US3708037A - Three hydraulic lifting stages self-propelled crane which may be mounted - Google Patents

Three hydraulic lifting stages self-propelled crane which may be mounted Download PDF

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Publication number
US3708037A
US3708037A US00132377A US3708037DA US3708037A US 3708037 A US3708037 A US 3708037A US 00132377 A US00132377 A US 00132377A US 3708037D A US3708037D A US 3708037DA US 3708037 A US3708037 A US 3708037A
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Prior art keywords
stage
articulated
lifting
self propelled
levers
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US00132377A
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English (en)
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J Tranchero
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B66F9/0655—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom

Definitions

  • the main object of present invention is to provide in the specific field of the lifting apparatus mounted on motor vehicles and/or self propelled vehicles, a crane of limited dimensions, capable of reaching remarkable heights and suitable to satisfy the requirements of a plurality of uses connected to services concerning the electric lines; antifire services; services in the aeronautical field and any other requiring the rapid lifting up to 30 meters from the ground, and more.
  • the present invention also relates to a device including; one or two nacelles having a horizontal bottom and suitable for supporting two operators and the equipment necessary to effect the works at such a height or lower.
  • Another object of present invention is the construction of a crane of the aforesaid type which, without any pre-assembly and/or disassembly operation of auxiliary members, is always in condition to reach rapidly the maximum lift height or any other intermediate height, within its maximum development and the minimum height in its rest condition with the articulated assembly of its arms completely withdrawn.
  • a further object achieved by providing the crane according to the invention is the restraint, within limited dimensions, in rest condition, of the size of the machine which may be favorably mounted on the chassis of a transport motor vehicle.
  • the crane according to the invention is characterized in that it is supported by a bearing plate whose base comprises a pair of superimposed disks; the lower disk is firmly mounted on the chassis of the motor vehicle-trolley or other selfpropelled means, with its axis disposed vertically with respect to the vehicle plane; the other disk, superimposed and rotatably mounted with respect to the first disk is integral with a rugged fork shaped vertical projection within which is pivoted, with respect to same projection, the base of a hydraulic cylinder formingthe lifting member forthe first stage of the crane.
  • Said first stage is formed by a set of auto-compensating binate levers presenting one end pivoted to the fork branches and the other end pivoted on the ends of intermediate binate levers which with their opposed ends are pivoted on another set of levers actuable in a lifting movement by means of a second hydraulic jack;
  • a third stage is further articulated on the second stage and comprises a third hydraulic jack and relative linkages whose free ends carry the lifting members of the crane, e.g., one or a pair of nacelles with a horizontal bottom.
  • a further particular feature of the crane according to the invention resides in the fact that during the movement imposed tothe three stages forming the crane, both in the lifting and in the lowering phase of the stages, the different sets of levers move within the volume of an ideal prism whose base is defined by the ground bearing stable pointsof the transporting vehicle of said crane, giving to the lifting unit the greatest sta bility, for any liftingposition.
  • FIG. 1 is a side view of the crane according to the invention an
  • FIG. 2 in a different scale, illustrates one of the many structural variations of said crane, in a side view.
  • FIGS. 1 and 2 of I the drawings illustrate the crane schematically and in a side view and therefore they allow the identification of only one 'lever of each pair of parallel levers forming may be replaced by various different members or devices, in relation with the use requirements of the lift, and it may also be mounted at the upper end of the levers forming the second lifting stage, eliminating the third stage.
  • a chassis is firmly coupled the base 1 provided with the bearing plate means 2, 3 rotating around its axis through more than 360.
  • the fork support 4 is integral to the upper rotating section 3 of the bearing plate means and on the fork support are articulated:
  • the free endof piston 6a is engaged, through a pair of linkages 24 and a double articulation 6b, at about one-third of the length of the pair of levers9, forming the central arm.
  • the second vertex 8c of the triangular end 8b of the pair of levers 8 is articulated to one end of a pair of levers 10 which are articulated by their opposed ends at 11a to the telescopic column 11, 11b.
  • the hydraulic cylinder 12, with piston 13, is mountedwith its axis parallel to column 11, 11b and presents its base articulated at 11c on ears I4 integral to the base of column 11, while the end of piston 13 is articulated at 15a in the middle of bracket 15 integral with the freeend of member 1 lb of column 11.
  • the central arm 9 may also be formed as a single body instead of the two'parallel levers; in thiscase, its end 9d articulated at on column 11 is fork shaped and is large enough to allow the easy movement of same column, of cylinder 12 and of articulation 16a formed between ears 17 of column 11 and one end of tie rod 16 which with its opposed end is articulated at 16b on one of the ends ofthe pair of angle lever 18, 18a.
  • the first section 18: of said levers is articulated at 18b on bracket 15, while the ends of section 18a are articulated at 19a on, the angle support 19.
