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GB1217450A - Improvements in or relating to tower cranes - Google Patents

Improvements in or relating to tower cranes

Info

Publication number
GB1217450A
GB1217450A GB1951169A GB1951169A GB1217450A GB 1217450 A GB1217450 A GB 1217450A GB 1951169 A GB1951169 A GB 1951169A GB 1951169 A GB1951169 A GB 1951169A GB 1217450 A GB1217450 A GB 1217450A
Authority
GB
United Kingdom
Prior art keywords
jib
tower
base
bars
counter
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
GB1951169A
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.)
EDILMAC SpA
Original Assignee
EDILMAC SpA
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 EDILMAC SpA filed Critical EDILMAC SpA
Publication of GB1217450A publication Critical patent/GB1217450A/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

1,217,450. Self-erecting mobile tower cranes. EDILMAC S.p.A. 16 April, 1969 [18 April, 1968], No. 19511/69. Heading B8B. A tower crane, Fig. 3, comprises a base 1 carrying a telescopic tower 4, 5 with a rotatable platform 6 mounting a jib 7 and counter-jib 9 provided with a counterweight 10. A hoist 3 connects the lower end of the tower to the base 1. Two pairs of bars 13, 14 are pivoted at 11, 12 to the base 1 and at 15, 16 to the same side of the tower. The jib 7 is in two sections connected by a vertical hinge 19, the counter-jib 9 being connected to head 17 by a vertical hinge 20. A horizontal hinge 21 articulates the jib 7 on the head 17. For erection from the collapsed position, Fig. 1, the jib 7 and counter-jib are unfolded and cable 22 connected between point 11 on the base 1 and a point 24 on the jib 7. The hoist cable is then wound in by the hoist 3 to erect the crane. The cable 22 maintains the jib 7 and counter-jib 9 horizontal, while the bars 13, 14 guide the tower, which effectively rotates about the (instantaneous) hinge centre at their intersection. Fig. 2 shows an intermediate stage in the erection. In a modification, Fig. 5 (not shown) the bars 13, 14 are attached to opposite sides of the tower. This results in the crane being somewhat above the base 1 for transport. In a further modification, Figs. 6 to 9 (not shown) the ends of the bars 13 are able to slide along the base 1 so that in the transportation position the crane is nearer to the base 1 than in the embodiment of Fig. 5.
GB1951169A 1968-04-18 1969-04-16 Improvements in or relating to tower cranes Expired GB1217450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT831838 1968-04-18

Publications (1)

Publication Number Publication Date
GB1217450A true GB1217450A (en) 1970-12-31

Family

ID=11126354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1951169A Expired GB1217450A (en) 1968-04-18 1969-04-16 Improvements in or relating to tower cranes

Country Status (1)

Country Link
GB (1) GB1217450A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2167464A1 (en) * 1972-01-14 1973-08-24 Potain Sa
DE3150282A1 (en) * 1981-12-18 1983-06-30 Liebherr-Werk Biberach Gmbh, 7950 Biberach Underbody for a crane
US4759685A (en) * 1985-05-30 1988-07-26 Toyota Jidosha Kabushiki Kaisha Vehicle for aerial working
ES2374015A1 (en) * 2009-02-05 2012-02-13 Linden Comansa, S.L. Gr¿a torre sin c¿spide. (Machine-translation by Google Translate, not legally binding)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2167464A1 (en) * 1972-01-14 1973-08-24 Potain Sa
DE3150282A1 (en) * 1981-12-18 1983-06-30 Liebherr-Werk Biberach Gmbh, 7950 Biberach Underbody for a crane
US4759685A (en) * 1985-05-30 1988-07-26 Toyota Jidosha Kabushiki Kaisha Vehicle for aerial working
ES2374015A1 (en) * 2009-02-05 2012-02-13 Linden Comansa, S.L. Gr¿a torre sin c¿spide. (Machine-translation by Google Translate, not legally binding)

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