as an example. However, the application of the present invention is not limited to this and can be applied to a machine room-less elevator and a hydraulic elevator. Further, in the present embodiment, it is assumed that maintenance inspection in the hoistway 11 is performed by the worker 100 wearing the safety belt 101.

<First Embodiment>
The elevator system 10 which is 1st Embodiment is demonstrated in detail, referring FIGS. 1-4.

  As shown in FIG. 1, an elevator system 10 includes an elevating mechanism unit that elevates and lowers between platforms 13 installed on each floor in a hoistway 11, and a control device 50 that controls the operation thereof. Prepare. As will be described in detail later, the elevator system 10 reliably prevents the landing door 17 from being accidentally opened at the landing 13 where the car 12 is not stopped during maintenance and inspection work. In the present embodiment, control for realizing such a function is executed by some functions of the control device 50.

  The hoistway 11 is an elevating passage for the car 12 provided so as to penetrate in a vertical direction in a building or the like. In the present embodiment, a hoisting machine 15 and a control device 50 that elevate and lower the car 12 are installed in an upper machine room 14 provided in the upper part of the hoistway 11. In the hoistway 11, many devices that require maintenance and inspection are installed.

  The car 12 has an indoor space in which a user can get in, and moves up and down in the hoistway 11 by driving the hoisting machine 15. The car 12 is provided with a car door 16 and a car door opening / closing device (not shown) for opening and closing the car door 16. When performing maintenance and inspection on equipment and the like installed in the hoistway 11, for example, the worker 100 rides on the ceiling 12z of the car 12 and performs the maintenance and inspection work while raising and lowering the car 12.

  The hall 13 is provided with a hall door 17 that opens and closes following the car door 16, a hall operating panel 18 connected to the control device 50, and the like. The hall operation panel 18 has, for example, an upward and downward hall call buttons and indicators for registering hall calls. The landing door 17 is locked so as not to open when the car 12 is not landing, but the operator 100 can unlock the landing door 17 from the hoistway 11 and open the landing door 17.

  The elevator system 10 is provided with an unillustrated landing detection sensor. As the landing detection sensor, for example, a vane such as an iron plate is installed at a predetermined location in the hoistway 11 corresponding to an appropriate landing position on each floor, and a magnetic detector for detecting the vane is installed on the car 12. The sensor of the structure installed in can be illustrated. The installation position of each vane is determined in advance, and the moving speed of the car 12 is also acquired from the number of revolutions of the hoisting machine 15 and so on, so that the position in the hoistway 11 can be obtained even when the car 12 is located between vanes. Can be accurately identified.

  The worker 100 who performs maintenance and inspection in the hoistway 11 on the ceiling 12z of the car 12 stops the car 12 by setting the ceiling 12z of the car 12 to the height of the floor of the hall 13. In some cases, the hall door 17 is opened and the hall 13 is exited. Then, the landing door 17 may be closed and then moved to another place to perform other work, and may enter the car 12 again. The elevator system 10 is a system that takes this case into consideration. Specifically, when the worker 100 gets into the car 12 again, a function for prohibiting the act so that the landing door 17 is not accidentally opened at the hall 13 where the car 12 is not stopped. Have

  As shown in FIGS. 1 to 3, the elevator system 10 is configured to allow the holder 30 that holds the unlocking key 33 and the removal of the unlocking key 33 from the holder 30 as a configuration for realizing the above functions. And a transmitter 32 for transmitting the above signal. In the present embodiment, these operations are controlled by the control device 50. The unlocking key 33 is an instrument for unlocking the landing door 17 from the landing 13 and opening the door, and all the landing doors 17 can be unlocked with one unlocking key 33.

  The holder 30 can be carried by the worker 100. In this embodiment, a storage case that can be attached to the safety belt 101 of the worker 100 is illustrated as the holder 30. The storage case includes, for example, a main body having a space in which the unlocking key 33 can be accommodated and a lid attached to the main body. For example, the worker 100 attaches the holder 30 to the safety belt 101 and performs maintenance and inspection work in a state where the unlocking key 33 is accommodated therein.

  The holder 30 preferably has a lock device 31 for locking the unlocking key 33. In the present embodiment, a lock device 31 is provided for locking so that the lid portion of the storage case does not open. Thereby, while the lock device 31 is operating, the removal of the unlocking key 33 is prohibited. For example, the lock device 31 includes a receiver (not shown) that receives a signal transmitted from the transmitter 32, and releases the lock when the signal is received.

  The transmitter 32 transmits a signal for permitting removal of the unlocking key 33 from the holder 30 to the hall 13 corresponding to the stop position of the car 12. “The hall 13 corresponding to the stop position of the car 12” is, for example, a hall where the car 12 is stopped in a state where the ceiling portion 12z coincides with the height of the floor. Further, the signal for permitting the removal of the unlocking key 33 is a release signal for releasing the lock of the lock device 31 in this embodiment.

  In this embodiment, the transmitter 32 is installed at each landing 13. A suitable installation location for the transmitter 32 includes the hall operating panel 18, but is not limited thereto. The transmitter 32 transmits the release signal only to the hall 13 where it is installed. That is, the transmission area of the release signal is limited only to each hall 13 where each transmitter 32 is installed. For example, the release signal of the transmitter 32 installed in the Nth floor hall 13 is the N + 1 floor hall. 13 is set so as not to reach.

  The control device 50 includes a position acquisition unit 51 and a lock release unit 52 in order to release the lock of the lock device 31 at an appropriate place by transmitting the release signal from the transmitter 32. The control device 50 includes a CPU, an input unit used to input control parameters used when executing the functions of the above-described means, a recording unit that stores control parameters, control programs, and the like, an input / output port, and the like It is a computer provided with. Each function can be realized by executing software, for example, a corresponding control program.

