DE202008012104U1 - Work train with a milling device - Google Patents

Abstract

Work train (1) for the treatment of carriageways, comprising
a) a self-propelled milling vehicle (2) with a milling device (6);
b) in the working direction (A) of the work train (1) in front of the milling vehicle (2) positioned self-propelled silo vehicle (3) with a reservoir (4) for bulk material (20), wherein the silo vehicle (3) has a mechanical transport device (21) formed for conveying the bulk material (20) from the storage container (4);
c) a buffer silo (10) with a metering and application device (13), wherein the metering and application device (13) in the working train (1) is arranged in such a way that it the bulk material (20) on the surface (5) the roadway in the working direction (A) of the work train (1) in front of the milling device (6) applies; and
d) a further transport device (19, 18, 22, 23, 24), which is designed in such a way that it the bulk material (20) from the reservoir (4) of the silo vehicle (3) in the working operation of the work train (1) in the Buffer silo (10) transported.

Description

The The invention relates to a work train comprising a self-propelled Fräsfahrzeug with a milling device and a working direction of the work train in front of the milling vehicle positioned self-propelled silo vehicle with a storage container for bulk goods, wherein the silo vehicle has a mechanical transport device, those for promotion of the bulk material from the reservoir is trained. Both the milling vehicle as well as the silo vehicle are thus two independently driven and operated machines arranged in series one behind the other are and about drive the road surface to be processed.

A Fräsfahrzeug becomes common used in the processing of road surfaces. The milling vehicle has a milling device on, one over Its circumference equipped with suitable cutting tools rotor includes. Task of the milling vehicle it is doing it, by means of the milling device Material from the surface the surface to be processed, such as a road surface, remove, bring a profiling in the surface or for example also a material preparation, for example to stabilize unsuitable soil, etc., to enable. To become such milling vehicles often with the milling vehicles used in front of leading lorries combined. These spreading vehicles bring suitable bulk materials the road surface, the subsequently be run over by the milling device and by the milling device be mixed under the removed material. In such bulk materials is in particular hydraulic binders, such as lime, cement, Fly ash, cement suspensions, emulsions, etc., when mixed allow soil to bind the contained moisture. The subsequent leveling of the substrate by means of grading and / or rolling can in this way be greatly facilitated.

It However, it has been shown that the approach described above unsatisfactory in several respects. On the one hand is a high Proportion of the common powdery bulk by wind etc. after application and before driving over and working through the milling device from the surface of the section to be processed, so that usually a substantial bulk quantity applied to the road surface must be to compensate for this loss again. This to However, part drastic material loss increases the required Material costs not insignificant. In addition, the massive dust formation during application of the bulk material or through the subsequent Fade in so far disadvantageous, as that the bulk materials used on a size area be distributed. This is not just for construction workers working on the job site and for the local machines a burden, but especially under ecological Issues problematic.

First Solutions were through the integration of bulk material storage containers included Dosing and application device reached in the milling device itself. In this way it was no longer necessary for a stray vehicle in some considerable Distance in front of the milling device the bulk material the surface of the substrate to be processed. However, these are integrated reservoir disadvantageous in that they only have a comparatively small Filling volume feature. This makes frequent Interruptions of the operation required, as the integrated Reservoir already be refilled again and again after short work intervals / distances got to. A filling takes place for example about Silo vehicles equipped to store considerably larger quantities of bulk material. These silo vehicles preferably have a pneumatic transport device for this purpose (ie transport by means of a gas stream), as this type of transport device especially reliable is and also allows flexible use. So, for example flexible hoses etc. are used for transport, which in particular in the often cramped space Construction site area is beneficial. This filling process is however comparatively time-consuming, since an operation of silo vehicles by means of pneumatic Transport devices is only possible when the silo vehicle is stationary. This is due to the fact that Such silo vehicles or their reservoir usually with pressure have to be charged about a transport over to allow the pneumatic transport device. The use of such Vehicles on uneven ground is therefore for safety reasons in rule out.

present Thus there is the problem that long working intervals inevitably with a high bulk material loss and the other disadvantages associated with it. A Reduction of these disadvantages is possible through direct integration a storage container possible in the milling vehicle. Indeed This arrangement requires only very short working intervals, which a high loss of working time due to the often required refilling of this reservoir entry.

task The invention is therefore a possibility for applying bulk on a road surface and its subsequent Incorporation in milled Substrate material, in which the dust and the bulk loss is low and at the same time comparatively long working intervals possible are.

