WO2015025397A1

WO2015025397A1 - Elevator device

Info

Publication number: WO2015025397A1
Application number: PCT/JP2013/072392
Authority: WO
Inventors: 啓太島林; 良直高橋
Original assignee: 三菱電機株式会社
Priority date: 2013-08-22
Filing date: 2013-08-22
Publication date: 2015-02-26
Also published as: CN105473488A; JPWO2015025397A1

Abstract

An elevator device wherein a cage and a counterweight are suspended by first and second suspension bodies and raised and lowered by first and second hoisting machines. A second pulley in the second hoisting machine is arranged so as to overlap at least part of a first pulley in the first hoisting machine, as viewed from above. A diverter pulley is arranged between the first and second pulleys. The diameter of the diverter pulley is greater than the diameter of the first pulley and the diameter of the second pulley. A cage-side section of the second suspension body and a counterweight-side section of the second suspension body are in contact with the outer peripheral surface of the diverter pulley and, as a result, the space between the cage-side section and the counterweight-side section is wider.

Description

Elevator equipment

This invention relates to an elevator apparatus that raises and lowers a pair of cars and counterweights using a plurality of hoisting machines.

Generally, in a machine room-less elevator, it is required to arrange equipment such as a hoisting machine and a control panel in a narrow hoistway. In particular, when the load and weight of the car increase, the size of the hoisting machine increases, so that it is difficult to arrange the hoisting machine in the hoistway. On the other hand, a method has been proposed in which a plurality of small hoisting machines are synchronized to raise and lower a pair of cars and a counterweight.

In such a conventional elevator apparatus, two identical hoisting machines are arranged one above the other. Further, by offsetting these hoisting machines back and forth by the thickness of the sheave, interference between main ropes wound around each sheave is avoided. Furthermore, the structure which arrange | positions two hoisting machines from which a sheave diameter differs in the up-down direction and avoids interference between main ropes is also proposed (for example, refer patent document 1).

Also, in the conventional elevator hoisting device, the second sheave is disposed directly below the first sheave, and the deflector is disposed obliquely below the second sheave. Further, the axial dimension (thickness) of the first sheave, the second sheave, and the deflector is the same. Further, a plurality of main ropes are wound around the first sheave and the second sheave. And in order to avoid interference between main ropes, the main rope is wound around the groove | channel of the position where axial directions differ in a 1st sheave and a 2nd sheave (for example, refer patent document 2).

International Publication No. 2006/070437 International Publication No. 2010/107423

In the configuration using two identical hoisting machines in the conventional elevator apparatus disclosed in Patent Document 1, the hoisting machine is offset forward and backward, so that the horizontal occupation space of the hoisting machine increases. In addition, in the configuration using two hoisting machines having different sheave diameters, the same hoisting machine cannot be used, and thus the cost increases. Furthermore, in the conventional hoisting device shown in Patent Document 2, the axial dimensions of the first and second sheaves are equivalent to the axial dimension of the sheave when one hoist is used. As a result, the horizontal space occupied by the hoisting machine increases.

The present invention has been made in order to solve the above-described problems, and while using two hoisting machines, the horizontal occupation space of the hoisting machine can be sufficiently reduced, and the cost can be reduced. An object of the present invention is to obtain an elevator apparatus capable of suppressing the above.

An elevator apparatus according to the present invention includes a first hoisting machine having a first sheave, and a second leash arranged so as to at least partially overlap the first sheave as viewed from directly above. A second hoisting machine having a car, a first suspension wound around a first sheave, a second suspension wound around a second sheave, and a first The suspension and the second suspension are suspended by the first hoisting machine and the second hoisting machine, and are provided with a car and a counterweight, A sled wheel is disposed between the two sheaves, and the diameter of the sled wheel is larger than the diameters of the first sheave and the second sheave, and the second suspension The car-side part that is the car-side part of the second sheave and the counterweight-side part that is the part of the second suspension that is the counterweight-side part of the second sheave In contact with the surface, thereby spacing the cage-side portion and the counterweight-side portion is expanded.

