US3829161A - Apparatus for milling road surfaces - Google Patents

Apparatus for milling road surfaces Download PDF

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Publication number
US3829161A
US3829161A US00244775A US24477572A US3829161A US 3829161 A US3829161 A US 3829161A US 00244775 A US00244775 A US 00244775A US 24477572 A US24477572 A US 24477572A US 3829161 A US3829161 A US 3829161A
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United States
Prior art keywords
roller
chassis
road surface
cutters
mounting
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Expired - Lifetime
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US00244775A
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English (en)
Inventor
R Wirtgen
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19712118458 external-priority patent/DE2118458C3/de
Priority claimed from DE19712145497 external-priority patent/DE2145497B2/de
Priority claimed from DE19722203529 external-priority patent/DE2203529B2/de
Priority claimed from DE19722203530 external-priority patent/DE2203530C2/de
Application filed by Individual filed Critical Individual
Priority to US05/466,966 priority Critical patent/US3975055A/en
Application granted granted Critical
Publication of US3829161A publication Critical patent/US3829161A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08Devices 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
    • E01C23/085Devices 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 power-driven tools, e.g. vibratory tools
    • E01C23/088Rotary tools, e.g. milling drums

Definitions

  • E016 23/09 roller relative to the d Sudacfi h is, the cutters [58] Field of Search 299/10, 39, 18 n the road surface in a direction of forward move ment of the axis of the roller.
  • the apparatus of the in- [56] References cued vention further includes means for varying the level of UNI D A S T S the roller, and for varying the tilt of the roller relative 1,883,404 10/1932 Ronning 299/39 x to the road surface.
  • the present invention relates to apparatus and a method for milling road surfaces, and more particularly to milling road surfaces made from concrete, asphalt, or the like.
  • the aim of the present invention is to create a method and mechanical means by means of which the wear on the cutters is reduced and in addition the use of very hard modern cutter materials is made possible. in addition, a more regular cutting effect is to be ob tained which is ensured even when the cutting width is large.
  • the speed of rotation of the roller amounts to between 60 and 140 rpm.
  • a speed of about revolutions per minute is particularly advantageous.
  • the diameter of the cutter roller is preferably 50 to 80 cm. A more uniform surface is obtained if, in accordance with a special embodiment of the mechanical means of the invention, the cutters on the cutter roller are mounted helically.
  • a further improvement of the cutting effect, and in particular, uniform removal of material, is obtained by providing the cutter roller at both its terminal securing points with one or more support wheels resting directly upon the road surface.
  • the support wheels mounted on the two end bearings of the roller are designed in accordance with a particularly advantageous embodiment of the present invention with vertical adjustment in relation to the bearings.
  • Such vertical adjustment can be obtained appropriately by means of elevating screws.
  • the jack screws have proved to be particularly advantageous because they enable precise vertical adjustment of the support wheels in a simple manner.
  • the support wheels are preferably mounted laterally beside the cutter roller at its mounting supports.
  • the support wheels In order to enable the road surfaces to be dealt with right up to the edge, in particular it has been proved advantageous for the support wheels to be mounted in front of the roller at its support mountings, viewed from the direction of travel.
  • the support wheels are secured behind the roller (viewed from the direction of travel) at its mountings.
  • the support wheels thus rest on the completely level road surface which has already been milled, with the result that these wheels which are ultimately responsible for the precise guidance of the cutter roller, guide the roller at a constant distance over the road surface.
  • the support wheels are preferably designed as solid rubber tyres or steel wheels. In this way any unnecessary vibration is completely excluded which might have an adverse effect on the cutting properties of the roller.
  • the support wheels viewed from the direction of travel, are mounted behind the cutter roller, then it has been proved to be particularly useful for one or more pusher blades to be mounted in front of the support wheels to remove the cut material. In this way there is no risk of the cut material interfering with the regular passage of the support wheels and in this way the vertical adjustment of the roller in relation to the smoothly milled road surface is not adversely affected.
