GB888550A - Improved luffing crane mechanism - Google Patents

Improved luffing crane mechanism

Info

Publication number
GB888550A
GB888550A GB16077/60A GB1607760A GB888550A GB 888550 A GB888550 A GB 888550A GB 16077/60 A GB16077/60 A GB 16077/60A GB 1607760 A GB1607760 A GB 1607760A GB 888550 A GB888550 A GB 888550A
Authority
GB
United Kingdom
Prior art keywords
boom
cables
sheaves
drum
load
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
GB16077/60A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB888550A publication Critical patent/GB888550A/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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/52—Floating cranes
    • 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
    • B66C23/06—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 with jibs mounted for jibbing or luffing movements
    • B66C23/08—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
    • B66C23/10—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
    • 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
    • B66C2700/0307—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib

Landscapes

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

Abstract

888,550. Preventing load of crane from swinging. ALLMANNA SVENSKA ELEKTRISKA A.B. May 6, 1960 [May 8, 1959], No. 16077/60. Class 78 (4). A level luffing crane having a boom 7, Fig. 2, and winch drums 1, 3 for hoisting and luffing cables respectively all mounted on a turn-table 5 has two load-carrying cables 13, 14, Fig. 1, which are arranged in a three-point suspension 16, 21, 22 at the end of the boom. These cables pass round a sheave 19, 20 and each has at least one end attached to a drum 12 which is mounted on the boom and rotated by the hoist cable 2. As shown, both ends of cables 13, 14 are attached to the drum 12 so that the hoisting cable winds in both ends of cables 13, 14 by rotating the drum 12. The sheaves 20, 21 are widely spaced laterally to form, with the sheave 15, 16, the three-point suspension which prevents swinging of the load. In a second embodiment in which only one end of the load-carrying cables is fixed to the drum 12 those sections of the drum 12 on to which cables 13, 14 are wound have a diameter twice that of the part of the drum taking up the hoist-cable 2, the opposite ends of cables 13, 14 being fastened to the boom at the point of attachment of sheaves 15, 16. In a further modification, the sheaves 15, 16, Fig. 1, may be mounted directly on the boom 7 between the drum 12 and sheaves 9 whilst the sheaves 21, 22 could be longitudinally spaced on the boom in relation to the position of sheaves 15, 16, the sheaves 21, 22 being mounted on one or two extensions of the boom, preferably at the tip. As described, the boom is of ladder construction tapering towards its outer end. A small electric motor 23 may ensure positive lowering of the load hook if its own or an added weight is insufficient.
GB16077/60A 1959-05-08 1960-05-06 Improved luffing crane mechanism Expired GB888550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE888550X 1959-05-08

Publications (1)

Publication Number Publication Date
GB888550A true GB888550A (en) 1962-01-31

Family

ID=20374610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16077/60A Expired GB888550A (en) 1959-05-08 1960-05-06 Improved luffing crane mechanism

Country Status (1)

Country Link
GB (1) GB888550A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341315A (en) * 1978-11-30 1982-07-27 Tseng Tsiung Siung Marine derrick arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341315A (en) * 1978-11-30 1982-07-27 Tseng Tsiung Siung Marine derrick arrangement

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