SE458691B - Road working machine cutter - Google Patents
Road working machine cutterInfo
- Publication number
- SE458691B SE458691B SE8504296A SE8504296A SE458691B SE 458691 B SE458691 B SE 458691B SE 8504296 A SE8504296 A SE 8504296A SE 8504296 A SE8504296 A SE 8504296A SE 458691 B SE458691 B SE 458691B
- Authority
- SE
- Sweden
- Prior art keywords
- tools
- road surface
- planer
- machining
- machine
- Prior art date
Links
- 238000003754 machining Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 description 6
- 238000003801 milling Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/082—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using non-powered tools
-
- 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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
- E01C23/122—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
- E01C23/124—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus moved rectilinearly, e.g. road-breaker apparatus with reciprocating tools, with drop-hammers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/12—Apparatus or implements specially adapted for breaking, disintegrating, or loosening layers of ice or hard snow with or without clearing or removing ; Roughening ice or hard snow by means of tools
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
- E02F3/8152—Attachments therefor, e.g. wear resisting parts, cutting edges
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Road Repair (AREA)
- Soil Working Implements (AREA)
Abstract
Description
458 691 10 15 20 25 30 35 Länge användes slitelement av enkla kolstàl. Idag användes dock huvudsakligen seghärdningsstàl som har betydligt bättre nötningsmotstànd än de enkla kolstàlen. 458 691 10 15 20 25 30 35 For a long time, wear elements made of simple carbon steel were used. Today, however, mainly toughening steels are used, which have significantly better abrasion resistance than the simple carbon steels.
Under de senaste decennierna har olika förslag till bättre vägverktyg presenterats och dä ofta i form av hàrdmetall- försedda slitelement som har bestátt av hàrdmetall antingen ingjuten i en montageplatta eller fastlödd pà montageplattan.In recent decades, various proposals for better road tools have been presented, often in the form of carbide-bearing wear elements that have consisted of carbide either cast into a mounting plate or soldered to the mounting plate.
Presenterade system har dock alla den nackdelen att de är känsliga för temperaturchock och mekanisk chock och har av den anledningen endast fàtt högst marginellt användnings- omràde. Vid användning av stationära slitelement pà en i förhållande till maskinen stationär montageplatta är den verkliga hastigheten i kontaktpunkten mellan slitelement och borttransporterad vägyta lika med den nominella hastig- heten hos maskinen.However, the systems presented all have the disadvantage that they are sensitive to temperature shock and mechanical shock and have therefore only been given a highly marginal area of use. When using stationary wear elements on a mounting plate stationary in relation to the machine, the actual speed at the point of contact between the wear element and the transported road surface is equal to the nominal speed of the machine.
En ytterligare nackdel med dessa slitelement är att de har sà stora dimensioner att det sammanlagda nominella kontakt- trycket mot vägytan kräver mycket höga nominella normal- krafter för att verktyget skall tränga ned i och skära genom underlaget.A further disadvantage of these wear elements is that they have such large dimensions that the total nominal contact pressure against the road surface requires very high nominal normal forces for the tool to penetrate into and cut through the substrate.
Vid fräsning av asfalt har det föreslagits att använda slit- element i fornnav hàrdmetallbestyckade verktyg, vilka kan rotera i sina hållare. Verktygen är dà monterade pà en skärvals, vilken under drift roterar och ger en relativ- hastighet i angreppspunkten mellan hàrdmetallspetsen och vägytan som är betydligt högre än den hastighet med vilken maskinen rör sig längs vägen. En sàdan medelst fräsning utförd skärande bearbetning är en dyrbar och svàrkontrollerad metod och är praktiskt och ekonomiskt oacceptabel att an- vända vid t ex isrivning pa en vintervägbana. Vid gjorda försök har kostnaden för att àterställa skadad vägbana kunnat uppgå till betydligt större belopp an den beräknade nyttan. 10 15 20 25 30 35 458 691 I likhet med vid den ovan beskrivna hyvlingen av vägytan ut- märkes fräsningsoperationen av att en energikrävande skärande bearbetning utföres med stort abrasivt slitage pà verktygen som följd.When milling asphalt, it has been proposed to use wear elements in old-fashioned hard metal-equipped tools, which can rotate in their holders. The tools are then mounted on a cutting roller, which during operation rotates and gives a relative speed at the point of attack between the cemented carbide tip and the road surface which is significantly higher than the speed at which the machine moves along the road. Such a cutting operation performed by milling is an expensive and difficult-to-control method and is practically and economically unacceptable to use in, for example, ice tearing on a winter road surface. In the case of attempts, the cost of restoring damaged road surface could have amounted to a much larger amount than the estimated benefit. 10 15 20 25 30 35 458 691 As with the planing of the road surface described above, the milling operation is characterized by the fact that an energy-intensive cutting machining is carried out with large abrasive wear on the tools as a result.
