US3841777A - Paving vibratory finishing machine having a device for constant compaction of the deposited layer - Google Patents

Paving vibratory finishing machine having a device for constant compaction of the deposited layer Download PDF

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Publication number
US3841777A
US3841777A US00250063A US25006372A US3841777A US 3841777 A US3841777 A US 3841777A US 00250063 A US00250063 A US 00250063A US 25006372 A US25006372 A US 25006372A US 3841777 A US3841777 A US 3841777A
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layer
compacting
vehicle
machine
screed
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D Domenighetti
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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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4833—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
    • E01C19/4853—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements

Definitions

  • ABSTRACT A road surfacing machine of the full floating type applies road surfacing material and then levels the same. In order to make sure that the density of the surfacing material is uniform despite irregularities in the contour, the machine detects the pressure between a pressor member and the surfacing material. When the pressure decreases, thereby indicating less density, then a screed or the like is raised to increase the quantity of deposited material in that region; and when the pressure increases, the screed or the like is lowered to decrease the quantityof material.
  • the materials to be laid (generally bituminous, cement conglomerates, or mixed with other binders, stabilized earths or the like) must be finished off to form a quite levelled and possibly quite compacted layer.
  • the finishing machines are provided with vibrating and/or beating members and therefor are referred to as vibratory finishing machines.
  • vibratory finishing machines can be divided into two general classes, namely machines provided with a semi-floating levelling-compacting member and machines provided with a full floating levelling-compacting member. It will be readily understood that a constant compaction by both systems could not be hitherto assured in connection with a corrugation pre-existent in the bearing surface of the layer and this even when the final surface of the finished layer was perfectly levelled after the passage of the vibratory finishing machine.
  • the present invention relates to a vibratory finishing machine for the laying of a level layer of material, having devices for the regulation of the compacting energy to be exerted upon the laid material, characterized in that in said machinee are included sensor elements which, moment by moment, perceive the difference of thicknesses of the layer during the laying, which elements transform these measurements into control impulses to the feeding elements of the material and to the compacting elements, in order to regulate their action in proportion to the quantity of material needed, moment by moment, in order to be able to form a layer which is not only level but also uniformly compact in accordance with plan or project.
  • the vibratory finishing machine which will now be described and represented comprises a movable lower frame carried by feeding means (such as tracks, tired wheels, etc.), and a top floating frame carried by said underlying movable frame by means of actuating mechanisms controlled by an automatic levelling system, holding said floating frame at an attitude parallel to the ultimate design surface.
  • Such an automatic levelling vibratory finishing machine is characterized in that said floating frame is rearwards extended to connect through actuating mechanisms with the underlying operating elements, such as the distributor elements for the material to be laid,'skimmer elements for the layer of laid material and vibratory compactor elements, so as to adjust the position of said operating elements relative to the underlying ground and the operating pressure on the material to be finish off, connecting means (such as mechanical, electromechanical, oleostatic, hydraulic, direct or indirect means) being provided for adjusting the level or height of the several operating elements (such as distributor, skimmer elements and vibratory compactors) relative to the theorical levelling plane and thus for providing the desired correct ulti? mate level and, concurrently constantly maintaining within predetermined values the forces being exerted by said elements (particularly said vibratory compactor element).
  • the underlying operating elements such as the distributor elements for the material to be laid,'skimmer elements for the layer of laid material and vibratory compactor elements
  • connection between the distributor, vibratory compactor, skimmer elements and adjustment actuating mechanisms is carried out through shock-isolating mountings and members sensitive to strains, capable of converting the amount of forces being exerted by said elements on the material to be laid into signals causing the operation of the adjustment control on said actuating mechanisms, this adjustment having the purpose of changing the mutual position of said operating elements (distributor, skimmer, vibratory compactor elements) in order to maintain said forces as close as possible to the predetermined exact value.
  • FIG. 1 is a diagrammatic vertical sectional view of a vibratory finishing machine showing the distributor, skimmer and vibratory compactor elements;
  • FIG. 2 is also a diagrammatic vertical sectional view of a vibratory finishing machine for a constant compaction, comprising a variant in the members sensitive to level changes;
  • FIG. 3 is again a diagrammatic vertical sectional view showing a further exemplification for the members sensitive to level changes
  • FIG. 4 is a vertical sectional view showing a first variant for the adjusting devices
  • FIG. 5 is a second variant having a mechanical sensor member
  • FIG. 6 is an enlarged partly cross-sectional view of a fragment of the embodiment of FIG. 5.
  • the vibratory finishing machine as shown in FIG. 1, comprises a movable frame 1 having a track 2 (which of course could be replaced by a set of tired wheels) mounted thereon and carrying by pistons 3 the floating frame 4 which can be maintained parallel to the final levelling plane by a known automatic levelling apparatus continuously acting on said pistons 3.
