EP1862420B1 - Elevator apparatus - Google Patents
Elevator apparatus Download PDFInfo
- Publication number
- EP1862420B1 EP1862420B1 EP05720031.3A EP05720031A EP1862420B1 EP 1862420 B1 EP1862420 B1 EP 1862420B1 EP 05720031 A EP05720031 A EP 05720031A EP 1862420 B1 EP1862420 B1 EP 1862420B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- counterweight
- car
- rope
- connecting portion
- 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
- 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
- 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
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
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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
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
Description
- The present invention relates to an elevator apparatus having a drive device disposed in an upper portion within a hoistway.
- In a conventional elevator apparatus, there is often adopted a 2:1 roping method as to a main rope for suspending a car and a counterweight, with a view to reducing size of a drive device. In the conventional elevator apparatus thus constructed, the car and the counterweight are provided with a car suspending pulley and a counterweight suspending pulley respectively. The main rope is wound around the car suspending pulley, the counterweight suspending pulley, and a driving sheave of the drive device. The main rope is connected at one end thereof and the other end thereof to an upper portion of a hoistway. Thus, the axial load applied to the drive device is reduced, so the drive device can be reduced in size (see Patent Document 1).
WO 03 074 409 claims - Patent Document 1:
JP 10-139321 A - However, the rotational speed of the driving sheave is higher when the 2:1 roping method is adopted as to the main rope than when a 1:1 roping method is adopted, so a loud noise is made.
- The present invention has been made to solve the above-mentioned problem, and it is therefore an object of the present invention to obtain an elevator apparatus which makes it possible to reduce the axial load applied to a drive device and abate noise.
- An elevator apparatus according to the present invention includes: a drive device having a drive device body and a driving sheave rotated around a vertically extending rotational shaft by the drive device body, and disposed in an upper portion within a hoistway; a car for being raised/lowered within the hoistway due to a driving force of the drive device; a counterweight provided with a first counterweight rope connecting portion and a second counterweight rope connecting portion, for being raised/lowered within the hoistway due to a driving force of the drive device; a car suspending pulley provided on the car; a first car side return pulley and a second car side return pulley that are disposed in the upper portion within the hoistway and above the car; a first counterweight side return pulley and a second counterweight side return pulley that are disposed in the upper portion within the hoistway and above the counterweight; and a main rope having a first rope end connected to the first counterweight rope connecting portion and a second rope end connected to the second counterweight rope connecting portion, and sequentially wound around the first counterweight side return pulley, the driving sheave, the first car side return pulley, the car suspending pulley, the second car side return pulley, and the second counterweight side return pulley while extending from the first rope end to the second rope end, for suspending the car and the counterweight within the hoistway.
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Fig. 1 is a lateral view showing an elevator apparatus according toEmbodiment 1 of the present invention. -
Fig. 2 is a plan view showing the elevator apparatus ofFig. 1 . -
Fig. 3 is a plan view showing another example of the elevator apparatus according toEmbodiment 1 of the present invention. -
Fig. 4 is a lateral view showing an elevator apparatus according toEmbodiment 2 of the present invention. -
Fig. 5 is a lateral view showing an elevator apparatus according toEmbodiment 3 of the present invention. - Preferred embodiments of the present invention will be described hereinafter with reference to the drawings.
