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`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 1 of 9 PagelD #: 38016
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`EXHIBIT 1
`EXHIBIT 1
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`

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`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 2 of 9 PageID #: 38017
`IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
`US008408659B2
`
`lI2~ United States Patent
`Busley et al.
`
`(Io) Patent No. :
`(45) Date of Patent:
`
`US 8,408,659 B2
`*Apr. 2, 2013
`
`(54) CONSTRUCTION MACHINE,
`IN
`PARTICULAR ROAD MILLING MACHINE,
`RECYCLER OR STABILIZER, AS WELL AS
`DRIVE TRAIN FOR CONSTRUCTION
`MACHINES OF THIS TYPE
`
`(75)
`
`Inventors:
`
`Peter Busley, Linz/Rhein
`Simons, Buchholz (DE)
`
`(DE); Dieter
`
`(73) Assignee: Wirtgen GmbH (DE)
`( * ) Notice:
`
`the term of this
`Subject to any disclaimer,
`is extended or adjusted under 35
`patent
`U.S.C. 154(b) by 0 days.
`to a terminal
`is subject
`This patent
`claimer.
`
`dis-
`
`(56)
`
`References Cited
`
`3,779,608
`3,796,462
`4,929, 121
`4,934,978
`5,378,080
`5,383,743
`5,809,985
`7,891,742
`2004/0021364
`
`U.S. PATENT DOCUMENTS
`12/1973
`Hatcher et al.
`A
`3/1974
`A
`Staab
`5/1990
`Lent et al.
`A
`6/1990
`Arzberger et al.
`A
`I/1995
`Dickson
`A
`I/1995
`Swisher, Jr.
`A
`9/1998
`Kingsley et al.
`A
`B2 *
`Busley et al.
`2/2011
`Al
`Busley et al.
`2/2004
`
`FOREIGN PATENT DOCUMENTS
`606626 AS
`11/1978
`CH
`10031195 Cl
`DE
`1/2002
`0305658 Al
`EP
`3/1989
`* cited by examiner
`
`.. . 299/39. 1
`
`(21) Appl. Noz 12/9S5, 400
`
`(22)
`
`Filed:
`
`Jan. 6, 2011
`
`(65)
`
`US 2011/0095594 Al
`
`Prior Publication Data
`Apr. 28, 2011
`
`Related U.S.Application Data
`(63) Continuation of application No. 11/918,247, filed as
`on Mar. 21,
`application No. PCT/EP2006/060907
`2006, now Pat. No. 7,891,742.
`
`(30)
`
`Foreign Application Priority Data
`
`Apr. 15, 2005
`
`(DE)
`
`10 2005 017 754
`
`(51)
`
`(52)
`(58)
`
`(2006.01)
`
`Int. Cl.
`E01C 23/088
`U.S. Cl.
`299/39.1
`Field of ClassiTication Search ................. 299/36. 1,
`299/39. 1—41.1
`See application file for complete search history.
`
`John Kreck
`Primary Examiner
`(74) Attorney, Agent, or Firm
`Lucian Wayne Beavers
`
`Waddey & Patterson, P.C.;
`
`ABSTRACT
`(57)
`A construction machine,
`road milling machine,
`in particular
`recycler or stabilizer, with a machine frame (4) that is carried
`by a chassis (2) with a working drum (6) and a drive train (S)
`comprising at the least a drive engine (10), a traction mecha-
`drive of the working drum (6)
`nism (12) for the mechanical
`with a drive element, an output element and a traction element
`(30), a device (14) for switching the torque between the drive
`engine (10)and working drum (6), and device (16)for driving
`it is provided that elements ofthe
`at least one hydraulic pump;
`drive train (S) are divided into at least
`the first
`two groups,
`the drive engine (10), the second
`group (3) shows at least
`group (5) shows at least the drive element (11)of the traction
`and where the first and the second groups
`(3, 5)
`mechanism,
`are connected to one another via an articulated
`coupling
`device (20).
