WO2006040813A1

WO2006040813A1 - Elevator apparatus

Info

Publication number: WO2006040813A1
Application number: PCT/JP2004/015051
Authority: WO
Inventors: Eiji Ando
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-10-13
Filing date: 2004-10-13
Publication date: 2006-04-20
Also published as: CN1890169A; EP1801061A1; EP1801061B1; CN100532234C; JP4762907B2; EP1801061A4; JPWO2006040813A1

Abstract

In an elevator apparatus, a main rope group has a first main rope for suspending an elevator car and a first counterweight and a second main rope for suspending the elevator car and the counterweight. A deflection pulley group includes a first elevator car side deflection pulley for guiding the first main rope from a drive sheave to the elevator car, a first counterweight side deflection pulley for guiding the first main rope from the drive sheave to the first counterweight, a second elevator car side deflection pulley for guiding the second main rope from the drive sheave to the elevator car, and a second counterweight side deflection pulley for guiding the second main rope from the drive sheave to the second counterweight. The positions at which the elevator car is suspended by the first and the second main rope are separated from each other in a vertical projection plane.

Description

Specification

Elevator equipment

Technical field

TECHNICAL FIELD [0001] The present invention relates to a traction type elevator apparatus in which a car and a counterweight are suspended by a main rope group wound around a drive sheave of a drive apparatus.

[0002] In a conventional elevator apparatus, a hoisting machine using a thin motor as a driving source is arranged at an upper part in a hoistway. The hoisting machine is arranged so that the rotational axis of the drive sheave is vertical. Furthermore, in order to prevent an increase in the angle of entry of the main rope into the drive sheave, the hoisting machine is arranged at a corner portion at the upper part of the hoistway (see, for example, Patent Document 1).

[0003] Patent Document 1: Japanese Patent Laid-Open No. 2001-48450

Disclosure of the invention

Problems to be solved by the invention

[0004] In the conventional elevator apparatus as described above, in order to reduce the number of permanent magnets used in the hoist, it is necessary to generate the necessary torque with a small number of magnets, so the motor diameter is increased. There is a need. On the other hand, the hoisting machine is disposed in the corner portion at the upper part of the hoistway, and therefore, the hoisting machine interferes with the hoistway wall when the diameter of the motor increases.

[0005] The present invention has been made to solve the above-described problems, and it is not necessary to expand the space of the machine room in the hoistway even when the diameter of the motor of the drive device increases. An object of the present invention is to obtain an elevator apparatus that can be made thinner. Means for solving the problem

[0006] An elevator apparatus according to the present invention has a drive sheave, a drive apparatus disposed at the upper part of the hoistway so that the rotation shaft of the drive sheave is vertical, and a main rope wound around the drive sheave Group, the main rope group is suspended in the hoistway by the driving force of the drive device, and the car is lifted in the hoistway by the driving force of the driving device, and is suspended in the hoistway by the main rope group Of the first and second counterweights and hoistway There is a turning pulley group that is provided at the top and leads the main rope group from the drive sheave to the car, the first counterweight and the second counterweight, and the main rope group suspends the car and the first counterweight. A first main rope that lowers and a second main rope that suspends the car and the second counterweight, and the turning pulley group includes a first force rope that guides the first main rope from the drive sheave to the car. Side turning pulley and first main rope driving sheave force First counterweight side turning pulley and second main rope leading from drive sheave to cage Including a car-side turning pulley and a second counterweight-side turning pulley that guides the second main rope to the driving sheave force and the second counterweight, and the force of the first and second main ropes. Are suspended from each other on the vertical projection plane.

