EP4263978A1 - Structure pour transporter un mât de distribution de béton - Google Patents

Structure pour transporter un mât de distribution de béton

Info

Publication number
EP4263978A1
EP4263978A1 EP21815489.6A EP21815489A EP4263978A1 EP 4263978 A1 EP4263978 A1 EP 4263978A1 EP 21815489 A EP21815489 A EP 21815489A EP 4263978 A1 EP4263978 A1 EP 4263978A1
Authority
EP
European Patent Office
Prior art keywords
profile
sheets
force
carrier
carrier profile
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.)
Pending
Application number
EP21815489.6A
Other languages
German (de)
English (en)
Inventor
Dietmar FÜGEL
Benedikt PAWISA
Werner Schneider
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 Engineering GmbH
Original Assignee
Putzmeister Engineering 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 Engineering GmbH filed Critical Putzmeister Engineering GmbH
Publication of EP4263978A1 publication Critical patent/EP4263978A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/09—Means for mounting load bearing surfaces

Definitions

  • the subject matter of the present invention is a framework for carrying a concrete placing boom.
  • a concrete placing boom which is carried by a frame, is regularly used to spread concrete using mobile or stationary concrete pumps.
  • a so-called mast bracket is usually fixed to the frame, on which the concrete spreader is mounted so that it can rotate about a vertical axis.
  • the concrete placing boom can also be constructed from a number of boom segments which are designed to be pivotable relative to one another in order to achieve a desired application location.
  • the concrete, which is pressurized by a pumping device, can be discharged at a desired location via a concrete delivery line routed along the concrete placing boom.
  • the framework usually has two support profiles which are aligned in the longitudinal direction of the framework and serve to transmit the flow of force.
  • the framework according to the invention for supporting a concrete placing boom comprises a carrier profile which has at least one force absorption area for absorbing a force flow exerted by the concrete placing boom and a force dissipation area spaced apart in the longitudinal direction of the carrier profile for dissipating the force flow into a subsoil.
  • the carrier profile comprises at least two profile sheets, each of which is bent along at least one bending axis and assembled along at least two connecting lines to form a hollow profile.
  • the framework according to the invention has at least one and preferably two carrier profiles which can be aligned parallel to one another, for example. For the sake of simplicity, only the configuration of a single carrier profile is explained at many points within the scope of the present description. It goes without saying that the framework according to the invention can also have two or more carrier profiles, which can also have the features explained in the context of the present description.
  • the carrier profile usually has a longitudinal direction along which the flow of forces is directed from the force absorption area to the force dissipation area. This longitudinal direction can correspond to the longitudinal direction of the framework.
  • the framework can in particular have a mast bracket, which is used to connect the concrete placing boom.
  • the mast bracket is usually firmly connected to the carrier profile in the force absorption area of the carrier profile and is preferably set up for the rotatable mounting of the concrete placing boom about a vertical axis.
  • the framework can also have a support system connected to the carrier profile in the force dissipation area, which is designed to introduce the force flow transmitted by the carrier profile into the subsoil.
  • the framework differs from support structures in which the flow of forces from the mast head is introduced directly into a support structure formed from support leg boxes and into associated support legs that can be moved or swiveled out (see, for example, EP 3 369 876 A1).
  • a support structure formed from support leg boxes and into associated support legs that can be moved or swiveled out.
  • rear support legs are not absolutely necessary, since the carrier profile, together with a support system attached to it, already assumes a corresponding rear support function. Since rear support legs drive or Swiveling out take up a lot of space during use, the space requirement of the present frame structure is correspondingly reduced. In addition, there is more loading space available on the frame due to the lack of rear support legs.
  • the canted profiled sheets make it possible to produce a carrier profile that is economical and reliable and flexible in use.
  • assembling along two connecting lines, on which the profile sheets can be screwed or welded together, for example, leads to a stable and low-distortion carrier profile.
  • the cross-sectional shape of the support profiles can be adjusted much more easily by suitably selecting the bending axes and bending angles compared to previously known square tube frames, the shape of which is predetermined by the extrusion process.
  • the add-on parts can be, for example, platform holders, parts of the support system, holding devices for the pumping device, for lines or for a water tank, a connecting strut for connecting the mast bracket to the carrier profile and/or parts of the mast support bracket.
  • at least one of the profiled metal sheets therefore has a fastening opening for fixing an add-on part to the carrier profile.
  • the fastening opening can form a passage to an interior area of the hollow profile.
  • the subsequent production of fastening openings is extremely complex, so that add-on parts are usually fastened by means of welded connections.
  • the fastening openings prefabricated at the desired positions on the carrier profile of the framework described here enable a flexible and detachable assembly of add-on parts.
  • the detachability of the attachments free spaces can be created fen, the repair and maintenance of otherwise allow components blocked by the dismantling parts.
  • An access opening may be provided adjacent a mounting opening. In this way, easy access to a fastener is possible, which can be used to fix an attachment in the mounting hole. This applies in particular when the fastening opening forms a passage to an interior area of the hollow profile.
  • the attachment openings can have an area of more than 0.3 cm 2 .
  • the area of the attachment openings can be, for example, in a range between 0.3 cm 2 and 20 cm 2 , preferably between 0.5 cm 2 and 10 cm 2 and more preferably between 0.8 cm 2 and 2 cm 2 .
  • Access openings can have an area greater than 100 cm 2 .
  • the area of the access openings can be between 100 cm 2 and 500 cm 2 , preferably between 120 cm 2 and 400 cm 2 , more preferably between 140 cm 2 and 300 cm 2 .
  • the connecting lines can be aligned parallel to the longitudinal direction of the carrier profile.
  • the flow of forces is directed along the connection lines, which reduces the load on the connection and increases the rigidity of the hollow profiles.
  • the bending axes are aligned parallel to the longitudinal direction of the carrier profile. The stiffness of the hollow profiles can also be improved by this measure, since the flow of forces runs along the bending axes.
  • the profile sheets can be joined together along the connecting lines to form the hollow profile.
  • the joint connection can be a welded connection, for example.
  • other joining connections e.g. B. an adhesive connection in question.
  • the use of a welded connection leads to very stable and torsion-resistant hollow sections. It has also been shown that the welding distortion caused by the heat effect during welding is extremely small, since each profiled sheet, viewed in cross-section, is welded at two opposite ends to the respective adjacent profiled sheet. A material distortion caused by the welding is thereby almost eliminated.
  • the hollow profile can be composed of two profile sheets.
  • the profile sheets can be subdivided into sections by the bending axes.
  • Outer sections of a profiled sheet metal can be at an angle of between 75° and 105°, preferably between 85° and 95° and more preferably at an angle of essentially 90° to one another.
  • an external profiled sheet section of one of the profiled sheets in the area of the connecting line can assume an angle of between 75° and 105°, preferably between 85° and 95° and more preferably an angle of essentially 90° to an adjacent external profiled sheet section of the other of the profiled sheets .
  • the hollow profile also has a maximum cross-sectional width and a maximum cross-sectional height, with the connecting lines in one of the maximum cross-sectional width and the maximum cross-sectional height formed notional rectangle diagonally opposite.
  • the profile sheets can in particular be L-shaped. It has been shown that the features described above also contribute to the fact that a welding distortion present in the area of the connecting lines is eliminated as completely as possible, so that the finished hollow profile is as distortion-free as possible.
  • one of the profile sheets can have a partial section defined by a bending axis, which forms an underside of the carrier profile and whose width is smaller than a maximum cross-sectional width of the hollow profile. This can be achieved in particular by a suitable selection of the bending axes and bending angles, so that the cross section of the hollow profile increases starting from the underside towards the top. Since the installation space is often tight, particularly in the lower region of the carrier profile, the installation space available further up can be better utilized and the stability of the carrier profile can be increased by means of the cross-section expansion mentioned.
  • the hollow profile can have a cross-sectional width that is between 10 cm and 45 cm and preferably between 10 cm and 16 cm.
  • a cross-sectional height of the hollow profile can be in the range between 20 and 90 cm, preferably between 20 cm and 32 cm.
  • the profiled sheet viewed in cross-section, comprises an overhang projecting beyond the connecting line, the extension of which is preferably between 0.5 cm and 5 cm, more preferably between 1 cm and 3 cm.
  • the overhang simplifies the production of the hollow profile, in particular when using a welded connection, and one that is continuous over the longitudinal extent secure connection guaranteed.
  • the guidance of the welding torch is made easier and the weld seam can easily be implemented as a fillet or HY seam, for example.
  • force application points e.g. through the articulation of struts
  • the subject matter of the invention is also a framework for supporting a concrete placing boom, with a carrier profile which has at least one force absorption area for absorbing a force flow exerted by the concrete placing boom and a force dissipation area, spaced apart from the force absorption area in the longitudinal direction, for dissipating the force flow into a subsoil.
  • the carrier profile comprises a tab that protrudes upwards for the absorption and transmission of at least part of the force flow.
  • two spaced apart force absorbing areas in the longitudinal direction of the support profile can be provided for absorbing a force flow exerted by the concrete placing boom, wherein the tab can be arranged in one of the force absorbing areas that is at the rear with respect to the longitudinal direction.
  • a mast bracket for mounting the concrete placing boom can usually be placed on the carrier profile.
  • the second force receiving area is longitudinally spaced from the first force receiving area.
  • the distance can, for example, correspond to a length that is between 10% and 90%, preferably between 25% and 75% of the longitudinal extension of the carrier profile.
  • the tab may extend longitudinally over a length ranging between 3% and 50%, preferably between 5% and 30% of the longitudinal extent of the carrier profile.
  • the framework can in particular have a mast block which is connected to the bracket by means of a connecting strut, the connection preferably being made by means of a bolt connection.
  • the tab can also have an upper edge whose orientation corresponds to an orientation of the connecting strut with an angular deviation of less than 15°, preferably less than 10°, more preferably less than 5°.
  • a maximum extent of the tab along a vertical axis can be in a range between 3 cm and 50 cm, preferably in a range between 5 cm and 45 cm and more preferably in a range between 10 cm and 35 cm.
  • the extent along the vertical axis can decrease in the direction of the rear end of the carrier profile.
  • the tab can be formed by a sheet metal part, which is preferably aligned parallel or essentially parallel to the longitudinal direction of the carrier profile.
  • the tab can also be designed as an integral part of the carrier profile.
  • the carrier profile comprises at least two profiled sheets, each of which is bent along at least one bending axis and assembled along at least two connecting lines to form a hollow profile, with the tab being designed as an integral part of one of the profiled sheets.
  • the present invention is also a concrete pump, comprising a frame according to the invention, a associated concrete placing boom as well as a pumping device designed for spreading concrete.
  • the arrangement can be further developed by further features described above in connection with the frame structure according to the invention.
  • the pumping device is preferably mounted on the frame according to the invention.
  • the concrete pump can be a stationary or a mobile concrete pump.
  • the frame can be designed to be connected to the chassis of a truck.
  • the subject matter of the present invention is also a method for producing a carrier profile with the following steps:
  • the method can be enhanced by further features described above in connection with the frame structure according to the invention be trained.
  • the profile sheets can be connected by means of a joining method, in particular by welding.
  • Figure 1 shows a three-dimensional side view of a frame according to the invention
  • FIG. 2 shows a three-dimensional side view of a carrier profile used in the embodiment in FIG.
  • Figure 3 shows a cross-sectional view of the carrier profile of Figure 2
  • FIG. 4 shows a three-dimensional side view of a further embodiment of a framework according to the invention.
  • FIG. 5 shows a three-dimensional side view of a carrier profile used in the embodiment of FIG.
  • FIG. 1 shows a three-dimensional side view of a frame 100 according to the invention.
  • the framework 100 comprises two support profiles 13 running along its longitudinal direction and aligned parallel to one another, as well as a mast bracket 14 connected to the support profiles 13 .
  • a concrete placing boom can be connected to the boom block 14 in a manner known in principle, with the aid of a rotatable bearing.
  • Also connected to the mast trestle 14 are support leg boxes 11 in which extendable and retractable support legs 12 are mounted. In the present case, the support leg boxes 11 also rest on the carrier profiles 13 .
  • the mast bracket 14 is connected on the one hand to the first connection areas 16 positioned at the front ends of the carrier profiles 13 .
  • the mast bracket 14 is connected via connecting struts 15 designed as corner profiles to second connecting regions 17 spaced apart in the longitudinal direction of the carrier profiles 13 .
  • the two connecting areas 16 , 17 represent force absorbing areas within the meaning of the present invention.
  • a force dissipation area 18 is located at the rear end of the carrier profiles 13 (on the right in FIG. 1).
  • the support profiles 13 are connected to a support system that includes a cross member 19b and two legs 19a.
  • the two force absorbing areas 16 , 17 are spaced from the force dissipation area 18 in the longitudinal direction of the profiled beam 13 , so that a force flow introduced via the force absorbing areas 16 , 17 is conducted in the longitudinal direction of the profiled beam 13 to the force dissipating area 18 arranged at the rear end.
  • the flow of forces is illustrated by the arrows 10 .
  • Crossbars 9 are also connected to the carrier profiles 13 .
  • the connection between the crossbars 9 and the carrier profiles 13 is made by means of in Figure 1 not recognizable fnache present in the carrier profiles 13 Befest Trentsöf.
  • FIG. 2 shows a three-dimensional side view of a section of a carrier profile 13 used in the embodiment of FIG.
  • FIG. 3 shows a cross-sectional view of this carrier profile 13 .
  • the carrier profile 13 comprises two profiled sheets 20, 21 which are combined to form a hollow profile by being welded to one another along two connecting lines 22, 23. This creates a hollow profile with a cross-sectional width 24 of about 14 cm and a cross-sectional height 25 of about 28 cm.
  • the profile sheet 21 has overhangs of about 2 cm that protrude beyond the connecting lines 22 , 23 , which do not correspond to the cross-sectional width 24 or Section height 25 are added.
  • the profile sheet 20 is bent about a bending axis 27 by about 90°, so that the profile sheet 20 has two partial sections 20a, 20b separated from one another by the bending axis 27 and standing at a 90° angle to one another.
  • the profile sheet 21 is bent about two bending axes 26 , 31 by approximately 45° each, so that it has three partial sections 21 a , 21 b and 21 c separated from one another by the bending axes 26 , 31 .
  • Sections 21a and 21c of profile sheet 21 located at the edge and sections 20a and 20b of profile sheet 20 are at an angle of approximately 90° to one another.
  • the connecting lines 22 , 23 lie diagonally opposite one another in an imaginary rectangle formed by the cross-sectional width 24 and the cross-sectional height 25 .
  • the partial section 21c of the profile sheet 21 which forms an underside of the carrier profile 13 , has a width that is less than the maximum cross-sectional width 24 of the carrier profile 13 .
  • the selection of the bending axes 26 , 31 increases the cross section of the carrier profile from the underside in the direction of the upper side until it reaches the entire maximum cross-sectional width 24 at the level of the bending axis 26 .
  • This enlargement of the cross section means that the available space in the upper area of the carrier profile, which is often less tightly dimensioned, can be better utilized and the stability of the carrier profile 13 can thus be increased.
  • the inclined section 21b which is angled at about 45° to the sections 21a and 21c, also creates a harmonious flow of forces with regard to the cross-sectional values ( moment of inertia , bending, torsion and shear flow ) compared to other types of recesses (such as a recess angled at 90°). allows the greatest possible utilization of the installation space.
  • FIG. 2 also shows fastening openings 29 arranged in the profile sheet 21 and access openings 28 arranged adjacent to the fastening openings 29 .
  • Add-on parts such as the crossbars 9 shown in FIG. 1, can be used in the fastening openings, which are missing in FIG. 2 for the sake of clarity. Because of the fastening openings 29, no effort is required to produce a welded connection between an add-on part and the carrier profile. With the fastening openings, add-on parts can be easily screwed to the carrier profile 13 and, if necessary, removed again or moved.
  • FIG. 4 shows a three-dimensional side view of a further embodiment of a frame 100 according to the invention.
  • FIG. 5 shows a three-dimensional side view of the carrier profiles 13 used in the embodiment in FIG.
  • Such elements which are identical or similar in the embodiment of FIGS. 1 to 3, are provided with the same reference symbols in FIGS.
  • FIG. 4 also shows a concrete feed container 36 , a concrete line 35 connected thereto and mast support blocks 37 , 38 arranged on the frame 100 .
  • FIGS. 4 and 5 differs in particular with regard to the connecting struts 15 and their connection to the carrier profiles 13 in the force introduction area 17 .
  • the connecting struts 15 are designed as round struts, which are connected to the carrier profile 13 via a bolt connection.
  • the profiled sheet metal 21 has a projection of about 20 cm above the cross-sectional height of the carrier profile 13 Tab 40 which is provided with a through hole 41 for producing the bolt connection.
  • the bracket 40 is an integral part of the profile sheet 21 , so that a force flow introduced via the connecting struts 15 is introduced directly into the profile sheet 21 and thus into the carrier profile 13 .
  • the lug 40 has an upper edge 42 whose orientation corresponds approximately to an orientation of the connecting struts 15, with an angular deviation of the orientations preferably being less than 5°.
  • the extent of the tab 40 along a vertical axis is correspondingly greatest in the area of the bolt connection and decreases in the direction of the rear end of the profiled carrier 13 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

