US3703128A - Vibrating roller - Google Patents

Vibrating roller Download PDF

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Publication number
US3703128A
US3703128A US79824A US3703128DA US3703128A US 3703128 A US3703128 A US 3703128A US 79824 A US79824 A US 79824A US 3703128D A US3703128D A US 3703128DA US 3703128 A US3703128 A US 3703128A
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US
United States
Prior art keywords
vibrating
roller
roller drum
drum
vibrating device
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
US79824A
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English (en)
Inventor
Johnny Fransson
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.)
Dynapac AB
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Dynapac AB
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Filing date
Publication date
Application filed by Dynapac AB filed Critical Dynapac AB
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Publication of US3703128A publication Critical patent/US3703128A/en
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Classifications

    • 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
    • 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
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • 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
    • E01C19/281—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows propelled by hand or by vehicles, e.g. towed

Definitions

  • ThlS arrangement provides for a high amplitude of vibration of the roller drum with the use of a Vibrating device of [58] Field of Search ..94/50, 50 v re'amiely Small mass 17 Claims, 7 Drawing Figures PATENTEU 2 3 703 128 SHEET 1 BF 3 VIBRATING ROLLER BACKGROUND OF THE INVENTION Rollers for compacting earth and the like are preferably of the vibrating type for improved efficiency. Vibrations have been provided in such rollers by using one or more rotating eccentric shafts driven by a separate engine. The rotating shafts are mounted and supported relative to the roller drum in such a manner that the centrifugal forces generated by rotation of the shafts are transmitted directly to the drum through the shaft bearings. The use of small bearings for journaling the relatively high speed shafts has severely limited the magnitude of the centrifugal forces that can be coupled therethrough to the drum.
  • a circular ball race is fixed to the inside of the roller drum.
  • a driver mounted on a central drive shaft in the roller drum centrifugal forces are transmitted directly to the shell of the roller drum, thereby unloading the rapidly rotating bearings of the drive shaft.
  • this type of vibratory mechanism requires careful assembly and frequent maintenance and, moreover, is difficult to dismantle, repair and reassemble.
  • the present invention overcomes the problems inherent in prior vibrating roller mechanisms through the use of a vibrating roller mechanism comprised of a twomass system in resonance.
  • the vibrations are generated by a rotating eccentric shaft or by a crank mechanism.
  • interacting and flexibly connected masses in the two-mass system consist of the roller drum on the one hand and a vibrating device (mass) vibrating out of phase relative to the drum on the other.
  • the ratio between the two masses is so selected that the vibration system is unaffected by variations in the nature of the ground being compacted, the mass vibrating out of phase being relatively small compared to that of the drum.
  • the shaft is driven at a speed close to the natural frequency of the system, i.e., the roller drum, springs and housing (vibrating device), or a speed that deviates so little from this frequency that a suitable vibration amplitude of the roller drum is obtained.
  • the shaft is driven at a speed close to the natural frequency of the system, i.e., the roller drum, springs and housing (vibrating device), or a speed that deviates so little from this frequency that a suitable vibration amplitude of the roller drum is obtained.
  • the vibrating device is mounted above and resiliently coupled to the roller drum. Due to the low speed of rotation of the drum, large and strong bearings, having an improved capacity for transmitting large centrifugal forces, are used to journal the drum axle. The vibrating forces from the vibrating device are transmitted through the resilient coupling to such large slowly rotating bearings of the roller drum to the drum, which is in contact with the ground or some other surface.
  • vibrations can also be generated by a weighted member vibrated by a crank mechanism which, as in the case of the rotating eccentric shaft, is driven at a speed close to the natural frequency of the vibration system or deviates so little from such frequency that the desired amplitude of drum vibration is obtained.
  • the weighted member of suitable mass corresponding to the eccentric shaft housing, is set in vibration by the crank mechanism.
  • FIG. 1 is a side elevation of a towed roller incorporating a vibrating roller mechanism in accordance with the invention
  • FIG. 2 is an elevational view, partly in section, of the roller of FIG. 1 as viewed from the right-hand side of FIG. 1;
  • FIG. 3 is a cross-sectional view of a vibrating housing and spring assembly incorporated in the roller of FIG. 1 taken along view line 33 of FIG. 2;
  • FIG. 4 is a longitudinal cross-section of a roller drum in accordance with the invention having a vibrating device located within the drum;
  • FIG. 5 is a composite view of the roller drum of FIG. 4, showing in the right-hand position a vertical sectional view taken through the middle of the roller drum and looking outward toward the right-hand end of FIG. 4 and in the left-hand portion an elevational view of the right-hand side of the roller drum of FIG. 4 with the frame broken away for clarity;
  • FIG. 6 shows another embodiment of the invention which includes a roller drum mounting a vibrating device of modified design
  • FIG. 7 is a side view of the roller drum of FIG. 6 partly broken away to show a partial cross-section along the view line 77 of FIG. 6.
  • a roller drum 1 includes an axle la rotatably mounted or journaled in bearings 3 which are connected to a frame 2. Vibrations are imparted to the roller drum, as explained hereinafter, by a vibrating device or unit 4 located above the drum.
  • An engine 5 mounted on the frame 2 drives the vibrating unit 4 through pulleys 7, 8 and 9 connected by drive belts 6a and 6b.
  • the pulley 7 is mounted on the engine 5, the pulley 8 on the frame 2 and the pulley 9 on an eccentric shaft 13 (FIG. 2).
  • the vibrating unit 4 is formed by the eccentric shaft 13 rotatably mounted in an eccentric housing 11, and both the housing and shaft extend along the width of the drum.
  • Bearings 14 positioned in each end of the housing 11 rotatably support the shaft 13.
  • a pair of horizontal flanges 11a at each end of the housing 11 are resiliently mounted in a pair of spring assemblies 15 (FIG. 3).
  • stops 17 are incorporated in the frames 16 and are engaged by the housing 11 after its vibrations have reached a certain amplitude.
  • the driving engine 5 rotates the eccentric shaft 13 through the pulleys 7, 8 and 9, and the belts 6a and 6b, thereby causing the eccentric: housing 11 to vibrate.
  • the spring assemblies 15 transmit such vibrations to the bearing frame 16, the yoke 10 and the roller drum 1.
  • the two-mass system consists on the one hand of the eccentric housing 11 and the eccentric shaft 13 and on the other of the bearing frames 16, the yoke 10 and the roller drum 1, the two masses being resiliently connected by the spring assemblies 15.
  • the two masses will vibrate out of phase with the mutual vibration amplitudes of the masses being partly determined by the relationship between the magnitudes of the masses.
  • tuning the frequency of the periodic forces generating the vibrations produces resonance effects, when such periodic forces are close to the natural frequency of the vibration system, with the result that relatively small periodic forces suffice to provide very high vibration amplitudes.
  • the resilient spring assemblies 15 provide for transmission of the vertical components of such vibratory forces to the roller drum. With this arrangement, the so-called bulge which in the past has been formed ahead of a vibrating compacting roller drum, is eliminated.
  • an eccentric housing 11' located centrally within a roller drum 1, is flexibly mounted at its ends by resilient rings 18.
  • Resilient couplings 12' mount the bearings to frame 2'.
  • An eccentric shaft 13 is rotatably mounted by bearings 14' inside of the eccentric housing 11. One end of the shaft 13' protrudes through the opening 20 to receive a pulley 21 which is adapted to be driven by a belt to impart rotary motion to the shaft.
  • the two masses constituting the two-mass system consists of the eccentric housing 11' and eccentric shaft 13' (together forming the vibrating device) on the one hand and the roller drum 1' and bearings 3 on the other, the two masses being resiliently coupled by the springs (resilient rings) 18.
  • Operation of this embodiment is substantially the same as that described in connection with the embodiment of the invention shown in FIGS. 1, 2 and 3, except that the vibrations are transmitted directly to the drum 1' and such vibrations are not limited to vertical vibrations.
  • vibrations are provided by a weighted member actuated by a crank mechanism.
  • a shaft 22 carries at each end a crank 23 journaled by a bearing 24a to a connecting rod 24.
  • a frame 26 carried by a yoke 10" mounts a pair of bearings 25 on each side of the crank 23 to rotatably support the shaft 22.
  • a pulley 27 on one end of the shaft 22 is adapted to be driven by the driving engine 5 (FIG. 1) through a suitable belt transmission.
  • a solid member 29 (the vibrating device), extending the width of the roller drum 1", is formed at each end with flattened portions 29a having openings 29b therein.
  • the connecting rod 24 extends through the opening 29b, as shown in FIG. 7, and includes a plate 240 at its upper end secured by a nut 24b.
  • flanges 290 depending from flattened portions 29a and extending horizontally at each end into spring assemblies 30 mounted in the frame 26.
  • the two-mass system is constituted on the one hand by the weighted member 29 and on the other by the crank mechanism, the frame 26, the yoke 10" and the drum 1", the two masses being resiliently coupled by the spring assemblies 30. Vibrations generated by the member 29 are transmitted by the spring assemblies 30 to the frame 26, the yoke 10" and the drum 1''.