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Fig. 1 is a lateral view showing an elevator apparatus according toEmbodiment 1 of the present invention.Fig. 2 is a plan view showing the elevator apparatus ofFig. 1 . Referring toFigs. 1 and2 , a pair of vertically extendingcar guide rails 2 and a pair of vertically extendingcounterweight guide rails 3 are installed within a hoistway 1 (Fig. 2 ). The respectivecar guide rails 2 and the respectivecounterweight guide rails 3 are disposed within thehoistway 1 such that a line connecting the respectivecar guide rails 2 to each other extends perpendicularly to a line connecting the respectivecounterweight guide rails 3 to each other when thehoistway 1 is vertically projected. - A
car 4 is disposed between the respectivecar guide rails 2. Acounterweight 5 is disposed between the respectivecounterweight guide rails 3. Thecar 4 is guided by the respectivecar guide rails 2 to be raised/lowered within thehoistway 1. Thecounterweight 5 is guided by the respectivecounterweight guide rails 3 to be raised/lowered within thehoistway 1. Thecar 4 and thecounterweight 5 are disposed side by side in a width direction of the hoistway 1 (a direction extending along the line connecting the respectivecar guide rails 2 to each other) on a vertical projection plane of thehoistway 1. In other words, thecounterweight 5 is disposed beside thecar 4. - A
drive device 6 for generating a driving force for raising/lowering thecar 4 and thecounterweight 5 is provided horizontally in an upper portion within thehoistway 1. Thedrive device 6 is disposed within a region of thecar 4 on the vertical projection plane of thehoistway 1. Thedrive device 6 has adrive device body 7, and a drivingsheave 8 which is rotated around a vertically extending rotational shaft by thedrive device body 7. In addition, thedrive device 6 is designed as a low-profile hoisting machine having a dimension in an axial direction (a direction extending along the rotational shaft of the driving sheave 8) which is smaller than a dimension in a radial direction (a direction extending perpendicularly to the axial direction). In this example, thedrive device 6 is disposed such that the drivingsheave 8 is located above thedrive device body 7. - A pair of
car suspending pulleys car 4 on both sides thereof respectively. The respectivecar suspending pulleys car guide rails 2 to each other on the vertical projection plane of the hoistway 1 (Fig. 2 ). - A first car
side return pulley 11 and a second carside return pulley 12 are provided in the upper portion within thehoistway 1 and above thecar 4. Each of the first carside return pulley 11 and the second carside return pulley 12 is rotated around a horizontally extending rotational shaft. The first carside return pulley 11 is disposed above one of thecar suspending pulleys 9. The second carside return pulley 12 is disposed above the othercar suspending pulley 10. - A first counterweight
rope connecting portion 13 and a second counterweightrope connecting portion 14, which are disposed side by side in a width direction of thecounterweight 5, are provided on an upper portion of thecounterweight 5. The first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 are disposed on the line connecting the respectivecounterweight guide rails 3 to each other on the vertical projection plane of the hoistway 1 (Fig. 2 ). Further, the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 are disposed symmetrically with respect to a vertical line extending past a center of gravity of thecounterweight 5. - A first counterweight
side return pulley 15 and a second counterweightside return pulley 16 are provided in the upper portion within thehoistway 1 and above thecounterweight 5. Each of the first counterweightside return pulley 15 and the second counterweightside return pulley 16 is rotated around a horizontally extending rotational shaft. The first counterweightside return pulley 15 is disposed above the first counterweightrope connecting portion 13. The second counterweightside return pulley 16 is disposed above the second counterweightrope connecting portion 14. - The
car 4 and thecounterweight 5 are suspended within thehoistway 1 by a plurality of main ropes 17 (only one rope is illustrated in the drawings for the sake of simplicity). Each of themain ropes 17 has afirst rope end 17a connected to the first counterweightrope connecting portion 13, and asecond rope end 17b connected to the second counterweightrope connecting portion 14. Each of themain ropes 17, which extends from thefirst rope end 17a to thesecond rope end 17b, is sequentially wound around the first counterweightside return pulley 15, the drivingsheave 8, the first carside return pulley 11, the one of thecar suspending pulleys 9, the othercar suspending pulley 10, the second carside return pulley 12, and the second counterweightside return pulley 16. That is, as for the respectivemain ropes 17, there is adopted a 1:1 roping method in which the moving distance of each of themain ropes 17 is equal to the moving distance of thecar 4 and thecounterweight 5. - Each of the
main ropes 17 is manufactured by twisting a plurality of copper wires. Each of these wires has a wire diameter smaller than a normal wire diameter. Thus, the respectivemain ropes 17 are increased in flexibility. The respectivemain ropes 17 may also be designed as synthetic fiber ropes to achieve further enhancement of flexibility. - Next, an operation will be described. When the driving
