WO2005056457A1

WO2005056457A1 - Elevator apparatus

Info

Publication number: WO2005056457A1
Application number: PCT/JP2003/015886
Authority: WO
Inventors: Takenobu Honda
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2003-12-11
Filing date: 2003-12-11
Publication date: 2005-06-23
Also published as: EP1693330A4; CN100345742C; EP2551228A1; JPWO2005056457A1; EP1693330A1; CN1723169A

Abstract

An elevator apparatus wherein a car and first and second balance weights are lifted in a hoistway. A pair of car guide rails guiding the lifting of the car are installed in the hoistway. The car comprises first and second side surface parts opposed to each other. The car guide rails are installed to face the first and second side surface parts. The first and second balance weights are disposed on the front side of the car guide rails in the car depth direction. A first hoist is disposed just above the first balance weight. A second hoist is disposed just above the second balance weight.

Description

Elevator overnight device

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traction-type elevator device that raises and lowers a car and a counterweight suspended in a hoistway by a main rope by a driving device.

For example, in a conventional elevator apparatus disclosed in Japanese Patent Application Laid-Open No. H11-3110372, two counterweights are arranged on both sides of a car. These counterweights and cages are suspended in the hoistway by a one-by-one bing system, and are lifted and lowered by two drive mechanisms.

However, in the above-mentioned conventional elevator device, the two counterweights are arranged behind the cage guide rails. If they were not seen from the sight, it was not possible to secure a sufficient field of view behind the car. Therefore, there is a need for an efficient arrangement of counterweights that makes more efficient use of the space in the hoistway. Disclosure of the invention

The present invention has been made in order to solve the above-described problems, and has as its object to obtain an elevator device that can more effectively use a space in a hoistway and can arrange a counterweight more efficiently. And

An elevator apparatus according to the present invention has first and second side faces facing each other, a car that is raised and lowered in the hoistway, and a car inside the hoistway facing the first and second side faces. And a pair of car guide rails that guide the car up and down, and are arranged opposite to the first side surface on the vertical projection plane, and are located in front of the car guide rails in the depth direction of the car. The first counterbalance that is placed and lifted in the hoistway The second balance, which is located opposite to the second side surface on the vertical projection plane and is located in front of the car guide rail in the depth direction of the car, and is raised and lowered in the hoistway A main port group for suspending the weight, the car, the first counterweight and the second counterweight in the hoistway, and a drive ship on which the main port group is wound; And a driving device disposed directly above at least one of the first and second counterweights to raise and lower the car, the first counterweight and the second counterweight. Brief description of the drawings ''

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

FIG. 2 is a plan view with the drive unit of FIG. 1 removed,

FIG. 3 is a right side view showing a main part of FIG. 1,

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

FIG. 5 is a side view showing the main part of FIG. 4,

FIG. 6 is a front view showing a drive device of the elevator apparatus according to Embodiment 3 of the present invention. FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention.

FIG. 8 is a plan view showing the driving device of FIG.

FIG. 9 is a front view showing the counterweight of FIG. 7,

FIG. 10 is a sectional 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 plan view showing an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a plan view showing a state in which the driving device in FIG. 1 is removed.

In the figure, a pair of car guide rails 2, a pair of first counterweight guide rails 3, and a pair of second counterweight guide rails 4 are installed in the hoistway 1. The car 5 is moved up and down the hoistway 1 along the car guide rail 2. First The counterweight 6 is moved up and down in the hoistway 1 along the first counterweight guide rail 3. The second counterweight 7 is moved up and down the hoistway 1 along the second counterweight guide rail 4.

On the vertical projection plane, the car guide rails 2 are arranged such that a straight line connecting them extends parallel to the frontage direction of the car 5. The first counterweight guide rails 3 are arranged such that a straight line connecting them extends parallel to the depth direction of the car 5. The second counterweight guide rails 4 are arranged such that a straight line connecting them extends parallel to the depth direction of the car 5.

