WO2005100225A1 - Elevator apparatus - Google Patents

Abstract

An elevator apparatus, wherein a car and a balance weight are suspended from a first main rope and a second main rope. The first main rope comprises a first end part connected to the first rope connection part of the car and a second end part connected to the balance weight. The second main rope comprises a third end part connected to the second rope connection part of the car and a fourth end part connected to the balance weight. Only the first main rope of the first and second main ropes is wrapped around the drive sheave of a drive device. A return pulley for the second main rope around which only the second main rope of the first and second main ropes is wrapped is installed at the upper part of a hoistway.

Description

 Elevator equipment

Technical field

 The present invention relates to a traction type elevator apparatus in which a car and a counterweight are suspended in a hoistway by a main rope.

Background art

 Light

 For example, Japanese Unexamined Patent Publication No. Hei 7-104334 describes a conventional machine room-less elevator device in which a car and a counterweight are suspended in a hoistway by a 2: 1 roping method.

It is shown. In such an elevator apparatus, it is necessary to provide a suspension wheel on the car and the counterweight, which complicates the configuration and increases the cost. In addition, because of the 2: 1 roving method, the driving sheave rotation speed was high, and there was a possibility that vibration and noise would increase.

 In the conventional machine room-less elevator device disclosed in Japanese Patent Application Laid-Open No. H11-311032, a car and a counterweight are provided in a 1: 1 roving system by two ropes. It is suspended in the hoistway. In such an elevator system, the number of revolutions of the drive sheave can be reduced to 1 Z 2 compared to the 2: 1 roving method, but since the suspended load is doubled, the drive device, guide rails, support beams, etc. It was necessary to increase the rigidity of the components, which could lead to an increase in cost and installation space. Further, Japanese Patent Application Laid-Open No. H11-11072 also discloses an elevator apparatus using two driving devices. However, since two driving devices are required, the cost increases and the cost increases. However, control becomes complicated. Disclosure of the invention

The present invention has been made to solve the above-described problems, and an elevator apparatus capable of simplifying a configuration and avoiding an increase in the number of rotations of a drive sheave while suppressing an increase in a suspended load. The purpose is to obtain. An elevator apparatus according to the present invention includes a driving device having a driving sheep, a first port connecting portion provided on one side in the width direction, and a second port connecting portion provided on the other side in the width direction. A car that is lifted and lowered in the hoistway by the drive device, a counterweight that is raised and lowered in the hoistway by the drive device, a first end connected to the first rope connection portion, and connected to the counterweight. A first main rope for hanging a car and a counterweight in a hoistway, a third end connected to a second rope connection, and a counterweight. A second main rope for suspending the car and the counterweight in the hoistway, and only the first main rope of the first and second main ropes is wound around the drive sheave. Only the second main rope of the first and second main ropes is wrapped around the hoistway. A return wheel for the main rope is provided.

 Also, an elevator apparatus according to the present invention is a drive device having a drive sheave, a car and a counterweight that are lifted and lowered in the hoistway by the drive device, and are wound around the drive sheave. The car has a first rope connecting portion provided on one side in the width direction, and a second rope connecting portion provided on the other side in the width direction. The rope has a first end connected to the first rope connection, and a second end connected to the second rope connection, and a main rope is wound around an upper part of the hoistway. The second end side return wheel is provided.The counterweight is provided with a rotating counterweight suspension wheel that is rotating.The main rope is driven sheave in order from the first end side. It is wrapped around the counterweight lifting wheel and the second end side turning wheel. Brief Description of Drawings

 FIG. 1 is a perspective view showing a main part of an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing the elevator apparatus of FIG. 1,

 FIG. 3 is a perspective view showing a main part of an elevator apparatus according to Embodiment 2 of the present invention, FIG. 4 is a plan view showing the elevator apparatus of FIG. 3,

 FIG. 5 is a perspective view showing a main part of an elevator apparatus according to Embodiment 3 of the present invention, FIG. 6 is a plan view showing the elevator apparatus of FIG. 5,

FIG. 7 is a plan view showing a main part of an elevator apparatus according to Embodiment 4 of the present invention. FIG. 8 is a perspective view showing a main part of an elevator apparatus according to Embodiment 5 of the present invention. 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 perspective view showing a main part of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a plan view showing the elevator apparatus of FIG.

 In the figure, a pair of car guide rails 2 (omitted in FIG. 1) 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 car 4 has a front surface 4a, a back surface 4b, a first side surface 4c, and a second side surface 4d. A car entrance 4e is provided on the front 4a.

