WO2002094701A1

WO2002094701A1 - Elevator apparatus

Info

Publication number: WO2002094701A1
Application number: PCT/JP2001/004374
Authority: WO
Inventors: Masami Nomura
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2001-05-24
Filing date: 2001-05-24
Publication date: 2002-11-28
Also published as: DE60132372T2; DE60132372D1; CN1270957C; JPWO2002094701A1; EP1396456A1; EP1396456A4; CN1440363A; EP1396456B1

Abstract

An elevator apparatus wherein a car (5) and a balance weight (6) are suspended by a main rope (4). The driving force from a driving device (31) is transmitted to the balance weight (6) through a driving rope (29). The lifting and lowering of the balance weight (6) causes the lifting and lowering of the car (5). The driving rope (29) is entrained around a plurality of balance-weight-associated sheaves (21-24) mounted on the balance weight (6), upper-shaft-region-associated sheaves (25, 26) disposed in the upper region of a shaft (1), and lower-shaft region-associated sheaves (27, 28) disposed in the lower region of the shaft (1). All of the weight-associated sheaves (21-24) are coaxially disposed in the upper region of the balance weight (6).

Description

Description Elevator equipment Technical field

The present invention relates to an elevator apparatus having a main rope for suspending a car and a counterweight, and a drive rope for transmitting a driving force of a driving device to the counterweight to raise and lower the car and the counterweight. is there. '' Background technology

FIG. 12 is a schematic configuration diagram showing a conventional elevator apparatus similar to that shown in, for example, EP 07310 52 A1. In the figure, first and second rotatable car suspension wheels 2 and 3 are arranged above a hoistway 1. A main rope 4 is wound around the first and second car hanging wheels 2 and 3. The car 5 and the counterweight 6 are suspended in the hoistway 1 by the main rope 4. The mouth-to-mouth arrangement of the main rope 4 is 1: 1 mouth-to-bing.

Above the counterweight 6, a rotatable upper weight sheave 7 is mounted. At the lower part of the counterweight 6 is mounted a rotatable lower weight sheave 8. Above the hoistway 1, a rotatable upper hoistway sheave 9 is disposed. A rotatable lower hoistway sheave 10 is arranged below the hoistway 1.

A drive rope 11 is wound around the upper weight sheave 7, the upper hoistway sheave 9, the lower shaft sheave 10 and the lower weight sheave 8. One end (upper end) of the driving rope 11 is connected to the upper part of the hoistway 1. At the other end (lower end) of the drive port 1 1, a tensioning weight 1 2 that gives tension to the drive rope 11 is suspended. C The drive port arrangement of the drive port 1 1 2: One roving.

The lower hoistway sheave 10 is connected to a drive device (not shown) for raising and lowering the counterweight 6 via a drive rope 11.

In such an elevator apparatus, the balance weight 6 is raised and lowered via the drive rope 1'1 by rotating the lower hoistway side sheave 10 by the drive device. This The car 5 connected to the counterweight 6 via the main rope 4 is moved up and down the hoistway 1 along a guide rail (not shown).

However, in the conventional elevator apparatus configured as described above, the upper weight sheave 7 is disposed above the counterweight 6, and the lower weight sheave 8 below the counterweight 6. Since they are arranged, the dimension of the counterweight 6 in the height direction is increased, and as a result, the dimension of the hoistway 1 in the height direction is increased. In particular, when an emergency stop device is mounted on the counterweight 6, the problem becomes remarkable. Disclosure of the invention

The present invention has been made to solve the above-described problems, and can suppress an increase in the height of a counterweight, and can effectively utilize the space in a building. The purpose is to obtain an overnight device.

The elevator apparatus according to the present invention includes a hoistway, a rotatable car hoist placed above the hoistway, a main rope wound around the car hoist, and a hoistway. A car and a counterweight suspended on the counterweight; a plurality of rotatable weight sheaves mounted on the counterweight; a plurality of rotatable hoistway sides respectively disposed at the upper and lower portions of the hoistway. By rotating at least one of the sheave, the sheave on the weight side and the sheave on the hoistway, and the sheave on the hoistway by rotating at least one of the sheave on the sheave and the sheave on the hoistway, the balance is established via the drive rope. A drive for raising and lowering the weight is provided, and all weight sheaves are located on either the upper or lower part of the counterweight. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is an explanatory diagram for explaining a rope arrangement of a drive rope in FIG. 1, and FIG. 3 is a developed view of FIG. ,

4 is a side view showing an example of a specific layout of the elevator apparatus of FIG. 1, FIG. 5 is a plan view showing the elevator apparatus of FIG.

FIG. 6 is a side view showing the positional relationship between the weight sheave and the hoistway sheave of FIG. 4, FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention,

FIG. 8 is an explanatory diagram for explaining a mouth rope arrangement of a drive rope of an elevator apparatus according to Embodiment 3 of the present invention;

Figure 9 is a development of Figure 8,

FIG. 10 is an explanatory diagram for explaining a rope arrangement of a drive rope of an elevator apparatus according to Embodiment 4 of the present invention;

Figure 11 is a development of Figure 10,

FIG. 12 is a schematic configuration diagram showing an example of a conventional elevator apparatus. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1

FIG. 1 is a schematic configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, first and second rotatable car hoists 2: 3 are arranged above the hoistway 1. A main rope 4 is wound around the first and second car hanging wheels 2, 3. The car 5 and the counterweight 6 are suspended in the hoistway 1 by the main rope 4. The mouth arrangement of the main rope 4 is 1: 1 mouth and bing.

Above the counterweight 6, first to fourth weight sheaves 21 to 24 are mounted. The first to fourth weight sheaves 21 to 24 are arranged coaxially, and are each independently rotatable.

Above the hoistway 1, first and second upper hoistway sheaves 25, 26 are arranged. The first and second upper hoistway sheaves 25, 26 are arranged coaxially and can rotate independently of each other.

In the lower part of the hoistway 1, first and second lower hoistway sheaves 27, 28 are arranged. The first and second lower hoistway sheaves 27, 28 are coaxially arranged and can rotate independently of each other.

First to fourth weight sheaves 21 to 24, first and second upper hoistway sheaves 2

5, 26, and the first and second lower hoistway sheaves 27, 28 9 is wound. One end (upper end) of the drive rope 29 is connected to the upper part of the hoistway 1. At the other end (lower end) of the drive rope 29, a tension 30 that gives tension to the drive rope 29 is suspended. The mouth rope arrangement of the drive rope 29 is 4: 1 bing.

The first upper hoistway sheave 25 is connected via a drive rope 29 to a rotating shaft of a driving device 31 for raising and lowering the counterweight 6. That is, the first upper hoistway-side sheave 25 also serves as the drive sheave of the drive device 31. Further, the first car suspension wheel 2 is provided with a brake device 32.

Next, FIG. 2 is an explanatory diagram for explaining the rope arrangement of the driving rope 29 of FIG. 1, and FIG. 3 is a developed view of FIG. From one end of the drive rope 29, the first weight side sheave 21, the first upper shaft side sheave 25, the second weight side sheave 22, the second upper shaft side sheave 26, the first lower hoistway sheave 27, the third weight sheave 23, the second lower hoistway sheave 28 and the fourth weight sheave 24 O

Next, FIG. 4 is a side view showing an example of a specific layout of the elevator apparatus of FIG. 1, FIG. 5 is a plan view of the elevator apparatus of FIG. 4, and FIG. It is the side view seen from. FIG. 6 is a side view showing the positional relationship between the weight sheaves 21 to 24 and the hoistway sheaves 25 to 28 in FIG.

As shown in FIG. 5, the weight sheaves 21 to 24 and the hoistway sheaves 25 to 28 have, when projected vertically, the center of rotation with respect to the center line 6 c of the counterweight 6. They are arranged to cross diagonally. Further, in order to reduce the overlap between the car 5 and the drive unit 31 when projected vertically, a thin type hoist having a short axial dimension is used as the drive unit 31.

Further, the rotation axes of all the weight sheaves 21 to 24 and the rotation axes of all the hoistway sheaves 25 to 28 are arranged so as to overlap each other when projected vertically. That is, the upper hoistway sheaves 25 and 26 are disposed directly above the weight sheaves 21 and 24, and the lower hoistway sheaves 27 and 2 immediately below the weight sheaves 21 and 24. 8 are located. In FIG. 5, a car guide rail 33 for guiding the elevator of the car 5 and a counterweight guide rail 34 for guiding the lifting of the counterweight 6 are installed in the hoistway 1. Have been. The guide rails 33 and 34 are fixed in the hoistway 1 by a plurality of rail brackets 35.

In addition, landing doors 36 are provided on each landing floor. The car 5 is provided with a car door 37 facing the landing door 36.

In such an elevator device, since all the weight sheaves 21 to 24 are disposed above the counterweight 6, an increase in the height of the counterweight 6 can be suppressed, and The height of the road 1 can be reduced. As a result, the space in the building can be used effectively.

Further, since the first to fourth weight sheaves 21 to 24 are arranged coaxially, the configuration can be simplified and the number of parts can be reduced.

Further, the first and second upper hoistway sheaves 25, 26 are coaxially arranged, and the first and second lower hoistway sheaves 27, 28 are coaxially arranged. Therefore, the configuration can be further simplified and the number of parts can be reduced.

Furthermore, the rotation axes of all the weight sheaves 21 to 24 and the rotation axes of all the hoistway sheaves 25 to 28 are arranged so as to overlap each other when projected vertically. Therefore, the space in the hoistway 1 can be effectively used.

Further, since the first car suspension wheel 2 is provided with the brake device 32, even if the drive rope 29 is broken, the car 5 can be prevented from dropping. Therefore, the number of drive ropes 29 can be reduced to one. Embodiment 2

Next, FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the weight sheaves 21 to 24 and the hoistway sheaves 25 to 28 are arranged such that, when projected vertically, the center of rotation extends parallel to the center line 6 c of the counterweight 6. Are located. In addition, as the driving device 38, a vertically long type winding machine having a long axial dimension is used. Other configurations are the same as those of the first embodiment.

Even in such an elevator system, the layout on the driving side can be made compact, and the space in the building can be used effectively. Embodiment 3.

Next, FIG. 8 is an explanatory diagram for explaining a mouth rope arrangement of a drive rope of an elevator apparatus according to Embodiment 3 of the present invention, and FIG. 9 is a developed view of FIG. The rope arrangement of the drive rope according to the third embodiment is a 2: 1 roving.

In the figure, first and second weight sheaves 4 1, 4 2 are mounted above the counterweight 6. The first and second weight sheaves 41, 42 are coaxially arranged and can rotate independently of each other. Above the hoistway 1, a rotatable upper hoistway-side sheave 43 is arranged. A rotatable lower hoistway sheave 44 is arranged below the hoistway 1.

A drive rope 29 is wound around the first and second weight sheaves 41, 42, the upper hoistway sheave 43, and the lower hoistway sheave 44. One end (upper end) of the drive rope 29 is connected to the upper part of the hoistway 1. At the other end (lower end) of the drive rope 29, a tension 30 that gives tension to the drive rope 29 is suspended.

The drive rope 29 is wound around the first weight sheave 41, the upper hoistway sheave 43, the lower hoistway sheave 44, and the second weight sheave 42 from one end thereof. It has been done.

In this way, even when the drive rope 29 is arranged in the form of one-by-one bing, the first and second weight sheaves 4 1 and 4 2 can be arranged above the counterweight 6. However, an increase in the height of the counterweight 6 can be suppressed, and the height of the hoistway 1 can be reduced. In addition, by arranging the first and second weight sheaves 41, 42 coaxially, the configuration can be simplified and the number of parts can be reduced.

Here, when the upper hoistway sheave 43, which also serves as a drive sheave, is rotated in the direction of the arrow in the figure, the first and second weight sheaves 41, 42 are rotated in the same direction. However, the rotation speed of the first and second weight sheaves 41, 42 may be slightly different due to the extension of the drive rope 29. Also, when gravity W g acts on the tension weight 30 and the driving ship generates torque T, the tension acting on the first weight sheave 41 becomes

+ T, the tension acting on the second weight sheave 42 is W g — Τ. Thus, while the rotation directions of the first and second weight sheaves 41, 42 are the same, the rotation speeds of the first and second weight sheaves 41, 42 are slightly different. In some cases, the tension acting on the first and second weight sheaves 41, 42 is also different, so that the first and second weight sheaves 41, 42 are not fixed by the rope arrangement. Need to be configured as separate parts without being integrated. Embodiment 4.

Next, FIG. 1 0 explanatory view for explaining a mouth one flop arrangement of the drive rope Jer base Isseki device according to a fourth embodiment of the present invention, _c 1 1 is an exploded view of FIG. 1 0 This The rope arrangement of the drive rope according to the third embodiment is a 3: 1 roving.

In the figure, first and second weight sheaves 5 1, 5 2 are mounted above the counterweight 6. The first and second weight sheaves 51, 52 are coaxially arranged and can rotate independently of each other.

Above the hoistway 1, first and second upper hoistway sheaves 53, 54 are arranged. The first and second upper hoistway sheaves 53, 54 are arranged coaxially and can be independently rotated.

Below the hoistway 1, first and second lower hoistway sheaves 55, 56 are arranged. The first and second lower hoistway sheaves 55, 56 are arranged coaxially and can rotate independently.

