EP2058261B1 - Elevator apparatus - Google Patents
Elevator apparatus Download PDFInfo
- Publication number
- EP2058261B1 EP2058261B1 EP06833965.4A EP06833965A EP2058261B1 EP 2058261 B1 EP2058261 B1 EP 2058261B1 EP 06833965 A EP06833965 A EP 06833965A EP 2058261 B1 EP2058261 B1 EP 2058261B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- braking
- controlling means
- hoisting machines
- brake controlling
- deceleration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes
-
- 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
-
- 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
-
- 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
-
- 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 an elevator apparatus that raises and lowers a single car by a plurality of hoisting machines.
- patent literature 3 discloses a brake controlling means which controls braking apparatuses by detecting running states of the car upon emergency braking and controls braking forces from braking apparatuses of the hoisting machines in response to the detected running state.
- Patent literature WO2006/092967A1 discloses the preamble of claim 1 and claim 3.
- the present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus that can decelerate and stop a plurality of hoisting machines more appropriately during emergency braking.
- an elevator apparatus particularly including: a plurality of hoisting machines that have respective braking apparatuses; a car that is raised and lowered by the hoisting machines; and a plurality of brake controlling means that control the respective braking apparatuses individually, wherein the respective brake controlling means detect states of rotation of the respective hoisting machines during emergency braking, and control braking forces from the respective braking apparatuses in response to the detected states of rotation.
- an elevator apparatus including: a plurality of hoisting machines that have respective braking apparatuses; a car that is raised and lowered by the hoisting machines; and a brake controlling means that controls the braking apparatuses, wherein the brake controlling means detects a state of rotation of any one of the hoisting machines during emergency braking, and controls braking forces from at least two of the braking apparatuses of the hoisting machines in response to the detected state of rotation.
- an elevator apparatus including: a plurality of hoisting machines that have respective braking apparatuses; a car that is raised and lowered by the hoisting machines; and a brake controlling means that controls the braking apparatuses, wherein the brake controlling means detects a running state of the car during emergency braking, and controls braking forces from at least two of the braking apparatuses of the hoisting machines in response to the detected running state.
- an elevator apparatus including: a plurality of hoisting machines that have respective braking apparatuses; a car that is raised and lowered by the hoisting machines; a brake controlling means that controls the braking apparatuses; and an emergency stop detecting means that detects generation of an emergency stop command, wherein: the emergency stop detecting means immediately makes the braking apparatus of at least one of the hoisting machines perform a braking action by disconnection from the brake controlling means when generation of an emergency stop command is detected; and the brake controlling means controls a braking force from the braking apparatus of at least one of the hoisting machines that is subject to control during emergency braking such that deceleration of the hoisting machine that is subject to control is at a predetermined rate of deceleration.
- FIG 1 is a structural diagram that shows an elevator apparatus according to Embodiment 1 not part of the present invention.
- a car 1 and a counterweight 2 are suspended inside a hoistway by a suspending means 3, and are raised and lowered by driving forces from first and second hoisting machines 4 and 5.
- the suspending means 3 includes at least one first main rope 6 and at least one second main rope 7.
- Ropes that have a circular cross section or belt-shaped ropes can be used as the first and second main ropes 6 and 7.
- the first hoisting machine 4 has: a first drive sheave 8; a first motor 9 that rotates the first drive sheave 8; a first brake wheel 10 that is rotated together with the first drive sheave 8; and a first braking apparatus 11 that brakes rotation of the first brake wheel 10 and the first drive sheave 8.
- the first braking apparatus 11 has: a first brake shoe that can be placed in contact with and separated from the first brake wheel 10; a first brake spring that presses the first brake shoe against the first brake wheel 10; and a first electromagnet that acts against the first brake spring so as to separate the first brake shoe from the first brake wheel 10.
- a first electromagnetic coil is disposed on the first electromagnet.