  • the support wheels are normally secured as single wheels to the two support mountings for the cutter roller.
  • the stability of the whole cutting mechanism is, however, further increased if the support wheels mounted on each side are connected to each other by a common axle.
  • the application pressure of the support wheels on the road surface can be regulated by means of the vertical adjustment device for the cutter roller and if necessary the whole weight loading the front wheels of the chassis can, practically speaking, be shifted to the suppo wheels.
  • the cutter roller forms a single constructional unit with the driving gear, which unit is connected by a drive shaft to the drive motor and is secured by mounting brackets, which can be provided with vertical adjustment if necessary, directly or indirectly to the chassis.
  • the construction unit is secured directly or indirectly to the chassis by a three-point suspension mounting.
  • Such a vertically adjustable three-point suspension makes possible, in the simplest possible manner, tilting of the construction unit at an angle to the direction of travel, with the result that the above-mentioned irregular removal action is avoided.
  • both suspensions arranged above the cutter roller are designed with vertical adjustment, for example by using screwed jacks, hydraulic cylinders or the like, it is possible to effect adjustment of the cutting depth by these vertically adjustable means at the same time. This happens in this case, in that both vertical adjustments are lowered by the same amount.
  • the unit with its optionally vertically adjustable suspensions is secured by an independently vertically adjustable support mounting to the chassis.
  • This independently vertically adjustable support mounting thus permits adjustment of the cutting depth.
  • construction unit is secured, so that it can swivel round a vertical axis, by means of its suspensions through an independently vertically adjustable support beam in a ring mounting secured to the chassis.
  • Such a swivel arrangement of the unit makes it possi ble, in particular with very broad cutter rollers, to swivel the unit round on the vertical axis once the universal shaft operating the drive between the motor and the gear mechanism in the unit is released.
  • the swivelling of the unit can be effected either manually or by a motor which is particularly advantageous. It has proved most useful to use a hydraulic gear motor for lowering the support beam since this type of motor is better adapted than an electrical geared motor to cope with the harsh working conditions.
  • FIG. 1 a side view of mechanical means according to the invention for the milling of road surfaces, which is provided with the support wheels mounted on the end support mountings of the cutter roller and rest themselves on the road surface.
  • FIG. 2 an enlarged drawing of the cutter roller equipped with hard metal cutters and their action on the road surface which is to be milled.
  • FIG. 3 a side view of a machine in which the cutter roller is connected with the gearing to form a single construction unit.
  • FIG. 4 a perspective view of the unit with its suspension, as in FIG. 3.
  • FIG. 5 a perspective view of a unit with a different suspension.
  • FIG. 6 a side view of mechanical means according to the invention in which the construction unit is mounted so that it can swivel around a vertical axis in a ring mounting.
  • FIG. 7 a top view of the ring mounting in FIG. 6.
  • the inventive mechanical means shown in FIG. 1 comprises a chassis l with a steerable pair of front wheels 2 and rear wheels 3 which are propelled forward by a motor 4 which also drives the cutter roller 7 through the universal shaft 5 and the transmission 6.
  • the vertical adjustment'of the cutter roller 7 is effected by the support mounting 8 and the hydraulic cylinder 9.
  • the direction of rotation of the cutter roller 7 is shown by the arrow and is opposite to the direction of movement of the chassis. This means that the cutmaterial 10 assembles in front of the cutter roller up to a certain height and is then transported to the rear by this roller.
  • the direction of forward movement of the chassis 1 can be seen from the arrows which are located at the front and rear wheels.
  • FIG. 2 the cutter roller 7 and the action of the hard metal cutters 11 mounted thereupon on theroad surface are shown in enlarged detail.
  • the cut material gathers, as shown also in FIG. 1, in front of the cutter roller and is finally, when it has reached a preset height, transported to the rear over the roller by the hard metal cutters 11 acting as conveyor elements.
  • a support wheel 12 is mounted on each side which is guided with vertical adjustment by means of a screwed jack 13.
  • This support wheel 12 can, according to another em bodiment of the present invention in which it is again viewed from the direction of travel, be mounted behind the cutter roller at the appropriately shaped mounting.
