JP2004352462A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device capable of improving the reliability and riding comfortableness when using a car having large weight. <P>SOLUTION: This elevator device is provided with a hoisting machine 27. The hoisting machine has a sheave 4 on which a wire rope 17 for elevating and lowering the car is provided. A pair of machine beams 13, 14 are arranged substantially in parallel above the car. A pair of subbeams 7, 8 are arranged crossing the machine beams substantially orthogonally. A bearing housing 10 is held on the subbeam. A sheave shaft 2 to which the sheave is attached is rotated and supported by a pair of bearings 3a, 3b on both sides of the sheave. The bearings are held in the bearing housing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an elevator device, and more particularly to an elevator device that does not require a machine room.
[0002]
[Prior art]
An example of a conventional elevator device is described in Patent Document 1. In the elevator apparatus described in this publication, a counterweight moves up and down on the opposite side of the elevator car door, and two beams are disposed on the top of the counterweight side. Then, a thin hoist having a secondary side of the motor integrated with the sheave portion is provided on this beam. This has a structure in which the machine room is omitted. (Page 6, Figure 1)
In addition, Non-Patent Document 1 displays an elevator device having a relatively small capacity of a hoisting machine so that it can be viewed. In the screen displayed on this screen, two sub beams are passed between two machine beams to form a machine base in a grid pattern. The machine room is omitted by suspending the cylindrical hoisting machine at the top of the hoistway.
[Patent Document 1]
JP-A-9-156855 [Non-Patent Document 1]
"Evolution (R)" (Evolution (R)), [online], Thyssen Aufzugswerke, [Search February 3, 2003], Internet <URL: http: // www.tim.tu-berlin.de/_webneu/pdf/tk_evolution_161101-9bis23.pdf>
[0003]
[Problems to be solved by the invention]
By the way, in a high-speed elevator apparatus in which the speed of the car exceeds 120 m / min, the capacity of the hoisting machine reaches several tens of kW. Therefore, in the elevator device described in Patent Literature 1, it is difficult to install a thin hoist in the space formed between the hoistway wall and the car.
[0004]
Further, in the elevator apparatus disclosed in Non-Patent Document 1, if a hoist is installed at the top of the hoistway, the space occupied by the hoist becomes excessive in the case of a large-capacity hoist, and the occupancy of the elevator The area becomes large. In the elevator apparatus disclosed in Non-Patent Document 1, when an overhang load of the sheave is applied to the bearing, it is difficult to suspend a heavy car due to its strength. Further, since the sheave shaft has low support rigidity, vibration is easily generated, and the ride comfort of the elevator apparatus is deteriorated.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described disadvantages of the related art, and an object of the present invention is to improve reliability and ride comfort when using a heavy-weight car in an elevator apparatus.
[0006]
[Means for Solving the Problems]
A feature of the present invention that achieves the above object is an elevator apparatus including a hoist having a sheave on which a wire rope for elevating and lowering a car is mounted, and a pair of machines arranged substantially parallel above the car. A beam, a pair of sub-beams arranged substantially perpendicular to the machine beam, and an integrally formed bearing housing held by the sub-beams, and the sheave shaft to which the sheave is attached is rotatably supported on both sides of the sheave. A pair of bearings is held in a bearing housing.
[0007]
In this feature, it is preferable that the sub beam and the hoist can be separated, and the hoist has a warp axle on which a warp wheel on which a wire rope is mounted is mounted, and the warp axle is rotatably supported. May be held in the bearing housing.
[0008]
Another feature of the present invention that achieves the above object is that an elevator apparatus including a sheave on which a wire rope for raising and lowering a car is mounted and an electric motor that rotationally drives the sheave is disposed substantially parallel above the car. A pair of machine beams, a pair of sub-beams arranged substantially orthogonal to the machine beam, and a pair of bearings for rotatably supporting a sheave shaft to which the sheave is attached on both sides of the sheave. The bearing is held by a machine beam. And in this feature, the machine beam and the sub beam are integrated, the sheave is arranged in the space formed by the integrated machine beam and the sub beam, and the electric motor is moved outside the space formed by the machine beam and the sub beam. It is good to arrange.
