EP3656724A1 - Machine de travail pourvue d'au moins une jambe pivotante - Google Patents

Machine de travail pourvue d'au moins une jambe pivotante Download PDF

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Publication number
EP3656724A1
EP3656724A1 EP19206583.7A EP19206583A EP3656724A1 EP 3656724 A1 EP3656724 A1 EP 3656724A1 EP 19206583 A EP19206583 A EP 19206583A EP 3656724 A1 EP3656724 A1 EP 3656724A1
Authority
EP
European Patent Office
Prior art keywords
swivel
working machine
cylinders
leg
cylinder
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Withdrawn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
EP19206583.7A
Other languages
German (de)
English (en)
Inventor
Johannes Fetzer
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.)
Liebherr Mischtecknik GmbH
Original Assignee
Liebherr Betonpumpen GmbH
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 Liebherr Betonpumpen GmbH filed Critical Liebherr Betonpumpen GmbH
Publication of EP3656724A1 publication Critical patent/EP3656724A1/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Withdrawn legal-status Critical Current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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0445—Devices for both conveying and distributing with distribution hose with booms

Definitions

  • the invention relates to a work machine with at least one swivel leg and at least one substructure.
  • Truck-mounted concrete pumps known from the prior art comprise swivel legs or telescopic swivel legs either in the front, rear or at both ends. Support legs of this type can also be used in other work machines, such as excavators, loaders and cranes.
  • the swivel legs are part of the supporting structure of the corresponding machine. Legs of this type can be swung out to the side and, if necessary, telescoped. When the working machine is in operation, the legs are in a pivoted-in state behind the driver's cab and essentially parallel to the longitudinal axis of the working machine. In order to accomplish the swiveling, the swiveling operation of the swivel leg is as economical as possible.
  • Such legs are usually swung out and swung in with a drive cylinder such as a hydraulic cylinder or a so-called swivel cylinder, the leg being articulated with an immovable part of the Substructure such as a mast bracket or a base frame is connected.
  • a drive cylinder such as a hydraulic cylinder or a so-called swivel cylinder
  • the swivel axis of the leg, the leg itself, the length of the swivel cylinder and the immovable part of the base form a horizontal triangle that can be attached to the leg at almost any height.
  • Hydraulic cylinders offer an excellent degree of movement despite the simplest construction and are therefore very economical to use.
  • a disadvantage of the known designs is that no vertical forces can be absorbed by the construction or by the swivel cylinder, and thus no support can be made by the swivel cylinder against the vertical loads that dominate the swivel leg. This makes it necessary to make the rest of the structure of the working machine correspondingly strong and therefore heavy and costly.
  • a working machine in particular a truck-mounted concrete pump, is provided with at least one swivel leg and at least one substructure.
  • the Swivel leg is pivotally mounted to the substructure in a manner known per se.
  • the swivel leg can be swiveled relative to the rest of the structure of the working machine by means of at least two swivel cylinders angled to one another.
  • the swivel cylinders can provide the power required for swiveling the swivel leg.
  • the idea according to the invention thus consists of using two cylinders, spread apart in the vertical direction, to drive the swivel leg laterally on the substructure or on the mast bracket instead of just one swivel cylinder.
  • the two cylinders can be attached, for example, in such a way that the cylinder ends on the swivel leg are very close to one another, while they are arranged on the substructure or mast bracket as far apart as possible, or vice versa.
  • This design transforms the previously described truss, consisting of the swivel leg, swivel cylinder and substructure or mast bracket, into a spatial truss with two swivel cylinders, which is now able to absorb vertical forces via the cylinders.
  • the remaining structure of the working machine can include the substructure and / or other components of the working machine.
  • the term swing cylinder is To be interpreted broadly in the present case and can include any hydraulic or electrical actuators, for example, which can be designed in particular as linear actuators.
  • the swivel leg can also be a telescopic swivel leg, which can comprise at least two components which can be displaced relative to one another and can both be swiveled relative to the substructure of the working machine and can also be telescopic in relation to itself.
  • the swivel leg can be swiveled relative to the rest of the structure of the working machine by means of exactly two swivel cylinders.
  • the pivot cylinders can be arranged in a vertical plane. Depending on the swivel position of the swivel leg, this vertical plane defined by the swivel cylinders is also swiveled relative to the base of the working machine.
  • this vertical plane defined by the swivel cylinders is also swiveled relative to the base of the working machine.
  • an alternative embodiment is also conceivable, in which the plane defined by the swivel cylinders is angled to the vertical plane, that is to say at an angle greater than 0 °.
  • the swivel cylinders are arranged at an angle of 45 ° -90 ° to one another when the swivel leg is in a swiveled-in state.
  • the angle between the swivel cylinders can differ or change.
  • the swiveled-in state of the swivel leg can be a state in which the swivel leg is arranged essentially parallel to the longitudinal axis of the working machine and is in particular in contact with the working machine. Since the angle between the swivel cylinders is variable, the coupling sections, by means of which the swivel cylinders are coupled to the rest of the structure of the working machine, are designed to enable the swivel leg to be swiveled while changing the angle spanned by the swivel cylinders.
  • the swivel cylinders are coupled to an upper plate and a lower plate of the substructure.
  • the top plate and the bottom plate of the substructure can be any desired, in particular plate-shaped, components, between which further parts of the substructure are arranged.
  • the coupling of the swivel cylinders can comprise at least one swivel section, via which the respective swivel cylinder can be swiveled relative to the substructure and / or to the swivel leg.
  • the swivel section can also be welded and / or screwed to the substructure.
  • the swivel cylinders are coupled to a region of the swivel leg that is central in the vertical direction.
  • an inverted embodiment is also conceivable, in which the swivel cylinders are coupled to a region of the substructure that is central in the vertical direction and on the other side are coupled to an upper and lower region of the swivel cylinder.
  • a coupling section in particular a common one, for coupling the two pivot cylinders can be provided in the central region. As described above, this coupling section can enable different movements of the swivel cylinders and can be welded to the swivel leg or to the substructure.
  • the swivel cylinders are the same.
  • the swivel cylinders can be made smaller than the individual swivel cylinders known from the prior art.
  • the cylinder side of the swivel cylinder can face the base of the working machine.
  • Power connections of swivel cylinders can usually be located in the area of the cylinder side, so that the arrangement of the swivel cylinders described is suitable for a simple connection of the swivel cylinders to an energy source, which can usually be located in the area of the base of the machine.
  • the cylinders are driven electrically or hydraulically.
  • Figure 1 shows a partial view of a work machine in which an embodiment of the swivel leg linkage according to the invention is shown in the upper area and a linkage of the swivel leg 1 known from the prior art is shown in the lower area.
  • the work machine shown can be, for example, a truck-mounted concrete pump.
  • This can comprise two or more swivel legs 1.
  • the swivel legs 1 are hinged to the substructure 15.
  • at least one of the swivel legs 1 is mutually connected by means of at least two angled pivot cylinder 2 pivotable about a pivot axis 14 relative to the rest of the structure of the working machine.
  • the swivel leg 1 can be a telescopic swivel leg which comprises a swivel leg section 11 and a telescopic section 12.
  • the basic structure of the machine designed as a truck-mounted concrete pump should be based on the page display of Figure 3 are explained.
  • the reference number 101 denotes the mast bracket of the truck-mounted concrete pump, on which the foldable placing boom 102 is arranged.
  • the placing boom 102 consists of the mast arms 103, which can be pivoted relative to one another and thus serve to unfold the placing mast 102.
  • the vehicle shown comprises a pivotable support cylinder 105 on the rear of the vehicle, each of which can be pivoted about a vertical pivot axis relative to the chassis.
  • a pivoting and horizontally telescopic support cylinder 109 for each side of the vehicle intended.
  • the cylinders 109 can be retracted or extended transversely to the longitudinal axis of the vehicle and additionally pivoted about a vertical axis.
  • Both the support cylinders 105 and the support cylinders 109 comprise support legs which can be extended and retracted in the vertical direction in order to increase or reduce the contact pressure on the standing surface.
  • the support cylinders 105 can be locked in position by means of a lock 106.
  • the lock 108 is used for the front support cylinders 109.
  • the control block 107 With the help of the control block 107, the support cylinders 105, 109 on the left side of the vehicle are operated; the control cylinders 5, 9 mounted on the right side of the vehicle can be controlled via a separate control block.
  • the concrete pump is controlled via a second control block, and the placing boom 102 is controlled via a third control block.
  • a control panel for pump control and a control cabinet at the rear of the vehicle There is also a control panel for pump control and a control cabinet at the rear of the vehicle.
  • a water tank including filler neck and drain tap is located in the middle of the vehicle between the front and rear axles.
  • a valve for the gear changeover can also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP19206583.7A 2018-11-26 2019-10-31 Machine de travail pourvue d'au moins une jambe pivotante Withdrawn EP3656724A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018129830.7A DE102018129830A1 (de) 2018-11-26 2018-11-26 Arbeitsmaschine mit wenigstens einem Schwenkbein

Publications (1)

Publication Number Publication Date
EP3656724A1 true EP3656724A1 (fr) 2020-05-27

Family

ID=68426119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19206583.7A Withdrawn EP3656724A1 (fr) 2018-11-26 2019-10-31 Machine de travail pourvue d'au moins une jambe pivotante

Country Status (2)

Country Link
EP (1) EP3656724A1 (fr)
DE (1) DE102018129830A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01202559A (ja) * 1988-01-09 1989-08-15 Nakaoka Yoshimune クレーン車等作業用車輌のアウトリガー装置
US4913402A (en) * 1989-02-13 1990-04-03 Mcjunkin Jr Howard P Automotive floor jack
GB2353271A (en) * 1999-06-30 2001-02-21 Caterpillar Inc Multi-position stabiliser leg
CN102493654B (zh) * 2011-12-21 2014-05-21 三一重工股份有限公司 一种工程机械

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US31642A (en) 1861-03-05 Improvement in sewing-machines
USRE31642E (en) * 1979-01-29 1984-08-07 Caterpillar Tractor Co. Angle and tilt implement assembly
DE8101439U1 (de) * 1981-01-22 1981-05-14 Krupp Mak Maschinenbau Gmbh, 2300 Kiel Stuetzvorrichtung fuer panzerfahrzeuge
DE102006052276B4 (de) * 2006-11-03 2010-07-29 Rheinmetall Landsysteme Gmbh Fahrzeug mit einer bugseitig angeordneten Stütz- und Räumanlage
EP2639358B1 (fr) * 2012-03-16 2018-06-20 Pearson Engineering Limited Assemblage pour le montage d'outil sur un véhicule
CN109050490A (zh) * 2018-09-30 2018-12-21 三汽车制造有限公司 支腿装置及特种车辆

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01202559A (ja) * 1988-01-09 1989-08-15 Nakaoka Yoshimune クレーン車等作業用車輌のアウトリガー装置
US4913402A (en) * 1989-02-13 1990-04-03 Mcjunkin Jr Howard P Automotive floor jack
GB2353271A (en) * 1999-06-30 2001-02-21 Caterpillar Inc Multi-position stabiliser leg
CN102493654B (zh) * 2011-12-21 2014-05-21 三一重工股份有限公司 一种工程机械

Also Published As

Publication number Publication date
DE102018129830A1 (de) 2020-05-28

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