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
  • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
• • 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
  • E01C23/085—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 power-driven tools, e.g. vibratory tools
  • E01C23/088—Rotary tools, e.g. milling drums
• • 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
  • E01C23/127—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 rotary, e.g. rotary hammers
• • 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
  • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
  • E02F3/183—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with digging unit shiftable relative to the frame
• • 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
  • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
  • E02F3/188—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with the axis being horizontal and transverse to the direction of travel
• • 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
  • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
  • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
• • 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
  • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
  • E02F3/22—Component parts
  • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
  • E02F3/248—Cleaning the wheels or emptying the digging elements mounted on the wheels, e.g. in combination with spoil removing equipment
• • 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
  • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
  • E02F3/22—Component parts
  • E02F3/26—Safety or control devices
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F7/00—Equipment for conveying or separating excavated material
  • E02F7/06—Delivery chutes or screening plants or mixing plants mounted on dredgers or excavators
• • 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
  • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
  • E01C2301/50—Methods or devices for preventing dust by spraying or sucking

Definitions

• a cold scarification and recycling assembly for restoring a road pavement and an operating machine comprising said assembly form the subject matter of the present invention.
• the present invention refers to an assembly intended for removing layers of asphalt or similar material and the cold recycling thereof for direct repositioning on the portion of road pavement just removed.
• excavating devices connectable to operating machines, such as machines for earth moving, for example excavators or bulldozers or wheeled or tracked loaders for removing layers of asphalt or similar materials, is known.
• the resurfacing of the road surface requires that, once the regeneration machines have carried out the regeneration of the milled conglomerate and its redeposition on the road surface, a further layer of new hot conglomerate is also applied in order to create the wear-resistant layer. Therefore, according to the prior art, the regenerated milled conglomerate serves only as a carrier layer for receiving the new hot conglomerate on which the road traffic then operates. In an inconvenient manner, therefore, it is nevertheless necessary to deposit the new conglomerate, and it is not possible to create a road surface exclusively with recycled conglomerate.
• the scarification and recycling assembly 1 may be configured both for being pushed and for being towed by the operating machine 2, according to the working need. For example, it may be hitched to the rear of a tractor, as shown in Fig. 17 and 18 , or moved forward or in reverse, as shown in Fig. 13 to 16 , on a loader or mini-loader.
• the scarification and recycling assembly 1 is therefore configured so that the scarification group 10 is always before the recycling group 20 in the direction of advancement Y.
• the scarification assembly comprises an assembly body 2'.
• the position of the contact skids 81, 82 with respect to the assembly body 2' is adjustable.
• the assembly 1 could advantageously comprise a device 24 for adjusting the excavation depth D' for each contact skid 81, 82.
• the auto-leveling body 80 is guided by the assembly body 2' in the various angular positions via guiding means cooperating with said bodies 80, 2'.
• the scarification and recycling assembly 1 is therefore movable in a working direction (or advancing direction) Y while maintaining the sliding contact between the contact skids 81, 82 and the plane of the road pavement P.
• the contact skids 81, 82 are arranged adjacent to one another and spaced apart in front of the other.
• the assembly body 2' is mechanically connected to the auto-leveling body 80 so as to apply weight in a balanced manner to the contact skids 81, 82.
• the cold scarification and recycling assembly 1 comprises a recycling group 20 housed within a second region R of the scarification and recycling assembly 1.
• Said recycling group 20 comprises a mixing and shredding element 200 of the scarified conglomerate material C.
• Drive means 102, 202 are suitable for moving the excavation tool 100 and the mixing and shredding element 200.
• the drive means 102, 202 are of the electric type, for example electric motors.
• the interception device 30 prevents the passage of milled conglomerate material C from the scarification group 10, i.e., from the first region D, to the recycling group 20, i.e., the second region R.
