WO2007029950A1 - Small power elevator - Google Patents
Small power elevator Download PDFInfo
- Publication number
- WO2007029950A1 WO2007029950A1 PCT/KR2006/003508 KR2006003508W WO2007029950A1 WO 2007029950 A1 WO2007029950 A1 WO 2007029950A1 KR 2006003508 W KR2006003508 W KR 2006003508W WO 2007029950 A1 WO2007029950 A1 WO 2007029950A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mass
- counterweight
- mass member
- elevator car
- elevator
- Prior art date
Links
- 230000004044 response Effects 0.000 claims description 15
- 230000032258 transport Effects 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 230000001419 dependent effect Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical compound CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
Definitions
- the present invention relates to a small power elevator, and more particularly to a small power elevator system designed to operate according to the principle of a well bucket in order to reduce power consumption.
- an elevator system is an apparatus that moves vertically along a rail using mechanical power to carry passengers or freight.
- the elevator system is a type of lift equipment, that is, the general term for transport equipment including an escalator and a dumbwaiter.
- a cable type elevator system generally uses a counterweight. This type is to move an elevator car based on the frictional force between a winding sheave (pulley) and a wire cable, in which a counterweight is connected to the opposite end of the wire cable from the car, like a well bucket.
- a winding sheave Pulley
- a counterweight is connected to the opposite end of the wire cable from the car, like a well bucket.
- This existing elevator system is operated by speed control through gear shifting or an inverter, in which a wire cable is connected to a hoist that is directly coupled to a drive motor installed in a machine room in a top portion of a building.
- a dedicated transformer needs a capacity of about 50KVA.
- a shared transformer has practical problems: operation and suspension cause voltage fluctuations, and harmonics, generated upon inverter operation, have adverse effects on other devices.
- the present invention has been devised to solve the foregoing problems, and it is therefore an object of the invention to provide a small power elevator system capable of reducing power consumption to thereby reduce electric charges, such as basic rates and usage rates.
- the invention provides a small power elevator system installed in an elevator shaft of a building.
- the small power elevator system includes a passenger or freight elevator car having an electronic scale installed in a floor thereof to measure the weight of passengers or freight loaded; a counterweight connected to the elevator car and adapted to be moved in the opposite direction to the elevator car by mass members added or removed according to the weight of the elevator car; a mass member feeder for feeding the mass members to the counterweight; and a control unit for controlling the mass members to be fed from the mass member feeder to the counterweight or discharged from the counterweight to the mass member feeder according to the weight of the elevator car.
- the counterweight includes: a box having a mass member inlet for receiving the mass members from the mass member feeder, and a mass member outlet installed in a lower portion of the box to discharge a certain amount of the mass members to the mass member feeder in response to a control signal from the control unit; and an electronic scale installed in the floor of the box to measure the weight of the mass members inside the box and send a measurement value to the control unit.
- the mass member feeder includes: a first mass member hopper arranged in an upper portion of the elevator shaft to feed a certain amount of the mass members to the counterweight in response to a control signal from the control unit; a second mass member hopper arranged in a lower portion of the elevator shaft to collect the mass members discharged from the counterweight; and a feed screw unit including a casing having an inlet formed at one portion thereof, an outlet formed at another portion thereof, an inner space, a feed screw arranged inside the inner space of the casing, and a transport pipe.
- the feed screw transports the mass members upward through the outlet of the casing and the feeding pipe using the rotating force of the drive motor in order to feed the mass members to the first mass member hopper.
- the first mass member hopper includes: a mass member container fixed to one portion of the elevator shaft to collect the mass members fed from a conveyor belt of the feed screw unit, the mass member having a feeding hole in a lower portion thereof; a plurality of openable doors arranged vertically to separate the inner space of the mass member container into a plurality of areas; and a movable pipe for guiding the mass members exiting through the feeding holes of the mass member container to the counterweight.
- the openable doors are selectively opened/closed in response to the control signal from the control unit to feed the mass members to the counterweight.
- the second mass member hopper includes: a mass member container fixed to one portion of the elevator shaft to collect the mass members discharged from the counterweight; and a movable pipe arranged in an upper portion of the mass member container to guide the mass members discharged from the counterweight.
- the elevator car has a graphic monitor installed on an inner wall surface to display the mass members being fed or discharged.
