WO2002030801A1

WO2002030801A1 - Elevator device

Info

Publication number: WO2002030801A1
Application number: PCT/JP2000/007026
Authority: WO
Inventors: Shuki Hamaguchi
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2000-10-10
Filing date: 2000-10-10
Publication date: 2002-04-18
Also published as: JP4786121B2; CN1409687A; CN1226176C; DE60043517D1; EP1329412B1; EP1329412A1; EP1329412A4; JPWO2002030801A1

Abstract

An elevator device, wherein an upper car (4) and a lower car (5) move up and down inside a common hoistway (1), an upper car drive device (8) and a lower car drive device (9) are disposed horizontally at the inside upper part of the hoistway (1) so that the rotating axes of the drive sheaves (8a, 9a) thereof can be extended vertically, and the upper car (4), the lower car (5), and a counterbalance weight (6) are suspended through a main rope body (11) wound up on the drive sheaves (8a, 9a) inside the hoistway.

Description

Meiseyo Elevator Overnight Equipment

Technical field

The present invention relates to an elevator apparatus in which a plurality of cars are raised and lowered in a common hoistway. Background art

Conventionally, for example, Japanese Utility Model Laid-Open Publication No. 1-132660 discloses an elevator in which one balancing weight is used for two cars and two cars are raised and lowered in different hoistways. Overnight equipment is shown. However, this elevator system requires a large hoistway space for arranging two cars and one counterweight in a plane.

In addition, for example, Japanese Patent Publication No. 59-1573773 discloses an elevator system in which two cars are arranged vertically in a common hoistway. However, the configuration of the elevator car is complicated because the upper car is suspended by 1: 1 roving and the lower car is suspended by 2: 1 roving, and two counterweights are required. Furthermore, since the rope penetrated the counterweight, it was troublesome to place the rope, and the rope could swing and interfere with the counterweight. Furthermore, since the weight of the counterweight is reduced by providing the through holes in the rope, the outer dimensions of the counterweight are increased to compensate for the weight. Disclosure of the invention

The present invention has been made to solve the above-mentioned problems, and an elevator capable of efficiently arranging two cars in one hoistway and making the whole compact. The purpose is to obtain the evening equipment.

The elevator apparatus according to the present invention includes a hoistway, an upper car that is raised and lowered in the hoistway, a lower car that is arranged below the upper car and that is independently raised and lowered in the hoistway with respect to the upper car, A counterweight that is raised and lowered in the hoistway, has a drive sheave for the upper car, and A lower car drive device which is arranged at the upper part of the downcomer and has an upper car driving device for raising and lowering the upper car and a lower car driving sheave, and which is arranged at the upper portion of the hoistway and which raises and lowers the lower car. And a main rope body which is wound around the drive cage for the upper car and the drive sheave for the lower car, and suspends the upper cage, the lower cage and the counterweight. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a side view showing 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 an enlarged side view showing the main part of Fig. 1,

FIG. 4 is a plan view showing a main part of FIG. 3,

Figure 5 is an enlarged side view of the upper part of the hoistway of Figure 1,

FIG. 6 is a perspective view showing the structure of the main rope of FIG. 1,

FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 2 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 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 and a pair of counterweight guide rails 3 are installed in a hoistway 1. The upper car 4 and the lower car 5 are independently raised and lowered in the hoistway 1 by being guided by the car guide rail 2. The counterweight 6 is guided by the counterweight guide rail 3 and is moved up and down in the hoistway 1.

At the upper part in the hoistway 1, a support 7 is arranged. The support 7 is supported by the car guide rail 2 and the counterweight guide rail 3. The support 7 supports an upper car drive 8 for raising and lowering the upper car 4 and a lower car drive 9 for raising and lowering the lower car 5. The upper car driving device 8 has an upper car driving sieve 8a. The lower car drive 9 is a lower car drive system. Have a 9a.

