WO2005075335A1

WO2005075335A1 - Elevator

Info

Publication number: WO2005075335A1
Application number: PCT/JP2004/001393
Authority: WO
Inventors: Atsushi Mitsui
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-02-10
Filing date: 2004-02-10
Publication date: 2005-08-18
Also published as: CN1741953A; CN1741953B; EP1714934A4; EP1714934A1; JPWO2005075335A1

Abstract

An elevator has a drive device disposed in the elevator shaft. The drive device is provided with a rotatable drive sheave. In the elevator shaft, a deflector wheel is also disposed with a spacing to the drive sheave. A main rope for suspending a cage and a counterweight is run on the drive sheave and the deflector wheel. The drive device and the deflector wheel are arranged outside the region of the cage in the vertical projection plane of the elevator shaft. Horizontal cross-sectional area of the elevator shaft can be reduced by adjusting the positions of the drive device and the deflector wheel.

Description

Elevator equipment Technical field

The present invention relates to an elevator device (a so-called machine room-less elevator device) in which a driving device (a hoist) for raising and lowering a car and a counterweight is disposed in a hoistway. Background art

Conventionally, in order to reduce the space occupied by the elevator device in a building, a so-called machine roomless elevator device in which a hoist is arranged in a hoistway has been proposed. Patent No.

In the conventional machine-room-less elevator apparatus disclosed in Japanese Patent Publication No. 25593288, the hoist is arranged at the upper part of the hoistway and when the hoistway is vertically projected, It is located outside the area. The main rope for suspending the car and the counterweight is wound around the drive sheave of the hoist. At the bottom of the car, there is a pair of car suspension wheels. In addition, a counterweight lifting wheel is provided above the counterweight. The main rope is wound around one of the cleats at the upper part of the hoistway in the order of each car hoisting wheel, drive sheave, and counterweight hoisting wheel, and reaches the other cleat at the upper part of the hoistway. The car is guided up and down by a pair of car guide rails, and the counterweight is lifted and guided by a pair of counterweight guide rails.

However, in such an elevator system, the main ropes from the drive sheave are directly wound around the car hoist and the counterweight hoist. In addition, the drive sheave must be arranged close to the counterweight lifting wheel, which limits the installation range of the hoisting machine in the hoistway. Usually, a cage guide rail and a counterweight guide rail are located between the car suspension wheel and the counterweight suspension wheel. It is necessary to increase the horizontal cross-sectional area of the hoisting machine, and the above-mentioned limitation on the installation range of the hoisting machine also hinders the reduction of the space in the hoistway. Disclosure of the invention

The present invention has been made to solve the above-described problems, and can expand the installation range of a hoisting machine in a hoistway, and reduce the space in the hoistway. It is an object of the present invention to obtain an elevator device that can perform the operation.

An elevator apparatus according to the present invention has a car capable of ascending and descending in a hoistway, a counterweight, a drive sheep, and is disposed outside the area of the car in a vertical projection plane of the hoistway to raise and lower the car and the counterweight. A driving device to be driven, a deflector wheel arranged at a distance from the driving sheave, and disposed outside the area of the car in the vertical projection plane of the hoistway, and wound around the driving sheave and the deflector. It is equipped with a main rope for suspending a car and a counterweight. Brief Description of Drawings

FIG. 1 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a transverse sectional view showing the elevator apparatus of FIG. 1,

FIG. 3 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 2 of the present invention, FIG. 4 is a transverse sectional view showing the elevator apparatus of FIG. 3,

FIG. 5 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 3 of the present invention, and FIG. 6 is a transverse sectional view showing the elevator apparatus of FIG. 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 longitudinal sectional view showing an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a transverse sectional view showing the elevator apparatus of FIG.

In the figure, a pair of car guide rails 2a and 2b and a pair of counterweight guide rails 3a and 3b are installed in the hoistway 1. Car guide rail 2 a,

A car 4 is arranged between 2b and i, and a counterweight 5 is arranged between the counterweight guide rails 3a and 3b. The car 4 is guided by the car guide rails 2a and 2b. It is moved up and down in hoistway 1. The counterweight 5 is guided by the counterweight guide rails 3 a and 3 b and is moved up and down in the hoistway 1.

