JPS53142750A - Method of detecting landing of hung load of crane, etc. - Google Patents

Method of detecting landing of hung load of crane, etc.

Info

Publication number
JPS53142750A
JPS53142750A JP5688877A JP5688877A JPS53142750A JP S53142750 A JPS53142750 A JP S53142750A JP 5688877 A JP5688877 A JP 5688877A JP 5688877 A JP5688877 A JP 5688877A JP S53142750 A JPS53142750 A JP S53142750A
Authority
JP
Japan
Prior art keywords
crane
detecting
detecting landing
hung load
landing
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.)
Pending
Application number
JP5688877A
Other languages
Japanese (ja)
Inventor
Keiji Manabe
Kazuo Oda
Yasumasa Maruyama
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.)
Hitachi Kiden Kogyo Ltd
Original Assignee
Hitachi Kiden Kogyo Ltd
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 Hitachi Kiden Kogyo Ltd filed Critical Hitachi Kiden Kogyo Ltd
Priority to JP5688877A priority Critical patent/JPS53142750A/en
Publication of JPS53142750A publication Critical patent/JPS53142750A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control And Safety Of Cranes (AREA)

Abstract

PURPOSE: To improve safety and to economize the cost of construction, by detecting the input power of a motor by means of a power transducer, and by detecting landing by comparing the detected value and standard voltage beforehand set by a comparison judging device, to stop the motor.
COPYRIGHT: (C)1978,JPO&Japio
JP5688877A 1977-05-16 1977-05-16 Method of detecting landing of hung load of crane, etc. Pending JPS53142750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5688877A JPS53142750A (en) 1977-05-16 1977-05-16 Method of detecting landing of hung load of crane, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5688877A JPS53142750A (en) 1977-05-16 1977-05-16 Method of detecting landing of hung load of crane, etc.

Publications (1)

Publication Number Publication Date
JPS53142750A true JPS53142750A (en) 1978-12-12

Family

ID=13039957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5688877A Pending JPS53142750A (en) 1977-05-16 1977-05-16 Method of detecting landing of hung load of crane, etc.

Country Status (1)

Country Link
JP (1) JPS53142750A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567889A (en) * 1979-06-26 1981-01-27 Shinko Electric Co Ltd Landing detector for grab backet
JPS624189A (en) * 1985-06-27 1987-01-10 日立建機株式会社 Flexible structure working machine
JPH0275491U (en) * 1988-11-30 1990-06-08
JPH0382391U (en) * 1989-12-11 1991-08-22

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567889A (en) * 1979-06-26 1981-01-27 Shinko Electric Co Ltd Landing detector for grab backet
JPS5738515B2 (en) * 1979-06-26 1982-08-16
JPS624189A (en) * 1985-06-27 1987-01-10 日立建機株式会社 Flexible structure working machine
JPH0275491U (en) * 1988-11-30 1990-06-08
JPH0382391U (en) * 1989-12-11 1991-08-22

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