The car 5 has first and second side faces 5a and 5b facing each other, a front face 5c provided with a car entrance 5e, and a rear face 5d facing the front face 5c. are doing. The car guide rail 2 is installed in the hoistway 1 so as to face the first and second side surfaces 5a and 5b, respectively. The car entrance 5e is opened and closed by a pair of car doors 5f.

On the vertical projection plane, the first counterweight 6 is disposed so as to face the first side surface 5a. Further, the first counterweight 6 is disposed between the first side face 5a and the hoistway wall 1a facing the first side face 5a.

On the vertical projection plane, the second counterweight 7 is disposed so as to face the second side surface 5b. The second counterweight 7 is disposed between the second side surface 5b and the hoistway wall 1b facing the second side surface 5b.

The first and second counterweights 6, 7 are arranged in the depth direction of the car 5 in front of the car guide rail 2 and behind the front face 5c. A driving device 8 that raises and lowers the car 5 and the first and second counterweights 6 and 7 is disposed in an upper portion of the hoistway 1. The drive unit 8 has a built-in motor. The driving device 8 includes a first hoist 9 disposed directly above the first counterweight 6 and a second hoist disposed directly above the second counterweight 7. Machine 10.

The first and second winding machines 9 and 10 are arranged so as to overlap the first and second counterweights 6 and 7 but not to the basket 5 in the vertical projection plane. The first hoisting machine 9 has a motor and a first drive sheave 11. The second hoisting machine 10 has a motor and a second drive shape 12. As each of the hoists 9, 10 a thin hoist whose axial dimension is smaller than the motor diameter is used. Further, the hoisting machines 9 and 10 are arranged such that the rotation axes of the driving sheeps 11 and 12 extend horizontally.

A main rope group 13 is wound around the first and second drive sheeps 11 and 12. The main rope group 13 is composed of a first main rope 14 wound around the first driving sheave 11 and a second main rope 1 wound around the second driving sheep 12. And 5.

A first rope connecting portion 16 is provided at an end of the lower side of the car 5 on the side of the first side surface portion 5a. A second rope connecting portion 17 is provided at an end of the lower side of the car 5 on the side of the second side surface 5b.

One end of the first main rope 14 is connected to the first rope connecting portion 16, and the other end of the first main rope 14 is connected to the upper part of the first counterweight 6. One end of the second main rope 15 is connected to the second rope connection 17, and the other end of the second main rope 15 is connected to the upper part of the second counterweight 7.

The car 5 and the first counterweight 6 are suspended in the hoistway 1 in a 1: 1 rowing manner by the first main port 14. The car 5 and the second counterweight 7 are suspended in the hoistway 1 by the second main rope 15 in a one-to-one bing system.

In the vertical projection plane, a straight line connecting the suspension point of the car 5 by the first main rope 14 and the suspension point of the car 5 by the second main rope 15 passes through the center of gravity of the car 5. That is, the car 5 is suspended substantially at the position of the center of gravity.

The first and second side surfaces 5a and 5b of the car 5 are provided with openable and closable inspection ports 18 and 19, respectively. The first and second hoisting machines 9, 10 are respectively arranged at positions where maintenance and inspection can be performed from the inside of the car 5 through the inspection ports 18 and 19, respectively. That is, when the car 5 is moved to the uppermost part in the hoistway 1, the first and second hoisting machines 9, 10 face the first and second side face parts 5a, 5b. Are located in

The car guide rail 2, the counterweight guide rails 3, 4, the counterweights 6, 7, the driving device 8, and the main rope group 13 are located on the vertical projection plane with respect to the center line of the car 5 in the frontage direction. They are arranged symmetrically. FIG. 3 is a right side view showing a main part of FIG. A support 20 is fixed to the upper part of the car guide rail 2 and the first counterweight guide rail 3. The first winding machine 9 is mounted on a support 20. The second winding machine 10 is also supported on the same support on the opposite side of the car 5.

