JPS58152768A - Controller for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (,) Description of the Technical Field The present invention relates to an improvement in an elevator control device, and particularly to a technique for preventing wind noise in a plurality of elevators running side by side in a narrow hoistway.

(b) Explanation of the prior art and its problems In elevators, if the distance between the hoistway wall and the car is small, when the car runs at high speed, the air around the car will flow at high speed, causing wind noise. emits.

FIG. 1 shows the configuration of a typical single hoistway elevator having one hoistway for one car. The elevator hoistway 1 is normally constructed of a hoistway wall for fire prevention reasons, except for the rope hole 3 located between it and the machine room 2, and the entrances and exits of each floor landing (not shown), which are completely closed while the elevator is running. It has a structure that closes after 9 seconds. The passenger car 4 and the hanging weight 5 are driven by a hoist 6 via a rope 7 to move up and down within the hoistway 1, thereby transporting passengers.

Figure 2 is a sectional view taken along the line 1-1 in Figure 1, and shows that as the cars and cars 4 move up and down, the air in the hoistway 1 flows in the opposite direction to the movement of the cars and cars. Hoistway 119 passing by
The wind speed ωO is high.

For simple rounding, assuming that air is an incompressible fluid and ignoring the influence of the hanging weight 5, the following formula (1) is obtained.
It becomes as shown in .

c ω□e: %ν・・・・・・(1)-8c Here, ω0: Wind speed at the side surface of the elevator shaft 4 relative to the hoistway wall 9
(Yumi Otsusashi) 8
: Horizontal projected area of the inside of hoistway 1 (m'') 8c: Horizontal projected area of the elevator seats 4 (a) ν: Speed of the elevator seats 4 (Year) The elevator seats 4 are in the opposite direction to the wind direction Since the wind is moving at a speed ν, the speed ω of the wind with respect to 4 is roughly expressed as equation (2).

Here, ω: Wind speed relative to the car (m/W-) Recently, it has been strongly required from the profitability of buildings to make the area 8 of the elevator hoistway 10 as small as possible. In order to minimize the number of parallelly installed elevators, the cars tend to become larger and the horizontal projected area 8c of the car 4 tends to become larger. This high-speed air flow ω generates air vortices around the seats and 4, creating a kind of piston effect that generates typhoon-like noise (wind noise), causing a great sense of anxiety for passengers. It has become more common to give

In elevator group management control, where multiple elevators are managed as a group, two or more cars are often installed together in the same hoistway, and the wind noise described above does not normally occur, but when the cars are installed together in the same hoistway. When all the elevators (usually 2 to 4 elevators) travel in the same direction at high speed, the action of the pistons generates significant wind noise, which gives an extremely unpleasant impression to elevator passengers.

In order to prevent the above-mentioned wind noise, it is possible to prevent air from escaping, but this is often impossible from an architectural standpoint, and it has been desired to avoid the occurrence of noise by controlling elevators.

Conventionally, a process similar to that of a queen has been used to round off the above-mentioned problems.

(1) If there is an elevator car heading in the same direction within a predetermined range, the departure of the elevator car that is currently stopped will be delayed.

(2) K within a predetermined range when a stopped passenger departs;
When there is another vehicle heading in the same direction as the vehicle about to depart, the maximum speed or acceleration/deceleration of the vehicle about to depart is lowered than normal to cause the vehicle to depart.

However, the wind noise becomes a problem when the speed of the steering wheel is greater than approximately 150 m/min. No matter which rider eats the meat, if one side is doing a short run, the speed will not increase and there will be no problem. In addition, even when both are on a long run, there is no problem if the airflow is not restricted due to the relationship between the two passengers being first and last in the high speed range. IK riders are running very close together, or 1 in front.
It is difficult to predict whether they will run side by side with a difference of about the same as a floor, and requires a complicated control device.Moreover, in order to compensate for the poor prediction accuracy, there is a case of preventing side-by-side running, which is on the safe side, i.e., suppressing departure. This had to occur at a higher rate than necessary, reducing the efficiency of group management and causing long waiting calls, which was rather inconvenient for passengers.

Another disadvantage is that the circuit becomes complex when the number of cars running parallel to each other in the same hoistway increases.

(c) Purpose/Overview of the Invention The present invention has been made in view of the above points, and by using a simple device to more reliably predict and prevent the occurrence of wind noise during parallel running, the influence on the group management control system is achieved. The purpose of this project is to realize a wind noise prevention technology that can reduce wind noise during parallel running.