`
`21 Claims, 3 Drawing Sheets
`
`18 26
`
`5
`
`10
`
`28
`
`16
`
`24
`
`22
`
`15
`
`13
`
`

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`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 3 of 9 PageID #: 38018
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`U.S. Patent
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`Apr. 2, 2013
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`Sheet 1 of 3
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`US 8,408,659 B2
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`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 4 of 9 PageID #: 38019
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`U.S. Patent
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`Apr. 2, 2013
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`Sheet 2 of 3
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`US 8,408,659 B2
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`Fig. 2
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`10
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`Fig.3
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`10
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`Fig.4
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`10
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`26
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`24
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`2p
`18
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`24
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`20
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`24
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`18
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`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 5 of 9 PageID #: 38020
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`U.S. Patent
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`Apr. 2, 2013
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`Sheet 3 of 3
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`US 8,408,659 B2
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`18
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`II
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`/
`
`r
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`I I
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`18
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`18
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`(Ill
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`18
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`12
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`14
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`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 6 of 9 PageID #: 38021
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`US 8,408,659 B2
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`1
`CONSTRUCTION MACHINE,
`IN
`PARTICULAR ROAD MILLING MACHINE,
`RECYCLER OR STABILIZER, AS WELL AS
`DRIVE TRAIN FOR CONSTRUCTION
`MACHINES OF THIS TYPE
`
`This application is a continuation of U.S. patent applica-
`tion Ser. No. 11/918,247 entitled "Construction Machine,
`In
`Particular Road Milling Machine, Recycler Or Stabilizer, As
`Well As Drive Train For Construction Machines Of This
`Type", of Busley et al. , filed Oct. 11, 2007, which is a U.S.
`Stage filing of PCT/EP2006/060907
`an
`National
`having
`filing date of Mar. 21, 2006, which claims pri-
`international
`ority to DE 102005017754.9 filed Apr. 15, 2005.
`
`BACKGROUND OF THE INVENTION
`
`The invention concerns a construction machine,
`in particu-
`lar a road milling machine, a recycler or a stabilizer, as well as
`a drive train for construction machines of this type.
`Construction machines ofthis type are known, for instance,
`from DE 10031195Cl. The construction machine for work-
`shows a chassis that carries a machine
`ing ground surfaces
`frame. A working drum is driven mechanically by a drive train
`that comprises a drive engine, a pump transfer case, a clutch
`drive of the working
`and a belt drive. The direct mechanical
`drum, which consists of a milling drum, can be engaged or
`disengaged again by means of the clutch.
`The support of the drive engine must be designed in a very
`stiff manner, as this is also the support for the belt pulley of the
`belt drive on the drive side relative to the machine frame. It is
`understood that a coaxial, rigidly supported arrangement of
`the elements of the drive
`connecting
`train is
`the shafts
`track-
`required and that, with regard to the belt drive, a rigid,
`aligned arrangement ofthe belt pulley on the drive side and on
`for the functional per-
`side is a basic requirement
`the output
`formance and long life of such a belt drive. A soft, elastic
`for the reason that the belt
`is not feasible in particular
`support
`pulley on the drive side is supported in a cantilevered manner.
`points of the support are
`This means that the two supporting
`located on one side ofthe belt pulley, with the belt pulley itself
`lies opposite the support.
`projecting freely on that side that
`the belt pulley on both sides is not desired
`Supporting
`because of the transport width of the machine that has to be
`adhered to. The stiff support of the drive train is disadvanta-
`from the drive engine are transmitted
`geous in that vibrations
`to the machine frame to a greater extent. The vibrations
`are
`in the form of
`for the machine operator,
`not only unpleasant
`to him, but
`the vibrations
`the working
`transmitted
`impair
`like, for
`conditions because larger
`flat machine components
`instance, hoods or tanks, are stimulated to sound vibrations
`during the operation of the machine.
`that are disturbing
`The effort
`to increase
`the performance
`in an
`results
`for the drive engine that needs to
`increased space requirement
`be accommodated within the pre-determined
`fixed transport
`width.
`
`SUMMARY OF THE INVENTION
`
`The purpose of the invention
`to further
`therefore,
`is,
`develop a construction machine of the type first mentioned
`above, as well as a drive train for construction machines of
`that less vibrations
`in such a manner
`from the drive
`that type,
`to the machine frame, with the drive
`engine are transmitted
`train being sufficiently rigid at the same time to be capable of
`high mechanical power.
`transmitting
`
`The invention provides in an advantageous manner
`that the
`elements ofthe drive train are divided into at least two groups,
`i.e. includes,
`least
`the drive
`the first group shows,
`that
`at
`the second group shows at least the drive element of
`engine,
`the traction mechanism,
`the first and the second
`and that
`cou-
`group are connected to one another via an articulated
`pling device. Dividing the drive train into two groups makes
`the groups of the drive train with differ-
`it possible to support
`ent degrees of rigidity on the machine frame for the purpose
`of reducing
`of vibrations
`the transmission
`from the drive
`engine to the machine frame. The articulated coupling device
`between the first and the second group is capable of balancing
`behavior of the first group and the
`the different vibrational
`second group due to its articulation, without
`impeding a high
`transmission of power.
`this means that the support of the combus-
`In conclusion,
`tion engine, possibly with further elements of the drive train,
`in the first group may be considerably
`softer than the support
`ofthe elements ofthe drive train accommodated in the second
`group, which are to be attached to the machine frame in an as
`stiff manner as possible or in a rigid manner.
`The first group with the drive engine is attached to the
`elastically with low spring
`machine
`frame
`stiffness
`that
`from the drive engine for the purpose of
`damps the vibrations
`reducing the transmission ofvibrations
`to the machine frame,
`and the second group is attached to the machine frame with
`high spring stiffness or in a rigid manner.
`Dividing the drive train into two groups makes it possible
`that, on the one hand,
`to achieve in an advantageous manner
`the one group that comprises
`a
`the drive engine, preferably
`is supported in a relatively soft manner at
`combustion engine,
`the machine frame, by way of which the vibrations
`from the
`to the machine
`drive engine that are transmitted
`frame are
`and that, on the other hand,
`the other
`damped considerably,
`group can be supported at the machine frame with high spring
`in a nearly rigid or rigid manner, by way of which
`stiffness
`forces are supported and higher outputs are transmit-
`higher
`In doing so, the first and the second group,
`table as a result.
`to the machine
`which are attached
`frame with different
`degrees ofrigidity, are connected to one another via an articu-
`axle offset
`lated coupling device so that a slight dynamic
`and/or angular error of the output shaft of the first group with
`the drive engine is permissible vis-a-vis the drive shaft of the
`second group.
`In a preferred
`it is provided
`the first
`embodiment,
`that
`group comprises at least the drive engine and the device for
`and the second group
`driving at least one hydraulic
`pump,
`the device for switching
`comprises
`the
`the torque
`and/or
`support of a drive element of the traction mechanism on the
`a belt drive.
`the
`In this embodiment,
`drive side, preferably
`drive engine is coupled in a rigid manner with the device for
`the at
`least one hydraulic
`and is supported
`driving
`pump,
`together with that device elastically vis-a-vis
`the machine
`frame.
`the device for switching
`The second group
`the
`shows
`torque, by means of which the power flow can be interrupted,
`the support of the drive element of the traction mecha-
`and/or
`nism on the drive side. This second group may be attached to
`the machine frame in a rigid or at least nearly rigid manner.
`the device for
`offers the advantage
`This embodiment
`that
`driving the at least one hydraulic pump, which also generates
`can be supported together with the drive engine,
`vibrations,
`in the first
`in a soft manner
`preferably a combustion engine,
`group of the drive train. This embodiment
`offers the addi-
`in spite ofthe drive train for the milling
`tional advantage that,
`supply of the machine
`the hydraulic
`drum being disengaged,
`is ensured when the drive engine is running. Those elements
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`

`

`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 7 of 9 PageID #: 38022
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`US 8,408,659 B2
`
`ofthe drive train, however,
`that generate only slight vibrations
`are combined in the second group.
`it may be
`In accordance with an alternative
`embodiment,
`the drive
`the first group comprises
`least
`that
`at
`provided
`engine and the device for switching the torque, and the second
`group comprises the device for driving at least one hydraulic
`the support of a drive element of the traction
`pump and/or
`mechanism on the drive side.
`In accordance with yet another alternative
`embodiment,
`it
`the first group comprises
`at least
`the drive
`is provided that
`engine, and the second group comprises the device for driving
`as well as the device for
`the at least one hydraulic
`pump,
`the support of the drive element
`switching the torque and/or
`of the traction mechanism on the drive side.
`The articulated coupling device may be torsionally rigid.
`The articulated coupling device may, for instance, be a cardan
`the articulated coupling device may also
`shaft. Alternatively,
`be torsionally
`for instance, be an elasto-
`flexible and may,
`meric coupling.
`The device for driving the at least one hydraulic pump and
`the device for switching the torque, as well as the support of
`the drive element of the traction mechanism on the drive side
`is jointly attached to the machine
`may form an entity that
`frame with high spring stiffness or in a rigid manner.
`The device for driving the at least one hydraulic pump may
`consist of a pump transfer case for several hydraulic pumps.
`The device for switching the torque is preferably arranged
`between the device for driving the at least one hydraulic pump
`and the drive element of the traction mechanism on the drive
`stde.
`The transfer casing may show a gearbox casing with sev-
`pumps arranged at an outer circumference of
`eral hydraulic
`the gearbox casing, the said hydraulic pumps being capable of
`being jointly driven by means of the transfer
`case. The
`pumps project from the gearbox casing, pointing
`hydraulic
`the drive engine or pointing
`away from the drive
`towards
`in the interior space of
`engine. The coupling device extends
`pumps. The
`is free from hydraulic
`the gearbox casing that
`arrangement of the coupling device in the free interior space
`of the gearbox casing enables a compact design.
`it is provided that the coupling
`In a preferred embodiment,
`shaft of the drive
`device permanently
`an output
`couples
`engine with an input shaft ofthe device for driving the at least
`shaft of the device for
`one hydraulic
`an input
`pump and/or
`switching the torque. The arrangement ofthe coupling device
`space ofthe gearbox casing,
`in the radially inner intermediate
`which is free from hydraulic
`a compact
`enables
`pumps,
`design ofthe drive train, both in that case in which the transfer
`case is a part ofthe first group,
`in which the hydraulic pumps
`point away from the drive engine, as well as in that case in
`which the transfer case forms the input element ofthe second
`in which the hydraulic pumps project in the direction
`group,
`of the drive engine.
`The coupling device permanently
`couples an output
`shaft
`ofthe drive engine, or of the first group, with an input shaft of
`pump, or an
`the device for driving the at least one hydraulic
`shaft of the device for switching the torque, or of the
`input
`second group.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`of the
`In the
`are
`embodiments
`invention
`following,
`explained in more detail with reference to the drawings. The
`following is shown:
`FIG. 1 a first embodiment of the invention in the example
`of a road milling machine,
`FIG. 2 a second embodiment,
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`FIG. 3 a third embodiment,
`FIG. 4 a fourth embodiment,
`and
`FIG. 5 a side view of the embodiment
`in FIG. 4.
`FIG. 1 shows a schematic cross-section of a construction
`machine, and namely in particular a road milling machine, a
`recycler or a stabilizer with a working drum 6 that
`is sup-
`ported in a machine frame 4. Alternatively,
`the working drum
`6 may be supported in a drum housing that
`is in turn firmly
`attached to the machine frame or may also be supported to
`pivot at a machine frame 4. The machine frame 4 is carried by
`a chassis that
`is not depicted in the drawings. The working
`drum 6 may consist of, for instance,
`drum. The
`a milling
`working drum 6 of the construction machine is driven by a
`drive train S that shows at least the following elements:
`The drive train S includes a drive engine 10 that preferably
`consists of a combustion engine.
`drive of the
`A traction mechanism 12 for the mechanical
`working drum 6 shows a drive element 11 that is coupled in a
`shaft 17, and an output
`non-rotatable manner with an output
`element 13 that is coupled in a non-rotatable manner with the
`drive shaft 15 of the working drum 6. A planetary gear may
`be arranged between the drive shaft 15 and the
`additionally
`working drum 6.
`The traction mechanism 12 preferably is a belt drive where
`the drive and output elements 11, 13 consist of belt pulleys,
`with several drive belts 30 revolving
`around the said belt
`the traction mechanism 12 may also
`pulleys. Alternatively,
`consist of a chain drive, where the drive and output elements
`11, 13 then consist of the corresponding
`sprockets.
`shows a device for switching the
`The drive train S further
`torque 14, which is arranged in the drive train S between the
`drive engine 10 and the working drum 6 and preferably con-
`sists of a clutch.
`includes a device 16 for driving
`The drive train S further
`for instance, hydraulic pumps 1S, where the
`hydraulic units,
`said device 16 for driving hydraulic units is coupled with the
`drive engine 10.
`The entire drive train S is divided into at least two groups,
`with the first group showing at least the drive engine 10 and
`the second group showing at least the drive element 11of the
`traction mechanism 12. The first and the second groups 3, 5
`are connected to one another mechanically via an articulated
`coupling device 20. The articulated coupling device 20 trans-
`mits the power supplied by a not depicted output shaft of the
`drive engine 10 to the second group 5 of the drive train S.
`In FIG. 1, the first group comprises the combustion engine
`10 only, which is coupled with the second group 5 via the
`coupling device 20. In the embodiment of FIG. 1, the second
`the device 16 for driving
`group 5 comprises
`least one
`at
`pump 1S, namely a pump transfer case, the clutch
`hydraulic
`14 and the belt pulley 11 of the belt drive 12.
`The combustion engine 10 is attached to the machine frame
`4 by means of elastic spring/damping
`elements 22 showing
`the vibrations
`in such a manner
`low spring stiffness,
`that
`in a combustion engine 10, as well as
`occurring in particular
`structure-borne
`sound, are transmitted to the machine frame 4
`to the smallest possible extent.
`The second group 5, on the other hand,
`is attached to the
`frame 4 by means of spring/damping
`elements 24
`machine
`the second group 5 is
`showing high spring stiffness,
`so that
`attached to the machine frame 4 in a nearly rigid manner. The
`different manner of support or attachment of the first and the
`second groups 3, 5 ofthe drive train S has the effect that, when
`the not depicted output shaft of the combustion
`in operation,
`engine 10 is not permanently
`in precise alignment with the
`shaft of the pump transfer case 16,
`also not depicted input
`device 20 balancing
`the
`articulated
`the
`with
`coupling
`
`

`

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`US 8,408,659 B2
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`the same mutual dis-
`circular manner and with, for instance,
`tance to one another around the output shaft 17 of the second
`group 5 of the drive train S.
`idler 32 of the
`The clutch 14 is formed by the tensioning
`belt drive 12, which can be actuated in the idling condition of
`the combustion engine 10.When the tensioning idler 32 is in
`that position in which the drive belts 30 are tensioned,
`then the
`power of the combustion engine 10 can be transmitted
`to the
`working drum 6. When the tensioning
`idler 32 is swivelled
`the direction of the arrow that can be seen in FIG. 5,
`against
`then no power can be transmitted
`the
`so that
`any longer,
`tensioning device with the tensioning idler 32 can be used as
`a clutch.
`of the invention
`a preferred
`has
`embodiment
`Although
`it is to be
`been specifically illustrated
`and described herein,
`understood that minor variations may be made in the appara-
`tus without departing from the spirit and scope of the inven-
`tion, as defined by the appended claims.
`
`10
`
`20
`
`occurring during operation without
`dynamic misalignment
`the flow of power in the drive train S being disturbed.
`Dividing the drive train and supporting the components of
`the drive train S in a different manner achieves that consider-
`are transmitted
`from the combustion
`ably less vibrations
`engine 10 to the machine frame 4. In this way,
`it is further
`are stimulated
`prevented that larger flat machine components
`that are disturbing during the operation of
`to sound vibrations
`the machine.
`device 20 may be torsionally
`The articulated
`coupling
`rigid, and may consist of a cardan shaft.
`the articulated coupling device 20 may also
`Alternatively,
`be torsionally flexible, where the coupling device then con-
`sists of an elastomeric
`coupling.
`FIG. 2 shows a second embodiment,
`in which the first
`the combustion engine 10 and the pump
`group 3 comprises
`transfer case 16.As in the embodiment of FIG. 1, the pump
`transfer case 16 shows several hydraulic
`pumps 1S that axi-
`ally project from the gearbox casing 26 of the pump transfer
`case 16, preferably in a circumferentially
`distrib-
`uniformly
`uted manner.
