GB948395A - Improved crane - Google Patents

Improved crane

Info

Publication number
GB948395A
GB948395A GB4034061A GB4034061A GB948395A GB 948395 A GB948395 A GB 948395A GB 4034061 A GB4034061 A GB 4034061A GB 4034061 A GB4034061 A GB 4034061A GB 948395 A GB948395 A GB 948395A
Authority
GB
United Kingdom
Prior art keywords
jib
piston
cylinder
ram
luffed
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
GB4034061A
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.)
HENRI RICOUARD
Original Assignee
HENRI RICOUARD
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 HENRI RICOUARD filed Critical HENRI RICOUARD
Publication of GB948395A publication Critical patent/GB948395A/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
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • 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
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
    • 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
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • 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
    • B66C2700/0392—Movement of the crane arm; Coupling of the crane arm with the counterweights; Safety devices for the movement of the arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/06—Cranes in which the lifting movement is done with a hydraulically controlled plunger
    • B66C2700/062—Cranes in which the lifting movement is done with a hydraulically controlled plunger mounted on motor vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)

Abstract

948,395. Telescopic jib cranes. P. J. M. T. ALLARD, and H. RICOUARD. Nov. 10, 1961 [Nov. 10, 1960], No. 40340/61. Headings B8B and B8H. The length of the telescopic jib of a crane is adjusted automatically as the jib is luffed so that the outer end of the jib moves along a substantially vertical fixed line. As shown in Fig. 1, the jib is luffed about pivots 4 on the base frame 1 by an hydraulic ram 8 and comprises an inner arm 6 provided with a hook 22 and slidably mounted within an outer arm 5. Mounted within the arm 6 there is a ram comprising a cylinder 11 having a partition 14 to provide two chambers in which pistons 15, 16 are movable. Piston rods 17, 18 are secured at 19, 20 to the arms 5, 6 respectively. Flexible pipes a, b connect opposite sides of the piston 16 to opposite sides of the piston 28 of a ram 24 pivoted at 29, 26 to the jib and brackets la on the base 1. The effective piston areas of the pistons 15, 28 are equal and it is stated that by suitable positioning of the pivot points 26, 29, the displacement of the piston 28 as the jib is luffed produces a corresponding displacement of the cylinder 11 so as to maintain the centre C of a hook 22, which is secured to the cylinder 11 approximately on the vertical line V. The ram constituted by the left-hand end of cylinder 11 is supplied through flexible pipes c, d and controlled individually by the driver to vary the length of the jib independently of the automatic adjustment movement. In a modification, Fig. 3 (not shown), the cylinder of ram 24 is rigidly secured to the jib adjacent the pivot point 4 and the piston-rod carries a roller which engages in a fixed rigid vertical guide.
GB4034061A 1960-11-10 1961-11-10 Improved crane Expired GB948395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR843692A FR1279493A (en) 1960-11-10 1960-11-10 Advanced crane

Publications (1)

Publication Number Publication Date
GB948395A true GB948395A (en) 1964-02-05

Family

ID=8742528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4034061A Expired GB948395A (en) 1960-11-10 1961-11-10 Improved crane

Country Status (5)

Country Link
BE (1) BE609796A (en)
DE (1) DE1179347B (en)
FR (1) FR1279493A (en)
GB (1) GB948395A (en)
LU (1) LU40776A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759058A1 (en) * 1977-01-12 1978-07-13 Smith Jun DEVICE FOR LIFTING AND LOWERING LOADS
DE2846470A1 (en) * 1977-10-27 1979-05-17 Gen Cable Corp LIFTING DEVICE WITH TELESCOPIC BOOM WITH AUTOMATIC EXTENSION LIMITATION
DE2935944A1 (en) * 1979-09-06 1981-03-26 Messerschmitt-Bölkow-Blohm GmbH, 85521 Ottobrunn Derricking and telescopic crane jib - has motor simultaneously coupled to jib and derricking ram control spindle
DE3041826A1 (en) * 1980-11-06 1982-05-13 Anton Ruthmann Gmbh & Co, 4423 Gescher Mobile overhead working platform - has screwed spindle turned by boom extension movement actuating safety switch
GB2416344A (en) * 2004-07-22 2006-01-25 Bamford Excavators Ltd Method of operating a machine which has a telescoping boom mounted thereon

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1506519C2 (en) * 1965-04-08 1974-10-31 Grove Manufacturing Company, Shady Grove, Pa. (V.St.A.) Telescopic boom
US3396860A (en) * 1966-04-12 1968-08-13 Hein Werner Corp Excaator and grader or crane apparatus
GB1393225A (en) * 1972-09-21 1975-05-07 Int Harvester Co Cranes
DE8906752U1 (en) * 1989-06-02 1989-08-31 Schneider, Hans, 7070 Schwäbisch Gmünd Lifting and transport device for sick people
DE59202474D1 (en) * 1991-02-11 1995-07-20 Liebherr Werk Ehingen Telescopic boom for mobile cranes or the like
DE202017001848U1 (en) 2017-04-06 2018-07-09 Liebherr-Werk Bischofshofen Gmbh Mobile work machine, in particular wheel loader for timber handling

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067995B (en) * 1959-10-29
US2860793A (en) * 1953-07-27 1958-11-18 Clark Equipment Co Tractor shovel
DE1032907B (en) * 1955-10-06 1958-06-26 Kampnagel Ag Luffing crane with hydrostatic hoist drive
US2911111A (en) * 1956-11-27 1959-11-03 John L Grove Mobile hydraulic crane

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759058A1 (en) * 1977-01-12 1978-07-13 Smith Jun DEVICE FOR LIFTING AND LOWERING LOADS
DE2846470A1 (en) * 1977-10-27 1979-05-17 Gen Cable Corp LIFTING DEVICE WITH TELESCOPIC BOOM WITH AUTOMATIC EXTENSION LIMITATION
DE2935944A1 (en) * 1979-09-06 1981-03-26 Messerschmitt-Bölkow-Blohm GmbH, 85521 Ottobrunn Derricking and telescopic crane jib - has motor simultaneously coupled to jib and derricking ram control spindle
DE3041826A1 (en) * 1980-11-06 1982-05-13 Anton Ruthmann Gmbh & Co, 4423 Gescher Mobile overhead working platform - has screwed spindle turned by boom extension movement actuating safety switch
GB2416344A (en) * 2004-07-22 2006-01-25 Bamford Excavators Ltd Method of operating a machine which has a telescoping boom mounted thereon
EP1619161A1 (en) * 2004-07-22 2006-01-25 J.C. Bamford Excavators Limited Method of and machine with device for limiting boom radius

Also Published As

Publication number Publication date
BE609796A (en) 1962-02-15
DE1179347B (en) 1964-10-08
FR1279493A (en) 1961-12-22
LU40776A1 (en) 1962-01-03

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