GB923260A - Folding tower cranes - Google Patents

Folding tower cranes

Info

Publication number
GB923260A
GB923260A GB1736361A GB1736361A GB923260A GB 923260 A GB923260 A GB 923260A GB 1736361 A GB1736361 A GB 1736361A GB 1736361 A GB1736361 A GB 1736361A GB 923260 A GB923260 A GB 923260A
Authority
GB
United Kingdom
Prior art keywords
tower
cable
jib
winch
raised
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
GB1736361A
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.)
F Potain and Cie
Original Assignee
F Potain and Cie
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 F Potain and Cie filed Critical F Potain and Cie
Publication of GB923260A publication Critical patent/GB923260A/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
    • B66C23/26—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 for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes

Landscapes

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

Abstract

923,260. Collapsible mobile tower-cranes. ETABLISSEMENTS F. POTAIN & CIE. May 12, 1961 [May 18, 1960], No. 17363/61. Class 78 (4). As the tower 5a, Fig. 1, of a crane is raised into a vertical position the jib 7 is swung into a horizontal position by a member 11. As described, the member 11 is a cable, connected between a bracket 12 on a support 3 and a point 10 on a jib-carrying head 6, which tightens as the tower is raised by a winch 13. the part 5b of the tower telescopes within the part 5a. Two cables 11 may be provided, one on each side, or a single cable may be passed round two pulleys on the head 6, the ends being attached to the supports 3. In the embodiment shown in Fig. 6, a cable 11, which is initially taut, extends between points 10 and 12 and passes over pulleys 17, 18 mounted on the tower. In Fig. 9 a rigid strut 21 is connected between a pivot 20 on a bracket 19 on the jibcarrying bead 6 and a pivot 22 on the support 3, to form a parallel linkage with the tower. In a modification of this embodiment the strut 21 is arranged above the tower instead of below it when the tower is horizontal. In Fig. 11 the tower is mounted on brackets 3a and raised by a winch 13 and cable 14, a similar parallel link 21 being provided. In Fig. 12 a cable 11 which raises the jib does not form a parallel linkage with the tower. To compensate for this the cable 11 is wound on a subsidiary drum of a winch 24 which also raises the tower by means of a cable 14.
GB1736361A 1960-05-18 1961-05-12 Folding tower cranes Expired GB923260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR40448A FR1265264A (en) 1960-05-18 1960-05-18 Improvements to folding cranes

Publications (1)

Publication Number Publication Date
GB923260A true GB923260A (en) 1963-04-10

Family

ID=8593956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1736361A Expired GB923260A (en) 1960-05-18 1961-05-12 Folding tower cranes

Country Status (6)

Country Link
AT (1) AT223347B (en)
BE (1) BE603778A (en)
CH (1) CH367957A (en)
DE (1) DE1242826B (en)
FR (1) FR1265264A (en)
GB (1) GB923260A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1246967B (en) * 1961-07-31 1967-08-10 F Potain & Cie S A Ets Tower crane with a trolley jib
DE1248257B (en) * 1962-04-06 1967-08-24 Potain & Cie Ets F Boom tower crane
DE1205674B (en) * 1962-04-25 1965-11-25 Richier Sa Tower crane
DE1240639B (en) * 1962-07-30 1967-05-18 Richier Sa Tower crane
FR2096646B1 (en) * 1970-04-07 1974-10-31 Noly Jean
FR2126128B1 (en) * 1971-02-26 1975-06-06 Esteve Andre
SU479720A1 (en) * 1973-02-13 1975-08-05 Одесский ордена Трудового Красного Знамени политехнический институт Jib crane with jib control

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1022749A (en) * 1950-08-02 1953-03-09 Training in lifting devices

Also Published As

Publication number Publication date
BE603778A (en) 1961-09-01
CH367957A (en) 1963-03-15
AT223347B (en) 1962-09-10
DE1242826B (en) 1967-06-22
FR1265264A (en) 1961-06-30

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