FR2224394A1 - Inclined-jib tower crane safety equipment - monitors hoist and travel winches to prevent load entering danger area - Google Patents

Inclined-jib tower crane safety equipment - monitors hoist and travel winches to prevent load entering danger area

Info

Publication number
FR2224394A1
FR2224394A1 FR7312739A FR7312739A FR2224394A1 FR 2224394 A1 FR2224394 A1 FR 2224394A1 FR 7312739 A FR7312739 A FR 7312739A FR 7312739 A FR7312739 A FR 7312739A FR 2224394 A1 FR2224394 A1 FR 2224394A1
Authority
FR
France
Prior art keywords
hoist
jib
tower crane
travel
winches
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.)
Granted
Application number
FR7312739A
Other languages
French (fr)
Other versions
FR2224394B1 (en
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.)
Cadillon SA
Original Assignee
Cadillon SA
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 Cadillon SA filed Critical Cadillon SA
Priority to FR7312739A priority Critical patent/FR2224394A1/en
Publication of FR2224394A1 publication Critical patent/FR2224394A1/en
Application granted granted Critical
Publication of FR2224394B1 publication Critical patent/FR2224394B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B66C13/50—Applications of limit circuits or of limit-switch arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Control And Safety Of Cranes (AREA)
  • Jib Cranes (AREA)

Abstract

The equipment is for use with a tower crane having a jib inclined upwards and along which a crab travels, and prevents the hook entering a zone limited by a plane parallel to the jib. The hoist and crab travel winch drums have accessories, typically potentiometers, supplying voltages proportional to the amount for which each cable is unwound. The difference between these values and a threshold value, which is a function of the distance of the plane referred to from the jib, is compared, and relay contacts open or close depending on whether the difference is greater or lesser than the threshold value.
FR7312739A 1973-04-03 1973-04-03 Inclined-jib tower crane safety equipment - monitors hoist and travel winches to prevent load entering danger area Granted FR2224394A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7312739A FR2224394A1 (en) 1973-04-03 1973-04-03 Inclined-jib tower crane safety equipment - monitors hoist and travel winches to prevent load entering danger area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7312739A FR2224394A1 (en) 1973-04-03 1973-04-03 Inclined-jib tower crane safety equipment - monitors hoist and travel winches to prevent load entering danger area

Publications (2)

Publication Number Publication Date
FR2224394A1 true FR2224394A1 (en) 1974-10-31
FR2224394B1 FR2224394B1 (en) 1977-04-29

Family

ID=9117652

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7312739A Granted FR2224394A1 (en) 1973-04-03 1973-04-03 Inclined-jib tower crane safety equipment - monitors hoist and travel winches to prevent load entering danger area

Country Status (1)

Country Link
FR (1) FR2224394A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844161A1 (en) * 1988-12-23 1990-07-05 Mannesmann Ag Implement
CN111689393A (en) * 2020-05-21 2020-09-22 湖南中联重科建筑起重机械有限责任公司 Method and device for calibrating position value of trolley and engineering machinery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844161A1 (en) * 1988-12-23 1990-07-05 Mannesmann Ag Implement
CN111689393A (en) * 2020-05-21 2020-09-22 湖南中联重科建筑起重机械有限责任公司 Method and device for calibrating position value of trolley and engineering machinery

Also Published As

Publication number Publication date
FR2224394B1 (en) 1977-04-29

Similar Documents

Publication Publication Date Title
GB1516582A (en) Gantry cranes
GB1021153A (en) Improvements in and relating to load-lifting apparatus
FR2224394A1 (en) Inclined-jib tower crane safety equipment - monitors hoist and travel winches to prevent load entering danger area
GB1146392A (en) Improvements relating to cranes
GB1049863A (en) Improvements relating to cranes
GB1226936A (en)
GB1301332A (en)
GB1104157A (en) Improvements relating to cranes
GB1375217A (en)
GB1294669A (en) Cargo handling crane
GB1123040A (en) Ships derricks for cargo loading
GB1056766A (en) Crane
FR2270192A1 (en) Movable crane load radius reduction system - has support acting against hoist rope falls hauled in by winch
GB1456054A (en) Crane for ships
GB1495479A (en) Cranes mounted on ships
GB1470229A (en) Overhead crane with -c- shaped claws fitted lifting beam
GB968398A (en) A multi-purpose machine adapted to be used as a bucket crane
FR2314886A1 (en) Moving load lifting equipment - has rope kept under constant tension and hoisting is by mechanism controlled by rope movement
GB1106325A (en) Ship's loading derrick
GB1177115A (en) Stressed Crane Structures
SU589202A1 (en) Jib-type crane
GB1085512A (en) Improvements relating to cranes
GB1110625A (en) Improvements in or relating to overhead cranes
GB1099150A (en) Overhead travelling cranes
SU385893A1 (en) METHOD OF SPARING CARROT CHANNEL

Legal Events

Date Code Title Description
ST Notification of lapse