US3782693A - Vibratory compactor - Google Patents

Vibratory compactor Download PDF

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Publication number
US3782693A
US3782693A US00237444A US3782693DA US3782693A US 3782693 A US3782693 A US 3782693A US 00237444 A US00237444 A US 00237444A US 3782693D A US3782693D A US 3782693DA US 3782693 A US3782693 A US 3782693A
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US
United States
Prior art keywords
vibration
generating unit
compactor
energy
vibratory compactor
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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
US00237444A
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English (en)
Inventor
G Strohbeck
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/08Internal vibrators, e.g. needle vibrators

Definitions

  • the ated vibration-generating unit having a first mount and a hand-grip unit having a second mount.
  • a rod-shaped vibration-damping connector connects the units and has first and second end portions respectively joined with the first and second mounts.
  • An electric cable supplies energy to the vibration-generating unit, and a switch arrangement selectively permits and interrupts the flow of energy through the cable.
  • the switch arrangement comprises an actuator member mounted on the handgrip unit. The actuator member is movable to a first position permitting the flow of energy, and is permanently biased to a second position interrupting the flow of energy. The possibility of damage to the vibration-generating unit resulting from inadvertent extended operation of the same is prevented, and the compactor may be conveniently employed as a handtool.
  • the present invention relates to vibration-generating units, and more particularly to vibratory compactors of the type used for compacting unhardened concrete.
  • Vibratory compactors are of course already known. However, the constructional types heretofore available are characterized by various practical disadvantages which make them awkward to operate, and by other shortcomings which tend to reduce the useful life of the compactor.
  • a typical prior-art construction makes use of a vibration-generating unit separated from the point of operator control by an elongated tube of fabric-reinforced rubber.
  • Such tubing is provided for purposes of vibration-damping and isolates the operator of the compactor from the severe jolting and jarring which the compactor generates.
  • such tubing is provided in a length of for instance about feet, and is adequately resistant to the bending stresses to which it is subjected during operation of the unit.
  • the length of tubing employed makes handling of the compactor awkward and inconvenient, and can make the compactor as a whole rather bulky.
  • Prior-art compactors of the type under discussion are usually provided at that end of the tubing which is located near the operator with some type of switch arrangement. Specifically, it has been the general practice to provide such compactors with a rotary switch which is turned and set to on and off positions, or to another selected position.
  • the vibrationgenerating unit comprises an electrical motor driving an unbalanced load.
  • the heat generated; by the motor often cannot be exhausted by means of a simple fan ventilator.
  • the unhardened concrete being treated has a considerable heat-absorption capability, it is customary simply to permit the heat generated by the driving motor to be carried off by the surrounding concrete.
  • the switching arrangement of the prior-art is disadvantageous because it frequently happens that, when a vibration-generating unit is pulled out from a body of unhardened concrete, the drive motor is not immediately shut off.
  • the heat generated by the motor conductors cannot be dissipated, and may build up to such an extent that the motor is actually damaged.
  • the drive motor will inadvertently be permitted to run for an extended period of time, resulting in complete destruction of the motor.
  • the drive motor is not only the most important, but usually the most expensive part of the compactor, and accordingly quite intolerable.
  • Still another object is to provide a compactor in which the driving motor of the vibration-generating unit is protected from damage due to overheating.
  • FIG. 1 is a partially sectioned side view of a vibratory compactor according to the invention
  • FIG. 2 is an axial section through the compactor of FIG. 1, taken on line IIII of FIG. 1;
  • FIG. 3 is a sectional detail view of a connector for use in the compactor according to the invention.
  • FIG. 1 illustrates a compactor according to the invention. It will be appreciated that this compactor, in marked contrast to prior-art compactors, is provided in the form of a hand-held tool.
  • the vibration-generating unit proper is generally identified by reference numeral 1 and comprises a non-illustrated motor driving an unbalanced load. In conventional manner, vibrationgenerating unit 1 during use of the compactor will be submerged into a body of unhardened concrete, to vibrate such concrete and cause it to settle.
  • the compactor of FIG. 1 further includes a handgrip unit generally designated by numeral 8.
  • An electrical supply cable 17. enters hand grip unit 8 through a hollow cable guard portion 12, and may be connected to a portable generator provided at a construction site, or to another source of electrical energy.
  • vibration-generating unit 1 is pro vided with first mounting means, here in the form of projecting portion 13.
  • handgrip unit 8 is provided with second mounting means in the form of a projecting portion 6.
  • the units 1 and 8 are linked by rod-shaped connecting means 5, in this embodiment comprising a hollow pipe of somewhat flexible rubber, or another suitable vibration-damping material. It has been found particularly advantageous to provide the connecting means in the form of a pipe of fabricreinforced rubber, but this is merely one possibility.
  • Vibration-damping connector 5 has a first end portion 21 and a second end portion 22 which are respectively joined with first mounting projection 13 and second mounting projection 6.
  • each of mounting means 6 and 13 comprises a cylindrical first portion and a widened second portion having the configuration of a truncated cone.
  • hollow connector 5 has an internal surface provided with recesses in which the widened portions just described are received and retained.
  • the actual joining of connector 5 to units 1 and 8 is accomplished simply by slipping an end of the connector over the respective projecting portion of the mounting means.
  • second mounting means 6 associated with handgrip unit 8 differs somewhat from first mounting means 13 associated with vibration-generating unit 1.
  • mounting means 6 comprises a flange portion 9 connected with the projecting portion of the mounting means.
  • the handgrip unit 8 includes a support structure whose support face 10 is illustrated in FIG. 2 and is provided with holes 14 for screws.
  • flange portion 9 is screwed to support face 10.
