EP1329412B1 - Elevator device - Google Patents
Elevator device Download PDFInfo
- Publication number
- EP1329412B1 EP1329412B1 EP00964753A EP00964753A EP1329412B1 EP 1329412 B1 EP1329412 B1 EP 1329412B1 EP 00964753 A EP00964753 A EP 00964753A EP 00964753 A EP00964753 A EP 00964753A EP 1329412 B1 EP1329412 B1 EP 1329412B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- car
- lower car
- hoistway
- driving machine
- counterweight
- 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 - Lifetime
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Classifications
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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
- B66B11/0095—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave where multiple cars drive in the same hoist way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
Definitions
- the present invention relates to an elevator apparatus in which a plurality of cars are raised and lowered inside a common hoistway.
- an elevator apparatus is disclosed in Japanese Utility Model Laid-Open No. HEI 1-132660 , for example, in which two cars are raised and lowered inside different hoistways using a single counterweight for the two cars.
- this elevator apparatus a wide hoistway space is required in order to dispose the two cars and the single counterweight horizontally.
- an elevator apparatus is disclosed in Japanese Patent Laid-Open No. SHO 59-153773 , for example, in which two cars are disposed vertically inside a common hoistway.
- this elevator apparatus since an upper car is suspended by 1:1 roping, a lower car by 2:1 roping, and two counterweights are required, the construction of the apparatus is complex.
- US 1,837,643 discloses an elevator system having two elevator cars arranged in one hoistway as well as one counterweight common to both of the cars. Further, this document discloses two drum machines raising and lowering the elevator cars.
- the present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling two cars to be disposed inside a single hoistway efficiently and enabling a compact overall construction.
- an elevator apparatus including: a hoistway; an upper car raised and lowered inside the hoistway; a lower car disposed below the upper car, the lower car being raised and lowered inside the hoistway independently from the upper car; a counterweight raised and lowered inside the hoistway; an upper car driving machine for raising and lowering the upper car, the upper car driving machine having an upper car drive sheave and being disposed in an upper portion inside the hoistway; a lower car driving machine for raising and lowering the lower car, the lower car driving machine having a lower car drive sheave and being disposed in an upper portion inside the hoistway; and a main rope body for suspending the upper car, the lower car, and the counterweight, the main rope body being wound around the upper car drive sheave and the lower car drive sheave.
- Figure 1 is a side elevation showing an elevator apparatus according to Embodiment 1 of the present invention and Figure 2 is a plan showing the elevator apparatus in Figure 1 .
- a pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed inside a hoistway 1.
- An upper car 4 and a lower car 5 are each guided by the car guide rails 2 so as to be independently raised and lowered inside the hoistway 1.
- a counterweight 6 is guided by the counterweight guide rails 3 so as to be raised and lowered inside the hoistway 1.
- a support platform 7 is disposed in an upper portion inside the hoistway 1.
- the support platform 7 is supported by the car guide rails 2 and the counterweight guide rails 3.
- An upper car driving machine 8 for raising and lowering the upper car 4 and a lower car driving machine 9 for raising and lowering the lower car 5 are supported by the support platform 7.
- the upper car driving machine 8 includes an upper car drive sheave 8a.
- the lower car driving machine 9 includes a lower car drive sheave 9a.
- the counterweight 6 is disposed behind the upper car 4 and the lower car 5, and a center line of the pair of counterweight guide rails 3 is parallel to a straight line connecting centers of rotation of the upper car drive sheave 8a and the lower car drive sheave 9a.
- a main rope body 11 composed of a plurality of main ropes 10 each made of a synthetic fiber rope is wound around the upper car drive sheave 8a and the lower car drive sheave 9a.
- the upper car 4, the lower car 5, and the counterweight 6 are suspended inside the hoistway 1 by the main rope body 11.
- the upper car drive sheave 8a and the lower car drive sheave 9a are disposed such that their respective positions in a height direction are offset from each other in order to prevent interference among portions of the main rope body 11.
