JPS583952B2 - Elevator manual operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in a device for manually operating an elevator car.

When an elevator operated according to a speed command is used for maintenance operations or the like, it is common to generate a low speed command and thereby operate the car at a low speed of about 20 m/min.

Now, in recent years, the number of skyscrapers has increased, and the elevators installed in these buildings serve different floors.

For example, it can be divided into going to low floors, going to middle floors, going to high floors, etc.

Of these, elevators bound for middle floors do not have landings in the lower floors, and elevators bound for higher floors do not have landings in the lower and middle floors.

These sections are usually called express sections.

Since elevator operation equipment is generally not installed in this express section, there are naturally no parts that require maintenance or inspection.

Nevertheless, if it is attempted to pass at the above-mentioned low speed during maintenance, it will take several tens of minutes, resulting in a significant waste of maintenance time.

This invention is intended to improve the above-mentioned defects, and aims to provide a manual operation device for an elevator that can run at high speed through sections of floors that do not require maintenance or inspection, thereby shortening maintenance time. .

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In Figure 1, (+) and (-) are DC power supplies, 1 and 2 are resistors,
3 is a capacitor, 4 is a control device that controls the speed of the elevator motor, 5 is a manual low-speed rise button provided on the car, 6 is a manual low-speed rise relay, and 6a is its normally open contact;
7 is a manual high-speed rise button provided on the car; 8 is an express section detection contact that closes only while the car is within the express section; 9
1 is a manual high-speed ascending relay, 9a and 9b are respective normally open contacts, 10 is a time-limited time relay, and 10a is its normally open contact.

When the manual low-speed rise button 5 is closed during maintenance operation of the elevator, the manual low-speed rise relay 6 is energized and the contact 6a is closed.

A current flows through the (+)-6a-1-2-(-) circuit, and the voltage across the resistor 2, that is, the speed command value, has a rounded rise due to the action of the capacitor 3, and the voltage V shown in FIG.
Becomes 1.

The car now moves up at a low speed corresponding to the speed command value ■1.

When the car enters the express section, the detection contacts 8 are closed.

At this time (point A in FIG. 2), when the manual high-speed rise button 7 is closed, the manual high-speed rise relay 9 is energized, the contact 9a is closed, and a part of the resistor 1 is short-circuited.

Therefore, the speed command value V1 increases to 2, and the car accelerates to a high speed for manual operation.

At the same time, contact 9b is also closed, time relay 10 is energized, and contact 10a is closed.

The car now runs at high speed in the express section.

When the car passes through the express section (point B in Figure 2), the detection contact 8 is opened, the ascending relay 9 is deenergized, and the contact 9a is opened.

At this time, if the up button 5 continues to be closed, the speed command value V2 becomes 1 again, and the car becomes slow again.

Note that even when the car is traveling in the express section, if the lift button 7 is released, the lift relay 9 is deenergized, and the car speed is reduced as described above.

Further, since the contact 9b is also opened, the time relay 10 is deenergized and the contact 10a is opened after a certain period of time.

If you release your hand from the rise button 5 after opening the contact 10a (second
(Point C in Figure 2), the ascending relay 6 is deenergized, the contact 6a is opened, the speed command value 1 becomes zero (Point D in Figure 2), and the car stops.

Note that if the hand is released from the lift button 5 before the contact 10a is opened, the lift relay 6 is deenergized when the contact 10a is opened.

In the above embodiment, the speed can be increased only when the car is in the express section, but this is not necessarily limited to the express section.

Moreover, although the car speed is shown to be switched between two stages, low speed and high speed, the speed may be changed continuously using a variable resistor.

Incidentally, although only the ascending operation was shown in the embodiment, it is unnecessary to explain that the descending operation can also be easily carried out.

As explained above, in this invention, either low speed or high speed can be arbitrarily selected within the car using the manual low speed button and manual high speed button provided on the car, so that during manual operation such as maintenance and inspection, It is possible to travel at high speed in sections that do not require low speed travel, and maintenance time can be shortened.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a main part showing an embodiment of an elevator manual operation device according to the present invention, and FIG. 2 is a characteristic curve diagram of a speed command value according to FIG. 1. , 1, 2...Resistance, 4...Control device,
5...Manual low speed rise button, 6...Manual low speed rise relay, 7...Manual high speed rise button, 8...Express section detection contact, 9. ...Manual high-speed ascending relay, 10...Timed action type timed relay.

Claims (1)

[Claims] 1. In an elevator in which the car is operated manually based on a speed command, when the manual low speed button provided on the car, the manual high speed button provided on the car, or the manual low speed button is operated, the speed command is set to the manual low speed command. and a manual high-speed operation circuit that switches the speed command from the manual low-speed command to the manual high-speed command when the manual high-speed button is operated when the heel is in a predetermined range. manual operation device.