  • a rubber element 16, shown in section in FIG. 3 grips and covers the periphery of flange 9 and the end 22 of tubular connector 5. Element 16 serves to prevent loosening due to vibration. It hardly need be explained that provision of flange 9 and the specific manner of connection depicted are by no means absolutely necessary.
  • socket means adapted to receive a (non-illustrated) electrical plug associated with the electrical circuit of vibration generating unit 1.
  • the provision of such socket means greatly increases the versatility of the compactor according to the invention, it being possible in a simple manner to exchange one vibration-generating unit 1 for another having different operating characteristics, according to the requirements of a particular application.
  • FIG. 1 depicts three electrical conductors 2 passing from vibration-generating unit 1 through hollow connector 5 to the non-illustrated plug accomodated in socket 15 of handgrip unit 8. Butt joint connections 4 are provided to take up any tensile forces acting upon the conductors 2, although this is not absolutely necessary, and usually the conductors 2 will be provided as a single cable.
  • Schematically illustrated switch means SM comprises an actuator member 11 provided on the exterior of handgrip unit 8.
  • Actuator member 11 is movable to a first position in which it permits the flow of energy to the vibration-generating unit, and is permanently bi ased to second position in which it interrups the flow of energy, and thereby interrups operation of the compactor.
  • the driving motor of the vibration-generating unit cannot operate, unless the actuator 11 is positively held in its first position. In this way, it becomes quite impossible for a worker to inadvertently leave a particular motor running and, if removed from the body of concrete being treated, overheating, because running of the motor ceases immediately upon release of the actuator member.
  • the vibratory compactor according to the invention is used in a manner quite different from that of prior-art constructions.
  • the vibration-generating unit 1 is not dragged around at the end of a long hose-like connector which must be whipped about for purposes of manipulation.
  • the invention contemplates the possibility of providing a vibratory compactor in the form of a hand-held tool. Such construction greatly facilitates handling and use.
  • the switch arrangement by means of which operation of the compactor is controlled eliminates the possibility of overheating as a result of extended inadvertent use.
  • the connector 5 is shown as being made of rubber, and it has already been stated that a connector made of fabric-reinforced rubber has been found particularly advantageous. It is emphasized, however, that other materials may be employed, and that indeed a connector according to the invention can have a form quite different from that shown in FIG. 1. In addition, it has been found advantageous to employ a connector like that illustrated having a length of between about 60 and 120 cm, and preferably about cm. However, such dimensional ranges may be exceeded, if the vibratory compactor continues to have the character of a hand-held tool. Also, whereas the connector 5 of FIG.
  • Vibratory compactor for compacting unhardened concrete and the like, comprising an electrically operated vibration-generating unit provided with first mounting means; a handgrip unit provided with second mounting means; elongated vibration-damping connecting means connecting said units and having first and second end portions respectively joined with said first and second mounting means; electric cable means for supplying energy to said vibration-generating unit; and switch means for selectively permitting and interrupting the flow of energy through said cable means, and comprising an actuator member mounted on said handgrip unit, said actuator member being movable to a first position permitting the flow of energy and being permanently biased to a second position interrupting the flow of energy, thereby preventing damage to said vibration-generating unit resulting from unintended operation of the same, said handgrip unit being provided with electrical socket means electrically connected with said cable means, and adapted to receive an electrical plug associated with the electrical circuit of said vibration-generating unit, and said connecting means comprising a tube having a hollow interior, said socket means being accessible through the interior of said-tube, whereby the electrical wires associated with said plug and
  • Vibratory compactor for compacting unhardened concrete and the like, comprising an electrically operated vibration-generating unit provided with first mounting means; a handgrip unit provided with second mounting means; elongated vibration-damping connecting means connecting said units and having first and second end portions respectively joined with said first and second mounting means, said elongated vibration-damping connecting means being sufficiently stiff as to permit pushing of said vibration-generating unit into a body of unhardened concrete by force exerted on said handgrip unit without buckling of said elongated connecting means; electrical cable means for supplying energy to said vibration-generating unit; and switch means for selectively permitting and interrupting the flow of energy through said cable means, and comprising an actuator member mounted on said handgrip unit, said actuator member being movable to a first position permitting the flow of energy and being permanently biased to a second position interrupting the flow of energy, thereby preventing damage to said vibration-generating unit resulting from unintended operation of the same.
  • a vibratory compactor as defined in claim 2 at
  • a vibratory compactor as defined in claim 2 said connecting means comprising an elongated tube.
  • said connecting means comprising a hollow tube having spaced open ends, at least one of said ends constituting one of said end portions, and said mounting means comprising a projecting portion received within said one of said ends.
  • a vibratory compactor as defined in claim 5, said connecting means further comprising hose clamp means clamping said one of said end portions to said projecting portion.
  • said handgrip unit being provided with electrical socket means electrically connected with said cable means, and adapted to receive an electrical plug associated with the electrical circuit of said vibration-generating unit.
  • said handgrip unit comprising a supporting portion
  • said connecting means comprising a tube having an open end constituting said second end portion
  • said second mounting means comprising a projecting portion received within said open end and a flange connected with said projecting portion and screwed to said supporting portion.
  • a vibratory compactor as defined in claim 2 said connecting means comprising a rubber tube.
  • a vibratory compactor as defined in claim 2, said connecting means comprising a tubular pipe formed of fabric-reinforced rubber.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
US00237444A 1971-03-27 1972-03-23 Vibratory compactor Expired - Lifetime US3782693A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712114899 DE2114899B2 (de) 1971-03-27 1971-03-27 Von hand zu fuehrender innenruettler zum verdichten von beton

