GB1311686A - Cranes - Google Patents
CranesInfo
- 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
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.
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)
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)
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 |
-
1969
- 1969-08-20 US US851606A patent/US3618064A/en not_active Expired - Lifetime
-
1970
- 1970-04-28 GB GB2037870A patent/GB1311686A/en not_active Expired
- 1970-05-22 DE DE19702025047 patent/DE2025047B2/en active Granted
- 1970-06-09 BE BE751679D patent/BE751679A/en unknown
- 1970-06-18 FR FR7022584A patent/FR2058386B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2058386A1 (en) | 1971-05-28 |
FR2058386B1 (en) | 1974-09-20 |
US3618064A (en) | 1971-11-02 |
DE2025047A1 (en) | 1971-11-04 |
DE2025047C3 (en) | 1974-10-24 |
DE2025047B2 (en) | 1972-08-24 |
BE751679A (en) | 1970-12-09 |
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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 |