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
  • E01C23/085—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
  • E01C23/065—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
  • E01C23/12—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 scari fication and recycling assembly for restoring a road pavement and an operating machine comprising said assembly form the subj ect 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 j ust removed .
• the damaged bituminous layers in cold recycling are scari fied and shredded, and the obtained milled material is then regenerated with the addition of binding agents and then compacted and re-laid on the road bed .
• the need for speeding up and rendering the road surface resurfacing procedure simpler and more streamlined remains strongly felt , especially for relatively reduced surface areas of damaged road surface .
• the need remains strongly felt for a device that allows for restoring of the damaged road surface that is compact , streamlined and ef fective , and does not require bulky supporting machines .
• the need is felt for a streamlined device that does not require sel f-propelled regeneration machines of enormous dimensions , typically provided with their own means for movement on the road integrated into the machine itsel f .
• FIG. 1 is an axonometric exploded view of a scari fication and recycling assembly according to one embodiment of the invention
• FIG. 2 is an axonometric view of the scari fication and recycling assembly wherein the external housing has been arti ficially removed in order to show the internal components according to one embodiment of the invention
• FIG. 3 is an axonometric view from above of the scarification and recycling assembly according to one embodiment of this invention.
• FIG. 4 is a bottom axonometric view of the scarification and recycling assembly of Fig. 3;
• FIG. 5 is a further axonometric view of the scarification and recycling assembly of Fig. 3, wherein interception device is in an open configuration;
• FIG. 6 is a further axonometric view of the scarification and recycling assembly of Fig. 3, wherein an interception device is in a closed configuration;
• FIG. 7 is an axonometric view of a scarification and recycling assembly according to a further embodiment of the invention.
• FIG. 8 is an axonometric view of the scarification and recycling assembly of Fig. 7 wherein the external housing has been artificially removed in order to show the internal components according to one embodiment of the invention
• FIG. 9 shows a bottom axonometric view of the scarification and recycling assembly of Fig. 7;
• FIG. 10 is an axonometric exploded view of the scarification and recycling assembly of Fig. 7;
• FIG. 11 is a lateral sectional view of a scari fication and recycling assembly according to one embodiment of the present invention, mounted on an operating machine , in particular a mini-loader having an operating machine mobile arm to which the scari fication and recycling assembly is connected, during a step of milling and machining the damaged asphalt , wherein an interception device is in an open configuration ;
• FIG. 12 is a lateral view of a second step of machining the road surface , preferably subsequent to the step of Fig . 11 , according to one embodiment of the method for restoring a road surface , wherein a binding agent is applied;
• FIG. 13 is a lateral sectional view of a scari fication and recycling assembly mounted on an operating machine , in particular a mini-loader, having a mobile arm of an operating machine to which the scari fication and recycling assembly is connected, during a machining step of the method for restoring the road surface , preferably subsequent to the second step and/or the step of Fig . 11 , wherein the interception device is in an open configuration;
• FIG. 14 is a lateral sectional view of a scari fication and recycling assembly according to one embodiment of the present invention, said assembly being mounted on an operating machine , in particular a mini loader, having a mobile arm of an operating machine to which the scari fication and recycling assembly is connected, during a machining step of the method for restoring the road surface , optionally and preferably subsequent to the step of Fig . 13 , wherein the interception device is in a closed configuration;
• FIG. 15 is a lateral view of a step of machining the road surface , preferably subsequent to the step of Fig . 14 , according to one embodiment of the method for restoring a road surface , wherein the compaction is performed;
• FIG. 16 is a lateral sectional view of a scari fication and recycling assembly mounted on an operating machine , in particular a mini-loader, having a mobile arm of an operating machine to which the scari fication and recycling assembly is connected, during a machining step of the method for restoring the road surface and wherein the direction of advancement of the operating machine is opposite that of the direction of advancement Y of Fig . 13 ;
• - Fig . 17 is a lateral sectional view of a scari fication and recycling assembly mounted on an operating machine , in particular on the back of a tractor with a hydraulic power take-off , during a machining step of the method for restoring the road surface ;
• - Fig. 18 is a lateral sectional view of a scarification and recycling assembly mounted on an operating machine, in particular on the back of a tractor with a mechanical power take-off, during a machining step of the method for restoring the road surface.
