JPH0834571A - Elevator device - Google Patents

Abstract

PURPOSE:To prevent occurrence of wind noise in an elevator shaft in which a plurality of elevator cars run or a narrow elevator shaft, by determining a distance between the cars on running so that the speeds of the cars are lowered if the distance between the cars are within a predetermined value. CONSTITUTION:A program is stored in a ROM 1b in a group-control device 1. An elevator car 6a starts when it aligns with an elevator car 6b, and just after, they are controlled under the program. At first, vehicle information such as vehicle positions, running directions, speeds and loads are inputted. If the vehicles run in the same direction, when the distance between the vehicles is within a predetermined distance L=2 stories and a speed difference between the cars is lower than a predetermined value V, the loads in the cars are compared. If the load in the car 6a is 60% while the load in the car 6b is 30%, a speed lowering instruction is delivered to the car 6b. Accordingly, the car 6b runs at a speed which is lower than that of the car 6a which runs at a higher speed, and accordingly, the distance between the cars gradually increases. When the distance between the cars is longer than L=2 stories, the speed lowering instruction to the car 6b is removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator device for preventing noise generated by a car in a hoistway.

[0002]

2. Description of the Related Art When cars run side by side in a hoistway in which a plurality of cars run, or when cars enter a narrow hoistway at high speed, a loud wind noise is generated. In such a case, the following wind noise countermeasures have been conventionally proposed.

For example, the one disclosed in JP-A-53-61837 is provided with a wind noise detector in the hoistway, and when a wind noise of a predetermined level or more is detected, the speed of the car selected by the group management circuit. The car that is stopped is prevented from starting, and the car that is accelerating is blocked from acceleration.

Further, in the one disclosed in Japanese Patent Laid-Open No. 62-112187, when the hoistway is a single hoistway narrowed from the middle, it is necessary to prevent the car from plunging into the single hoistway before departure. The prediction calculation is performed, and the vehicle speed is reduced and the vehicle enters the vehicle.

Further, the one described in JP-A-49-124753 has a plurality of cars traveling in the same direction in the same hoistway, and there are other cars within a predetermined range of the stopped car. , To prevent the departure of a stopped car.

In Japanese Utility Model Laid-Open No. 2-129371, a plurality of cars are arranged side by side in the same hoistway, and when a plurality of cars depart in the same direction, their respective predetermined positions are set. The time required to pass through is calculated, and when the time difference between passing is within a predetermined value, the departure of the car is blocked.

Further, in the case of the Japanese Patent Application No. 5-238066, when the departure time difference is less than a predetermined time, the departure of the car having a later departure is prevented or the service depending on the number of passengers or the number of calls is made. The order of departure is decided according to the goodness of the bis index.

Further, the one disclosed in Japanese Patent Laid-Open No. 5-105337 is an elevator device in which hoistways with different floors communicate with each other. It detects that the vehicle is trying to pass a side, and temporarily stops in the vicinity of the standby car to suppress the generation of wind noise.

The system disclosed in Japanese Unexamined Patent Publication No. 5-286652 is one in which a car as far as possible from the living room is assigned to prevent noise to the living room near the hoistway.

[0010]

However, the conventional example described above has the following problems. JP 5
In the example of 3-61837, it is necessary to provide a wind noise detector, but this detector is expensive. Further, it takes time to control the speed after the noise is detected in the hoistway by the detector. Furthermore, no measures against wind noise in the opposite direction have been taken.

In the example of Japanese Patent Application Laid-Open No. 62-112187, the next stop floor is determined before departure and the vehicle travels with the speed lowered in advance, so that it takes extra traveling time and efficiency decreases.

In the examples of JP-A-49-124753, Japanese Utility Model Laid-Open No. 2-129371, and Japanese Patent Application No. 5-238066, the departure time and the passing position are calculated while the car door before departure is closed. Therefore, when the door opening button is operated on the way or the door is restarted by the landing button, the calculation cannot be performed accurately. In addition, in the case of a car whose departure was blocked, even if the door close button was pressed inside the car, the door did not close, which gave passengers a feeling of distrust. In addition, there is no countermeasure against crossing in the opposite direction because the vehicles are running simultaneously in the same direction.

In the example of Japanese Patent Laid-Open No. 5-105337,
Since the car is temporarily stopped to the side of the stopped car, operating efficiency is reduced.

In the example of Japanese Patent Laid-Open No. 5-286652,
If the distance between the living room and the hoistway of each car is the same, another measure against wind noise is necessary.

