EP3845710A1 - Procédé de traitement du sol par enlèvement pourvu d'outil d'enlèvement incliné par rapport à la direction d'avancement et machine de traitement du sol conçue pour mettre en oeuvre ledit procédé - Google Patents

Procédé de traitement du sol par enlèvement pourvu d'outil d'enlèvement incliné par rapport à la direction d'avancement et machine de traitement du sol conçue pour mettre en oeuvre ledit procédé Download PDF

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Publication number
EP3845710A1
EP3845710A1 EP20214751.8A EP20214751A EP3845710A1 EP 3845710 A1 EP3845710 A1 EP 3845710A1 EP 20214751 A EP20214751 A EP 20214751A EP 3845710 A1 EP3845710 A1 EP 3845710A1
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EP
European Patent Office
Prior art keywords
machine
soil
axis
working
soil cultivation
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
EP20214751.8A
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German (de)
English (en)
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EP3845710B1 (fr
Inventor
Sebastian Winkels
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Wirtgen GmbH
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Wirtgen GmbH
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Publication date
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Publication of EP3845710A1 publication Critical patent/EP3845710A1/fr
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Publication of EP3845710B1 publication Critical patent/EP3845710B1/fr
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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
    • 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
    • E01C23/12—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 for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • E01C23/122—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 for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
    • E01C23/127—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 for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
    • 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
    • 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
    • E01C23/08—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 for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—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 for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
    • 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
    • E01C19/004—Devices for guiding or controlling the machines along a predetermined path

Definitions

  • the present invention relates to a soil cultivation method for removing soil material by means of a tool rotating about a working axis, the rotating tool being carried by a machine frame of a soil cultivation machine, the machine frame standing on a ground by a rolling chassis and relative to the ground by a propulsion drive device Ground is driven to a propulsion movement along a propulsion direction.
  • the forward movement of the soil cultivating machine ensures a forward movement of the rotating tool.
  • the present invention also relates to a soil cultivation machine, such as a road milling machine, recycler, stabilizer or surface miner, which is designed to carry out the above-mentioned soil cultivation method.
  • a soil cultivation machine such as a road milling machine, recycler, stabilizer or surface miner, which is designed to carry out the above-mentioned soil cultivation method.
  • the soil cultivation method mentioned at the beginning is sufficiently known from the prior art. It is used by soil cultivation machines, in particular in the form of road milling machines, recyclers, stabilizers or various surface miners, in order to remove soil material as intended.
  • soil cultivation machines in particular in the form of road milling machines, recyclers, stabilizers or various surface miners, in order to remove soil material as intended.
  • the known road milling machines travel straight ahead, their direction of advance, which is the direction of advance of the rotating tool, is orthogonal to the working axis of the tool.
  • the removal of soil material is mainly done by milling chisels which are arranged on the circumferential surface around the working axis.
  • the end faces of the rotating abrasive tool are subject to an above-average wear compared to the wear of the milling chisel-bearing outer surface. This is partly due to the fact that the end faces of the tool - in the case of the above-mentioned publications a milling drum as the tool - come into greater contact with the soil material to be removed or already removed than the lateral surface located between the end faces, which is caused by the milling chisels arranged on it is protected from contact with the floor material to a greater extent than the end faces.
  • the DE 10 2010 013 983 A1 consequently, also provide milling chisels on the face of a milling drum so that the area outside the tool or the milling drum axially adjacent to an end face is cleared of milling chisels.
  • the disadvantage of this solution is the high cost of manufacturing and assembling such a milling drum with milling chisels on the end face, which can be repeated during maintenance operations.
  • milling chisels On the one hand, additional milling chisels have to be attached to the milling drum, and on the other hand, a milling chisel is more difficult to install in a stable manner on the front side than on the outer surface, where - unlike on the front side - a relatively large surface area is available for each milling chisel.