[0009]
Furthermore, in any of the above features, the wire rope mounted on the sheave may be made of resin or steel coated with resin, and the speed of the car is 120 m / min or more and 240 m / min or less. Preferably it is.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, some embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of one embodiment of a hoist used in an elevator apparatus according to the present invention. The hoisting machine 27 has a drive motor 1 and a sheave shaft 2 arranged coaxially with the motor 1. A sheave 4 is attached to an intermediate portion of the sheave shaft 2. The sheave shaft 2 is rotatably supported on both sides of the sheave 4 by sheave shaft bearings 3a and 3b. A brake disk 5 is fixed to the shaft end of the sheave shaft 2. A brake device 6 is arranged near the brake disk 5 so as to be able to contact the brake disk 5. When the brake device 6 is operated, the brake device 6 comes into contact with the brake disk 5 to generate a braking force on the sheave shaft 2 and stop the rotation of the sheave shaft 2.
[0011]
The hoisting machine 27 has a first warp wheel 11 arranged in parallel with the sheave 4. Similarly to the sheave 4, the first warp wheel 11 is rotatably supported by bearings 12a and 12b in a two-sided structure. The bearings 3a, 3b, 12a, 12b supporting the sheave 4 and the deflection wheel 11 are held in an integrated bearing housing 10, which is shown in detail in FIG.
[0012]
The hoisting machine 27 is disposed between two machine beams 13 and 14 arranged in parallel above the car of the elevator apparatus. Sub beams 28 and 29 are arranged on the upper surfaces of the machine beams 13 and 14 so as to be orthogonal to the machine beams 13 and 14. The sub beams 28 and 29 support the cross beams 7a and 8a orthogonal to the machine beams 13 and 14 and the cross beams 7a and 8a on the bearing housing 10. The sub beams 28 and 29 are arranged at a plurality of positions in the length direction of the cross beams 7a and 8a. Ribs 7b and 8b.
[0013]
The arrangement of the hoisting machine 27 and the machine beam 13 is shown in FIG. FIG. 3 is a front view of the elevator device. A hoisting machine 27 is arranged at the top of a hoistway 26 on which the car 20 moves up and down. A car pulley 21 for mounting the wire rope 17 for raising and lowering the car 20 is mounted on the upper part of the car 20. A counterweight pulley 23 is mounted on the opposite end of the wire rope 17, and a counterweight 22 is attached to the counterweight pulley 23. The wire rope 17 is made of resin or steel coated with resin.
[0014]
One end of the wire rope 17 is fixed to a first rope end 24 provided on the machine beam 14. The other end of the wire rope 17 is fixed to a second rope end 25 provided apart from the first rope end 24. The wire rope 17 is mounted in the order of the first rope end 24, the car pulley 21, the sheave 4, and the first warp wheel 11.
[0015]
A second warp wheel 16 is arranged at a distance from the first warp wheel 11. The shafts to which the bearings 15 a and 15 b for rotatably supporting the second warp wheel 16 are attached are held by the machine beams 13 and 14. The wire rope 17 mounted on the first warp wheel 11 is sequentially mounted on the second warp wheel 12 and the counterweight pulley 23 above the counterweight, and reaches the second rope end 25. Since the wire rope 17 is mounted on each pulley and sheave in this manner, when the drive motor 1 rotates, the wire rope 17 is driven, and the car 20 and the counterweight 22 move upward and downward in the hoistway 26 by 120 m / min or more. And moves up and down at a speed of 240 m / min or less.
[0016]
According to the present embodiment, a highly flexible resin rope or a resin-coated rope is used for the wire rope 17 for suspending the car 20 and the counterweight 22, so that the diameter of the sheave 4 is reduced to the normal wire sheave. On the other hand, even if it is significantly reduced, the life of the wire rope 17 is not shortened. As a result, a low-torque, high-speed motor can be used as the electric motor 1, and the hoist 27 can be significantly reduced in size.
[0017]
Further, according to the present embodiment, since the plurality of bearings 3a and 3b for supporting the sheave shaft 2 are arranged with the sheave 4 interposed therebetween and the sheave shaft 2 has a double-ended structure, it is possible to support a large load with high rigidity. it can. At this time, the machine beams 13 and 14 and the sub beams 7 and 8 are deformed by the hanging load. The housing 10 of the two bearings 3a and 3b for supporting the sheave 4 is formed integrally so that the deflection of the beams 7, 8, 13 and 14 does not cause a misalignment of the bearings 3a and 3b. Since the bearing housing is formed integrally in this way, there is no need to adjust the alignment of the bearings 3a and 3b on site. In addition, since the bearing housing 10 reinforces the sub beams 7, 8, the rigidity of the hoist 27 is further improved.