A control device (control panel) 21 for controlling the operation of the drive device 8 is disposed above the first hoisting machine 9. 1 and 2, the control device 21 is not shown. The load of the second hoisting machine 9 and the control device 21 is supported by the car guide rail 2 and the first counterweight guide rail 3 via the support base 20.

The control device 21 is disposed at a position where maintenance and inspection can be performed from inside the car 5 through the inspection port 18. That is, the control device 21 is arranged so as to face the first side surface portion 5a when the car 5 is moved to the uppermost portion in the hoistway 1.

The operation mode of the first and second winding machines 9, 10 by the control device 21 includes a first mode in which both the first and second winding machines 9, 10 generate driving force. And a second mode in which only the first winding machine 9 generates a driving force. In the second mode, the brake of the second hoisting machine 10 is released, and the second drive chip 12 is idled.

The operation mode of the control device 21 is switched according to the load in the car 5. For example, in the no-load or full-load state, the first mode is applied because the load difference between the car 5 and the first and second counterweights 6, 7 is large. In the half-load state, the second mode is applied because the difference in load between the car 5 and the first and second counterweights 6 and 7 is reduced.

In such an elevator device, the counterweight is divided into the first and second counterweights 6 and 7, and is arranged in a narrow space in front of the car guide rail 2. The counterweights 6 and 7 can be arranged more efficiently by making more effective use of the internal space. In addition, even if the portions behind the car guide rails 2 on the first and second side portions 5a and 5b are made transparent, the counterweights 6 and 7 cannot be seen from the inside of the car 5, so that the observing elevator is not provided. It can broaden the field of view when applied in the evening.

Further, since two winding machines 9, 10 are used as the driving device 8, the size of each of the winding machines 9, 10 can be reduced, and the installation space can be reduced. Moreover, hoisting Since thin winding machines were used as the machines 9 and 10, the first and second winding machines were provided between the first and second side portions 5a and 5b and the hoistway walls la and 1b. 9 and 10 can be arranged, and the vertical dimension of the hoistway 1 can be reduced.

Further, the first and second hoisting machines 9 and 10 are operated by switching between the first mode and the second mode according to the load in the car 5, so that power saving can be achieved. In monkey.

Furthermore, since the control device 21 is disposed above the drive device 8, the space in the hoistway 1 can be more effectively used, and the maintenance work for the drive device 8 and the control device 21 can be performed in the same place. And work efficiency can be improved.

In addition, since the inspection ports 18 and 19 are provided on the first and second side surfaces 5a and 5b, the first and second counterweights 6 and 7, the driving device 8 and the control device 21 are provided. Maintenance and inspection work can be performed from inside the car 5, and work efficiency can be improved.

The operation mode by the control device 21 is not limited to the first and second modes described above.

Further, the number of each of the first and second main ropes 14 and 15 is not particularly limited.

Further, in the first embodiment, the loads of the drive device 8 and the control device 21 are received by the guide rails 2, 3, and 4, but may be received by, for example, a support beam fixed to a building. Furthermore, in Embodiment 1, two counterweights are used, but three or more counterweights can be used. Embodiment 2

Next, FIG. 4 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention, FIG. 5 is a side view showing a main part of FIG. 4, and FIG. . In the figure, a hoistway 1 is provided with first and second guide ropes 22 and 23 for guiding the first and second counterweights 6 and 7 up and down. The first and second guide ropes 22 and 23 are extended in the hoistway 1 so as to extend in the vertical direction of the first and second counterweights 6 and 7, that is, in the vertical direction. I have. First and second The upper ends of the guides 22 and 23 are connected to the support 20. The lower ends of the first and second guide ropes 22 and 23 are connected to the lower part in the hoistway 1. At the lower part of the hoistway 1, a tension applying means (not shown) for applying tension to the guide ropes 22, 23 is provided.

