WO2005073120A1

WO2005073120A1 - Elevator system

Info

Publication number: WO2005073120A1
Application number: PCT/JP2004/000894
Authority: WO
Inventors: Atsushi Mitsui; Shiroh Ikeda
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-01-30
Filing date: 2004-01-30
Publication date: 2005-08-11
Also published as: EP1710191A1; EP1710191B1; CN1723167A; EP1710191A4; JPWO2005073120A1; CN100522782C

Abstract

An elevator system in which shaft devices requiring maintenance/inspection work are disposed at an upper part in the elevator shaft. At the upper part in the elevator shaft, an access platform serving as a scaffold for performing maintenance/inspection work of the shaft devices is disposed. The access platform is disposed to avoid interference with the car when the car moves to the top movement position in the shaft and to overlap with the car in the vertical projection plane.

Description

Elevator overnight device

Technical field

TECHNICAL FIELD The present invention relates to an elevator apparatus in which hoistway devices requiring maintenance and inspection work are arranged at an upper part in a hoistway. Background art

For example, in a conventional elevator apparatus disclosed in Japanese Patent Application Laid-Open No. 2000-238971, a driving device is installed in a machine room installed in a hoistway. The machine room is located directly above the counterweight in the hoistway. The floor of the machine room is installed at the same height as the landing floor on the top floor where cars can be stopped.

In such an elevator system, since the lifting range of the counterweight is limited by the machine room, the vertical dimension of the counterweight must be reduced. As a result, the horizontal cross-sectional area of the counterweight increased, and the horizontal cross-sectional area of the hoistway had to be increased.

There is also a method of performing maintenance and inspection work on the drive installed in the hoistway from above the car, but in this case, the work space may be limited, and a suitable position for the drive Could not perform maintenance work. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a leveling device that can improve the workability of maintenance and inspection work while saving space in a hoistway. The purpose is to:

An elevator apparatus according to the present invention includes a hoistway device disposed at an upper part in a hoistway, a car that is raised and lowered in the hoistway, and a work table disposed at an upper part in the hoistway, The workbench is arranged so as to avoid interference with the car when the car moves to the uppermost position in the hoistway, and to overlap with the car in the vertical projection plane. 2004/000894 Brief description of the drawings

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

FIG. 2 is a cross-sectional view taken along the line I I—II of FIG. 1,

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

FIG. 4 is a cross-sectional view taken along the line IV—IV in FIG. 3,

FIG. 5 is a horizontal sectional view of an elevator apparatus according to Embodiment 3 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 side view showing an elevator device (a machine room-less elevator device) according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II of FIG.

In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails 3 (omitted in FIG. 1) are installed in a hoistway 1. The car 4 is guided up and down the hoistway 1 by the car guide rail 2. 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 in the depth direction of the hoistway 1. At the bottom of the hoistway 1, a car-side shock absorber (not shown) for receiving the car 4 and a counterweight buffer 6 for receiving the counterweight 5 are installed.

A pair of support beams 7 are fixed to the upper part (top) in the hoistway 1. The support beams 7 are arranged parallel to the width direction of the car 4 (the frontage direction of the landing entrance 8). On the support beam 7, a machine stand 9 is erected.

On the machine base 9, a driving device (winding machine) 10 as a hoistway device for raising and lowering the car 4 and the counterweight 5 is installed. The driving device 10 has a driving device main body 11 including a motor and a brake, and a driving sheave 12 rotated by the driving device main body 11. The rotating shaft of the drive sheave 12 is supported at both ends. The rotation axis of the drive sheave 12 is parallel to the width direction of the car 4 and is horizontal. Further, the driving device 10 is arranged so as to overlap with the car 4 in the vertical projection plane. That is, the driving device 10 is disposed directly above the car 4.

The machine stand 9 supports a rotatable deflecting wheel 13 which is a hoistway device. The rotation axis of the deflecting wheel 13 is parallel to the rotation axis of the drive sheave 12.

A plurality of main ropes 14 are wound around the drive ship 12 and the deflector 13. The main rope 14 has a first end 14 a connected to the upper beam 4 a of the car 4 and a second end 14 b connected to the upper part of the counterweight 5. The car 4 and the counterweight 5 are suspended in the hoistway 1 by a 1: 1 roving method by the main rope 14.

At the upper part (top) in the hoistway 1, a work table 15 on which an operator is to be mounted when performing maintenance work on the drive device 10 is installed. Worktable 15 is positioned so that it does not interfere with car 4 when car 4 moves to the uppermost position in hoistway 1 and partially overlaps car 4 in the vertical projection plane. Have been.

That is, when the counterweight 5 collides with the counterweight buffer 6 on the counterweight side and the car 4 is pushed up, the workbench 15 can also operate the equipment (door device, etc.) on the car 4 ). Specifically, the work table 15 is disposed at one corner of the hoistway 1 on the rear side in the front-rear direction.

In addition, the work table 15 includes a pair of fixed beams 16 fixed between the pair of support beams 7, a floor portion 17 fixed on the fixed beams 16 and a floor portion 17 fixed on the floor portion 17. Handrail 18. The fixed beam 16 is arranged parallel to the depth direction of the car 4. The floor 1 が is provided with an outlet 17 a and a lid 19 for opening and closing the outlet 17 a. In addition, a lid detection switch 19a for detecting that the lid 19 is opened is provided on the floor 17.

The operation of the driving device 10 is controlled by a control device (control panel) 20. The control device 20 is disposed, for example, at an upper portion or a lower portion in the hoistway 1. A signal from the lid detection switch 19a is input to the control device 20. The control device 20 disables the movement of the car 4 when the lid 19 is open.

