WO2002018256A1

WO2002018256A1 - Elevator device

Info

Publication number: WO2002018256A1
Application number: PCT/JP2000/005796
Authority: WO
Inventors: Akihiro Kadoi; Eiji Ando
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2000-08-28
Filing date: 2000-08-28
Publication date: 2002-03-07
Also published as: CN1174910C; EP1327596A1; EP1327596A4; CN1382100A; JP4727124B2; DE60043901D1; EP1327596B1

Abstract

An elevator device capable of suppressing the height dimension of a hoistway (1) by efficiently utilizing a space inside the hoistway (1), wherein a balance weight (5) is disposed at the rear of a car (4), a drive device (9) comprises a drive device main body (10) and a drive sheave (11) rotated by the drive device main body (10), the drive device main body (10) is disposed so as to be overlapped with the rear corner part of the car (4) on a vertical projection plane, the drive device (9) is disposed so that the axis of the drive sheave (11) extends aslant relative to the frontage direction of the car (4) (lateral direction shown in

Description

Meiseyo Elevator Overnight Equipment

Technical field

The present invention relates to an elevator apparatus in which a drive device is disposed in an upper part of a hoistway.

Background art

Conventionally, for example, Japanese Patent Laid-Open Publication No. Hei 10-1393932 discloses an elevator system in which a driving device is disposed above a hoistway without a machine room above the hoistway. Suelebe overnight is shown. With such an elevator system, the height of the building can be made lower than when a separate machine room is provided at the top of the hoistway, but the space for installing the drive unit at the top of the hoistway is increased. Need to secure. For this reason, it is desirable to utilize the space in the hoistway as efficiently as possible and to keep the height dimension of the hoistway smaller. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an elevator apparatus capable of efficiently using a space in a hoistway and suppressing the height dimension of the hoistway to be small. The purpose is to gain children.

An elevator apparatus according to the present invention includes a hoistway, a car that is raised and lowered in the hoistway, a counterweight that is disposed behind the car, and a counterweight that is raised and lowered in the hoistway, and that is disposed in an upper part of the hoistway. Having a drive main body, and a drive sheave rotated by the drive main body, a drive for raising and lowering a car and a counterweight, and a car and a counterweight wound around the drive sheave. The main body of the drive unit is disposed so as to overlap the rear corner of the car on a vertical projection plane, and the drive unit has an axis of the drive sheave. The first and second return vehicles that guide the main rope from the driving sheave to the car are installed horizontally in the upper part of the hoistway. Are spaced apart from each other. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic plan view showing an elevator apparatus according to Embodiment 1 of the present invention, FIG.

FIG. 3 is a cross-sectional view of a main part along the line I I I-I I I of FIG. 1,

FIG. 4 is a perspective view showing the structure of the main rope 12 of FIG. 1,

FIG. 5 is a schematic plan view showing an elevator apparatus according to Embodiment 2 of the present invention, and FIG. 6 is a cross-sectional view of a principal part taken along line VI-VI 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 schematic plan view showing an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view of a main part along line II-II in FIG. 1, and FIG. 3 is a line III-III in FIG. FIG.

In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed in a hoistway 1. The car 4 is guided up and down the hoistway 1 by the car guide rails 2. The counterweight 5 is arranged behind the car 4 and is guided by the counterweight guide rail 3 to be raised and lowered in the hoistway 1.

A mounting frame 6 is fixed near the upper ends of the car guide rail 2 and the counterweight guide rail 3. The mounting frame 6 has a plurality of beams 7 and a support 8 fixed on the beams 7. A drive device 9 for raising and lowering the car 4 and the counterweight 5 is mounted on the support base 8. The drive device 9 includes a drive device main body 10 including a motor and a drive sheave 11 rotated by the drive device main body 10.

The drive device main body 10 is disposed so as to overlap a part of the rear corner of the car 4 on a vertical projection plane. The driving device 9 is arranged so that the axis of the driving sheave 11 extends obliquely with respect to the frontage direction of the car 4 (the left-right direction in FIG. 1).

The drive sheave 11 has a car 4 and a counterweight 5 suspended in the hoistway 1. Several (only one is shown in the figure) main ropes 12 are wound around. One end of the main rope 12 is connected to the mounting frame 6 via a counterweight side cleat 13. In the vicinity of the upper end of the car-side guide rail 2, a car-side cleat 14 is fixed. The other end of the main rope 1 2 is connected to the car-side _{cleat 14.}

At the lower part of the car 4, a pair of car suspension wheels 15 around which the main ropes 12 are wound are provided. Above the counterweight 5, a counterweight suspension wheel 16 around which the main rope 12 is wound is provided.

On the mounting frame 6, rotatable first and second return wheels 17 and 18 for guiding the main ropes 12 from the drive sheave 11 to the car 4 are mounted horizontally apart from each other. C The first and second return wheels 17 and 18 move between the side 4a of the car 4 and the wall 1a of the hoistway 1 when the car 4 moves to the upper part of the hoistway 1. It is arranged to be located.