Syftet med föreliggande uppfinning är att åstadkomma en an- ordning för vägunderhàll vilken uppvisar mycket hög slit- styrka och funktionsstabilitet i kombination med hög avverk- ningsgrad samtidigt som erforderlig tillförd energi är lag.The object of the present invention is to provide a device for road maintenance which exhibits very high wear resistance and functional stability in combination with a high degree of felling at the same time as the required supplied energy is legal.
Dessa och andra syften med uppfinningen har uppnåtts genom att uppfinningen erhàllit de i efterföljande patentkrav an- givna kännetecknen.These and other objects of the invention have been achieved in that the invention has obtained the features stated in the appended claims.
Uppfinningen beskrivs närmare i det följande under hänvisning till bifogade ritningar pà vilka en utföringsform visas i exemplifierande syfte. Denna är endast avsedd att illustrera uppfinningen, vilken kan modifieras inom ramen för patent- kraven.The invention is described in more detail in the following with reference to the accompanying drawings, in which an embodiment is shown by way of example. This is only intended to illustrate the invention, which can be modified within the scope of the claims.
Pa ritningarna visar Fig. l en vy framifràn av ett hyvelskär enligt uppfinningen.In the drawings, Fig. 1 shows a front view of a planer insert according to the invention.
Fig. 2 visar en sidvy av hyvelskäret.Fig. 2 shows a side view of the planer insert.
Fig. 3 visar en perspektivisk vy av hyvelskäret i Pig. 1 och med ett verktyg monterat och ett löst verktyg framför hyvel- skäret.Fig. 3 shows a perspective view of the planer insert in Pig. 1 and with a tool mounted and a loose tool in front of the planer blade.
Det med 10 generellt betecknade hyvelskäret innefattar en basdel ll och en med denna fastsvetsad hàllardel 12. Bas- delen ll är utbildad med genomgående hal 13 vilka är avsedda att upptaga skruvar medelst vilka hállardelen 12 förbindes med ett ej visat hyvelblad pá en maskin för bearbetning av vägytor, sàsom hyvling av grus- och oljegrusvägar och is- rivning av vägar. 458 691 10 15 20 25 30 35 Enligt uppfinningen är ett flertal verktyg 14 roterbart mon- terade i hàllardelen 12. Verktygen, som är försedda med en hàrdmetallspets 15, är av den generella typ som visas i US-A-4201421, varför innehàllet i denna skrift införlivas med föreliggande beskrivning. Verktygen 14 upptages sà- ledes i borrningen i hàllardelen 12 och làses axiellt i borr- ningarna medelst en pá verktygets skaft anordnad hylsa sam- tidigt som hylsan tillàter verktyget 14 att rotera kring sin längdaxel 16. Hyvelskarets 10 egentliga skaregg utgöres följaktligen av hàrdmetallspetsarna 15.The planer insert generally indicated by 10 comprises a base part 11 and a holder part 12 welded thereto. The base part 11 is formed with a through hole 13 which are intended to receive screws by means of which the holder part 12 is connected to a planer blade (not shown) road surfaces, such as planing of gravel and oil gravel roads and demolition of roads. According to the invention, a plurality of tools 14 are rotatably mounted in the holder part 12. The tools, which are provided with a cemented carbide tip 15, are of the general type shown in US-A-4201421, so that the contents of this document is incorporated herein by reference. The tools 14 are thus received in the bore in the holder part 12 and are locked axially in the bores by means of a sleeve arranged on the shaft of the tool at the same time as the sleeve allows the tool 14 to rotate about its longitudinal axis 16.