`A spur gear
`case,
`inside the pump
`is arranged
`transfer
`pumps. The
`which jointly drives
`the individual
`hydraulic
`arrangement of the hydraulic
`pumps 1S results
`in a central
`space 2S between the hydraulic
`pumps 1S, in
`free interior
`which the coupling device 20 may extend which serves to
`the first and the second groups 3, 5 of the drive train
`connect
`S.This design ofthe pump transfer case 16 with a free interior
`space for arranging
`space 2S enables
`the available
`the drive
`train S across the width of the machine to be used in a better
`combustion engine 10 can be
`way, so that a more powerful
`used due to the space-saving arrangement of the components
`of the drive train S.
`In the embodiment of FIG. 2, the pump transfer case 16 is
`also included in the first group, so that vibrations
`that might
`be coming from the pump transfer case can also be absorbed
`element 22.
`by the spring/damping
`The second group 5 is formed by the clutch 14 and the belt
`pulley 11ofthe belt drive 12.By means ofthe coupling device
`20, the power of the combustion engine is first transmitted
`to
`the clutch 14 and then to the belt pulley 11.
`Insofar as the drive belts 30 and the second belt pulley 13,
`which serves as output element, are also part ofthe drive train
`S, it is to be stated that these are also supported rigidly vis-a-
`vis the machine frame 4, namely in that the second belt pulley
`13 is arranged on the drive shaft 15 of the working drum 6.
`In a further, not depicted variant ofthe embodiment of FIG.
`2, the pump transfer case 16 may be arranged on that side of
`engine 10 that
`lies opposite the coupling
`the combustion
`in this case the combustion engine 10 and
`device 20, so that
`the pump transfer case 16 also form the first group 3 of the
`is advantageous when a good
`drive train. This embodiment
`accessibility of the components of the drive train S is desired.
`In the embodiment of FIG. 3, the first group 3 of the drive
`the combustion engine 10 and the clutch 14.
`train comprises
`also offers the advantage of a good usabil-
`This embodiment
`ity of the available width of the machine frame 4.
`FIGS. 4 and 5 show an embodiment
`in which the first group
`3 of the drive train S is formed by the combustion engine 10
`that is coupled with the pump transfer case 16via the coupling
`device 20. With the belt pulley 11 of the belt drive 12, the
`pump transfer case forms the second group 5 ofthe drive train
`on the machine frame 4 in a rigid or
`S, which is supported
`nearly rigid manner.
`As can be seen from FIG. 5, the pump transfer case shows,
`pumps 1S that are arranged in a
`for instance,
`six hydraulic
`
`is claimed is:
`What
`1.A method of operating a construction machine,
`the con-
`frame carried by a
`a machine
`struction machine
`including
`chassis, a working drum,
`the drive train
`and a drive train,
`a traction drive
`25 including at least a drive engine component,
`for driving the working drum, a clutch compo-
`component
`nent, and a hydraulic
`the method
`drive component,
`pump
`comprising:
`(a) driving a subset of the components of the drive train
`component with an articulated
`from the drive engine
`coupling connected between the drive engine compo-
`nent and the subset ofthe components,
`includ-
`the subset
`for driving the
`ing at least the traction drive component
`working drum;
`from the
`component
`the drive
`engine
`(b)
`supporting
`frame elastically with a first spring stiffness;
`machine
`and
`the subset of the components
`from the
`(c) supporting
`the second
`machine frame with a second spring stiffness,
`stiffness being relatively
`than the first
`higher
`spring
`spring stiffness.
`2. The method of claim 1, further comprising:
`in step (a), accommodating movement of the drive engine
`relative to the subset of the components of
`component
`the drive train by articulation ofthe articulated coupling.
`3. The method of claim 1, wherein:
`step (c) further comprises
`rigidly supporting
`from the machine frame.
`the components
`4. The method of claim 1, wherein:
`in step (a) the articulated coupling is torsionally rigid.
`5. The method of claim 1, wherein:
`in step (a), the articulated
`coupling
`shaft.
`6. The method of claim 1, wherein:
`in step (a), the articulated coupling is torsionally flexible.
`7. The method of claim 6, wherein:
`coupling comprises
`in step (a), the articulated
`meric coupling.
`S. The method of claim 1, wherein:
`in step (a), the subset of the components
`includes
`further
`the clutch component,
`and the hydraulic
`drive
`pump
`and wherein the traction drive component,
`component,
`the clutch component
`and the hydraulic
`drive
`pump
`are jointly supported as a combined subset
`component
`entity; and
`supporting the combined subset
`step (c) further comprises
`entity from the frame with the second spring stiffness.
`
`30
`
`35
`
`40
`
`45
`
`5o
`
`55
`
`60
`
`65
`
`the subset of
`
`comprises
`
`a cardan
`
`an elasto-
`
`

`

`Case 1:17-cv-00770-JDW Document 407-1 Filed 06/07/24 Page 9 of 9 PageID #: 38024
`
`US 8,408,659 B2
`
`9. The method of claim 1, wherein:
`in step (a), the subset of the components of the drive train
`includes the clutch component and the hydraulic
`further
`component, with the clutch component
`drive
`pump
`pump drive corn-
`being located between the hydraulic
`ponent and the traction drive component.
`10. The method of claim 1, further comprising:
`and thereby switching on
`operating the clutch component
`and off the torque from the drive engine component
`to
`the working drum.
`11.The method of claim 1, wherein:
`is connected to the drive
`in step (a), the clutch component
`is
`articulated
`and the
`component,
`engine
`coupling
`located between the clutch component and the subset of
`the components of the drive train.
`12. The method of claim 1, wherein:
`in step (a), the subset of the components of the drive train
`and the articu-
`the clutch component,
`includes
`further
`lated coupling is connected between the hydraulic pump
`and the subset of the components.
`drive component
`13.The method of claim 1, wherein:
`the traction drive component
`a
`a drive pulley,
`includes
`driven pulley attached to the work drum, and a drive belt
`connecting the pulleys.
`14.A construction machine, comprising:
`a machine frame carried by a chassis;
`a working drum;
`a drive train including at least the following elements:
`a drive engine;
`a traction drive assembly for mechanically
`driving the
`the traction drive assembly including a
`working drum,
`drive element, an output element, and a traction ele-
`ment;
`a clutch for switching
`the torque between the drive
`engine and the working drum; and
`a hydraulic pump drive; and
`wherein the elements of the drive train are divided into at
`least a first subset and a second subset; and
`includes an articulated cou-
`wherein the drive train further
`to the second subset;
`pling connecting the first subset
`and
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`includes at least the drive engine;
`
`wherein the first subset
`and
`wherein the second subset
`at least one element
`includes
`selected from the group consisting of:
`the hydraulic pump drive;
`the clutch; and
`the drive element of the traction drive assembly; and
`is attached to the machine frame
`wherein the first subset
`elastically with a lower spring stiffness so that transmis-
`sion of vibrations
`to the machine frame is reduced, and
`is attached to the machine frame with
`the second subset
`spring stiffness or in a rigid manner.
`a higher
`15. The construction machine of claim 14, where:
`the second subset
`includes
`the
`the hydraulic
`pump drive,
`clutch, and the drive element ofthe traction drive assem-
`bly; and
`the clutch is connected between the hydraulic pump drive
`and the drive element of the traction drive assembly.
`16. The construction machine of claim 14, wherein the
`articulated coupling is torsionally rigid.
`17. The construction machine of claim 14, wherein the
`articulated coupling includes a cardan shaft.
`1S. The construction machine of claim 14, wherein the
`articulated coupling is torsionally flexible.
`19. The construction machine of claim 1S, wherein the
`articulated coupling comprises an elastomeric
`coupling.
`20. The construction of claim 14, wherein:
`the clutch.
`the first subset
`includes
`further
`21. The construction machine of claim 14, wherein:
`the hydraulic pump drive includes:
`an outer circumference
`a gearbox casing having
`having an interior space; and
`a plurality of hydraulic pumps arranged radially outward
`from the interior space so that the interior space is free
`the pumps projecting from the
`from hydraulic pumps,
`gearbox casing and pointing either towards or away
`from the drive engine; and
`the articulated coupling extends into the interior space of
`the gearbox casing.
`
`and
`
`