US20030118401A1 - Suspension arrangement for a compacting work machine - Google Patents
Suspension arrangement for a compacting work machine Download PDFInfo
- Publication number
- US20030118401A1 US20030118401A1 US10/028,154 US2815401A US2003118401A1 US 20030118401 A1 US20030118401 A1 US 20030118401A1 US 2815401 A US2815401 A US 2815401A US 2003118401 A1 US2003118401 A1 US 2003118401A1
- Authority
- US
- United States
- Prior art keywords
- frame
- drum
- work machine
- suspension
- compacting
- 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.)
- Abandoned
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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
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
-
- 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
- the invention relates generally to compacting work machines and more particularly to a drum suspension arrangement for a compacting work machine having improved ride and steering capability.
- Compacting work machines are commonly employed for compacting freshly laid bituminous mixtures or asphalt, soil, and other compactable materials or substrates.
- these work machines may include plate type compactors or rolling drum compactors with one or more drums.
- the drum type work machines function to compact the material over which the machine is driven.
- the drum assembly often includes a vibratory mechanism for inducing vibratory forces on the material being compacted.
- the present invention is directed at overcoming one or more of the problems as set forth above.
- a suspension arrangement for a compacting work machine having a frame.
- the suspension arrangement includes a drum having first and second ends.
- the drum defines a horizontal axis.
- a first suspension member connects the first end of the drum member to the frame and a second suspension member connects the second end of the drum member to the frame.
- the first and second suspension members allows each of the first and second ends of the drum member to oscillate about the horizontal axis.
- FIG. 1 is a diagrammatic side elevational view of a work machine embodying the present invention
- FIG. 2 shows an axial cross section view taken along line 2 - 2 through a compacting drum of the work machine of FIG. 1 embodying the present invention
- FIG. 3 is a diagrammatic front view of a compacting drum embodying the present invention.
- a compacting work machine 10 for increasing the density of a compactable material 12 or mat such as soil, gravel, or bituminous mixtures, an example of which is shown in FIG. 1.
- the compacting work machine 10 is shown as being a double drum vibratory compactor.
- a first compacting drum 14 and a second compacting drum 16 are rotatably mounted to and support a machine frame 18 of the compacting work machine 10 .
- the machine frame 18 includes a first frame 20 that supports an operator's station 22 and a second frame 24 that supports an engine 26 .
- the first and second frames 20 , 24 are pivotally coupled together by an articulating hitch 28 .
- the articulating hitch 28 is used to steer the work machine 10 by way of a fluid cylinder not shown in a known manner.
- hitch 28 is only capable of articulating about a vertical axis 29 and no other movement.
- a first and a second power source 30 , 32 are connected to the engine 26 .
- Variable displacement fluid pumps or electrical generators can be used as interchangeable alternatives for the first and second power sources 30 , 32 without departing from the present invention.
- the first compacting drum 14 includes an exemplary vibratory mechanism 34 that is operatively connected to a first motor 36 via a universal connecting shaft 38 .
- the first motor 36 is operatively connected, as by fluid conduits and control valves or electrical conductors neither of which are shown, to the first power source 30 .
- the first motor 36 supplies rotational motion to the vibratory mechanism 34 in a known manner so as to impart a vibratory force through the first compacting drum 14 to the compactable material 12 .
- the first and second compacting drums 14 , 16 could have more than one vibratory mechanism per drum.
- first and second compacting drums 14 , 16 and the first and second frames 20 , 24 are structurally and operatively similar.
- the description, construction and elements comprising the first compacting drum 14 and the first frame 20 which will now be discussed in detail and as shown in FIG. 2, applies equally to the second compacting drum 16 and the second frame 24 with like element numbers representing similar components.
- a yoke portion 40 extends downward at the outward most portion of the first frame 20 .
- Yoke portion 40 is a bifurcated member that extends downward on the outside of compacting drum 14 .
- a housing of a propel motor 42 is connected to one side of the yoke portion 40 as by fasteners.
- Propel motor 42 is positioned to extend inwardly into a cavity 44 through a bulkhead 46 in a first end 50 of the drum 14 .
- a mounting plate 52 is connected in a conventional manner to an output 54 of the propel motor 42 .
- a first suspension member 60 is connected to the mounting plate 52 as by fasteners.
