JP4595200B2 - 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. In recent buildings, the ceiling of the first floor, which is usually the reference floor, is very high, and in such an elevator operation from the first floor, traveling is performed with a particularly wide space between the upper and lower cars.
[0007]
[Problems to be solved by the invention]
A high-speed elevator with a speed of 300 m / min or more is not uncommon in recent elevators. In such a double deck elevator, when the vehicle is kept running from a floor with a large floor space, that is, an upper car 1 If the car 2 runs at a high speed with the lower car 2 away, there is a high possibility that the car may sway or wind noise due to wind pressure. It is also said that even with a relatively low speed of 150 m / min, problems with vibration and noise occur in the case of a single hoistway.
[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 with less vibration noise.
[0009]
[Means for Solving the Problems]
The present invention, in an elevator in which the interval between the car and the lower car is adjustably constructed by car distance adjusting device on which elevator the hoistway, if the elevator is traveling at a predetermined value or more speeds, between a minimum of the car it is intended to provide a means for driving the cage interval adjustment device such that the septum.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is provided with a well-balanced car interval adjusting device, and continues operation by changing to a state with less running resistance during high-speed running.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view of a car showing an embodiment of the present invention, and FIG. 4 is a flowchart showing the operation of the present invention.
[0012]
In the figure, the same reference numerals as those in FIG. 2 denote the same parts, but reference numeral 30 denotes a position detecting device for the lower car 2, for example, and when the distance between the upper car 1 and the lower car 2 is the minimum, the lower car 2 is a detection device such as a proximity switch, a photoelectric switch, or a limit switch that can detect the interval of the car when the detector 31 provided in 2 and the detected object 32 provided in the car frame 10 face each other. Reference numeral 40 denotes a pulse counting device when the motor 21 rotates after the detection device 30 is operated. The pulse counting device 40 measures the distance between the upper and lower cars by measuring the moving distance of the lower car 2.
[0013]
1 and 4, when the car speed to the target floor is a predetermined value, for example, at a high speed of 300 m / min or more, first the jack 22 is raised by the motor 21 and the distance between the car vertically above and below the corner. To the minimum state. That is, in the case of this embodiment, the jack 22 is raised until the detection device 30 is activated. The detection of the minimum interval between the upper and lower cars can be performed by providing the detection device 30 at the reference position and measuring the movement distance of the car from the reference position. In addition, the predetermined value of the car speed is naturally related to the shape of the car of the double deck elevator and the distance between the upper and lower cars, so it is difficult to specify a specific value. For example, a speed of 150 m / min may be considered.
[0014]
Next, when the actual speed of the car becomes a predetermined value or less, the distance between the floors of the target floors and the distance between the upper and lower cars are matched. In other words, if the stop floor interval is the vertical car interval at this time, the jack 22 is landed on the target floor in the stopped state, but if the vertical car interval needs to be widened, the stop floor interval is set. The jack 22 is lowered so that it fits. At this time, the pulse counting device 40 can sequentially check the upper and lower car intervals, and if this interval coincides with the stop floor interval, the jack 22 is stopped.
[0015]
On the other hand, when the command speed is originally less than the predetermined value, the upper and lower car intervals at that time, which are known in advance, are compared with the target floor interval. The jack 22 is lowered if the upper and lower car intervals are smaller, and the jack 22 is raised if the upper and lower car intervals are larger, so that the stop floor interval and the upper and lower car intervals are aligned.
[0016]
In the above description, an example has been described in which the upper car and the lower car move freely in the car frame. However, a double deck elevator without a car frame is also currently proposed. It is also possible to apply. In the practice of the present invention, the upper and lower car interval adjusting mechanism is not limited to the mechanism shown in FIG. 1, and other mechanisms may be used, and the upper and lower car interval detecting device is similarly limited to the embodiment. Not. Furthermore, if a person skilled in the art changes the status of call registration to an elevator from time to time, it may be possible to change the response corresponding to the situation each time so that the present invention can be implemented. .
[0017]
【The invention's effect】
As described above, according to the present invention, in the case of driving with high probability of occurrence of vibration and noise due to wind noise and wind pressure, the elevator is driven with a small interval between the upper and lower cars, so that a double ride with good riding comfort is achieved. You can get a deck elevator.
[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.
FIG. 4 is a flowchart showing the operation of the present invention.
[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 count device

Claims (4)

An elevator the distance between the car and the lower car is adjustably constructed by car distance adjusting device on which elevator the hoistway when the elevator is traveling at a predetermined value or more speed is a minimum cage interval As described above, a double deck elevator provided with means for driving the car interval adjusting device. The double deck elevator according to claim 1, wherein the speed equal to or higher than the predetermined value is a speed equal to or higher than 150 m / min. The double deck elevator according to claim 1, wherein the upper car and the lower car are movably provided in a car frame that moves up and down integrally in the hoistway. The double deck elevator according to claim 1 , wherein the car interval adjusting device includes a device for detecting a minimum car interval.

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