JPH08282936A - Automatic switching device for elevator operation - Google Patents

Abstract

PURPOSE: To provide an elevator operation automatic switching device which can automatically perform switching work of operation of an elevator for maintenance inspection. CONSTITUTION: An automatic operation signal, when supplied, is connected to an operation control part 32 for automatically operating an elevator, in-car automatic/manual changeover switch 36, car upper automatic/manual changeover switch 10 and a receptacle 12, to detect lighting of a maintenance illuminating lamp 22 used outside a car 2. With the above items, a device has an operation switching part 34 for controlling supply of an automatic operation signal to the operation control part 32, and when detected lighting of the maintenance illuminating lamp 22 by connecting it to the receptacle 12, by interrupting the automatic operation signal supplied to the operation control part 32, operation of the elevator during automatic operation is automatically switched to manual operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator operation automatic switching device in an elevator capable of automatic and manual operation switching,
Particularly, it relates to means for improving work efficiency during maintenance and inspection.

[0002]

2. Description of the Related Art The conventional elevator shown in FIG. 3 is of a type in which an operator rides on a car for maintenance and inspection. Therefore, an on-car switch box 4 is mounted on the car 2 to enable operation control of the elevator. The car switch box 4 is provided with a car door switch 6 for switching between opening and closing of the door of the car 2, a car on / off switch 8 for switching between running and non-operating of the elevator, and automatic / manual operation of the elevator. Switchable automatic / manual switch 10 on the car and outlet 1
2 are provided. Further, the upper end point switch 18 is provided on the main rail 16 in the hoistway 14, and the cam 20 is located on the main rail 16 side of the car 2 and at a position which is to be engaged with the upper end point switch 18 when the car 2 rises. Each is provided. During manual operation of the elevator, when the car 2 is raised and the upper end point switch 18 and the cam 20 are engaged, the automatic stop mechanism operates and the car 2 is stopped.
At this time, the distance between the ceiling of the hoistway 14 and the upper surface of the car 2 is about 1200 mm, and a sufficient space is secured for performing maintenance work. On the other hand, during automatic operation of the elevator, the car 2 is moved up and stopped at the regular floor landing position on the top floor. At this time, the distance between the ceiling of the hoistway 14 and the upper surface of the car 2 is about 200 mm. That is, even if the upper end point switch 18 and the cam 20 are engaged, the automatic stop mechanism is not operated during the automatic operation.

Since the conventional elevator has the above-mentioned structure, when the maintenance and inspection work is performed on the car 2, the procedure is as follows. That is,
The operator rides on the car 2, inserts the maintenance lighting 22 brought onto the car 2 into the outlet 12 to turn on the light, turns off the car upper door switch 6 and puts the car upper operation / pause switching switch 8 on standby. Then, the on-car automatic / manual switch 10 is switched to manual. In this way, the on-car automatic / manual switch 10 is switched to the manual mode and the automatic stop mechanism is operated to secure a working space on the car 2, and then the work is started.

[0004]

However, in the conventional maintenance / inspection work, it is necessary to always switch to the manual operation in order to secure a working space, and therefore the switch is manually switched for that purpose. necessary. The switching work is troublesome.

The present invention has been made to solve the above problems, and an object thereof is to provide an elevator operation automatic switching device capable of automatically performing an elevator operation switching operation for maintenance and inspection. To do.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 is an elevator capable of automatic / manual switching of operation, and operates the elevator in accordance with a signal input. The maintenance tool is used, which has operation control means for controlling, tool usage detection means for detecting use of maintenance tool, and signal supply means for controlling supply of signal to the operation control means. It is sometimes characterized by automatically switching the elevator to manual operation.

According to a second aspect of the present invention, in the elevator operation automatic switching device according to the first aspect, the appliance usage detecting means is a lighting detecting means for detecting lighting of a maintenance lighting used outside the car, The elevator is automatically switched to manual operation when the maintenance lighting is turned on.

[0008]

In the present invention having the above structure,
When performing maintenance and inspection outside the car, when the tool use detection means detects that the maintenance tool has been used, the signal supply means controls the signal supplied to the operation control means, and the automatic operation is not being performed. Switch the elevator to manual operation. In this way, the operation of the elevator is automatically switched from automatic to manual by detecting that the maintenance tool that is always used at the time of maintenance and inspection work is used, so that the switch switching work is unnecessary and it is convenient.

Further, when the maintenance tool is the maintenance lighting, the lighting detection means detects that the maintenance lighting is turned on to switch the elevator which was in the automatic driving mode to the manual driving mode. In this way, the elevator operation is automatically switched from automatic to manual by detecting that the maintenance lighting, which is always used during maintenance and inspection to ensure the brightness of maintenance and inspection work, is turned on. It is convenient because no switching work is required.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. The same elements as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 is a schematic diagram showing an embodiment of an elevator operation automatic switching device according to the present invention. The elevator operation automatic switching device 30 in this embodiment includes an operation control unit 32 and an operation switching unit 34. Operation control unit 32
Is operation control means for controlling the operation of the elevator according to the input signal, and automatically operates the elevator when the automatic operation signal is supplied. The operation switching unit 34 is a tool use detecting means for detecting the use of the maintenance tool, and in the present embodiment, a lighting detection means for detecting the lighting of the maintenance lighting 22 used outside the car 2 as the maintenance tool. ,
It is also a signal supply means for controlling the supply of signals to the operation control unit 32, and an in-car automatic / manual switch 3 for switching automatic / manual operation of the elevator installed in the car 2
6 Automatic / manual switch 10 on the car and outlet 1
2 is connected to.

