JPH03195680A - Maintenance operation device of elevator - Google Patents

Abstract

PURPOSE:To obtain a maintenance operation device which has high safety during the maintenance operation and is simply operated by invalidating the operation of an up button or a down button when a storage means is set and validating the operation when the above means is reset after the up button or the down button is operated. CONSTITUTION:After a relay 43C is energized, a stop switch BS 2 is locked and a relay 50 is de-energized, the stop switch BS 2 is returned. When the relay 50 is again energized, a contact 5092 is opened, so that a relay M is de- energized, a contact Ma is opened, and contacts Mb1, Mb2 are closed. When an operator continues to press an up button U2, a relay 11 is energized so that a cage is raised at a low speed. When the up button U2 is released, the relay 11 is de-energized to stop the cage. As the relay M is energized and the contacts Mb1, Mb2 are opened, even if the up button U2 is pressed, the relay 11 is not energized. Even if either a down button D1 or D2 is pressed, a relay 12 is not energized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elevator maintenance operation device that can be safely operated during maintenance operations.

[Conventional technology]

For example, as disclosed in Japanese Patent Application Laid-Open No. 62-93192, the equipment in the hoistway must be periodically inspected, so maintenance personnel must switch the maintenance mode from automatic operation to maintenance operation and Climb on top of the car, hold down the up or down button for maintenance provided on the top stop of the car, raise or lower the car at low speed, and inspect the target equipment. Therefore, it is extremely dangerous if maintenance personnel accidentally touch the up or down button and the car moves while inspecting the equipment. Therefore, as disclosed in Japanese Patent Publication No. 42-25029, for example, a locking mechanism is provided on the stop button, and when the stop button is locked,
Some cars are constructed so that the car will never run even if the up button or down button is operated. We instruct the workers to always lock this stop button while working.

[Problem to be solved by the invention]

By the way, if you frequently start and stop the car for work, it is troublesome to lock the stop button each time.
Sometimes it doesn't lock. In addition, there is a problem in that conventional maintenance and operation devices are insufficient in terms of safety because workers sometimes get so absorbed in their work that they forget to lock the stop button.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator maintenance operation device that is extremely safe during maintenance operations and is easy to operate.

(Means for Solving Problem 11) According to the present invention, in order to achieve the above-mentioned object, a storage means is provided for storing the operation of the up button or the down button,
When the memory means is set after operating the up button or down button.

The apparatus further includes a control means for validating the operation of the up or down button when the operation of the up or down button is invalidated and the storage means is reset.

[Effect]

With the present invention configured as described above, it is assumed that a maintenance worker gets on the car, continues to press the up button, for example, and stops at a predetermined floor. At this time, you forget to lock the stop button, and even if you press the up button after completing the work, the car will not run. Therefore, the maintenance worker can lock and release the stop button, and then push the up button and start the car running, which is extremely safe.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an electrical wiring diagram showing an embodiment of the elevator maintenance and operation apparatus of the present invention.

In Figure 1, P and N are DC power supply terminals, 43A is a relay for high-speed operation, 43C is a relay for maintenance operation (low speed), 43Ca is its normally open contact, and relays 43A and 43C are switched by switch SW. . BSI, BS2 are stop buttons (not shown) provided in and on the car, SS
Engineering~SSn is a safety switch such as a manhole switch or catch switch, 50 is a stop button BSI, BS2. This is a safety confirmation relay that is energized when all safety switches SSI to SSn are normal. 50a, 50a2 are normally open contacts, and Ul and U2 are lifting coppers provided in and on the car. Dl and D2 are lowering buttons, 11 is a raising relay 11a and 11a2 is its normally open contact, 11b is its normally closed contact, 12 is a lowering relay 12a8.12a2
is its normally open contact, 12b is its normally closed contact, and relay 11
．． When 12 is energized, the car is raised or lowered at low speed by a control device (not shown).0M is relay 50.
50 Ma is a memory relay that is energized when either relay 11 or 12 is energized, and 50 Ma is its normally open contact Mb.
1, Mb, is its normally closed contact.

Next, the operation of this embodiment will be explained.

Now, in order for maintenance personnel to get on the car and inspect the equipment in the hoistway, switch SW is switched to maintenance operation, and relay 4
Suppose that 3G is activated and a maintenance worker gets on top of the car. and,
Lock the stop switch BS2 and de-energize the relay 50,
Next, the stop switch BS2 is reset and the relay 50 is energized again. As a result, contact 5082 opens, so relay M
is deenergized, contact Ma is open, and contacts Mb, , Mb, are closed. The maintenance worker continues to press the lifting copper U2 on the car in order to rise at a slow speed. P 50 a 143 Ca-
Relay 1 by U2-12b-Mb, -11-N circuit
1 is energized and the car moves up at low speed.

By closing the contact 11a2, the relay M is energized and is self-held by the contact Ma. Also, contact Mb1 opens, but contact 1 connected in parallel with this contact Mb1
Since 1a4 is closed, relay 11 has no relation to contact Mb. A maintenance worker on the designated floor lifts the ascending copper U2.
When released, the relay 11 is deenergized and the car stops.

At this time, relay M is energized, so contacts Mb1 and M
b. is open. Therefore, even if the ascending copper U2 is pressed, the contact Mb1 is open, so the relay 11 is not energized.Similarly, even if the descending button Di or D2 is pressed, the contact Mb is open, so the relay 12 is not energized. is not energized, which is incorrect.

Which rising copper U1. Even if the U2 lowering buttons D1 and D2 are pressed, the car will not run.

Next, the stop switch BS2 is locked. As a result, the relay 50 is deenergized and the contact 50a2 is opened.

Relay M is deenergized. In addition, since the contact 50a□ also opens,
Same as above, both raising copper U1, U2, lowering button D1
, the car does not run even if you press D2.

When this stop switch BS2 is reset to its original state, the relay 50
is energized, the contact 50a1 closes, and the rising copper U1, U2
The car can run by pressing any of the lowering buttons Di and D2.

Thus, any rising copper U1. U2, lowering button D1
, D2, and when the car runs at low speed and stops at a predetermined floor, the car will not run even if any of the ascending coppers U1, U2 and descending buttons D1, D2 are pushed again.

Therefore, maintenance personnel can work on the car safely and with peace of mind.

Although this embodiment is configured using a relay which is a contact point, it is of course possible to configure a non-contact circuit using a microcomputer instead of a relay.

〔Effect of the invention〕

According to the present invention, when the maintenance button is pressed and the operation is performed at low speed and stopped at a predetermined floor, if the stop button is not locked and the operation is not resumed,
Since the car is configured so that it does not run even if any maintenance button is pressed, there is an effect that maintenance personnel can safely perform maintenance work on the car.

[Brief explanation of drawings]

FIG. 1 is an electrical wiring diagram showing an embodiment of the elevator maintenance and operation apparatus of the present invention. SW...Selector switch, 43A...Relay for high speed 43C...Relay for low speed 11...Relay for ascending 12...Relay for descending, M...Relay for memory 50.・Relay for safety confirmation, BSI, BS2...
Stop button, Ul, U2...Rising copper, Dl, D2...
Lowering button.

Claims (1)

[Claims] (1) A switching means for switching between automatic operation and maintenance operation, and a stop button for stopping the automatic operation are provided in and on the car, and when the automatic operation is switched to maintenance operation,
In an elevator maintenance operation device in which an up button and a down button are provided in and on the car to raise or lower the car by continuing to press the elevator, the elevator maintenance operation device is provided with a memory means for storing the operation of the up button or the down button, After operating the button or the down button, when the memory means is set, the action of the up or down button is disabled, and when the memory means is reset, the action of the up or down button is enabled. An elevator maintenance operation device characterized by comprising a control means.