EP2216444B1 - Construction machine for distributing spreading material on soil - Google Patents

Construction machine for distributing spreading material on soil Download PDF

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Publication number
EP2216444B1
EP2216444B1 EP10000331.8A EP10000331A EP2216444B1 EP 2216444 B1 EP2216444 B1 EP 2216444B1 EP 10000331 A EP10000331 A EP 10000331A EP 2216444 B1 EP2216444 B1 EP 2216444B1
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EP
European Patent Office
Prior art keywords
construction machine
dust protection
dust
spreading
protection elements
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EP10000331.8A
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German (de)
French (fr)
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EP2216444A2 (en
EP2216444A3 (en
Inventor
Christoph Menzenbach
Heiko Böhme
Cyrus Barimani
Günter HÄHN
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Wirtgen GmbH
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Wirtgen GmbH
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Publication of EP2216444A3 publication Critical patent/EP2216444A3/en
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    • 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
    • E01C19/02—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 preparing the materials
    • E01C19/025—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 preparing the materials for preparing hydraulic-cement-bound mixtures of which at least one ingredient has previously been deposited on the surface, e.g. in situ mixing of concrete
    • 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
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C19/201—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders with driven loosening, discharging or spreading parts, e.g. power-driven, drive derived from road-wheels
    • 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
    • E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/50—Methods or devices for preventing dust by spraying or sucking

Definitions

  • the invention relates to a construction machine for spreading material to be spread on soils, in particular a construction machine for spreading binders for soil stabilization.
  • the invention relates both to a construction machine, which is intended exclusively for application of the binder, as well as to a construction machine, in particular a stabilizer or recycler, which has a milling or mixing rotor, with which the binder immediately after deployment in the milled soil can be mixed.
  • binders into the soil to improve its incorporation and bearing capacity.
  • Typical applications for soil stabilization are the construction of roads, railways and industrial areas.
  • the known stabilizer or recycler have a reservoir for a dry binder, such as lime or cement, and a spreader for spreading the binder on the ground and a milling or mixing rotor, with the ground milled and the binder immediately after spreading in the Soil can be mixed in.
  • a pulverulent binder is mixed into the soil.
  • recyclers or stabilizers and construction machines are known with which the binder applied only to the ground, but can not be mixed into the soil. These construction machines are also referred to as binder spreaders.
  • the known binder spreader have a collecting container and a spreader for spreading the binder on the ground.
  • Self-propelled or non-self-propelled binder spreaders are known.
  • the non-self-propelled binder spreaders are attached to a towing vehicle, in particular to a tractor, or by the tractor towed.
  • the self-propelled stabilizers have a frame supported by a wheeled chassis and a drive unit for the wheels.
  • the known construction machines have a dust protection device in the form of an outlet of the spreader enclosing from all sides apron.
  • the US-A-4,990,025 describes a stabilizer for attachment to a tractor.
  • the known stabilizer has a milling and mixing rotor, which is arranged in a rotor housing, which comprises a spraying device for spraying a liquid binder.
  • the problem of dusting can not arise in a stabilizer with a spray because the milled material in the rotor housing is sprayed with a liquid binder.
  • a stabilizer or recycler which has an integrated device for spreading powdered binders is known from US 5,156,237 EP 1 012 396 B1 known.
  • the binder is provided in a funnel-shaped reservoir, at the lower end of a rotary valve is arranged with which the binder can be dispensed dosed.
  • Below the rotary valve flexible sealing walls, for example, rubber flaps are provided which enclose a at the rear in the direction of travel scattering space in which the binder is stored.
  • the binder is run over by the milling or mixing rotor of the stabilizer or recycler and mixed with the milled soil.
  • the invention is based on the object to provide a construction machine for spreading of grit on soils, in particular a construction machine for spreading binders for soil stabilization, in which the formation of dust during application of the powdered binder is largely prevented.
  • the construction machine according to the invention has a grit container for receiving the grit and a spreader with one or more outlet openings for discharging the grit. Below the one or more outlet openings of the scattering device, the dust protection device of the construction machine according to the invention is arranged.
  • the dust protection device is characterized in that below the one or more outlet openings of the spreader a spreader space is created, which is bounded by one or more first dust protection elements, and that a dust enclosure enclosing the spreader room is created, which is bounded by one or more second dust protection elements , wherein at least the dust protection space limiting the second dust protection elements are designed to be flexible so that they can strip over the ground. It is thereby achieved that dust accumulating during spreading of the grit is first retained in the scattering space enclosed by the first dust protection elements, so that the dust can settle on the floor. This already holds back a larger part of the dust. The dust not retained in the spreader room is captured in the dust shelter which is enclosed by the second dust protection elements. This effectively prevents accumulating dust in the environment when spreading the grit.
  • both the first and second dust protection elements are flexible dust protection elements that can strip over the floor. But it is also possible that only the second dust protection elements that limit the dust protection space, reach to the bottom, since ultimately only the Dust protection room needs to be completed to the outside.
  • the dust protection device preferably comprises a plurality of first and second dust protection elements, which limit the scattering space or dust protection space. But it is also possible to provide only a single first and second dust protection element, which surrounds the scattering space or dust protection space in the manner of a circumferential skirt. Preferably, the circumferential skirt is but divided into several sections.
  • a preferred embodiment of the invention provides that the dust protection device has a suction device connected to the dust protection space for extracting dust from the dust protection space.
  • the suction device preferably has a collecting container in which the dust is collected.
  • the collected in the sump dust is preferably returned to the grit container. This is particularly effective prevents dust from entering the dust protection room in the environment.
  • the dust protection device has a spraying device, which is in communication with the dust protection space, for spraying the dust protection space with a liquid, with which the resulting dust can be bound or deposited.
  • the spraying device preferably has a line arranged in the dust protection space with spray nozzles, preferably a ring line in order to spray the liquid as evenly as possible.
  • Additives can be added to the liquid, which promote the binding of the dust; in particular, foaming agents can be added, as a result of which the dust protection space can be at least partially flooded with a foam.
  • the dust protection device it is also possible in principle for the dust protection device to have both a suction device and a spray device. In practice, however, it is sufficient if either a suction device or a spray device is provided.
  • the dust-proofing room is preferably a space enclosing the spreader room except the top and bottom. In practice, however, it may be sufficient if the dust protection room does not completely surround the spreader room. For example, in the region of the longitudinal sides of the spreader room, less dust may possibly occur, so that the dust protection room can be open there.
  • the dust protection elements enclosing the scattering space and the dust protection space are preferably elements designed in the manner of an apron, wherein at least the dust protection elements enclosing the dust protection space at least partially consist of a flexible material, so that the dust protection elements can rest on the ground and strip over the ground. As a result, uneven floors can be compensated.
  • the dust protection elements preferably consist entirely of flexible material. But it is also possible that they include a rigid dust cover on which strips of flexible material are attached.
  • the construction machine is preferably a non-self-propelled construction machine, in particular a non-self-propelled construction machine for spreading binders for soil stabilization, which is attached to a towing vehicle, in particular to a tractor or towed by a towing vehicle or is built on a towing vehicle.
  • the construction machine is a self-propelled construction machine, which has its own drive unit.
  • the construction machine may be a stabilizer or recycler with an integrated binder spreader.
  • FIGS. 1 and 2 show in a highly simplified schematic representation of the essential components of a non-self-propelled construction machine for spreading binders for soil stabilization, which is referred to below as a binder spreader.
  • the binder spreader is attached to an unillustrated towing vehicle, such as a tractor, which tows the binder spreader. On the tractor, the binder spreader can be adjusted in height to the ground.
  • the binder spreader has a substantially rectangular chassis 1 with a forward front wall 1A in the direction of travel, a rear rear wall 1B in the direction of travel and two side walls 1C and 1D.
  • the height-adjustable mounting of the binder spreader on the tractor is done with a hint of attachment 2 shown on the front of the chassis.
  • the binder spreader For receiving the binder, the binder spreader has a closed grit container 3, which has a filling opening 4 at the top. Below the grit container 3 is a scattering device 5, which consists of several self-cleaning metering locks in Zellenradbauweise. The construction of such a scattering unit is known to the person skilled in the art.
  • the spreader 5 has at the bottom of one or more outlet openings 6, where the binder exits and falls to the ground. In order to prevent the resulting dust development, the binder spreader has a dust protection device 7.
  • the dust protection device 7 has in each case on the front and rear walls 1A, 1B and the side walls 1C, 1 D fixed dust protection elements 7A, 7B, 7C, 7D.
  • the dust protection elements 7A, 7B, 7C, 7D are each formed in the manner of a skirt elements made of a flexible material.
  • a flexible dust protection elements for example, rectangular plastic foil pieces, such as rubber cloths or the like, can be used, which are tailored in the dimensions of the chassis. At the lower edges, the pieces of film may be provided with spaced incisions to increase flexibility.
  • the flexible dust control elements are preferably of sufficient length to strike the ground as the binder spreader is moved across the ground by the tractor.
  • the dust protection device 7 also has further flexible dust protection elements 8A, 8B, 8C, 8D, which are arranged at a distance from the first dust protection elements.
  • the second dust protection elements 8A, 8B, 8C, 8D which are like the first dust protection elements 7A, 7B, 7C, 7D each formed in the manner of a skirt, enclose the first dust protection elements on the front and back and the long sides.
  • the second dust guard elements are of sufficient length to strike the ground as the binder spreader is moved across the ground.
  • the space between the front and in the direction of travel of the construction machine Rear and the longitudinal side lateral dust protection elements is referred to as dust protection space 9.
  • a suction device 10 For sucking off the dust from the dust protection space 9, a suction device 10 is provided.
  • the suction device 10 has an annular suction line 11 with a plurality of spaced suction nozzles 12, which extends between the first and second dust protection elements in the upper half of the dust protection space 9.
  • the ring line 11 is connected via a suction line, not shown, with a device 13 for sucking air from the dust protection space 9.
  • the suction device 10 has a collecting container 14, in which the dust extracted from the dust protection space is collected, wherein the exhaust air is blown off via a filter, not shown.
  • An only schematically illustrated device 14A transfers the dust collected in the collecting container 14 into the grit container 3 via a channel 14B, which is shown only as an indication. The collected dust can be blown into the grit container, for example, in the standstill times of the suction device.
  • FIGS. 3 and 4 show an alternative embodiment of the binder spreader, which differs from that with reference to FIGS Figures 1 and 2 described embodiment differs only in that instead of a suction device for the dust, a spraying device is provided.
  • the corresponding parts are therefore provided with the same reference numerals.
  • the spraying device 15 comprises a ring pipe 16, which in turn is arranged in the upper half of the dust-proofing space 9, on which a multiplicity of spraying nozzles 17 arranged at a distance from one another are provided. From the ring line 16 leads a spray medium, not shown, to a Sprühstoff essenceer 18, from which via a pump, not shown, spray is conveyed into the loop 16. The spray binds the in the dust protection space.
  • the spray is preferably admixed with an additive which promotes the binding of the dust.
  • the spray is mixed with a foaming agent, which can be provided in a separate additive container and conveyed into the Sprühffen theoretically. This ensures that forms a foam in the dust shelter, which binds the dust. With the rear dust protection elements in the direction of travel, which limit the dust protection space, the foam can then be pulled smoothly. The foam carpet remaining on the floor binds the dust on the floor until the floor is milled and the binder is mixed into the floor. In order for a dust development can be effectively prevented even if especially in stronger winds, the construction machine for milling the soil relatively late follow the binder spreader.
  • the two embodiments show a cultivation binder spreader, which is attached to a tractor.
  • the dust protection device according to the invention can also be provided in a binder spreader, which is pulled by a truck.
  • the binder spreader may be a self-propelled binder spreader. In particular, it may be a stabilizer or recycler with an integrated binder spreader.
  • Fig. 5 shows in a highly simplified representation of a stabilizer or recycler with an integrated device for spreading binders. Since the recycler or stabilizer, with the exception of the binder spreading apparatus according to the invention, belongs to the state of the art, only the essential components of the construction machine are described.
  • the recycler or stabilizer as such, for example, in the EP 1 012 396 B1 has a height-adjustable machine frame 19 with two front wheels 20 and two rear wheels 21. On the machine frame 19, a control station 22 is arranged with a driver's cab 23. Between the front and rear wheels 19, 20 is located on the machine frame 19, a rotor housing 24 in which a milling or mixing rotor 25 is arranged.
  • the stabilizer or recycler has the device for spreading binder.
  • Fig. 5 become the individual components of the device for spreading of binder with the same reference numerals as the corresponding components of the binder spreader, with reference to the Fig. 1 to 4 is described.
  • the integrated binder spreader has a funnel-shaped grit container 3, in which the binder is provided. Below the grit container, the spreader 5 is arranged for discharging the binder. Below the spreader is the dust guard 7, which as in the binder spreader from the FIGS. 1 to 4 again has first and second dust protection elements 7A, 8A, which define a spreader room 8 and a dust protection space 9.
  • the applied with the device binder is run over immediately after the application of the milling or mixing rotor 25 of the stabilizer or recycler and mixed with the milled soil.
  • the dust protection device 7 all components of the dust protection of the FIGS. 1 to 4 have, even if the individual parts are not shown in FIG. 6.
  • a suction device or a spray device is provided, with reference to the FIGS. 1 to 4 is described in detail.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fertilizing (AREA)
  • Soil Working Implements (AREA)
  • Road Paving Machines (AREA)

Description

Die Erfindung betrifft eine Baumaschine zum Streuen von Streugut auf Böden, insbesondere eine Baumaschine zum Streuen von Bindemitteln für die Bodenstabilisierung. Dabei bezieht sich die Erfindung sowohl auf eine Baumaschine, die ausschließlich zum Ausbringen des Bindemittels bestimmt ist, als auch auf eine Baumaschine, insbesondere einen Stabilisierer oder Recycler, der über einen Fräs- oder Mischrotor verfügt, mit dem das Bindemittel unmittelbar nach dem Ausbringen in den aufgefrästen Boden eingemischt werden kann.The invention relates to a construction machine for spreading material to be spread on soils, in particular a construction machine for spreading binders for soil stabilization. In this case, the invention relates both to a construction machine, which is intended exclusively for application of the binder, as well as to a construction machine, in particular a stabilizer or recycler, which has a milling or mixing rotor, with which the binder immediately after deployment in the milled soil can be mixed.

Zur Verbesserung oder Verfestigung von Böden ist es bekannt, Bindemittel in den Boden einzubringen, um dessen Einbaufähigkeit und Tragfähigkeit zu verbessern. Typische Anwendungsfälle für die Bodenstabilisierung sind der Bau von Straßen, Schienenwegen und Industrieflächen.To improve or consolidate soils, it is known to incorporate binders into the soil to improve its incorporation and bearing capacity. Typical applications for soil stabilization are the construction of roads, railways and industrial areas.

Die bekannten Stabilisierer oder Recycler verfügen über einen Sammelbehälter für ein trockenes Bindemittel, beispielsweise Kalk oder Zement, und ein Streuwerk zum Ausbringen des Bindemittels auf den Boden sowie einen Fräs- oder Mischrotor, mit dem der Boden aufgefräst und das Bindemittel unmittelbar nach dem Ausbringen in den Boden eingemischt werden kann. Dabei wird im Allgemeinen ein pulverförmiges Bindemittel in den Boden eingemischt. Neben den Recyclern oder Stabilisierern sind auch Baumaschinen bekannt, mit denen das Bindemittel nur auf den Boden aufgebracht, nicht aber in den Boden eingemischt werden kann. Diese Baumaschinen werden auch als Bindemittelstreuer bezeichnet.The known stabilizer or recycler have a reservoir for a dry binder, such as lime or cement, and a spreader for spreading the binder on the ground and a milling or mixing rotor, with the ground milled and the binder immediately after spreading in the Soil can be mixed in. In general, a pulverulent binder is mixed into the soil. In addition to the recyclers or stabilizers and construction machines are known with which the binder applied only to the ground, but can not be mixed into the soil. These construction machines are also referred to as binder spreaders.

Die bekannten Bindemittelstreuer verfügen über einen Sammelbehälter und ein Streuwerk zum Ausbringen des Bindemittels auf den Boden. Es sind selbstfahrende oder nicht-selbstfahrende Bindemittelstreuer bekannt. Die nicht-selbstfahrenden Bindemittelstreuer werden an ein Zugfahrzeug, insbesondere an einen Traktor angebaut oder von dem Traktor geschleppt. Die selbstfahrenden Stabilisierer verfügen über einen von einem Fahrwerk mit Rädern getragenen Maschinenrahmen und einer Antriebseinheit für die Räder.The known binder spreader have a collecting container and a spreader for spreading the binder on the ground. Self-propelled or non-self-propelled binder spreaders are known. The non-self-propelled binder spreaders are attached to a towing vehicle, in particular to a tractor, or by the tractor towed. The self-propelled stabilizers have a frame supported by a wheeled chassis and a drive unit for the wheels.

Bei dem Streuen von pulverförmigen Bindemitteln stellt sich das Problem der Staubbildung. Daher verfügen die bekannten Baumaschinen über eine Staubschutzeinrichtung in Form einer den Auslass des Streuwerks von allen Seiten umschließenden Schürze.The scattering of powdered binders raises the problem of dust formation. Therefore, the known construction machines have a dust protection device in the form of an outlet of the spreader enclosing from all sides apron.

In der Praxis hat sich gezeigt, dass die Staubschutzeinrichtung der bekannten Baumaschinen nicht immer ausreichend ist, um die Staubbildung ausreichend zu unterbinden. Insbesondere bei stärkeren Winden kann es trotz der Staubschutzeinrichtung zu Verwehungen des aus dem Auslass des Streuwerks austretenden Bindemittels kommen.In practice, it has been shown that the dust protection device of the known construction machinery is not always sufficient to prevent the formation of dust sufficiently. In spite of the dust protection device, drifts of the binder emerging from the outlet of the spreader may occur, especially with stronger winches.

Die US-A-4 990 025 beschreibt einen Stabilisierer zum Anbau an einen Traktor. Der bekannte Stabilisierer verfügt über einen Fräs- und Mischrotor, der in einem Rotorgehäuse angeordnet ist, das eine Sprüheinrichtung zum Aufsprühen eines flüssigen Bindemittels umfasst. Das Problem der Staubbildung kann sich bei einem Stabilisierer mit einer Sprüheinrichtung nicht stellen, da das aufgefräste Material in dem Rotorgehäuse mit einem flüssigen Bindemittel besprüht wird.The US-A-4,990,025 describes a stabilizer for attachment to a tractor. The known stabilizer has a milling and mixing rotor, which is arranged in a rotor housing, which comprises a spraying device for spraying a liquid binder. The problem of dusting can not arise in a stabilizer with a spray because the milled material in the rotor housing is sprayed with a liquid binder.

Ein Stabilisierer oder Recycler, der über eine integrierte Vorrichtung zum Streuen von pulverförmigen Bindemitteln verfügt, ist aus der EP 1 012 396 B1 bekannt. Das Bindemittel wird in einem trichterförmigen Vorratsbehälter bereitgestellt, an dessen unteren Ende eine Zellenradschleuse angeordnet ist, mit der das Bindemittel dosiert abgegeben werden kann. Unterhalb der Zellenradschleuse sind flexible Abdichtungswände, beispielsweise Gummilappen vorgesehen, die einen an der in Fahrtrichtung hinteren Seite offenen Streuraum umschließen, in dem das Bindemittel abgelegt wird. Unmittelbar nach dem Ausbringen wird das Bindemittel von dem Fräs- oder Mischrotor des Stabilisierers oder Recyclers überfahren und mit dem aufgefrästen Boden vermischt.A stabilizer or recycler which has an integrated device for spreading powdered binders is known from US 5,156,237 EP 1 012 396 B1 known. The binder is provided in a funnel-shaped reservoir, at the lower end of a rotary valve is arranged with which the binder can be dispensed dosed. Below the rotary valve flexible sealing walls, for example, rubber flaps are provided which enclose a at the rear in the direction of travel scattering space in which the binder is stored. Immediately after application, the binder is run over by the milling or mixing rotor of the stabilizer or recycler and mixed with the milled soil.