The first and second counterweights 6 and 7 are provided with guide holes through which the first and second guide ropes 22 and 23 penetrate. The first and second counterweight guide rails 3, 4 are used only one each. Other configurations are the same as those of the first embodiment.

In such an elevator apparatus, since the first and second guide ropes 22, 23 are used, a part of the counterweight guide rails 3, 4 can be omitted. Since the counterweight guide rails 3 and 4 are constructed by joining a plurality of rails vertically, the number of parts can be reduced if a part of the counterweight guide rails 3 and 4 can be omitted. In addition to this, installation labor can be greatly reduced and costs can be reduced. ,

Further, by omitting a part of the counterweight guide rails 3 and 4, the installation space of the entire elevator apparatus can be reduced. Embodiment 3.

Next, FIG. 6 is a front view showing a driving device of an elevator apparatus according to Embodiment 3 of the present invention. In the figure, a plurality of main ropes 14 are wound around a first drive sheave 11. Each main rope 14 is constituted by twisting a plurality of strands. Further, a plurality of main ropes 14 having different strand twisting directions are wound around the first drive sheave 11. The other configuration is the same as that of the second embodiment. A plurality of main ropes 15 whose strands are twisted in different directions are also wound around the second drive sheep 12.

In this way, the main ropes 14 and 15 that suspend the respective counterweights 6 and 7 are constructed by combining two types of wire ropes having different twisting directions from each other.

14 and 15 themselves can offset the rotational torque they try to rotate. Even when the guide ropes 22 and 23 guide the lifting and lowering of the counterweights 6 and 7, The deflection of the counterweights 6, 7 can be suppressed, and the counterweights 6, 7 can be raised and lowered stably.

In the case of a main rope for suspending one counterweight, it is preferable that the number of right-hand stranded wire openings and the number of left-hand stranded wire ropes be the same. Embodiment 4.

Next, FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention, FIG. 8 is a plan view showing the drive device of FIG. 7 removed, and FIG. 9 shows the counterweight of FIG. It is a front view.

In the figure, the first counterweight 6 is guided by a plurality of (here, two) first guide ropes 2 2 stretched in the hoistway 1, and is lifted in the hoistway 1. You. A pair of guide grooves 6 a into which the first guide rope 22 is inserted are provided at both ends in the width direction of the first counterweight 6.

The second counterweight 7 is guided by a plurality (two in this case) of second guides 23 stretched in the hoistway 1 and is moved up and down in the hoistway 1. A pair of guide grooves 7 a into which the second guide rope 23 is inserted are provided at both ends in the width direction of the second counterweight 7.

In the hoistway 1, there are provided a plurality of stoppers for restricting horizontal deflection of the first and second counterweights 6 and 7 by engaging the first and second counterweights 6 and 7. 24 are installed. Each stopper 24 is made of, for example, a rigid body such as a metal, and is fixed to the hoistway walls 1a and 1b via a mounting member such as a bracket.

The tip of the stopper 24 is inserted into the guide grooves 6a and 7a. Normally, a gap is provided between the stopper 24 and the guide grooves 6a, 7a, and the counterweights 6, 7 are allowed to deflect within the gap. Further, the stoppers 24 are arranged at an interval in the vertical direction as shown in FIG.

Directly above the second counterweight 7 is a rotatable return wheel 25. The return wheel 25 has a second main rope 15 wound thereon. That is, in the first embodiment, two hoists 9 and 10 are used, but in the fourth embodiment, only one hoist 9 is used. Other configurations are the same as those in the first embodiment. In such an elevator system, the lifting and lowering of the counterweights 6, 7 is guided only by the guide ropes 22, 23 without using the counterweight guide rails. Significant reductions can be made and costs can be reduced.

In addition, since the stoppers 24 are used, even if the building shakes due to an earthquake or the like, it is possible to restrict the horizontal movement of the counterweights 6, 7 and the counterweights 6, 7 Collision with 5 and hoistway equipment can be prevented.