sheave 8 is rotated by thedrive device body 7, the respectivemain ropes 17 are moved in accordance with rotation of the drivingsheave 8 . Thus, thecar 4 and thecounterweight 5 are raised/lowered within thehoistway 1 while being guided by the respectivecar guide rails 2 and the respectivecounterweight guide rails 3 respectively. - Next, an axial load applied to the driving
sheave 8 will be described. Thecar 4 and thecounterweight 5 are suspended by themain ropes 17. Therefore, a first rope tension T1 is applied to portions of themain ropes 17 which are located on thefirst rope end 17a side with respect to the drivingsheave 8, and a second rope tension T2 is applied to portions of themain ropes 17 which are located on thesecond rope end 17b side with respect to the drivingsheave 8. -
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- That is, the axial load MT is equal to the weight W1 of the
counterweight 5. - A total weight W2 on the
car 4 side (i.e. , an added weight of a car weight Wa of thecar 4 itself and a laden weight Wb of an onboard object within the car 4) is balanced with the sum of the second rope tension T2 on the one of thecar suspending pulleys 9 side and the second rope tension T2 on the othercar suspending pulley 10 side. Therefore, the second rope tension T2 is expressed by the following equation. -
- In this example, the total weight W2 on the
car 4 side is balanced with the weight W1 of thecounterweight 5 when the laden weight Wb is half of a maximum laden weight Wbmax. - As is apparent from the equations (3) and (4), the magnitudes of the first rope tension T1 and the second rope tension T2 may be different from each other. Accordingly, the larger the clearance between the first counterweight
rope connecting portion 13 and the second counterweightrope connecting portion 14 becomes, the larger the offset load applied to thecounterweight 5 becomes, and the larger the reactive force applied to each of thecounterweight guide rails 3 becomes. Thus, when there is a certain clearance between the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14, the level of a noise resulting from contact of thecounterweight 5 with the respectivecounterweight guide rails 3 may be increased, or the life of thecounterweight guide rails 3 may be shortened due to abrasion. - Accordingly, the clearance between the first counterweight
rope connecting portion 13 and the second counterweightrope connecting portion 14 is set within a predetermined range where an adverse effect resulting from an offset load applied to thecounterweight 5, for example, a noise, abrasion of thecounterweight guide rails 3, or the like can be permitted. In this example, the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 are disposed on thecounterweight 5 in close proximity to the vertical line extending past the center of gravity of thecounterweight 5. - In the elevator apparatus constructed as described above, the
drive device 6 is horizontally provided in the upper portion within thehoistway 1, and each of themain ropes 17 for suspending thecar 4 and thecounterweight 5 within thehoistway 1, which extends from thefirst rope end 17a connected to thecounterweight 5 to thesecond rope end 17b connected to thecounterweight 5, is sequentially wound around the first counterweight side returnpulley 15, the drivingsheave 8 of thedrive device 6, the first car side returnpulley 11, the one of thecar suspending pulleys 9, the othercar suspending pulley 10, the second car side returnpulley 12, and the second counterweight side returnpulley 16. Therefore, the axial load applied to the drivingsheave 8 can be made equal to the weight of thecounterweight 5, and the moving distance of themain ropes 17 can be made directly equal to the moving distance of thecar 4 and thecounterweight 5. That is, both the total weight W2 on thecar 4 side and the weight W1 of thecounterweight 5 can be prevented from being directly applied to the drivingsheave 8, and the 1:1 roping method is adopted as to themain ropes 17, so the rotational speed of the drivingsheave 8 can be reduced. Accordingly, thedrive device 6 can be reduced in size, and the space of thehoistway 1 can be reduced. Further, a noise resulting from rotation of the drivingsheave 8 can also be abated. - The respective
car suspending pulleys car guide rails 2 to each other on the vertical projection plane of thehoistway 1. Therefore, thecar 4 can be stably suspended by themain ropes 17. - The first counterweight
rope connecting portion 13 and the second counterweightrope connecting portion 14 are disposed symmetrically with respect to the vertical line extending past the center of gravity of thecounterweight 5, and the clearance between the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 is set within the predetermined range. Therefore, the magnitude of an offset load applied to thecounterweight 5 can be set within a permissible range. Thus, a noise resulting from, for example, contact of thecounterweight 5 on thecounterweight guide rails 3 can be abated, and the life of thecounterweight guide rails 3 can be restrained from being shortened due to abrasion. - The
drive device 6 is designed as a low-profile hoisting machine having a dimension in an axial direction which is smaller than a dimension in a radial direction, so the dimension of thehoistway 1 in a height direction thereof can further be reduced. - In the foregoing example, the
car suspending pulleys car 4. However, thecar suspending pulleys car 4. In this manner as well, thecar 4 can be suspended within thehoistway 1 by themain ropes 17. - In the foregoing example, the present invention is applied to an elevator apparatus of a counter weight-falling-sidewise type in which the
