US3847498A - Compacting device - Google Patents

Compacting device Download PDF

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Publication number
US3847498A
US3847498A US00323210A US32321073A US3847498A US 3847498 A US3847498 A US 3847498A US 00323210 A US00323210 A US 00323210A US 32321073 A US32321073 A US 32321073A US 3847498 A US3847498 A US 3847498A
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United States
Prior art keywords
unit
compacting
engine unit
links
engine
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Expired - Lifetime
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US00323210A
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English (en)
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G Grane
E Kareby
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Individual
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Individual
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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
    • E02D3/068—Vibrating apparatus operating with systems involving reciprocating masses

Definitions

  • a compacting device comprises an engine unit, a compacting unit having a tamping plate and a linkage mounting the engine unit on the tamping unit for reciprocatory movement of the tamping unit relative to the engine unit.
  • Power is transmitted between the engine unit and the compacting unit by a transmission that includes an eccentric power output element driven by the engine unit and at least one, and prefer ably two, springs connected in tension between the compacting unit and the eccentric element of the power output.
  • the linkage by which the engine unit is mounted on the tamping unit comprises two pairs of parallel links, the pairs being laterally spaced-apart and each link being pivotally connected at one end to the compacting unit and at the other end to the engine unit.
  • a portion of a controlling handle is-pivotably connected to the two links of each pair at pivot points intermediate the ends thereof, the pivot points being located on the links at points that have substantially no vertical reciprocatory motion in normal operation of the compactor.
  • the present invention relates to a compacting device of the type frequently called a soil tamper and which is employed in the compaction of soil or other earth materials, concrete, asphalt and the like.
  • the compactor is manually controlled by operating handles and comprises an engine unit and a compaction unit that are mounted for relative reciprocatory motion by a mounting linkage system.
  • the compaction unit has a tamping plate which is put in vibratory motion by a crank shaftdriven by the engine and a transmission connecting the compacting unit to the engine crank shaft.
  • a compacting device in accordance with the invention, includes an improved transmission between the engine unit and the compacting unit, the transmission including an eccentric power output element driven by the engine crank shaft and one or more springs connectedunder tension between the eccentric element and the compacting unit.
  • the eccentric element is a pin or stud mounted eccentrically on a power output shaft driven by the engine, and two springs connect the eccentric pin to the compacting unit, each of the two springs being journaled on the eccentric pin or stud at one end and being connected under tension to'locations in spaced relation to'the eccentric pin on a frame or housing that extends generally upwardly from the tamping plate.
  • the compacting device further includes a pair of handles, each of which is pivotably connected to the links of each of the pairs of links by which the engine unit is mounted on the compactingunit.
  • the pivot points where the handles are connected to the respective links are located at locations on the links that are subject to substantially no reciprocatory movement in normal operation of the compactor.
  • a compacting device of the present invention is a reduction in the height of the device, which is made possible by connecting the transmission springs directly between the compacting unit and the eccentric pin or stud-on the crank shaft. No intermediate connecting rod is employed.
  • the connection of the handle tothe connecting links between the engine unit and the compacting unit at points that are subject to no substantial ancilliatory movement is highly advantageous in that it considerably reduces vibrations or oscillations in the handles and thereby makes it easier and less'strenuous to operate the device.
  • the embodiment of a compacting device includes anengine 1 having a-generally downwardly extending housing 2 containing a power output transmission that includes an output shaft 4 journaled in bearings 3 in the housing.
  • the output shaft 4 is provided with an eccentric stud or pin 5.
  • the engine 1, frame 2 and output shaft 4 make up the engine unit of the compacting device, and that unit is connected by two pairs of links (links 7 and 8 on the near side in the drawing and similar links, which are not visible, on the far side) to a compacting unit that is composed of a generally vertical bracket or housing l0and a tamping plate 9 mounted on the lower end of the housing 10.
  • the linkage by which the engine unit is connected to the compacting unit is described in greater detail below.
  • Reciprocatory motion of the compacting unit relative to the engine unit is provided by a transmission composed of two springs 11 and 12 mounted within'the casing 10 and substantially coaxially oriented relative to each other.
  • One of the springs is secured at its lower end 13 to the bottom of the casing and at its upper end 14 to a holder 6 that is journaled on the eccentric pin or stud 5 on the output shaft 4.
