EP1795484B1 - Elevator apparatus - Google Patents
Elevator apparatus Download PDFInfo
- Publication number
- EP1795484B1 EP1795484B1 EP04788377.2A EP04788377A EP1795484B1 EP 1795484 B1 EP1795484 B1 EP 1795484B1 EP 04788377 A EP04788377 A EP 04788377A EP 1795484 B1 EP1795484 B1 EP 1795484B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- car
- counterweight
- hoistway
- drive sheave
- driving unit
- 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
- 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
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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 an elevator apparatus having a structure in which a driving unit for raising/lowering a car and a counterweight is disposed in an upper portion of a hoistway.
- Conventionally, in order to shorten height dimension of a hoistway, there has been proposed an elevator apparatus having a structure in which a hoisting machine is disposed horizontally in an upper portion of the hoistway. A rotary shaft of a drive sheave of the hoisting machine is perpendicular to a horizontal plane. A main rope is horizontally wrapped around the drive sheave. Two turning sheaves for turning the direction of the main rope from a horizontal direction to a vertical direction are provided in the upper portion of the hoistway. A car and a counterweight are suspended within the hoistway by means of the main rope which has been turned by the turning sheaves (see Patent Document 1).
- Patent Document 1:
JP 2000-255933 A - Another elevator apparatus is also known e.g. from
WO-A-03104126 - In the conventional elevator apparatus constructed as described above, however, the car and the counterweight are raised/lowered by the single hoisting machine, so the hoisting machine is increased in size as the elevator apparatus is increased in capacity. As a result, the entire elevator apparatus cannot be reduced in size.
- The present invention has been made to solve the problem discussed above, and it is therefore an object of the invention to obtain an elevator apparatus allowing an overall size reduction.
- An elevator apparatus of the present invention includes: a first driving unit including a first drive sheave and disposed in an upper portion of a hoistway so that a rotary shaft of the first drive sheave is perpendicular to a horizontal plane; a second driving unit including a second drive sheave and disposed in the upper portion of the hoistway so that a rotary shaft of the second drive sheave is perpendicular to the horizontal plane; a car for being raised/lowered within the hoistway by driving forces of the first driving unit and the second driving unit; a counterweight for being raised/lowered within the hoistway by driving forces of the first driving unit and the second driving unit; a main rope body, for suspending the car and the counterweight within the hoistway, including: a first main rope wrapped around the first drive sheave and including a first end and a second end that are connected to the upper portion of the hoistway; and a second main rope wrapped around the second drive sheave and including a third end and a fourth end that are connected to the upper portion of the hoistway; a first car sash pulley mounted to the car and having wrapped therearound a portion of the first main rope between the first drive sheave and the first end; a second car sash pulley mounted to the car and having wrapped therearound a portion of the second main rope between the second drive sheave and the third end; a first counterweight sash pulley mounted to the counterweight and having wrapped therearound a portion of the first main rope between the first drive sheave and the second end; and a second counterweight sash pulley mounted to the counterweight and having wrapped therearound a portion of the second main rope between the second drive sheave and the fourth end.
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Fig. 1 is a plan view showing an elevator apparatus according toEmbodiment 1 of the present invention. -
Fig. 2 is a front view showing the elevator apparatus ofFig. 1 . -
Fig. 3 is a plan view showing an elevator apparatus according toEmbodiment 2 of the present invention. -
Fig. 4 is a front view showing the elevator apparatus ofFig. 3 . -
Fig. 5 is a plan view showing an elevator apparatus according toEmbodiment 3 of the present invention. -
Fig. 6 is a front view showing the elevator apparatus ofFig. 5 . -
Fig. 7 is a plan view showing an elevator apparatus according toEmbodiment 4 of the present invention. -
Fig. 8 is a front view showing the elevator apparatus ofFig. 7 . - Preferred embodiments of the present invention will be described hereinafter with reference to the drawings.
