[go: up one dir, main page]

WO1998051866A1 - Dispositif de compactage produisant des percussions - Google Patents

Dispositif de compactage produisant des percussions Download PDF

Info

Publication number
WO1998051866A1
WO1998051866A1 PCT/GB1998/001400 GB9801400W WO9851866A1 WO 1998051866 A1 WO1998051866 A1 WO 1998051866A1 GB 9801400 W GB9801400 W GB 9801400W WO 9851866 A1 WO9851866 A1 WO 9851866A1
Authority
WO
WIPO (PCT)
Prior art keywords
compactor
drive means
impact
impact compactor
angular velocity
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.)
Ceased
Application number
PCT/GB1998/001400
Other languages
English (en)
Inventor
Eric Johnstone Cook
Christoffel Avril Mijburgh
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.)
Compaction Technology Soil Ltd
Original Assignee
Compaction Technology Soil Ltd
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 Compaction Technology Soil Ltd filed Critical Compaction Technology Soil Ltd
Priority to EP98921620A priority Critical patent/EP0983405B1/fr
Priority to JP54894198A priority patent/JP3773543B2/ja
Priority to AT98921620T priority patent/ATE215152T1/de
Priority to CA002290465A priority patent/CA2290465C/fr
Priority to DE69804443T priority patent/DE69804443T2/de
Priority to AU74407/98A priority patent/AU732609B2/en
Publication of WO1998051866A1 publication Critical patent/WO1998051866A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/235—Rolling apparatus designed to roll following a path other than essentially linear, e.g. epicycloidal
    • 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
    • E02D3/026—Improving by compacting by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers

Definitions

  • THIS invention relates to impact compactors.
  • impact compactor refers to a soil compaction machine which incorporates a rotatable, out-of-round mass that produces a series of impact blows to the soil surface when towed or otherwise driven over that surface.
  • the compactor mass of an impact compactor has multiple sides defining a series of spaced apart salient points on its periphery, each salient point being followed by a compacting face. As the mass is towed or otherwise driven over the soil surface, it rises up on each salient point and then falls forwardly and downwardly as it passes over that point, with the result that the following compacting face applies an impact blow to the soil surface.
  • the action of the mass is therefore to store potential energy as it rises up on each salient point and then to deliver this energy as an impact blow.
  • Impact compactors as described above have been found to work well in practice in achieving high levels of soil compaction, even at substantial depths below the soil surface. Problems may however be encountered in situations where the salient points tend to dig in or slide relative to the soil surface, with the result that the rotational speed of the compactor mass is reduced below normal levels, adding resistance to forward motion of the impact compactor. The problem can be compounded in situations where the impact compactor incorporates a trailing levelling blade to level the compacted soil, because the inclusion of a levelling blade also increases the resistance to forward motion of the impact compactor. . 7
  • an impact compactor comprising at least one out-of-round compactor mass which in use is movable rotationally by primary drive means, at an angular velocity suitable for normal operation, over a soil surface to apply periodic compaction blows to the soil surface, the impact compactor including auxiliary drive means arranged to operate automatically, in response to a reduction of the angular velocity of the, or each, compactor mass below an angular velocity suitable for normal operation, to apply an auxiliary rotary drive to the, or each, compactor mass to restore its angular velocity to that suitable for normal operation.
  • the preferred auxiliary drive means comprises a hydrostatic drive powered by the primary drive means and control means, which is responsive to the angular velocities of the compactor mass and of driven, ground engaging wheels of the primary drive means, for controlling the operation of the hydrostatic drive.
  • the hydrostatic drive conveniently comprises an hydraulic motor powered by an hydraulic pump which is driven in use by the primary drive means, the hydraulic motor being arranged to drive the, or each, compactor mass by chain drive means.
  • the control means may comprise a proportional valve which regulates the flow of hydraulic fluid from the hydraulic pump to the hydraulic motor under the control of a sensor and associated electronics sensitive to the angular velocities of the compactor mass and of driven, ground engaging wheels of the primary drive means.
  • the invention extends to a dual mass impact compactor comprising a pair of spaced apart compactor masses mounted fast on a common shaft for synchronous rotation.
  • the compactor masses are typically mounted on hubs at the ends of the common shaft and the chain drive means comprises a first sprocket driven by the hydrostatic motor, a chain passing about the first sprocket and about a second sprocket fast on an auxiliary shaft and means for driving the hubs off the auxiliary shaft.
  • Such means may conveniently comprise third sprockets fast with the auxiliary shaft and meshing with fourth sprockets fast with the hubs.
  • Figure 1 shows a perspective view of the chain drive and associated components of an auxiliary drive arrangement of an impact compactor according to the present invention, with the chain itself omitted in the interests of clarity of illustration;
  • Figure 2 shows a partially diagrammatic plan view of the chain drive and associated components seen in Figure 1 ;
  • Figure 3 shows a partially diagrammatic side view of the chain driven and associated components seen in Figure 1;
  • Figure 4 diagrammatically illustrates an impact compactor which incorporates the chain drive and associated components of the preceding Figures.
  • FIG 4 diagrammatically illustrates an impact compactor 10 according to the invention.
  • the impact compactor 10 is arranged to be towed by a prime mover in the form of a tractor 12, but it will be understood that the invention is also applicable to impact compactors which are self- propelled, i.e. which incorporate their own prime mover.
  • the impact compactor 10 includes a pair of three-sided compactor masses 14 of conventional design.
  • the masses 14 are mounted fast on a common shaft 16 which forms part of a tube axle assembly 18 seen in plan in Figure 2.
  • the tube axle assembly 18 includes a tube 20 to which a draglink 26 is connected, as illustrated.
  • the draglink 26 is connected by a droplink 28 ( Figure 4) to a wheeled carriage 30 which is hitched to the tractor 12.
  • the towed impact compactor 10 is of conventional design. It will also be appreciated that the traction assembly including the draglink and droplink is resilient in nature to absorb shock loading when the compactor masses are towed over the soil surface and apply impact blows thereto. Reference may be made to the disclosure in, for instance, WO 94/26985 for further details of the traction assembly for the compactor masses. What is not conventional about the impact compactor 10 is the inclusion of an auxiliary drive arrangement. This arrangement includes a positive displacement hydraulic motor 32 mounted on a mounting plate 33 connected to the draglink 26, and a chain drive indicated diagrammatically in Figure 4 by the numeral 35.
  • the chain drive includes a sprocket 34 mounted on the output shaft of the motor 32.
  • a chain 36 represented diagrammatically in Figures 2 and 3 by a broken line, passes around the sprocket 34 and around a sprocket 38 mounted on a shaft 40 which is parallel to and above the shaft 16 and which is supported in inner and outer bearings 42 and 44 carried by the tube 20 of the tube axle assembly 18.
  • the ends of the shaft 40 carry sprockets 46. Further chains 47 pass around the sprockets 46 and around sprockets 48 connected to hubs 50 on which the compactor masses 14 are mounted. The masses 14 are omitted from Figures 1 to 3 in the interests of clarity of illustration.
  • the chain drive 35 also includes chain tensioners 52, 53 and 54 to maintain proper tension in the chains 36 and 47 and an idler sprocket assembly 56.
  • the motor of the tractor motor is indicated with the reference numeral 58 and the transmission with the numeral 60.
  • Driven wheels of the tractor are indicated with the numeral 62.
  • a variable displacement hydraulic pump 64 of conventional swash plate type is driven off the transmission 60.
  • the pump 64 supplies hydraulic fluid to the motor 32 under the control of a proportional valve 66 coupled to a sensor and associated electronic control (not shown) sensitive to the rotational, i.e. angular velocity, of the masses 14 and the driven wheels 62.
  • hydraulic fluid is pumped continuously to the motor 32 by the pump 64.
  • the sensor senses a rotational velocity mismatch between the compactor masses and the driven wheels 62, i.e. the wheels turn faster than the compactor masses
  • the valve 66 under electronic control, increases the rate of flow of hydraulic fluid to the motor 32.
  • the hydraulic motor 32 accordingly exerts additional rotational torque on the compactor masses and accelerates them rotationally so that their rotational velocity catches up with that of the wheels 62.
  • a velocity mismatch may, for instance, occur if one or other of the compactor masses digs into or slips relative to the soil surface rather than rotating about the next salient point, indicated in Figure 4 with the numeral 68, or if the action of a trailing levelling blade, indicated diagrammatically in Figure 4 with the numeral 70, should excessively increase resistance to forward motion of the impact compactor.
  • valve 66 decreases the supply of hydraulic fluid to the motor 32 to normal levels, and normal progress of the compactor masses resumes.
  • the impact compactor 10 has a hydrostatic drive control which automatically supplies extra rotary power to the compactor masses in the event of a velocity mismatch.
  • the sprocket 38 is mounted on the shaft 40 via a unidirectional clutch 72 which transmits rotary motion in one direction only and which freewheels in the other direction.
  • auxiliary drive is hydrostatic in nature.
  • the chain drive could be replaced by any other suitable system including, for instance, independent hydraulic drives at the hubs of the compactor masses.
  • the invention is not limited in scope to use with towed compactor masses and is equally applicable to self-propelled impact compactors incorporating their own prime movers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Architecture (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Fertilizers (AREA)
  • Soil Working Implements (AREA)
  • Road Paving Machines (AREA)