  • the other spring 12 is secured at its upper end 15 to the upper part of the housing 10 and at its lower end 16 to the holder 6.
  • Both of the springs are connected under tension between the holder 6 and the housing 10; It will be observed in the drawing that the housing 10 extends upwardly a substantial distance above the output shaft 4, is located generally forwardly of the engine unit and receives the eccentric'pin 5 in a location substantially along the common axis of the two springs 11 and 12.
  • the two pairs'of links by which the engine'unit is mounted on the compacting unit straddle thehousing 2 associated with the engine unit andthe housing'l0 of the compacting unit.'(The two links'making up the second pair that are on the oppositeside' of the unit from that shown in the drawing are not visible in 'theldrawing.)
  • the links of each pair are parallel to each other, and each is pivotably connected, at oneend at respective pivot points 17 and 18 to the housing 2 of the engine unit and at the other end to-the housing 10 of the compacting unit at pivot point 20 (the other pivot point not being shown in the drawing).
  • a handle 24 by which the compacting unit is manually operated and controlled is pivotably connected at pivot points 22v and 23 to the respective links 7 and'8.
  • a similar handle (not shown in the drawings).is pivotably connected at points corresponding to the points 22 and 23 associated with the other pair of links on the other side of the housing I 2.
  • the location of the pivot points bywhich the handles are connected to the links is important and may be 'better understood in conjunction with the following'description of the manner in which the compacting device operates.
  • the engine 1 drives theoutput shaft 4 and produces eccentric orbital motion of the pin 5 on the output shaft about the axis of the shaft. Consequently, the springs 11 and 12 are alternately subjected to increases inthe tensile forces developed therein,-and such alternating increase in the tensile forcein each spring is transmitted to the housing 10 and, in turn, to the-tamping plate 9. Accordingly, the tamping plate is subject to. generally verticaltamping motion. More precisely, thecompacting unit oscillates vertically relative to the engine unit, but both the compacting unitand the engine unit actually oscillate vertically. Generally, the magnitude of vertical oscillatory motion of the engine unit is somewhat less than that of the compacting unit.
  • a compacting device constructed in accordance with the invention is free of any additional linkage between the output shaft 4 and the compacting unit other than the tensioned springs 11 and 12.: Furthermore, the transmission system based on tensioned springs connected directly between a journaled holder on an eccentric pin driven by the output shaft eliminates any requirement for a sliding connection to accommodate the transverse motions involved in the orbital motion of the eccentric pin. All transverse motion is taken up by the flexibility and extensibility of the springs and by pivotal attachment of the upper end of the upper spring and the lower end of the lower spring to the housing. Consequently the tendency for lateral vibration to be imparted to the compacting unit is at a minimum. Further notable advantages are provided by the invention in that the handle is not subjected to any substantial vertical oscillatory motion, thereby making the compacting unit easier and less fatiguing to operate.
  • a compacting device comprising: an engine unit having a power output shaft; a compacting unit including a tamping plate and a structural member affixed to the plate and extending in a generally upward direction from the plate;
  • mounting means for mounting the engine unit on the structural member of the compacting unit for oscillatory movement of the compacting unit relative to the engine unit, the engine unit being positioned by the mounting means such that the output shaft thereof is located intermediate the ends of the structural member and is oriented with its axis generally transverse to the structural member;
  • the power transmission means for transmitting power from the engine unit to the compacting unit to establish oscillatory movement of the compacting unit relative to the engine unit, the power transmission means including an eccentric pin connected to the power output shaft of the engine unit for rotation therewith and at least two springs, one end of each spring being pivotally connected directly to the eccentric pin and the other ends of the respective springs being connected under tension to points adjacent opposite ends of the structural member of the compacting unit.
  • the mounting means includes two pairs of links, the links of each pair being generally parallel and spaced generally vertically apart (considering the tamping plate as horizontal) and the pairs being spaced apart laterally,'each link being pivotally connected at one end to the compacting unit structural member and at the other end to the engine unit, and further comprising a handle unit having spaced elements pivotally coupled to all of the links at pivot points intermediate the pivotal connections to the engine unit and the compacting unit.
  • the structural member of the compacting unit is a housing extending generally upwardly from the tamping plate, the housing including a portion disposed forwardly of the engine unit and a substantial distance above the output shaft of the engine unit, the output shaft extending into a space defined by the housing intermediate the ends thereof; and wherein the springs are enclosed within the housing.

