JP2004256207A - Hydraulic elevator controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a passenger and a machine to get on and off smoothly without causing hindrance irrespective of precision of a sensor for detecting amount of sinking. <P>SOLUTION: This hydraulic elevator controller is constituted in such a way that, when a car 1 opens its door 10 based on passenger's call while it stands by in a door closed condition to realize a condition in which a passenger performs getting-on-and-off motion, floor matching control is uniformly performed irrespective of current amount of sinking (of course 15 mm or less) of the car 1 by a floor matching control means 7 and the door 10 is opened immediately after the floor matching control ends. Consequently, even the passenger such as a wheel chair user having hindrance in getting-on-and-off motion due to even slight amount of sinking can get on and off smoothly irrespective of precision of the sensor for detecting amount of sinking. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hydraulic elevator control device, and more particularly, to a technique for controlling a floor of a hydraulic elevator.
[0002]
[Prior art]
Hydraulic elevators have advantages such as the fact that there is no need to install an elevator machine room at the top of a building. Therefore, hydraulic elevators are often used instead of ordinary elevators using counterweights. However, recently, since an elevator of a counterweight type which does not require an elevator machine room has appeared, the significance of the latter merit has almost disappeared, and new installation of a hydraulic elevator has been reduced. Nevertheless, a significant number of existing hydraulic elevators are still in operation today.
[0003]
By the way, as the name implies, a hydraulic elevator is an elevator that uses hydraulic pressure as driving energy, and a specific troublesome phenomenon is a car sinking phenomenon. This is due to the fact that a car waiting on a certain floor sinks over a long period of time due to hydraulic oil leakage or contraction, etc. Is a phenomenon in which a step is generated. If such a step is left as it is, there is a possibility that an unexpected accident may occur such as a passenger falling over and falling down.
[0004]
Therefore, conventionally, as shown in Patent Document 1, for example, a sensor for detecting the amount of sinking of a car generated during standby is provided, and once it is detected that the car has sunk below a certain level, the car is once raised to a predetermined level, Then, the car is lowered again to adjust the car floor surface to the landing floor surface, that is, so-called "floor adjustment control" is to be performed. Therefore, when the waiting time of the car is long, such floor matching control is repeatedly performed many times.
[0005]
That is, immediately after the above-described floor matching control is executed, the landing floor and the car floor are almost at the same height, and there is almost no level difference. Subsidence of the floor surface occurs. The minimum squat amount that can be detected by the sensor used for the floor matching control is about 15 mm. When the squat amount reaches 15 mm, the floor matching control is executed again.
[0006]
[Patent Document 1]
JP-A-6-107382
[Problems to be solved by the invention]
The above-described floor matching control prevents a large step from being formed between the landing floor and the car floor. Here, as described above, the accuracy of the settlement amount detection sensor used for the floor alignment control is, for example, at most about 15 mm, and a small settlement phenomenon that does not reach 15 mm is not detected.
[0008]
However, depending on the user, even such a small sink may be unacceptable. For example, since a passenger in a wheelchair has a very difficult time getting on and off even with a small step of 15 mm or less, the sinking amount of 15 mm is an excessively large value in an elevator that is frequently used by passengers in a wheelchair. Further, when the use of a hydraulic elevator is incorporated in an automatic transfer process in a factory or the like, even if the sinking amount is 15 mm or less, the automatic transfer vehicle may not be able to perform the getting on / off operation, which is also unacceptable.
[0009]
The present invention has been made in view of the above circumstances, and regardless of the accuracy of a sensor for detecting a sinking amount, a hydraulic elevator control capable of smoothly getting on and off a passenger or machine trying to get on and off the vehicle. It is intended to provide a device.
[0010]
[Means for Solving the Problems]
As means for solving the above-mentioned problems, the invention according to claim 1 is a hydraulic elevator control device provided with floor matching control means for performing floor matching control, wherein the floor matching control means comprises the waiting car When the system detects that a landing floor call has occurred on the standby floor or detects that the door open button in the car has been operated, the car is temporarily raised until the predetermined control amount reaches the set level. Then, the car is lowered to the landing setting position to stop the car, and thereafter, the car is caused to perform the door opening operation.
[0011]
According to a second aspect of the present invention, in the first aspect, the predetermined control amount is a timer measurement time.
[0012]
The invention according to claim 3 is the invention according to claim 2, wherein the timer measurement time does not reach the set level even though the motor rotation speed of the hydraulic pump drive motor has reached a predetermined level. The floor adjustment control means determines that an abnormality has occurred in the timer.