In the elevator apparatus shown in FIGS. 1 and 2, in the vertical projection plane of the hoistway 1, the car 4 and the counterweight 5 drop the counterweights adjacent to each other in the frontage direction of the car 4. It is an elevator system of the system. In the vertical projection plane of the hoistway 1, the straight line connecting the cage guide drains 2a and 2b is perpendicular to the straight line connecting the counterweight guide rails 3a and 3b. (Figure 2).

A support member 6 extending in the horizontal direction is fixed to the upper portions of the counterweight guide rails 3a and 3b. The support member 6 supports a driving device (winding machine) 7 that raises and lowers the car 4 and the counterweight 5. The driving device 7 has a driving device main body 8 including a motor and a driving sheave 9 rotated by the driving device main body 8. Further, the driving device 7 is a hoisting machine in which the dimension of the driving sheave 9 in the axial direction is smaller than the dimension of the driving sheave 9 in the direction perpendicular to the axis, that is, a thin-type hoisting machine. Further, the driving device 7 is provided above the counterweight 5 with the rooster 3. Furthermore, the driving device 7 is arranged outside the area of the car 4 and in the area of the counterweight 5 in the vertical projection plane of the hoistway 1 (FIG. 2). In this example, the driving device 7 is arranged so that the axis of the driving gear 9 passes through the center of a straight line connecting the counterweight guide rails 3a and 3b in the vertical projection plane of the hoistway 1. (Figure 2).

Above the counterweight guide rail 3a, there is provided a deflecting wheel 1◦ spaced from the drive sheave 9. The deflector wheel 10 is arranged outside the respective areas of the car 4 and the counterweight 5 in the vertical projection plane of the hoistway 1 (FIG. 2). Also, the deflecting wheel 10 has a thickness of the counterweight 5 in the vertical projection plane of the hoistway 1 (in the direction perpendicular to the straight line connecting the counterweight guide rails 3a and 3b to each other). (Length of the counterweight 5) within the range of the car guide rail 2a and farther from the car 4 than the car weight guide rail 2a, and further away from the counterweight 5 than the counterweight guide rail 3a. (Figure 2).

A plurality of main ropes 11 are wound around the drive sheave 9. At the lower end of the car 4, a pair of car hanging wheels 12 around which the main rope 11 is wound are provided. At the upper end of the counterweight 5, a counterweight lifting wheel 13 around which the main rope 11 is wound is provided. Have been. In this example, the straight line connecting the car suspension wheels 12 is parallel to the straight line connecting the car guide rails 2a and 2b.

A first rope stopper 14 is fixed to an upper portion of the car guide rail 2b. A second cleat 15 is fixed to the support member 6. The main rope 11 has a first end 11 a connected to the first cleat 14 and a second end 1 lb connected to the second cleat 15. Have. Also, the main rope 11 is wound from the first end 11a in the order of a pair of car suspension wheels 12, a deflector wheel 10, a drive sheave 9, and a counterweight suspension wheel 13, It reaches the second end 11b. That is, the main rope 11 is wound around the drive sheave 9 and the deflector wheel 10, and suspends the car 4 at one end and the counterweight 5 at the other end. Further, the main rope 11 has a high coefficient of friction to prevent slippage between the pair of car suspension wheels 12, the deflecting wheel 10, the drive sheave 9, and the counterweight suspension wheel 13. It has an unillustrated outer layer (covering material) made of friction material (resin).

