JPH0786074B2 - elevator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an elevator having a hatch door that automatically opens in the vertical direction when a car arrives at a landing position.

[Conventional technology]

FIG. 4 shows this conventional elevator having a hatch door that automatically opens and closes in the vertical direction.

A hatch door 4 that opens and closes in the vertical direction is arranged on each floor 1, 2, 3 of the building. The car 6 arranged in the hoistway 5 also has a door 7 that opens and closes in the vertical direction.
No. 74 and No. 51-78569.

In such an elevator, the hatch doors 4 provided in the halls on each floor automatically open only when the car 6 is in each hall position. The hatch door 4 on the floor is designed so as not to be opened automatically to ensure the safety of the user. Normally, the hatch door 4 is automatically opened only when the car 6 arrives at the floor where the hall call registration is performed and the passenger moves up and down to the car 6, and the car 6 opens and closes the hatch door 4. A drive device including a motor is installed. Door 7 of car 6
Is opened and closed by engaging the hatch door 4.

When inspecting the elevator, etc., it is necessary for an operator to enter the hoistway to perform the work. In such a case, first, the passenger enters the car 6 and pushes a maintenance switch (not shown) provided in the car 6 to lift Switch to maintenance mode. By this operation, the car 6 is set so as not to perform normal service, and in the maintenance mode, the car 6 is moved up and down at a slower speed than usual so as to ensure the safety of the worker who performs the inspection. Be driven.

When working in a pit, the hatch door 4 on the first floor
To open the car and enter the pit, first move the car 6 to the second floor and press the maintenance switch (not shown). As a result, the elevator is set to the maintenance mode and does not respond to hall calls or the like until the maintenance switch is restored. Also, 2
Because the maintenance switch is operated at the landing position on the floor,
The car 6 stops with the hatch door 4 and the door 7 kept open. The worker walks down from the car 6 to the elevator hall on the first floor, opens the hatch door 4 on the first floor by hand to enter the hoistway, and closes the hatch door 4 on the first floor to perform work on the pit. Start.

When performing work on the car 6, for example, the car 6 is stopped on the first floor, and the hatch door 4 on the second floor is opened by hand to get on the car 6 to start the work.

On the other hand, when the work on the pit is completed and the operator comes to the hall on the first floor, the hatch door 4 on the hall on the first floor is lifted upward by hand from the pit to open to the hall on the first floor.

Furthermore, when getting off from the top of the car 6 to the hall, the car 6 is stopped on the first floor, for example, in the lifting operation in the maintenance mode.
As a result, the upper part of the car 6 and the second floor hall are located at substantially the same height. From this state, the hatch door 4 on the second floor hall is opened by hand so that the passenger can enter the hall on the second floor.

[Problems to be Solved by the Invention]

As described above, conventionally, when performing hoistway work such as work inside a pit, it is necessary to manually open the hatch door 4 when entering the hoistway from the hall or when exiting the hall from the hoistway. However, the hatch door 4 is generally heavy, and this is remarkable as the size of the frontage of the landing, that is, the size of the entrance / exit is large, and it takes a lot of labor for one worker, and the work efficiency is likely to decrease.

In particular, when getting out of the hoistway to the landing, the operator must carefully secure the foothold in order to maintain the balance of the body, and the operation of opening the hatch door 4 by hand is extremely complicated. Is the reality. If the balance is lost when the hatch door 4 is opened by hand, there is a risk of causing a serious accident, and there is a problem in terms of safety.

The present invention solves the above-mentioned problems of the prior art,
An object of the present invention is to provide an elevator capable of automatically opening at least the hatch door when the vehicle exits the hoistway from the hoistway when the car is not in the car hall position.

[Means for Solving the Problems]

In order to achieve this object, the present invention provides a hatch door which is provided on the landing side of each floor and automatically opens in the vertical direction when a car arrives at the landing position, and at least one of the hatch doors is opened and closed. A drive device provided on the hall side,
In an elevator having a first switch provided in the car for setting the elevator to maintenance inspection mode,
A second switch for automatically opening the hatch door when the car is not at the landing position is provided in at least the hoistway of the landing side and the hoistway, and the car is at the landing position. In such a state, the drive device is operated by the operation of the second switch and the first switch.

[Action]

According to the present invention, when the hoistway work such as in-pit work is performed, at least when the hoistway exits the hall,
By closing the second switch provided in the hoistway in addition to closing the first switch, the drive device is actuated, and the predetermined hatch door can be automatically opened without the operator's hand. Therefore, the worker can get out of the hoistway to the landing without labor, and can secure excellent safety.

〔Example〕

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

Fig. 2 is a front view showing the operation panel in the car. The call registration buttons 10, 11 and 12 are vertically arranged in the center, and the direction lights 13 and 14 indicating the ascending and descending direction of the car are arranged above and to the left and right of the call registration buttons. Buttons 15 and 16 for instructing opening and closing of the door of the car are provided. Usually, a first switch 18 is provided in the operation panel 17 which is closed by a cover. The first switch 18 is a known one, for example, a maintenance switch that operates the car at a low speed. When the first switch 18 is closed and the car is in the landing position,
The hatch door 4 is configured to continue to be opened. As is well known, the hatch door 4 automatically opens in the vertical direction when the car reaches a predetermined landing position.

Figure 3 shows the vicinity of the call button at the hall,
For example, the call button portion of the hall on the first floor, together with the call buttons 19 and 20, and the direction lights 20 and 22, automatically operate the hatch door 4 by being operated by the operator when the car is not in the landing position. A second switch, such as a key switch, is provided to allow opening. Although not shown, the second and third floor call button portions are also provided with second switches, and the hoistway is also provided with a similar second switch.