 The counterweight 5 is guided by the counterweight guide rail 3 and is moved up and down in the hoistway 1. The counterweight 5 is disposed behind the car 4 so as to face the back 4b of the car 4 when located at the same height as the car 4. In the vertical projection plane (FIG. 2), the straight line connecting between the car guide rails 2 is parallel to the straight line connecting between the counterweight guide rails 3. .

 On one side (first side 4c side) of the car 4 in the width direction, a first rope connection portion 6 is provided. On the other side in the width direction of the car 4 (the second side 4d side), a second rope connection portion 7 is provided. The first and second rope connection portions 6 and 7 are provided at the lower end of the car 4.

In the upper part of the hoistway 1, a driving device (winding machine) 8 for raising and lowering the car 4 and the counterweight 5 is installed. The driving device 8 is supported by a support beam (not shown) fixed on the upper side of at least one guide rail 2 or 3 or on the building side. The driving device 8 has a driving device main body 9 including a motor and a brake, and a driving sheep 10 rotated by the driving device main body 9. As the driving device 8, a thin winding machine having an axial dimension smaller than an outer dimension in a direction perpendicular to the axial direction is used. As a motor for a thin hoist, for example, a permanent magnet motor (PM motor) is used. The drive device 8 is arranged such that the rotation axis of the drive sheave 10 is parallel and horizontal to the width direction of the car 4. The driving device 8 is disposed such that the driving device main body 9 is located on the car 4 side and the driving sheave 10 is located on the hoistway wall 1a side in the vertical projection plane.

 A rotatable first deflector wheel 11, a rotatable second main rope return wheel 12, and a rotatable second deflector wheel 13 are provided at an upper portion in the hoistway 1. The first deflector 11, the second main rope return wheel 12 and the second deflector 13 are supported by supporting beams. The first deflector wheel 11, the second main rope return wheel 12 and the second deflector wheel 13 are arranged such that their rotation axes are parallel to the rotation axis of the drive sheave 10.

 The driving device 8 and the first deflecting wheel 11 are arranged between the first side face 4c of the car 4 and the hoistway wall 1a facing the first side face 4c in the vertical projection plane. In addition, the second main rope return wheel 12 and the second deflector wheel 13 are connected to the second side surface of the car 4 in the vertical projection plane.

It is arranged between 4 d and the shaft wall 1 b facing the second side surface 4 d.

 In addition, the drive sheave 10 and the first deflecting wheel 11 and the second main rope return wheel 12 and the second deflecting wheel 13 are centered on the widthwise center line of the car 4 in the vertical projection plane. Are arranged almost symmetrically.

 A plurality of first main ropes (driving ropes) 14 are wound around the driving sheave 10 and the first deflector wheel 11. Each first main rope 14 has a first end 14 a connected to the first rope connecting portion 6 and a second end 14 b connected to the counterweight 5. The second end 14 b is connected to the upper part of one end in the width direction of the counterweight 5.

 A plurality of second main ropes (hanging ropes) are wound around the second main rope return wheel 12 and the second deflector wheel 13. Each second main rope 15 has a third end 15 a connected to the second rope connection 7 and a fourth end 1 connected to the counterweight 5.

5b. The fourth end 15 b is connected to the upper part of the other end in the width direction of the counterweight 5.

 The car 4 and the counterweight 5 are connected by the first main rope 14 and the second main rope 15

1: It is suspended in the hoistway 1 by one roving method. And basket 4 and The counterweight 5 is moved up and down in the hoistway 1 via the first main rope 14 by the driving force of the driving device 8.

 In this elevator system, two independent main ropes, that is, first and second main ropes 14 and 15 are used. In addition, the first and second main ropes 14 and 15 are arranged without merging with each other.

 Only the first main rope 14 of the first and second main ropes 14 and 15 is wound around the drive sheave 10. Further, only the second main rope 15 of the first and second main ropes 14 and 15 is wound around the second main rope return wheel 12. As the first and second main ropes 14 and 15, for example, a tree-covered rope is used. An outer layer covering made of a high friction resin material is provided on the outer periphery of the resin-coated rope. The outer layer covering is made of a high friction resin material having a friction coefficient of 0.2 or more, for example, a polyurethane resin.

 In such an elevator system, since the car 4 and the counterweight 5 are suspended in a 1: 1 roving method, there is no need to mount a lifting wheel on the car 4 or the counterweight 5, and the configuration is simple. Can be In addition, the number of rotations of the drive sheave 10 can be reduced to one half of that of the 2: 1 roping method.