In the elevator apparatus according to the present invention, a deflector is disposed between the first sheave and the second sheave, and the diameter of the deflector is the diameter of the first sheave and the second sheave. A car-side portion which is larger than the diameter of the car and which is the car-side part of the second suspension body relative to the second sheave; and a part of the second suspension body which is closer to the counterweight than the second sheave The counterweight side part is in contact with the outer peripheral surface of the deflector wheel, and this increases the distance between the car side part and the counterweight side part, so that two hoisting machines are used. The horizontal space occupied by the hoisting machine can be sufficiently reduced and the cost can be reduced.

1 is a schematic configuration diagram showing a machine room-less elevator according to Embodiment 1 of the present invention. It is a side view which shows the 1st hoisting machine of FIG. 1, a 2nd hoisting machine, and a deflecting wheel. It is a front view which shows the support structure of the 1st hoisting machine of FIG. 1, a 2nd hoisting machine, and a deflector. It is a front view which shows the 1st hoisting machine of FIG. It is a schematic block diagram which shows the machine room less elevator by Embodiment 2 of this invention. It is a front view which shows the support structure of the 1st hoisting machine of FIG. 5, a 2nd hoisting machine, and a deflector.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a schematic configuration diagram showing a machine room-less elevator according to Embodiment 1 of the present invention. In the figure, a first hoisting machine 2, a second hoisting machine 3, and a deflecting wheel 4 are arranged at the lower part of the hoistway 1. The second hoisting machine 3 is arranged directly below the first hoisting machine 2 with a space from the first hoisting machine 2. The first hoisting machine 2 is arranged on the intermediate side of the hoistway 1 with respect to the second hoisting machine 3.

The first hoisting machine 2 has a first sheave 5 and a first hoisting machine main body 6. The first hoisting machine main body 6 has a first motor that rotates the first sheave 5 and a first brake that brakes the rotation of the first sheave 5.

The second hoisting machine 3 has a second sheave 7 and a second hoisting machine main body 8. The second hoisting machine main body 8 includes a second motor that rotates the second sheave 7 and a second brake that brakes the rotation of the second sheave 7.

As the first and

second hoisting machines

2 and 3, a thin hoisting machine having an axial dimension smaller than a dimension in a direction perpendicular to the axial direction is used. As the first and

second hoisting machines

2 and 3, hoisting machines having the same size and the same capacity are used. For this reason, the diameter of the first sheave 5 is the same as the diameter of the second sheave 7, and the axial dimension (thickness dimension) of the first sheave 5 is that of the second sheave 7. It is the same as the axial dimension.

The deflecting wheel 4 is disposed between the first sheave 5 and the second sheave 7. That is, the deflecting wheel 4 is disposed directly below the first sheave 5 and directly above the second sheave 7. The diameter of the deflector wheel 4 is larger than the diameter of the first sheave 5 and the diameter of the second sheave 7.

The second sheave 7 is arranged so as to at least partially overlap the first sheave 5 when viewed from directly above. In this example, the second sheave 7 is arranged so as to overlap the first sheave 5 as viewed from directly above. Further, in this example, the first sheave 5, the second sheave 7, and the deflector 4 are arranged so that their rotational axes overlap when viewed from directly above.

A plurality of first suspension bodies 9 are wound around the first sheave 5. A plurality of second suspension bodies 10 are wound around the second sheave 7. As the first and

second suspension bodies

9 and 10, a plurality of ropes or a plurality of belts are used, respectively. In FIG. 1, the second suspension body 10 is indicated by a two-dot chain line in order to distinguish from the first suspension body 9.

The car 11 and the counterweight 12 are suspended in the hoistway 1 by the first and

second suspension bodies

9 and 10. The car 11 and the counterweight 12 are moved up and down in the hoistway 1 by driving the first and

second hoisting machines

2 and 3 in synchronization. Below the car 11, first and second

car suspension wheels

13a and 13b are provided. On the upper part of the counterweight 12, a counterweight suspension wheel 14 is provided.