The present invention has been made in order to solve the above problems, and provides an elevator device capable of efficiently generating wind noise in a hoistway or a narrow hoistway in which a plurality of cars travel. The purpose is to get.

[0016]

SUMMARY OF THE INVENTION The present invention comprises a hoistway through which a plurality of cars travel, and information input means for inputting information about the position, travel direction, travel speed, and in-car load of the cars.
Based on the information input by this information input means, direction determining means for determining that the cars are traveling in the same direction, distance determining means for determining that the distance between the cars is within a predetermined distance, and the car The speed judgment means for judging that the speed difference between the cars is less than a predetermined value and the cars are traveling in the same direction, the distance between the cars is within a predetermined distance, and the speed difference between the cars is less than the predetermined value. Based on the determination that there is one, any one of the cars is provided with speed command means for issuing a command to reduce the traveling speed.

Further, according to the present invention, a hoistway on which a plurality of cars travel, information input means for inputting information on the position, traveling direction, traveling speed, and in-car load of the cars, and this information input means. Based on the information, the direction determining means for determining that the cars are traveling in opposite directions, the distance determining means for determining that the distance between the cars is within a predetermined distance, and the speed sum between the cars is a predetermined value. Based on the judgment that the speed judgment means for judging that the above is the case, the cars are traveling in opposite directions, the distance between the cars is within a predetermined distance, and the speed sum between the cars is a predetermined value or more, At least one car is provided with speed command means for issuing a command to reduce the traveling speed.

Further, according to the present invention, the speed command means may cancel the command to decrease the traveling speed based on the judgment that the distance between the cars has exceeded the predetermined distance.

In the present invention, the car whose speed is to be reduced may be the car with the smallest load in the car.

Further, according to the present invention, when three cars are traveling, the speed of the car at the center of the car arrangement may be reduced.

Further, the present invention provides a hoistway having an area having an area corresponding to a plurality of cars and an area having an area corresponding to one car, and a plurality of cars. When a car traveling in an area having a corresponding size enters an area having a size corresponding to one car, speed control means for lowering the traveling speed before a predetermined distance from this area is provided. It was done like this.

Further, according to the present invention, when the hoistway installed in the vicinity of the living room and the car traveling on the hoistway pass through the floor in which the living room is installed, the traveling speed is lowered a predetermined distance before the floor. And a speed control means.

[0023]

Function: The distance between the cars is judged during traveling, and the traveling speed of the car is reduced when the car is within a predetermined distance, so that the wind noise generated when the cars run side by side can be prevented.

When the distance between the cars exceeds a predetermined distance, the car speed is once lowered and the car speed is increased again, so that the car can be operated efficiently.

Further, since the speed of the car having the smallest load in the car is preferentially lowered, it is possible to prevent the service of passengers from being lowered.

Further, by lowering the speed of the center car of the three cars, it is possible to operate efficiently.

Further, when entering a narrow hoistway or passing near a living room, the car is decelerated from a predetermined distance, so that wind noise can be efficiently generated and prevented.

[0028]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, four elevators are arranged face-to-face with each other in a building on the 15th floor above the ground. FIG.
FIG. 1 is a block diagram showing a general elevator group management system. In the figure, reference numeral 1 is a group management device, which includes a central processing unit (CPU) 1a, a read only memory (ROM) 1b for storing programs, a random access memory (RAM) 1c for temporarily storing data, A computer is configured by the interfaces 1d, 1e and the like.

2 is a call button provided at the landing,
Reference numeral 3 denotes a hall call registration device that detects an operation of the call button 2 and registers a hall call. An output signal of the hall call registration device 3 is supplied to the interface 1d of the group management device 1. 4a-4
d is a platform management device for individually managing each elevator, 5a to
Reference numeral 5d denotes a drive device for each elevator, which is controlled by the respective car management devices 4a to 4d. Reference numeral 6a is an elevator car, and 7a to 7d are signal lines for connecting the respective car management devices 4a to 4d to the interface 1e of the group management device 1.

FIG. 2 shows a cross section of the hoistway when the two cars 6a and 6b travel on the same hoistway.
FIG. 3 is a car operation diagram shown in FIG. 2. 10A is an operation line of the car 6a, 10B is a conventional operation line of the car 6b, and 10C is an operation line of the car 6b according to the present invention.

Here, as shown in FIG. 2, the car 6a is 1F.
The case where the car 6b rises from 2F to 10F will be described. In this case, conventionally 10A and 1
Since the car 6b is operated according to the operation line of 0B, the car 6b is blocked from starting, and after the block is released, the car 6b starts to close the door and runs. Therefore, the car 6b is possible to start at t _1b ~t _1b ^{'unnecessarily} long time lag lag, such as between.

In the present invention, the car operates according to the flow chart shown in FIG. The program according to this flow chart is stored in the ROM 1b in the group management apparatus 1. The car 6b starts when it is lined up with the car 6a, and immediately after that, FIG.
This program operates at time t _X of. First, in step S41 on the flowchart of FIG. 4, car information such as car position, traveling direction, speed, and load is input. Step S
If the car is running in the same direction at 42, the answer is Yes at step S43.
If the car interval is within the predetermined distance L = 2 floors in step S43, the process proceeds to Yes in step S44. If the car speed difference is also less than or equal to the predetermined value V in step S44, the process proceeds to step S45 in Yes. Compare the internal loads.

Assuming that the load in the car is 60% for the car 6a and 30% for the car 6b, step S of a> b
Proceeding to 47, a speed reduction command is output to the car b. Note that a
In the case of <b, the process proceeds to step S48, and the speed reduction command is output to the car 6a. If a = b, the speed decrease command is output to the one with the lower car speed. This speed decrease command is taken into the speed changing circuit 49 of FIG.

FIG. 5 is a block diagram of the speed changing circuit 49 provided in the platform management devices 4a to 4d. In the figure,
Reference numeral 50 is a traveling signal, and 51 is a speed reduction command from the group management device 1. Normally, only 50 is used to generate a high-speed pattern at 54, and the speed comparison acceleration / deceleration device 56 compares it with the actual speed 57 of the car. If the speed of the car is lower than the pattern, the + acceleration signal 5
8. If it is high, the negative deceleration signal 59 is sent to the speed control circuit 60 to control the speed of the car.

When the speed decrease command 51 is input, the gate 52 is closed (the circle mark in front of the AND gate means that the signal is inverted), and the AND gate 53 is turned ON 55. The low speed pattern is generated. Then, the speed of the car is controlled by approaching the pattern while comparing the actual car speed 57 with the pattern. As a result operating line 10C as between time t _x ~t ₃ of the car 6b travels to the low speed compared with the basket 6a running at high speed, the car interval gradually spread.

Next, at time t ₃ in FIG. 3, when this program operates, the distance between the cars is L = 2 in step S43.
It becomes longer than the floor, and proceeds in the direction of No, step S49.
The speed reduction command to the car 6b is canceled. Then Fig. 5
The signal of 51 in the inside disappears, the AND gate 52 is turned on, and the high speed pattern of 54 is generated again. Next, at 56, since the pattern is larger than the current speed 57, the + acceleration signal 58 is output to the speed control circuit 60, and the car 6b is accelerated to the same speed as the car 6a and the second floor or higher. Drive at full speed with the car spacing maintained. As a result, parallel running in the hoistway can be prevented without unnecessarily arranging the cages.

Moreover, since the speed of the car having the smaller load in the car is decreased, it is possible to avoid a large decrease in the average value of the service completion time of passengers in the car. Further, since the wind noise detector is not used, it is possible to quickly control the wind noise by controlling the speed before the wind noise detected by the wind noise detector is generated. Further, since the car that is stopped is not prevented from departing or the car that is being accelerated is prevented from accelerating, a comfortable ride can be provided without giving distrust to passengers. Also, because an expensive wind noise detector is unnecessary,
Wind noise countermeasures can be implemented at low cost.

Example 2. Example 2 FIG. 4, FIG.
This will be described with reference to FIG. FIG. 6 is a diagram showing the hoistway when the cars 6a and 6b run in opposite directions, and FIG.
It is a partial flow chart connected to the portions A, B, and C of the flow chart. In this embodiment, as shown in FIG. 6, the car 6a rises from 1F and the car 6b descends from 11F. Therefore, in the flow chart of FIG. 4, since it is not in the same direction in step S42, the process proceeds to No. A. Then, the process proceeds to step S71 of FIG. 7, and if the car interval is within the predetermined interval L '(in this case, it is assumed to be the fifth floor) in step S71, step S71 proceeds to Yes and step S7.
In step 2, the speed sum, which is the speed when the cars 6a and 6b pass each other, is calculated, and the flow proceeds to step S73.

If the speeds of the cars 6a and 6b are in the express section and are almost the highest speed, the cars 6a and 6b are
The speed sum of b is a predetermined value S ₀ (this is the rated speed × 2 × 0.8
, And step S73 proceeds to Yes B, and returns to step S45 of the flowchart in FIG.
In step S45, the in-car loads are compared. If the in-car loads have a relation of a> b, the process proceeds to step S47, and 6
The car of b will decelerate. If a <b, the process proceeds to step S48, the car 6a is decelerated, and the wind noise at the time of passing is reduced. If a = b, the car with the lower speed decelerates. In the above flow, the car 6a and the car 6b
Either one of the cars is decelerated, but both cars may be decelerated.

Example 3. The third embodiment is an example of a case where three cars 6a, 6b and 6c run on the same hoistway, which will be described with reference to FIGS. 8 and 9. In FIG. 8, in the same hoistway, the cars 6a and 6c at both ends are raised and the car 6b in the center is raised.
Is descending. FIG. 9 is a flow chart for determining the traveling of these three cars, which is executed after executing the flow of FIGS. 4 and 7 for the cars 6a and 6b and the cars 6b and 6c, respectively. It

For example, the baskets 6a and 6b are shown in FIGS.
Assuming that the car 6a is selected as the target of the speed reduction command as a result of the execution of the flow No. and the car 6c is selected as the target of the speed reduction command as a result of the execution of the cars 6b and 6c, the flowchart of FIG. Step S81: Basket 6
Since there is a speed reduction command in a, the process proceeds to the direction of Yes. In step S82, one of the cars 6b and 6c has a speed reduction command. Therefore, the process proceeds to step S83 in the direction of Yes and the speed of the car 6b is determined in step S83. The decrease command is finally output, and the commands to the cars 6a and 6c are canceled.

As described above, the two vehicles at the both ends of the three vehicles do not slow down, but the one vehicle in the center slows down, so that the operation efficiency is not significantly lowered and the speed of the two vehicles is reduced as a wind noise prevention measure. The same measure can be taken.

Example 4. Example 4 is for preventing wind noise when the car enters a narrow hoistway from a wide hoistway. This embodiment will be described with reference to FIGS. FIG.
0 indicates a cross section of the hoistway on which the cars 6a and 6b travel, and 1F to 10F are hoistways each of which has a width of two cars.
₁ F to B ₃ F are hoistways of the size of one car. In such a hoistway, B ₁ F cage 6a from 1F~10F
Wind noise is generated when entering B ₃ F at high speed. For this reason, in this embodiment, the countermeasures shown in the operation line 100C of FIG. 11 are taken.

FIG. 11 is an operation diagram of the car 6a with the vertical axis representing speed and the horizontal axis representing time. In the figure, operating line 100
A shows a conventional operation method, in which the speed of the car is reduced when entering a narrow hoistway (at the time of X in FIG. 11). The operation line 100B is a modified example of the above, and the vehicle travels after the speed is reduced in advance while the car is stopped before entering the narrow hoistway.

In the present embodiment, the speed is reduced a little before traveling into the narrow hoistway as shown by the operation line 100C.
This process will be described according to the flowchart of FIG.
First, in step S121, information about each car such as the car position, direction, and speed is input. Next, in step S122, the car 6a is 3
It is determined whether or not F is descending at high speed, and if Yes, it is determined in step S123 whether there is a call signal of B ₂ F or B ₃ F, and if there is, a speed reduction command is issued to the car 6a in step S124. Output.

By reducing the running speed just before entering the narrow hoistway as described above, wind noise can be generated.
As in the case of 0B, the number of trains can reach the destination floor faster than in the case of the operation line 100B, the operation efficiency is not reduced, and the expensive wind noise detector is not used to prevent the generation of wind noise. You can

Example 5. The fifth embodiment is intended to prevent noise from being generated in a room when the room is adjacent to the hoistway. As shown in FIG. 10, the baskets 6a, 6
Living rooms are installed on the 8th and 9th floors adjacent to the hoistway where b runs. How the car b decelerates when it approaches the room will be described with reference to the flowchart of FIG. In step S125 of FIG. 12, it is determined whether the car 6b is climbing 6F at high speed. If the vehicle is climbing at high speed, step S126.
A speed reduction command is output to the car 6b. Thus, when the vehicle approaches the living room, the noise in the living room can be reduced by decelerating while traveling in front of the living room.

[0048]

As described above, according to the present invention, the distance between the cars is judged during traveling, and when the cars are within the predetermined distance, the traveling speed of the cars is reduced. Wind noise can be effectively prevented.

When the distance between the cars exceeds the predetermined distance, the car speed is once lowered and the car speed is increased again, so that the car can be operated efficiently.

Further, since the speed of the car having the smallest load in the car is preferentially lowered, it is possible to prevent the service of passengers from being lowered.

Further, by lowering the speed of the center car of the three cars, it is possible to operate efficiently.

Further, when entering a narrow hoistway or passing near a living room, the speed is decelerated from a predetermined distance, so that wind noise can be efficiently generated and prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing a general elevator group management system.

FIG. 2 is a two-way hoistway elevator according to an embodiment of the present invention.
FIG.

FIG. 3 is an elevator operation diagram according to an embodiment of the present invention.

FIG. 4 is a flowchart for car operation according to an embodiment of the present invention.

FIG. 5 is a block diagram of a speed changing circuit according to an embodiment of the present invention.

FIG. 6 is a two-way hoistway elevator according to a second embodiment of the present invention.
FIG.

FIG. 7 is a flowchart for car operation according to a second embodiment of the present invention.

FIG. 8 is a three-way hoistway elevator according to a third embodiment of the present invention.
FIG.

FIG. 9 is a flowchart for car operation according to a third embodiment of the present invention.

FIG. 10 is a sectional view of a two-car hoist elevator according to embodiments 4 and 5 of the present invention.

FIG. 11 is an elevator operation diagram according to a fourth embodiment of the present invention.

FIG. 12 is a flowchart for car operation according to Examples 4 and 5 of the present invention.

[Explanation of symbols]

First group management device, 1a Central processing unit, 1b ROM, 1c
RAM, 1d, 1e interface, 2 call buttons, 3 landing call registration device, 4a-4d management device,
5a-5d drive device, 6a-6c car, 7a-7d
Signal line, 49 Speed change circuit, 50 Travel signal, 51
Speed reduction command, 52 AND gate, 53 AND gate, 54 high speed pattern generator, 55 low speed pattern generator, 56 speed comparison acceleration / deceleration device, 57 car current speed, 58 acceleration signal, 59 deceleration Signal, 60 speed control circuit.

Claims (7)

[Claims] 1. A hoistway through which a plurality of cars travel, information input means for inputting information about the position, travel direction, travel speed, and in-car load of the cars, and the information input by the information input means. Direction determining means for determining that the cars are traveling in the same direction, distance determining means for determining that the distance between the cars is within a predetermined distance, and a speed difference between the cars is predetermined. A speed determining means for determining that the value is less than or equal to a value, the cars traveling in the same direction, the distance between the cars is within a predetermined distance, and the speed difference between the cars is less than or equal to a predetermined value. Based on the judgment of the above, an elevator apparatus comprising: speed command means for issuing a command to reduce the traveling speed to any one of the cars. 2. A hoistway through which a plurality of cars travel, information input means for inputting information about the position, traveling direction, traveling speed, and in-car load of the cars, and the information input by the information input means. Based on the direction determination means for determining that the cars are traveling in mutually opposite directions, a distance determination means for determining that the distance between the cars is within a predetermined distance, and a speed sum between the cars is predetermined. A speed determining means for determining that the value is less than or equal to a value, the cars are traveling in opposite directions, the distance between the cars is within a predetermined distance, and the speed sum between the cars is greater than or equal to a predetermined value. Based on the above judgment, at least one car is provided with a speed command means for issuing a command to reduce the traveling speed, and the elevator device. 3. The elevator according to claim 1, wherein the speed command means cancels the command to reduce the traveling speed based on the judgment that the distance between the cars has exceeded a predetermined distance. -A device. 4. The elevator apparatus according to claim 1, wherein the car whose speed is to be reduced is a car having the smallest load in the car. 5. The center car of the car arrangement reduces the speed when three cars are traveling.
The elevator device according to any one of 1 to 3. 6. A hoistway having an area having an area corresponding to a plurality of cars and an area having an area corresponding to one car, and a car corresponding to the plurality of cars. When a car traveling in an area having a space enters an area having a space corresponding to the one car, speed control means for lowering the traveling speed before a predetermined distance from the area is provided. An elevator device characterized by the above. 7. A hoistway installed near a living room and a speed at which a traveling speed of a car traveling on the hoistway is reduced by a predetermined distance from the floor when passing through the floor where the living room is installed. An elevator apparatus comprising: a control unit.