 In addition, the main rope is distributed to the first and second main ropes 14 and 15, only the first main rope 14 is wound around the drive sheave 10, and the second main rope return wheel 12 is wound around the drive sheave 10. (2) Since only the main rope 15 is wound, the suspended load is distributed, and the load acting on the drive 8, the main ropes 14 and 15, the guide rails 2 and 3, and the supporting beams is reduced by 2: 1. It can be suppressed to the same level as in the case of the roving method. As a result, the rigidity of the device can be reduced, and the increase in cost can be suppressed.

 Further, since there is only one drive device 8, it is possible to avoid an increase in cost and an increase in installation space for the drive device 8.

 Therefore, according to the elevator apparatus of the first embodiment, it is possible to simplify the configuration and avoid an increase in the rotation speed of the drive sheave 10 while suppressing an increase in the hanging load. Also, since the first and second rope connection portions 6 and 7 are arranged on both sides of the car 4,

4 can be stably suspended.

In addition, use resin-coated ropes as the first and second main ropes 14 and 15. As a result, the traction capacity can be improved, and the car 4 can be stably driven only by the traction force of the first main rope 14. Further, since the resin-coated rope can increase the flexibility more than a simple steel rope, the diameter of the drive sheave 10 ゃ the diameter of the second main rope return wheel 12 can be reduced.

 Furthermore, since a thin winding machine was used as the driving device 8 and the driving device 8 was arranged between the first side surface 4c and the hoistway wall 1a in the vertical projection plane, the plane size of the hoistway 1 was reduced. The size of the overhead can be reduced without increasing the size.

 In addition, since the first and second rope connecting portions 6 and 7 are provided below the upper end of the car 4, the rope connecting portions 6 and 7 and the driving device 8 and return wheel 1 located above the rope connecting portions 6 and 7 are provided. 2 can be secured and the overhead size can be reduced. Embodiment 2

 Next, FIG. 3 is a perspective view showing a main part of an elevator apparatus S according to Embodiment 2 of the present invention, and FIG. 4 is a plan view showing the elevator apparatus of FIG.

 In the figure, the driving device 8 is arranged at a lower portion (near the bottom) in the hoistway 1. Further, the driving device 8 is arranged such that the rotation axis of the driving sheep 10 is parallel and horizontal to the depth direction of the car 4. Further, the driving device 8 is disposed between the rear surface 4b of the car 4 and the hoistway wall 1c facing the rear surface 4b in the vertical projection plane. Furthermore, the drive 8 is arranged on the side of the car 5 in the vertical projection plane.

 A pair of first main rope return wheels 21 and a pair of second main rope return wheels 22 are arranged in the upper portion of the hoistway 1. The return wheels 2 1 and 2 2 are omitted in FIG. 3 and only one is shown. The return wheels 21 and 22 are arranged such that their rotation axes are parallel and horizontal in the width direction of the car 4.

 The return wheels 2 1, 2 2 are arranged between the side surfaces 4 c, 4 d of the car 4 and the hoistway walls l a, 1 b in the vertical projection plane. The return wheels 21 and 22 are arranged substantially symmetrically about the center line in the width direction of the car 4 in the vertical projection plane.

A counterweight return wheel 23 is disposed in the upper part of the hoistway 1. The counterweight return wheel 23 has a rotating axis that is parallel and horizontal to the depth direction of the car 4. It is arranged so that. Also, the counterweight return wheel 23 is disposed between the rear surface 4c of the car 4 and the hoistway wall 1c in the vertical projection plane. Further, the counterweight-side turning wheel 23 is disposed between the drive sheave 10 and the counterweight 5 in the vertical projection plane.

 The first main rope 14 is wound around the first main rope return wheel 21, the drive sheave 10, and the counterweight return wheel 23 in order from the first end 14 a side. The second main rope 15 is wound around the second main rope return wheel 22.

 The car 4 and the counterweight 5 are suspended in the hoistway 1 by a 1: 1 roving method by a first main rope 14 and a second main rope 15. The car 4 and the counterweight 5 are moved up and down in the hoistway 1 via the first main rope 14 by the driving force of the driving device 8.

 Only the first main rope 14 of the first and second main ropes 14 and 15 is wound around the drive sheep 10. Further, only the second main rope 15 of the first and second main ropes 14 and 15 is wound around the second main rope return wheel 22. Other configurations are the same as those of the first embodiment.

 As described above, even when the driving device 8 is arranged at the lower portion in the hoistway 1, it is possible to simplify the configuration and avoid an increase in the rotation speed of the driving sheave 10 while suppressing an increase in the lifting load. Can be.

 In addition, since the driving device 8 is disposed at the lower portion in the hoistway 1, maintenance work on the driving device 8 can be easily performed from the pit (bottom) force of the hoistway 1.

 In addition, since the return vehicles 21, 22, 23 were placed between the side walls 4c, 4d and the back surface 4b and the hoistway walls la, 1b1c in the vertical projection plane, the hoistway 1 Overhead dimensions can be reduced without increasing the plane dimensions. Embodiment 3.

Next, FIG. 5 is a perspective view showing a main part of an elevator apparatus according to Embodiment 3 of the present invention, and FIG. 6 is a plan view showing the elevator apparatus of FIG. In the figure, the driving device 8 is disposed between the first side surface 4c of the car 4 and the shaft wall 1a in the vertical projection plane. Further, in the driving device 8, the rotating shaft of the driving sheave 10 is parallel to the width direction of the car 4 and It is arranged to be horizontal.

 The first and second loop connecting portions 6 and 7 are arranged such that a straight line connecting them in the vertical projection plane passes through or near the center of gravity of the car 4. That is, the first and second rope connection portions 6 and 7 are arranged symmetrically with respect to the center of gravity of the car 4 in the vertical projection plane. In the vertical projection plane, a straight line connecting the first and second rope connection portions 6 and 7 intersects a straight line connecting the car guide rail 2. That is, in the depth direction of the car 4, the first rope connection section 6 is disposed behind the car guide rail 2, and the second rope connection section 7 is disposed in front of the car guide rail 2.

 Only one return wheel 2 1 for the first main rope is used. The spacing between the second main rope return wheels 22 and the width of the counterweight 5 are larger than in the second embodiment. Other configurations are the same as those of the second embodiment.

 As described above, even when the driving device 8 is arranged on the side of the car 4, it is possible to simplify the configuration and avoid an increase in the rotation speed of the driving sheave 10 while suppressing an increase in the hanging load.

 Further, by suspending the car 4 substantially at the position of its center of gravity, the car 4 can be stably moved up and down. Embodiment 4.

 Next, FIG. 7 is a plan view showing a main part of an elevator apparatus according to Embodiment 4 of the present invention. In this example, the plan shape of the car 4 is different from that of the second embodiment. The first and second side surfaces 4c and 4d of the car 4 are provided with inclined surfaces 4f and 4g, respectively, which are inclined so that the width dimension decreases toward the rear in the depth direction of the car 4. As a result, the plan shape of the car 4 is a hexagonal shape in which the rear corner is chamfered.

 The first main rope return wheel 21 and the second main rope return wheel 22 are arranged such that their rotation axes are inclined with respect to the width direction of the car 4. That is, return car 2 1,

The rotation axis of 22 is substantially perpendicular to the inclined planes 4 f and 4 g in the vertical projection plane. Then, the return wheels 2 1 and 2 2 have the inclined surfaces 4 f and 4 g and the hoistway walls 1 a and

1b. Other configurations are the same as those of the second embodiment.

With such a configuration, the main ropes 14, 15 to the return wheels 21, 22 are formed. The car 4 and the counterweight 5 can be moved up and down smoothly, and the life of the main ropes 14 and 15 can be extended. In addition, both return wheels 21 and 22 can be arranged directly above the counterweight 5, so that the counterweight 5 can be raised and lowered smoothly. In addition, overhead dimensions can be reduced. Embodiment 5

 Next, FIG. 8 is a perspective view showing a main part of an elevator apparatus according to Embodiment 5 of the present invention. In the figure, a rotatable counterweight suspension wheel 24 is provided above the counterweight 5. The car 4 and the counterweight 5 are suspended in the hoistway 1 by a plurality of main ropes 25. In the first to fourth embodiments, two main ropes 14 and 15 are used. In the fifth embodiment, only one main rope 25 is used. As the main rope 25, a resin-coated rope can be used.

