EP1464606A1 - Elevator - Google Patents
Elevator Download PDFInfo
- Publication number
- EP1464606A1 EP1464606A1 EP01974829A EP01974829A EP1464606A1 EP 1464606 A1 EP1464606 A1 EP 1464606A1 EP 01974829 A EP01974829 A EP 01974829A EP 01974829 A EP01974829 A EP 01974829A EP 1464606 A1 EP1464606 A1 EP 1464606A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- elevator car
- elevator
- relief
- compensation chain
- 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.)
- Granted
Links
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Classifications
-
- 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
- B66B7/068—Cable weight compensating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
Definitions
- This invention relates to an elevator system and, particularly, to a safe method for restoring from an emergency mode to a normal mode in elevators having no machine room.
- Figure 3 is a sectional view of a conventional elevator system showing the structure thereof.
- 1 is an elevator car.
- 2 is a counter weight (CWT).
- 3 is a compensation chain.
- 4 is a relief weight.
- 5 is a hoist, and it is disposed on the top of the hoistway.
- 6 is a brake releasing apparatus.
- the elevator car 1 and the CWT 2 described above are connected to either end of the wire rope wound around the hoist 5.
- the compensation chain 3 is disposed such that the both ends thereof locate separately under the elevator car 1 or the CWT 2.
- the relief weight 4 is connected to the compensation chain 3 in cases such as necessitating rescues in emergencies, and adjusts the balance between the elevator car 1 weight and the CWT 2.
- the brake releasing apparatus 6 disposed on the hoist 5 releases the brake of the hoist 5.
- the brake releasing apparatus 6 of the hoist 5 is operated by remote control at the side of the landing or the like on the uppermost floor.
- the brake releasing apparatus 6 allows the brake of the hoist 5 to be manually released to cause the elevator car 1 to move upward or downward due to the unbalance between the elevator car 1 weight and the CWT 2.
- the present invention that has been made to solve the problem described above, has as its object to provide an elevator system in which restoration to a normal driving with the relief weight unintentionally failed to dismount is restrained.
- an elevator system comprises a hoist disposed on the top portion of a hoistway, a wire rope wound around a traction sheave of the hoist and provided with an elevator car at its one end and a counter weight at the other end, a compensation chain having respective ends fastened to the lower portion of the elevator car and the lower portion of the counter weight, a relief weight connectable to the compensation chain in emergencies for adjusting the balance between the elevator car and the counter weight to cause the elevator car to move, and detecting means for detecting that the relief weight is connected to the compensation chain.
- the driving of the elevator car may be suspended when said detecting means detects that the relief weight is connected to said compensation chain.
- the detecting means may comprise a light switch, which detects that the relief weight is connected to the compensation chain when the relief weight interrupts the beam of light between a light emitting section and a light receiving section of the light switch.
- the detecting means may be disposed at either the lower portion of the elevator car or the lower portion of the counter weight, and the operation of the elevator car is suspended when it detects the load of the relief weight.
- Figure 1 is a sectional view of an elevator system of Embodiment 1 of the invention showing the structure thereof.
- FIG. 7 is a light switch or a detecting means that is disposed at the bottom of the hoistway, and detects whether or not something has passed based on the occurrence or not of the interruption of beams of light running between the light emitting section and the light receiving section thereof opposing each other.
- An attempt to restore to a normal driving with a relief weight 4 remained connected to a compensation chain 3 fails because an omission to remove the relief weight 4 is revealed through the interruption of the beams of light of the light switch 7 by the relief weight 4 connected to the compensation chain 3, and this induces the suspension of the movement of an elevator car 1, thus preventing restoration to a normal driving.
- FIG. 2 is an enlarged view of an elevator system of Embodiment 2 of the invention showing the composition under the elevator car.
- 9 is a beam onto which one end of the compensation chain 3 is fastened.
- One end of the beam 9 is arranged to be rotatable about a pin 8 under the elevator car.