• the interception group 30 allows the passage of milled conglomerate material C from the scarification group 10, i.e., from the first region D, to the recycling group 20, i.e., to the second region R.
• regenerating fluid is therefore intended to also mean an additive fluid or a bituminous binding agent.
• the regenerating fluid is preferably the fluid sold under the commercial name Iterlene ACF 1000 HP GREEN by the company Iterchimica Srl, Bergamo, Italy.
• a further object of the present invention is the use of a regenerating fluid, and in particular the use of a bitumen mixture or a mixture containing a hydrocarbon binding agent, preferably of the fluid sold under the commercial name Iterlene ACF 1000 HP GREEN by the company Iterchimica Srl, Bergamo, Italy, for restoring a road surface in a cold process directly on the street, and more particularly the use of a cold scarification and recycling assembly 1 according to the present invention or the use in a method for restoring a road surface according to the present invention (described below in the present description).
• said device 24 preferably keeps said adjustment or setting constant or unchanged for the entire determined excavation operation.
• This type of adjusting device 24 has been discussed only by way of example. Other modes of adjusting the excavation depth according to other embodiments are possible.
• the scarification group 10 comprises a scarification chamber 11 in which the excavation tool 100 is housed
• the recycling group 20 comprises a recycling chamber 21 in which the mixing and shredding element 200 is housed.
• the scarification chamber 11 and the recycling chamber 21 are directly communicating with each other by means of a conglomerate passage opening 22 suitable for being opened or closed by means of the interception device 30.
• the assembly 1 comprises a scarification group frame 15, which at least partially defines the scarification chamber 11, and a recycling group frame 25, which is disconnected but fixed to the scarification group 15 and which at least partially defines the recycling chamber 21.
• the scarification group 15 is therefore joined to the recycling group frame 25.
• the scarification group frame 15 and the recycling group frame 25 are a single main frame which forms the assembly body 2'.
• the single main frame is a single piece which supports the excavation tool 100 and the shredding and mixing element 200.
• the conglomerate passage opening 22 is made in the scarification group frame 15 or in the recycling group frame 25.
• the interception device 30 comprises a bulkhead 30' translatable with respect to the scarification group frame 15 and/or to the recycling group frame 25 to determine the opening or the partial or total closing of the conglomerate passage opening 22.
• the bulkhead 30' preferably functions as a bulkhead for scraping the base of the road surface and prevents the direct passage of the milled conglomerate C below the sieving element 50 from occurring without first passing through the recycling group 20 when the conglomerate passage opening 22 is at least partially open.
• the bulkhead 30' When, instead, the bulkhead 30' is in a configuration in which it totally closes the conglomerate passage opening 22 (as for example shown in Fig. 14 ), in this case the bulkhead 30' then prevents the passage of the regenerated conglomerate material CR toward the second region R, i.e., toward the recycling group 20.
• the interception device 30 comprises a bulkhead movement group 70, for example one or more hydraulic or electric cylinders, connected to the bulkhead 30' and to the scarification group frame 15 and/or to the recycling group frame 25.
• Said bulkhead movement group 70 is suitable for translating the bulkhead 30' along the vertical direction of translation Z substantially perpendicular with respect to the plane of the road pavement P.
• translation guides are formed which are suitable for housing the bulkhead 30' in translation along the direction of translation Z.
• the assembly 1 comprises a dosing unit (not shown in the figures) suitable for adjusting the amount of water and/or regenerating fluid to be dispensed via the water and/or regenerating fluid dispensing device 40.
• the dosing unit preferably comprises means for storing water and regenerating fluid and pumping means for dispensing the water or regenerating fluid from the storage means to the water and/or regenerating fluid dispensing device.
• the cold scarification and recycling assembly 1 comprises a speed detector device 60.
• the cold scarification and recycling assembly 1 comprises a depth detector device.
• the depth detector device is operatively connected to a dosing unit and is suitable for detecting the scarification depth D' of the road pavement P performed by the scarification group 10 with respect to the plane of the road pavement P.
• the dosing unit is suitable for adjusting the amount of water and/or regenerating fluid to be dispensed according to the depth detected by the depth detector device.
• the speed detector device 60 comprises, for example, a speed detector such as a GPS, or an electronic device for detecting the linear advancement speed, or similar.
• the speed detector device 60 comprises a wheel 61 and a wheel support group 62 suitable for supporting the wheel in a manner rotatable about a wheel rotation axis X".
• the wheel support group 62 is suitable for positioning the wheel in a rearward configuration A, in which the wheel is spaced apart with respect to the level of the road pavement P, and a working configuration W, in which the wheel is in contact with the road pavement P during the advancement of the cold scarification and recycling assembly 1.
