EP2022743A1 - Elevator device - Google Patents
Elevator device Download PDFInfo
- Publication number
- EP2022743A1 EP2022743A1 EP06780622A EP06780622A EP2022743A1 EP 2022743 A1 EP2022743 A1 EP 2022743A1 EP 06780622 A EP06780622 A EP 06780622A EP 06780622 A EP06780622 A EP 06780622A EP 2022743 A1 EP2022743 A1 EP 2022743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pulley
- hoistway
- counterweight
- weight
- deflector
- 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.)
- Withdrawn
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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
- B66B11/001—Arrangement of controller, e.g. location
- B66B11/002—Arrangement of controller, e.g. location in the hoistway
- B66B11/003—Arrangement of controller, e.g. location in the hoistway on the counterweight
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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
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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
- B66B11/009—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave with separate traction and suspension ropes
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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
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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
Definitions
- the present invention relates to an elevator apparatus having a main rope for suspending a car and a counterweight, and a drive rope for transmitting a driving force of a drive device to the counterweight to raise/lower the car and the counterweight.
- an elevator apparatus structured to move a drive rope that is different from a main rope for suspending the car and the counterweight.
- a weight-side sheave is mounted on the counterweight, and a plurality of hoistway-side sheaves are disposed in an upper portion of a hoistway and a lower portion of the hoistway.
- the drive rope is looped around the weight-side sheave and the hoistway-side sheaves.
- One end of the drive rope is connected to the upper portion of the hoistway, and a tension weight for applying a tensile force to the drive rope is suspended at the other end of the drive rope.
- Patent Document 1 International Publication 02/094701 ' Pamphlet
- the tension weight applies the tensile force to the drive rope, so a space for disposition of the tension weight is required. Accordingly, the space of the hoistway cannot be saved with ease, so the elevator apparatus is increased in size.
- the present invention has been made to solve the above-mentioned problem, and it is therefore an obj ect of the present invention to provide an elevator apparatus enabling downsizing thereof.
- An elevator apparatus includes: a car and a counterweight that can be raised/lowered within a hoistway; a displacement body provided on the counterweight and displaceable with respect to the counterweight; a main rope connected to the displacement body, for suspending the car and the counterweight; a weight-side fixed pulley provided on the counterweight; a weight-side movable pulley provided on the displacement body and displaced away from the weight-side fixed pulley through displacement of the displacement body with respect to the counterweight resulting from pulling of the displacement body by the main rope; a hoistway-side upper return pulley provided in a upper portion of the hoistway; a hoistway-side lower return pulley provided in a lower portion of the hoistway; a drive rope having one end and the other end that are connected to the counterweight, looped in succession around the hoistway-side upper return pulley, the weight-side fixed pulley, the weight-side movable pulley, and the hoistway-side lower return pull
- Fig. 1 is a lateral view showing an elevator apparatus according to Embodiment 1 of the present invention.
- Fig. 2 is a top view showing the elevator apparatus of Fig. 1 .
- a car 2 and a counterweight 3 are provided within a hoistway 1 in a manner allowing the car 2 and the counterweight 3 to be raised/lowered.
- a pair of main rope return pulleys 4 and 5 are provided in an upper portion of the hoistway 1.
- a plurality of main ropes 6 are looped around the main rope return pulleys 4 and 5. The car 2 and the counterweight 3 are suspended within the hoistway 1 by the main ropes 6.
- the counterweight 3 is provided with a displacement body 7 that is displaceable vertically with respect to the counterweight 3, and a weight-side fixed pulley 8 that is fixed in position with respect to the counterweight 3.
- the displacement body 7 has a turning lever 10 that is turnable around a first horizontal shaft 9 mounted on the counterweight 3, and a main rope connection member 12 that is turnable around a second horizontal shaft 11 mounted at a tip of the turning lever 10 (end of turning lever 10 on the other side of first horizontal shaft 9 side).
- Each of the main ropes 6 is connected at one end thereof to the main rope connection member 12, and at the other end thereof to an upper portion of the car 2. Accordingly, the displacement body 7 receives from each of the main ropes 6 a force serving to displace the displacement body 7 upward with respect to the counterweight 3 (force serving to pull up displacement body 7 with respect to counterweight 3). That is, the displacement body 7 is pulled by the main ropes 6 to be displaced upward with respect to the counterweight 3.