In the upper part of the hoistway 1, a car return wheel 15 and a counterweight return wheel 16 are provided. The first ends (car-side ends) of the first and

second suspension bodies

9 and 10 are connected to a first rope stop 17 provided at the upper part of the hoistway 1. The second ends (the counterweight side ends) of the first and

second suspension bodies

9 and 10 are connected to a second rope stop 18 provided at the upper part of the hoistway 1.

The first suspension body 9 includes, in order from the first end side, a first car suspension wheel 13a, a second car suspension wheel 13b, a car return wheel 15, a first sheave 5, and a counterweight return wheel. 16 and the counterweight suspension wheel 14 are wound around to reach the second end.

The second suspension body 10 includes, in order from the first end, the first car suspension wheel 13a, the second car suspension wheel 13b, the car return wheel 15, the second sheave 7, and the counterweight return wheel. 16 and the counterweight suspension wheel 14 are wound around to reach the second end. That is, the car 11 and the counterweight 12 are suspended by a 2: 1 roping method.

A car-side part 10a that is a part closer to the car 11 than the second sheave 7 of the second suspension body 10, and a part that is closer to the counterweight 12 than the second sheave 7 of the second suspension 10 The counterweight side portion 10b is partially in contact with the outer peripheral surface of the deflector wheel 4. Thereby, the track | orbit of the 2nd suspension body 10 changes with the deflecting wheel 4, and the space | interval of the cage | basket | car side part 10a and the counterweight side part 10b is expanded.

The first sheave 5 is disposed between the car side portion 10a and the counterweight side portion 10b. The distance between the car-side portion 10a and the counterweight-side portion 10b is widened by the deflector wheel 4 so that the outer surface of the first sheave 5 is between the car-side portion 10a and the counterweight-side portion 10b. The distance has also been expanded. This prevents the portion of the second suspension body 10 that passes through both sides of the first sheave 5 from interfering with the first suspension body 9.

In FIG. 1, since the height dimension of the hoistway 1 is shown in a reduced form for simplicity, the

hoisting machines

2 and 3, the car 11, and the counterweight 12 are shown at substantially the same height. Actually, the

hoisting machines

2 and 3 and the car 11 or the counterweight 12 are arranged below the position in FIG. Further, the

hoisting machines

2 and 3 and the counterweight 12 are seen from directly above, between the rear surface of the car 11 and the hoistway wall, or between the left and right side surfaces of the car 11 and the hoistway wall. Be placed.

FIG. 2 is a side view showing the first hoisting machine 2, the second hoisting machine 3, and the deflecting wheel 4 of FIG. In FIG. 2, the second suspension body 10 appears to interfere with the first suspension body 9 in the vicinity of the first sheave 5. However, as shown in FIG. 1, in the vicinity of the first sheave 5, the second suspension body 10 is in the width direction (axial direction) of the first sheave 5 with respect to the first suspension body 9. Perpendicular to the horizontal direction).

Also, the first and

second suspension bodies

9 and 10 are wound around the hoistway 1 at different positions in the axial direction of the counterweight wheel 16. Similarly, the first and

second suspension bodies

9 and 10 are wound around the hoistway 1 at different positions in the axial direction of the car return wheel 15.

FIG. 3 is a front view showing a support structure for the first hoisting machine 2, the second hoisting machine 3 and the deflector 4 shown in FIG. A pit base 19 is fixed to the pit bottom surface 1 a of the hoistway 1. On the first end portion (left end portion in FIG. 3) of the pit base 19, a raising base 20 is fixed. A hoisting machine mounting frame 21 is fixed on the raising base 20. The hoisting machine mounting frame 21 has vertical left and right vertical columns.

The first hoisting machine 2 is attached to the upper part of the hoisting machine mounting frame 21. The second hoisting machine 3 is attached to the lower part of the hoisting machine mounting frame 21. With such a support structure, the first and

second hoisting machines

2 and 3 are disposed with a space between the pit bottom surface 1a.

The deflecting wheel 4 is attached to the intermediate portion of the hoisting machine mounting frame 21 via the deflecting wheel mounting frame 22. That is, the first hoisting machine 2, the second hoisting machine 3, and the deflector wheel 4 are arranged in series in the vertical direction in the hoisting machine mounting frame 21.