- the second hoisting machine 5 has: a second drive sheave 12; a second motor 13 that rotates the second drive sheave 12; a second brake wheel 14 that is rotated together with the second drive sheave 12; and a second braking apparatus 15 that brakes rotation of the second brake wheel 14 and the second drive sheave 12.
- the second braking apparatus 15 has: a second brake shoe that can be placed in contact with and separated from the second brake wheel 14; a second brake spring that presses the second brake shoe against the second brake wheel 14; and a second electromagnet that acts against the second brake spring so as to separate the second brake shoe from the second brake wheel 14.
- a second electromagnetic coil is disposed on the second electromagnet.
- the first main rope 6 is wound around the first drive sheave 8.
- the second main rope 7 is wound around the second drive sheave 12.
- Brake disks, or brake drums, etc. can be used as the first and second brake wheels 10 and 14, for example.
- a first speed detector 16 is disposed on the first motor 9.
- a signal from the first speed detector 16 is input into a first brake controlling means 17.
- the first brake controlling means 17 controls the first braking apparatus 11 based on the signal from the first speed detector 16. Specifically, the first brake controlling means 17 energizes and de-energizes the first electromagnetic coil of the first braking apparatus 11 in response to the signal from the first speed detector 16.
- a second speed detector 18 is disposed on the second motor 13.
- a signal from the second speed detector 18 is input into a second brake controlling means 19.
- the second brake controlling means 19 controls the second braking apparatus 15 based on the signal from the second speed detector 18. Specifically, the second brake controlling means 19 energizes and de-energizes the second electromagnetic coil of the second braking apparatus 15 in response to the signal from the second speed detector 18.
- Figure 2 is a graph that shows time variations of rotational speed, deceleration, an energizing command to an electromagnetic coil, and current in the electromagnetic coil during emergency braking of one of the hoisting machines 4 and 5 from Figure 1 .
- a command to make the car 1 stop urgently (an emergency stop command) is generated, electric current to the motors 9 and 13 is interrupted and the electromagnetic coils of the braking apparatuses 11 and 15 are also de-energized. If deceleration ⁇ exceeds a predetermined value (threshold value) ⁇ 0 at time T1, the brake controlling means 17 and 19 switch on energizing commands to the electromagnetic coils. Thus, braking force from the braking apparatuses 11 and 15 is reduced, reducing deceleration ⁇ .
- the brake controlling means 17 and 19 switch off the energizing commands to the electromagnetic coils.
- the braking force from the braking apparatuses 11 and 15 is increased, increasing the deceleration ⁇ .
- the first and second brake controlling means 17 and 19 execute such switching on and off as energizing commands independently from each other until time T3 when the first and second hoisting machines 4 and 5 stop.
- the first and second hoisting machines 4 and 5 are decelerated and stopped at a rate of deceleration close to the predetermined deceleration ⁇ 0.
- the brake controlling means 17 and 19 detect the state of rotation of the respective hoisting machines 4 and 5, i.e., deceleration, during emergency braking, and control the braking force from the respective braking apparatuses 11 and 15 in response to the detected deceleration, the hoisting machines 4 and 5 can be decelerated and stopped more appropriately during emergency braking.
- FIG. 3 is a structural diagram that shows an elevator apparatus according to Embodiment 2 of the present invention.
- an emergency stop detecting means 20 is connected to first and second brake controlling means 17 and 19.
- the emergency stop detecting means 20 detects generation of an emergency stop command, and activates control of the braking forces from the first and second brake controlling means 17 and 19 synchronously.
- the rest of the configuration is similar to that of Embodiment 1.
- Embodiment 3 of the present invention will be explained.
- deceleration of the hoisting machines 4 and 5 was detected by the brake controlling means 17 and 19, but in Embodiment 3, rotational speed of the hoisting machines 4 and 5 is detected.
- the brake controlling means 17 and 19 generate control target speeds for deceleration at a predetermined rate of deceleration using the rotational speeds of the respective hoisting machines 4 and 5 during emergency stop command generation as initial values, and control the braking force from the braking apparatuses 11 and 15 of the respective hoisting machines 4 and 5 in such a way that the rotational speeds of the respective hoisting machines 4 and 5 follow the control target speeds.