 A first end side return wheel 26, a second end side return wheel 27, and a counterweight side return wheel 28 are provided at an upper portion in the hoistway 1. The first and second end side return wheels 26, 27 are arranged such that their rotation axes are parallel and horizontal to the width direction of the car 4. The return wheels 26 and 27 are disposed between the side surface of the car 4 and the hoistway wall in the vertical projection plane. Further, the first end side turning wheel 26 and the second end side turning wheel 27 are arranged substantially symmetrically with respect to the center line in the width direction of the car 4 in the vertical projection plane. The counterweight turning wheel 28 is arranged such that its rotation axis is parallel and horizontal to the depth direction of the car 4. In addition, the return wheel 28 is disposed between the back surface of the car 4 and the shaft wall in the vertical projection plane. Further, the return wheel 28 is disposed between the drive sheave 10 and the counterweight 5 in the vertical projection plane.

 The main rope 25 has a first end 25 a connected to the first rope connection 6 (not shown in FIG. 8) and a second end 25 b connected to the second rope connection 7. And The main ropes 25 are, in order from the first end portion 25a side, a first end side return wheel 26, a driving sheave 10 (not shown in FIG. 8), a counterweight return side wheel 2 8. It is wound on the counterweight lifting wheel 24 and the second end side return wheel 27.

In the fifth embodiment, the second end 14 b and the fourth end 15 b of the second embodiment are connected. Subsequently, the structure is substantially the same as that of the counterweight hanging wheel 24. The car 4 and the counterweight 5 of the fifth embodiment are suspended in the hoistway 1 by a main rope 25 in a 1: 1 roping method.

 Even with such an elevator device, it is possible to simplify the configuration and avoid an increase in the number of revolutions of the drive sheave 1 ° while suppressing an increase in the lifting load.

 In addition, since the counterweight suspension wheel 24 is provided, the imbalance of the tension of the main rope 25 can be automatically absorbed on both sides of the counterweight 5.

 In the fifth embodiment, the counterweight suspension wheel 24 is applied to the layout of the second embodiment. However, the counterweight suspension wheel can be applied to the layout of the first, third, or fourth embodiment.

 Further, in Embodiments 1 to 5, the thin winding machine is used, but the driving device is not necessarily limited to the thin winding machine.

Claims

The scope of the claims 1. A drive having a drive sheave,  It has a first loop connection section provided on one side in the width direction and a second loop connection section provided on the other side in the width direction, and is moved up and down in the hoistway by the driving device. Car, a counterweight that is raised and lowered in the hoistway by the driving device,  A first end having a first end connected to the first rope connection portion and a second end connected to the counterweight, and suspending the car and the counterweight in the hoistway. Main rope, and  A second end having a third end connected to the second rope connection portion and a fourth end connected to the counterweight, and suspending the car and the counterweight in the hoistway. Main rope  With  Only the first main rope of the first and second main ropes is wound around the drive sheave,  A lifter for a second main rope, on which only the second main rope of the first and second main ropes is wound, is provided above the hoistway. apparatus. 2. A drive having a drive sheave,  A car and a counterweight which are lifted and lowered in the hoistway by the driving device; and a main rope wound around the drive sheave and suspending the car and the counterweight in the hoistway.  With  The car has a first rope connection portion provided on one side in the width direction, and a second rope connection portion provided on the other side in the width direction,  The main rope has a first end connected to the first rope connection, and a second end connected to the second port connection, At the upper part of the hoistway, there is a second end turner around which the main rope is wound. Have been  The counterweight is provided with a counterweight lifting wheel that can be freely rotated.The main ropes are, in order from the first end, the drive sheave, the counterweight lifting wheel, and the second An elevator device, wherein the elevator device is wound around an end-side turning wheel. 3. The elevator device according to claim 1, wherein the main rope is a resin-coated rope having an outer layer covering made of a high-friction resin material provided on an outer peripheral portion. 4. The driving device is a thin-type hoisting machine having an axial dimension smaller than a dimension in a direction perpendicular to the axial direction, and is disposed between the cage and the hoistway wall in a vertical projection plane. 3. The elevator device according to claim 1 or 2. 5. The elevator apparatus according to claim 1, wherein the driving device is disposed at a lower part in the hoistway. 6. The elevator apparatus according to claim 1, wherein the first and second rope connection portions are provided below an upper end portion of the car. 7. The elevator device according to claim 1, wherein the first and second rope connection portions are arranged symmetrically with respect to the center of gravity of the car in a vertical projection plane. 8. The side surface of the car is provided with an inclined surface inclined so that the width dimension becomes narrower toward the rear in the depth direction of the car, and the rotation axis of the return wheel is inclined in the vertical projection plane. 3. The elevator apparatus according to claim 1, which is substantially perpendicular to the plane.