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Fig. 1 is a plan view showing an elevator apparatus according toEmbodiment 1 of the present invention.Fig. 2 is a front view showing the elevator apparatus ofFig. 1 . Referring toFigs. 1 and2 , a pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed within ahoistway 1. Acar 2 is guided by the respective car guide rails to be raised/lowered within thehoistway 1, and acounterweight 3 is guided by the respective counterweight guide rails to be raised/lowered within thehoistway 1. In this example, a line connecting the respective car guide rails and a line connecting the respective counterweight guide rails are parallel to a line extending along a width direction of thehoistway 1 on a vertical projection plane thereof. - The
car 2 has a firstlateral face portion 2a, a secondlateral face portion 2b, afront face portion 2c, and aback face portion 2d. The firstlateral face portion 2a and the secondlateral face portion 2b are opposed to each other between the respective car guide rails. Thefront face portion 2c is provided with acar doorway 4. Theback face portion 2d is opposed to thefront face portion 2c. Thefront face portion 2c is provided with a pair ofcar doors 5 for opening/closing thecar doorway 4. In this example, a dimension of thecar 2 in a width direction thereof (i.e., dimension between an outer face of the firstlateral face portion 2a and an outer face of the secondlateral face portion 2b) is larger than a dimension of thecar 2 in a depth direction thereof (i.e., dimension between an outer face of thefront face portion 2c and an outer face of theback face portion 2d). - The
counterweight 3 is opposed to theback face portion 2d on the vertical projection plane of thehoistway 1. In other words, when thehoistway 1 is vertically projected, thecounterweight 3 is disposed behind a region of thecar 2 as to the depth direction of thereof. - A first driving unit (hoisting machine) 12 and a second driving unit (hoisting machine) 13 for raising/lowering the
car 2 and thecounterweight 3 are disposed in the upper portion within thehoistway 1. Thefirst driving unit 12 and thesecond driving unit 13 are disposed apart from each other in the width direction of thehoistway 1. Thefirst driving unit 12 and thesecond driving unit 13 are disposed within the region of thecar 2 on the vertical projection plane of thehoistway 1. Furthermore, thefirst driving unit 12 and thesecond driving unit 13 are disposed substantially at the same height. - The
first driving unit 12 has a firstdriving unit body 14 including a motor and a brake, and afirst drive sheave 15 rotated by the firstdriving unit body 14. Thesecond driving unit 13 has a seconddriving unit body 16 including a motor and a brake, and asecond drive sheave 17 rotated by the seconddriving unit body 16. Thefirst driving unit 12 and thesecond driving unit 13 are designed as low-profile hoisting machines having an axial dimension that is smaller than a radial dimension of the firstdriving unit body 14 and the seconddriving unit body 16 or a radial dimension of thefirst drive sheave 15 and thesecond drive sheave 17. - The
first driving unit 12 and thesecond driving unit 13 are disposed horizontally (or substantially horizontally) so that rotary shafts of thefirst drive sheave 15 and thesecond drive sheave 17 extend perpendicularly to a horizontal plane (including a substantially horizontal plane), respectively. Thefirst driving unit 12 and thesecond driving unit 13 are disposed such that thefirst drive sheave 15 and thesecond drive sheave 17 are located above the firstdriving unit body 14 and the seconddriving unit body 16, respectively. - A
main rope body 18 for suspending thecar 2 and thecounterweight 3 within thehoistway 1 is wrapped around thefirst drive sheave 15 and thesecond drive sheave 17. Themain rope body 18 has a plurality of first main ropes 19 (only one of them is shown in the drawings) wrapped around the first drive sheave 15 substantially horizontally, and a plurality of second main ropes 20 (only one of them is shown in the drawings) wrapped around the second drive sheave 17 substantially horizontally. - A pair of first