[0013]
According to a fourth aspect of the present invention, in the first aspect, the predetermined control amount is a motor rotation speed of a hydraulic pump drive motor.
[0014]
According to a fifth aspect of the present invention, in the fourth aspect of the present invention, when the motor rotation speed of the hydraulic pump drive motor does not reach the set level even though a predetermined timer measurement time has elapsed, The adjustment control means determines that an abnormality has occurred in the motor rotation speed detector.
[0015]
According to a sixth aspect of the present invention, in the third or fifth aspect of the present invention, when the floor adjustment control means determines that the abnormality has occurred, it outputs a determination signal to the remote maintenance device. It is characterized by the following.
[0016]
According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, the floor adjustment control means is configured to move the car up to the landing setting position after the car has once risen until the car is completely stopped. And prohibiting a door opening operation based on a landing door opening function.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an explanatory diagram of an elevator system according to an embodiment of the present invention. The car 1 arranged in the hoistway is moved up and down by a support member 2 which is hydraulically driven by a hydraulic cylinder 3. The hydraulic cylinder 3 is supplied with pressure oil from a hydraulic pump 4, and the hydraulic pump 4 is driven by a hydraulic pump drive motor 5.
[0018]
The elevator control circuit 6 for controlling the operation of the elevator has a floor matching control means 7 and a timer 8, and the floor matching control means 7 controls the rotation of the hydraulic pump drive motor 5. The motor speed at this time is detected by a speed detector 9.
[0019]
A door 10 is provided at the entrance of the car 1, and passenger operation buttons such as a destination floor button 11 and a door opening button 12 are installed in the cabin of the car 1. Further, a hall call button 14 is provided in the hall hall 13. The operation signals of the destination floor button 11, the door opening button 12, and the hall call button 14 are sent to the floor matching control means 7.
[0020]
A car displacement detector 15 is mounted on the top of the car 1. The car displacement detector 15 detects the landing zone sensors 15a and 15d for detecting whether or not the car 1 is located in the door zone, and detects whether or not the car 1 is located in the landing zone. Door zone sensors 15b and 15c for the Here, the landing zone is a predetermined narrow area defined as the stop position of the car 1 (for example, an area whose distance from the landing floor is within 15 mm), and the door zone is wider than this landing zone. This is a predetermined area.
[0021]
As the landing zone sensors 15a and 15d and the door zone sensors 15b and 15c, for example, an optical sensor or a magnetic sensor can be considered. Further, a zone setting device 16 for setting a zone for a landing zone and a door zone is arranged in the hoistway. The zone setting device 16 is configured by a light projecting unit when an optical sensor (light receiving unit) is used as each sensor of the car displacement detector 15, and is configured by a magnetism generating unit when using a magnetic sensor. You.
[0022]
The car displacement detector 15 outputs a detection signal of each sensor to the floor matching control means 7. Then, the floor matching control means 7 determines that the car 1 is located in the landing zone when the ON signals are input from both the landing zone sensors 15a and 15d, and similarly, the door zone sensor 15b, When an ON signal is input from both of the terminals 15c, it is determined that the car 1 is located in the door zone.
[0023]
FIG. 2 is a flowchart for explaining the operation of FIG. As shown in FIG. 1, it is assumed that the car 1 is waiting at a landing on a certain floor (for example, the third floor) in a door-closed state (step 1). In this state, all of the sensors 15a to 15d output an ON signal to the floor adjustment control means 7. Then, the elevator control circuit 6 determines whether or not a hall call based on that the passenger at the hall on another floor has pressed the hall call button 14 has occurred, or whether any of the passengers on the car 1 It is determined whether a car call has occurred based on pressing the destination floor button 11 to go to another floor (step 2). Here, for example, when a passenger in the hall hall on the sixth floor presses the hall call button 14, that is, when the determination result in step 2 is "YES", the elevator control circuit 6 stops at the third floor now. The normal elevator operation is performed so that the car 1 moves to the sixth floor (step 9).
[0024]
On the other hand, if it is determined that neither a hall call nor a car call to another floor is generated, that is, if the determination result of step 2 is “NO”, the elevator control circuit 6 next causes the current car 1 to wait. Whether a passenger at the hall landing 13 on the floor (3rd floor) that has been pressed has pressed the hall call button 14 to generate a hall call, or one of the passengers on the car 1 has pressed the door open button 12. It is determined whether a door opening operation command has been issued (step 3).
