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KR900009422A - Variable Speed Electric Hoist - Google Patents

Variable Speed Electric Hoist Download PDF

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Publication number
KR900009422A
KR900009422A KR1019890008397A KR890008397A KR900009422A KR 900009422 A KR900009422 A KR 900009422A KR 1019890008397 A KR1019890008397 A KR 1019890008397A KR 890008397 A KR890008397 A KR 890008397A KR 900009422 A KR900009422 A KR 900009422A
Authority
KR
South Korea
Prior art keywords
brake
inverter
rotation
electric hoist
amount
Prior art date
Application number
KR1019890008397A
Other languages
Korean (ko)
Other versions
KR940001098B1 (en
Inventor
요지 나까무라
Original Assignee
시끼 모리야
미쯔비시 덴끼 가부시기가이샤
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 시끼 모리야, 미쯔비시 덴끼 가부시기가이샤 filed Critical 시끼 모리야
Publication of KR900009422A publication Critical patent/KR900009422A/en
Application granted granted Critical
Publication of KR940001098B1 publication Critical patent/KR940001098B1/en

Links

Classifications

    • 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
    • B66D1/54—Safety gear
    • B66D1/58—Safety gear responsive to excess of load
    • 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
    • B66C13/26—Circuits for controlling the lowering of the load by AC motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/02—Details of stopping control
    • H02P3/04—Means for stopping or slowing by a separate brake, e.g. friction brake or eddy-current brake

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control And Safety Of Cranes (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

내용 없음.No content.

Description

가변속형 전기 호이스트Variable Speed Electric Hoist

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본원 발명의 일실시예를 나타내는 회로도, 제2도는 그 동작특성도, 제3도는 그 동작을 나타내는 플로챠트.1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is an operation characteristic diagram, and FIG. 3 is a flowchart showing the operation.

Claims (2)

호이스팅모터의 회전속도의 제어를 인버터유니트에 의한 주파수 제어로 행하는 전기호이스트에 있어서, 상기 인버터가 3상 교류를 상기 호이스팅모터에 출력하고 있는 동안, 상기 인버터에서 출력되는 지령에 의거하여 브레이크를 개방시키는 브레이크 개폐수단 및 감아올리고 내리는 지시를 정지한 후에 있어서 상기 인버터에서 출력되는 지령이 정지하지 않을 경우, 이것을 검출하여 상기 브레이크를 폐성(閉成)시키는 브레이크 비상폐성수단을 구비한 가변속형 전기호이스트.In an electric hoist in which the rotation speed of a hoisting motor is controlled by frequency control by an inverter unit, while the inverter is outputting three-phase alternating current to the hoisting motor, the brake is applied based on a command output from the inverter. Variable speed electric hoist provided with brake opening and closing means for opening and brake non-closing means for detecting and closing the brake when the command output from the inverter does not stop after stopping the instruction to wind up and down. . 제1항에 있어서, 상기 브레이크 비상폐성수단은 상기 호이스팅모터의 감아내림 회전량을 검출하는 회전량검출수단 및 감아내림지시를 정지한 후에 있어서 상기 감아내림 회전량이 미리 정해진 양을 초과했다는 것을 검출하고, 상기 브레이크를 폐성시키는 신호를 출력하는 이상검출 수단으로 구성된 것을 특징으로 하는 가변속형 전기호이스트.2. The brake non-closing means according to claim 1, wherein the brake non-closing means detects that the amount of rotation of the hoist motor detects the amount of rotation of the hoisting motor and that the amount of rotation of the winding has exceeded a predetermined amount after stopping the winding instruction. And an abnormality detecting means for outputting a signal for closing the brake. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890008397A 1988-12-28 1989-06-19 Variable Speed Electric Hoist KR940001098B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP33223588 1988-12-28
JP88-332235 1988-12-28

Publications (2)

Publication Number Publication Date
KR900009422A true KR900009422A (en) 1990-07-04
KR940001098B1 KR940001098B1 (en) 1994-02-14

Family

ID=18252690

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890008397A KR940001098B1 (en) 1988-12-28 1989-06-19 Variable Speed Electric Hoist

Country Status (3)

Country Link
JP (1) JPH0717346B2 (en)
KR (1) KR940001098B1 (en)
DE (1) DE3924940C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100411672B1 (en) * 1999-09-09 2003-12-18 주식회사 포스코 A circuit for checking dropping and over loading in a crane

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2666574B1 (en) * 1990-09-10 1993-09-10 Pascal Alain RETARDER DEVICE FOR SINGLE-SPEED ELEVATORS OPERATING WITH AN ELECTRIC DRIVE MOTOR.
FI88015C (en) * 1990-12-17 1993-03-25 Kone Oy FOER GENERATION FOER GENERERING AV HASTIGHETSSTAELLVAERDE FOER EN LYFTMOTOR
DE4440420C3 (en) * 1994-11-07 2003-07-24 Demag Cranes & Components Gmbh Method and device for monitoring and / or controlling the speed of an electric drive with frequency converter for hoists
DE19643408C2 (en) * 1996-10-21 2001-07-26 Stahl R Foerdertech Gmbh Emergency operation control for a hoist
CN102874688B (en) * 2012-09-28 2014-04-16 长春轨道客车股份有限公司 Transfer platform cart traveling and flap lifting control method
JP6556551B2 (en) * 2015-08-07 2019-08-07 株式会社日立産機システム Hoisting machine and overhead crane apparatus using the same
CN108928741A (en) * 2018-07-03 2018-12-04 深圳市蓝海华腾技术股份有限公司 A kind of guard method after crane brake failure
JP7012972B2 (en) * 2020-06-10 2022-01-31 菱栄工機株式会社 Crane malfunction prevention system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58183594A (en) * 1982-04-14 1983-10-26 三菱電機株式会社 Variable speed type electric hoist
JPS61101397A (en) * 1984-10-18 1986-05-20 三菱電機株式会社 Variable speed type electric hoist

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100411672B1 (en) * 1999-09-09 2003-12-18 주식회사 포스코 A circuit for checking dropping and over loading in a crane

Also Published As

Publication number Publication date
DE3924940A1 (en) 1990-07-12
JPH0717346B2 (en) 1995-03-01
KR940001098B1 (en) 1994-02-14
DE3924940C2 (en) 1994-04-07
JPH02261796A (en) 1990-10-24

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