car sash pulleys car sash pulleys car 2. The firstmain ropes 19 are wrapped around the firstcar sash pulleys main ropes 20 are wrapped around the secondcar sash pulleys car sash pulley 25 and the secondcar sash pulley 27 are provided on the firstlateral face portion 2a side on the lower portion of thecar 2, and the firstcar sash pulley 26 and the secondcar sash pulley 28 are provided on the secondlateral face portion 2b side on the lower portion of thecar 2. - A first
counterweight sash pulley 29 and a secondcounterweight sash pulley 30 are provided on an upper portion of thecounterweight 3. The firstmain ropes 19 are wrapped around the firstcounterweight sash pulley 29, and the secondmain ropes 20 are wrapped around the secondcounterweight sash pulley 30. The firstcounterweight sash pulley 29 and the secondcounterweight sash pulley 30 are provided side by side in a width direction of thecounterweight 3. - A first car
side cleat portion 21, a second carside cleat portion 22, a first counterweightside cleat portion 23, and a second counterweightside cleat portion 24 are provided in the upper portion of thehoistway 1. The first carside cleat portion 21 is disposed above the firstcar sash pulley 26, and the second carside cleat portion 22 is disposed above the secondcar sash pulley 27. The first counterweightside cleat portion 23 is disposed above the firstcounterweight sash pulley 29, and the second counterweightside cleat portion 24 is disposed above the secondcounterweight sash pulley 30. - Each of the first
main ropes 19 has afirst end 19a connected to the first carside cleat portion 21, and asecond end 19b connected to the first counterweightside cleat portion 23. Each of the secondmain ropes 20 has athird end 20a connected to the second carside cleat portion 22, and afourth end 20b connected to the second counterweightside cleat portion 24. - That is, those portions of the first
main ropes 19 which are located between thefirst drive sheave 15 and thefirst end 19a are wrapped around the firstcar sash pulleys main ropes 20 which are located between thesecond drive sheave 17 and thethird end 20a are wrapped around the secondcar sash pulleys main ropes 19 which are located between thefirst drive sheave 15 and thesecond end 19b are wrapped around the firstcounterweight sash pulley 29, and those portions of the secondmain ropes 20 which are located between thesecond drive sheave 17 and thefourth end 20b are wrapped around the secondcounterweight sash pulley 30. - A first car side return
pulley 31 for guiding the firstmain ropes 19 to the firstcar sash pulley 25, a first counterweight side returnpulley 32 for guiding the firstmain ropes 19 to the firstcounterweight sash pulley 29, a second car side returnpulley 33 for guiding the secondmain ropes 20 to the secondcar sash pulley 28, and a second counterweight side returnpulley 34 for guiding the secondmain ropes 20 to the secondcounterweight sash pulley 30 are disposed in the upper portion of thehoistway 1. Respective rotary shafts of the first car side returnpulley 31, the first counterweight side returnpulley 32, the second car side returnpulley 33, and the second counterweight side returnpulley 34 are disposed horizontally (or substantially horizontally). - The first car side return
pulley 31 is disposed above the firstcar sash pulley 25, and the second car side returnpulley 33 is disposed above the secondcar sash pulley 28. The first counterweight returnpulley 32 is disposed above the firstcounterweight sash pulley 29, and the second counterweight returnpulley 34 is disposed above the secondcounterweight sash pulley 30. - The first
main ropes 19 and the secondmain ropes 20, which extend from thefirst drive sheave 15 substantially horizontally, are turned to extend substantially vertically by means of the return pulleys 31 to 34. Thus, the return pulleys 31 to 34 are disposed substantially at the same height as thefirst driving unit 12 and thesecond driving unit 13. - A
first turning sheave 35 and asecond turning sheave 36 are disposed in the upper portion of thehoistway 1 . Those portions of the firstmain ropes 19 which are located between thefirst drive sheave 15 and the first car side returnpulley 31 are wrapped around thefirst turning sheave 35, and those portions of the secondmain ropes 20 which are located between thesecond drive sheave 17 and the second car side returnpulley 33 are wrapped around thesecond turning sheave 36. Thefirst turning sheave 35 and thesecond turning sheave 36 are disposed within the region of thecar 2 on the vertical projection plane of thehoistway 1. Respective rotary shafts of thefirst turning sheave 35 and thesecond turning sheave 36 are disposed perpendicularly to the horizontal plane (including the substantially horizontal plane). Furthermore, thefirst turning sheave 35 and thesecond turning sheave 36 are disposed substantially at the same height as thefirst drive sheave 15 and thesecond drive sheave 17, respectively. - The
