USRE37976E1 - Winding machine stopping method - Google Patents

Winding machine stopping method Download PDF

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Publication number
USRE37976E1
USRE37976E1 US09/454,171 US45417199A USRE37976E US RE37976 E1 USRE37976 E1 US RE37976E1 US 45417199 A US45417199 A US 45417199A US RE37976 E USRE37976 E US RE37976E
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United States
Prior art keywords
speed
command
electric motor
zero
brake
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Expired - Lifetime
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US09/454,171
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English (en)
Inventor
Kazuhiko Hiramatsu
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Yaskawa Electric Corp
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Yaskawa Electric Corp
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Publication date
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Application filed by Yaskawa Electric Corp filed Critical Yaskawa Electric Corp
Priority to US09/454,171 priority Critical patent/USRE37976E1/en
Application granted granted Critical
Publication of USRE37976E1 publication Critical patent/USRE37976E1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/22—Control systems or devices for electric drives
    • B66C13/23—Circuits for controlling the lowering of the load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/42—Control devices non-automatic
    • B66D1/46—Control devices non-automatic electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/30—Operating devices electrical

Definitions

  • the present invention relates to a method of stopping a winding machine which is used for winching a crane rope up and down.
  • Winding machines which use electric motors for driving and electromagnetic brakes for stopping, manage the critical timing of the operation of the motor and electromagnetic brake during the transition from working to stopping.
  • Winding machines which use electric motors for driving and electromagnetic brakes for stopping, manage the critical timing of the operation of the motor and electromagnetic brake during the transition from working to stopping.
  • the crane rope will temporarily be in a no-torque state, resulting in the dangerous descent of the load.
  • FIG. 1 is a block diagram of the control circuit of this prior art
  • FIG. 2 is the timing chart at stopping.
  • a winch induction motor M 1 has its output shaft coupled at one end to a drum of an electromagnetic brake MB and at another end to a winch drum D through a reduction gear G.
  • a variable-voltage, variable-frequency inverter I 1 Connected between a primary winding of the induction motor M 1 and the power source is a variable-voltage, variable-frequency inverter I 1 . which is also connected to the electromagnetic brake MB by way of a brake controller BC.
  • the electromagnetic brake is activated during the rotation of the motor, and therefore has the problem of prematurely wearing the electromagnetic brake.
  • Another problem is that the control ceases at time is when the speed command N REF reaches zero, causing the current command to become zero, even if the electromagnetic brake is not activated, in which case the descent of the load will occur.
  • an object of the present invention is to prevent abrasion of the electromagnetic brake and the descent of the load.
  • the inventive method of stopping a winding machine which operates to winch a load up or down in response to a torque command applied to an electric motor and produced by a speed controller in accordance with a speed command generated by a speed command generation circuit, the method comprising the steps of: decreasing the speed command to the motor to zero for a predetermined length of time at the stopping of the motor, thereby the torque command to the motor is controlled to zero; braking the motor by issuing a brake command to an electromagnetic brake which is coupled directly to the motor after the motor speed N FB detected by the speed detector is zero and turning off a power supply to the motor if the motor speed N FB detected by the speed detector is zero.
  • the motor does not rotate when the torque command is reduced to zero for a predetermined length of time following the activation of the electromagnetic brake after the motor has stopped completely based on the operation of the above-mentioned means, it can be judged that the electromagnetic brake is producing a torque sufficient to withstand the load at that time, and therefore the descent of load can be prevented even in the absence of the motor control.
  • the brake will incur abrasion and the descent of load is prevented.
  • FIG. 1 is a schematic diagram showing the arrangement of a conventional winding machine
  • FIG. 2 is a timing chart used to explain the operation at the stopping of the winding machine
  • FIG. 3 is a block diagram showing the principal arrangement of an embodiment of this invention of a method of stopping of a winding machine
  • FIG. 4 is a timing chart used to explain the operation of this embodiment.
  • FIG. 5 is a flowchart of the control sequence for the brake command generation circuit based on this invention.
  • reference symbol M denotes an induction motor.
  • a difference in the speed N FB Of the induction motor M detected by a speed detector PG, such as a pulse tachogenerator, from a speed command N REF produced by a speed command generation circuit NRC is fed to a speed controller ASR.
  • a torque command limit circuit TLIM which limits a torque command value, produces a torque command TREF which is fed to a vector-control inverter INV, for driving the induction motor M.
  • a stop command SR and the motor speed N FB detected by the speed detector PG, are fed to a brake command generation circuit BRC which issues a brake command BR to an electromagnetic brake B.
  • the speed command generation circuit NRC produces a decreasing speed command N REF , and the motor speed N FB falls accordingly.
  • the brake command generation circuit BRC issues a brake command BR to the electromagnetic brake B at time t 3 , and it operates accordingly. Since the electromagnetic brake B operates in the state of zero motor speed N FB , it does not suffer any abrasion. A time period from t 3 to t 4 allows for the delay in operation of the electromagnetic brake B.
  • Torque command limit circuit TLIM reduces the torque command TREF to zero within a time period from t, to t 5 .
  • the motor speed N FB remains at zero at a zero torque command, indicative of the generation by the electromagnetic brake B of a braking torque which withstands the load, the descent of the load will not occur even though the the power supply to the induction motor has been turned off. Accordingly, the the power supply to the induction motor can be stopped at time t 5 .
  • FIG. 5 shows the control sequence of braking implemented by the brake command generation circuit BRC.
  • the circuit BRC receives a stop command SR (step 100 )
  • it monitors the motor speed N FB (step 110 )
  • the brake command generation circuit BRC issues a brake command BR to the electromagnetic brake B to thereby activate it (step 140 ).
  • the present invention can be applied to the field of winding machines used for overhead traveling cranes in various plants and storage yards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Control And Safety Of Cranes (AREA)
  • Stopping Of Electric Motors (AREA)
  • Control Of Ac Motors In General (AREA)
US09/454,171 1994-06-22 1995-06-21 Winding machine stopping method Expired - Lifetime USRE37976E1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/454,171 USRE37976E1 (en) 1994-06-22 1995-06-21 Winding machine stopping method