  • the mounting can, naturally, also be effected on the inside face of the support mounting and it is simply for the sake of better illustrating the arrangement that it is secured, in the example shown, on the outside of the cutter roller mounting.
  • the construction unit 14 is mounted between the front pair of wheels 2 and the rear pair 3.
  • This unit comprises basically a cutter roller 7 fitted with chisel-like cutters which is driven by the diesel motor 4 through a gear system 15 (see FIG. 4) and a universal shaft 5.
  • a gear system 15 see FIG. 4
  • an additional motor on the chassis 1 or inside the unit 14.
  • the cutter roller 7 is, as can be seen from FIG. 4 in particular, mounted along with its shaft 16 in a frame 17 which comprises two side pieces 18 and 19 and two crossbeam supports 20 and 21 connecting same, with the frame 17 being suspended directly on these sup ports to the chassis 1.
  • the gear system 15 whose drive shaft or shafts 22 and 23 depending on the design of the gear system 15 used are also mounted in the side pieces 18 and 19.
  • On the ends'of the shaft 22 and 23 adjacent to the side pieces 18 and 19 is located on each side a sprocket wheel 24 or 25 which drives through a chain 26 or 27 a sprocket wheel 28 or 29 secured to the cutter roller shaft 16.
  • the input shaft 30 of the gear system 15 is connected, as already mentioned, to the diesel motor 4 through the universal shaft 5.
  • the cutter roller 7 mounted in the frame 17 and the gear system 15, which together form the construction unit 14, can be swivelled around an almost horizontal axis 31 located in the mid-plane perpendicular to the cutter roller axis, on a support mounting 32, and around an axis 33 parallel to the axis 31 on another support mounting 34 to form a pivoting arrangement.
  • the support mounting 32 is welded to the support panel of a carrier beam 39 comprising four panels 35, 36, 37 and 33 and comprises either a relatively broad mounting in the axial direction or two support mountings mounted at the front and rear end of the construction unit.
  • the locking arm 34 is the piston rod of a hydraulic piston drive system 40 which is mounted on the support panel 37 so that the locking arm 34 thus operates in conjunction with the support beam 39.
  • the support 39 is, as is particularly apparent from FIG. 3, displaceably secured by means of two arms 41 and 42 to the chassis 1 and can be swivelled by means of another hydraulic piston drive system 43, which is located on a reinforcing rib 44 of the chassis 1 and whose piston rod 45 is swivelmounted to the support panel 35, around the axis 46,
  • the cutting depth can be regulated.
  • the hydraulic piston system 40 By controlling the hydraulic piston system 40 the adjustment of the desired tilt to the cutter roller 7 in relation to the horizontal can be obtained.
  • FIG. is shown another possible means of suspending the construction unit 14 comprising the cutter roller 7 mounted in the frame 17 and the gear system.
  • the unit is suspended in the mid-plane perpendicular to the cutter roller axis on a universal coupling 47 engaging with the crossbeam 21 on a reinforcing strut 48 screwed directly to the chassis l and vertically adjustable with its crossbeam 20 and inclinable to the horizontal on a support mounting 49 swivel mounted around its longitudinal axis on the chassis 1.
  • two hydraulic piston drives 50 and 51 are provided on the support mounting 37 whose piston rods 52 and 53, acting as support arms, are swivel mounted on the crossbeam 20.
  • Such an embodiment is obviously less expensive to construct than the one initially men 'tioned. It can be further simplified in that one of the two piston drives 50, 51 is replaced by a swivelmounted support rod whose length cannot be altered,
  • theconstruction unit 14 is located between the front wheels 2 and the rear wheels 3, said unit comprising a cutter roller 7 with a plurality of chisel-like cutters (not shown) which operates in conjunction with the diesel motor 4 through a gear system 15 and a universal shaft 5.
  • a cutter roller 7 with a plurality of chisel-like cutters (not shown) which operates in conjunction with the diesel motor 4 through a gear system 15 and a universal shaft 5.
  • an additional motor can be provided to drive the cutter roller 7 either on the chassis l or the construction unit 14.
  • the width of the cutter roller is considerably greater than the overall width of the chassis.
  • the cutter roller 7 and the gear system 15 are combined to form one single unit inside a frame 17 in which the cutter roller 7 with its shaft 16 and drive shafts 22 and 23 of the gear system 15 are mounted.
  • a sprocket wheel 24 or 25 which is connected by a chain 26 or 27 to a sprocket wheel 28 or 29 secured to the cutter roller shaft 16.
  • the frame 17 For regulating the height or cutting depth of the cutter roller 7 the frame 17 forms an articulated link at its front end, adjacent to the cutter roller 7 at the piston rod 54 of a hydraulic piston drive 55, and at its rear 'end, opposite the cutter roller 7, to a support arm 56.
