US3752592A - Method and apparatus for compacting the placement material in road building - Google Patents

Method and apparatus for compacting the placement material in road building Download PDF

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Publication number
US3752592A
US3752592A US00105821A US3752592DA US3752592A US 3752592 A US3752592 A US 3752592A US 00105821 A US00105821 A US 00105821A US 3752592D A US3752592D A US 3752592DA US 3752592 A US3752592 A US 3752592A
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United States
Prior art keywords
subgrade
vibrator
plate
mat
paving
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.)
Expired - Lifetime
Application number
US00105821A
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English (en)
Inventor
A Paar
F Koenig
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.)
Losenhausen Maschinenbau AG
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Losenhausen Maschinenbau AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Losenhausen Maschinenbau AG filed Critical Losenhausen Maschinenbau AG
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Publication of US3752592A publication Critical patent/US3752592A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/074—Vibrating apparatus operating with systems involving rotary unbalanced masses
    • 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
    • E01C19/22—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 consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/38—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators
    • 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
    • E01C19/486—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements with non-vibratory or non-percussive pressing or smoothing means; with supplemental elements penetrating the paving to work the material thereof

Definitions

  • paving machines receive the paving material in a hopper from a rear-dumping truck. From the hopper the material is drawn off by a conveying system and metering means to a screw distributor which deposits the material in placement thicknesses of up to 30 cm and more onto a precompacted subgrade. A heated finishing beam then strikes off the material and it is compacted from the surface by means of a tamper and vibration compacting apparatus, both of which are disposed in an adjustable or controllable leveling de-' VlCe.
  • the technological purpose of this compacting operation is to ensure that the paving material is deposited in a mat as densely as possible to enable the subsequent roller passes to be minimized. Since modern road building apparatus is capable of reaching operating speeds of up to 50 m/min with a working width of up to 5 m, it is clear that the saving of roller passes by adequate precompaction will be significant.
  • the known method of compacting the paving material as described hereinabove has a number of defects and disadvantages.
  • the placement material differs widely from case to case in regard to its compacting properties; asphalt concretes, having a high content of chips, may be very friable; bituminous carriageway surfacings comprise very cohesive material; while asphalt pavement of plastic-viscous material and lean concretes are stiffly plastic and of comparatively little cohesion. Accordingly, dynamic processing of the material from its exposed surface is not adequate in all cases.
  • an impact beam merely kneads the material and provides a compacting action only by virtue of the fact that it rams the material under the compacting apparatus which follows.
  • this problem is solved in that the subgrade is excited into oscillations in the feed direction immediately in front of the paving machine so that surface waves of the subgrade cause oscillations from its surface to be introduced into the interface between the subgrade and the paving material.
  • the term paving machine is employed herein to identify that device (perhaps part of an overall apparatus) which deposits and at least commences the initial leveling of the paving material onto the subgrade.
  • the invention utilizes the knowledge that surface waves'have a substantially more favorable conduction mechanism for dynamic conditions than does the propagation of impact processes in the depth of the material.
  • the subgrade is set into oscillations immediately in front of the paving machine and by virtue of the action of the surface waves also below the paving material which is thus quasi-vibrated from below. Accordingly, it is not only the lower strata of the paving material that are being biased in this manner but contact between the paving material and the surface of the subgrade is also improved.
  • the invention furthermore relates to apparatus for performing the method described hereinabove.
  • a method is characterized in its most general form by a vibrator compactor mounted on the road finisher immediately in front of the applied paving material and bearing on the subgrade.
  • the vibrator compactor may be provided with one or more vibration bands which generate unbalance or it may have one or more vibrator plates which produce unbalance.
  • the working part of the vibrator compactor is loaded through springs by a superimposed load so that the working part operates with the superimposed load.
  • the superimposed load can be produced by hydraulic loading means which bear on the vehicle frame of the paving machine.
  • the orientation of the vibrating force relative to the perpendicular may be adjustable.
  • the principal direction in which the vibrating force of the operating part or operating position acts is horizontal relative to the traveling direction of the paving machine. It may then adjust it to a steeper angle relative to this operating direction.
  • this may be subdivided in a similar manner into individual sets of apparatus. and may thus be constructed so that it can be optionally laterally extended in the same way as corresponding parts of the paving machine, for example, the screw distributor and the smoothing beam.
  • means are preferably provided for producing phase equality between the individual apparatus which functions simultaneously.
  • Spaces approximately equivalent to the width of one individual apparatus or the distance between the individual apparatus to the leading edge of the applied material may be provided between the individual sets of apparatus.
  • the vibrator compactor may be adapted for raising by hydraulic means which also functions as loading apparatus.
  • the numeral refers to a subgrade which is precompacted.
  • Paving material is dumped on the subgrade by a paving machine 12 of known construction.
  • This paving machine has a frame 1 1 on which is mounted a hopper device 13 for a depositing, leveling, smoothing and compacting the paving material into a mat or layer 14.
  • the road-finisher 12 Immediately in front of the material the hopper device 13 and thus thru the applied layer of paving (in traveling direction) the road-finisher 12 has a vibrator compactor with a vibrator plate 16.
  • the vibrator plate 16 is provided with an unbalance vibrator 18. This is guided by a radius rod 20.
  • the right end of the radius rod is pivotally connected to the frame and the left end is pivotally connected to plate 16.
  • the plate is restrained to movement in an are about the right end of the radius rod thrust against the soil by hydraulic cylinders 22 serving as loading means which cylinders bear against the vehicle frame of the paving machine 12.
  • hydraulic cylinders 22 serving as loading means which cylinders bear against the vehicle frame of the paving machine 12.
  • a double acting cylinder 22 it also may be employed to raise the plate 16 away from the subgrade.
  • the subgrade 10 thus has vibrations imposed upon it, the surface waves being propagated over the surface of the subgrade 10 to below the placement material 14 as indicated at 24. Vibrations are therefore induced into the placement material 14 from the surface of the subgrade 10, that is to say from below. These vibrations result in compaction of the lower strata of the placement layer 14 and provide better adhesion of the stratum on the surface of the subgrade.
  • vibrator compactor means mounted on said frame and positioned immediately in front of said device in said direction for vibrating the subgrade at a location immediately in front, in said direction, of said application to an extent sufficient to impart said vibrations to the subgrade at the interface between the mat and the subgrade and thus from the subgrade to the mat, said means having a portion in direct contact with said subgrade at a position in front of, with respect to said direction of movement, said location.
  • the vibrator compactor means is provided with one or more unbalance-energized vibrator plates.
  • said vibrator compactor means includes a vibrator plate movable with respect to the machine frame, a vibrator connected to said plate, and a radius rod connecting the plate and the machine frame for guiding the movement of the plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Soil Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Road Paving Machines (AREA)
US00105821A 1970-05-02 1971-04-29 Method and apparatus for compacting the placement material in road building Expired - Lifetime US3752592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702021457 DE2021457B2 (de) 1970-05-02 1970-05-02 Verfahren und vorrichtung zum verdichten von strassenbaumaterial

Publications (1)

Publication Number Publication Date
US3752592A true US3752592A (en) 1973-08-14

Family

ID=5770002

Family Applications (1)

Application Number Title Priority Date Filing Date
US00105821A Expired - Lifetime US3752592A (en) 1970-05-02 1971-04-29 Method and apparatus for compacting the placement material in road building

Country Status (5)

Country Link
US (1) US3752592A (de)
DE (1) DE2021457B2 (de)
FR (1) FR2088291B3 (de)
GB (1) GB1343953A (de)
SE (1) SE392740B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2745348A1 (es) * 2019-10-10 2020-02-28 Aglomerados Los Serranos S A U Maquina pavimentadora y procedimiento para la ejecucion de una capa de rodadura
EP3861170B1 (de) * 2018-10-04 2022-10-26 BOMAG GmbH Verfahren zur steuerung einer bodenverdichtungsmaschine und bodenverdichtungsmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433971A1 (de) * 1994-04-08 1995-10-12 Helmut Fischer Verfahren zur Flächenbefestigung mit Sand und Polybutadienöl

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2035627A (en) * 1933-09-13 1936-03-31 Manitowoc Ship Building Corp Apparatus for laying pavements
US2044883A (en) * 1933-09-05 1936-06-23 Jackson Corwill Paving machine
US2150325A (en) * 1936-01-10 1939-03-14 Jackson Corwill Concrete placement machine
US2633781A (en) * 1948-01-30 1953-04-07 William P Day Apparatus for road construction
US2757588A (en) * 1953-01-13 1956-08-07 Iowa Mfg Co Cedar Rapids Vibrating finishing machine
US2893299A (en) * 1956-08-31 1959-07-07 Internat Vibration Company Tamping construction machine
US2957254A (en) * 1955-01-20 1960-10-25 Arcole Midwest Corp Subgrade planer
US3253522A (en) * 1963-01-28 1966-05-31 Trac Machinery Corp Compacting machine
US3508476A (en) * 1967-08-30 1970-04-28 Barber Greene Co Method and apparatus for towing and suspending a compactor from a paver

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2044883A (en) * 1933-09-05 1936-06-23 Jackson Corwill Paving machine
US2035627A (en) * 1933-09-13 1936-03-31 Manitowoc Ship Building Corp Apparatus for laying pavements
US2150325A (en) * 1936-01-10 1939-03-14 Jackson Corwill Concrete placement machine
US2633781A (en) * 1948-01-30 1953-04-07 William P Day Apparatus for road construction
US2757588A (en) * 1953-01-13 1956-08-07 Iowa Mfg Co Cedar Rapids Vibrating finishing machine
US2957254A (en) * 1955-01-20 1960-10-25 Arcole Midwest Corp Subgrade planer
US2893299A (en) * 1956-08-31 1959-07-07 Internat Vibration Company Tamping construction machine
US3253522A (en) * 1963-01-28 1966-05-31 Trac Machinery Corp Compacting machine
US3508476A (en) * 1967-08-30 1970-04-28 Barber Greene Co Method and apparatus for towing and suspending a compactor from a paver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3861170B1 (de) * 2018-10-04 2022-10-26 BOMAG GmbH Verfahren zur steuerung einer bodenverdichtungsmaschine und bodenverdichtungsmaschine
ES2745348A1 (es) * 2019-10-10 2020-02-28 Aglomerados Los Serranos S A U Maquina pavimentadora y procedimiento para la ejecucion de una capa de rodadura

Also Published As

Publication number Publication date
SE392740B (sv) 1977-04-18
FR2088291A3 (de) 1972-01-07
DE2021457C3 (de) 1974-04-11
GB1343953A (en) 1974-01-16
FR2088291B3 (de) 1974-03-08
DE2021457A1 (de) 1971-11-25
DE2021457B2 (de) 1973-08-30

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