EP1801061B1 - Elevator apparatus - Google Patents
Elevator apparatus Download PDFInfo
- Publication number
- EP1801061B1 EP1801061B1 EP04822312.7A EP04822312A EP1801061B1 EP 1801061 B1 EP1801061 B1 EP 1801061B1 EP 04822312 A EP04822312 A EP 04822312A EP 1801061 B1 EP1801061 B1 EP 1801061B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- car
- main rope
- counterweight
- drive sheave
- hoistway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0035—Arrangement of driving gear, e.g. location or support
- B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
Definitions
- the present invention relates to a traction elevator apparatus in which a car and a counterweight are suspended by a main rope group that is wound around a drive sheave of a driving machine.
- a hoisting machine having a thin motor as a driving source is disposed in an upper portion inside a hoistway.
- the hoisting machine is disposed such that a rotating shaft of a drive sheave is vertical.
- the hoisting machine is disposed in a corner portion of the upper portion of the hoistway (see Patent Literature 1, for example).
- Patent Document 1 JP 2001-48450 A
- ES 2 161 183 A1 refers to an elevator apparatus, wherein the ropes are wound 360 ° on a drive pulley.
- WO 03/74409 A1 refers to an elevator apparatus comprising a car having a first and second hoisting cable connecting parts.
- the present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling a driving machine to be reduced further in thickness without requiring space in a hoistway or machine room to be expanded even if a diameter of a motor of the driving machine is increased.
- an elevator apparatus including the features of claim 1 or claim 2. Further preferred embodiments are mentioned in the dependent claims.
- Figure 1 is a front elevation showing an elevator apparatus according to Embodiment 1 of the present invention
- Figure 2 is a cross section taken along line II - II in Figure 1 .
- a hoisting zone is shown considerably shortened for simplification, but the actual hoisting zone is much longer than a height dimension of a car.
- a car 2, a first counterweight 3, and a second counterweight 4 are disposed inside a hoistway 1.
- the car 2, the first counterweight 3, and the second counterweight 4 are raised and lowered inside the hoistway 1.
- a car guide rail (not shown), a first counterweight guide rail (not shown), and a second counterweight guide rail (not shown) that guide the raising and lowering of the car 2, the first counterweight 3, and the second counterweight 4, respectively, are also installed inside the hoistway 1.
- the car 2 has: a front surface 2a in which a car entrance is disposed; a back surface 2b opposite the front surface 2a; a first side surface 2c; and a second side surface 2d opposite the first side surface 2c.
- the first counterweight 3 is disposed so as to face the first side surface 2c when positioned level with the car 2.
- the second counterweight 4 is disposed so as to face the second side surface 2d when positioned level with the car 2.
- the first counterweight 3 is disposed in a position that is closer to the back surface 2b than the front surface 2a when viewed from above.
- the second counterweight 4 is disposed in a position that is closer to the front surface 2a than the back surface 2b when viewed from above.
- the first and second counterweights 3 and 4 are disposed so as to be offset in a depth direction of the car 2 when viewed from above.
- a machine room 5 is disposed in an upper portion of the hoistway 1.
- a driving machine (a hoisting machine) 6 that generates a driving force for raising and lowering the car 2 and the counterweights 3 and 4 is installed inside the machine room 5.
- the driving machine 6 has: a driving machine main body 7 that includes a motor and a brake; and a drive sheave 8 that is rotated by the driving machine main body 7.
- a thin hoisting machine having a shorter axial dimension than an outside diameter dimension that is perpendicular to an axial direction is used for the driving machine 6.
- a permanent-magnet synchronous motor is used for the motor of the driving machine 6.
- the drive sheave 8 is rotated directly by the motor without a reduction gear.
- the driving machine 6 is disposed such that a rotating shaft of the drive sheave 8 is vertical (also including generally vertical).
- the driving machine 6 is also disposed such that the drive sheave 8 is positioned below the driving machine main body 7.
- the driving machine 6 is disposed so as to overlap generally centrally with the car 2 when viewed from above. In other words, the driving machine 6 is disposed generally centrally inside the machine room 5.
- a main rope group 10 that suspends the car 2 and the counterweights 3 and 4 is wound around the drive sheave 8.