- Propel motor 42 in turn is connected as by fluid lines or electrical conductors to the second power source 32 .
- the first suspension member 60 is connected to the yoke portion 40 of the first frame 20 and rotatably supports the first end 50 of the compacting drum 14 .
- the first power source 30 supplies energy to the propel motor 42 rotational force is exerted on the compacting drum 14 so as to propel the compacting work machine 10 in a desired direction and speed.
- a second suspension member 62 is connected, as by fasteners, to a mounting plate 64 that is rotatably connected to the other side of the yoke portion 40 .
- the second suspension member 62 in turn is connected in a known manner to a bulkhead 66 on a second end 68 of the first compacting drum 14 .
- the second suspension member 62 is connected to the yoke portion 40 of the frame 22 and rotatably supports the second end 68 of the compacting drum 14 .
- the first and second suspension members 60 , 62 vibrationally isolate the compacting drum 14 from the first frame 20 .
- first and second suspension members 60 , 62 are shown as being rubber isolation mounts 72 .
- first and second suspension members 60 , 62 could be springs, fluid dampening members, or any other suspension member capable of supporting the weight of work machine 10 without departing from the gist of the present invention.
- the first and second suspension members 60 , 62 include a plurality of first and second suspension members 70 , 72 .
- the first and second suspension members 60 , 62 are for example sandwich type vibration mounts, such as those offered by the Lord Corporation with durometer rating of 55 .
- a suspension arrangement 74 is provided for the compacting drum 14 from the machine frame 18 .
- drum 14 defines a horizontal axis 74 that extends from the first end 50 to the second end 68 thereof.
- the first and second suspension members 60 , 62 isolate the vibrational forces from the vibratory mechanism 32 from the rest of the compacting work machine 10 as described above. Additionally, the first and second suspension members 60 , 62 allow each of the first and second ends 50 , 68 of the compacting drum 14 to oscillate or pivotally move through an arc or angle ⁇ .
- angle ⁇ is shown exaggerated but as an example is in the range of plus or minus 10° from a horizontal position. It has been found that there are advantages for the angle ⁇ to be in the range of plus or minus 2.5° from a horizontal position.
- the suspension arrangement 74 described above provides suspension for the first and second compacting drums 14 , 16 that improves the ride for an operator and enhances steering capability. For example, when the compacting work machine 10 is maneuvered through a right turn, the weight of the machine 10 tends to list to the left, the first suspension member 60 will flex or compress and the second suspension member 62 will flex or extend. With the suspension arrangement 74 the weight shift of the work machine 10 still occurs but is one half of a machine with an oscillation joint.
- the compacting drum 14 , 16 maintains contact with the surface or mat 12 being compacted, as opposed to a full shift of the weight from the second end 68 of the compacting drum 14 , 16 and possibly even lifting the second end 68 from the mat 12 .
- first and second suspension members 60 , 62 are allowed to flex either compressing or extending to compensate for the elevational disparities much like an independent suspension.
- a suspension arrangement 74 is provided that allows the compacting work machine 10 to utilize a simple articulating hitch 28 that does not require oscillation capability.
- the suspension arrangement 74 reduces the weight imbalance on the compacting drum 14 , 16 , reduces the complexity of the hitch 28 , and reduces the weight and cost of the overall work machine 10 .
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Agronomy & Crop Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Road Paving Machines (AREA)
Abstract
A suspension arrangement is provided for a compacting drum of a compacting work machine. First and second suspension members connect first and second ends of the compacting drum to a frame of the work machine. The first and second suspension members allow the first and second ends of the compacting drum to oscillate through an angle α about a horizontal axis relative to the frame.
Description
- The invention relates generally to compacting work machines and more particularly to a drum suspension arrangement for a compacting work machine having improved ride and steering capability.
- Compacting work machines are commonly employed for compacting freshly laid bituminous mixtures or asphalt, soil, and other compactable materials or substrates. For example these work machines may include plate type compactors or rolling drum compactors with one or more drums. The drum type work machines function to compact the material over which the machine is driven. In order to more efficiently compact the material the drum assembly often includes a vibratory mechanism for inducing vibratory forces on the material being compacted.