A first counterweight guide rail 23 a is erected on an intermediate portion of the pit base 19. On the second end portion (right end portion in FIG. 3) of the pit base 19, a second counterweight guide rail 23b is erected. The first and second

counterweight guide rails

23a and 23b are arranged parallel to each other and vertically.

The counterweight 12 is disposed between the first and second

counterweight guide rails

23a and 23b, and is guided by the first and second

counterweight guide rails

23a and 23b to move inside the hoistway 1. Go up and down.

FIG. 4 is a front view showing the first hoisting machine 2 of FIG. 3, and the configuration of the second hoisting machine 3 is the same as this. The hoisting machine main body 6 is attached to the hoisting machine mounting frame 21 via the hoisting machine upper beam 24 and a pair of fixing

brackets

25a and 25b.

The hoisting machine upper beam 24 is fixed horizontally between the vertical columns of the hoisting machine mounting frame 21. The fixing

brackets

25 a and 25 b are respectively fixed to the vertical columns of the hoisting machine mounting frame 21 below the hoisting machine upper beam 24. Mounting holes (not shown) for fixing to the hoisting machine mounting frame 21 are provided in both ends of the hoisting machine upper beam 24 and the fixing

brackets

25a and 25b, respectively.

Between the hoisting machine upper beam 24 and the upper end of the hoisting machine main body 6, a pair of upper

vibration isolating members

26a and 26b are interposed. A pair of connecting

portions

6 a and 6 b are provided at the lower portion of the hoisting machine body 6. A lower vibration isolating member 27a is interposed between the fixture 25a and the connecting portion 6a. A lower vibration isolation member 27b is interposed between the fixing bracket 25b and the connecting portion 6b. Anti-vibration rubber is used as the

anti-vibration members

26a, 26b, 27a, 27b.

The hoisting machine main body 6 is suspended from the hoisting machine upper beam 24 and the fixing

brackets

25a and 25b via vibration-

proof members

26a, 26b, 27a, and 27b.

In such an elevator apparatus, the first and

second sheaves

5 and 7 overlap when the first and

second hoisting machines

2 and 3 are projected perpendicularly to the horizontal plane. Since the

hoisting machines

2 and 3 are arranged vertically, the horizontal occupied space of the first and

second hoisting machines

2 and 3 is the same as when only one small-capacity hoisting machine is used. It can be sufficiently reduced.

For this reason, the equipment layout of the entire elevator apparatus can be made the same as when only one hoisting machine is used, and equipment can be shared.

Further, since the second suspension body 10 can avoid interference with the first suspension body 9 by the deflecting wheel 4 having a diameter larger than that of the first and

second sheaves

5 and 7, the first and

second sheaves

5 and 7 can be avoided. The same hoisting machine can be used as the

second hoisting machines

2 and 3, and the cost can be reduced. Moreover, the axial dimension of the 1st and

2nd sheaves

5 and 7 can be suppressed, and the horizontal occupation space of the 1st and

2nd hoisting machines

2 and 3 can be reduced.

Furthermore, since the horizontal space occupied by the first and

second hoisting machines

2 and 3 is small, an existing elevator apparatus using only one large-capacity hoisting machine is used as the first and second hoisting machines with small capacities. The renovation work for renewing the elevator device using the

hoisting machines

2 and 3 can be easily performed.

Furthermore, refurbishment work that increases the capacity and speed by adding another small capacity hoist to the existing elevator system that uses only one small capacity hoist is easy. Can be implemented.

For example, when adding another small-capacity hoisting machine to an existing elevator apparatus that uses only one small-capacity hoisting machine, the diameter of the sheave of the hoisting machine to be added is not necessarily It does not have to be the same as the diameter of the sheave of the hoisting machine. However, also in this case, the diameter of the deflecting wheel is larger than the diameters of the first and second sheaves.

In FIG. 1, the counterweight suspension wheel 14, the basket return wheel 15, and the counterweight return wheel 16 are shown one by one, but the number is not limited to one. For example, two car return cars may be arranged side by side in the horizontal direction.