- a plurality of first main ropes 11 (only one is shown in the figures) that suspend the car 2 and the first counterweight 3, and a plurality of second main ropes 12 (only one is shown in the figures) that suspend the car 2 and the second counterweight 4 are included in the main rope group 10.
- the number of first main ropes 11 is equal to the number of second main ropes 12.
- the total number of main ropes contained in the main rope group 10 is determined by constraints such as main rope safety factors prescribed by law, etc.
- the number of first and second main ropes 11 and 12 is half the total number of main ropes, respectively.
- a wind-around range R1 of the first main ropes 11 and a wind-around range R2 of the second main ropes 12 on the drive sheave 8 are centrosymmetric to each other relative to the rotating shaft of the drive sheave 8.
- the wind-around range R1 and the wind-around range R2 do not overlap in a circumferential direction of the drive sheave 8.
- small regions are present at two circumferential positions on the drive sheave 8 where neither the first nor second main ropes 11 and 12 are wound around. Consequently, wind-around angles of the first and second main ropes 11 and 12 on the drive sheave 8 are less than 180 degrees, respectively.
- a deflection pulley group 14 that directs the main rope group 10 from the drive sheave 8 toward the car 2 and the counterweight 3 and 4 is disposed in the machine room 5.
- a second car deflection pulley 17 that directs the second main ropes 12 from the drive sheave 8 toward the car 2
- a second counterweight deflection pulley 18 that directs the second main ropes 12 from the drive sheave 8 toward the second counterweight 4 are included in the deflection pulley group 14.
- the deflection pulleys 15 through 18 are disposed such that rotating shafts thereof are horizontal.
- the deflection pulleys 15 through 18 are also disposed so as to overlap with the car 2 when viewed from above.
- First and second hanging positions 13a and 13b of the car 2 by the first and second main ropes 11 and 12 are separated from each other in a width direction and a depth direction of the car 2 when viewed from above.
- the hanging positions 13a and 13b are also centrosymmetric to each other relative to a center of gravity of the car 2 when viewed from above.
- the first hanging position 13a is an action centre of forces from all of the first main ropes 11.
- the second hanging position 13b is similar.
- an approach angle of the main ropes 11 and 12 onto the drive sheave 8 is maximized in the main rope positioned furthest outside on the deflection pulleys 15 through 18.
- the main rope group 10 is divided into first and second main ropes 11 and 12 in this example, the number of main ropes that are wound around each of the deflection pulleys 15 through 18 is halved (or approximately halved). Consequently, the approach angle onto the drive sheave 8 of the main rope positioned furthest outside on the deflection pulleys 15 through 18 can be reduced. In other words, the distance between the drive sheave 8 and the deflection pulleys 15 through 18 can be reduced.
- the driving machine 6 can be disposed in the vicinity of the center of the machine room 5, and interference with wall portions of the machine room 5 is avoided even if the diameter of the motor of the driving machine 6 is increased, making it unnecessary to expand the space of the machine room 5. In other words, additional reductions in the thickness of the driving machine 6 can be achieved.
- Figure 3 is a front elevation showing an elevator apparatus according to Embodiment 2 of the present invention and Figure 4 is a plan showing the elevator apparatus in Figure 3 .
- a driving machine 6 and a deflection pulley group 14 are disposed in an upper portion inside a hoistway 1.
- the driving machine 6 and deflection pulleys 15 through 18 are disposed between a car 2 and a ceiling 1a of the hoistway 1 when the car 2 is stopped at an uppermost floor, in other words, the elevator apparatus in this example is a machine-roomless elevator.
- the driving machine 6 is disposed such that a drive sheave 8 is positioned above a driving machine main body 7.
- the driving machine 6 is also disposed at a height equal to that of the deflection pulleys 15 through 18.
- the driving machine 6 is disposed in a vicinity of a center of the hoistway 1 when viewed from above.
- First and second rope connecting portions 2e and 2f projecting outward in a width direction of the car 2 from first and second side surfaces 2c and 2d are disposed on the car 2.
- First and second main ropes 11 and 12 are connected to the first and second rope connecting portions 2e and 2f.
- the rest of the configuration is similar to that of Embodiment 1.
- the driving machine 6 can be disposed in the vicinity of the center of the upper portion inside the hoistway 1. Consequently, it is not necessary to expand the space of the hoistway 1 even if the diameter of the motor of the driving machine 6 is increased.