- the displacement body 7 is provided with a weight-side movable pulley 13 that is rotatable around the second horizontal shaft 11.
- the weight-side movable pulley 13 is disposed above the weight-side fixed pulley 8. Accordingly, when the displacement body 7 is pulled by the main ropes 6 to be displaced upward with respect to the counterweight 3, the weight-side movable pulley 13 is thereby displaced away from the weight-side fixed pulley 8.
- a drive device 14 for generating a driving force for raising/lowering the car 2 and the counterweight 3, and a hoistway-side upper return pulley 15 provided on the drive device 14 are provided in the upper portion of the hoistway 1.
- the drive device 14 is disposed above the counterweight 3.
- the drive device 14 is designed as a low-profile hoisting machine with an axial dimension smaller than a radial dimension.
- the hoistway-side upper return pulley 15 is rotated around an upper rotary shaft disposed horizontally, due to the driving force of the drive device 14.
- a hoistway-side lower return pulley 16 is provided in a lower portion of the hoistway 1.
- the hoistway-side lower return pulley 16 is rotatable around a lower rotary shaft disposed horizontally.
- the drive rope 17 is designed as a resin-coated rope having an outer layer coated with resin.
- the drive rope 17 has one end 17a connected to an upper portion of the counterweight 3, and the other end 17b connected to a lower portion of the counterweight 3.
- the displacement body 7 is constantly urged to be pulled up with respect to the counterweight 3 through the suspension of the car 2 and the counterweight 3 by the main ropes 6. Thus; the displacement body 7 is displaced upward with respect to the counterweight 3, and the weight-side movable pulley 13 is displaced away from the weight-side fixed pulley 8. A tensile force is applied to the drive rope 17 through displacement of the weight-side movable pulley 13 away from the weight-side fixed pulley 8. Thus, a frictional force is secured between each of the weight-side fixed pulley 8, the weight-side movable pulley 13, the hoistway-side upper return pulley 15, and the hoistway-side lower return pulley 16 and the drive rope 17.
- the main rope return pulleys 4 and 5, the drive device 14, and the hoistway-side upper return pulley 15 are supported by a support pedestal 18 fixed to the upper portion of the hoistway 1.
- the drive device 14 is designed as a low-profile hoisting machine, so the space for installation of the drive device 14 can be reduced. As a result, the elevator apparatus can further be downsized.
- the drive rope 17 is designed as a resin-coated rope coated with resin, so the coefficient of friction between each of the weight-side fixed pulley 8, the weight-side movable pulley 13, the hoistway-side upper return pulley 15, and the hoistway-side lower return pulley 16 and the drive rope 17 can be enhanced.
- the drive rope 17 can be prevented from slipping with respect to each of the pulleys 8, 13, 15, and 16.
- the curving performance of the drive rope 17 can also be improved. Therefore, for example, the outer diameter of each of the pulleys 8, 13, 15, and 16 can be reduced, so the space of the hoistway 1 can further be saved.
- That portion of the drive rope 17 which is looped around the weight-side fixed pulley 8 and that portion of the drive rope 17 which is looped around the weight-side movable pulley 13 are curved in opposite directions, so the weight-side fixed pulley 8 and the weight-side movable pulley 13 can be disposed on the same plane. As a result, the space for installation of the weight-side fixed pulley 8 and the weight-side movable pulley 13 can be reduced.
- the hoistway-side upper return pulley 15 is directly rotated due to the driving force of the drive device 14
- the hoistway-side lower return pulley 16 may be directly rotated due to the driving force of the drive device 14.
- the drive device 14 is disposed in the lower portion of the hoistway 1.
- the hoistway-side lower return pulley 16 is provided on the drive device 14.
- the main rope connection member 12 is displaced vertically with respect to the counterweight 3 through the turning of the turning lever 10
- the main rope connection member 12 may be displaced vertically with respect to the counterweight 3 by providing the counterweight 3 with a guide member for guiding the main rope connection member 12.
