US3909148A - Vibratory compacting machine - Google Patents

Vibratory compacting machine Download PDF

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Publication number
US3909148A
US3909148A US372621A US37262173A US3909148A US 3909148 A US3909148 A US 3909148A US 372621 A US372621 A US 372621A US 37262173 A US37262173 A US 37262173A US 3909148 A US3909148 A US 3909148A
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United States
Prior art keywords
compacting
tools
frame
tool
machine
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Expired - Lifetime
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US372621A
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English (en)
Inventor
Gulertan Vural
Albert Linz
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Bomag GmbH and Co OHG
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Bomag GmbH and Co OHG
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    • 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

Definitions

  • a vibratory compacting machine has a machine frame, at least two masses which are spring mounted relative to each other and to the frame, and a vibration exciting mechanism which is arranged to cause the masses to vibrate in a push-pull sense with respect to each other, the arrangement being such that the vibrations are substantially balanced and relatively little stress is placed on the machine frame.
  • the masses may all be compacting tools which are sprung from the machine frame and are arranged to impact the ground.
  • one of the masses may be a compensating mass which is spring mounted between the machine frame and the other mass which forms a compacting tool.
  • the compensating mass has portions which are also arranged to impact the ground so that the compensating mass doubles as a compacting tool.
  • the sensitive parts of the machine are mounted on the machine frame which is separated from the compacting parts of the machine by a flexible coupling which is connected to the compacting parts at the center of gravity.
  • FIG. 1 A first figure.
  • This invention relates to vibratory compacting machines, which are mainly used for compacting soil, of the kind comprising a machine frame, a compacting tool which is spring mounted relative to the frame, and a vibration exciting mechanism for vibrating the compacting tool.
  • a compensating mass is spring mounted between the machine frame and the compacting tool, and the vibration exciting mechanism is arranged to vibrate the compensating mass and the compacting tool in a push-pull sense; or there are at least two compacting tools spring mounted from the machine frame, and the vibration exciting mechanism is arranged to vibrate the tools in a push-pull sense; or the machine is mobile, having a tractive unit and a compactor unit including the compacting tool, the vibration exciting mechanism cm prises exciter means carried by the compactor unit and a power source for the exciter means carried by the tractive unit, and there is a connecting member between the tractive unit and the compactor unit, the
  • the push-pull vibrations may be substantially balanced so that little vibration is transmitted to the machine frame. Virtually total compensation occurs when the masses vibrate in a push-pull sense with equal products of mass and stroke.
  • a compacting tool is spring mounted from a compensating mass which in turn is spring mounted from the machine frame, and the vibration exciting mechanism is arranged to vibrate the compacting tool and the compensating mass in a push-pull sense, the compensating mass being arranged to double as a second compacting tool which in use acts on the surface to be compacted.
  • the transmission of vibrations to the sensitive parts of a vibratory compacting machine is reduced by separating the sensitive parts from the compacting part of the machine by a flexible coupling by which power is delivered to the vibration exciter in the compacting part, and by which the compacting part may also be moved.
  • FIG. 1 illustrates a first example having a single compacting tool
  • FIG. 2 illustrates a second example which is similar to the first except that the compacting tool is arranged to execute oscillatory vibrations instead of linear vibrations;
  • FIG. 3 illustrates a third example having two compacting tools, one of which doubles as a compensating mass
  • FIG. 4 illustrates a fourth example having three compacting tools:
  • FIGS. 5 and 6 together illustrate a fifth example which is similar to the fourth except that the compacting tools are arranged to execute oscillatory vibrations instead of linear vibrations;
  • FIG. 7 illustrates a self-propelled machine which is otherwise similar to the example of FIGS. 5 and 6;
