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US3306469A - Load hoisting tackle - Google Patents

Load hoisting tackle Download PDF

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Publication number
US3306469A
US3306469A US50444265A US3306469A US 3306469 A US3306469 A US 3306469A US 50444265 A US50444265 A US 50444265A US 3306469 A US3306469 A US 3306469A
Authority
US
United States
Prior art keywords
tackle
pulley block
carriage
pulley
strands
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
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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 US3306469A publication Critical patent/US3306469A/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
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/043—Block and tackle system with variable number of cable parts
    • 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

Definitions

  • the loads are generally hoisted by means of tackles having a variable number of strands, generally two or four strands, so as to allow the operator to modify the hoisting force or speed.
  • a change in the number of the strands is performed as illustrated in FIGS. 1 and 2 of the accompanying drawings by means of a pulley P adapted to occupy two positions for one of which (FIG. 1) said pulley engages the main tackle which corresponds to the case of a two-stranded tackle, while the other position (FIG. 2) corresponds to a securing of said pulley to the carriage C and consequently to a four-stranded tackle.
  • the passage from one position to the other is obtained by setting the carriage C at a suitable point of the jib of the crane, after which the pulley block is brought into contact with the carriage C and means are operated for the engagement or for the release of a pulley P as the case may be.
  • Said means are usually actuated starting from the operators cab through the agency of a mechanical control system and when the crane is no longer controlled from said cab, but say from ground or from some building through an electric remote control system, the operator is constrained to return into his cab so as to produce the desired change in the tackle and this increases the intricacy of the operation and leads obviously to a substantial loss of time.
  • My invention cuts out these drawbacks and allows ensuring said change in the tackle by means of an arrangement carried by said tackle and adapted to be controlled by a remote control system so as to be brought near an operator located at any desired point.
  • FIGS. 1 and 2 refer to prior art as already disclosed
  • FIG. 3 is a side view of the system including the carriage and the tackle in its two-stranded condition
  • FIGS. 4, 5 and 6 are front elevational views of the strap fitted on the carriage and of the pulley blocks shown respectively for two stranded conditions of the tackle and for its four-stranded condition and during the pas: sage between the two conditions.
  • FIG. 3 designate the strand distributing carriage which carries in accordance with my invention two parallel transverse spindles 3 to which are pivotally secured two levers 4 interconnected by a spring urging them against the stop 6.
  • Said levers 4 are provided with perforations 7 registering with each other and form together a sort of strap the opening of which flares downwardly, as shown at 8, said flaring being obtained by a bending of the outer ends of the levers 4 away from each other.
  • the main or lower pulley block includes two parallel sloping members pivotally carried by two coaxial transverse pivots 12. Said sloping members can occupy selectively two positions illustrated respectively in solid lines and in interrupted lines in FIG. 3.
  • auxiliary pulley block 13 As to the auxiliary pulley block 13, it carries above its pulley a transverse pin 14.
  • the auxiliary pulley block 13 engages the main pulley block 9, while the sloping members 10 occupy the position illustrated in solid lines.
  • the main pulley block 9 When it is desired subsequently to return to a twostranded condition, the main pulley block 9 is lowered again onto ground surface and its sloping members are returned into the position illustrated in interrupted lines in FIG. 3, the block being then raised in an empty condition up to the carriage 2.
  • the compound strap formed by said levers opens and releases thus the auxiliary pulley block 13 which returns into its lower position on the main pulley block 9.
  • the tackle is then lowered onto ground surface.
  • the sloping members are returned into their normal outwardly directed position illustrated in solid lines in FIG. 3.
  • a load-hoisting tackle chiefly for tower cranes and the like appliances comprising upper pulleys, a carriage carrying said upper pulleys, a compound strap including two downwardly flaring flanges separated by a gap and adapted to pivot away from each other round horizontal axes lying in their planes and perpendicular to the axes of the upper pulleys, elastic means urging the lower ends of the flanges towards each other, a main pulley block including at least one pulley and adapted to be connected selectively through two strands and four strands with the upper pulleys and two sloping members arranged symmetrically to either sides of a vertical plane perpendicular to the axis of the pulley of the main pulley block and adapted to rock each round a spindle parallel with last-mentioned axis between an outwardly directed inoperative position and an operative position for which said members are adapted to enter the gap between the flanges of the strap to urge said flanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Combined Means For Separation Of Solids (AREA)
US50444265 1965-06-22 1965-10-24 Load hoisting tackle Expired - Lifetime US3306469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR69046137A FR1451362A (fr) 1965-06-22 1965-06-22 Perfectionnement aux dispositifs de mouflage utilisés pour le levage des charges

Publications (1)

Publication Number Publication Date
US3306469A true US3306469A (en) 1967-02-28

Family

ID=9694502

Family Applications (1)

Application Number Title Priority Date Filing Date
US50444265 Expired - Lifetime US3306469A (en) 1965-06-22 1965-10-24 Load hoisting tackle

Country Status (6)

