EP2735650A1 - Procédé de traitement de couches et son engin auxiliaire de construction - Google Patents

Procédé de traitement de couches et son engin auxiliaire de construction Download PDF

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Publication number
EP2735650A1
EP2735650A1 EP13189033.7A EP13189033A EP2735650A1 EP 2735650 A1 EP2735650 A1 EP 2735650A1 EP 13189033 A EP13189033 A EP 13189033A EP 2735650 A1 EP2735650 A1 EP 2735650A1
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EP
European Patent Office
Prior art keywords
milling
binder
amount
mixing
milled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13189033.7A
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German (de)
English (en)
Other versions
EP2735650B2 (fr
EP2735650B1 (fr
Inventor
Christioph Menzenbach
Marc Ridder
Cyrus Barimani
Günter HÄHN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wirtgen GmbH
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Wirtgen GmbH
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Publication date
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Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH
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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
    • 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
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving

Definitions

  • the invention relates to a method for treating layers, and to a construction machine or cultivation machine, in particular a soil stabilizer or recycler, according to the preamble of claim 1, 8 or 9.
  • Layers are understood to mean asphalt layers, such as the top layer or base layer of a traffic area, unbound rock layers and soils.
  • Such construction machines are used for material processing, namely z.
  • the stabilization of insufficiently viable soil the pulverization of asphalt blankets to the recycling, or solidification of bound or unbound layers needed.
  • Known stabilizer or recycler have a roller housing in which a milling / mixing roller is arranged, as well as a unit for dispensing and dosing of soil stabilizer.
  • the circulating in a mixing chamber milling / mixing roller is arranged to adjust to the surface to be machined usually height and tilt adjustable.
  • Such machines are often used for soil stabilization.
  • pulverulent binders for example lime or cement, water and / or additives
  • Typical applications for soil stabilization are the construction of roads or railway tracks as well as industrial areas.
  • Cement can also be added as a suspension (dissolved in water) for dust-free addition.
  • this method is only applicable if additional water is to be introduced into the soil. For soils with already too high water content, this method is not suitable.
  • bitumen, bituminous solutions or additives are used to increase the load bearing capacity of soils.
  • these binders e.g. bituminous solutions, foam bitumen or suspensions and / or additives and / or water are mixed in the stabilization process with the milled material.
  • the amount of binder to be mixed results from site-specific requirements and is usually given in percent by weight in relation to the milled material to be treated (for example, 1% admixture of binder corresponds to 10 kg of binder per t of milled material).
  • the metering of the binders takes place in the prior art via a metering device which adapts the actual amount of binder introduced to the current operating state of the machine. For this purpose, the amount of material being milled is recorded per unit of time during operation on the basis of the milling width, milling depth and feed rate. Based on this value can then be done the dosage of the binder.
  • a weight-dependent dosage of the binder takes place on the basis of a measurement of the volume flow and on the basis of the known density of the binder.
  • the metering width is set for the binder and the determination of the milled Fräsgutmenge, which is to be mixed with binder, is not based on the milling width, but based on the set activated dosing.
  • a disadvantage of the prior art is that for the piecing process of the milling / mixing roller at the beginning of processing no proportionally metered admixture of the binder can take place.
  • the pumps used in the prior art for the promotion of the binder are not adjustable from a value 0 to a desired flow rate. Therefore, as a rule, there can be no continuous increase in the delivery rate in the course of the piecing process.
  • the object of the invention is therefore to provide a method for consolidating layers or a construction machine, which make it possible to avoid the need for post-processing of the work result.