- It is common practice in the compacting of asphalt to use work machines that includes two rotating drums to more efficiently compact the material. This is so that during each pass over the material being compacted each drum performs a portion of the compacting process. These double drum compactors either have an articulating frame or each drum has the ability to pivot about a vertical axis so that the work machine can be steered in a desired direction during operation. It is desirable to keep both drums in contact with the road surface. To accomplish this over rough terrain, an oscillation axis, us of an equalizer pin or other equalizer mechanism is added to the frame. During tight turning operations, with an articulated frame machine, the weight in the center of the machine causes uneven weight distribution across the width of the drum. When an oscillation axis is added to the articulated frame, the uneven weight distribution is only on the drum, but the magnitude of the uneven distribution is doubled. At times, during a tight turn, depending on how much weight is in the machine the inside portion of one drum can actually lift off of the material being compacted. This is contrary to the goal of finishing a smooth flat road surface.
- Previous attempts to solve this problem have included limiting the turning radius and distributing weight over the ends of the machine. These situations are contrary to the goals of the machine to have good maneuverability and compacting close to objects in front or behind the machine.
- The present invention is directed at overcoming one or more of the problems as set forth above.
- In one aspect of the present invention, a suspension arrangement is provided for a compacting work machine having a frame. The suspension arrangement includes a drum having first and second ends. The drum defines a horizontal axis. A first suspension member connects the first end of the drum member to the frame and a second suspension member connects the second end of the drum member to the frame. The first and second suspension members allows each of the first and second ends of the drum member to oscillate about the horizontal axis.
- FIG. 1 is a diagrammatic side elevational view of a work machine embodying the present invention;
- FIG. 2 shows an axial cross section view taken along line2-2 through a compacting drum of the work machine of FIG. 1 embodying the present invention; and
- FIG. 3 is a diagrammatic front view of a compacting drum embodying the present invention.
- A
compacting work machine 10, for increasing the density of acompactable material 12 or mat such as soil, gravel, or bituminous mixtures, an example of which is shown in FIG. 1. The compactingwork machine 10 is shown as being a double drum vibratory compactor. A first compactingdrum 14 and a second compactingdrum 16 are rotatably mounted to and support amachine frame 18 of the compactingwork machine 10. Themachine frame 18 includes afirst frame 20 that supports an operator'sstation 22 and asecond frame 24 that supports anengine 26. The first andsecond frames articulating hitch 28. The articulatinghitch 28 is used to steer thework machine 10 by way of a fluid cylinder not shown in a known manner. It should be noted that thehitch 28 is only capable of articulating about avertical axis 29 and no other movement. Connected to theengine 26 are a first and asecond power source second power sources - Referring now to FIG. 2, the first compacting
drum 14 includes an exemplaryvibratory mechanism 34 that is operatively connected to afirst motor 36 via a universal connectingshaft 38. Thefirst motor 36 is operatively connected, as by fluid conduits and control valves or electrical conductors neither of which are shown, to thefirst power source 30. Thefirst motor 36 supplies rotational motion to thevibratory mechanism 34 in a known manner so as to impart a vibratory force through the first compactingdrum 14 to thecompactable material 12. It should be understood that the first and second compactingdrums - In as much as, the first and second compacting
drums second frames drum 14 and thefirst frame 20, which will now be discussed in detail and as shown in FIG. 2, applies equally to the second compactingdrum 16 and thesecond frame 24 with like element numbers representing similar components. - A
yoke portion 40 extends downward at the outward most portion of thefirst frame 20.Yoke portion 40 is a bifurcated member that extends downward on the outside of compactingdrum 14. A housing of apropel motor 42 is connected to one side of theyoke portion 40 as by fasteners.Propel motor 42 is positioned to extend inwardly into acavity 44 through abulkhead 46 in afirst end 50 of thedrum 14. Amounting plate 52 is connected in a conventional manner to anoutput 54 of thepropel motor 42. Afirst suspension member 60 is connected to themounting plate 52 as by fasteners.Propel motor 42 in turn is connected as by fluid lines or electrical conductors to thesecond power source 32. Thus, thefirst suspension member 60 is connected to theyoke portion 40 of thefirst frame 20 and rotatably supports thefirst end 50 of the compactingdrum 14. When thefirst power source 30 supplies energy to thepropel motor 42 rotational force is exerted on the compactingdrum 14 so as to propel the compactingwork machine 10 in a desired direction and speed. - A
