US3603226A - Apparatus for compacting a mass of granular material - Google Patents
Apparatus for compacting a mass of granular material Download PDFInfo
- Publication number
- US3603226A US3603226A US836707A US3603226DA US3603226A US 3603226 A US3603226 A US 3603226A US 836707 A US836707 A US 836707A US 3603226D A US3603226D A US 3603226DA US 3603226 A US3603226 A US 3603226A
- Authority
- US
- United States
- Prior art keywords
- mass
- compacting
- backup roll
- rolls
- granular material
- 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
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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
- E02D3/026—Improving by compacting by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers
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- 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
- E01C19/236—Construction of the rolling elements, e.g. surface configuration, rolling surface formed by endless track
Definitions
- Greiner 94/50 [73] Assignee Rotary Profile Anstalt 2,938,439 5/1960 Robison 94/50 Vaduz, Liechtenstein 3,269,285 8/1966 Lathers 94/50 [32] Priority Feb. 14, 1966 3,276,337 10/1966 Gardner 94/50 [33] South Africa 3,483,806 12/1969 Williamson 94/50 [3] l 66/804 Primary Examiner-Jacob L.
- This invention relates to apparatus for compacting a mass of granular material which mass may be the ground or a road or concrete bodies before these concrete bodies have set.
- a road roller 11 having a body 12 carried at its rear end by ground engaging wheels 14 and having at its front end a large backup roll 15.
- a number of small compacting rolls l6 lie in contact with the backup roll 15. These rolls 16 roll in line contact on and orbit the backup roll and are held in relation thereto by any con ventional means.
- the orbital rolls are well known in the steel mill rolling art, in which small rolls are connected together by a cage and orbit around a backup roll, as described for example in The Rolling of Strip, Sheet and Plate", by E. C. Larke, 2nd Edition, Chapman & Hall, at pages 6l-65, and references cited therein.
- the orbiting of the rolls 16 is meant that their axes follow a path 18 about backup roll 15, at the same time that the rolls 16 rotate about their own axes.
- the speed and direction of movement of these rolls 16 is independent of the speed and direction of the road roller 1 l.
- the weight of the road roller 11 causes the backup roll 15 to be forced under gravity towards the ground under considerable pressure and this is in turn transferred to the smaller diameter rolls 16 which thus apply a localized high intensity pressure to the surface of a road 17 to compact the road 17.
- Locking means may be provided so that when the road roller crosses a very soft terrain the rolls 16 may be locked to the backup roll 15.
- the result is that the force applied to the road surface over a small area generates very high pressures, although the force is itself not of great magnitude and if applied over all but a small surface area of the road would produce no significant effect.
- the progressive production of the high pressures along the surface causes high compaction of the earth and densities it to better effect than is possible by vibration or tamping,
- Apparatus for compacting a mass of granular material comprising a vehicle body, ground engaging wheels at one end of the body, a backup roll carried by the body at the other end thereof, a plurality of compacting rolls of smaller diameter than the backup roll, orbiting the backup roll in line contact therewith and successively engaging the mass to compact it.
Abstract
This invention relates to methods of and apparatus for compacting ground, roads and the like. The preferred apparatus comprises a road roller having small diameter ground engaging rolls rolling around a cylindrical backup roll located at the front of the road roller.
Description
United States Patent 1 1 3,603,226
[72] Inventor Jacob Marcovitch [51] Int. Cl EOlc 19/26 Johannesburg, South Africa [50] Field of Search 94/50 21 A I. No. 836,707 i 1 Fi l d June 26, 1969 1 References Clted I Division ol'Ser. No. 615,613, Feb. 13, 1967, UNITED STATES PATENTS Pat. No. 3533159 l,955,224 4/1934 Brown 94/50 [45] Patented Sept. 7, 1971 2.484385 10/1949 Greiner 94/50 [73] Assignee Rotary Profile Anstalt 2,938,439 5/1960 Robison 94/50 Vaduz, Liechtenstein 3,269,285 8/1966 Lathers 94/50 [32] Priority Feb. 14, 1966 3,276,337 10/1966 Gardner 94/50 [33] South Africa 3,483,806 12/1969 Williamson 94/50 [3] l 66/804 Primary Examiner-Jacob L. Nackenoff Attorney-Young & Thompson ABSIRA t th d APPARATUS FOR COMPAGING A MASS 0F aratus foiorm ct i r dz d l zaz s fld t lie 1?: of an ap TERIAL P P g g g The preferred apparatus compnses a road roller havmg small diameter ground engaging rolls rolling around a cylindri- {52} US. Cl 94/50 cal backup roll located at the front of the road roller.
PATENTEU SEP 7197: 3.603.226
(#2005 M/zlewwrcl APPARATUS FOR COMPACTING A MASS OF GRANULAR MATERIAL This application is divided from my copending application Ser. No. 6l5,6l3 filed Feb. 13, 1967 and entitled PROFIL- ING OF WORKPIECES," now US. Pat. No. 3,533,259.
This invention relates to apparatus for compacting a mass of granular material which mass may be the ground or a road or concrete bodies before these concrete bodies have set.
