EP0018466A1 - Grue à flèche - Google Patents

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Publication number
EP0018466A1
EP0018466A1 EP80100478A EP80100478A EP0018466A1 EP 0018466 A1 EP0018466 A1 EP 0018466A1 EP 80100478 A EP80100478 A EP 80100478A EP 80100478 A EP80100478 A EP 80100478A EP 0018466 A1 EP0018466 A1 EP 0018466A1
Authority
EP
European Patent Office
Prior art keywords
jib
luffing
boom
guide
roof
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.)
Withdrawn
Application number
EP80100478A
Other languages
German (de)
English (en)
Inventor
Kurt Kibler
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.)
Prietzel Klaus
Original Assignee
Prietzel Klaus
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 Prietzel Klaus filed Critical Prietzel Klaus
Publication of EP0018466A1 publication Critical patent/EP0018466A1/fr
Withdrawn legal-status Critical Current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
    • B66C11/00—Trolleys or crabs, e.g. operating above runways
    • B66C11/08—Trolleys or crabs, e.g. operating above runways with turntables
    • B66C11/10—Trolleys or crabs, e.g. operating above runways with turntables equipped with jibs

Definitions

  • the invention relates to a jib crane for agricultural fodder halls, with a rotating trolley, which is guided longitudinally in the roof space on guide rails and on its rotatable part, which is rotatably mounted about a vertical axis relative to the chassis, carries a boom that can be adjusted transversely to this axis a gripper is suspended at the free end and which is subdivided by a horizontal articulated joint into a rear, adjustable guide arm and a front luffing jib, which are mutually adjustable by means of a motorized luffing mechanism.
  • a jib crane In DE-Auslegeschrift 1 943 875 a jib crane is described, the telescopically extendable boom with luffing drive is articulated on the underside of the rotatable part of a rotating trolley.
  • a jib crane In DE-Laid-Open Specification 2,356,904, a jib crane is described, the jib "of which can be retracted by more than half of its length at the maximum extended position and is provided with a roller arrangement by means of which it can be attached to the Supports connected circular arc-shaped support rail whose radius of curvature corresponds approximately to the distance of the outer end of the boom from the center of rotation of the boom with the boom extension fully retracted and the boom is curved.
  • the extendable boom according to DE-AS 1 943 875 has the advantage that work and handling is made easier with the retracted short boom, especially in narrow barns with a lot of disturbing beams.
  • the risk of bumping into the roof beams is low when the boom is shortened, especially when traveling by crane and rotating.
  • a high stack height is achieved through the luffing mechanism.
  • the boom may raised between two runways and the hay to the Kranbahnen.eingelagert be.
  • the curved boom according to DE-OS 2 356 904 can be designed so that it always remains at a certain small distance from the roof when extending, without the roof can be touched.
  • the disadvantage here is that the boom cannot perform a rocking movement.
  • the stack height is therefore very limited. It lies about the hook height below the curve that describes the end of the boom carrying the hook. This disadvantage is very significant, since with increased yields and often enlarged forage area the absorption capacity of old barns is almost sufficient anyway.
  • the horizontal crane boom which can also have a telescopically variable length, is attached at one end to the rotatable part of a longitudinally movable rotary trolley and at the other end one adjustable by means of a hydraulic cylinder Boom with gripper carries.
  • a cantilever with an invariable length there can either only be a very limited radius, or the turning circle becomes so large that it cannot be inserted between the side posts, so that the available storage space cannot be fully utilized.
  • the overall arrangement becomes too complicated and prone to failure.
  • the invention is based on the type of jib crane mentioned at the outset and pursues the task of developing this crane in such a way that it can be produced with little technical effort and is designed to be functionally reliable in such a way that better utilization of the existing storage space is made possible and yet ensured is that the boom cannot hit the roof.
  • the extended boom has a constant overall length which is smaller than the clear width of the roof space which is kept free in the direction of travel, and the guide arm as a whole is guided in a longitudinally displaceable manner on the rotatable crane part and has a curvature adapted to the shape of the roof space in such a way that the free end of the luffing jib carrying the gripper is guided in a curve running along the roof skin.
  • the jib crane according to the invention is particularly characterized in that complicated adjustment mechanisms such as telescopic guides and. Like. Avoided and only a few simple, robust and reliable gear groups are joined together. By combining only one Sliding guide on an arched path and the luffing movement of the luffing jib, however, a much better utilization of the available storage space is achieved. This applies to storage areas at the end of the crane runway or to storage areas at the end of the hall. For example, it is easily possible to raise the gripper in the middle of the hall to just below the ridge.
  • each boom must be adapted to the existing roof space. As a rule, one comes with even shorter boom lengths, so that the free longitudinal travel is also possible when the boom is extended by a predetermined distance.
  • the area of the permissible exit can be felt by switches and made visible by signals or by automatic safety devices that ensure that not from striving or the like. limited working area is extended before the boom is retracted.
  • the overhang can be increased by approx. 60 - 80%, depending on the selected guide length, in order to be able to reach parts of the storage area that are far outside.
  • the free end of the luffing jib since the free end of the luffing jib is guided in a curve running along the roof skin, it can also be loaded in these side parts of the hall up to just under the roof without the risk of piercing the roof skin with the luffing jib.
  • the luffing mechanism can have a drafting mechanism, such as a hydraulic cylinder or a threaded spindle, attached to the underside of the boom. It is preferably connected to an extension of the guide arm that projects beyond the articulated joint. In this way, the space required below is limited and there are no disruptive projections on the top of the boom.
  • a drafting mechanism such as a hydraulic cylinder or a threaded spindle
  • both boom parts can be supported against one another by an end stop in the extended position or a lower end position, in particular formed by an end position of the luffing gear.
  • this lowered position i.e. when the luffing jib is lowered, the crane operator can work relatively unconcerned, he only has to make sure that he does not come into contact with the beams during crane travel or when swiveling, provided there is no automatic safety device.
  • the luffing jib should have the same curvature and in particular the same cross-section as the Füh have booms.
  • the crane operator is only required to pay more attention if the luffing jib is raised from its extended or lowered position to operate a higher filling height. It can therefore be expedient to control the tipping mechanism in a manner determined by the shape of the roof, depending on the rotational position of the boom. This can be such that one allows only certain luffing angles for certain turning and extending positions of the boom and then switches off automatically. Limit switch controls are often sufficient, but it can also be appropriate to use switch-dependent controls to determine separate switching values for setting options.
  • the feed hall shown in the drawing is composed of a post 2, rafters 3 and roof skin 4 and crossbar 5 on a stable ceiling 1 or another suitable foundation.
  • Struts 6 support the rafters, limit individual lateral storage compartments and could hinder the longitudinal movement of the jib crane used.
  • crane tracks 8 are suspended, on which a rotating trolley 10 is suspended by means of suspension trolleys 9, the rotatable part 11 of which can rotate freely about the vertical axis of rotation 12 and pairs of rollers 13 for a guide arm 14 of the generally with at its front and rear ends 7 designated boom carries.
  • a rocker arm 16 of approximately the same length is mounted by means of an articulated joint 15, which, for example, can have the same box-shaped cross section as the guide boom 14. Both brackets are curved to the same extent, the luffing jib 16 forming a smooth continuation of the guide jib 14 in the stretched position shown.