In addition, there may be a certain gap between the stopper 24 and the counterweights 6 and 7, and the stop ring 24 does not need to be provided continuously over the entire lifting stroke of the counterweights 6 and 7. The stopper 24 can be configured at a lower cost than the counterweight guide rail.

Furthermore, since the driving device 8 is constituted by one hoisting machine 9 and only the return wheel 25 is disposed on the second counterweight 7 side, the cost can be reduced and the control can be simplified. Can be Embodiment 5

Next, FIG. 10 is a sectional view showing a main part of an elevator apparatus according to Embodiment 5 of the present invention. In this example, a plurality (here, six) guide ropes 22 are stretched so as to surround the counterweight 6. That is, the guide ropes 22 are arranged not only at both ends in the width direction of the counterweight 6 but also on both sides in the thickness direction (the car 5 side and the anti-car 5 side). The upper end of the guide rope 22 is connected to a support fixed to the car guide rail or a support beam fixed to the building.

In this way, by surrounding the counterweight 6 with the guide rope 22, the deflection of the counterweight 6 in the horizontal direction can be suppressed with a simple configuration.

In the fifth embodiment, the guide ropes 22 are arranged on both sides of the counterweight 6 in the thickness direction, but the arrangement method of the guide ropes 22 is not limited to this. For example, the number of guide ropes 22 on the anti-car 5 side may be smaller than that on the car 5 side, or the guide ropes 22 on the anti-car 5 side may be omitted.

Claims

The scope of the claims

1. A car having first and second side portions facing each other, and a car which is lifted and lowered in the hoistway, is installed in the hoistway so as to face the first and second side portions, and A pair of car guide rails for guiding

A first fishing boat which is arranged on the vertical projection surface so as to face the first side surface portion, and which is arranged on the front side of the car guide rail in the depth direction of the car, and which is raised and lowered in the hoistway; Weight

A second fishing boat, which is arranged on the vertical projection surface so as to face the second side surface portion, is arranged on the front side of the car guide rail in the depth direction of the car, and moves up and down in the hoistway. Weight

A main rope group for suspending the car, the first counterweight and the second counterweight in the hoistway, and

A drive sheave around which the main rope group is wound, and disposed directly above at least one of the first and second counterweights; the car and the first counterweight; And a drive device for raising and lowering the second counterweight

Elevator overnight device equipped with.

2. The elevator apparatus according to claim 1, wherein the first and second counterweights are arranged behind a front portion of the car in a depth direction of the car.

3. The elevator device according to claim 1, wherein the drive device is a thin-type winding machine having an axial dimension smaller than a motor diameter.

4. The driving device comprises: a first hoist disposed directly above the first counterweight; and a second hoist disposed directly above the second counterweight. 2. The apparatus according to claim 1, further comprising a device.

5. The first and second hoisting machines, depending on the load in the car, the first and second hoisting machines Switching between a first mode in which a driving force is generated in both of the two winding machines and a second mode in which a driving force is generated in only one of the first and second winding machines. The elevator apparatus according to claim 4, which is operated.

6. The elevator apparatus according to claim 1, further comprising a control device installed above the driving device and controlling operation of the driving device.

7. At least one of the first and second side surfaces is provided with a checkable opening which can be opened and closed, and the driving device is arranged at a position where maintenance and inspection can be performed from the inside of the car through the check opening. The elevator apparatus according to claim 1, wherein

8. The elevator system according to claim 1, further comprising first and second guide ropes stretched in the hoistway and guiding the first and second counterweights vertically. apparatus.

9. The main rope group includes a first main rope for suspending the first counterweight and a second main rope for suspending the second counterweight. 9. The apparatus according to claim 8, wherein the second main rope includes two types of wire ropes having different twisting directions.

10. Further provided is a stopper fixed in the hoistway, engaging with the first and second counterweights, and restricting the horizontal displacement of the first and second counterweights. The elevator apparatus according to claim 8, wherein