EP3029200A1 - Engin automobile et procede de fonctionnement d'un engin automobile - Google Patents

Engin automobile et procede de fonctionnement d'un engin automobile Download PDF

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Publication number
EP3029200A1
EP3029200A1 EP15197375.7A EP15197375A EP3029200A1 EP 3029200 A1 EP3029200 A1 EP 3029200A1 EP 15197375 A EP15197375 A EP 15197375A EP 3029200 A1 EP3029200 A1 EP 3029200A1
Authority
EP
European Patent Office
Prior art keywords
machine frame
edge
height
edge protector
ground surface
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
EP15197375.7A
Other languages
German (de)
English (en)
Other versions
EP3029200B1 (fr
Inventor
Andreas Vogt
Hanjo Held
Christian Berning
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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Filing date
Publication date
Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP3029200A1 publication Critical patent/EP3029200A1/fr
Application granted granted Critical
Publication of EP3029200B1 publication Critical patent/EP3029200B1/fr
Active legal-status Critical Current
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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
    • E01C23/08—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
    • 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
    • E01C23/12—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
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for

Definitions

  • the invention relates to a self-propelled construction machine, in particular road milling machine, stabilizer, recycler or surface miner, with a machine frame and a work roll, wherein the work roll is arranged in a downwardly open roll housing, which is closed on both sides by an adjustable height edge protection , Moreover, the invention relates to a method for operating such a construction machine.
  • the above-mentioned construction machines have a rotating work roll for processing soil material, which may be a milling or cutting roll.
  • a rotating work roll for processing soil material which may be a milling or cutting roll.
  • work roll z For example, damaged road layers are removed, existing road surfaces are reconditioned, the terrain is prepared for road construction or minerals are mined.
  • the work roll of the known self-propelled construction machines is arranged in a downwardly open roll housing, which is closed by a working direction in front of the work roll arranged hold-down and a working direction behind the roller arranged scraper.
  • On the sides of the roller housing is closed by extending in the direction of direction signs, which are referred to as edge protection.
  • the edge protection of the known self-propelled construction machines is adjustable relative to the machine frame in height.
  • a lifting device for raising and / or lowering the edge protection is provided, which provides a floating position for the edge protection, in which the edge protection height changes of the machine frame with respect to the ground, for example, when changing the cutting depth of a road milling machine, or terrain bumps can follow.
  • the floating position of the edge protection of the lifting device is adjustable in height so that the edge protection due to its own weight of a lowered lowered position on the surface of the soil automatically and rests after hitting the ground surface with a predetermined contact force on the soil surface.
  • the edge protection is then pulled over the ground.
  • the edge protection can be additionally loaded or relieved of the lifting device with a predetermined force.
  • the lifting device for raising and / or lowering the edge protection can be operated by the operator to make the work roll accessible. During operation of the construction machine, however, the edge protection should always be lowered, so that the roller housing is closed laterally. Therefore, self-propelled construction machines have a circuit that does not allow the edge protection to be locked in the raised position during operation of the machine.
  • the problem is that the edge protection resting on the floor with the predetermined contact force digs into the ground during the advancement of the construction machine. This can not only lead to increased driving resistance and thus increased fuel consumption, but also to increased wear or deformation of the edge protection. If the edge protector digs deep into the ground, this can even lead to the complete stoppage of the construction machine.
  • a self-propelled construction machine which has a lifting device for raising and / or lowering the edge protection, which provides a floating mounting of the edge protection, is from the DE 10 2012 015 346 A1 known.
  • the lifting device is controlled by a control unit which is configured such that when falling below a predetermined value for the minimum distance between a reference point on the edge protection and the ground surface, the lifting device is switched from the floating position and the edge protection is raised. This effectively prevents the edge protector from digging into a loose floor.
  • the edge protector has a resilient sensing element for scanning the bottom surface, which is attached to the edge protection such that falls below a predetermined value for the minimum distance between Reference point and bottom surface of the probe element is deflected.
  • the known construction machine has proven itself in practice, the disadvantage is that the edge protection, an additional distance sensor is required, the resilient sensing element is exposed to mechanical stresses.