The counterweight 6 is located behind the upper car 4 and the lower car 5, and is positioned with respect to a straight line connecting the rotation centers of the upper car drive sheave 8a and the lower car drive sheave 9a. The center lines of the pair of counterweight guide rails 3 are parallel.

A set of main rope bodies 11 composed of a plurality of main ropes 10 made of synthetic fiber rope are wound around the drive cage 8a and the drive cage 9a for the lower cage. The upper car 4, the lower car 5, and the counterweight 6 are suspended in the hoistway 1. by the main rope body 11. The upper car drive sheave 8a and the lower car drive sheave 9a are arranged so that their heights are shifted from each other in order to avoid interference between the main rope bodies 1,1.

The support 7 has upper car deflectors 12, first and second counterweight deflectors 13, 14, first and second lower car deflectors 15, 16 and horizontal A deflector 17 is supported.

The upper car deflector .1 2 guides the main opening 11 from the upper car drive sheave 8a to the upper car 4. The first balancing weight deflector 13 guides the main rope body 11 to the balancing weight 6 from the upper car drive sheave 8a. The second counterweight diverter 14 guides the main rope body 11 to the counterweight 6 from the lower car drive sheave 9a.

The main rope body 11 is distributed in two directions so as to pass on both sides of the upper car 4 on the way from the lower car driving device 9 a to the lower car 5. One of the sorted main ports 11 is guided to the lower car 5 by the first lower car deflector 15. The other of the divided main rope bodies 11 is guided to the lower car 5 by the second lower car deflector 16 and the horizontal deflector 17.

Above the counterweight 6, a counterweight suspension wheel 18 around which the main rope body 11 is wound is provided.

One end of the main rope body 11 is connected to the upper center of the upper car 4. The main rope body 11 includes an upper car deflector 12 from one end, a drive sheep 8a for the upper car, a first counterweight deflector 13 and a counterweight suspender 18 and a second It is wrapped around the counterweight deflector car 14 and the lower car drive sheave 9a in this order and distributed in two directions. The other end of the divided main rope body 1 1 is attached to the lower part on both sides of the lower cage 5. It is connected.

As described above, the upper car 4 and the lower car 5 are suspended in a one-by-one-bing manner with respect to the upper car driving sheave 8a and the lower car driving sheave 9a, and the counterweight 6 is 2: It is suspended by one roving method.

The upper part of the lower car 5 is equipped with an interference detection switch 19 for detecting interference with the upper car 4 and an inter-cage shock absorber 20 for buffering an impact in the event that the upper car 4 collides. I have. The pit (bottom) la of the hoistway 1 is provided with a plurality of shock absorbers 21 for buffering an impact in the event that the lower car 5 collides with the pit 1a.

The pit la has a waiting space lb where the lower car 5 waits. A pair of left and right balancing ropes 22 are suspended below the upper car 4, the lower car 5, and the counterweight 6.

FIG. 3 is an enlarged side view showing a main part of FIG. 1, and FIG. 4 is a plan view showing a main part of FIG. A pair of return wheels 23 around which the balancing rope 22 is wound are provided below the counterweight 6. Pit 1a includes a pair of first upper cage pulleys 24, a pair of second upper cage pulleys 25, a pair of first lower cage pulleys 26, and a pair of second The lower car tensioner 27 is located.

The balancing rope 22 has one end connected to the lower part of the upper car 4 and the other end connected to the lower part of the lower car 5. The middle part of the balancing rope 22 is the first upper car tensioner 24, the second upper car tensioner 25, the return wheel 23, and the first lower car tensioner 26. And a second lower car tensioner 27.

In the hoistway 1, a fixed-side cable hanger 28 is fixed. The fixed-side cable hanger 28 is fixed to the car guide rail 2. The upper car 4 and the lower car 5 are provided with upper and lower car side cable suspenders 29, 30 respectively. A flexible upper car control cable 31 is connected between the fixed-side cable hanger 28 and the upper car-side cable hanger 29. In addition, a flexible lower car control cable 32 is connected between the fixed-side cable hanger 28 and the lower car-side cable hanger 30.