[0025]
Here, if no hall call on the third floor is generated and no door opening operation command is generated, that is, if the determination result in step 3 is “NO”, the standby state is continued as it is. As described above, the car 1 gradually sinks. Then, the floor matching control means 7 determines whether or not the car 1 is currently located in the landing zone based on the detection signals from the landing zone sensors 15a and 15d (step 4). At this time, if the sinking amount of the car 1 is 15 mm or less, the detection signals of the landing zone sensors 15a and 15d are still on, and the determination result of step 4 is "YES", so that the process returns to step 1. Become. However, when the sinking amount of the car 1 exceeds 15 mm and one or both of the landing zone sensors 15a and 15d are turned off, that is, if the determination result of step 4 is “NO”, the floor matching control means 7 The normal floor matching control similar to that described above is performed (step 5), and the process returns to step 1 to continue the standby with the door closed again.
[0026]
On the other hand, if the determination result in step 3 is “YES”, that is, if the passenger in the hall landing 13 on the third floor presses the landing call button 14, or if any passenger in the car 1 When the button 12 is pressed, the elevator control circuit 6 has to open the door 10 so that passengers can get on and off between the car 1 and the hall landing 13. At this time, if the sinking amount of the car 1 is in a state where the sinking amount is considerably large (of course, the sinking amount is within 15 mm even though it is large), as described above, this state is as follows. Since this is an undesirable state for a passenger using a wheelchair, the floor matching control means 7 performs "new floor matching control" (step 6).
[0027]
Therefore, the contents of the new floor adjustment control will be described based on the flowchart of FIG. The floor adjustment control means 7 first prohibits the door opening operation based on the landing door opening function (step 6-1), and raises the car 1 in this state (step 6-2). Then, at this time, the floor matching control means 7 measures the elapsed time from the start of the ascent using the timer 8 (step 6-3), and detects the motor speed by the speed detector 9 (step 6). -4).
[0028]
Here, "landing door open" means to start the door opening operation immediately before the car is completely stopped at the landing position when the door is opened at the time of landing of the car. According to such a landing door opening function, the time required for opening and closing the door can be reduced, and the passenger can be given an impression that quick control is being performed. However, in this case, the size of the step between the floor of the car 1 and the floor of the hall platform 13 is a problem, and the car 1 is completely stopped by the execution of the landing door opening. It is not preferable that the passenger can get on and off. Therefore, the execution of the landing door open in step 6-1 is prohibited.
[0029]
Next, the floor matching control means 7 determines whether or not a predetermined time has elapsed since the raising of the car 1 (step 6-5). If the predetermined time has not elapsed, it is next determined whether or not the motor rotation speed of the hydraulic pump drive motor 5 has reached a predetermined level (step 6-10). It is raised (step 6-2). However, if the determination result of step 6-10 is "YES", that is, if the motor rotation speed has already reached the predetermined level although the time measured by the timer 8 has not reached the set level, the timer 8 May have failed. Therefore, the floor matching control means 7 determines in this case that the timer 8 is abnormal (step 6-11), and sends an abnormality determination signal to the remote maintenance device installed in the elevator maintenance company or the like. An alarm is issued (step 6-12). Upon receiving such an alert, the elevator maintenance company will take appropriate measures such as dispatching a staff member to the site.
[0030]
On the other hand, if the determination result in step 6-5 is "YES", the car 1 has risen by a distance sufficient to perform the floor matching control, and the floor matching control means 7 performs the raising operation. Is stopped (step 6-6), and then the car 1 is lowered (step 6-7). Thereafter, the floor matching control means 7 determines whether or not the car 1 is currently located in the landing zone based on the detection signals from the landing zone sensors 15a and 15d (step 6-8). If it is not located in the zone, the descending operation is continued until it is located. Then, the car 1 is stopped when it is detected that the car 1 has entered the landing zone (step 6-9).
[0031]
The above is the content of the “new floor matching control” shown in FIG. Returning to FIG. 2, the explanation will be continued. After the new floor matching control is performed by the floor matching control means 7 in step 6, the elevator control circuit 6 causes the door 10 to perform the door opening operation (step 7). The passengers waiting at the hall landing 13 or the passengers on the car 1 are brought into a state where they can perform the getting on / off operation. Since this time is immediately after the execution of the new floor matching control, the heights of the car floor and the landing floor almost completely coincide with each other, and even a passenger in a wheelchair (or an automatic transportation process used in the automatic transportation process). It is possible to carry out the getting on / off operation without any trouble (for a transport vehicle, etc.).
[0032]
In addition, the elevator control circuit 6 prohibits the opening of the landing door in step 6-1 but cancels it (step 8), and then continues normal elevator operation (step 9). Therefore, when the car 1 subsequently arrives on another floor, the landing door is opened, and the door 10 is opened immediately before the car 1 is completely stopped at the landing position.
