JP2736183B2 - Door drive for self-propelled elevator - Google Patents

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 driving apparatus for a self-propelled elevator in which a plurality of cars are driven on the same traveling path.

[0003]

2. Description of the Related Art Conventionally, an elevator widely used has a configuration in which one car is arranged in one hoistway, and is used in a hydraulic elevator using a hydraulic plunger or a winding elevator used in a relatively small capacity area. Most of the systems, except for the trunk type elevators, are systems in which the rider and the counterweight are connected by ropes.

With respect to such conventional elevators, various new systems have been proposed to respond to the demands of inter-story traffic such as ultra-high-rise buildings in the future. One such proposed system is:
This is a self-propelled elevator in which the car itself travels without using a rope, and is a concept of a vertically and horizontally movable elevator having a configuration capable of traveling not only in the vertical direction but also in the horizontal direction.

[0005] This system breaks down the conventional concept of an elevator having a single car on one hoistway, and is capable of running a plurality of cars on one hoistway. Technology is attracting attention.

FIG. 1 shows such a vertically and horizontally movable elevator system. This elevator system
In a traveling path 1 formed vertically and horizontally by a longitudinal traveling path (hereinafter, referred to as a shaft) A to Z and a lateral traveling path,
A plurality of cars 1 to X are installed so as to run by themselves. A hold door 3 is provided at each stop floor of the car 2, and a car door 4 is also provided at each of the car 2. When the car 2 stops at the stop floor and passengers get on and off, It opens and closes at the same time.

[0007]

In such a proposed self-propelled elevator system, the car obtains propulsion by a linear motor or the like, and has the following problems.

[0008] In a conventional elevator system,
The car is connected by a counterweight and a rope,
In order to raise and lower the car by rotating the sheave with the rope by an electric motor, the electric motor only needs to have a driving force corresponding to the unbalanced load between the car and the counterweight. Was able to operate.

However, in a self-propelled elevator system, it is necessary to obtain the total propulsive force for running the car by a linear motor or the like. For this reason, a car having the same weight is operated by a slidable elevator system. Comparing the case with the case of operation by a self-propelled elevator system, the self-propelled elevator system requires a much larger capacity. Furthermore, in a self-propelled elevator, it is necessary to provide a linear motor or the like in the car, and even if the car has the same loading weight,
The weight of the car itself is heavier in a self-propelled elevator than in a straight elevator, by the weight of the linear motor.

Therefore, the self-propelled elevator system is excellent in transportation capacity, but has a much larger capacity of an electric motor for operating a car having the same loading weight. For this reason, it is necessary to increase the capacities of the inverter for driving the electric motor and the power supply, and there has been a problem that the capacity of the entire system is significantly larger than that of the conventional elevator system.

Therefore, in a self-propelled elevator system,
A major technical problem is to reduce the weight as much as possible, but as a solution to this problem, it is conceivable to reduce the weight of the door drive device.

In this respect, in the conventional door driving apparatus for a slide elevator, as shown in FIG. 5, the car door 5 opens and closes along the car door travel rail 6, and the door is mounted on a car. The driving motor 7 is configured to open and close via a speed reducer 8 and a door link 9. If such a conventional door driving device is applied as a door driving device of a self-propelled elevator, the weight of the car may increase. A door opening / closing electric motor is also mounted together with the linear motor, which is a major impediment to weight reduction.

The present invention has been made to solve such a technical problem, and has as its object to provide a self-propelled elevator door drive device capable of reducing the weight of a car. .

[Configuration of the Invention]

[0015]

SUMMARY OF THE INVENTION The present invention relates to a door driving apparatus for a self-propelled elevator in which a car runs by itself on a traveling path provided in a building. A linear motor primary winding for door opening / closing drive is installed, and an inverter for supplying electric power to the linear motor primary winding is installed, and the linear motor primary winding is provided on a car door portion of the car. The linear motor secondary conductor is attached so as to receive a driving force in the opening and closing direction by the magnetic force generated by the excitation.

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

[0017]

In the door driving device for a self-propelled elevator according to the present invention, a linear motor primary winding for opening and closing the door is installed on a stop floor portion of the car on the traveling road side, and the car door portion of the car is provided with the primary winding. A linear motor secondary conductor is mounted so as to receive a driving force in the opening and closing direction by the magnetic force generated by the excitation of the linear motor primary winding, and an inverter installed on the traveling road side to supply power to the linear motor primary winding. By connecting the power supply to the inverter, the primary winding of the linear motor is excited to generate a magnetic force between the linear motor secondary conductor of the car door on the car side, and the car door can be opened and closed. it can.

In this manner, the car door can be opened and closed without installing a linear motor or an inverter as a power supply for the linear motor on the car side, and the car can be reduced in weight.

In the door driving apparatus for a self-propelled elevator according to the present invention, the number of inverters corresponding to the number of cars is installed on the traveling road side, and the linear motor primary winding installed on the stop floor portion of the traveling road is provided. An inverter connection switch for switching and connecting each of these inverters to each wire is installed for each linear winding of the linear motor,
By installing only the linear motor secondary conductor in the car door part of the car, the inverter can be switched to the linear motor primary winding by the inverter connection switcher and excited at the stop floor of each car. It is only necessary to install expensive and heavy inverters by the number of cars, and the configuration can be simplified.

[0020]

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

As shown in the overall configuration diagram of the self-propelled elevator system of FIG. 1, a traveling path 1 that runs vertically and horizontally is composed of a vertical shaft A to Z (shafts) and a lateral traveling path. , A plurality of cars 2 are installed so as to be able to run freely vertically and horizontally. Then, one of the cars 2 on the traveling path 1
Holder 3 is installed at each of the stop floors to y, and 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 mounted so as to be able to open and close along a car door travel rail 6 as in the conventional example of FIG. In addition, a linear motor secondary conductor 10 such as a secondary winding or a permanent magnet is provided. In other words, the driving device for the linear motor is not installed in the car 2 and the weight is reduced.

As shown in detail in FIG.
A linear motor primary winding 11 is installed above the holder 3 at the side of the stop floor so as to face the linear motor secondary conductor 10. Reference numeral 12 denotes a three-way frame of the elevator hall.

FIG. 4 shows the configuration of a power supply circuit for exciting the primary winding 11 of the linear motor. As shown in FIG. 4, inverters 13 corresponding to each of cars 1 to X of car No. 1 to X are installed on the traveling road side.
An inverter for switching and connecting the inverters 11 of the 1st to Xth units to each of the linear motor primary windings 11 installed above the holder 3 of each of the first to yth floors of the hoistway of the Z shaft. A connection switch 14 is provided.

Next, the operation of the door driving device for a self-propelled elevator having the above configuration will be described. For example, now X
When the vehicle arrives at the y floor of the B shaft, the inverter connection switch 14 identified by XBy is turned on, and the door driving inverter 13 for the X motor is driven by the linear motor primary of the B shaft y floor hall identified by By. Winding 11
The output power of this inverter is supplied to the linear motor primary winding 11 to be excited, and the linear motor secondary conductor 10 is magnetically induced to carry out the car door 4 of the car 2 of the X-th car.
To open and close.

As described above, in the door driving device of the self-propelled elevator according to this embodiment, a heavy object such as an inverter or a primary winding of a linear motor is not installed on the car side but installed on the traveling road side. Therefore, the weight of the car can be reduced.

Further, in the above embodiment, even if the number of running paths increases, the number of stops increases, and the number of linear motor primary windings increases, the increased linear motor primary windings can be used. It is only necessary to install the same number of inverter connection switches as the number of cars and the same number of inverters, and there is no need to install additional inverters, and it is not necessary to install many inverters, which are particularly expensive in terms of cost. Can be reduced.

The present invention is not limited to the above embodiment. If the number of hoistways is relatively small and the number of stop floors is small, the inverter can be installed together with the primary winding of the linear motor. It is not necessary to use an inverter connection switching device as shown in FIG. However, if an inverter connection switch is used as shown in the embodiment of FIG. 4, especially in a large-scale system, it is only necessary to add an inverter connection switch which can be relatively easily constituted by power transistors. In addition, since the number of expensive devices such as inverters can be reduced, economy and maintainability can be improved. Therefore, whether or not to use the inverter connection switch can be selected according to the needs of the user.

[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 linear motor primary winding and the inverter, which are heavy objects, are installed on the roadway side of the car. Since the opening / closing drive is performed, the weight of the car can be reduced.

Further, according to the present invention, the number of inverters is equal to the number of cars, and the inverters are connected to the primary winding of the linear motor for each holder via the inverter connection switch. Even if the number of stop floors increases, the number of installed inverters, which is expensive, is required only for the number of cars, and the cost can be reduced.

[Brief description of the 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 car of the embodiment.

FIG. 3 is a front view of the hold door of the embodiment.

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Running path 2 ... Car 3 ... Holder 4 ... Car door 10 ... Linear motor secondary conductor 11 ... Linear motor primary winding 13 ... Inverter 14 ... Inverter connection switch

Claims (2)

(57) [Claims] 1. A self-propelled elevator door driving device in which a car runs on a traveling path provided in a building, wherein a linear motor for opening and closing a door is provided on a stop floor portion of the car on the traveling path side. Along with installing the primary winding, installing an inverter for supplying power to the linear motor primary winding, in the car door portion of the car,
A door driving device for a self-propelled elevator, comprising a linear motor secondary conductor attached so as to receive a driving force in an opening and closing direction by a magnetic force generated by exciting the linear motor primary winding. 2. The door driving apparatus for a self-propelled elevator according to claim 1, wherein a number of inverters corresponding to the number of the cars are installed, and each of the inverters is provided for each of the primary windings of the linear motor. A self-propelled elevator door drive device provided with an inverter connection switcher for switching and connecting each of the primary windings of the linear motor.