  • the frequency, spring rate and magnitude of the two masses constituting the vibrating system are selected so that a desired vibration amplitude of the roller drum is obtained. Note that in this embodiment, as in the embodiment of FIGS. 1 through 3, only vertical vibrations are transmitted to the roller drum. Also note that large vibrating forces are transmitted through the heavy duty bearings 3" and not through the small bearings 25.
  • Vibrating roller mechanism comprising roller drum means, including a roller drum, constituting a first mass; a vibrating device constituting a second mass; spring means resiliently coupling the vibrating device to the roller drum means in vibration transmitting relation; the roller drum means, the vibrating device and the spring means forming a two-mass vibra tion system having a predetermined natural resonant frequency; and means for vibrating the vibrating device at a frequency close enough to the natural resonant frequency of the two-mass system to produce an amplification of the amplitude of vibration of the roller drum due to resonance effects in the two-mass system.
  • the housing is located above and in generally vertical alignment with the rotational axis of the roller drum and includes generally horizontal surfaces;
  • the roller drum means includes vertically spaced, generally horizontal members positioned above and below the horizontal housing surfaces;
  • the spring means is interposed between the horizontal housing surfaces and the horizontal members of the roller drum means whereby substantially only vertical vibrations are transmitted to the roller drum means.
  • Vibrating roller mechanism as defined in claim l in which is provided a frame; the roller drum means including axle means extending from each end of the roller drum, bearings journaling the axle means and coupled to the frame, and end plates of the roller drum including supporting means; and the spring means being mounted in the supporting means and coupling the vibrating device to the end plates.
  • the vibrating device comprises a weighted member having a selected mass
  • the vibrating means includes a rotatable shaft carrying a crank and a connecting rod on the crank resiliently coupled to the weighted member; and the spring means coupling the weighted member to the roller drum means.
  • Vibrating roller mechanism as defined in claim 8, wherein:
  • the weighted member is located above and in generally vertical alignment with the rotational axis of the roller drum and includes generally horizontal surfaces;
  • roller drum means includes vertically spaced
  • the spring means is interposed between the horizontal weighted member surfaces and the horizontal members of the roller drum means whereby substantially only vertical vibrations are transmitted to the roller drum means.
  • Vibrating roller mechanism comprising a frame; a roller drum having axle means; bearings journaling the axle means and coupled to the frame; a yoke carried by the bearings; a vibrating device; spring means coupling the vibrating device to the yoke in vibration transmitting relationship; a two-mass vibration system having a predetermined natural resonant frequency being formed by the resiliently coupled roller drum, bearings and yoke on the one hand and the vibrating device on the other; and means for vibrating the vibrating device at a frequency close enough to the natural resonant frequency of the two-mass system to produce an amplification of the amplitude of vibration of the roller drum due to resonance effects in the two-mass system.
  • the housing is located above and in generally vertical alignment with the axle of the roller drum and includes generally horizontal surfaces;
  • the yoke includes vertically spaced, generally horizontal members positioned above and below the horizontal housing surfaces;
  • the spring means is interposed between the horizontal housing surfaces and the horizontal yoke members, whereby substantially only vertical vibrations are transmitted to the roller drum.
  • the weighted member is located above and in generally vertical alignment with the rotational axis of the roller drum and includes generally horizontal surfaces;
  • the yoke includes vertically spaced, generally horizontal members positioned above and below the horizontal surfaces of the weighted member;
  • the spring means is interposed between the horizontal weighted member surfaces and the horizontal yoke members, whereby substantially only vertical vibrations are transmitted to the roller drum.
  • Vibrating roller mechanism comprising a frame; a roller drum having axle means; bearings journaling the axle means and coupled to the frame; end plates included in the roller drum, the end plates including supporting sleeves; a vibrating device within the drum; spring means in the supporting sleeves mounting and coupling the vibrating device to the roller drum in vibration transmitting relationship; a two-mass vibral6.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Machines (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
US79824A 1969-10-08 1970-10-12 Vibrating roller Expired - Lifetime US3703128A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13848/69A SE334172B (xx) 1969-10-08 1969-10-08

