US3000278A - Movable device for rolling road surfaces and the like - Google Patents

Movable device for rolling road surfaces and the like Download PDF

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Publication number
US3000278A
US3000278A US775532A US77553258A US3000278A US 3000278 A US3000278 A US 3000278A US 775532 A US775532 A US 775532A US 77553258 A US77553258 A US 77553258A US 3000278 A US3000278 A US 3000278A
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US
United States
Prior art keywords
unbalances
shafts
unbalance
shaft
chassis
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
US775532A
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English (en)
Inventor
Kaltenegger Benno
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.)
Bomag GmbH and Co OHG
Original Assignee
Bomag GmbH and Co OHG
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 Bomag GmbH and Co OHG filed Critical Bomag GmbH and Co OHG
Application granted granted Critical
Publication of US3000278A publication Critical patent/US3000278A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase
    • 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
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18344—Unbalanced weights

Definitions

  • This invention relates to a movable device for rolling road surface courses, aggregate and similar bases, said device being in form of a road roller having two weightloaded running wheels arranged one after the other in the direction of motion.
  • the invention relates to a device of the type mentioned, the two running wheels of which, while the device is moved, are under the constant action of unbalance forces causing an uninterrupted change of the total load of each running wheel, the load of each wheel changing according to a sine-shaped curve, i.e. from a maximum value through a minimum value and back to the maximum value.
  • the unbalances there is always acting on the one running wheel a component of force directed in upward direction and on the other running wheel a component of force directed downwardly at any one time.
  • the consequent constant change of load on the two running wheels has a surprisingly favorable efiect on the work to be performed by the device.
  • the periods of the sine-shaped load curves are capable of being extended or shortened by varying the speed of rotation of the unbalances.
  • the amplitude of the load curves depends only upon the unbalance mass itself, i.e., upon its weight. A change of the amplitude can be brought about by replacing the unbalances by unbalances of greater or smaller mass. However, this can be made only with a relatively great expense of time and work. A fine adjustment of the variations of amplitude would require a correspondingly extensive inventory of unbalance sets of various masses.
  • the vertical components of force produced by the rotating unbalances impart to the unbalance shaft a pendulum motion about an imaginary axis extending parallel to the axes of rotation of the running wheels.
  • the pendulum motion of the unbalance shaft transmits itself through the chassis and to the trunnions of the running wheels. Due to the staggered arrangement of the unbalances, an impulse directed in upward direction is always acting at any one time on the one running wheel and an impulse directed in downward direction is always acting at any one time on the other running wheel.
  • the amplitude of the pendulum motion of the unbalance shaft and consequently also the amplitude of the sine-shaped load curve of the running wheels is dependent upon the adjustable distance of the unbalances, the adjustment being capable of being made continuously. The greater the distance between the unbalances, the greater will be the respective amplitudes.
  • FIG. 1 is a front view of a device for rolling road surface courses and the like
  • FIG. 2 is a vertical sectional view of the device along the line 2-2 of FIG. 1
  • FIG. 3 is a horizontal sectional view through the device along the line 3-3 of FIG. 2, and
  • FIG. 4 on an enlarged scale, is a vertical cross-sectional view along the line 4-4 of FIG. 2.
  • the chassis 11 of a device for rolling road surface courses, aggregate and similar road bases bears pairs of lateral end pieces 11a wherein weight-loaded running wheels 12 of conventional construction are arranged one after the other in the direction of travel.
  • the device may be a self-propelled roller provided with appropriate drive means for the wheels 12 or be constructed as a trailer to be moved by a tractor or the like.
  • each unbalance 17, 17a or 18, 18a is fixedly and, if desired, replaceably fastened to a cylindrical hub 19 which in turn is fixedly fastened on the associated shaft 13, 13a
  • the web plates 20 each has an internally threaded opening therein that threadably receives the adjacent end of the shaft or spindle 22, the opposite ends of which spindle 22 are oppositely threaded as at 22a and 22b as illustrated in FIG. 3 for actuation by the spindle 22 with the masses or unbfl-ances 17, 17a and 18, 18a shifted in opposite direction with respect to each other in the direction of travel of the roller, said shifting being efiected by means of the threaded spindle 22 actuated by a crank handle 21.
  • both the front pair of unbalances 17, 17a and the rear pair of balances 18, 18a are fastened to the associated shafts 13 with the unbalances of respective pairs being in transverse alignment and in phase vertically but 180 degrees out of phase horizontally. Consequently, the horizontal components of force produced by the cooperating unbalances of the front and rear pairs of unbalances will always counter balance each other.
  • the front pair of unbalances are 180 degrees out of phase vertically and produce alternating vertical force components at opposite ends of the shafts to produce a vertical rocking movement about a transverse center line through the chassis 11.
  • the amplitude of the pendulum motions of the shafts 13, 13a which transmit themselves to the running wheels 12 in the manner described above can be varied continuously as desired within the shortest possible time by simply turning the crank handle 21.
  • the maximum value of the oscillation amplitude is dependent upon the mass of the unbalance pairs 17, 17a and 18, 18a.
  • the unbalances 17a, 17 and 18, 18a are preferably always at equal distances from an imaginary vertical cross plane extending through the chassis 11 in the middle between and parallel to the axes of rotation of the wheels 12.
  • the vertical unbalance forces acting upon the front wheel and those acting in opposite direction on the rear wheel are always equal in amount.
  • a vehicle for rolling road surfaces having two weight-loaded running wheels arranged one after the other in the longitudinal direction of travel, the axles of said wheels being subject to constant vibratory action of eccentric masses rotating in a vertical plane, a pair of power driven shafts extending longitudinally of said vehicle and journaled at opposite ends on the chassis thereof above said wheels, means coupling together and driving said shaftis for rotation in opposite directions, said shafts non-rotatably supporting pairs of eccentric masses shiftable longitudinally on said shafts, the masses on each shaft being located degrees out of phase at all times, said eccentric masses being disposed as pairs substantially equidistant from a central vertical plane through said chassis, and means mounting said eccentric masses for movement on said shafts longitudinally of said chassis to vary the effective moment arms of said eccentric masses.
  • each eccentric mass being fixedly mounted on a hub shiftable longitudinally of said shafts, said hubs being connected to a web plate extending transversely of said shafts and interconnecting adjacent pairs of said hubs 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Road Paving Machines (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US775532A 1957-11-23 1958-11-21 Movable device for rolling road surfaces and the like Expired - Lifetime US3000278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK27453U DE1759839U (de) 1957-11-23 1957-11-23 Fahrbare vorrichtung zum flachwalzen von strassendecken u. dgl.

