US3899262A - Earth tamper - Google Patents

Earth tamper Download PDF

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Publication number
US3899262A
US3899262A US389258A US38925873A US3899262A US 3899262 A US3899262 A US 3899262A US 389258 A US389258 A US 389258A US 38925873 A US38925873 A US 38925873A US 3899262 A US3899262 A US 3899262A
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US
United States
Prior art keywords
tamper
driving rods
foot plate
crankshaft
plates
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
US389258A
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English (en)
Inventor
Shinzo Yamamoto
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.)
NIHON KENSETSU KIKAI SANGYO KK
Original Assignee
NIHON KENSETSU KIKAI SANGYO KK
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 NIHON KENSETSU KIKAI SANGYO KK filed Critical NIHON KENSETSU KIKAI SANGYO KK
Application granted granted Critical
Publication of US3899262A publication Critical patent/US3899262A/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
    • E02D3/068—Vibrating apparatus operating with systems involving reciprocating masses

Definitions

  • each of the 68] 715 9/1901 La ne 404/133 upper driving rods is transmitted to the corresponding 890:659 (W908 :Qb X lower driving rod through said spring so that foot 1,129,230 2/1915 Powers v 404/133 plates installed respectively at the lower end of each 2304 02 6/1940 404 133 X of the lower driving rods are alternately reciprocated 2.646129 7/1953 Godenir 404/113 to ensure efficient use of the engine rotation and the 2753.771 7/1956 Brown v 404/133 weight of the tamper per se while maintaining the 3345.050 7/1958 wacker at 404/133 X tamper stable and lowering the noise level.
  • This invention relates to an earth tamper, and more particularly an earth tamper of two-vibration system which is capable of continuously tamping the earth for compacting it.
  • An earth tamper comprising a simple vibration system is known, which has a single vertically reciprocating rod for compacting the earth by the vibration and As a result, the driving engine is damaged or otherwise broken comparatively soon after the beginning of use of the simple vibration tamper.
  • an object of the present invention is to obviate the aforesaid difficulties of the conventional earth tamping machine of the simple vibration system.
  • the tamper comprises a rotary shaft which is driven by an engine through a transmission and extends through a gear box, a pair of pinions secured to the shaft, a pair of driving gears rotatably mounted on supporting shafts secured to the gear box so as to mesh with the pinions, a crankshaft having two 180 offset arms which are rotatably carried by the driving gears, the crankshaft having an axis of rotation which is parallel to that of the rotary shaft, a pair of upper driving rods pivotally connected to the two arms of the crankshaft and extending into two guide cylinders, respectively, compression springs disposed within the guide cylinders so as to be compressed by the upper driving rods, piston plates slidably disposed within the
  • the earth tamper of the present invention With the two tamping foot plates, the earth tamper of the present invention becomes very stable, as in the case of a man walking with two feet.
  • the construction of the earth tamper of the present invention ensures efficient use of the engine rotation and the weight of the tamper per se. Accordingly, the overall efficiency of the earth tamping operation is improved, and it is also possible to lower the noise level.
  • 1 is a driving engine
  • 2 is a driving pulley
  • 3 is a rotary shaft
  • 4 are pinions coaxially secured to the shaft 3 with a spacing therebetween
  • 5 is a crankshaft.
  • the aforesaid pinions and the shafts are housed in a gear box 6.
  • the driving pulley 2 is secured to the rotary shaft 3 at the outside of the gear box 6, so that the pulley 2 can be driven by the engine 1 through a transmission consisting of an engine pulley 7 and a transmission belt 8.
  • the crankshaft S has two 180 offset arms which are rotatably carried by driving gears 11], 10, respectively.
  • the driving gears 10, 10' The driving gears 10, 10'
  • a pair' of vertically reciprocating upper driving rods 11, 11' are pivotally connected to the two offset arms of the crankshaft 5.
  • the lower ends of the upper driving rods extend into a pair of guide cylinders 12, 12', respectively.
  • the guide cylinders are integrally connected to the lower endof the gear box 6.
  • a pair of compression springs 13, 13' are placed in the guide cylinders l2 12, so that the springs may be compressed by the upper driving rods 11, 11.
  • Piston plates 15, 15' are secured to the lower ends of the upper driving rods 11, 11 so as to slidably reciprocate in the piston 12, 12, and lower springs 14, 14 are disposed between the piston plates and the lower ends of the cylinders.
  • the piston plates 15, 15' also cary lower driving rods 16, 16, respectively. Tamping foot plates 17, 17 are secured to the lower ends of the lower driving rods.
  • 18, 18 are wooden shoes of the foot plates 17, 17, 19 is a handle
  • 20 is an engine speed regulating lever
  • 21 is an engine base.
  • the engine rotation is transmitted to the rotary shaft 3 through the transmission consisting of the pulleys 2, 7 and the belt 8.
  • the pinions 4, 4' drive the cooperating driving gears 10, 10, so as to turn the crankshaft 5.
  • the upper driving rods 11, 11 are alternately reciprocated vertically.
  • the movement of the upper driving rods 11, 11' is directly transmitted to the tamping foot plates 17, 17 through the pistons 15, 15 and the lower driving rods 16, 16.
  • the springs 13, 13 and 14, 14 act to strengthen the tamping action of the foot plates 17, 17
  • the uniform rotation of the engine l is converted into alternate vertical reciprocation by the two 180 offset arms of the crankshaft 5, so as to alternately drive the two tamping foot plates 17, 17
  • a hand-guided earth tamper adapted to be moved in a forward direction and having two alternately actuatable tamping foot plates
  • a frame means a crankshaft rotatably mounted on said frame means and having two 180 offset arms, a prime mover mounted on said frame means, a transmission operably disposed between said prime mover and said crankshaft and through which said prime mover drives said crankshaft, 21 pair of upper driving rods with respective upper ends pivotally connected to said two arms of the crankshaft, two guide cylinders disposed below said crankshaft, said upper driving rods extending into said two guide cylinders respectively, piston plates slidably disposed within said cylinders, a pair of lower driving rods having upper ends secured to the piston plates so as to follow the movement of the latter, compression springs arranged between the lower ends of the upper driving rods and the piston plates, compression springs arranged between the piston plates and the lower ends of the cylinders, a leading foot plate and a trailing foot plate secured to the lower ends of