Der Erfindung liegt die Aufgabe zu Grunde, eine Baumaschine zum Streuen von Streugut auf Böden, insbesondere eine Baumaschine zum Streuen von Bindemitteln für die Bodenstabilisierung zu schaffen, bei der die Bildung von Staub beim Ausbringen des pulverförmigen Bindemittels weitgehend unterbunden wird.The invention is based on the object to provide a construction machine for spreading of grit on soils, in particular a construction machine for spreading binders for soil stabilization, in which the formation of dust during application of the powdered binder is largely prevented.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausführungsformen der Erfindung sind Gegenstand der Unteransprüche.The solution of this object is achieved according to the invention with the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

Die erfindungsgemäße Baumaschine weist einen Streugutbehälter zur Aufnahme des Streuguts und eine Streueinrichtung mit einer oder mehreren Auslassöffnungen zum Ausbringen des Streuguts auf. Unterhalb der einen oder der mehreren Auslassöffnungen der Streueinrichtung ist die Staubschutzeinrichtung der erfindungsgemäßen Baumaschine angeordnet.The construction machine according to the invention has a grit container for receiving the grit and a spreader with one or more outlet openings for discharging the grit. Below the one or more outlet openings of the scattering device, the dust protection device of the construction machine according to the invention is arranged.

Die Staubschutzeinrichtung zeichnet sich dadurch aus, dass unterhalb der einen oder mehreren Auslassöffnungen der Streueinrichtung ein Streuraum geschaffen wird, der von ein oder mehreren ersten Staubschutzelementen begrenzt wird, und dass ein den Streuraum umschließender Staubschutzraum geschaffen wird, der von einen oder mehreren zweiten Staubschutzelementen begrenzt wird, wobei zumindest die den Staubschutzraum begrenzenden zweiten Staubschutzelemente derart flexibel ausgebildet sind, dass sie über den Boden streifen können. Dadurch wird erreicht, dass beim Ausbringen des Streuguts anfallender Staub zunächst in dem von den ersten Staubschutzelementen umschlossenen Streuraum zurückgehalten wird, so dass sich der Staub auf dem Boden absetzen kann. Hiermit wird bereits ein größerer Teil des Staubs zurückgehalten. Der im Streuraum nicht zurückgehaltene Staub wird in dem Staubschutzraum eingefangen, der von den zweiten Staubschutzelementen umschlossen wird. Dadurch wird wirkungsvoll verhindert, dass beim Ausbringen des Streuguts anfallender Staub in die Umgebung gelangen kann.The dust protection device is characterized in that below the one or more outlet openings of the spreader a spreader space is created, which is bounded by one or more first dust protection elements, and that a dust enclosure enclosing the spreader room is created, which is bounded by one or more second dust protection elements , Wherein at least the dust protection space limiting the second dust protection elements are designed to be flexible so that they can strip over the ground. It is thereby achieved that dust accumulating during spreading of the grit is first retained in the scattering space enclosed by the first dust protection elements, so that the dust can settle on the floor. This already holds back a larger part of the dust. The dust not retained in the spreader room is captured in the dust shelter which is enclosed by the second dust protection elements. This effectively prevents accumulating dust in the environment when spreading the grit.

Bei einer bevorzugten Ausführungsform sind sowohl die ersten und zweiten Staubschutzelemente flexible Staubschutzelemente, die über den Boden streifen können. Es ist aber auch möglich, dass nur die zweiten Staubschutzelemente, die den Staubschutzraum begrenzen, bis zu dem Boden reichen, da letztlich nur der Staubschutzraum nach außen abgeschlossen zu sein braucht.In a preferred embodiment, both the first and second dust protection elements are flexible dust protection elements that can strip over the floor. But it is also possible that only the second dust protection elements that limit the dust protection space, reach to the bottom, since ultimately only the Dust protection room needs to be completed to the outside.

Die Staubschutzeinrichtung umfasst vorzugsweise mehrere erste und zweite Staubschutzelemente, die den Streuraum bzw. Staubschutzraum begrenzen. Es ist aber auch möglich, nur ein einziges erstes und zweites Staubschutzelement vorzusehen, das in der Art einer umlaufenden Schürze den Streuraum bzw. Staubschutzraum umschließt. Vorzugsweise ist die umlaufende Schürze aber in mehrere Teilabschnitte untergliedert.The dust protection device preferably comprises a plurality of first and second dust protection elements, which limit the scattering space or dust protection space. But it is also possible to provide only a single first and second dust protection element, which surrounds the scattering space or dust protection space in the manner of a circumferential skirt. Preferably, the circumferential skirt is but divided into several sections.

Eine bevorzugte Ausführungsform der Erfindung sieht vor, dass die Staubschutzeinrichtung eine mit dem Staubschutzraum in Verbindung stehende Absaugeinrichtung zum Absaugen von Staub aus dem Staubschutzraum aufweist. Die Absaugeinrichtung weist vorzugsweise einen Sammelbehälter auf, in dem der Staub gesammelt wird. Der in dem Sammelbehälter gesammelte Staub wird vorzugsweise wieder dem Streugutbehälter zugeführt. Dadurch wird besonders wirkungsvoll verhindert, dass Staub aus dem Staubschutzraum in die Umgebung gelangt.A preferred embodiment of the invention provides that the dust protection device has a suction device connected to the dust protection space for extracting dust from the dust protection space. The suction device preferably has a collecting container in which the dust is collected. The collected in the sump dust is preferably returned to the grit container. This is particularly effective prevents dust from entering the dust protection room in the environment.

Eine weitere bevorzugte Ausführungsform sieht vor, dass die Staubschutzeinrichtung eine mit dem Staubschutzraum in Verbindung stehende Sprüheinrichtung zum Besprühen des Staubschutzraums mit einer Flüssigkeit aufweist, mit der anfallender Staub gebunden oder niedergeschlagen werden kann. Die Sprüheinrichtung weist vorzugsweise eine in dem Staubschutzraum angeordnete Leitung mit Spritzdüsen, vorzugsweise eine Ringleitung auf, um die Flüssigkeit möglichst gleichmäßig zu versprühen.A further preferred embodiment provides that the dust protection device has a spraying device, which is in communication with the dust protection space, for spraying the dust protection space with a liquid, with which the resulting dust can be bound or deposited. The spraying device preferably has a line arranged in the dust protection space with spray nozzles, preferably a ring line in order to spray the liquid as evenly as possible.

Der Flüssigkeit können Additive zugefügt sein, die die Bindung des Staubs begünstigen, insbesondere können Schaumbildner beigesetzt sein, wodurch der Staubschutzraum zumindest teilweise mit einem Schaum geflutet werden kann.Additives can be added to the liquid, which promote the binding of the dust; in particular, foaming agents can be added, as a result of which the dust protection space can be at least partially flooded with a foam.

Es ist grundsätzlich auch möglich, dass die Staubschutzeinrichtung sowohl über eine Absaugeinrichtung als auch eine Sprüheinrichtung verfügt. In der Praxis ist es aber ausreichend, wenn entweder eine Absaugeinrichtung oder eine Sprüheinrichtung vorgesehen ist.It is also possible in principle for the dust protection device to have both a suction device and a spray device. In practice, however, it is sufficient if either a suction device or a spray device is provided.

Der Staubschutzraum ist vorzugsweise ein den Streuraum mit Ausnahme der Ober- und Unterseite umschließender Raum. In der Praxis kann es aber ausreichend sein, wenn der Staubschutzraum den Streuraum nicht vollständig umschließt. Beispielsweise kann im Bereich der Längsseiten des Streuraums möglicherweise eine geringere Staubentwicklung auftreten, so dass der Staubschutzraum dort offen sein kann.The dust-proofing room is preferably a space enclosing the spreader room except the top and bottom. In practice, however, it may be sufficient if the dust protection room does not completely surround the spreader room. For example, in the region of the longitudinal sides of the spreader room, less dust may possibly occur, so that the dust protection room can be open there.

Die den Streuraum und den Staubschutzraum umschließenden Staubschutzelemente sind vorzugsweise in der Art einer Schürze ausgebildete Elemente, wobei zumindest die den Staubschutzraum umschließenden Staubschutzelemente zumindest teilweise aus einem flexiblen Material bestehen, so dass die Staubschutzelemente auf dem Boden aufliegen und über den Boden streifen können. Dadurch lassen sich Bodenunebenheiten ausgleichen. Die Staubschutzelemente bestehen vorzugsweise vollständig aus flexiblem Material. Es ist aber auch möglich, dass sie eine starre Staubschutzhaube umfassen, an denen Streifen aus flexiblem Material befestigt sind.The dust protection elements enclosing the scattering space and the dust protection space are preferably elements designed in the manner of an apron, wherein at least the dust protection elements enclosing the dust protection space at least partially consist of a flexible material, so that the dust protection elements can rest on the ground and strip over the ground. As a result, uneven floors can be compensated. The dust protection elements preferably consist entirely of flexible material. But it is also possible that they include a rigid dust cover on which strips of flexible material are attached.

Die Baumaschine ist vorzugsweise eine nicht-selbstfahrende Baumaschine, insbesondere eine nicht-selbstfahrende Baumaschine zum Streuen von Bindemitteln für die Bodenstabilisierung, die an ein Zugfahrzeug, insbesondere an einen Traktor angebaut oder von einem Zugfahrzeug geschleppt wird oder auf ein Zugfahrzeug aufgebaut wird. Es ist aber auch möglich, dass die Baumaschine eine selbstfahrende Baumaschine ist, die über eine eigene Antriebseinheit verfügt. Insbesondere kann die Baumaschine ein Stabilisierer oder Recycler mit einem integrierten Bindemittelstreuer sein.The construction machine is preferably a non-self-propelled construction machine, in particular a non-self-propelled construction machine for spreading binders for soil stabilization, which is attached to a towing vehicle, in particular to a tractor or towed by a towing vehicle or is built on a towing vehicle. But it is also possible that the construction machine is a self-propelled construction machine, which has its own drive unit. In particular, the construction machine may be a stabilizer or recycler with an integrated binder spreader.

Im Folgenden werden mehrere Ausführungsbeispiele der erfindungsgemäßen Baumaschine zum Streuen von Streugut auf Böden im Einzelnen erläutert.In the following, several embodiments of the construction machine according to the invention for spreading of material to be spread on floors are explained in detail.

Es zeigen:

Fig.1
eine Prinzipskizze eines ersten Ausführungsbeispiels einer nicht- selbstfahrenden Baumaschine zum Streuen von Bindemitteln für die Bodenstabilisierung in teilweise geschnittener Darstellung,
Fig. 2
die Ansicht der Baumaschine von Fig. 1 aus der Richtung des Pfeils II in teilweise geschnittener Darstellung,
Fig. 3
eine Prinzipskizze eines zweiten Ausführungsbeispiels der Baumaschine in teilweise geschnittener Darstellung und
Fig. 4
die Baumaschine von Fig. 3 in der Ansicht aus der Richtung des Pfeils IV und
Fig. 5
einen Stabilsierer oder Recycler mit einer integrierten Vorrichtung zum Streuen von Bindemitteln in stark vereinfachter Darstellung.
Show it:
Fig.1
a schematic diagram of a first embodiment of a non-self-propelled construction machine for spreading binders for soil stabilization in a partially sectioned view,
Fig. 2
the view of the construction machine of Fig. 1 from the direction of arrow II in a partially sectioned view,
Fig. 3
a schematic diagram of a second embodiment of the construction machine in a partially sectional view and
Fig. 4
the construction machine of Fig. 3 in the view from the direction of the arrow IV and
Fig. 5
a stabilizer or recycler with an integrated device for spreading binders in a highly simplified representation.

Die Figuren 1 und 2 zeigen in stark vereinfachter schematischer Darstellung die wesentlichen Komponenten einer nicht-selbstfahrenden Baumaschine zum Streuen von Bindemitteln für die Bodenstabilisierung, die nachfolgend als Bindemittelstreuer bezeichnet wird. Der Bindemittelstreuer wird an ein nicht-dargestelltes Zugfahrzeug, beispielsweise einen Traktor angebaut, der den Bindemittelstreuer schleppt. An dem Traktor kann der Bindemittelstreuer in der Höhe zum Boden verstellt werden.The Figures 1 and 2 show in a highly simplified schematic representation of the essential components of a non-self-propelled construction machine for spreading binders for soil stabilization, which is referred to below as a binder spreader. The binder spreader is attached to an unillustrated towing vehicle, such as a tractor, which tows the binder spreader. On the tractor, the binder spreader can be adjusted in height to the ground.

Der Bindemittelstreuer verfügt über ein im Wesentlichen rechteckförmiges Chassis 1 mit einer in Fahrtrichtung vorderen Vorderwand 1A, einer in Fahrtrichtung hinteren Rückwand 1B sowie zwei Seitenwänden 1C und 1D. Die höhenverstellbare Montage des Bindemittelstreuers an dem Traktor erfolgt mit einer nur andeutungsweise dargestellten Anbaueinrichtung 2 an der Vorderseite des Chassis 1.The binder spreader has a substantially rectangular chassis 1 with a forward front wall 1A in the direction of travel, a rear rear wall 1B in the direction of travel and two side walls 1C and 1D. The height-adjustable mounting of the binder spreader on the tractor is done with a hint of attachment 2 shown on the front of the chassis. 1

Zur Aufnahme des Bindemittels verfügt der Bindemittelstreuer über einen geschlossenen Streugutbehälter 3, der an der Oberseite eine Einfüllöffnung 4 aufweist. Unterhalb des Streugutbehälters 3 befindet sich eine Streueinrichtung 5, die aus mehreren selbstreinigenden Dosierschleusen in Zellenradbauweise besteht. Der Aufbau eines derartigen Streuwerks ist dem Fachmann bekannt.For receiving the binder, the binder spreader has a closed grit container 3, which has a filling opening 4 at the top. Below the grit container 3 is a scattering device 5, which consists of several self-cleaning metering locks in Zellenradbauweise. The construction of such a scattering unit is known to the person skilled in the art.

Die Streueinrichtung 5 weist an der Unterseite ein oder mehrere Auslassöffnungen 6 auf, an denen das Bindemittel austritt und auf den Boden fällt. Um die dabei entstehende Staubentwicklung zu verhindern, verfügt der Bindemittelstreuer über eine Staubschutzeinrichtung 7.The spreader 5 has at the bottom of one or more outlet openings 6, where the binder exits and falls to the ground. In order to prevent the resulting dust development, the binder spreader has a dust protection device 7.

