JPH026044Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an elevator control system, and is particularly concerned with the problem of level deviation between the car and the landing floor caused by changes in load caused by loading and unloading of luggage or passengers getting on and off. The present invention relates to a control device suitable for correcting.

[Background of the idea]

An elevator with a long journey stops correctly at the lowest floor level with a full load of luggage,
If all the luggage is removed from the basket after the door is opened,
As the tension in the main rope or vibration absorber decreases, the car moves upwards relative to the floor level, resulting in an imbalance. This level deviation occurs continuously in response to changes in load when the luggage is carried out from the elevator car, and this level deviation may reach about 3 to 4 cm.

Therefore, if the luggage is carried into the elevator car in this state, especially when the above-mentioned work is performed using a trolley, there is a risk that the trolley will trip over the elevator car threshold and cause the luggage to fall. In such a case, it is necessary to bring the car closer to the landing floor as soon as possible before the car floor becomes significantly out of level. As one of these methods, a device described in Japanese Utility Model Application Laid-Open No. 55-196351 is known. but,
This device requires a separate device for level correction, making the device itself large-scale, which increases equipment costs and has the drawbacks of complicating the equipment itself.

[Purpose of invention]

The purpose of the present invention is to provide an elevator control device that can easily and inexpensively correct level deviations by using existing control functions without requiring a special device for correcting level deviations. be.

[Summary of the idea]

The feature of the present invention is that a level correction command means is provided,
In response to this command, service to normal calls is blocked and the car is operated back and forth from the floor where it is stopped to a predetermined floor, thereby correcting the level deviation.

For example, this level correction command may be generated when an operation button is provided inside the car or at the landing, and the operation button is manually operated. Additionally, level differences can be detected and generated automatically.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In the diagram, A is a relay for level correction operation command, A ₁
~A ₃ is the contact, B is the normal operation prevention relay, B ₁
~ _B7 is its contact, 1C to 3C are elevator car call registration relays for the first to third floors, respectively, energized by relay A for level correction operation command,
1C ₁ to 3C ₄ are the contacts, E is the deceleration command relay,
E ₁ is the contact point, G is the relay for ascending operation command, H
is a relay for commanding descending operation, L is a relay for commanding opening of the elevator car door, O is a door opening position detection device for the elevator car door, J is a driving direction selection circuit for the elevator car, 1F ₁ ~ 3F ₁ ~ 1F ₇ ~ 3F ₇
are the contacts of the elevator car position detection relays on the 1st, 2nd, and 3rd floors, _K1 to _K3 are the contacts of the elevator start relay, PA is the contact of the level error detection device 4, C is the capacitor, R is the resistor, 1U,
2U is the 1st floor and 2nd floor landing call registration relay, 1U ₁ and 2U ₁ are the respective contacts, 2D, 3
D is the bottom call registration relay of the landing on the 2nd floor and the 3rd floor respectively, 2D ₁ and 3D ₁ are the respective contacts, 1UB, 2
UB, 2DB, and 3DB are hall call buttons, P and N are operating power supplies, and the above are connected as shown.

Next, the operation of this embodiment will be explained.

First, the luggage 6 is loaded into the elevator car 1 and moved from the first floor to the second floor. After the elevator car 1 stops at the correct level as shown in Fig. 3, the luggage 6 loaded in the elevator car 1 is loaded.
Consider the case where all of the In this case, the main rope 2 of the elevator car, which had been stretched due to the cargo, or the vibration absorber 3, which had been compressed, returns to its unloaded state. , is higher than the landing floor 7 as shown in FIG. For this reason,
The level error detection device 4 is removed from the shielding plate 5,
Close the contact PA. In other words, since elevator car 1 is currently stopped, P-PA-K ₁
-A-N circuit is closed and level correction operation command relay A is energized. Therefore, P−A ₁ −
2F ₁ -2C-N circuit allows elevator car 1
After the elevator is operated to the second floor, which is the currently stopped floor, the call registration relay 2C is energized. Since the contact _2C3 is closed by the energization of the call registration relay 2C, the normal operation prevention relay B is energized by the circuit P- _2C3 -B-N.

If a well-known elevator hall call registration device is operated during normal operation, the well-known car operation direction selection circuit By J, relay G for ascending operation command or relay H for descending operation command, which operates the elevator car, is attached by circuit P-B ₂ -J-G-N or P-B ₂ -J-H-N. You will be forced to do so.

However, now the normal operation prevention relay B
is energized and its contact B ₂ is open, so
Even if a call registration operation is performed and the elevator car operation direction selection circuit J is formed, the relay G for ascending operation command or the relay H for descending operation command is not energized. Further, even if once energized, the circuit is opened and the relay G or H is deenergized, thereby preventing the elevator car from operating normally by operating the known call registration device. On the other hand, since level correction operation command relay A is energized, its contact _A2 is closed, and now,
Elevator car 1 is stopped on the second floor and the elevator car position detection relay on the second floor is energized, so its contact 2F ₆ is opened and P-A ₂ -1F ₆
Relay H for descending operation command by -H-N circuit
is energized. This allows the elevator to perform a downward operation in a well-known manner. When the elevator is operated, the starting relay (not shown) is energized and its contact _K1 is opened, so the level correction operation command relay A is deenergized.
The deceleration command relay E is energized by the circuit P-K ₂ -G ₁ -H ₁ -E-N in Figure 2, and the elevator car operates a well-known deceleration circuit and moves to the nearest floor. Can be stopped. At this time, contact _A1 of the level correction operation command relay is opened, and the circuit that energizes the car call registration relay 2C is opened, but due to the action of the capacitor C and resistor R, the elevator car position detection relay (not shown) (omitted) switches from the second floor to the first floor, P-2C ₁ -2F ₂ -2C-
The car call registration relay 2C is configured to be held in the C-2C-R closed circuit until the N self-holding circuit is formed.