  • the invention advantageously provides that, during the piecing process, the determination of at least the amount of binder currently to be fed is carried out until the predetermined milling depth has been reached, depending essentially on the amount of milled material currently being milled in the mixing chamber.
  • This has the advantage that the predetermined mixing ratio between binder and milled material can be substantially maintained even in the preparation phase and a homogeneous soil consolidation in the entire machined area can be achieved.
  • binder is to be understood as meaning binders, as well as water and / or additives.
  • the amount of milled material currently in the mixing chamber is determined at least as a function of the current milling depth of the milling / mixing roller.
  • the amount of material currently in the mixing chamber is determined at least as a function of the current penetration speed of the milling / mixing roller in the layer.
  • the change in the cutting depth is measured, in order to conclude on the changing amount of milled material in the mixing chamber.
  • the determination of the amount of milled material located in the mixing chamber is determined by the measurement of the milling depth and in dependence on the radius and the width of the milling / mixing roller or dosing width.
  • the metering width of the milling / mixing roller is the part that is engaged with the not yet treated layer.
  • a metering device for example in the form of a metering strip with a plurality of injection nozzles arranged side by side, is switched on only in the area of the metering width.
  • the change in the milling depth can be used to calculate the change in the quantity of binders currently to be supplied.
  • the change in the milling depth is due to the penetration rate.
  • the amount of milled material currently present in the mixing chamber is calculated.
  • the integrated amount of binder added should be proportional to the integrated amount of milled material in the mixing chamber.
  • the injection of binder is started, or that if a sufficient amount of milled material is present in the mixing space, a continuous injection with variable flow rate of binder is started.
  • the depth of cut can be determined at a specific time; This milling depth can, due to the given geometry of the milling drum, be assigned to the volume existing at the time in the mixing chamber.
  • the current milling depth can be measured directly.
  • control of the amount of binder can be carried out in a conventional manner depending on the milling width, the predetermined cutting depth and the current feed rate with the known from the prior art method.
  • a construction machine in which the control device controls the currently supplied amount of binder before reaching the predetermined milling depth depending on the currently located in the mixing chamber amount of milled material.
  • control device determines the amount of material currently in the mixing chamber at least as a function of the penetration rate of the milling / mixing roller in the soil layer and controls the dosage of the binder proportionally.
  • the density values of different layers to be processed and the binder to be used are stored in a database of the controller or the control device.
  • Fig. 1 shows a schematic representation of the essential components of a self-propelled stabilizer or Recyclers.
  • the construction machine has a machine frame 1, which is supported by a chassis.
  • the chassis has two front wheels 4 in the working direction 9 and two rear wheels 3 in the working direction, which are attached to the front and rear lifting columns 6.5.
  • the front and rear lifting columns 6.5 which can each be operated independently of each other, are in turn attached to the machine frame 1, so that the machine frame relative to the bottom layer 2 can be adjusted in height.
  • wheels 3,4 and drives such as track drives can be provided.
  • Fig. 1 shows the machine for working lanes with a chassis supported by a machine frame 1 and consisting of a cab 20 control station.
  • the trolleys have at the front and rear ends of the machine frame 1, two jointly or optionally individually steerable suspension axles, in which each wheel is provided with its own hydraulic drive in the form of a hydraulic motor and may optionally be controlled separately.
  • Each wheel is provided with a height adjustment 5.6, so that the height of the machine frame 1 and, if necessary, whose inclination is set exactly at working or transport height.