- An upper car deflection sheave 12, first and second counterweight deflection sheaves 13 and 14, first and second lower car deflection sheaves 15 and 16, and a horizontal deflection sheave 17 are supported by the support platform 7.
- the upper car deflection sheave 12 directs the main rope body 11 from the upper car drive sheave 8a to the upper car 4.
- the first counterweight deflection sheave 13 directs the main rope body 11 from the upper car drive sheave 8a to the counterweight 6.
- the second counterweight deflection sheave 14 directs the main rope body 11 from the lower car drive sheave 9a to the counterweight 6.
- the main ropes 10 in the main rope body 11 are distributed in first and second directions so as to pass along first and second sides of the upper car 4.
- a first distributed portion of the main rope body 11 is directed toward the lower car 5 by the first lower car deflection sheave 15.
- a second distributed portion of the main rope body 11 is directed toward the lower car 5 by the second lower car deflection sheave 16 and the horizontal deflection sheave 17.
- a counterweight suspension sheave 18 around which the main rope body 11 is wound is disposed on an upper portion of the counterweight 6.
- a first end portion of the main rope body 11 is connected to a central portion of an upper portion of the upper car 4.
- the main rope body 11 is wound in sequence from the first end portion around the upper car deflection sheave 12, the upper car drive sheave 8a, the first counterweight deflection sheave 13, the counterweight suspension sheave 18, the second counterweight deflection sheave 14, and the lower car drive sheave 9a and is then distributed in the first and second directions.
- Second end portions of the first and second distributed portions of main rope body 11 are connected to lower portions of first and second sides of the lower car 5, respectively.
- the upper car 4 and the lower car 5 are each suspended by a 1:1 roping method and the counterweight 6 is suspended by a 2:1 roping method relative to the upper car drive sheave 8a and the lower car drive sheave 9a.
- An interference detection switch 19 for detecting interference with the upper car 4 and an inter-car buffer 20 for buffering impact if the upper car 4 collides are both mounted on upper portions of the lower car 5.
- a plurality of buffers 21 are installed in a pit (a bottom portion) 1a in the hoistway 1 to buffer impact if the lower car 5 collides into the pit 1a.
- a standby space 1b for the lower car 5 to stand by in is reserved in the pit 1a.
- a pair of left and right compensating ropes 22 are suspended from lower portions of the upper car 4, the lower car 5, and the counterweight 6.
- Figure 3 is a side elevation showing part of Figure 1 enlarged
- Figure 4 is a plan showing part of Figure 3 .
- a pair of return sheaves 23 around which the compensating ropes 22 are wound are disposed on a lower portion of the counterweight 6.
- a pair of first upper car tension sheaves 24, a pair of second upper car tension sheaves 25, a pair of first lower car tension sheaves 26, and a pair of second lower car tension sheaves 27 are disposed in the pit 1a.
- First end portions of the compensating ropes 22 are connected to lower portions of the upper car 4, and second end portions of the compensating ropes 22 are connected to lower portions of the lower car 5. Furthermore, intermediate portions of the compensating ropes 22 are wound in sequence around the first upper car tension sheaves 24, the second upper car tension sheaves 25, the return sheaves 23, the first lower car tension sheaves 26, and the second lower car tension sheaves 27.
- a fixed cable hanger 28 is fixed inside the hoistway 1.
- the fixed cable hanger 28 is fixed to the car guide rails 2.
- Upper car and lower car cable hangers 29 and 30 are disposed on the upper car 4 and the lower car 5, respectively.
- a flexible upper car control cable 31 is connected between the fixed cable hanger 28 and the upper car cable hanger 29.
- a flexible lower car control cable 32 is similarly connected between the fixed cable hanger 28 and the lower car cable hanger 30.
- Figure 5 is a side elevation showing an upper portion inside the hoistway in Figure 1 enlarged.