car 2 and thecounterweight 3 are suspended within thehoistway 1 according to a 2:1 roping method by means of the firstmain ropes 19 and the secondmain ropes 20. That is, each of the firstmain ropes 19, which extends from thefirst end 19a to thesecond end 19b, is sequentially wrapped around the first car sash pulleys 26 and 25, the first car side returnpulley 31, thefirst turning sheave 35, thefirst drive sheave 15, the first counterweight side returnpulley 32, and the firstcounterweight sash pulley 29. Each of the secondmain ropes 20, which extends from thethird end 20a to thefourth end 20b, is sequentially wrapped around the second car sash pulleys 27 and 28, the second car side returnpulley 33, thesecond turning sheave 36, thesecond drive sheave 17, the second counterweight side returnpulley 34, and the secondcounterweight sash pulley 30. - The
first driving unit 12 and thesecond driving unit 13 are disposed symmetrically to each other, and thefirst turning sheave 35 and thesecond turning sheave 36 are disposed symmetrically to each other, with respect to a centerline of thecar 2 extending along the depth direction of thehoistway 1 on the vertical projection plane of thehoistway 1. A control device (not shown) for controlling thefirst driving unit 12 and thesecond driving unit 13 is provided within thehoistway 1. - Next, an operation will be described. The
first driving unit 12 and thesecond driving unit 13 are driven in synchronization with each other by a signal from the control device. Thus, thefirst drive sheave 15 and thesecond drive sheave 17 are rotated in synchronization with each other, so thecar 2 and thecounterweight 3 are raised/lowered. - In the elevator apparatus constructed as described above, the
car 2 and thecounterweight 3 are raised/lowered within thehoistway 1 by driving forces of thefirst driving unit 12 and thesecond driving unit 13. Thecar 2 and thecounterweight 3 are suspended within thehoistway 1 according to the 2:1 roping method by means of the firstmain ropes 19 and the secondmain ropes 20. Therefore, the loads applied to thefirst driving unit 12 and thesecond driving unit 13 can be lightened, and thefirst driving unit 12 and thesecond driving unit 13 can be reduced in size. Thus, the length of thehoistway 1 in the height direction thereof can be shortened, and the horizontal cross-sectional area of thehoistway 1 can be reduced. Accordingly, the entire elevator apparatus can be reduced in size. The degree of enlargement of the elevator apparatus resulting from an increase in the capacity thereof can also be reduced. - The return pulleys 31 to 34 for guiding the first
main ropes 19 and the secondmain ropes 20 to the sash pulleys 25 to 30 respectively are provided in the upper portion of thehoistway 1. Therefore, the firstmain ropes 19 and the secondmain ropes 20, which extend substantially horizontally, can be turned to extend substantially vertically, so the firstmain ropes 19 and the secondmain ropes 20 can be guided from thefirst drive sheave 15 and thesecond drive sheave 17 to the return pulleys 31 to 34 respectively without interfering with thecar 2 or thecounterweight 3. - The
first turning sheave 35, around which those portions of the firstmain ropes 19 which are located between thefirst drive sheave 15 and the first car side returnpulley 31 are wound, is disposed in the upper portion of thehoistway 1. Therefore, winding angles of the firstmain ropes 19 with respect to thefirst drive sheave 15 and thefirst turning sheave 35 can be ensured, so an increase in traction ability can be achieved. Thus, a driving force of thefirst driving unit 12 can be transmitted to the firstmain ropes 19 more reliably, so thecar 2 and thecounterweight 3 can be raised/lowered more reliably. - The