Next, FIG. 5 is an enlarged side view showing the upper part in the hoistway of FIG. The driving device 8 for the upper car is fixed to the support base 7 by the support bracket 33. Support bra A plurality of elastic members 34 are interposed between the bracket 33 and the upper car driving device 8. The support structure of the lower car driving device 9 is the same as that of the upper car driving device 8.

FIG. 6 is a perspective view showing the structure of the main rope 10 of FIG. In the figure, an inner strand layer 44 having a plurality of inner strands 42 and a filling strand 43 disposed in a gap between the inner strands 42 is arranged around a core wire 41. ing. Each internal strand 42 is composed of a plurality of aramide fibers and an impregnating material such as polyurethane. The filling strand 43 is made of, for example, polyamide.

An outer strand layer 46 having a plurality of outer strands 45 is arranged on the outer periphery of the inner strand layer 44. Each outer strand 45, like the inner strand 42, is composed of a plurality of aramide fibers and an impregnating material such as polyurethane.

Between the inner strand layer 4 4 and the outer strand layer 46, avoid abrasion of the strands 4 2, 4 5 due to friction between the strands 4 2, 4 5 when wound around the drive sheave 8 a, 9 a A friction-reducing coating layer 47 is provided. Further, a protective coating layer 48 is disposed on the outer periphery of the outer strand layer 46. Such a synthetic fiber rope has a higher coefficient of friction and is more flexible than a steel rope. In such an elevator system, the upper hoistway 4 and the lower cage 4 are arranged in the common hoistway 1. Since the car 5 is raised and lowered independently, the transport capacity can be increased without increasing the area of the hoistway 1, and the two cars 4 and 5 can be efficiently arranged. In addition, since the upper car driving device 8 and the lower car driving device 9 are arranged at the upper part in the hoistway 1, the entire structure can be made compact.

Furthermore, for the upper car drive sheave 8a and the lower car drive sheave 9a, the upper car 4 and the lower car 5 are each suspended in a 1: 1 roving manner, and the counterweight 6 is 2: Since it is suspended in a one-bout one-bing system, only one counterweight 6 is required, and the configuration can be simplified.

Furthermore, the upper car driving device 8 and the lower car driving device 9 are arranged horizontally, and the upper car driving sheave 8a and the lower car driving Since a plurality of deflecting wheels 12 to 17 for guiding the main rope body 11 are arranged from the step 9 a to the upper car 4, the lower car 5 and the counterweight 6, make the whole compact. Can be.

In addition, the drive unit 8 for the upper car, the drive unit 9 for the lower car, and all the deflecting wheels 12 to 17 are supported by the common support base 7, so the number of parts is reduced and the whole is compact. can do.

Further, since the support 7 is supported by the guide rails 2 and 3, the load applied to the support 7 can be received by the port 1a via the guide rails 2 and 3. However, the support 7 may be directly supported by the building. In this case, the load applied to the guide rails 2 and 3 is reduced, and the cross-sectional area of the guide rails 2 and 3 can be reduced.

Furthermore, since a plurality of elastic bodies 34 are interposed between the upper car driving device 8 and the lower car driving device 9 and the support 7, the vibrations of the driving devices 8 and 9 are transmitted to the building side. Is prevented.

Also, the plurality of main ropes 10 are distributed so as to pass on both sides of the upper car 3 on the way from the lower car driving device 9 to the lower car 5. Can be hung.

In addition, the pit 1a of the hoistway 1 has a waiting space 1b where the lower car 5 stands by, so that the upper car 4 can be stopped at the lowest landing. When the usage of the car is low, the lower car 5 may be made to stand by in the waiting space 1b and only the upper car 4 may be operated, so that the operation efficiency can be improved. Furthermore, since the control cables 31 and 32 are arranged outside the movement area of the upper car 4, the lower car 5 and the counterweight 6, the control cables 31 and 32 are connected to the upper car 4 and the lower car 4. It does not interfere with 5 and the counterweight 6.