- the upper car driving machine 8 is fixed to the support platform 7 by means of support brackets 33.
- a plurality of elastic bodies 34 are interposed between the support brackets 33 and the upper car driving machine 8.
- the support construction of the lower car driving machine 9 is similar to that of the upper car driving machine 8.
- FIG 6 is a perspective showing a construction of a main rope 10 from Figure 1 .
- an inner strand layer 44 having a plurality of inner strands 42 and filler strands 43 disposed in gaps between these inner strands 42 is disposed around a core wire 41.
- Each of the inner strands 42 is composed of a plurality of aramid fibers and an impregnating material such as a polyurethane or the like.
- the filler strands 43 are composed of a polyamide, for example.
- An outer strand layer 46 having a plurality of outer strands 45 is disposed around an outer circumference of the inner strand layer 44.
- Each of the outer strands 45 is composed of a plurality of aramid fibers and an impregnating material such as a polyurethane or the like in a similar manner to the inner strands 42.
- a friction-reducing coating layer 47 for preventing abrasion of the strands 42 and 45 due to friction among the strands 42 and 45 during winding onto the drive sheaves 8a and 9a is disposed between the inner strand layer 44 and the outer strand layer 46.
- a protective coating layer 48 is also disposed on an outer circumferential portion of the outer strand layer 46.
- a synthetic fiber rope of this kind has a high coefficient of friction compared to a steel rope and is superior in flexibility.
- the upper car 4 and the lower car 5 are each suspended by a 1:1 roping method and the counterweight 6 is suspended by a 2:1 roping method relative to the upper car drive sheave 8a and the lower car drive sheave 9a, only one counterweight 6 is required, enabling the construction to be simplified.
- the upper car driving machine 8 and the lower car driving machine 9 are disposed horizontally, and a plurality of deflection sheaves 12 to 17 for directing the main rope body 11 from the upper car drive sheave 8a and the lower car drive sheave 9a to the upper car 4, the lower car 5, and the counterweight 6 are disposed in the upper portion inside the hoistway 1, a compact overall construction is made possible.
- the upper car driving machine 8, the lower car driving machine 9, and all of the deflection sheaves 12 to 17 are supported on the common support platform 7, the number of parts is reduced, also making a compact overall construction possible.
- the support platform 7 is supported by the guide rails 2 and 3, a load acting on the support platform 7 can be borne by the pit 1a via the guide rails 2 and 3.
- the support platform 7 may also be supported directly by a building, and in that case, the load acting on the guide rails 2 and 3 is alleviated, enabling a cross-sectional area of the guide rails 2 and 3 to be reduced.
- the lower car 5 can be stably suspended.
- the lower car 5 since a standby space 1b for the lower car 5 to stand by in is reserved in the pit 1a of the hoistway 1, the upper car 4 can be stopped at a lowermost landing, and when the work load on the elevator apparatus is small, the lower car 5 may also be made to stand by in the standby space 1b while only the upper car 4 operates, enabling operating efficiency to be improved.
- control cables 31 and 32 are disposed outside a region of movement of the upper car 4, the lower car 5, and the counterweight 6, the control cables 31 and 32 will not interfere with the upper car 4, the lower car 5, or the counterweight 6.
- main ropes 10 made of a synthetic fiber rope having a high coefficient of friction and superior flexibility are used, diameters of the drive sheaves 8a and 9a and the deflection sheaves 12 to 17 can be reduced, making an even more compact overall construction possible.
- the upper car 4 is suspended by a central portion of an upper portion thereof, but may be suspended by first and second side portions by distributing the plurality of main ropes 10 in a similar manner to the lower car 5.
- the single counterweight 6 is used for the two cars 4 and 5, but two counterweights may also be used.
- the counterweight 6 is disposed behind the cars 4 and 5, but the present invention can also be applied to an elevator apparatus in which the counterweight 6 is disposed beside the cars 4 and 5, as shown in Figure 7 , for example.