[0018]
In order to reduce the space occupied by the hoisting machine 27 at the top of the hoistway 26, a gap formed between the machine beams 13 and 14 and the top of the hoistway 26 is small. Since the winding angle of the wire rope 17 around the sheave 4 needs to be a predetermined angle or more, the first warp wheel 11 is arranged in parallel with the sheave 4 so as to correspond to a small gap. That is, the wire rope 17 is once wound around the sheave 4, and the direction of the wire rope 17 is changed by the first warp wheel 11. Then, the wire rope 17 is wound around the second warp wheel 16 to secure an angle at which the wire rope 17 is wound around the sheave 4. At the same time, the installation space height of the hoisting machine 27 is suppressed.
[0019]
A force for separating the sheave 4 and the first warp wheel 11 is generated between the sheave 4 and the first warp wheel 11, but the bearing housings 10 of the bearings 3a and 3b supporting the sheave 4 and the first warp wheel 11 are integrally formed. Therefore, the separating force becomes an internal force of the bearing housing 10. Therefore, no separating force acts on the machine beams 13 and 14 and the sub beams 7 and 8.
[0020]
Since the capacity of the hoist of a high-speed elevator is large, it is customary to carry it into the machine room with a crane and install it. According to this embodiment, since the low-torque motor 1 can be used, the mass of the hoist 27 can be reduced, and the hoist 27 can be carried in via the hoistway 26. At this time, in order to reduce the useless space of the hoistway 26, the height dimension of the installation space of the hoisting machine 27 is reduced. Therefore, it is difficult to hoist the hoist 27 higher than the machine beams 13 and 14.
[0021]
In this embodiment, in order to solve this problem, the sub beams 7, 8 and the hoisting machine 27 are structured to be separable. By assembling the sub beams 7, 8 and the hoisting machine 27 separately to the top of the hoistway 26, and then assembling them at the top of the hoistway 26, the hoisting machine 27 can be assembled without being hoisted higher than the machine beams 13, 14. Can be.
[0022]
Another embodiment of the elevator apparatus according to the present invention is shown in FIG. FIG. 4 is a front view of the elevator device. This embodiment is different from the embodiment shown in FIG. 3 in that the sheave 4 is arranged near and above the counter weight 22 and two car pulleys 21 a and 21 b are arranged above the car 20. That is, the first and second warpage vehicles are omitted. The wire rope 17 is mounted on the car pulleys 21 a and 21 b, the sheave 4, and the counterweight pulley 23 in this order from the first rope end 24 and is guided to the second rope end 25.
[0023]
According to the present embodiment, although the number of pulleys on the car is increased by one, both warp wheels are unnecessary, and the manufacturing cost is reduced. Further, since the number of times of bending of the rope is reduced, the life of the rope is extended. Further, replacement of the rope is facilitated.
[0024]
FIG. 5 shows still another embodiment of the elevator apparatus according to the present invention. FIG. 5 is a front view of the elevator device. This embodiment is different from the embodiment shown in FIG. 3 in that the first and second fixing brackets 27 and 28 to which the ends of the wire rope 17 are connected without the pulley on the car and the counterweight pulley are omitted. It is provided on the upper surfaces of the car 20 and the counterweight 22. One end of the wire rope 17 is fixed to a first fixing bracket 27 on the car 20, and the sheave 4, the first warp wheel 11, and the second warp wheel 16 are mounted in this order, and a second fixing bracket on the counterweight is provided. The other end is fixed to 28.
[0025]
In the embodiment shown in FIG. 4, 2: 1 roping is used, whereas in this embodiment, 1: 1 roping is used. A load approximately twice as large as that of the embodiment shown in FIG. 4 is applied to the hoisting machine 27 and the first and second warpage wheels 11 and 16. However, since the length of the wire rope 17 is only about half and the spring constant of the wire rope 17 is increased, it is possible to cope with a longer head.