La présente invention concerne une structure pour transporter un mât de distribution de béton, la structure comprenant un profilé de support (13) qui comporte : au moins une zone d'absorption de force (16, 17), pour absorber un flux de force exercé par le mât de distribution de béton ; et une région de dissipation de force (18), qui est espacée dans la direction longitudinale du profilé de support (13), pour dissiper le flux de force dans le sol. Le profilé de support (13) comprend au moins deux tôles profilées (20, 21) qui sont chacune repliées le long d'au moins un axe de pliage (26, 27, 31) et qui sont assemblées le long d'au moins deux lignes de liaison (22, 23) pour former un profilé creux. Le profilé de support formé par les feuilles profilées repliées est simple à produire et flexible en utilisation.
EP21815489.6A 2020-12-17 2021-11-19 Structure pour transporter un mât de distribution de béton Pending EP4263978A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020134012.5A DE102020134012A1 (de) 2020-12-17 2020-12-17 Rahmengestell zum Tragen eines Betonverteilermasts
PCT/EP2021/082259 WO2022128327A1 (fr) 2020-12-17 2021-11-19 Structure pour transporter un mât de distribution de béton

Publications (1)

Publication Number Publication Date
EP4263978A1 true EP4263978A1 (fr) 2023-10-25

Family

ID=78806523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21815489.6A Pending EP4263978A1 (fr) 2020-12-17 2021-11-19 Structure pour transporter un mât de distribution de béton

Country Status (6)

Country Link
US (1) US20240052651A1 (fr)
EP (1) EP4263978A1 (fr)
JP (1) JP2023554387A (fr)
KR (1) KR20230116060A (fr)
DE (1) DE102020134012A1 (fr)
WO (1) WO2022128327A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE399361A (fr) * 1933-10-30
DE3101893A1 (de) 1981-01-22 1982-08-05 Elba Maschinenfabrik Kaiser GmbH & Co, 6670 St Ingbert Verfahren zum aufbau von fahrzeugaufbauten auf fahrzeugrahmen unterschiedlicher breite
FI20010988A (fi) * 2001-05-11 2002-11-12 Simo-Pekka Sainio Perävaunun runko
DE102007060526A1 (de) * 2007-12-13 2009-06-18 Putzmeister Concrete Pumps Gmbh Aufbaurahmen für fahrbare Betonpumpen
CN103192882B (zh) 2013-04-10 2016-01-13 徐州徐工施维英机械有限公司 框架式车架结构及混凝土泵车
NL1040560C2 (en) * 2013-12-20 2015-06-30 Multitooltrac B V Dynamically variable track width and electrically driven work in sight tractor and method of steering.
DE102014211999A1 (de) 2014-06-23 2015-12-24 Putzmeister Engineering Gmbh Fahrmischerpumpe mit längenverstellbarem Aufbaurahmen
DE102014225753A1 (de) 2014-12-12 2016-06-16 Franz Xaver Meiller Fahrzeug- Und Maschinenfabrik - Gmbh & Co Kg Verwindungssteifer und montagefreundlicher Montagerahmen für ein Lastentransportfahrzeug
EP3369876A1 (fr) 2017-03-02 2018-09-05 Putzmeister Engineering GmbH Structure porteuse comprenant une cuve intégrée pour une pompe à béton mobile et pompe à béton mobile
JP6816698B2 (ja) * 2017-10-16 2021-01-20 トヨタ自動車株式会社 サイドレールおよびサイドレールの製造方法

Also Published As

Publication number Publication date
WO2022128327A1 (fr) 2022-06-23
JP2023554387A (ja) 2023-12-27
DE102020134012A1 (de) 2022-06-23
KR20230116060A (ko) 2023-08-03
US20240052651A1 (en) 2024-02-15

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