EP0126303A2 - Vorrichtung zum Demontieren des Kranoberteils - Google Patents

Vorrichtung zum Demontieren des Kranoberteils Download PDF

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Publication number
EP0126303A2
EP0126303A2 EP84104405A EP84104405A EP0126303A2 EP 0126303 A2 EP0126303 A2 EP 0126303A2 EP 84104405 A EP84104405 A EP 84104405A EP 84104405 A EP84104405 A EP 84104405A EP 0126303 A2 EP0126303 A2 EP 0126303A2
Authority
EP
European Patent Office
Prior art keywords
leg
invention according
legs
bell crank
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
EP84104405A
Other languages
English (en)
French (fr)
Other versions
EP0126303A3 (en
EP0126303B1 (de
Inventor
David W. Olsen
Leroy L. Wittman
Marvin E. Evenson
Gary W. Kappel
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.)
Link Belt Cranes LP LLLP
Original Assignee
FMC Corp
Link Belt Construction Equipment Co LP LLLP
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 FMC Corp, Link Belt Construction Equipment Co LP LLLP filed Critical FMC Corp
Publication of EP0126303A2 publication Critical patent/EP0126303A2/de
Publication of EP0126303A3 publication Critical patent/EP0126303A3/en
Application granted granted Critical
Publication of EP0126303B1 publication Critical patent/EP0126303B1/de
Expired 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
    • B66C23/62—Constructional features or details
    • 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
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated

Definitions

  • This invention relates to an undecking arrangement for cranes, and more particularly, to such an arrangement which utilizes short stroke jacks and is capable of compact stowage.
  • a crane indicated generally at 10, includes an upper 12 rotatably mounted on a lower works or carrier 14 by means of a turntable bearing 16.
  • the turntable bearing 16 is releaseably secured to a ring 18 attached to the upper 12.
  • a preferred means for releaseably securing the ring and turntable bearing is disclosed in U. S. patent 3,923,407 issued Dec. 2, 1975 to L. B. Jensen and R. E. Thune.
  • a pair of front legs 20 are mounted on the front of the upper 12 and a pair of rear legs 22 are mounted on the rear thereof.
  • Each of the pair of legs 20 and 22 is capable of spanning the transverse width of the carrier 14 and provide a structural means of supporting the upper 12 from the ground. Since each of the front pair of legs are similiar, as are each of the rear pair, a description of only one leg of each pair is necessary for a complete understanding of the invention.
  • the front leg 20 includes a tubular portion 24 having a double-acting hydraulic ram or jack 26 affixed to the interior thereof.
  • the rod 28 of jack 26 protrudes from one end of portion 24, has a cross bore 30 for attachment of a float or pontoon 32, as shown in Figures 1 and 2, for engagement with the ground, and is extendable to elevate the upper 12 as can be seen in Figure 2.
  • a transverse beam end 34 is affixed to the other end of portion 24 with a gusset 36 welded there between.
  • the beam end 34 is pivotally mounted to a plate 38 secured to the free end of a round tubular beam 40 by means of hinge pin 42.
  • the hinge pin 42 is oriented substantially vertical so that the leg 20 may swing in a horizontal plane between a stowed position, as shown by solid lines in Figure 3, and a deployed or outward position, as shown by phantom lines.
  • the beam end 34 is provided with a bore 44 that is alignable with a bore 46 provided in the plate 38. Insertion of a pin through the bores 44 and 46 rigidly secures the beam end 34 to the beam 40.
  • the arrow 48 illustrates the movement of bore 44 as the leg 20 is manually pivoted between the solid line stowed position and the phantom line deployed position. In the stowed position the leg 20 is underneath the cab 50 of the upper, as shown in Figure 1, with the tubular portion 24 extending forward, thereof, relative to the upper 12.
  • the leg 20 In the deployed position, the leg 20 is positioned outboard and beside the cab 50 with the portion 24 extending rearward. While the leg 20 is heavy, the manual movement between stowed and deployed positions may be readily accomplished because only the frictional forces around hinge pin 42 need be overcome.
  • the leg 20 must be rotated through 90 degrees to a vertical orientation.
  • Such movement is provided by mounting the round beam 40 in a round box member 51 rigidly secured to the frame of the upper 12 through plate members 52 and 54.
  • An actuating tube 56 is secured to, and extends between, the beam 40 and the comparable beam for the other of the pair of legs 20.
  • a crank arm 58 is secured to the center of the tube 56 and is pinned at 60 to the clevis on the rod end of a double-acting hydraulic ram 62.
  • the head end of ram 62 is pinned at 64 to a fixed bracket 66 rigidly secured to the upper 12.
  • the leg 20 With the ram 62 extended, as shown in Figure 4, the leg 20 will be in its deployed position; the center line of the leg 20 being indicated at 70.
  • the ram 62 When the ram 62 is contracted, as shown in phantom lines therein, the leg 20 will be rotated to its vertical position; the centerline of the leg 20 now )eing indicated at 72.
  • a collar 74 engages the inner end of the round beam 40 and is arranged to function as a stop or motion limiter.
  • the collar 74, round beam 40 and the actuating tube 56, are pinned into a unitary structure by a pin 76 inserted through aligned holes extending there through.
  • a lug 78 formed on the collar 74 is provided with a pair of radially extending stop surfaces or faces 80 and 82.
  • a wedge block 84 having a surface engageable with, and complementary to, the face 80 is secured to a structural member 86 of the upper 12.
  • the wedge block 84 is pushed against the face 80 and welded to the member 86 when the legs 20 are vertically oriented with the upper 12 in a level position.
  • the engagement of the face 80 with the wedge 84 thereafter positions the legs 20 correctly to support the weight of the upper.
  • shims may be attached to the wedge block to compensate for tolerance accumulations between the two front legs.
  • a pawl 88 is pivotally mounted by means of pin 90 to a plate member 92 affixed between plate member 54 and its corresponding member on the other side of the upper's longitudinal center line.
  • the pawl 88 is biased by tension spring 94 toward engagement with the stop surface or face 82.
  • Shims 96 may be secured to the free end of pawl 88, in order to reduce back lash and to lock the cross tube members so that the legs 20 are substantially vertical.
  • the pawl 88 is manually lifted by means of handle 98 so that it is free of the lug 78 and the ram 62 is extended, causing the legs 20 to rotate to their deployed position.
  • the collar 74 and its lug 78 will have rotated until the face 82 engages the angle 100 secured between the plate 54 and its corresponding member on the other side of the upper center line.
  • the pin that had been inserted through bores 44 and 46 is removed and the leg 20 pivoted on pin 42 from its deployed position to its stowed position.
  • the center of gravity of the leg 20 tends to rotate the beam 40 in a counter clockwise direction, as viewed in Figure 4.
  • the rear legs 22 for supporting the upper 12 are pivotable between an upward and inboard stowed position, shown by phantom lines in Figure 1, and an outward and downward operable position, shown by solid lines in Figures 1 and 2.
  • the one leg 22, shown in Figure 6, illustrates the leg in its stowed position in solid lines and in its operable position in phantom lines with the lower portion eliminated.
  • the rear leg 22 has a tubular member 102 with a double-acting jack 104 affixed to its interior.
  • the rod of the jack has a cross bore 106 for attachment of a float or pontoon 32 when in its operable position.
  • the tubular member 102 is attached to a beam end 108 with a gusset 110 secured there between for strength.
  • the beam end 108 is preferably hollow and of rectangular cross section, and is pivotally connected by means of pin 112 to a rigid beam 114 affixed to the upper 12.
  • a bellcrank 116 is rotatably mounted on the pin 112.
  • a double acting hydraulic ram 118 has its rod end pivotally connected at 117 to the bell crank 116.and its head end pivotally connected at 119 to the beam end 108.
  • a similar ram 120 has its rod end pivotally connected at 121 to the bell crank 116 on the opposite side of the pin 112 and its head end pivotally connected at 122 to the beam 114.
  • the beam end 108 is substantially parallel with and overlies the beam 114.
  • the beam end 108 is rotated counter clockwise, as viewed in Figure 6, through approximately 180 degrees so that the beam end 108 and the beam 114 are aligned with the tubular member 102 substantially vertical.
  • the beam end 108 and beam 114 are then joined into a structural unit by insertion of a pin through then aligned bores 124 and 126 formed in the beam end 108 and the beam 114 respectively.
  • the present invention provides a structural arrangement for the undecking of a crane upper which requires relatively short stroke jacks and the inherent disadvantages of long stroke jacks are thereby obviated.
  • the legs may be folded compactly and with little physical effort against the crane upper into their stowed positions and do not inhibit or interfere with the normal operation of the crane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP19840104405 1983-04-22 1984-04-18 Vorrichtung zum Demontieren des Kranoberteils Expired EP0126303B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48762983A 1983-04-22 1983-04-22
US487629 1983-04-22

Publications (3)

Publication Number Publication Date
EP0126303A2 true EP0126303A2 (de) 1984-11-28
EP0126303A3 EP0126303A3 (en) 1986-02-05
EP0126303B1 EP0126303B1 (de) 1990-01-10

Family

ID=23936516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840104405 Expired EP0126303B1 (de) 1983-04-22 1984-04-18 Vorrichtung zum Demontieren des Kranoberteils

Country Status (3)

Country Link
EP (1) EP0126303B1 (de)
JP (1) JPS6012493A (de)
DE (1) DE3480996D1 (de)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925930A (en) * 1958-05-14 1960-02-23 R A Goodling Demountable cargo box for vehicles
US3396854A (en) * 1967-06-19 1968-08-13 Oris L. Crisp Outrigger stabilizer for cranes
DE1531139A1 (de) * 1967-09-05 1969-10-30 Krupp Gmbh Abstuetzeinrichtung fuer einen Autokran od.dgl.
US3624784A (en) * 1970-06-30 1971-11-30 Harnischfeger Corp Decking and undecking apparatus for a truck crane
DE2119030A1 (de) * 1971-04-20 1972-11-09 Fried. Krupp Gmbh, 4300 Essen Eisenbahnkran
US3836012A (en) * 1973-07-09 1974-09-17 Bucyrus Erie Co Removable outrigger assembly with rotatable jack
US3923407A (en) * 1974-02-06 1975-12-02 Fmc Corp Mechanism for connecting and disconnecting crane sections
DE2310525B2 (de) * 1973-03-02 1977-09-01 H Weyhausen KG, Maschinenfabrik, 2870 Delmenhorst Abstuetzung fuer einen lkw-kran
FR2443356A1 (fr) * 1978-12-07 1980-07-04 Vignolles Jean Dispositif de securite pour stabilisateurs de remorques
US4273244A (en) * 1979-01-29 1981-06-16 Fmc Corporation Crane upperstructure self-transferring system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925930A (en) * 1958-05-14 1960-02-23 R A Goodling Demountable cargo box for vehicles
US3396854A (en) * 1967-06-19 1968-08-13 Oris L. Crisp Outrigger stabilizer for cranes
DE1531139A1 (de) * 1967-09-05 1969-10-30 Krupp Gmbh Abstuetzeinrichtung fuer einen Autokran od.dgl.
US3624784A (en) * 1970-06-30 1971-11-30 Harnischfeger Corp Decking and undecking apparatus for a truck crane
DE2119030A1 (de) * 1971-04-20 1972-11-09 Fried. Krupp Gmbh, 4300 Essen Eisenbahnkran
DE2310525B2 (de) * 1973-03-02 1977-09-01 H Weyhausen KG, Maschinenfabrik, 2870 Delmenhorst Abstuetzung fuer einen lkw-kran
US3836012A (en) * 1973-07-09 1974-09-17 Bucyrus Erie Co Removable outrigger assembly with rotatable jack
US3923407A (en) * 1974-02-06 1975-12-02 Fmc Corp Mechanism for connecting and disconnecting crane sections
FR2443356A1 (fr) * 1978-12-07 1980-07-04 Vignolles Jean Dispositif de securite pour stabilisateurs de remorques
US4273244A (en) * 1979-01-29 1981-06-16 Fmc Corporation Crane upperstructure self-transferring system

Also Published As

Publication number Publication date
EP0126303A3 (en) 1986-02-05
JPS6012493A (ja) 1985-01-22
DE3480996D1 (de) 1990-02-15
EP0126303B1 (de) 1990-01-10
JPH0210080B2 (de) 1990-03-06

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