Embodiment 2. FIG.
5 is a schematic configuration diagram showing a machine room-less elevator according to Embodiment 2 of the present invention. In the second embodiment, the first hoisting machine 2, the second hoisting machine 3, and the deflecting wheel 4 are arranged on the top of the hoistway 1 in the upside down direction with respect to the first embodiment.

The first suspension body 9 is wound around the first car suspension wheel 13a, the second car suspension wheel 13b, the first sheave 5 and the counterweight suspension wheel 14 in order from the first end side. To the second end. The second suspension body 10 is wound around the first car suspension wheel 13a, the second car suspension wheel 13b, the second sheave wheel 7, and the counterweight suspension wheel 14 in order from the first end side. To the second end.

FIG. 6 is a front view showing a support structure for the first hoisting machine 2, the second hoisting machine 3 and the deflector 4 shown in FIG. A machine base 28 is fixed horizontally just below the hoistway ceiling 1b. On the machine base 28, the upper ends of the left and right vertical columns of the hoisting machine mounting frame 21 are fixed. That is, the hoisting machine mounting frame 21 is suspended from the machine base 28. Other configurations are the same as those in the first embodiment.

Thus, also in the elevator apparatus in which the first and

second hoisting machines

2 and 3 are arranged at the top of the hoistway 1, the horizontal occupied space of the first and

second hoisting machines

2 and 3 Can be sufficiently reduced. Further, the same hoisting machine can be used as the first and

second hoisting machines

2 and 3, and the cost can be reduced.

Although the machine room-less elevator is shown in the first and second embodiments, the present invention can also be applied to an elevator apparatus in which the first and

second hoisting machines

2 and 3 are installed in the machine room.
The present invention can also be applied to an elevator apparatus in which three or more hoisting machines are arranged side by side. That is, in addition to the first and

second hoisting machines

2 and 3, for example, a third hoisting machine may be added, or a third and fourth hoisting machines may be added. In this case, a deflector is disposed between the hoisting machines adjacent in the vertical direction. And the diameter of each deflecting wheel is made larger than the diameters of all sheaves and deflecting wheels located on the intermediate side of the hoistway from the deflecting wheel. It is also preferable that all sheaves have the same diameter.
Furthermore, the present invention can also be applied to, for example, a double deck elevator and a one-shaft multi-car elevator in which a plurality of cars are arranged in a common hoistway.

Claims

A first hoisting machine having a first sheave,
A second hoisting machine having a second sheave arranged so as to at least partly overlap the first sheave as viewed from directly above;
A first suspension wound around the first sheave;
A second suspension wound around the second sheave, and suspended by the first suspension and the second suspension, the first hoist and the first suspension Equipped with a car and a counterweight that are raised and lowered by the hoisting machine of No. 2,
A baffle is disposed between the first sheave and the second sheave,
A diameter of the deflector is larger than a diameter of the first sheave and a diameter of the second sheave;
A car-side portion that is the car-side portion of the second suspension body relative to the second sheave, and a portion of the second suspension body that is closer to the counterweight than the second sheave. The certain counterweight side part is in contact with the outer peripheral surface of the deflecting wheel, and thereby the elevator apparatus has an increased distance between the car side part and the counterweight side part.
The first sheave is disposed between the car side portion and the counterweight side portion;
The elevator apparatus according to claim 1, wherein the distance between the outer peripheral surface of the first sheave and the car side portion and the counterweight side portion is increased by the deflecting wheel.
The elevator apparatus according to claim 1 or 2, wherein a diameter of the first sheave and a diameter of the second sheave are the same.
The first sheave, the second sheave, and the deflector are arranged so that their rotational axes overlap when viewed from directly above. The elevator apparatus as described in.
The first and second hoisting machines are disposed at the lower part of the hoistway,
A car side return wheel around which the first and second suspension bodies are wound, and a counterweight-side return wheel around which the first and second suspension bodies are wound, are provided at the upper part of the hoistway. The elevator apparatus according to any one of claims 1 to 4, wherein the elevator apparatus is disposed.
The elevator apparatus according to any one of claims 1 to 5, wherein the first and second hoisting machines are attached to a common hoisting machine mounting frame.