The present invention provides a method for detecting wind speed or wind pressure in the hoistway at a predetermined value on at least one car of a plurality of cars arranged in a common hoistway. A detector is provided to detect the onset of summer, and if the detector operates when all cars in the same hoistway are moving in the same direction, a deceleration command is issued to one of the cars. It is characterized by issuing a forced deceleration command to the nearest floor where it can be stopped by normal deceleration (hereinafter referred to as the "nearest floor").Furthermore, the other %gL of the present invention is determined by either one of the elevators in the same hoistway. The feature is that when one vehicle is scheduled to stop at the nearest floor, the vehicle is stopped.

(d) Structure of the Invention Figure 3 shows an embodiment of the present invention in which the A and B4 machines are installed in the same hoistway 1. The two elevator cars on the plane are 4m long.

4b is also installed. hoistway l
It has a sealed structure with the hoistway wall 9 except for the rope hole 3b between the machine room 2 and the entrances and exits of the landings on the 1st to 10th floors (not shown). The car 414b and the hanging weights 5m, 5b are driven up and down in the hoistway 1 by hoisting machines 61 and 6b via ropes 7m, 7b.

A wind speed detection device 10 is installed on the roof of the 4-meter car of Car A, protruding from the side of the car.

FIG. 4 is a circuit of a same-direction movement detecting device for detecting the coincidence of the movement directions of all elevators in the same hoistway according to an embodiment of the present invention, where PG and NG are positive and negative common power supplies, respectively, and the anus 8U
0) are the normally open contacts of the ascending direction selection relays (not shown) that are turned ON when the ascending direction of the A and B machines is selected, respectively;
8D(4) and SDΦ) are human numbers.

Descending direction selection relay that turns ON when the descending direction of Unit B is selected (
(not shown) is a normally open contact. 8DRa This is a same direction detection relay that turns ON when all elevators in the same hoistway are selected to move in the same direction.

Fig. 5 shows the deceleration command circuit of the A car, and the B car is the same except for the dashed-dotted line. , P, and N are each positive.

U8L and D8L are negative power supply bus lines, and U8L and D8L are installed in the machine room to transmit the motion of the corner using Yusko's Daimei tape, and are equipped with a well-known floor selection machine that reduces and synchronizes the actual movement of the corner and simulates it. Nine current collecting brushes are installed on the forward moving table (not shown) which moves ahead of the synchronous moving table (not shown) by a distance required for deceleration, and U8L is a deceleration command when ascending. The pusher D8L is a brush for commanding deceleration when descending.

18L to 108L are fixed segments on a fixed base (not shown) facing these brushes, each having 1 segment.
It corresponds to the position of each floor from the 10th floor to the 10th floor.

Since 18L and 108L are terminal floors, they are connected to the positive bus line PKr to ensure that a deceleration command is issued. 219L~
98L are connected in parallel, and there are contact points between them and P, which will be described later.

8DR is a normally open contact of the same direction detection relay described above in FIG. 4, and VEL is a normally open contact of a wind speed detection relay shown in FIGS. 6 and 7, which will be described later. Auxiliary deceleration command relay X8L
is U8L when ascending, a D8L is 18L to 10 when descending
When touching one segment of 8L, there is a reason to stop on that floor (for example, there is a call or a hall call assigned to that corner to answer).
This is a normally open contact for -X8L (A not shown) when the auxiliary deceleration command is turned on. , U8L, D8L K are connected at one end, and 8U and 8D are shown in FIG. 4 and are the normally open contacts of the ascending direction selection relay and descending direction selection relay of that machine, respectively. BK is a brake contactor BK (not shown) that attracts an electromagnetic brake (not shown) attached to the hoisting member 6 when turned ON while driving, and releases the electromagnetic brake (not shown) when turned OFF when stopped to maintain the stopped position. It is a normally open auxiliary contact. 8LD is a normally open contact of an SLD relay to be described later, and is used to form a self-holding circuit. When the nine deceleration command relay coils 8LD shown in the circle are turned ON, the elevator is caused to decelerate and stop at the floor in contact with the deceleration command brush USL during ascending or the deceleration command brush D8L during descending, using a well-known method not shown. This is a deceleration command relay coil that sends commands to the control system.

FIG. 6 is a diagram showing an embodiment of the wind speed detection device shown in 10 of FIG. 3 of the company. 21 is a speed generator (alternating current or direct current type may be used), 22 is a propeller, 23 is a propeller shaft, 2
4 is a container for storing circuits such as relays and a mounting leg. FIG. 7 shows a circuit example of a wind speed detection device, in which the output of the speed generator 21 is rectified by a full-wave rectifier 25, and the voltage detection relay 2
6 (V]iL) and its normally open contact vBL
is shown in FIG. 5 and is used as nine VIL. In addition, VIL
The touching voltage can be finely adjusted with a built-in regulator.

(,) Function of the Invention During normal running, the car does not run close to the passenger, so there is a sufficient escape route for the air pushed away by the car, and the speed of the air flow in the direction of the car is 240 m15, which is the rated speed of the elevator.
Even if it is +, it is less than 8m/8. It is generally said that wind noise starts to become a problem when the speed of the rider is above 10FFI force.
BL) t7) If the operating point is set to about 8Fl$/8, the voltage detection relay 26 (Vii
! L) never works. Usually in Figure 5,
For example, when the deceleration command brush U8L touches the fixed segment 8SLK on the 8th floor as shown in the figure while the car is rising (the actual position of the car corner is delayed by the distance required for deceleration and the margin distance, (For example, near the 5th floor.) If the 8th floor is called or assigned and there is a call to go up the 98th floor hall, the auxiliary deceleration command relay x
8L is closed, P-X8L-88L-U8L-8U-8LD coil-N
Therefore, the deceleration command relay 8LD is ONL, and then the self-holding circuit is configured until the car actually stops at that floor (8th floor) and the brake is released.

P-BIC-8LD-8LD Coil-NKoreKyosho, a deceleration command is issued to the elevator and it decelerates to a stop. Also, if there is no call to respond at this time, the auxiliary deceleration command relay XSL remains open, and the deceleration command relay SLD is ON L, not present.

Now, suppose that two cars are running close together and ascending as shown in Figure 3, as the speed of one of the two cars increases or as the two cars approach each other. , the wind speed expansion of the air flow on the side of the car is 9, the wind speed is 8rrV
When the voltage exceeds 8, voltage detection relay 26 (VRL) turns on. However, at this time, the wind noise has not yet reached the level where it becomes a problem. On the other hand, in Figure 4, both A and B are ascending, so the same direction detection relay 8DR is turned on by PG-84-8U (B)-8DR coil-NG, and in Figure 5, P-8D
R-VBL-88L-U8L-8U-8LD: The deceleration command relay &LD of unit A is turned ON L by f ill-H.
, self-maintains as described above and issues a deceleration command to the nearest floor. Therefore, Unit A starts to decelerate, and the wind speed slows down before the wind speed rises above 5m7s, and no wind noise is generated.

The same applies even when both vehicles are descending.

Next, if two vehicles are traveling in opposite directions and pass each other in the middle, the instantaneous wind speed at which they pass each other may exceed astys, but it is well known from experience that wind noise does not pose a practical problem when passing each other. In this case, forced deceleration is not performed to avoid unnecessary stops. In other words, in Figure 4, one ascending direction selection relay SU is closed and the other descending direction selection relay SD is closed, so the same direction detection relay SDR remains OFF, and therefore forced deceleration occurs in Figure 5. Never.

There are various other methods for detecting the wind speed shown in FIGS. 6 and 7, such as one based on the Pitot tube principle,
Various methods can be considered in which the wind speed is converted into rotational speed using a propeller or the like, and then the centrifugal force is used to operate the switch at a speed higher than the set wind speed.

The wXs diagram is a plan view of a wind pressure detection device that measures wind pressure instead of wind speed and has the same function as the above-mentioned 9th wind speed detection device.
The figure is a 1IIIiii view of the wind pressure detection device shown in Fig. 8, where 31 is a fan-shaped plate made of a lightweight material such as aluminum and has one end bent rounded, and 32 is a spring material such as phosphor bronze. 33 is a mounting base for attaching a fan-shaped plate 31 to which the spring plate 32 is attached with screws 34;
36 is a rotary wheel of the switch section of the micro switch 37;
Reference numeral 8 denotes a mounting base on which the microswitch 37 is fixed with screws 39. The fan-shaped plate 31 is displaced in the vertical direction against the spring force of the spring plate 32 due to the airflow on the side surface of the car due to the vertical movement of the corner, and the amount of displacement is determined by the wind speed and the spring force. Micro switch 3 when wind speed s m7s or more
As a configuration in which the contacts in 7 are closed, the voltage detection relay 26 (VEL) of the wind speed detection device shown in FIG. 7 can be used instead.

FIG. 10 shows another embodiment of the nine deceleration command circuit shown in FIG. 5, and for the nine deceleration command circuit shown in FIG. 5, VP! Normally open contact of L and fixed segment for deceleration command) 2SL to 9S
A normally closed contact of a deceleration command relay 8LD of another car (a car other than the own car) is connected between the connection line to which L is commonly connected.

According to the nine deceleration command circuits shown in Figure 10, even if VgL operates when both A and B are climbing and running in close proximity, as in the example shown in Figure 3, the other When a deceleration command is issued, the deceleration command circuit of the own machine has the normally closed contact of the deceleration command relay (8LD) of the other machine open, so there is no circuit configuration, and unnecessary stoppage of the own machine is prevented. This eliminates the need to reduce the efficiency of group management control.

In Figures 5 and 10, the nine contacts 8DR and VEL for forced deceleration commands were installed with the wind speed detection device 10 inserted into the round machine, but they were inserted into the deceleration command circuit of another machine, and the wind speed detection device 10 was inserted into the deceleration command circuit of the own machine. It is mourning even if it is not inserted.

In Fig. 3, the wind speed detection device 10 is installed on the top of the car room for 4m cars, but as shown in Figs. Also, it does not necessarily have to be installed on the side facing other cars running alongside, as long as it can measure the airflow on the side of the car.

The number of cars running side by side in the same hoistway is not limited to two, and the same circuit configuration may be used in the case of two or more cars, and in this case, one or more wind speed detection devices 10 may be used. It's stormy though.

There are no limitations on the number of service floors, their configuration, elevator control system, etc.

(f) According to the elevator control device of the present invention as described in detail of the invention,
A simple control device reliably predicts and prevents the occurrence of wind noise when running side-by-side, so it is possible to prevent long-waiting calls and situations where the movement of the seats is unnecessarily restricted and the operational efficiency of group management is reduced. The occurrence of such problems and the feeling of anxiety and irritation caused to passengers in the car are kept to a minimum, and the circuit configuration is not complicated even when there are many cars running side by side in the same hoistway.

[Brief explanation of the drawing]

Figure 1 shows the configuration of an elevator for a single hoistway, Figure 2 is a sectional view taken along line 1-1 in Figure 1, Figure 3 is a diagram showing the configuration of the elevator of the present invention, and Figure 4 is a diagram of the present invention. FIG. 5 is a diagram showing an embodiment of the circuit of the same direction progress detection device of the invention, FIG. 5 is a diagram showing an embodiment of the deceleration command circuit of the invention, and FIG. 6 is an embodiment of the wind speed detection device of the invention. FIG. 7 is a circuit diagram of FIG. 6, FIG. 8 is a plan view of another embodiment of the wind speed detection relay of the present invention, FIG. 9 is a side view of FIG. 8, and FIG. Another embodiment of the deceleration command circuit of the present invention is shown, and FIGS. 11 and 12 are diagrams showing a method of attaching the wind speed detection device of the present invention. 1... Hoistway, 41... Car A car, 4b...
・Car B car, 10...Wind speed detection device, SDR・
...Driving direction matching relay, VIL...Wind speed detection relay, 8LD...Deceleration command relay. (7317) Agent Patent attorney Kensuke Chika (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 2 Figure 4 Figure 5 j”f Figure 10 Figure 11 Figure 12 Procedural amendment (voluntary) Commissioner of the Japan Patent Office 1, Indication of the case, Patent Application No. 57-33017 2, Name of the invention Elevator control device 3, Person making the amendment Relationship to the case Patent applicant (307) Tokyo Shibaura Electric Co., Ltd. 4, Agent Address: Tokyo Shibaura Electric Co., Ltd. Tokyo Office, 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo 100 (1) Claims column of the specification (2) Detailed description of the invention column 6 of the specification, Contents of amendments (1) The scope of the claims is corrected as shown in the attached sheet. (2) "Operation efficiency" in the third line of page 6 of the Meiji Kabo is corrected to "operation efficiency." 2. Claims (1) A plurality of cars are arranged in a common hoistway,
In the elevator control device that controls the movement of the elevator, at least one of the elevators has a wind speed detection device that operates when the wind speed or wind pressure in the hoistway is equal to or higher than a predetermined value; a same-direction progress detection device that operates when the whole fruit is traveling in the same direction, and when the wind speed detection device and the same direction progress detection device operate together, a predetermined car is moved to a floor where it can be stopped. An elevator control device comprising a deceleration command circuit for decelerating and stopping. (2) The elevator control device according to claim 1, wherein the floor that can be stopped is the closest floor that can be stopped by normal deceleration.

Claims (1)

[Claims] +l) A plurality of cars are arranged in a common hoistway,
In this elevator control device that controls movement of the elevator, at least one of the elevators includes a wind speed detection device that operates when the wind speed or wind pressure in the hoistway is equal to or higher than a predetermined value, and a panoramic view of the plurality of elevators. A same direction progress detection device is provided which operates when the car is traveling in the same direction, and when the wind speed detection device and the same direction progress detection device operate together, the car is decelerated to a floor where it can be stopped. An elevator control device characterized by being provided with a deceleration command circuit for stopping the elevator. (2) The elevator control device according to claim 1, wherein the floor that can be stopped is the closest floor that can be stopped by normal deceleration.