JPH05270752A - Elevator operating device - Google Patents

Abstract

PURPOSE:To prevent enlargement of the landing error even though the rise/fall distance of elevator has varied due to settlement of the ground. CONSTITUTION:When, for example, an elevator car 4 rises in response to a call from the second floor 2 and a cam 5 is engaged by a car position switch 2A at the second floor, a stop command is generated, and the car 4 lands on the second floor 2. If a ground settlement is generated to cause elongation of the inter-floor spacing H between the first and second floors 1, 2, a guide rail sinks and car position switches 1A-3A fixed thereto also sink. When ground settlement is sensed, the cam 5 is engaged by the switch 2A to generate a stop command after elapse of a certain period of time. This retards the generation of the stop command to allow the car 4 to land on the second floor 2 normally.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for operating an elevator installed in a building where ground subsidence occurs.

[0002]

2. Description of the Related Art Conventionally, since an elevator is installed in a hoistway in a building, even if the building is constructed in a landfill and ground subsidence occurs, the hoistway will sink together with the building. , The up and down stroke does not change. However, in recent years, when the amount of ground subsidence is not constant due to the geology of the landfill, the building is divided into the upper part and the lower part of the entrance floor, and the upper part is fixed according to the surrounding terrain and the subsidence of the lower part. There is a method to jack up the lower part when the amount becomes large. In this case, before jacking up,
The lift stroke of the elevator will change temporarily. This will be described with reference to FIG.

FIG. 1 is an explanatory view of a hoistway showing a conventional elevator operating device. (1) to (3) are first to third floors, and (1A) to
(3A) is a car position switch installed corresponding to the first floor (1) to the third floor (3) respectively, (4) is an elevator car, (5) is a car position switch installed in the car (4) ( It is a cam that engages with 1A) to (3A).

It is assumed that the conventional elevator operating device is constructed as described above and the car (4) is stopped on the first floor (1). When the call (landing call or car call) for the second floor (2) is registered, the car (4) rises accordingly. When the car (4) approaches the second floor (2) and the cam (5) engages with the car position switch (2A), a stop command is issued and the car (4) lands on the second floor (2). ..

If this building is divided between the first floor (1) and the second floor (2), if ground subsidence occurs, the first floor (1)
The submarine part sinks, and the floor space H between the first floor (1) and the second floor (2) increases.

[0006]

In the conventional elevator driving apparatus as described above, a stop command is issued when the car position switches (1A) to (3A) installed in the hoistway operate. When the floor space H is extended due to ground subsidence, the operating positions of the car position switches (1A) to (3A) are also moved downward, which causes a problem that the car (4) comes to a landing error when stopped.

The present invention has been made in order to solve the above problems, and provides an elevator operating device having a small landing error and high safety even if secular change such as ground subsidence occurs. To aim.

[0008]

In the elevator operating apparatus according to the first aspect of the present invention, when the stroke change detecting circuit detects that the change in the ascending / descending stroke exceeds a predetermined value, it is output by the car position switch. The stop control command generation timing is changed by a time control circuit.

Further, in the elevator operating apparatus according to the second aspect of the invention, when the stroke limit detecting circuit detects that the change in the ascending / descending stroke reaches the limit value, the car is stopped at the nearest floor by the pause circuit and then stopped. It was made to let.

[0010]

According to the first aspect of the present invention, when it is detected that the change in the ascending / descending stroke exceeds the predetermined value, the timing at which the stop command is issued is changed. Therefore, the distance required until the car stops Also changes.

Further, in the second aspect of the invention, when it is detected that the change in the ascending / descending stroke exceeds the limit value, the car is stopped at the nearest floor and then stopped so that the car is prevented from starting. To be done.

[0012]

【Example】

Example 1. 1 to 3 are views showing an embodiment of the first invention of the present invention, FIG. 1 is a hoistway explanatory diagram (described above), and FIGS. 2 and 3 are circuit diagrams.

2 and 3, (+) and (-) are DC power supplies, (1B) is a virtual car position relay on the first floor, (1Ba) and (1Bb) are normally closed contacts, and (2B) and (3B). ) Is also a virtual car position relay on the 2nd and 3rd floors, (2Ba) (2Bb), (3Ba) (3Bb) are their normally closed contacts, and (1C) to (3C) are the car positions on the 1st to 3rd floors. In the relay, (1C
a) to (3Ca) are normally open contacts, (6) is an ascending travel relay contact that closes when the car (4) rises, and opens when stopped and descends,
(7) Closes when the car (4) descends and opens when stopped and when the car descends. (8) Closes when the car (4) starts running, and after a certain period of time (passenger Door open timed relay contacts that open after a sufficient amount of time to get on and off.