  • FIG. 8 illustrates a seventh example.
  • a compensating mass 2 is spring mounted between a machine frame 1 and a compacting tool 3 by means of springs 4 acting between the frame 1 and the mass 2, and further springs 5 acting between the mass 2 and the tool 3.
  • a crank type of vibration exciting mechanism 21 may be housed in the compensating mass 2 with the crank arranged to act on the compacting tool 3 through a spring 22.
  • the vibration exciting mechanism sets the compensation mass 2 and the compacting tool 3 vibrating linearly in opposition to each other, that is in a push-pull sense, as indicated by the arrows 6.
  • the stiffness of the springs 4 is such that their resistance to the motion of the compensating mass 2 is lower, and conse-. quently the vibrations of the compacting tool 3 and of the compensating mass 2 will not be transmitted to the machine frame 1 to any great extent.
  • the arrangement and operation is similar to that of the first example shown in FIG. 1 except that the compensating mass 9 which is spring mounted from the machine frame is of inverted U-shape and straddles the compacting tool 10 which is supported from the mass 9 by springs 11.
  • the free ends of the mass 9 are arranged to contact the ground on opposite sides of the compacting tool 10, and hence the compensating mass 9 also acts as a second compacting tool.
  • the example of FIG. 3 forms a three mass oscillation system (compris ing the machine frame, the compensating mass, and the compacting tool), and undesirable stresses placed on the machine frame by operational vibrations can be.
  • a machine having the basic construction shown in FIG. 3 may also be made in which the masses 9 and are arranged to execute oscillatory vibrations.
  • each of three compacting tools 12, 13, and 14- are supported side by side from a machine frame by springs 15.
  • the two outer tools 12 and 14 are similar to each other and together have a mass equal to that of the center tool 13.
  • the machines are provided with vibration exciting mechanisms which generate vibration producing forces by means of elastic deformations and which are arranged to vibrate the compacting tools 12 and 14 in the same mode as each other and to vibrate the other tool 13 with the same frequency as the tools 12 and 14 but 180 out of phase, i.e., in a push-pull sense with the tools 12 and 14.
  • the compacting tools are arranged to vibrate linearly
  • FIGS. 5 and 6 the tools are arranged to vibrate in an oscillatory fashion about a common axis 16.
  • FIG. 7 Such a machine is illustrated diagrammatically in FIG. 7.
  • the three compacting tools are arranged to vibrate in an oscillatory mode about an axis 16, although it is just as feasible to arrange for the tools to vibrate linearly as in the example of FIG. 4.
  • the compacting tool and compensation mass are not mounted directly below the machine frame, but form a separate unit which is pivotally connected at its center of gravity to a coupling member 19 which connects the unit to the machine frame 18 which is constructed as a mobile tractive unit for propelling the compacting tools.
  • compacting tools are arranged in a similar fashion to those in the example ofFIG. 3 andcarry a vibration exare in the form of plates or beams, although they may instead be inthe form of rollers.
  • the springs illustrated between the machine frame, the compensating mass, and the compacting tools may be simple coil springs or any other suitable spring systems.
  • a vibratory compacting machine comprising: a machine frame; a compacting tool; a compensating mass; spring means having a low spring stiffness connected between said frame and said compensating mass for supporting said mass from said frame; means connected to support said tool from said mass;
  • compensating mass constitutes a second compacting tool of inverted U-shape, straddling said first-recited compacting tool and arranged to act on the same surface as the first-recited compacting tool.
  • a vibratory compacting machine comprising: a
  • a second compacting tool disposed between said first tools and equal in mass to the sum of the masses of said first tools
  • oscillating vibration means connected between said frame and each of said tools for vibrating said first tools in unison with one another and in phase opposition to said second tool so that no more than a small portion of the vibrations is transmitted to said frame.
  • a vibratory compacting machine comprising:
  • a compactor unit having first and second compacting tools and spring means connected between said tools;
  • oscillating vibration means connected between, and to each of, said tools for vibrating said tools in phase opposition;

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Press Drives And Press Lines (AREA)
  • Machine Tool Units (AREA)
  • Percussive Tools And Related Accessories (AREA)
US372621A 1972-06-24 1973-06-22 Vibratory compacting machine Expired - Lifetime US3909148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2231023A DE2231023A1 (de) 1972-06-24 1972-06-24 Vibrationsverdichter

Publications (1)

Publication Number Publication Date
US3909148A true US3909148A (en) 1975-09-30

Family

ID=5848702

Family Applications (1)

Application Number Title Priority Date Filing Date
US372621A Expired - Lifetime US3909148A (en) 1972-06-24 1973-06-22 Vibratory compacting machine

Country Status (8)

Country Link
US (1) US3909148A (it)
JP (1) JPS5734409B2 (it)
CA (1) CA1004895A (it)
CH (1) CH559825A5 (it)
DE (1) DE2231023A1 (it)
FR (1) FR2189582B1 (it)
GB (1) GB1431212A (it)
ZA (1) ZA734101B (it)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382715A (en) * 1979-07-17 1983-05-10 Koehring Gmbh - Bomag Division Mass compensated impacting apparatus
US4722635A (en) * 1983-10-25 1988-02-02 Ballast-Nedam Groep N.V. Method and device for compacting soil
FR2792554A1 (fr) * 1999-04-22 2000-10-27 Vibrachoc Sa Dispositif resonant, tel que batteur ou generateur d'efforts
US6462635B1 (en) 1999-04-22 2002-10-08 Vibrachoc Resonant device, such as a striker or load generator
US6742960B2 (en) * 2002-07-09 2004-06-01 Caterpillar Inc. Vibratory compactor and method of using same
US20100074685A1 (en) * 2006-09-06 2010-03-25 Wacker Construction Equipment Ag Oscillation Exciter
US20100294524A1 (en) * 2005-12-01 2010-11-25 James Lawrenson Agricultural implements
US20150040649A1 (en) * 2013-08-07 2015-02-12 Robert K. Barrett System and method for determining optimal design conditions for structures incorporating geosythetically confined soils
US20180216300A1 (en) * 2017-01-30 2018-08-02 Hamm Ag Soil compactor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084983A (en) * 1933-09-05 1937-06-29 Baily Robert William Apparatus for kneading and working plastic material
US2636719A (en) * 1950-02-01 1953-04-28 O Connor Patent Company Mechanism for producing hard vibrations for compaction and conveying of materials
US3024861A (en) * 1958-03-03 1962-03-13 Clynch Frank System for anchoring and transporting a seismic vibrator
US3283677A (en) * 1964-09-01 1966-11-08 Wacker Hermann Manually guided motor driven tamping device for earth, concrete and other materials
US3834827A (en) * 1970-09-23 1974-09-10 A Linz Vehicle mounted vibratory compactor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE629960C (de) * 1929-04-21 1936-05-16 Karl Witte Stampfvorrichtung mit zwei in der Bewegungsrichtung hintereinanderliegenden, abwechselnd heb- und senkbaren Stampfeinheiten
FR778672A (fr) * 1933-09-23 1935-03-22 Marteau-pilon à résonnance
DE649225C (de) * 1934-12-08 1940-02-16 Heinrich Schieferstein Schwingende Arbeitsmaschine zur Ausfuehrung von Rammarbeiten, Schlag-, Eindichtungs-und Stampfarbeiten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084983A (en) * 1933-09-05 1937-06-29 Baily Robert William Apparatus for kneading and working plastic material
US2636719A (en) * 1950-02-01 1953-04-28 O Connor Patent Company Mechanism for producing hard vibrations for compaction and conveying of materials
US3024861A (en) * 1958-03-03 1962-03-13 Clynch Frank System for anchoring and transporting a seismic vibrator
US3283677A (en) * 1964-09-01 1966-11-08 Wacker Hermann Manually guided motor driven tamping device for earth, concrete and other materials
US3834827A (en) * 1970-09-23 1974-09-10 A Linz Vehicle mounted vibratory compactor

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382715A (en) * 1979-07-17 1983-05-10 Koehring Gmbh - Bomag Division Mass compensated impacting apparatus
US4722635A (en) * 1983-10-25 1988-02-02 Ballast-Nedam Groep N.V. Method and device for compacting soil
FR2792554A1 (fr) * 1999-04-22 2000-10-27 Vibrachoc Sa Dispositif resonant, tel que batteur ou generateur d'efforts
EP1052028A1 (fr) * 1999-04-22 2000-11-15 Vibrachoc Dispositif résonant, tel que batteur ou génerateur d'efforts
US6374968B1 (en) 1999-04-22 2002-04-23 Vibrachoc Resonant device, such as a striker or load generator
US6462635B1 (en) 1999-04-22 2002-10-08 Vibrachoc Resonant device, such as a striker or load generator
US6742960B2 (en) * 2002-07-09 2004-06-01 Caterpillar Inc. Vibratory compactor and method of using same
US20100294524A1 (en) * 2005-12-01 2010-11-25 James Lawrenson Agricultural implements
US20100074685A1 (en) * 2006-09-06 2010-03-25 Wacker Construction Equipment Ag Oscillation Exciter
US8256987B2 (en) * 2006-09-06 2012-09-04 Wacker Neuson Produktion GmbH & Co. KG Oscillation exciter
US20150040649A1 (en) * 2013-08-07 2015-02-12 Robert K. Barrett System and method for determining optimal design conditions for structures incorporating geosythetically confined soils
US9328472B2 (en) * 2013-08-07 2016-05-03 R&B Leasing, Llc System and method for determining optimal design conditions for structures incorporating geosynthetically confined soils
US20180216300A1 (en) * 2017-01-30 2018-08-02 Hamm Ag Soil compactor
US10538885B2 (en) * 2017-01-30 2020-01-21 Hamm Ag Soil compactor

Also Published As

Publication number Publication date
FR2189582B1 (it) 1976-05-28
FR2189582A1 (it) 1974-01-25
ZA734101B (en) 1974-05-29
CH559825A5 (it) 1975-03-14
CA1004895A (en) 1977-02-08
JPS5734409B2 (it) 1982-07-22
DE2231023A1 (de) 1974-01-10
GB1431212A (en) 1976-04-07
JPS4951675A (it) 1974-05-20

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