  • the present invention solves this problem in the soil removing soil cultivation method mentioned at the outset in that the advance direction of the machine frame and thus a soil cultivation machine having the rotating tool and consequently the direction of advance of the rotating tool with the working axis during a soil excavation includes an angle different from 90 °.
  • This orientation of the working axis and thus of the rotating tool when removing soil material relative to the propulsion movement of the soil cultivating machine makes it possible to design a longitudinal end of the tool that is axial in relation to the working axis as a trailing longitudinal end in the advance direction, so that this trailing longitudinal end is essentially in the advance direction in the ablation shadow of the tool moves so that it moves during the intended soil cultivation of the tool within a volume area cleared by the abrasive cutting means of the rotating tool in the soil and thus does not come into contact with soil material or only to a very limited extent.
  • the end face of the trailing longitudinal end of the rotating tool is thus rotated away from the cutting edge generated by the tool in the processed soil by the same angle about which the advance direction is inclined with respect to a plane orthogonal to the working axis.
  • the soil material has little or no abrasive effect on the trailing longitudinal end.
  • the wear load on the trailing longitudinal end is therefore low, so that the arrangement of cutting means, such as milling chisels, on the end face of the tool can be dispensed with.
  • the soil-removing process can therefore be carried out with a conventional rotating tool without special protection of the trailing end face.
  • the tool which is adjusted relative to the advance direction as described above, has, in addition to a trailing longitudinal end, a leading longitudinal end for which the wear conditions are disadvantageously changed by the adjustment of the tool.
  • this is not a mandatory operating condition of the leading longitudinal end of the inserted tool, since the leading longitudinal end does not necessarily have to be in abrasive engagement with the soil to be worked.
  • the rotating tool extends between two axial longitudinal ends in relation to the working axis, the tool having a leading axial longitudinal end and a trailing axial longitudinal end due to the orientation of the working axis in the advance direction, with the axial removal width is selected such that the trailing longitudinal end is in abrasive engagement with the soil material to be removed, but the leading longitudinal end is not.
  • floor surfaces to be removed are wider than the removal width, even the maximum possible removal width of the rotating tool, so that in almost all processing cases a floor surface to be removed is removed in several parallel paths that are traversed one after the other. It is thus easily possible to arrange the leading longitudinal end for the second and each subsequent path to be removed on the already machined side of an already generated removal edge and to bring only a section of the rotating tool that is axial with respect to the working axis into removing engagement with the ground, which only the trailing longitudinal end contains.
  • the leading longitudinal end is out of engagement with the soil to be removed and the trailing longitudinal end is arranged at an angular distance away from the removal edge generated during the respective processing.
  • the inclined inclination of the working axis with respect to the advance direction of the soil cultivating machine reduces the maximum achievable removal width of the tool compared to abrasive soil cultivation in which the advance direction is oriented orthogonally to the working axis.
  • the percentage loss of the maximum achievable removal width corresponds to the value of 1 minus the cosine of the angle of attack by which the advance direction is inclined with respect to a plane orthogonal to the working axis.
  • the percentage loss of the maximum achievable removal width is less than 3.5% with an angle of incidence of 15 ° and slightly more than with an angle of incidence of 10 ° 1.5%.
  • the angle of attack is therefore preferably 15 ° or smaller, particularly preferably 10 ° or smaller.
  • the angle of attack is 5 ° or less, for example between 5 ° and 3 °, but greater than 0 °.
  • the angle of incidence is 5 ° or less, for example between 5 ° and 3 °, but greater than 0 °.
  • the loss of the maximum possible working width is less than 0.4%.
  • the losses in terms of the maximum possible working width that have been described are negligible.
  • the rotating tool can now be arranged with a working axis on the machine frame of the soil tillage machine, which is inclined by the angle of attack with respect to a reference plane that is spanned by a roll axis running parallel to the longitudinal direction of the machine frame and by a yaw axis of the soil tillage machine running parallel to the machine height direction. Then the soil cultivating machine can simply be moved straight along its rolling axis during erosive cultivation, with the trailing longitudinal end being arranged away from an erosion edge for structural reasons due to the inclined arrangement of the tool.