Publications (1)

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US3782693A true US3782693A (en) 1974-01-01

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US00237444A Expired - Lifetime US3782693A (en) 1971-03-27 1972-03-23 Vibratory compactor

Country Status (7)

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US (1) US3782693A (fr)
CH (1) CH539188A (fr)
DE (1) DE2114899B2 (fr)
ES (1) ES401196A1 (fr)
FR (1) FR2131438A5 (fr)
GB (1) GB1330825A (fr)
IT (1) IT950758B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006886A (en) * 1975-01-15 1977-02-08 B S P International Foundations Limited Soil compacting devices
US4073593A (en) * 1976-07-12 1978-02-14 Custom Trailers Mfg., Inc. Method and apparatus for providing a power screed board
EP0428028A1 (fr) * 1989-11-08 1991-05-22 Dynapac Concrete Equipment AB Vibreur interne pour compacter le béton
US5725304A (en) * 1995-12-13 1998-03-10 Makita Corporation Battery concrete vibrator
EP0964116A1 (fr) * 1998-06-09 1999-12-15 S.I.M.E. S.p.A. Aiguille vibrante alimentée par un transformateur
US6084327A (en) * 1992-12-30 2000-07-04 Wacker Werke Gmbh & Co. Kg Internal vibrator supplied with current from a transformer
US6543926B2 (en) * 2000-08-23 2003-04-08 Bronco Construction Equipment Ltd. Adapter for power tools
US6619832B1 (en) * 1999-03-24 2003-09-16 Wacker Construction Equipment Ag Poker vibrator with frequency converter
US20050158121A1 (en) * 2002-05-14 2005-07-21 Joe Lindley Apparatus for finishing concrete
US20050163566A1 (en) * 2002-05-14 2005-07-28 Lindely Joseph W. Universal power unit that adapts to all phases from placing to final finishing of concrete
US20050276156A1 (en) * 2004-06-10 2005-12-15 Elsten Stanley E Hand held concrete vibrator
CN104842325A (zh) * 2015-06-03 2015-08-19 唐胜杰 一种防水手持式振动器
CN113622607A (zh) * 2021-09-15 2021-11-09 东莞市简从科技有限公司 泥浆铺设施工方法及振动提浆机器人