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)
  • Road Paving Machines (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US00323210A 1972-01-13 1973-01-12 Compacting device Expired - Lifetime US3847498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7200346A SE370969B (zh) 1972-01-13 1972-01-13

Publications (1)

Publication Number Publication Date
US3847498A true US3847498A (en) 1974-11-12

Family

ID=20256412

Family Applications (1)

Application Number Title Priority Date Filing Date
US00323210A Expired - Lifetime US3847498A (en) 1972-01-13 1973-01-12 Compacting device

Country Status (5)

Country Link
US (1) US3847498A (zh)
JP (1) JPS5538444B2 (zh)
DE (1) DE2262281C3 (zh)
GB (1) GB1352492A (zh)
SE (1) SE370969B (zh)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015909A (en) * 1976-01-24 1977-04-05 Shinzo Yamamoto Tamping machine
US4104001A (en) * 1977-01-22 1978-08-01 Robert Bosch Gmbh Reciprocating tamping tool
US6302622B1 (en) * 1999-03-26 2001-10-16 Mikasa Sangyo Co., Ltd. Tamping rammer
WO2003012205A1 (de) * 2001-07-31 2003-02-13 Wacker Construction Equipment Ag Stampfer mit schwingungsarmem führungsbügel
US20090214295A1 (en) * 2008-02-26 2009-08-27 Lesche Peter W Tamper device with replaceable tool head assembly
US20120076583A1 (en) * 2010-09-23 2012-03-29 Bomag Gmbh vibration tamper for compacting subsoil
US20140262400A1 (en) * 2011-10-06 2014-09-18 Wacker Neuson Produktion GmbH & Co., KG Electric tool having a protective hood
US20160032548A1 (en) * 2014-07-31 2016-02-04 Wacker Neuson Produktion GmbH & Co. KG Soil Compacting Device Having Spring Suspension and Guiding
US9920491B1 (en) * 2016-12-12 2018-03-20 Caterpillar Inc. Plate compactor with interchangeable edges
US20180135268A1 (en) * 2015-05-18 2018-05-17 M-B-W, Inc. Percussion Mechanism for a Pneumatic Pole or Backfill Tamper
CN112921717A (zh) * 2021-01-29 2021-06-08 伯恩重工机械(苏州)有限公司 一种偏心式捣固镐

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE410873B (sv) * 1977-04-14 1979-11-12 Dynapac Maskin Ab Vibratorstamp
CN115247416A (zh) * 2021-12-27 2022-10-28 王雪 一种土木工程用地基夯实装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US681715A (en) * 1899-02-25 1901-09-03 Mahlon E Layne Machine for tamping concrete.
US3109354A (en) * 1961-01-03 1963-11-05 Jay Corp Tamping device
US3308729A (en) * 1963-08-02 1967-03-14 Hermann Wacker And Peter Wacke Reciprocating system for manually guided motor driven working device
US3308728A (en) * 1964-08-28 1967-03-14 Gerald H Brown Tamping machine
US3635133A (en) * 1969-10-29 1972-01-18 Racine Federated Ind Corp Mounting for compactors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US681715A (en) * 1899-02-25 1901-09-03 Mahlon E Layne Machine for tamping concrete.
US3109354A (en) * 1961-01-03 1963-11-05 Jay Corp Tamping device
US3308729A (en) * 1963-08-02 1967-03-14 Hermann Wacker And Peter Wacke Reciprocating system for manually guided motor driven working device
US3308728A (en) * 1964-08-28 1967-03-14 Gerald H Brown Tamping machine
US3635133A (en) * 1969-10-29 1972-01-18 Racine Federated Ind Corp Mounting for compactors

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015909A (en) * 1976-01-24 1977-04-05 Shinzo Yamamoto Tamping machine
US4104001A (en) * 1977-01-22 1978-08-01 Robert Bosch Gmbh Reciprocating tamping tool
US6302622B1 (en) * 1999-03-26 2001-10-16 Mikasa Sangyo Co., Ltd. Tamping rammer
WO2003012205A1 (de) * 2001-07-31 2003-02-13 Wacker Construction Equipment Ag Stampfer mit schwingungsarmem führungsbügel
US20040234337A1 (en) * 2001-07-31 2004-11-25 Dirk Burkert Stamper comprising a low-oscillation guiding handle
US20090214295A1 (en) * 2008-02-26 2009-08-27 Lesche Peter W Tamper device with replaceable tool head assembly
US7740416B2 (en) * 2008-02-26 2010-06-22 Lesche Peter W Tamper device with replaceable tool head assembly
US8491222B2 (en) * 2010-09-23 2013-07-23 Bomag Gmbh Vibration tamper for compacting subsoil
US20120076583A1 (en) * 2010-09-23 2012-03-29 Bomag Gmbh vibration tamper for compacting subsoil
US20140262400A1 (en) * 2011-10-06 2014-09-18 Wacker Neuson Produktion GmbH & Co., KG Electric tool having a protective hood
US20160032548A1 (en) * 2014-07-31 2016-02-04 Wacker Neuson Produktion GmbH & Co. KG Soil Compacting Device Having Spring Suspension and Guiding
US9695566B2 (en) * 2014-07-31 2017-07-04 Wacker Neuson Produktion GmbH & Co. KG Soil compacting device having spring suspension and guiding
US20180135268A1 (en) * 2015-05-18 2018-05-17 M-B-W, Inc. Percussion Mechanism for a Pneumatic Pole or Backfill Tamper
US10781566B2 (en) * 2015-05-18 2020-09-22 M-B-W, Inc. Percussion mechanism for a pneumatic pole or backfill tamper
US12012714B2 (en) 2015-05-18 2024-06-18 M-B-W, Inc. Vibration isolators and tampers
US9920491B1 (en) * 2016-12-12 2018-03-20 Caterpillar Inc. Plate compactor with interchangeable edges
CN112921717A (zh) * 2021-01-29 2021-06-08 伯恩重工机械(苏州)有限公司 一种偏心式捣固镐

Also Published As

Publication number Publication date
DE2262281B2 (de) 1977-10-06
DE2262281A1 (de) 1973-07-19
JPS5538444B2 (zh) 1980-10-04
JPS4879406A (zh) 1973-10-24
DE2262281C3 (de) 1978-05-24
GB1352492A (en) 1974-05-08
SE370969B (zh) 1974-11-04

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