  • the base of the cylinder (not shown) of a third hydraulic jack is articulated on support 19 and the stem end of its piston 23 is articulated at 20a on a pair of levers 20 presenting in turn one end articulated at 190 to the end of support 19 and the opposed end articulated at 200 on terminal support 21.
  • a second pair of levers 22 co-operates with the pair of levers 20 and present their ends respectively articulated at 21a, on the sides of terminal support 21 and at 19d on support 19.
  • the nacelle B which may be replaced by any other member or device suitable or necessary to co-operate with the crane, is firmly coupled to support 21.
  • Tha pairs of levers or arms 20, 22 are preferably telescopic and hence adjustable in length by means of mechanical devices, directly controlled and independent from the crane operation.
  • the operation of the crane according to the invention is the following:
  • jack 12, 13 develops in length the same telecopic column 11, 11b which causes the angular movement of levers 16, 18, 18a, tie rods 25 and support 19 as well as the pairs of levers 20, 22 which lift the nacelle B or any other member or load carried by the terminal stage.
  • the assembly second lifting stage, operated by jack l2, 13 is characterized by the use of mechanically sliding telescopic column, operated by jack l2, 13 directly or hydraulically actuated, which through bracket causes the movement of levers 18, 18a and tie rods 25.
  • levers 20, 22 whether they are articulated to the nacelle B or on any other member or device, may be oriented the same in all the intermediate positions comprised between those of: minimum lifting Bl maximum lifting B6-minimum protruding arm B and maximum protruding arm B2.
  • the lift apparatus mounted as an example on trolley C, utilizes the first lifting stage only and there is no bearing plate 2, 3.
  • the hydraulic piston 5 base is articulated at 4x to a the trolley C base Cl while its stem 6 end discharges its thrust on arm 9 which has preferably a telescopic structure and carries, articulated at its end 9x the hunting member 30.
  • arm 10 is replaced by the hydraulic jack 3], 32 articulated at 8c to arm 8 and at 30a to the hunting member 30 which becomes hence controllable in the transverse position on the plane passing through arm 9 longitudinal axis.
  • Base 4 integral with trolley C is replaced to base 4 which in the preceding embodiment is carried by the bearing plate; one of the ends of levers 8 pair is articulated with respect to the free end of base 4 at and the 0pposed end of levers 8 engages at 8c, as already stated, the hydraulic cylinder 31 end.
  • the end of arm 9 engages at 9a the end of levers 7 and at 9b the crank of the pair of levers 8.
  • this variant uses the first stage of the crane shown on FIG. 1 and provides a machine capable of performances different from those of the first.
  • the load member 31 carried by the hunting arm 30 may be maintained constantly in the horizontal position during the lifting phase as well during the lowering phase.
  • the trolley C may be provided with an electric motor or an internal combustion engine for both the assembly transfer and for the feeding of the jack 5, 6 and 31, 32 pumps.
  • the variant shown in FIG. 2 is particularly suitable to provide a lift apparatus wherein the load member 31 assumes a fork structure.
  • a self propelled crane which may be mounted on motor vehicles, comprising three hydraulic lifting stages, characterized in that the first stage comprising a hydraulic cylinder and relative piston, is articulated on the upper member of a bearing plate, whose lower member is integrally mounted on a supporting base of the motor vehicle; the upper member of the bearing plate being integral with a fork support onto which are articulated two systems of pairs of lever (7, 8) carrying at their free end a second system of pairs of lever (9, 10); to the ends of the second lifting stage being articulated a telescopic column actuable through a second hydraulic cylinder; said column (11, 11b) being terminally provided with a bracket (15) and further carrying by articulation a second system of pairs of levers (16, 18, 18a, 25); to the free ends of levers (25, 18a) being articulated a support (19) with respect to which is articulated a third hydraulic cylinder (23) as well as telescopic pairs of lever (20, 22) at whose free ends is finally articulated an operator support member.
  • Self propelled crane according to claim 1, characterized in that in the condition of maximum vertical lifting all its members do not protrude beyond the perimeter defined by the bearing points of the base which supports it on the ground;
  • Self propelled crane according to claim 1, characterized in that the supporting column of the second stage (11, 11b) is telescopically extensible by the cooperating action of a hydraulic cylinder (12, 13) while its elements slide mechanically relatively to each other.
  • Self propelled crane according to claim 1, characterized in that the supporting column of the second stage (11, 11b) is telescopically extensible in length and is hydraulically directly actuatable.
  • the first stage comprises two pairs of levers (7, 8), one pair of which (8) is provided with a square end relatively to which are articulated the pairs of levers of stage (7) as well as tie rods pairs (10) cooperating together with pairs of levers (9) to the vertical stability of the column (11, 11b).
  • Self propelled crane according to claim-1 characterized in that in the completely lowered condition its articulations allows the crane to assume a completely turned positionupon the supporting base, with the supporting column (11, 11b) for the second stage in a ver-' 10.
  • Self propelled crane according to claim 1 characterized in that the supporting bearing plate (2, 3) having its lower member (2) firmly anchored totthe supporting base (A) of the motor vehicle presents its upper member (3) and the fork support (4) completely free to rotate through more than 360 in order to give to the crane an analogous rotation autonomy.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Jib Cranes (AREA)
US00132377A 1970-04-08 1971-04-08 Three hydraulic lifting stages self-propelled crane which may be mounted Expired - Lifetime US3708037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6817070 1970-04-08

Publications (1)

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US3708037A true US3708037A (en) 1973-01-02

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US00132377A Expired - Lifetime US3708037A (en) 1970-04-08 1971-04-08 Three hydraulic lifting stages self-propelled crane which may be mounted

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US (1) US3708037A (xx)
AT (1) AT309733B (xx)
CA (1) CA941793A (xx)
DE (1) DE2116842A1 (xx)
FR (1) FR2085928B1 (xx)
SE (1) SE373343B (xx)
YU (1) YU34501B (xx)
ZA (1) ZA712276B (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834488A (en) * 1972-11-06 1974-09-10 J Grove Aerial platform with articulating jib
US3963095A (en) * 1974-12-11 1976-06-15 Cam Industries, Inc. Auxiliary extension platform assembly support frame drive means for an aerial ladder assembly
US4053075A (en) * 1976-08-30 1977-10-11 Caterpillar Tractor Co. High lift mounting means for loader buckets
US4624340A (en) * 1984-11-16 1986-11-25 AB Sjolanders Smides & Mek. Verkstad Mobile working platform
US4667771A (en) * 1982-02-25 1987-05-26 Jacques Tranchero Vehicle transported selectively elevatable nacelle supporting lifting crane
US4770271A (en) * 1986-04-14 1988-09-13 Jacques Tranchero Transportable, articulated-arm crane
US4775029A (en) * 1987-10-08 1988-10-04 Jlg Industries, Inc. Collapsible tower boom lift
US5460246A (en) * 1993-08-23 1995-10-24 O'flaherty Finance Articulated aerial lift
US6086256A (en) * 1997-12-12 2000-07-11 Grove U.S. L.L.C. Telescopic jib bearing assembly with embossments
US20050123382A1 (en) * 2002-02-19 2005-06-09 Mogens Christensen Method of transportation of a wind turbine nacelle and use thereof
US20100140016A1 (en) * 2007-07-24 2010-06-10 Esko Raappana Vehicle and a lifting arm assembly
US20120043159A1 (en) * 2010-08-23 2012-02-23 Genie Industries, Inc. Apparatuses and methods for steering a vehicle

