US3189189A - Collapsible crane with interiorly housed jib - Google Patents

Collapsible crane with interiorly housed jib Download PDF

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Publication number
US3189189A
US3189189A US290443A US29044363A US3189189A US 3189189 A US3189189 A US 3189189A US 290443 A US290443 A US 290443A US 29044363 A US29044363 A US 29044363A US 3189189 A US3189189 A US 3189189A
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US
United States
Prior art keywords
jib
crane
stem
stem portion
housed
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
US290443A
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English (en)
Inventor
Waerum Julius Nicolaj Meyer
Krex Helge Fjnar
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.)
BYGGERIETS MASKINSTATIONER AS
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BYGGERIETS MASKINSTATIONER AS
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
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Publication of US3189189A publication Critical patent/US3189189A/en
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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
    • B66C23/342—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes with telescopic elements
    • 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

  • Cranes of this type are e.g. used as building cranes, and the purpose of the subdivision of the crane stem is to facilitate transportation of the crane, the crane being transported in folded-up position either on a separate carriage or upon its own base, which is in that case provided with supporting wheels.
  • the crane stem is folded up in such a manner that the parts will be located one above the other, and the jib is then titled down towards the upper part of the crane stem so that it will be supported on top of the folded-up crane parts.
  • the crane will take up considerable space in the vertical direction which may be of inconvenience in the transportation of the crane e.g. under bridges and viaducts or through gateways.
  • the object of the invention to devise a crane of the type referredto, which takes up relatively little space in the vertical direction in folded-up position.
  • the jib is slidably connected with the stem, and the upper part of the stem has a clearance which is greater than the cross section of the jib, said upper part being provided interiorly with longitudinal guide rails for co-operation with guide means on said jib.
  • the jib can be slid into the upper part of the crane stem whereby the crane will take up relatively little space in the vertical direction in folded-up position.
  • the jib may, according to the invention, be pivotably connected with the crane stem at the end of the guide rails.
  • a toothed rack may be mounted on the jib for engagement with a matching gear wheel mounted at the upper end of the upper part of the stem.
  • the said toothed rack and matching gear wheel may be used as a lock between the jib and the crane stem so that the jib is prevented from sliding out of the upper part of the crane stem during transportation.
  • FIG. 1 shows one form of a crane according to the invention in working position
  • FIG. 2 shows the crane of FIG. 1 in position for transport-ation
  • FIGS. 3 and 4 disclose two different positions assumed by the crane in the process of changing same from working to transportation position
  • FIG. 5 shows, on a larger scale, a section along the line V-V in FIG. 1.
  • the stem of the crane illustrated in the drawing consists of two parts 1 and 2.
  • a jib 3 is pivotably connected to the upper end of the upper part 1.
  • the parts 1 and 2 are pivotably connected with each other by means of a hinge 4.
  • the upper part 1 is hollow and has a clearance greater than the cross section of the jib 3.
  • a pair of 3,l89 ,l89' Patented June 15, 1965 "ice guide rails 5 are mounted in opposite positions interiorly of the upper part.
  • the jib 3 is pivoted at 13 directly above the upper end of the rails 5 to an upper portion of the part 1.
  • the jib may be mounted in a bearing, e.g. at one side of the part 1.
  • the lower part of the crane stem is carried by a carriage 6.
  • the jib 3 When changing the crane from the working position illustrated in FIG. 1 to the position of transportation illustrated in FIG. 2, the jib 3 is first tilted to vertical position as illustrated in FIG. 3, and thereafter the pivotal connections 13 between the jib 3 and the upper part 1 of the crane stem is released, whereafter the jib is slid into the part 1.
  • the jib is provided at its inner end with guide means, e.g. in the form of rollers 8, FIG. 5, engaging with the guide rails 5 which may e.g. be of U-shaped cross section.
  • guide means e.g. in the form of rollers 8, FIG. 5
  • the crane stem When the jib has been slid to the position illustrated in FIG. 4, the crane stem is folded about its hinge 4 and about a hinge 7 between thelower part 2 and the carriage 6, so that the crane will assume the position illustrated in FIG. 2.
  • a gear wheel 9 may be mounted at the top of the part 1 for engagement with a toothed rack 10, mounted on the jib 3, said gear wheel and toothed rack also serving to lock the jib relative to the part 1 in the position of transportation illustrated in FIG. 2.
  • the gear wheel 9 may be controlled by any suitable machanically or manually operated means such as a sprocket attached to said gear wheel and connected by means of a chain 11 with a hand crank operated sprocket 12.
  • a crane comprising a stem which consists of an upper stem portion and a lower stern portion, means pivotally connecting said stem portions to enable them to be folded from extended substantially aligned positions to collapsed positions alongside of each other, said upper stem portion being substantially hollow, a jib of crosssectional dimensions somewhat smaller than those of the interior of said upper hollow stem portion so as to be housed within the latter, means for mounting said jib for sliding telescopically within said upper stem portion from housed position to an upwardly extending working position, and means for pivotally supporting said jib upon said upper stem portion when in such working position.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
US290443A 1962-07-03 1963-06-25 Collapsible crane with interiorly housed jib Expired - Lifetime US3189189A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK296962AA DK97155C (da) 1962-07-03 1962-07-03 Kran med udligger.

Publications (1)

Publication Number Publication Date
US3189189A true US3189189A (en) 1965-06-15

Family

ID=8117674

Family Applications (1)

Application Number Title Priority Date Filing Date
US290443A Expired - Lifetime US3189189A (en) 1962-07-03 1963-06-25 Collapsible crane with interiorly housed jib

Country Status (3)

Country Link
US (1) US3189189A (da)
DK (1) DK97155C (da)
GB (1) GB1001049A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266598A (en) * 1964-09-22 1966-08-16 Frederick M Henne Portable hoist
US3863773A (en) * 1972-07-10 1975-02-04 Liebherr Hans Rotary tower crane suitable for highway transportation
FR2947806A1 (fr) * 2009-07-07 2011-01-14 Airbus Operations Sas Systeme de manutention d'un equipement exterieur d'avion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040214B (de) * 1956-11-30 1958-10-02 Maschf Augsburg Nuernberg Ag Baukran mit am Turm angelenktem und an diesen anklappbarem Ausleger
GB805399A (en) * 1956-03-29 1958-12-03 Mullard Radio Valve Co Ltd Improvements in electron discharge tubes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB805399A (en) * 1956-03-29 1958-12-03 Mullard Radio Valve Co Ltd Improvements in electron discharge tubes
DE1040214B (de) * 1956-11-30 1958-10-02 Maschf Augsburg Nuernberg Ag Baukran mit am Turm angelenktem und an diesen anklappbarem Ausleger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266598A (en) * 1964-09-22 1966-08-16 Frederick M Henne Portable hoist
US3863773A (en) * 1972-07-10 1975-02-04 Liebherr Hans Rotary tower crane suitable for highway transportation
FR2947806A1 (fr) * 2009-07-07 2011-01-14 Airbus Operations Sas Systeme de manutention d'un equipement exterieur d'avion

Also Published As

Publication number Publication date
GB1001049A (en) 1965-08-11
DK97155C (da) 1963-10-21

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