[0026]
FIG. 6 shows still another embodiment of the elevator apparatus according to the present invention. FIG. 6 is a perspective view of a hoist unit used in the elevator apparatus. This embodiment differs from the embodiment shown in FIG. 1 in that the machine beams 13 and 14 are also used as bearing housings. Since the machine beams 13 and 14 are also used as bearing housings, the sub beams 18 and 19 are welded so as to be substantially orthogonal to the machine beams 13 and 14 so that the relative positions of the machine beams 13 and 14 do not change.
[0027]
The sheave 4 of the hoist and the first deflecting wheel 11 are arranged in a space surrounded by the machine beams 13 and 14 and the sub beams 18 and 19, and the electric motor 1 and the brake disk 5 are arranged outside the space. According to this embodiment, since the machine beams 13, 14 and the sub beams 18, 19 are integrated with the hoisting machine 27, the bearing housing and the machine beam can be shared, and the manufacturing cost can be reduced. it can.
[0028]
【The invention's effect】
According to the present invention, a bearing housing for holding a sheave shaft is arranged between a machine beam and a sub-beam in an elevator apparatus, or a machine beam also serves as a bearing housing, so that a heavy car is hung with high rigidity. As a result, the reliability and ride comfort of the elevator device can be improved. Further, it is possible to realize a high-speed elevator apparatus without a machine room having a large-capacity small hoist.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of an elevator apparatus according to the present invention.
FIG. 2 is a perspective view of a bearing housing used in the elevator apparatus shown in FIG.
FIG. 3 is a front view of the elevator apparatus shown in FIG.
FIG. 4 is a front view of another embodiment of the elevator apparatus according to the present invention.
FIG. 5 is a front view of still another embodiment of the elevator apparatus according to the present invention.
FIG. 6 is a perspective view of still another embodiment of the elevator apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Drive motor, 2 ... Sheave shaft, 3a, 3b ... Sheave shaft bearing, 4 ... Sheave, 5 ... Brake disc, 6 ... Brake device, 7 ... Sub beam, 7a ... Side beam, 7b ... Rib, 8 ... Sub beam, 8a ... Side beams, 8b ribs, 10 bearing housings, 11 first warp wheels, 12a and 12b first warp axle bearings, 13 machine beams, 14 machine beams, 15a and 15b second warp axle bearings, 16 ... second warp wheel, 17 ... wire rope, 18 ... sub beam, 19 ... sub beam, 20 ... car, 21, 21a, 21b ... car pulley, 22 ... counter weight, 23 ... counter weight pulley, 24 ... first Rope end, 25 ... second rope end, 26 ... hoistway, 27 ... first rope fixing bracket, 28 ... second rope fixing bracket.

Claims (7)

In an elevator apparatus including a hoist having a sheave on which a wire rope for raising and lowering a car is mounted, a pair of machine beams arranged substantially parallel above the car, and a pair of machine beams substantially orthogonal to the machine beams. A pair of sub-beams and a bearing housing integrally held and held by the sub-beam, and a pair of bearings for rotatingly supporting a sheave shaft on which the sheave is mounted on both sides of the sheave are provided in the bearing housing. An elevator device characterized by being held. The elevator apparatus according to claim 1, wherein the sub beam and the hoist can be separated. 2. The hoist according to claim 1, further comprising a warp axle to which a warp wheel on which a wire rope is mounted is mounted, and another bearing rotatably supporting the warp axle held by the bearing housing. Or the elevator apparatus according to 2. In an elevator apparatus including a hoist having a sheave on which a wire rope for raising and lowering a car is mounted and an electric motor for rotating and driving the sheave, a pair of machine beams arranged substantially parallel above the car. A pair of sub-beams arranged substantially orthogonal to the machine beam, and a pair of bearings for rotatably supporting a sheave shaft to which the sheave is attached on both sides of the sheave. An elevator device characterized by being held. The machine beam and the sub-beam are integrated, the sheave is arranged in a space formed by the integrated machine beam and the sub-beam, and the electric motor is arranged outside the space formed by the machine beam and the sub-beam. The elevator apparatus according to claim 4, wherein: The elevator device according to any one of claims 1 to 5, wherein the wire rope mounted on the sheave is made of resin or steel covered with resin. The elevator apparatus according to any one of claims 1 to 6, wherein the speed of the car is 120 m / min or more and 240 m / min or less.

Images