GB562517A - Luffing and slewing crane - Google Patents

Luffing and slewing crane

Info

Publication number
GB562517A
GB562517A GB101143A GB101143A GB562517A GB 562517 A GB562517 A GB 562517A GB 101143 A GB101143 A GB 101143A GB 101143 A GB101143 A GB 101143A GB 562517 A GB562517 A GB 562517A
Authority
GB
United Kingdom
Prior art keywords
jib
luffing
pivot
over
post
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
GB101143A
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.)
Clarke Chapman Group Ltd
Original Assignee
Clarke Chapman and Co Ltd
Clarke Chapman Group Ltd
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 Clarke Chapman and Co Ltd, Clarke Chapman Group Ltd filed Critical Clarke Chapman and Co Ltd
Priority to GB101143A priority Critical patent/GB562517A/en
Publication of GB562517A publication Critical patent/GB562517A/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
    • B66C23/06—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

562,517. Jib cranes. SHOOSMITH, G. T., and CLARKE, CHAPMAN & CO., Ltd. Jan. 20,1943, No. 1011.. [Class 78 (iv)] A luffing crane has its jib k and pivot kx so arranged in relation to the mast or post a that the jib can be luffed about its pivot through an arc extending on each side of the vertical plane containing the pivot and the jib when the latter is at its highest position, the head l of the jib travelling in a plane which is clear of the post a. During the luffing movement the load travels in the path indicated by broken lines in Figs. 1 and 3. In order to give a fair lead to the hoisting rope n during the luffing movement it is passed over a pulley j carried by a swivelling fork i and over a jib-head pulley m carried by a swivelling fork l, the two forks being connected together by telescopic lihks o, o<1> so that the pulleys j, m are always in the same plane as one another, the swivelling movement of the forks permitting this. In order to secure level luffing, the hoisting rope n passes from the winding drum y over a slidable sheave w, a sheave u which may be fixed or connected to weighing gear v, as shown, and over the sheaves j, m; the sheave w is mounted in a bridle z connected by a rope 1, passing over sheaves 2, 3, j<1>, to a member p' of the rod o<1> secured to the jib-head fork l. In the construction shown the distance between the jib pivot kx and the sheaves j, j<1> is about one-third of the length of the jib. The jib is balanced by a weight rand is luffed by means of a motor-driven pinion t engaging a toothed sector s on the jib. Alternatively, the jib may be luffed by crank-gear, ropes, or hydraulic means. The crane post a rotates in a roller ring e and is slewed by a motordriven pinion engaging a gear-wheel f on the post.
GB101143A 1943-01-20 1943-01-20 Luffing and slewing crane Expired GB562517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB101143A GB562517A (en) 1943-01-20 1943-01-20 Luffing and slewing crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB101143A GB562517A (en) 1943-01-20 1943-01-20 Luffing and slewing crane

Publications (1)

Publication Number Publication Date
GB562517A true GB562517A (en) 1944-07-05

Family

ID=9714582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB101143A Expired GB562517A (en) 1943-01-20 1943-01-20 Luffing and slewing crane

Country Status (1)

Country Link
GB (1) GB562517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1556967B1 (en) * 1961-12-16 1970-06-25 Atlas Mak Maschb Gmbh Loading device for ships

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1556967B1 (en) * 1961-12-16 1970-06-25 Atlas Mak Maschb Gmbh Loading device for ships

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