- the center line of the pair of counterweight guide rails 3 is perpendicular to the straight line connecting the centers of rotation of the upper car drive sheave 8a and the lower car drive sheave 9a.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
- The present invention relates to an elevator apparatus in which a plurality of cars are raised and lowered inside a common hoistway.
- Conventionally, an elevator apparatus is disclosed in Japanese Utility Model Laid-Open No.
HEI 1-132660 - Furthermore, an elevator apparatus is disclosed in Japanese Patent Laid-Open No.
SHO 59-153773 - In addition, since a rope passes through the counterweight, installation of the rope is time-consuming, and there is a possibility that the rope will interfere with the counterweight In addition, since a rope passes through the counterweight, installation of the rope is time-consuming, and there is a possibility that the rope will interfere with the counterweight due to swinging. Still furthermore, since the weight of the counterweight is reduced by providing a penetrating aperture for the rope, external dimensions of the counterweight must be increased to compensate.
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US 1,837,643 discloses an elevator system having two elevator cars arranged in one hoistway as well as one counterweight common to both of the cars. Further, this document discloses two drum machines raising and lowering the elevator cars. - The present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling two cars to be disposed inside a single hoistway efficiently and enabling a compact overall construction.
- According to one aspect of the present invention, there is provided an elevator apparatus including: a hoistway; an upper car raised and lowered inside the hoistway; a lower car disposed below the upper car, the lower car being raised and lowered inside the hoistway independently from the upper car; a counterweight raised and lowered inside the hoistway; an upper car driving machine for raising and lowering the upper car, the upper car driving machine having an upper car drive sheave and being disposed in an upper portion inside the hoistway; a lower car driving machine for raising and lowering the lower car, the lower car driving machine having a lower car drive sheave and being disposed in an upper portion inside the hoistway; and a main rope body for suspending the upper car, the lower car, and the counterweight, the main rope body being wound around the upper car drive sheave and the lower car drive sheave.
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Figure 1 is a side elevation showing an elevator apparatus according to Embodiment 1 of the present invention; -
Figure 2 is a plan showing the elevator apparatus inFigure 1 ; -
Figure 3 is a side elevation showing part ofFigure 1 enlarged; -
Figure 4 is a plan showing part ofFigure 3 ; -
Figure 5 is a side elevation showing an upper portion inside a hoistway fromFigure 1 enlarged; -
Figure 6 is a perspective showing a construction of a main rope fromFigure 1 ; and -
Figure 7 is a plan showing an elevator apparatus according toEmbodiment 2 of the present invention. - Preferred embodiments of the present invention will now be explained with reference to the drawings.
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Figure 1 is a side elevation showing an elevator apparatus according to Embodiment 1 of the present invention andFigure 2 is a plan showing the elevator apparatus inFigure 1 . - In the figures, a pair of
car guide rails 2 and a pair ofcounterweight guide rails 3 are installed inside a hoistway 1. Anupper car 4 and alower car 5 are each guided by thecar guide rails 2 so as to be independently raised and lowered inside the hoistway 1. Acounterweight 6 is guided by thecounterweight guide rails 3 so as to be raised and lowered inside the hoistway 1. - A
support platform 7 is disposed in an upper portion inside the hoistway 1. Thesupport platform 7 is supported by thecar guide rails 2 and thecounterweight guide rails 3. An uppercar driving machine 8 for raising and lowering theupper car 4 and a lowercar driving machine 9 for raising and lowering thelower car 5 are supported by thesupport platform 7. The uppercar driving machine 8 includes an uppercar drive sheave 8a. The lowercar driving machine 9 includes a lowercar drive sheave 9a. - Moreover, the