- each of the main ropes 6 may also be designed as a resin-coated rope.
- Embodiment 2
- Fig. 3 is a lateral view showing an elevator apparatus according to Embodiment 2 of the present invention.
- Fig. 4 is a top view showing the elevator apparatus of Fig. 3 .
- a first deflector pulley 21 and a second deflector pulley 22 which are disposed horizontally apart from each other, are provided in the upper portion of the hoistway 1.
- the first deflector pulley 21 and the second deflector pulley 22 are disposed above the counterweight 3.
- Each of the first deflector pulley 21 and the second deflector pulley 22 is rotatable around a rotary shaft disposed horizontally.
- the first deflector pulley 21 and the second deflector pulley 22 are supported by the support pedestal 18.
- the hoistway-side upper return pulley 15 is disposed horizontally apart from each of the first deflector pulley 21 and the second deflector pulley 22.
- the hoistway-side upper return pulley 15 is rotatable around a rotary shaft disposed vertically.
- the drive device 14 is disposed below the hoistway-side upper return pulley 15.
- the drive device 14 is disposed such that the radial direction thereof extends horizontally. That is, the drive device 14 is leveled.
- the drive device 14 and the hoistway-side upper return pulley 15 are disposed above the car 2.
- At least one of the main rope return pulleys 4 and 5, the first deflector pulley 21, and the second deflector pulley 22 has an upper end located higher than that of each of the drive device 14 and the hoistway-side upper return pulley 15. At least one of the main rope return pulleys 4 and 5, the first deflector pulley 21, and the second deflector pulley 22 has a lower end located lower than that of each of the drive device 14 and the hoistway-side upper return pulley 15.
- each of the main rope return pulleys 4 and 5 is located higher than the drive device 14 and the hoistway-side upper return pulley 15, and the lower end of each of the first deflector pulley 21 and the second deflector pulley 22 is located lower than the drive device 14 and the hoistway-side upper return pulley 15.
- Embodiment 2 of the present invention is identical to Embodiment 1 of the present invention in other constructional details.
- the first deflector pulley 21 and the second deflector pulley 22 are provided in the upper portion of the hoistway 1, the hoistway-side upper return pulley 15, which is rotatable around the rotary shaft disposed vertically, is disposed horizontally apart from the first deflector pulley 21 and the second deflector pulley 22, and the drive rope 17 is looped in succession around the first deflector pulley 21, the hoistway-side upper return pulley 15, and the second deflector pulley 22 in this order. Therefore, the same effect as in Embodiment 1 of the present invention is achieved. Also, the hoistway-side upper return pulley 15 can be disposed horizontally, so the height dimension of the hoistway 1 can further be reduced.
- the upper end of at least one of the main rope return pulleys 4 and 5, the first deflector pulley 21, and the second deflector pulley 22 is located higher than that of each of the drive device 14 and the hoistway-side upper return pulley 15, and the lower end of at least one of the main rope return pulleys 4 and 5, the first deflector pulley 21, and the second deflector pulley 22 is located lower than that of each of the drive device 14 and the hoistway-side upper return pulley 15. Therefore, the height dimension of the hoistway 1 can be prevented from being increased due to disposition of the drive device 14 and the hoistway-side upper return pulley 15 in the upper portion of the hoistway 1.
- That portion of the drive rope 17 which is looped around the weight-side fixed pulley 8 and that portion of the drive rope 17 which is looped around the weight-side movable pulley 13 are curved in the same direction, so the life of the drive rope 17 can be prolonged.
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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)
Abstract
Description
- The present invention relates to an elevator apparatus having a main rope for suspending a car and a counterweight, and a drive rope for transmitting a driving force of a drive device to the counterweight to raise/lower the car and the counterweight.
- Conventionally, with a view to raising/lowering a car and a counterweight, there is proposed an elevator apparatus structured to move a drive rope that is different from a main rope for suspending the car and the counterweight. In this conventional elevator apparatus, a weight-side sheave is mounted on the counterweight, and a plurality of hoistway-side sheaves are disposed in an upper portion of a hoistway and a lower portion of the hoistway. The drive rope is looped around the weight-side sheave and the hoistway-side sheaves. One end of the drive rope is connected to the upper portion of the hoistway, and a tension weight for applying a tensile force to the drive rope is suspended at the other end of the drive rope. When the hoistway-side sheaves are rotated by the drive device, the drive device is thereby moved (see Patent Document 1).