The solution The task succeeds with a work train according to one of the independent claims. preferred Trainings are in the dependent protection claims specified.

Of the inventive work train thus comprises a self-propelled milling vehicle with a milling device, a working direction of the work train in front of the milling vehicle positioned self-propelled silo vehicle with a storage container for bulk goods, wherein the silo vehicle has a mechanical transport device, those for promotion of the bulk material from the reservoir is formed, a buffer silo with a dosing and application device, wherein the metering and application device in the way in the work train is arranged that they are the bulk material on the surface the roadway in the working direction of the work train in front of the milling device applies and another transport means formed in the way is that they are the bulk of the reservoir of the silo vehicle in working mode of the work train in the buffer silo transported. The invention according to this Embodiment draws Thus, essentially by the fact that by the integration of a silo vehicle in the work train, the amount entrained in the work train for applying to the surface to be processed available bulk material is very large and at the same time no interruption of the work process in short Intervals for replenishment of the work train bulk is required. This is possible this completely new approach only by the fact that the silo vehicle considerable larger quantities on bulk material can store and at the same time this bulk material during operation can supply the dosing and application device. The work train according to the invention allows it thus, about to carry a much larger quantity of bulk material into the work process than those embodiments from the prior art, for example, a small to the milling Provide attached silo.

Under Silo vehicle is in the following any type of self-propelled silotragender To understand unity. This can be, for example, a two- or multi-axis Be truck with a corre sponding silo structure. Under silo vehicle falls, however For example, a unit of a tractor and a pendant with appropriate silo construction. Again, the trailer can be taken for granted be formed two- or multi-axis. The important thing is that Silo vehicle in its entirety is self-propelled and thus, for example, not depends directly on the movement of the milling vehicle.

The Silo vehicle of the work train according to the invention has a mechanical transport device that out the bulk material the reservoir transported out. Such a mechanical transport device For example, a screw conveyor, a scraper floor, a conveyor belt etc. be. The mechanical transport device is thus present essentially for that responsible, the bulk material from the reservoir of the silo vehicle and to the further work process.

A sees embodiment of the invention furthermore, a buffer silo. The buffer silo is much smaller as the storage silo of the silo vehicle. This buffer silo is procedurally between the storage silo of the spreading vehicle and the metering and application unit arranged. The central task of the buffer silo is to and metering continuously feed bulk material. However, the buffer silo designed only for receiving a comparatively small amount of bulk material, so that the bulk material in the buffer silo in the working process also consumed quite quickly. But this is not a problem because the buffer silo always ahead by the direction in advance running silo vehicle filled up becomes.

The Control of this interplay between filling the buffer silo and the Consumption of the bulk material in the buffer silo can in many ways Be varied. So it is possible, for example, that the refilling of the buffer silo begins only when the bulk material in the buffer silo a previously set value. This is among other things possible, corresponding level sensors, For example, suitable ultrasonic sensors, etc., in the buffer silo to arrange. Alternatively, however, is a vote from the Buffer silo delivered bulk amount the amount charged into the buffer silo from the silo vehicle possible, so that the buffer silo is filled almost continuously, with which the quantity of bulk material stored in the buffer silo is kept almost constant becomes.

The filling of the buffer silo is over the further transport device. This is procedurally between the mechanical transport device and the buffer silo arranged. The further transport device receives the bulk material from the mechanical Transport device, which removes the bulk material from the reservoir of the Silo vehicle out. This further transport device can also be designed mechanically working, d. H. here comes For example, the use of a conveyor belt or a screw conveyor in question.