counterweight 6 is disposed behind theupper car 4 and thelower car 5, and a center line of the pair ofcounterweight guide rails 3 is parallel to a straight line connecting centers of rotation of the uppercar drive sheave 8a and the lowercar drive sheave 9a. - A main rope body 11 composed of a plurality of
main ropes 10 each made of a synthetic fiber rope is wound around the uppercar drive sheave 8a and the lowercar drive sheave 9a. Theupper car 4, thelower car 5, and thecounterweight 6 are suspended inside the hoistway 1 by the main rope body 11. The uppercar drive sheave 8a and the lowercar drive sheave 9a are disposed such that their respective positions in a height direction are offset from each other in order to prevent interference among portions of the main rope body 11. - An upper
car deflection sheave 12, first and secondcounterweight deflection sheaves car deflection sheaves horizontal deflection sheave 17 are supported by thesupport platform 7. - The upper car deflection sheave 12 directs the main rope body 11 from the upper
car drive sheave 8a to theupper car 4. The first counterweight deflection sheave 13 directs the main rope body 11 from the uppercar drive sheave 8a to thecounterweight 6. The second counterweight deflection sheave 14 directs the main rope body 11 from the lowercar drive sheave 9a to thecounterweight 6. - At an intermediate point between the lower
car drive sheave 9a and thelower car 5, themain ropes 10 in the main rope body 11 are distributed in first and second directions so as to pass along first and second sides of theupper car 4. A first distributed portion of the main rope body 11 is directed toward thelower car 5 by the first lowercar deflection sheave 15. A second distributed portion of the main rope body 11 is directed toward thelower car 5 by the second lowercar deflection sheave 16 and thehorizontal deflection sheave 17. - A counterweight suspension sheave 18 around which the main rope body 11 is wound is disposed on an upper portion of the
counterweight 6. - A first end portion of the main rope body 11 is connected to a central portion of an upper portion of the
upper car 4. The main rope body 11 is wound in sequence from the first end portion around the uppercar deflection sheave 12, the uppercar drive sheave 8a, the firstcounterweight deflection sheave 13, thecounterweight suspension sheave 18, the secondcounterweight deflection sheave 14, and the lowercar drive sheave 9a and is then distributed in the first and second directions. Second end portions of the first and second distributed portions of main rope body 11 are connected to lower portions of first and second sides of thelower car 5, respectively. - Hence, the
upper car 4 and thelower car 5 are each suspended by a 1:1 roping method and thecounterweight 6 is suspended by a 2:1 roping method relative to the uppercar drive sheave 8a and the lowercar drive sheave 9a. - An interference detection switch 19 for detecting interference with the
upper car 4 and aninter-car buffer 20 for buffering impact if theupper car 4 collides are both mounted on upper portions of thelower car 5. A plurality ofbuffers 21 are installed in a pit (a bottom portion) 1a in the hoistway 1 to buffer impact if thelower car 5 collides into the pit 1a. - Furthermore, a standby space 1b for the
lower car 5 to stand by in is reserved in the pit 1a. A pair of left and right compensatingropes 22 are suspended from lower portions of theupper car 4, thelower car 5, and thecounterweight 6. -
Figure 3 is a side elevation showing part ofFigure 1 enlarged, andFigure 4 is a plan showing part ofFigure 3 . A pair ofreturn sheaves 23 around which the compensatingropes 22 are wound are disposed on a lower portion of thecounterweight 6. A pair of first uppercar tension sheaves 24, a pair of second uppercar tension sheaves 25, a pair of first lowercar tension sheaves 26, and a pair of second lowercar tension sheaves 27 are disposed in the pit 1a. - First end portions of the compensating
ropes 22 are connected to lower portions of theupper car 4, and second end portions of the compensatingropes 22 are connected to lower portions of thelower car 5. Furthermore, intermediate portions of the compensatingropes 22 are wound in sequence around the first uppercar tension sheaves 24, the second uppercar tension sheaves 25, thereturn sheaves 23, the first lowercar tension sheaves 26, and the second lowercar tension sheaves 27. - A