- 10 is a spring, and it supports the beam 9 at the other end to bear the weight of the compensation chain 3.
- 11 is a switch, and it restrains the elevator system's normal driving when the beam 9 serving as an operation lever is pulled downward. The operation lever is pulled downward when the spring 10 is compressed under the loads of the compensation chain 3 and the relief weights 4 mounted thereto.
- the integral components are disposed at the lower portion of the elevator car 1 in this embodiment, such the components may equally be disposed at the lower portion of the CWT 2.
- an elevator system comprises a hoist disposed on the top portion of a hoistway, a wire rope wound around a traction sheave of the hoist and provided with an elevator car at its one end and a counter weight at the other end, a compensation chain having respective ends fastened to the lower portion of the elevator car and the lower portion of the counter weight, a relief weight connectable to the compensation chain in emergencies for adjusting the balance between the elevator car and the counter weight to cause the elevator car to move, and detecting means for detecting that the relief weight is connected to the compensation chain, so that it is possible to prevent the relief weight from falling down on and hit the elevator machinery and tools to damage them as a consequence of unintentional failure to remove the relief weight when restoring to a normal operation.
- an elevator system of the invention is used upon providing a safe restoring method from an emergency mode to a normal mode particularly in an elevator having no machine room.
Abstract
Description
- This invention relates to an elevator system and, particularly, to a safe method for restoring from an emergency mode to a normal mode in elevators having no machine room.
- Examples of a known elevator system are disclosed in Japanese Patents Laid-Open Nos. 2000-351548 and 2000-169055, and one of such examples is shown in Figure 3. Figure 3 is a sectional view of a conventional elevator system showing the structure thereof.
- In Figure 3, 1 is an elevator car. 2 is a counter weight (CWT). 3 is a compensation chain. 4 is a relief weight. 5 is a hoist, and it is disposed on the top of the hoistway. 6 is a brake releasing apparatus.
- The
elevator car 1 and the CWT 2 described above are connected to either end of the wire rope wound around thehoist 5. Thecompensation chain 3 is disposed such that the both ends thereof locate separately under theelevator car 1 or the CWT 2. Therelief weight 4 is connected to thecompensation chain 3 in cases such as necessitating rescues in emergencies, and adjusts the balance between theelevator car 1 weight and the CWT 2. Thebrake releasing apparatus 6 disposed on thehoist 5 releases the brake of thehoist 5. Thebrake releasing apparatus 6 of thehoist 5 is operated by remote control at the side of the landing or the like on the uppermost floor. - The operation in emergencies of the conventional elevator system shown in Figure 3 is described in the following.
- If the
elevator car 1 suspends halfway between floors due to power failure or the like, for instance, elevator passengers in such emergencies are generally rescued by making thecar 1 alight on the nearest floor using thebrake releasing apparatus 6 to let the passengers get off the car. Thebrake releasing apparatus 6 allows the brake of thehoist 5 to be manually released to cause theelevator car 1 to move upward or downward due to the unbalance between theelevator car 1 weight and the CWT 2. It is not possible to make theelevator car 1 move, however, if the weight of theelevator car 1 and the CWT 2 is balanced (in such cases as where theelevator car 1 is accommodating half the nominal riding capacity), even if the brake is released, and so in such cases therelief weight 4 is mounted to thecompensation chain 3 disposed under theelevator car 1 for adjusting the balance between theelevator car 1 weight and the CWT 2 and causing an unbalance therebetween and letting theelevator car 1 move. - Thus, conventional elevator systems have a problem that relief weights, if left unremoved, could fall on and hit elevator machinery and tools to damage them after restoration to a normal driving following rescuing of elevator passengers.
- The present invention, that has been made to solve the problem described above, has as its object to provide an elevator system in which restoration to a normal driving with the relief weight unintentionally failed to dismount is restrained.