Vid den illustrerade utföringsformen bildar verktygets 14 langdaxel 16 en vinkel GÅ med vägytan 17 när basdelen ll är monterad pà hyvelbladet, vilken vinkel kan anta värden mellan 200 och 900, med företräde för värden i storleks- Vidare bildar verktygets längdaxel 16 en vinkel /5 med en för anliggning mot hyvelbladet avsedd an- liggningsyta 18 pá basdelen ll, vilken vinkel lämpligen kan anta värden mellan 200 och 500. ordningen 500.In the illustrated embodiment, the longitudinal axis 16 of the tool 14 forms an angle GO with the road surface 17 when the base part 11 is mounted on the planer blade, which angle can assume values between 200 and 900, with preference for values of magnitude 16. an abutment surface 18 on the base part 11 intended for abutment against the planer blade, which angle can suitably assume values between 200 and 500. the order 500.
Avstàndet A mellan intilliggande verktyg 14 kan anta värden mellan 30 mm och 50 mm, med företräde för värden i storleks- ordningen 38 mm.The distance A between adjacent tools 14 can assume values between 30 mm and 50 mm, with preference for values in the order of 38 mm.
Hyvelskäret 10 utgöres lämpligen av sektioner som anordnas efter varandra sà att önskad totallängd hos hyvelskäret erhàlles.The planer insert 10 suitably consists of sections which are arranged one after the other so that the desired total length of the planer insert is obtained.
Det antas att avverkning av material i vägbanan enligt upp- finningen sker under rullande kontakt melhæi verktygsspetsarna 15 och vägwzm. Dà fifikfionskoefficienten är hög och dà skillnader föreligger i elasticitetsmodul i materialen i kontaktpunkterna bildas en vall framför "rullen" 15 när denna trycks mot och rullar över ett mer eller mindre plant underlag. “Rullen" 15 trycker vallen framför sig och vid tillräckligt högt tryck valsas eller slits vallen och vidhängande material bort ur underlaget. Avverkningen har därigenom orsakats av rull- 10 15 20 25 30 35 458 691 bildning och ej genom skärande bearbetning med abrasivt slitage, dvs material avverkas i väsentlig grad i vägytan genom krossning under rullning av materialet.It is assumed that felling of material in the roadway according to the invention takes place during rolling contact between the tool tips 15 and road wzm. When the coefficient of coefficient is high and when there are differences in the modulus of elasticity of the materials in the contact points, a dike is formed in front of the "roller" when it is pressed against and rolls over a more or less flat surface. The "roller" 15 pushes the embankment in front of it and at a sufficiently high pressure the embankment is rolled or torn away from the substrate. The felling has thereby been caused by roll formation and not by cutting machining with abrasive wear, ie. material is significantly felled in the road surface by crushing while rolling the material.
Slitelementen eller verktygen 14 är sàledes uppburna av den pà maskinen anordnade och relativt denna stationära uppbärningsanordningen 10. Pà grund av spetsarnas 15 rull- ning mot vägbanan kommer följaktligen slitelementen 14 att rotera kring sin längdaxel 16, varvid slitelementens 14 hastighet vid kontaktstället med vägytan blir mindre än maskinens och uppbärningsanordningens 10 hastighet.The wear elements or tools 14 are thus supported by the on-machine and relative to this stationary support device 10. Due to the rolling of the tips 15 towards the road surface, the wear elements 14 will consequently rotate about their longitudinal axis 16, the speed of the wear elements 14 than the speed of the machine and the support device 10.
För att den eftersträvade rullningen av verktygen 14 mot vägbanan med säkerhet skall uppnås skall raden av spetsar 15 bilda en vinkel mellan 300 och 400 med maskinens rörelse- riktning, dvs hyvelbladet skall snedställas denna vinkel.In order for the desired rolling of the tools 14 towards the road surface to be achieved with certainty, the row of tips 15 must form an angle between 300 and 400 with the direction of movement of the machine, ie the planer blade must be inclined this angle.