- the driving machine 6 can also be reduced further in thickness. Thus, increases in vertical dimensions and horizontal dimensions of the hoistway 1 can be prevented.
- the driving machine main body 7 is disposed under the drive sheave 8
- maintenance inspection work on the driving machine main body 7 can be performed easily from on top of the car 2.
- the rope connecting portions 2e and 2f are disposed on the car 2
- the distance between the deflection pulleys 15 and 17 and the drive sheave 8 can be increased, enabling the approach angle of the main ropes 11 and 12 onto the drive sheave 8 to be reduced.
- Figure 5 is a plan showing an elevator apparatus according to Embodiment 3 not part of the present invention.
- a second counterweight 4 is disposed in a position that is closer to a back surface 2b than a front surface 2a when viewed from above.
- the first and second counterweights 3 and 4 are disposed at identical positions in a depth direction of the car 2 when viewed from above.
- a wind-around range R1 of first main ropes 11 and a wind-around range R2 of second main ropes 12 on a drive sheave 8 are not centrosymmetric to each other relative to a rotating shaft of the drive sheave 8.
- the wind-around range R1 and the wind-around range R2 overlap with each other only partially in a circumferential direction on the drive sheave 8 (overlap range R3) .
- the overlap range R3 is less than one quarter (1/4) of the wind-around range R1 or the wind-around range R2.
- the rest of the configuration is similar to that of Embodiments 1 or 2.
- FIG. 6 is a plan showing an elevator apparatus according to Embodiment 4 not part of the present invention.
- a car 2 and a counterweight 21 are suspended by a main rope group 10 inside a hoistway 1.
- a back surface facing portion 21a that faces a back surface 2b when positioned level with the car 2 and a side surface facing portion 21b that faces a second side surface 2d when positioned level with the car 2 are disposed integrally on the counterweight 21.
- the side surface facing portion 21b is at a right angle relative to the back surface facing portion 21a.
- a horizontal shape of the counterweight 21 is an L shape.
- Hanging positions 22a and 22b of the counterweight 21 by first and second main ropes 11 and 12 are separated from each other when viewed from above. Specifically, the hanging position 22a of the counterweight 21 by the first main ropes 11 is disposed on the back surface facing portion 21a, and the hanging position of the counterweight 21 by the second main ropes 12 is disposed on the side surface facing portion 21b.
- the overlap range R3 is less than one half (1/2) of the wind-around range R1 or the wind-around range R2.
- the rest of the configuration is similar to that of Embodiments 1 or 2.
- wind-around range R1 and the wind-around range R2 overlap with each other only partially in the circumferential direction of the drive sheave 8, forces from the main ropes 11 and 12 acting radially on the drive sheave 8 partially cancel each other out.
- strength in the rotating shaft, the bearings, and the frame body supporting the bearings, etc., of the drive sheave 8 can be reduced, enabling reductions in overall size and weight of the driving machine 6.
- car suspension sheaves may also be mounted to a car, a counterweight suspension sheave mounted to a counterweight, main ropes wound around the car suspension sheaves and the counterweight suspension sheave, and end portions of the main ropes connected to rope end connecting portions that are disposed in an upper portion of a hoistway.
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Description
- The present invention relates to a traction elevator apparatus in which a car and a counterweight are suspended by a main rope group that is wound around a drive sheave of a driving machine. BACKGROUND ART
- In conventional elevator apparatuses, a hoisting machine having a thin motor as a driving source is disposed in an upper portion inside a hoistway. The hoisting machine is disposed such that a rotating shaft of a drive sheave is vertical. In addition, in order to prevent increases in approach angle of a main rope onto the drive sheave, the hoisting machine is disposed in a corner portion of the upper portion of the hoistway (see
Patent Literature 1, for example). - Patent Document 1:
JP 2001-48450 A
As a further prior art document,ES 2 161 183 A1 WO 03/74409 A1 - In order to reduce the number of permanent magnets used in the hoisting machine in conventional elevator apparatuses such as that described above, it is necessary to increase a diameter of the motor since it is necessary to generate required torque with fewer magnets. On the other hand, because the hoisting machine is disposed in the corner portion of the upper portion of the hoistway, the hoisting machine interferes with the hoistway wall if the diameter of the motor is increased.
- The present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling a driving machine to be reduced further in thickness without requiring space in a hoistway or machine room to be expanded even if a diameter of a motor of the driving machine is increased.