As is well known, when an elevator stops at a normal level, the door opening position detection device O operates.
Relay L for door opening command is P-B ₃ -1F ₇ -O-L-N
is energized by the circuit, and this opens the door of the elevator car 1. However, as mentioned above, since the normal operation prevention relay B is energized, its contact _B3 is open, and even if the elevator car 1 has landed at the normal level, the door opening command relay L is not engaged. The elevator car door will not open because it is not powered.

When the elevator car 1 stops at the nearest floor, that is, the first floor in this case, the elevator starting relay (not shown) is deenergized, so its contact _K3 is closed, and As described above, since the elevator car 1 is stopped at a normal level, its state is as shown in FIG. Therefore, the level error detection device 4
The contact PA is open, and the registered relay 2C that calls the elevator car 1 to the second floor is energized as described above, and its contact _2C4 is opened.
The elevator car position detection relays on the 2nd and 3rd floors (not shown) are also not energized, so their contacts 2F ₆ and 3F ₆ are closed, and P-2C ₄ -A ₃ -K ₃
-2F ₆ -3F ₆ -G-N circuit energizes elevator ascending operation command relay G. Now, the elevator car 1 is operated upward by a well-known operation circuit, and when the elevator car 1 energizes the second floor elevator car position detection relay (not shown), P-K ₂ -2F ₃ -2C ₂ - The deceleration command relay E is energized by the circuit E-N, thereby operating a known deceleration circuit. As a result, the elevator car 1 can be decelerated to the second floor and stopped at the normal landing level as described above.

When elevator car 1 stops at the second floor,
The contact _2F2 of the elevator car position detection relay is opened and the call registration relay 2C is deenergized.
This opens the contact _2C3 , deenergizes the normal operation prevention relay B, and closes the contact _B3 , so P-
The door opening command relay L is energized by the circuit _B3-2F7 - _O -L-N, and the door of the elevator car 1 can be opened. Further, by closing the contact _B2 , the elevator can be operated normally by the elevator car operation direction selection circuit J. In addition, as is well known, the elevator hall call registration relays 1U, 2U, 2D, and 3D are the contact 1 of the elevator car position detection relay.
F ₅ , 2F ₅ , 2F ₄ , and 3F ₄ are deenergized, but the contact of the normal operation prevention relay B causes the elevator car 1 to stop at the nearest floor, and the contact of the elevator car position detection relay Even if it opens,
If a hall call is registered, the relay will not be de-energized.

In the above embodiments, the case where the 1st to 3rd floors are serviced by a rope elevator has been given as an example, but the present invention is not limited to this, and the present invention is not limited to this. It is clear that the present invention can be similarly applied to an elevator, and that it is not limited to a relay circuit, but can also be configured with a microcomputer or the like.

[Effects of the invention] According to the invention, there is no need to install a special device to correct level deviations, and level correction can be performed easily and inexpensively by simply slightly modifying the existing operation circuit that controls the elevator. be able to.

[Brief explanation of the drawing]

Figures 1 and 2 are circuit diagrams of an embodiment of the elevator control device according to the present invention, Figure 3 is a schematic diagram of the elevator when it has reached its normal position with the rated load loaded, and Figure 4 is a diagram of the elevator control system according to the present invention. It is a schematic diagram when a level difference is caused by unloading baggage. A... Relay for level correction operation command, B... Normal operation prevention relay, 1C to 3C... Car call registration relay, 4... Level error detection device, PA
... Contact of level error detection device, 5 ... Floor side shielding plate.

Claims (1)

[Scope of claim for utility model registration] 1. In an elevator equipped with a call registration means, an elevator car that services multiple floors in response to the call, and a door opening device that opens the door when the elevator car is in service. , level correction command means for commanding correction of a level difference between the car's stop floor and the car; means for blocking service for the call in response to the level correction command; 1. An elevator control device comprising means for reciprocating the car between a stop floor and a predetermined floor. 2. The elevator control device according to claim 1, wherein the reciprocating operation means includes means for preventing the operation of the door opening device when the car stops at the predetermined floor. . 3. A practical application characterized in that the level correction command means includes means for detecting a level difference between the floor at which the car stops and the car, and generates a level correction command in accordance with the level difference detection means. An elevator control device according to claim 1 of the patent registration claim. 4. Practical use characterized in that the level correction command means is provided with an operation button in the car or in the landing, and generates the level correction command in response to the operation button provided in the car or in the landing. An elevator control device according to claim 1 of the patent registration claim.