  • a roller housing 7 is fixed, which limits a serving as a mixing chamber 10 working space of a rotating milling / mixing roller 8.
  • Fig. 2 schematically shows the milling / mixing roller 8 with the surrounding mixing chamber 10 under the roller housing 7.
  • the milling / mixing roller 8 is in Fig. 2 shown in continuous operation in which the dosage of the binder by means of a metering device 16 is carried out in a conventional manner, namely as a function of the propelling speed. Shown is therefore the situation in which the milling drum 8 is already in the predetermined milling depth FT.
  • Fig. 3a shows a surface to be machined in plan view, in which the construction machine has machined the layer 2 in a plurality of parallel mutually parallel milling tracks, because the milling width FB of the milling / mixing roller 8 is less than the width of the surface to be machined. This results in both working direction 9 and transversely thereto several Ansetzbecke 22 in which the milling / mixing roller 8 has been lowered from its rest position to the desired depth of cut FT.
  • Fig. 4a shows the cutting circle 15 with the radius r of the milling / mixing roller 8 during the piecing process, in which the milling / mixing roller 8 is first lowered to the predetermined milling depth FT. During the piecing process, preferably no movement of the construction machine in the advancing direction 9 takes place.
  • the amount of material to be milled per unit of time must also be included in the calculation of the amount of material to be milled in the mixing space 10, which amount of material additionally enters the mixing space 10 due to the speed of advance.
  • A denotes the cross-sectional area of the circular section currently located in the layer 2, which is defined by the milling depth FT and the diameter of the milling / mixing roller 8, d. H. the radius r of the cutting circle 15 is predetermined.
  • the volume can be calculated from the product of milling width FB (or metering width FB ') and cross-sectional area A.
  • the binder dosage is not constant and must be constantly adjusted depending on the milling depth.
  • V / t the milled volume per unit time
  • D the density of the milled material.
  • V / t FT * FB * v
  • the metering device 16 with the aid of which the binder is supplied, is controlled by a control device 14.
  • the control device 14 may be part of a machine control 12, with which the travel drive of the construction machine and the drive of the milling / mixing roller 8 is controlled.
  • the density values D of different layers 2 to be processed and the binders to be used are preferably stored in a database 18 of the controller 12 or the controller 14.
  • Fig. 4b it may happen that the milling / mixing roller 8 overlaps with an already milled milling track, so that the milling / mixing roller 8 is only partially engaged with a not yet treated layer 2.
  • the injection nozzles 24 of the metering device 16 are activated, but only those injection nozzles 24 which are located within the active metering width FB 'of the milling / mixing roller 8.
  • the consideration of the active metering width FB ' allows a correct metering of the binder, even in the case of overlapping milling tracks.
  • the milling width FB in the formulas can be replaced by the effective metering width FB 'to correctly calculate the amount of binder.
  • the pump When activated, the pump has a minimum delivery of binder of a volume equal to 20 kg.
  • variable flow rate binders can begin.
  • the continuous introduction of the binder can be effected as a function of the feed rate v according to the method known from the prior art.
  • cultivators can use the described method. These are not self-propelled attachments that are moved by a tractor, for example.
  • An example of such an attachment stabilizer is the Wirtgen WS 250 machine.
  • the dosage of the binder such as a suspension, not by the stabilizer itself, but z. B. by an anticipated suspension mixing plant, as it is known for example as Wirtgen suspension mixing plant WM 1000.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Road Repair (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Accessories For Mixers (AREA)
EP13189033.7A 2012-11-27 2013-10-17 Procédé de traitement de couches, un engin de construction et un engin auxiliaire de construction Active EP2735650B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210221654 DE102012221654A1 (de) 2012-11-27 2012-11-27 Verfahren zum Behandeln von Schichten, sowie eine Baumaschine, insbesondere einen Bodenstabilisierer oder Recycler