Abstract

L'invention se rapporte à un dispositif de compactage produisant des percussions (10) et comportant une ou plusieurs masses de compactage disposées en faux-rond. Ces masses se déplacent de manière rotatoire à la surface d'un sol, et à une vitesse angulaire convenant à un fonctionnement normal, dans le but d'appliquer des percussions périodiques à la surface du sol et ce, grâce à un élément de commande principal. Lorsque l'invention concerne un dispositif de compactage produisant des percussions remorqué, l'élément de commande principal est généralement un tracteur. Ledit dispositif (10) comporte une unité de commande auxiliaire qui est conçue pour fonctionner automatiquement en réponse à une réduction de la vitesse angulaire des masses de compactage à une vitesse inférieure à la vitesse angulaire convenant à un fonctionnement normal, le rôle d'une unité de commande rotatoire auxiliaire étant de rétablir la vitesse angulaire desdites masses.
PCT/GB1998/001400 1997-05-15 1998-05-15 Dispositif de compactage produisant des percussions Ceased WO1998051866A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP98921620A EP0983405B1 (fr) 1997-05-15 1998-05-15 Compacteur à impacts
JP54894198A JP3773543B2 (ja) 1997-05-15 1998-05-15 衝撃突き固め機
AT98921620T ATE215152T1 (de) 1997-05-15 1998-05-15 Bodenverdichtungsgerät
CA002290465A CA2290465C (fr) 1997-05-15 1998-05-15 Dispositif de compactage produisant des percussions
DE69804443T DE69804443T2 (de) 1997-05-15 1998-05-15 Bodenverdichtungsgerät
AU74407/98A AU732609B2 (en) 1997-05-15 1998-05-15 Impact compactor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA97/4208 1997-05-15
ZA974208 1997-05-15

Publications (1)

Publication Number Publication Date
WO1998051866A1 true WO1998051866A1 (fr) 1998-11-19

Family

ID=25586406

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/001400 Ceased WO1998051866A1 (fr) 1997-05-15 1998-05-15 Dispositif de compactage produisant des percussions

Country Status (9)

Country Link
EP (1) EP0983405B1 (fr)
JP (1) JP3773543B2 (fr)
CN (1) CN1120270C (fr)
AT (1) ATE215152T1 (fr)
AU (1) AU732609B2 (fr)
CA (1) CA2290465C (fr)
DE (1) DE69804443T2 (fr)
ES (1) ES2175709T3 (fr)
WO (1) WO1998051866A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000028155A1 (fr) 1998-11-09 2000-05-18 Compaction Technology (Soil) Limited Rouleau de compactage
CN103485261A (zh) * 2013-10-19 2014-01-01 张建锋 一种路面加固设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017051366A1 (fr) * 2015-09-25 2017-03-30 Roger Arnold Stromsoe Compacteur à percussion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026985A1 (fr) * 1993-05-17 1994-11-24 Compaction Technology (Soil) Limited Compactage de terre
WO1996014474A1 (fr) * 1994-11-07 1996-05-17 Compaction Technology (Soil) Limited Compactage de sols

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026985A1 (fr) * 1993-05-17 1994-11-24 Compaction Technology (Soil) Limited Compactage de terre
WO1996014474A1 (fr) * 1994-11-07 1996-05-17 Compaction Technology (Soil) Limited Compactage de sols

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000028155A1 (fr) 1998-11-09 2000-05-18 Compaction Technology (Soil) Limited Rouleau de compactage
US6843615B1 (en) 1998-11-09 2005-01-18 Compaction Technology (Soil) Limited Compaction roller
CN103485261A (zh) * 2013-10-19 2014-01-01 张建锋 一种路面加固设备
CN103485261B (zh) * 2013-10-19 2015-06-03 浦江县杰浩进出口有限公司 一种路面加固设备

Also Published As

Publication number Publication date
DE69804443D1 (de) 2002-05-02
EP0983405B1 (fr) 2002-03-27
JP2001525024A (ja) 2001-12-04
ATE215152T1 (de) 2002-04-15
CA2290465C (fr) 2007-08-07
AU7440798A (en) 1998-12-08
DE69804443T2 (de) 2003-01-02
CN1120270C (zh) 2003-09-03
JP3773543B2 (ja) 2006-05-10
CN1261940A (zh) 2000-08-02
EP0983405A1 (fr) 2000-03-08
CA2290465A1 (fr) 1998-11-19
ES2175709T3 (es) 2002-11-16
AU732609B2 (en) 2001-04-26

Similar Documents

Publication Publication Date Title
US3750762A (en) Speed control system for vehicle mounting a work performing device
US4896442A (en) Trencher apparatus
CA1104983A (fr) Broyeur a dispositif alimentateur
EP0983405B1 (fr) Compacteur à impacts
US3561336A (en) Hydraulic vibratory compactor
EP0067018B1 (fr) Machine de travail de matières
US5826808A (en) Mobile compactor, pulverizer and cutting apparatus and method therefor
US3057088A (en) Portable trenching device
US3208165A (en) Earth scraper with hydraulically operated conveyor
US3738031A (en) Resiliently mounted elevator drive housing
US4793434A (en) Road finishing machine
US3222802A (en) Self-propelled vehicle and mounting for tool or implement
US3206877A (en) Propelling and operating drive for trenchers
US20050014425A1 (en) Drive system for amphibious equipment
US3526290A (en) Traction device for vehicles
GB1601239A (en) Vehicles with vehicle and auxiliary drive means
US5320448A (en) Drive mechanism for a vibratory compactor
WO2002099199A1 (fr) Dispositif et procede de regulation d'ensembles excentriques
US4038763A (en) Orbital trench forming apparatus
GB2219562A (en) Auxillary driving means in road-sweeping vehicle
EP0765773A1 (fr) Véhicule avec commande de traction
US3828560A (en) Self-propelled machine with a driven work-performing member
US1553833A (en) Excavating machine
SU861510A1 (ru) Землеройна машина
De Haan Chainline Trenchers

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 98806899.0

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1998921620

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 1998 548941

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2290465

Country of ref document: CA

Ref document number: 2290465

Country of ref document: CA

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 74407/98

Country of ref document: AU

WWP Wipo information: published in national office

Ref document number: 1998921620

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 74407/98

Country of ref document: AU

WWG Wipo information: grant in national office

Ref document number: 1998921620

Country of ref document: EP