JPH05201642A - Ropeless linear motor elevator - Google Patents

Abstract

PURPOSE:To safely rescue a passenger in a damaged cage when one between the first and second cages which rise and lower in a same elevator passage is damaged. CONSTITUTION:On the first and second cages 5 and 6, a connecting device 13 for connecting the cages in demountable manner is installed, and when one between the first and second cages 5 and 6 is damaged, the first and second cages 5 and 6 are connected by the connecting device, and the damaged cage is transferred to the closest floor by the propulsion force of the normal cage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-shaft multi-car type low-press linear motor elevator in which a plurality of cars independently move up and down in the same hoistway by the propulsive force of a linear motor.

[0002]

2. Description of the Related Art In a conventional rope type elevator, a car is provided at one end of the rope and a counterweight is provided at the other end, and the rope is wound around a sheave of a hoist to raise and lower the car by frictional force. The method, so-called traction method, is used.

Further, in a skyscraper, it is necessary to install a large number of elevators from the viewpoint of improving the driving ability and service of the elevators, so the effective space of the building is reduced. Therefore, a so-called one-shaft multi-car elevator has been proposed in which a plurality of sets of cars are arranged in a single hoistway so that the effective space of a building is not reduced even if a large number of elevators are installed.

FIG. 4 is a perspective view showing an example of a conventional one-shaft multi-car type low press linear motor elevator similar to that disclosed in Japanese Patent Laid-Open No. 102085/1993. In the figure, 1 is a hoistway, 2 is a floor, 3
Is a guide rail provided on both side wall surfaces of the hoistway 1, and 4 is a primary side coil of a linear motor laid on both side wall surfaces of the hoistway 1 over the entire hoisting stroke. It is divided into four coils 4a to 4d.

Reference numeral 5 is an upper car that is a first car provided in the hoistway 1, 6 is a lower car that is a second car provided below the upper car 5 in the hoistway 1, and 7 is each Baskets 5,6
The upper guide rollers 8 provided on the upper portions of both side surfaces of each of the cars 5 for guiding the cars 5 and 6 along the guide rails 3 are provided on the lower portions of the side surfaces of the cars 5 and 6 respectively. , 6 are lower guide rollers, and 9 is a braking device provided on the lower portions of both side surfaces of each car 5, 6.

Numeral 10 is a permanent magnet which is provided on both sides of each of the cars 5 and 6 so as to face the primary side coil 4 and constitutes the secondary side of the linear motor. It is divided into four magnets 10a-10d. A rare earth magnet having a thickness of about 5 mm is used as the permanent magnet 10, and an iron plate having a thickness of about 5 mm forming a magnetic path is lined on the back surface thereof. Further, iron powder or the like floats in the hoistway 1, and if the iron powder or the like adheres to the permanent magnet 10, it becomes difficult to remove it. Therefore, a thin plastic film is attached to the surface of the permanent magnet 10 to facilitate the removal of iron powder and the like from the permanent magnet 10.

FIG. 5 is a sectional view of the braking device 9 shown in FIG. In the figure, 9a is a pin, 9b is a pair of grippers that are rotatable around the pin 9a, 9c is a brake shoe that is provided at the tip of the gripper 9b and contacts and separates from both sides of the guide rail 3, and 9d is a brake shoe. A pressing spring for urging the gripper 9b in a direction in which 9c contacts the guide rail 3, 9e is a plunger connected to the gripper 9b, and 9f is a plunger 9
It is an electromagnetic coil that attracts e.

In the conventional low-press linear motor elevator constructed as described above, the primary coil 4
The upper car 5 and the lower car 6 are independently controlled by the propulsive force of the linear motor composed of the permanent magnet 10 and the permanent magnet 10 to move up and down along the guide rail 3. Further, by exciting the electromagnetic coil 9f and attracting the plunger 9e, the gripper 9b rotates against the pressing spring 9d,
The brake shoe 9c is separated from the guide rail 3 and the brake is released. On the contrary, if the electromagnetic coil 9f is not excited,
The brake shoe 9c is pressed against the guide rail 3 by the pressing force of the pressing spring 9d to apply a brake.

[0009]

In the conventional one-shaft multi-car type low press linear motor elevator as described above, the braking device 10 causes the guide rail 3 to move in the event of a failure of the control system. By gripping, the safety of the cars 5 and 6 is ensured. However, if the cars 5, 6 stop in the middle of the hoistway 1 (between floors), it is necessary to move the cars 5, 6 to the nearest floor in order to rescue passengers. If the brakes of the car braking device 10 are simply released, the defective car will fall due to its own weight, which is dangerous and it is difficult to rescue passengers.

The present invention has been made to solve the above-mentioned problems, and it is a first and a second invention.
An object of the present invention is to obtain a low-press linear motor elevator that can safely rescue passengers in a car when one of the cars fails.

[0011]

A low press linear motor elevator according to a first aspect of the present invention makes it possible to attach / detach these to / from at least one of the first and second cars moving up and down in the same hoistway. It is provided with a coupling device for coupling.

In a low press linear motor elevator according to a second aspect of the present invention, at least one of the first and second cars moving up and down in the same hoistway is provided with a connector for detachably connecting them. Furthermore, an opening device for electrically opening the coupler is provided.

[0013]

According to the first aspect of the invention, when one of the first and second cars fails, the first and second cars are connected to each other by a connector, and the failure car is driven by the normal driving force of the car. To the nearest floor.