second turning sheave 36, around which those portions of the secondmain ropes 20 which are located between thesecond drive sheave 17 and the second car side returnpulley 33 are wound, is disposed in the upper portion within thehoistway 1. Therefore, winding angles of the secondmain ropes 20 with respect to thesecond drive sheave 17 and thesecond turning sheave 36 can be ensured, so an increase in traction ability can be achieved. Thus, a driving force of thesecond driving unit 13 can be transmitted to the secondmain ropes 20 more reliably, so thecar 2 and thecounterweight 3 can be raised/lowered more reliably. - The
first driving unit 12 and thesecond driving unit 13 are disposed within the region of thecar 2 on the vertical projection plane of thehoistway 1. Therefore, the horizontal cross-sectional area of thehoistway 1 can further be reduced, so the entire elevator apparatus can further be reduced in size. - Although those portions of the first
main ropes 19 which are located between thefirst drive sheave 15 and the first car side returnpulley 31 are wrapped around thefirst turning sheave 35 in the foregoing example, those portions of the firstmain ropes 19 which are located between thefirst drive sheave 15 and the first counterweight side returnpulley 32 may be wrapped around thefirst turning sheave 35. In this manner as well, winding angles of the firstmain ropes 19 with respect to thefirst drive sheave 15 and thefirst turning sheave 35 can be ensured, so an increase in traction ability can be achieved. - Although those portions of the
secondmain ropes 20 which are located between thesecond drive sheave 17 and the second car side returnpulley 33 are wrapped around thesecond turning sheave 36 in the foregoing example, those portions of the secondmain ropes 20 which are located between thesecond drive sheave 17 and the second counterweight side returnpulley 34 may be wrapped around thesecond turning sheave 36. In this manner as well, winding angles of the secondmain ropes 20 with respect to thesecond drive sheave 17 and thesecond turning sheave 36 can be ensured, so an increase in traction ability can be achieved. -
Fig. 3 is a plan view showing an elevator apparatus according toEmbodiment 2 of the present invention.Fig. 4 is a front view showing the elevator apparatus ofFig. 3 . Referring toFigs. 3 and4 , the dimension of thecar 2 in the width direction thereof is smaller than the dimension of thecar 2 in the depth direction thereof. Thefirst driving unit 12 and thesecond driving unit 13 are disposed apart from each other in the depth direction of thehoistway 1. Furthermore, those portions of the firstmain ropes 19 which are located between thefirst drive sheave 15 and the first counterweight side returnpulley 32 are wrapped around thefirst turning sheave 35. Still further, those portions of the secondmain ropes 20 which are located between thesecond drive sheave 17 and the second counterweight side returnpulley 34 are wrapped around thesecond turning sheave 36.Embodiment 2 of the present invention is identical toEmbodiment 1 of the present invention in other constructional details. - As described above, even in the elevator apparatus that is structured such that the dimension of the
car 2 in the depth direction thereof is larger than the dimension of thecar 2 in the width direction thereof and that thecounterweight 3 is disposed behind the region of thecar 2, thefirst driving unit 12 and thesecond driving unit 13 can be disposed within the region of thecar 2 on the vertical projection plane of thehoistway 1. As a result, the horizontal cross-sectional area of thehoistway 1 can be reduced. - Although those portions of the first
main ropes 19 which are located between thefirst drive sheave 15 and the first counterweight side returnpulley 32 are wrapped around thefirst turning sheave 35 in the foregoing example, those portions of the firstmain ropes 19 which are located between thefirst drive sheave 15 and the first car side returnpulley 31 may be wrapped around thefirst turning sheave 35. - Although those portions of the second
main ropes 20 which are located between thesecond drive sheave 17 and the second counterweight side returnpulley 34 are wrapped around thesecond turning sheave 36 in the foregoing example, those portions of the secondmain ropes 20 which are located between thesecond drive sheave 17 and the second car side returnpulley 33 may be wrapped around thesecond turning sheave 36. -
Fig. 5 is a plan view showing an elevator apparatus according toEmbodiment 3 of the present invention.Fig. 6 is a front view showing the elevator apparatus ofFig. 5 . Referring toFigs. 5 and6 , the dimension of thecar 2 in the width direction thereof is larger than the dimension of thecar 2 in the depth direction thereof. Thecounterweight 3 is opposed to the secondlateral face portion 2b on the vertical projection plane of thehoistway 1. In other words, thecounterweight 3 is disposed beside the region of thecar 2 with respect to the width direction of thecar 2 when thehoistway 1 is vertically projected. Furthermore, thefirst driving unit 12 and thesecond driving unit 13 are disposed offset from each other in the width direction of thehoistway 1 and the depth direction thereof. - The second car
side cleat portion 22 is disposed above the secondcar sash pulley 28. Thethird end 20a of each of thesecondmain ropes 20 is connected to the second carside cleat portion 22. The second car side returnpulley 33 is disposed above the secondcar sash pulley 27. Each of the secondmain ropes 20, which extends from thethird end 20a to thefourth end 20b, is sequentially wrapped around the secondcar sash pulley 28, the secondcar sash pulley 27, the second car side returnpulley 33, thesecond turning sheave 36, thesecond drive sheave 17, the second counterweight side returnpulley 34, and the secondcounterweight sash pulley 30.Embodiment 3 of the present invention is identical toEmbodiment 1 of the present invention in other constructional details. - As described above, even in the elevator apparatus that is structured such that the dimension of the
car 2 in the width direction thereof is larger than the dimension of thecar 2 in the depth direction thereof and that thecounterweight 3 is disposed beside the region of thecar 2 in the width direction thereof, thefirst driving unit 12 and thesecond driving unit 13 can be disposed within the region of thecar 2 on the vertical projection plane of thehoistway 1. As a result, the horizontal cross-sectional area of thehoistway 1 can be reduced. -
Fig. 7 is a plan view showing an elevator apparatus according toEmbodiment 4 of the present invention.Fig. 8 is a front view showing the elevator apparatus ofFig. 7 . Referring toFigs. 7 and8 , the dimension of thecar 2 in the width direction thereof is smaller than the dimension of thecar 2 in the depth direction thereof. Thefirst driving unit 12 and thesecond driving unit 13 are disposed apart from each other in the depth direction of thehoistway 1.Embodiment 4 of the present invention is identical toEmbodiment 3 of the present invention in other constructional details. - As described above, even in the elevator apparatus that is structured such that the dimension of the
car 2 in the depth direction thereof is larger than the dimension of thecar 2 in the width direction thereof and that thecounterweight 3 is disposed beside the region of thecar 2 in the width direction thereof, thefirst driving unit 12 and thesecond driving unit 13 can be disposed within the region of thecar 2 on the vertical projection plane of thehoistway 1. As a result, the horizontal cross-sectional area of thehoistway 1 can be reduced. - Although those portions of the first
main ropes 19 which are located between thefirst drive sheave 15 and the first car side returnpulley 31 are wrapped around thefirst turning sheave 35 in the foregoing Embodiments 3 and 4 of the present invention, those portions of the firstmain ropes 19 which are located between thefirst drive sheave 15 and the first counterweight side returnpulley 32 may be wrapped around thefirst turning sheave 35. - Although those portions of the
secondmain ropes 20 which are located between thesecond drive sheave 17 and the second car side returnpulley 33 are wrapped around thesecond turning sheave 36 in the foregoing Embodiments 3 and 4 of the present invention, those portions of the secondmain ropes 20 which are located between thesecond drive sheave 17 and the second counterweight side returnpulley 34 may be wrapped around thesecond turning sheave 36. - In the foregoing respective embodiments of the present invention, the