- An uninterrup table power supply can be provided at the bottom of the elevator shaft in preparation for an accident concerning elevator stability. This also can reduce the amount of power consumption and stably supply power so that the elevator system can be stably operated according to the capacity of the uninterruptable power supply in the event of a power failure.
- the elevator system of the invention is suitable for elevator systems for emergencies and observations, and for high speed elevator systems. When used for these applications, the elevator system of the invention can save more energy and enhance safety.
- the elevator system of the invention is also applicable to a freight lift having a large capacity.
- FIG. 1 is a perspective view illustrating a small power elevator system of the invention
- FIG. 2 is a side elevation view schematically illustrating the counterweight of the invention
- FIG. 3 is a side elevation view schematically illustrating the small power elevator system of the invention
- FIG. 4 is a side elevation view schematically illustrating a feed screw unit of the invention
- FIG. 5 is a view illustrating the elevator system according to a preferred embodiment of the invention, in which the elevator car has arrived at the top floor and the counterweight has arrived at the bottom floor; [24] FIG.
- FIG. 6 is a view illustrating the elevator system according to another preferred embodiment of the invention, in which the elevator car has arrived at the top floor and the counterweight has arrived at the bottom floor; and [25]
- FIG. 7 is a perspective view illustrating a small power elevator system according to a further preferred embodiment of the invention. [26] ⁇ Major Reference Signs of the Drawings >
- FIG. 1 is a perspective view illustrating a small power elevator system of the invention
- FIG. 2 is a side elevation view schematically illustrating the counterweight of the invention
- FIG. 3 is a side elevation view schematically illustrating the small power elevator system of the invention
- FIG. 4 is a side elevation view schematically illustrating a feed screw of the invention.
- the small power elevator system of the invention is designed to supply necessary mass members 1 to a counterweight 20 in consideration of a comparison of the weight of an elevator car 10 and passengers with that of a counterweight 20 in order to assist the operation of the elevator system.
- the small power elevator system also employs various auxiliary units necessary for the operation of general elevator systems, such as a door closing unit, an automatic landing device, an electronic brake, electric control devices (e.g.
- a receiver board, controller, signal board and flow control device a receiver board, controller, signal board and flow control device
- guide rails cables
- a governor for dual protection
- slow-down switches on all floors from the top to the bottom floors, motion switches on the top and bottom floors for use in the event that the slowdown switches do not operate, a retiring cam, a door safety switch, and other safety devices.
- the small power elevator system of the invention is generally composed of the elevator car for carrying passengers or freight, the counterweight 20 arranged opposite the elevator car 10 to be balanced with the elevator car 10, a mass member feeder 30 supplying the mass members 1 to the counterweight 20, and a control unit 40 electrically connected to the former components. These components will be described respectively below.
- the elevator car 10 is designed to carry passengers or freight, and has an electronic scale 110, for weighing passengers or loaded freight, installed in the bottom of the elevator car 10.
- the weight measured by the electronic scale 110 is transferred to the control unit 40.
- the electronic scale 110 is preferably installed near overload equipment.
- a graphic monitor 120 is installed inside the elevator car 10 to display the mass members 1 being fed into or discharged from the counterweight 20 to the passengers so that the passengers do not become bored during the feeding/discharging of the mass members 1.
- a brake operates to stop the elevator system during the feeding/discharging of the mass members 1.
- the mass members 1 are preferably steel balls.
- the mass members 1 are steel balls because steel has a specific gravity of 7.8 compared to water, which has a specific gravity of 1, and thus can reduce volume greatly. Using a feed screw or conveyor belt, about 2 tons of the mass members 1 can drive the elevator car to the top portion of a building, thereby advantageously reducing running time.
- the counterweight 20 is arranged opposite the elevator car 10 to be moved by a hoist 2, a governor 3 and a main cable 4 in the direction opposite that of the elevator car 10, in which the mass members 1 are added to or removed from the counterweight 20 according to the weight of the elevator car 10.
- the counterweight 20 has a box 210 therein for receiving the mass members 1 to drive the elevator car upward/downward in place of driving force from a common drive motor.
- the counterweight 20 has a mass member inlet 212 formed in an upper portion of the box 210 and a mass member outlet 214 formed in a lower portion of the box 210, through which the mass members 1 are introduced by or discharged into the mass member feeder 30, which will described later.
- the box 210 is provided with a slant at the bottom to guide the mass members 1 toward the mass member outlet 214 and an electronic scale 220 installed inside the bottom to measure the total weight of the mass members 1 loaded inside the box 210 and send a measurement signal to the control unit 40.