- Patent Document 1: International Publication
02/094701 - However, the tension weight applies the tensile force to the drive rope, so a space for disposition of the tension weight is required. Accordingly, the space of the hoistway cannot be saved with ease, so the elevator apparatus is increased in size.
- The present invention has been made to solve the above-mentioned problem, and it is therefore an obj ect of the present invention to provide an elevator apparatus enabling downsizing thereof.
- An elevator apparatus according to the present invention includes: a car and a counterweight that can be raised/lowered within a hoistway; a displacement body provided on the counterweight and displaceable with respect to the counterweight; a main rope connected to the displacement body, for suspending the car and the counterweight; a weight-side fixed pulley provided on the counterweight; a weight-side movable pulley provided on the displacement body and displaced away from the weight-side fixed pulley through displacement of the displacement body with respect to the counterweight resulting from pulling of the displacement body by the main rope; a hoistway-side upper return pulley provided in a upper portion of the hoistway; a hoistway-side lower return pulley provided in a lower portion of the hoistway; a drive rope having one end and the other end that are connected to the counterweight, looped in succession around the hoistway-side upper return pulley, the weight-side fixed pulley, the weight-side movable pulley, and the hoistway-side lower return pulley, and having a tensile force applied thereto through displacement of the weight-side movable pulley away from the weight-side fixed pulley; and a drive device for rotating at least one of the hoistway-side upper return pulley and the hoistway-side lower return pulley to raise/lower the car and the counterweight.
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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 top view showing the elevator apparatus ofFig. 1 . -
Fig. 3 is a lateral view showing an elevator apparatus according toEmbodiment 2 of the present invention. -
Fig. 4 is a top view showing the elevator apparatus ofFig. 3 . - 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 top view showing the elevator apparatus ofFig. 1 . Referring toFigs. 1 and2 , acar 2 and acounterweight 3 are provided within ahoistway 1 in a manner allowing thecar 2 and thecounterweight 3 to be raised/lowered. A pair of mainrope return pulleys hoistway 1. A plurality ofmain ropes 6 are looped around the mainrope return pulleys car 2 and thecounterweight 3 are suspended within thehoistway 1 by themain ropes 6. - The
counterweight 3 is provided with adisplacement body 7 that is displaceable vertically with respect to thecounterweight 3, and a weight-side fixedpulley 8 that is fixed in position with respect to thecounterweight 3. - The
displacement body 7 has aturning lever 10 that is turnable around a firsthorizontal shaft 9 mounted on thecounterweight 3, and a mainrope connection member 12 that is turnable around a secondhorizontal shaft 11 mounted at a tip of the turning lever 10 (end of turninglever 10 on the other side of firsthorizontal shaft 9 side). - Each of the
main ropes 6 is connected at one end thereof to the mainrope connection member 12, and at the other end thereof to an upper portion of thecar 2. Accordingly, thedisplacement body 7 receives from each of the main ropes 6 a force serving to displace thedisplacement body 7 upward with respect to the counterweight 3 (force serving to pull updisplacement body 7 with respect to counterweight 3). That is, thedisplacement body 7 is pulled by themain ropes 6 to be displaced upward with respect to thecounterweight 3. - The
displacement body 7 is provided with a weight-sidemovable pulley 13 that is rotatable around the secondhorizontal shaft 11. The weight-sidemovable pulley 13 is disposed above the weight-side fixedpulley 8. Accordingly, when thedisplacement body 7 is pulled by themain ropes 6 to be displaced upward with respect to thecounterweight 3, the weight-sidemovable pulley 13 is thereby displaced away from the weight-side fixedpulley 8. - A
drive device 14 for generating a driving force for raising/lowering thecar 2 and thecounterweight 3, and a hoistway-sideupper return pulley 15 provided on thedrive device 14 are provided in the upper portion of thehoistway 1. Thedrive device 14 is disposed above thecounterweight 3. Thedrive device 14 is designed as a low-profile hoisting machine with an axial dimension smaller than a radial dimension. The hoistway-sideupper return pulley 15 is rotated around an upper rotary shaft disposed horizontally, due to the driving force of thedrive device 14. - A hoistway-side
lower return pulley 16 is provided in a lower portion of thehoistway 1. The hoistway-sidelower return pulley 16 is rotatable around a lower rotary shaft disposed horizontally. - A