However, the further transport device is particularly preferably a pneumatic transport device. For this purpose, the buffer silo with the silo of the silo vehicle is over connected suitable transport line. This can be realized for example in the form of rigid pipes, or preferably in the form of hoses. The latter is for example advantageous in that flexible transport hoses etc. can be used in a pneumatic filling, whereby the versatility of the work train can be further increased.

Conveniently, is on the buffer silo also a corresponding exhaust air filtration system available. These Exhaust air filter system allows the outlet of the transport gas of the pneumatic filling, for example Compressed air, from the buffer silo. It is due to the fact that the presently considered bulk material often powdery to feinpulvrig is possible, that too an elevated Dust discharge from the buffer silo could occur if the transport gas discharged from the buffer silo becomes. However, this prevents the exhaust air filtration system, the bulk material particles filters out accordingly from the transport gas to be discharged. Indeed the invention is characterized in that it is for pneumatic filling the buffer silos present is not required that the reservoir of the Silo vehicle also needs to be pressurized, as is in known from the prior art silo vehicles in the majority the case is.

Also the arrangement of the buffer silo in the work train can of course vary. In a preferred embodiment the buffer silo is arranged, for example, on the milling vehicle. there it goes without saying conceivable to integrate the buffer silo firmly in or on the milling vehicle. The Fräsfahrzeug leads this embodiment thus the buffer silo always with it, even if no bulk material order to the road surface instead place. It has turned out to be particularly favorable, the Buffer silo in working direction between the driver's cab of the milling vehicle and the milling device to install. There is sufficient space available, the Buffer silo into the milling vehicle to integrate without the external dimensions of the milling vehicle to enlarge.

alternative is the buffer silo to the milling vehicle designed and dismantled trained. The buffer silo is This is thus a separate attachment. This embodiment is characterized by an increased variability and is also cheaper, not in every milling vehicle a buffer silo must be firmly integrated. To the buffer silo at Fräsfahrzeug to attach is in this embodiment a holding device is present on the milling vehicle, formed for receiving the buffer formed as an attachment silo is. In addition come in principle all of the prior art for such Attachments suitable holding devices in question. These are ideally as quick-release fasteners designed to minimize the required changeover times. The Buffer silo is in this embodiment furthermore preferably in the working direction at the front of the milling vehicle arranged so that it relates to the entire work train between the reservoir and the milling device is located. As a result, on the one hand easy accessibility of the holding device guaranteed and on the other hand, the transport routes between the reservoir and the buffer silo and between the buffer silo and the order and Metering relatively low.

Also the positioning of the dosing and application device may vary. In a particularly preferred embodiment, this is for example in the way on the milling vehicle arranged that they are the bulk material in the working direction of the work train immediately before the milling device on the surface the road surface. This embodiment is so far from Advantage, since the residence time of applied to the surface to be processed bulk is especially small. Finally, the milling device passes over almost immediately after the bulk material application the bulk material and mixes the bulk material while in the milling process with the underground material.

A further variation possibility the metering and application device consists in the control of Order amount. This can for example be time-dependent, so that over a specific time interval always the same material discharge takes place. However, it is particularly preferred, the bulk material discharge depending on the speed shape. In this type of dosage, the amount depends on the applied bulk Thus, it depends on which route the work train lays back. This type of control is superior in that one particular uniform bulk material application can be obtained without it being necessary for the work train maintains a nearly constant pace of work. Besides these variants Of course, the automatic control of the order quantity is also important possible, to provide a manual control.

In addition, the dosing and application device can also take on other tasks. It is thus possible, for example, for several types of bulk material to be mixed with one another in the metering and application device and for the resulting mixture to be deposited on the surface to be processed. Accordingly, it is within the scope of the invention also possible that the buffer silo and the application and metering device not only a single type of bulk material is supplied. Rather, it is also possible for a plurality of bulk materials or types to be separated from one another or even over a plurality of juxtaposed transport devices each other to the buffer silo and the order and metering device are supplied.