  • the invention is based on the object of reliably detecting relevant values for the control of the edge protection of a self-propelled construction machine without increased constructive effort.
  • the solution of this object is achieved according to the invention with the features of the independent claims.
  • the subject matters of the subclaims relate to preferred embodiments of the invention.
  • the invention is based on the object to control the edge protection of a self-propelled construction machine without wear-prone components so that there is no risk of digging the edge protection in a loose ground.
  • An object of the invention is also to enable a more user-friendly and ergonomic operation of the construction machine.
  • the self-propelled construction machine in particular road milling machine, stabilizer, recycler or surface miner, has a machine frame and a work roll equipped with working tools, which is arranged in a roll housing open at the bottom, which is closed on at least one side by an edge protection, the a lifting device relative to the machine frame in height is adjustable.
  • an edge protection is provided on both sides of the roller housing.
  • the edge protector is movable in a floating position relative to the machine frame in height so that it lowers from a raised position on the surface of the soil and rests after hitting the ground surface with a predetermined contact force on the soil surface, so that the edge protection during feed the construction machine is pulled over the ground and can follow changes in height of the ground surface relative to the machine frame.
  • the construction machine according to the invention is characterized by a unit for determining a reference value for the height of the surface of the floor relative to the machine frame, on which rests the edge protection.
  • a unit for determining a reference value for the height of the surface of the floor relative to the machine frame, on which rests the edge protection is irrelevant whether absolute or relative values are present for the height of the soil surface. Decisive is that the height of the ground surface with respect to the machine frame, i. H. any reference point or a reference line on or on the machine frame, is determined.
  • the unit for determining a reference value for the height of the ground surface has a device for determining the height of the edge protection in relation to the machine frame and the lowering speed of the edge protection.
  • a device for determining the height of the edge protection in relation to the machine frame and the lowering speed of the edge protection is irrelevant how the height of the edge protector and its lowering speed is determined.
  • one or more sensors may be provided. For example, from the time change of the height of the edge protection when lowering on the ground surface, the lowering speed can be calculated.
  • the construction machine has an evaluation unit which is configured such that the height of the edge protector relative to the machine frame is determined at the time when the lowering speed of the edge protector is less than a predetermined limit value for the lowering speed. If the lowering speed of the edge protector is smaller than the predetermined limit, it is concluded that the edge protector has hit the ground with its lower edge.
  • the lowering speed limit should be set so that impact of the edge protector can be reliably detected even if the edge protector sinks into a loose ground. Also in this case, the lowering speed when hitting the ground surface will be significantly lower than during the lowering to the ground.
  • the height of the ground surface relative to the machine frame then results from the height of the edge protector, which rests on the ground surface. If the height of the ground surface relative to the machine frame is known, the sinking of the edge protector into the ground can be detected. For this, the actual height of the edge protection is determined and compared with the height of the ground surface.
  • a preferred embodiment of the construction machine provides a unit for detecting the sinking of the edge protector into the ground, which is configured such that a control signal indicative of sinking of the edge protector is generated when the difference between the determined reference value for the height of the ground surface and the actual Height of the edge protection against the machine frame is greater than a predetermined limit for the sinking depth of the edge protection.
  • This preferred embodiment thus allows the determination of the sinking of the edge protection with the specification of a suitable limit value.
  • a particularly preferred embodiment provides a control unit for the lifting device which receives the control signal from the unit for detecting the sinking of the edge protection, wherein the control unit is configured such that the edge protection is raised when the control unit receives the control signal.
  • the control unit for the lifting device receives the control signal
  • the control unit switches the operation of the edge protection of the floating position in an operating state in which the edge protection is raised. This ensures that the edge protection can not sink further into the ground.
  • the edge protector is raised automatically so that it can lower itself to the ground again. As a result, the edge protection again reaches a defined position.