In addition, since the main rope 10 made of a synthetic fiber rope having a high coefficient of friction and excellent flexibility is used, the diameter of the driving chips 8a and 9a and the deflecting wheels 12 and L7 are reduced. Therefore, the whole can be configured more compactly.

In the first embodiment, the upper car 4 is suspended at the center of the upper part. However, similarly to the lower car 5, a plurality of main ropes 10 may be distributed and suspended at both sides. In the first embodiment, one balancing weight 6 is used for two cars 4 and 5. However, two counterweights may be used.

Embodiment 2

Further, in the first embodiment, the counterweight 6 is disposed behind the cars 4 and 5, but, for example, as shown in FIG. 7, the counterweight 6 is disposed on the side of the cars 4 and 5. The present invention is also applicable to an elevator device. In this case, the center line of the pair of counterweight guide rails 3 is perpendicular to the straight line connecting the rotation centers of the upper car drive sheave 8a and the lower car drive sheave 9a.

Claims

The scope of the claims

1. The hoistway,

An upper car that is raised and lowered in the hoistway,

A lower car which is arranged below the upper car and which is independently raised and lowered in the hoistway with respect to the upper car;

A counterweight that is raised and lowered in the hoistway,

An upper car driving device having an upper car driving ship, and being disposed at an upper part in the hoistway, for raising and lowering the upper car;

A lower-car driving device having a lower-car driving sheep, and disposed at an upper portion in the hoistway, for raising and lowering the lower car; and

A main rope body which is wound around the upper car driving sheave and the lower car driving sheave and suspends the upper car, the lower car and the counterweight.

Elevator device equipped with.

2. The upper car and the lower car are suspended by a 1: 1 roving method with respect to the upper car drive sheave and the lower car drive sheave, respectively, and the counterweight is 2: 1 mouth per bing. 2. The elevator according to claim 1, wherein the elevator is suspended by a method.

3. The upper car drive and the lower car drive are arranged horizontally such that the drive shafts of the respective drive sheaves extend along the vertical direction, and at the upper part in the hoistway, A plurality of deflecting wheels for guiding the main rope body from the drive sheave for the upper car and the drive sheave for the lower car to the upper car, the lower car, and the counterweight are arranged. Item 1. The elevator device according to Item 1.

4. The elevator according to claim 3, wherein the upper car drive device, the lower car drive device, and all of the deflecting wheels are supported by a common support arranged at an upper portion in the hoistway. Overnight equipment.

5. In the hoistway, the upper car, the lower car, and a plurality of guide rails for guiding the lifting of the counterweight are installed, and the support base is supported by the guide rails. 5. The elevator device according to claim 4.

6. The elevator apparatus according to claim 4, wherein the support is supported by a building.

7. The elevator apparatus according to claim 4, wherein a plurality of elastic bodies are interposed between the upper car driving device and the lower car driving device and the support base.

8. The main rope body has a plurality of main ropes, and the plurality of main ropes pass through both sides of the upper car on the way from the lower car driving device to the lower car. 2. The elevator device according to claim 1, wherein the device is distributed to:

9. A pair of counterweight guide rails for guiding the lifting and lowering of the counterweight are installed in the hoistway, and the center of rotation of the drive sheave for the upper car and the drive sheave for the lower car is provided. 2. The elevator apparatus according to claim 1, wherein a center line of the pair of counterweight guide rails is parallel to a straight line to be connected.

10. In the hoistway, a pair of counterweight guide rails for guiding the lifting and lowering of the counterweight are installed, and the drive cage for the upper car and the drive shaft for the lower car are provided. The elevator apparatus according to claim 1, wherein a center line of the pair of counterweight guide rails is perpendicular to a straight line connecting the rotation centers of the pair.

11. The elevator apparatus according to claim 1, wherein a waiting space in which the lower car waits is secured in the hoistway pit.

12. The elevator apparatus according to claim 1, wherein the main rope body has a main rope made of a synthetic fiber rope.