Country Link
US (1) US3306469A (fr)
CH (1) CH431868A (fr)
DE (1) DE1285152B (fr)
FR (1) FR1451362A (fr)
GB (1) GB1084005A (fr)
NL (1) NL6608577A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794185A (en) * 1971-04-05 1974-02-26 F Kroll Change-over unit for hoisting appliances
US3967735A (en) * 1974-01-28 1976-07-06 Alexander William Payne Cranes with look independent of sheave block
US3993287A (en) * 1973-02-09 1976-11-23 Linden-Alimak Ab Method and device of reblocking to an increased or reduced number of rope parts at a hoisting gear
ITMI20101302A1 (it) * 2010-07-15 2012-01-16 F B F Lli Butti S R L Dispositivo per variare automaticamente il sistema di taglia in apparecchi sollevatori, particolarmente per gru a torre.
WO2014103271A1 (fr) * 2012-12-25 2014-07-03 川崎重工業株式会社 Dispositif de chargement
US20220081266A1 (en) * 2020-09-17 2022-03-17 Manitowoc Crane Group France Double-reeved lifting device with a rotary locking mechanism
FR3114090A1 (fr) * 2020-09-16 2022-03-18 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme de verrouillage à loquet
EP4273085A1 (fr) * 2022-05-04 2023-11-08 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme amélioré de verrouillage à loquet
US11897738B2 (en) 2017-04-05 2024-02-13 Schlumberger Technology Corporation Hoisting system and method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084794A (en) * 1976-07-09 1978-04-18 B. E. Wallace Products Corporation Hoist or winch mechanism adapted for multiple variable rigging
FR2368431A1 (fr) * 1976-10-22 1978-05-19 Potain Sa Double mouflage automatique pour le chariot distributeur d'une grue a tour
JPS5624708Y2 (fr) * 1978-07-07 1981-06-10
DE2845874C2 (de) * 1978-10-21 1982-03-25 Elba Maschinenfabrik Kaiser GmbH & Co, 6670 St Ingbert Vorrichtung zum Umscheren des Hubseiles bei Kränen
DE3515155A1 (de) * 1985-04-26 1986-10-30 M.A.N.-Wolffkran GmbH, 7100 Heilbronn Umscher-seilrollenflasche
DE3515156A1 (de) * 1985-04-26 1986-10-30 M.A.N.-Wolffkran GmbH, 7100 Heilbronn Vorrichtung zum umscheren des hubseils bei einem kran mit einer auf einer hochgelegenen laufbahn verfahrbaren laufkatze
US6555155B2 (en) 1996-10-21 2003-04-29 Biozyme Systems, Inc. Method and apparatus for harvesting, digestion and dehydrating of krill hydrolysates and co-drying and processing of such hydrolysates
DE102021103746A1 (de) 2021-02-17 2022-08-18 Wilbert TowerCranes GmbH Umschervorrichtung, Verwendung eines Horizontalantriebs beim Umscheren eines Krans, Verfahren zum Umscheren eines Krans, Kran sowie Computerprogramm und computerlesbares Medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US840676A (en) * 1906-05-07 1907-01-08 George T Winnard Pulley-block.
US1436608A (en) * 1921-08-10 1922-11-21 Robert S Rodier Block and tackle apparatus
US2973942A (en) * 1958-08-18 1961-03-07 Morgan Engineering Co Multiple hoist apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH271724A (de) * 1949-08-03 1950-11-15 Stirniman Jun Franz Einrichtung an Hebezeugen, zum Ändern der Anzahl der lasthebenden Seilstränge im Seilgehänge.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US840676A (en) * 1906-05-07 1907-01-08 George T Winnard Pulley-block.
US1436608A (en) * 1921-08-10 1922-11-21 Robert S Rodier Block and tackle apparatus
US2973942A (en) * 1958-08-18 1961-03-07 Morgan Engineering Co Multiple hoist apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794185A (en) * 1971-04-05 1974-02-26 F Kroll Change-over unit for hoisting appliances
US3993287A (en) * 1973-02-09 1976-11-23 Linden-Alimak Ab Method and device of reblocking to an increased or reduced number of rope parts at a hoisting gear
US3967735A (en) * 1974-01-28 1976-07-06 Alexander William Payne Cranes with look independent of sheave block
ITMI20101302A1 (it) * 2010-07-15 2012-01-16 F B F Lli Butti S R L Dispositivo per variare automaticamente il sistema di taglia in apparecchi sollevatori, particolarmente per gru a torre.
WO2014103271A1 (fr) * 2012-12-25 2014-07-03 川崎重工業株式会社 Dispositif de chargement
JP2014125283A (ja) * 2012-12-25 2014-07-07 Kawasaki Heavy Ind Ltd 荷役装置
US11897738B2 (en) 2017-04-05 2024-02-13 Schlumberger Technology Corporation Hoisting system and method
EP4049960A1 (fr) * 2020-09-16 2022-08-31 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme de verrouillage à loquet
FR3114090A1 (fr) * 2020-09-16 2022-03-18 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme de verrouillage à loquet
US11591191B2 (en) 2020-09-16 2023-02-28 Manitowoc Crane Group France Double-reeved lifting device with a latch-locking mechanism
FR3114089A1 (fr) * 2020-09-17 2022-03-18 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme de verrouillage rotatif
EP4023585A1 (fr) * 2020-09-17 2022-07-06 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme de verrouillage rotatif
US11866309B2 (en) * 2020-09-17 2024-01-09 Manitowoc Crane Group France Double-reeved lifting device with a rotary locking mechanism
US20220081266A1 (en) * 2020-09-17 2022-03-17 Manitowoc Crane Group France Double-reeved lifting device with a rotary locking mechanism
EP4273085A1 (fr) * 2022-05-04 2023-11-08 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme amélioré de verrouillage à loquet
FR3135259A1 (fr) * 2022-05-04 2023-11-10 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme amélioré de verrouillage à loquet

Also Published As

Publication number Publication date
CH431868A (fr) 1967-03-15
GB1084005A (en) 1967-09-20
NL6608577A (fr) 1966-12-23
FR1451362A (fr) 1966-01-07
DE1285152B (de) 1968-12-12

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