[0033]
As described above, in this embodiment, when the car 1 must be opened and the passenger can perform the getting on / off operation based on the call of the passenger while the car 1 is in the door closed state and on standby, the floor matching control means 7 Performs the floor matching control uniformly regardless of the current sinking amount of the car 1 (although it is of course 15 mm or less), and opens the door 10 immediately after the floor matching control is completed. Even a passenger who may hinder the getting on / off operation even with a small amount of sinking can smoothly perform the getting on / off operation regardless of the accuracy of a sensor for detecting the amount of sinking.
[0034]
In the flowchart of FIG. 3, steps 6-5, 6-10, 6-11, and 6-12 surrounded by broken lines correspond to steps 6-5A, 6-10A, 6-11A, 6-6 shown in FIG. 12A.
[0035]
That is, after raising the car 1, the floor matching control means 7 determines whether or not the motor speed has reached a predetermined level (step 6-5A). If the predetermined level has not been reached, it is next determined whether or not a predetermined time has elapsed since the car 1 was raised (step 6-10A). If not, the flow returns to step 6-2. Further, the car 1 is raised. However, if the determination result in step 6-10A is "YES", that is, the timer measurement time has already passed the predetermined time even though the motor rotation speed detected by the rotation speed detector 9 has not reached the set level. In this case, it is considered that the rotation speed detector 9 has failed. Therefore, in this case, the floor matching control means 7 determines that the rotation speed detector 9 is abnormal (step 6-11A), and the remote maintenance device installed in the elevator maintenance company or the like is abnormal. A determination signal is issued (step 6-12A). Upon receiving such an alert, the elevator maintenance company will take appropriate measures such as dispatching a staff member to the site.
[0036]
【The invention's effect】
As described above, according to the present invention, when it is detected that a waiting floor call has occurred for a waiting car, or when it is detected that the door open button in the car has been operated Since the car is temporarily raised until the predetermined control amount reaches the set level, then the car is lowered to the landing setting position to stop the car, and then the car performs the door opening operation after that. Regardless of the accuracy of the sensor for detecting the amount of squat, the passenger or machine trying to get on and off can smoothly get on and off without any trouble.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an elevator system according to an embodiment of the present invention.
FIG. 2 is a flowchart for explaining the operation of FIG. 1;
FIG. 3 is a flowchart for explaining the contents of “new floor adjustment control” in step 6 of FIG. 2;
FIG. 4 is a flowchart for explaining steps that can be substituted for steps enclosed by broken lines in FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Car 2 Support member 3 Hydraulic cylinder 4 Hydraulic pump 5 Hydraulic pump drive motor 6 Elevator control circuit 7 Floor matching control means 8 Timer 9 Rotation speed detector 10 Door 11 Destination floor button 12 Door open button 13 Hall landing 14 Landing call button 15 Car displacement detectors 15a, 15d Landing zone sensors 15b, 15c Door zone sensor 16 Zone setting device

Claims (7)

A hydraulic elevator control device including floor matching control means for performing floor matching control,
The floor matching control means,
When it is detected that a waiting floor call has been made to the waiting car, or when it is detected that the door open button in the car has been operated, the predetermined control amount reaches the set level. The car is temporarily raised, and then the car is lowered to the landing setting position to stop the car, and then the car performs the door opening operation.
A hydraulic elevator control device, characterized in that: The predetermined control amount is a timer measurement time,
The hydraulic elevator control device according to claim 1, wherein: If the timer measurement time does not reach the set level even though the motor speed of the hydraulic pump drive motor has reached a predetermined level, the floor matching control unit determines that an abnormality has occurred in the timer,
3. The hydraulic elevator control device according to claim 2, wherein: The predetermined control amount is a motor rotation speed of a hydraulic pump drive motor,
The hydraulic elevator control device according to claim 1, wherein: If the motor rotation speed of the hydraulic pump drive motor does not reach the set level despite the lapse of a predetermined timer measurement time, the floor matching control unit determines that an abnormality has occurred in the motor rotation speed detector. Judge,
The hydraulic elevator control device according to claim 4, wherein: The floor matching control unit, when determining that the abnormality has occurred, outputs a determination signal to the remote maintenance device,
6. The hydraulic elevator control device according to claim 3, wherein: The floor matching control unit prohibits a door opening operation based on a landing door opening function until the car once descends to the landing setting position after the car once ascends and completely stops.
The hydraulic elevator control device according to any one of claims 1 to 6, wherein:

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