JPH0432475A - Elevator device - Google Patents

Abstract

PURPOSE:To enlarge transport capacity by constructing an elevator device provided with elevator cages on both ends of a winding rope in such a way as to bring one elevator in line with a specified floor by controlling a winding machine on the basis of a cage position detection signal and to bring the other cage in line with a specified floor by controlling the tension of a rope on the basis of a cage position detection signal. CONSTITUTION:At the time of stopping a first elevator 6 at an upper floor 13 and a second elevator 7 at a lower floor 17, both elevator cages 6, 7 are elevated/lowered by a winding machine 4, then the position of the first elevator cage 6 is detected by a first position detecting means 21, and the winding machine 4 is driven/controlled in such a way that the first elevator is brought in line with the hall floor 14 of the upper floor 13. Meanwhile, the position of the second elevator cage 7 is detected by a second position detecting means 22, and winding rope tension mechanism 23 is operated by the control circuit 24 to control the tension of a winding rope in such a way that the second elevator cage 7 is brought in line with a hall floor 18.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an elevator system in which an elevator car is provided at both ends of a hoisting rope.

[Prior Art] Conventionally, rope-type elevators have generally been provided with an elevator car at one end of the rope and a counterweight at the other end. In other words, a hoisting rope is wound around a sheave of a hoisting machine installed in a machine room on the upper or lower side of the hoistway, and the elevator car is attached to one end of the hoisting rope, and the other end is used to raise and lower the elevator car in the opposite direction. A weight is provided.

By the way, recently, research has been carried out on the use of deep underground.

In this case, it becomes necessary to efficiently transport a large number of people between a deep underground mall or a railway station and the surface area. Large-capacity elevators, spiral escalators, and the like have been proposed as means to meet this demand.

[Problem to be solved by the invention] However, when using deep underground, conventional large-capacity elevators and spiral escalators have limited transportation capacity and require a large installation space.
Problems such as increased installation, operating, and maintenance costs were pointed out. Note that this problem is not limited to transportation deep underground, and similar problems have occurred in other types of mass transportation.

Therefore, an object of the present invention is to provide an elevator system that can increase transportation capacity, reduce installation space, and reduce costs such as installation costs, operating costs, and maintenance costs.

[Means for Solving the Problems] An elevator apparatus according to the present invention includes a first elevator car and a second elevator car suspended from both ends of a hoisting rope, and a first position for detecting the position of each of the elevator cars. A detecting means, a second position detecting means, a hoisting machine that drives the hoisting rope, and a hoisting machine that is controlled by a position detection signal from the first position detecting means to align the floors of the first elevator car. a hoisting machine control means; a hoisting rope tensioning mechanism for laterally pressing a hoisting rope suspending the second elevator car to move it up and down; and a hoisting rope tensioning mechanism responsive to the first position detection signal. and a hoisting rope tensioning mechanism control means for controlling the floor alignment of the second elevator car.

[Operation] In the present invention, the position of the first elevator car is detected by the first position detection means, and this position detection signal is sent to the hoist control means. Then, the hoisting machine is controlled according to the position, and the floors of the first elevator car are aligned. Next, the position of the second elevator car is detected by the second position detection means, and this position detection signal is sent to the hoisting rope tensioning mechanism control means. Then, the hoisting rope tensioning mechanism is controlled according to the position, and the hoisting rope suspending the second elevator car is pressed in the lateral direction and moves up and down,
The floor alignment of the second elevator car is performed.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

FIG. 1 is an overall sectional view showing an elevator system according to an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a block diagram showing functions of an elevator system according to an embodiment of the present invention. 4 are flowcharts showing the operation of an elevator system according to an embodiment of the present invention.

In the figure, (1) represents two floors, such as the first basement floor and the second basement floor.
The hoistway (2) formed between the strata is the hoistway (1)
), (3) is a hoisting rope wrapped around the sheave (5) of the hoisting machine (4), and (6) is connected to one end of the hoisting rope (3). The first elevator car (7) is the second elevator car connected to the other end of the hoisting rope (3). (8) is a deflection wheel provided on the second elevator car (7) side next to the sheave (5);
(9) is a deflection wheel provided at a predetermined interval below the deflection wheel (8), (10) is a cylinder installed in the machine room (2), and (11) is inside the cylinder (10). It is a plunger that reciprocates in the horizontal direction, and a push wheel (1
2) is attached, and this push wheel (12) is connected to the hoisting rope (3) between the deflection wheel (8) and the deflection wheel (9).
) is pressed in the horizontal direction. In addition, the hoisting rope (3
) is wrapped with a full flap between the sheave (5) and the upper deflection wheel (8).

