JPWO2006040813A1 - Elevator equipment - Google Patents

Abstract

In the elevator apparatus, 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 car and the second counterweight. Yes. The turning pulley group includes a first car-side turning pulley that guides the first main rope from the drive sheave to the car, and a first counterweight that guides the first main rope from the drive sheave to the first counterweight. A side turning pulley, a second car side turning pulley that guides the second main rope from the drive sheave to the car, and a second counterweight side that guides the second main rope from the drive sheave to the second counterweight And a turning pulley. The hanging positions of the car by the first and second main ropes are separated from each other on the vertical projection plane.

Description

  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.

  In a conventional elevator apparatus, a hoisting machine using a thin motor as a drive source is arranged at an upper part in a hoistway. The hoisting machine is arranged so that the rotation 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 disposed at a corner portion at the upper part of the hoistway (see, for example, Patent Document 1).

JP 2001-48450 A

  In the conventional elevator apparatus as described above, in order to reduce the number of permanent magnets used in the hoisting machine, it is necessary to generate a necessary torque with a small number of magnets, and thus it is necessary to increase the diameter of the motor. On the other hand, since the hoisting machine is disposed in the corner portion at the upper part of the hoistway, the hoisting machine interferes with the hoistway wall when the diameter of the motor increases.

  The present invention has been made to solve the above-described problems, and even if the diameter of the motor of the drive device increases, it is not necessary to enlarge the space of the hoistway or the machine room, and the drive device can be more It is an object to obtain an elevator apparatus that can be made thin.

  The elevator apparatus according to the present invention has a drive sheave and is arranged at the upper part of the hoistway so that the rotation axis of the drive sheave is vertical, a main rope group wound around the drive sheave, and a main rope A car that is suspended in the hoistway by a 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 raised and lowered in the hoistway by the driving force of the driving device. A first and a second counterweight, and a turning pulley group for guiding the main rope group from the drive sheave to the car, the first counterweight and the second counterweight, provided at the upper part of the hoistway; The rope group includes a first main rope that suspends the car and the first counterweight, and a second main rope that suspends the car and the second counterweight, and the turning pulley group includes the first main rope. Guide the main rope from the drive sheave to the cage A first car-side turning pulley, a first counterweight-side turning pulley that guides the first main rope from the drive sheave to the first counterweight, and a second main rope that guides the second main rope from the drive sheave to the car 2 car-side turning pulleys and a second counterweight-side turning pulley that guides the second main rope from the drive sheave to the second counterweight, and suspending the car by the first and second main ropes The positions are separated from each other on the vertical projection plane.

  Moreover, the 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 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 lifted in the hoistway by the driving force of the driving device, and is suspended in the hoistway by the main rope group, and is elevated in the hoistway by the driving force of the driving device. And a turning pulley group provided at the upper part of the hoistway for guiding the main rope group from the drive sheave to the car and the counterweight, wherein the main rope group includes the first main rope and the second main rope. And a turning pulley group includes a first car-side turning pulley that guides the first main rope from the drive sheave to the car and a first balance that guides the first main rope from the drive sheave to the counterweight. A weight side turning pulley; A second car-side turning pulley that guides the second main rope from the drive sheave to the car, and a second counterweight-side turning pulley that guides the second main rope from the drive sheave to the counterweight, The suspension position of the car by the second main rope is separated from each other on the vertical projection plane, and the suspension position of the counterweight by the first and second main ropes is separated from each other on the vertical projection plane. .

1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention. It is sectional drawing which follows the II-II line | wire of FIG. It is a front view which shows the elevator apparatus by Embodiment 2 of this invention. It is a top view which shows the elevator apparatus of FIG. It is a top view which shows the elevator apparatus by Embodiment 3 of this invention. It is a top view which shows the elevator apparatus by Embodiment 4 of this invention.

Preferred embodiments of the present invention will be described below 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 lifting / lowering stroke is shown to be significantly shorter, but the actual lifting / lowering stroke is sufficiently longer than the height of the car.

  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 car guide rail (not shown) for guiding the raising / lowering of the car 2, the first counterweight 3 and the second counterweight 4, and the first counterweight guide rail, respectively. (Not shown) and a second counterweight guide rail (not shown) are installed.

  The car 2 has a front face 2a provided with a car entrance, a back face 2b facing the front face 2a, a first side face 2c, and a second side face 2d facing the first side face 2c. The first counterweight 3 is disposed so as to face the first side surface 2 c when positioned at the same height as the car 2. The second counterweight 4 is disposed so as to face the second side surface 2d when positioned at the same height as the car 2.

  Further, the first counterweight 3 is disposed at a position closer to the back surface 2b than to the front surface 2a on the vertical projection plane. Further, the second counterweight 4 is arranged at a position closer to the front surface 2a than to the back surface 2b on the vertical projection plane. 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, a driving device (winding machine) 6 that generates a driving force for raising and lowering the car 2 and the counterweights 3 and 4 is installed. 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.

  As the driving device 6, a thin hoisting machine having an axial dimension shorter than an outer diameter dimension in a direction perpendicular to the axial direction is used. Further, as the motor of the driving device 6, a permanent magnet type synchronous motor is used. Furthermore, the drive sheave 8 is directly rotated by a motor without using a reduction gear.

  The drive device 6 is arranged so that the rotation axis of the drive sheave 8 is vertical (including substantially vertical). Further, the drive device 6 is arranged such that the drive sheave 8 is positioned below the drive device body 7. Further, the driving device 6 is disposed 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.

  A main rope group 10 for suspending the car 2 and the counterweights 3 and 4 is wound around 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 car 2 and the first counterweight 3, and the car 2 and the second counterweight 4. A plurality of second main ropes 12 (only one is shown in the figure) to be hung are included.

  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 defined by laws and regulations. The number of first and second main ropes 11 and 12 is ½ of the total number of main ropes.

  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. Further, the winding range R1 and the winding range R2 do not overlap in the circumferential direction of the drive sheave 8. In other words, in this example, there are a few areas where neither the first main rope 11 nor the second main rope 12 is wound around the circumferential direction of the drive sheave 8. Accordingly, the wrapping angles of the first and second main ropes 11 and 12 with respect to the drive sheave 8 are each less than 180 degrees.

  A turning pulley group 14 that guides the main rope group 10 from the drive sheave 8 to the car 2 and the counterweights 3 and 4 is disposed in the machine room 5. 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 the first main rope 11 from the drive sheave 8 to the first counterweight 3. A first counterweight-side turning pulley 16 that leads to the car, a second car-side turning pulley 17 that guides the second main rope 12 from the drive sheave 8 to the car 2, and a second main rope 12 from the drive sheave 8. A second counterweight-side turning pulley 18 leading to the second counterweight 4 is included.

  The turning pulleys 15 to 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 13 a is the center of action of force by all the first main ropes 11. The same applies to the hanging position 13b.

  In such an elevator apparatus, the approach angle of the main ropes 11 and 12 to the drive sheave 8 is the largest among the main ropes located on the outermost sides of the turning pulleys 15 to 18. On the other hand, in this example, since the main rope group 10 is divided into the first and second main ropes 11 and 12, the number of main ropes wound around the turning pulleys 15 to 18 is half (or about half). ) Therefore, the approach angle to the drive sheave 8 of the main rope located on the outermost side of the turning pulleys 15 to 18 can be reduced. In other words, the distance between the drive sheave 8 and the turning pulleys 15 to 18 can be reduced.

  As a result, the driving device 6 can be disposed near the center of the machine room 5, and even when the diameter of the motor of the driving device 6 increases, interference with the wall portion of the machine room 5 can be avoided. There is no need to expand 5 spaces. In other words, the drive device 6 can be further reduced in thickness.

  In addition, 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, so that the main rope The forces acting in the radial direction of the drive sheave 8 from 11, 12 are canceled out. Thereby, the strength of the rotating shaft of the drive sheave 8, the bearing, and the frame body that supports the bearing can be reduced, and the entire drive device 6 can be reduced in size and weight.

Embodiment 2. FIG.
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 pulleys 15 to 18 are arranged between the car 2 when stopped on the top floor and the ceiling 1a of the hoistway 1, that is, the elevator apparatus of this example is a machine. It is a roomless 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 disposed at the same height as the turning pulleys 15 to 18. Further, the driving device 6 is disposed near the center of the hoistway 1 on the vertical projection plane.

  The car 2 is provided with first and second rope connection portions 2e and 2f protruding from the first and second side faces 2c and 2d to the outside in the width direction of the car 2. The 1st and 2nd main ropes 11 and 12 are connected to the 1st and 2nd rope connection parts 2e and 2f. Other configurations are the same as those in the first embodiment.

  In such an elevator apparatus, the drive device 6 can be arranged near the center of the upper part in the hoistway 1. Therefore, it is not necessary to expand 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. Thereby, the increase in the vertical dimension or plane dimension of the hoistway 1 can be prevented.

In addition, since the drive device body 7 is disposed below the drive sheave 8, maintenance and inspection work on the drive device body 7 can be easily performed from the top of the car 2.
Furthermore, since the rope connection portions 2e and 2f are provided in the car 2, the distance between the turning pulleys 15 and 17 and the drive sheave 8 can be increased, and the approach angle of the main ropes 11 and 12 to the drive sheave 8 can be increased. Can be reduced.