- In order to achieve the above object, according to one aspect of the present invention, there is provided an elevator apparatus including the features of
claim 1 orclaim 2. Further preferred embodiments are mentioned in the dependent claims. -
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Figure 1 is a front elevation showing an elevator apparatus according toEmbodiment 1 of the present invention; -
Figure 2 is a cross section taken along line II - II inFigure 1 ; -
Figure 3 is a front elevation showing an elevator apparatus according toEmbodiment 2 of the present invention; -
Figure 4 is a plan showing the elevator apparatus inFigure 3 ; -
Figure 5 is a plan showing an elevator apparatus according to Embodiment 3 (not part of this invention); and -
Figure 6 is a plan showing an elevator apparatus according to Embodiment 4 (not part of this invention). - Preferred embodiments of the present invention will now be explained with reference to the drawings.
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Figure 1 is a front elevation showing an elevator apparatus according toEmbodiment 1 of the present invention, andFigure 2 is a cross section taken along line II - II inFigure 1 . - Moreover, in
Figure 1 , a hoisting zone is shown considerably shortened for simplification, but the actual hoisting zone is much longer than a height dimension of a car. - In the figures, a
car 2, afirst counterweight 3, and asecond counterweight 4 are disposed inside ahoistway 1. Thecar 2, thefirst counterweight 3, and thesecond counterweight 4 are raised and lowered inside thehoistway 1. A car guide rail (not shown), a first counterweight guide rail (not shown), and a second counterweight guide rail (not shown) that guide the raising and lowering of thecar 2, thefirst counterweight 3, and thesecond counterweight 4, respectively, are also installed inside thehoistway 1. - The
car 2 has: afront surface 2a in which a car entrance is disposed; aback surface 2b opposite thefront surface 2a; afirst side surface 2c; and asecond side surface 2d opposite thefirst side surface 2c. Thefirst counterweight 3 is disposed so as to face thefirst side surface 2c when positioned level with thecar 2. Thesecond counterweight 4 is disposed so as to face thesecond side surface 2d when positioned level with thecar 2. - The
first counterweight 3 is disposed in a position that is closer to theback surface 2b than thefront surface 2a when viewed from above. In addition, thesecond counterweight 4 is disposed in a position that is closer to thefront surface 2a than theback surface 2b when viewed from above. In other words, the first andsecond counterweights car 2 when viewed from above. - A
machine room 5 is disposed in an upper portion of thehoistway 1. A driving machine (a hoisting machine) 6 that generates a driving force for raising and lowering thecar 2 and thecounterweights machine room 5. Thedriving machine 6 has: a driving machinemain body 7 that includes a motor and a brake; and adrive sheave 8 that is rotated by the driving machinemain body 7. - A thin hoisting machine having a shorter axial dimension than an outside diameter dimension that is perpendicular to an axial direction is used for the
driving machine 6. A permanent-magnet synchronous motor is used for the motor of thedriving machine 6. In addition, thedrive sheave 8 is rotated directly by the motor without a reduction gear. - The
driving machine 6 is disposed such that a rotating shaft of thedrive sheave 8 is vertical (also including generally vertical). Thedriving machine 6 is also disposed such that thedrive sheave 8 is positioned below the driving machinemain body 7. In addition, thedriving machine 6 is disposed so as to overlap generally centrally with thecar 2 when viewed from above. In other words, thedriving machine 6 is disposed generally centrally inside themachine room 5. - A
main rope group 10 that suspends thecar 2 and thecounterweights drive sheave 8. A plurality of first main ropes 11 (only one is shown in the figures) that suspend thecar 2 and thefirst counterweight 3, and a plurality of second main ropes 12 (only one is shown in the figures) that suspend thecar 2 and thesecond counterweight 4 are included in themain rope group 10. - The number of first main ropes 11 is equal to the number of second
main ropes 12. The total number of main ropes contained in themain rope group 10 is determined by constraints such as main rope safety factors prescribed by law, etc. The number of first and secondmain ropes 11 and 12 is half the total number of main ropes, respectively. - A wind-around range R1 of the first main ropes 11 and a wind-around range R2 of the second