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2193719B1 (xx) * 1972-07-28 1976-03-12 Brun Jean Louis
DE2324503C2 (de) * 1973-05-15 1986-06-26 Jacques Piasco Cuneo Tranchero Fahrbarer Kran
FR2520715A1 (fr) * 1982-01-29 1983-08-05 Cadillon Chariot elevateur a bras telescopiques articules
US4674944A (en) * 1985-12-27 1987-06-23 Kidde, Inc. Forklift variable reach mechanism
IT8767273A0 (it) * 1987-04-03 1987-04-03 Tranchero Jacques Elevatore montato su veicolo,combinante organi a bracci articolati ed organi telescopici
GB8708123D0 (en) * 1987-04-04 1987-05-13 Aerial Access Equip Vehicle mounted access lift
FR2614014B1 (fr) * 1987-04-14 1989-06-09 Gibert Pierre Chariot de manutention a bras elevateur, a structure simplifiee
IT1234635B (it) * 1989-07-07 1992-05-26 Manitou Costr Ind Srl Gruppo cestello porta persone per elevatore semovente
BE1003344A4 (fr) * 1990-01-24 1992-03-03 Manitou Bf Sa Chariot elevateur a bras telescopique.
FR2690895A1 (fr) * 1992-05-07 1993-11-12 Manitou Bf Chariot de manutention électrique à bras télescopique.
US5913379A (en) * 1996-01-26 1999-06-22 Figgie International, Inc. Articulated aerial work platform system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100025A (en) * 1961-11-01 1963-08-06 John L Shennum Aerial lift device
US3132718A (en) * 1960-04-27 1964-05-12 Hunt Pierce Corp Power-operated boom structure
US3166153A (en) * 1962-06-20 1965-01-19 Christian H Reed Line truck lift for elevating lineman to overhead power lines
US3470980A (en) * 1968-02-05 1969-10-07 Jere F Irwin Hydraulic man-positioner
US3483948A (en) * 1967-11-03 1969-12-16 Walter E Thornton Trump Elevator-boom structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831589A (en) * 1956-02-28 1958-04-22 Glenn W Way Articulated boom for mobile crane
US3252542A (en) * 1963-12-13 1966-05-24 Walter E Thornton-Trump Articulated boom
DE1260734B (de) * 1965-08-06 1968-02-08 Forslund & Co Fabriks Ab Fahrzeugkran

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132718A (en) * 1960-04-27 1964-05-12 Hunt Pierce Corp Power-operated boom structure
US3100025A (en) * 1961-11-01 1963-08-06 John L Shennum Aerial lift device
US3166153A (en) * 1962-06-20 1965-01-19 Christian H Reed Line truck lift for elevating lineman to overhead power lines
US3483948A (en) * 1967-11-03 1969-12-16 Walter E Thornton Trump Elevator-boom structure
US3470980A (en) * 1968-02-05 1969-10-07 Jere F Irwin Hydraulic man-positioner

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834488A (en) * 1972-11-06 1974-09-10 J Grove Aerial platform with articulating jib
US3963095A (en) * 1974-12-11 1976-06-15 Cam Industries, Inc. Auxiliary extension platform assembly support frame drive means for an aerial ladder assembly
US4053075A (en) * 1976-08-30 1977-10-11 Caterpillar Tractor Co. High lift mounting means for loader buckets
US4667771A (en) * 1982-02-25 1987-05-26 Jacques Tranchero Vehicle transported selectively elevatable nacelle supporting lifting crane
US4624340A (en) * 1984-11-16 1986-11-25 AB Sjolanders Smides & Mek. Verkstad Mobile working platform
US4770271A (en) * 1986-04-14 1988-09-13 Jacques Tranchero Transportable, articulated-arm crane
US4775029A (en) * 1987-10-08 1988-10-04 Jlg Industries, Inc. Collapsible tower boom lift
US5460246A (en) * 1993-08-23 1995-10-24 O'flaherty Finance Articulated aerial lift
US6086256A (en) * 1997-12-12 2000-07-11 Grove U.S. L.L.C. Telescopic jib bearing assembly with embossments
US20050123382A1 (en) * 2002-02-19 2005-06-09 Mogens Christensen Method of transportation of a wind turbine nacelle and use thereof
US7793964B2 (en) * 2002-02-19 2010-09-14 Vestas Wind Systems A/S Method of transportation of a wind turbine nacelle and use thereof
US20100140016A1 (en) * 2007-07-24 2010-06-10 Esko Raappana Vehicle and a lifting arm assembly
US20120043159A1 (en) * 2010-08-23 2012-02-23 Genie Industries, Inc. Apparatuses and methods for steering a vehicle
US9434412B2 (en) * 2010-08-23 2016-09-06 Terex South Dakota, Inc. Apparatuses and methods for steering a vehicle

Also Published As

Publication number Publication date
SE373343B (sv) 1975-02-03
YU34501B (en) 1979-09-10
DE2116842A1 (de) 1971-10-21
AT309733B (de) 1973-07-15
CA941793A (en) 1974-02-12
FR2085928A1 (xx) 1971-12-31
FR2085928B1 (xx) 1975-10-10
ZA712276B (en) 1972-01-26
YU88371A (en) 1979-02-28

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