FR2292659A1 - Overload protector for twin hook jib crane - has comparator for loads on inclined jib and reference value(NL010676 - Google Patents

Overload protector for twin hook jib crane - has comparator for loads on inclined jib and reference value(NL010676

Info

Publication number
FR2292659A1
FR2292659A1 FR7535977A FR7535977A FR2292659A1 FR 2292659 A1 FR2292659 A1 FR 2292659A1 FR 7535977 A FR7535977 A FR 7535977A FR 7535977 A FR7535977 A FR 7535977A FR 2292659 A1 FR2292659 A1 FR 2292659A1
Authority
FR
France
Prior art keywords
jib
comparator
crane
overload protector
loads
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
FR7535977A
Other languages
French (fr)
Other versions
FR2292659B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2292659A1 publication Critical patent/FR2292659A1/en
Application granted granted Critical
Publication of FR2292659B1 publication Critical patent/FR2292659B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/54—Safety gear
    • B66D1/58—Safety gear responsive to excess of load
    • 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

Landscapes

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

Abstract

The overload protector is used in a jib crane with two independent, rope actuated load lifting hooks. These hooks are arranged at different distances on the jib from the pivoting axis. A mechanical adder is provided for the lifting rope forces in the rope drums (22, 24) to form proportional actual values by taking into account the difference in the distance of the lifting hook ropes (26, 32) from the jib pivoting axis (14) and the static loading of the crane. A mechanical comparator is used for the reference and actual load values.
FR7535977A 1974-11-28 1975-11-25 Overload protector for twin hook jib crane - has comparator for loads on inclined jib and reference value(NL010676 Granted FR2292659A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742456359 DE2456359C3 (en) 1974-11-28 1974-11-28 Overload protection system for a luffing jib crane

Publications (2)

Publication Number Publication Date
FR2292659A1 true FR2292659A1 (en) 1976-06-25
FR2292659B1 FR2292659B1 (en) 1981-09-25

Family

ID=5931983

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535977A Granted FR2292659A1 (en) 1974-11-28 1975-11-25 Overload protector for twin hook jib crane - has comparator for loads on inclined jib and reference value(NL010676

Country Status (4)

Country Link
BE (1) BE835639A (en)
DE (1) DE2456359C3 (en)
FR (1) FR2292659A1 (en)
NL (1) NL7512589A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1491485A1 (en) * 2003-06-23 2004-12-29 FASSI GRU IDRAULICHE S.p.A. Crane with a winch and a traction control device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL37719C (en) * 1900-01-01
DE699423C (en) * 1937-07-15 1940-11-28 Ardeltwerke Device for securing a crane with a variable radius against exceeding the permissible load torque
FR1105555A (en) * 1954-05-28 1955-12-05 Delatter & Frouard Reunis Ets Safety device, in particular for lifting equipment
DE1021994B (en) * 1955-08-03 1958-01-02 Maschf Augsburg Nuernberg Ag Grab hoist for four rope grab with overload protection device
DE1105581B (en) * 1959-08-14 1961-04-27 Krupp Ardelt Gmbh Overload protection for grab cranes
FR1444951A (en) * 1965-05-28 1966-07-08 Safety device on lifting winch
FR2016583A1 (en) * 1968-08-29 1970-05-08 Hachler Walter
DE1953073A1 (en) * 1969-10-22 1971-04-29 Maschf Augsburg Nuernberg Ag Overload protection for hoists, especially container bridge cranes, with two hoists
DE2309264A1 (en) * 1973-02-24 1974-08-29 Noell Gmbh OVERLOAD SAFETY FOR LIFTING DEVICES

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL37719C (en) * 1900-01-01
DE699423C (en) * 1937-07-15 1940-11-28 Ardeltwerke Device for securing a crane with a variable radius against exceeding the permissible load torque
FR1105555A (en) * 1954-05-28 1955-12-05 Delatter & Frouard Reunis Ets Safety device, in particular for lifting equipment
DE1021994B (en) * 1955-08-03 1958-01-02 Maschf Augsburg Nuernberg Ag Grab hoist for four rope grab with overload protection device
DE1105581B (en) * 1959-08-14 1961-04-27 Krupp Ardelt Gmbh Overload protection for grab cranes
FR1444951A (en) * 1965-05-28 1966-07-08 Safety device on lifting winch
FR2016583A1 (en) * 1968-08-29 1970-05-08 Hachler Walter
DE1953073A1 (en) * 1969-10-22 1971-04-29 Maschf Augsburg Nuernberg Ag Overload protection for hoists, especially container bridge cranes, with two hoists
DE2309264A1 (en) * 1973-02-24 1974-08-29 Noell Gmbh OVERLOAD SAFETY FOR LIFTING DEVICES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1491485A1 (en) * 2003-06-23 2004-12-29 FASSI GRU IDRAULICHE S.p.A. Crane with a winch and a traction control device

Also Published As

Publication number Publication date
DE2456359B2 (en) 1977-11-24
FR2292659B1 (en) 1981-09-25
NL7512589A (en) 1976-06-01
DE2456359A1 (en) 1976-06-10
DE2456359C3 (en) 1978-07-13
BE835639A (en) 1976-03-16

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Legal Events

Date Code Title Description
ST Notification of lapse