EP0126302B1 - Zentriereinrichtung zum Aufsetzen des Kranoberteils - Google Patents

Zentriereinrichtung zum Aufsetzen des Kranoberteils Download PDF

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Publication number
EP0126302B1
EP0126302B1 EP19840104404 EP84104404A EP0126302B1 EP 0126302 B1 EP0126302 B1 EP 0126302B1 EP 19840104404 EP19840104404 EP 19840104404 EP 84104404 A EP84104404 A EP 84104404A EP 0126302 B1 EP0126302 B1 EP 0126302B1
Authority
EP
European Patent Office
Prior art keywords
carrier
pin
centering
sockets
plate
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
EP19840104404
Other languages
English (en)
French (fr)
Other versions
EP0126302A2 (de
EP0126302A3 (en
Inventor
Leroy L. Wittman
David W. Olsen
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.)
FMC Corp
Original Assignee
FMC Corp
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 filed Critical FMC Corp
Publication of EP0126302A2 publication Critical patent/EP0126302A2/de
Publication of EP0126302A3 publication Critical patent/EP0126302A3/en
Application granted granted Critical
Publication of EP0126302B1 publication Critical patent/EP0126302B1/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
    • 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
    • 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

Definitions

  • This invention relates to a crane having an upper supported on retractable legs above a carrier comprising a jack on each of said legs for lowering said upper to said carrier and floats attached to each leg for permitting lateral shifting of said leg as said jacks lower said upper to said carrier.
  • the object of the present invention is to provide centering means for redecking the upper on the carrier while the upper is lowered to the carrier.
  • this is achieved by conical shaped vertical centering pins attached to the upper and complementary sockets mounted on the carrier. When said centering pins are fully seated in the sockets, said upper can be lowered to said carrier.
  • Latch means including a retaining pin are provided for selectively holding said centering pins in an extended position and a retracted position.
  • a crane indicated generally at 10, includes an upper 12 which is rotatably mounted on a lower or carrier 14 by means of a turntable bearing 16.
  • the turntable bearing is releasably secured to a ring 18 secured to the upper with a locking ring expandable to interlock the bearing 16 and ring 18, and retractable to release the bearing from the ring to permit separation of the upper 12.
  • a preferred means for such releaseable attachment of ring and bearing is more fully shown and described in U.S. patent 3,923,407 issued Dec. 2, 1975 to L. B. Jensen, and R. E. Thune.
  • the ring must be aligned with the turntable bearing and the swing pinion must also be positioned for engagement with a ring gear on the outer race of the turntable bearing to permit swinging of the upper.
  • the upper 12 carries a plurality of legs 20, preferably one at each of its corners, with a double-acting hydraulic jack 22 affixed to, or otherwise incorporated into the free end of each leg 20. With the ring 18 and bearing 16 released, extension of these jacks will elevate the upper 12 above the carrier 14, as shown in Figure 1. Retraction of these jacks will lower the upper 12 onto the carrier 14.
  • a pontoon or float 24 is pinned to the rod end of each jack 22 to distribute the load over a relatively large area and thereby achieve acceptable ground pressures. Alignment or centering of the aforementioned components is provided by four pins 26 carried on the upper 12, two at each end thereof, and corresponding sockets 28 affixed to the carrier 14. Since all of the pins 26 and their cooperating elements are similar, a description of one will be sufficient for a complete understanding.
  • the centering pin 26 is slidably mounted in a tubular member or sleeve affixed to the upper 12.
  • the pin 26 is itself preferably a tubular member for weight reduction and has a hardened frustoconical cap 32 affixed to its lower end.
  • a handle 34 is secured to the upper end of the pin 26. This handle is preferably rigid with a transverse dimension greater than the interior diameter of the sleeve 30 to preclude the pin 26 from dropping through the sleeve.
  • a crossbore 36 is provided in the pin 26 and a similar crossbore 38 is provided in the sleeve 30.