- the mass member feeder 30 serves to feed the mass members 1 to the counterweight 20, and includes a first mass member hopper 310, a second mass member hopper 320 and a feed screw unit 330, which are arranged from top to bottom ends of an elevator shaft.
- the first mass member hopper 310 is installed in an upper part of the elevator shaft, and has a mass member container 312 for collecting the mass members 1 dropping from the feed screw unit 330, which will be described later in detail, and a plurality of vertical doors 314 for separating the inner space of the mass member container 312 into a plurality of rooms.
- the first mass member hopper 310 is opened/closed in response to a control signal from the control unit to feed the mass members to the counterweight 20.
- the mass member container 312 has a slant so that the mass members 1 contained therein can gather together in one portion. At one end of the slant, a mass member feeding hole 316 is formed to be opened/closed in response to an opening/closing signal from the control unit 40.
- a movable pipe 318 is arranged at one side of the mass member feeding hole 316.
- the movable pipe 318 is designed to be variable in length in response to a control signal from the control unit 40 to guide the mass members 1 discharged out of the mass member feeding hole 316 to the mass member inlet 212 of the counterweight 20. That is, when the elevator car 10 stays at a target floor after being elevated, the movable pipe 318 is controlled by the control signal of the control unit 40 to connect the first mass member hopper 310 with the counterweight 20, so that the mass members 1 can be stably fed.
- the second mass member hopper 320 is arranged in a lower part of the elevator shaft where the elevator system is installed.
- the second mass member hopper 320 has a mass member container 322 for collecting the mass members 1 discharged from the counterweight 20.
- the second mass member hopper 320 also has a movable pipe 324 for guiding the mass members 1 discharged from the counterweight 20.
- the movable pipe 324 is also designed to be variable in length in response to a control signal from the control unit 40 in order to guide the mass members 1 discharged out of the mass member outlet 230 of the counterweight 20 to the feed screw unit 330 stably.
- the mass member 1 automatically rolls or slides on a slant of the second mass member hopper 320 to feed into the feed screw unit 330, which will be described later.
- the feed screw unit 330 has an inlet 331 on one side, an outlet
- a casing 333 having an inner space
- a feed screw 334 rotatably installed inside the inner space of the casing 333
- a drive motor 335 With rotating force from the drive motor 335, the mass members 1 introduced through the inlet 331 are transported from the bottom to the top through a transport pipe 336.
- the drive motor 335 when actuated, rotates the feed screw 334 connected to the output side of the drive motor 335.
- the mass members 1 stored in the mass member container 322 are charged into the inlet 331 of the casing 333 and move upward along a groove of the feed screw 334.
- the mass members 1 are discharged through the outlet 332 of the casing 333 and are then transported upward in succession through the transport pipe 336.
- the control unit 40 is installed in a control panel of the elevator system, and connected to a power cable 5 moving along with the elevator car 10 to control and manage the speed and operation of the elevator car 10.
- the control unit 40 also controls the feeding of the mass members 1 to the counterweight 20 from the mass member containers 310 and 320 in proportion to the weight of passengers or freight measured by the electronic scales 110 and 220 installed respectively in the elevator car 10 and the counterweight 20, or to be discharged from the counterweight 20 to the mass member containers 310 and 320.
- control unit 40 controls the mass members 1 stored in the first mass member hopper 310 to feed into the counterweight 20 or the mass members 1 loaded in the counterweight 20 to be discharged to the second mass member hopper 320 in response to a weight measurement signal from the electronic scales of the elevator car 10 and the counterweight 20.
- control unit 40 controls the opening/ closing of the mass member outlet 214 of the counterweight 20, the opening/closing of the mass member feeding hole 316 of the first mass member hopper 310, the operation of the movable pipe 318 and the operation of the movable pipe 324 of the second mass member hopper 320, and cooperatively controls the operation of the feed screw unit 330.
- FIG. 5 is a view illustrating the elevator system according to a preferred embodiment of the invention, in which the elevator car has arrived at the top floor and the counterweight has arrived at the bottom floor.
- the mass members 1 are stacked in the second mass member hopper 320. Thanks to the slanted bottom of the second mass member hopper 320, the mass members 1 move into the casing 333 of the feed screw unit 330 and into the feed screw 334. Then, as the feed screw 334 is rotated by the drive motor 335, the mass members 1 are vertically transported along the transport pipe 336 to the first mass member hopper 310 in succession, where the mass members 1 are stored.