• the reference number 1 designates, in its entirety, a cold scarification and recycling assembly 1 for restoring a damaged road pavement P, which has holes or cracks at least in its outermost layer.
• the cold scarification and recycling assembly 1 (or, more simply, the scarification and recycling assembly 1) is an integrated assembly which carries out both the functions of scarification of the road pavement and of cold recycling (that is, regenerating the conglomerate for reapplication) in a single machine.
• Said scarification and recycling assembly 1 is further suitable for being directly connected to a mobile arm of an operating machine 2, for example a miniloader, or a tractor.
• 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 scarification assembly comprises an auto-leveling body 80.
• Said scarification and recycling assembly 1 preferably comprises an assembly body 2' and an autoleveling body 80.
• the assembly body 2' comprises a coupling portion 4 to the operating machine 2 for its stable mounting, for example for mounting the assembly body 2' to a mobile arm or to a support of the operating machine .
• the auto-leveling body 80 comprises a pair of contact skids 81, 82 with the level of the road pavement P.
• 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 therefore rotatable parallel to a rotation axis that is parallel to the road pavement plane P.
• 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 guiding means comprise at least one edge of a guide slot 64' slidingly engaged by at least one guide pin 66.
• 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 adj acent to one another and spaced apart in front of the other .
• the contact skids 81 , 82 are created by means of bent metal sheets .
• the assembly body 2 ' is at least partially housed between the contact skids 81 , 82 .
• 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 scari fication and recycling assembly 1 comprises a scari fication group 10 housed in a first region D of the scari fication and recycling assembly 1 .
• Said scari fication group 10 comprises an excavation tool 100 for removing the conglomerate material of one or more layers of asphalt along a linear advancement path along a working surface S of the road pavement P in order to obtain a scari fied conglomerate material C .
• the cold scari fication and recycling assembly 1 comprises a recycling group 20 housed within a second region R of the scari fication and recycling assembly 1 .
• Said recycling group 20 comprises a mixing and shredding element 200 of the scari fied conglomerate material C .
• Said second region R is arranged downstream of the first region D, so that the scari fied conglomerate material C ( or milled conglomerate C ) from the scari fication group 10 is receivable by the recycling group 20 for the regeneration thereof into regenerated conglomerate material CR ( or regenerated milled conglomerate CR) .
• 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 hydraulic type , for example hydraulic actuators .
• the drive means 102 , 202 are of the electric type , for example electric motors .
• the cold scari fication and recycling assembly 1 al so comprises an interception device 30 , which at least partially separates the first region D from the second region R to convey the passage of the scari fied conglomerate material C from the first region D to the second region R .
• the interception device According to one embodiment , the interception device
• the interception device 30 is actively movable in a close configuration and in an open configuration.
• 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.
• the cold scarification and recycling assembly 1 also comprises a water and/or regenerating fluid dispensing device 40 suitable for dispensing water and/or regenerating fluid directly in the first region D and/or in the second region R.
• the cold scarification and recycling assembly 1 comprises a pump group 64 configured for collecting water and/or regenerating fluid from a tank and conveying it toward the water and/or regenerating fluid dispensing device 40 .
• the regenerating fluid is a fluid suitable for again allowing the cohesion between the granules of the milled conglomerate so as to allow the restoration of the road pavement once the regenerated milled conglomerate is recompacted .
• regenerating fluid is therefore intended to also mean an additive fluid or a bituminous binding agent .
• the regenerating fluid is a bitumen mixture or a mixture containing a hydrocarbon binding agent .
• the regenerating fluid is preferably the fluid sold under the commercial name Iterlene ACF 1000 HP GREEN by the company Iterchimica Sri , Bergamo , Italy .
