JPH04361968A - Elevator - Google Patents

Abstract

PURPOSE:To avoid collision between a plurality of cages guided by the same guide rail in an elevating path and driven by a linear motor and to enable service of any cage to any floor. CONSTITUTION:A refuge 1a is provided on a side of an elevating path 1, and a refuge device 32 is installed comprising a movement frame 24, guide rails 25 to 28, a rack 29, a pinion 30 and a motor 31. When a cage which should take refuge stops in the movement frame 24 and holds the guide rails 25 and 26, the movement frame 24 is retreated into the refuge 1a. The other cages are guided by the guide rails 27 and 28 and can pass the refuge 1a.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an elevator system in which a plurality of cars are raised and lowered via the same guide rail.

0002

[Prior Art] Conventionally, in elevators in skyscrapers,
From the perspective of improving elevator operation ability and service,
It is necessary to install a large number of elevators. For this reason,
It is inevitable that the usable space in buildings will decrease. Therefore, in order to prevent the effective space of a building from decreasing even when a large number of elevators are installed, a one-shaft multi-car type elevator has been proposed in which multiple cars are arranged in a single hoistway.

FIG. 7 is a configuration diagram showing a one-shaft multi-car type elevator disclosed in, for example, Japanese Patent Laid-Open No. 2-106570. In the figure, 1 is a hoistway, 2A is a first car, and 2B is a second car located directly below the first car 2A.
In the car, the first car 2A is roped 1:1 through the main rope 3 and connected to the counterweight 4, and the second car 2B
is roped in a ratio of 2:1 via a main rope 5 whose one end is connected to the machine room, and is connected to a counterweight 6. The main ropes 3 and 5 are wound around hoisting machines 7 and 8, respectively, and the hoisting machines 7 and 8 are driven by electric motors 9 and 10, respectively. Reference numerals 11 and 12 are speed governors that detect the ascending and descending speeds of the cars 2A and 2B, respectively.

[0004] The conventional one-shaft multi-car type elevator system is constructed as described above, and the electric motors 9 and 10 drive the hoisting machines 7 and 8, respectively, so that the first and second cars 2A and 2B are connected to the same car. The robot moves up and down while being guided by guide rails (not shown). Since both cars 2A and 2B are arranged in a single hoistway 1, it is possible to reduce the space compared to a case where the cars are arranged side by side.

[0005]

[Problems to be Solved by the Invention] In the conventional elevator system as described above, since the first and second cars 2A and 2B are driven by the main ropes 3 and 5, respectively, the counterweights 4 and , 6 and the main ropes 3, 5 need to be arranged in parallel, which poses a problem in that the space of the hoistway 1 needs to be increased accordingly. Furthermore, since the first and second cars 2A and 2B run on the same guide rail,
In the unlikely event of an accident, there is a problem that there is a risk that both cars 2A and 2B will collide.

[0006] This invention was made to solve the above problems, and it increases the effective use space and
Another object of the present invention is to provide an elevator device that can avoid a collision between a second car and a second car.

[0007]

[Means for Solving the Problems] An elevator system according to a first aspect of the present invention has a plurality of cars each driven by a linear motor disposed through the same guide rail in a hoistway, and An evacuation place is set on the side, and an evacuation device is installed to move the car to this evacuation place.

[0008] Furthermore, the elevator system according to the second invention is the elevator system according to the first invention, in which the evacuation place also serves as the landing.

[0009]

[Operation] In the first aspect of the present invention, a retreat place is set in the hoistway, and the car is moved to the retreat place by the escape device, so that other cars can be raised or lowered regardless of the escape car.

Furthermore, in the second aspect of the invention, since the evacuation area is also used as the landing area, the evacuation of the car and the boarding and alighting of passengers can be performed at the same place.

[0011]

[Example] Example 1. 1 to 5 are views showing an embodiment of the first aspect of the present invention, in which FIG. 1 is an enlarged view of the evacuation area, FIG. 2 is a longitudinal sectional view of the hoistway, and FIG. 3 is an enlarged perspective view of the car. , FIG. 4 is a block circuit diagram, and FIG. 5 is a flowchart showing the evacuation operation, in which parts similar to those of the conventional device are designated by the same reference numerals.

In FIGS. 1 to 3, 1a denotes first and second cars 2A, 2, which are spaces formed on the sides of the hoistway 1.
B's evacuation area, 21 is a landing, 22 and 23 are guide rails that are installed in the hoistway 1 and guide the cars 2A and 2B.
It is interrupted at the evacuation location 1a. Reference numeral 24 denotes a movable frame that is always stored in the evacuation area 1a, and the guide rail 22,
Guide rails 25, 26 and guide rails 27, 28 connecting the interrupted parts of 23 are fixed, and the guide rails 25, 23 are fixed.
26, a guide rail 27, approximately in the center of the moving frame 24;
28 is arranged at the end opposite to the evacuation place 1a. 29 is a rack fixed to the lower surface of the movable frame 24, 30 is a pinion that is decelerated and driven by an electric motor 31 installed in the evacuation area 1a, and is engaged with the rack 29;
The evacuation device 32 is constituted by:

Guide rollers 35A and 35B are provided on the upper and lower sides of the car 2A and engage with the guide rails 22 and 23, 36A and 36B are guide rollers for the car 2B, and 37A and 37B are guide rollers for the car 2A and 2B, respectively. The braking devices 38A and 38B provided at the bottom are the primary coils 39A and 39 of linear motors that are dividedly arranged over the entire lifting stroke on both sides of the guide rails 22 and 23, respectively.
Permanent magnets B are arranged separately on both sides of the cars 2A and 2B, respectively, and constitute the secondary side of the linear motor facing the primary coils 38A and 38B.