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP14053194A JP3834073B2 (ja) 1994-06-22 1994-06-22 巻上・巻下機の停止方法
JP6-140531 1994-06-22
PCT/JP1995/001238 WO1995035254A1 (fr) 1994-06-22 1995-06-21 Procede d'arret d'une machine d'enroulement
US09/454,171 USRE37976E1 (en) 1994-06-22 1995-06-21 Winding machine stopping method
US08/596,261 US5692733A (en) 1994-06-22 1995-06-21 Winding machine stopping method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US08/596,261 Reissue US5692733A (en) 1994-06-22 1995-06-21 Winding machine stopping method

Publications (1)

Publication Number Publication Date
USRE37976E1 true USRE37976E1 (en) 2003-02-04

Family

ID=15270840

Family Applications (2)

Application Number Title Priority Date Filing Date
US08/596,261 Ceased US5692733A (en) 1994-06-22 1995-06-21 Winding machine stopping method
US09/454,171 Expired - Lifetime USRE37976E1 (en) 1994-06-22 1995-06-21 Winding machine stopping method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US08/596,261 Ceased US5692733A (en) 1994-06-22 1995-06-21 Winding machine stopping method

Country Status (7)

Country Link
US (2) US5692733A (fi)
EP (1) EP0720963B1 (fi)
JP (1) JP3834073B2 (fi)
CN (1) CN1037257C (fi)
DE (1) DE69511674T2 (fi)
FI (1) FI111625B (fi)
WO (1) WO1995035254A1 (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7190146B1 (en) * 2003-08-18 2007-03-13 Magnetek, Inc. Control system and method for an overhead bridge crane
US20100158616A1 (en) * 2008-12-24 2010-06-24 Nippon Sharyo, Ltd. Pile Driver
US20180183363A1 (en) * 2016-12-28 2018-06-28 Mabuchi Motor Co., Ltd. Control device and method for controlling the same

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
JP2001346400A (ja) * 2000-06-01 2001-12-14 Matsushita Electric Ind Co Ltd モータブレーキ解除装置
DE10203375A1 (de) * 2002-01-29 2003-08-14 Siemens Ag Verfahren zum Halten eines Maschinenelements und/oder einer mit diesen verbundenen Last
US7004456B2 (en) * 2002-10-03 2006-02-28 Key Energy Services, Inc. Engine speed limiter for a hoist
US7063306B2 (en) * 2003-10-01 2006-06-20 Paccar Inc Electronic winch monitoring system
GB0617980D0 (en) * 2006-09-08 2006-10-18 Siemens Plc Motor electromagnetic brake control with fast current decay
US9099148B2 (en) * 2012-03-30 2015-08-04 Oracle International Corporation Magnetic Z-directional clutch
CN102677631A (zh) * 2012-05-02 2012-09-19 广东省源天工程公司 一种混凝土振捣设备及边坡混凝土施工方法
CN102730567B (zh) * 2012-07-09 2014-04-16 中联重科股份有限公司 起升控制设备、方法、系统以及起重机
WO2014112044A1 (ja) * 2013-01-16 2014-07-24 三井造船株式会社 荷役時間を短縮する港湾荷役機器の制御方法と港湾荷役機器
CN103332622B (zh) * 2013-07-02 2016-07-13 中科华核电技术研究院有限公司 核燃料组件转运用电动葫芦
CN103496651A (zh) * 2013-10-17 2014-01-08 昆明泰德威机电设备有限公司 闸门卷扬机下降过程中关门零点位确定方法及装置
CN104192750B (zh) * 2014-08-27 2016-07-06 安徽广德昌立制动器有限公司 通用型电梯制动器调压控制电路
DE102015218300B4 (de) 2015-09-23 2019-10-31 Flender Gmbh Motorbetriebener Kranantrieb, Verfahren zu dessen Betrieb, und Steuergerät
US10144623B2 (en) * 2016-07-21 2018-12-04 Ace World Companies, Ltd. Brake failure in variable frequency drive motors
US10501293B2 (en) 2017-01-31 2019-12-10 Goodrich Aerospace Services Private Limited Method of applying brake to a hoist by electromagnetic means in a permanent magnet motor
CN108975192B (zh) * 2018-09-28 2020-07-17 中国人民解放军火箭军工程大学 一种双制动电动葫芦故障应急载荷安全释放系统及方法
US11199049B2 (en) * 2019-02-14 2021-12-14 Tie Down, Inc. Winch utility
WO2022159640A1 (en) * 2021-01-20 2022-07-28 Allied Motion Technologies Inc. Systems and methods for power management for a winch