• a further obj ect 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 Sri , Bergamo , Italy, for restoring a road surface in a cold process directly on the street , and more particularly the use of a cold scari fication 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) .
• the cold scari fication and recycling assembly 1 further comprises a sieving element 50 arranged downstream from the recycling group 20 and suitable for receiving the regenerated conglomerate material CR and sieving a predefined particle si ze of regenerated conglomerate material CR for trans fer to the working surface S .
• the sieving element 50 is an element suitable for preventing the passage of a determined si ze of milled conglomerate material C or of regenerated conglomerate material CR in order to keep it broken up in the recycling group 20 unless a desired, typically finer, si ze of the granules of the material is reached, which material is then discharged downstream of the sieving element , for example because it passes through the apertures or the meshes of the sieving element 50 .
• the sieving element 50 therefore, allows the passage of the granules of the milled conglomerate material C or of the regenerated conglomerate material CR from the recycling group 20 toward the working surface S only upon reaching a desired si ze of the granules ( i . e . , the discharge only of the milled conglomerate material or of the regenerated conglomerate CR having a determined size) .
• the assembly body 2' is connected to the auto-leveling body 80 via at least one adjusting device 24 for adjusting the excavation depth D' of the assembly 1.
• the function of the adjusting device 24 according to said variant is therefore that of modifying or adjusting the protrusion of the excavation tool 100 with respect to the contact skids 81, 82 and, thus, adjusting the excavation depth D' .
• the adjusting device 24 is operated (for example via the wrench or the adjusting tool U, or in a pneumatic, hydraulic, mechanical or electric manner) for the purpose of determining the excavation depth D' .
• 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 excavation tool 100 is a milling drum which is rotatable about a milling drum rotation axis X substantially parallel to the working surface S of the road pavement P .
• the milling drum is provided with cutting elements 101 for removing the conglomerate material of the road surface .
• the mixing and shredding element 200 is a mixing drum, rotatable about a mixing drum rotation axis X' which is parallel and spaced apart with respect to the milling drum rotation axis X .
• the mixing drum is preferably provided with protruding elements 201 , for example elements proj ecting radially with respect to the mixing drum rotation axis X ' .
• the scari fication group 10 comprises a scari fication 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 scari fication 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 scari fication 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 interception device 30 is suitable for maintaining itsel f in support against the base of the road surface being worked and for being passively guided in translation along a translation direction Z in order to follow the course of the base of the road surface being worked
• the bulkhead 30 ' is suitable for maintaining itsel f in support on the road surface , closing or opening the conglomerate passage opening 22 in a variable manner according to the course of the road surface and the working depth .
• 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 According to one embodiment , the interception device
• a bulkhead movement group 70 for example one or more hydraulic or electric cylinders , connected to the bulkhead 30 ' and to the scari fication 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 adj usting the amount of water and/or regenerating fluid to be dispensed via the water and/or regenerating fluid dispensing device 40 .
• the water and/or regenerating fluid dispensing device 40 comprises one or more dispensing noz zles having a dispensing mouth which directly faces into the scari fication chamber 11 and/or into the recycling chamber 21 .
• 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 dosing unit may be installed on the assembly 1 or may be relocated on the operating machine 2 and comprise fluidic means for supplying the regenerating fluid or water toward the water and/or regenerating fluid dispensing device 40 .
• the cold scari fication and recycling assembly 1 comprises a speed detector device 60 .
• the cold scari fication and recycling assembly 1 comprises a depth detector device .
• the speed detector device 60 is operatively connected to the dosing unit and suitable for detecting the advancement speed of the cold scari fication and recycling assembly along the working surface S .
• the dosing unit is suitable for adj usting the amount of water and/or regenerating fluid to be dispensed according to the advancement speed detected by the speed detector device 60 .
• the depth detector device is operatively connected to a dosing unit and is suitable for detecting the scari fication depth D' of the road pavement P performed by the scari fication group 10 with respect to the plane of the road pavement P .