First and second weight sheaves 51, 52, first and second upper hoistway sheaves 53: 54, and first and second lower hoistway sheaves 55, 56 Has a drive rope 29 wound around it. Both ends of the drive rope 29 are connected to the counterweight 6 c. The first and second lower hoistway sheaves 55, 56 have tension weights 3 that apply tension to the drive rope 29. 0 is suspended.

From one end of the drive rope 29, the first upper hoistway sheave 53, the first weight sheave 51, the second upper hoistway sheave 54, the first lower hoistway side The sheave 55, the second weight sheave 52, and the second lower hoistway sheave 56 are wound in this order. In this way, even when the drive rope 29 is arranged in a three-to-one bing, the first and second weight sheaves 51, 52 can be arranged above the counterweight 6 by arranging them. However, an increase in the height of the counterweight 6 can be suppressed, and the height of the hoistway 1 can be reduced. Also, by arranging the first and second weight sheaves 51, 52 coaxially, the configuration can be simplified and the number of parts can be reduced. In the above example, the drive device is connected to the upper hoistway sheave. However, the drive device may be connected to another sheave around which the drive rope is wound. That is, another sheave may be used as the drive sheave. Therefore, the driving device may be mounted on the lower part of the hoistway or on the counterweight.

Further, in the above example, the weight side sheave is mounted only on the upper part of the counterweight, but may be mounted only on the lower part.

Furthermore, in the above example, all the weight sheaves are arranged coaxially, but a plurality of weight sheaves may be arranged side by side above or below the counterweight, and the height of the counterweight is Increase can be suppressed.

Furthermore, a flat rope having a flat cross section may be used as the drive rope. In this case, the sheave diameter can be reduced, and the overall size can be reduced.

Further, as the driving rope, for example, a synthetic fiber rope using a synthetic tree j§i fiber such as aramid fiber may be used. Synthetic fiber rope has high coefficient of friction and excellent flexibility. For this reason, the sheave diameter can be reduced and the overall size can be reduced.

Further, the rope arrangement of the driving rope is not limited to the above example, and may be any N: one mouthful of one bing (where N is a natural number of 2 or more). In other words, by increasing the N while suppressing the height of the counterweight, the drive unit can be made small and inexpensive, and the space in the building can be used effectively.

Here, assuming that the mouth rope arrangement of the driving rope is N: 1 roving, the number of weight sheaves is N when N is even and N— 1 when N is odd c The number of sheaves on the upper shaft is N / 2 when N is an even number, and N-one when N is an odd number. Similarly, the number of lower hoistway sheaves is N / 2 when N is even and N-1 when N is odd.

In addition, when N is set to a large value, the arrangement of the driving ropes becomes complicated. Therefore, it is desirable to reduce the number of driving ropes and to make the arrangement as a whole as simple as possible. For this purpose, it is preferable to provide a brake device on the main rope side as described in the first embodiment.

Claims

The scope of the claims

1. The hoistway,

A rotatable car suspension car located at the top of the hoistway,

The main rope wrapped around the above car suspension car,

A car and a counterweight suspended in the hoistway by the main rope; a plurality of rotatable weight sheaves mounted on the counterweight;

A plurality of rotatable hoistways respectively disposed at the upper and lower portions of the hoistway; the weight sheave; a drive port wound around the hoistway sheave; and the weight sheave. And a driving device that raises and lowers the counterweight via the drive rope by rotating at least one of the hoistway sheaves. An elevator device located at one of the top and bottom.

2. The elevator apparatus according to claim 1, wherein all the weight sheaves are coaxially arranged.

3. The drive ropes are arranged in N: 1 rovings (N is a natural number of 2 or more). The number of the weight sheaves is N when the N is even and N when the N is odd. — The elevator apparatus according to claim 1, wherein the number is one.

4. The elevator apparatus according to claim 1, wherein a plurality of the hoistway sheaves are coaxially arranged on at least one of an upper part and a lower part of the hoistway.

5. The elevator system according to claim 1, wherein the rotation axes of all the weight sheaves and the rotation axes of all the hoistway sheaves are arranged so as to overlap each other when projected vertically. apparatus.

6. The claim wherein the driving device is disposed at one of an upper portion and a lower portion of the hoistway, and a rotating shaft of the driving device is connected to one of the hoistway sheaves. The elevator device according to 1 above.

7. The elevator apparatus according to claim 1, wherein the drive rope is a flat rope having a flat cross-sectional shape.

8. The elevator apparatus according to claim 1, wherein the drive rope is a synthetic fiber rope.

9. The elevator apparatus according to claim 1, wherein the car suspension car is provided with a brake device.