- the electronic scale 110 installed in the bottom of the elevator car 10 measures the weight of the elevator car 10 and the total weight of the passengers, classifies the measured weight into heavy, medium and light weights, and sends a measurement signal to the control unit 40 electrically connected therewith before the departure of the elevator car 10.
- the control unit 40 calculates the feeding amount of the mass members 1 so that the total weight of the counterweight and the mass members 1 loaded therein is greater than the total weight of the elevator car 10 (including the passengers), connects the movable pipe 318 of the first member hopper 310 to the mass member inlet 212 of the counterweight 20, and opens and closes the doors 314 and mass member feeding holes 316 of the mass member container 312.
- the number of doors 314 to open is classified into many, medium, and few. In the case where a small number of passengers is in the elevator car, one of the doors 314 is moved to open in response to a signal from the control unit. In the case where a large number of passengers is present in the elevator car, all of the doors 314 are opened.
- the mass members 1 in the mass member container 312 enter the counterweight through the mass member feeding hole 316 and the movable pipe 318.
- the drawing illustrates all of the doors 314 opened in the case where a large number of passengers is in the elevator car.
- the elevator car 10 is driven upward and the counterweight 20 moves down, so that the elevator car 10 can arrive to a target floor desired by a passenger.
- FIG. 6 is a view illustrating the elevator system according to another preferred embodiment of the invention, in which the elevator car has arrived at the top floor and the counterweight has arrived at the bottom floor.
- the elevator car 10 stands by at the top floor (5th floor) and the counterweight 20 is moved down to the bottom floor (1st floor) so that the mass members 1 in use for weight enhancement/reduction are discharged to the second mass member hopper 320 installed in the bottom floor.
- the control unit 40 calculates the discharging amount of the mass members 1 so that the counterweight and the mass members loaded therein weigh less than the total weight of the elevator car 10, connects the movable pipe 324 of the second mass member hopper 320 to the mass member outlet 214 of the counterweight 20, and opens the mass member outlet 214 of the counterweight 20, so that the mass members 1 are discharged to the second mass member hopper 320.
- the electronic scale 220 detects the weight of the mass members 1 discharged from the counterweight 20, and when the weight of the discharged mass members reaches a calculated value, sends a signal again to the control unit 40 to close the mass member outlet 214.
- the cable gripper or electronic brake (not shown) gradually decreases pressure so that the elevator car 10 is moved downward by its own weight, but the counterweight 20 is driven upward.
- upper first mass member hoppers 310 and lower second mass member hoppers 320 may be installed at several points between the top and bottom floors. That is, in the case where the elevator car, having been driven upward to a specific floor, is to be moved down without reaching the top floor, the elevator car 10 can be moved downward when the mass members 1 are discharged from the counterweight 20 to the second mass member hopper 320. Likewise, the elevator car can be also driven in the opposite situation. However, the mass member hoppers 310 and 320 may be installed on every third or fifth floor to suitably satisfy demands when it is inefficient to install the hoppers 310 and 320 on every floor.
- the mass members 1 contained in a mass member hopper 310 or 320 on a specific floor exceed or are short of a predetermined amount, based on a detection signal from an electronic scale (not shown) installed in the mass member hopper 310 or 320, the mass members 1 are discharged or fed through the transport pipe 333 of the feed screw unit 330.
- FIG. 7 is a perspective view illustrating a small power elevator system according to a further preferred embodiment of the invention, in which a bucket conveyor unit 340 is provided as the mass member feeder 30.
- the bucket conveyor unit 340 includes a conveyor 342 vertically arranged adjacent to the first and second mass member hoppers 310 and 320, a ratchet gear 344 arranged in an upper portion of the vertical conveyor 342 to be adjacent to the first mass member hopper 310, a ratchet gear 344' arranged in a lower portion of the vertical conveyor 342 to be adjacent to the second mass member hopper 320, and a plurality of buckets 346 mounted on the vertical conveyor 342, in which each of the buckets 346 can contain at least two mass members 1.
- the bucket conveyor unit 340 also includes a tension gear 348, arranged at one side of the vertical conveyor 342 to apply tension thereto, and a drive motor (not shown) for driving the vertical conveyor 342, arranged rearward of a central portion of the lower ratchet gear 344'.