main ropes 12 on thedrive sheave 8 are centrosymmetric to each other relative to the rotating shaft of thedrive sheave 8. The wind-around range R1 and the wind-around range R2 do not overlap in a circumferential direction of thedrive sheave 8. Specifically, in this example, small regions are present at two circumferential positions on thedrive sheave 8 where neither the first nor secondmain ropes 11 and 12 are wound around. Consequently, wind-around angles of the first and secondmain ropes 11 and 12 on thedrive sheave 8 are less than 180 degrees, respectively. - A
deflection pulley group 14 that directs themain rope group 10 from thedrive sheave 8 toward thecar 2 and thecounterweight machine room 5. A firstcar deflection pulley 15 that directs the first main ropes 11 from thedrive sheave 8 toward thecar 2, a firstcounterweight deflection pulley 16 that directs the first main ropes 11 from thedrive sheave 8 toward thefirst counterweight 3, a secondcar deflection pulley 17 that directs the secondmain ropes 12 from thedrive sheave 8 toward thecar 2, and a secondcounterweight deflection pulley 18 that directs the secondmain ropes 12 from thedrive sheave 8 toward thesecond counterweight 4 are included in thedeflection pulley group 14. - The
deflection pulleys 15 through 18 are disposed such that rotating shafts thereof are horizontal. Thedeflection pulleys 15 through 18 are also disposed so as to overlap with thecar 2 when viewed from above. - First and second hanging
positions car 2 by the first and secondmain ropes 11 and 12 are separated from each other in a width direction and a depth direction of thecar 2 when viewed from above. The hangingpositions car 2 when viewed from above. Here, if a plurality of first main ropes 11 are used, thefirst hanging position 13a is an action centre of forces from all of the first main ropes 11. The second hangingposition 13b is similar. - In an elevator apparatus of this kind, an approach angle of the
main ropes 11 and 12 onto thedrive sheave 8 is maximized in the main rope positioned furthest outside on thedeflection pulleys 15 through 18. In regard to this, because themain rope group 10 is divided into first and secondmain ropes 11 and 12 in this example, the number of main ropes that are wound around each of the deflection pulleys 15 through 18 is halved (or approximately halved). Consequently, the approach angle onto thedrive sheave 8 of the main rope positioned furthest outside on the deflection pulleys 15 through 18 can be reduced. In other words, the distance between thedrive sheave 8 and the deflection pulleys 15 through 18 can be reduced. - Thus, the driving
machine 6 can be disposed in the vicinity of the center of themachine room 5, and interference with wall portions of themachine room 5 is avoided even if the diameter of the motor of the drivingmachine 6 is increased, making it unnecessary to expand the space of themachine room 5. In other words, additional reductions in the thickness of the drivingmachine 6 can be achieved. - Since the wind-around range R1 of the first main ropes 11 and the wind-around range R2 of the second
main ropes 12 on thedrive sheave 8 are centrosymmetric to each other relative to the rotating shaft of thedrive sheave 8, forces from themain ropes 11 and 12 acting radially on thedrive sheave 8 cancel each other out. Thus, strength in the rotating shaft, bearings, and a frame body supporting the bearings, etc., of thedrive sheave 8 can be reduced, enabling reductions in overall size and weight of the drivingmachine 6. - Next,
Figure 3 is a front elevation showing an elevator apparatus according toEmbodiment 2 of the present invention andFigure 4 is a plan showing the elevator apparatus inFigure 3 . In this example, a drivingmachine 6 and adeflection pulley group 14 are disposed in an upper portion inside ahoistway 1. Specifically, the drivingmachine 6 and deflection pulleys 15 through 18 are disposed between acar 2 and a ceiling 1a of thehoistway 1 when thecar 2 is stopped at an uppermost floor, in other words, the elevator apparatus in this example is a machine-roomless elevator. - The driving
machine 6 is disposed such that adrive sheave 8 is positioned above a driving machinemain body 7. The drivingmachine 6 is also disposed at a height equal to that of the deflection pulleys 15 through 18. In addition, the drivingmachine 6 is disposed in a vicinity of a center of thehoistway 1 when viewed from above. - First and second
rope connecting portions car 2 from first and second side surfaces 2c and 2d are disposed on thecar 2. First and secondmain ropes 11 and 12 are connected to the first and secondrope connecting portions Embodiment 1. - In an elevator apparatus of this kind, the driving
machine 6 can be disposed in the vicinity of the center of the upper portion inside thehoistway 1. Consequently, it is not necessary to expand the space of thehoistway 1 even if the diameter of the motor of the drivingmachine 6 is increased. The drivingmachine 6 can also be reduced further in thickness. Thus, increases in vertical dimensions and horizontal dimensions of thehoistway 1 can be prevented. - Because the driving machine