fixed cable hanger 28 is fixed inside the hoistway 1. Thefixed cable hanger 28 is fixed to thecar guide rails 2. Upper car and lowercar cable hangers upper car 4 and thelower car 5, respectively. A flexible uppercar control cable 31 is connected between thefixed cable hanger 28 and the uppercar cable hanger 29. A flexible lowercar control cable 32 is similarly connected between the fixedcable hanger 28 and the lowercar cable hanger 30. -
Figure 5 is a side elevation showing an upper portion inside the hoistway inFigure 1 enlarged. The uppercar driving machine 8 is fixed to thesupport platform 7 by means of support brackets 33. A plurality ofelastic bodies 34 are interposed between the support brackets 33 and the uppercar driving machine 8. The support construction of the lowercar driving machine 9 is similar to that of the uppercar driving machine 8. -
Figure 6 is a perspective showing a construction of amain rope 10 fromFigure 1 . In the figure, aninner strand layer 44 having a plurality ofinner strands 42 andfiller strands 43 disposed in gaps between theseinner strands 42 is disposed around acore wire 41. Each of theinner strands 42 is composed of a plurality of aramid fibers and an impregnating material such as a polyurethane or the like. Thefiller strands 43 are composed of a polyamide, for example. - An
outer strand layer 46 having a plurality ofouter strands 45 is disposed around an outer circumference of theinner strand layer 44. Each of theouter strands 45 is composed of a plurality of aramid fibers and an impregnating material such as a polyurethane or the like in a similar manner to theinner strands 42. - A friction-reducing
coating layer 47 for preventing abrasion of thestrands strands inner strand layer 44 and theouter strand layer 46. Aprotective coating layer 48 is also disposed on an outer circumferential portion of theouter strand layer 46. A synthetic fiber rope of this kind has a high coefficient of friction compared to a steel rope and is superior in flexibility. - In an elevator apparatus of this kind, since the
upper car 4 and thelower car 5 are raised and lowered inside the common hoistway 1 independently, transport capacity can be raised and the twocars car driving machine 8 and the lowercar driving machine 9 are disposed in the upper portion inside the hoistway 1, a compact overall construction is made possible. - In addition, because the
upper car 4 and thelower car 5 are each suspended by a 1:1 roping method and thecounterweight 6 is suspended by a 2:1 roping method relative to the uppercar drive sheave 8a and the lowercar drive sheave 9a, only onecounterweight 6 is required, enabling the construction to be simplified. - Still furthermore, because the upper
car driving machine 8 and the lowercar driving machine 9 are disposed horizontally, and a plurality of deflection sheaves 12 to 17 for directing the main rope body 11 from the uppercar drive sheave 8a and the lowercar drive sheave 9a to theupper car 4, thelower car 5, and thecounterweight 6 are disposed in the upper portion inside the hoistway 1, a compact overall construction is made possible. - Furthermore, because the upper
car driving machine 8, the lowercar driving machine 9, and all of the deflection sheaves 12 to 17 are supported on thecommon support platform 7, the number of parts is reduced, also making a compact overall construction possible. - In addition, since the
support platform 7 is supported by theguide rails support platform 7 can be borne by the pit 1a via theguide rails support platform 7 may also be supported directly by a building, and in that case, the load acting on theguide rails guide rails - Still furthermore, because the plurality of
elastic bodies 34 are interposed between the uppercar driving machine 8 and thesupport platform 7 and between the lowercar driving machine 9 and thesupport platform 7, vibration from thedriving machines - Furthermore, because the plurality of
main ropes 10 are distributed so as to pass along the first and second sides of theupper car 4 at an intermediate point between thelower car 5 and the lowercar driving machine 9, thelower car 5 can be stably suspended. - In addition, since a standby space 1b for the