• the speed detector device 60 comprises a wheel rotation speed sensor, for example an electronic encoder.
• the wheel support group 62 comprises arm movement drive means.
• the wheel support arm 63 is rotatable about an arm rotation axis X′′′ which is parallel and spaced apart with respect to the wheel axis of rotation X".
• the wheel support arm 63 is configurable with its main extension axis parallel to the level of the road pavement P when the assembly is in operation or perpendicular (i.e., vertical) with respect to the level of the road pavement P when it is not in operation or when it is not necessary to measure the advancement speed of the assembly 1, as shown, for example, in Fig. 11 , in the first scarification step (milling) or in Fig. 14 .
• the wheel support group 62 further comprises an angular position sensor suitable for determining the milling depth of the cold scarification and recycling assembly 1 as a function of the angular position of the wheel support arm 63 (functioning, therefore, as a depth detector device).
• the sieving element 50 is a perforated wall or a grid having sieve openings and arranged below the mixing and shredding element 200, in the vertical direction perpendicular to the level of the road pavement P. Therefore, the sieving element is the last element that the regenerated conglomerate CR encounters before being released on the working surface S of the road pavement P.
• the sieving element 50 is a perforated wall in the form of a cylindrical or semi-cylindrical sector that is fixed to and integral with the recycling group frame 25.
• the second wall in relative movement with respect to the sieving element 50 opens and closes windows in order to increase or decrease the dimension of the material to be discharged or close the discharge off completely.
• a further object of the present invention is an operating machine 2 comprising a cold scarification and recycling assembly 1 described in the preceding paragraphs, for example preferably mounted on the rear of a tractor or on the loader arm of a mini-loader.
• the operating machine 2 is preferably provided with at least one electrical power take-off for powering the drive means 102, 202 and/or the bulkhead movement group 70 and/or the arm movement drive means.
• the operating machine 2 is preferably provided with at least one mechanical power take-off 42 for powering the drive means 102, 202 and/or the bulkhead movement group 70 and/or the arm movement drive means.
• the method further comprises the operational step of: g) smoothing and compacting the regenerated milled conglomerate CR ( Fig. 15 ).
• step c) involves the injection of water or, more generally, a liquid on the milled conglomerate being worked in the scarification chamber and/or in the recycling chamber 21, for example in order to suppress the dust.
• step c') or in step e) the injection of regenerating fluid and possibly water involves:
• the present invention is suitable for overcoming the drawbacks related to the prior art.
• the assembly according to the present invention turns out to be particularly compact and suitable for the specific purpose of repairing small plots.
• the assembly according to the present invention does not require bulky and non-self-propelled conglomerate regeneration machines, but executes the operation of scarification and regeneration and placement of the conglomerate in an integrated manner.
• said possibility allows to adapt the known operating machines for the execution of activities of scarification and recycling of the road pavement without requiring the predisposition of a self-propelled machine dedicated for the application. Therefore, this provides great potential for converting the already existing operating machines.
• the possibility of metering the amount of regenerating fluid and water in line (i.e., during the advancement of the assembly) and in a controlled manner during the advancement of the assembly makes it possible to render the regeneration procedure more effective and efficient.
• the amount of regenerating fluid is adaptable as a function of the advancement speed and the type of conglomerate involved.
• each variant described as belonging to a possible embodiment may be implemented independently of the other variants described.

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• Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Architecture (AREA)
• Road Repair (AREA)

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Publications (2)

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• 2021
  • 2021-11-19 IT IT102021000029318A patent/IT202100029318A1/it unknown
• 2022
  • 2022-11-18 WO PCT/IB2022/061130 patent/WO2023089547A1/en not_active Ceased
  • 2022-11-18 AU AU2022393944A patent/AU2022393944A1/en active Pending
  • 2022-11-18 FI FIEP22821622.2T patent/FI4433648T3/fi active
  • 2022-11-18 EP EP22821622.2A patent/EP4433648B1/de active Active
  • 2022-11-18 CA CA3236698A patent/CA3236698A1/en active Pending
  • 2022-11-18 CN CN202280076831.XA patent/CN118401718A/zh active Pending
  • 2022-11-18 KR KR1020247017314A patent/KR20240127337A/ko active Pending
  • 2022-11-18 EP EP25189098.4A patent/EP4628656A3/de active Pending
  • 2022-11-18 JP JP2024529728A patent/JP2024540576A/ja active Pending
  • 2022-11-18 ES ES22821622T patent/ES3054985T3/es active Active

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