- the buckets 346 mounted on the vertical conveyor 342 enter the second mass member hopper 320 filled with a number of mass members 1 while moving up and down. Accordingly, some of the mass members 1 are carried by the bucket 346 and transported upward in succession. When the buckets 346 turn over at the end of the vertical transport, the mass members 1 drop from the buckets 346 into the first mass member hopper 310.
- the mass members 1 of the invention are steel balls.
- 7 minutes will be spent to raise the steel balls when the steel balls are fed at a rate of 0.28 tons per minute and the weight of the steel balls necessary for driving the small power elevator system is at least 1.96 tons.
- the elevator car Since the elevator car is rarely full in a common apartment building, it is possible to properly satisfy demand by installing the first mass hopper 310 in the top floor of the apartment building to have a capacity of about 4 tons.
- Such an elevator system is suitable not only for passenger elevators but also for observation elevators and elevators for the disabled. If the time required for feeding and discharging the steel balls causes inconvenience owing to frequent interruptions, the steel balls may be made of a material having a higher specific gravity.
- a general elevator system uses a drive motor having a capacity of 1 IkW, which requires a transformer capacity of 50KVA. This increases basic rates. Wattage- dependent rates also increase with the elevator system suddenly stopping and departing. Accordingly, the pad transformer and the pole transformer must be increased in capacity. In the middle of the night, when the elevator system seldom operates, the dedicated transformer of the elevator system has increased no-load loss. Even with a shared transformer, transformer capacity also increases corresponding to 50KVA, which also increases no-load loss accordingly.
- the small power elevator system of the invention in a case where the small power elevator system of the invention is provided with a 5.5kW conveyor for upward hoisting, the magnitude of about 5.5kW allows Y- ⁇ starting. This makes it possible to additionally use 5.5kW of capacity from the existing transformer used for lighting and electric heating, without having to add a separate transformer. Accordingly, the small power elevator system of the invention can reduce electric charges such as basic rates corresponding to 50KVA, usage rates and no-load power rates. Thus, it is possible to save a remarkable amount of energy while preventing conventional problems. Otherwise, harmonics caused by inverter's operation would have adverse effects on other devices and transformer capacity would have to be increased according to the capacity of the drive motor.
- the drive motor 335 of the feed screw unit 330 has a capacity of 5.5kW, and 0.5kW is consumed to open/close the mass member outlet 214 of the counterweight 20 and the mass member feeding hole 316 of the first mass member hopper 310.
- the operation mode of the invention can be compared with the conventional inverter type as follows: First, the inverter is expected to generate high frequency waves or harmonics.
- the small power elevator system of the invention can save more energy when the drive motor used in the feed screw or conveyor belt is used as an inverter.
- the small power elevator system of the invention needs to supply electric power to the drive motor 335 of the feed screw unit 330 for hoisting the mass members 1 to an upper floor since the elevator car 10 is driven upward under the weight of the mass members 1, but the elevator car 10 is moved down by its own weight. Therefore, with the other conditions the same, energy consumption is advantageously halved.
- the small power elevator system of the invention includes the upper first mass member hopper 310 and the lower second mass member hopper 320 inside upper and lower walls of the elevator shaft, and includes the feed screw unit 330 connecting the first and second mass member hoppers 310 and 320 so that the mass members 1 can be fed upward and downward efficiently.
- the electronic scale 110 installed in the bottom of the elevator car 10 sends a signal associated with the number of passengers and the weight of the elevator car, so that the control unit 40, electrically connected to the former, detects the signal.
- the control unit 40 opens/closes the mass member feeding hole 314 of the first mass member hopper 310 to feed a specific amount of the mass members 1 to the counterweight 20 so that the counterweight 20 moves down under the weight thereof, but the elevator car 10 is driven under the weight of the counterweight 20.
- the counterweight 20 at the bottom or reference floor discharges the mass member 1 to the second mass member hopper 320 in response to a signal from the control unit 40.
- the counterweight 20 becomes lighter than the elevator car 10 so that the elevator car 10 moves down but the counterweight 20 is driven upward.
- the elevator 10 is moved down by its own weight without the drive motor being supplied with electric power, thereby saving a remarkable amount of energy.
- an uninterrup table power supply can be provided at the bottom of the elevator shaft in preparation for an accident concerning elevator stability. This also can reduce the amount of power consumption and stably supply power so that the elevator system can be stably operated according to the capacity of the uninterruptable power supply in the event of a power failure.