The main rope 12 extends downward from the drive sheave 11, is wrapped around the first return wheel 17, extends diagonally upward, and is further wrapped around the second return wheel 18, and extends downward. Extending to That is, the horizontal position of the main rope 12 is shifted by the combination of the first and second return wheels 17, 18. As a result, the main rope 12 is guided to the car suspension car 15 at a reasonable angle.

FIG. 4 is a perspective view showing the structure of the main rope 12 of FIG. In the figure, an inner strand layer 24 having a plurality of inner strands 22 and a filling strand 23 arranged in a gap between the inner strands 22 is arranged around the core wire 21. Has been done. Each internal strand 22 is composed of a plurality of aramide fibers and an impregnating material such as polyurethane. The filling strand 23 is made of, for example, polyamide.

An outer strand layer 26 having a plurality of outer strands 25 is arranged on the outer periphery of the inner strand layer 24. Each of the outer strands 25 is composed of a plurality of aramide fibers and an impregnating material such as polyurethane, like the inner strands 22.

Between the inner strand layer 24 and the outer strand layer 26, the strands 22 and 25 due to friction between the strands 22 and 25 of the sheave such as the drive sheave 11 are formed. A friction-reducing coating layer 27 is provided to avoid wear. In addition, a protective coating layer 28 is disposed on the outer periphery of the outer strand layer 26. Such a synthetic fiber rope has a higher coefficient of friction and is more flexible than a steel rope. In such an elevator apparatus, a counterweight 5 is disposed behind the car 4, and a driving device 10 is disposed obliquely above the rear corner of the car 4, and Since the position of the main rope 12 heading is shifted by the combination of the first and second return vehicles 17, 18, the space in the hoistway 1 is efficiently used, and the height of the hoistway 1 is increased. The size can be kept small.

In addition, when the dimension of the car 4 in the depth direction (the vertical direction in FIG. 1) changes, it can be easily coped with only by changing the interval between the first and second return wheels 17 and 18. o

Further, the first and second return wheels 17, 18 move between the side surface 4 a of the car 4 and the wall 1 a of the hoistway 1 when the car 4 moves to the upper part in the hoistway 1. The first and second return wheels 17, 18 do not increase the height of the hoistway 1, and the space inside the hoistway 1 is more efficiently Can be used.

Furthermore, since the drive unit 9, the first and second return wheels 17 and 18 are mounted on the common mounting frame 6, the structure is simple and the installation work is easy. Further, since one end of the main rope 12 is also connected to the mounting frame 6, installation work is further facilitated. In addition, since the main rope 12 is made of a synthetic fiber rope having a high coefficient of friction and excellent flexibility, the drive sheave 11 and the first and second return wheels 17 and 18 The diameter can be reduced, and the installation space can be reduced. Therefore, the space in the hoistway 1 can be used more efficiently, and the height of the hoistway 1 can be reduced. Embodiment 2

Next, FIG. 5 is a schematic plan view showing an elevator apparatus according to Embodiment 2 of the present invention, and FIG. 6 is a cross-sectional view of a main part along line VI-VI in FIG. In the figure, the counterweight

On the upper part of 5, there are first and second counterweight suspenders 3 1, around which the main rope 12 is wound. 32 are provided at intervals in the horizontal direction. Further, the cage 4 has a larger frontage size and a heavier weight than in the first embodiment, and accordingly, the width of the counterweight 5 is larger. Other configurations are the same as those in the first embodiment. In this way, by arranging the first and second counterweight suspenders 31 and 32 side by side, when the width dimension of the counterweight 5 changes with the change of the dimension in the width direction of the car 4 This can be easily dealt with simply by changing the distance between the first and second counterweight / lifting vehicles 31 and 32.

Claims

The scope of the claims

1. The hoistway,

A car that is raised and lowered in this hoistway,

A counterweight arranged behind the car and raised and lowered in the hoistway;

A driving device that has a driving device main body disposed at an upper portion in the hoistway, and a driving sheep that is rotated by the driving device main body, and that drives the car and the counterweight to move up and down; and

A main rope suspended around the drive sheave and suspending the car and the counterweight in the hoistway

And an elevator device equipped with

The driving device main body is disposed so as to overlap a rear corner portion of the car on a vertical projection plane, and the driving device is configured such that an axis of the driving gear extends obliquely with respect to a frontage direction of the car. In the upper part of the hoistway, first and second return wheels for guiding the main rope from the drive ship to the car are horizontally spaced from each other. All night equipment.

2. The first and second return wheels are arranged so as to be located between a side surface of the car and a wall surface of the hoistway when the car moves to an upper part in the hoistway. The elevator device according to 1 above.

3. The elevator according to claim 1, wherein a first and a second counterweight suspender around which the main rope is wound are provided at an upper portion of the counterweight at a distance from each other in the horizontal direction. Overnight equipment.

4. The elevator apparatus according to claim 1, further comprising a mounting frame fixed to an upper portion in the hoistway, and on which the driving device and the first and second return wheels are mounted.

5. The at least one end of the main rope is connected to the mounting frame. Elevator overnight device.

6. The elevator according to claim 1, wherein the main rope is composed of a synthetic fiber rope.