- the rest of the configuration is similar to that of Embodiment 2.
- Figure 4 is a graph that shows time variations of rotational speed, an energizing command to an electromagnetic coil, and current in the electromagnetic coil during emergency braking of one of the hoisting machines 4 and 5 from Figure 3 .
- time T1 is the time at which the generation of the emergency stop command is detected, and the rotational speed of the hoisting machines 4 and 5 at that time is V0.
- the brake controlling means 17 and 19 perform the following calculations, where ⁇ V1 are upper and lower limit values of control speed, ⁇ is a predetermined rate of deceleration, and t is elapsed time from time T1:
- V 2 t V 0 + V 1 ⁇ ⁇ ⁇ t
- V 3 t V 0 ⁇ V 1 ⁇ ⁇ ⁇ t
- Expression 1 above is a control target speed pattern that constitutes an upper limit
- Expression 2 is a control target speed pattern that constitutes a lower limit.
- the brake controlling means 17 and 19 compare the rotational speeds V(t) of the hoisting machines 4 and 5 at that time and the control target speed pattern, and energize the electromagnetic coils if V(t) is less than or equal to V3(t). If V(t) is greater than or equal to V2(t), the electromagnetic coils are de-energized.
- the hoisting machines 4 and 5 can be decelerated and stopped at a deceleration in a vicinity of the predetermined rate of deceleration ⁇ .
- the hoisting machines 4 and 5 can also be decelerated and stopped during emergency braking more appropriately by controlling braking force in response to rotational speeds of the hoisting machines 4 and 5 instead of deceleration.
- FIG. 5 is a structural diagram that shows an elevator apparatus according to Embodiment 4 not part of the present invention.
- braking apparatuses 11 and 15 are controlled by a shared brake controlling means 21.
- the brake controlling means 21 detects deceleration of the second hoisting machine 5 during emergency braking, and controls braking force from the first and second braking apparatuses 11 and 15 in response to the detected deceleration.
- the specific method for controlling the braking force is similar to that of Embodiment 1.
- the brake controlling means 21 detects deceleration of the second hoisting machine 5 during emergency braking, and controls the braking force from the braking apparatuses 11 and 15 in response to the detected deceleration, the hoisting machines 4 and 5 can be decelerated and stopped more appropriately during emergency braking. Because one brake controlling means 21 is used for the first and second hoisting machines 4 and 5, the number of brake controlling means 21 and speed detectors 18 can be reduced, thereby enabling costs to be reduced.
- the braking forces from the braking apparatuses 11 and 15 are controlled by detecting deceleration of the second hoisting machine 5, but the braking forces from the braking apparatuses 11 and 15 may also be controlled in response to the rotational speed of the second hoisting machine 5, as shown in Embodiment 3.
- FIG. 6 is a structural diagram that shows an elevator apparatus according to Embodiment 5 not part of the present invention.
- braking apparatuses 11 and 15 are controlled by a shared brake controlling means 22.
- the brake controlling means 22 detects deceleration that constitutes a running state of a car 1 during emergency braking, and controls braking force from the first and second braking apparatuses 11 and 15 in response to the detected deceleration.
- the specific method for controlling the braking force is similar to that of Embodiment 1.
- the brake controlling means 22 detects the deceleration of the car 1 based on a signal from a speed detector 23 that generates a signal that corresponds to the speed of the car 1.
- the speed detector 23 can be disposed on a speed governor 24, for example.
- a counterweight is divided into: a first counterweight 2a that is suspended by a first main rope 6; and a second counterweight 2b that is suspended by a second main rope 7.
- the brake controlling means 22 detects deceleration of the car 1 during emergency braking, and controls the braking force from the braking apparatuses 11 and 15 in response to the detected deceleration, the hoisting machines 4 and 5 can be decelerated and stopped more appropriately during emergency braking.