second suspension member 62 is connected, as by fasteners, to a mounting plate 64 that is rotatably connected to the other side of theyoke portion 40. Thesecond suspension member 62 in turn is connected in a known manner to a bulkhead 66 on asecond end 68 of the first compactingdrum 14. Thus, thesecond suspension member 62 is connected to theyoke portion 40 of theframe 22 and rotatably supports thesecond end 68 of the compactingdrum 14. The first andsecond suspension members drum 14 from thefirst frame 20. - Still referring to FIG. 2, the first and
second suspension members rubber isolation mounts 72. However it should be understood that the first andsecond suspension members work machine 10 without departing from the gist of the present invention. Actually, the first andsecond suspension members second suspension members second suspension members suspension arrangement 74 is provided for the compactingdrum 14 from themachine frame 18. - Referring now to FIGS. 2 and 3,
drum 14 defines ahorizontal axis 74 that extends from thefirst end 50 to thesecond end 68 thereof. The first andsecond suspension members vibratory mechanism 32 from the rest of the compactingwork machine 10 as described above. Additionally, the first andsecond suspension members drum 14 to oscillate or pivotally move through an arc or angle α. As seen in FIG. 3, angle α is shown exaggerated but as an example is in the range of plus or minus 10° from a horizontal position. It has been found that there are advantages for the angle α to be in the range of plus or minus 2.5° from a horizontal position. - Industrial Applicability
- In operation, the
suspension arrangement 74 described above provides suspension for the first and second compacting drums 14,16 that improves the ride for an operator and enhances steering capability. For example, when the compactingwork machine 10 is maneuvered through a right turn, the weight of themachine 10 tends to list to the left, thefirst suspension member 60 will flex or compress and thesecond suspension member 62 will flex or extend. With thesuspension arrangement 74 the weight shift of thework machine 10 still occurs but is one half of a machine with an oscillation joint. In this manner the compactingdrum mat 12 being compacted, as opposed to a full shift of the weight from thesecond end 68 of the compactingdrum second end 68 from themat 12. - Additionally, as the compacting work machine encounters disparities in the surface being compacted, such as elevational differences between the first and second ends50,68 of the compacting
drum second suspension members - Thus, a
suspension arrangement 74 is provided that allows the compactingwork machine 10 to utilize a simple articulatinghitch 28 that does not require oscillation capability. Thesuspension arrangement 74 reduces the weight imbalance on the compactingdrum hitch 28, and reduces the weight and cost of theoverall work machine 10.
Claims (13)
1. A suspension arrangement for a compacting work machine having a frame, said suspension arrangement comprising:
a drum having first and second ends, said drum defining a horizontal axis;
a first suspension member connecting said first end of said drum to said frame;
a second suspension member connecting said second end of said drum to said frame; and
said first and second suspension members allowing each of said first and second ends of said drum to oscillate through an angle α about the horizontal axis relative to the frame.
2. The suspension arrangement of claim 1 , wherein the angle α is in the range of plus or minus 10 degrees.
3. The suspension arrangement of claim 2 , wherein the angle α is in the range of plus or minus 2.5 degrees.
4. The suspension arrangement of claim 1 , including a plurality of suspension members connecting said first end of said drum to said frame and a plurality of suspension members connecting said second end of said drum to said frame.
5. The suspension arrangement of claim 4 , wherein each of said plurality of suspension members is a rubber mount.
6. A work machine, comprising:
a first frame;
a second frame;
an articulating hitch pivotally connecting said first frame to said second frame; and
a suspension arrangement as set forth in claim 1 .
7. The work machine of claim 6 , wherein said articulating hitch defines pivotal movement only about a vertical axis.
8. A work machine for compacting a compactable material, said work machine comprising:
a first frame;
a second frame;
an articulating hitch pivotally connecting said first frame to said second frame;
a first drum defining a horizontal axis;
a first pair of suspension members connecting said first drum to said first frame;
a second drum defining a horizontal axis;
a second pair of suspension members connecting said second drum to said second frame; and
said first and second pair of suspension members allowing each of said first and second drums to oscillate through an angle α about the horizontal axis relative to the first and second frames.