Den optimala vinkeln beror pà koniciteten hos spetsen 15, varvid det eftersträvas att den koniska spetsen 15 under drift ligger an mot underlaget utefter hela sin mantelyta.The optimal angle depends on the conicity of the tip 15, whereby it is sought that the conical tip 15 abuts against the ground along its entire mantle surface during operation.
Vid avverkning huvudsakligen genom krossning under rullning av underlaget enligt föreliggande uppfinning blir slitaget pa verktygen väsentligt mindre än om avverkningen skett genom skärande bearbetning. Dessutom àtgár avsevärt lägre energi än vid konventionellírent abrasiv avverkning vid skärande bearbetning. Som ovan nämnts är realhastigheten i kontaktpunkten mellan slitelementen 14 och det för bear- betning avsedda materialet alltid lägre än den nominella hastigheten hos maskinen. Detta beror pà att slitelementen 14 vid ökande kontakttryck avlastas genom vridning, var- igenom abrasivt slitage hàlls pà en mycket làg nivà med láng livslängd hos slitelementen som följd.When felling mainly by crushing while rolling the substrate according to the present invention, the wear on the tools becomes significantly less than if the felling has taken place by cutting machining. In addition, considerably lower energy is required than with conventional abrasive felling during cutting processing. As mentioned above, the real speed at the point of contact between the wear elements 14 and the material to be machined is always lower than the nominal speed of the machine. This is due to the fact that the wear elements 14 are relieved by rotation with increasing contact pressure, whereby abrasive wear is maintained at a very low level with a long service life of the wear elements as a result.
Genom den vall av underliggande material som omger den rullande konens, dvs spetsens 15, mantelyta uppstár en avstàndsverkan som krossar eller skjuvar bort intill- liggande material i vägbanan. Detta möjliggör att man 458 691 10 15 20 25 30 35 med mycket liten nominell sammanlagd area hos slitelementen enligt uppfinningen kan àstadkomma samma eller rent av bättre arbetsresultat som med konventionella hyvelstàl, vilka har avsevärt större sammanlagd i kontakt med vägytan stàende area.Through the embankment of underlying material which surrounds the mantle surface of the rolling cone, ie the tip 15, a distance effect arises which crushes or pushes away adjacent material in the roadway. This makes it possible to achieve the same or even better working results as with conventional planer steels, which have a considerably larger total area in contact with the road surface standing with a very small nominal total area of the wear elements according to the invention.
Det har befunnits att ett enligt uppfinningen utbildat hyvelskär är universellt användbart. Det är således lika användbart för hyvling av alla typer av vägar som för is- rivning vintertid.It has been found that a planer insert trained according to the invention is universally useful. It is thus just as useful for planing all types of roads as for ice demolition in winter.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8504296A SE458691B (en) | 1984-09-18 | 1985-09-17 | Road working machine cutter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8404673A SE8404673L (en) | 1984-09-18 | 1984-09-18 | VEGHYVELSKER |
SE8504296A SE458691B (en) | 1984-09-18 | 1985-09-17 | Road working machine cutter |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8504296D0 SE8504296D0 (en) | 1985-09-17 |
SE8504296L SE8504296L (en) | 1986-03-19 |
SE458691B true SE458691B (en) | 1989-04-24 |
Family
ID=26658786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8504296A SE458691B (en) | 1984-09-18 | 1985-09-17 | Road working machine cutter |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE458691B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993015273A1 (en) * | 1992-01-27 | 1993-08-05 | Sandvik Ab | Tool for road planing cutter |
WO2019199623A1 (en) * | 2018-04-13 | 2019-10-17 | Caterpillar Inc. | Arcuate bit surface and blade assembly |
-
1985
- 1985-09-17 SE SE8504296A patent/SE458691B/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993015273A1 (en) * | 1992-01-27 | 1993-08-05 | Sandvik Ab | Tool for road planing cutter |
WO2019199623A1 (en) * | 2018-04-13 | 2019-10-17 | Caterpillar Inc. | Arcuate bit surface and blade assembly |
US11512456B2 (en) | 2018-04-13 | 2022-11-29 | Caterpillar Inc. | Arcuate bit surface and blade assembly |
Also Published As
Publication number | Publication date |
---|---|
SE8504296L (en) | 1986-03-19 |
SE8504296D0 (en) | 1985-09-17 |
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