GB1448748A - Safety device for a crane which compares two signals - Google Patents

Safety device for a crane which compares two signals

Info

Publication number
GB1448748A
GB1448748A GB5471573A GB5471573A GB1448748A GB 1448748 A GB1448748 A GB 1448748A GB 5471573 A GB5471573 A GB 5471573A GB 5471573 A GB5471573 A GB 5471573A GB 1448748 A GB1448748 A GB 1448748A
Authority
GB
United Kingdom
Prior art keywords
crane
compares
signals
safety device
safety
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
GB5471573A
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.)
PPM SA
Potain Poclain Materiel PPM SA
Original Assignee
PPM SA
Potain Poclain Materiel PPM 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 PPM SA, Potain Poclain Materiel PPM SA filed Critical PPM SA
Publication of GB1448748A publication Critical patent/GB1448748A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
    • G01G19/18—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads having electrical weight-sensitive devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
GB5471573A 1972-11-27 1973-11-26 Safety device for a crane which compares two signals Expired GB1448748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7242099A FR2207853B1 (en) 1972-11-27 1972-11-27

Publications (1)

Publication Number Publication Date
GB1448748A true GB1448748A (en) 1976-09-08

Family

ID=9107767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5471573A Expired GB1448748A (en) 1972-11-27 1973-11-26 Safety device for a crane which compares two signals

Country Status (6)

Country Link
JP (1) JPS49134053A (en)
DE (1) DE2352725C2 (en)
ES (1) ES419960A1 (en)
FR (1) FR2207853B1 (en)
GB (1) GB1448748A (en)
IT (1) IT996985B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2390366A1 (en) * 1977-05-13 1978-12-08 Preux Roger STATE OF CHARGE CONTROLLER, ESPECIALLY FOR LIFTING EQUIPMENT

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1171828B (en) * 1954-03-31 1964-06-04 Siemens Ag Bucket wheel excavator
GB1183190A (en) * 1967-08-15 1970-03-04 B & A Engineering Company Ltd Crane Radius Indicator or Crane Safe-Load Indicator Radius Compensating Device
US3618064A (en) * 1969-08-20 1971-11-02 Eaton Yale & Towne Crane computer
DE2101673C3 (en) * 1971-01-15 1974-02-07 Leo Gottwald Kg, 4000 Duesseldorf Device for limiting the load torque on jib cranes
DE2108142A1 (en) * 1971-02-19 1972-08-31 Pietzsch Ludwig Overload protection for telescopic cranes

Also Published As

Publication number Publication date
IT996985B (en) 1975-12-10
FR2207853A1 (en) 1974-06-21
ES419960A1 (en) 1976-04-16
DE2352725C2 (en) 1983-09-01
DE2352725A1 (en) 1974-05-30
JPS49134053A (en) 1974-12-24
FR2207853B1 (en) 1977-04-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee