US3335876A - Collapsible tower crane - Google Patents

Collapsible tower crane Download PDF

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Publication number
US3335876A
US3335876A US504367A US50436765A US3335876A US 3335876 A US3335876 A US 3335876A US 504367 A US504367 A US 504367A US 50436765 A US50436765 A US 50436765A US 3335876 A US3335876 A US 3335876A
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US
United States
Prior art keywords
tower
framework
horizontal axis
section
jib
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 - Lifetime
Application number
US504367A
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English (en)
Inventor
Durand Pierre
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.)
Richier SA
Original Assignee
Richier SA
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Filing date
Publication date
Application filed by Richier SA filed Critical Richier SA
Application granted granted Critical
Publication of US3335876A publication Critical patent/US3335876A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B66C23/344—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes adapted for transport purposes
    • 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
    • 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

Definitions

  • My invention has for its object the assembling and dismantling of cranes used for building purposes, which assembling and dismantling operations it is always desired to simplify with a view to reducing their duration and consequently to. reducing as much as possible the idle periods arising whenever it is necessary to move the crane from one building yard to another.
  • my invention comprises a mechanism which, allows a speedy expansion and collapse of the parts forming the crane, to wit in particular its tower and jib without dismantling either of said parts.
  • the tower of the crane being, as is well known per se, constituted by two sections pivotally secured to each other about a horizontal axis while the lower section is in turn pivotally secured about a horizontal axis extending through the framework rigid with a rotary platform
  • my invention consists in the following steps: I set the last-mentioned pivotal axis at a predetermined height above the lower end of said section, and I connect the upper section with the framework through a connecting rod pivotally secured to said upper section and to said framework, the connecting rod and upper section may form with the lower section of the mast or of the tower a deformable four-sided pivotal system, after which the lower end of the lower section of the tower is connected through a tackle with the raising and hoisting winch in order to provide respectively for the expansion and collapse of the tower through deformation of said four-sided pivotal system.
  • the jib is pivotally secured to the upper end of the upper section of the tower and is connected with the rotary system by means of a cable which can serve as a strut
  • the jib In order to reduce the bulk of the crane when in its folded or collapsed position, the jib includes also two pivotally interconnected sections the pivotal axis connecting which is vertical so as to allow the folding of said two sections against each other in a horizontal plane.
  • FIG. 1 is an elevational side view of the crane in its folded condition while only the post and the guys of the jib are illustrated in their normal position of use;
  • FIG. 2 is a view of the jib from above
  • FIGS. 3 and 4 are elevational side views of the crane, respectively during its expansion and in its position of use.
  • 2 designates the trailer carried by two axles and forming the chassis of the crane 1 said trailer is provided with jacks 3 adapted to engage the ground when the crane is in its operative position.
  • Said chassis 2 carries a rotary frame 4 of which the pivotal movement is obtained by an annular system of rollers 5.
  • the frame 2 carries in its turn a framework 6 formed by a trellis shaped structure carrying the actual tower 7, 8, the jib 10-12, the ballast 13 and a hoisting and control winch 14.
  • the tower includes two sections, the lower section 7 and the upper section 8, said sections being pivotally connected together about a horizontal axis 15.
  • the jib in- 3,335,876 Patented Aug.
  • connection of the tower with the rotary platform 4 is provided as follows: the lower section 7 of the tower is pivotally secured about an axis 18 located in the upper position of the framework 6, said axis 18 being located at a predetermined height above the lower end of the tower, which lower end is connected with the winch 14 by a tackle 19.
  • the framework 6 is provided with a further horizontal axis 21 to which is rotatably fitted one of the ends of a connecting rod 22 of which the other end is pivotally secured at '23 on the upper section 8 of the tower.
  • the two sections 7 and 8 of the tower define with said connecting rod 22 and with the framework 6 a four-sided deformable pivotal system the axes of which are shown at 15,18, 21 and 23.
  • the pivotal movement of the jib 10-12 about the pivotal axis 17 connecting it with the tower which pivotal movement makes said jib pass into a horizontal position during the expansion of the tower so as to be held in said horizontal position when the tower has reached its extended position, is obtained automatically by means of a cable 26 which is anchored on the one hand to the platform 4 and on the other hand, to the upper end of a post 27 carried by the jib, said cable passing over a pulley 31 carried by the inner section 10 of the jib.
  • the post 27 to which are anchored the two guys 28 and 29 carrying the two sections 10 and 12 of the jib may furthermore be folded back over the jib in the direction of the arrow 30 of FIG. 1 when the crane is in its collapsed position with a view to reducing the height of the collapsed crane.
  • a collapsible tower crane comprising a chassis, a framework carried by said chassis for rotation about an upright axis, a lower tower section pivotally mounted on the framework for vertical swinging movement about a fixed horizontal axis disposed a substantial distance above the lower end of the lower tower section, an upper tower section pivotally connected to the upper end of the lower tower section about a horizontal axis, a connecting rod one end of which is pivotally secured to the framework for vertical swinging movement about a fixed horizontal axis and the other end of which is pivotally-secured to the upper tower section about a horizontal axis so that the framework and the connecting rod and the two tower sections form a quadrilateral linkage having two fixed pivots carried by the framework and two vertically swinging pivots carried by the tower sections, and means acting against the lower end of the lower tower section a distance from its fixed horizontal axis to deform a quadilateral linkage to raise and lower the tower sections.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
US504367A 1965-02-15 1965-10-24 Collapsible tower crane Expired - Lifetime US3335876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR45628A FR1436638A (fr) 1965-02-15 1965-02-15 Procédé et mécanisme de développement et de repli des éléments de tour et de flèche d'une grue de bâtiment

Publications (1)

Publication Number Publication Date
US3335876A true US3335876A (en) 1967-08-15

Family

ID=8598444

Family Applications (1)

Application Number Title Priority Date Filing Date
US504367A Expired - Lifetime US3335876A (en) 1965-02-15 1965-10-24 Collapsible tower crane

Country Status (6)

Country Link
US (1) US3335876A (de)
CH (1) CH447529A (de)
DE (1) DE1481797A1 (de)
FR (1) FR1436638A (de)
GB (1) GB1067107A (de)
NL (1) NL6601530A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433368A (en) * 1966-12-23 1969-03-18 Richier Sa Collapsible crane
US3664516A (en) * 1970-07-30 1972-05-23 Armco Steel Corp Folding crane boom
US20140076835A1 (en) * 2011-05-10 2014-03-20 Liebherr-Werk Biberach Gmbh Rotating Tower Crane

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104681B1 (de) * 1970-07-06 1974-05-03 Serieye Daniel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB792667A (en) * 1954-11-22 1958-04-02 Andreasen & Company Ltd A Improvements relating to cranes
DE1040214B (de) * 1956-11-30 1958-10-02 Maschf Augsburg Nuernberg Ag Baukran mit am Turm angelenktem und an diesen anklappbarem Ausleger
FR71095E (fr) * 1957-03-06 1959-10-08 F Potain Et Cie Ets Perfectionnements aux grues pour chantiers et analogues

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB792667A (en) * 1954-11-22 1958-04-02 Andreasen & Company Ltd A Improvements relating to cranes
DE1040214B (de) * 1956-11-30 1958-10-02 Maschf Augsburg Nuernberg Ag Baukran mit am Turm angelenktem und an diesen anklappbarem Ausleger
FR71095E (fr) * 1957-03-06 1959-10-08 F Potain Et Cie Ets Perfectionnements aux grues pour chantiers et analogues

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433368A (en) * 1966-12-23 1969-03-18 Richier Sa Collapsible crane
US3664516A (en) * 1970-07-30 1972-05-23 Armco Steel Corp Folding crane boom
US20140076835A1 (en) * 2011-05-10 2014-03-20 Liebherr-Werk Biberach Gmbh Rotating Tower Crane
US9403665B2 (en) * 2011-05-10 2016-08-02 Liebherr-Werk Biberach Gmbh Rotating tower crane

Also Published As

Publication number Publication date
CH447529A (fr) 1967-11-30
NL6601530A (de) 1966-08-16
GB1067107A (en) 1967-05-03
DE1481797A1 (de) 1969-03-13
FR1436638A (fr) 1966-04-29

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