(13) is the upper floor, (14) is the landing floor of the upper floor (13), (15) is the landing door provided on the first elevator car (6) side of the upper floor (13), (16) is also a landing door provided on the second elevator car (7) side.

In other words, the landing door (15) and the landing door (16) are connected to the hoistway (1).
It is located on the opposite side with the two sides in between. (17) is the lower floor,
(18) is the landing floor of the lower floor (17), (19) is the landing door provided on the first elevator car (6) side of the lower floor (17), and (20) is the landing door of the second elevator car (
7) It is a landing door provided on the side.

In Figure 3, (21) is the first elevator car (6)
The first position detecting means detects the position of the elevator, and is similar to the position detecting means used in general elevators.

(22) is a second position detection means for detecting the position of the second elevator car (7) with respect to the landing floor (14) or the landing floor (18). A mark is attached to the road (1) side. (23) is a hoisting rope tensioning mechanism consisting of a cylinder (10), a plunger (11), and a push wheel (12) provided in the machine room (2). (12) laterally presses the hoisting rope (3) between the deflection wheel (8) and the deflection wheel (9).

(24) is a control circuit including a hoisting machine control means (25) for controlling the hoisting machine (4), a hoisting rope tensioning mechanism control means (26) for controlling the hoisting rope tensioning mechanism (23), and a microcomputer. (27), I1 provided between these
It consists of 0 ports (28). The microcomputer (27) includes a RAM (uniform speed access memory) (
29), CPU (Central Processing Unit>(30), ROM
(Fixed storage device> (31) is incorporated.

Next, the operation of the elevator system of this embodiment configured as described above will be explained based on FIG. 4.

This routine is called to stop the first elevator car (6) at the upper floor (13) and the second elevator car (7) at the lower floor (17).

First, in step S1, the hoist (4) is driven to raise and lower the first elevator car (6) and the second elevator car (7). Then, in step S2, the position of the first elevator car (6) is detected by the first position detecting means (21) and taken in.

After this detection signal is input to the microcomputer (27) of the control circuit (24), in step S3, the floor of the first elevator car (6) and the landing floor (14) of the upper floor (13) are at the same height. It is determined whether the hoisting machine (
The drive of 4) is stopped.

If the heights of the floor of the first elevator car (6) and the landing floor (14) of the upper floor (13) are different in step S3, the process returns to step S1 again and the hoisting machine (4) is moved in the corresponding direction. The first elevator car (6) moves up and down slightly, and its position is detected again in step S2. The first elevator car (6) is located on the landing floor (14) of the upper floor (13).
When the height becomes the same as that, the drive of the hoist (4) is stopped.

At this time, the second elevator car (7) is lowered on the opposite side by the hoisting machine (4), and the landing floor (18) of the lower floor (17) is lowered by the hoisting machine (4).
) has reached almost the same height.

Next, in step S5, the second position detection means (22) detects a positional deviation of the second elevator car (7) with respect to the hall floor (18). This detection signal is then read into the microcomputer (27).

In step S6, the second elevator car (7) is moved to the lower floor (1
If it is the same height as the landing floor (18) of the lower floor (17), the hoisting rope tensioning mechanism (23) is It doesn't work. When the height of the second elevator car (7) is different from the landing floor (18) of the lower floor (17), the hoisting rope tensioning mechanism (23) is activated in step S8. That is, by operating the cylinder (10), the plunger (11
) is expanded and contracted in the horizontal direction to change the pressing force of the push cart (12) on the hoisting rope (3). Then, the hoisting rope (
3), the length in the height direction changes depending on the degree of pressing force of the push cart (12).

Specifically, when the floor of the first elevator car (7) is above the opposing landing floor (18), the plunger (11) is arched to the right by a predetermined amount, thereby causing the winding. The upper rope (3) is stretched downward, and the second elevator car (7) descends by that amount and returns to step S5. When the upper rope (3) is accurately adjusted to the height of the landing floor (18), the hoisting rope is tensioned. The operation of mechanism (23) is stopped. on the other hand,
When the second elevator car (7) is located below the opposing landing floor (18), the plunger (11) is projected leftward by a predetermined amount, thereby causing the hoisting rope (3
) is pulled up, the second elevator car (7) rises by that amount and returns to step S5, and when it is accurately aligned with the height of the landing floor (18), the hoisting rope tensioning mechanism (23) is activated. will be stopped.

As a result, when the first elevator car (6) and the second elevator car (7) stop at each landing floor, the door of the first elevator car (6), the opposite landing door (15),
The door of the second elevator car (7) and the hall door (20) opposite thereto are all opened, and the hall floor (14) and the hall floor (1
8) Passengers get on and off at the same time. When the boarding and alighting are completed, all of the above-mentioned layers are closed, and the first elevator car (6) is closed.
At the same time, the second elevator car (7) starts moving up and down in the opposite direction, and thereafter lands on the next floor in the same manner as described above.