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300687A (en) * 1995-05-12 1996-11-13 Plantragg Developments Vibration insulation device
DE19751579C2 (de) * 1997-11-20 2001-09-27 Wacker Werke Kg Stabrüttler mit veränderbarer Länge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947941A (en) * 1932-09-06 1934-02-20 Jackson Corwill Apparatus for treating concrete and like plastic materials
US3042386A (en) * 1960-09-26 1962-07-03 Wyzenbeek Andrew Concrete vibrator tool
US3061278A (en) * 1959-05-25 1962-10-30 Dreyer Herbert Vibrator tool
US3188054A (en) * 1963-07-12 1965-06-08 Viber Company Tubular vibrator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947941A (en) * 1932-09-06 1934-02-20 Jackson Corwill Apparatus for treating concrete and like plastic materials
US3061278A (en) * 1959-05-25 1962-10-30 Dreyer Herbert Vibrator tool
US3042386A (en) * 1960-09-26 1962-07-03 Wyzenbeek Andrew Concrete vibrator tool
US3188054A (en) * 1963-07-12 1965-06-08 Viber Company Tubular vibrator

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006886A (en) * 1975-01-15 1977-02-08 B S P International Foundations Limited Soil compacting devices
US4073593A (en) * 1976-07-12 1978-02-14 Custom Trailers Mfg., Inc. Method and apparatus for providing a power screed board
EP0428028A1 (fr) * 1989-11-08 1991-05-22 Dynapac Concrete Equipment AB Vibreur interne pour compacter le béton
US6084327A (en) * 1992-12-30 2000-07-04 Wacker Werke Gmbh & Co. Kg Internal vibrator supplied with current from a transformer
US5725304A (en) * 1995-12-13 1998-03-10 Makita Corporation Battery concrete vibrator
EP0964116A1 (fr) * 1998-06-09 1999-12-15 S.I.M.E. S.p.A. Aiguille vibrante alimentée par un transformateur
US6619832B1 (en) * 1999-03-24 2003-09-16 Wacker Construction Equipment Ag Poker vibrator with frequency converter
US20030198123A1 (en) * 1999-03-24 2003-10-23 Wacker Construction Equipment Ag Poker vibrator with frequency transformer
US6733169B2 (en) * 1999-03-24 2004-05-11 Wacker Construction Equipment Ag Poker vibrator with frequency transformer
US6543926B2 (en) * 2000-08-23 2003-04-08 Bronco Construction Equipment Ltd. Adapter for power tools
US20050158121A1 (en) * 2002-05-14 2005-07-21 Joe Lindley Apparatus for finishing concrete
US20050163566A1 (en) * 2002-05-14 2005-07-28 Lindely Joseph W. Universal power unit that adapts to all phases from placing to final finishing of concrete
US7097384B2 (en) * 2002-05-14 2006-08-29 Lindley Joseph W Universal power unit that adapts to all phases from placing to final finishing of concrete
US7153058B2 (en) * 2002-05-14 2006-12-26 Joe Lindley Apparatus for finishing concrete
US20070201302A1 (en) * 2002-05-14 2007-08-30 Lindley Joe W Vibratory Head For A Concrete Vibrator
US20050276156A1 (en) * 2004-06-10 2005-12-15 Elsten Stanley E Hand held concrete vibrator
US7278777B2 (en) 2004-06-10 2007-10-09 Elsten Stanley E Hand held concrete vibrator
CN104842325A (zh) * 2015-06-03 2015-08-19 唐胜杰 一种防水手持式振动器
CN113622607A (zh) * 2021-09-15 2021-11-09 东莞市简从科技有限公司 泥浆铺设施工方法及振动提浆机器人
CN113622607B (zh) * 2021-09-15 2024-02-23 东莞市简从科技有限公司 泥浆铺设施工方法及振动提浆机器人

Also Published As

Publication number Publication date
GB1330825A (en) 1973-09-19
IT950758B (it) 1973-06-20
FR2131438A5 (fr) 1972-11-10
DE2114899A1 (de) 1972-10-19
ES401196A1 (es) 1975-02-16
CH539188A (de) 1973-07-15
DE2114899B2 (de) 1973-07-05

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