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)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7647844

Family Applications (1)

Country Status (10)

Families Citing this family (68)

Family Cites Families (33)

• 2000
  • 2000-07-07 DE DE10032622A patent/DE10032622A1/de not_active Withdrawn
• 2001
  • 2001-05-26 DE DE50101566T patent/DE50101566D1/de not_active Expired - Lifetime
  • 2001-05-26 KR KR1020027014148A patent/KR100748781B1/ko not_active IP Right Cessation
  • 2001-05-26 EP EP01945197A patent/EP1299598B1/fr not_active Expired - Lifetime
  • 2001-05-26 ES ES01945197T patent/ES2213704T3/es not_active Expired - Lifetime
  • 2001-05-26 US US10/239,495 patent/US6840540B2/en not_active Expired - Lifetime
  • 2001-05-26 AT AT01945197T patent/ATE260374T1/de active
  • 2001-05-26 JP JP2002513994A patent/JP4035442B2/ja not_active Expired - Fee Related
  • 2001-05-26 TR TR2004/00646T patent/TR200400646T4/ unknown
  • 2001-05-26 WO PCT/EP2001/006032 patent/WO2002008522A2/fr active IP Right Grant
  • 2001-05-26 CN CNB018086268A patent/CN1225398C/zh not_active Expired - Fee Related

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events