lower car 5 to stand by in is reserved in the pit 1a of the hoistway 1, theupper car 4 can be stopped at a lowermost landing, and when the work load on the elevator apparatus is small, thelower car 5 may also be made to stand by in the standby space 1b while only theupper car 4 operates, enabling operating efficiency to be improved. - Still furthermore, since the
control cables upper car 4, thelower car 5, and thecounterweight 6, thecontrol cables upper car 4, thelower car 5, or thecounterweight 6. - Furthermore, because
main ropes 10 made of a synthetic fiber rope having a high coefficient of friction and superior flexibility are used, diameters of the drive sheaves 8a and 9a and the deflection sheaves 12 to 17 can be reduced, making an even more compact overall construction possible. - Moreover, in Embodiment 1, the
upper car 4 is suspended by a central portion of an upper portion thereof, but may be suspended by first and second side portions by distributing the plurality ofmain ropes 10 in a similar manner to thelower car 5. - Furthermore, in Embodiment 1, the
single counterweight 6 is used for the twocars - In addition, in Embodiment 1, the
counterweight 6 is disposed behind thecars counterweight 6 is disposed beside thecars Figure 7 , for example. In this case, the center line of the pair ofcounterweight guide rails 3 is perpendicular to the straight line connecting the centers of rotation of the uppercar drive sheave 8a and the lowercar drive sheave 9a.
Claims (10)
- An elevator apparatus comprising:a hoistway (1);an upper car (4) raised and lowered inside said hoistway (1); a lower car (5) disposed below said upper car.(4), said lower car (5) being raised and lowered inside said hoistway (1) independently from said upper car (4);a counterweight (6) raised and lowered inside said hoistway (1) ;an upper car driving machine (8) for raising and lowering said upper car (4), said upper car driving machine (8) having an upper car drive sheave (8a) and being disposed in an upper portion inside said hoistway (1);a lower car driving machine (9) for raising and lowering said lower car (5), said lower car driving machine (9) having a lower car drive sheave (9a) and being disposed in an upper portion inside said hoistway (1); anda main rope body (11) for suspending said upper car (.4), said lower car (5), and said counterweight (6), said main rope body (11) being wound around said upper car drive sheave (8a) and said lower car drive sheave (9a) , characterized in that the upper car driving machine (8) and the lower car driving machine (9) are disposed such that they are overlapped with one another in a vertical direction and distanced from one another in a horizontal direction.
- The elevator apparatus according to claim 1, wherein said upper car (4) and said lower car (5) are each suspended by a 1:1 roping method and said counterweight (6) is suspended by a 2:1 roping method relative to said upper car drive sheave (8a) and said lower car drive sheave (9a).
- The elevator apparatus according to claim 1, wherein said upper car driving machine (8) and said lower car driving machine (9) are disposed horizontally such that a rotating shaft of each of said drive sheaves (8a, 9a) extends in a vertical direction, a plurality of deflection sheaves (12, 13, 14, 15, 16, 17) for directing said main rope body (11) from said upper car drive sheave(-8a.) and said lower car drive sheave (9a) to said upper car (4), said lower car (5), and said counterweight (6) being disposed in an upper portion inside said hoistway (1).
- The elevator apparatus according to claim 3, wherein said upper car driving machine (8), said lower car driving machine (9), and all of said deflection sheaves (12, 13, 14, 1.5, 16, 17) are supported by a common support platform (7) disposed in an upper portion inside said hoistway (1).
- The elevator apparatus according to claim 4, wherein a plurality of elastic bodies (34) are interposed between said upper car driving machine (8) and said support platform (7) and between said lower car driving machine (9) and said support platform (7).
- The elevator apparatus according to claim 1, wherein said main rope body (11) includes a plurality of main ropes (10), said plurality of main ropes (11) being distributed at an intermediate point between said lower car driving machine (9) and said lower car (5) so as to pass along first and second sides of said upper car (4).