first turning sheave 35 may be dispensed with as long as the winding angle of the firstmain ropes 19 with respect to thefirst drive sheave 15 can be ensured. In addition, thesecond turning sheave 36 may be dispensed with as long as the winding angle of the secondmain ropes 20 with respect to thesecond drive sheave 17 can be ensured. - Although the
first driving unit 12 and thesecond driving unit 13 are installed such that thefirst drive sheave 15 and thesecond drive sheave 17 are disposed above the firstdriving unit body 14 and the seconddriving unit body 16 respectively in the foregoing respective embodiments of the present invention, thefirst driving unit 12 and thesecond driving unit 13 may be installed such that thefirst drive sheave 15 and thesecond drive sheave 17 are disposed below the firstdriving unit body 14 and the seconddriving unit body 16, respectively. - Although the
car 2 and thecounterweight 3 are raised/lowered within thehoistway 1 by the driving forces of the two drivingunits car 2 and thecounterweight 3 are provided respectively with car sash pulleys and counterweight sash pulleys, which correspond to the respective driving units, and the upper portion of thehoistway 1 is provided respectively with car side return pulleys, counterweight side return pulleys, and turning sheaves, which correspond to the respective driving units. Thecar 2 and thecounterweight 3 are suspended within thehoistway 1 by means of a main rope body having main ropes that are equal in number to the driving units.
Claims (4)
- An elevator apparatus characterized in that the elevator apparatus comprises:a first driving unit (12) including a first drive sheave (15) and disposed in an upper portion of a hoistway (1) so that a rotary shaft of the first drive sheave (15) is perpendicular to a horizontal plane;a second driving unit (13) including a second drive sheave (17) and disposed in the upper portion of the hoistway (1) so that a rotary shaft of the second drive sheave (17) is perpendicular to the horizontal plane;a car (2) for being raised/lowered within the hoistway (1) by driving forces of the first driving unit (12) and the second driving unit (13);a counterweight (3) for being raised/lowered within the hoistway (1) by driving forces of the first driving unit (12) and the second driving unit (13);a main rope body (18), for suspending the car (2) and the counterweight (3) within the hoistway (1), including:a first main rope (19) wrapped around the first drive sheave (15) and including a first end (19a) and a second end (19b) that are connected to the upper portion of the hoistway (1); anda second main rope (20) wrapped around the second drive sheave (17) and including a third end (20a) and a fourth end (20b) that are connected to the upper portion of the hoistway (1);a first car sash pulley (25,26) mounted to the car (2) and having wrapped therearound a portion of the first main rope (19) between the first drive sheave (15) and the first end (19a);a second car sash pulley (27,28) mounted to the car (2) and having wrapped therearound a portion of the second main rope (20) between the second drive sheave (17) and the third end (20a);a first counterweight sash pulley (29) mounted to the counterweight (3) and having wrapped therearound a portion of the first main rope (19) between the first drive sheave (15) and the second end (19b); anda second counterweight sash pulley (30) mounted to the counterweight (3) and having wrapped therearound a portion of the second main rope (20) between the second drive sheave (17) and the fourth end (20b).
- The elevator apparatus according to Claim 1, characterized in that the elevator apparatus further comprises:a first car side return pulley (31) disposed in the upper portion of the hoistway (1), for guiding the first main rope (19) from the first drive sheave (15) to the first car sash pulley (25);a first counterweight side return pulley (32) disposed in the upper portion of the hoistway (1), for guiding the first main rope (19) from the first drive sheave (15) to the first counterweight sash pulley (29);a second car side return pulley (33) disposed in the upper portion of the hoistway (1), for guiding the second main rope (20) from the second drive sheave (17) to the second car sash pulley (28); anda second counterweight side return pulley (34) disposed in the upper portion of the hoistway (1), for guiding the second main rope (20) from the second drive sheave (17) to the second counterweight sash pulley (30).