(9) is a travel command relay contact that opens when the car (4) can travel and closes when it stops, and (10) is a stop command relay that issues a stop command when energized. Is a normally open contact, (11) is a call registration relay contact on the first floor that closes when a hall call or car call on the first floor (1) is registered and opens when the car arrives on the first floor (1), (12) (13) is the second and third floor call registration relay contact, (14) is the up direction command relay, (14a) (14b) is its normally closed contact, and (15) is the down direction command relay. , (15a) and (15b) are the normally closed contacts.

(16) is a ground subsidence detection contact that is installed in a building to detect the subsidence amount and closes when it exceeds a predetermined value, (17) is a car position confirmation relay, and (17a) is its normal position. The closed contact, (18) is a stop decision delay relay that operates immediately when energized and returns after a certain time when deenergized.
c) is its normally closed contact.

Next, the operation of this embodiment will be described. now,
The car (4) is on the first floor (1), and if passengers boarding the car (4) on the first floor (1) register a car call on the third floor, the call registration relay contact (13) is closed. To achieve. At this time, the virtual car position relay (3B) on the 3rd floor is deenergized and the contact (3Bb) is closed, so (+)-(13)-(3Bb)-(15a)-(14 )-(-) Circuit energizes the up-direction command relay (14) and contacts (14a)
(14b) is opened. Then, the traveling command is output (the circuit is omitted), and the traveling relay contact (9) is opened. Also a basket
Since (4) has passed a certain time after the stop, the door open time limit relay contact (8) is open and the stop command relay (10) is deenergized.

When the car (4) starts traveling by the output of the traveling command, the ascending traveling relay contact (6) is closed. When the car (4) passes through the second floor (2) and the cam (5) engages with the car position switch (3A) on the third floor, (+)-(3A)-(18C)-(3B)-( In the circuit of-), the virtual car position relay (3B) on the third floor is energized and the contact (3Bb) is opened, so the up-direction command relay (14) is deenergized and the contacts (14a) (14b) are Close. The car position relay (3C) on the third floor is also activated, but this does not affect the operation of the car (4).

By closing the contact (14b), (+)-(6)-(14b)-
In the circuit of (10)-(-), the stop command relay (10) is energized, the stop decision is made (the circuit is omitted), and the car (4) stops at the third floor (3). This opens the call registration relay contact (13) on the third floor. The above is normal operation, and the car position switch (3A) ~
(3C) is set according to the lifting stroke, so the car
(4) Land at the regular position on each floor.

However, if the ground subsides, 1
Since only the first floor (1) is submerged and the second floor (2) and the third floor (3) are fixed, it is effectively the up and down stroke, that is, the first floor (1).
And the floor space H on the second floor (2) becomes longer. Also, the car position switches (1A) to (3A) are fixed to the arm fastened to the guide rail (not shown), and the lower end of the guide rail is fixed to the bottom of the hoistway. (3A) sinks together with the guide rail. The guide rail is supported on the hoistway by a sliding clip (not shown) so that it can be moved to some extent. Therefore, when the car (4) is in ascending operation, for example, the operating point of the car position switch (2A) on the second floor (the stop command generation point to the second floor (2)) comes before the normal operating point. When stopped in this state, the car (4) stops before the second floor (2), causing a landing error.

Next, the case where the ground subsides will be described. Now, if the ground subsidence amount exceeds a predetermined value, the ground subsidence amount detection contact (16) is closed. At this time, the basket (4) is 1
If the passenger on the floor (1) has entered the car call on the third floor, the car (4) moves up as described above. At this time, if the car (4) is passing through the second floor (2), the car position relay (2C) is energized and the contact (2Ca) is closed by closing the second car position switch (2A). The car position confirmation relay (17) is energized and the contact (17a) is open.

When the car (4) passes the second floor (2) and the cam (5) leaves the car position switch (2A), the car position switch (2A)
Open, the car position relay (2C) is de-energized, the contact (2Ca)
The car position confirmation relay (17) is de-energized,
The contact (17A) is closed. Now, (+)-(16)-(17a)-(18)-
In the circuit (-), the stop determination delay relay (18) is energized and the contacts (18a) to (18c) are opened.