According to a second aspect of the invention, the first and second aspects are provided.
When one of the cars fails, the first and second cars are connected to each other by a coupler, the normal car propulsive force moves the defective car to the nearest floor, and the coupler is electrically connected by an opening device. Open to.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a car of a low press linear motor elevator according to an embodiment of the inventions of claims 1 and 2, and an upper car 5 and a lower car 6 are the same as those of a conventional example. In the figure, 11 is an upper car side connecting part that is attached to the lower part of the upper car 5, 12 is a lower car side connecting part that is attached to the upper part of the lower car 6 and is detachably connected to the upper car side connecting part 11, 13 Is a connector for connecting the upper car 5 and the lower car 6 to each other in a detachable manner, each connector 11 and 12.

Next, the operation will be described. For example, if the lower car 6 breaks down and stops in the middle of the hoistway 1, first, the normal upper car (rescue car) 5 descends, and the coupler 13 docks to the lower car (failed car) 6. .. As a result, the two cars 5 and 6 can be raised and lowered as a unit. Therefore, after connecting, the braking device 9 of the lower car 6 is released, and the lower car 6 is moved to the nearest floor by the propulsive force of the linear motor of the upper car 5.
As a result, the passengers in the lower car 6 can be safely rescued.

At this time, the braking by the braking device 9 of the lower car 6 is electrically released by the signal from the upper car 5. Also, the capacity of the linear motor of the upper car 5 is
Usually, it is not so large as to raise the two cars 5 and 6, but it is sufficiently possible if it is lowered at a low speed.

FIG. 2 is a block diagram showing the open state of the connector 13 of FIG. 1, and FIG. 3 is a block diagram showing the connected state of the connector 13 of FIG. 1, where the upper car side connecting portion 11 and the lower car side are shown. The connecting portion 12 has the same structure. When the coupling surfaces of the coupling portions 11 and 12 approach each other during coupling, the mating coupling locks 11b and 12b rotate counterclockwise by the tips of the coupling heads 11a and 12a. When the connecting surfaces come into close contact and reach the connecting position, the connecting lock 11
The b and 12b are rotated by the tension of the pull-back springs 11c and 12c to return to their original positions, and engage with the recesses on the inner surfaces of the coupling heads 11a and 12a. This completes the connection, as shown in FIG.

When the electromagnetic coils 11d and 12d are excited during opening, the plungers 11e and 12e are attracted in the direction of the arrow in FIG. By the movement of the plungers 11e and 12e, the open levers 11f and 12f rotate against the pull-back springs 11c and 12c, whereby the coupling locks 11b and 12b rotate and the coupling is released as shown in FIG. Incidentally, the opening device 14 of this embodiment
Is composed of electromagnetic coils 11d and 12d, plungers 11e and 12e, and open levers 11f and 12f.

Since the coupler 13 of this embodiment is electrically opened by the opening device 14, it is possible to easily disconnect the rescue car from the defective car after moving the defective car to the nearest floor.

In the above embodiment, a linear synchronous motor is shown as the linear motor, but it is sufficient if the car can be raised and lowered by a low press. For example, a primary coil laid in the hoistway and a secondary coil attached to the car. It may be a linear induction motor having a conductor.

Further, in the above-mentioned embodiment, the coupler 13 is attached to both the cars 5 and 6, but if both the cars 5 and 6 can be connected to each other, they may be attached to only one of them. Is not limited to the above embodiment. Further, in the above embodiment, the low press linear motor elevator having a total of two cars in the same hoistway is shown, but the present invention can be applied to the case of three or more cars.

[0023]

As described above, the low-press linear motor elevator according to the invention of claim 1 can be attached to and detached from at least one of the first and second cars moving up and down in the same hoistway. Since a coupler to be connected to is provided, when one of the first and second cars fails, the first and second cars are connected to each other by the connector, and the defective car is driven by the normal driving force of the car. Since it can be moved to the nearest floor, passengers in the faulty car can be safely rescued, and safety and reliability can be improved.

Further, in the low-press linear motor elevator according to a second aspect of the present invention, at least one of the first and second cars moving up and down in the same hoistway is provided with a connector for detachably connecting them. In addition to the effect of the invention of claim 1, since the opening device for electrically opening the coupler is further provided, the normal car is promptly disconnected from the failure car after moving the failure car. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a car of a low press linear motor elevator according to an embodiment of the inventions of claims 1 and 2. FIG.

2 is a configuration diagram showing an open state of the coupler of FIG. 1. FIG.

3 is a configuration diagram showing a connected state of the connector of FIG. 1. FIG.

FIG. 4 is a perspective view showing an example of a conventional low-press linear motor elevator.

5 is a cross-sectional view of the braking device of FIG.

[Explanation of symbols]

 1 Hoistway 5 Upper car (first car) 6 Lower car (second car) 13 Coupler 14 Opening device

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[Procedure amendment]

[Submission date] August 14, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

In the conventional one-shaft multi-car type low press linear motor elevator as described above, in the event of a failure of the control system, the braking device 9 causes the guide rail 3 to move. By gripping, the safety of the cars 5 and 6 is ensured. However, if the cars 5, 6 stop in the middle of the hoistway 1 (between floors), it is necessary to move the cars 5, 6 to the nearest floor in order to rescue passengers. If the brakes of the car braking device 9 are simply released, the defective car falls due to its own weight, which is dangerous and it is difficult to rescue passengers.

Claims (2)

[Claims] 1. A first car that moves up and down in a hoistway by the propulsive force of a linear motor, and a first car that independently moves up and down in the same hoistway by the propulsive force of a linear motor in the same car. A low press linear motor elevator, comprising: a car 2; and a connector provided on at least one of the first and second cars and detachably connecting them. 2. A first car that moves up and down in a hoistway by a propulsive force of a linear motor, and a first car that independently moves up and down in the same hoistway as the first car by a propulsive force of a linear motor. And a connector provided on at least one of the first and second cars and detachably connecting them to each other, and an opening device for electrically opening the connector. A low-press linear motor elevator that is characterized by