Rare earth magnets with a thickness of about 5 mm are used as the permanent magnets 39A and 39B, and the back surface thereof is lined with an iron plate with a thickness of about 5 mm to form a magnetic path. Incidentally, there are iron particles floating in the hoistway 1, and if these iron particles adhere to the permanent magnets 39A and 39B, it is extremely difficult to remove them. Therefore, the surfaces of these permanent magnets 39A and 39B are made of plastic. Covered with a thin film.

In FIG. 4, 41 is an elevator call device consisting of an in-car operation panel and a hall button, 42 is a first car position detection device that detects the position of the first car 2A, and 43 is a first car that also detects the direction. A direction detection device, 44 a position detection device for the second car, 45 a direction detection device,
46 is an evacuation control device, which includes a CPU 46A, a ROM 46B,
It has a RAM 46C and an input/output port 46D, and the input/output port 46D has a calling device 41 and each detection device 42 to 45.
A drive device 47 that drives the evacuation device 32 and the cars 2A and 2B is connected to the drive device 47.

Next, the operation of this embodiment will be explained with reference to FIG. The program in this flowchart is
It is stored in the ROM 46B of the evacuation control device 46.

[0017] When a driving command is issued in step 51,
The drive device 47 operates in response to a call from the call device 41, and the primary coils 38A, 38B of the linear motor are controlled. As a result, an electromagnetic force is generated between the permanent magnets 39A and 39B, and the first and second cars 2A and 2B run guided by the guide rails 22 and 23.

At step 52, the outputs of each of the detection devices 42 to 45 are taken in, and it is determined whether the first car 2A and the second car 2B are approaching each other. If they are not approaching, the process jumps to step 59 and normal operation is performed. At this time, if the moving frame 24 is moving forward toward the hoistway 1 side, the cars 2A and 2B are moved toward the guide rail 25.
, 26 and retreated to the evacuation area 1a.
It passes through this section while being guided by guide rails 27 and 28.

In step 52, the first car 2A and the first car 2
When it is determined that car B has approached, the first car 2 is moved in step 53.
It is determined whether A is close to the evacuation location 1a. If it is close, an evacuation command is issued to the first car 2A in step 54. The first car 2A now stops within the moving frame 24, and the control device 37A grips the guide rails 25, 26. Next, the electric motor 31 is driven, and the pinion 30 and the rack 29 are engaged, so that the movable frame 24 moves backward while supporting the first car 2A, and is stored in the retreat location 1a.

[0020] In step 55, the process waits until the evacuation of the first car 2A is completed, and when the evacuation is completed, the operation of the second car 2B is continued in step 56. The second car 2B now passes through the evacuation area 1a. Then, in step 57, wait until the first car 2A and the second car 2B are separated, and then
When A and 2B are separated from each other by a predetermined distance, the evacuation of the first car 2A is canceled in step 58, and the electric motor 31 is reversed to move the moving frame 24.
moves forward. Now, in step 59, normal operation begins.

[0021] In step 53, the first car 2A is moved to the evacuation location 1.
If it is determined that it is far from a, the process advances to step 60 and the second
Issue an evacuation command to car 2B. Below, steps 61-6
4, and the second car 2B is evacuated in the same way as the first car 2A. In this way, the first and second cages 2A,
2B can serve any floor without conflict.

Example 2. FIG. 6 is a vertical sectional view of a hoistway showing an embodiment of the second invention, and FIGS. 1 and 3 to 5 are also used in this embodiment. That is, in this embodiment, a boarding area 21 is provided at the evacuation area 1a, and the landing area 21 is used for both purposes, and evacuation and boarding and alighting can be performed at the same place, which is useful for improving operational efficiency.

[0023]

Effects of the Invention As explained above, in the first aspect of the present invention, a plurality of cars are guided by the same guide rail, each of these cars is driven by a linear motor, and a retreat place is provided on the side of the hoistway. Since we installed an evacuation device to move the car to this evacuation location, other cars can be raised and lowered regardless of the evacuation car, avoiding collisions between cars, and making it possible to service a car on any floor. There is an effect that can be done.

Furthermore, in the second aspect of the invention, since the evacuation area is also used as the landing, the evacuation of the car and the boarding and alighting of passengers can be done at the same place, which has the effect of improving the operating efficiency of the elevator.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention, and is an enlarged view of the evacuation location portion of FIG. 2;

FIG. 2 is a vertical cross-sectional view of a hoistway showing Embodiment 1 of the present invention.

FIG. 3 is an enlarged perspective view of the cage portion of FIG. 1;

FIG. 4 is a block circuit diagram of Embodiment 1 of the present invention.

FIG. 5 is a flowchart showing the evacuation operation according to FIG. 4;

FIG. 6 is a vertical cross-sectional view of a hoistway showing a second embodiment of the invention.

FIG. 7 is a configuration diagram showing a conventional one-shaft multi-car elevator.

[Explanation of symbols]

1 Hoistway 1a　　　　　　　　　　Evacuation place 2A 1st basket 2B 2nd basket 21　　　　　　　　　　　　　　　　　　　　　　 22, 23 Guide rail 25-28 Guide rail

Claims (2)

[Claims] [Claim 1] An elevator in which a plurality of cars are arranged to be guided by the same guide rail installed vertically in a hoistway, and each of these cars is driven by a linear motor, which is set on the side of the hoistway. An elevator device comprising: an evacuation place consisting of a vacant space; and an evacuation device for moving one of the above-mentioned cars to the evacuation place. 2. The elevator system according to claim 1, wherein the elevator system serves both as an evacuation area and as a landing on a service floor of the car.