Publications (3)

Publication Number Publication Date
EP2735650A1 true EP2735650A1 (fr) 2014-05-28
EP2735650B1 EP2735650B1 (fr) 2015-04-01
EP2735650B2 EP2735650B2 (fr) 2018-09-26

Family

ID=49447383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13189033.7A Active EP2735650B2 (fr) 2012-11-27 2013-10-17 Procédé de traitement de couches, un engin de construction et un engin auxiliaire de construction

Country Status (4)

Country Link
US (1) US8956076B2 (fr)
EP (1) EP2735650B2 (fr)
CN (1) CN103835211B (fr)
DE (1) DE102012221654A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104563174A (zh) * 2013-10-25 2015-04-29 卡特彼勒路面机械公司 基于地层特征的铣削机器控制
CN106868994A (zh) * 2017-03-07 2017-06-20 中交公局第六工程有限公司 一种水泥稳定土连续拌合的方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011115325A1 (de) * 2011-10-07 2013-04-11 Bomag Gmbh Rotorgehäuse für eine Fräsvorrichtung zur Bodenbearbeitung, Fräsvorrichtung und Verfahren zur Reinigung eines Rotorgehäuses
GB201409901D0 (en) * 2014-06-04 2014-07-16 Pro Tech Maintenance Ltd Drain remediation
US20160258119A1 (en) * 2015-03-03 2016-09-08 Caterpillar Inc. Automatic Rotor Speed Control
US20150376847A1 (en) * 2015-09-04 2015-12-31 Caterpillar Paving Products Inc. Additive mixing and delivery system for rotary mixers
MD4494C1 (ro) * 2016-03-04 2018-01-31 Geoteh Nova О.О.О. Echipament şi procedeu de stabilizare a solului
US10407848B2 (en) 2016-08-02 2019-09-10 Caterpillar Paving Products Inc. System and method for controlling proportion of liquid in substrate material worked by machine
US10407841B2 (en) 2017-10-25 2019-09-10 Caterpillar Paving Products Inc. Rotary mixing system
JP6952010B2 (ja) * 2018-04-27 2021-10-20 大成ロテック株式会社 舗装装置
JP6952009B2 (ja) * 2018-04-27 2021-10-20 大成ロテック株式会社 路盤改良工法
US10370802B1 (en) 2018-06-27 2019-08-06 Caterpillar Paving Products Inc. Automatic water spray milling for cold planer
US11981853B2 (en) * 2021-05-11 2024-05-14 Saudi Arabian Oil Company Chemical polymer deep soil stabilization columns and sand columns
CN116516780B (zh) * 2023-06-01 2024-02-06 徐州锐马重工机械有限公司 旧水泥混凝土路面就地再生集料系统

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EP0960239A1 (fr) * 1997-02-08 1999-12-01 WIRTGEN GmbH Dispositif pour realiser le revetement des chaussees et dispositif pour produire du bitume cellulaire
WO2002101149A1 (fr) * 2001-06-07 2002-12-19 Kmc Enterprises, Inc. Procede d'amelioration de routes en gravier et/ou en terre et revetement de route composite obtenu selon ce procede
DE102010014904A1 (de) * 2010-04-14 2011-10-20 Bomag Gmbh Einsprüheinrichtung für eine Baumaschine und Verfahren zum Betrieb einer Einsprüheinrichtung

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DE102010035129A1 (de) 2010-08-23 2012-02-23 Bomag Gmbh Einsprüheinrichtung für eine Baumascine zur Bodenbearbeitung, Baumaschine mit einer Einsprüheinrichtung und Verfahren zum Betrieb einer Einsprüheinrichtung

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0960239A1 (fr) * 1997-02-08 1999-12-01 WIRTGEN GmbH Dispositif pour realiser le revetement des chaussees et dispositif pour produire du bitume cellulaire
WO2002101149A1 (fr) * 2001-06-07 2002-12-19 Kmc Enterprises, Inc. Procede d'amelioration de routes en gravier et/ou en terre et revetement de route composite obtenu selon ce procede
DE102010014904A1 (de) * 2010-04-14 2011-10-20 Bomag Gmbh Einsprüheinrichtung für eine Baumaschine und Verfahren zum Betrieb einer Einsprüheinrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104563174A (zh) * 2013-10-25 2015-04-29 卡特彼勒路面机械公司 基于地层特征的铣削机器控制
CN106868994A (zh) * 2017-03-07 2017-06-20 中交公局第六工程有限公司 一种水泥稳定土连续拌合的方法

Also Published As

Publication number Publication date
EP2735650B2 (fr) 2018-09-26
DE102012221654A1 (de) 2014-05-28
CN103835211B (zh) 2016-03-16
CN103835211A (zh) 2014-06-04
EP2735650B1 (fr) 2015-04-01
US20140147206A1 (en) 2014-05-29
US8956076B2 (en) 2015-02-17

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