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GB1362110A - Safety device for crane - Google Patents

Safety device for crane

Info

Publication number
GB1362110A
GB1362110A GB5874072A GB5874072A GB1362110A GB 1362110 A GB1362110 A GB 1362110A GB 5874072 A GB5874072 A GB 5874072A GB 5874072 A GB5874072 A GB 5874072A GB 1362110 A GB1362110 A GB 1362110A
Authority
GB
United Kingdom
Prior art keywords
signal
crane
representative
dec
produce
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.)
Expired
Application number
GB5874072A
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.)
Furukawa Unic Corp
Original Assignee
Unic 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.)
Filing date
Publication date
Application filed by Unic Corp filed Critical Unic Corp
Publication of GB1362110A publication Critical patent/GB1362110A/en
Expired 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
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

1362110 Crane safety devices UNIC KK 20 Dec 1972 [29 Dec 1971] 58740/72 Heading B8B [Also in Divisions G1 and G4] A safety device for a crane comprises boom length detecting means 1 providing an electrical signal indicative of boom length which signal is multiplied by an electrical signal representative of the cosine of boom inclination angle to produce a signal representative of work radius which is applied to means 3 to produce a signal W o representative of rated load for the work radius obtaining which signal W o is compared at 5 with a signal representing actual load W l and the difference when W o - W l # 0 actuates an alarm device 6 or a device to stop the operation of the crane.
GB5874072A 1971-12-29 1972-12-20 Safety device for crane Expired GB1362110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17372A JPS5413651B2 (en) 1971-12-29 1971-12-29

Publications (1)

Publication Number Publication Date
GB1362110A true GB1362110A (en) 1974-07-30

Family

ID=11466603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5874072A Expired GB1362110A (en) 1971-12-29 1972-12-20 Safety device for crane

Country Status (7)

Country Link
US (1) US3854128A (en)
JP (1) JPS5413651B2 (en)
AU (1) AU448029B2 (en)
DE (1) DE2263122C3 (en)
FR (1) FR2166087B1 (en)
GB (1) GB1362110A (en)
ZA (1) ZA728662B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219113A (en) * 1988-05-20 1989-11-29 Teledyne Ind Curve approximating circuits

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057792A (en) * 1970-01-21 1977-11-08 Ludwig Pietzsch Overload safety device for telescopic cranes
JPS50114765A (en) * 1974-02-22 1975-09-08
GB1500501A (en) * 1974-04-10 1978-02-08 Pye Ltd Crane load indicating arrangement
US3922789A (en) * 1974-12-11 1975-12-02 Koehring Co Boom length sensing system with two-block condition sensing
AT343860B (en) * 1975-02-04 1978-06-26 Krueger & Co Kg DEVICE FOR CONTROLLING A CRANE JIB DRIVE
JPS51124258A (en) * 1975-04-23 1976-10-29 Hitachi Ltd Device for detecting overload
US3993166A (en) * 1975-04-29 1976-11-23 Bofors America, Inc. Overload signalling system for fork lift trucks and the like
US4054055A (en) * 1976-08-06 1977-10-18 Precilec Device for controlling the load of a lifting appliance
JPS5470233U (en) * 1977-10-28 1979-05-18
US4205308A (en) * 1977-11-21 1980-05-27 Fmc Corporation Programmable alarm system for marine loading arms
JPS54120162A (en) * 1978-03-09 1979-09-18 Nippon Telegr & Teleph Corp <Ntt> Safety system against overturning of crane
JPS5570487U (en) * 1978-11-08 1980-05-15
DE3071572D1 (en) * 1979-11-12 1986-05-28 Fmc Europe Process and apparatus for watching and controlling an articulated fluid-transfer arm for linking a ship to a platform in the sea
JPS55164293U (en) * 1980-05-02 1980-11-26
US4511974A (en) * 1981-02-04 1985-04-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Load condition indicating method and apparatus for forklift truck
US4523686A (en) * 1982-07-28 1985-06-18 Fmc Corporation Anti-two block system
DE3613870A1 (en) * 1986-04-24 1987-10-29 Mo N Proizv Ob Str Dorozh Mash DEVICE FOR OVERLOAD AND OVERLOAD PROTECTION
FR2633268B3 (en) * 1988-06-27 1991-05-31 Roux Ind Sa TORQUE OR MOMENT LIMITING SYSTEM FOR LIFTING MACHINES
ES2908065T3 (en) 2015-06-24 2022-04-27 Palfinger Ag crane control

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371224A (en) * 1965-07-16 1968-02-27 Astrodata Inc High accuracy electronic function generator
JPS4414272Y1 (en) * 1965-08-11 1969-06-17
GB993954A (en) * 1966-07-07 1965-06-02 Weighload Ltd Safe load indicators in jib cranes
US3534355A (en) * 1967-03-28 1970-10-13 Dole Valve Co Load warning device
US3505514A (en) * 1967-11-13 1970-04-07 Eaton Yale & Towne Load warning device
US3549876A (en) * 1968-03-07 1970-12-22 Eaton Yale & Towne Crane operating radius indicator
GB1282627A (en) * 1968-10-16 1972-07-19 Ludwig Pietzsch Overload safety device for jib cranes
US3618064A (en) * 1969-08-20 1971-11-02 Eaton Yale & Towne Crane computer
US3638211A (en) * 1969-10-08 1972-01-25 Litton Systems Inc Crane safety system
US3724679A (en) * 1971-02-19 1973-04-03 Clark Equipment Co Indicator or control for cranes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219113A (en) * 1988-05-20 1989-11-29 Teledyne Ind Curve approximating circuits

Also Published As

Publication number Publication date
DE2263122A1 (en) 1973-07-05
US3854128A (en) 1974-12-10
FR2166087A1 (en) 1973-08-10
AU448029B2 (en) 1974-05-09
ZA728662B (en) 1973-08-29
AU4977172A (en) 1974-05-09
JPS4872840A (en) 1973-10-01
JPS5413651B2 (en) 1979-06-01
DE2263122C3 (en) 1980-02-14
DE2263122B2 (en) 1979-06-13
FR2166087B1 (en) 1976-10-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee