EP3135814A1 - Dispositif de chargement pour finisseuse - Google Patents

Dispositif de chargement pour finisseuse Download PDF

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Publication number
EP3135814A1
EP3135814A1 EP16180327.5A EP16180327A EP3135814A1 EP 3135814 A1 EP3135814 A1 EP 3135814A1 EP 16180327 A EP16180327 A EP 16180327A EP 3135814 A1 EP3135814 A1 EP 3135814A1
Authority
EP
European Patent Office
Prior art keywords
paver
metering
screw
screed
base frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16180327.5A
Other languages
German (de)
English (en)
Inventor
Bernhard ZINGG
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.)
WALO BERTSCHINGER AG
Original Assignee
WALO BERTSCHINGER AG
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 WALO BERTSCHINGER AG filed Critical WALO BERTSCHINGER AG
Priority to EP16180327.5A priority Critical patent/EP3135814A1/fr
Publication of EP3135814A1 publication Critical patent/EP3135814A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
    • E01C19/185—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect for both depositing and spreading-out or striking-off the deposited mixture

Definitions

  • the present invention relates to a feeder for a paver for installing a ceiling of a flowable material, in particular concrete, on a substrate, and a paver equipped therewith.
  • Pavers are used in the prior art for a variety of construction measures.
  • An important class of pavers are so-called slipform pavers, which are suitable for the installation of even slabs or profiles, e.g. Decking or gutters, designed from a flowable material such as concrete.
  • Slipform pavers find particular application for the production of concrete ceilings and profiles for roads, highways, paths, runways, runways or parking areas, but also in track construction.
  • Known slipform pavers have a base frame, which is connected to chassis.
  • the base frame carries a drive and a control station. If a flat ceiling is to be installed, the base frame also carries the so-called screed. During operation, the material is passed under the screed and thereby compacted by it and drawn off to the correct installation thickness.
  • the paver carries a sliding mold instead of a flat screed in order to form the material to be incorporated into a profile.
  • such a slip mold is also referred to as a concrete trough.
  • the material to be installed is presented in the simplest case directly from trucks in front of the screed or sliding mold and manually distributed laterally over the working width.
  • the feeder can only be loaded from the side.
  • a so-called side feeder is known for this purpose under the product name ISF 850.
  • the machine passes over the reinforcement in front of a slipform paver while it is fed with material on the side and distributes the material across the working width.
  • a conveyor belt first directs the material to the center of the work area. From there, the material is distributed symmetrically to both sides by means of a distribution screw.
  • ultra-high-strength concrete In recent years, concrete types have become known which achieve extremely high compressive strengths. These types of concrete are also referred to as ultra-high-strength concrete or in the English language as Ultra-High Performance Concrete (UHPC). They are characterized by a complex composition, including a significant content of fibers, e.g. Steel fibers, out. Due to the high strength of these types of concrete is often sufficient a very low installation thickness. Because of the high material costs for ultra-high-strength concrete, it is desirable to control the installation thickness very accurately. This requires a very precise and homogeneous lateral distribution of the concrete before the screed. At the same time, a very rapid distribution of the concrete is required, since such concrete types begin to harden quickly in some cases. With conventional measures, however, the required homogeneity in the lateral distribution of the concrete can not be achieved.
  • UHPC Ultra-High Performance Concrete
  • a feeding device for a paver for the installation of coverings made of a flowable material, in particular concrete is specified.
  • This has a distribution screw for the lateral distribution of the material along a transverse direction, wherein the transverse direction extends transversely to the working direction of the charging device.
  • the distribution screw defines a screw axis that runs along the transverse direction.
  • the screw preferably extends over the entire working width of the paver.
  • the charging device has a metering housing in which the distribution screw is received.
  • the metering housing has distributed along the screw axis, preferably at equal intervals, a plurality of discharge openings.
  • the charging device has controllable metering closures (also referred to below as metering flaps) in order to selectively close or open selected discharge openings.
  • This arrangement makes it possible to selectively discharge material from the metering housing at different locations along the screw axis and thus to achieve a desired material distribution over the working width.
  • a particularly homogeneous material distribution over the working width can be achieved, if e.g. level concrete slabs of uniform thickness to be installed by means of a screed.
  • the proposed charging device is of great advantage.
  • the charging device also has a filling chute for filling the material.
  • the filling chute is preferably arranged with respect to the screw axis in extension of the metering housing, and the distribution screw extends into a near-bottom region of the filling chute.
  • the distribution screw thereby absorbs the material to be distributed at the bottom of the filling chute and promotes it from there directly into the dosing housing. In this way, conveyor belts or feed screws, as they are known from the prior art omitted. At the same time a particularly fast distribution of the material is made possible.
  • the filling chute can in particular be funnel-shaped and also be referred to as a screw funnel. It is preferably located in a lateral edge area of the feeder to allow lateral loading.
  • the distribution screw preferably extends completely through the bottom area of the filling chute, i. over the entire width of the filling chute.
  • the metering housing is substantially tubular.
  • the discharge openings are then formed in the jacket wall of the tubular metering housing.
  • the jacket wall is essentially circular-cylindrical at least on the inside.
  • Each metering closure comprises a slide which forms at least on the inside a cylinder wall segment, i. a extending over a partial circumference portion of the wall of a circular cylinder.
  • the cylinder wall segment defines a cylinder axis that coincides with the screw axis.
  • the slide is pivotable relative to the metering housing about the screw axis.
  • the cylinder wall segment covers in a closed position at least one associated discharge opening and can be brought by a pivoting movement of the slider about the screw axis in an open position in which the slide at least partially releases the associated discharge opening.
  • each metering closure may comprise a hydraulic actuator which is hingedly connected to the slider to pivot the slider between the closed position and the open position.
  • the loading device is advantageously designed to be connected to the base frame of a paver.
  • the charging device can at least one, preferably have two connecting arms for connecting the feeder to the base frame of the paver.
  • the loading device may comprise rollers, wherein the rollers are preferably mounted outside the working width. The rollers need not be driven, since the loading device is usually pushed in operation by the paver along the working direction in front of him.
  • the present invention also provides a paver for the installation of coverings of a flowable material, in particular concrete, which has a loading device of the type mentioned above.
  • the paver comprises a base frame (also referred to as a bridge) and two, preferably four chassis connected to the base frame and a screed connected to the base frame for removing the material presented in front of the screed or a sliding mold connected to the base frame.
  • the trolleys are preferably driven, so that the paver is self-propelled.
  • the base frame is variable in height connected to the chassis, as is well known.
  • the trolleys are preferably individually steerable. They are preferably connected via support arms to the base frame, wherein the support arms may be pivotally mounted about a vertical axis on the base frame in order to position the trolleys with respect to the transverse direction relative to the base frame as needed.
  • the paver usually includes a control station. This is preferably equipped with controls for targeted opening and closing of Dosierver until.
  • the controls include in the simplest case a plurality of levers or other actuators, with which the position of each dosing is changed individually.
  • the paver has a controller for the feeder and sensors that continuously detect the amount of material being presented in front of the screed or slip mold. The controller then receives the signals from the sensors and automatically changes the degree of opening of the dosing caps so that always the desired amount of material is presented.
  • the screed or slip mold may be coated on its surface with a friction-reducing plastic, in particular polytetrafluoroethylene (PTFE, also known under the brand name Teflon TM).
  • PTFE polytetrafluoroethylene
  • the paver may also have at least one vibrator to compact the material placed in front of the screed or slip mold and to improve the fluidity of the material.
  • the paver may, in some embodiments, be configured such that the work area is transverse to the landing gear with respect to the transverse direction.
  • This is also known as inset manufacturing.
  • This configuration is particularly suitable for the installation of relatively wide ceilings, e.g. for roads, highways, runways, runways, etc.
  • the work area is outside the landing gear with respect to the transverse direction.
  • This is also referred to as offset production or side production.
  • the side production is suitable e.g. for the production of narrow ways or profiles on the roadside.
  • the screed or the sliding mold is arranged laterally outside the chassis.
  • the dosing housing and the worm received therein extend laterally into a receiving area located outside the trolleys with respect to the transverse direction, and if at least one of the controllable dosing closures is arranged in the original area.
  • the filling chute can then be located on the opposite side outside or inside the area between the chassis.
  • FIG. 1-3 is a first embodiment of a paver for producing a ceiling of a flowable material such as concrete illustrated.
  • the paver has a base frame 10 which carries a drive unit 11 and an operator 12.
  • the base frame 10 is connected via pivotable support arms 22 with four hydraulically driven crawler tracks 11, which are individually steerable and individually height adjustable by means of lifting devices 23.
  • the paver moves by means of the crawler tracks 11 along a working direction A.
  • a screed 14 (see FIG. 3 ).
  • the screed 14 is facing down with a layer of polytetrafluoroethylene (PTFE, available from DuPont under the trade name Teflon TM). occupied, so that the actual working surface of the screed made of PTFE.
  • Baffles 15 of a slip formwork limit the width of the template area in front of the screed 14. As a result, define the baffles 15 at the same time the working width B with respect to the transverse direction T (see FIG. 2 ).
  • the paver is thus configured as a slipform paver, wherein the working area with respect to the transverse direction T is within the range between the crawler tracks 11.
  • Such a configuration is also referred to as an inset paver.
  • the working width B can vary within a wide range and depending on the application, for example between 1 meter and more than 15 meters. In the present example, it is about 5 meters.
  • the paver is provided with a loading device 30.
  • This has a funnel-shaped filling chute 31 in a region located laterally outside the working width.
  • a screw 32 (see FIG. 2 ) is arranged in the bottom region of the filling chute 31 and extends from there into a tubular metering housing 33.
  • the metering housing 33 extends over the entire working width B.
  • the screw 32 defines a screw axis S. It extends over the entire width of the filling chute 31 and the metering housing 33 away.
  • the worm 32 is driven by a worm drive 34 to rotate.
  • the loading device 30 is connected by means of connecting arms 36 with the base frame 10 of the paver and is pushed by means of rollers 35 by the paver in front of the base frame 10.
  • the connecting arms 36 are each pivotable about a horizontal axis relative to the base frame 10.
  • the tubular metering housing 33 has in its mantle wall a plurality of obliquely downwardly and rearwardly directed discharge openings, which are distributed uniformly along the screw axis S over the working width B. In the present example, nine such openings are present.
  • Each discharge opening is closed by a metering 40.
  • each metering closure 40 has a slider 41 which comprises a cylinder wall segment.
  • the cylinder axis of the cylinder wall segment coincides with the screw axis S.
  • the slider 41 is by means of a hydraulic actuator 42 to the screw axis S. pivotable between a closed position and an open position. In the closed position, the slide covers the associated discharge opening. In the open position, the slide releases the discharge opening.
  • the slider 41 comprises on both sides of the cylinder wall segment in each case a lateral guide ring 45, with which the slider 41 is pivotally guided on the tubular metering housing 33.
  • the guide rings 45 are connected to each other by means of a cross bar 43.
  • the actuator 42 is designed as a hydraulic cylinder with a displaceable piston rod 48.
  • the movable part of the actuator acts via a joint 44 on the transverse rod 43 in order to pivot the guide rings 45 together with the cylinder wall segment of the slider 41 about the worm axis S.
  • the fixed part of the actuator (the hydraulic cylinder) is in turn pivotally mounted on a hinge 46 on a crossbar 47 of the feeder 30.
  • the material is filled as required with dumper into the filling chute 31.
  • the distribution screw 32 conveys the material from there directly into the metering housing 33, so that the material reaches the area of the discharge openings.
  • the opening degree of the metering shutters 40 is continuously changed depending on the amount of the required material.
  • Serve controls on an operator panel 16 of the paver see FIG. 1 .
  • the material is applied in the respectively required quantity and presented in the original area 51.
  • the paver moves forward along the working direction A.
  • the material passes under the screed 14.
  • the vibrators 13 the material is compacted.
  • the vibrators improve the fluidity of the material, so the material becomes more "liquid” due to the introduced energy.
  • the screed 14 the material is deducted in this flowable state to the desired installation thickness D.
  • the loading device 30 is particularly well suited to apply the material to a previously laid on the substrate reinforcement.
  • the installation thickness D can be controlled by measures known per se, so that exactly the desired installation thickness results parallel to the ground.
  • measures known per se e.g. conventional guide wires are used to control the installation thickness.
  • an electronic thickness control can be used.
  • a suitable system is e.g. by Leica Geosystems AG, Heerbrugg, Switzerland under the name PaveSmart TM 3D. With this control, the screed is guided along a 3D terrain model and the material is installed exactly according to the model.
  • the paver is configured as a page finisher (offset paver). Identical or equivalent parts are provided with the same reference numerals as in the first embodiment.
  • the screed is here part of a laterally outside of the chassis 21 arranged Gleitform (side mold) 17, which defines a working width B '.
  • This configuration is particularly well suited, for example, for producing ceilings or profiles close to an edge termination.
  • the distribution screw 32 and the dosing housing 33 extend laterally beyond the trolleys into a submission area 51 'located outside the trolleys.
  • the two outermost dosing closures 40 are arranged in the original area 51 'in front of the slip mold 17. During operation, only these metering closures are opened while the remaining metering closures remain closed.
  • FIGS. 9 and 10 the operation of the metering closures 40 is illustrated in more detail.
  • the dosing lock 40 in question in its open position.
  • the piston rod 48 of the actuator 42 is fully retracted into the actuator.
  • the slider 41 thus releases a discharge opening 37 in the metering housing 33, so that material is discharged along a discharge direction 49 through the discharge opening 37 into the supply area 51 '.
  • the invention has been explained by way of examples. However, the invention is not limited to these examples, and it is understood that a variety of modifications are possible within the scope of the invention.
  • wheels can be used instead of crawler tracks.
  • the metering closures can also be designed differently than in the manner described above, for example as flaps, which are pivotable about an axis in the region of the outside of the metering housing.
  • the paver can be supplemented by other components, for example by paddles or panels for further distribution in the template area in front of the screed or before the sliding mold, or by wipers to change the surface structure behind the screed.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP16180327.5A 2016-07-20 2016-07-20 Dispositif de chargement pour finisseuse Withdrawn EP3135814A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16180327.5A EP3135814A1 (fr) 2016-07-20 2016-07-20 Dispositif de chargement pour finisseuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16180327.5A EP3135814A1 (fr) 2016-07-20 2016-07-20 Dispositif de chargement pour finisseuse