[0007] Further, the elevator apparatus according to the present invention has a drive sheave, and is strung on the drive apparatus and the drive sheave arranged at the upper part of the hoistway so that the rotation shaft of the drive sheave is vertical. The main rope group, which is suspended in the hoistway by the main rope group, is lifted in the hoistway by the driving force of the driving device, is suspended in the hoistway by the main rope group, and is driven by the driving force of the driving device. A counterweight installed in the upper part of the hoistway and a counterweight pulley installed in the upper part of the hoistway for guiding the main rope group from the drive sheave to the car and the counterweight. The turning pulley group includes a rope and a second main rope, and the turning pulley group includes a first car-side turning pulley that guides the first main rope to the driving sheave force cage, and a first main rope to the driving sheave force balancing weight. Leading first counterweight pulley A second car-side turning pulley that guides the second main rope to the driving sheave force car, and a second counterweight-side turning pulley that guides the second main rope to the driving sheave force and the counterweight. The suspension positions of the cages by the first and second main ropes are separated from each other on the vertical projection plane, and the suspension positions of the counterweights by the first and second main ropes are separated from each other on the vertical projection plane. is doing.

Brief Description of Drawings

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

2 is a cross-sectional view taken along the line Π-Π in FIG.

FIG. 3 is a front view showing an elevator apparatus according to Embodiment 2 of the present invention.

FIG. 4 is a plan view showing the elevator apparatus of FIG.

FIG. 5 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention. FIG. 6 is a plan view showing an elevator apparatus according to Embodiment 4 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 front view showing an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG. In Fig. 1, for the sake of simplicity, the ascending / descending stroke is shown significantly shorter, but the actual ascending / descending stroke is sufficiently longer than the height of the force.

In the figure, a car 2, a first counterweight 3 and a second counterweight 4 are provided in the hoistway 1. The car 2, the first counterweight 3 and the second counterweight 4 are moved up and down in the hoistway 1. Further, in the hoistway 1, a force guide rail (not shown) for guiding the raising / lowering of the car 2, the first counterweight 3 and the second counterweight 4, respectively, and the first counterweight guide A rail (not shown) and a second counterweight guide rail (not shown) are installed.

[0011] The cage 2 has a front surface 2a provided with a car doorway, a back surface 2b facing the front surface 2a, a first side surface 2c, and a second side surface 2d facing the first side surface 2c. Yes. The first counterweight 3 is arranged so as to face the first side face 2c when it is located at the same height as the car 2. The second counterweight 4 is arranged so as to face the second side surface 2d when positioned at the same height as the force 2.

[0012] Further, the first counterweight 3 is arranged on the vertical projection plane at a position closer to the back surface 2b than to the front surface 2a. Furthermore, the second counterweight 4 is arranged on the vertical projection plane at a position closer to the front surface 2a than to the rear surface 2b. That is, the first and second counterweights 3 and 4 are arranged so as to be shifted in the depth direction of the car 2 on the vertical projection plane.

A machine room 5 is provided in the upper part of the hoistway 1. In the machine room 5, there is installed a driving device (lifting machine) 6 that generates a driving force for raising and lowering the force 2 and the counterweights 3 and 4. The drive device 6 includes a drive device body 7 including a motor and a brake, and a drive sheave 8 rotated by the drive device body 7.

[0014] As the driving device 6, a thin hoisting machine having an axial dimension shorter than an outer diameter dimension perpendicular to the axial direction is used. In addition, the motor of the drive device 6 is a permanent magnet type synchronous motor. A motor is used. Further, the drive sheave 8 is directly rotated by the motor without passing through the reduction gear.

[0015] The drive device 6 is arranged so that the rotation axis of the drive sheave 8 is vertical (including substantially vertical). The driving device 6 is arranged so that the driving sheave 8 is positioned below the driving device body 7. Further, the driving device 6 is arranged so as to overlap the substantially center of the car 2 on the vertical projection plane. In other words, the driving device 6 is disposed almost at the center in the machine room 5.

[0016] A main rope group 10 for hanging the force 2 and the counterweights 3 and 4 is hung on the drive sheave 8. The main rope group 10 includes a plurality of first main ropes 11 (only one is shown in the figure) for suspending the force 2 and the first counterweight 3, and the force 2 and the second counterweight. It includes a plurality of second ropes 12 (only one is shown in the figure) from which 4 is suspended.

The number of first main ropes 11 is the same as the number of second main ropes 12. The total number of main ropes included in the main rope group 10 is determined by restrictions such as the main rope safety factor stipulated by law. The number of first and second main ropes 11 and 12 is 1 Z2 of the total number of main ropes.

