US3327871A - Tower cranes - Google Patents

Tower cranes Download PDF

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Publication number
US3327871A
US3327871A US504441A US50444165A US3327871A US 3327871 A US3327871 A US 3327871A US 504441 A US504441 A US 504441A US 50444165 A US50444165 A US 50444165A US 3327871 A US3327871 A US 3327871A
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US
United States
Prior art keywords
jib
tower
hoisting
winch
short
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
US504441A
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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
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 Richier SA filed Critical Richier SA
Application granted granted Critical
Publication of US3327871A publication Critical patent/US3327871A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66C23/28—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 constructed to operate at successively higher levels
    • B66C23/283—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 constructed to operate at successively higher levels with frameworks composed of assembled elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/14—Trolley or crane travel drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0385—Cranes with trolleys movable along adjustable or slewable arms

Definitions

  • the most advisable arrangement consists in resorting to a short auxiliary jib provided solely for such purposes and which is located generally at the upper end of the tower and is adapted to revolve around a vertical axis, so as to serve all the sides of the tower.
  • a short auxiliary jib provided solely for such purposes and which is located generally at the upper end of the tower and is adapted to revolve around a vertical axis, so as to serve all the sides of the tower.
  • my present invention allows eliminating this second winch or winch drum in cranes provided with a short jib to be used chiefly for adding extensions to the tower or removing such extensions for increasing or reducing correspondingly the height of the tower.
  • the short jib forms the stationary point to which the free end of the cable is anchored.
  • the cable passes freely over the short jib and its free end may serve for engaging an extension or for engagement with the short jib after passing over a tackle carrying a hook by which an extension is suspended.
  • FIGS. 1 and 2 are side views of the upper part of a tower crane respectively during normal working periods and during the hoisting of an extension with a view to increasing the height of the tower.
  • 2 designates the crane tower, 3 its conventional jib serving for the hoisting of loads, 4 the counterjib and 5 the short upper auxiliary jib serving for the raising of extensions such as 6 to be incorporated with the tower, so as to increase its heights.
  • 7 designates the hoisting winch of which the cable 8 passes in succession over the pulleys 9, 10, 11 and over the pulleys and tackle secured to the carriage 12.
  • the cable passes in its section lying beyond the carriage 12 over three pulleys 13, 14a, 14b of which the two latter are carried by the short jib provided with a terminal guide 15 engaged by the cable 8 the free end of which carries a hook 16.
  • winch 7 serves thus for hoisting selectively loads and extensions.
  • the free end of the cable may, beyond the pulley at the end of the short jib, pass over the pulley of a block carrying a hook from which an extension may be suspended, the cable passing beyond said pulley towards an anchoring point at the end of the short jib, so as to form thus a two-sided tackle.
  • a main jib carried by the tower adapted to incorporate extensions increasing its height
  • a short jib carried by the tower a carriage carried on the main jib for lengthwise movement along the main jib
  • a winch a single cable controlled by said winch and trained about the carriage to form a depending load-hoisting loop beneath the carriage, said single cable extending over the outer end of said short jib, and hoisting means carried by that portion of the cable which extends over the outer end of the short jib, said hoisting means being movable vertically relative to the main jib so as to move tower extensions vertically relative to the main jib.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US504441A 1965-06-14 1965-10-24 Tower cranes Expired - Lifetime US3327871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR46101A FR1449764A (fr) 1965-06-14 1965-06-14 Perfectionnement aux grues à tour

Publications (1)

Publication Number Publication Date
US3327871A true US3327871A (en) 1967-06-27

Family

ID=8598845

Family Applications (1)

Application Number Title Priority Date Filing Date
US504441A Expired - Lifetime US3327871A (en) 1965-06-14 1965-10-24 Tower cranes

Country Status (5)

Country Link
US (1) US3327871A (forum.php)
DE (1) DE1292349B (forum.php)
FR (1) FR1449764A (forum.php)
GB (1) GB1130459A (forum.php)
NL (1) NL6608163A (forum.php)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO347680B1 (en) * 2021-09-09 2024-02-19 Emox As Crane arm including quick connect/disconnect member, and system
CN114394534A (zh) * 2022-01-20 2022-04-26 湘西同富电力建设有限公司 一种电力工程作业用便携式吊升装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463394A (en) * 1945-10-17 1949-03-01 Carl B King Hoist
GB775128A (en) * 1953-09-22 1957-05-22 Tichauer Soc A Responsibilite Improvements in or relating to tower cranes
FR1296475A (fr) * 1961-08-01 1962-06-15 Appareil de levage à éléments ou panneaux assemblables, plus particulièrement grue à tour munie d'un bras auxiliaire tournant fixé sur la tête de la tour pour le montage de la grue elle-même

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1167115A (fr) * 1957-01-12 1958-11-20 Perfectionnement aux grues à tour surélevable par tronçons successifs
DE1905198U (de) * 1960-08-04 1964-11-26 Roberto Ing Calcagno Turmdrehkran od. dgl. hebevorrichtung.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463394A (en) * 1945-10-17 1949-03-01 Carl B King Hoist
GB775128A (en) * 1953-09-22 1957-05-22 Tichauer Soc A Responsibilite Improvements in or relating to tower cranes
FR1296475A (fr) * 1961-08-01 1962-06-15 Appareil de levage à éléments ou panneaux assemblables, plus particulièrement grue à tour munie d'un bras auxiliaire tournant fixé sur la tête de la tour pour le montage de la grue elle-même

Also Published As

Publication number Publication date
NL6608163A (forum.php) 1966-12-15
DE1292349B (de) 1969-04-10
GB1130459A (en) 1968-10-16
FR1449764A (fr) 1966-05-06

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