US3606796A - Vibratory soil compacting apparatus - Google Patents

Vibratory soil compacting apparatus Download PDF

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Publication number
US3606796A
US3606796A US836092A US3606796DA US3606796A US 3606796 A US3606796 A US 3606796A US 836092 A US836092 A US 836092A US 3606796D A US3606796D A US 3606796DA US 3606796 A US3606796 A US 3606796A
Authority
US
United States
Prior art keywords
mass
unbalanced
shaft
soil compacting
housing
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
US836092A
Other languages
English (en)
Inventor
Rudolf Pappers
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.)
Bopparder Maschinenbau GmbH
Original Assignee
Bopparder Maschinenbau GmbH
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 Bopparder Maschinenbau GmbH filed Critical Bopparder Maschinenbau GmbH
Application granted granted Critical
Publication of US3606796A publication Critical patent/US3606796A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B06B1/162—Making use of masses with adjustable amount of eccentricity
    • B06B1/164—Making use of masses with adjustable amount of eccentricity the amount of eccentricity being automatically variable as a function of the running condition, e.g. speed, direction
    • 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
    • Y10T74/18544—Rotary to gyratory
    • Y10T74/18552—Unbalanced weight

Definitions

  • Unbalanced centrifugal force generators are known in which, after the apparatus has been stopped, a part of the rotating eccentric mass can be adjusted in position relative to the rotary shaft of the apparatus, and relative to another part of the mass which is fixed in position relative to the shaft.
  • the frequency can also be changed but only between two fixed values. An apparatus of this kind therefore still has only a limited range of applications.
  • Soil compacting machines are also known which are steplessly adjustable in regard to rotational speed and the distance between the unbalanced eccentric mass and the shaft.
  • This double adjustment is very costly and involves comparatively difficult manipulations by the operator. Machines of this kind have therefore not been successful in practice.
  • the object of the present invention is to provide a generator for a vibrating soil compacting apparatus which, within a limited speed range, allows the speed to be djusted while keeping the unbalanced centrifugal force constant.
  • the amplitude decreases with the square of th rotational speed.
  • an unbalanced centrifugal force generator for a vibratory soil compacting apparatus comprises a rotary shaft on which are mounted a first unbalanced eccentric mass at a fixed distance from the shaft, and a second unbalanced eccentric mass the distance of which from the shaft is variable, the second mass being mounted relatively to the shaft in such a way that centrifugal force tends to move the second mass radially outwards, against the influence of a spring.
  • the outward movement of the unbalanced mass may be limited by an adjustable mechanical stop the distance of which from the axis of the rotary shaft is adjustable.
  • a housing is mounted on the rotary shaft and contains the second mass which is guided in its radial movement by the inner walls of the housing, a helical compression spring acting between the second mass and a cover at the radially outermost end of the housing.
  • the housing can be filled with oil to act as a damper, the oil being expelled by the moving mass from one chamber into another through a gap provided for this purpose in the housing.
  • the housing can be filled with oil to act as a damper, the oil being expelled by the moving mass from one chamber into another through a gap provided for this purpose in the housing.
  • a first unbalanced mass 3 is fixed to a rotary shaft 1 by a key 2, so that this first unbalanced mass is fixed in position relative to the rotary shaft, prevented from rotating relative to the shaft and prevented from moving toward or away from the shaft.
  • a wall 4 of a housing mounted on the rotary shaft is integral with the fixed unbalanced mass 3.
  • the housing has a cover 5 containing an internal annular groove 6.
  • the cover 5 is a tight fit on a flange 7 of the wall 4, forming an oil tight seal.
  • a helical compression spring 8 is supported at one end in the groove 6, which acts as a retaining groove, preventing sideways movement.
  • the housing In cross section, that is to say in a plane parallel to the shaft 1 and perpendicular to the axis of the housing 4, the housing is circular to facilitate obtaining a good fit between the cylindrical housing 4 and a cylindrical unbalanced mass 9, which is capable of sliding radially in the cylindrical housing.
  • the unbalanced mass 9 has an annular groove 10, opposite the annular groove 6 in the cover of the housing, for accommodating the other end of the spring 8.
  • the housing is filled with oil, there being a drilling 11 allowing the oil to flow between one face and the other face of the adjustable unbalanced mass 9.
  • the drilling or passage 11 may be of variable diameter provided in different inserts, one of which is shown at 9a.
  • This eccentric force generator allows variation of rotational speed, within certain limits, without any change, or with very little change in the resulting centrifugal force.
  • the oil used for damping the movement of the adjustable unbalanced mass 9 also serves as a lubricant between the adjustable unbalanced mass and the inner wall of the cylindrical housing 4.
  • the adjustable unbalanced mass 9 and the spring 8 can easily be removed and replaced. Maintenance of the apparatus is therefore very simple.
  • the dynamic characteristics of the apparatus can easily be changed by installing different 3 springs and different adjustable unbalanced masses.
  • the spring can have a progressive or a regressive characteristic curve.
  • dish springs instead of a helical spring there can if desired be used dish springs, rubber springs, or pneumatic springs.
  • an unbalanced centrifugal force generator comprising a rotary shaft, a first unbalanced eccentric mass mounted on said shaft at a fixed distance in a first direction radially from the axis of said shaft, a housing mounted on said rotary shaft in general alignment tranversely of the shaft with the first mass, said housing having a cylinder therein with its axis extending in a second direction, diametrically opposite the first direction, a second unbalanced mass mounted for reciprocation in the cylinder and functioning as a piston therein, yieldable means constantly urging the second unbalanced mass radially inwardly of the cylinder, and a liquid in the cylinder at least substantially filling the spaces in the cylinder radially inwardly and outwardly of the second mass, the parts being so constructed and arranged that the liquid can pass from one side of the second mass to the other upon the creation of a pressure difference between the liquid on said two sides of the second mass, whereby to damp the radial movements