Publications (1)

Publication Number Publication Date
US3000278A true US3000278A (en) 1961-09-19

Family

ID=32787189

Family Applications (1)

Application Number Title Priority Date Filing Date
US775532A Expired - Lifetime US3000278A (en) 1957-11-23 1958-11-21 Movable device for rolling road surfaces and the like

Country Status (5)

Country Link
US (1) US3000278A (xx)
CH (1) CH368516A (xx)
DE (1) DE1759839U (xx)
GB (1) GB861491A (xx)
NL (1) NL102228C (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145631A (en) * 1961-09-18 1964-08-25 Stothert & Pitt Ltd Vibratory roller
DE1227396B (de) * 1962-10-09 1966-10-20 Bernhard Beierlein Vibrationswalze mit mindestens zwei hintereinander angeordneten Walzentrommeln
US3283679A (en) * 1964-03-05 1966-11-08 Pettibone Mulliken Corp Vibratory earth compacting apparatus and method
US3595145A (en) * 1968-09-11 1971-07-27 Bopparder Maschinenbau Gmbh Soil compacting machine
US3871788A (en) * 1972-02-04 1975-03-18 Marshall Fowler Ltd Vibrating roller
US3875811A (en) * 1973-08-21 1975-04-08 Evans Products Company Transpo Multiple-way vibrator
US4087982A (en) * 1976-09-23 1978-05-09 J. I. Case Company Vibratory plow
FR2372580A1 (fr) * 1976-09-23 1978-06-30 Case Co J I Charrue vibrante
US4326859A (en) * 1980-04-25 1982-04-27 Burnham Gerald E Sr Degassing of drilling fluids
US4927289A (en) * 1988-06-24 1990-05-22 M-B-W Inc. Vibratory mechanism for a compaction roller
US20090103980A1 (en) * 2007-10-18 2009-04-23 Hermann Greschner Vibration roller
US20130055835A1 (en) * 2011-09-02 2013-03-07 Bomag Gmbh Vibration Exciter For Generating A Directed Excitation Vibration

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364605A (en) * 1919-07-25 1921-01-04 Walter L Ashmore Device for finishing concrete pavements
US1364606A (en) * 1919-09-15 1921-01-04 Walter L Ashmore Device for finishing concrete pavements
US1532843A (en) * 1922-06-02 1925-04-07 Robert C Stubbs Vibrating machine
US2039078A (en) * 1930-12-17 1936-04-28 Hertwig August Means for consolidating the ground
US2133862A (en) * 1937-11-08 1938-10-18 John T Kerns Vibrating machine
US2707559A (en) * 1952-06-30 1955-05-03 Conveyor Company Adjustable vibrating screen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364605A (en) * 1919-07-25 1921-01-04 Walter L Ashmore Device for finishing concrete pavements
US1364606A (en) * 1919-09-15 1921-01-04 Walter L Ashmore Device for finishing concrete pavements
US1532843A (en) * 1922-06-02 1925-04-07 Robert C Stubbs Vibrating machine
US2039078A (en) * 1930-12-17 1936-04-28 Hertwig August Means for consolidating the ground
US2133862A (en) * 1937-11-08 1938-10-18 John T Kerns Vibrating machine
US2707559A (en) * 1952-06-30 1955-05-03 Conveyor Company Adjustable vibrating screen

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145631A (en) * 1961-09-18 1964-08-25 Stothert & Pitt Ltd Vibratory roller
DE1227396B (de) * 1962-10-09 1966-10-20 Bernhard Beierlein Vibrationswalze mit mindestens zwei hintereinander angeordneten Walzentrommeln
US3280712A (en) * 1962-10-09 1966-10-25 Beierlein Bernhard Tamping device
US3283679A (en) * 1964-03-05 1966-11-08 Pettibone Mulliken Corp Vibratory earth compacting apparatus and method
US3595145A (en) * 1968-09-11 1971-07-27 Bopparder Maschinenbau Gmbh Soil compacting machine
US3871788A (en) * 1972-02-04 1975-03-18 Marshall Fowler Ltd Vibrating roller
US3875811A (en) * 1973-08-21 1975-04-08 Evans Products Company Transpo Multiple-way vibrator
US4087982A (en) * 1976-09-23 1978-05-09 J. I. Case Company Vibratory plow
FR2372580A1 (fr) * 1976-09-23 1978-06-30 Case Co J I Charrue vibrante
US4326859A (en) * 1980-04-25 1982-04-27 Burnham Gerald E Sr Degassing of drilling fluids
US4927289A (en) * 1988-06-24 1990-05-22 M-B-W Inc. Vibratory mechanism for a compaction roller
US20090103980A1 (en) * 2007-10-18 2009-04-23 Hermann Greschner Vibration roller
US20130055835A1 (en) * 2011-09-02 2013-03-07 Bomag Gmbh Vibration Exciter For Generating A Directed Excitation Vibration
US9192962B2 (en) * 2011-09-02 2015-11-24 Bomag Gmbh Vibration exciter for generating a directed excitation vibration

Also Published As

Publication number Publication date
GB861491A (en) 1961-02-22
CH368516A (de) 1963-04-15
DE1759839U (de) 1958-01-16
NL102228C (xx)

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