EP0476460A2 - Dispositif de sécurité pour un entraînement d'un engin de levage - Google Patents

Dispositif de sécurité pour un entraînement d'un engin de levage Download PDF

Info

Publication number: EP0476460A2
Authority: EP; European Patent Office
Prior art keywords: motor; safety device; hoist drive; sum; vectorial
Prior art date: 1990-09-21
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

Application number

EP91115099A

Other languages

German (de)

English (en)

Other versions

EP0476460B1 (fr

EP0476460A3 (en

Inventor

Arnold Dipl.-Ing. Axmann

Reinhold Pütt

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Siemens AG

Siemens Corp

Original Assignee

Siemens AG

Siemens Corp

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.)

1990-09-21

Filing date

1991-09-06

Publication date

1992-03-25

1991-09-06 Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG

1992-03-25 Publication of EP0476460A2 publication Critical patent/EP0476460A2/fr

1992-10-28 Publication of EP0476460A3 publication Critical patent/EP0476460A3/de

1994-04-27 Application granted granted Critical

1994-04-27 Publication of EP0476460B1 publication Critical patent/EP0476460B1/fr

2011-09-06 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000011156 evaluation Methods 0.000 claims description 4
238000012935 Averaging Methods 0.000 claims description 2
230000015572 biosynthetic process Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000004804 winding Methods 0.000 description 1

Images

Classifications

- 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 invention relates to a hoist drive in which a three-phase motor is connected to a converter with a variable output frequency and the motor is assigned a mechanical safety brake which can only be released when the torque of the motor has a predetermined value.
the holding brake may only be released if there is sufficient torque in the electric motor to hold or raise the load, otherwise it would be - think e.g. on pouring cranes - serious accidents can occur.
the object of the present invention is to provide a criterion for the safety device which indicates when a sufficient moment is available. This object is achieved in that the electrical currents in the lines between the converter and motor can be detected and a signal proportional to the vectorial sum and the mean sum of the electrical currents is formed therefrom and that the brake release command is derived from the condition, that the vectorial sum lies below a predetermined first limit value and the mean sum lies above a second limit value.
the vectorial sum formation can be carried out relatively easily with a transformer 17 arranged in a star point connection and the averaging with a rectifier 18.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Control Of Ac Motors In General (AREA)

EP91115099A 1990-09-21 1991-09-06 Dispositif de sécurité pour un entraînement d'un engin de levage Expired - Lifetime EP0476460B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4029993		1990-09-21
DE4029993		1990-09-21

Publications (3)

Publication Number	Publication Date
EP0476460A2 true EP0476460A2 (fr)	1992-03-25
EP0476460A3 EP0476460A3 (en)	1992-10-28
EP0476460B1 EP0476460B1 (fr)	1994-04-27

Family

ID=6414733

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91115099A Expired - Lifetime EP0476460B1 (fr)	1990-09-21	1991-09-06	Dispositif de sécurité pour un entraînement d'un engin de levage

Country Status (2)

Country	Link
EP (1)	EP0476460B1 (fr)
DE (1)	DE59101495D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6079576A (en) *	1995-12-13	2000-06-27	Liebherr-Werk Ehingen Gmbh	Control device for a hoist mechanism of a crane
EP1244197A1 (fr) *	2001-03-22	2002-09-25	Danfoss Bauer GmbH	Motoréducteur
EP1184331A3 (fr) *	2000-08-29	2006-10-18	KCI Konecranes International PLC	Procédé et dispositif pour commander le relâchement du frein du moteur de levage dans un appareil de levage
CN103771270A (zh) *	2014-01-09	2014-05-07	苏州汇川技术有限公司	四绳抓斗起重机闭斗提升控制系统及方法
CN108639980A (zh) *	2018-06-14	2018-10-12	广东省特种设备检测研究院顺德检测院	塔式起重机用起重量限制器检测装置
CN112456335A (zh) *	2020-11-23	2021-03-09	杭州杰牌传动科技有限公司	一种具备预励磁功能的减速电机
CN113620176A (zh) *	2020-05-09	2021-11-09	安川电机（中国）有限公司	起重设备的控制方法及其装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1880076U (de) *	1962-04-11	1963-10-03	Maschf Augsburg Nuernberg Ag	Elektrische uberlastungssicherung fuer kranhubwerke.
DE1814275B2 (de) *	1968-12-12	1977-05-26	Elbag GmbH. 5421 Weisel	Sicherheitseinrichtung fuer kranhubwerke
JPS492060B1 (fr) *	1970-06-23	1974-01-18

1991
- 1991-09-06 DE DE59101495T patent/DE59101495D1/de not_active Expired - Fee Related
- 1991-09-06 EP EP91115099A patent/EP0476460B1/fr not_active Expired - Lifetime

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6079576A (en) *	1995-12-13	2000-06-27	Liebherr-Werk Ehingen Gmbh	Control device for a hoist mechanism of a crane
EP1184331A3 (fr) *	2000-08-29	2006-10-18	KCI Konecranes International PLC	Procédé et dispositif pour commander le relâchement du frein du moteur de levage dans un appareil de levage
EP1244197A1 (fr) *	2001-03-22	2002-09-25	Danfoss Bauer GmbH	Motoréducteur
CN103771270A (zh) *	2014-01-09	2014-05-07	苏州汇川技术有限公司	四绳抓斗起重机闭斗提升控制系统及方法
CN108639980A (zh) *	2018-06-14	2018-10-12	广东省特种设备检测研究院顺德检测院	塔式起重机用起重量限制器检测装置
CN108639980B (zh) *	2018-06-14	2024-04-09	广东省特种设备检测研究院顺德检测院	塔式起重机用起重量限制器检测装置
CN113620176A (zh) *	2020-05-09	2021-11-09	安川电机（中国）有限公司	起重设备的控制方法及其装置
CN112456335A (zh) *	2020-11-23	2021-03-09	杭州杰牌传动科技有限公司	一种具备预励磁功能的减速电机

Also Published As

Publication number	Publication date
DE59101495D1 (de)	1994-06-01
EP0476460B1 (fr)	1994-04-27
EP0476460A3 (en)	1992-10-28

Legal Events

Date	Code	Title	Description
1992-02-07	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1992-03-25	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): BE DE LU NL SE
1992-09-08	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-10-28	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): BE DE LU NL SE
1993-01-20	17P	Request for examination filed	Effective date: 19921124
1993-04-07	17Q	First examination report despatched	Effective date: 19930222
1994-03-10	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-04-27	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE DE LU NL SE
1994-06-01	REF	Corresponds to:	Ref document number: 59101495 Country of ref document: DE Date of ref document: 19940601
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 91115099.3
1995-03-02	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-03-02	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-04-19	26N	No opposition filed
1997-09-11	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19970911 Year of fee payment: 7
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1999-03-31	BERE	Be: lapsed	Owner name: SIEMENS A.G. Effective date: 19980930
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1999-05-31	EUG	Se: european patent has lapsed	Ref document number: 91115099.3
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