EP0733583A1 - Selbstaufstellender Kran mit seitlich klappbarem Ausleger - Google Patents

Selbstaufstellender Kran mit seitlich klappbarem Ausleger Download PDF

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Publication number
EP0733583A1
EP0733583A1 EP96420060A EP96420060A EP0733583A1 EP 0733583 A1 EP0733583 A1 EP 0733583A1 EP 96420060 A EP96420060 A EP 96420060A EP 96420060 A EP96420060 A EP 96420060A EP 0733583 A1 EP0733583 A1 EP 0733583A1
Authority
EP
European Patent Office
Prior art keywords
mast
boom
jib
articulated
crane
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
EP96420060A
Other languages
English (en)
French (fr)
Other versions
EP0733583B1 (de
Inventor
François Aquino
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.)
Manitowoc Crane Group France SAS
Original Assignee
Potain SA
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Filing date
Publication date
Application filed by Potain SA filed Critical Potain SA
Publication of EP0733583A1 publication Critical patent/EP0733583A1/de
Application granted granted Critical
Publication of EP0733583B1 publication Critical patent/EP0733583B1/de
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
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • 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
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/348—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes the erection being operated by jacks

Definitions

  • the present invention relates to an automated assembly crane, in particular a foldable mast crane, provided with a jib articulated at the top of the mast and produced in three successive elements articulated to each other, namely, a jib foot, an intermediate element arrow and an arrowhead.
  • the invention relates to a crane whose folding of the boom takes place laterally along the mast and more precisely to a device which allows the folding of the boom tip simultaneously with the folding of the crane, for its transport .
  • Document EP-A-0473518 discloses an embodiment of such a crane equipped with a jib, composed only of two elements articulated to each other at their lower members.
  • the boom of this crane is articulated in a centered position, at the top of the mast, around an articulation axis inclined at an acute angle (A) relative to a direction perpendicular to the vertical median plane defined by the mast and the boom in the deployed working position, while the articulation axis of the two boom elements is inclined at an angle (B), substantially equal to half (A / 2) of the acute angle of inclination (A) from the axis of articulation of the boom to the top of the mast, with respect to a direction perpendicular to the vertical median plane of the boom.
  • This embodiment of the boom limits the length of the boom which, once folded, must meet the requirements of the various transport jigs, in particular as regards the length of the package.
  • the present invention provides a substantial improvement to the previous embodiment by providing a device making it possible to extend the folding of the boom laterally along the mast to a boom produced in three elements articulated to each other, so as to allow the transport of the crane folded under a smaller footprint, even with a longer boom.
  • a crane comprises a mast, in particular a foldable mast, at the top of which is articulated, in a centered position, a boom whose articulation axis is inclined at an acute angle (A) relative to a direction perpendicular to the vertical median plane defined by the mast and the boom in the deployed working position, produced in three successive elements articulated to each other, designated respectively as jib foot, intermediate jib element and arrowhead, the jib foot and the intermediate boom element being articulated at their lower members around an articulation axis inclined at an angle (B), substantially equal to half (A / 2) of the acute angle of inclination (A) of the articulation axis of the boom at the top of the mast, with respect to a direction perpendicular to the vertical median plane of the boom, so that in the folded position, the intermediate boom element and the po boom boom are positioned laterally with respect to the mast, the crane further comprising a motorized device for unfolding / folding the mast and boom
  • the complementary device for unfolding / folding the arrow tip, relative to the intermediate arrow element consists of a connecting rod articulated to the part front of the boom foot and a punch articulated to the rear part of the intermediate arrow element, the connecting rod and the punch being articulated together at the top of the punch, of a lever articulated to the rear part of the arrowhead and capable of bearing on the structure of said arrowhead, and of a tie connecting the top of the connecting rod / punch assembly to the free end of the lever, to form a deformable quadrilateral.
  • the tie rod comprises several successive elements, a first simple element articulated at the top of the rod / punch assembly and on which a light is provided longitudinally, a second element comprising a simple part connected to the first element by a axis passing through the light and a double part providing space for the passage of a tie supporting the intermediate element, and a third element consisting of two binoculars connecting by hinges the ends of the double part of the second tie element and the free ends two identical connecting rods forming the lever articulated at the rear of the arrowhead.