counterweight 5 is disposed beside thecar 4. However, as shown inFig. 3 , the present invention may also be applied to an elevator apparatus of counterweight-falling-behind type in which thecounterweight 5 is disposed behind thecar 4. In this case, the line connecting the respectivecar guide rails 2 to each other is parallel to the line connecting the respectivecounterweight guide rails 3 to each other on the vertical projection plane of thehoistway 1. -
Fig. 4 is a lateral view showing an elevator apparatus according toEmbodiment 2 of the present invention. Referring toFig. 4 , a first carrope connecting portion 21 and a second carrope connecting portion 22 are provided on the lower portion of thecar 4 on both sides thereof. The first carrope connecting portion 21 and the second carrope connecting portion 22 are disposed symmetrically with respect to the line segment connecting the respectivecar guide rails 2 to each other on the vertical projection plane of thehoistway 1. The first car side returnpulley 11 is disposed above the first carrope connecting portion 21. The second car side returnpulley 12 is disposed above the second carrope connecting portion 22. - A
counterweight suspending pulley 23 is provided on the upper portion of thecounterweight 5. The first counterweight side returnpulley 15 and the second counterweight side returnpulley 16 are disposed above thecounterweight suspending pulley 23. - The
car 4 and thecounterweight 5 are suspended within thehoistway 1 by the respectivemain ropes 17. Each of themain ropes 17 has thefirst rope end 17a connected to the first carrope connecting portion 21, and thesecond rope end 17b connected to the second carrope connecting portion 22. Each of themain ropes 17, which extends from thefirst rope end 17a to thesecond rope end 17b, is sequentially wound around the first car side returnpulley 11, the drivingsheave 8, the first counterweight side returnpulley 15, thecounterweight suspending pulley 23, the second counterweight side returnpulley 16, and the second car side returnpulley 12.Embodiment 2 of the present invention is identical toEmbodiment 1 of the present invention in other constructional details and other operational details. - Next, the axial load applied to the driving
sheave 8 will be described. A first rope tension T3 is applied to portions of themain ropes 17 which are located on thefirst rope end 17b side with respect to the drivingsheave 8, and a second rope tension T4 is applied to portions of themain ropes 17 which are located on thesecond rope end 17a side with respect to the drivingsheave 8. -
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- That is, the axial load MT is equal to the total weight W2 on the
car 4 side. -
- As described above, the first car
rope connecting portion 21 and the second carrope connecting portion 22 are provided on thecar 4, and thecounterweight suspending pulley 23 is provided on thecounterweight 5, and each of themain ropes 17 for suspending thecar 4 and thecounterweight 5, which extends from thefirst rope end 17a connected to the first carrope connecting portion 21 to thesecond rope end 17b connected to the second carrope connecting portion 22, is sequentially wound around the first car side returnpulley 11, the drivingsheave 8, the first counterweight side returnpulley 15, thecounterweight suspending pulley 23, the second counterweight side returnpulley 16, and the second car side returnpulley 12. Therefore, as is the case withEmbodiment 1 of the present invention, both the total weight W2 on thecar 4 side and the weight W1 of thecounterweight 5 can be prevented from being directly applied to the drivingsheave 8, and the 1:1 roping method is adopted as to themain ropes 17, so the rotational speed of the drivingsheave 8 can be lowered. Thus, the axial load applied to thedrive device 6 can be reduced, and a noise can be abated. - The first
rope connecting portion 21 and the secondrope connecting portion 22 are disposed symmetrically with respect to the center point of the line segment connecting the respectivecar guide rails 2 to each other on the vertical projection plane of thehoistway 1. Therefore, thecar 4 can be stably suspended by themain ropes 17. -
Fig. 5 is a lateral view showing an elevator apparatus according toEmbodiment 3 of the present invention. Referring toFig. 5 , the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14, which are disposed side by side in the width direction of thecounterweight 5, are provided on the upper portion of thecounterweight 5. Thecar 4 and thecounterweight 5 are suspended within thehoistway 1 by amain rope body 31 having a firstmain rope 32 and a secondmain rope 33. - The first
main rope 32 has afirst rope end 32a connected to the first carrope connecting portion 21, and asecond rope end 32b connected to the first counterweightrope connecting portion 13. The firstmain rope 32, which extends from thefirst rope end 32a to thesecond rope end 32b, is sequentially wound around the first car side returnpulley 11, the drivingsheave 8, and the first counterweight side returnpulley 15. - The second
main rope 33 has athird rope end 33a connected to the second carrope connecting portion 22, and afourth rope end 33b connected to the second counterweightrope connecting portion 14. The secondmain rope 33, which extends from thethird rope end 33a to thefourth rope end 33b, is sequentially wound around the second car side returnpulley 12 and the second counterweight side returnpulley 16. That is, the secondmain rope 33 is wound around the second car side returnpulley 12 and the second counterweight side returnpulley 16 while bypassing the drivingsheave 8.Embodiment 3 of the present invention is identical toEmbodiment 2 of the present invention in other constructional details. - The
