GB965025A - Improvements in or relating to foldable tower cranes - Google Patents

Improvements in or relating to foldable tower cranes

Info

Publication number
GB965025A
GB965025A GB2852962A GB2852962A GB965025A GB 965025 A GB965025 A GB 965025A GB 2852962 A GB2852962 A GB 2852962A GB 2852962 A GB2852962 A GB 2852962A GB 965025 A GB965025 A GB 965025A
Authority
GB
United Kingdom
Prior art keywords
jib
tower
raised
cable
winch
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
GB2852962A
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
Priority claimed from FR41778A external-priority patent/FR1303522A/en
Application filed by F Potain and Cie filed Critical F Potain and Cie
Publication of GB965025A publication Critical patent/GB965025A/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
    • 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

965,025. Erecting folding tower-cranes. ETABLISSEMENTS F. POTAIN & CIE. July 25, 1962 [July 31, 1961; Oct. 13, 1961], No. 28529/62. Heading B8B. A folding tower crane is erected by attaching the lifting hook to the base 1, Fig. 2, with the crab 9 near the outer end of the jib and by means of the lifting cable 15 maintaining the jib horizontal against a tendency to rise caused by a counterweight 7 whilst the tower 4 is raised to a vertical position by a winch 10 and cable 11. In a first embodiment the load hoisting winch is locked and as the tower is raised the crab 9 is displaced inwardly to maintain the jib horizontal. In a second embodiment, Figs. 5-7 (not shown), the crab 9 is held near the outer tip of the jib and the load hoisting winch is operated to pay out the hoisting cable thereby holding the jib horizontal as the tower is raised. In a further embodiment, Fig. 8, the lifting hook is attached to the base 1 as before and the tower is partly raised so that the counter-jib 23 can be swung out from under the tower and then lowered so that the counter-jib reaches the position shown in Fig. 10. In this position a cable 29 is connected between an upright 27 and the counter jib 23 and the jib is connected to the upright 27 by a tie-rod 28. The tower is now raised by the winch 10 and the jib is maintained horizontal by either of the methods described above. During this step a post 6 rises progressively and a pulley 25 engages the cable 29. At the end of this movement a locking hook 30, Fig. 13, rides up over a pin 27a and drops down to engage it thereby uniting parts 6 and 27. After the parts have been locked together by conventional means, and the hook 20 freed from the base, the telescopic part of the tower is raised. The cranes described in the first and second embodiments may also have telescopic towers.
GB2852962A 1961-07-31 1962-07-25 Improvements in or relating to foldable tower cranes Expired GB965025A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR41778A FR1303522A (en) 1961-07-31 1961-07-31 Refinements to folding mast cranes
FR69041931 1961-10-13

Publications (1)

Publication Number Publication Date
GB965025A true GB965025A (en) 1964-07-29

Family

ID=45926961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2852962A Expired GB965025A (en) 1961-07-31 1962-07-25 Improvements in or relating to foldable tower cranes

Country Status (2)

Country Link
ES (1) ES279640A1 (en)
GB (1) GB965025A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631988A (en) * 1969-05-12 1972-01-04 Jean Noly Self-propelled crane
US3760953A (en) * 1971-09-27 1973-09-25 Misitano Ag Self-erecting crane to be towed by a truck
FR2756551A1 (en) * 1996-12-03 1998-06-05 Potain Sa METHOD AND DEVICE FOR MOUNTING THE TIE RODS OF TOWER CRANE BOOMS
FR2788758A1 (en) * 1999-01-27 2000-07-28 Potain Sa METHOD AND DEVICE FOR MOUNTING THE MASTER HEAD OF TOWER CRANES

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631988A (en) * 1969-05-12 1972-01-04 Jean Noly Self-propelled crane
US3760953A (en) * 1971-09-27 1973-09-25 Misitano Ag Self-erecting crane to be towed by a truck
FR2756551A1 (en) * 1996-12-03 1998-06-05 Potain Sa METHOD AND DEVICE FOR MOUNTING THE TIE RODS OF TOWER CRANE BOOMS
EP0846650A1 (en) * 1996-12-03 1998-06-10 Potain Method and device for mounting jib tension elements on tower cranes
FR2788758A1 (en) * 1999-01-27 2000-07-28 Potain Sa METHOD AND DEVICE FOR MOUNTING THE MASTER HEAD OF TOWER CRANES
EP1024106A1 (en) * 1999-01-27 2000-08-02 Potain Method and device for mounting of the top of the tower of tower cranes
US6422408B1 (en) 1999-01-27 2002-07-23 Potain Method and device for mounting the masthead of tower cranes

Also Published As

Publication number Publication date
ES279640A1 (en) 1962-11-01

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