Especially compact is an inventive work train then formed when the order and metering device with the Buffer silo forms a common structural unit. This effect occurs particularly clearly when it comes to the buffer silo is an attachment. This embodiment is so far from Advantage, since the relatively complex and thus costly metering and applicator only ever in conjunction with a buffer silo is required.

Especially effectively leaves the dust development especially in the milling process or the loss of bulk material then reduce by drift if the milling device at least partially is covered by a hood covering a working space, and when the metering and applicator device covered in the hood Working space opens. Such hoods are for generic milling devices known. The hood covers the milling rotor of the milling device surrounding working space up and to the sides and thus allows For example, crushing and mixing processes and provides but also on the other side a protection of the environment from around flying from the milling rotor dissolved Material dar. Particularly preferably, the hood is relative to the milling vehicle can be raised and lowered. Does that end? Dosing and application device in these covered by the hood Workspace, finds the bulk material entry thus almost simultaneously with the milling process. A bulk material loss due to material drifting is thus almost impossible in this way.

One additional The object of the invention is to increase the space between the dosing and applicator and the milling device to the outside am To limit labor movement, in this way a drift of the bulk counteract. For this purpose, it is provided according to the invention, dust mats to arrange the work train, at least between order and Dosing device and milling device attached to the sides of the work train. In this way is the area of the work train in which the bulk material loosely on the machined surface rests against the sides of the work train against especially wind protected. The Dust mats are attached to the work train in a suitable manner, for example, via quick-release fasteners, Einhakösen etc ..

Even though thus basically a firm or permanent connection of the dust mats with the milling vehicle possible is a removable and cultivable embodiment is preferred because of this way the variability of the work train increased can be. So can For example, different dust protection mats for different ground conditions be particularly suitable. Are the dust protection mats on and degradable executed, can respond more flexibly to such differences. Furthermore, the Dust mats in such a way that they are different from the example Machine frame down to the surface of the substrate to be processed extend to the space between the applicator and metering device and the milling device effectively outward delineate.

The Dust mats pose no special challenges the material to use. Rather, all materials are suitable, which withstand the mechanical stress and good at the same time Achieve dust protection results. This can, for example, in particular fabric reinforced Be plastic or rubber mats.

This solution concept with dust mats can of course with the previous one described embodiments combined with buffer silo. It is in the use of Dust mats, however, also possible, in the work train instead a silo vehicle or supplementary to provide a scatter vehicle. In this embodiment The invention comprises the work train for processing roadways thus at least one self-propelled milling vehicle with a milling device, a working direction of the work train in front of the milling vehicle positioned self-propelled silo vehicle with an order and dosing (also collectively as a scattering vehicle designated), with a storage container for bulk material, and with a mechanical Transport equipment used to promote of the bulk material the reservoir is designed for order and metering device, a guide connection between the milling vehicle and the spreader vehicle and a dust cover mat that in the working direction of the work train on both sides of the work train at least between the application and metering device and the milling is arranged.

Core elements of this embodiment are therefore in particular in the use of dust protection mats and in the guide connection between the Fräsfahrzeug and the scattering vehicle. The dust protection mats can basically be designed in the manner already described above. However, it is important that in the present case the dust protection mats run between the application and metering device and the milling device at least between the two self-propelled vehicles, so the scattering vehicle and the milling vehicle. For this reason, or to the distance between the two vehicles in essence To keep constant, a guidance connection between the two vehicles is provided. Although this can be designed to be variable in length to a certain extent, it is preferably a rigid guide connection, such as a rod, which connects the rear of the preceding littering vehicle with the front of the trailing milling vehicle. On each side of these two vehicles, therefore, at least one dust protection mat is provided which is arranged at one end laterally of the scattering vehicle (in the lateral rear area) and at least in the working direction at the level of the application and metering device and not behind it. This dust protection mat extends on this side of the work train back to the milling vehicle at least up to the beginning of the milling device and is attached according to its rear end at least at the front of the milling vehicle.

All in all allows This structure of the work train thus, the gap in the work train between the order and metering device and the milling device to the sides demarcate the work train out so that, for example, laterally on the work train hitting winds etc. on the to be processed surface loose bulk material is not can blow more. The arranged on both sides of the work train dust cover thus in particular a kind of barrier against wind.