main rope body 31 suspends thecar 4 and thecounterweight 5 such that the sum of the weight W1 of thecounterweight 5 and the total weight W2 on thecar 4 side is distributed to the firstmain rope 32 and the secondmain rope 33. The axial load applied to the drivingsheave 8 results only from a tension in the firstmain rope 32. That is, the axial load applied to the drivingsheave 8 is equal to that part of the sum of the weight W1 of thecounterweight 5 and the total weight W2 on thecar 4 side which is borne by the firstmain rope 32. - As described above, the first car
rope connecting portion 21 and the second carrope connecting portion 22 are provided on thecar 4, and the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 are provided on thecounterweight 5. Also, themain rope body 31 for suspending thecar 4 and thecounterweight 5 has the firstmain rope 32, which is wound around the drivingsheave 8 and connected to the first carrope connecting portion 21 and the first counterweightrope connecting portion 13, and the secondmain rope 33, which is connected to the second carrope connecting portion 22 and the second counterweightrope connecting portion 14 while bypassing the drivingsheave 8. Therefore, thecar 4 and thecounterweight 5 can be suspended by the firstmain rope 32 and the secondmain rope 33 in a distributed manner, so both the total weight W2 on thecar 4 side and the weight W1 of thecounterweight 5 can be prevented from being directly applied to the drivingsheave 8. The 1:1 roping method is adopted as to themain ropes 17, so the rotational speed of the drivingsheave 8 can be reduced. Thus, the axial load applied to thedrive device 6 can be reduced, and a noise can be abated. - In
Embodiments counterweight 5 is disposed beside thecar 4. However, the present invention is also applicable to an elevator apparatus of counterweight-falling-behind type in which thecounterweight 5 is disposed behind thecar 4. - In
Embodiments rope connecting portion 13 and the second counterweightrope connecting portion 14 are disposed side by side in the width direction of thecounterweight 5. However, the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 may be disposed side by side in a thickness direction of thecounterweight 5. In this case, the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 are disposed symmetrically with respect to the vertical line extending past the center of gravity of thecounterweight 5. The clearance between the first counterweightrope connecting portion 13 and the second counterweightrope connecting portion 14 is set within a predetermined range. In this manner as well, the magnitude of an offset load applied to thecounterweight 5 can be confined within a permissible range. - In
Embodiments rope connecting portion 13 and the second counterweightrope connecting portion 14 are disposed side by side in the width direction of thecounterweight 5. However, it is also appropriate that a plurality of (an even number of) first counterweightrope connecting portions 13 are disposed symmetrically with respect to the vertical line extending past the center of gravity of thecounterweight 5, and that a plurality of (an even number of) second counterweightrope connecting portions 14 are disposed symmetrically with respect to the vertical line extending past the center of gravity of thecounterweight 5. In this manner, the occurrence of an offset load applied to thecounterweight 5 can be prevented even when the first rope tension T1 and the second rope tension T2 are different in magnitude from each other.
Claims (8)
- An elevator apparatus comprising:a drive device (6) having a drive device body (7) and a driving sheave (8) rotated around a vertically extending rotational shaft by the drive device body (7), and disposed in an upper portion within a hoistway (1);a car (4) for being raised/lowered within the hoistway (1) due to a driving force of the drive device (6);a counterweight (5) for being raised/lowered within the hoistway (1) due to a driving force of the drive device (6);characterized in that the counterweight (5) is provided with a first counterweight rope connecting portion (13) and a second counterweight rope connecting portion (14); andthat the elevator apparatus further comprises:a car suspending pulley (9, 10) provided on the car (4);a first car side return pulley (11) and a second car side return pulley (12) that are disposed in the upper portion within the hoistway (1) and above the car (4);a first counterweight side return pulley (15) and a second counterweight side return pulley (16) that are disposed in the upper portion within the hoistway (1) and above the counterweight (5); anda main rope (17) having a first rope end (17a) connected to the first counterweight rope connecting portion (13) and a second rope end (17b) connected to the second counterweight rope connecting portion (14), and sequentially wound around the first counterweight side return pulley (15), the driving sheave (8), the first car side return pulley (11), the car suspending pulley (9, 10), the second car side return pulley (12), and the second counterweight side return pulley (16) while extending from the first rope end (17a) to the second rope end (17b), for suspending the car (4) and the counterweight (5) within the hoistway (1).