Landscapes

  • 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)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Road Paving Machines (AREA)
US836092A 1968-06-29 1969-06-24 Vibratory soil compacting apparatus Expired - Lifetime US3606796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1784029A DE1784029C3 (de) 1968-06-29 1968-06-29 Schwingungserzeuger für ein Bodenverdichtungsgerät

Publications (1)

Publication Number Publication Date
US3606796A true US3606796A (en) 1971-09-21

Family

ID=5705398

Family Applications (1)

Application Number Title Priority Date Filing Date
US836092A Expired - Lifetime US3606796A (en) 1968-06-29 1969-06-24 Vibratory soil compacting apparatus

Country Status (12)

Country Link
US (1) US3606796A (de)
JP (1) JPS493099B1 (de)
AT (1) AT299292B (de)
BE (1) BE735316A (de)
CA (1) CA919950A (de)
CH (1) CH490897A (de)
DE (1) DE1784029C3 (de)
FR (1) FR2014437A1 (de)
GB (1) GB1233296A (de)
NL (1) NL6909931A (de)
NO (1) NO127460B (de)
SE (1) SE363867B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814532A (en) * 1972-02-04 1974-06-04 Raygo Inc Compacting machine having variable vibration
US3888600A (en) * 1973-07-25 1975-06-10 Koehring Gmbh Bomag Division Variable mass oscillation exciter
US4105356A (en) * 1977-05-19 1978-08-08 Koehring Corporation Vibratory roller
US4341126A (en) * 1977-02-25 1982-07-27 Thomas Hubert E Variable amplitude vibratory apparatus
US4342523A (en) * 1981-02-24 1982-08-03 Koehring Company High-low force amplitude device
US4348912A (en) * 1979-08-21 1982-09-14 Thomas Hubert E Variable amplitude vibrator apparatus
US4367054A (en) * 1981-02-24 1983-01-04 The Koehring Company Vibratory roller
US4370894A (en) * 1979-07-04 1983-02-01 Sturesson Rune K Eccentric element
US4580456A (en) * 1983-04-14 1986-04-08 Kikumithus Takano Balance weight transfer device for a vibrator
US4759659A (en) * 1987-07-01 1988-07-26 Fernand Copie Variable vibrator system
US4830534A (en) * 1987-10-21 1989-05-16 Hyster Company Dual amplitude vibration generator for compaction apparatus
US6224293B1 (en) * 1999-04-19 2001-05-01 Compaction America, Inc. Variable amplitude vibration generator for compaction machine
WO2002000359A1 (de) * 2000-06-29 2002-01-03 Riedl, Franz Vibrationserreger mit amplitudenverstellung
US20110158745A1 (en) * 2009-12-31 2011-06-30 Caterpillar Paving Products Inc. Vibratory system for a compactor
CN105268621A (zh) * 2015-11-11 2016-01-27 王存伟 无级变幅振动器
US9765534B1 (en) * 2016-11-14 2017-09-19 Albert DiLuzio Concrete work tool, method of making, and applications
CN112619755A (zh) * 2020-12-24 2021-04-09 东台市鑫富达机械有限公司 一种用于粮食物料处理的粉碎设备
CN113235364A (zh) * 2021-06-18 2021-08-10 浙江奥桑机械设备有限公司 一种压路机驾驶室多重减震装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3445936A1 (de) * 1984-12-17 1986-06-26 Klöckner-Humboldt-Deutz AG, 5000 Köln Deckgewichtanordnung einer ruettelvorrichtung zur herstellung von formkoerpern
FR2599645A1 (fr) * 1986-06-06 1987-12-11 Dostes Henri Dispositif de generation de vibrations cycloidales
WO2008009314A1 (de) * 2006-07-20 2008-01-24 Franz Plasser Bahnbaumaschinen-Industriegesellschaft Mbh Verfahren und maschine zum stabilisieren eines gleises