  • the edge protector is preferably raised by a predetermined distance, which is greater than the limit value for the sinking depth. This ensures that the lower edge of the edge protection is located above the terrain surface, so that the edge protection can automatically lower itself again on the terrain surface.
  • jerky movements of the edge protector are avoided in that the control unit is configured in such a way that the time duration in which the edge protector rests on the floor surface is detected.
  • the edge protection is only raised when the Control unit for the lifting device receives the control signal and the time is greater than a predetermined minimum period of time.
  • the automatic control of the edge protection has the decisive advantage that during operation of the construction machine it does not constantly observe the height of the edge protection and does not have to correct it. This is advantageous in that the height of the edge protector is difficult to assess from the control station and digging in of the edge protector is not always recognizable.
  • An additional distance sensor is not required in the construction machine according to the invention and the method for operating the construction machine according to the invention.
  • the sensor technology required for the invention is generally present anyway in the known construction machines. Since further, in particular mechanical components are not present, there is also no problem of damage or wear of these parts.
  • Another advantage is that the control according to the invention can be implemented in the control of a wide variety of machine types. The geometric dimensions of the machine play no role insofar as the edge protection after lifting in the floating position can always assume a defined position, d. H. automatically sinks to the terrain surface.
  • control unit is configured such that when lowering the edge protector, the maximum value of the lowering speed of the edge protector is determined, a predetermined percentage of the maximum value of the ascertained lowering speed of the edge protector being assumed to be the predefined limit value for the lowering speed.
  • the determination of the maximum speed can be a suitable Limit value for the lowering speed. Furthermore, it can be safely recognized when the edge protection jammed in his leadership.
  • the work roll In a construction machine whose machine frame is carried by a chassis having front or rear wheels or drives that can be raised or lowered relative to the machine frame, the work roll is generally disposed on the machine frame. Consequently, by raising and lowering the machine frame, the machining depth of the work roll, in particular the cutting depth of the milling drum of a road milling machine, can be adjusted. With the change in the milling depth, however, the height of the cat protection resting on the ground surface also changes relative to the machine frame. As a result, the determined reference value for the height of the soil surface is incorrect.
  • a further particularly preferred embodiment therefore provides that the unit for determining a reference value for the height of the ground surface is configured such that the reference value for the height of the ground surface is corrected by the distance to the machine frame relative to the ground surface by lifting the wheels or drives are lowered relative to the machine frame and / or raised by lowering the wheels or drives relative to the machine frame.
  • a correction of the reference value is not absolutely necessary, since the edge protection automatically returns to the ground surface when the depth of cut is reduced.
  • the control unit interprets this Lowering of the edge protector due to a reduction of the milling depth as a sinking of the edge protector into the ground, whereupon the control unit raises the edge protection again, so that a new reference value is determined.
  • the unnecessary raising or lowering of the edge protector to determine the new reference value can be prevented, however, that even in the case of lifting the machine frame to reduce the milling depth, a correction of the reference value is made.
  • the lifting device for raising the edge protector has at least one piston / cylinder arrangement, wherein the cylinder is pivotally connected to the machine frame and the piston hinged to the edge protection or the cylinder hinged to the edge protection and the piston hinged to the machine frame.
  • the device for determining the height and the lowering speed of the edge protector has at least one odometer which detects the position of the piston of the at least one piston / cylinder arrangement. By derivation of the path measuring signal of the odometer, the lowering speed of the edge protection can be determined, so that further sensors are not required.
  • Fig. 1 shows in side view an embodiment of a road milling machine, which is a small milling machine.
  • the road milling machine has a machine frame 1, which is supported by a chassis 2.
  • the chassis 2 has a front wheel 3A and two rear wheels 3B.
  • Only the right rear wheel 3B can be seen in working direction A.
  • the chassis can also have, for example, chain drives instead of wheels.
  • the milling machine has an in Fig. 1 unrecognizable work roll, which is a milling drum, which is arranged on the machine frame 1 in a Fräswalzengephaseuse 4. At the left and right in the working direction A, the milling drum housing 4 is closed by an edge protection 5. In Fig. 1 Only the right in the direction A edge protection 5 can be seen. Above the Fräswalzengephaseuses 4 is the control station 6 of the milling machine with the driver's seat 7 and the control panel 8.
  • the machine frame 1 of the milling machine is adjustable to lifting columns 10 relative to the surface 11 of the bottom 12 in height.
  • Fig. 2 shows a representation of the milling machine, wherein the rear right wheel 3B and the rear right lifting column 10 is not shown, so that the right edge protection 5 is exposed.
  • the left and right edge protectors 5 have the same structure.
  • the edge protector 5 is formed by a metal plate which extends in the working direction A and is adjustable between stops, not shown, with respect to the machine frame 1 in height.
  • the edge protection 5 is slightly oscillating between the stops ( Fig. 3 ).
  • the height adjustment of the edge protection 5 is carried out with a lifting device 13, which has a piston / cylinder arrangement 14, the cylinder 14A is pivotally mounted on the machine frame 1 and the piston 14 B articulated to the edge protection 5.
  • the piston / cylinder assembly 14 is of an in Fig. 3 not shown hydraulic unit operated. By retracting the piston 14B of the piston / cylinder arrangement 14, the edge protector 5 can be raised.
  • the control of the edge protection provides a floating position for the edge protection.
  • the edge protector 5 In the floating position, the edge protector 5 can lower from a raised position due to its weight force until the edge protector rests with its lower edge on the bottom surface 11. This movement is damped by the piston / cylinder arrangement 14, so that the edge protection 5 drops relatively slowly and does not fall abruptly to the ground.
  • the resting on the bottom surface edge protector 5 is mounted floating so that it is pulled over the bottom 12 resting on the floor surface 11 during advancement of the road milling machine with a predetermined contact force.
  • the edge protection can follow 5 bumps. As a result, the milling drum housing 4 remains always closed laterally.
  • This floating support of the edge protector belongs to the state of the art.
  • FIG. 4 shows a block diagram of the essential for the control of the lifting device 13 of the edge protector assemblies.
  • the FIGS. 5 to 8 show the individual positions that takes the edge protection 5.
  • the assemblies for the control of the lifting device 13 of the edge protection comprise a control unit 15 for controlling a hydraulic unit 16 for the lifting device 13 and a unit 17 for determining a reference value for the height of the ground surface 11 relative to the machine frame 1 and a unit 18 for detecting the sinking of Edge protection in the bottom 12.
  • the control unit 15 for controlling the hydraulic unit 16 for the lifting device 13 allows the raising of the edge protection and the release of the edge protection, so that the edge protection automatically drops, ie the switch to the floating position.
  • the unit 17 for determining the reference value for the relative height ⁇ H of the ground surface relative to the machine frame 1 has a device 17A for determining the height ⁇ h of the edge protector 5 relative to the machine frame 1 and for determining the lowering speed v of the edge protector and an evaluation unit 17B.
  • the unit for determining the relative height .DELTA.h of the edge protector and its lowering speed v has an integrated into the piston / cylinder assembly 14 odometer 19 which generates a Wegumblensignal indicating the relative height .DELTA.h of the edge protector relative to the machine frame 1.
  • the path signal is differentiated to determine a speed signal indicating the lowering speed v of the edge guard. These two signals are processed by the evaluation unit 17B.
  • the evaluation unit 17B consecutively stores the data for the relative height of the edge protector and the lowering speed in a memory unit 17C, in order from the data for the lowering speed v, the maximum lowering speed v max and from the maximum lowering speed of a predetermined percentage to calculate proportion v max, the is assumed to be a predetermined limit value for the lowering speed.
  • the percentage may for example be 50% of the maximum lowering speed v max .
  • the relative height ⁇ h of the edge protector 5 is the distance between any reference point and a reference line on the edge protector and any reference point or reference line on the machine frame 1
  • the relative height ⁇ H of the bottom surface 11 is Distance between the ground surface and any reference point or reference line on or on the machine frame 1.
  • the assemblies of the controller may include a data processing unit (microprocessor) on which runs a data processing program (software) so that the method steps described below are performed.
  • a data processing unit microprocessor
  • a data processing program software
  • the edge protection in the floating position rests on the ground surface, as in the Figures 1 and 2 such as Fig. 6 is shown.
  • the control unit 15 controls the hydraulic unit 16 of the lifting device 13 in such a way that the edge protection 5 is raised by a predetermined distance a, which may be, for example, between 5 and 10 cm.
  • the predetermined distance can be detected by a distance measuring system. If a position measuring system is not present, the edge protector 5 can also be raised, for example, for a predetermined time interval ⁇ t 1 , for example 250 ms, which corresponds to the predetermined distance a.
  • the edge protection is now in the raised position, the Fig. 5 shows. Then the edge protection is released, ie offset in the floating position, so that it drops to the bottom surface 11.
  • the data for the relative height .DELTA.h of the edge protector 5 with respect to the machine frame 1 and the value calculated from the temporal change in height lowering speed v are read at lowering of the edge protector in successive cycles continuously in the storage unit 17C [v 1 (t 1), v 2 (t 2 ), v 3 (t 3 ), ... v n (t n )].
  • the lowering speed determined in a subsequent cycle is in each case compared with the lowering speed determined in a preceding cycle, for example v 2 (t 2 ). If the lowering speed detected in the subsequent cycle is greater than the lowering speed determined in the preceding cycle, the subsequent lowering speed is stored as the maximum lowering speed v max in the storage unit. From the maximum lowering speed, the limit value for the lowering speed is calculated, for example a percentage of the maximum lowering speed v max which is also stored. During each cycle, the currently measured lowering speed is compared with the determined lowering speed limit read out of the storage unit.
  • Fig. 6 shows the edge protection 5 in the floating position, the edge protection 5 rests on the bottom surface 11. If the edge protector should penetrate the floor 12 due to a loose or soft ground, the height of the edge protector changes with respect to the height of the floor.
  • Fig. 7 shows the edge protector 5, the lower edge 5A is below the terrain surface 11.
  • the penetration depth b of the edge protector 5, ie the height difference b, is recognized by the unit 18 for detecting the sinking of the edge protector.
  • This unit 18 generates a control signal indicative of the sinking of the edge protector when the difference between the previously determined reference value for the relative height of the ground surface and the continuously determined actual relative height of the edge protector is greater than a predetermined limit value for the sinking depth b of the edge protector.
  • the control signal is generated, for example, when the lower edge 5A of the edge protector 5 lies in a range of, for example, 1 to 2 cm below the terrain surface 11.
  • the control unit 15 When the control unit 15 receives the control signal, this controls the hydraulic unit 16 of the lifting device 13 such that the edge protector 5 is raised by a predetermined distance c or for a predetermined time interval ⁇ t 2 , so that the lower edge 5A of the edge protector 5 again above the terrain surface 11 is located.
  • Fig. 8 shows the edge protector 5 in the raised by the predetermined distance c position in which the lower edge 5A at a distance d above the terrain surface 11 is located.
  • the predetermined distance c, by which the edge protection 5 is raised, is greater than the sinking depth b.
  • the control unit 15 then releases the edge protection 5 again, ie the edge protection returns to the floating position, so that the edge protection drops back to the floor 12 (FIG. Fig. 6 ).
  • the process steps described above are carried out continuously during the advancement of the road milling machine. If the edge protector 5 should sink again into the ground 12, this will be recognized again. Then the edge protection 5 becomes again raised, so that the edge protection can lower itself to the ground again. This ensures that the edge protection 5 can not dig into the ground 12.
  • the distance a or the time interval .DELTA.t 1 is preferably equal to the distance c or the time interval .DELTA.t 2 , ie the edge protection is always raised in indefinite periods depending on the nature of the soil during operation of the construction machine by the same amount.
  • the control unit 15 is further configured such that the time period is detected in which the edge protection 5 rests in the floating position on the ground surface.
  • the control unit 15 receives the control signal, it raises the edge guard 5 only when the predetermined period of time ⁇ t, which can be, for example, between 2 and 4 seconds, is exceeded, so that the edge guard is not constantly moved.
  • the raising of the edge protection can also be carried out distance-dependent, whereby the distance is detected, which covers the resting on the ground edge protection, which is located in the floating position.
  • the edge protection is raised by the control unit after receiving the control signal only when a predetermined distance, for example 1 to 3m, is exceeded.
  • the ground surface height reference value determining unit 17 corrects the reference value determined for the previously set milling depth by the amount by which the machine frame 1 has been lowered from the ground surface 11 and the milling depth has been increased. To determine the corrected reference value, the difference between the previously determined reference value and the value by which the machine frame 1 has been lowered or the milling depth has been increased is calculated.
  • This corrected reference value is then used as the basis for the further control of the edge protection.
  • a correction of the reference value takes place in an analogous manner.
  • the determination of a single reference value for the height ( ⁇ H) of the ground surface (11) relative to the machine frame (1) is basically sufficient.
  • This reference value can be used as the basis for the control.
  • a new reference value will only be determined if the edge protector sinks into the ground and is raised again.
  • the control unit (15) for the lifting device (13) is configured such that regardless of the sinking of the edge protection in the ground after a predetermined time interval or covering a predetermined distance, the edge protection is gradually increased depending on time or distance, so that the edge protection can lower again to the ground surface.