- An elevator apparatus comprising:a drive device (6) having a drive device body (7) and a driving sheave (8) rotated around a vertically extending rotational shaft by the drive device body (7), and disposed in an upper portion within a hoistway (1);a car (4) for being raised/lowered within the hoistway (1) due to a driving force of the drive device (6);a counterweight (5) for being raised/lowered within the hoistway (1) due to a driving force of the drive device (6);characterized in that:the car (4) is provided with a first car rope connecting portion (21) and a second car rope connecting portion (22); andthat the elevator apparatus further comprises:a counterweight suspending pulley (23) provided on the counterweight (5);a first car side return pulley (11) and a second car side return pulley (12) that are disposed in the upper portion within the hoistway (1) and above the car (4);a first counterweight side return pulley (15) and a second counterweight side return pulley (16) that are disposed in the upper portion within the hoistway (1) and above the counterweight (5); anda main rope (17) having a first rope end (17a) connected to the first car rope connecting portion (21) and a second rope end (17b) connected to the second car rope connecting portion (22), and sequentially wound around the first car side return pulley (11), the driving sheave (8), the first counterweight side return pulley (15), the counterweight suspending pulley (23), the second counterweight side return pulley (16), and the second car side return pulley (12) while extending from the first rope end (17a) to the second rope end (17b), for suspending the car (4) and the counterweight (5) within the hoistway (1).
- An elevator apparatus comprising:a drive device (6) having a drive device body (7) and a driving sheave (8) rotated around a vertically extending rotational shaft by the drive device body (7), and disposed in an upper portion within a hoistway (1);a car (4) for being raised/lowered within the hoistway (1) due to a driving force of the drive device (6);a counterweight (5) for being raised/lowered within the hoistway (1) due to a driving force of the drive device (6);characterized in that:the car (4) is provided with a first car rope connecting portion (21) and a second car rope connecting portion (22);the counterweight (5) is provided with a first counterweight rope connecting portion (13) and a second counterweight rope connecting portion (14); andthat the elevator apparatus further comprises:a first car side return pulley (11) and a second car side return pulley (12) that are disposed in the upper portion within the hoistway (1) and above the car (4);a first counterweight side return pulley (15) and a second counterweight side return pulley (16) that are disposed in the upper portion within the hoistway (1) and above the counterweight (5); anda main rope body (31) having a first main rope (32), which includes a first rope end (32a) connected to the first car rope connecting portion (21) and a second rope end (32b) connected to the first counterweight rope connecting portion (13) and is sequentially wound around the first car side return pulley (11), the driving sheave (8), and the first counterweight side return pulley (15) while extending from the first rope end (32a) to the second rope end (32b), and a second main rope (32), which includes a third rope end (33a) connected to the second car rope connecting portion (22) and a fourth rope end (33b) connected to the second counterweight rope connecting portion (14) and is sequentially wound around the second car side return pulley (12) and the second counterweight side return pulley (16) and bypasses the driving sheave (8) while extending from the third rope end (33a) to the fourth rope end (33b), for suspending the car (4) and the counterweight (5) within the hoistway (1).
- The elevator apparatus according to Claim 1, characterized in that:the hoistway (1) has provided therein a pair of car guide rails (2) for guiding the car (4);the car (4) is provided with a pair of car suspending pulleys (9, 10) as mentioned above; andthe respective car suspending pulleys (9, 10) are disposed symmetrically with respect to a center point of a line segment connecting the respective car guide rails (2) to each other on a vertical projection plane of the hoistway (1).
- The elevator apparatus according to Claim 2 or 3, characterized in that:the hoistway (1) has provided therein a pair of car guide rails (2) for guiding the car (4); andthe first car rope connecting portion (21) and the second car rope connecting portion (22) are disposed symmetrically with respect to a center point of a line segment connecting the respective car guide rails (2) to each other on a vertical projection plane of the hoistway (1).