  • Said frame 4 is rearwardly extended at 4 and has mounted thereon so as to be vertically (or almost vertically) movable the screws 5 for cross distribution of the material to be finished off, the skimmer element 6 and the vibratory compactor element 7.
  • the relative position of these elements to one another and to the ground is adjustable by actuating mechanisms 8, such as pistons, which are mounted at one end on frame 4' and at the other end on the elements 5, 6 and 7, respectively. Elongation and shortening of said actuators 8 are controlled by a hydraulic system, either manually or automatically.
  • actuators can be used, such as mechanical, electrical, pneumatic means and the like, allowing one at any time to select the relative position ofeach of said elements 5, 6 and 7 with respect to frame 4-4.
  • the non-vibrating portion of said bearings or mountings 13 is connected to piston 8 with the interposition of a strain sensitive member 14, signalling at any time the force amplitude being transmitted by the vibratory compactor element 7 to frame 4' and vice versa.
  • these sensitive members 14 are connected to pistons 8 (actuators) and condition the elongation and shortening thereof, according to whether the forces passing therethrough are higher or lower than certain desirable values.
  • a particularly simple embodiment consists of causing said sensitive members 14 to control some variously coloured lamps lighting on the finishing machine drivers dashboard. Should the force passing through the sensitive members 114 be higher than a predetermined value, this would mean that the pressure being exerted by the surface w on material II is too high: thus, the skimmer element 6 (and in the case said screws 5) should be lowered to reduce the amount of material appearing before the vibratory compactor element 7, and vice versa. By this extremely simple and semiautomatic device the operators manual operation is used.
  • a connection such as an electric connection, is provided, allowing one to lower or to raise said elements 5 and 6 as soon as the sensitive members 14 signal that a change in the forces passing therethrough has occurred.
  • FIG. 2 A further simplified automatic levelling and constant compaction device according to the present invention is shown, in FIG. 2, where the piston and the front sensitive member of the vibratory element 7 have been omitted, and where the back sensitive member 14 automatically directly controls the raising or lowering of elements 5 and 6.
  • a third simplified system according to the present invention is that as shown in FIG. 3, wherein the skimmer element 6 has been combined with the vibratory compactor element 7 and therefore, in such a case the signal from the sensitive member 14 is used to raise or to lower the front portion of the vibratory compactor element 7 (in addition to element 5).
  • FIG. 4 A further approach of a rather mechanical character is shown in FIG. 4, wherein the connection between the compactor element 9, 10 and the skimmer element 6 is carried out by means of a vertical chain 15 stretched out between two stationary pulleys l6, 16 mounted on frame 4.
  • This chain 15 vertically slides between the control member 17 of said skimmer element 6 and the control member 18 of said vibratory compactor element 9, so that when member 17 is raised, member 18 is lowered, and vice versa, whereby said skimmer element 6 and vibratory compactor element 9, l0 cooperate according to a predetermined relationship to bring the layer of finished off material 11 to the predetermined level.
  • FIGS. 5 and 6 A further example of mechanical device enabling one to adjust the layer of material being deposited on the ground is that shown in FIGS. 5 and 6, wherein the frame 4 carrying the support 19 of a roller sensor 19 that projects downward until it contacts the preexistent foundation on which the layer will be laid as formed of the material which is regularly conveyed by the conveyor belt 20 and poured against the screw 5 evenly distributing it on the road surface.
  • the roller sensor 19 follows the profile of the pre-existent surface, on which the layer 11'' is to be laid, which surface in the drawing has depressions and projections.
  • FIG. 6 shows the arrangement of FIG. 5 in greater detail, in which the support 19 is illustrated in section to show therein the electrical winding 19" having an extension of the stem 19" of sensor 19 sliding therein.
  • the quantity of current in the winding 19 is accordingly proportional to the length of the extension which is disposed in the winding at any given time and hence for any given contourof the ground and so a signal is transmitted by conventional means (not shown) to actuate the other members as described above.
  • An automatic finishing machine for depositing on a substrate a layer having a smooth surface and substantially uniform density throughout the layer, comprising a vehicle, means operatively related to the vehicle for applying a said layer of material to said substrate, said applying means comprising distributing means for said material and strike-off means for levelling the distributed material, means operatively related to the vehicle for applying compacting force to said layer to smooth said layer, and means operatively related to the vehicle and to said compacting means responsive to variations in the pressure between said layer and said compacting means to vary the quantity of material deposited on said substrate inversely as said pressure.
  • a machine as claimed in claim 1 and a shock absorbing member operatively related to the vehicle between one portion of said compacting means and said vehicle, said strike-off means comprising a screed interconnected with said compacting means by said link means thereby simultaneously to move said compact ing means and screed means in opposite vertical directions.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
US00250063A 1971-05-05 1972-05-03 Paving vibratory finishing machine having a device for constant compaction of the deposited layer Expired - Lifetime US3841777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH667371A CH564651A5 (de) 1971-05-05 1971-05-05

Publications (1)

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US3841777A true US3841777A (en) 1974-10-15

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US00250063A Expired - Lifetime US3841777A (en) 1971-05-05 1972-05-03 Paving vibratory finishing machine having a device for constant compaction of the deposited layer

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US (1) US3841777A (de)
JP (1) JPS5512486B1 (de)
AR (1) AR197960A1 (de)
AT (1) AT327270B (de)
AU (1) AU4185872A (de)
BE (1) BE783112A (de)
CH (1) CH564651A5 (de)
DE (1) DE2142914B2 (de)
ES (1) ES402405A1 (de)
FR (1) FR2135526B1 (de)
ZA (1) ZA722979B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313690A (en) * 1977-12-14 1982-02-02 As Phonix Asphalt laying machine
US4413684A (en) * 1981-07-27 1983-11-08 Duncklee Timothy V Laser-controlled ground leveling device with overfill sensor and wheel rise limiting device
US4493584A (en) * 1981-12-17 1985-01-15 Guntert & Zimmerman Const. Div., Inc. Apparatus and process for dowel insertions
US4722636A (en) * 1986-08-04 1988-02-02 Astec Industries, Inc. Self-adjusting, self-leveling tandem screed
US4930935A (en) * 1988-12-29 1990-06-05 David W. Somero Screeding apparatus and method
US5062738A (en) * 1990-04-17 1991-11-05 Owens Joe M Roller screed
US5735634A (en) * 1995-06-21 1998-04-07 Joseph Vogele Ag Road finisher and a method of applying surface layers
US5868522A (en) * 1997-01-16 1999-02-09 Astec Industries, Inc. Vibratory screed assembly for an asphalt paving machine
US6113310A (en) * 1997-06-20 2000-09-05 Hesse, Jr.; Ronald Road repair apparatus and method for pavement patching
US6203244B1 (en) 1998-01-15 2001-03-20 Van-Boh Systems, Inc. Screeding apparatus
US6322287B1 (en) 2000-04-10 2001-11-27 James E. Yelton Aggregate grading machine
US20030026653A1 (en) * 2000-06-13 2003-02-06 Crupi Francesco A. Method and apparatus for controlling the mixing of milled asphalt aggregate with rejuvenating fluid
US20030161684A1 (en) * 2002-02-27 2003-08-28 Quenzi Philip J. Apparatus and method for subgrade preparation
US6857816B2 (en) * 2001-06-20 2005-02-22 Sakai Heavy Industries, Ltd. Roller
US20060008323A1 (en) * 2004-07-06 2006-01-12 Torvinen Jeffrey W Apparatus and method for subgrade preparation
US20090202299A1 (en) * 2008-02-12 2009-08-13 Laser Strike, Llc Concrete screed with vertically adjustable gate
US20100080655A1 (en) * 2008-09-26 2010-04-01 Joseph Voegele Ag Road paver
WO2018051322A3 (en) * 2016-09-19 2018-05-24 Somero Enterprises, Inc. Concrete screeding system with boom mounted screed head

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2333371C2 (de) * 1973-06-30 1990-08-02 Dynapac HOES GmbH, 2906 Wardenburg Straßenfertiger
DE3209989A1 (de) * 1981-04-07 1983-09-29 Joseph Vögele AG, 6800 Mannheim Deckenfertiger
FR2593200B1 (fr) * 1986-01-20 1990-03-16 Blandin Yves Finisseur multi-fonctions
FR2648840B1 (fr) * 1989-06-27 1991-10-18 Blandin Yves Procede et machine pour la construction de remblais routier et autres qui nivelle, dame, malaxe, et repand
DE59006642D1 (de) * 1990-12-14 1994-09-01 Joseph Voegele Ag Fertiger.
US11313086B2 (en) * 2019-12-16 2022-04-26 Caterpillar Paving Products Inc. Material density measurement for paver application

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Publication number Priority date Publication date Assignee Title
US2346379A (en) * 1941-07-23 1944-04-11 Jackson Corwill Method of and apparatus for placing pavement slabs and the like
US2351592A (en) * 1940-08-01 1944-06-20 Barber Greene Co Tamper, screed, and deflector construction for road finishing machines
US2393954A (en) * 1942-08-27 1946-02-05 Robert D Baker Paving machine
US2491275A (en) * 1945-09-26 1949-12-13 Jaeger Machine Co Leveling means or mechanism for road surfacing machines
US2591502A (en) * 1949-04-02 1952-04-01 Jaeger Machine Co Road paving machine
US2757588A (en) * 1953-01-13 1956-08-07 Iowa Mfg Co Cedar Rapids Vibrating finishing machine
US2796811A (en) * 1953-06-03 1957-06-25 Barber Greene Co Machine for laying roads
US2922345A (en) * 1955-06-06 1960-01-26 Alexander G Mentes Apparatus for automatically leveling material in the building of roads and the like
US3029715A (en) * 1958-02-27 1962-04-17 Preco Inc Control system for paving machine
US3053157A (en) * 1959-05-01 1962-09-11 Tampo Mfg Co Inc Vibratory compacting device
US3111070A (en) * 1961-12-08 1963-11-19 Iowa Mfg Co Cedar Rapids Paving machine with automatically controlled screed
US3142915A (en) * 1962-05-11 1964-08-04 Gurries Mfg Co Automatic level control system for construction machines
US3453939A (en) * 1966-06-21 1969-07-08 Iowa Mfg Co Bituminous paver
US3599543A (en) * 1964-12-02 1971-08-17 Stothert & Pitt Ltd Vibratory machines
US3678817A (en) * 1969-01-27 1972-07-25 Barber Gaeine Co Material control system for a finishing machine

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GB1116922A (en) * 1964-03-13 1968-06-12 Hudswell Clarke And Company Lt Improvements relating to road carpeting machinery
CH412957A (it) * 1964-09-05 1966-05-15 Domenighetti Domenico Dispositivo per controllare la pressione esercitata dal gruppo livellatore vibrante di una macchina vibrofinitrice per pavimentazioni stradali
US3359875A (en) * 1965-04-09 1967-12-26 Reider John Henry Methods for laying soil cement
GB1114205A (en) * 1965-08-27 1968-05-22 Herbert Charles William Making Improvements in or relating to road-paving machines
US3403609A (en) * 1966-03-01 1968-10-01 California Fresno Asphalt Co Material spreading device
JPS522216A (en) * 1975-06-24 1977-01-08 Daido Shingo Kk Inputting method of modified diagram using digitizer

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2351592A (en) * 1940-08-01 1944-06-20 Barber Greene Co Tamper, screed, and deflector construction for road finishing machines
US2346379A (en) * 1941-07-23 1944-04-11 Jackson Corwill Method of and apparatus for placing pavement slabs and the like
US2393954A (en) * 1942-08-27 1946-02-05 Robert D Baker Paving machine
US2491275A (en) * 1945-09-26 1949-12-13 Jaeger Machine Co Leveling means or mechanism for road surfacing machines
US2591502A (en) * 1949-04-02 1952-04-01 Jaeger Machine Co Road paving machine
US2757588A (en) * 1953-01-13 1956-08-07 Iowa Mfg Co Cedar Rapids Vibrating finishing machine
US2796811A (en) * 1953-06-03 1957-06-25 Barber Greene Co Machine for laying roads
US2922345A (en) * 1955-06-06 1960-01-26 Alexander G Mentes Apparatus for automatically leveling material in the building of roads and the like
US3029715A (en) * 1958-02-27 1962-04-17 Preco Inc Control system for paving machine
US3053157A (en) * 1959-05-01 1962-09-11 Tampo Mfg Co Inc Vibratory compacting device
US3111070A (en) * 1961-12-08 1963-11-19 Iowa Mfg Co Cedar Rapids Paving machine with automatically controlled screed
US3142915A (en) * 1962-05-11 1964-08-04 Gurries Mfg Co Automatic level control system for construction machines
US3599543A (en) * 1964-12-02 1971-08-17 Stothert & Pitt Ltd Vibratory machines
US3453939A (en) * 1966-06-21 1969-07-08 Iowa Mfg Co Bituminous paver
US3678817A (en) * 1969-01-27 1972-07-25 Barber Gaeine Co Material control system for a finishing machine

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313690A (en) * 1977-12-14 1982-02-02 As Phonix Asphalt laying machine
US4413684A (en) * 1981-07-27 1983-11-08 Duncklee Timothy V Laser-controlled ground leveling device with overfill sensor and wheel rise limiting device
US4493584A (en) * 1981-12-17 1985-01-15 Guntert & Zimmerman Const. Div., Inc. Apparatus and process for dowel insertions
US4722636A (en) * 1986-08-04 1988-02-02 Astec Industries, Inc. Self-adjusting, self-leveling tandem screed
US4930935A (en) * 1988-12-29 1990-06-05 David W. Somero Screeding apparatus and method
US5062738A (en) * 1990-04-17 1991-11-05 Owens Joe M Roller screed
US5735634A (en) * 1995-06-21 1998-04-07 Joseph Vogele Ag Road finisher and a method of applying surface layers
US5868522A (en) * 1997-01-16 1999-02-09 Astec Industries, Inc. Vibratory screed assembly for an asphalt paving machine
US6113310A (en) * 1997-06-20 2000-09-05 Hesse, Jr.; Ronald Road repair apparatus and method for pavement patching
US6203244B1 (en) 1998-01-15 2001-03-20 Van-Boh Systems, Inc. Screeding apparatus
US6322287B1 (en) 2000-04-10 2001-11-27 James E. Yelton Aggregate grading machine
US20030026653A1 (en) * 2000-06-13 2003-02-06 Crupi Francesco A. Method and apparatus for controlling the mixing of milled asphalt aggregate with rejuvenating fluid
US6857816B2 (en) * 2001-06-20 2005-02-22 Sakai Heavy Industries, Ltd. Roller
US20030161684A1 (en) * 2002-02-27 2003-08-28 Quenzi Philip J. Apparatus and method for subgrade preparation
US20060008323A1 (en) * 2004-07-06 2006-01-12 Torvinen Jeffrey W Apparatus and method for subgrade preparation
US7311466B2 (en) 2004-07-06 2007-12-25 Somero Enterprises, Inc. Apparatus and method for subgrade preparation
US20090202299A1 (en) * 2008-02-12 2009-08-13 Laser Strike, Llc Concrete screed with vertically adjustable gate
US7604433B2 (en) * 2008-02-12 2009-10-20 Laser Strike, Llc Concrete screed with vertically adjustable gate
US20100080655A1 (en) * 2008-09-26 2010-04-01 Joseph Voegele Ag Road paver
US8267619B2 (en) * 2008-09-26 2012-09-18 Joseph Voegele Ag Road paver
WO2018051322A3 (en) * 2016-09-19 2018-05-24 Somero Enterprises, Inc. Concrete screeding system with boom mounted screed head
US10190268B2 (en) 2016-09-19 2019-01-29 Somero Enterprises, Inc. Concrete screeding system with boom mounted screed head
GB2568630A (en) * 2016-09-19 2019-05-22 Somero Entpr Inc Concrete screeding system with boom mounted screed head
US10494776B2 (en) 2016-09-19 2019-12-03 Somero Enterprises, Inc. Concrete screeding system with rotatable base and articulating boom
US11066790B2 (en) 2016-09-19 2021-07-20 Somero Enterprises, Inc. Concrete screeding system with floating screed head
GB2568630B (en) * 2016-09-19 2021-08-18 Somero Entpr Inc Concrete screeding system with boom mounted screed head
GB2593394A (en) * 2016-09-19 2021-09-22 Somero Entpr Inc Concrete screeding system with boom mounted screed head
GB2593394B (en) * 2016-09-19 2022-01-05 Somero Entpr Inc Concrete screeding system with boom mounted screed head

Also Published As

Publication number Publication date
CH564651A5 (de) 1975-07-31
AU4185872A (en) 1973-11-08
AR197960A1 (es) 1974-05-24
BE783112A (fr) 1972-09-01
DE2142914B2 (de) 1978-09-28
ATA389072A (de) 1975-04-15
JPS5512486B1 (de) 1980-04-02
AT327270B (de) 1976-01-26
DE2142914C3 (de) 1979-05-31
ES402405A1 (es) 1975-04-01
DE2142914A1 (de) 1972-11-16
FR2135526B1 (de) 1974-03-22
ZA722979B (en) 1973-06-27
FR2135526A1 (de) 1972-12-22

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