drive rope 17, which is moved together with thecounterweight 3, is looped in succession around the hoistway-sideupper return pulley 15, the weight-side fixedpulley 8, the weight-sidemovable pulley 13, and the hoistway-sidelower return pulley 16. Thedrive rope 17 is designed as a resin-coated rope having an outer layer coated with resin. - The
drive rope 17 has oneend 17a connected to an upper portion of thecounterweight 3, and theother end 17b connected to a lower portion of thecounterweight 3. Thedrive rope 17, which extends from oneend 17a to theother end 17b, is looped around the hoistway-sideupper return pulley 15, the weight-side fixedpulley 8, the weight-sidemovable pulley 13, and the hoistway-sidelower return pulley 16 in this order. That portion of thedrive rope 17 which is looped around the weight-side fixedpulley 8 and that portion of thedrive rope 17 which is looped around the weight-sidemovable pulley 13 are curved in opposite directions. - The
displacement body 7 is constantly urged to be pulled up with respect to thecounterweight 3 through the suspension of thecar 2 and thecounterweight 3 by themain ropes 6. Thus; thedisplacement body 7 is displaced upward with respect to thecounterweight 3, and the weight-sidemovable pulley 13 is displaced away from the weight-side fixedpulley 8. A tensile force is applied to thedrive rope 17 through displacement of the weight-sidemovable pulley 13 away from the weight-side fixedpulley 8. Thus, a frictional force is secured between each of the weight-side fixedpulley 8, the weight-sidemovable pulley 13, the hoistway-sideupper return pulley 15, and the hoistway-sidelower return pulley 16 and thedrive rope 17. - When the
drive device 14 rotates the hoistway-sideupper return pulley 15, thedrive rope 17 is thereby moved together with thecounterweight 3. Thecar 2 is moved in the opposite direction from thecounterweight 3 through the movement of thecounterweight 3. - The main
rope return pulleys drive device 14, and the hoistway-sideupper return pulley 15 are supported by asupport pedestal 18 fixed to the upper portion of thehoistway 1. - In the elevator apparatus constructed as described above, when the
main ropes 6 for suspending thecar 2 and thecounterweight 3 pull up thedisplacement body 7 with respect to thecounterweight 3, the weight-sidemovable pulley 13 is displaced away from the weight-side fixedpulley 8. Thus, a tensile force is applied to thedrive rope 17 which is looped in succession around the weight-sidemovable pulley 13 and the weight-side fixedpulley 8. Therefore, the tensile force can be applied to thedrive rope 17 due to forces exerted by themain ropes 6 to suspend thecounterweight 3. Thus, there is no need to separately provide a dedicated tension weight for applying a tensile force to thedrive rope 17. Accordingly, the space of thehoistway 1 can be saved, so the elevator apparatus can be downsized. - The
drive device 14 is designed as a low-profile hoisting machine, so the space for installation of thedrive device 14 can be reduced. As a result, the elevator apparatus can further be downsized. - The
drive rope 17 is designed as a resin-coated rope coated with resin, so the coefficient of friction between each of the weight-side fixedpulley 8, the weight-sidemovable pulley 13, the hoistway-sideupper return pulley 15, and the hoistway-sidelower return pulley 16 and thedrive rope 17 can be enhanced. Thus, thedrive rope 17 can be prevented from slipping with respect to each of thepulleys drive rope 17 can also be improved. Therefore, for example, the outer diameter of each of thepulleys hoistway 1 can further be saved. - That portion of the
drive rope 17 which is looped around the weight-side fixedpulley 8 and that portion of thedrive rope 17 which is looped around the weight-sidemovable pulley 13 are curved in opposite directions, so the weight-side fixedpulley 8 and the weight-sidemovable pulley 13 can be disposed on the same plane. As a result, the space for installation of the weight-side fixedpulley 8 and the weight-sidemovable pulley 13 can be reduced. - While in the foregoing example, the hoistway-side
upper return pulley 15 is directly rotated due to the driving force of thedrive device 14, the hoistway-sidelower return pulley 16 may be directly rotated due to the driving force of thedrive device 14. In this case, thedrive device 14 is disposed in the lower portion of thehoistway 1. The hoistway-sidelower return pulley 16 is provided on thedrive device 14. - While in the foregoing example, the main
rope connection member 12 is displaced vertically with respect to thecounterweight 3 through the turning of the turninglever 10, the mainrope connection member 12 may be displaced vertically with respect to thecounterweight 3 by providing thecounterweight 3 with a guide member for guiding the mainrope connection member 12. - While in the foregoing example, only the
drive rope 17 is designed as a resin-coated rope, each of themain ropes 6 may also be designed as a resin-coated rope.