  • a retaining pin 40 is capable of insertion through these crossbores.
  • the centering pin 26 is retained in an operative or stowed position by manually raising the pin 26, by means of handle 34, and inserting pin 40 through the crossbore 38 so that the cap 32 rests on the pin 40, as shown in Figure 3.
  • the pin 26 is retained in an operative or centering position by lowering it until the crossbores 36 and 38 are aligned and the retaining pin 40 inserted, as shown in Figure 4.
  • the angle of the surface 44 and the cap 32 is chosen so that the tangent of this angle is approximately equal to the coefficient of friction between the materials thereof when lubricated. Such an angle assures effective centering without imposing large side loads on the structures.
  • the upper and carrier are operatively assembled with the upper facing the rear of the carrier and aligned therewith in a fore and aft direction.
  • the centering pin 26 is permitted to drop into contact with the unattached socket 42.
  • the position of the socket is then adjusted so that the centerlines of the pin and socket are aligned and the socket 42 is then secured to the carrier 14.
  • the centering sequence for redecking is illustrated in Figures 4-6.
  • the centering pin 26 With the upper elevated from the carrier, as shown in Figure 1, the centering pin 26 is retained by pin 40 in its lowered or operative position.
  • the carrier 14 is maneuvered sufficiently to position the pin 26 so that at least a portion of the angled surface of the cap 32 is directly above the complementary surface 44.
  • the centerline 46 of the pin 26 will most likely be offset from the centerline 48 of the socket 42, as indicated at 50 in Figure 4.
  • the jacks 22 are then slowly contracted, lowering the upper 12 and causing the pin 26 to contact the socket 42, as shown in Figure 5. A further contraction of these jacks will cause the pin 26 to be urged by the socket 42 toward the center thereof.
  • the upper 12 will, therefore, be displaced or moved in a horizontal direction, as indicated by the arrow 52 in Figure 6, relative to the stationary carrier 14.
  • the pin and socket will now be aligned and will result, because there are four of these pins and sockets, in the upper 12 being aligned, within acceptable tolerances, to permit rejoining of the upper and carrier.
  • the jacks 22 are then extended just enough to permit removal of retaining pin 40 from the bores 36 and 38.
  • the jacks 22 are then retracted fully to redeck the upper on the carrier.
  • the centering pin 26 is then manually raised by the handle 34 to permit the retaining pin 40 to be inserted through bore 38 below the cap 32 to retain the pin 26 in its stowed position. Swinging movement of the upper on the carrier is then possible.
  • the floats 24, as shown in Figure 7, are provided with a base 54 to which a bearing block 56 is secured.
  • An upper bearing plate 58 rests upon and is movable relative to the block 56. Both of these bearing members have smooth mating surfaces and are lubricated to provide as small a friction force to movement under load as possible.
  • a fabricated socket 60 is attached to the plate 58 and facilitates attachment to the rod end of the jack 22 by means of a removable pin 62.
  • a retaining flange is attached to the periphery of the plate 58 and limits lateral movement of the plate 58 relative to the block 56.
  • the float 24 is initially positioned as shown in Figure 7 with the block 56 centered on the plate 58. This relationship is established by aligning the edges of a plate 66, on which the block 56 is centered and' attached, forming a part of the fabricated base 54 with a flange 64 attached to plate 58. During the centering sequence illustrated in Figure 6, the leg 20 and jack 22 will also be displaced or moved laterally. The bearing plate 58 and its attached members will be able to move laterally as shown in Figure 8, to accommodate the movement of the upper 12. As shown in Figure 9, the movement of the plate 58 is universal in a horizontal plane and within the limits determined by contact between the flange 64 and the block 56. Handles 70 and 72 secured to the plate 58 and the base 54 respectively facilitate transport and positioning thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Claims (4)