  • the lower part of the foldable mast is fitted laterally, on the side where the boom is folded / unfolded, with one or more rollers capable of making contact with the underside of the arrowhead to finish the complete folding of the crane.
  • An automated assembly crane is thus produced which, in the folded state therefore in the transport position, occupies an optimal size with the jib foot being presented obliquely and applied to the mast, while the intermediate jib element and the arrowheads are positioned one above the other laterally with respect to the mast.
  • This arrangement does not entail any oversizing because, in the working position, the unfolded boom and the mast are arranged in the same vertical plane as in a conventional crane.
  • the application of the invention to a crane with jib made of three elements hinged to each other makes it possible to increase the performance of the crane, in particular in terms of reach.
  • the crane shown schematically in the drawing comprises a fixed or rolling base frame 1, retractable, supporting by means of an orientation device 2 a rotating frame 3 which carries at the rear a counterweight 4 and at the front of which is articulated, around a horizontal axis 5, a foldable mast 6 composed of a lower mast or base mast 7 and an upper mast 8 connected one to the other by articulation on their rear face about a horizontal axis 9; the base mast 7 and the upper mast 8 have, in the example considered, an octagonal section.
  • This crane is provided with a foldable / collapsible distributing jib 10, produced in three successive elements designated respectively as jib foot 11, intermediate jib element 12 and jib tip 13.
  • the foldable mast 6 is motorized for its unfolding / folding by means of a jack 14, 15 whose body 14 is connected to the base mast 7 by articulation around a horizontal axis 16 disposed on the rear face of this base mast 7 and the rod 15 of which is connected by articulation around a horizontal axis 17 at the top of a set of two double connecting rods 18, 19 articulated respectively around a horizontal axis 20 disposed at the upper part of the base mast 7 and a horizontal axis 21 disposed at the lower part of the upper mast 8.
  • the upper mast 8 is connected to the rotating frame 3, by means of two straightening shrouds 22, arranged symmetrically on either side of the mast 6 and articulated respectively around a horizontal axis 23 at the base of the upper mast 8 and around a horizontal axis 24 on a support 25 fixed to the rear of the rotating chassis 3.
  • the jib foot 11 is articulated at the top of the mast 6 about a horizontal axis 26 in the working position of the crane (FIG. 5), the axis 26 being disposed on an easel 27 projecting under the jib foot 11.
  • the boom foot 11 can be folded forward against the upper mast 8, in the folded transport position shown in Figures 1 to 3.
  • the bridge 27 carries at its upper rear part a rear arrow punch 28 articulated around a horizontal axis 29 and foldable forwards on the jib foot 11.
  • the intermediate jib element 12 is articulated at the jib foot 11 about an axis 37, horizontal in the working position of the crane, disposed at the junction of the respective lower members 38, 39 of the jib elements 12, 11.
  • the intermediate arrow element 12 carries at its rear part a punch 40 whose base is articulated around the aforementioned axis 37, and which is foldable forward on said intermediate arrow element 12.
  • a flexible tie rod of constant length 41 produced in the form of a cable for example, connects the top 42 of the punch 40 to a joint 43 arranged on the upper frame 44 of the front part of the intermediate jib element 12.
  • the respective vertices 34, 42 of the punches 28, 40 are connected to each other by a flexible tie rod 45, produced in the form of a cable for example, while the vertex 34 of the rear arrow punch 28 is connected to the rotating chassis 3, by a flexible rear retaining rod 46 also achievable in cable, an intermediate point 47 of which is fixed to one end of a connecting rod 48 having its other end hinged at 49 on the rear face of the base mast 7.
  • the arrowhead 13 is articulated to the intermediate arrow element 12 about an axis 50, the direction of which is perpendicular to the vertical median plane of the arrow 10, disposed at the junction of the respective upper members 51, 44 of the elements of arrow 13, 12.
  • the posterior ends of the lower members 52 of the arrowhead 13 come into contact at 53 with the front ends of the lower members 38 of the intermediate arrow member 12 to form an assembly aligned with the arrowhead 11 and constituting the horizontal distributing arrow 10 of the crane.
  • a cable 54 for unfolding / folding the boom 10 connects a point 55 of the lower rear part of the intermediate boom element 12 to a tensioning device 56 fixed to the rear lower part base mast 7; the cable 54, of constant length, passes successively over a first pulley 57 disposed inside the front part of the jib foot 11, on a second pulley 58 disposed inside the rear part of the jib foot 11, then it forms, as shown in particular in FIG.
  • an additional device is provided for unfolding / folding the arrowhead 13 relative to the intermediate arrow element 12, shown in detail in FIG. 12.