Next, when the cam (5) of the car (4) is engaged with the car position switch (3A) on the third floor, the car position relay (3C) is energized and the contact (3Ca) is closed. , Car position confirmation relay
(17) is energized again and the contact (17a) opens. with this,
The stop decision delay relay (18) is de-energized and after a certain period of time the contact (1
8a) to (18c) are closed. Closing the contact (18c) energizes the virtual car position relay (3B) on the 3rd floor and opens the contact (3Bb), deactivating the up-direction command relay (14) and
(14b) will be closed. Now, in the (+)-(6)-(14b)-(10)-(-) circuit, the stop command relay (10) is energized and the car (4) is 3
Stop on the floor.

In this way, even if the ascending / descending stroke becomes long due to the subsidence of the ground, the car (4) is properly operated by delaying the generation timing of the stop command after the operation of the car position switches (1A) to (3A). It is possible to land on.

Embodiment 2. FIG. 4 is a circuit diagram of a main portion showing an embodiment of the second invention of the present invention. The same parts as those in FIGS. 2 and 3 are designated by the same reference numerals. The part A in FIG. 3 is also used in this embodiment.

In the figure, (19) is a ground subsidence dangerous amount detection contact point which is installed in a building and detects the ground subsidence amount, which is closed when it exceeds a limit value that interferes with elevator operation,
(20) is a ground subsidence risk detection relay, (20a) and (20b) are its normally open contacts, and (21) is an annunciator consisting of an indicator lamp, a buzzer and the like.

Now, when the subsidence amount of the building becomes large and the ground subsidence danger amount detection contact (19) is closed, the ground subsidence danger amount detection relay (20) is energized and the contacts (20a) (20b) are closed. Close.
Since the stop command relay (10) is energized by closing the contact (20a), if the car (4) is running, it will stop at the nearest floor. Also, if the car (4) is stopped, its running is blocked. Further, by closing the contact point (20b), the alarm device (21) operates to notify the passenger in the car, the hall, and the manager's room that the ground subsidence amount is large and the elevator cannot be used. In this way it is possible to increase safety.

[0027]

As described above, in the first invention of the present invention, when it is detected that the change in the ascending / descending stroke exceeds the predetermined value, the generation timing of the stop command is changed. The distance required for stopping can also be changed to land on the regular position, and the landing error can be reduced.

In the second aspect of the invention, when it is detected that the change in the ascending / descending stroke exceeds the limit value, the car is stopped at the nearest floor and then stopped, so that the car is prevented from starting. , There is an effect that can increase the safety.

[Brief description of drawings]

FIG. 1 is a hoistway explanatory diagram showing a first and a second embodiment of the present invention and a conventional elevator driving apparatus.

FIG. 2 is a circuit diagram showing a first embodiment of the present invention.

FIG. 3 is a circuit diagram showing a first embodiment of the present invention.

FIG. 4 is a main part circuit diagram showing a second embodiment of the present invention.

[Explanation of symbols]

1A to 3A 1st to 3rd floor car position switch 4 car 5 cam 10 stop command relay 16 stroke change detection circuit (ground subsidence detection contact) 18a to 18c time control circuit (stop decision delay relay contact) 19 stroke limit detection circuit (Ground subsidence danger amount detection contact) 20a Pause circuit (Ground subsidence risk detection relay contact)

Claims (2)

[Claims] 1. A hoistway having a hoisting stroke that changes with age, and when a car arranged in this hoistway operates a car position switch installed in the hoistway, a stop command is issued and the car is lifted. In an elevator for landing on a floor, a stroke change detection circuit that operates when the change in the ascending / descending stroke exceeds a predetermined value, and a time control circuit that changes the generation timing of the stop command when the stroke change detection circuit operates. Elevator driving device characterized by being equipped. 2. A hoistway having a hoisting stroke that changes with age, and when a car arranged in this hoistway operates a car position switch installed in the hoistway, a stop command is issued to cause the car to go out. In an elevator for landing on a floor, a stroke limit detection circuit that operates when the change in the lifting stroke exceeds a limit value, and a pause circuit that suspends the car after stopping it on the nearest floor when this stroke limit detection circuit operates An elevator driving device characterized by being equipped with.