• the dosing unit is suitable for adj usting the amount of water and/or regenerating fluid to be dispensed according to the depth detected by the depth detector device 60 .
• the cold scari fication and recycling assembly 1 may comprise only the speed detector device 60 , or both the speed detector device 60 and 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 depth detector device comprises , for example , a distance detector, such as a laser, optic or ultrasound detector or a mechanical distance detector .
• 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 axi s 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 scari fication and recycling ass e mb 1 y 1 .
• the speed detector device 60 comprises a wheel rotation speed sensor, for example an electronic encoder .
• the wheel support group 62 comprises a wheel support arm 63 .
• 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 scari fication 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 scari fication 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 sieving element 50 is a wall comprising sieve openings having a section of a si ze recordable via manual control or via an electrical or hydraulic or mechanical actuator operatively connected to the sieving element 50 .
• the scari fication and recycling assembly comprises a second wall in relative movement with respect to the sieving element 50 so as to reduce or expand the section of the sieve openings .
• the second wall and the sieving element 50 are two walls , preferably in the form of a cylindrical or semi-cylindrical sector, slidable in relation to one another for opening or closing the sieve openings .
• 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 of f completely .
• a further obj ect of the present invention is an operating machine 2 comprising a cold scari fication 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 miniloader .
• Said operating machine 2 is preferably provided with at least one fluidic power take-of f 41 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 electrical power take-of f 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-of f 42 for powering the drive means
• another obj ect of the present invention is a method for restoring a road surface which utili zes an operating machine 2 to which a cold scari fication and recycling assembly 1 as previously described is attached .
• the method in its most general embodiment , shown for example in Fig . 16 or 17 or 18 , comprises the following operational steps :
• the method further comprises the operational step of:
• a further embodiment of a method for restoring a road surface which utilizes an operating machine 2 to which a cold scarification and recycling assembly 1 as previously described is attached is shown, for example, in the sequence of figures from 11 to 15.
• the method for restoring a road surface comprises the operational steps of:
• a binding agent L preferably a hydraulic binding agent, for example cement
• 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' the injection of regenerating fluid and possibly water involves :
• the method for restoring a road surface comprises the optional step of :
• step h) is shown, for example , in Fig . 14 in an exemplary embodiment wherein the scari fication and recycling assembly 1 is moved on the regenerated milled conglomerate CR following the execution of the preceding step e ) , or of the preceding step c' ) or of the preceding step d) .
• step h) allows an adequate remixing of the regenerated milled conglomerate CR, for example without having to further crush the conglomerate or reduce the si ze of the pieces being worked in the recycling group 20 .
• the present invention is suitable for overcoming the drawbacks related to the prior art .
• the cold scari fication and recycling assembly of the present invention makes it possible to restore a damaged road surface without the need for removing and carrying the road surface material elsewhere , but by regenerating the same removed material and redepositing it anew on the road surface .
• the assembly according to the present invention turns out to be particularly compact and suitable for the speci fic purpose of repairing small plots .
• the assembly according to the present invention does not require bulky and non-sel f-propelled conglomerate regeneration machines , but executes the operation of scari fication and regeneration and placement of the conglomerate in an integrated manner .
• the fact that the assembly according to the present invention is suitable for being directly connected to a mobile arm of an operating machine and, preferably, the fact that it is configured both for being pulled and for being pushed renders the use of the assembly itsel f particularly versatile and flexible .
• the assembly according to the present invention is easily connectable to the maj ority of known operating machines and does not require the application of sensitive modi fications to the design of the known 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 ef fective and ef ficient .
• 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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• 2021
  • 2021-11-19 IT IT102021000029318A patent/IT202100029318A1/it unknown
• 2022
  • 2022-11-18 WO PCT/IB2022/061130 patent/WO2023089547A1/en active Application Filing
  • 2022-11-18 CA CA3236698A patent/CA3236698A1/en active Pending
  • 2022-11-18 AU AU2022393944A patent/AU2022393944A1/en active Pending

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