Embodiment 2 -
Fig. 3 is a lateral view showing an elevator apparatus according toEmbodiment 2 of the present invention.Fig. 4 is a top view showing the elevator apparatus ofFig. 3 . Referring toFigs. 3 and4 , afirst deflector pulley 21 and asecond deflector pulley 22, which are disposed horizontally apart from each other, are provided in the upper portion of thehoistway 1. Thefirst deflector pulley 21 and thesecond deflector pulley 22 are disposed above thecounterweight 3. Each of thefirst deflector pulley 21 and thesecond deflector pulley 22 is rotatable around a rotary shaft disposed horizontally. In addition, thefirst deflector pulley 21 and thesecond deflector pulley 22 are supported by thesupport pedestal 18. - The hoistway-side
upper return pulley 15 is disposed horizontally apart from each of thefirst deflector pulley 21 and thesecond deflector pulley 22. The hoistway-sideupper return pulley 15 is rotatable around a rotary shaft disposed vertically. - The
drive device 14 is disposed below the hoistway-sideupper return pulley 15. Thedrive device 14 is disposed such that the radial direction thereof extends horizontally. That is, thedrive device 14 is leveled. Thedrive device 14 and the hoistway-sideupper return pulley 15 are disposed above thecar 2. - At least one of the main rope return pulleys 4 and 5, the
first deflector pulley 21, and thesecond deflector pulley 22 has an upper end located higher than that of each of thedrive device 14 and the hoistway-sideupper return pulley 15. At least one of the main rope return pulleys 4 and 5, thefirst deflector pulley 21, and thesecond deflector pulley 22 has a lower end located lower than that of each of thedrive device 14 and the hoistway-sideupper return pulley 15. In this example, the upper end of each of the main rope return pulleys 4 and 5 is located higher than thedrive device 14 and the hoistway-sideupper return pulley 15, and the lower end of each of thefirst deflector pulley 21 and thesecond deflector pulley 22 is located lower than thedrive device 14 and the hoistway-sideupper return pulley 15. - The
drive rope 17, which extends from oneend 17a thereof connected to the upper portion of thecounterweight 3 to theother end 17b thereof connected to the lower portion of thecounterweight 3, is looped around thefirst deflector pulley 21, the hoistway-sideupper return pulley 15, thesecond deflector pulley 22, the weight-side fixedpulley 8, the weight-sidemovable pulley 13, and the hoistway-sidelower return pulley 16 in this order. That portion of thedrive rope 17 which is looped around the weight-side fixedpulley 8 and that portion of thedrive rope 17 which is looped around the weight-sidemovable pulley 13 are curved in the same direction.Embodiment 2 of the present invention is identical toEmbodiment 1 of the present invention in other constructional details. - In the elevator apparatus constructed as described above, the
first deflector pulley 21 and thesecond deflector pulley 22 are provided in the upper portion of thehoistway 1, the hoistway-sideupper return pulley 15, which is rotatable around the rotary shaft disposed vertically, is disposed horizontally apart from thefirst deflector pulley 21 and thesecond deflector pulley 22, and thedrive rope 17 is looped in succession around thefirst deflector pulley 21, the hoistway-sideupper return pulley 15, and thesecond deflector pulley 22 in this order. Therefore, the same effect as inEmbodiment 1 of the present invention is achieved. Also, the hoistway-sideupper return pulley 15 can be disposed horizontally, so the height dimension of thehoistway 1 can further be reduced. - The upper end of at least one of the main rope return pulleys 4 and 5, the
first deflector pulley 21, and thesecond deflector pulley 22 is located higher than that of each of thedrive device 14 and the hoistway-sideupper return pulley 15, and the lower end of at least one of the main rope return pulleys 4 and 5, thefirst deflector pulley 21, and thesecond deflector pulley 22 is located lower than that of each of thedrive device 14 and the hoistway-sideupper return pulley 15. Therefore, the height dimension of thehoistway 1 can be prevented from being increased due to disposition of thedrive device 14 and the hoistway-sideupper return pulley 15 in the upper portion of thehoistway 1. - That portion of the
drive rope 17 which is looped around the weight-side fixedpulley 8 and that portion of thedrive rope 17 which is looped around the weight-sidemovable pulley 13 are curved in the same direction, so the life of thedrive rope 17 can be prolonged.