Publications (1)

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EP3135814A1 true EP3135814A1 (fr) 2017-03-01

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EP16180327.5A Withdrawn EP3135814A1 (fr) 2016-07-20 2016-07-20 Dispositif de chargement pour finisseuse

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823917A1 (de) 1988-07-14 1990-01-18 Berger Bau Gmbh Fertiger fuer grosse arbeitsbreiten und hohe einbauleistungen fuer den asphalt- und betonstrassenbau
DE202011100818U1 (de) * 2011-05-17 2011-09-26 Bilfinger Berger Ingenieurbau Gmbh Fertiger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823917A1 (de) 1988-07-14 1990-01-18 Berger Bau Gmbh Fertiger fuer grosse arbeitsbreiten und hohe einbauleistungen fuer den asphalt- und betonstrassenbau
DE202011100818U1 (de) * 2011-05-17 2011-09-26 Bilfinger Berger Ingenieurbau Gmbh Fertiger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WIRTGEN GROUP: "Seitenbeschicker ISF 850", 1 July 2014 (2014-07-01), XP002765408, Retrieved from the Internet <URL:http://media.wirtgen-group.com/media/02_wirtgen/media_1/media_1_05_slipform_pavers_2/media_1_05_slipform_pavers_2_isf/media_1_05_slipform_pavers_2_isf_brochures/media_1_05_slipform_pavers_2_isf_brochures_de/BR_ISF850_DE.pdf> [retrieved on 20161221] *

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