In such an elevator system, since the driving device 7 and the deflector 13 are arranged outside the area of the car 4 in the vertical projection plane of the hoistway 1, the ceiling of the car 4 is The car 4 can be raised to a position exceeding the height of the deflector 13 and the drive sheave 9 should be placed away from the car suspension car 12 in the vertical projection plane of the hoistway 1. Therefore, it is not necessary to dispose the drive sheave 9 in close proximity to both the car hoisting wheel 12 and the counterweight hoisting wheel 13, and the installation range of the driving device 7 in the hoistway 1 can be increased. Can be. As a result, the driving device 7 can be arranged at a position closer to the car 4 while avoiding interference between the car guide rail 2a and the counterweight guide rail 3a, and the like. The space can be reduced.

Also, by changing the positions of the deflecting wheel 10, the car suspension wheel 12 and the car guide rail 2a, the distance between the counterweight guide rails 3a and 3b is increased and the counterweight 5 is increased. Since the dimension of the counterweight 5 in the width direction can be increased, the dimension of the counterweight 5 in the thickness direction can be reduced, and the space in the hoistway 1 can be reduced.

Also, in the vertical projection plane of the hoistway 1, the driving device 7 The space in the vertical direction in the hoistway 1 can be used effectively. Furthermore, since the driving device 7 can be arranged within the range of the thickness of the counterweight 5, the space in the hoistway 1 can be further reduced.

Further, since the main rope 11 has an outer layer portion made of a high friction material, the main sheave 9 includes a driving sheave 9, a deflecting wheel 10, a pair of car hanging wheels 12 and a counterweight hanging wheel 13. The main rope 1 1 can be prevented from slipping.

In the above example, in the vertical projection plane of the hoistway 1, all of the driving devices 7 are arranged in the area of the counterweight 5, but the horizontal cross-sectional area in the hoistway 1 is reduced. If possible, a part of the driving device 7 may be arranged in the region of the counterweight 5, or the driving device 7 may be arranged outside the region of the counterweight 5.

Also, in the above example, the straight line connecting the car suspension wheels 12 is parallel to the straight line connecting the car guide rails 2a and 2b, but in the vertical projection plane of the hoistway 1, A straight line connecting the car suspension wheels 12 is inclined with respect to a straight line connecting the car guide rails 2a and 2b to each other, and the car suspension wheels 12 are positioned symmetrically around the center of gravity of the car 4. It may be arranged. Embodiment 2

FIG. 3 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 2 of the present invention, and FIG. 4 is a transverse sectional view showing the elevator apparatus of FIG. The elevator device shown in Figs. 3 and 4 has a counterweight drop-down system in which the car 4 and the counterweight 5 are adjacent to each other in the back direction of the car 4 in the vertical projection plane of the hoistway 1. It is an elevator for the night. In the vertical projection plane of the hoistway 1, the straight line connecting the counterweight guide rails 3a and 3b is parallel to the straight line connecting the car guide rails 2a and 2b (Fig. 4). ·.

A support member 6 is fixed to the upper part of the counterweight guide rails 3a and 3b. The drive device 7 is supported by the support member 6. The driving device 7 has a driving device main body 8 and a driving sheave 9 rotated by the driving device main body 8. Further, the driving device 7 is arranged outside the area of the car 4 and in the area of the counterweight 5 in the vertical projection plane of the hoistway 1 (FIG. 4). , At the upper part of the counterweight guide rail 3b, there is provided a deflecting wheel 21 spaced apart from the drive sheave 9. The deflecting wheel 21 is a vertical throw of the hoistway 1. In the shadow plane, the car 4 and the counterweight 5 are arranged outside the respective areas, and the thickness of the counterweight 5 (with respect to the straight line connecting the counterweight guide rails 3a and 3b to each other). The length of the counterweight 5 in the vertical direction is within a range of 5) At the lower end of the car 4, a pair of car suspension wheels 1 2 is provided. 2 is arranged in the vertical projection plane of the hoistway 1 so as to be close to the deflector 2 1. In the vertical projection plane of the hoistway 1, the straight line connecting the car suspension wheels 1 2 to each other is a car 4 It is inclined with respect to the frontage direction and passes near the center of gravity of car 4 (Fig. 4).

