GB1311686A - Cranes - Google Patents

Cranes

Info

Publication number
GB1311686A
GB1311686A GB2037870A GB2037870A GB1311686A GB 1311686 A GB1311686 A GB 1311686A GB 2037870 A GB2037870 A GB 2037870A GB 2037870 A GB2037870 A GB 2037870A GB 1311686 A GB1311686 A GB 1311686A
Authority
GB
United Kingdom
Prior art keywords
crane
load
voltage
wiper
angle
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
GB2037870A
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.)
Eaton Corp
Original Assignee
Eaton Yale and Towne Inc
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 Eaton Yale and Towne Inc filed Critical Eaton Yale and Towne Inc
Publication of GB1311686A publication Critical patent/GB1311686A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G06G7/64—Analogue computers for specific processes, systems or devices, e.g. simulators for non-electric machines, e.g. turbine
    • 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)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Jib Cranes (AREA)

Abstract

1311686 Measuring crane load and inclination electrically EATON YALE & TOWNE Inc 28 April 1970, [20 August 1969] 20378/70 Heading G1N Apparatus for warning of overloading of a crane includes a load cell 15 and a potentiometer 66 to which a first A. C. voltage is supplied from an oscillator 10 supplying also a second A. C. voltage in anti-phase with the first voltage to the load cell which first voltage is arranged to vary according to a predetermined low representing the desired maximum load for specified crane inclination angles and the wiper 36 of which is movable as a function of crane angle whereby signals from the wiper are combined at a summing junction 24 with the anti-phase signals from the load cell whereby a null actuates a lamp 33. The load low is set by variable resistors 45-50 which may be on a plug-in board. The crane load is indicated on meter 70 by actuation of push-button 69 which disconnects wiper 36 from the junction. Crane angle is indicated on a meter 42. The angle transducer Figs. 2, 3 (not shown) includes a pendulum.
GB2037870A 1969-08-20 1970-04-28 Cranes Expired GB1311686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85160669A 1969-08-20 1969-08-20

Publications (1)

Publication Number Publication Date
GB1311686A true GB1311686A (en) 1973-03-28

Family

ID=25311192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2037870A Expired GB1311686A (en) 1969-08-20 1970-04-28 Cranes

Country Status (5)

Country Link
US (1) US3618064A (en)
BE (1) BE751679A (en)
DE (1) DE2025047B2 (en)
FR (1) FR2058386B1 (en)
GB (1) GB1311686A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740534A (en) * 1971-05-25 1973-06-19 Litton Systems Inc Warning system for load handling equipment
US3740741A (en) * 1971-05-26 1973-06-19 Eaton Corp Alarm set point control system
GB1358871A (en) * 1971-06-25 1974-07-03 Pye Ltd Crane load indicator arrangement
US4039084A (en) * 1971-07-06 1977-08-02 Tadano Ironworks Co., Ltd. Safety-guard for a crane
JPS5413651B2 (en) * 1971-12-29 1979-06-01
US3815116A (en) * 1972-04-17 1974-06-04 Tedd Shipyards Corp Apparatus and means for monitoring moments in material handling equipment
FR2207853B1 (en) * 1972-11-27 1977-04-08 Ppm Sa
JPS5331565Y2 (en) * 1973-03-28 1978-08-05
US3819922A (en) * 1973-05-02 1974-06-25 Forney Eng Co Crane load and radius indicating system
US3893093A (en) * 1973-07-25 1975-07-01 Forney International Crane boom angle indication and warning system
US3866200A (en) * 1973-07-25 1975-02-11 Forney International Load measuring and overload warning system
US4084247A (en) * 1976-10-26 1978-04-11 Fmc Corporation Fluid loading arm alarm system
EP0029768B1 (en) * 1979-11-12 1986-04-23 FMC EUROPE S.A. Société anonyme dite: Process and apparatus for watching and controlling an articulated fluid-transfer arm for linking a ship to a platform in the sea
US6202013B1 (en) 1998-01-15 2001-03-13 Schwing America, Inc. Articulated boom monitoring system
US20040200644A1 (en) * 2003-04-08 2004-10-14 Alan Paine Safe load lifting measurement device
CN114348887B (en) * 2022-03-21 2022-10-04 杭州杰牌传动科技有限公司 Intelligent monitoring and early warning system and method based on tower crane rotation action model

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB798413A (en) * 1954-10-28 1958-07-23 Ferranti Ltd Improvements relating to electrical apparatus for indicating the departure of a variable quantity from a given range of values
US2858070A (en) * 1955-11-17 1958-10-28 Scharff Leon Moment computing and indicating systems
US3184728A (en) * 1962-03-26 1965-05-18 Smith Kline French Lab Null balancing indicator
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
DE1803457C3 (en) * 1968-10-16 1974-09-12 Pietzsch, Ludwig, Dr.-Ing., 7500 Karlsruhe Overload protection for jib cranes

Also Published As

Publication number Publication date
FR2058386B1 (en) 1974-09-20
US3618064A (en) 1971-11-02
DE2025047C3 (en) 1974-10-24
DE2025047A1 (en) 1971-11-04
BE751679A (en) 1970-12-09
FR2058386A1 (en) 1971-05-28
DE2025047B2 (en) 1972-08-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees