EP1299598A2 - Support booms for mobile working machines and mobile concrete pump with said support booms - Google Patents

Support booms for mobile working machines and mobile concrete pump with said support booms

Info

Publication number
EP1299598A2
EP1299598A2 EP01945197A EP01945197A EP1299598A2 EP 1299598 A2 EP1299598 A2 EP 1299598A2 EP 01945197 A EP01945197 A EP 01945197A EP 01945197 A EP01945197 A EP 01945197A EP 1299598 A2 EP1299598 A2 EP 1299598A2
Authority
EP
European Patent Office
Prior art keywords
boom
telescopic
support
box
chassis
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
EP01945197A
Other languages
German (de)
French (fr)
Other versions
EP1299598B1 (en
Inventor
Dietmar FÜGEL
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister AG
Putzmeister Werk Maschinenfabrik 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 Putzmeister AG, Putzmeister Werk Maschinenfabrik GmbH filed Critical Putzmeister AG
Publication of EP1299598A2 publication Critical patent/EP1299598A2/en
Application granted granted Critical
Publication of EP1299598B1 publication Critical patent/EP1299598B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to a support boom for mobile machines, in particular for truck-mounted concrete pumps, with a boom box that can be pivoted about a vertical pivot axis on a chassis, with a telescopic part that can be retracted into the boom box, and with a foot part that is arranged at the front end of the telescopic part, optionally vertically displaceable or adjustable.
  • the invention further relates to a truck-mounted concrete pump support boom of this type.
  • telescopic support arms which can be swiveled out laterally on a chassis for supporting the concrete pump in the working position (DE-C-4203820), the vertical pivot axis of which is arranged at the rear end of the boom box.
  • the front outrigger extends there in the transport position from the pivot bearing essentially parallel to the direction of travel to the front, while in the working position they protrude obliquely forward over the chassis.
  • the telescopic part slidably arranged in the swiveling boom box is formed there in one piece.
  • the front outrigger arms are pivotally mounted at the rear end of the outrigger box on swivel bearings fixed to the chassis about a vertical axis, the swivel bearings being arranged at a distance from the slewing gear of the concrete placing boom in the vicinity of the bearing points for the rear outrigger legs.
  • the relatively large distance of the bearing points from the slewing gear results in an unfavorable flow of force from the concrete placing boom to the outriggers, which leads to an unstable outreach behavior. Proceeding from this, the object of the invention is to develop a support boom for mobile machines, in particular for truck-mounted concrete pumps, which requires little space both in the transport position and when extending at the construction site and which nevertheless ensures stable support.
  • the solution according to the invention is based on the idea that by moving the vertical pivot axis from the free end of the jib box into the jib box, better use of space during the swiveling out process and better support stability can be achieved.
  • a double-acting hydraulic cylinder extends through the boom box and the telescopic part, which is attached at its two ends to fastening points in the region of the opposite ends of the boom box and the telescopic part, and that the vertical pivot axis formed by a divided bearing point arranged at an axial distance from the rear fastening point in the direction of the foot part on the outrigger box and positioned so that it intersects the displacement axis of the hydraulic cylinder transversely or obliquely.
  • the single-section bearing is formed by two diametrically opposite bearing eyes on the outrigger box, which are intended to receive a two-part bearing pin.
  • a preferred embodiment of the invention provides that the distance of the vertical pivot axis from the rear end of the jib box is at least is at least one fifth and at most two thirds of the length of the boom box.
  • the distance of the pivot axis from the rear end of the boom box is advantageously between a four-part and a third of the length of the boom box. It is advantageous if the telescopic part that can be inserted into the extension box itself has at least two telescopic tubes that are guided into one another. Accordingly, the hydraulic cylinder for telescopic adjustment is designed as a multiple telescopic cylinder.
  • the boom box has a support roller near its exit-side front end, on which the telescopic part can be supported during the extension and retraction.
  • a further advantageous embodiment of the invention provides that the double-acting, preferably telescopic hydraulic cylinder can be acted upon in the two end positions from the rear end of the boom box with hydraulic fluid.
  • a connecting line is provided in the axial direction through the cylinder.
  • the foot part arranged at the free end of the telescopic part has a hydraulic raising cylinder which can be acted upon with hydraulic fluid via a hose line wound on a hose drum.
  • a preferred embodiment of the invention provides that the preferably telescopic hydraulic cylinder is attached with its free rod end to the boom box and with its free bottom end to the innermost telescopic tube of the telescopic part.
  • the truck-mounted concrete pump according to the invention comprises a chassis provided with at least one front axle and a rear axle, a rotating mechanism for a concrete placing boom arranged near the front axle, a pump arrangement mounted behind the rotating mechanism on the chassis and a supporting structure arranged on the chassis.
  • the support structure in turn has two front support arms pivotable about a vertical swivel axis between a transport position and at least one support position and two rear support arms.
  • the front outrigger arms are mounted with their outrigger boxes over split bearing bolts near the slewing gear at a bearing location that is fixed to the chassis, with the outrigger boxes protruding across the pivot point at both ends transversely to the pivot axis.
  • a preferred embodiment of the invention provides that the front outrigger arms are aligned with their boom boxes with respect to the longitudinal axis of the chassis in the transport position when the telescopic parts are retracted and in the working position with the telescopic parts extended, their foot parts protrude obliquely forward over the edge of the chassis.
  • the front support arms preferably point forward in the transport direction with their foot parts in the direction of travel. In this case, the space required for the exhibition process is particularly small.
  • the front outrigger arms can point rearward in the transport direction with their foot parts. This is particularly possible with a relatively small space requirement if the telescopic parts are designed as multiple telescopes and accordingly a relatively short boom box is provided.
  • the vertical swivel bearing of the outrigger can be arranged close to the slewing gear, so that there is a favorable flow of force from the concrete placing boom via the slewing gear into the outrigger boom.
  • rear outrigger arms as telescopic arms of the above type, and preferably in the
  • the jib boxes protruding at both ends across the pivot point transversely to the pivot axis.
  • the rear outrigger arms can also be aligned with their outrigger boxes parallel to the longitudinal axis of the chassis in the transport position when the telescopic parts are retracted and in the working position with the telescopic parts extended, their foot parts protrude obliquely backwards over the edge of the chassis.
  • the rear outriggers point in the transport position with their foot parts in the direction of travel to the rear. This orientation has the smallest space requirement when extending into the working position. In principle, however, it is also possible to align the rear outrigger with their foot parts in the direction of travel in the transport position.
  • An improvement in the support stability can be achieved if the displacement axis of the hydraulic cylinders with the associated pivot axis of the front and / or rear outrigger arms includes an oblique angle falling from the bearing point to the foot part.
  • FIG. 1a and b show a partially sectioned side view of a support boom for a truck-mounted concrete pump in the extended and retracted state
  • FIG. 2a shows a side view of a truck-mounted concrete pump with front support arms according to FIG. 1b in the transport position;
  • FIGS. 1a and b shows a top view of the truck-mounted concrete pump with support booms in different positions;
  • 3a and b a second embodiment of a truck-mounted concrete pump with front and rear support arms according to FIGS. 1a and b in representations corresponding to FIGS. 2a and b;
  • FIGS. 4a and b show a third embodiment of a truck-mounted concrete pump in representations corresponding to FIGS. 3a and b;
  • the truck-mounted concrete pumps shown in the drawing essentially consist of a multi-axle chassis 10 with two front axles 11 and three rear axles 12, with a driver's cab 13, a concrete placing boom 15 mounted on a slewing gear 14 near a front axle and rotatable about a vertical axis, with a spacing from Slewing gear 14 on the chassis 10 mounted pump assembly 16 and a support structure 18 for the chassis 10.
  • the support structure 18 has a support frame 19 fixed to the chassis and comprises two front outrigger arms 20 and two rear outrigger arms 22, 22 'which are drawn in in the transport position and parallel to the Longitudinal vehicle axis 24 are aligned and protrude obliquely forward or backward over the chassis 10 in the support position and are supported on the floor 30 with their foot parts 26, 28.
  • the front support arms 20 can be pivoted about their vertical pivot axes 32 and the rear pivot arms 22, 22 'about their vertical pivot axes 34 between the transport position and the support position under the action of one deployment cylinder 36 each.
  • the different the adjacent front and rear outrigger can be pivoted via a common drive.
  • the front outrigger arms 20 and in some of the exemplary embodiments also the rear outrigger arms 22 are designed as telescopic arms.
  • FIGS. 1a and b each comprise an extension box 38 which can be pivoted about the vertical pivot axis 32 or 34 relative to the chassis and a telescopic part 40 consisting of three telescopic tubes 40 ', 40 ", 40'".
  • a multi-telescopic, double-acting hydraulic cylinder 42 extends through the boom box 38 and the telescopic part 40 and has at its outermost rod-side end 44 at a fastening point 46 of the boom box and with its outermost bottom-side end 48 at a fastening point 50 of the telescopic tube
  • the fastening point 46 is located at the rear end of the boom box 38, while the fastening point 50 is located at the front end of the telescopic tube 40 '', so that the hydraulic cylinder 42 is both in the extended position according to FIG. and also in the retracted end position according to FIG. 1b is arranged entirely within the support arm 20.
  • a special feature of the telescopic support boom 20 is that its vertical pivot axis 32 is formed by a bearing section 54 which is arranged in one section and is positioned in such a way that it is positioned at an axial distance S from the rear fastening point 46 in the direction of the foot part 26 on the boom box 38 the displacement axis 52 of the hydraulic cylinder 42 intersects transversely.
  • the bearing section 54 which is divided into one section, is formed by two bearing eyes diametrically opposite one another on the extension box 38, which are intended for receiving a two-part bearing bolt 56. This ensures that the bearing pin 56 does not penetrate the boom box 38.
  • the distance is the pivot axis 32 from the attachment point 46 about a third of the length of the boom box 38.
  • support rollers 62 are arranged at the front end of the extension box 38, on which the outer telescopic tube 40 ′ of the telescopic parts 40 rolls.
  • the foot parts 26 are also extended hydraulically. The hydraulic supply required for this takes place via a hydraulic line 58 which can be unwound from a hose drum 60.
  • the telescopic support arms 20 are retracted in the reverse order, with the foot parts 26 first being lifted off the floor and possibly raised in a transport position shown in FIGS the hydraulic cylinder 42 is withdrawn into the boom box 38 and then the boom boxes 38 are pivoted about the vertical pivot axes 32 with the aid of the raising cylinder 36.
  • both the front and the rear support arms 20, 22 are designed as telescopic arms.
  • the rear outriggers point in the transport position in the case of FIGS. 4a and b to the rear and in the case of FIGS. 5a and b to the front.
  • the advantages and disadvantages of these two constructions are again to be seen in the fact that an arrangement of the rear outrigger arms that is somewhat cheaper in terms of space in the transport position has to be purchased by a somewhat larger pivoting range during the exhibiting process.
  • the foot parts 26, 28 can be completely retracted in the transport state, with the advantage of a greater ground clearance of the truck-mounted concrete pump.
  • the invention relates to a support boom for mobile machines, in particular for truck-mounted concrete pumps.
  • the support boom 20 has a boom box 38 which can be pivoted about a vertical pivot axis 32 on a chassis 10, a telescopic part 40 which can be displaced telescopically relative to the boom box, a double-acting hydraulic cylinder 42 which extends through the boom box 38 and the telescopic part 40, and one at the front end of the boom Telescopic part 40 arranged, vertically adjustable foot part 26.
  • the telescopic hydraulic cylinder 42 is with its two ends at fastening points 46, 50 in the region of the opposite ends of the Boom box 38 and the telescopic part 40 attached.
  • the vertical pivot axis 32 by an axial distance S from the rear attachment point 46 in the direction of the foot part on the outrigger box 38 arranged, single-section bearing point is formed and positioned so that it intersects the displacement axis 52 of the hydraulic cylinder 42 transversely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Jib Cranes (AREA)
  • Reciprocating Pumps (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

A support strut for mobile working machines, especially for mobile concrete pumps. The support strut (20) has a strut body (38) that can be pivoted around a vertical pivoting axis (32) on a chassis (10), a telescopic part (40), a dual-acting hydraulic cylinder (42) (38) and the telescopic part (40), in addition to a foot part (26) that. Both ends of the telescopic hydraulic cylinder (42) are fixed on fixing points (46, 50) in the area of the opposite ends of the body of the strut (39/8) and the telescopic part (40). The vertical pivoting axis (32) is defined by a divided bearing or journal location arranged at an axial distance (S) from the inboard fixing point (46) in the direction of the foot part on the body of the boom (38), said location being positioned in such a way that it transects the displacement axis (52) of the hydraulic cylinder (42) transversely.

Description

Stützausleger für fahrbare Arbeitsmaschinen und Autobetonpumpe mit solchen StützausiegernSupport boom for mobile machines and truck-mounted concrete pump with such support booms
Beschreibungdescription
Die Erfindung betrifft einen Stützausleger für fahrbare Arbeitsmaschinen, insbesondere für Autobetonpumpen, mit einem um eine vertikale Schwenkachse an einem Fahrgestell verschwenkbaren Auslegerkasten, mit einem in den Auslegerkasten einziehbaren Teleskopteil und mit einem am vorderen Ende des Teleskopteils angeordneten, gegebenenfalls vertikal verschieb- oder verstellbaren Fußteil. Weiter betrifft die Erfindung eine Autobetonpumpe Stützauslegern dieser Art.The invention relates to a support boom for mobile machines, in particular for truck-mounted concrete pumps, with a boom box that can be pivoted about a vertical pivot axis on a chassis, with a telescopic part that can be retracted into the boom box, and with a foot part that is arranged at the front end of the telescopic part, optionally vertically displaceable or adjustable. The invention further relates to a truck-mounted concrete pump support boom of this type.
Bei fahrbaren Betonpumpen ist es bekannt, seitlich an einem Fahrgestell ausschwenkbare und teleskopierbare Stützausleger zum Abstützen der Betonpumpe in Arbeitsstellung vorzusehen (DE-C-4203820), deren vertikale Schwenkachse am rückwärtigen Ende des Auslegerkastens angeordnet ist. Die vorderen Stützausleger erstrecken sich dort in der Transportstellung vom Schwenklager aus im wesentlichen parallel zur Fahrtrichtung nach vorne, während sie in der Arbeitsstellung schräg nach vorne über das Fahrgestell überstehen. Das in dem schwenkbaren Auslegerkasten verschiebbar angeordnete Teleskopteil ist dort einteilig ausgebildet. Die vorderen Stützausleger sind am rückwärtigen Ende des Auslegerkastens an fahrgestellfesten Schwenklagern um eine vertikale Achse schwenkbar gelagert, wobei die Schwenklager im Abstand vom Drehwerk des Betonverteilermasts in der Nähe der Lagerstellen für die rückwärtigen Stützbeine angeordnet sind. Durch die relativ große Entfernung der Lagerstellen vom Drehwerk ergibt sich ein ungünstiger Kraftfluß vom Betonverteilermast zu den Stützauslegern, der zu einem instabilen Abstützverhalten führt. Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, einen Stützausleger für fahrbare Arbeitsmaschinen, insbesondere für Autobetonpumpen zu entwickeln, der sowohl in der Transportstellung, als auch beim Ausfahren an der Baustelle einen geringen Platzbedarf aufweist und der dennoch eine stabile Abstützung gewährleistet.In the case of mobile concrete pumps, it is known to provide telescopic support arms which can be swiveled out laterally on a chassis for supporting the concrete pump in the working position (DE-C-4203820), the vertical pivot axis of which is arranged at the rear end of the boom box. The front outrigger extends there in the transport position from the pivot bearing essentially parallel to the direction of travel to the front, while in the working position they protrude obliquely forward over the chassis. The telescopic part slidably arranged in the swiveling boom box is formed there in one piece. The front outrigger arms are pivotally mounted at the rear end of the outrigger box on swivel bearings fixed to the chassis about a vertical axis, the swivel bearings being arranged at a distance from the slewing gear of the concrete placing boom in the vicinity of the bearing points for the rear outrigger legs. The relatively large distance of the bearing points from the slewing gear results in an unfavorable flow of force from the concrete placing boom to the outriggers, which leads to an unstable outreach behavior. Proceeding from this, the object of the invention is to develop a support boom for mobile machines, in particular for truck-mounted concrete pumps, which requires little space both in the transport position and when extending at the construction site and which nevertheless ensures stable support.
Zur Lösung dieser Aufgabe werden die in den Patentansprüchen 1 und 10 angegebenen Merkmalskombinationen vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhän- gigen Ansprüchen.To achieve this object, the combinations of features specified in claims 1 and 10 are proposed. Advantageous refinements and developments of the invention result from the dependent claims.
Der erfindungsgemäßen Lösung liegt der Gedanke zugrunde, daß durch eine Verlagerung der vertikalen Schwenkachse vom freien Ende des Auslegerkastens in den Auslegerkasten hinein eine bessere Raumnutzung beim Ausschwenkvorgang und eine bessere Abstützstabilität erzielt werden kann. Um dies zu erreichen, wird gemäß der Erfindung vorgeschlagen, daß sich durch den Auslegerkasten und das Teleskopteil ein doppeltwirkender Hydrozylinder erstreckt, der an seinen beiden Enden an Befestigungsstellen im Bereich der einander abgewandten Enden des Auslegerkastens und des Teleskopteils befestigt ist, und daß die vertikale Schwenkachse durch eine in axialem Abstand von der rückwärtigen Befestigungsstelle in Richtung Fußteil am Auslegerkasten angeordnete, geteilte Lagerstelle gebildet und so positioniert ist, daß sie die Verschiebeachse des Hydrozylinders quer oder schräg schneidet. Die einschnittig geteilte Lagerstelle ist durch zwei am Auslegerkasten einander diametral gegenüberliegende Lageraugen gebildet, die zur Aufnahme eines zweigeteilten Lagerbolzens bestimmt sind. Mit diesen Maßnahmen wird erreicht, daß der Lagerbolzen den Auslegerkasten nicht durchdringt.The solution according to the invention is based on the idea that by moving the vertical pivot axis from the free end of the jib box into the jib box, better use of space during the swiveling out process and better support stability can be achieved. To achieve this, it is proposed according to the invention that a double-acting hydraulic cylinder extends through the boom box and the telescopic part, which is attached at its two ends to fastening points in the region of the opposite ends of the boom box and the telescopic part, and that the vertical pivot axis formed by a divided bearing point arranged at an axial distance from the rear fastening point in the direction of the foot part on the outrigger box and positioned so that it intersects the displacement axis of the hydraulic cylinder transversely or obliquely. The single-section bearing is formed by two diametrically opposite bearing eyes on the outrigger box, which are intended to receive a two-part bearing pin. These measures ensure that the bearing pin does not penetrate the boom box.
Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß der Abstand der vertikalen Schwenkachse vom rückwärtigen Ende des Auslegerkastens min- destens ein Fünftel und höchstens zwei Drittel der Auslegerkastenlänge beträgt. Vorteilhafterweise beträgt der Abstand der Schwenkachse vom rückwärtigen Ende des Auslegerkastens zwischen einem Vierteil und einem Drittel der Länge des Auslegerkastens. Dabei ist es von Vorteil, wenn das in den Auslegerkasten einführbare Teleskopteil selbst mindestens zwei ineinander geführte Teleskoprohre aufweist. Entsprechend ist der Hydrozylinder zur Teleskopverstellung als Mehrfachteleskopzylinder ausgebildet.A preferred embodiment of the invention provides that the distance of the vertical pivot axis from the rear end of the jib box is at least is at least one fifth and at most two thirds of the length of the boom box. The distance of the pivot axis from the rear end of the boom box is advantageously between a four-part and a third of the length of the boom box. It is advantageous if the telescopic part that can be inserted into the extension box itself has at least two telescopic tubes that are guided into one another. Accordingly, the hydraulic cylinder for telescopic adjustment is designed as a multiple telescopic cylinder.
Zur Reduzierung der beim Ausfahren des Teleskopteils aus dem Ausleger- kästen auftretenden Reibungskräfte wird gemäß einer vorteilhaften Ausgestaltung der Erfindung vorgeschlagen, daß der Auslegerkasten in der Nähe seines austrittsseitigen vorderen Endes eine Stützrolle aufweist, auf der das Teleskopteil beim Ein- und Ausfahren abstützbar ist.In order to reduce the frictional forces that occur when the telescopic part extends from the boom boxes, it is proposed according to an advantageous embodiment of the invention that the boom box has a support roller near its exit-side front end, on which the telescopic part can be supported during the extension and retraction.
Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß der doppelt wirkende, vorzugsweise teleskopierbare Hydrozylinder in den beiden Endlagen vom rückwärtigen Ende des Auslegerkastens aus mit Hydraulikflüssigkeit beaufschlagbar ist. Zu diesem Zweck ist eine in axialer Richtung durch die Zylinder hindurchgeführte Anschlußleitung vorgesehen.A further advantageous embodiment of the invention provides that the double-acting, preferably telescopic hydraulic cylinder can be acted upon in the two end positions from the rear end of the boom box with hydraulic fluid. For this purpose, a connecting line is provided in the axial direction through the cylinder.
Vorteilhafterweise weist das am freien Ende des Teleskopteils angeordnete Fußteil einen hydraulischen Ausstellzylinder auf, der über eine auf eine Schlauchtrommel aufgewickelte Schlauchleitung mit Hydraulikflüssigkeit beaufschlagbar ist.Advantageously, the foot part arranged at the free end of the telescopic part has a hydraulic raising cylinder which can be acted upon with hydraulic fluid via a hose line wound on a hose drum.
Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß der vorzugsweise teleskopierbare Hydrozylinder mit seinem freien stangenseitigen Ende am Auslegerkasten und mit seinem freien bodenseitigen Ende am innersten Teleskoprohr des Teleskopteils befestigt ist. Die erfindungsgemäße Autobetonpumpe umfaßt ein mit mindestens einer Vorderachse und einer Hinterachse versehenes Fahrgestell, ein am Fahrgestell vorderachsnah angeordnetes Drehwerk für einen Betonverteilermast, eine hinter dem Drehwerk auf dem Fahrgestell montierte Pumpanordnung und eine am Fahrgestell angeordnete Stützkonstruktion. Die Stützkonstruktion weist ihrerseits zwei um je eine vertikale Schwenkachse zwischen einer Transportstellung und mindestens einer Abstützstellung verschwenkbare vordere Stützausleger und zwei rückwärtige Stützausleger auf. Die vorderen Stützausleger sind dabei mit ihren Auslegerkästen über geteilte Lagerbolzen in der Nähe des Drehwerks an je einer fahrgestellfesten Lagerstelle gelagert, wobei die Auslegerkästen an ihren beiden Enden quer zur Schwenkachse über die Lagerstelle überstehen. Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß die vorderen Stützausleger mit ihren Auslegerkästen bezüglich der Fahrgestelllängsachse in der Transportstellung bei eingezogenen Teleskopteilen parallel ausgerichtet sind und in Arbeitsstellung bei ausgefahrenen Teleskopteilen mit ihren Fußteilen schräg nach vorne über den Fahrgestellrand überstehen. Bevorzugt weisen die vorderen Stützausleger in Transportstellung mit ihren Fußteilen in Fahrtrichtung nach vorne. In diesem Fall ist der Platzbedarf beim Ausstellvorgang besonders klein. Grundsätzlich ist es jedoch auch möglich, daß die vorderen Stützausleger in Transportstellung mit ihren Fußteilen in Fahrtrichtung nach hinten weisen. Dies ist bei relativ geringem Platzaufwand besonders dann möglich, wenn die Teleskopteile als Mehrfachteleskop ausgebildet sind und dementsprechend ein relativ kurzer Auslegerkasten vorgesehen ist. Das vertikale Schwenklager der Stützausleger kann dabei nahe beim Drehwerk angeordnet werden, so daß sich ein günstiger Kraftfluß vom Betonverteilermast über das Drehwerk in die Stützausleger hinein ergibt.A preferred embodiment of the invention provides that the preferably telescopic hydraulic cylinder is attached with its free rod end to the boom box and with its free bottom end to the innermost telescopic tube of the telescopic part. The truck-mounted concrete pump according to the invention comprises a chassis provided with at least one front axle and a rear axle, a rotating mechanism for a concrete placing boom arranged near the front axle, a pump arrangement mounted behind the rotating mechanism on the chassis and a supporting structure arranged on the chassis. The support structure in turn has two front support arms pivotable about a vertical swivel axis between a transport position and at least one support position and two rear support arms. The front outrigger arms are mounted with their outrigger boxes over split bearing bolts near the slewing gear at a bearing location that is fixed to the chassis, with the outrigger boxes protruding across the pivot point at both ends transversely to the pivot axis. A preferred embodiment of the invention provides that the front outrigger arms are aligned with their boom boxes with respect to the longitudinal axis of the chassis in the transport position when the telescopic parts are retracted and in the working position with the telescopic parts extended, their foot parts protrude obliquely forward over the edge of the chassis. The front support arms preferably point forward in the transport direction with their foot parts in the direction of travel. In this case, the space required for the exhibition process is particularly small. In principle, however, it is also possible for the front outrigger arms to point rearward in the transport direction with their foot parts. This is particularly possible with a relatively small space requirement if the telescopic parts are designed as multiple telescopes and accordingly a relatively short boom box is provided. The vertical swivel bearing of the outrigger can be arranged close to the slewing gear, so that there is a favorable flow of force from the concrete placing boom via the slewing gear into the outrigger boom.
Grundsätzlich ist es möglich, auch die rückwärtigen Stützausleger als Tele- skopausleger der vorstehenden Art auszubilden und sie vorzugsweise in derIn principle, it is also possible to design the rear outrigger arms as telescopic arms of the above type, and preferably in the
Nähe des Drehwerks mit ihrem Auslegerkasten über geteilte Lagerbolzen an je einer fahrgestellfesten Lagerstelle zu lagern, wobei die Auslegerkästen an ihren beiden Enden quer zur Schwenkachse über die Lagerstelle überstehen. Auch die rückwärtigen Stützausleger können mit ihren Auslegerkästen bezüglich der Fahrgestelllängsachse in der Transportstellung bei eingezoge- nen Teleskopteilen parallel ausgerichtet werden und in der Arbeitsstellung bei ausgefahrenen Teleskopteilen mit ihren Fußteilen schräg nach hinten über den Fahrgestellrand überstehen. Die rückwärtigen Stützausleger weisen dabei in Transportstellung mit ihren Fußteilen zweckmäßig in Fahrtrichtung nach hinten. Diese Ausrichtung hat beim Ausfahren in die Arbeitsstel- lung den geringsten Platzbedarf. Grundsätzlich ist es jedoch auch möglich, die rückwärtigen Stützausleger in Transportstellung mit ihren Fußteilen in Fahrtrichtung nach vorne auszurichten.Near the slewing gear with its boom box via split bearing bolts to store a chassis-fixed bearing point, the jib boxes protruding at both ends across the pivot point transversely to the pivot axis. The rear outrigger arms can also be aligned with their outrigger boxes parallel to the longitudinal axis of the chassis in the transport position when the telescopic parts are retracted and in the working position with the telescopic parts extended, their foot parts protrude obliquely backwards over the edge of the chassis. The rear outriggers point in the transport position with their foot parts in the direction of travel to the rear. This orientation has the smallest space requirement when extending into the working position. In principle, however, it is also possible to align the rear outrigger with their foot parts in the direction of travel in the transport position.
Eine Verbesserung der Abstützstabilität kann erzielt werden, wenn die Ver- schiebeachse der Hydrozylinder mit der zugehörigen Schwenkachse der vorderen und/oder rückwärtigen Stützausleger einen von der Lagerstelle zum Fußteil hin abfallenden Schrägwinkel einschließt.An improvement in the support stability can be achieved if the displacement axis of the hydraulic cylinders with the associated pivot axis of the front and / or rear outrigger arms includes an oblique angle falling from the bearing point to the foot part.
Im folgenden wird die Erfindung anhand der in der Zeichnung in schemati- scher Weise dargestellten Ausführungsbeispiele näher erläutert. Es zeigenThe invention is explained in more detail below on the basis of the exemplary embodiments shown schematically in the drawing. Show it
Fig. 1a und b eine teilweise geschnittene Seitenansicht eines Stützauslegers für eine Autobetonpumpe in ausgefahrenem und eingezogenem Zustand;1a and b show a partially sectioned side view of a support boom for a truck-mounted concrete pump in the extended and retracted state;
Fig. 2a eine Seitenansicht einer Autobetonpumpe mit vorderen Stützauslegern nach Fig. 1b in Transportstellung;2a shows a side view of a truck-mounted concrete pump with front support arms according to FIG. 1b in the transport position;
Fig. 2b eine Draufsicht auf die Autobetonpumpe mit Stützauslegern in ver- schiedenen Stellungen; Fig. 3a und b ein zweites Ausführungsbeispiel einer Autobetonpumpe mit vorderen und rückwärtigen Stützauslegern nach Fig. 1a und b in Darstellungen entsprechend Fig. 2a und b;2b shows a top view of the truck-mounted concrete pump with support booms in different positions; 3a and b a second embodiment of a truck-mounted concrete pump with front and rear support arms according to FIGS. 1a and b in representations corresponding to FIGS. 2a and b;
Fig. 4a und b ein drittes Ausführungsbeispiel einer Autobetonpumpe in Darstellungen entsprechend Fig. 3a und b;4a and b show a third embodiment of a truck-mounted concrete pump in representations corresponding to FIGS. 3a and b;
Fig. 5a und b ein viertes Ausführungsbeispiel einer Autobetonpumpe in5a and b a fourth embodiment of a truck-mounted concrete pump in
Darstellungen entsprechend Fig. 3a und b;Representations corresponding to Figures 3a and b;
Fig. 6a bis c drei weitere Ausführungsbeispiele einer Autobetonpumpe in6a to c three further embodiments of a truck-mounted concrete pump in
Darstellungen entsprechend Fig. 2a, 3a und 4a.Representations corresponding to Fig. 2a, 3a and 4a.
Die in der Zeichnung dargestellten Autobetonpumpen bestehen im wesentli- chen aus einem mehrachsigen Fahrgestell 10 mit zwei Vorderachsen 11 und drei Hinterachsen 12, mit einem Führerhaus 13, einem an einem vorderachsnahen Drehwerk 14 um eine vertikale Achse drehbar gelagerten Betonverteilermast 15, mit einer im Abstand vom Drehwerk 14 auf dem Fahrgestell 10 montierten Pumpanordnung 16 sowie einer Stützkonstruktion 18 für das Fahrgestell 10. Die Stützkonstruktion 18 weist einen fahrgestellfesten Tragrahmen 19 auf und umfaßt zwei vordere Stützausleger 20 und zwei rückwärtige Stützausleger 22,22', die in der Transportstellung eingezogen und parallel zur Fahrzeuglängsachse 24 ausgerichtet sind und in der Abstützstellung schräg nach vorne bzw. hinten über das Fahrgestell 10 über- stehen und mit ihren Fußteilen 26,28 auf dem Boden 30 abgestützt sind.The truck-mounted concrete pumps shown in the drawing essentially consist of a multi-axle chassis 10 with two front axles 11 and three rear axles 12, with a driver's cab 13, a concrete placing boom 15 mounted on a slewing gear 14 near a front axle and rotatable about a vertical axis, with a spacing from Slewing gear 14 on the chassis 10 mounted pump assembly 16 and a support structure 18 for the chassis 10. The support structure 18 has a support frame 19 fixed to the chassis and comprises two front outrigger arms 20 and two rear outrigger arms 22, 22 'which are drawn in in the transport position and parallel to the Longitudinal vehicle axis 24 are aligned and protrude obliquely forward or backward over the chassis 10 in the support position and are supported on the floor 30 with their foot parts 26, 28.
Die vorderen Stützausleger 20 sind um ihre vertikalen Schwenkachsen 32 und die rückwärtigen Schwenkausleger 22,22' um ihre vertikalen Schwenkachsen 34 zwischen der Transportstellung und der Abstützstellung unter der Einwirkung je eines Ausstellzylinders 36 verschwenkbar. Grundsätzlich ist es bei einem abgewandelten Ausführungsbeispiel auch möglich, daß die einan- der benachbarten vorderen und rückwärtigen Stützausleger über einen gemeinsamen Antrieb verschwenkt werden. Zusätzlich sind bei allen Ausführungsbeispielen die vorderen Stützausleger 20 und bei einem Teil der Ausführungsbeispiele auch die rückwärtigen Stützausleger 22 als Teleskopaus- leger ausgebildet.The front support arms 20 can be pivoted about their vertical pivot axes 32 and the rear pivot arms 22, 22 'about their vertical pivot axes 34 between the transport position and the support position under the action of one deployment cylinder 36 each. Basically, in a modified embodiment it is also possible that the different the adjacent front and rear outrigger can be pivoted via a common drive. In addition, in all of the exemplary embodiments, the front outrigger arms 20 and in some of the exemplary embodiments also the rear outrigger arms 22 are designed as telescopic arms.
Wie insbesondere aus Fig. 1a und b zu ersehen ist, umfassen sie jeweils einen um die vertikale Schwenkachse 32 bzw. 34 gegenüber dem Fahrgestell verschwenkbaren Auslegerkasten 38 und ein aus drei Teleskoprohren 40',40",40'" bestehendes Teleskopteil 40 auf. Durch den Auslegerkasten 38 und das Teleskopteil 40 hindurch erstreckt sich ein mehrfach teleskopierba- rer, doppelt wirkender Hydrozylinder 42, der an seinem äußersten stangen- seitigen Ende 44 an einer Befestigungsstelle 46 des Auslegerkastens und mit seinem äußersten bodenseitigen Ende 48 an einer Befestigungsstelle 50 des Teleskoprohrs 40'" angelenkt ist. Die Befestigungsstelle 46 befindet sich dabei am rückwärtigen Ende des Auslegerkastens 38, während sich die Befestigungsstelle 50 am vorderen Ende des Teleskoprohrs 40"' befindet, so daß sich der Hydrozylinder 42 sowohl in der ausgefahrenen Stellung gemäß Fig. 1a, als auch in der eingezogenen Endstellung gemäß Fig. 1b vollständig innerhalb des Stützauslegers 20 angeordnet ist.As can be seen in particular from FIGS. 1a and b, they each comprise an extension box 38 which can be pivoted about the vertical pivot axis 32 or 34 relative to the chassis and a telescopic part 40 consisting of three telescopic tubes 40 ', 40 ", 40'". A multi-telescopic, double-acting hydraulic cylinder 42 extends through the boom box 38 and the telescopic part 40 and has at its outermost rod-side end 44 at a fastening point 46 of the boom box and with its outermost bottom-side end 48 at a fastening point 50 of the telescopic tube The fastening point 46 is located at the rear end of the boom box 38, while the fastening point 50 is located at the front end of the telescopic tube 40 '', so that the hydraulic cylinder 42 is both in the extended position according to FIG. and also in the retracted end position according to FIG. 1b is arranged entirely within the support arm 20.
Eine Besonderheit der teleskopierbaren Stützausleger 20 besteht darin, daß ihre vertikale Schwenkachse 32 durch eine in axialem Abstand S von der rückwärtigen Befestigungsstelle 46 in Richtung Fußteil 26 am Auslegerka- sten 38 angeordnete, einschnittig geteilte Lagerstelle 54 gebildet ist, die so positioniert ist, daß sie die Verschiebeachse 52 des Hydrozylinders 42 quer schneidet. Die einschnittig geteilte Lagerstelle 54 ist dabei durch zwei am Auslegerkasten 38 einander diametral gegenüberliegende Lageraugen gebildet, die zur Aufnahme eines zweigeteilten Lagerbolzens 56 bestimmt sind. Damit wird erreicht, daß der Lagerbolzen 56 den Auslegerkasten 38 nicht durchdringt. Bei den gezeigten Ausführungsbeispielen beträgt der Abstand der Schwenkachse 32 von der Befestigungsstelle 46 etwa ein Drittel der Länge des Auslegerkastens 38. Da die Schwenkachsen 32 der teleskopierbaren Stützausleger 20 in der Nähe des Seitenrandes des Fahrgestells 10 angeordnet sind, wird mit den beschriebenen Maßnahmen erreicht, daß der rückwärtige Teil des Auslegerkastens 38 beim Ausschwenken des Stützauslegers in den Bereich des Fahrgestells 10 hineingeschwenkt wird, so daß der Platzbedarf beim Ausstellvorgang relativ klein ist. Wie aus den Fig. 2b, 3b, 4b und 5b zu ersehen ist, kann je nach Ausstellwinkel der Stützausleger neben der Normalabstützung (unten) auch eine Schmalab- Stützung (oben) gewählt werden. Damit ist eine Anpassung an gegebene Platzverhältnisse im Bereich der Baustelle möglich. Zum Ausfahren werden die teleskopierbaren Stützausleger 20 zunächst um die vertikale Schwenkachse 32 nach außen geschwenkt und sodann über die Hydrozylinder 42 teleskopiert. Um die beim Aus- und Einfahren der Teleskopteile 40 zu über- windenden Reibungskräfte zu reduzieren, sind am vorderen Ende der Auslegerkasten 38 Stützrollen 62 angeordnet, auf denen das äußere Teleskoprohr 40' der Teleskopteile 40 abrollt. Das Ausfahren der Fußteile 26 erfolgt ebenfalls hydraulisch. Die hierfür erforderliche Hydraulikzufuhr erfolgt über eine Hydraulikleitung 58, die von einer Schlauchtrommel 60 abwickelbar ist. Das Einfahren der teleskopierbaren Stützausleger 20 erfolgt in umgekehrter Reihenfolge, wobei zunächst die Fußteile 26 vom Boden abgehoben und gegebenenfalls in eine in Fig. 6a bis c gezeigte Transportstellung nach oben überstehend angehoben werden, sodann die Teleskoprohre 40',40",40'" über den Hydrozylinder 42 in den Auslegerkasten 38 zurückgezogen und anschließend die Auslegerkästen 38 um die vertikalen Schwenkachsen 32 mit Hilfe des Ausstellzylinders 36 eingeschwenkt werden.A special feature of the telescopic support boom 20 is that its vertical pivot axis 32 is formed by a bearing section 54 which is arranged in one section and is positioned in such a way that it is positioned at an axial distance S from the rear fastening point 46 in the direction of the foot part 26 on the boom box 38 the displacement axis 52 of the hydraulic cylinder 42 intersects transversely. The bearing section 54, which is divided into one section, is formed by two bearing eyes diametrically opposite one another on the extension box 38, which are intended for receiving a two-part bearing bolt 56. This ensures that the bearing pin 56 does not penetrate the boom box 38. In the exemplary embodiments shown, the distance is the pivot axis 32 from the attachment point 46 about a third of the length of the boom box 38. Since the pivot axes 32 of the telescopic support boom 20 are arranged near the side edge of the chassis 10, it is achieved with the measures described that the rear part of the boom box 38 at Swinging out the support boom is pivoted into the area of the chassis 10, so that the space required during the exhibition process is relatively small. As can be seen from FIGS. 2b, 3b, 4b and 5b, depending on the deployment angle of the support boom, in addition to the normal support (below), a narrow support (above) can also be selected. This enables adaptation to the available space in the area of the construction site. To extend the telescopic support boom 20 are first pivoted outward about the vertical pivot axis 32 and then telescoped via the hydraulic cylinder 42. In order to reduce the frictional forces to be overcome when extending and retracting the telescopic parts 40, support rollers 62 are arranged at the front end of the extension box 38, on which the outer telescopic tube 40 ′ of the telescopic parts 40 rolls. The foot parts 26 are also extended hydraulically. The hydraulic supply required for this takes place via a hydraulic line 58 which can be unwound from a hose drum 60. The telescopic support arms 20 are retracted in the reverse order, with the foot parts 26 first being lifted off the floor and possibly raised in a transport position shown in FIGS the hydraulic cylinder 42 is withdrawn into the boom box 38 and then the boom boxes 38 are pivoted about the vertical pivot axes 32 with the aid of the raising cylinder 36.
Bei den Ausführungsbeispielen nach Fig. 2a und b und 3a und b sind nur die vorderen Stützausleger 20 als Teleskopausleger im Sinne der vorstehenden Ausführungen ausgebildet. Die rückwärtigen Stützausleger sind als einfacheIn the exemplary embodiments according to FIGS. 2a and b and 3a and b, only the front support arms 20 are designed as telescopic arms in the sense of the above statements. The rear outriggers are as simple
Schwenkbeine ausgebildet. Während im Falle der Fig. 2a und b die vorderen Stützausleger 20 in der Transportstellung mit ihren Fußteilen 26 nach vorne weisen, weisen sie im Falle der Fig. 3a und b in der Transportstellung mit ihren Fußteilen 26 nach hinten. Im letzteren Falle kann die Schwenkachse 32 gegenüber Fig. 2a und b weiter in Richtung Führerhaus 31 gelegt wer- den, mit Vorteilen für die Abstützweite, wofür allerdings ein etwas größerer Platzbedarf beim Ein- und Ausschwenken entsteht.Swivel legs trained. While in the case of FIGS. 2a and b the front Support arms 20 point forward with their foot parts 26 in the transport position, in the case of FIGS. 3a and b they point backwards with their foot parts 26 in the transport position. In the latter case, the pivot axis 32 can be placed further in the direction of the driver's cab 31 compared to FIGS. 2a and b, with advantages for the support width, which, however, results in a somewhat larger space requirement when pivoting in and out.
Bei den Ausführungsbeispielen nach Fig. 4a und b, 5a und b sind sowohl die vorderen als auch die rückwärtigen Stützausleger 20,22 als Teleskopausle- ger ausgebildet. Der einzige Unterschied bei diesen Ausführungsbeispielen besteht darin, daß die rückwärtigen Stützausleger in der Transportstellung im Falle der Fig. 4a und b nach hinten und im Falle der Fig. 5a und b nach vorne weisen. Die Vor- und Nachteile dieser beiden Konstruktionen sind wiederum darin zu sehen, daß eine in der Transportstellung platzmäßig etwas günstigere Anordnung der rückwärtigen Stützausleger durch einen etwas größeren Schwenkbereich beim Ausstellvorgang erkauft werden muß.In the exemplary embodiments according to FIGS. 4a and b, 5a and b, both the front and the rear support arms 20, 22 are designed as telescopic arms. The only difference in these embodiments is that the rear outriggers point in the transport position in the case of FIGS. 4a and b to the rear and in the case of FIGS. 5a and b to the front. The advantages and disadvantages of these two constructions are again to be seen in the fact that an arrangement of the rear outrigger arms that is somewhat cheaper in terms of space in the transport position has to be purchased by a somewhat larger pivoting range during the exhibiting process.
Im Falle der in Fig. 6a bis c gezeigten Ausführungsbeispiele können im Transportzustand die Fußteile 26,28 vollständig eingezogen werden, mit dem Vorteil einer größeren Bodenfreiheit der Autobetonpumpe.In the case of the exemplary embodiments shown in FIGS. 6a to c, the foot parts 26, 28 can be completely retracted in the transport state, with the advantage of a greater ground clearance of the truck-mounted concrete pump.