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)
US389258A 1973-02-21 1973-08-17 Earth tamper Expired - Lifetime US3899262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973021607U JPS49126303U (zh) 1973-02-21 1973-02-21

Publications (1)

Publication Number Publication Date
US3899262A true US3899262A (en) 1975-08-12

Family

ID=12059710

Family Applications (1)

Application Number Title Priority Date Filing Date
US389258A Expired - Lifetime US3899262A (en) 1973-02-21 1973-08-17 Earth tamper

Country Status (2)

Country Link
US (1) US3899262A (zh)
JP (1) JPS49126303U (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439057A (en) * 1982-04-07 1984-03-27 Gale Sprague Soil compactor drive assembly
US4507014A (en) * 1983-01-04 1985-03-26 Abg-Werke Gmbh Consolidating plank for a highway finishing machine
FR2771426A1 (fr) * 1997-11-26 1999-05-28 Lancier Masch Peter Dispositif de compactage du sol
US6327923B1 (en) * 1997-04-09 2001-12-11 Wacker-Werke Gmbh & Co. Kg Working tool, in particular soil rammer or hammer
ITPN20110067A1 (it) * 2011-10-11 2013-04-12 Giovanni Zago Apparecchiatura di perforazione-demolizione pluri-cilindrica ad azione elettro-pneumatica
US11274403B2 (en) * 2018-01-29 2022-03-15 Sakai Heavy Industries, Ltd. Rammer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108589480B (zh) * 2018-05-11 2020-12-18 杭州富阳鼎杰石材有限公司 一种建筑用夯实机

Citations (11)

* 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.
US890659A (en) * 1907-09-10 1908-06-16 Anton F Kellner Tamping-machine.
US1129230A (en) * 1913-06-28 1915-02-23 Anthony J Powers Tamping-machine.
US2204021A (en) * 1937-09-27 1940-06-11 Carl H Derrickson Concrete forming machine
US2646729A (en) * 1946-11-11 1953-07-28 Cementation Co Ltd Tamping machine
US2753771A (en) * 1952-07-05 1956-07-10 Howard D Brown Power tamper
US2845050A (en) * 1954-11-15 1958-07-29 Wacker Hermann Driven hand-guided working devices for reciprocating movements
US3308729A (en) * 1963-08-02 1967-03-14 Hermann Wacker And Peter Wacke Reciprocating system for manually guided motor driven working device
US3538821A (en) * 1967-10-21 1970-11-10 Losenhausen Maschinenbau Ag Implement,in particular a tamper,with vibrating tool
US3592111A (en) * 1969-04-01 1971-07-13 Technology Inc Const Compactor
US3630127A (en) * 1969-05-21 1971-12-28 Hiroshi Matsumoto Tamping machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967868C (de) * 1955-03-31 1957-12-19 Robel & Co G Schlaggeraet
US3472135A (en) * 1967-10-23 1969-10-14 Nevitt Mfg Co Inc Earth compacting apparatus

Patent Citations (11)

* 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.
US890659A (en) * 1907-09-10 1908-06-16 Anton F Kellner Tamping-machine.
US1129230A (en) * 1913-06-28 1915-02-23 Anthony J Powers Tamping-machine.
US2204021A (en) * 1937-09-27 1940-06-11 Carl H Derrickson Concrete forming machine
US2646729A (en) * 1946-11-11 1953-07-28 Cementation Co Ltd Tamping machine
US2753771A (en) * 1952-07-05 1956-07-10 Howard D Brown Power tamper
US2845050A (en) * 1954-11-15 1958-07-29 Wacker Hermann Driven hand-guided working devices for reciprocating movements
US3308729A (en) * 1963-08-02 1967-03-14 Hermann Wacker And Peter Wacke Reciprocating system for manually guided motor driven working device
US3538821A (en) * 1967-10-21 1970-11-10 Losenhausen Maschinenbau Ag Implement,in particular a tamper,with vibrating tool
US3592111A (en) * 1969-04-01 1971-07-13 Technology Inc Const Compactor
US3630127A (en) * 1969-05-21 1971-12-28 Hiroshi Matsumoto Tamping machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439057A (en) * 1982-04-07 1984-03-27 Gale Sprague Soil compactor drive assembly
US4507014A (en) * 1983-01-04 1985-03-26 Abg-Werke Gmbh Consolidating plank for a highway finishing machine
US6327923B1 (en) * 1997-04-09 2001-12-11 Wacker-Werke Gmbh & Co. Kg Working tool, in particular soil rammer or hammer
FR2771426A1 (fr) * 1997-11-26 1999-05-28 Lancier Masch Peter Dispositif de compactage du sol
ITPN20110067A1 (it) * 2011-10-11 2013-04-12 Giovanni Zago Apparecchiatura di perforazione-demolizione pluri-cilindrica ad azione elettro-pneumatica
US11274403B2 (en) * 2018-01-29 2022-03-15 Sakai Heavy Industries, Ltd. Rammer

Also Published As

Publication number Publication date
DE2344127B2 (de) 1977-03-17
JPS49126303U (zh) 1974-10-29
DE2344127A1 (de) 1974-08-29

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