JP4517506B2 - Double deck elevator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a double deck elevator that drives at least two cabs up and down to drive in a hoistway.
[0002]
[Prior art]
In recent years, buildings have become larger and taller, and double deck elevators have been proposed in order to improve their transportation capabilities. This double-deck elevator runs two cabs that are normally connected in one hoistway at the same time. If the distance between the cabs is set appropriately, different floors can be serviced simultaneously. Can be increased.
[0003]
For example, as shown in FIG. 2, the upper car 1 and the lower car 2 are movably provided in the car frame 10 so that sufficient correspondence can be achieved even when the distance between floors as shown in FIG. 3 is different. It has become.
[0004]
Here, 11 is a cable-like body, for example a chain, with an upper car 1 attached to one end and a lower car 2 attached to the other end, and is suspended in the middle via a sprocket 12 provided above the car frame 10. Connected and configured to easily balance weight.
[0005]
Reference numeral 20 denotes a drive unit composed of, for example, a motor 21 and a jack 22, and is configured so that the lower car 2 can be moved up and down by the jack 22. Therefore, when the lower car 2 is raised, the upper car 1 is lowered at the same speed (and vice versa), and the distance between the upper car 1 and the lower car 2 can be freely adjusted.
[0006]
In a double deck elevator with such a mechanism, depending on the length of the car frame 10, it is possible to simultaneously serve a discontinuous floor, such as the lower car 2 is the first floor and the upper car 1 is the third floor. Thus, a wider double deck operation can be performed.
[0007]
[Problems to be solved by the invention]
In such a double deck elevator, it is desirable to always accurately grasp the distance between the upper and lower cars, and it cannot be said that a device for that purpose has been sufficiently developed.
[0008]
The present invention has been made in view of the above points, and an object of the present invention is to provide a double deck elevator that can always accurately adjust the distance between the upper and lower cars.
[0009]
[Means for Solving the Problems]
The present invention is an elevator provided such that a car frame that can freely move up and down in the hoistway and an upper car and a lower car in the car frame move synchronously in opposite directions.
1. Adjusting means for adjusting the distance between the upper and lower cars based on the current car interval during elevator traveling, and detecting means for detecting that the upper car and the lower car have passed a reference point for an arbitrary destination floor, When one car passes through the reference point and the other car passes through the reference point, there is provided a measuring means for measuring the moving distance of the car frame between them, and the current car according to the measuring means. Correction means for correcting the interval is provided.
2. The car frame is provided with a detecting device for detecting a reference position of at least one car, a measuring device for measuring a movement amount of the one car, and an interval adjusting device for upper and lower cars. When a car is detected, a car interval adjustment mechanism including a correction device for correcting the measurement result of the measuring device is provided, and a detector is provided for the upper car and a lower car, and a detector is provided near the floor in the hoistway. In the travel of the elevator to the destination floor, even though the correction device is operated in the process in which the car interval adjusting mechanism matches the interval of the upper and lower cars to the floor interval of the destination floor, If the detector of at least one of the car upon arrival is not opposed to the object detector halting the operation of the elevator.
Is.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention checks and grasps an accurate car interval while adjusting the car interval.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is an overall perspective view of a car showing an embodiment of the present invention, FIG. 4 is a state diagram showing an arbitrary state of the car shown in FIG. 1, and FIG. 5 is a view when an elevator car is landed on an arbitrary stop floor. FIG. 6 is a flowchart showing the operation of the present invention. For the sake of simplicity, only two types of cases where the floor interval of a building is wide and narrow will be described.
[0012]
In the figure, the same reference numerals as those in FIG. 2 denote the same components, but reference numeral 30 denotes a position detecting device for the lower car 2, for example, where the distance between the upper car 1 and the lower car 2 is in an intermediate state (hereinafter referred to as a reference position P Of the proximity switch, the photoelectric switch or the limit switch that can detect the interval of the car when the detector 31 provided in the lower car 2 and the detected object 32 provided in the car frame 10 face each other. Such a detection device. Of course, the reference position P may be the position of the maximum car interval or the minimum car interval. Reference numeral 40 denotes a pulse generator that generates a pulse when the motor 21 rotates after the detection device 30 operates, and reference numeral 41 denotes a microcomputer that counts the pulses of the pulse generator 40 and performs determination and processing described later.
[0013]
51 is a detector provided in the upper car 1, 52 is a detector provided in the lower car 2, 53 is a detector provided near each floor of the hoistway, and the detector 51, the detector 53, and When the detector 52 and the to-be-detected device 53 face each other, it is determined that an accurate landing has been performed on an arbitrary floor of the building.
[0014]
As can be seen from FIG. 4 and FIG. 5, since it is possible to measure in advance how far the lower car 2 moves from the reference position P at each target floor, the target car interval can be measured. Are counted by the microcomputer 41, and this numerical value is grasped for each floor and stored in the memory.
[0015]
Since elevator hall calls on the floor occur at any time, there may naturally be a situation where the elevator must stop at a different floor from the intended floor at the time of departure. It is desirable to start from the beginning or when the stop floor is fixed.
[0016]
As an operation according to the present invention, as shown in FIG. 6, depending on whether or not the car has started to decelerate, first, the distance between the floors of the target floor is read from the memory, and the current distance between the upper and lower cars (the departure time) Compare.
[0017]
If they match, do nothing and land on the destination floor (upper car 1 is n + 1 floor, lower car 2 is n floor), but if they do not match, motor 21 needs jack 22 Drive in any direction. That is, if the current state is narrow, the jack 22 is lowered, and if the current state is wide, the jack 22 is raised.
[0018]
And if it corresponds, the jack 22 will be stopped and it will land on the destination floor. At this time, the distance between the floors and the distance between the cars naturally match each other.
[0019]
Next, a case where correction is performed during car interval adjustment or a case where correction is performed during elevator travel will be described with reference to FIGS. 7 and 8. The portion surrounded by the broken line in FIGS. 7 and 8 shows a portion newly added to the operation shown in FIG.
[0020]
First, FIG. 7 shows a correction operation at the reference position P in the car frame 10, and FIG. 8 shows a correction operation at the reference point Q in the hoistway.
[0021]
In FIG. 7, when the lower car 2 passes the reference position shown in FIG. 4 at the time of adjusting the car interval, the correct car interval can be grasped, so the current car interval distance is reset to an accurate value. As a result, the pulse count error can be easily corrected, and the subsequent car interval measurement can be performed more accurately. Such correction may be performed not when the car interval is adjusted, but when the elevator is not in use. In that case, it is possible to set the reference position not to the intermediate position but to the maximum position or the minimum position of the car interval.
[0022]
Therefore, after that, the jack 22 stops when the upper car 1 and the lower car 2 continue to move up to the target floor interval. Then, each car will land on the target floor at the same time with extremely high accuracy.
[0023]
Here, as shown in FIG. 5, if the floor space and the car space are exactly the same, the detector 51, the detected device 53, the detector 52, and the covered device are detected regardless of whether the elevator car is running or stopped. The detector 53 should be opposed to the detector 53 at the same time, but in the unlikely event that the detector 53 does not face or the timing of the opposition is shifted, there is a problem with the adjustment detection mechanism such as the detection device 30, the pulse generator 40, the microcomputer 41, etc. I understand that there is.
[0024]
In particular, when none of the detectors 51 and 52 are opposed to the detected object 53 when the elevator is stopped, or when one of the detectors 51 and 52 is not opposed to the detected object 53, an abnormality has occurred. It is necessary to stop the operation of the elevator after that and to contact the maintenance company.
[0025]
Next, in FIG. 9, a reference point Q for car detection (a detailed description is omitted because it can be detected by a well-known detection device) is provided a predetermined distance before an arbitrary destination floor. If the car frame 10 passes while the distance between the destination floor and the car coincides, the upper car 1 and the lower car 2 should pass through each reference point Q (Q ₁ , Q ₂ ) at the same time. If the car passes with a deviation, it means that the car interval is not adjusted.
[0026]
When one car passes through the reference point Q and the other car passes through the reference point Q, an error in the car interval becomes clear by measuring the travel distance of the car frame 10 between them. Therefore, as shown in FIG. 8, the amount of deviation is measured, and the jack is again adjusted so as to coincide with the numerical value (correction interval) obtained as a result of adding or subtracting the amount of deviation to the car interval distance when passing through the reference point. What is necessary is just to operate 22 and finally adjust to the exact cage | basket | car space | interval.
[0027]
The reference point Q can be detected by the detectors 51 and 52 and the detector 53 described above. This is because the detector 53 has a predetermined length, so that a certain distance before the destination floor can be detected simultaneously.
[0028]
【The invention's effect】
As described above, according to the present invention, the distance between the upper and lower cars can be corrected simultaneously while moving the upper and lower cars with respect to the car frame, so that a double deck elevator capable of extremely accurate landing can be obtained. .
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a car showing an embodiment of the present invention.
FIG. 2 is an overall perspective view showing an example of a car of a double deck elevator.
FIG. 3 is a diagram showing a use situation of a conventional double deck elevator.
4 is a situation diagram showing an arbitrary state of the car shown in FIG. 1; FIG.
FIG. 5 is a situation diagram showing a state when an elevator car has landed on an arbitrary stop floor.
FIG. 6 is a flowchart showing the operation of the present invention.
7 is a flowchart showing a correction operation at a reference position P in the car frame 10. FIG.
FIG. 8 is a flowchart showing a correction operation at a reference point Q in the hoistway.
FIG. 9 is an overall view of a car showing an example of an apparatus for detecting a reference point Q in a hoistway.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Upper car 2 Lower car 10 Car frame 20 Drive unit 21 Motor 22 Jack 30 Detector 31 Detector 32 Detector 40 Pulse generator 41 Microcomputer 51, 52 Detector 53 Detector P Reference position Q Reference point

Claims (3)

In an elevator provided such that a car frame that can freely move up and down in the hoistway and an upper car and a lower car in the car frame move synchronously in opposite directions,
Adjusting means for adjusting the distance between the upper and lower cars based on the current car interval during elevator traveling, and detecting means for detecting that the upper car and the lower car have passed a reference point for an arbitrary destination floor,
When one car passes through the reference point and the other car passes through the reference point, there is provided a measuring means for measuring the moving distance of the car frame between them, and the current car according to the measuring means. A double deck elevator provided with a correcting means for correcting the interval.   The double-deck elevator according to claim 1, wherein the reference point is a point a predetermined distance before an arbitrary destination floor. In an elevator provided such that a car frame that can freely move up and down in the hoistway and an upper car and a lower car in the car frame move synchronously in opposite directions,
The car frame is provided with a detecting device for detecting a reference position of at least one car, a measuring device for measuring a movement amount of the one car, and an interval adjusting device for upper and lower cars. When a car is detected, a car interval adjustment mechanism including a correction device for correcting the measurement result of the measuring device is provided, and a detector is provided for the upper car and a lower car, and a detector is provided near the floor in the hoistway. Provided,
When the elevator traveled to the destination floor, the car interval adjustment mechanism arrived at the destination floor even though the correction device was activated in the process of matching the upper and lower car intervals to the floor interval of the destination floor. double deck elevator when the detector of at least one of the car is not opposed to the object detector, characterized in that halting the operation of the elevator when.

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