JPS61235376A - Cage floor compensator for hydraulic 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 [Field of Industrial Application] The present invention relates to a device for correcting a sinking of a car floor of a hydraulic elevator to a predetermined level.

[Conventional technology]

In a hydraulic elevator, a car is raised and lowered by a hydraulic jack, but even if the car is accurately placed on the floor, when a heavy object gets on it, the car floor sinks due to the compression of oil. Also,
If the car is left on the floor for a long time, the car floor will sink due to changes in the temperature of the oil. Therefore, as shown in Japanese Patent Publication No. 49-32825, for example, when the car floor sinks too much, pressure oil corresponding to the sinking amount of the car is supplied into the cylinder of the hydraulic jack to raise the car floor to a predetermined level. Corrections are being made. Also, repeating this correction operation will cause undesirable results such as hastening the wear of the contacts of the electromagnetic contactor that opens and closes the circuit of the electric motor for driving the hydraulic pump. Corrections are made only when the sinking amount is greater than the amount of sinking mentioned above.

2 to 4 are diagrams showing a conventional hydraulic elevator car floor correction device, and FIG. 2 is a vertical sectional view of a hoistway.

FIG. 3 is an explanatory diagram of the operating position of the level detection switch.

Figure 4 is an electrical circuit diagram.◎ In Figures 2 and 3, (1) is the hoistway, (2) is the cylinder (2 people) buried in the bottom of the hoistway 111, and the cylinder (2A). Plunger (2B) that moves up and down using the pressure oil inside.
(3) is a cage connected to the head of the plunger (2B), (4) is a foot door, (5) is a landing door, and (6) is a switch provided on the foot (3). (7) is a second level detector similar to the first level detector (6); (8) is a second level detector fixed to the wall of the hoistway (first and second level detector +61 .TV) with a cam that operates the TV.

(6X) is the operating range of the first level detector (6), (7
X) is the operating range of the second level detector ()) @4th
In the figure, (+), (→ is the DC power supply, (6a) is the first
The normally open contact of the level detector (6), (7a) is the normally open contact of the second level detector (7), O (1 is the upward floor matching relay, (10a).

(10b) is the normally open contact, +1 is the lunar eclipse closed detection relay contact that opens when the car door (4) is fully closed, α2 is the automatic operation relay contact that closes during automatic operation,
) is in the door-openable section of the floor, the door-openable section detection relay contact closes, and I is the cylinder (2A) when energized.
This is a floor-alignment lift relay that supplies pressure oil to raise the heel (3).

The conventional hydraulic elevator car floor correction device is configured as described above, and when the car door (4) is open (the landing door (5)
) is also opened in conjunction with this, but the landing door (5) will be omitted below), and the relay contact αυ that detects the closing of the February eclipse is closed. I'm currently driving automatically.

When the car (3) lands on the floor, both the automatic operation relay contact aX5 and the door-openable section detection relay contact 0 are closed.

In this state, when the floor of the heel (3) sinks by a distance A from the floor level L in Fig. 3, the first level detector (6) detects the cam (
8), the contact (6a) is closed, and the (+)-αG (6a)-011-(→ circuit energizes the upward floor alignment relay al), and the contact (10a) , (10b)
is closed. with this.

Since the floor alignment lift relay α-yu is energized, the car (3) rises. The car (3) rises and the first level detector (6
) and the cam (8) are released, the contact (6a) is opened, so the upward floor alignment relay a1 is deenergized, the contact (10b) is opened, and the floor alignment raising relay α4 is deenergized. Now, the car (3) stops and the floor correction operation ends.

Also, when the car door (4) is fully closed, the relay contact qυ that detects the February eclipse is open (3).
Even if the contact point (6a) of the first level detector (6) is closed due to the sinking of the car, the upward floor alignment relay atg is not energized, so the car floor is not corrected.

When the heel (3) further sinks and descends from the floor level L by a distance B, the second level detector (7) engages the cam (8), opening and closing the contact (7a) ii. Now (→-(7
a) -(6a) -0(1-(→) circuit, the upward floor alignment relay Q0 is energized and self-maintained by closing the contact (10a).

Next (・, the floor alignment rising relay α◆ is also energized, and the car door (
The heel (3) rises in the same way as when 4) is open.

Even if the car (3) rises and the second level detector contact (7a) opens, the upward floor alignment relay aQ is not deenergized.

Further, the heel (3) rises and the second level detector contact (6a
) is opened, the upward floor alignment relay Ql is deenergized.

The floor correction operation ends.

[Problem that the invention seeks to solve]

In the conventional hydraulic elevator car floor correction device as described above, when the car door (4) is not fully closed.