  • the other end of the support arm 56 is welded to one end of a support 57.
  • To the other end of the support 57 is fitted the cylinder 58 of the hydraulic drive 55.
  • a ring mounting 61 which is screwed at its lower part 62 to the spars 59 and 60 and on the upper rotary part 63 of which the support 57 rests.
  • the rotation of the upper part 63 of the ring mounting 61 is effected by a hydraulic geared motor 64.
  • the driving shaft 65 of the gear system 15 is connected by the universal shaft 5 to the diesel motor 4 of the mechanism. Since before any rotation of the support 57 from the cutting position this connection has to be released and then remade after rotating back, the universal shaft 5 is divided into two parts at and 5b which can be connected to one another to form a positive connection by means of a coupling 66.
  • the coupling 66 comprises, as can be seen from H6. 7, an internal square 67 which is welded on to the part 5a, and an appropriately dimensioned outer square 68 which is machined by milling out of the part 512.
  • the dimensions of the outer square 68 and those of the internal square 67 are so selected that easy inwards and outwards movement, for engagment of the two parts, is ensured.
  • Apparatus for milling road surfaces comprising:
  • means including a drive system driven by the motor driving said chassis, for rotating said roller in a direction of rotation such that the underside of said roller moves forward more rapidly than the forward advance of said chassis, said cutters engaging and milling said road surface during rotation of said roller when the roller is lowered into operating position, and
  • suspension mounting means comprising a three point suspension for coupling said roller and drive system as a single unit to said chassis and for raising, lowering and vertically adjusting said roller.
  • suspension mounting means comprise at least one vertically adjustable mounting and a further two cardantype suspension mountings.
  • Apparatus according to claim 2 wherein said single unit comprising said roller and drive system includes vertically adjustable suspension members mounting said roller thereto, said single unit being connected to said chassis by an independently vertically adjustable support mounting.
  • Apparatus for milling road surfaces comprising:
  • means including a drive system driven by the motor driving said chassis, for rotating said roller in a direction of rotation such that the underside of said roller moves forward more rapidly than the forward advance of said chassis, said cutters engaging and milling said road surface during rotation of said roller when the roller is lowered into operating position, and
  • suspension mounting means for coupling said roller and drive system as a single unit swivel mounted around a vertical axis to said chassis by means of a ring mount secured to the chassis and providing for raising, lowering and vertically adjusting said roller.
  • Apparatus for milling road surfaces comprising:
  • means including a drive system driven by the motor driving said chassis, for rotating said roller in a direction of rotation such that the underside of said roller moves forward more rapidly than the forward advance of said chassis, said cutters engaging and milling said road surface during rotation of said roller when the roller is lowered into operating position, and
  • said mounting means including a frame structure carrying said roller, said frame structure being connected to said chassis so as to pivot universally about a pivot affixed to said chassis.
  • Apparatus according to claim 6 including means for pivoting said frame structure to adjust the height of said roller relative to the road surface.
  • Apparatus according to claim 6 including means for pivoting said frame structure to adjust the tilt of said roller relative to the road surface.
  • Apparatus for milling road surfaces comprising:
  • means including a drive system driven by the motor driving said chassis, for rotating said roller in a direction of rotation such that the underside of said roller moves forward more rapidly than the forward advance of said chassis, said cutters engaging and milling said road surface during rotation of said roller when the roller is lowered into operating position, and
  • said mounting means including a first frame structure carrying said roller, said frame structure being pivotally connected to a second frame structure pivoted on said chassis, said first frame structure being pivoted to swing at right angles to the pivotal swing of said second frame structure, each said frame structure being provided with vertical adjusting means for adjusting its position about its pivot relative to the member on which it is pivoted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
US00244775A 1971-04-16 1972-04-17 Apparatus for milling road surfaces Expired - Lifetime US3829161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/466,966 US3975055A (en) 1971-04-16 1974-05-06 Apparatus for milling road surfaces

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19712118458 DE2118458C3 (de) 1971-04-16 1971-04-16 Verfahren und Vorrichtung zum Abfräsen von Straßendecken aus Beton, Asphalt o.dgl.
DE19712145497 DE2145497B2 (de) 1971-09-11 1971-09-11 Vorrichtung zum Abfräsen von Strassendecken
DE19722203529 DE2203529B2 (de) 1972-01-26 1972-01-26 Maschine zum Abfräsen von Straßendecken
DE19722203530 DE2203530C2 (de) 1972-01-26 1972-01-26 Maschine zum Abfräsen von Straßendecken

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US05/466,966 Division US3975055A (en) 1971-04-16 1974-05-06 Apparatus for milling road surfaces

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US3829161A true US3829161A (en) 1974-08-13

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US00244775A Expired - Lifetime US3829161A (en) 1971-04-16 1972-04-17 Apparatus for milling road surfaces

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US (1) US3829161A (it)
FR (1) FR2133919B1 (it)
GB (1) GB1392361A (it)
IT (1) IT954641B (it)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989304A (en) * 1974-03-08 1976-11-02 Reinhard Wirtgen Machine for cutting away road surfaces
US4139318A (en) * 1976-03-31 1979-02-13 Cmi Corporation Method and apparatus for planing a paved roadway
US4193636A (en) * 1978-07-10 1980-03-18 Jakob Herbert E Asphalt paving planer with conveyor forwardly of cutting drum
US4295274A (en) * 1978-07-27 1981-10-20 Tennant Company Scarifying machine
US4333686A (en) * 1980-06-09 1982-06-08 Federal-Mogul Corporation Road planer device with auxiliary outrigger depth control wheels
US4333685A (en) * 1980-06-09 1982-06-08 Federal-Mogul Corporation Road surfacing apparatus
US4407605A (en) * 1980-06-16 1983-10-04 Reinhard Wirtgen Method and apparatus for repairing longitudinal seams or cracks in road surfaces
US4664447A (en) * 1986-02-03 1987-05-12 Clark Harry I Apparatus for removing roofing material
US4878713A (en) * 1988-12-09 1989-11-07 Alitec Corporation Pavement planing machine
US6454490B1 (en) 2001-02-14 2002-09-24 Dustrol, Inc. Method and apparatus for cutting rumble strips in roads
CN101831864A (zh) * 2010-04-29 2010-09-15 常州杰和机械有限公司 路面铣刨机
US20160237643A1 (en) * 2013-10-09 2016-08-18 Heriberto Floridor QUIDIANTE DIAZ Dredger actuated from land
CN106320157A (zh) * 2016-08-18 2017-01-11 合肥信诺捷科节能服务有限公司 一种智能型路面切割机
CN109853344A (zh) * 2018-11-14 2019-06-07 徐州新路缘机械科技有限公司 一种高速公路侧向铣刨器
US10519625B2 (en) 2013-10-09 2019-12-31 Heriberto Floridor QUIDIANTE DIAZ Dredger actuated from land

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10612196B2 (en) * 2017-12-19 2020-04-07 Caterpillar Paving Products Inc. Moldboard support structure for a milling machine
DE102022134454A1 (de) * 2022-12-22 2024-06-27 Wirtgen Gmbh Baumaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434C (de) * J. SCHREIBER in Giesing, bei München Maschine zum Herausbohren der Stehbolzen aus Lokomotiven
US2A (en) * 1826-12-15 1836-07-29 mode of manufacturing wool or other fibrous materials
US1883404A (en) * 1928-08-11 1932-10-18 Ronning Adolph Road maintainer
US2068433A (en) * 1934-12-31 1937-01-19 Maria E Peterson Road leveler
FR1235158A (fr) * 1958-09-16 1960-07-01 Fraiseuse de chaussées pour la réalisation de bandes indicatrices
US3072391A (en) * 1960-06-21 1963-01-08 James F Mcdarrah Disintegrating machine having cutting and impact action
US3414327A (en) * 1966-06-13 1968-12-03 Christensen Diamond Prod Co Apparatus and methods for cutting concrete surfaces

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989304A (en) * 1974-03-08 1976-11-02 Reinhard Wirtgen Machine for cutting away road surfaces
US4139318A (en) * 1976-03-31 1979-02-13 Cmi Corporation Method and apparatus for planing a paved roadway
US4193636A (en) * 1978-07-10 1980-03-18 Jakob Herbert E Asphalt paving planer with conveyor forwardly of cutting drum
US4295274A (en) * 1978-07-27 1981-10-20 Tennant Company Scarifying machine
US4333686A (en) * 1980-06-09 1982-06-08 Federal-Mogul Corporation Road planer device with auxiliary outrigger depth control wheels
US4333685A (en) * 1980-06-09 1982-06-08 Federal-Mogul Corporation Road surfacing apparatus
US4407605A (en) * 1980-06-16 1983-10-04 Reinhard Wirtgen Method and apparatus for repairing longitudinal seams or cracks in road surfaces
US4664447A (en) * 1986-02-03 1987-05-12 Clark Harry I Apparatus for removing roofing material
US4878713A (en) * 1988-12-09 1989-11-07 Alitec Corporation Pavement planing machine
US6454490B1 (en) 2001-02-14 2002-09-24 Dustrol, Inc. Method and apparatus for cutting rumble strips in roads
CN101831864A (zh) * 2010-04-29 2010-09-15 常州杰和机械有限公司 路面铣刨机
CN101831864B (zh) * 2010-04-29 2011-10-19 常州杰和机械有限公司 路面铣刨机
US20160237643A1 (en) * 2013-10-09 2016-08-18 Heriberto Floridor QUIDIANTE DIAZ Dredger actuated from land
US10519625B2 (en) 2013-10-09 2019-12-31 Heriberto Floridor QUIDIANTE DIAZ Dredger actuated from land
CN106320157A (zh) * 2016-08-18 2017-01-11 合肥信诺捷科节能服务有限公司 一种智能型路面切割机
CN109853344A (zh) * 2018-11-14 2019-06-07 徐州新路缘机械科技有限公司 一种高速公路侧向铣刨器

Also Published As

Publication number Publication date
FR2133919A1 (it) 1972-12-01
FR2133919B1 (it) 1976-06-11
IT954641B (it) 1973-09-15
GB1392361A (en) 1975-04-30

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