Die Staubschutzeinrichtung 7 weist jeweils an der Vorder- und Rückwand 1A, 1B sowie den Seitenwänden 1C, 1 D befestigte Staubschutzelemente 7A, 7B, 7C, 7D auf. Der Raum zwischen der Unterseite der Streueinrichtung 5 und dem Boden, den die Staubschutzelemente seitlich umschließen, wird als Streuraum 8 bezeichnet. Es ist nicht zwingend erforderlich, dass die Staubschutzelemente den Streuraum von allen Seiten vollständig umschließen. Beispielsweise ist es auch möglich, dass der Streuraum an den Längsseiten zumindest teilweise offen ist.The dust protection device 7 has in each case on the front and rear walls 1A, 1B and the side walls 1C, 1 D fixed dust protection elements 7A, 7B, 7C, 7D. The space between the underside of the spreader 5 and the floor, which surround the dust protection elements laterally, is referred to as a spreader room 8. It is not mandatory that the dust protection elements completely surround the spreader room from all sides. For example, it is also possible that the spreader room is at least partially open on the long sides.

Die Staubschutzelemente 7A, 7B, 7C, 7D sind jeweils in der Art einer Schürze ausgebildete Elemente aus einem flexiblen Material. Als flexible Staubschutzelemente können beispielsweise rechteckförmige Folienstücke aus Kunststoff, beispielsweise Gummilappen oder dergleichen, verwendet werden, die in den Abmessungen des Chassis zugeschnitten sind. An den unteren Rändern können die Folienstücke mit im Abstand zueinander angeordneten Einschnitten versehen sein, um die Flexibilität zu erhöhen. Die flexiblen Staubschutzelemente, haben vorzugsweise eine ausreichende Länge, so dass sie über den Boden streifen, wenn der Bindemittelstreuer von dem Traktor über den Boden bewegt wird.The dust protection elements 7A, 7B, 7C, 7D are each formed in the manner of a skirt elements made of a flexible material. As a flexible dust protection elements, for example, rectangular plastic foil pieces, such as rubber cloths or the like, can be used, which are tailored in the dimensions of the chassis. At the lower edges, the pieces of film may be provided with spaced incisions to increase flexibility. The flexible dust control elements are preferably of sufficient length to strike the ground as the binder spreader is moved across the ground by the tractor.

Die Staubschutzeinrichtung 7 verfügt darüber hinaus über weitere flexible Staubschutzelemente 8A, 8B, 8C, 8D, die im Abstand zu den ersten Staubschutzelementen angeordnet sind. Die zweiten Staubschutzelemente 8A, 8B, 8C, 8D, die wie die ersten Staubschutzelemente 7A, 7B, 7C, 7D jeweils in der Art einer Schürze ausgebildet sind, umschließen die ersten Staubschutzelemente an der Vorder- und Rückseite und den Längsseiten. Auch die zweiten Staubschutzelemente haben wieder eine ausreichende Länge, so dass sie über den Boden streifen, wenn der Bindemittelstreuer über den Boden bewegt wird. Der Raum zwischen den in Fahrtrichtung der Baumaschine vorderen und hinteren sowie den in Längsrichtung verlaufenden seitlichen Staubschutzelementen wird als Staubschutzraum 9 bezeichnet.The dust protection device 7 also has further flexible dust protection elements 8A, 8B, 8C, 8D, which are arranged at a distance from the first dust protection elements. The second dust protection elements 8A, 8B, 8C, 8D, which are like the first dust protection elements 7A, 7B, 7C, 7D each formed in the manner of a skirt, enclose the first dust protection elements on the front and back and the long sides. Again, the second dust guard elements are of sufficient length to strike the ground as the binder spreader is moved across the ground. The space between the front and in the direction of travel of the construction machine Rear and the longitudinal side lateral dust protection elements is referred to as dust protection space 9.

Zum Absaugen des Staubs aus dem Staubschutzraum 9 ist eine Absaugeinrichtung 10 vorgesehen. Die Absaugeinrichtung 10 weist eine ringförmige Saugleitung 11 mit einer Vielzahl von im Abstand angeordneten Saugdüsen 12 auf, die zwischen den ersten und zweiten Staubschutzelementen in der oberen Hälfte des Staubschutzraums 9 verläuft. Die Ringleitung 11 ist über eine nicht dargestellte Saugleitung mit einer Einrichtung 13 zum Ansaugen von Luft aus dem Staubschutzraum 9 verbunden. Die Absaugeinrichtung 10 weist einen Sammelbehälter 14 auf, in dem der aus dem Staubschutzraum abgesaugte Staub gesammelt wird, wobei die Abluft über einen nicht dargestellten Filter abgeblasen wird. Eine nur andeutungsweise dargestellte Einrichtung 14A überführt den in dem Sammelbehälter 14 gesammelten Staub über einen nur andeutungsweise dargestellten Kanal 14B in den Streugutbehälter 3. Der gesammelte Staub kann beispielsweise in den Stillstandzeiten der Absaugseinrichtung in den Streugutbehälter geblasen werden.For sucking off the dust from the dust protection space 9, a suction device 10 is provided. The suction device 10 has an annular suction line 11 with a plurality of spaced suction nozzles 12, which extends between the first and second dust protection elements in the upper half of the dust protection space 9. The ring line 11 is connected via a suction line, not shown, with a device 13 for sucking air from the dust protection space 9. The suction device 10 has a collecting container 14, in which the dust extracted from the dust protection space is collected, wherein the exhaust air is blown off via a filter, not shown. An only schematically illustrated device 14A transfers the dust collected in the collecting container 14 into the grit container 3 via a channel 14B, which is shown only as an indication. The collected dust can be blown into the grit container, for example, in the standstill times of the suction device.

Während des Betriebs des Bodenmittelstreuers wird beim Ausbringen des Streuguts anfallender Staub zunächst in dem Streuraum 8 zurückgehalten. Derjenige Staub, der aus dem Streuraum entweicht, wird dann mit der Absaugeinrichtung 10 in dem den Streuraum umschließenden Staubschutzraum 9 abgesaugt. Dadurch wird wirkungsvoll vermieden, dass Staub in die Umgebung gelangt.During operation of the soil medium spreader, dust that is produced during the spreading of the spreading material is initially retained in the spreader space 8. The dust which escapes from the scattering space is then sucked with the suction device 10 in the dust protection space 9 enclosing the scattering space. This effectively prevents dust from entering the environment.