9. The work machine of claim 8 , wherein said articulating hitch defines pivotal movement only about a vertical axis.
10. The work machine of claim 8 , wherein the angle α is in the range of plus or minus 10 degrees.
11. The work machine of claim 10 , wherein the angle α is in the range of plus or minus 2.5 degrees.
12. The work machine of claim 8 , including a plurality of suspension members connecting said first drum to said first frame and a plurality of suspension members connecting said second drum to said second frame.
13. The work machine of claim 8 , wherein each of said plurality of suspension members is a rubber mount.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/028,154 US20030118401A1 (en) | 2001-12-20 | 2001-12-20 | Suspension arrangement for a compacting work machine |
DE10256445A DE10256445A1 (en) | 2001-12-20 | 2002-12-03 | Suspension arrangement for a compaction machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/028,154 US20030118401A1 (en) | 2001-12-20 | 2001-12-20 | Suspension arrangement for a compacting work machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030118401A1 true US20030118401A1 (en) | 2003-06-26 |
Family
ID=21841868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/028,154 Abandoned US20030118401A1 (en) | 2001-12-20 | 2001-12-20 | Suspension arrangement for a compacting work machine |
Country Status (2)
Country | Link |
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US (1) | US20030118401A1 (en) |
DE (1) | DE10256445A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100098521A1 (en) * | 2008-10-14 | 2010-04-22 | Clark Equipment Company | Skid Steer Loaders with Variable Isolation on Vibratory Roller |
US20140083786A1 (en) * | 2012-09-24 | 2014-03-27 | Caterpillar Paving Products Inc. | Engine Hot Air Deflector |
US9550522B2 (en) * | 2015-02-19 | 2017-01-24 | Caterpillar Paving Products Inc. | Compactor turning speed limiter |
CN110130189A (en) * | 2019-05-15 | 2019-08-16 | 吕若飞 | A kind of small-sized pavement maintenance compacting machine |
WO2020032974A1 (en) * | 2018-08-10 | 2020-02-13 | Volvo Construction Equipment Ab | Directional vibration control apparatus for compactor drum with single eccentric |
RU203323U1 (en) * | 2020-12-02 | 2021-03-31 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный лесотехнический университет" | ROAD ROLLER ROLLER |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004034927A1 (en) * | 2004-07-09 | 2006-02-09 | Rmu Richard Mayer Umweltschutzbau Gmbh & Co.Kg | System for compacting layers of sand and ballast especially for landfill has a thin mineral layer rolled followed by compaction using a vibrating drive |
-
2001
- 2001-12-20 US US10/028,154 patent/US20030118401A1/en not_active Abandoned
-
2002
- 2002-12-03 DE DE10256445A patent/DE10256445A1/en not_active Withdrawn
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100098521A1 (en) * | 2008-10-14 | 2010-04-22 | Clark Equipment Company | Skid Steer Loaders with Variable Isolation on Vibratory Roller |
CN102187037A (en) * | 2008-10-14 | 2011-09-14 | 克拉克设备公司 | Skid steer loaders with variable isolation on vibratory roller |
US20140083786A1 (en) * | 2012-09-24 | 2014-03-27 | Caterpillar Paving Products Inc. | Engine Hot Air Deflector |
US8807255B2 (en) * | 2012-09-24 | 2014-08-19 | Caterpillar Paving Products Inc. | Engine hot air deflector |
US9550522B2 (en) * | 2015-02-19 | 2017-01-24 | Caterpillar Paving Products Inc. | Compactor turning speed limiter |
WO2020032974A1 (en) * | 2018-08-10 | 2020-02-13 | Volvo Construction Equipment Ab | Directional vibration control apparatus for compactor drum with single eccentric |
US11698119B2 (en) | 2018-08-10 | 2023-07-11 | Volvo Construction Equipment Ab | Directional vibration control apparatus for compactor drum with single eccentric |
CN110130189A (en) * | 2019-05-15 | 2019-08-16 | 吕若飞 | A kind of small-sized pavement maintenance compacting machine |
RU203323U1 (en) * | 2020-12-02 | 2021-03-31 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный лесотехнический университет" | ROAD ROLLER ROLLER |
Also Published As
Publication number | Publication date |
---|---|
DE10256445A1 (en) | 2003-07-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CATERPILLAR PAVING PRODUCTS INC., MINNESOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MAGEE, KEVIN J.;SWANSON, DONALD J.;REEL/FRAME:012416/0256;SIGNING DATES FROM 20011214 TO 20011217 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |