Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 1 of 11 PageID #: 10518
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`Exhibit C
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`

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`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 2 of 11 PageID #: 10519
`Case 1:17-cv-00770-JDW-MPT Document oilee |
`TT
`
`
`US007530641B2
`
`US 7,530,641 B2
`(10) Patent No.:
`a2) United States Patent
`Berningetal.
`(45) Date of Patent:
`May12, 2009
`
`
`(54) AUTOMOTIVE CONSTRUCTION MACHINE,
`AS WELL AS METHOD FOR WORKING
`GROUND SURFACES
`
`(75)
`
`Simons, Buchholz
`
`(DE
`
`Inventors: Christian Berning, Zuelpich (DE);
`gerber pange. Dh) (DE); Dieter
`(73) Assignee: Wirtgen GmbH, Windhagen (DE)
`(*) Notice:
`Subject to any disclaimer, the term ofthis
`patent is extended or adjusted under 35
`US.C. 154(b) by 162 days.
`
`(21) Appl. No.: 11/802,277
`
`(22)
`
`Filed:
`
`May 22, 2007
`
`(65)
`
`(30)
`
`Prior Publication Data
`US 2007/0286678 Al
`Dec. 13, 2007
`
`Foreign Application Priority Data
`
`May 22, 2006
`
`(DE) sess 10 2006 024 123
`
`(51)
`
`Int. CL.
`;
`(2006.01)
`EOIC 23/088
`(52) US. CL veoseneeeeeneecnetneneeeneeneaennnet 299/15; 404/84.05
`(58) Field of Classification Search 0.000.000... 299/1 OS,
`299/1.4, 1.5; 404/84.05
`See applicationfile for complete search history.
`References Cited
`U.S. PATENT DOCUMENTS
`
`(56)
`
`4,943,119 A *
`7/1990 Zarniko et alo... 299/1.5
`
`5,607,205 A *
`we 299/15
`3/1997 Burdick etal. .....
`5,984,420 A *
`[1/1999 Murray etal. oe. 299/1.5
`6,050,743 A
`4/2000 Medinger
`6,152,648 A *
`11/2000 Gfroerer etal. o...... 299/1.5
`FOREIGN PATENT DOCUMENTS
`30 07 124 Al
`DE
`9/1981
`wo9solos Al
`oon
`wo
`* cited by examiner
`
`Primary Examiner—John Kreck
`(74) Attorney, Agent, or Firm—Miles & Stockbridge P.C.;
`Vincent L. Ramik, Esq.
`
`(57)
`
`ABSTRACT
`
`An automotive construction machine for working ground
`surfaces, with a machine frame, a drive engine for driving
`traveling devices and for driving working devices, and a mill-
`ing drum for milling the ground surfaces, which can be raised,
`driven by, and can be uncoupled from a drum drive, the
`milling drumcan be moved into a raised position whennotin
`milling mode, and whenraised, the rotating direction of the
`milling drum corresponds to the rotating direction ofthe
`traveling devices and remains coupled withthe drive engine,
`and a monitoring device monitors the distance between the
`milling drum and the ground surface and uncouples the raised
`milling drum from the drive engine or uncouplesthe traveling
`devices from the drive engine or raises the machine frame or
`generates an alarm signal when the monitoring device detects
`a deviation that falls below a pre-determineddistance, or any
`of the latter.
`
`4,139,318 A
`4,929,121 A *
`
`2/1979 Jakobetal.
`5/1990 Lentetal. we 299/1.5
`
`20 Claims, 4 Drawing Sheets
`
`
`
`WA-0014099
`
`

`

`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 3 of 11 PageID #: 10520
`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 3 of 11 PagelD #: 10520
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`U.S. Patent
`
`May12, 2009
`
`Sheet 1 of 4
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`US 7,530,641 B2
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`WA-0014100
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`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 4 of 11 PageID #: 10521
`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 4 of 11 PagelD #: 10521
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`U.S. Patent
`
`May12, 2009
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`Sheet 2 of 4
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`US 7,530,641 B2
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`a
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`14 lL
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`©C
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`Y
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`21
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`WA-0014101
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`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 5 of 11 PageID #: 10522
`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 5 of 11 PagelD #: 10522
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`U.S. Patent
`
`May12, 2009
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`Sheet 3 of 4
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`US 7,530,641 B2
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`WA-0014102
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`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 6 of 11 PageID #: 10523
`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 6 of 11 PagelD #: 10523
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`U.S. Patent
`
`May12, 2009
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`Sheet 4 of 4
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`US 7,530,641 B2
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`WA-0014103
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`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 7 of 11 PageID #: 10524
`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 7 of 11 PagelD #: 10524
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`US 7,530,641 B2
`
`1
`AUTOMOTIVE CONSTRUCTION MACHINE,
`AS WELL AS METHOD FOR WORKING
`GROUND SURFACES
`
`BACKGROUNDOF THE INVENTION
`
`The invention concerns an automotive construction
`
`machine, as well as a method for working ground surfaces.
`Such automotive construction machines for working
`ground surfaces are known,for instance, from EP 1408158 A.
`The road milling machine described therein shows a
`machine frame with a drive engine for driving traveling
`devices and for driving working devices. The traveling
`devices may consist of either wheels or crawler tracks, which
`are connected to the machine framevia lifting columns.
`A drum drive drives a milling drumfor milling the ground
`surfaces preferably in up-milling mode. The milling drum is
`capable of being uncoupled from the drive train by means of
`a coupling. A scraper blade is located in a height-adjustable
`manner behind the milling drum whenseen in the direction of
`travel, which can glide on the surtace milled or to be milled by
`the milling drum. In milling mode, the lower edge of the
`scraper blade is always located at the lowest plane of the
`cutting circle of the milling drum.
`Such construction machines operate in strips in accordance
`with the width of the milling drum. This means that the
`construction machinehas to travel back after having milled a
`pre-determined length of ground surface in order to then mill
`an adjacentstrip.
`Tt is necessarythat the milling drumis idle whentraveling
`backwards in order to avoid any accidental collision of the
`tools ofthe milling drumwith the ground surface, because the
`construction machine may be accelerated suddenly and
`uncontrollably in case of an inadvertent engagement of the
`milling drum with the ground surface. The circumferential
`speed of the milling drum,in particular at operating speed,is
`manytimes, for instance, three times that of the travel speed
`so that the road construction machine may be accelerated
`forcefully in case of an engagementofthe milling drum.
`This results in a risk of the milling drum being damaged in
`case of an accidental engagement with the groundsurface, so
`that the milling drumis first uncoupled from the drive train
`after it has been raised from the milled cut at the end of a
`ground surface to be worked. The construction machine can
`nowbe driven back to the beginning ofthe length of ground to
`be worked, where the speed of the drive engine must be
`reduced to idle speed first to enable coupling of the milling
`drum.
`
`Contrary to the engine of a passenger car, a considerable
`waiting period elapses until the speed of the drive engine,
`whichconsists of a combustion engine, has been reduced to
`idle speed and also until it has been increased to operating
`speed again.
`The combustion engine must then be brought back to oper-
`ating speed prior to working the next strip. These processes
`are very time-consuming and very annoying for the machine
`operator, in particular in case of short stretches of road to be
`worked. Moreover, the incessant switching operations of the
`coupling and the related frequent load changes of the com-
`bustion engine give rise to increased wear and tear of the
`coupling, the combustion engine and all componentsthat are
`part of the drive train.
`The purpose of the invention is, therefore, to create a con-
`struction machine, as well as a method for working ground
`surfaces, which is capable of reducing the time required for
`working a pre-determined ground space.
`
`10
`
`20
`
`3¢
`
`35
`
`40
`
`55
`
`6C
`
`65
`
`2
`The invention provides in an advantageous mannerthat the
`milling drum, when in raised position and with a direction of
`travel in which the rotating direction of the milling drum
`correspondsto the rotating direction of the traveling devices,
`remains coupled with the drum drive and that a monitoring
`device monitors a distance between the milling drum andthe
`ground surface and uncouples the raised milling drumfrom
`the drive engine and/or uncouplesthe traveling devices from
`the drive engine and/or raises the machine frame and/or gen-
`erates an alarm signal when the monitoring device detects a
`deviation which falls belowa pre-determined distance.
`According to the invention, the milling drum can remain
`coupled with the drive engine in a permanent manner.
`Tt is no longer required to uncouple the milling drum from
`the drive train when it is raised out of the milled cut. As a
`
`result, it is also not necessary to reduce and subsequently
`increase the speed of the combustion engine in order to
`engage the milling drum again after repositioning. The mill-
`ing drum can be removed from the milled cut by swivelling or
`raising it, for instance, via lifting columns ofthe traveling
`devices. When the milling drumis in the raised position, a
`monitoring device detects as to whether the distance between
`the raised milling drum and the ground surface, which has
`been pre-determinedfor traveling when not in milling mode,
`is maintained.Ifthe deviation falls below the pre-determined
`distance, the raised milling drum, whichat that time contin-
`ues rotating,
`is uncoupled from the drive engine so that,
`should the milling drum actually come into contact with the
`ground,the drive powerhasno effect on the milling drum and
`only the milling drum’s actual kinetic energy of rotation has
`to be destroyed. Whendoing so, the mass of the construction
`machine suffices to prevent the construction machine from
`carrying out a jump in the direction of travel
`in case the
`milling druminadvertently engages with the ground surface.
`In this way, itis ensured that no timeloss is incurred due to the
`fact that a reduction and increase of the speed of the drive
`engine have to be waited for when the construction machine
`is traveling without being in milling mode.
`A further advantage is that the wear and tear of machine
`elements, in particular ofthe coupling, the combustion engine
`and all other components that are part of the drive train, is
`reduced.
`It is preferably provided that the millmg drum mills the
`ground surface in up-milling mode, in which case traveling in
`forward direction is uncritical as the milling drumrotates in
`opposition to the direction oftravel. The invention concerns
`itself with traveling in backward direction, in whichthe mill-
`ing drum can, contrary to prior art, remain coupled with the
`drive engine despite the milling drumrotating in opposition to
`the direction oftravel.
`Likewise, traveling backwards when the milling drumis in
`down-milling mode is uncritical due to the milling drum
`rotating in the direction of travel, and according to the inven-
`tion, the milling drum, when in raised position, remains
`coupled with the drive engine also whentraveling in forward
`direction without being in milling mode.
`Monitoring ofthe pre-determined distance by the monitor-
`ing device can be effected either directly or indirectly. Direct
`measuring is effected, for instance, by means of mechanical
`or electronic measurement of the distance, whereas indirect
`measuring of the distance can be effected, for instance, via
`machine elements of the construction machine, via tracers or
`via the actual position of the lifting column carrying the
`machine frame.
`When doing so, the pre-determined distance between the
`raised milling drum andthe ground surface can be monitored
`with at least one sensor.
`
`WA-0014104
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`

`

`Case 1:17-cv-00770-JDW-MPT Document 96-3 Filed 07/28/22 Page 8 of 11 PageID #: 10525
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`US 7,530,641 B2
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`3
`The pre-determined distance to be monitored by the moni-
`toring device may be capable of being increased in accor-
`dance with the travel speed ofthe traveling device. The pre-
`determined distance
`can,
`for
`instance, be
`increased
`proportionally or progressively in accordance with the
`increasing travel speed.
`A preferred embodimentofthe invention provides that the
`milling drum is raised by a pre-determined amountthat is
`larger than a minimumdistance to be maintained between the
`milling drum and the ground surface, and that a sensing
`device measuring towards the ground surface shows a lower
`limit position which corresponds to a pre-determined dis-
`tance or to a minimumdistance to be maintained betweenthe
`
`milling drum and the ground surface. With such a sensing
`device, the monitoring device has to merely establish as to
`whether the sensing device leaves the lower limit position,
`becausein this case a pre-determined distance or a minimum
`distance to be maintained by the milling drumis no longer
`adheredto.
`
`40
`
`The construction machine maybe provided with a sensing
`device that is capable of being loweredrelative to the milling
`drum,the said sensing device projecting vis-a-vis the milling
`drum towards the ground surface by a pre-determined dis-
`tance in relation to the lowest point ofthe cutting circle ofthe
`milling drum. With the milling drum inraised position andthe =
`sensing device simultaneously in lowered position, the moni-
`toring device generates, for instance, a control signal for
`uncoupling the milling drum fromthe drive engineif the at
`least one sensor detects a contact of the at least one sensing
`device with the ground surface orthat the at least one sensing ~
`device is raised by the ground surface. This means that the
`sensing device, which may in the most simple case consist of
`a tracer, is simultaneously lowered to a lowerlimit position
`while the milling drum is raised, the said lower limit position
`corresponding to a pre-determined distance or to a minimum
`distance between the rotating milling drum and the ground
`surface. When doing so, the sensing device itself maintains a
`distance vis-a-vis the ground surface. Ifthe sensing device
`touches the ground surface while the construction machine
`travels without being in milling mode,orif it is detected that
`the sensing device is raised by the ground surface, then the
`monitoring device generates, for instance, a control signal for
`uncoupling the millmg drum from the drumdriveor the drive
`train respectively.
`The sensor is capable of detecting a ground contact, for
`instance, by meansofa structure-borne sound sensor, or the
`position of the sensing device, for instance, by means of a
`path sensor. As an alternative, the lowest position of the
`sensing device can be determined by meansof a limit switch.
`Apart from uncoupling the milling drum, the monitoring ~
`device can additionally or alternatively uncouplethe traveling
`devices fromthe drive engine and/orraise the machine frame
`and/or set off an alarm signal.
`In the raised position of the milling drum, the sensing
`device is lowered towards the ground surface by a pre-deter-
`mined amountthat is larger than the pre-determined distance
`betweenthe milling drum and the groundsurface. The sensor
`is capable ofat least detecting the lower limit position of the
`sensing device, with the lower limit position corresponding
`to, for instance, the minimum distance between the milling
`drum and the ground surface.
`The sensing device may consist ofa scraper blade that is
`arranged behind the milling drum when seenin the direction
`oftravel. The scraper blade is capable ofbeing lowered down-
`wards beyond the lowest position of the cutting circle of the
`milling drum.
`
`gS
`
`4
`A further alternative provides that the sensing device con-
`sists of a hood enclosing the milling drum and/or of a side
`plate that is arranged at the side next to a front end of the
`milling drum.
`As described previously in connection with the sensing
`device, the scraper blade, the hood, or the side plates provided
`for at the front ends ofthe milling drum can also be lowered
`beyond the lowest point ofthe cutting circle of the milling
`drum in the same way. The positionof the side plates, of the
`scraper blade and of the hood enclosing the milling drum can
`be monitored with regard to their distance from the ground
`surface in the same wayas previously described in connection
`with the sensing device.
`Incase ofa hood enclosing the milling drum,the said hood
`can be lowered relative to the milling drum. Such hood is
`known, for instance, from WO 97/20109.
`In the following, embodiments of the invention are
`explained in more detail with reference to the drawing.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`FIG. 1 is an automotive road milling machine for working
`ground surfaces in working mode.
`FIG.2 the road milling machine in accordance with FIG. 1
`traveling in backward direction.
`FIG. 3 a view ofthe height-adjustable scraper blade.
`FIG. 4 a drive train with drum drive.
`
`DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`
`The automotive construction machine 1 for working
`ground surfaces 2 shown in FIG. 1 shows a machine frame4,
`as well as a drive engine 6 for driving traveling devices 8 and
`for driving working devices. In the embodimentin F'IG. 1, the
`traveling devices 8 consist ofwheels, whereas in the embodi-
`ment in FIG.3, the said traveling devices 8 consist of crawler
`track units. The main working device consists of a milling
`drum 12 for milling the ground surface 2, where the said
`milling drum 12 is capable of being driven by a drumdrive 10
`and of being uncoupled from the drive engine 6.
`The milling drum is capable of being movedinto a raised
`position when it is not in milling mode.
`The raised position of the milling drum 12 is preferably
`achieved by means of the lifting columns 20, by way of
`raising the machine frame 4 altogether. In doing so, the mill-
`ing drum 12, which is supported in the machine frame4, is
`raised out of the milled track until it shows a pre-determined
`distance from the ground surface 2. While the milling drum
`12 is raised out of the milled track and during the subsequent
`travel, the milling drum 12 remains coupled with the drive
`engine 6 via the drumdrive 10 and a coupling 7 sothat it is not
`necessary to first reduce the speed of the drive engine 6,
`preferably a combustion engine,to idle speed, then uncouple
`the milling drum 12 from the drive engine 6 and subsequently
`increase the speed of the drive engine 6 once again to its
`operating speed.
`FIG. 1 shows the milling drum 12 in up-milling mode, in
`which the rotating direction of the milling drum 12 is in
`opposition to the rotating direction ofthe traveling devices 8.
`Whentraveling backwards, as is shown in FIG.2,the rotating
`direction of the milling drum 12 correspondsto the rotating
`direction ofthe traveling devices 8 so that there is the risk of
`the construction machine 1 being accelerated in an undesired
`mannerin case ofaccidental contact with the ground surface
`2.A monitoring device 14 has therefore been provided which
`monitors the distance between the milling drum 12 and the
`
`WA-0014105
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`US 7,530,641 B2
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`20
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`3¢
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`35
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`40
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`5
`groundsurface 2 and uncouples the raised milling drum 12
`from the drum drive 10 when the monitoring device 14 detects
`a deviation that falls below a pre-determined distance. It may
`alternatively or additionally be provided that the traveling
`devices 8 are uncoupled from the drive engine 6, or that the
`machine frameis raised, or that an alarmsignal is generated.
`The distance between the milling drum 12 and the ground
`surface 2 can be measuredeither directly or indirectly. The
`detection signals of the monitoring device 14 can either be
`forwarded to a machine control system, or can be used
`directly for uncoupling the milling drum 12 orthe traveling
`devices 8 from the drive engine 6, or can alternatively or
`additionally be used for raising the machine frame 4 by means
`of the lifting columns 20 or for generating an alarm signal.
`A sensoris preferably provided for monitoring the distance
`between the milling drum 12 and the ground surface 2. This
`sensor can measure the distance to the ground surface 2 either
`directly or indirectly. The position of a sensing device is
`monitored, for instance, in case of indirect measuring, where
`the said monitoring is effected, for instance, by means of a
`path measuring device or by means of a limit switch that
`detects a certain position of the sensing device.
`The distance to be monitored may either be a pre-deter-
`mined fixed distance, or may consist of a pre-determined
`fixed minimumdistance, or can be variable in thatitiscapable ~
`of being increased in accordance with an increasing travel
`speed of the traveling devices 8. This means that the pre-
`determineddistance increases continually and preferably ina
`proportional mannerin accordance with theincreasingtravel
`speed.
`A sensing device capable of being lowered relative to the
`raised milling drum 12 may be arrangedat the machine frame
`4 in such a mannerthat the sensing device projects vis-a-vis
`the milling drum 12 towards the ground surface 2 by a pre-
`determined distance, with the monitoring device 14, in the
`raised position ofthe milling drum 12 and the simultaneously
`lowered position ofthe sensing device, uncouplingat least the
`milling drum 12 from the drive engine 6 whenthe monitoring
`device 14 detects a contact of the at least one sensing device
`with the ground surface 2 or that the at least one sensing
`device is raised by the ground surtace 2. It is understoodthat,
`apart from uncoupling the milling drum 12 from the drive
`engine 6, the traveling devices 8 may alternatively or addi-
`tionally also be uncoupled from the drive engine 6 or the
`machine frame4 beraised via thelifting columns 260.
`A preferred embodiment in accordance with FIGS. 1 and 2
`providesthat the sensing device consists of a scraper blade 22
`that is arranged behind the milling drum 12 when seen inthe
`direction of travel.
`
`50
`
`When in milling mode in accordance with FIG. 1, the
`scraper blade 22, which is essentially height-adjustable ver-
`tically within a portal 21, is located in the milled track and
`scrapes the newly milled track behind the milling drum 12 to
`ensure that no remains are left behind in the milled track.
`
`The lower edgeofthe scraper blade 22 is thenlocated in the
`same plane as the lowest point ofthe cutting circle of the
`milling drum 12 shown in the drawings.
`FIG. 2 shows the milling drum 12 in the raised position, in
`which the lowest point of the cutting circle shows a distance
`from the ground surface 2. The scraper blade 22 is also ina
`raised position outside ofthe milled track, with the lower edge
`ofthe scraper blade 22 showing a significantly smaller dis-
`tance from the ground surface 2 than the milling drum 12. The
`distance of the lower edge of the scraper blade 22 maycor-
`respondto a pre-determined distance that the milling drum 12
`has to maintain from the ground surface 2.
`
`55
`
`60
`
`65
`
`6
`The monitoring device 14 is capable of determining, for
`instance, as to whether the scraper blade 22 touches the
`ground surface 2 by using, for instance, a structure-borne
`sound sensor.
`
`Alternatively, the monitoring device 14 is capable of deter-
`mining, for instance, as to whether the scraper blade 22 is
`raised by the ground surface 2, thus leaving its lower limit
`position. In the simplest case, this can be determined by
`meansoflimit switches for the lowest position of the scraper
`blade 22.
`
`It is understood that a distance sensor can also be arranged
`at the scraper blade 22, which is capable of measuring the
`distance to the ground surface 2 directly in a non-contact
`manner.
`
`It is further understood that in lieu of the scraper blade 22,
`a tracer can, for instance, be used that is preferably spring-
`loaded and projects from the machine frame4.
`In a further alternative, the side plate 24, whichis prefer-
`ably arranged at the front ends on both sides of the milling
`drum 12, may also be used as a sensing device. FIG. 1 shows
`the side plate 24 in operating mode, in which theside plate 24
`rests on the ground surface 2 and prevents the milling edge
`from breaking. For that reason, such a side plate 24is fre-
`quently also called an edge protection. As can be seen from
`the drawings, the side plate 24 is height-adjustable vertically,
`and it always rests on the ground surface 2 irrespective of the
`current milling depth of the milling drum 12.
`Tt can be seen in FIG. 2 that, in the raised position ofthe
`milling drum 12, the side plate 24 is also raised until it shows
`a pre-determined distance from the ground surface2. It can be
`seen in FIG.2 that the side plate 24 has reached the lowerlimit
`position in a vertical guide. Detection of the distance or ofa
`minimum distance is effected in the same way as with the
`height-adjustable scraper blade 22.
`FIG. 3 shows an embodimentofa scraper blade 22 asit is
`basically already known from EP 1 408 158 A.
`FIG.4 shows the drive train of the construction machine1,
`whichconsists ofthe drive engine 6, whichis capable ofbeing
`coupled with a drum drive 19 via a coupling 7, with the said
`drum drive 10 driving the milling drum 12, which is sup-
`ported in the machine frame 4, by meansofa belt drive 11. It
`is understoodthat the coupling 7 mayalsobe arranged on the
`output side in relation to the drum drive 10.
`It is understood that, although the embodiments show a
`road milling machine as a front-loader, other construction
`machines with a milling dram 12 like, for instance, rear-
`loaders or recyclers, can operate in accordance with the same
`principle.
`The monitoring device 14 enables an efficient and safe
`operation of the construction machine 1 so that itis no longer
`required to repeatedly reduce the drive engine 6 to idle speed
`and subsequently increase (he operating speed again al the
`ends ofa length of ground to be worked.
`Whatis claimed is:
`
`for working
`
`1. Automotive construction machine (1)
`ground surfaces (2),
`with a machine frame(4),
`witha drive engine (6) for driving traveling devices (8) and
`for driving working devices, and
`with a milling drum (12) for milling the ground surfaces
`(2), which is capable ofbeing raised andis driven by and
`capable of being uncoupled from the drive engine (6),
`where the milling drum (12) is capable ofbeing movedinto
`a raised position when it is not in milling mode,
`characterized in that,
`the milling drum (12) remains coupled with the drive
`engine (6) whenin raised position and with a direction of
`
`WA-0014106
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