- The elevator apparatus according to Claim 1 or 3, characterized in that:the first counterweight rope connecting portion (13) and the second counterweight rope connecting portion (14) are disposed symmetrically with respect to a vertical line extending past a center of gravity of the counterweight (5); andthe first counterweight rope connecting portion (13) and the second counterweight rope connecting portion (14) are spaced apart from each other by a clearance that is set within a predetermined range.
- The elevator apparatus according to Claim 1 or 3, characterized in that:the counterweight (5) is provided with an even number of first counterweight rope connecting portions (13) as mentioned above and an even number of second counterweight rope connecting portions (14) as mentioned above; andthe respective first counterweight connecting portions (13) are disposed symmetrically with respect to a vertical line extending past a center of gravity of the counterweight (5); andthe respective second counterweight connecting portions (14) are disposed symmetrically with respect to the vertical line.
- The elevator apparatus according to any one of Claims 1 to 7, characterized in that the drive device (6) is a low-profile hoisting machine having a dimension in an axial direction along the rotational shaft which is smaller than a dimension in a radial direction perpendicular to the rotational shaft.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/003759 WO2006095390A1 (en) | 2005-03-04 | 2005-03-04 | Elevator apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1862420A1 EP1862420A1 (en) | 2007-12-05 |
EP1862420A4 EP1862420A4 (en) | 2012-11-07 |
EP1862420B1 true EP1862420B1 (en) | 2014-06-04 |
Family
ID=36953001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05720031.3A Expired - Fee Related EP1862420B1 (en) | 2005-03-04 | 2005-03-04 | Elevator apparatus |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1862420B1 (en) |
JP (1) | JP4750104B2 (en) |
KR (1) | KR100875778B1 (en) |
CN (1) | CN100542931C (en) |
WO (1) | WO2006095390A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2465805B1 (en) * | 2009-08-11 | 2016-11-23 | Mitsubishi Electric Corporation | Elevator device |
ES2564378T3 (en) * | 2013-08-26 | 2016-03-22 | Kone Corporation | An elevator |
KR101480477B1 (en) | 2013-09-02 | 2015-01-09 | 티센크루프엘리베이터코리아 주식회사 | Sensing separation apparatus for balance weight |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5743513B2 (en) | 1974-05-24 | 1982-09-14 | ||
JPH09216778A (en) * | 1996-02-15 | 1997-08-19 | Mitsubishi Denki Bill Techno Service Kk | Wire rope device for elevator |
JP4191331B2 (en) * | 1999-01-08 | 2008-12-03 | 三菱電機株式会社 | Elevator equipment |
JP2002003128A (en) * | 2000-06-23 | 2002-01-09 | Shin Meiwa Ind Co Ltd | Counterweight type elevator elevating/lowering device |
EP2042462B1 (en) * | 2000-09-12 | 2011-05-18 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
JP4110096B2 (en) * | 2002-03-01 | 2008-07-02 | 三菱電機株式会社 | Elevator equipment |
JP4401069B2 (en) * | 2002-12-06 | 2010-01-20 | 東芝エレベータ株式会社 | Machine roomless elevator |
WO2006040813A1 (en) * | 2004-10-13 | 2006-04-20 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
-
2005
- 2005-03-04 KR KR1020077007096A patent/KR100875778B1/en active IP Right Grant
- 2005-03-04 CN CNB2005800177778A patent/CN100542931C/en not_active Expired - Fee Related
- 2005-03-04 WO PCT/JP2005/003759 patent/WO2006095390A1/en not_active Application Discontinuation
- 2005-03-04 EP EP05720031.3A patent/EP1862420B1/en not_active Expired - Fee Related
- 2005-03-04 JP JP2007506924A patent/JP4750104B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2006095390A1 (en) | 2006-09-14 |
JP4750104B2 (en) | 2011-08-17 |
CN1960934A (en) | 2007-05-09 |
JPWO2006095390A1 (en) | 2008-08-14 |
KR20070088542A (en) | 2007-08-29 |
KR100875778B1 (en) | 2008-12-26 |
EP1862420A4 (en) | 2012-11-07 |
EP1862420A1 (en) | 2007-12-05 |
CN100542931C (en) | 2009-09-23 |
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