JP4719980B2 - 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, such as 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 13 denotes a drive unit including, for example, a motor 14 and a jack 15, and is configured so that the lower car 2 can be moved up and down by the jack 15. 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 addition, recently, there is an example in which the ceiling of the first floor, which is the standard floor, is particularly high, and it may take time to adjust the distance between the upper and lower cars.
[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 complete the necessary adjustment of the distance between the upper and lower cars before landing on the destination floor. However, since the target floor (next stop floor) changes depending on the call registration status that changes from time to time, special measures and measures are also required for adjusting the car interval.
[0008]
The present invention has been made in view of the above points, and in the operations of traveling the car frame and adjusting the distance between the upper and lower cars, a double deck capable of performing an accurate and harmonious operation according to the situation at the time. The purpose is to provide an elevator.
[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. Means are provided for starting the operation of the car interval adjusting device after the stop floor of the car frame is determined and before the start of deceleration.
2. In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second predicting means for predicting the time required, and when the time by the second predicting means becomes equal to or longer than the time by the first predicting means, the car interval adjusting device is operated.
3. In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second predicting means for predicting the time required, and when the time by the second predicting means exceeds the time by the first predicting means or when the stop floor is determined, the car is in an early stage. Activate the spacing adjuster .
In addition, in an elevator provided so that a car frame that can be raised and lowered in the hoistway and an upper car and a lower car in the car frame move synchronously in opposite directions,
4). In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call and a second prediction means for predicting the time required, towards the time by the second prediction means is longer than the time according to the first prediction means, before Symbol call is provided with means shall not answer.
5. In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second predicting means for predicting the time required, and when the time by the second predicting means is longer than the time by the first predicting means, it is Means is provided for the call to answer on the condition that the time by the first prediction means can be longer than the time by the second prediction means.
6). A first predicting means for predicting an elapsed time until the car frame responds to a call that changes every moment and responds to the call, and a time required for adjustment from the current upper and lower car intervals to a target interval. Second predicting means for predicting, and when the time by the second predicting means is longer than the time by the first predicting means , the speed at which the car frame is accelerated or operated at a constant speed is set to Means are provided for suppressing the speed by the first predicting means to a speed that is longer than the time by the second predicting means.
Is.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention, the car interval adjustment is completed during the traveling of the elevator according to the situation at the time, and the car interval adjustment operation is not performed as much as possible.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is an overall configuration diagram 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 state when an elevator car is landed on an arbitrary stop floor. FIG. 6 is a flowchart showing a call registration operation according to the present invention, FIG. 7 is a flowchart showing a car interval adjustment start operation according to the present invention, and FIG. 8 is a diagram at the time of adjusting the interval between upper and lower cars according to the present invention. It is a flowchart figure which shows operation | movement.
[0012]
In the figure, the same reference numerals as those in FIG. 2 denote the same components, but 20 is a main rope that couples the counterweight 21 to the car frame 10 and is wound around the drive sheave 22. 23 is an electric motor that drives the drive sheave 22, 24 is a speed control device that controls the electric motor 23, and 25 is a pulse that is coupled to the electric motor 23 and is proportional to the amount of rotation of the electric motor 23. A generated pulse generator 26 is a pulse counter that adds and subtracts the pulses generated from the pulse generator 25 according to the traveling direction of the car frame 10 and outputs a car position signal 26a. The speed command generating device 27, the pulse counter 26, and a part of the speed control device 24 can be integrally configured by, for example, a microcomputer.
[0013]
Reference numeral 30 denotes a position detection device for the lower car 2, for example, when 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). It is a detection device such as a proximity switch, a photoelectric switch, or a limit switch that can detect the interval of the car by facing the detector 32 provided on the frame 10. 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 14 rotates after the detection device 30 operates. Reference numeral 41 denotes a microcomputer that counts the pulses of the pulse generator 40 and performs determination and processing described later.
[0014]
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.
[0015]
As can be seen from FIGS. 4 and 5, since it is possible to predict in advance how far the lower car 2 will move from the reference position P in each target floor, the target car interval can be predicted from the pulse generator 40. Are counted by the microcomputer 41, and this numerical value is grasped for each floor and stored in the memory.
[0016]
The elevator hall call on the floor occurs at any time, so there may naturally be a situation where you have to stop on a different floor from the planned stoppage floor at the time of departure. It is desirable to do it from the time when it is confirmed, that is, when it is found that the car frame will not stop at the floor in front of the planned stoppage even if the car frame is decelerated right now, so that unnecessary adjustment of the car interval is not necessary. However, this adjustment takes time. In addition, there may be a balance with the time required for the elevator to travel to the next scheduled stop floor, and adjustment may not be completed during traveling.
[0017]
As an operation according to the present invention, when a new call is input as shown in FIG. 6, first, the car frame 10 travel time (planned speed, acceleration and target) when the car frame 10 actually answers the call. The travel time is estimated in advance by calculation from the distance) and the time required for adjustment from the current state of the upper car 1 and the lower car 2 to the floor interval of the floor of the call is compared. At that time, if the moving time of the car frame 10 is longer, the car interval can be adjusted during traveling, so that the call is registered. That is, the elevator can actually respond to the call.
[0018]
On the other hand, if the car interval adjustment time is longer, the call is not registered in principle. However, the car interval adjustment time is longer from the beginning, for example, the first floor operation, and in some cases, the second floor operation. In such a case, the car frame moving speed is determined so that the car frame moving time is equal to or longer than the car interval adjusting time, and the call is registered. And other calls are not registered.
[0019]
Next, in a situation where call registration exists, as shown in FIG. 7, in step 1, a determination procedure is roughly divided into an A route and a B route. That is, route A is when the next stop floor is confirmed (when it is found that the car frame 10 cannot stop before the planned stop floor even if the car frame 10 decelerates immediately), and route B is the next stop floor. This is the case when it is not fixed. Further, the A route is divided into an A ₁ route and an A ₂ route in Step 2, and the B route is also divided into a B ₁ route, a B ₂ route, and a B ₃ route in Step 3 and Step 4.
[0020]
That is, since the A route has been determined the next stop floor in step 1, in any case A ₁ route and A ₂ routes, but it club immediately the cage interval adjustment, for example, A ₂ route at Step 2 In the case where the car interval adjustment operation is not performed at the same time as the operation such as the divided first floor operation, the car frame speed is lowered so that the movement time of the car frame becomes equal to or longer than the car interval adjustment time.
[0021]
Next, if the next stop floor passes through the B route in which the next stop floor has not yet been determined in Step 1, the comparison between the car interval adjustment time and the car frame moving time is performed for the next stop planned floor in Step 3. If there is room in the car interval adjustment time, it will be possible to respond to a new call as the B ₁ route, and if the car interval adjustment time is longer than the car frame movement time, move to step 4 and compare again. through equally since the place in B ₃ route starts cage distance adjustment.
[0022]
On the other hand, depending on the situation of the building, for example, even if it is a second floor operation, even if the car interval adjustment is performed at the same time as the start of operation, there are cases where it takes more time to move the car frame. Is not confirmed (because it will be ready for 1st floor operation), it will take the B ₂ route. That is, as in the case of the A ₂ route, the car frame speed is reduced from the beginning so that the car frame moving time becomes equal to or longer than the car space adjustment time, and the car space adjustment operation is started.
[0023]
Here, an actual car interval adjusting operation will be described below with reference to FIG. First, when the floor to be actually landed is determined, the distance between the floors of the stop floor is read from the memory and compared with the current distance between the upper and lower cars (departure time). Alternatively, if the next stop floor is not fixed, the inter-floor distance of the next scheduled stop floor is read from the memory and compared in the same manner.
[0024]
If they do match, nothing is done and the floor (for example, the upper car 1 in FIG. 5 is the n + 1 floor and the lower car 2 is the n floor), but if they do not match, the motor 14 To drive the jack 15 in the required direction. That is, if the current state is narrow, the jack 15 is lowered, and if the current state is wide, the jack 15 is raised.
[0025]
And if it corresponds, the jack 15 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.
[0026]
In the above description, the car interval adjustment is performed when the next stop floor is confirmed, when the car interval adjustment time becomes equal to the car frame movement time, or at an earlier time. The car interval may be adjusted when the car frame is decelerated.
[0027]
【The invention's effect】
As described above, according to the present invention, the distance between the upper and lower cars is surely adjusted so that the distance between the upper and lower cars can be adjusted while the elevator is running, so that passengers can get on and off very quickly and safely. Become. In addition, in response to calls that change from moment to moment, it is possible to obtain a double-deck elevator that actually operates only on the next stop floor or planned stop floor and does not perform any extra operation.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram 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 a call registration operation according to the present invention.
FIG. 7 is a flowchart showing a car interval adjustment start operation according to the present invention.
FIG. 8 is a flowchart showing an operation at the time of adjusting the interval between the upper and lower cars according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Upper car 2 Lower car 10 Car frame 14 Motor 15 Jack 30 Detector 31 Detector 32 Detector 40 Pulse generator 41 Microcomputer 51, 52 Detector 53 Detector P Reference position

Claims (8)

In an elevator provided so that a car frame that can be raised and lowered in the hoistway and a car interval adjusting device move the upper car and the lower car in the opposite direction synchronously in the opposite direction,
A double-deck elevator comprising means for starting the operation of the car interval adjusting device after the stop floor of the car frame is determined and before the start of deceleration.   The double stop according to claim 1, wherein after the stop floor is confirmed, it is after a time when it is determined that the car frame cannot be stopped at the floor before the planned stop floor even if the car frame is decelerated immediately. Deck elevator. In an elevator provided so that a car frame that can be raised and lowered in the hoistway and a car interval adjusting device move the upper car and the lower car in the opposite direction synchronously in the opposite direction,
In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second prediction means for predicting the time required,
A double-deck elevator comprising means for operating the car interval adjusting device when the time by the second predicting means exceeds the time by the first predicting means. In an elevator provided so that a car frame that can be raised and lowered in the hoistway and a car interval adjusting device move the upper car and the lower car in the opposite direction synchronously in the opposite direction,
In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second prediction means for predicting the time required,
A means is provided for operating the car interval adjusting device at an early stage when the time by the second predicting means exceeds the time by the first predicting means or when the stop floor is determined. Double deck elevator. 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,
In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second prediction means for predicting the time required,
A double deck elevator comprising means for not answering the call when the time by the second prediction means is longer than the time by the first prediction means. 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,
In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second prediction means for predicting the time required,
When the time by the second predicting means is longer than the time by the first predicting means, the time by the first predicting means is reduced by reducing the raising / lowering speed of the car frame. A double-deck elevator provided with a means for answering the call on condition that it can be made longer. 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,
In response to a call that changes from time to time, a first prediction means for predicting the elapsed time until the car frame responds and answers the call, and adjustment from the current upper and lower car intervals to the floor interval of the call Second prediction means for predicting the time required,
When the time by the second predicting means is longer than the time by the first predicting means , the speed at which the car frame is accelerated or operated at a constant speed is set to the time by the first predicting means. Double decks elevator, characterized in that a means of suppressing the rate which is longer than the time by the second prediction means.   The double deck elevator according to claim 7, wherein the suppressing means is means for reducing a speed command value.

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