- the braking forces from the braking apparatuses 11 and 15 are controlled by detecting deceleration of the car 1, but the braking forces from the braking apparatuses 11 and 15 may also be controlled in response to a running speed of the car 1 that constitutes a running state of the car 1.
- the brake controlling means 22 generates a control target speed for deceleration at a predetermined rate of deceleration using the running speed of the car 1 during emergency stop command generation as an initial value, and controls the braking force from the braking apparatuses 11 and 15 in such a way that the running speed of the car 1 follows the control target speed.
- Figure 7 is a structural diagram that shows an elevator apparatus according to Embodiment 6 not part of the present invention.
- braking apparatuses 11 and 15 are controlled by a shared brake controlling means 21.
- a braking control stopping means (a switch) 25 is disposed between the brake controlling means 21 and the first braking apparatus 11.
- An emergency stop detecting means 26 is connected to the brake controlling means 21 and the braking control stopping means 25.
- the emergency stop detecting means 26 detects generation of an emergency stop command, and activates control of the braking force from the brake controlling means 21, and immediately activates braking by disconnecting the first braking apparatus 11 from the brake controlling means 21.
- the brake controlling means 21 controls braking force from the second braking apparatus 15 that is subject to control such that deceleration of the second hoisting machine 5 that is subject to control is at predetermined rate of deceleration.
- Embodiment 6 a method in which the hoisting machine 4 is immediately made to perform a braking action while controlling deceleration of the hoisting machine 5 has been chosen as an appropriate decelerating and stopping method for the hoisting machines 4 and 5 during emergency braking. Consequently, using a control method of this kind, the hoisting machines 4 and 5 can be decelerated and stopped more appropriately during emergency braking.
- FIG. 8 is a structural diagram that shows an elevator apparatus according to Embodiment 7 of the present invention.
- Embodiment 7 is a combination of Embodiments 5 and 6.
- a braking control stopping means 25 is disposed between a brake controlling means 22 according to Embodiment 5 and a first braking apparatus 11, and is configured such that the first braking apparatus 11 is disconnected from the brake controlling means 22 by the emergency stop detecting means 26 during emergency braking.
- the hoisting machines 4 and 5 can also be decelerated and stopped more appropriately during emergency braking by an elevator apparatus of this kind.
- the brake controlling means can be configured using a circuit that includes a microcomputer, for example.
- the generation of the emergency stop command may also be detected using a signal from an elevator control apparatus, or may also be independently detected by a brake controlling means. Approach or contact of a brake shoe toward or with a brake wheel, for example, may also be detected to determine whether an emergency stop command has been generated. It may also be determined that the emergency stop command has been generated if an electric current value of an electromagnetic coil of a braking apparatus is less than a predetermined value despite the speed of the car being greater than or equal to a predetermined value.
- deceleration or speed was detected using a signal from a speed detector that is disposed on a hoisting machine or a speed governor, but a signal from a car speed sensor that is disposed on a car or a hoistway may also be used.