  • This device consists of: a connecting rod 64 articulated at the front part of the jib foot 11 around a horizontal axis 65 disposed on a support 66 fixed to the end of the upper member 36 and a punch 67 articulated to the rear part of the intermediate jib element 12 around a horizontal axis 68 disposed on a support 69 fixed to the bracing of the lower members 38, the connecting rod 64 and the punch 67 being articulated together at the top of said punch 67 about a horizontal axis 70; a lever 71, formed of two identical connecting rods 72 mounted in parallel, articulated at the rear of the arrowhead 13 around horizontal axes 73 arranged on supports 74 fixed to the bracing of the lower members 52, capable of bearing on a symmetrical double support 75 fixed to the end of the upper member 51 in the vicinity of the hinge pin 50 of the arrowhead 13 on the
  • the tie rod 76 comprises several successive rigid elements, a first simple element 79 of relatively short length, the first end of which is articulated around the horizontal axis 70 constituting the top of the rod 64 / punch 67 assembly and the other end of which forms a longitudinal light 80, a second element 81 comprising a single part 82 connected to the first element 79 by a horizontal axis 83 passing perpendicularly through the light 80 and a double part 84 providing a space 85 for the passage of the tie rod 41 supporting the intermediate element of arrow 12 and a third element 86 consisting of two identical binoculars 87 mounted in parallel, connecting around horizontal articulation axes 88 the free ends of the second tie member 81 to the free ends 78 of the two identical connecting rods 72 forming the lever 71.
  • the articulation axis 26 of the jib foot 11 at the top of the mast 6 is inclined at an angle A relative to the direction of the usual articulation axis 89, perpendicular in the vertical vertical plane P of the crane in deployed working position, the angle A being defined in a plane perpendicular to the longitudinal axis of the mast 6.
  • the angle B has a value substantially equal to A / 2, and it is the same direction as the angle A in the horizontal plane of the arrow 10 when the latter is aligned.
  • the angles of inclination A and B are relatively small; advantageously, the value of the angle A (expressed in radians and comparable to its tangent) is substantially equal to the ratio between the width of the upper mast 8 and the length of this upper mast 8.
  • the crane In the transport position, the crane is shown as shown in Figures 1 to 3.
  • the mast 6 is folded back on itself and lowered substantially horizontally.
  • the jib foot 11 is folded over the mast 6 and, seen from above ( Figure 3), it is oblique, that is to say with its longitudinal axis making an angle A with the longitudinal axis of the upper mast 8.
  • the intermediate jib element 12 is folded up under the jib foot 11 and it is applied laterally against the upper mast 8, while the jib tip 13 is folded back under the intermediate jib element 12 along its axis longitudinal, the respective upper members 51, 44 of said jib elements 13, 12 appearing face to face.
  • the mast 6 In the working position, shown in FIG. 5, the mast 6 is straightened and deployed in a vertical position, while the boom 10 is aligned in a substantially horizontal position to ensure its function of distributing boom with a carriage.
  • the assembly formed by the mast 6 and the arrow 10 is arranged symmetrically by relative to the vertical median plane P (see also Figure 4), as in a conventional crane.
  • the complementary device for unfolding / folding the arrow tip 13 relative to the intermediate arrow element 12 is folded down on said element 12 by shortening the length of the tie rod 76 by displacement of the horizontal axis 83 of the tie member 81 in the longitudinal lumen 80 of the tie member 79.
  • the shortening of the actuator 14, 15 is controlled by retracting its rod 15 into its body 14, in order to pivot the base mast 7 forwards around its articulation axis 5 on the rotating frame 3, while the upper mast 8 pivots rearwards, about its articulation axis 9 on the base mast 7, under the action of the dressing shrouds 22 which hold it.
  • the jib folding cable 54 When the intermediate jib element 12 and the jib tip 13 arrive in the position shown in FIG. 8, the dead weight of said elements 12, 13 ceases to be driving, the jib folding cable 54, the initial tension of which has been adjusted by the device 56, is kept in tension thanks to the predetermined characteristics of its path from point 55 to the device 56 via the intermediate pulleys 57, 58, 60, 61 and thanks to its elasticity. The boom folding cable 54 then ensures continuity of movement until complete folding of the boom foot 11 and of the intermediate boom element 12.
  • the jib tip 13 is supported under the lower members 52 on a set of rollers 91 fixed on one side of the lower part 7 of the foldable mast 6 and while the jib tip 13 is folded under the intermediate arrow element 12, the tie 76, connecting the punch 67 to the lever 71, is erased by shortening thanks to the displacement of the axis 83 in the slot 80 formed on the tie member 79 .
  • the crane At the end of the folding operation, the crane is in the transport position described above, with its boom 10 folded laterally relative to the mast 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP96420060A 1995-03-21 1996-02-26 Selbstaufstellender Kran mit seitlich klappbarem Ausleger Expired - Lifetime EP0733583B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9503529 1995-03-21
FR9503529A FR2731999B1 (fr) 1995-03-21 1995-03-21 Grue a montage automatise avec fleche repliable lateralement