Die Figuren 3 und 4 zeigen eine alternative Ausführungsform des Bindemittelstreuers, der sich von dem unter Bezugnahme auf die Figuren 1 und 2 beschriebenen Ausführungsbeispiel nur dadurch unterscheidet, dass anstelle einer Absaugeinrichtung für den Staub eine Sprüheinrichtung vorgesehen ist. Die einander entsprechenden Teile sind daher mit den gleichen Bezugszeichen versehen. Die Sprüheinrichtung 15 umfasst eine wiederum in der oberen Hälfte des Staubschutzraums 9 angeordnete Ringleitung 16, an der eine Vielzahl von im Abstand zueinander angeordnete Sprühdüsen 17 vorgesehen sind. Von der Ringleitung 16 führt eine nicht dargestellte Sprühmittelleitung zu einem Sprühmittelbehälter 18, aus dem über eine nicht dargestellte Pumpe Sprühmittel in die Ringleitung 16 gefördert wird. Das Sprühmittel bindet den in den Staubschutzraum 9 gelangenden Staub oder schlägt ihn nieder, so dass eine weitere Staubbildung wirkungsvoll verhindert wird. Dem Sprühmittel ist vorzugsweise ein Additiv beigemischt, das die Bindung des Staubs begünstigt. Insbesondere ist dem Sprühmittel ein Schaumbildner beigemischt, der in einem separaten Additivbehälter bereitgestellt und in den Sprühmittelbehälter gefördert werden kann. Dadurch wird erreicht, dass sich in dem Staubschutzraum ein Schaum bildet, der den Staub bindet. Mit den in Fahrtrichtung hinteren Staubschutzelementen, die den Staubschutzraum begrenzen, kann der Schaum dann glatt gezogen werden. Der auf dem Boden verbleibende Schaumteppich bindet den Staub auf dem Boden dann solange bis der Boden aufgefräst und das Bindemittel in den Boden eingemischt wird. Damit kann eine Staubentwicklung auch dann wirkungsvoll verhindert werden, wenn insbesondere bei stärkeren Winden die Baumaschine zum Auffräsen des Bodens erst relativ spät dem Bindemittelstreuer folgt.The FIGS. 3 and 4 show an alternative embodiment of the binder spreader, which differs from that with reference to FIGS Figures 1 and 2 described embodiment differs only in that instead of a suction device for the dust, a spraying device is provided. The corresponding parts are therefore provided with the same reference numerals. The spraying device 15 comprises a ring pipe 16, which in turn is arranged in the upper half of the dust-proofing space 9, on which a multiplicity of spraying nozzles 17 arranged at a distance from one another are provided. From the ring line 16 leads a spray medium, not shown, to a Sprühmittelbehälter 18, from which via a pump, not shown, spray is conveyed into the loop 16. The spray binds the in the dust protection space. 9 reaching dust or knocking it down, so that further dust formation is effectively prevented. The spray is preferably admixed with an additive which promotes the binding of the dust. In particular, the spray is mixed with a foaming agent, which can be provided in a separate additive container and conveyed into the Sprühmittelbehälter. This ensures that forms a foam in the dust shelter, which binds the dust. With the rear dust protection elements in the direction of travel, which limit the dust protection space, the foam can then be pulled smoothly. The foam carpet remaining on the floor binds the dust on the floor until the floor is milled and the binder is mixed into the floor. In order for a dust development can be effectively prevented even if especially in stronger winds, the construction machine for milling the soil relatively late follow the binder spreader.

Die beiden Ausführungsbeispiele zeigen einen Anbau-Bindemittelstreuer, der an einen Traktor angebaut wird. Die erfindungsgemäße Staubschutzeinrichtung kann aber auch bei einem Bindemittelstreuer vorgesehen sein, der von einem Lastwagen gezogen wird. Auch kann es sich bei dem Bindemittelstreuer um einen selbstfahrenden Bindemittelstreuer handeln. Insbesondere kann es sich um einen Stabilisierer oder Recycler mit einem integrierten Bindemittelstreuer handeln.The two embodiments show a cultivation binder spreader, which is attached to a tractor. The dust protection device according to the invention can also be provided in a binder spreader, which is pulled by a truck. Also, the binder spreader may be a self-propelled binder spreader. In particular, it may be a stabilizer or recycler with an integrated binder spreader.

Fig. 5 zeigt in stark vereinfachter Darstellung einen Stabilisierer oder Recycler mit einer integrierten Vorrichtung zum Streuen von Bindemitteln. Da der Recycler oder Stabilisierer mit Ausnahme der erfindungsgemäßen Vorrichtung zum Streuen von Bindemitteln zum Stand der Technik gehört, werden nur die wesentlichen Komponenten der Baumaschine beschrieben. Der Recycler oder Stabilisierer, der als solcher beispielsweise in der EP 1 012 396 B1 beschrieben ist, weist einen in der Höhe verstellbaren Maschinenrahmen 19 mit zwei vorderen Rädern 20 und zwei hinteren Rädern 21 auf. Auf dem Maschinenrahmen 19 ist ein Fahrstand 22 mit einer Fahrerkabine 23 angeordnet. Zwischen den Vorder- und Hinterrädern 19, 20 befindet sich am Maschinenrahmen 19 ein Rotorgehäuse 24, in dem ein Fräs- oder Mischrotor 25 angeordnet ist. Neben dem Fräs- und Mischrotor 25 verfügt der Stabilisierer oder Recycler über die Vorrichtung zum Streuen von Bindemittel. In Fig. 5 werden die einzelnen Komponenten der Vorrichtung zum Streuen von Bindemittel mit den gleichen Bezugszeichen bezeichnet wie die entsprechenden Komponenten des Bindemittelstreuers, der unter Bezugnahme auf die Fig. 1 bis 4 beschrieben ist. Der integrierte Bindemittelstreuer weist einen trichterförmigen Streugutbehälter 3 auf, in dem das Bindemittel bereitgestellt wird. Unterhalb des Streugutbehälters ist die Streueinrichtung 5 zum Ausbringen des Bindemittels angeordnet. Unterhalb der Streueinrichtung befindet sich die Staubschutzeinrichtung 7, die wie bei dem Bindemittelstreuer von den Figuren 1 bis 4 wieder über erste und zweite Staubschutzelemente 7A, 8A verfügt, die einen Streuraum 8 und einen Staubschutzraum 9 begrenzen. Das mit der Vorrichtung ausgebrachte Bindemittel wird unmittelbar nach dem Ausbringen von dem Fräs- oder Mischrotor 25 des Stabilisierers oder Recyclers überfahren und mit dem aufgefrästen Boden vermischt. Fig. 5 shows in a highly simplified representation of a stabilizer or recycler with an integrated device for spreading binders. Since the recycler or stabilizer, with the exception of the binder spreading apparatus according to the invention, belongs to the state of the art, only the essential components of the construction machine are described. The recycler or stabilizer, as such, for example, in the EP 1 012 396 B1 has a height-adjustable machine frame 19 with two front wheels 20 and two rear wheels 21. On the machine frame 19, a control station 22 is arranged with a driver's cab 23. Between the front and rear wheels 19, 20 is located on the machine frame 19, a rotor housing 24 in which a milling or mixing rotor 25 is arranged. In addition to the milling and mixing rotor 25, the stabilizer or recycler has the device for spreading binder. In Fig. 5 become the individual components of the device for spreading of binder with the same reference numerals as the corresponding components of the binder spreader, with reference to the Fig. 1 to 4 is described. The integrated binder spreader has a funnel-shaped grit container 3, in which the binder is provided. Below the grit container, the spreader 5 is arranged for discharging the binder. Below the spreader is the dust guard 7, which as in the binder spreader from the FIGS. 1 to 4 again has first and second dust protection elements 7A, 8A, which define a spreader room 8 and a dust protection space 9. The applied with the device binder is run over immediately after the application of the milling or mixing rotor 25 of the stabilizer or recycler and mixed with the milled soil.