main body 7 is disposed under thedrive sheave 8, maintenance inspection work on the driving machinemain body 7 can be performed easily from on top of thecar 2. In addition, because therope connecting portions car 2, the distance between the deflection pulleys 15 and 17 and thedrive sheave 8 can be increased, enabling the approach angle of themain ropes 11 and 12 onto thedrive sheave 8 to be reduced. - Next,
Figure 5 is a plan showing an elevator apparatus according toEmbodiment 3 not part of the present invention. In this example, asecond counterweight 4 is disposed in a position that is closer to aback surface 2b than afront surface 2a when viewed from above. Specifically, the first andsecond counterweights car 2 when viewed from above. - Thus, a wind-around range R1 of first main ropes 11 and a wind-around range R2 of second
main ropes 12 on adrive sheave 8 are not centrosymmetric to each other relative to a rotating shaft of thedrive sheave 8. However, the wind-around range R1 and the wind-around range R2 overlap with each other only partially in a circumferential direction on the drive sheave 8 (overlap range R3) . The overlap range R3 is less than one quarter (1/4) of the wind-around range R1 or the wind-around range R2. The rest of the configuration is similar to that ofEmbodiments - In an elevator apparatus of this kind, because the wind-around range R1 and the wind-around range R2 do not overlap with each other in a large portion in the circumferential direction of the
drive sheave 8, forces from themain ropes 11 and 12 acting radially on thedrive sheave 8 partially cancel each other out (in the large portion). Thus, strength in the rotating shaft, the bearings, and the frame body supporting the bearings, etc., of thedrive sheave 8 can be reduced, enabling reductions in overall size and weight of the drivingmachine 6. - Next,
Figure 6 is a plan showing an elevator apparatus according toEmbodiment 4 not part of the present invention. In the figure, acar 2 and acounterweight 21 are suspended by amain rope group 10 inside ahoistway 1. A back surface facing portion 21a that faces aback surface 2b when positioned level with thecar 2, and a side surface facing portion 21b that faces asecond side surface 2d when positioned level with thecar 2 are disposed integrally on thecounterweight 21. The side surface facing portion 21b is at a right angle relative to the back surface facing portion 21a. In other words, a horizontal shape of thecounterweight 21 is an L shape. - Hanging
positions counterweight 21 by first and secondmain ropes 11 and 12 are separated from each other when viewed from above. Specifically, the hangingposition 22a of thecounterweight 21 by the first main ropes 11 is disposed on the back surface facing portion 21a, and the hanging position of thecounterweight 21 by the secondmain ropes 12 is disposed on the side surface facing portion 21b. - A wind-around range R1 of first main ropes 11 and a wind-around range R2 of second
main ropes 12 on adrive sheave 8 overlap with each other only partially in a circumferential direction on the drive sheave 8 (overlap range R3). The overlap range R3 is less than one half (1/2) of the wind-around range R1 or the wind-around range R2. The rest of the configuration is similar to that ofEmbodiments - In an elevator apparatus of this kind, because a shared
counterweight 21 is suspended by themain ropes 11 and 12, onecounterweight 21 is sufficient, enabling the number of parts such as counterweight guide rails, etc., to be reduced, and also enabling installation work to be facilitated. - Because the wind-around range R1 and the wind-around range R2 overlap with each other only partially in the circumferential direction of the
drive sheave 8, forces from themain ropes 11 and 12 acting radially on thedrive sheave 8 partially cancel each other out. Thus, strength in the rotating shaft, the bearings, and the frame body supporting the bearings, etc., of thedrive sheave 8 can be reduced, enabling reductions in overall size and weight of the drivingmachine 6. - Moreover, in the above examples, an elevator apparatus using a one-to-one (1:1) roping method is shown, but the roping method is not limited thereto, and for example, the present invention can also be applied to an elevator apparatus using a two-to-one (2:1) roping method. For example, car suspension sheaves may also be mounted to a car, a counterweight suspension sheave mounted to a counterweight, main ropes wound around the car suspension sheaves and the counterweight suspension sheave, and end portions of the main ropes connected to rope end connecting portions that are disposed in an upper portion of a hoistway.