  • the luffing jib can be straight or curved differently than the guide jib. It can also have a different cross section, since there is normally no need to pass the boom beyond the articulated joint 15 through the rollers 13 of the rotary trolley.
  • a luffing mechanism 17 designed as a hydraulic cylinder is used to adjust the luffing jib and is attached as a drafting system on the underside of the jib between two lugs 18, 19.
  • the extension 19 of the guide arm 14 protrudes somewhat beyond the articulated joint 15.
  • the luffing mechanism In the extended position according to FIGS. 1 and 2, the luffing mechanism is in an end position, thus mechanically securing the extended position or another end position. It goes without saying that this end position securing can also be ensured outside the luffing mechanism, for example in such a way that the attachment 14 acts on the luffing jib 16 from below.
  • a gripper 20 of known construction is suspended so that it can be raised and lowered by means of cable hangers 21 and drum or roller bearings 22.
  • the pump for the hydraulic luffing gear 17, the motors for trolley travel, slewing gear, extension of the boom 7, lifting and actuating the gripper 20, as well as the power supply lines and controls, are omitted for the sake of simplicity.
  • Fig. 1 shows an extension position of the boom with about half of the maximum radius, in which the free end of the luffing jib 16 is just within the free passage space laterally delimited by the struts 6. At the rear end of the guide arm 14, on the other hand, there remains an even greater distance up to the opposite strut 6. The jib could thus be retracted by the angle a without the risk of collision with a strut 6, provided the luffing jib 16 assumes the stretched position shown. Stops or control rails and pushbuttons between the guide arm 14 and the rotatable part 11 of the rotary trolley can indicate that the crane can move freely on its guide rails 1 and can be pivoted about its axis 12. Only when the boom is moved out of the range of the angle a in one direction or the other, is it necessary to be more careful when driving longitudinally. However, this also only if the boom is positioned transversely to the guide rails 1.
  • the rotational position of the rotatable cat part 11 can therefore also be tapped in order to ensure the display or protection provided here. In any case, it can be reliably ensured that when the luffing jib is moved into a space divided laterally by the struts 6, the crane is not moved out of this space in the longitudinal direction.
  • the setting of the luffing mechanism 17 or the luffing jib 16 can be scanned to ensure that the roof skin is not damaged. Since the free end of the luffing jib is tight when the jib is extended, but always at a distance from the roof skin long driving, the roof skin could only be damaged by lifting the luffing jib. If the actuation of signal lights is not sufficient, a control lock can also be installed here, which only allows the luffing jib to be raised when the jib is in a limited rotational position relative to the guide rails 8.
  • the entire interior of the hall below the crossbeams 5 can be operated with the luffing jib lowered in its end position. At best in the corners between the crossbeams 5 and the rafters 3 little additional space could be gained. However, if the boom is rotated in the longitudinal direction of the crane carriageway, even with the boom extended according to FIG. 3, considerable lifting height can be obtained for storing additional quantities.
  • the luffing jib 16 can intervene in the triangular first space between the crossbeams 5 even from below if the rotary trolley is held at a greater distance from this field. The lifting height becomes all the greater when the rotary trolley according to FIG. 4 can be brought up close to the respective crossbar 5. It can also be clearly seen that the curvature of the luffing jib 16 downward increases the usual lifting height compared to an extended jib, since the gripper does not come into contact with the jib until later.
  • a kink-resistant spindle drive can also be used, and the boom can have a different cross section and a different section modulus according to its local stress. Furthermore, at least the guide boom can have a curvature that changes along its length, so that quite different roof curves can be followed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP80100478A 1979-04-26 1980-01-31 Grue à flèche Withdrawn EP0018466A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792916821 DE2916821A1 (de) 1979-04-26 1979-04-26 Auslegerkran fuer landwirtschaftliche futterbergehallen
DE2916821 1979-04-26

Publications (1)

Publication Number Publication Date
EP0018466A1 true EP0018466A1 (fr) 1980-11-12

Family

ID=6069264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100478A Withdrawn EP0018466A1 (fr) 1979-04-26 1980-01-31 Grue à flèche

Country Status (2)

Country Link
EP (1) EP0018466A1 (fr)
DE (1) DE2916821A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3527928A1 (de) * 1985-08-03 1987-02-12 Rudolf Arpogaus Greiferkrananlage zum einbau in landwirtschaftlichen gebaeuden
EP0388702A1 (fr) * 1989-03-21 1990-09-26 ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA Pont roulant avec une flèche articulée orientable
WO2000069770A1 (fr) * 1999-05-18 2000-11-23 Udo Winter Fleche telescopique destinee a un vehicule ou a un engin de levage
EP1288156A1 (fr) * 2001-09-03 2003-03-05 Steindl Krantechnik Ges.m.b.H Grue tournante suspendue

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE207716C (fr) *
DD81582A (fr) *
FR951413A (fr) * 1942-01-31 1949-10-25 Armin Tenner Fa Pont roulant
DE1886661U (de) * 1960-03-03 1964-01-30 Demag Zug Gmbh Hydraulisch betriebener, seilloser, fahrbarer kran oder bagger.
DE2137722B1 (de) * 1971-07-28 1973-04-26 Josef Brunnhuber Maschinenfabrik, 8900 Augsburg Auslegerkran
DE1943875B2 (fr) * 1969-08-29 1973-10-11 Hans 8113 Kochel Demleitner
DE7229576U (de) * 1973-10-18 Krueger G Maschinenfabrik Fahrwerk-Greifer, insbesondere für landwirtschaftliche Zwecke
DE2356904B2 (de) * 1973-11-14 1977-03-31 Kirchmayer, Hermann, 8000 München Auslegerdrehlaufkatze
DE2558724A1 (de) * 1975-12-24 1977-07-07 Franz Dipl Ing Kustermann Bergesystem fuer landwirtschaftliche betriebe, insbesondere fuer die einlagerung und die entnahme von rauhfutter und silage
DE2313516B2 (de) * 1973-03-19 1977-10-13 Schuster, Siegfried, 8922 Pelting Kran
DE2633545B1 (de) * 1976-07-26 1977-11-24 Hermann Kirchmayer Auslegerdrehlaufkatze

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE207716C (fr) *
DD81582A (fr) *
DE7229576U (de) * 1973-10-18 Krueger G Maschinenfabrik Fahrwerk-Greifer, insbesondere für landwirtschaftliche Zwecke
FR951413A (fr) * 1942-01-31 1949-10-25 Armin Tenner Fa Pont roulant
DE1886661U (de) * 1960-03-03 1964-01-30 Demag Zug Gmbh Hydraulisch betriebener, seilloser, fahrbarer kran oder bagger.
DE1943875B2 (fr) * 1969-08-29 1973-10-11 Hans 8113 Kochel Demleitner
DE2137722B1 (de) * 1971-07-28 1973-04-26 Josef Brunnhuber Maschinenfabrik, 8900 Augsburg Auslegerkran
DE2313516B2 (de) * 1973-03-19 1977-10-13 Schuster, Siegfried, 8922 Pelting Kran
DE2356904B2 (de) * 1973-11-14 1977-03-31 Kirchmayer, Hermann, 8000 München Auslegerdrehlaufkatze
DE2558724A1 (de) * 1975-12-24 1977-07-07 Franz Dipl Ing Kustermann Bergesystem fuer landwirtschaftliche betriebe, insbesondere fuer die einlagerung und die entnahme von rauhfutter und silage
DE2633545B1 (de) * 1976-07-26 1977-11-24 Hermann Kirchmayer Auslegerdrehlaufkatze

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3527928A1 (de) * 1985-08-03 1987-02-12 Rudolf Arpogaus Greiferkrananlage zum einbau in landwirtschaftlichen gebaeuden
EP0388702A1 (fr) * 1989-03-21 1990-09-26 ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA Pont roulant avec une flèche articulée orientable
US5186343A (en) * 1989-03-21 1993-02-16 Iti/Clm Impianti Tecnici Industriali Spa Bridge crane with articulated rotary boom
WO2000069770A1 (fr) * 1999-05-18 2000-11-23 Udo Winter Fleche telescopique destinee a un vehicule ou a un engin de levage
US6881021B1 (en) 1999-05-18 2005-04-19 Udo Winter Telescopic jib for a motor vehicle or a crane
EP1288156A1 (fr) * 2001-09-03 2003-03-05 Steindl Krantechnik Ges.m.b.H Grue tournante suspendue

Also Published As

Publication number Publication date
DE2916821A1 (de) 1980-11-06

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Inventor name: KIBLER, KURT