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814532A (en) * 1972-02-04 1974-06-04 Raygo Inc Compacting machine having variable vibration
US3888600A (en) * 1973-07-25 1975-06-10 Koehring Gmbh Bomag Division Variable mass oscillation exciter
US4341126A (en) * 1977-02-25 1982-07-27 Thomas Hubert E Variable amplitude vibratory apparatus
US4105356A (en) * 1977-05-19 1978-08-08 Koehring Corporation Vibratory roller
US4370894A (en) * 1979-07-04 1983-02-01 Sturesson Rune K Eccentric element
US4348912A (en) * 1979-08-21 1982-09-14 Thomas Hubert E Variable amplitude vibrator apparatus
US4342523A (en) * 1981-02-24 1982-08-03 Koehring Company High-low force amplitude device
US4367054A (en) * 1981-02-24 1983-01-04 The Koehring Company Vibratory roller
US4580456A (en) * 1983-04-14 1986-04-08 Kikumithus Takano Balance weight transfer device for a vibrator
US4759659A (en) * 1987-07-01 1988-07-26 Fernand Copie Variable vibrator system
US4830534A (en) * 1987-10-21 1989-05-16 Hyster Company Dual amplitude vibration generator for compaction apparatus
US6224293B1 (en) * 1999-04-19 2001-05-01 Compaction America, Inc. Variable amplitude vibration generator for compaction machine
WO2002000359A1 (de) * 2000-06-29 2002-01-03 Riedl, Franz Vibrationserreger mit amplitudenverstellung
US20110158745A1 (en) * 2009-12-31 2011-06-30 Caterpillar Paving Products Inc. Vibratory system for a compactor
CN105268621A (zh) * 2015-11-11 2016-01-27 王存伟 无级变幅振动器
CN105268621B (zh) * 2015-11-11 2018-06-05 王存伟 无级变幅振动器
US9765534B1 (en) * 2016-11-14 2017-09-19 Albert DiLuzio Concrete work tool, method of making, and applications
CN112619755A (zh) * 2020-12-24 2021-04-09 东台市鑫富达机械有限公司 一种用于粮食物料处理的粉碎设备
CN113235364A (zh) * 2021-06-18 2021-08-10 浙江奥桑机械设备有限公司 一种压路机驾驶室多重减震装置

Also Published As

Publication number Publication date
JPS493099B1 (de) 1974-01-24
SE363867B (de) 1974-02-04
BE735316A (de) 1969-12-01
CH490897A (de) 1970-05-31
NL6909931A (de) 1969-12-31
DE1784029C3 (de) 1975-05-15
DE1784029B2 (de) 1973-10-18
DE1784029A1 (de) 1971-09-23
NO127460B (de) 1973-06-25
GB1233296A (de) 1971-05-26
CA919950A (en) 1973-01-30
FR2014437A1 (de) 1970-04-17
AT299292B (de) 1972-06-12

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