FIG. 2 shows an elevator operation automatic switching device 30.
3 is a main part circuit diagram of FIG. Of these, the operation switching unit 34 is composed of three circuits, an AC circuit, a DC circuit, and an automatic operation signal circuit. The AC circuit includes a resistor 38, a photocoupler detection unit 40a of the two photocouplers 40, and
And a diode 42. The photocoupler detection unit 40a is connected in parallel and in the opposite direction for AC. The DC circuit includes a relay 44 for detecting that each photocoupler operating unit 40b of the two photocouplers 40 and the maintenance lighting is connected to an outlet and turned on, and a self-holding circuit contact 46 of the relay 44. And a reset switch 48 for deactivating and deactivating the self-holding circuit of the relay 44. The photocoupler operating unit 40b is connected in parallel and in the forward direction for DC. In the automatic operation signal circuit, the in-car automatic / manual switch 36, the on-car automatic / manual switch 10 and the contact 50 of the relay 44 are connected in series. In this circuit configuration, the manual operation is performed when the in-car automatic / manual switch 36 and the on-car automatic / manual switch 10 are switched to the manual operation.

A feature of this embodiment is that the operation of the elevator is automatically switched from automatic to manual by detecting that the maintenance lighting is connected to the outlet and turned on. As a result, it is possible to save the time and effort of the manual switching work of the switches, which must be performed at the time of maintenance and inspection.

The operation of this embodiment will be described below.

When carrying out maintenance and inspection work on the car 2, an operator rides on the car 2 and inserts the maintenance light 22 brought on the car 2 into the outlet 12 to turn on the light. In the operation switching unit 34, when the maintenance lighting 22 is connected to the outlet 12, the photocoupler detection unit 4
An electric current flows through 0a, which causes the photocoupler operation unit 4
0b becomes conductive and the relay 44 is excited. When the relay 44 is excited, the self-holding circuit contact 46 is closed and the reset switch 48 is also closed, so that the self-holding circuit is formed. On the other hand, when the relay 44 is excited, the contact 50
Is opened and the signal supplied to the operation control unit 32 is cut off. The operation control unit 32 in the present embodiment is an automatic
The elevator is automatically operated by the automatic operation signal input by operating the manual changeover switch 36 or the on-car automatic / manual changeover switch 10. However, when recognizing that the automatic operation signal is cut off by the opening operation of the contact 50 described above,
Switch automatic operation to manual operation.

Once the maintenance light 22 is turned on, even if the maintenance light 22 of the operation switching section 34 is turned off, the reset switch 48 is operated to shut off the self-holding circuit and demagnetize the relay 44. The elevator remains in manual operation until it is turned on. Therefore, the reset switch 4
The state of manual operation of the elevator can be reliably maintained until 8 is operated.

As described above, according to this embodiment, it is possible to automatically switch the elevator which was in the automatic operation mode to the manual operation mode by detecting the lighting of the maintenance light 22 which is always used during the maintenance and inspection. it can. Therefore, it is not necessary to perform the switching operation to the manual operation by the switch operation, which saves the trouble.

In the present embodiment, an example in which the operation of the elevator is automatically switched from automatic to manual by detecting the lighting of the maintenance lighting so that it can be implemented in an elevator having a simple structure such as a home elevator However, it can be applied to switch the operation of the elevator by using a maintenance tool according to the type of the elevator and the environment of the place where the maintenance and inspection are performed.

Further, the switching between the automatic and manual operation of the elevator in the operation control section 32 is performed by supplying and shutting off the automatic operation signal. However, it is possible to appropriately change the design according to the type of the supplied signal or the like. Can be done easily in.

Further, in the present embodiment, the case where the maintenance and inspection is performed on the car 2 has been described, but the present invention is not limited to this and is applicable to the case where the maintenance and inspection is performed under the car.

[0021]

According to the present invention, the operation of the elevator is automatically switched from the automatic mode to the manual mode by detecting that the maintenance fixture such as the maintenance lighting used during the maintenance and inspection is used. Therefore, it becomes possible to reliably perform the switching operation to the manual operation. Further, it is convenient because the work of switching the switch is unnecessary.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of an elevator automatic switching device according to the present invention.

FIG. 2 is a circuit diagram of a main part of an elevator operation automatic switching device according to the present embodiment.

FIG. 3 is a schematic view of a conventional elevator, and is a view for explaining various switches provided on a car.

[Explanation of symbols]

2 car, 4 car switch box, 6 car door switch, 8 car on / off switch, 10
On-cage automatic / manual switch, 12 outlets,
14 hoistways, 16 main rails, 18 upper end switch, 20 cams, 22 maintenance lights, 24 main ropes,
30 Elevator operation automatic changeover device, 32 Operation control unit, 34 Operation changeover unit, 36 In-car automatic / manual changeover switch, 38 Resistance, 40 Photocoupler, 40a
Photocoupler detection unit, 40b Photocoupler operation unit, 42 diode, 44 relay, 46 self-holding circuit contact, 48 reset switch, 50 contact.

Claims (2)

[Claims] 1. An elevator capable of automatic / manual switching of operation, operation control means for controlling the operation of the elevator according to an input signal, equipment use detection means for detecting use of maintenance equipment, and said operation A signal supply means for controlling the supply of a signal to the control means; and an automatic elevator operation switching device, characterized in that the elevator is automatically switched to a manual operation when the maintenance tool is used. 2. The elevator operation automatic switching device according to claim 1, wherein the appliance usage detection means is lighting detection means for detecting lighting of maintenance lighting used outside the car, and the maintenance lighting is turned on. An automatic elevator operation switching device, which automatically switches the elevator to a manual operation when the elevator is operated.