Claims (5)
- An elevator apparatus comprising:a driving machine (6) having a drive sheave (8), the driving machine (6) being disposed in an upper portion of a hoistway (1) such that a rotating shaft of the drive sheave (8) is vertical;a main rope group (10) that is wound around the drive sheave (8) ;a car (2) that is suspended inside the hoistway (1) by the main rope group (10) and raised and lowered inside the hoistway (1) by a driving force from the driving machine (6);first and second counterweights (3, 4) that are suspended inside the hoistway (1) by the main rope group (10) and raised and lowered inside the hoistway (1) by the driving force from the driving machine (6) ; anda deflection pulley group (14) that is disposed in an upper portion of the hoistway (1) so as to direct the main rope group (10) from the drive sheave (8) toward the car (2), the first counterweight (3), and the second counterweight (4), wherein the main rope group (10) includes a first main rope (11) that suspends the car (2) and the first counterweight (3), and a second main rope (12) that suspends the car (2) and the second counterweight (4);the deflection pulley group (14) includes a first car deflection pulley (15) that directs the first main rope (11) from the drive sheave (8) toward the car (2), a first counterweight deflection pulley (16) that directs the first main rope (11) from the drive sheave (8) toward the first counterweight (3), a second car deflection pulley (17) that directs the second main rope (12) from the drive sheave (8) toward the car (2), and a second counterweight deflection pulley (18) that directs the second main rope (12) from the drive sheave (8) toward the second counterweight (4); andhanging positions (13a and 13b) of the car (2) by the first and second main ropes (11 and 12) are separated from each other when viewed from above, characterized in that a wind-around range (R1) of the first main rope (11) and a wind-around range (R2) of the second main rope (12) on the drive sheave (8) are centrosymmetric to each other relative to the rotating shaft of the drive sheave (8).
- An elevator apparatus comprising:a driving machine (6) having a drive sheave (8), the driving machine (6) being disposed in an upper portion of a hoistway (1) such that a rotating shaft of the drive sheave (8) is vertical;a main rope group (10) that is wound around the drive sheave (8);a car (2) that is suspended inside the hoistway (1) by the main rope group (10) and raised and lowered inside the hoistway (1) by a driving force from the driving machine (6);a counterweight (21) that is suspended inside the hoistway (1) by the main rope group (10) and raised and lowered inside the hoistway (1) by the driving force from the driving machine (6); anda deflection pulley group (14) that is disposed in an upper portion of the hoistway (1) so as to direct the main rope group (10) from the drive sheave (8) toward the car (2) and the counterweight (21), wherein the main rope group (10) includes a first main rope (11) and a second main rope (12);the deflection pulley group (14) includes a first car deflection pulley (15) that directs the first main rope (11) from the drive sheave (8) toward the car (2), a first counterweight deflection pulley (16) that directs the first main rope (11) from the drive sheave (8) toward the counterweight (21), a second car deflection pulley (17) that directs the second main rope (12) from the drive sheave (8) toward the car (2), and a second counterweight deflection pulley (18) that directs the second main rope (12) from the drive sheave (8) toward the counterweight (21);hanging positions (13a and 13b) of the car (2) by the first and second main ropes (11 and 12) are separated from each other when viewed from above; andhanging positions (22a and 22b) of the counterweight (21) by the first and second main ropes (11 and 12) are separated from each other when viewed from above, characterized in that a wind-around range (R1) of the first main rope (11) and a wind-around range (R2) of the second main rope (12) on the drive sheave (8) are centrosymmetric to each other relative to the rotating shaft of the drive sheave (8).
- The elevator apparatus according to either Claim 1 or Claim 2, characterized in that the hanging positions (13a and 13b) of the car (2) by the first and second main ropes (11 and 12) are centrosymmetric to each other relative to a center of gravity of the car (2) when viewed from above.
- The elevator apparatus according to either Claim 1 or Claim 2, characterized in that the driving machine (6) and the deflection pulley group (14) are disposed between the car (2) and a ceiling (1a) of the hoistway (1) when the car (2) is stopped at an uppermost floor.