- The elevator apparatus according to claim 1, wherein a pair of counterweight guide rails (3) for guiding raising and lowering of said counterweight (6) are installed inside said hoistway (1), a center line of said pair of counterweight guide rails (3) being parallel to a straight line connecting centers of rotation of said upper car drive sheave (8a) and said lower car drive sheave (9a).
- The elevator apparatus according to claim 1, wherein a pair of counterweight guide rails (3) for guiding raising and lowering of said counterweight (6) are installed inside said hoistway (1), a center line of said pair of counterweight guide rails (3) being perpendicular to a straight line connecting centers of rotation of said upper car drive sheave (8a) and said lower car drive sheave (9a).
- The elevator apparatus according to claim 1, wherein a standby space (1b) for said lower car (5) to stand by in is reserved in a pit of said hoistway (1).
- The elevator apparatus according to claim 1, wherein said main rope body (11) includes a main rope (10) made of a synthetic fiber rope.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2000/007026 WO2002030801A1 (en) | 2000-10-10 | 2000-10-10 | Elevator device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1329412A1 EP1329412A1 (en) | 2003-07-23 |
EP1329412A4 EP1329412A4 (en) | 2006-06-14 |
EP1329412B1 true EP1329412B1 (en) | 2009-12-09 |
Family
ID=11736575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00964753A Expired - Lifetime EP1329412B1 (en) | 2000-10-10 | 2000-10-10 | Elevator device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1329412B1 (en) |
JP (1) | JP4786121B2 (en) |
CN (1) | CN1226176C (en) |
DE (1) | DE60043517D1 (en) |
WO (1) | WO2002030801A1 (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1512652B1 (en) * | 2002-06-10 | 2010-08-11 | Mitsubishi Denki Kabushiki Kaisha | Elevator |
IL157277A (en) * | 2002-09-05 | 2007-12-03 | Inventio Ag | Lift installation and method of arranging a drive engine of a lift installation |
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US1837643A (en) * | 1931-03-28 | 1931-12-22 | Otis Elevator Co | Elevator system |
JPS59153773A (en) * | 1983-02-04 | 1984-09-01 | 株式会社東芝 | Elevator |
JPS60191982A (en) * | 1984-03-14 | 1985-09-30 | 株式会社東芝 | Support beam for winding machine of elevator |
JPH0313484A (en) * | 1989-06-08 | 1991-01-22 | Mitsubishi Electric Corp | Elevator device |
JPH07187525A (en) * | 1993-11-18 | 1995-07-25 | Masami Sakita | Elevator system with plural cars |
US5419414A (en) * | 1993-11-18 | 1995-05-30 | Sakita; Masami | Elevator system with multiple cars in the same hoistway |
CZ282660B6 (en) * | 1994-03-02 | 1997-08-13 | Inventio Ag | Bearer rope of lifting and transport facilities |
ATE273916T1 (en) * | 1996-11-11 | 2004-09-15 | Inventio Ag | ELEVATOR SYSTEM WITH A DRIVE UNIT ARRANGE IN THE ELEVATOR SHAFT |
-
2000
- 2000-10-10 EP EP00964753A patent/EP1329412B1/en not_active Expired - Lifetime
- 2000-10-10 JP JP2002534195A patent/JP4786121B2/en not_active Expired - Fee Related
- 2000-10-10 WO PCT/JP2000/007026 patent/WO2002030801A1/en active Application Filing
- 2000-10-10 DE DE60043517T patent/DE60043517D1/en not_active Expired - Lifetime
- 2000-10-10 CN CN00816962.4A patent/CN1226176C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1329412A1 (en) | 2003-07-23 |
DE60043517D1 (en) | 2010-01-21 |
CN1409687A (en) | 2003-04-09 |
CN1226176C (en) | 2005-11-09 |
WO2002030801A1 (en) | 2002-04-18 |
JP4786121B2 (en) | 2011-10-05 |
JPWO2002030801A1 (en) | 2004-02-19 |
EP1329412A4 (en) | 2006-06-14 |
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