Preferably the dust mats are formed in several layers, at least in the foot area, wherein each layer comprises a plurality of individual segments, and wherein the one another adjacent individual segments in the different layers after Outside overlap. A multi-layered training seen from the side first has once an increased resistance the dust mats result. The segmentation of the individual layers also allows a particularly good adaptation of the dust mats to the underneath lying surface. The Dust protection mat is arranged in several side by side hanging Divided up lobes, which in their entirety form a continuous surface. Overrides the Arbeitszug example, uneven floors, this affects it always only on a rag, for example, by the bump is pushed to the side. The remainder of the dust protection mat is from the ground unevenness in this case, however, not affected or first then pushed to the side, when the respective rag passes over the ground unevenness. On this way can thus irregularities in the surface texture be particularly well balanced without the sealing effect the entirety of the dust protection mat is affected.

there The segmentation does not have to be over the entire height of the dust-proofing mat extend. Rather, the segmentation is preferred only substantially in the foot area, So to provide in the lower part of the dust protection mat. Thereby is the dust protection mat in her obe ren head area thus on the whole length the dust cover formed continuously. This way you can the dust protection effect of the dust protection mat is significantly increased become. Is the dust protection mat at least in the segmented area multi-layered, so at least two-ply, trained, especially Good dust protection results are achieved when the side overlap the work train towards adjacent tabs in the individual layers. On this way closes to the slotted area between two lobes to the side towards a continuous area of a flap in the adjacent position at. To the side is in the broadest sense, thus, a kind of labyrinth seal so that also no dust through the slot between two Rag can escape in one location.

A increased adaptability on movements of the work train arises when the dust mats at least partially bellows are formed. A bellows-like Training means below in particular that the dust mats at least partially almost zigzag-like, for example in the sense an accordion, runs. Such an arrangement may, for example, length changes, in particular at Cornering of the work train occur, especially well balanced.

It is also advantageous to provide holding means on the dust mats, formed in such a way that the dust mats in her foot area outward point. The holding means thus bend the hanging dust mats Seen in the direction of work laterally outward, ie from the side of Work train pointing away. In this way it is ensured that Do not shield the dust mats with their foot area Interior wise and example of a wheel of the scatter or Run over the milling vehicle become. Such holding means can besides, of course also for those mentioned at the beginning embodiments used with dust mats (for example, with buffer silo) become. The holding device must be at least in the Are formed so that it bends the foot area to the outside. Can do this for example webs or ribbons be embedded in the sides of the dust mats, the dust-proofing mat go through at least partially vertically. Alternatively it is possible to use bands or To arrange webs on the outside, the the foot area pull it slightly outwards or bend.

Is the order and metering device on Arranged silo or litter vehicle, it is particularly advantageous if between the silo or littering vehicle and the milling vehicle at least one horizontally arranged dust protection mat is present, which delimits the gap between the rear of the silo or littering vehicle and the front of the milling vehicle upwards. Dust protection mats are thus present in this embodiment between the two vehicles in such a way that they have the profile of an inverted US with respect to the working direction in cross section. So there are each a dust protection mat on the sides and a dust protection mat connecting these two dust mats in your head area, which is arranged substantially horizontally, before. For the sake of completeness, it is further noted that, in this embodiment, this dust protection mat composite can of course consist of a single or even of several individual segments.

Especially By the way, this area is special preferably formed bellows. In this embodiment So is the area between the two vehicles or at least between the application and metering device and the milling device Also covered at the top, so that also a dust release is counteracted upwards.

Also this work according to the invention (with Spreading vehicle) is thus characterized by a high versatility and flexibility low dust release. In addition, also allows this embodiment long working intervals, since the entrained amount of bulk material in the in the integrated silo and / or spreading vehicle is relatively large.

following the invention will continue with reference to the embodiments illustrated in the figures explains being functionally same Components provided with the same reference numerals. The clarity half are in the figures repeating components not in each figure individually. They show schematically:

1 : A side view of a work train in a first embodiment;

2 : a side view of the milling vehicle 1 ;

3 : a side-by-side overview of the storage container of the silo vehicle 1 ;

4 a side view of a work train in a second embodiment

5 a side view of a work train in a third embodiment; and

6 : A side view of a work train in a fourth embodiment.