  • the chassis has a plurality of steerable drives that can roll on the ground, the soil cultivation method comprising steering the drives in such a way that the propulsion direction when the soil tillage machine travels straight ahead with a longitudinal direction parallel to the machine frame extending roll axis encloses an angle.
  • the working axis can then have a fixed angular orientation relative to the reference plane, preferably be orthogonal to this.
  • Soil tillage machines usually have drives that can be steered and unrolled on the ground anyway.
  • the first path of erosive tillage can be carried out conventionally without a working axis inclined to the driving direction, i.e. with a working axis orthogonal to the reference plane, with the driving direction of the tillage machine running parallel to the rolling axis during the first path, so that the driving direction of the tillage Machine and thus the feed direction of the rotating tool are oriented orthogonally to its working axis.
  • an abrasion edge is created as a boundary formation between the removed first path and the remaining ground surface that has not yet been removed but is still to be removed, so that the second and every further path through appropriate steering or steering adjustment of the drives with the working axis set to the direction of advance and consequently without Machining intervention of the leading longitudinal end of the tool can be carried out.
  • the longitudinal direction of the machine or the roll axis of the tillage machine deviates by the angle of incidence from the longitudinal direction of the subsoil to be worked, such as the paths to be removed. This can even apply to curved path courses of a path to be removed.
  • the roll axis of the tillage machine is generally oriented parallel to a local tangent to the curved path at the location of the tillage machine, according to the tillage method described here, the roll axis deviates angularly from the local tangent even with curved paths during tillage the curved path course at the respective processing location of the soil cultivation machine along the processing path, usually again by the angle of attack.
  • the present invention also relates to a mobile soil-removing soil cultivation machine, comprising a chassis which is designed to stand on a base and has a plurality of steerable ones that can be rolled on the base Running gear, the chassis supporting a machine frame which carries a working device with a soil-removing tool rotatable about a working axis, the working axis being arranged with a constant angular orientation relative to the above-mentioned reference plane, which consists of a roll axis running parallel to the longitudinal direction of the machine frame and a is spanned parallel to the machine height direction running yaw axis of the tillage machine.
  • the soil working machine has a working drive device to drive the tool to rotate about the working axis, and the soil working machine has a propulsion drive device to drive the soil working machine relative to the ground on which it stands for propulsive movement.
  • the soil working machine also has a steering device in order to change a steering angle of the plurality of steerable drives relative to the reference plane.
  • the present invention also achieves the object mentioned at the beginning in that the mobile soil cultivation machine is designed to carry out the erosive soil cultivation method, as described and developed above.
  • the mobile soil cultivation machine is designed to carry out the erosive soil cultivation method, as described and developed above.
  • the technical advantages that can be achieved by a soil working machine designed to carry out the soil working method described above reference is made to the explanations of the soil working method.
  • developments of the soil cultivation method disclosed in connection with the explanation of the soil cultivation machine according to the invention are also further developments of the soil cultivation method according to the invention.
  • the construction of the soil cultivation machine for carrying out the soil cultivation method according to the invention can be implemented by a control device of the soil cultivation machine.
  • the control device can comprise one or more integrated circuits and a data memory, for example in the form of an on-board computer or a programmable logic controller.
  • the control device can be designed to control the machine on the basis of an in the data memory the stored operating program to automatically control the execution of the soil cultivation method described above.
  • the control device can output control commands at least to the steering device.
  • a predetermined angle of attack can be stored in the data memory of the control device.
  • a plurality of different angles of attack are stored in the data memory in a respective assignment to at least one operating or working parameter, for example depending on a removal depth and / and on the advance speed and / and on the type of soil material to be removed, and depending on the processing parameters of the upcoming and / or to select a suitable angle of attack that has just been carried out.
  • the selection can also take place in an automated manner after the processing parameters required for this have been entered by the control device.
  • the soil cultivation machine is preferably designed to move straight ahead along a propulsion direction during a soil-removing working mode of the working device which, with a working plane running parallel to the yaw axis and containing the working axis, is 90 ° includes different angles.
  • the included angle is always the smallest of several recognizable angles included between the advance direction and the working plane.
  • the angle of attack described above which is the angle that the propulsion direction includes with the reference plane, is also the angle by which the two angles formed by a propulsion plane parallel to the yaw axis and running in the propulsion direction with the working plane differ from a right angle.
  • the smaller angle relevant here is reduced by the amount of the angle of attack compared to a right angle, the second existing larger angle between the propulsion plane and the working plane is increased by the amount of the angle of attack compared to a right angle.
  • the unrollable drives can have wheels as wheel drives and / or revolving chains as crawler drives. It is also a mixed arrangement of structurally different drives on one and the same tillage machine It is conceivable, for example, that drives of one type of construction consisting of wheel drives and crawler drives are arranged at the front longitudinal end and that drives of the other type of construction are arranged at the rear longitudinal end of the soil cultivating machine.
  • a larger range of possible tillage can be achieved, however, that the working axis is arranged orthogonally to the reference plane and that the steering device is designed to orient the plurality of steerable drives with a respective steering angle in such a way that the advance direction of the tillage machine when driving straight ahead makes an angle with the roll axis.
  • the angle included with the roll axis is the angle of attack described above.
  • the advantage is that by setting the steering device accordingly with a soil cultivating machine with a working axis orthogonal to the reference plane, both in a conventional manner with a propulsion direction orthogonal to the working axis, i.e. with an angle of incidence of 0 °, and in the special manner described here with a 0 ° deviating angle of incidence and thus can be worked with a trailing longitudinal end, so that the face of the trailing longitudinal end is angularly spaced by the angle of incidence from a generated cutting edge during a cutting soil cultivation when driving straight ahead and is thus arranged almost without contact.
  • a chassis axis of the soil cultivation machine is only formed by a single drive.
  • at least one running gear axis preferably at least two running gear axes, is formed by two running gears, which are located along the roll axis in an essentially common axial position, but on different sides of the reference plane.
  • at least two drives on a common chassis axis are connected to one another by a tie rod for joint steering movement. For example, it is possible to steer the tillage machine in compliance with the Ackermann condition.
  • the tie rod can be designed to be variable in length.
  • the lateral slip results from the fact that when the soil cultivation method according to the invention is carried out, the steering angle of drives on a chassis axis differs from 0 °, with the use of a tie rod ensuring that the steering angle of the drive on the inside of the curve is larger than the steering angle of the drive on the outside of the curve Drive. If an attempt is made to drive straight ahead with such a steering setting, lateral slip occurs on one and the same chassis axis due to the different steering angles in terms of magnitude.
  • the length variability of the tie rod can be achieved by a piston-cylinder arrangement, of which the piston is coupled to one drive and of which the cylinder is coupled to the other drive of the same chassis axis.
  • the piston-cylinder arrangement can be part of the tie rod or can overlap a separation point of a two-part, in particular telescopic, tie rod.
  • the tie rod can be designed to be variable in length by means of a spindle drive. This also requires an at least two-part tie rod, the two parts of which can be displaced relative to one another along the longitudinal direction of the tie rod.
  • transverse slip can also be reduced or completely avoided by connecting at least two bogies on a common chassis axis to one another by a tie rod for joint steering movement, with each longitudinal end of the tie rod being connected by a steering lever is connected to the respective other drive of the same chassis axis, wherein a steering lever is rotatable relative to the drive carrying it about a correction axis parallel to the yaw axis.
  • a steering lever that transmits a steering movement can be rotated around the correction axis relative to the carriage carrying it, so that it can also be ensured in this way that, despite the steering angle, both drives of a common chassis axis coupled by a tie rod have the same steering angle.
  • the amounts required for corrective movements for the respective angle of attack in the form of a change in length of a variable-length tie rod and / and in the form of a rotation of a steering lever about the correction axis are also preferably stored in the data memory of the control device.
  • the control device is preferably designed to control an actuator which brings about the respective corrective movement.
  • the angle of attack is generally small in terms of amount, in particular less than 15 ° or even less than 10 °, a small amount of transverse slip produced by this can also simply be accepted.
  • the machine frame is preferably supported on the chassis in a height-adjustable manner.
  • the removal depth of the tool can be set in a simple manner by shifting the height of the machine frame and thus the working axis usually fixed relative to the machine frame, that is to say the depth of the tool engagement in the removing soil.
  • individual or all bogies of the chassis are connected to the machine frame via lifting columns known per se, in order to achieve a height adjustability of the machine frame.
  • the tool is preferably a milling drum, which carries milling chisels at least on its circumferential surface which is radially spaced around the working axis.
  • at least a plurality of the milling cutters are arranged in a helical manner on the outer surface. Since the milling chisels are exposed to heavy wear and tear due to their engagement with usually mineral surfaces, such as road pavements, the milling chisels are preferably arranged in so-called chisel change holders on a milling drum tube as a base body of the milling drum in order to facilitate their replacement when their wear limit is reached.
  • the design of the soil cultivation machine to carry out the soil cultivation method described above does not, or does not necessarily mean, that the soil cultivation machine is only designed to carry out the soil cultivation method described above.
  • the soil tillage machine is also designed to move straight ahead along a propulsion direction that is orthogonal to the working plane during a soil-removing working mode of the working device.
  • the steering device is preferably also designed to orient the plurality of steerable drives with a respective steering angle in such a way that the propulsion direction of the tillage machine is parallel to the roll axis when driving straight ahead.
  • the soil tillage machine discussed here is preferably a road milling machine, in particular - but not only - a large road milling machine with a milling drum as the rotating tool, a recycler, a stabilizer or a surface miner, which is arranged between the drives of a front chassis axis and drives of a rear chassis axis.
  • a soil cultivation machine according to the invention (hereinafter referred to as “machine” for short) is generally designated 10.
  • a large road milling machine is shown as an example as the machine 10 according to the invention, the working device 12 of which is arranged between the front drives 16a and 16b and the rear drives 18a and 18b with a milling drum 14 known per se as a rotating tool that removes soil, as is typical for large road milling machines.
  • the drives 16a, 16b and 18a, 18b are designed, for example, as chain drives.
  • the drives 16a, 16b and 18a, 18b, each preferably drivable by a hydraulic motor HM for propulsive movement, together form a chassis 13, are steerable and carry a machine frame 20, which in turn carries the working device 12.
  • the machine 10 is thus a self-propelled vehicle.
  • the milling drum 14 that rotates orthogonal to the working axis R running parallel to the pitch axis Ni of the machine 10 is shielded from the outside environment of the machine 10 by a milling drum box 22 which supports the milling drum 14 so that it can rotate about the working axis R.
  • the milling drum box 22 is to the ground U, on which the machine 10 with the drives 16a, 16b and 18a, 18b stands up, and which the milling drum 14 removes, open in order to enable the intended soil cultivation of the machine 10.
  • the machine frame 20 is vertically adjustable along the yaw axis Gi via front lifting columns 17a and 17b and rear lifting columns 19a and 19b with the drives 16a, 16b, 18a and 18b, whereby, for example, the milling depth t of the milling drum 14 is adjustable.
  • the machine 10 can be controlled from a control stand 24.
  • the operator's platform 24 can be covered in a manner known per se.
  • An internal combustion engine 25 supplies the drive energy, among other things, for the hydraulic motors HM as the propulsion drive device of the machine 10, for the work drive device 54 (see Sect. Fig. 2 ) for the rotation of the milling drum 14, and for the steering device 56 (see Sect. Fig. 2 ) to steer the machine 10.
  • Soil material removed by the milling drum 14 during the intended soil cultivation is conveyed by a transport device 26 from the working device 12 to a delivery location 28, where in the example shown a transport truck accompanying the machine 10 during the soil cultivation at a distance in the direction of the roll axis Ro 30 is passed.
  • the roll axis Ro and the yaw axis Gi span one to the plane of the drawing Figure 1 parallel reference plane BE, which in Fig. 2 is shown and labeled.
  • the transport device 26 comprises a receiving belt 32, which is closer to the working device 12, and a discharge belt 34, which cooperates with the receiving belt 32 and is located further away from the working device 12.
  • the receiving belt 32 is rotatable, but is immovably mounted on the machine frame 20 with regard to its orientation relative to the machine frame 20 .
  • the receiving belt 32 transfers the material it has conveyed to the discharge belt 34, which conveys the material taken over to the discharge point 28.
  • the discharge belt 34 is also rotatable, but can be pivoted relative to the machine frame 20 about a pivot axis S parallel to the yaw axis and about a
  • the tilting axis orthogonal to the pivot axis S can be tilted so that the delivery location 28, which coincides with the dropping longitudinal end of the dropping belt 34, can be moved approximately on the surface of a spherical cap in order to adapt the delivery location 28 to the respective accompanying vehicle 30.
  • the transport device 26 is encased along its entire length by a housing 38 in order to prevent the external environment of the transport device 26 from being polluted by dust and by material that may fall from the transport device 26.
  • the part of the housing 38 located above the receiving belt 32 is largely realized by the machine frame 20.
  • the working device 12 comprises a suction device 40 with a filter device 42.
  • the suction device 40 sucks in dust-laden air at a suction location 46, which can be located, for example, above the receiving belt 34, and conveys the dust-polluted air in the specified order through a pre-filter 48 and through the filter device 42 to a blow-off location 50, which is either an outlet at Conveyor fan 44, which blows directly into the outside environment of the machine 10, or which can be an opening in the housing 38 above the discharge belt 34, through which the cleaned air is returned to the transport device 26, so that the cleaned air together with the removed soil material emerges at the discharge point 28 in the vicinity of the machine 10.
  • a suction location 46 which can be located, for example, above the receiving belt 34, and conveys the dust-polluted air in the specified order through a pre-filter 48 and through the filter device 42 to a blow-off location 50, which is either an outlet at Conveyor fan 44, which blows directly into the outside environment of the machine 10, or which can be an opening in the housing 38 above the discharge belt 34, through which the cleaned air
  • a filter body 52 is shown in the filter device 42, the longitudinal axis of which is oriented essentially parallel to the transport direction or to the direction of the discharge belt 34.
  • Figure 1 the machine 10 is shown during a conventional erosive soil cultivation, in which the advance direction VR of the machine 10 when traveling straight ahead in the plane of the drawing Figure 1 parallel reference plane is located.
  • the front chassis axis VF and the rear chassis axis HF are orthogonal to the plane of the drawing when driving straight ahead in conventional tillage operations Figure 1 oriented parallel reference plane.
  • the working axis R which is fixed relative to the machine frame 20, is structurally oriented in a fixed orthogonal manner to the reference plane.
  • a working plane AE containing the working axis R and parallel to the yaw axis Gi is shown in FIG Figure 1 therefore orthogonal to the plane of the drawing Figure 1 and thus oriented orthogonally to the reference plane.
  • a propulsion direction of the propulsion movement of the machine 10 consequently runs parallel to the roll axis Ro of the machine 10.
  • FIG 2 is the machine 10 of Figure 1 shown roughly schematically in plan view during processing in accordance with the soil cultivation method according to the invention described above.
  • the propulsion direction VR along which the machine 10 travels straight, runs inclined by an angle of attack ⁇ with respect to the reference plane BE.
  • the propulsion direction VR encloses an angle different from 90 ° with the working axis R or with the working plane AE spanned by the working axis R and the yaw axis Gi, whereby, according to the definition given above, the smallest angle ⁇ is that between the propulsion direction VR and the working axis R or the working plane AE detectable angle should be decisive.
  • the angle ⁇ between the advance direction VR and working plane AE is reduced by the amount of the angle of attack ⁇ .
  • the milling drum 14 thus has a leading longitudinal end 14a and a trailing longitudinal end 14b with respect to the advance direction VR.
  • FIG. 2 A subsurface area still to be processed is shown hatched with U1 and, to distinguish it, is an subsurface area that has already been processed designated with U2.
  • the processed subsurface U2 is delimited by the milling edge 58 formed by the milling drum 14 during the current milling process.
  • the working width AB in Figure 2 indicates the width over which soil is removed by the milling drum 14 during the soil-removing machining process.
  • the trailing longitudinal end 14b of the milling drum 14 is rotated away from the milling edge 58 by the same angle ⁇ by which the advance direction VR is inclined with respect to the reference plane BE.
  • the end face 14b1 at the trailing longitudinal end 14b of the milling drum 14 is significantly less abrasively stressed by the milling operation than in the conventional abrasive soil cultivation described above with a propulsion direction orthogonal to the working axis R.
  • leading longitudinal end 14a is not in abrasive engagement with the subsurface area U1 that is still to be processed, so that the leading longitudinal end 14a and its end face 14a1 are not subjected to abrasive loads except from the abraded soil material thrown around in the milling drum box 22.
  • the front bogies 16a and 16b of the front chassis axis VF and the rear bogies 18a and 18b of the rear chassis axis HF are, in general terms, aligned in the same direction and with the same amount of steering angle, in particular steering angles, with respect to the reference plane BE, in order to allow for the soil cultivation method presented here the direction of propulsion deviating from the roll axis VR to achieve the movement required.
  • the steering lock angle is the steering control angle entered into the steering device of a vehicle axle.
  • the steering angle is the angle resulting at the individual drives from the assigned steering angle, which the rolling plane of the drive, which is orthogonal to the rolling axis of the respective drive, includes with the reference plane.
  • the front tie rod 60 in a manner known per se for connecting two front steering levers 64a and 64b is arranged and the rear tie rod 62 is arranged in a manner known per se to connect two rear steering levers 66a and 66b, it is usually not possible without further measures, one and the same chassis axis on both drives despite uniform Steering angle to set the same steering angle. Therefore, without further measures, when driving straight ahead with the propulsion direction VR inclined to the reference plane BE, a certain transverse slip occurs, which, however, also only has a small amount with the usual small amounts of ⁇ and is therefore negligible.
  • variable-length tie rod as shown by way of example on the front tie rod 60, which is designed as a piston-cylinder unit 68 variable in length, or this can be achieved by the relative rotatability of a steering lever can be achieved relative to the steering axis of his drive assigned to him, as is indicated on the rear zero-side handlebar lever 66b, which is rotatable relative to its lifting column 19b about a correction axis K parallel to the yaw axis Gi.
  • the drives of the same chassis axis which are jointly steered via a trapezoidal steering linkage as described above, consisting of a steering lever per drive and a tie rod connecting the steering levers, also have steering angles of the same amount relative to the reference plane BE with respect to each other when using a uniform steering angle are aligned parallel.
  • each drive can also be steered via its own steering actuator independently of the steering status of each other drive.
  • a low-wear soil cultivation for the milling drum 14 at its longitudinal ends 14a and 14b is possible without any structural change or without any structural protective measure at the longitudinal ends, compared to conventional soil cultivation with the advance direction VR orthogonal to the working plane AE.
  • wear protection measures are not taken at the longitudinal ends of the milling drum, such as additional free-clearing milling bits and / and wear-resistant material thickenings. Due to the lower wear load achieved overall by the inclined setting of the milling drum 14, these then have an even greater wear protection effect.
  • the machine 10 preferably has a control device 70, for example comprising one or more integrated circuits and a data memory, which is designed to automatically control the machine 10 on the basis of an operating program stored in the data memory in order to carry out the soil cultivation method described above.
  • the control device 70 can output control commands, for example the target steering angle, to the steering device 56.
  • a predetermined angle of attack ⁇ can be stored in the data memory of the control device 70.
  • the control device 70 can be thought of storing a plurality of different angles of attack in a respective assignment to at least one operating or working parameter, for example depending on the removal depth t and / and on the advance speed and / and on the type of soil material to be removed, and the angle of attack depending on operating parameters to select which describe the tillage to be done.
  • the data for changing the length of a variable-length tie rod, such as the tie rod 60, or the data for the corrective rotation of a steering lever, such as the steering lever 66b, such that Drives of one and the same chassis axis, which are connected to one another via a trapezoidal steering linkage for common steering movement, are aligned parallel to one another despite the steering angle, can be stored in the data memory of the control device 70.
  • the control device therefore preferably also controls the compensation movement of the variable-length tie rod and / or the rotatable steering lever.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Road Repair (AREA)
  • Soil Working Implements (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP20214751.8A 2019-12-30 2020-12-16 Procédé de traitement du sol par enlèvement pourvu d'outil d'enlèvement incliné par rapport à la direction d'avancement et machine de traitement du sol conçue pour mettre en oeuvre ledit procédé Active EP3845710B1 (fr)

Applications Claiming Priority (1)

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DE102019135867.1A DE102019135867A1 (de) 2019-12-30 2019-12-30 Abtragendes Bodenbearbeitungsverfahren mit bezüglich der Vortriebsrichtung schräg angestelltem abtragendem Werkzeug und zur Ausführung des Verfahrens ausgebildete Bodenbearbeitungsmaschine

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EP3845710A1 true EP3845710A1 (fr) 2021-07-07
EP3845710B1 EP3845710B1 (fr) 2023-09-06

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US (2) US11802384B2 (fr)
EP (1) EP3845710B1 (fr)
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Publication number Priority date Publication date Assignee Title
US10589933B2 (en) * 2018-06-26 2020-03-17 Caterpillar Paving Products Inc. Flexible hopper for a conveyor system
US10583995B2 (en) * 2018-06-26 2020-03-10 Caterpillar Paving Products, Inc. Flexible hopper for a conveyor system
DE102021212736A1 (de) 2021-11-11 2023-05-11 Bomag Gmbh Verfahren zum betrieb einer selbstfahrenden bodenfräsmaschine sowie bodenfräsmaschine mit einer steuereinrichtung

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FR1266660A (fr) * 1960-06-03 1961-07-17 Machine pour l'entretien des routes
US3767264A (en) * 1971-11-17 1973-10-23 Greenside Machine Co Ltd Road working machines
WO2003100172A1 (fr) 2002-05-28 2003-12-04 Wirtgen Gmbh Unite et procede d'aspiration pour eliminer la poussiere sur des fraiseuses
DE102005035480A1 (de) 2005-07-26 2007-02-01 Cft Gmbh Compact Filter Technic Fräsmaschine für Straßenbeläge mit Entstaubung
EP2076419B1 (fr) 2006-09-29 2018-11-07 Volvo Construction Equipment AB Systeme de direction et de propulsion pour une fraiseuse routiere
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Also Published As

Publication number Publication date
US11802384B2 (en) 2023-10-31
DE102019135867A1 (de) 2021-07-01
CN113123205B (zh) 2023-06-06
EP3845710B1 (fr) 2023-09-06
US20240125060A1 (en) 2024-04-18
US20210198853A1 (en) 2021-07-01
CN113123205A (zh) 2021-07-16

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