- In order to achieve the above object, an elevator system according to the invention comprises a hoist disposed on the top portion of a hoistway, a wire rope wound around a traction sheave of the hoist and provided with an elevator car at its one end and a counter weight at the other end, a compensation chain having respective ends fastened to the lower portion of the elevator car and the lower portion of the counter weight, a relief weight connectable to the compensation chain in emergencies for adjusting the balance between the elevator car and the counter weight to cause the elevator car to move, and detecting means for detecting that the relief weight is connected to the compensation chain.
- Also, acccording to the elevator system of the present invention, the driving of the elevator car may be suspended when said detecting means detects that the relief weight is connected to said compensation chain.
- Also, according to the elevator system of the present invention, the detecting means may comprise a light switch, which detects that the relief weight is connected to the compensation chain when the relief weight interrupts the beam of light between a light emitting section and a light receiving section of the light switch.
- Further, in the elevator system of the present invention, the detecting means may be disposed at either the lower portion of the elevator car or the lower portion of the counter weight, and the operation of the elevator car is suspended when it detects the load of the relief weight.
-
- Figure 1 is a sectional view of an elevator system of
exemplary embodiment 1 of the invention showing the structure thereof; - Figure 2 is an enlarged view of the compositions under the elevator car
in an elevator system of
exemplary embodiment 2 of the invention; and - Figure 3 is a sectional view of a conventional elevator system showing the structure thereof.
-
- Exemplary embodiments of the invention will be described in the following.
- An elevator system of one exemplary embodiment of the invention will now be described while referring to Figure 1. Figure 1 is a sectional view of an elevator system of
Embodiment 1 of the invention showing the structure thereof. - In Figure 1, 7 is a light switch or a detecting means that is disposed at the bottom of the hoistway, and detects whether or not something has passed based on the occurrence or not of the interruption of beams of light running between the light emitting section and the light receiving section thereof opposing each other. An attempt to restore to a normal driving with a
relief weight 4 remained connected to acompensation chain 3 fails because an omission to remove therelief weight 4 is revealed through the interruption of the beams of light of thelight switch 7 by therelief weight 4 connected to thecompensation chain 3, and this induces the suspension of the movement of anelevator car 1, thus preventing restoration to a normal driving. - In Figure 1, those components that are common in the example of a conventional elevator system shown in Figure 3 or those the counterparts thereof are found in Figure 3 are given the same reference numerals with no explanation, and the component that is not found in Figure 3 is given a new reference numeral.
- Thus, it is possible to prevent the occurrence of a situation in which the
relief weight 4 falls down on and hit the elevator machinery and tools to damage them because restoration to a normal driving with therelief weight 4 left unremoved is not possible as thelight switch 7 disposed at the bottom of the hoistway detects whether or not therelief weight 4 is connected to thecompensation chain 3 and whether or not the elevator system can be restored to a normal driving through the occurrence or not of the interruption of the beams of light running between the light emitting section and the light receiving section of thelight switch 7. - Further, it is possible to prevent the occurrence of undesirable phenomenon of generating a slip between the wire rope and the hoist sheave due to insufficient friction therebetween that could happen when the elevator is operated with the car accommodating full passengers, for example, because of the unbalance between the
elevator car 1 and theCWT 2 as a consequence of the presence of therelief weight 4 when the elevator system is restored to a normal driving by omitting the removal of therelief weight 4. - The elevator system of another exemplary embodiment of the present invention will now be described with reference to Figure 2. Figure 2 is an enlarged view of an elevator system of
Embodiment 2 of the invention showing the composition under the elevator car. - In Figure 2, 9 is a beam onto which one end of the
compensation chain 3 is fastened. One end of thebeam 9 is arranged to be rotatable about apin 8 under the elevator car. 10 is a spring, and it supports thebeam 9 at the other end to bear the weight of thecompensation chain 3. 11 is a switch, and it restrains the elevator system's normal driving when thebeam 9 serving as an operation lever is pulled downward. The operation lever is pulled downward when thespring 10 is compressed under the loads of thecompensation chain 3 and therelief weights 4 mounted thereto. - Thus, when the
switch 11 is turned on upon the downward movement of the operation lever, it is determined that therelief weights 4 are mounted on thecompensation chain 3 and the restoration of the elevator operation to a normal driving mode is prevented when therelief weights 4 are unintentionally failed to be dismounted. - Although the integral components are disposed at the lower portion of the
elevator car 1 in this embodiment, such the components may equally be disposed at the lower portion of theCWT 2. - As has been described, an elevator system according to the invention comprises a hoist disposed on the top portion of a hoistway, a wire rope wound around a traction sheave of the hoist and provided with an elevator car at its one end and a counter weight at the other end, a compensation chain having respective ends fastened to the lower portion of the elevator car and the lower portion of the counter weight, a relief weight connectable to the compensation chain in emergencies for adjusting the balance between the elevator car and the counter weight to cause the elevator car to move, and detecting means for detecting that the relief weight is connected to the compensation chain, so that it is possible to prevent the relief weight from falling down on and hit the elevator machinery and tools to damage them as a consequence of unintentional failure to remove the relief weight when restoring to a normal operation.