The work train 1 according to 1 includes a self-propelled milling vehicle 2 and one in working direction A of the work train 1 in front of the milling vehicle 2 positioned self-propelled silo vehicle 3 , The silo vehicle 3 has a reservoir 4 for storing bulk material, which in the course of the work process on the surface to be machined 5 is applied.

2 illustrates the structure of the milling vehicle 2 , This includes a milling device 6 with a rotor equipped with cutting tools (not shown individually) 7 , which removes rotating material from the surface to be machined. The rotor 7 is with a hood 9 covered, which can be raised and lowered on the machine frame of the milling vehicle 2 is stored (in the figures is the Habue 9 shown in a lowered position). The milling device 2 also has a buffer silo 10 which, according to the 1 . 2 and 4 to 6 can be arranged on the milling vehicle in different ways and ways.

According to the 1 and 2 is the buffer silo 10 fixed to the machine frame in working direction A between a cab 11 and the milling device 6 of the milling vehicle 2 arranged. Alternatively, the buffer silo in the 4 and 5 executed in a variant that can be attached to and dismounted from the milling vehicle. This is a corresponding holding device 12 in the front area 8th on the milling vehicle 2 provided so that the buffer silo 10 in the embodiments of the work train 1 according to the 4 and 5 in working direction A between the silo vehicle 3 and the milling vehicle 2 or the milling device 6 is arranged. The holding device 12 is thus detachable, so that the buffer silo 10 from the milling vehicle 2 can be disconnected. The holding device 12 may also contain functional connections (not shown), via which, for example, a drive of elements of the buffer silo 10 or, as will be explained below, an application and metering device 13 through the milling vehicle 2 is possible.

The order and metering device 13 is in the embodiments of the work train 1 according to the 1 . 2 . 4 and 5 on the surface to be worked 5 facing the end of the buffer silo 10 arranged. The order and metering device 13 On the one hand, measures the quantity of bulk material to be applied (for example, depending on the time or distance traveled) and guides the bulk material to the surface 5 to or puts the bulk material on the surface 5 from. The execution form according to the 1 and 2 distinguishes itself with regard to the application and metering device 13 in particular characterized in that a direct connection between the order and metering device 13 and from the hood 9 surrounded work space around the milling rotor 7 is available. This is done by a trunk 14 achieved by the order and metering device 13 to the hood 9 runs and in the from the hood 9 surrounded working space opens. Drifts of bulk material are thus virtually eliminated in this embodiment, since the bulk material almost directly through the milling device 6 is incorporated into the worn underground material. The residence time of on the surface 5 deposited bulk material is thus particularly low in this embodiment.

Does the order and metering device not directly in the working space of the milling device 6 as in the embodiments of the 4 to 6 , are to prevent the formation of dust or to prevent the bleeding of on the surface 5 deposited bulk material dust protection mats 15 on the work train 1 arranged between the application and metering device 13 and in the working direction A beginning of the milling device on both sides of the work train 1 run (where in the figures only the left dust protection mat 15 is visible) and coming from the machine frame down to the surface 5 extend. The dust mats 15 are in her foot area 16 segmented and in her head area 17 continuously formed over the entire length. The segmentation is obtained by the dust-proofing mat from the foot area 16 coming in the direction of the head area 17 are slashed, leaving several lobes hanging down next to each other 25 to be obtained. The dust mats 15 are not stuck with the milling vehicle 2 but can be attached or removed as needed. Through the dust mats 15 thus becomes the area between the application and metering device 13 and the milling device 6 to the sides of the work train 1 shielded, so that for example lateral winds that on the surface 5 deposited bulk material can no longer blow away.

Are the order and metering device 13 and the milling device 6 not both at the same vehicle (in the 1 . 2 . 4 and 5 for example, on the milling vehicle 2 ), but on different vehicles, the dust mats can 15 also run between these two vehicles. This situation is going out 6 out. The order and metering device 13 is in this embodiment of the work train 1 on the silo vehicle 3 arranged (the silo vehicle thus takes over the metering and order function, so that it is referred to in this case as a scattering vehicle), the milling device 6 is on the milling vehicle 2 appropriate.

Between the two vehicles have the dust mats 15 therefore a horizontal part on (in 6 not visible), so that the space between both vehicles is also up from the dust mats 15 is demarcated. A Staubaustrag up in the space between the two vehicles is thus also prevented in this embodiment. The two vehicles 2 and 3 are also connected via a 27 ), which is a rigid rod (eg, similar to a tow bar), to achieve a substantially constant distance between the two vehicles. In this way it is also ensured that the running between two vehicles and on both vehicles respectively attached dust mats do not tear.

The buffer silo 10 has a comparatively small receiving volume for the bulk material. However, this is not a problem, because in the work train 1 moving silo vehicle 3 with respect to the capacity much larger reservoir 4 so that the total in the work train 1 entrained amount of bulk material is particularly large and long working intervals are possible. Between the storage tank 4 and the buffer silo 10 is arranged a pneumatic transport device, which is a refilling of the buffer silo 10 during operation of the work train 1 in working direction A allows. For this purpose, the pneumatic transport device includes, inter alia, a transport hose 18 through which the bulk material from the reservoir 4 to the buffer silo 19 is transported. The transport of the bulk material from the reservoir 4 in the buffer silo 10 However, not only pneumatically, but partly also mechanically.

The more detailed structure of the silo vehicle is in the schematic overview in 3 clarified. The bulk material 20 is in the storage container 4 stored and shipped with a mechanical transport device 21 (eg conveyor screw) from the storage container 4 in a metering device 22 promoted. Only in the metering device 22 becomes the bulk material 20 from one by means of a blower 23 produced gas stream, the metering 22 over a line 24 is supplied, detected and via the transport line 18 pneumatically to the buffer silo (in 2 not shown).

This embodiment thus comprises two different functionally connected in series transport devices, which together transport the bulk material 20 from the reservoir 4 take over to the buffer silo. With this special version of the silo vehicle 3 It is therefore not necessary, as in silo vehicles for pneumatic Filling usual to put the entire reservoir under pressure. This allows the silo vehicle 3 traveling in the work train 1 can be integrated and thus the work train 1 The total amount of bulk material carried in working mode is very large. The working intervals are very long.

So that the transport gas arriving in the buffer silo can escape from the buffer silo again, there is an exhaust air filter system 26 provided, which prevents bulk material dust from the buffer silo ( 10 ) is discharged through the escaping transport gas. For this purpose, the exhaust air filtration system ( 26 ) expediently firmly into the milling vehicle ( 2 ), although the buffer silo ( 10 ) is firmly integrated in the milling vehicle. This situation goes for example from the 1 and 2 out. Is the buffer silo ( 10 ) an attachment, which as needed with the milling vehicle ( 2 ) (situation according to 4 ), the exhaust air filtration system ( 26 ) is ideally integrated into the add-on element in order to prevent a bulk material dust discharge by the transport gas being removed.

An alternative to the pneumatic transport device is in the work train 1 in 5 shown in which the bulk material mechanically via a conveyor belt 19 from the reservoir 4 to the buffer silo 10 is transported.

Further differences of the individual embodiments of the work train ( 1 ) according to the 1 to 6 are also in the construction of the silo vehicle ( 3 ). This can, for example, according to the 1 and 5 a tractor and a uniaxial (drawn by this tractor 1 ) or two- or multi-axis ( 5 ) Include silo trailer. Alternatively, the silo vehicle ( 3 ) according to the 4 and 6 for example, be a two- or multi-axle tractor with a corresponding silo structure.