At the lower end of the counterweight 5, a counterweight lifting wheel 13 is provided. The axes of the drive sheave 9, the counterweight lifting wheel 13 and the deflector wheel 21 are parallel to each other.

At the upper part of the hoistway 1, a first girder clasp 14 is fixed. A second cleat 15 is fixed to the support member 6. The first end 11a of the main rope 11 is connected to the first cleat 14 and the second end 11b of the main rope 11 is connected to the second cleat 15. Has been continued. The main rope 11 is wound from the first end 1 la in the order of a pair of car hoisting wheels 12, deflector wheels 21, drive sheave 9, and counterweight hoisting wheels 13, The second end reaches 1 lb. Other configurations are the same as in the first embodiment.

In such an elevator apparatus, the driving device 7 and the deflector wheel 21 are located outside the area of the car 4 in the vertical projection plane of the hoistway 1, so that it is the same as in the first embodiment. In addition, the range in which the driving device 7 can be installed in the hoistway 1 can be widened, and the space in the hoistway 1 can be reduced. Embodiment 3.

FIG. 5 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 3 of the present invention, and FIG. 6 is a transverse sectional view showing the elevator apparatus of FIG. In this example, a pair of return vehicles, a first return vehicle 31 and a second return vehicle 32, are provided above the hoistway 1. The first return wheel 3 1 and the second return wheel 3 2 are located within the vertical projection plane of the hoistway 1 It is located outside the respective areas of car 4 and counterweight 5 (FIG. 6). The axis of each of the first return wheel 31 and the second return wheel 32 is perpendicular to the axis of the deflector wheel 21. In the vertical projection plane of the hoistway 1, the straight lines connecting the centers of the first return wheel 3 1 and the second return wheel 3 2 are respectively formed by the drive sheave 9 and the deflector wheel 21. It is perpendicular to the straight line connecting the centers (Figure 6). Further, the first return wheel 3 1 is located at a lower position than the second return wheel 3 2, and is more deflected than the second return wheel 3 2 in the vertical projection plane of the hoistway 1. It is located on the side of car 21.

From the first end 11a, the main rope 11 is a pair of car suspension wheels 12, a second return wheel 3 2, a first return wheel 3 1, a deflecting wheel 21, a drive sheave 9, and A counterweight lifting wheel 13 is wound around in order, leading to a second end of 1 lb. Other configurations are the same as in the first embodiment.

In such an elevator system, in the vertical projection plane of the hoistway 1, the first return wheel 3 1 and the second return wheel 3 2 around which the main rope 11 Since the car 4 is located outside the area, the car 4 can be raised to a position where the ceiling of the car 4 exceeds the installation height of the first and second return wheels 31 1 and 32 2, and the hoistway 1 In the direct projection plane, each car hanging wheel 12 can be arranged at a position away from the deflector wheel 21, and the degree of freedom of arrangement of each car hanging wheel 12 in the car 4 can be increased.

In the above example, a pair of first and second return wheels 3 1 and 3 2 are provided in the hoistway 1, but two or more pairs of first and second return wheels 3 1 and 3 2 may be provided in the hoistway 1.

Claims

The scope of the claims

1. Baskets and counterweights that can move up and down the hoistway,

A driving device having a drive sheave, disposed outside the area of the car in a vertical projection plane of the hoistway, and raising and lowering the car and the counterweight;

A deflecting car located at a distance from the drive sheave 3 and located outside the area of the car in the vertical projection plane of the hoistway; and

A main rope suspended around the drive sheave and the deflecting wheel to suspend the car and the counterweight.

An elevator device, comprising:

2. The elevator apparatus according to claim 1, wherein in the vertical projection plane of the hoistway, at least a part of the driving device is arranged in the area of the counterweight.

3. The vehicle according to claim 1, further comprising a pair of return wheels around which the main rope is wound and which is disposed outside a region of the car in a vertical projection plane of the hoistway. 2. The elevator device according to claim 1.

4. The elevator apparatus according to claim 1, wherein the main rope has an outer layer portion made of a high friction material.