- The elevator apparatus according to Claim 2, characterized in that the elevator apparatus further comprises:a first turning sheave (35) disposed in the upper portion of the hoistway (1) and having wrapped therearound at least one of a portion of the first main rope (19) between the first drive sheave (15) and the first car side return pulley (31), and a portion of the first main rope (19) between the first drive sheave (15) and the first counterweight sash pulley (32); anda second turning sheave (36) disposed in the upper portion of the hoistway (1) and having wrapped therearound at least one of a portion of the second main rope (20) between the second drive sheave (17) and the second car side return pulley (33), and a portion of the second main rope (20) between the second drive sheave (17) and the second counterweight sash pulley (34).
- The elevator apparatus according to any one of Claims 1 to 3, characterized in that the first driving unit (12) and the second driving unit (13) are disposed within a region of the car (2) on a vertical projection plane of the hoistway (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/014349 WO2006038256A1 (en) | 2004-09-30 | 2004-09-30 | Elevator apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1795484A1 EP1795484A1 (en) | 2007-06-13 |
EP1795484A4 EP1795484A4 (en) | 2012-01-18 |
EP1795484B1 true EP1795484B1 (en) | 2014-04-02 |
Family
ID=36142347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04788377.2A Expired - Fee Related EP1795484B1 (en) | 2004-09-30 | 2004-09-30 | Elevator apparatus |
Country Status (4)
Country | Link |
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EP (1) | EP1795484B1 (en) |
JP (1) | JP4757803B2 (en) |
CN (1) | CN100528728C (en) |
WO (1) | WO2006038256A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101356112A (en) * | 2006-06-01 | 2009-01-28 | 三菱电机株式会社 | Elevator apparatus |
CN101622186B (en) * | 2007-06-01 | 2011-06-22 | 三菱电机株式会社 | Elevator device |
FI20070562L (en) * | 2007-07-20 | 2009-01-21 | Kone Corp | Elevator |
CN105883536B (en) * | 2014-12-02 | 2018-07-31 | 广东格菱电梯有限公司 | A kind of emergency staircase |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4191331B2 (en) * | 1999-01-08 | 2008-12-03 | 三菱電機株式会社 | Elevator equipment |
JP4786121B2 (en) * | 2000-10-10 | 2011-10-05 | 三菱電機株式会社 | Elevator equipment |
JP4771586B2 (en) * | 2000-12-08 | 2011-09-14 | 東芝エレベータ株式会社 | elevator |
JP2002326778A (en) * | 2001-03-02 | 2002-11-12 | Shin Meiwa Ind Co Ltd | Elevator and multistory parking facility |
CA2465031C (en) * | 2001-11-23 | 2011-05-10 | Inventio Ag | Lift with belt-like transmission means, particularly with wedge-ribbed belt, as support means and/or drive means |
CN1220618C (en) * | 2002-06-10 | 2005-09-28 | 三菱电机株式会社 | Elevator |
-
2004
- 2004-09-30 CN CNB2004800418074A patent/CN100528728C/en not_active Expired - Fee Related
- 2004-09-30 EP EP04788377.2A patent/EP1795484B1/en not_active Expired - Fee Related
- 2004-09-30 JP JP2006539087A patent/JP4757803B2/en not_active Expired - Fee Related
- 2004-09-30 WO PCT/JP2004/014349 patent/WO2006038256A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN100528728C (en) | 2009-08-19 |
JP4757803B2 (en) | 2011-08-24 |
WO2006038256A1 (en) | 2006-04-13 |
EP1795484A1 (en) | 2007-06-13 |
JPWO2006038256A1 (en) | 2008-05-15 |
EP1795484A4 (en) | 2012-01-18 |
CN1918063A (en) | 2007-02-21 |
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