[0018] The winding range R1 of the first main rope 11 with respect to the drive sheave 8 and the winding range R2 of the second main rope 12 are point-symmetric with respect to the rotational axis of the drive sheave 8. Further, the winding range R1 and the winding range R2 do not overlap in the circumferential direction of the drive sheave 8. That is, in this example, there are a few areas where neither the first main loop 11 nor the second main rope 12 is wound around the circumferential direction of the drive sheave 8. Therefore, the winding angles of the first and second main ropes 11 and 12 with respect to the drive sheave 8 are each less than 180 degrees.

In the machine room 5, a turning pulley group 14 for guiding the main rope group 10 from the drive sheave 8 to the car 2 and the counterweights 3, 4 is arranged. The turning pulley group 14 includes a first car-side turning pulley 15 that guides the first main rope 11 from the drive sheave 8 to the car 2 and a first main rope 11 that leads from the drive sheave 8 to the first balance. 1st counterweight-side turning pulley 16 leading to weight 3 and 2nd main-side turning pulley 17 leading 2nd main port 12 from drive sheave 8 to car 2 and 2nd main rope 12 The second counterweight side turning pulley 18 that leads the drive sheave 8 to the second counterweight 4 and It is included.

[0020] The turning pulleys 15-18 are arranged so that their rotation axes are horizontal. Further, the turning pulleys 15 to 18 are arranged so as to overlap the car 2 on the vertical projection plane.

The suspension positions 13a and 13b of the car 2 by the first and second main ropes 11 and 12 are separated from each other in the width direction and the depth direction of the car 2 on the vertical projection plane. The suspension positions 13a and 13b are point-symmetric with respect to the center of gravity of the car 2 on the vertical projection plane. Here, in the case where a plurality of first main ropes 11 are used, the suspension position 13a is the center of action of the force by all the first main ropes 11. The same applies to the hanging position 13b.

[0022] In such an elevator apparatus, the approach angle of the main ropes 11 and 12 to the drive sheave 8 is maximized by the main rope located on the outermost side in the turning pulleys 15-18. In contrast, in this example, the main rope group 10 is divided into the first and second main ropes 11 and 12, so that the number of main ropes wound around the turning pulleys 15-18 is half ( Or about half). Accordingly, the approach angle of the main rope located on the outermost side of the turning pulleys 15-18 to the drive sheave 8 can be reduced. In other words, the distance between the drive sheave 8 and the turning pulley 15-18 can be reduced by / J.

[0023] Thereby, the driving device 6 can be arranged near the center of the machine room 5, and even when the diameter of the motor of the driving device 6 is increased, interference with the wall portion of the machine room 5 can be avoided. There is no need to expand the space in the machine room 5. In other words, the drive device 6 can be further reduced in thickness.

[0024] The winding range R1 of the first main rope 11 and the winding range R2 of the second main rope 12 with respect to the drive sheave 8 are point-symmetric with respect to the rotation axis of the drive sheave 8. Therefore, the forces acting in the radial direction of the drive sheave 8 from the main ropes 11 and 12 are canceled out each other. As a result, the strength of the rotating shaft of the drive sheave 8, the bearing, and the frame that supports the bearing can be reduced, and the entire drive device 6 can be reduced in size and weight.

[0025] Embodiment 2.

3 is a front view showing an elevator apparatus according to Embodiment 2 of the present invention, and FIG. 4 is a plan view showing the elevator apparatus of FIG. In this example, the driving device 6 and the turning pulley group 14 are arranged in the upper part in the hoistway 1. Specifically, the drive device 6 and the turning probe No. 15-18 is arranged between the car 2 when stopped on the top floor and the ceiling la of the hoistway 1, that is, the elevator apparatus in this example is a machine room-less elevator.

The drive device 6 is arranged such that the drive sheave 8 is positioned on the drive device body 7. The driving device 6 is arranged at the same height as the turning pulleys 15-18. Furthermore, the drive device 6 is disposed near the center of the hoistway 1 on the vertical projection plane.

