FR2298505A1 - Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower - Google Patents

Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower

Info

Publication number
FR2298505A1
FR2298505A1 FR7501914A FR7501914A FR2298505A1 FR 2298505 A1 FR2298505 A1 FR 2298505A1 FR 7501914 A FR7501914 A FR 7501914A FR 7501914 A FR7501914 A FR 7501914A FR 2298505 A1 FR2298505 A1 FR 2298505A1
Authority
FR
France
Prior art keywords
tower
section
mobile
crab
suspended below
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.)
Granted
Application number
FR7501914A
Other languages
French (fr)
Other versions
FR2298505B3 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7501914A priority Critical patent/FR2298505A1/en
Publication of FR2298505A1 publication Critical patent/FR2298505A1/en
Application granted granted Critical
Publication of FR2298505B3 publication Critical patent/FR2298505B3/fr
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The telescopic jib for use with a tower crane has a mobile section(3) suspended below and sliding in relation to a fixed section (2), mounted on the tower(1), by means of one or more sets of rollers, so that in the retracted position its rear end is adjacent to the lower. The lifting crab(12) travels for the whole length of the mobile jib section, the movements of the two being so co-ordinated that the crab travels over the entire outreach range of the crane without leaving the mobile section. There can be a crab travel winch at the base of the tower, from which two ropes are reeved round pulleys at opposite ends of the jib sections to opposite sides of the crab.
FR7501914A 1975-01-22 1975-01-22 Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower Granted FR2298505A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7501914A FR2298505A1 (en) 1975-01-22 1975-01-22 Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7501914A FR2298505A1 (en) 1975-01-22 1975-01-22 Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower

Publications (2)

Publication Number Publication Date
FR2298505A1 true FR2298505A1 (en) 1976-08-20
FR2298505B3 FR2298505B3 (en) 1977-10-21

Family

ID=9150143

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7501914A Granted FR2298505A1 (en) 1975-01-22 1975-01-22 Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower

Country Status (1)

Country Link
FR (1) FR2298505A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296383A1 (en) * 1987-06-04 1988-12-28 Liebherr-Werk Biberach GmbH Turnable tower crane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296383A1 (en) * 1987-06-04 1988-12-28 Liebherr-Werk Biberach GmbH Turnable tower crane

Also Published As

Publication number Publication date
FR2298505B3 (en) 1977-10-21

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Legal Events

Date Code Title Description
ST Notification of lapse