JPH04345486A - Door driving device for mobile elevator - Google Patents

Abstract

PURPOSE:To serve as an aid for making a passenger cage light in weight by providing both the primary coil of a linear motor for drivingly opening/closing a door and an inverter at each floor section where the passenger cage stops, and concurrently providing the secondary conductor of the linear motor at the car door section of the passenger cage. CONSTITUTION:The secondary conductor of a linear motor is provided for the upper section of the car door of each passenger cage, and the primary coil 11 of the linear motor is provided for the upper section of the hall door of each stop floor section at the running side in such a way as to be faced to the secondary conductor of the linear motor. Inverters 13 corresponding to the passenger cages 1 through X are provided for running paths. For example, when the passenger cage X stops at the floor (y) of a shaft B, an inverter connection switch-over unit 14 which is discriminated by a XBy, is turned on, the inverter 13 of the cage X for driving the door is then connected to the primary coil 11 of the linear motor at the floor (y) of the shaft B which is discriminated by a By, the output electric power of the inverter 13 is supplied to the primary coil 11 of the linear motor for magnetization, so that the car door of the passenger cage X is drivingly opened/closed with the secondary conductor of the linear motor magnetically inducted.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door drive device for a self-propelled elevator for self-propelling a plurality of cars on the same traveling path.

0003

[Prior Art] Elevators that have been widely used in the past have a configuration in which one car is arranged in one hoistway. Most elevators, with the exception of trunk-type elevators, have a cage connected to a counterweight by a rope.

[0004] In contrast to such conventional sliding elevators, various new system concepts have been proposed to meet the demands for inter-floor traffic in future super-tall buildings. One such proposed system is
This is a self-propelled elevator in which the car itself travels without using ropes, and is a concept of a vertically and horizontally movable elevator that is configured to be able to travel horizontally as well as up and down.

[0005] This system is an epoch-making system that breaks away from the conventional concept of elevators having one car per hoistway, and allows multiple cars to run in one hoistway. It is attracting attention as a promising technology.

FIG. 1 shows such a vertically and horizontally movable elevator system. This elevator system is
Inside the running path 1 formed vertically and horizontally by a vertical running path from A to Z (hereinafter referred to as a shaft) and a horizontal running path,
A plurality of cars 2 numbered 1 to X are installed so as to be self-propelled. Each stop floor of the car 2 is provided with a hall door 3, and each car 2 is also provided with a car door 4, so that when the car 2 stops at the stop floor and allows passengers to get on and off, It opens and closes at the same time.

[0007]

[Problems to be Solved by the Invention] In such proposed self-propelled elevator systems, the car obtains propulsion force by a linear motor or the like, and has the following problems.

[0008] In the conventional hanging type elevator system,
The cage is connected by counterweights and ropes,
In order to raise and lower the car by rotating the sheave on which the rope is attached, the electric motor only needs to have the driving force for the unbalanced load between the car and the counterweight. was able to operate.

However, in the self-propelled elevator system, it is necessary to obtain the entire propulsion force for moving the car by a linear motor, etc., and for this purpose, it is necessary to operate the car of the same weight using a hanging type elevator system. When compared with the case where the elevator is operated by a self-propelled elevator system, the self-propelled elevator system requires significantly more capacity. Furthermore, in self-propelled elevators, it is necessary to install a linear motor etc. in the car, and even if the car has the same loading weight, the weight of the car itself is greater in self-propelled elevators than in suspension-type elevators. It also becomes heavier due to the weight of the linear motor.

[0010] Therefore, although the self-propelled elevator system has superior transportation capacity, it requires a much larger electric motor capacity to operate a car with the same loaded weight. For this reason, it is necessary to increase the capacity of the inverter and power supply that drive the electric motor, and there is a problem in that the capacity of the entire system is significantly larger than that of the conventional crane elevator system.

[0011] Therefore, in the self-propelled elevator system,
Reducing the weight as much as possible is a major technical challenge, and one way to help solve this problem is to reduce the weight of the door drive device.

[0012] In this respect, in the conventional door driving device for a sliding elevator, as shown in FIG. The drive electric motor 7 is configured to open and close via a speed reducer 8 and a door link 9. If such a conventional door drive device is applied as a door drive device for a self-propelled elevator, the weight of the car can be reduced by the traveling car. The electric motor for opening and closing the door is also loaded together with the linear motor for the door, which becomes a major impediment to weight reduction.

[0013] The present invention was made in order to solve such technical problems, and an object thereof is to provide a door drive device for a self-propelled elevator that can reduce the weight of a car. .

[Configuration of the invention]

[0015]

[Means for Solving the Problems] The present invention is a door drive device for a self-propelled elevator in which a car runs on a running path provided in a building, in which a stop floor portion of the car is located on the running path side. A primary winding of a linear motor for driving door opening/closing is installed at the car door, and an inverter is installed for supplying power to the primary winding of the linear motor, and the primary winding of the linear motor is installed at the car door of the car. A linear motor secondary conductor is attached so that it receives a driving force in the opening/closing direction due to the magnetic force generated by the excitation of the linear motor.

Further, the door driving device for a self-propelled elevator according to the present invention is provided with a number of inverters corresponding to the number of the cars, and each of these inverters is switched for each of the primary windings of the linear motor. An inverter connection switch for connection can be installed for each linear motor primary winding.

[0017]

[Function] In the door drive device for a self-propelled elevator of the present invention, a primary winding of a linear motor for driving the door opening/closing is installed at the stop floor portion of the car on the running road side, and the A linear motor secondary conductor is installed so as to receive driving force in the opening/closing direction due to the magnetic force generated by excitation of the linear motor primary winding, and an inverter installed on the running road side to supply electric power to the linear motor primary winding. By connecting this, the linear motor primary winding is excited by supplying power to the inverter, and a magnetic force is generated between the linear motor secondary conductor of the car door on the car side, and the car door can be opened and closed. can.

[0018] In this way, the car door can be opened and closed without installing a linear motor or an inverter as a power supply to the linear motor on the car side, and the weight of the car can be reduced.

Further, in the door drive device for a self-propelled elevator of the present invention, inverters of a number corresponding to the number of cars are installed on the running road side, and a linear motor primary winding installed at a stop floor part of the running track is installed. An inverter connection switch is installed for each linear motor primary winding to switch and connect each of these inverters to each line,
By installing only the linear motor secondary conductor in the car door section of the car, the inverter can be switched to the linear motor primary winding and energized using the inverter connection switch at the stop floor of each car. Therefore, it is only necessary to install as many expensive and heavy inverters as there are cars, and the configuration can be simplified.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be explained in detail below with reference to the drawings.

As shown in the overall configuration diagram of the self-propelled elevator system in FIG. A plurality of cars 2 are installed so that they can move vertically and horizontally. Then, 1 to 1 of the car 2 on the running path 1
A hall door 3 is installed at each stop floor up to y, and a car door 4 is attached to each car 2.

As shown in detail in FIG. 2, the car door 4 of each car 2 is attached so as to be able to open and close along the car door traveling rail 6, similar to the conventional example shown in FIG. A linear motor secondary conductor 10, such as a secondary winding or a permanent magnet, is installed at . In other words, this car 2 is not equipped with a linear motor drive device, and its weight is reduced.

Furthermore, as shown in detail in FIG.
A linear motor primary winding 11 is installed above the hall door 3 in the side stop floor portion so as to face the linear motor secondary conductor 10. Note that 12 is a three-sided frame of the elevator hall.

The configuration of a power supply circuit for exciting these linear motor primary windings 11 is shown in FIG. As shown in FIG. 4, inverters 13 corresponding to the cars 2 of cars 1 to X are installed on the road side, and
Hall door 3 for each floor 1 to y of the Z shaft hoistway
An inverter connection switch 14 for switching and connecting the inverters 11 of these No. 1 to X machines is installed for each of the linear motor primary windings 11 installed on the upper part.

Next, the operation of the door drive device for a self-propelled elevator constructed as described above will be explained. For example, now
When the No. 1 machine lands on the y floor of the B shaft, the inverter connection switch 14 identified by Winding wire 11
The output power of this inverter is supplied to the linear motor primary winding 11 to excite it, and the linear motor secondary conductor 10 is magnetically induced to open the car door 4 of the car 2 of car No.
Drives opening and closing.

In this way, in the door drive device for the self-propelled elevator of this embodiment, heavy objects such as the inverter and the linear motor primary winding are not installed on the car side, but on the traveling road side. Therefore, the weight of the car can be reduced.

Furthermore, in the above embodiment, even if the number of running routes and the number of stopping floors increases and the number of installed linear motor primary windings increases, the increase in the number of linear motor primary windings Simply install inverter connection switchers for the same number of inverters as there are cars, and there is no need to add more inverters, and there is no need to install a large number of inverters, which can be particularly costly. This will result in lower prices.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and if the number of hoistways is relatively small and the number of stopping floors is small, if the inverter is installed together with the linear motor primary winding, There is no need to use an inverter connection switch as shown in Figure 2, and the electrical wiring can be simplified. However, if an inverter connection switch is used as shown in the embodiment of FIG. 4, especially in a large-scale system, it is possible to simply add an inverter connection switch that can be configured relatively easily using power transistors. Since the number of expensive devices such as inverters can be reduced, economical efficiency and maintainability can be improved. Therefore, whether or not to use an inverter connection switch can be selected depending on the user's needs.

[0029]

As described above, according to the present invention, the linear motor secondary conductor is installed on the car door side of the car, and the heavy linear motor primary winding and inverter are installed on the traveling road side. Since the opening/closing drive is performed, the weight of the car can be reduced.

Further, according to the present invention, as many inverters as the number of cars are installed, and the linear motor primary winding of each hall door is connected via an inverter connection switch, so that the number of inverters corresponding to the number of cars is Even if the number of parking floors increases, the number of expensive inverters to be installed is only required for the number of cars, and costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is a front view of the car door of the above embodiment.

FIG. 3 is a front view of the hall door of the above embodiment.

FIG. 4 is a circuit block diagram of another embodiment of the invention.

FIG. 5 is a front view of a conventional example.

[Explanation of symbols]

1... Driving route 2... Car 3...Hall door 4...Car door 10...Linear motor secondary conductor 11...Linear motor primary winding 13...Inverter 14...Inverter connection switch

Claims (2)

[Claims] 1. A door drive device for a self-propelled elevator in which a car runs on a running path provided in a building, wherein a linear motor for driving door opening/closing is provided at a stop floor of the car on the running path side. In addition to installing a primary winding, an inverter for supplying power to the linear motor primary winding is installed, and the car door portion of the car is opened and closed by magnetic force generated by excitation of the linear motor primary winding. A door drive device for a self-propelled elevator consisting of a linear motor with a secondary conductor attached to receive the driving force. 2. The door drive device for a self-propelled elevator according to claim 1, wherein a number of inverters corresponding to the number of cars are installed, and each of these inverters is connected to each of the primary windings of the linear motor. A door drive device for a self-propelled elevator, which is constructed by installing an inverter connection switch for each linear motor primary winding to switch and connect.