- the elevator system of the invention is suitable for elevator systems for emergencies and observation, and high speed elevators. When used for these applications, the elevator system of the invention can save more energy and enhance safety.
- the elevator system of the invention is also applicable to a large capacity freight lift.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06798653A EP1931588A1 (en) | 2005-09-07 | 2006-09-05 | Small power elevator |
JP2008529915A JP2009506964A (en) | 2005-09-07 | 2006-09-05 | Small power elevator |
US12/065,899 US20080230322A1 (en) | 2005-09-07 | 2006-09-05 | Small Power Elevator |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20050083926 | 2005-09-07 | ||
KR10-2005-0083926 | 2005-09-07 | ||
KR10-2006-0053575 | 2006-06-14 | ||
KR1020060053575A KR100778829B1 (en) | 2005-09-07 | 2006-06-14 | Small power elevator |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007029950A1 true WO2007029950A1 (en) | 2007-03-15 |
Family
ID=37836033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2006/003508 WO2007029950A1 (en) | 2005-09-07 | 2006-09-05 | Small power elevator |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1931588A1 (en) |
WO (1) | WO2007029950A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3403985A1 (en) * | 2017-05-15 | 2018-11-21 | Aip Aps | Reel counterweight |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0725568A (en) * | 1993-07-09 | 1995-01-27 | Kajima Corp | Counter weight change system of elevator |
KR19980057283U (en) * | 1997-01-31 | 1998-10-15 | 이종수 | Elevator counterweight frame structure |
JP2000335850A (en) * | 1999-05-26 | 2000-12-05 | Hitachi Building Systems Co Ltd | Counterweight for elevator |
-
2006
- 2006-09-05 EP EP06798653A patent/EP1931588A1/en active Pending
- 2006-09-05 WO PCT/KR2006/003508 patent/WO2007029950A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0725568A (en) * | 1993-07-09 | 1995-01-27 | Kajima Corp | Counter weight change system of elevator |
KR19980057283U (en) * | 1997-01-31 | 1998-10-15 | 이종수 | Elevator counterweight frame structure |
JP2000335850A (en) * | 1999-05-26 | 2000-12-05 | Hitachi Building Systems Co Ltd | Counterweight for elevator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3403985A1 (en) * | 2017-05-15 | 2018-11-21 | Aip Aps | Reel counterweight |
WO2018210705A1 (en) * | 2017-05-15 | 2018-11-22 | Aip Aps | Reel counterweight |
Also Published As
Publication number | Publication date |
---|---|
EP1931588A1 (en) | 2008-06-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20080230322A1 (en) | Small Power Elevator | |
US7264087B2 (en) | Control of a counterweightless elevator using total mass of the elevator | |
KR101257719B1 (en) | Elevator group and method for controlling an elevator group | |
CN103663007B (en) | A kind of energy-saving traction elevator and power-economizing method thereof | |
CA1174608A (en) | Self-propelled elevator using electric linear motor as counterweight | |
US8631908B2 (en) | Elevator system and associated method including power control for operating an elevator in an emergency mode | |
KR100220165B1 (en) | Process for controlling elevator | |
US20130075199A1 (en) | Method for limiting the loading of an elevator assembly, and an elevator assembly | |
CN211310496U (en) | Non-counterweight parallel elevator system | |
CN102627205A (en) | Elevator car and counterweight automatic balancing energy-saving device with auxiliary counterweight, and control system | |
CN101195458B (en) | Elevator equilibrium system | |
WO2007029950A1 (en) | Small power elevator | |
CN101549819A (en) | Energy-conserving elevator counterbalancing method | |
KR200426849Y1 (en) | Small power elevator | |
JPH11322217A (en) | Elevator drive device | |
CN105600650A (en) | Elevator automatic counterweight energy-saving control device | |
CN101161579A (en) | A plurality of elevator without engine room parallel/group control system installed within shaft | |
CN216662320U (en) | Steel construction outer wall device of beating | |
Motiwala | Proposed design of energy saving in lift | |
Motiwala | Study of power saving mechanisms in lift | |
JP5255686B2 (en) | Elevator control method | |
KR20060040668A (en) | Control of an elevator | |
CN101481064A (en) | Elevating system and control method thereof | |
So et al. | Vertical Transportation Systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680032340.6 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2008529915 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12065899 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006798653 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008114578 Country of ref document: RU Ref document number: 2867/DELNP/2008 Country of ref document: IN |