- As described, an elevator system of the invention is used upon providing a safe restoring method from an emergency mode to a normal mode particularly in an elevator having no machine room.
Claims (4)
- An elevator system comprising:a hoist disposed on the top portion of a hoistway;a wire rope wound around a traction sheave of said hoist and is provided with an elevator car at one end thereof and a counter weight at the other end thereof;a compensation chain having respective end thereof fastened to the lower portion of the elevator car and the lower portion of the counter weight;a relief weight connectable to said compensation chain in emergencies for adjusting the balance between the elevator car and the counter weight to cause the elevator car to move; anddetecting means for detecting that said relief weight is connected to said compensation chain.
- An elevator system as claimed in claim 1 wherein the driving of the elevator car is suspended when said detecting means detects that the relief weight is connected to said compensation chain.
- An elevator system as claimed in claim 2 wherein said detecting means comprises a light switch, which detects that the relief weight is connected to the compensation chain when the relief weight interrupts the beam of light between a light emitting section and a light receiving section of the light switch.
- An elevator system as claimed in claim 1 wherein said detecting means is disposed at either the lower portion of the elevator car or the lower portion of the counter weight, and the operation of the elevator car is suspended when it detects the load of the relief weight.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2001/008994 WO2003033389A1 (en) | 2001-10-12 | 2001-10-12 | Elevator |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1464606A1 true EP1464606A1 (en) | 2004-10-06 |
EP1464606A4 EP1464606A4 (en) | 2006-08-09 |
EP1464606B1 EP1464606B1 (en) | 2012-01-04 |
Family
ID=11737829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01974829A Expired - Lifetime EP1464606B1 (en) | 2001-10-12 | 2001-10-12 | Elevator |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1464606B1 (en) |
JP (1) | JPWO2003033389A1 (en) |
KR (1) | KR100492855B1 (en) |
CN (1) | CN1215963C (en) |
WO (1) | WO2003033389A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2072445A1 (en) * | 2007-12-21 | 2009-06-24 | Inventio Ag | Operational method for a lift with two lift cabins and a common counterweight |
BRPI0914259B1 (en) * | 2008-06-19 | 2020-01-07 | Inventio Aktiengellschaft | ELEVATOR SYSTEM AND PROCESS OF OPERATING AN ELEVATOR SYSTEM |
CN102092620A (en) * | 2011-02-21 | 2011-06-15 | 何建中 | Rope counterweight of elevator |
WO2013001639A1 (en) * | 2011-06-30 | 2013-01-03 | 三菱電機株式会社 | Cable suspending device for elevator |
CN102627205B (en) * | 2012-04-15 | 2014-02-19 | 丁国务 | Elevator car and counterweight automatic balancing energy-saving device with auxiliary counterweight, and control system |
CN104828680B (en) * | 2015-04-29 | 2017-02-01 | 优诺电梯股份有限公司 | Elevator with balanced counterweight |