Die Staubschutzreinrichtung 7 kann sämtliche Komponenten der Staubschutzeinrichtung der Figuren 1 bis 4 aufweisen, auch wenn die einzelnen Teile in der Fig. 6 nicht dargestellt sind. So ist beispielsweise auch eine Absaugeinrichtung oder eine Sprüheinrichtung vorgesehen, die unter Bezugnahme auf die Figuren 1 bis 4 im Einzelnen beschrieben ist.The dust protection device 7, all components of the dust protection of the FIGS. 1 to 4 have, even if the individual parts are not shown in FIG. 6. Thus, for example, a suction device or a spray device is provided, with reference to the FIGS. 1 to 4 is described in detail.

Claims (14)

  1. A construction machine for distributing spreading material on soil, in particular a construction machine for distributing binding agents for soil stabilization having
    a spreading material container (3) for accommodating the spreading material,
    a spreading device (5) with one or more outlet openings (6) for applying the spreading material,
    a dust protection device (7) arranged beneath the one or more outlet openings of the spreading device (5),
    characterized in that
    the dust protection device (7) has one or more first dust protection elements (7A, 7B, 7C, 7D) which encompass a spreading area (8) arranged beneath the one or more outlet openings of the spreading device (5), and one or more second dust protection elements (8A, 8B, 8C, 8D) which encompass the first dust protection elements while forming a dust protection area (9), wherein at least the second dust protection elements (8A, 8B, 8C, 8D) are designed flexibly in such a way that they can brush over the soil.
  2. The construction machine as claimed in claim 1, characterized in that the dust protection device (7) has an extraction device (10) for extracting dust from the dust protection area (9).
  3. The construction machine as claimed in claim 2, characterized in that the extraction device (10) has a collecting container (14) for dust.
  4. The construction machine as claimed in claim 3, characterized in that the extraction device (10) has a device (14A) for transferring the dust which is collected in the collecting container (14) into the spreading material container (3).
  5. The construction machine as claimed in one of claims 1 to 4, characterized in that the dust protection device (7) has a spray device (15) for spraying the dust protection area (9) with a liquid.
  6. The construction machine as claimed in claim 5, characterized in that the spray device (15) has a pipe (16) with spray nozzles (17) arranged in the dust protection area (9).
  7. The construction machine as claimed in claim 5 or 6, characterized in that an additive for binding or precipitating the dust is mixed with the liquid for spraying the dust protection area (9).
  8. The construction machine as claimed in claim 7, characterized in that the additive for binding or precipitating the dust is an additive for forming foam.
  9. The construction machine as claimed in one of claims 1 to 8, characterized in that the dust protection area (9) is an area which encompasses the spreading area (8).
  10. The construction machine as claimed in one of claims 1 to 9, characterized in that the first and/or second dust protection elements (7A, 7B, 7C, 7D; 8A, 8B, 8C, 8D) are elements made at least partially of a flexible material and designed in the form of an apron.
  11. The construction machine as claimed in one of claims 1 to 10, characterized in that the spreading area (8) is bounded by front dust protection elements (7A) in the direction of travel and rear dust protection elements (7B) in the direction of travel and dust protection elements (7C, 7D) which run laterally in the longitudinal direction of the construction machine.
  12. The construction machine as claimed in one of claims 1 to 11, characterized in that the dust protection area (9) is bounded by front dust protection elements (8A) in the direction of travel and rear dust protection elements (8B) in the direction of travel and dust protection elements (8C, 8D) which run laterally in the longitudinal direction of the construction machine.
  13. The construction machine as claimed in one of claims 1 to 12, characterized in that the construction machine is a non-self-propelled construction machine, in particular a non-self-propelled construction machine for distributing binding agents for soil stabilization, which can be fitted to a towing vehicle, in particular a tractor, or be towed by the towing vehicle.
  14. The construction machine as claimed in one of claims 1 to 12, characterized in that the construction machine is a recycler or stabilizer which has a tilling or mixing rotor (25) for tilling the soil and mixing-in the spreading material, in particular binding agent.
EP10000331.8A 2009-02-07 2010-01-15 Construction machine for distributing spreading material on soil Active EP2216444B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009007996A DE102009007996B4 (en) 2009-02-07 2009-02-07 Construction machine for spreading spreading material on floors

Publications (3)

Publication Number Publication Date
EP2216444A2 EP2216444A2 (en) 2010-08-11
EP2216444A3 EP2216444A3 (en) 2012-03-07
EP2216444B1 true EP2216444B1 (en) 2013-08-21

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EP10000331.8A Active EP2216444B1 (en) 2009-02-07 2010-01-15 Construction machine for distributing spreading material on soil

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US (1) US8342772B2 (en)
EP (1) EP2216444B1 (en)
CN (2) CN201778269U (en)
DE (1) DE102009007996B4 (en)

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BR112013026464A2 (en) 2011-04-15 2016-12-20 Lta Corp transport system including a floating vehicle
FR2994446B1 (en) * 2012-08-13 2015-05-22 Remi Durand DEVICE FOR REMOVING PULVERULENTS FROM THE GROUND, WITH DOSING AND CONTROL OF DUST EMISSIONS AND POSSIBILITY OF INCORPORATION TO THE GROUND, IN PARTICULAR ROAD BINDERS
CN105332332B (en) * 2015-10-27 2017-07-14 广州大学 A kind of grouting equipment built suitable for half-flexible pavement
MD4494C1 (en) * 2016-03-04 2018-01-31 Geoteh Nova О.О.О. Soil stabilization equipment and process
US10718099B2 (en) * 2017-12-29 2020-07-21 Farzad Moradi Leveling, tune-up and compacting device
CN108532420B (en) * 2018-04-27 2020-07-31 广东汇晟建设有限公司 Soil surface material paving machine for civil engineering
CN112627152B (en) * 2020-12-08 2022-02-08 中冶集团武汉勘察研究院有限公司 Layered soil paving and pressing device for geotechnical engineering
CN113846534B (en) * 2021-10-29 2022-08-26 泗洪县城市建设投资经营集团有限公司 Splicing type synchronous chip sealer

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Also Published As

Publication number Publication date
EP2216444A2 (en) 2010-08-11
DE102009007996A1 (en) 2010-08-19
CN101798792B (en) 2012-01-11
EP2216444A3 (en) 2012-03-07
CN101798792A (en) 2010-08-11
CN201778269U (en) 2011-03-30
DE102009007996B4 (en) 2011-06-01
US20100202832A1 (en) 2010-08-12
US8342772B2 (en) 2013-01-01

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