Claims (5)
- An elevator apparatus, comprising:a car and a counterweight that can be raised/lowered within a hoistway;a displacement body provided on the counterweight and displaceable with respect to the counterweight;a main rope connected to the displacement body, for suspending the car and the counterweight;a weight-side fixed pulley provided on the counterweight;a weight-side movable pulley provided on the displacement body and displaced away from the weight-side fixed pulley through displacement of the displacement body with respect to the counterweight resulting from pulling of the displacement body by the main rope;a hoistway-side upper return pulley provided in a upper portion of the hoistway;a hoistway-side lower return pulley provided in a lower portion of the hoistway;a drive rope having one end and the other end that are connected to the counterweight, looped in succession around the hoistway-side upper return pulley, the weight-side fixed pulley, the weight-side movable pulley, and the hoistway-side lower return pulley, and having a tensile force applied thereto through displacement of the weight-side movable pulley away from the weight-side fixed pulley;
anda drive device for rotating at least one of the hoistway-side upper return pulley and the hoistway-side lower return pulley to raise/lower the car and the counterweight. - An elevator apparatus, comprising:a car and a counterweight that can be raised/lowered within a hoistway;a displacement body provided on the counterweight and displaceable with respect to the counterweight;a main rope connected to the displacement body, for suspending the car and the counterweight;a weight-side fixed pulley provided on the counterweight;a weight-side movable pulley provided on the displacement body and displaced away from the weight-side fixed pulley through displacement of the displacement body with respect to the counterweight resulting from pulling of the displacement body by the main rope;a first deflector pulley and a second deflector pulley that are provided in an upper portion of the hoistway;a hoistway-side upper return pulley disposed horizontally apart from the first deflector pulley and the second deflector pulley and rotatable around a rotary shaft disposed vertically;a hoistway-side lower return pulley provided in a lower portion of the hoistway;a drive rope having one end and the other end that are connected to the counterweight, looped in succession around the first deflector pulley, the hoistway-side upper return pulley, the second deflector pulley, the weight-side fixed pulley, the weight-side movable pulley, and the hoistway-side lower return pulley, and having a tensile force applied thereto through displacement of the weight-side movable pulley away from the weight-side fixed pulley; anda drive device for rotating the hoistway-side upper return pulley to raise/lower the car and the counterweight.
- An elevator apparatus according to Claim 2, wherein:at least one of the main rope return pulley, the first deflector pulley, and the second deflector pulley has an upper end located higher than that of each of the hoistway-side upper return pulley and the drive device; andat least one of the main rope return pulley, the first deflector pulley, and the second deflector pulley has a lower end located lower than that of each of the hoistway-side upper return pulley and the drive device.
- An elevator apparatus according to Claim 1 or 2, wherein the drive device comprises a low-profile hoisting machine.
- An elevator apparatus according to Claim 1 or 2, wherein at least one of the main rope and the drive rope comprises a resin-coated rope coated with resin.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/310988 WO2007138706A1 (en) | 2006-06-01 | 2006-06-01 | Elevator device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2022743A1 true EP2022743A1 (en) | 2009-02-11 |
EP2022743A4 EP2022743A4 (en) | 2013-04-10 |
Family
ID=38778234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06780622.4A Withdrawn EP2022743A4 (en) | 2006-06-01 | 2006-06-01 | Elevator device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2022743A4 (en) |
JP (1) | JPWO2007138706A1 (en) |
KR (1) | KR100975689B1 (en) |
CN (1) | CN101356110B (en) |
WO (1) | WO2007138706A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITFI20110112A1 (en) * | 2011-05-27 | 2012-11-28 | A R E S R L | TRACTION DEVICE FOR ELEVATORS |
EP3168181A4 (en) * | 2014-07-07 | 2018-04-25 | Mac Puar, S.A. | Compact drive system for lifts |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5170533B2 (en) | 2008-01-24 | 2013-03-27 | 日本電気株式会社 | Wireless transmission apparatus, modulation method determination method and program thereof |
WO2012023204A1 (en) * | 2010-08-20 | 2012-02-23 | 三菱電機株式会社 | Elevator device |
CN111675072B (en) * | 2020-06-10 | 2022-10-04 | 安徽建筑大学 | Counter weight self-adaptation energy-saving elevator |
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JP2002338163A (en) * | 2001-04-27 | 2002-11-27 | Otis Elevator Co | Counter weight drive elevator |
US20030155185A1 (en) * | 2001-03-08 | 2003-08-21 | Masami Nomura | Elevator |
EP1595840A1 (en) * | 2003-02-19 | 2005-11-16 | Mitsubishi Denki Kabushiki Kaisha | Elevator |
WO2006021996A1 (en) * | 2004-08-25 | 2006-03-02 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
Family Cites Families (5)
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JPS6052996B2 (en) | 1982-04-12 | 1985-11-22 | 株式会社日立製作所 | elevator drive device |
DE9201374U1 (en) * | 1992-02-05 | 1992-04-02 | C. Haushahn Gmbh & Co, 7000 Stuttgart, De | |
JP2000063057A (en) * | 1998-06-08 | 2000-02-29 | Meidensha Corp | Elevator |
JPWO2002094701A1 (en) * | 2001-05-24 | 2004-09-09 | 三菱電機株式会社 | Elevator equipment |
CN100513286C (en) * | 2004-08-27 | 2009-07-15 | 三菱电机株式会社 | Elevator apparatus |
-
2006
- 2006-06-01 CN CN2006800504948A patent/CN101356110B/en not_active Expired - Fee Related
- 2006-06-01 WO PCT/JP2006/310988 patent/WO2007138706A1/en active Application Filing
- 2006-06-01 JP JP2007515718A patent/JPWO2007138706A1/en active Pending
- 2006-06-01 KR KR1020087014162A patent/KR100975689B1/en not_active IP Right Cessation
- 2006-06-01 EP EP06780622.4A patent/EP2022743A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030155185A1 (en) * | 2001-03-08 | 2003-08-21 | Masami Nomura | Elevator |
JP2002338163A (en) * | 2001-04-27 | 2002-11-27 | Otis Elevator Co | Counter weight drive elevator |
EP1595840A1 (en) * | 2003-02-19 | 2005-11-16 | Mitsubishi Denki Kabushiki Kaisha | Elevator |
WO2006021996A1 (en) * | 2004-08-25 | 2006-03-02 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
Non-Patent Citations (1)
Title |
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See also references of WO2007138706A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITFI20110112A1 (en) * | 2011-05-27 | 2012-11-28 | A R E S R L | TRACTION DEVICE FOR ELEVATORS |
EP3168181A4 (en) * | 2014-07-07 | 2018-04-25 | Mac Puar, S.A. | Compact drive system for lifts |
Also Published As
Publication number | Publication date |
---|---|
KR100975689B1 (en) | 2010-08-12 |
CN101356110B (en) | 2010-07-14 |
KR20080072715A (en) | 2008-08-06 |
CN101356110A (en) | 2009-01-28 |
WO2007138706A1 (en) | 2007-12-06 |
JPWO2007138706A1 (en) | 2009-10-01 |
EP2022743A4 (en) | 2013-04-10 |
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