[0027] The car 2 is provided with first and second rope connecting portions 2e, 2f protruding from the first and second side faces 2c, 2d to the outside in the width direction of the car 2. The first and second main ropes 11 and 12 are connected to the first and second rope connecting portions 2e and 2f. Other configurations are the same as those in the first embodiment.

[0028] In such an elevator apparatus, the driving device 6 can be arranged near the center of the upper part in the hoistway 1. Therefore, it is not necessary to increase the space of the hoistway 1 even if the diameter of the motor of the driving device 6 is increased. Further, the driving device 6 can be made thinner. As a result, it is possible to prevent the vertical dimension and the planar dimension of the hoistway 1 from increasing.

[0029] In addition, since the drive device main body 7 is disposed below the drive sheave 8, maintenance and inspection work on the drive device main body 7 can be easily performed with the upper force of the car 2.

Furthermore, since the rope connection portions 2e and 2f are provided on the force 2, the distance between the turning pulleys 15 and 17 and the drive sheave 8 can be increased, and the main ropes 11 and 12 to the drive sheave 8 can be increased. The approach angle can be reduced.

[0030] Embodiment 3.

Next, FIG. 5 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention. In this example, the second counterweight 4 is disposed on the vertical projection plane at a position closer to the back surface 2b than to the front surface 2a. That is, the first and second counterweights 3, 4 are arranged at the same position in the depth direction of the car 2 on the vertical projection plane.

Accordingly, the winding range R1 of the first main rope 11 and the winding range R2 of the second main rope 12 with respect to the drive sheave 8 are point-symmetric with respect to the rotation axis of the drive sheave 8. It's gone. However, the winding range R1 and the winding range R2 overlap only partly in the circumferential direction of the drive sheave 8 (overlapping range R3). The overlapping range R3 is less than 1Z4 of the hanging range R1 or the winding range R2. The other configuration is the first embodiment. Or the same as 2.

[0032] In such an elevator apparatus, the wrapping range R1 and the wrapping range R2 do not largely overlap in the circumferential direction of the drive sheave 8, so that the radial direction of the drive sheave 8 from the main ropes 11 and 12 The forces acting on are partially canceled out (mostly). As a result, the strength of the rotating shaft of the drive sheave 8, the bearings, the frame supporting the bearings, and the like can be reduced, and the entire drive device 6 can be reduced in size and weight.

[0033] Embodiment 4.

Next, FIG. 6 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention. In the figure, a force 2 and a counterweight 21 are suspended in a hoistway 1 by a main rope group 10. The counterweight 21 has a rear facing portion 21a facing the rear surface 2b when positioned at the same height as the force 2 and a second side surface 2d when positioned at the same height as the force 2. A side facing portion 21b is integrally provided. The side facing portion 21b is perpendicular to the back facing portion 21a. That is, the planar shape of the counterweight 21 is L-shaped.

[0034] The suspension positions 22a and 22b of the counterweight 21 by the first and second main ropes 11 and 12 are separated from each other on the vertical projection plane. More specifically, the suspension position 22a of the counterweight 21 by the first main rope 11 is located on the rear facing portion 21a, and the suspension position of the counterweight 21 by the second main rope 12 is the side surface. Arranged in the facing portion 21b.

[0035] The winding range R1 of the first main rope 11 with respect to the drive sheave 8 and the winding range R2 of the second main rope 12 overlap in the circumferential direction of the drive sheave 8 only partially. (Overlap range R3). The overlapping range R3 is less than 1Z2 of the winding range R1 or the winding range R2. Other configurations are the same as those in the first or second embodiment.

[0036] In such an elevator apparatus, since the common counterweight 21 is suspended by the main ropes 11 and 12, only one counterweight 21 is required, and the number of parts such as the counterweight guide rail is reduced. In addition, the installation work can be facilitated.