FIG. 1 is a circuit diagram showing only the main part of the control device.

The first switch 18 in FIG. 2 described above is connected in series with the relay A and is connected between the power supplies PN. The second switch 24 on the first floor hall side is connected in series with the relay B, and the second switch 25 in the pit which is the first floor in the hoistway is connected in series with the relay C. The second switch 26 provided in the call button portion of the second floor hall is connected in series with the relay D, and the second switch 27 provided in the elevator on the second floor is connected in series with the relay E. Each series connection body is connected between power supplies PN.

Drive device 31 for opening and closing the hatch door provided on the first floor hall
Is connected in series to the parallel connection body of the a contacts 29, 30 of the relays B, C, and the drive device 34 for opening and closing the hatch door provided at the second floor hall is the a contacts 32, 33 of the relays D, E. They are connected in series to the parallel connection body, and are connected between the power supplies PN via the common a contact 28 and the common relay A contact 28.

In the figure, the second switch of the hall on the third floor, the second switch provided in the portion corresponding to the third floor in the hoistway, and the drive device for opening and closing the hatch door on the third floor are omitted. There is.

Next, a case where the worker enters the pit for maintenance work will be described.

The worker gets into the car and moves the car to the second floor, for example. When the car reaches the second floor, the hatch door 4 automatically opens, but at this time, the operator closes the first switch 18 in the car. As a result, the elevator maintenance mode is set, and the hall switch or the like is not responded until the first switch 18 is restored.
The hatch 4 on the second floor is kept open until the first switch 18 is restored. The above operation is the same as the conventional technique.

The worker who got off the car walks to the 1st floor hall, and 1
The second switch 24 of the floor hall is closed by a predetermined key. At this time, the relay A shown in FIG. 1 has already been excited by the closing of the first switch 18, and then the second switch.
Relay B is excited by 24. Therefore, a circuit of a-contact 28 ... a-contact 29 ... driving device 31 is formed between the power sources PN, and the driving device 31 operates to automatically open the hatch door 4 on the first floor. The worker enters the pit from here to perform a predetermined work, but in this embodiment, the work is performed by closing the hatch door 4 for safety. At this time, contact a 29
Is to be opened.

When the predetermined work in the pit is completed, the operator closes the second switch 25 in the pit. As a result, a circuit of a-contact 28 ... a-contact 30 ... driving device 31 is formed between the power supplies PN, and the driving device 31 operates to automatically open the hatch door 4 on the first floor.

When working in the hoistway on the second or third floor, the hatch 4 on each floor can be automatically opened by the same operation.

According to this embodiment, when the worker enters the hoistway from the hall and exits the hoistway from the hall, the first switch 18 is closed and the second switch 24, 2 is closed.
By closing the appropriate one of 5,26,27,
The hatch door on the corresponding landing floor can be automatically opened without the operator's hand, the labor of the operator can be reduced, and the work efficiency can be improved. In particular, by operating the second switches 25, 27, etc. in the hoistway, it is possible to easily exit the hoistway from within the hoistway where it is difficult to secure a foothold, and it is possible to obtain excellent safety.

In the above embodiment, the second switch is provided both on the landing floor and in the hoistway corresponding thereto, and the hatch door 4 is provided both when entering the hoistway from the landing and when exiting the landing from the hoistway. However, the present invention does not provide a second switch on the hall side, and does not provide a second switch on the hall side in consideration of only when the person exits the hall from a high-risk hoistway. It also includes a configuration in which only the second switch is provided.
With this configuration, when entering the hoistway from the hall, the hatch door 4 must be manually opened upward as in the conventional case, which requires labor, but generally the floor of the hall is solid. A stable scaffold is basically formed because it is stable, and therefore, there is little risk when opening the hatch door 4 at the landing. From this point of view, even if the hatch door 4 is automatically opened only when exiting the hoistway from the hoistway, an excellent effect close to that of the above embodiment can be obtained especially in terms of safety.

Further, in the above-described embodiment, the drive device for opening and closing the hatch door 4 is configured for each landing floor, but in an elevator having a common drive device on the car side, the drive device is, for example, the lowest floor. Only need to attach it. That is, the present invention can be applied to an elevator having a drive device for opening and closing a hatch door on at least one floor.

〔The invention's effect〕

As described above, according to the present invention, when the car is not at the landing position, the first switch in the car is closed and at least the hoistway is provided on the landing side or in the hoistway. By closing the second switch, the hatch door can be automatically opened in order to get out of the hoistway to the hall, and the labor at this time can be reduced compared to the conventional one, and the work efficiency can be improved. Moreover, the safety can be improved as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a main part of an elevator control device according to an embodiment of the present invention, FIG. 2 is a front view of a driving operation panel in a car, and FIG. 3 is a front view showing a call button part of a hall. FIG. 4 and FIG. 4 are schematic side views of an elevator to which the present invention is applied. 4 ... Hatch door, 5 ... Hoistway, 6 ... Car, 18 ...
… First switch, 24-27 …… Second switch, 28-3
0,32,33 …… A contact, 31,34 …… Drive device, AE …… Relay.

Claims (1)

[Claims] 1. A hatch door which is provided on the floor side of each floor and automatically opens in the vertical direction when a car arrives at the hall position,
In the elevator provided with a drive device provided on the hall side to open and close at least one of the hatch doors, and a first switch provided in the car for setting the elevator in the maintenance inspection mode, A second switch for automatically opening the hatch door when not in the landing position is provided in at least the hoistway on the landing side or in the hoistway, and when the car is not in the landing position. The elevator is characterized in that the drive device is operated by operating the second switch and the first switch.