It is an object of the invention to provide such apparatus which can apply a very high degree of compaction to the mass. it is a further object of the invention to provide apparatus which will knead or pummel the mass progressively along its surface.
An embodiment of the invention will now be described by way of example with reference to the accompanying drawing is a diagrammatic side view of a road roller embodying the invention.
Referring now to the drawing there is shown a road roller 11 having a body 12 carried at its rear end by ground engaging wheels 14 and having at its front end a large backup roll 15. A number of small compacting rolls l6 lie in contact with the backup roll 15. These rolls 16 roll in line contact on and orbit the backup roll and are held in relation thereto by any con ventional means. The orbital rolls are well known in the steel mill rolling art, in which small rolls are connected together by a cage and orbit around a backup roll, as described for example in The Rolling of Strip, Sheet and Plate", by E. C. Larke, 2nd Edition, Chapman & Hall, at pages 6l-65, and references cited therein. By the orbiting of the rolls 16 is meant that their axes follow a path 18 about backup roll 15, at the same time that the rolls 16 rotate about their own axes. The speed and direction of movement of these rolls 16 is independent of the speed and direction of the road roller 1 l.
The weight of the road roller 11 causes the backup roll 15 to be forced under gravity towards the ground under considerable pressure and this is in turn transferred to the smaller diameter rolls 16 which thus apply a localized high intensity pressure to the surface of a road 17 to compact the road 17.
Locking means may be provided so that when the road roller crosses a very soft terrain the rolls 16 may be locked to the backup roll 15.
The compacting rolls 16, as they make Contact with the surface of the road 17, knead or pummel it progressively along its surface. The result is that the force applied to the road surface over a small area generates very high pressures, although the force is itself not of great magnitude and if applied over all but a small surface area of the road would produce no significant effect. The progressive production of the high pressures along the surface causes high compaction of the earth and densities it to better effect than is possible by vibration or tamping,
I claim:
1. Apparatus for compacting a mass of granular material comprising a vehicle body, ground engaging wheels at one end of the body, a backup roll carried by the body at the other end thereof, a plurality of compacting rolls of smaller diameter than the backup roll, orbiting the backup roll in line contact therewith and successively engaging the mass to compact it.
Claims (1)
1. Apparatus for compacting a mass of granular material comprising a vehicle body, ground engaging wheels at one end of the body, a backup roll carried by the body at the other end thereof, a plurality of compacting rolls of smaller diametEr than the backup roll, orbiting the backup roll in line contact therewith and successively engaging the mass to compact it.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83670769A | 1969-06-26 | 1969-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3603226A true US3603226A (en) | 1971-09-07 |
Family
ID=25272548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US836707A Expired - Lifetime US3603226A (en) | 1969-06-26 | 1969-06-26 | Apparatus for compacting a mass of granular material |
Country Status (1)
Country | Link |
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US (1) | US3603226A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5511901A (en) * | 1994-10-25 | 1996-04-30 | Ingersoll-Rand Company | Removable padfoot shell conversion device |
US20150102653A1 (en) * | 2013-10-10 | 2015-04-16 | Alan Edward LeBlanc | Scarifier |
US9255365B1 (en) * | 2014-07-24 | 2016-02-09 | Caterpillar Paving Products Inc. | Compaction system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1955224A (en) * | 1930-07-31 | 1934-04-17 | Brown Nat Elmer | Road surfacing machine |
US2484285A (en) * | 1946-09-27 | 1949-10-11 | Buffalo Springfield Roller Co | Kneading compaction lug for tamping rollers |
US2938439A (en) * | 1957-12-09 | 1960-05-31 | Fred A Robison | Earth tamping roller |
US3269285A (en) * | 1964-02-12 | 1966-08-30 | William C Lathers | Earth compacting device |
US3276337A (en) * | 1966-10-04 | Gardner rolling device | ||
US3483806A (en) * | 1968-03-04 | 1969-12-16 | American Hoist & Derrick Co | Earth compaction roll pad and method |
-
1969
- 1969-06-26 US US836707A patent/US3603226A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3276337A (en) * | 1966-10-04 | Gardner rolling device | ||
US1955224A (en) * | 1930-07-31 | 1934-04-17 | Brown Nat Elmer | Road surfacing machine |
US2484285A (en) * | 1946-09-27 | 1949-10-11 | Buffalo Springfield Roller Co | Kneading compaction lug for tamping rollers |
US2938439A (en) * | 1957-12-09 | 1960-05-31 | Fred A Robison | Earth tamping roller |
US3269285A (en) * | 1964-02-12 | 1966-08-30 | William C Lathers | Earth compacting device |
US3483806A (en) * | 1968-03-04 | 1969-12-16 | American Hoist & Derrick Co | Earth compaction roll pad and method |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5511901A (en) * | 1994-10-25 | 1996-04-30 | Ingersoll-Rand Company | Removable padfoot shell conversion device |
US20150102653A1 (en) * | 2013-10-10 | 2015-04-16 | Alan Edward LeBlanc | Scarifier |
US9145650B2 (en) * | 2013-10-10 | 2015-09-29 | Alan Edward LeBlanc | Scarifier |
US9255365B1 (en) * | 2014-07-24 | 2016-02-09 | Caterpillar Paving Products Inc. | Compaction system |
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