In this way, the elevator system of the above embodiment has a first elevator car (6) suspended from both ends of the hoisting rope (3).
and a second elevator car (7), and a first position detection means (21) for detecting the position of each of the elevator cars.
and a second position detection means (22), and the hoisting rope (3
), a hoisting machine (4) that drives the first position detecting means (
a hoisting machine control means (25) for controlling the hoisting machine (4) according to the position detection signal of 21) to align the first elevator car (6); and a hoisting machine control means (25) for suspending the second elevator car (7). a hoisting rope tensioning mechanism (23) that presses the hoisting rope (3) in the lateral direction to move it up and down; 23) and a hoisting rope tensioning mechanism control means (26) for aligning the floors of the second elevator car (7).

Therefore, according to the above embodiment, the first position detection means (
After the hoisting machine (4) is controlled in response to the position detection signal of the second position detection means (21) and the first elevator car (6) stops at a predetermined landing floor, the hoisting machine (4) is controlled in response to the position detection signal of the second position detection means (22). The hoisting rope tensioning mechanism (23) is then controlled to align the floors of the second elevator car (7). With this, 1
Each elevator is equipped with two elevator cars, allowing passengers to get on and off at the same time, improving transportation capacity and reducing installation space. Further, even if the hoisting rope (3) stretches during use, the floors are aligned each time the passenger lands on the floor, so passengers can safely board and exit the vehicle.

Furthermore, installation costs can be reduced because the length of the hoisting rope (3) can be easily adjusted during installation, and operating costs can be reduced because two elevator cars can be raised and lowered with one hoisting machine (4). Since there is no need to take precautions (truncation) of the hoisting rope (3) during use, maintenance costs can be reduced.

By the way, although the above embodiment shows the case where it is applied to two floors, upper and lower, the present invention is not limited to this, and can be applied to a structure with three or more floors as well. Can be applied. However, as the number of landing floors increases, both elevator cars start going up and down at the same time, even though the number of passengers at each landing is different, which increases the waiting time after boarding and alighting, which can lead to frustration. Therefore, it is desirable to apply it to two-story floors.

In the above embodiment, the landing doors of the two elevator cars are provided on opposing sides across the hoistway (1), but the present invention is not limited to this. Instead, they may be provided on the same side or on two perpendicular sides.

[Effects of the Invention] As described above, the elevator apparatus of the present invention is provided with a hoisting machine and a hoisting rope tensioning mechanism, and the hoisting machine and hoisting rope are tensioned according to the position detection signal of the elevator car position detection means. By controlling the tension mechanism, two
Since two elevator cars are provided so that passengers can get on and off at the same time, transportation capacity can be improved and installation space can be reduced. Further, even if the hoisting rope stretches during use, the floors are aligned each time the passenger lands on the floor, so passengers can board and exit the vehicle safely. Furthermore, installation costs can be reduced because the length of the hoisting rope can be easily adjusted during installation, and operating costs can be reduced by being able to raise and lower two elevator cars with one hoisting machine. Maintenance costs can be reduced because there is no need to take measures against rope elongation (truncation).

[Brief explanation of the drawing]

FIG. 1 is an overall sectional view showing an elevator system according to an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a block diagram showing functions of an elevator system according to an embodiment of the present invention. 4 are flowcharts showing the operation of an elevator system according to an embodiment of the present invention. In the figure, 3: Hoisting rope 4: Hoisting machine 6: First elevator car 7: Second elevator car 21: First position detection means 22: Second position detection means 23: Hoisting rope tension mechanism 25: Hoisting Machine control means 26 = winding seven rope tensioning mechanism control means. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. Agent: Patent Attorney Masuo Oono and 2 others 7.2nd Elm＼-Yugako

Claims (1)

[Scope of Claims] A first elevator car suspended from one end of the hoisting rope; a second elevator car suspended from the other end of the hoisting rope; a first elevator car for detecting the position of the first elevator car; a position detection means; a second position detection means for detecting the position of the second elevator car; a hoist for driving the hoisting rope; and a hoist for driving the hoist by a position detection signal from the first position detection means. a hoisting machine control means for controlling and aligning the first elevator car; and a hoisting rope tensioner for pressing the hoisting rope suspending the second elevator car to move the second elevator car up and down. An elevator apparatus comprising: a mechanism; and a hoisting rope tensioning mechanism control means for controlling the hoisting rope tensioning mechanism based on the second position detection signal and performing floor alignment of the second elevator car.