- The elevator apparatus according to Claim 2, characterized in that:the car (2) has a front surface (2a) and a back surface (2b) on opposite sides from each other, and first and second side surfaces (2c and 2d) on opposite sides from each other;a back surface facing portion (21a) that faces the back surface (2b) when positioned level with the car (2), and a side surface facing portion (21b) that faces one of the first and second side surfaces (2c and 2d) when positioned level with the car (2) are disposed integrally on the counterweight (21); anda hanging position (22a) of the counterweight (21) by the first main rope (11) is disposed on the back surface facing portion (21a), and a hanging position (22b) of the counterweight (21) by the second main rope (12) is disposed on the side surface facing portion (21b) .
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/015051 WO2006040813A1 (en) | 2004-10-13 | 2004-10-13 | Elevator apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1801061A1 EP1801061A1 (en) | 2007-06-27 |
EP1801061A4 EP1801061A4 (en) | 2012-02-08 |
EP1801061B1 true EP1801061B1 (en) | 2013-07-03 |
Family
ID=36148115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04822312.7A Expired - Fee Related EP1801061B1 (en) | 2004-10-13 | 2004-10-13 | Elevator apparatus |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1801061B1 (en) |
JP (1) | JP4762907B2 (en) |
CN (1) | CN100532234C (en) |
WO (1) | WO2006040813A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006095390A1 (en) * | 2005-03-04 | 2006-09-14 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
WO2007010589A1 (en) * | 2005-07-15 | 2007-01-25 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
WO2007135716A1 (en) * | 2006-05-19 | 2007-11-29 | Mitsubishi Denki Kabushiki Kaisha | Elevator device |
WO2007138707A1 (en) * | 2006-06-01 | 2007-12-06 | Mitsubishi Electric Corporation | Elevator device |
FI124541B (en) | 2011-05-18 | 2014-10-15 | Kone Corp | Hissarrangemeng |
FI125114B (en) | 2011-09-15 | 2015-06-15 | Kone Corp | Suspension and control device for an elevator |
CN109969912A (en) * | 2017-12-27 | 2019-07-05 | 日立电梯(中国)有限公司 | A kind of elevator of double counterweight hangings |
CN110077930A (en) * | 2019-04-19 | 2019-08-02 | 董代军 | It is a kind of for old residential building outside double traction machine emergency staircases |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5431282Y2 (en) * | 1973-05-24 | 1979-10-01 | ||
JPS61291382A (en) * | 1985-06-17 | 1986-12-22 | 三菱電機株式会社 | Elevator |
JPH0570058A (en) * | 1991-09-17 | 1993-03-23 | Hitachi Building Syst Eng & Service Co Ltd | Elevator device |
JPH11310372A (en) * | 1998-04-28 | 1999-11-09 | Toshiba Elevator Co Ltd | Elevator equipment |
ES2161183B1 (en) | 1998-12-22 | 2002-08-01 | Otis Elevator Co | "FLAT ELEVATOR MACHINE THAT HAS VERTICALLY ORIENTED ROTATION.". |
JP4404999B2 (en) | 1999-08-16 | 2010-01-27 | 三菱電機株式会社 | Elevator equipment |
JP2002068641A (en) * | 2000-08-24 | 2002-03-08 | Mitsubishi Electric Corp | Elevator apparatus |
WO2003074409A1 (en) | 2002-03-01 | 2003-09-12 | Mitsubishi Denki Kabushiki Kaisha | Elevaltor apparatus |
CN1297468C (en) * | 2002-09-03 | 2007-01-31 | 三菱电机株式会社 | Elevator |
EP1693328B1 (en) * | 2003-12-09 | 2013-04-24 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
-
2004
- 2004-10-13 CN CNB2004800361729A patent/CN100532234C/en not_active Expired - Fee Related
- 2004-10-13 EP EP04822312.7A patent/EP1801061B1/en not_active Expired - Fee Related
- 2004-10-13 WO PCT/JP2004/015051 patent/WO2006040813A1/en active Application Filing
- 2004-10-13 JP JP2006540797A patent/JP4762907B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1801061A4 (en) | 2012-02-08 |
CN100532234C (en) | 2009-08-26 |
JP4762907B2 (en) | 2011-08-31 |
WO2006040813A1 (en) | 2006-04-20 |
CN1890169A (en) | 2007-01-03 |
EP1801061A1 (en) | 2007-06-27 |
JPWO2006040813A1 (en) | 2008-05-15 |
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