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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)
EP15197375.7A 2014-12-04 2015-12-01 Engin automobile et procede de fonctionnement d'un engin automobile Active EP3029200B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014017892.7A DE102014017892B4 (de) 2014-12-04 2014-12-04 Selbstfahrende Baumaschine und Verfahren zum Betreiben einer selbstfahrenden Baumaschine

Publications (2)

Publication Number Publication Date
EP3029200A1 true EP3029200A1 (fr) 2016-06-08
EP3029200B1 EP3029200B1 (fr) 2017-03-29

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EP15197375.7A Active EP3029200B1 (fr) 2014-12-04 2015-12-01 Engin automobile et procede de fonctionnement d'un engin automobile

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US (2) US9995009B2 (fr)
EP (1) EP3029200B1 (fr)
JP (1) JP6623047B2 (fr)
CN (2) CN205874933U (fr)
DE (1) DE102014017892B4 (fr)

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US10151071B1 (en) * 2017-06-13 2018-12-11 Caterpillar Paving Products Inc. Anti-slab height control system for a cold planer
DE102018010151A1 (de) 2018-12-28 2020-07-02 Bomag Gmbh Verfahren zur Höhenregulierung eines Seitenschilds einer Bodenfräsmaschine und Bodenfräsmaschine
CN110258270B (zh) * 2019-06-19 2021-03-23 山推工程机械股份有限公司 一种铣刨机的控制方法、控制系统及铣刨机
DE102019127745A1 (de) * 2019-10-15 2021-04-15 Wirtgen Gmbh Selbstfahrende Baumaschine
US11692320B2 (en) * 2020-08-04 2023-07-04 Caterpillar Paving Products Inc. Milling machine chamber binding control systems and methods
US20220186447A1 (en) * 2020-12-15 2022-06-16 Caterpillar Paving Products Inc. Milling Machine with Adjustable Rotor Enclosure

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EP2574697A1 (fr) * 2011-09-30 2013-04-03 BOMAG GmbH Agencement d'écran latéral pour un dispositif de fraisage, utilisation d'un agencement d'écran latéral et dispositif de fraisage doté d'un agencement d'écran latéral
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DE102014017892B4 (de) 2019-03-21
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US9995009B2 (en) 2018-06-12
CN105672104A (zh) 2016-06-15
CN205874933U (zh) 2017-01-11
EP3029200B1 (fr) 2017-03-29
US10626563B2 (en) 2020-04-21
CN105672104B (zh) 2018-03-09
US20160160455A1 (en) 2016-06-09
US20180340303A1 (en) 2018-11-29
DE102014017892A1 (de) 2016-06-09

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