Zusammenfassend ist folgendes festzuhalten: Die Erfindung bezieht sich auf einen Stützausleger für fahrbare Arbeitsmaschinen, insbesondere für Autobetonpumpen. Der Stützausleger 20 weist eine um eine vertikale Schwenk- achse 32 an einem Fahrgestell 10 verschwenkbaren Auslegerkasten 38, ein teleskopartig relativ zum Auslegerkasten verschiebbares Teleskopteil 40, einen sich durch den Auslegerkasten 38 und das Teleskopteil 40 hindurch erstreckenden doppeltwirkenden Hydrozylinder 42 und ein am vorderen Ende des Teleskopteils 40 angeordnetes, vertikal verstellbares Fußteil 26 auf. Der teleskopierbare Hydrozylinder 42 ist mit seinen beiden Enden an Befestigungsstellen 46,50 im Bereich der einander abgewandten Enden des Auslegerkastens 38 und des Teleskopteils 40 befestigt. Um den Platzbedarf sowohl in der Transportstellung als auch beim Ausstellen der Stützausleger zu reduzieren und dennoch eine stabile Abstützung zu gewährleisten, wird gemäß der Erfindung vorgeschlagen, daß die vertikale Schwenkachse 32 durch eine in axialem Abstand S von der rückwärtigen Befestigungsstelle 46 in Richtung Fußteil am Auslegerkasten 38 angeordnete, einschnittig geteilte Lagerstelle gebildet und so positioniert ist, daß sie die Verschiebeachse 52 des Hydrozylinders 42 quer schneidet. In summary, the following can be stated: The invention relates to a support boom for mobile machines, in particular for truck-mounted concrete pumps. The support boom 20 has a boom box 38 which can be pivoted about a vertical pivot axis 32 on a chassis 10, a telescopic part 40 which can be displaced telescopically relative to the boom box, a double-acting hydraulic cylinder 42 which extends through the boom box 38 and the telescopic part 40, and one at the front end of the boom Telescopic part 40 arranged, vertically adjustable foot part 26. The telescopic hydraulic cylinder 42 is with its two ends at fastening points 46, 50 in the region of the opposite ends of the Boom box 38 and the telescopic part 40 attached. In order to reduce the space requirement both in the transport position and when the outrigger is being deployed and nevertheless to ensure stable support, it is proposed according to the invention that the vertical pivot axis 32 by an axial distance S from the rear attachment point 46 in the direction of the foot part on the outrigger box 38 arranged, single-section bearing point is formed and positioned so that it intersects the displacement axis 52 of the hydraulic cylinder 42 transversely.

Claims

Patentansprüche claims
1. Stützausleger für fahrbare Arbeitsmaschinen, insbesondere für Autobetonpumpen, mit einem um eine vertikale Schwenkachse (32) an ei- nem Fahrgestell (10) verschwenkbaren Auslegerkasten (38), mit einem teleskopartig relativ zum Auslegerkasten (38) verschiebbaren Teleskopteil (40) und mit einem am vorderen Ende des Teleskopteils (40) angeordneten, gegebenenfalls vertikal verstellbaren Fußteil (26), dadurch gekennzeichnet, daß sich durch den Auslegerkasten und das Teleskopteil hindurch ein doppeltwirkender Hydrozylinder (42) erstreckt, der an seinen beiden Enden an Befestigungsstellen (46,50) im Bereich der einander abgewandten Enden des Auslegerkastens (38) und des Teleskopteils (40) befestigt ist, und daß die vertikale Schwenkachse (32) durch eine in axialem Abstand (S) von der rückwärtigen Befesti- gungsstelle (46) in Richtung Fußteil (28) am Auslegerkasten (38) angeordnete, geteilte Lagerstelle (54) gebildet und so positioniert ist, daß sie die Verschiebeachse (52) des Hydrozylinders (42) quer schneidet.1. Support boom for mobile machines, in particular for truck-mounted concrete pumps, with a boom box (38) which can be pivoted about a vertical pivot axis (32) on a chassis (10), with a telescopic part (40) which can be displaced telescopically relative to the boom box (38) and with an optionally vertically adjustable foot part (26) arranged at the front end of the telescopic part (40), characterized in that a double-acting hydraulic cylinder (42) extends through the outrigger box and the telescopic part and has fastening points (46, 50) at both ends ) is fastened in the area of the ends of the jib box (38) and the telescopic part (40) facing away from each other, and that the vertical pivot axis (32) is axially spaced (S) from the rear fastening point (46) in the direction of the foot part ( 28) on the boom box (38) arranged, split bearing (54) is formed and positioned so that it the displacement axis (52) of the hyd rozylinders (42) cuts across.
2. Stützausleger nach Anspruch 1, dadurch gekennzeichnet, daß die Lagerstelle (54) durch zwei am Auslegerkasten (38) einander diametral gegenüberliegende Lageraugen oder Lagerzapfen (56) gebildet ist.2. A jib according to claim 1, characterized in that the bearing point (54) is formed by two diametrically opposite bearing eyes or bearing journals (56) on the jib box (38).
3. Stützausleger nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Teleskopteil (40) mindestens zwei ineinander geführte Teleskop- röhre (40',40",40"') aufweist.3. Outrigger according to claim 1 or 2, characterized in that the telescopic part (40) has at least two telescoping tubes (40 ', 40 ", 40"').
4. Stützausleger nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Abstand (S) der Schwenkachse (32) vom rückwärtigen Ende des Auslegerkastens (38) mindestens ein Fünftel und höch- stens zwei Drittel der Auslegerkastenlänge beträgt. 4. Support boom according to one of claims 1 to 3, characterized in that the distance (S) of the pivot axis (32) from the rear end of the boom box (38) is at least one fifth and at most two thirds of the boom box length.
5. Stützausleger nach Anspruch 4, dadurch gekennzeichnet, daß der Abstand (S) der Schwenkachse (32) vom rückwärtigen Ende des Auslegerkastens zwischen einem Viertel und einem Drittel der Länge des Auslegerkastens beträgt.5. jib according to claim 4, characterized in that the distance (S) of the pivot axis (32) from the rear end of the boom box is between a quarter and a third of the length of the boom box.
6. Stützausleger nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Auslegerkasten (38) in der Nähe seines vorderen Endes ein Rollen- oder Gleitlager (62) aufweist, auf dem das Teleskopteil (40) beim Ein- und Ausfahren abstützbar ist.6. Outrigger according to one of claims 1 to 5, characterized in that the boom box (38) near its front end has a roller or slide bearing (62) on which the telescopic part (40) can be supported when retracting and extending ,
Stützausleger nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Hydrozylinder (42) vom rückwärtigen Ende des Auslegerkastens (38) aus boden- oder stangenseitig mit Hydraulikflüssigkeit beaufschlagbar ist.Support boom according to one of claims 1 to 6, characterized in that the hydraulic cylinder (42) can be acted upon with hydraulic fluid from the rear or end of the boom box (38) on the base or rod side.
8. Stützausleger nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der als Teleskopzylinder ausgebildete Hydrozylinder (42) mit seinem äußersten stangenseitigen Ende (44) am Auslegerkasten (38) und mit seinem äußersten bodenseitigen Ende (48) am innersten Teleskoprohr (40'") befestigt ist.8. Outrigger according to one of claims 1 to 7, characterized in that the hydraulic cylinder (42) designed as a telescopic cylinder with its outermost rod end (44) on the boom box (38) and with its outermost bottom end (48) on the innermost telescopic tube (40 '") is attached.
9. Stützausleger nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Fußteil (28) einen hydraulischen Ausstellzylinder aufweist, der über eine auf eine Schlauchtrommel (60) aufwickelbare Schlauchleitung (58) mit Hydraulikflüssigkeit beaufschlagbar ist.9. A jib according to one of claims 1 to 8, characterized in that the foot part (28) has a hydraulic raising cylinder which can be acted upon with hydraulic fluid via a hose line (58) which can be wound up on a hose drum (60).
10. Autobetonpumpe mit einem mindestens eine Vorderachse (11) und eine Hinterachse (12) aufweisenden Fahrgestell (10), mit einem am Fahrgestell (10) vorderachsnah angeordneten Drehwerk (14) für einen Verteilermast (15), mit einer hinter dem Drehwerk (14) auf dem Fahrgestell (10) montierten Pumpanordnung (16) und mit einer am Fahrgestell (10) angeordneten Stützkonstruktion (18), die zwei um je eine vertikale Schwenkachse (32) zwischen einer Transportstellung und mindestens einer Abstützstellung verschwenkbare vordere Stützausleger (20) und zwei rückwärtige Stützausleger (22,22') aufweist, dadurch gekenn- zeichnet, daß die entsprechend einem der Ansprüche 1 bis 9 ausgebildeten vorderen Stützausleger (20) mit ihren Auslegerkästen (38) über geteilte Lagerbolzen (56) in der Nähe des Drehwerks (14) an je einer fahrgestellfesten Lagerstelle (54) gelagert sind, wobei die Auslegerkästen (38) an ihren beiden Enden quer zur Schwenkachse (32) über die Lagerstelle (54) überstehen.10. truck-mounted concrete pump with a chassis (10) having at least one front axle (11) and one rear axle (12), with a rotating mechanism (14) for a placing boom (15) arranged near the front axle on the chassis (10), with one behind the rotating mechanism (14 ) on the chassis (10) mounted pump assembly (16) and with one on the chassis (10) arranged support structure (18), which has two front support arms (20) which can be pivoted about a vertical pivot axis (32) between a transport position and at least one support position, and two rear support arms (22, 22 '), characterized in that the front outrigger arms (20) designed in accordance with one of claims 1 to 9 with their outrigger boxes (38) are mounted in the vicinity of the slewing gear (14) via split bearing bolts (56) at a respective bearing point (54) fixed to the chassis, the outrigger boxes (38 ) project beyond the bearing point (54) at both ends transversely to the pivot axis (32).
11. Autobetonpumpe nach Anspruch 10, dadurch gekennzeichnet, daß die vorderen Stützausleger (20) mit ihren Auslegerkästen (38) bezüglich der Fahrgestelllängsachse (24) in der Transportstellung bei einge- zogenen Teleskopteilen parallel ausgerichtet sind und in Abstützstellung bei ausgefahrenen Teleskopteilen (40) mit ihren Fußteilen (26) schräg nach vorne über den Fahrgestellrand überstehen.11. Truck-mounted concrete pump according to claim 10, characterized in that the front support boom (20) with its boom boxes (38) with respect to the longitudinal axis (24) in the transport position with the telescopic parts retracted and aligned in the support position with the telescopic parts extended (40) protrude their foot parts (26) obliquely forward over the edge of the chassis.
12. Autobetonpumpe nach Anspruch 11, dadurch gekennzeichnet, daß die vorderern Stützausleger (20) in Transportstellung mit ihren Fußteilen (26) in Fahrtrichtung nach vorne weisen.12. truck-mounted concrete pump according to claim 11, characterized in that the front support boom (20) in the transport position with their foot parts (26) point forward in the direction of travel.
13. Anordnung nach Anspruch 11, dadurch gekennzeichnet, daß die vorderen Stützausleger (20) in Transportstellung mit ihren Fußteilen (26) in Fahrtrichtung nach hinten weisen.13. The arrangement according to claim 11, characterized in that the front support boom (20) in the transport position with their foot parts (26) point in the direction of travel to the rear.
14. Anordnung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß die entsprechend einem der Ansprüche 1 bis 9 ausgebildeten rückwärtigen Stützausleger (22) mit ihren Auslegerkästen (38) über geteilte Lagerbolzen (56) an je einer fahrgestellfesten Lagerstelle gelagert sind, wobei die Auslegerkästen (38) an ihren beiden Enden quer zur Schwenkachse (34) über die Lagerstelle überstehen.14. Arrangement according to one of claims 10 to 13, characterized in that the rear support bracket (22) designed according to one of claims 1 to 9 with its bracket boxes (38) via split bearing bolts (56) at a respective chassis-fixed bearing point are stored, the boom boxes (38) projecting at both ends transversely to the pivot axis (34) beyond the bearing point.
15. Autobetonpumpe nach Anspruch 14, dadurch gekennzeichnet, daß die rückwärtigen Stützausleger (22) mit ihren Auslegerkästen (38) bezüglich der Fahrgestelllängsachse (24) in der Transportstellung bei eingezogenen Teleskopteilen (40) parallel ausgerichtet sind und in der Arbeitsstellung bei ausgefahrenen Teleskopteilen (40) mit ihren Fußteilen (28) schräg nach hinten über den Fahrgestellrand überstehen.15. truck-mounted concrete pump according to claim 14, characterized in that the rear support boom (22) with their boom boxes (38) with respect to the longitudinal axis (24) in the transport position with the telescopic parts (40) are aligned in parallel and in the working position with the telescopic parts extended (40 ) with their foot parts (28) protrude obliquely backwards over the chassis edge.
16. Autobetonpumpe nach Anspruch 15, dadurch gekennzeichnet, daß die rückwärtigen Stützausleger (22) in Transportstellung mit ihren Fußteilen (28) in Fahrtrichtung nach hinten weisen. ■16. Truck-mounted concrete pump according to claim 15, characterized in that the rear outriggers (22) point in the transport position with their foot parts (28) in the direction of travel to the rear. ■
17. Autobetonpumpe nach Anspruch 15, dadurch gekennzeichnet, daß die rückwärtigen Stützausleger (22) in Transportstellung mit ihren Fußteilen (28) in Fahrtrichtung nach vorne weisen.17. truck-mounted concrete pump according to claim 15, characterized in that the rear support boom (22) in the transport position with their foot parts (28) point forward in the direction of travel.
18. Autobetonpumpe nach einem der Ansprüche 10 bis 17, dadurch ge« kennzeichnet, daß die Verschiebeachse (52) des Hydrozylinders (42) mit der zugehörigen Schwenkachse (32,34) der vorderen und/oder rückwärtigen Stützausleger (20,22) einen von der Lagerstelle (54) zum18. Truck-mounted concrete pump according to one of claims 10 to 17, characterized in that the displacement axis (52) of the hydraulic cylinder (42) with the associated pivot axis (32, 34) of the front and / or rear support boom (20, 22) is one of the bearing (54) to
Fußteil (26,28) hin abfallenden Schrägwinkel einschließen.Include the foot section (26, 28) towards the sloping angle.
19. Autobetonpumpe nach einem der Ansprüche 10 bis 18, dadurch gekennzeichnet, daß die Fußteile (26,28) an den Stützauslegern (20,22) in der Abstützstellung nach unten ausgefahren sind und in der Transportstellung nach oben über die Teleskopteile (40) überstehend eingezogen sind. 19. Truck-mounted concrete pump according to one of claims 10 to 18, characterized in that the foot parts (26, 28) on the support arms (20, 22) are extended downward in the supporting position and projecting upward in the transport position via the telescopic parts (40) have moved in.
EP01945197A 2000-07-07 2001-05-26 Support booms for mobile working machines and mobile concrete pump with said support booms Expired - Lifetime EP1299598B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10032622 2000-07-07
DE10032622A DE10032622A1 (en) 2000-07-07 2000-07-07 Concrete pumping vehicle as footed boom reciprocates boom by double-acting hydraulic cylinder led through boom box and telescoping parts so box swivel axis intersects cylinder axis at right angles.
PCT/EP2001/006032 WO2002008522A2 (en) 2000-07-07 2001-05-26 Support booms for mobile working machines and mobile concrete pump with said support booms

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EP (1) EP1299598B1 (en)
JP (1) JP4035442B2 (en)
KR (1) KR100748781B1 (en)
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DE10032622A1 (en) 2002-01-17
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WO2002008522A2 (en) 2002-01-31
WO2002008522A3 (en) 2002-04-18
EP1299598B1 (en) 2004-02-25
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CN1225398C (en) 2005-11-02
TR200400646T4 (en) 2004-06-21
JP2004504241A (en) 2004-02-12
JP4035442B2 (en) 2008-01-23
ES2213704T3 (en) 2004-09-01
US20030038466A1 (en) 2003-02-27
CN1440364A (en) 2003-09-03
ATE260374T1 (en) 2004-03-15

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