1. Kran mit einem Oberteil (12), welches auf zurückziehbaren Stegen (20) oberhalb eines Trägers (14) getragen ist, mit einer Hebevorrichtung (22) an jedem der Stege (20), um das Oberteile (12) zu dem Träger (14) hin abzusenken, und mit Fußtellern (24), die an jedem Steg (20) befestigt sind, um ein seitliches Verschieben eines jeden Steges (20) zu gestatten, wenn die Hebevorrichtungen (22) das Oberteil (12) zu dem Träger (14) absenken, dadurch gekennzeichnet, daß eine Vielzahl von vertikalen Zentrierstiften (26) vorgesehen ist, die gleitbar von dem Oberteil (12) getragen sind, daß jeder Zentrierstift (26) ein konisches Ende (32) aufweist, daß eine gleiche Anzahl von Fassungen (42) vorgesehen ist, die eine Oberfläche (44) aufweisen, die komplementär zu dem konischen Ende (32) ausgebildet ist, daß die Fassungen (42) an dem Träger (14) so positioniert sind, daß das Oberteil (12) zu dem Träger (14) hin abgesenkt werden kann, wenn die konischen Enden (32) vollständig in den entsprechenden Fassungen (42) sitzen, daß eine Verriegelungseinrichtung (36, 38) ein schließlich eines Haltestifts (40) vorgesehen ist, um die Zentrierstifte (26) wahlweise in einer ausgefahrenen Position, in welcher das Oberteil (12) und der Träger (14) vertikal im Abstand voneinander angeordnet sind, wenn die konischen Enden (32) in Kontakt mit den Fassungen (42) sind, und in einer Zurückgezogenen Position zu halten, in welcher die konischen Enden (32) vertikal von den Fassungen (42) beabstandet sind, wenn das Oberteil (12) vollständig auf dem Träger (14) getragen ist.
2. Kran nach Anspruch 1, dadurch gekennzeichnet, daß jeder Fußteller (24) einen Boden (54) zwecks Kontaktes mit dem Untergrund faßt, daß ein Lagerblock (56) an dem Boden (54) befestigt ist, daß eine Lagerplatte (58) an dem Block (56) ruht und gegen ihn verschiebbar ist und daß eine Einrichtung (60, 62) vorgesehen ist, um die Hebevorrichtungen (22) an der Platte (58) zu befestigen.
3. Kran nach Anspruch 2, dadurch gekennzeichnet, daß ein Begrenzungseinrichtungen (56, 64) vorgesehen ist, um die Seitliche Bewegung der Platte (58) in Bezug auf den Block (56) zu beschränken.
4. Kran nach Anspruch 3, dadurch gekennzeichnet, daß die Begrenzungseinrichtung (56, 64) einen Flansch (64) umfaßt, der an der Platte (58) befestigt ist und letztere umgibt und mit dem Block (56) in Eingriff bringbar ist.
EP19840104404 1983-04-22 1984-04-18 Zentriereinrichtung zum Aufsetzen des Kranoberteils Expired EP0126302B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48764083A 1983-04-22 1983-04-22
US487640 1983-04-22

Publications (3)

Publication Number Publication Date
EP0126302A2 EP0126302A2 (de) 1984-11-28
EP0126302A3 EP0126302A3 (en) 1986-02-05
EP0126302B1 true EP0126302B1 (de) 1988-01-13

Family

ID=23936556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840104404 Expired EP0126302B1 (de) 1983-04-22 1984-04-18 Zentriereinrichtung zum Aufsetzen des Kranoberteils

Country Status (3)

Country Link
EP (1) EP0126302B1 (de)
JP (1) JPS6012494A (de)
DE (1) DE3468663D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462557B (sv) * 1989-04-28 1990-07-16 Raa Koort Arbetsmaskin med stabiliserbar foerarstol
JP6250382B2 (ja) * 2013-12-25 2017-12-20 日本車輌製造株式会社 ブーム脱着構造

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460697A (en) * 1967-02-07 1969-08-12 Dobson Ltd W E & F Transportable load carrying appliances
US3632074A (en) * 1967-10-09 1972-01-04 Western Electric Co Releasable mounting and method of placing an oriented array of devices on the mounting
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
US3726418A (en) * 1971-07-01 1973-04-10 Clark Equipment Co System and method for removable installation of swing circle for large crane
US3923407A (en) * 1974-02-06 1975-12-02 Fmc Corp Mechanism for connecting and disconnecting crane sections
JPS54122555A (en) * 1978-03-14 1979-09-22 Kato Seisakushiyo Kk Upper turning body incorporating device to carrier
US4273244A (en) * 1979-01-29 1981-06-16 Fmc Corporation Crane upperstructure self-transferring system

Also Published As

Publication number Publication date
EP0126302A2 (de) 1984-11-28
JPS6012494A (ja) 1985-01-22
DE3468663D1 (en) 1988-02-18
JPH027876B2 (de) 1990-02-21
EP0126302A3 (en) 1986-02-05

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