Claims (12)

Work train ( 1 ) for working on lanes, comprising a) a self-propelled milling vehicle ( 2 ) with a milling device ( 6 ); b) a working direction (A) of the work train (A) 1 ) in front of the milling vehicle ( 2 ) positioned self-propelled silo vehicle ( 3 ) with a storage container ( 4 ) for bulk goods ( 20 ), the silo vehicle ( 3 ) a mechanical transport device ( 21 ) used to convey the bulk material ( 20 ) from the reservoir ( 4 ) is trained; c) a buffer silo ( 10 ) with a metering and application device ( 13 ), the dosing and application device ( 13 ) in the way in the work train ( 1 ) is arranged to transport the bulk material ( 20 ) on the surface ( 5 ) of the roadway in working direction (A) of the work train ( 1 ) in front of the milling device ( 6 ) applies; and d) another transport device ( 19 ; 18 . 22 . 23 . 24 ) formed in such a way that it separates the bulk material ( 20 ) from the reservoir ( 4 ) of the silo vehicle ( 3 ) in the working mode of the work train ( 1 ) in the buffer silo ( 10 ). Work train ( 1 ) according to protection Claim 1, characterized in that the further transport means a pneumatic transport device ( 18 . 22 . 23 . 24 ). Work train ( 1 ) according to one of the preceding claims, characterized in that the buffer silo ( 10 ) on the milling vehicle ( 2 ) is arranged. Work train ( 1 ) according to protection claim 3, characterized in that a holding device ( 12 ) on the milling vehicle ( 2 ), which is for receiving the buffer silo formed as an attachment ( 10 ) is trained. Work train ( 1 ) according to one of the preceding claims, characterized in that the metering and application device ( 13 ) in the manner on the milling vehicle ( 2 ) is arranged to transport the bulk material ( 20 ) in working direction (A) of the work train ( 1 ) immediately in front of the milling device ( 6 ) on the surface ( 5 ) of the roadway. Work train ( 1 ) according to one of the preceding claims, characterized in that the milling device ( 6 ) at least partially from a hood covering a working space ( 9 ) and that the dosing and application device ( 13 ) in the from the hood ( 9 ) covered working space opens. Work train ( 1 ) according to one of the preceding claims, characterized in that dust mats ( 15 ) present between the applicator and metering device ( 13 ) and the milling device ( 6 ) to the sides of the work train ( 1 ) are arranged. Work train ( 1 ) for working on lanes, comprising a) a self-propelled milling vehicle ( 2 ) with a milling device ( 6 ); b) in the working direction (A) of the work train in front of the milling vehicle ( 2 ) positioned self-propelled silo vehicle ( 3 ) with an application and metering device ( 13 ), with a storage container ( 4 ) for bulk goods ( 20 ), and with a mechanical transport device ( 21 ) used to convey the bulk material ( 20 ) from the reservoir ( 4 ) to the application and metering device ( 13 ) is trained; c) a management connection ( 27 ) between the Milling vehicle ( 2 ) and the scatter vehicle ( 3 ); and d) dust mats ( 15 ) in the working direction (A) of the work train (A) 1 ) on both sides of the work train ( 1 ) at least between the application and metering device ( 13 ) and the milling device ( 6 ) is arranged. Work train ( 1 ) according to one of the claims 7 or 8, characterized in that the dust mats ( 15 ) at least in the footer ( 16 ) are formed in multiple layers, each layer comprises a plurality of individual segments ( 25 ), with those in the side of the work train ( 1 ) in the layers to each other adjacent individual segments ( 25 ) overlap each other outwards. Work train ( 1 ) according to one of the claims 7 to 9, characterized in that the dust mats ( 15 ) are formed at least partially bellows. Work train ( 1 ) according to one of the claims 7 to 10, characterized in that holding means are provided, which are formed in such a way that the dust mats ( 15 ) in her foot area ( 16 ) to the outside. Work train ( 1 ) according to one of the preceding claims, characterized in that between the silo vehicle ( 3 ) and the milling vehicle ( 2 ) at least one horizontally arranged dust protection mat ( 15 ), the space between the rear of the silo vehicle ( 3 ) and the front of the milling vehicle ( 2 ) delimits upward.