- the brake controlling means may perform both braking control during normal operation and braking control during emergency stop command generation, or may also perform only braking control during the emergency stop command generation. In the latter case, braking control during normal operation can be performed by a running controlling means, and a brake controlling means that is independent from the running controlling means can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Elevator Control (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/324210 WO2008068839A1 (ja) | 2006-12-05 | 2006-12-05 | エレベータ装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2058261A1 EP2058261A1 (en) | 2009-05-13 |
EP2058261A4 EP2058261A4 (en) | 2013-04-17 |
EP2058261B1 true EP2058261B1 (en) | 2018-03-07 |
Family
ID=39491759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06833965.4A Expired - Fee Related EP2058261B1 (en) | 2006-12-05 | 2006-12-05 | Elevator apparatus |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2058261B1 (ko) |
JP (1) | JP5172695B2 (ko) |
KR (1) | KR101080601B1 (ko) |
CN (1) | CN101522553B (ko) |
WO (1) | WO2008068839A1 (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009128139A1 (ja) * | 2008-04-15 | 2009-10-22 | 三菱電機株式会社 | エレベータ装置 |
JP2010110080A (ja) * | 2008-10-29 | 2010-05-13 | Okuma Corp | モータ制御装置 |
WO2010107423A1 (en) * | 2009-03-16 | 2010-09-23 | Otis Elevator Company | Arrangement of elevator machines |
CN102325713A (zh) * | 2009-04-03 | 2012-01-18 | 三菱电机株式会社 | 电梯装置 |
DE102010038432A1 (de) * | 2010-07-26 | 2012-01-26 | Thyssenkrupp Aufzugswerke Gmbh | Aufzugsteuereinrichtung |
CN108290705A (zh) * | 2015-11-02 | 2018-07-17 | 因温特奥股份公司 | 电梯的交错制动 |
CN105460730A (zh) * | 2016-01-14 | 2016-04-06 | 张明 | 一种用于曳引式电梯的监控制动***及方法 |
DE102019200375A1 (de) * | 2019-01-15 | 2020-07-16 | Thyssenkrupp Ag | Aufzugsanlage mit einer ersten Aufhängung und einer zweiten Aufhängung an einem Fahrkorb |
CN113415701A (zh) * | 2021-08-02 | 2021-09-21 | 美迪斯电梯有限公司 | 一种双驱动电梯 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0742063B2 (ja) | 1992-07-17 | 1995-05-10 | 三菱電機株式会社 | エレベータ駆動システム |
JPH08198542A (ja) * | 1995-01-30 | 1996-08-06 | Otis Elevator Co | 制動力調節装置付エレベーター |
DE59606928D1 (de) * | 1995-03-10 | 2001-06-28 | Inventio Ag | Einrichtung und Verfahren zur Schwingungsdämpfung an einer Aufzugskabine |
JP4513176B2 (ja) * | 2000-06-22 | 2010-07-28 | 三菱電機株式会社 | エレベータの制御装置 |
CN1241816C (zh) * | 2001-04-10 | 2006-02-15 | 三菱电机株式会社 | 电梯导向装置 |
JP4107480B2 (ja) * | 2002-07-29 | 2008-06-25 | 三菱電機株式会社 | エレベータの振動低減装置 |
US6802395B1 (en) * | 2003-03-28 | 2004-10-12 | Kone Corporation | System for control and deceleration of elevator during emergency braking |
DE602004031468D1 (de) * | 2004-07-12 | 2011-03-31 | Mitsubishi Electric Corp | Steuersystem für aufzug |
JP4580749B2 (ja) * | 2004-12-20 | 2010-11-17 | 株式会社日立製作所 | エレベータシステム |
JPWO2006092967A1 (ja) * | 2005-03-01 | 2008-08-07 | 三菱電機株式会社 | エレベータ装置 |
US20100018810A1 (en) * | 2005-03-01 | 2010-01-28 | Mitsubishi Electric Corporation | Elevator apparatus |
-
2006
- 2006-12-05 CN CN2006800560897A patent/CN101522553B/zh not_active Expired - Fee Related
- 2006-12-05 KR KR1020097006786A patent/KR101080601B1/ko active IP Right Grant
- 2006-12-05 JP JP2008548128A patent/JP5172695B2/ja not_active Expired - Fee Related
- 2006-12-05 EP EP06833965.4A patent/EP2058261B1/en not_active Expired - Fee Related
- 2006-12-05 WO PCT/JP2006/324210 patent/WO2008068839A1/ja active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
KR101080601B1 (ko) | 2011-11-04 |
EP2058261A1 (en) | 2009-05-13 |
JP5172695B2 (ja) | 2013-03-27 |
WO2008068839A1 (ja) | 2008-06-12 |
JPWO2008068839A1 (ja) | 2010-03-11 |
CN101522553B (zh) | 2012-02-01 |
KR20090057084A (ko) | 2009-06-03 |
CN101522553A (zh) | 2009-09-02 |
EP2058261A4 (en) | 2013-04-17 |
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