The level difference between the landing floor and the car floor is kept small.
However, if the car door (4) is fully closed, the car floor will not be corrected unless the level difference becomes large. Therefore, if the car (3) is left on the floor for a long time, the car floor will sink significantly and it will be dangerous for passengers to board the heel (3). In addition, there are other problems such as the need to wait until the car door (4) opens and the car floor is corrected. This invention was made to solve the above problems, and the level of the second landing floor and the car floor. To provide a car floor correction device for a hydraulic elevator which can ensure safety when two passengers board by reducing the difference.

[Means for solving problems]

The car floor correction device for a hydraulic elevator according to the present invention is provided with a stop switch that is operated to stop the car, and when the stop switch is not operated, the car floor correction is performed by the operation of the first level detector. When the pause switch is operated, the car floor correction operation is performed by operating a second level detector located below the first level detector.

[Effect]

In this invention, when the pause switch is not operated, the floor correction operation is performed when the car sinks to the position where the first level detector operates, regardless of whether the car door is opened or closed.

〔Example〕

FIG. 1 is an electric circuit diagram showing one embodiment of the present invention, and FIG.
The figures and FIG. 3 are used as is. In addition, tl),
+21. (2A), (2B), +31~(8)
, αa, (10a), (10b).

αri~a4. (→, (→ is the same as the above conventional device O In the figure, α!9 is a car (3-2 installed at the
The pause switch αe is closed when the motor is paused, αe is a pause relay, and (16a) is its normally closed contact.

In the hydraulic elevator car floor correction device configured as described above, during normal operation, the pause switch QS is open and the pause relay aS is deenergized.

The contact (1da) is closed.

In this state, when the heel (3) sinks to the position where the first level detector (6) operates, (→-(16a) -(6a
) -(ILI-(→) circuit energizes the upper floor alignment relay α port, and as mentioned above, the heel (3) rises to perform floor correction. When the pause switch αS is closed, The pause relay αe is energized and the contact (16a) is opened.This way, even if the car (3) sinks and the second level detector (6) operates.

The upward floor alignment relay QQ is not energized and the car floor is not corrected. Furthermore, the heel (3) descends and detects the second level detector (
When 7) operates, (+) −(7a) −(6a)
-01-(The circuit at → energizes the upward floor alignment relay α1, and then the floor alignment lift relay 64 is also energized.)
3) will rise. And the second level detector contact (6a
) opens, the handle (3) stops.

In this way, when the pause switch a9 is not operated, the level difference between the landing floor and the car floor is reduced to ensure passenger safety. When the pause switch 05 is operated, repeated floor corrections are prevented due to slight level differences.

In the embodiment, first and second level detectors +61 . (7
1 is installed on the heel (3), but it is also possible to install these on the wall of the hoistway +11 and install the cam (8) on the heel (3). In this invention, when the pause switch that pauses the car of the hydraulic elevator is not operated, the car floor correction operation is performed when the car operates the first level detector, and when the pause switch is operated, the car floor correction operation is performed. ,
When the second level detector below the first level detector is operated, the car floor correction operation is performed.
This has the effect of ensuring the safety of passengers when boarding, and of preventing the car floor correction operation from being performed again when two cars are at rest.

[Brief explanation of drawings]

FIG. 1 is an electric circuit diagram showing one embodiment of a car floor correction device for a hydraulic elevator according to the present invention, FIG. FIG. 3 is an explanatory diagram of the operating positions of the first and second level detectors in FIG. 2. FIG. 4 is an electrical circuit diagram showing a conventional hydraulic elevator car floor correction device. In the figure, (2) is the hydraulic jack, (3) is the cage, (6) is the second level detector, (6a) is the same contact on the left, (7) is the second level detector, (7a) #: is the same as on the left. The contact point, H is a correction circuit (upward floor alignment relay), Q4 is a correction circuit (floor alignment upward relay), and +Is is a pause switch. Note that the same reference numerals in Figure 1 indicate the same parts.

Claims (1)

[Claims] A first level detector that operates when the floor of a car raised or lowered by a hydraulic jack comes a predetermined distance below the landing floor; and a first level detector that operates when the car floor comes a certain distance below the operating position of the first level detector. a second level detector to stop the car, a pause switch that is operated to pause the car, and when the pause switch is not operated, the first level detector is activated to raise the car and set the car floor to a predetermined position. a car floor of a hydraulic elevator, the car floor of a hydraulic elevator comprising a correction circuit that corrects the car floor to the predetermined level by raising the car when the second level detector operates when the pause switch is operated. correction device.