Embodiment 3 FIG.
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 arranged at a position closer to the back surface 2b than to the front surface 2a on the vertical projection plane. That is, the first and second counterweights 3 and 4 are disposed 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 not point-symmetric with respect to the rotation axis of the drive sheave 8. However, 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 (overlapping range R3). The overlapping range R3 is less than ¼ of the winding range R1 or the winding range R2. Other configurations are the same as those in the first or second embodiment.

  In such an elevator apparatus, the wrapping range R1 and the wrapping range R2 do not overlap most of the circumferential direction of the drive sheave 8, so that the force acting in the radial direction of the drive sheave 8 from the main ropes 11, 12 Is partially (mostly) offset. Thereby, the strength of the rotating shaft of the drive sheave 8, the bearing, and the frame body that supports the bearing can be reduced, and the entire drive device 6 can be reduced in size and weight.

Embodiment 4 FIG.
Next, FIG. 6 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention. In the figure, a car 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 that faces the back surface 2b when positioned at the same height as the car 2, and a side surface facing the second side surface 2d when positioned at the same height as the car 2. The part 21b is provided integrally. 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.

  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. Specifically, the suspension position 22a of the counterweight 21 by the first main rope 11 is disposed on the back facing portion 21a, and the suspension position of the counterweight 21 by the second main rope 12 is side-facing. It arrange | positions at the part 21b.

  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 overlap with each other only in a part in the circumferential direction of the drive sheave 8 (overlap range R3). The overlapping range R3 is less than ½ of the winding range R1 or the winding range R2. Other configurations are the same as those in the first or second embodiment.

  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 may be reduced. In addition, the installation work can be facilitated.

  Further, since the wrapping range R1 and the wrapping range R2 partially overlap with each other 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 and 12 is partially Is offset by Thereby, the strength of the rotating shaft of the drive sheave 8, the bearing, and the frame body that supports the bearing can be reduced, and the entire drive device 6 can be reduced in size and weight.

In the above example, the 1: 1 roping type elevator device is shown. However, the roping method is not limited to this, and the present invention can be applied to, for example, a 2: 1 roping type elevator device. For example, a car suspension car is mounted on the car and a counterweight suspension car is mounted on the counterweight. You may connect to the rope end connection part provided in the.

Claims (7)

A drive device having a drive sheave and disposed at the upper part of the hoistway so that the rotation axis of the drive sheave is vertical;
A main rope group wound around the drive sheave;
A car suspended in the hoistway by the main rope group, and 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 provided above the hoistway, A turning pulley group for guiding a main rope group from the drive sheave to the car, the first counterweight and the second counterweight;
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 car and the second counterweight,
The turning pulley group guides the first main rope from the drive sheave to the car and guides the first car-side turning pulley and the first main rope from the drive sheave to the first counterweight. A first counterweight-side turning pulley, a second car-side turning pulley that guides the second main rope from the drive sheave to the car, and the second main rope from the drive sheave to the second Including a second counterweight-side turning pulley that leads to the counterweight,
The elevator apparatus characterized in that the suspension position of the car by the first and second main ropes is separated from each other on a vertical projection plane. A drive device having a drive sheave and disposed at the upper part of the hoistway so that the rotation axis of the drive sheave is vertical;
A main rope group wound around the drive sheave;
A car suspended in the hoistway by the main rope group, and raised and lowered in the hoistway by the driving force of the driving device;
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 at the upper part of the hoistway, and driving the main rope group A turning pulley group that leads from the sheave to the above cage and counterweight,
The main rope group includes a first main rope and a second main rope,
The turning pulley group includes a first car-side turning pulley that guides the first main rope from the driving sheave to the car, and a first car that guides the first main rope from the driving sheave to the counterweight. A counterweight-side turning pulley, a second car-side turning pulley that guides the second main rope from the drive sheave to the car, and a second lead that guides the second main rope from the drive sheave to the counterweight. 2 counterweight side turning pulleys,
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 suspension position of the counterweight by the first and second main ropes is separated from each other on a vertical projection plane.   The winding range of the first main rope and the winding range of the second main rope with respect to the drive sheave are point-symmetric with respect to the rotation axis of the drive sheave. Or the elevator apparatus of Claim 2.   2. 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 partially in the circumferential direction of the drive sheave. Or the elevator apparatus of Claim 2.   3. The elevator according to claim 1, wherein 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 car on a vertical projection plane. apparatus.   3. The elevator apparatus according to claim 1, wherein the driving device and the turning pulley group are disposed between the cage and the ceiling of the hoistway when stopped on the top floor. . 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 car is located at the same height, and the first and second side faces when the car is located at the same height. A side facing part facing one side is provided integrally,
The position where the counterweight is suspended by the first main rope is disposed at the back facing portion, and the position where the counterweight is suspended by the second main rope is disposed at the side facing portion. The elevator apparatus according to claim 2, wherein:

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