Publications (2)

Publication Number Publication Date
EP0733583A1 true EP0733583A1 (de) 1996-09-25
EP0733583B1 EP0733583B1 (de) 1999-04-28

Family

ID=9477426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96420060A Expired - Lifetime EP0733583B1 (de) 1995-03-21 1996-02-26 Selbstaufstellender Kran mit seitlich klappbarem Ausleger

Country Status (7)

Country Link
EP (1) EP0733583B1 (de)
CN (1) CN1147476A (de)
AT (1) ATE179391T1 (de)
DE (1) DE69602223T2 (de)
ES (1) ES2132860T3 (de)
FR (1) FR2731999B1 (de)
RU (1) RU2169695C2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2761970A1 (fr) * 1997-04-11 1998-10-16 Potain Sa Dispositif de relevage de mat pour grue a tour telescopique
EP0888997A1 (de) * 1997-07-02 1999-01-07 Potain Turm, zusammenklappbar in drei Elemente, mit Vorrichtung zum Zusammenklappen/Aufklappen für einen Turmkran
US6991120B2 (en) * 2002-04-12 2006-01-31 Potain Device for raising and unfolding the mast and for raising the jib of a crane

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102320526B (zh) * 2011-09-14 2013-02-13 哈尔滨东建机械制造有限公司 一种自装卸可折叠塔式起重机
CN110697436B (zh) * 2019-10-16 2020-12-01 长沙理工大学 一种水平旋转的折叠臂输送机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403704A (en) * 1981-04-08 1983-09-13 Hitachi, Ltd. Vertically pivotable boom bending device for crane
DE3303524A1 (de) * 1983-02-03 1984-08-09 Wilhelm 5020 Frechen König Turmdrehkran
FR2550176A1 (fr) * 1983-08-03 1985-02-08 Potain Sa Grue a fleche depliable en plusieurs elements articules
DE3633582A1 (de) * 1985-10-02 1987-04-16 Cattaneo Luigi Spa Gelenkkran mit sich automatisch aufrichtendem turm und verlaengerndem ausleger
EP0360702A1 (de) * 1988-09-20 1990-03-28 Potain Zusammenlegbarer Kran mit einem Ausleger, bestehend aus zwei oder drei gelenkig miteinander verbundenen Elementen
EP0473518A1 (de) * 1990-07-31 1992-03-04 Potain Selbstaufstellender Kran mit seitlich klappbarem Ausleger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403704A (en) * 1981-04-08 1983-09-13 Hitachi, Ltd. Vertically pivotable boom bending device for crane
DE3303524A1 (de) * 1983-02-03 1984-08-09 Wilhelm 5020 Frechen König Turmdrehkran
FR2550176A1 (fr) * 1983-08-03 1985-02-08 Potain Sa Grue a fleche depliable en plusieurs elements articules
DE3633582A1 (de) * 1985-10-02 1987-04-16 Cattaneo Luigi Spa Gelenkkran mit sich automatisch aufrichtendem turm und verlaengerndem ausleger
EP0360702A1 (de) * 1988-09-20 1990-03-28 Potain Zusammenlegbarer Kran mit einem Ausleger, bestehend aus zwei oder drei gelenkig miteinander verbundenen Elementen
EP0473518A1 (de) * 1990-07-31 1992-03-04 Potain Selbstaufstellender Kran mit seitlich klappbarem Ausleger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2761970A1 (fr) * 1997-04-11 1998-10-16 Potain Sa Dispositif de relevage de mat pour grue a tour telescopique
EP0873964A1 (de) * 1997-04-11 1998-10-28 Potain Technik zum Aufrichten des Mastes für einen Teleskopkran
EP0888997A1 (de) * 1997-07-02 1999-01-07 Potain Turm, zusammenklappbar in drei Elemente, mit Vorrichtung zum Zusammenklappen/Aufklappen für einen Turmkran
FR2765564A1 (fr) * 1997-07-02 1999-01-08 Potain Sa Mature pliable en trois elements avec dispositif de pliage/depliage pour grue a tour
US6991120B2 (en) * 2002-04-12 2006-01-31 Potain Device for raising and unfolding the mast and for raising the jib of a crane

Also Published As

Publication number Publication date
CN1147476A (zh) 1997-04-16
FR2731999B1 (fr) 1997-05-30
EP0733583B1 (de) 1999-04-28
FR2731999A1 (fr) 1996-09-27
DE69602223D1 (de) 1999-06-02
RU2169695C2 (ru) 2001-06-27
ATE179391T1 (de) 1999-05-15
DE69602223T2 (de) 1999-11-11
ES2132860T3 (es) 1999-08-16

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