[0037] In addition, since the winding range R1 and the winding range R2 overlap with each other only in part in the circumferential direction of the drive sheave 8, the force acting in the radial direction of the drive sheave 8 from the main ropes 11, 12 Is partially offset. As a result, the strength of the rotating shaft of the drive sheave 8, the bearing, and the frame supporting the bearing can be reduced. Can be planned.

In the above example, the force roving method shown in the 1: 1 roving type elevator apparatus is not limited to this, and this invention can be applied to, for example, a 2: 1 roving type elevator apparatus. For example, a car suspension car is mounted on the car and a counterweight suspension car is mounted on the counterweight, the main rope is wrapped around the car suspension car and the counterweight suspension car, and the end of the main rope is connected to the hoistway You may connect to the rope end connection part provided in the upper part.

Claims

The scope of the claims

[1] A drive device having a drive sheave and disposed above the hoistway so that the rotation axis of the drive sheave is vertical,

A main rope group wound around the drive sheave;

A car that is suspended in the hoistway by the main rope group and is raised and lowered in the hoistway by the driving force of the driving device;

First and second counterweights suspended in the hoistway by the main rope group and raised and lowered in the hoistway by the driving force of the driving device; and

A turning pulley group provided at an upper part of the hoistway and guiding the main rope group from the drive sheave to the car, the first counterweight and the second counterweight.

With

The main rope group includes a first main rope that suspends the car and the first counterweight, and a second main rope that suspends the force and the second counterweight, The turning pulley group includes a first force-side turning pulley that guides the first main rope from the drive sheave to the car, and the first main rope from the drive sheave to the first counterweight. A first counterweight-side turning pulley that guides the second main rope to the driving sheave force, a second car-side turning pulley that guides the force to the force, and the second main rope to the driving sheave force. A second counterweight-side turning pulley that leads to the second counterweight, and the suspension position of the car by the first and second main ropes is separated from each other on a vertical projection plane, An elevator apparatus characterized by that.

[2] A drive device having a drive sheave and disposed above the hoistway so that the rotation axis of the drive sheave is vertical,

A main rope group wound around the drive sheave;

A counterweight suspended in the hoistway by the main rope group and lifted and lowered in the hoistway by the driving force of the driving device; and

Provided in the upper part of the hoistway, the main rope group from the drive sheave to the cage and Turning pulleys leading to a counterweight

With

The main rope group includes a first main rope and a second main rope,

The turning pulley group guides the first main rope from the driving sheave to the car, and guides the first force side turning pulley and the first main rope from the driving sheave to the counterweight. A first counterweight-side turning pulley, a second car-side turning pulley for guiding the second main rope from the driving sheave to the force cage, and the second main rope from the driving sheave to the fishing Including a second counterweight-side turning pulley that leads to the counterweight,

The hanging positions of the car by the first and second main ropes are separated from each other on the vertical projection plane,

The elevator apparatus characterized in that the counterweight suspension positions of the first and second main ropes are spaced apart from each other on a vertical projection plane.

[3] The winding range of the first main rope around the drive sheave and the hooking range of the second main rope are point-symmetric with respect to the rotation axis of the drive sheave. The elevator apparatus according to claim 1 or 2.

[4] The winding range of the first main rope and the winding range of the second main rope with respect to the drive sheave overlap with each other only in the circumferential direction of the drive sheave. The elevator apparatus according to claim 1 or 2.

5. The suspending position of the car by the first and second main ropes is point-symmetric with respect to the center of gravity of the cage on the vertical projection plane. The elevator equipment described in 1.

6. The drive device and the turning pulley group are arranged between the cage and the ceiling of the hoistway when stopped on the top floor, according to claim 1 or 2. Elevator equipment.

[7] The car has a front surface and a back surface facing each other, and first and second side surfaces facing each other.

The counterweight includes a back-facing portion that faces the back when the force is at the same height and the first and second side surfaces when the force is at the same height. A side facing part that faces either side is provided on the body,

The suspension position of the counterweight by the first main rope is disposed at the back facing portion, and the suspension position of the counterweight by the second main rope is disposed at the side facing portion. The elevator apparatus according to claim 2, wherein the elevator apparatus is provided.