In such an elevator system, the car 4 is moved to the upper part of the hoistway 1, and the worker moves from the car 4 to the worktable 15, and moves to the drive device 10 and the deflector 13. Maintenance work can be carried out for the equipment. In addition, the work table 15 Since it is arranged so as not to interfere with the weight 5, the vertical dimension of the counterweight 5 is not restricted by the workbench 15, and the horizontal cross-sectional area of the hoistway 1 is increased by the counterweight 5. Can be prevented. That is, the space of the hoistway 1 can be saved.

Furthermore, since the floor portion 17 can be extended outside the area of the car 4 in the vertical projection plane, a wider working space can be secured than when performing maintenance work on the car 4. The workability of maintenance and inspection work can be improved.

Furthermore, if the car 4 cannot be moved for any reason, it must move onto the car 4 from the exit 17a and move into the car 4 from the rescue exit provided on the ceiling of the car 4, or the next elevator Can be moved on the basket.

Also, a lid detection switch 19a is provided on the floor 17 so that the basket 4 cannot be moved when the lid 19 is open, so that during the movement from the exit 17a The movement of the car 4 can be more reliably prevented. Embodiment 2

Next, FIG. 3 is a side view showing an elevator apparatus according to Embodiment 2 of the present invention, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. In the first embodiment, the driving device 10 is mounted on the machine base 9, but in the second embodiment, the driving device 10 is fixed below the machine base 9.

In addition, the machine stand 9 includes a car return wheel 21 and a counterbalance device, which are hoistway devices that guide the car 4 and the counterweight 5 by reversing the direction of the main ropes 14 extending from the drive sheave 12. It is equipped with a backside car 2 2. Therefore, the load from the main rope 14 to the drive sheave 12 acts upward.

The work table 15 is suspended from the support beam 7. That is, the floor 17 is the supporting beam

It is located below the fixed beam 16 erected between 7. Other configurations are the same as those of the first embodiment. Therefore, the work platform 15 is designed to avoid interference with the car 4 when the car 4 moves to the uppermost movement position in the hoistway 1, and to partially overlap the car 4 in the vertical projection plane. Are located.

According to such a configuration, the driving device 10 and the return vehicle 2 with respect to the ceiling area of the car 4 Even when the occupied area of 1, 22 is large, it can be easily moved from the top of the car 4 to the work table 15. Embodiment 3.

Next, FIG. 5 is a horizontal cross-sectional view of the erebe apparatus according to Embodiment 3 of the present invention. In the figure, a worktable 15 is provided with a door 23 that can be opened and closed to be opened when the worktable 15 is moved onto the worktable 15. The doorway 23 functions as a part of the handrail 18 when closed.

Further, the entrance door 23 is provided with a door detection switch 24 for detecting that the entrance door 23 is opened. The signal from the door detection switch 24 is sent to the controller 20 (see FIG. 1). The control device 20 disables the movement of the car 4 when the entrance door 23 is open. Other configurations are the same as those in the first embodiment. According to such a configuration, when the entrance door 23 is opened and the user enters and exits the work table 15, the car 4 is not moved and the access to the work table 15 is stabilized. It can be carried out. In the above example, the drive device 10, the deflecting vehicle 13 and the return vehicles 21 and 22 are shown as the hoistway devices, but the hoistway devices are not limited to these. For example, even when the drive unit is located at the bottom of the hoistway, hoistway equipment such as a control panel, a governor or a return vehicle is located at the top of the hoistway, and maintenance and inspection of the hoistway equipment are performed. If work is required, the work table of the present invention may be provided in the hoistway.

Also, in the above example, the 1: 1 roving type elevator device is shown, but the present invention can be applied to other mouth-buffing type erepeater devices such as a 2: 1 roving method.

Further, in the above example, only one work table 15 is provided, but a plurality of work tables in the hoistway may be provided.

Furthermore, in the above example, the case of moving from the top of the car 4 to the platform 15 was shown.However, the platform was moved from the landing to the platform through a dedicated entrance, or during maintenance and inspection work, between the entrance and the platform. Alternatively, a scaffold may be temporarily provided and moved. In the above example, the driving device 10 is arranged so that the rotation axis of the driving sheave 12 is horizontal. However, the driving device may be arranged such that the rotation axis of the driving sheave is vertical or almost vertical. Good. However, it is preferable that the drive device is arranged such that a part requiring high maintenance and inspection work such as a brake is located on the workbench side. To put it the other way around, it is preferable to arrange a workbench near a part where maintenance and inspection work is frequently performed.

Claims

The scope of the claims

1. The hoistway equipment located at the top of the hoistway,

A car that is raised and lowered in the hoistway, and

A workbench located above the hoistway

With

The workbench is arranged so that when the car moves to the uppermost movement position in the hoistway, the car is prevented from interfering with the car and overlaps the car in a vertical projection plane. All night equipment.

2. The elevator apparatus according to claim 1, wherein the hoistway device is a driving device that raises and lowers the car.

3. The elevator apparatus according to claim 1, wherein the worktable is disposed so as to partially overlap the basket in a vertical projection plane.

4. The elevator apparatus according to claim 1, wherein the work table has a floor provided with an exit and a lid for opening and closing the exit. .

5. The apparatus further includes a lid detection switch for detecting that the lid is opened, and a control device for controlling operation of the driving device in accordance with a signal from the lid detection switch. 5. The elevator apparatus according to claim 4, wherein the car is not allowed to move when the car is being moved.

6. The device according to claim 1, wherein the work table has an entrance door that is opened when the work table is moved onto the work table.

7. A door detection switch for detecting that the entrance door is opened, and a control device for controlling the operation of the driving device in accordance with a signal from the door detection switch, 7. The elevator apparatus according to claim 6, wherein the control device disables the movement of the car when the entrance door is open.