GB1192039A - Telescopic Boom Angle Control System for Cranes - Google Patents

Telescopic Boom Angle Control System for Cranes

Info

Publication number
GB1192039A
GB1192039A GB53513/67D GB5351367D GB1192039A GB 1192039 A GB1192039 A GB 1192039A GB 53513/67 D GB53513/67 D GB 53513/67D GB 5351367 D GB5351367 D GB 5351367D GB 1192039 A GB1192039 A GB 1192039A
Authority
GB
United Kingdom
Prior art keywords
boom
valve
angle
winch
lever
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
GB53513/67D
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.)
Baldwin Lima Hamilton Corp
Original Assignee
Baldwin Lima Hamilton 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 Baldwin Lima Hamilton Corp filed Critical Baldwin Lima Hamilton Corp
Publication of GB1192039A publication Critical patent/GB1192039A/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
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0392—Movement of the crane arm; Coupling of the crane arm with the counterweights; Safety devices for the movement of the arm

Abstract

1,192,039. Jib cranes. BALDWIN-LIMAHAMILTON CORP. 24 Nov., 1967 [1 March, 1967], No. 53513/67. Heading B8B. [Also in Divisions G1 and G3] A control system for a telescopic boom crane having a base section of the crane boom pivotally mounted for movement in a vertical plane and a cable extending from an extensible and retractable section of the boom to a winch for changing the boom angle comprises means for extending and retracting the latter boom section relative to the base section, means for sensing the resultant changes in the boom angle, the winch and adjusting means interconnecting the sensing means and the winch for automatically actuating the winch to maintain a selected boom angle. The winch 31 is driven by a hydraulic motor 36 controlled by a valve 40, the boom angle being selected by operation of a lever 47, and the extensible and retractable boom section is moved relative to the base section by rams 21 controlled by a valve 57 operated by a lever 58, there being provided a valve 59 to limit elevation of the boom, a pilot operated check valve 62 to prevent undesired retraction of the rams 21, and a restirictor valve 64 to control the maximum rate of retraction of the boom. Changes in the boom angle are sensed by a linkage 65, a spring-biased lost motion link 75 being provided to permit rapid movement of the lever 47. In a second embodiment, Figs. 4 and 5 (not shown), the linkage 65 is replaced by a hydraulic pilot system including a pair of balanced displacement type double acting hydraulic cylinder and piston units operating the valve 40 by the difference in pressure in the cylinder ends consequential upon the boom being moved from the selected angle. In a third embodiment, Figs. 6 and 7 (not shown), the linkage 65 is replaced by an electrohydraulic control system including an electrohydraulic pilot valve controlling the valve 40 and oprated by the potential differential across its terminals which are respectively connected to a potentiometer operated by the lever 47 and a potentiometer operated by movement of the boom as its angle is varied.
GB53513/67D 1967-03-01 1967-11-24 Telescopic Boom Angle Control System for Cranes Expired GB1192039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US619628A US3371799A (en) 1967-03-01 1967-03-01 Telescopic boom angle control system

Publications (1)

Publication Number Publication Date
GB1192039A true GB1192039A (en) 1970-05-13

Family

ID=24482683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53513/67D Expired GB1192039A (en) 1967-03-01 1967-11-24 Telescopic Boom Angle Control System for Cranes

Country Status (8)

Country Link
US (1) US3371799A (en)
BE (1) BE704344A (en)
DE (1) DE1556340A1 (en)
FI (1) FI44279C (en)
FR (1) FR1549661A (en)
GB (1) GB1192039A (en)
NL (1) NL6715074A (en)
SE (1) SE310540B (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461989A (en) * 1967-11-29 1969-08-19 Chance Co Ab Mechanism for preventing excessive relative swinging of an articulated aerial device
US3601259A (en) * 1968-12-26 1971-08-24 Hyster Co Crane construction
US3561610A (en) * 1969-04-28 1971-02-09 Eastman Kodak Co Boom stop
US3613918A (en) * 1969-12-10 1971-10-19 Melvin W Kruschke Field service vehicle
JPS4919388B1 (en) * 1970-03-28 1974-05-17
US3841493A (en) * 1972-06-05 1974-10-15 J Becker Moment monitoring system for hydraulic-piston type cranes
US3777899A (en) * 1972-08-14 1973-12-11 Harrischfeger Corp Bounce-preventing control for hydraulic cylinder
US3814265A (en) * 1973-08-20 1974-06-04 Harnischfeger Corp Hydraulic crane control system having means for deactivating control valves when operating limit is exceeded
US3912093A (en) * 1974-10-11 1975-10-14 Peterson Tractor Co Hoist truck with planetary gear assemblies and load sensor means
DE3030821C2 (en) * 1979-08-17 1983-12-01 Coles Cranes Ltd., Sunderland, Tyne and Wear Telescopic boom rope guying
US4352434A (en) * 1980-05-01 1982-10-05 Fmc Corporation Pendant supported hydraulic extensible boom
US4489838A (en) * 1981-08-17 1984-12-25 Fmc Corporation Low droop multi-part pendant supported boom
US4514939A (en) * 1981-08-17 1985-05-07 Fmc Corporation Extensible boom with manual section stored in base
US4544071A (en) * 1982-06-30 1985-10-01 Fmc Corporation External pendant pay-out system with anti-droop control
US4467928A (en) * 1982-06-30 1984-08-28 Fmc Corporation Pendant supported boom with fixed and live pendant portions
US4460098A (en) * 1982-06-30 1984-07-17 Fmc Corporation Pendant control system for pendant supported boom
US4492312A (en) * 1982-06-30 1985-01-08 Fmc Corporation External pendant pay-out system with anti-droop control
US4491228A (en) * 1982-06-30 1985-01-01 Fmc Corporation Floating sheave type pendant pay-out system for pendant supported boom
US4557391A (en) * 1982-06-30 1985-12-10 Fmc Corporation Method of controlling the angle of a pivotal boom with extensible sections
US4585132A (en) * 1984-09-10 1986-04-29 Fmc Corporation Extensible boom with manual section stored in base
DE102014012457A1 (en) * 2014-08-20 2016-02-25 Liebherr-Werk Ehingen Gmbh Automatic erection of a crane
CN110181242A (en) * 2018-02-23 2019-08-30 中国神华能源股份有限公司 The hydraulic cylinder replacing options of stacker-reclaimer
CN109911772B (en) * 2019-04-30 2024-01-30 安徽柳工起重机有限公司 Suspension arm rotation control system for crane loading and unloading vehicle and control method thereof
CN110980528A (en) * 2019-11-19 2020-04-10 徐州重型机械有限公司 Novel single-cylinder plug pin type telescopic system and control method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787383A (en) * 1951-03-13 1957-04-02 Baldwin Lima Hamilton Corp Full circle boom crane
FR1210405A (en) * 1958-09-25 1960-03-08 Hydraulic system to ensure the rigidity of an extendable guyed element

Also Published As

Publication number Publication date
DE1556340A1 (en) 1970-01-22
FR1549661A (en) 1968-12-13
BE704344A (en) 1968-02-01
US3371799A (en) 1968-03-05
SE310540B (en) 1969-05-05
NL6715074A (en) 1968-09-02
FI44279C (en) 1971-10-11
FI44279B (en) 1971-06-30

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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