WO2019105797A1 (en) | 2017-11-29 | 2019-06-06 | Inventio Ag | Elevator system, method for operating an elevator system, use of a cable, and emergency set |
JP6892835B2 (en) * | 2018-02-06 | 2021-06-23 | 株式会社日立製作所 | Emergency rescue equipment and elevator equipment |
CN108910646B (en) * | 2018-06-29 | 2019-10-01 | 洛阳点晶智控科技有限公司 | A kind of personnel in the pit's emergency gug method based on mine hoisting brake system |
JP7200807B2 (en) * | 2019-04-01 | 2023-01-10 | 三菱電機株式会社 | elevator rescue device |
EP3878789A1 (en) * | 2020-03-10 | 2021-09-15 | KONE Corporation | A method for releasing safety gears, and a stalling detector |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000318942A (en) * | 1999-05-07 | 2000-11-21 | Mitsubishi Electric Building Techno Service Co Ltd | Passenger rescue operating device and method for elevator |
JP2000351548A (en) * | 1999-06-09 | 2000-12-19 | Mitsubishi Electric Building Techno Service Co Ltd | Passenger rescue operation device and passenger rescue operation method for elevator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0549769U (en) * | 1991-12-17 | 1993-06-29 | 株式会社日立ビルシステムサービス | Anomaly detection device for elevator compensating rope |
JPH06271237A (en) * | 1993-03-18 | 1994-09-27 | Hitachi Ltd | Maintenance inspection device for elevator |
JPH0731777U (en) * | 1993-12-01 | 1995-06-16 | 株式会社日立ビルシステムサービス | Escalator notification device |
JP3281168B2 (en) * | 1994-03-18 | 2002-05-13 | 東芝エレベータ株式会社 | Lifting equipment for elevator cars |
JPH11209030A (en) * | 1998-01-30 | 1999-08-03 | Mitsubishi Electric Corp | Elevator device |
JP4278236B2 (en) * | 1999-06-23 | 2009-06-10 | 東芝エレベータ株式会社 | Vine elevator |
-
2001
- 2001-10-12 WO PCT/JP2001/008994 patent/WO2003033389A1/en active IP Right Grant
- 2001-10-12 CN CN018114644A patent/CN1215963C/en not_active Expired - Fee Related
- 2001-10-12 KR KR10-2003-7007422A patent/KR100492855B1/en not_active IP Right Cessation
- 2001-10-12 JP JP2002561449A patent/JPWO2003033389A1/en active Pending
- 2001-10-12 EP EP01974829A patent/EP1464606B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000318942A (en) * | 1999-05-07 | 2000-11-21 | Mitsubishi Electric Building Techno Service Co Ltd | Passenger rescue operating device and method for elevator |
JP2000351548A (en) * | 1999-06-09 | 2000-12-19 | Mitsubishi Electric Building Techno Service Co Ltd | Passenger rescue operation device and passenger rescue operation method for elevator |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 14, 5 March 2001 (2001-03-05) -& JP 2000 318942 A (MITSUBISHI ELECTRIC BUILDING TECHNO SERVICE CO LTD), 21 November 2000 (2000-11-21) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15, 6 April 2001 (2001-04-06) -& JP 2000 351548 A (MITSUBISHI ELECTRIC BUILDING TECHNO SERVICE CO LTD), 19 December 2000 (2000-12-19) * |
See also references of WO03033389A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1464606A4 (en) | 2006-08-09 |
JPWO2003033389A1 (en) | 2005-02-03 |
KR100492855B1 (en) | 2005-05-31 |
EP1464606B1 (en) | 2012-01-04 |
CN1215963C (en) | 2005-08-24 |
WO2003033389A1 (en) | 2003-04-24 |
CN1444538A (en) | 2003-09-24 |
KR20030059308A (en) | 2003-07-07 |
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