  The position acquisition means 51 has a function of acquiring the position of the car 12 in the hoistway 11. Since the elevator system 10 is provided with a device for detecting the position of the car 12 in the hoistway 11 as described above, the position acquisition means 51 acquires the position of the car 12 from the device. The information is used for unlocking the lock device 31.

  Based on the position of the car 12 acquired by the position acquisition means 51, the lock releasing means 52 transmits the release signal only to the transmitter 32 installed at the landing 13 where the car 12 is stopped. It has a function. For example, when the ceiling 12z of the car 12 is stopped in line with the floor of the fifth floor hall 13, the release permission transmission command for the transmitter 32 installed on the fifth floor hall 13 is provided. And only the transmitter transmits a release signal. Further, other than the hall 13 on the fifth floor, for example, the release signal is not transmitted from the transmitter 32 installed in the hall 13 on the fourth floor. In addition, the transmission area of the cancellation | release signal transmitted from the transmitter 32 installed in the hall 13 of the 5th floor is limited within the hall.

  Next, referring to FIG. 4, the control procedure of the elevator system 10 having the above-described configuration (the procedure from when the operator 100 stores the unlock key 33 in the holder 30 to when the unlock key 33 is taken out again) Will be explained.

  First, the worker 100 who performs the maintenance and inspection work of the elevator system 10 stores the unlock key 33 in the holder 30 attached to the safety belt 101 (S10). For example, from the time when the unlocking key 33 is housed in the holder 30 and the locking device 31 is operated, or from the time when the elevator system 10 is set to the maintenance / inspection mode, the control procedure after S11 (hereinafter referred to as “this control procedure”). ) Is executed.

  Here, the worker 100 who has performed the maintenance and inspection in the hoistway 11 on the ceiling 12z of the car 12 stops the car 12 with the ceiling 12z aligned with the floor height of the hall 13, and It is assumed that the user enters the car 12 again after going out 13 and performing other work. In the following, it is assumed that the car 12 is stopped at the hall 13 on the fifth floor.

  When this control procedure is started, the position of the car 12 in the hoistway 11 is first acquired by the function of the position acquisition means 51 (S11). Subsequently, based on the position of the car 12 acquired by the position acquisition means 51, a release signal of the lock device 31 is transmitted from the corresponding transmitter 32 (S12). This procedure is executed by the function of the lock release means 52. The corresponding transmitter 32 is a transmitter 32 installed in the hall 13 where the car 12 is stopped, that is, the hall 13 on the fifth floor. The release signal transmission area is limited to the hall 13 on the fifth floor.

  When the release signal is transmitted from the transmitter 32 and the worker 100 is at the hall 13 on the fifth floor, the release signal is received by the receiver of the lock device 31 (S13). Then, the lock device 31 that has received the release signal is unlocked, and the unlock key 33 can be removed (S14). On the other hand, when the worker 100 mistakenly goes to the landing 13 on the fourth floor, the release signal is not received and the lock of the lock device 31 is not released.

  As described above, according to the elevator system 10, the unlocking key 33 can be taken out from the holder 30 only at the fifth floor hall 13 where the car 12 is stopped. For this reason, it is possible to reliably prevent the landing door 17 from being accidentally opened at the landing 13 where the car 12 is not stopped.

<Second Embodiment>
The elevator system 10x according to the second embodiment will be described in detail with reference to FIG. Here, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted, and differences from the first embodiment will be mainly described.

  As shown in FIG. 5, the elevator system 10 x is different from the first embodiment in that a transmitter 32 x is installed in the car 12. A suitable installation location for the transmitter 32x is the ceiling 12z of the car 12. In this case, the release signal transmitted from the transmitter 32x is installed so that the transmission area is only the landing 13 closest to the ceiling 12z of the car 12. Then, a release signal is transmitted only to the hall by the function of the lock release means 52x.

  According to the elevator system 10x, the unlock key 33 is allowed to be taken out at an appropriate hall 13 without installing a transmitter at each hall 13 and without acquiring the position of the car 12 in the hoistway 11. be able to.

  In addition, the said embodiment can be design-changed in the range which does not impair the objective of this invention.

  In the above description, it is described that the lock device 31 is unlocked by the release signal transmitted from the transmitter 32. However, the signal transmitted from the transmitter 32 is not limited to the lock release signal. For example, a notification device such as a lamp or a buzzer may be provided in the holder 30 and the notification device may be operated by a signal from the transmitter 32. In this case, the worker 100 can know that the removal of the unlocking key 33 from the holder 30 is permitted by operating the notification device.

  10 elevator system, 11 hoistway, 12 passenger car, 12z ceiling, 13 landing, 14 upper machine room, 15 hoisting machine, 16 car door, 17 landing door, 18 landing operation panel, 30 holder, 31 lock device, 32 transmission Machine, 33 unlocking key, 50 control device, 51 position acquisition means, 52 unlocking means, 100 worker, 101 safety belt

Claims (4)

A portable holder that holds an unlocking key to open the landing door,
A transmitter for transmitting a signal for permitting removal of the unlocking key from the holder to the landing corresponding to the stop position of the car;
An elevator system comprising: The elevator system according to claim 1,
The holder has a locking device for locking the unlocking key;
The transmitter is an elevator system that transmits a release signal of the lock device. The elevator system according to claim 1 or 2,
Comprising position acquisition means for acquiring the position of the car in the hoistway;
The transmitter is installed at each landing, and the signal is transmitted from only one vehicle corresponding to the position based on the position of the car acquired by the position acquisition device. The transmission system is an elevator system that is limited to the hall where the one aircraft is installed. The elevator system according to claim 1 or 2,
The transmitter is installed in the car, and the signal transmission area is limited to only the landing closest to the ceiling of the car.

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