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US4087078A (en) * 1976-04-14 1978-05-02 Hitachi, Ltd. Moving apparatus for a load
JPS5552894A (en) * 1978-10-14 1980-04-17 Mitsubishi Electric Corp Hoist halt controller
JPS5593798A (en) * 1979-01-08 1980-07-16 Mitsubishi Electric Corp Jack gear
US4276498A (en) * 1977-12-09 1981-06-30 Brown & Root, Inc. Adjustable torque control winch system
JPS59124690A (ja) * 1982-12-27 1984-07-18 日立機電工業株式会社 移動走行体の巻上下制御方法
JPS62239898A (ja) * 1986-04-10 1987-10-20 Yaskawa Electric Mfg Co Ltd クレ−ン用ｖ／ｆインバ−タ制御方法
US5398911A (en) * 1991-11-15 1995-03-21 Pace Engineering Pty. Limited Winch assembly

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JPS51131044A (en) * 1975-05-09 1976-11-15 Hitachi Ltd Ac elevator controlling device
JPS5244712U (fi) * 1975-09-25 1977-03-30
US4207508A (en) * 1977-04-14 1980-06-10 Habisohn Victor J Variable speed motor control system
CH660173A5 (de) * 1982-05-03 1987-03-31 Inventio Ag Antriebssteuerung fuer einen aufzug.
JPH0780650B2 (ja) * 1990-08-13 1995-08-30 日本オーチス・エレベータ株式会社 エレベータ制御装置のブレーキ制御方式
US5343134A (en) * 1993-05-03 1994-08-30 Harnischfeger Corporation Method for checking brake torque

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Publication number Priority date Publication date Assignee Title
US4087078A (en) * 1976-04-14 1978-05-02 Hitachi, Ltd. Moving apparatus for a load
US4276498A (en) * 1977-12-09 1981-06-30 Brown & Root, Inc. Adjustable torque control winch system
JPS5552894A (en) * 1978-10-14 1980-04-17 Mitsubishi Electric Corp Hoist halt controller
JPS5593798A (en) * 1979-01-08 1980-07-16 Mitsubishi Electric Corp Jack gear
JPS59124690A (ja) * 1982-12-27 1984-07-18 日立機電工業株式会社 移動走行体の巻上下制御方法
JPS62239898A (ja) * 1986-04-10 1987-10-20 Yaskawa Electric Mfg Co Ltd クレ−ン用ｖ／ｆインバ−タ制御方法
US5398911A (en) * 1991-11-15 1995-03-21 Pace Engineering Pty. Limited Winch assembly

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D. Ernst, D. Ströle, Industrieelektronik, "Hochwertiger Vierquadrantenantrieb mit Pulsuinrichter," pp. 208-210 (1973) (with translation) (complete date unavailable).
Siemens/Katalog DA 66.2 "Spannungszwischenkreis-Umrichter Simovert P für drehzahlveränderbare Drehstromantriebe" (1991/92) (with translation) (complete date unavailable).

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7190146B1 (en) * 2003-08-18 2007-03-13 Magnetek, Inc. Control system and method for an overhead bridge crane
US20100158616A1 (en) * 2008-12-24 2010-06-24 Nippon Sharyo, Ltd. Pile Driver
US8636082B2 (en) * 2008-12-24 2014-01-28 Nippon Sharyo, Ltd. Pile driver
US20180183363A1 (en) * 2016-12-28 2018-06-28 Mabuchi Motor Co., Ltd. Control device and method for controlling the same

Also Published As

Publication number Publication date
US5692733A (en) 1997-12-02
DE69511674T2 (de) 1999-12-23
JP3834073B2 (ja) 2006-10-18
FI960792A0 (fi) 1996-02-21
EP0720963A1 (en) 1996-07-10
WO1995035254A1 (fr) 1995-12-28
EP0720963A4 (en) 1996-11-20
CN1037257C (zh) 1998-02-04
JPH082884A (ja) 1996-01-09
DE69511674D1 (de) 1999-09-30
CN1129931A (zh) 1996-08-28
FI960792A (fi) 1996-04-15
EP0720963B1 (en) 1999-08-25
FI111625B (fi) 2003-08-29

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