Publications (1)

Publication Number Publication Date
US3703128A true US3703128A (en) 1972-11-21

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ID=20298087

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Application Number Title Priority Date Filing Date
US79824A Expired - Lifetime US3703128A (en) 1969-10-08 1970-10-12 Vibrating roller

Country Status (13)

Country Link
US (1) US3703128A (xx)
AU (1) AU2063970A (xx)
CA (1) CA928118A (xx)
CH (1) CH527966A (xx)
DE (1) DE2048733A1 (xx)
ES (1) ES383591A1 (xx)
FR (1) FR2065126A5 (xx)
GB (1) GB1319985A (xx)
NL (1) NL7014296A (xx)
SE (1) SE334172B (xx)
SU (1) SU425410A3 (xx)
TR (1) TR16654A (xx)
ZA (1) ZA706152B (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411081A (en) * 1982-01-15 1983-10-25 King Reginald D Trench compactor having a vibratory sheepsfoot assembly
US4775262A (en) * 1987-07-21 1988-10-04 Cmi Corporation Concrete finishing machine with vibrating compactor unit
US4993869A (en) * 1989-04-07 1991-02-19 Cmi Corporation Concrete finishing machine with vibrating finishing rollers
US5526590A (en) * 1994-09-12 1996-06-18 Palm Sales, Inc. Trench compactor
US5716162A (en) * 1995-12-28 1998-02-10 Lord Corporation Dual-stage mounting system for vibratory compactor drum
US5791815A (en) * 1996-06-21 1998-08-11 Cmi Corporation Vibrating compactor assembly for use with a concrete finishing machine
US6033031A (en) * 1998-03-13 2000-03-07 Astec Industries, Inc. Milling machine with vibrating mechanism and rotary drum
US20140270957A1 (en) * 2013-03-13 2014-09-18 Joseph W. Lindley Imprint roller for stamping concrete
RU2647538C1 (ru) * 2016-12-27 2018-03-16 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирская государственная автомобильно-дорожная академия (СибАДИ)" Вибрационный самоходный каток для уплотнения материалов и грунтов
RU2690250C1 (ru) * 2018-03-05 2019-05-31 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный автомобильно-дорожный университет (СибАДИ)" Дорожный вибрационный каток

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL425122A1 (pl) * 2018-04-04 2019-10-07 Hydro-Tech-Sort Spółka Z Ograniczoną Odpowiedzialnością Urządzenie do wzbudzania drgań mechanicznych, zwłaszcza rotacyjny napęd bezwładnościowy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195429A (en) * 1962-05-07 1965-07-20 Stothert & Pitt Ltd Vibratory roller having improved driving means
US3543656A (en) * 1969-02-03 1970-12-01 Raygo Inc Soil compacting machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195429A (en) * 1962-05-07 1965-07-20 Stothert & Pitt Ltd Vibratory roller having improved driving means
US3543656A (en) * 1969-02-03 1970-12-01 Raygo Inc Soil compacting machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411081A (en) * 1982-01-15 1983-10-25 King Reginald D Trench compactor having a vibratory sheepsfoot assembly
US4775262A (en) * 1987-07-21 1988-10-04 Cmi Corporation Concrete finishing machine with vibrating compactor unit
US4993869A (en) * 1989-04-07 1991-02-19 Cmi Corporation Concrete finishing machine with vibrating finishing rollers
US5526590A (en) * 1994-09-12 1996-06-18 Palm Sales, Inc. Trench compactor
US5716162A (en) * 1995-12-28 1998-02-10 Lord Corporation Dual-stage mounting system for vibratory compactor drum
US5791815A (en) * 1996-06-21 1998-08-11 Cmi Corporation Vibrating compactor assembly for use with a concrete finishing machine
US6033031A (en) * 1998-03-13 2000-03-07 Astec Industries, Inc. Milling machine with vibrating mechanism and rotary drum
US20140270957A1 (en) * 2013-03-13 2014-09-18 Joseph W. Lindley Imprint roller for stamping concrete
US9212459B2 (en) * 2013-03-13 2015-12-15 Joseph W. Lindley Imprint roller for stamping concrete
US9649779B2 (en) 2013-03-13 2017-05-16 Jlin Corporation Extendable vibratory implement for working concrete
RU2647538C1 (ru) * 2016-12-27 2018-03-16 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирская государственная автомобильно-дорожная академия (СибАДИ)" Вибрационный самоходный каток для уплотнения материалов и грунтов
RU2690250C1 (ru) * 2018-03-05 2019-05-31 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный автомобильно-дорожный университет (СибАДИ)" Дорожный вибрационный каток

Also Published As

Publication number Publication date
DE2048733A1 (de) 1971-07-22
ZA706152B (en) 1971-04-28
CA928118A (en) 1973-06-12
TR16654A (tr) 1973-03-01
SE334172B (xx) 1971-04-19
GB1319985A (en) 1973-06-13
SU425410A3 (ru) 1974-04-25
AU2063970A (en) 1972-04-13
CH527966A (fr) 1972-09-15
NL7014296A (xx) 1971-04-14
FR2065126A5 (xx) 1971-07-23
ES383591A1 (es) 1973-01-01

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