EP2118374A1 - System for applying asphalt surface with a receiving unit, a feeding unit, a surface treatment unit and a method for applying asphalt - Google Patents

System for applying asphalt surface with a receiving unit, a feeding unit, a surface treatment unit and a method for applying asphalt

Info

Publication number
EP2118374A1
EP2118374A1 EP08723965A EP08723965A EP2118374A1 EP 2118374 A1 EP2118374 A1 EP 2118374A1 EP 08723965 A EP08723965 A EP 08723965A EP 08723965 A EP08723965 A EP 08723965A EP 2118374 A1 EP2118374 A1 EP 2118374A1
Authority
EP
European Patent Office
Prior art keywords
asphalt
unit
treatment unit
surface treatment
applying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08723965A
Other languages
German (de)
French (fr)
Inventor
Mats RØNNBO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skanska Asfalt AS
Original Assignee
Skanska Asfalt AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Skanska Asfalt AS filed Critical Skanska Asfalt AS
Publication of EP2118374A1 publication Critical patent/EP2118374A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • 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
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • 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
    • E01C2301/02—Feeding devices for pavers
    • E01C2301/04—Independent shuttles

Definitions

  • the present invention concerns a system for applying asphalt where a surface treatment unit, in particular for removing water, is placed between a receiving unit for asphalt and a feeding unit for asphalt. Furthermore the invention concerns a surface treatment unit for removing primarily water, for placement between the asphalt feeding unit and the receiving unit for the asphalt.
  • a method for applying asphalt is also discussed.
  • asphalt During the application of asphalt on a cover, for instance on previously applied asphalt, it is a problem if it is water, gravel, leaves, snow, ice etc. on the cover when the new asphalt is to be applied. Normally is humidity not a considerable problem, but free water in ponds and pools prevents application of asphalt. Accordingly it has been a problem to apply asphalt when it is raining.
  • an asphalt adhesive is known from NO 156096.
  • GB 2 097 844 it is shown an asphalt applying machine that heats the asphalt that is to be covered before new asphalt is applied.
  • the present invention concerns a system for applying asphalt on a surface with a receiving unit for asphalt and a feeding unit for asphalt.
  • the system further includes a unit for removing liquid, snow, foreign bodies or ice placed between the asphalt feeding unit and the receiving unit for the asphalt.
  • the asphalt feeding unit may be attached to a common asphalt applying machine, and frequently includes a feeding screw for feeding the asphalt, often attached at the rear part of the asphalt applicator.
  • the asphalt applicator frequently also includes a unit for applying adhesives, glue or cement, and the unit according to the invention should preferably be placed ahead of this unit such that the asphalt can be made free for foreign bodies, pools of water, snow or ice before the adhesive is applied.
  • the receiving unit for asphalt is adapted for reception of asphalt, typically from a tipping lorry, and often forms a part of a separate feeding unit for feeding asphalt to the asphalt application unit.
  • a receiving unit for asphalt may however also be mounted onto an asphalt application unit such that a tipping lorry can dump asphalt directly into the asphalt applicator.
  • the asphalt feeding unit is typically placed in front of a screed that evens out the asphalt before it is to be compacted by a roller or a similar unit.
  • the unit may include one or several separate engines/motors and /or can be driven hydrostatically, electrically or in other way of other drive units.
  • the unit may be an integrated part of an asphalt feeder.
  • the unit may constitute a separate module for attachment to the feeder such that the unit can be pulled after the feeder for instance as a trailer.
  • the unit may be in an integrated part of the asphalt applicator.
  • the unit may form a separate module for attachment to the asphalt applicator.
  • the unit may form a separate, self controlled unit without any connection to the other elements.
  • This unit may also include a separate engine and a control system.
  • the unit may of course also be manned.
  • a surface treatment unit for removing liquids, snow, foreign bodies or ice from a surface that is to applied with a width of asphalt layer.
  • the surface treatment unit is adapted for operation ahead of an asphalt feeding unit, and includes at least one driven brush for brushing in a width that is greater that the width of the layer of asphalt that is to be applied.
  • a further treatment unit for treating the surface that is to be applied with the width of asphalt layer is placed ahead of, behind or at both sides of the brush in a normal direction of operation.
  • the further treatment unit may be a blower with nozzles for blowing air toward the surface that is to be treated.
  • the further treatment unit may be a suction unit with nozzles for sucking up elements form the surface that is to be treated.
  • the further treatment unit may be a heating unit for heating the surface that is to be treated.
  • the treatment unit may perform any combination of blowing, sucking and heating.
  • the at least one brush may include a substantially cylindrical brush with a length that is greater than the width of the layer of asphalt that is to be applied.
  • the at least one brush may revolve about a substantially vertical axis.
  • the invention concerns a method for applying asphalt on a surface with unwanted elements, with a system as described above including pouring mass of asphalt into a receiving unit for asphalt, remove foreign bodies from the surface with a surface treatment unit and to applying the mass of asphalt onto the surface with an asphalt feeding unit. Unwanted elements in this connection are water, snow, ice.
  • Figure 1 shows a system according to the invention form the side, where a first surface treatment unit is placed at a first distance ahead of an asphalt feeding unit and is attached in a feeder;
  • Figure 2 shows the system shown on figure 1 , seen from the side, where a first surface treatment unit is placed at a second distance ahead of an asphalt feeding unit;
  • Figure 3 shows an alternative embodiment of a surface treatment unit according to the invention
  • Figure 3.1 -3.4 shown an alternative embodiment of the surface treatment unit according to the invention.
  • Figure 4 shows a different embodiment of a surface treatment unit according to the invention.
  • Figure 5 shows yet a further embodiment of a system according to the invention, seen from the side.
  • Figure 1 shows a system, substantially well known within subject area, where a receiving unit 4 for asphalt is placed on a so-called “feeder” 8.
  • the receiving unit 4 is adapted in such a way that the asphalt from for instance a tipping lorry, is dumped into this. From there, the asphalt is led further, such that it finally ends up in an asphalt feeding unit 3.
  • the asphalt feeding unit 3 placed on a "paver” or asphalt application unit 7.
  • the asphalt applicator or paver 7 includes a funnel shaped unit 5 for receiving the asphalt from the feeder 8. Behind the asphalt feeding unit 3, it is placed a screed for levelling out the asphalt.
  • the system includes a surface treatment unit 1 according to the invention, for surface treatment of the surface that is to be covered with new asphalt.
  • the surface treatment unit 1 is adapted for removing liquid, snow and foreign bodies or ice on the surface.
  • the surface treatment unit 1 may be adapted to various purposes and in relation to the primary foreign bodies that is to be removed. For instance during the removal of ice, will heat be more relevant to use.
  • asphalt it is a problem if it is pools, loose elements, snow or ice on the surface that is to be covered with asphalt. Such elements may create poor adhesion between the cover and the new asphalt, and may also create defects in the asphalt itself that may form basis for pot holes and defects in the surface later on.
  • the surface treatment unit 1 is attached to the feeder 8 by means of a rigid strut 2.
  • FIG 2 it is shown a system as shown on figure 1 with a receiving unit 4 for the asphalt, a feeder 8 and an asphalt applicator 7.
  • the asphalt applicator has also in this case an asphalt feeding unit 3, a screed 6 and a funnel 5 for receiving asphalt.
  • the surface treatment unit 1 attached in the asphalt applicator 7 through a rigid strut 2.
  • the asphalt application unit 1 is shown with a brush and a further treatment unit for treating the surface that is to be applied with the asphalt cover or layer.
  • the further treatment unit may be a blowing unit with nozzles for blowing air towards the surface that is to be treated.
  • the nozzles may be directed towards or transversal in relation to the cover.
  • the treatment unit may also include a suction unit with nozzles sucking up elements from the surface that is to be treated, a heating unit for heating the surface that is to be treated, or any combination of these elements.
  • the treatment unit may include a separate engine/motor for driving the brush, and may include compressors for blowing air or for sucking air from the surface. If the treatment unit is a heating unit, it may typically include burners that heat the surface directly, or that heat air that will be blowed through a compressor.
  • the further treatment unit will typically include nozzles that are directed towards or traversal in relation to the surface that is to be treated.
  • the further treatment unit may preferably be able to treat the entire width that is to be applied with a layer of asphalt.
  • the brush 1 may typically be a cylindrical brush with a length adapted to the width of layer of asphalt that is to be applied.
  • the treatment unit may also include means that absorb for instance water and foreign bodies that are swept by the brush, such that these not are brought further by the brush.
  • the brush may be inclined such that the foreign bodies on the surface that is to be treated is pushed out to the side of the surface that is to be covered.
  • the cylindrical brush may be substituted with several brushes that revolve about a vertical axis, or a substantially vertical axis, with brushes well known from fields such as washing roads and renovation.
  • the brushes may as mentioned be directly driven by for instance a combustion engine, by hydraulics from one of the other units in the system, by suitable electric motors, or by any sort of other elements known within the filed.
  • FIG 3 it is shown a surface treatment unit 1 with a brush 12 and two air nozzles 13, 14.
  • the air nozzle 14 blows air through a duct 16 ahead of the brush 12 and air nozzles 13 blows air behind the brush 12.
  • a motor in a proportion unit 10 is placed together with the brush 12 and the air nozzles 13, 14.
  • the proportion unit also includes an air compressor and equipment for driving the brush 12, for instance through a hydrostatic transmission.
  • a pivoting unit 15 enables the brush to be inclined in relation to a direction of propulsion.
  • the unit may be attached to other units for instance at attachment point 11 , or may as previously mentioned be made as a separate self propelled unit.
  • Units of this type are commonly known within other subject areas, in particular for clearing runways. From the figures 3.1-3.4 it is shown alternative embodiments of the invention with a brush 12. On figure 3.1 it is shown a blower or blowing unit 20, on figure 3.2, it is shown a suction unit 21 and on figure 3.3 it is shown a combined blowing 20 and suction unit 21. On figure 3.4 it is shown a unit with a propulsion unit 10, a wheel 17/18, an air nozzle 13 and a brush 12. The unit is shown attached to an asphalt applicator 7.
  • the propulsion unit may include a motor, hydraulic equipment, an air compressor/blower with a fan etc.
  • FIG 4 it is shown a surface treatment unit corresponding to the one shown on figure 3, but where the unit further includes controllable wheels 17 such that the unit is adapted for being self-propelled between a receiving unit for asphalt and an asphalt feeding unit.
  • the propulsion unit 10 be able to drive the wheels of the unit, and the unit can be driven either automatically in that it communicates with for instance the asphalt applicator such that it maintains a suitable distance between the asphalt applicator and the surface treatment unit 1.
  • Propulsion of the wheels 17, 18 may be performed hydrostatically or in any other way well known within the field. If the unit is to be driven unmanned, it may include common systems for measurement of distance, systems that controls the speed of the feeder, system that records the distance between the treatment unit and the feeder etc. Alternatively the communication may be performed through a cable, as the distance between the surface treatment unit and the asphalt applicator should be limited.
  • Figure 5 shows an alternative embodiment of the invention, where the surface treatment unit 1 is integrated in an asphalt feeder 7, and where it is clearly shown that the surface treatment unit 1 is situated between the asphalt feeding unit 3 and the receiving unit 4 for asphalt. Normally will also a unit for applying an adhesive be situated between the surface treatment unit 1 and the asphalt feeding unit 3.
  • the surface treatment unit,1 may as previously mentioned, be connected to the asphalt applicator 7, the feeder, be a self-contained unit, or may be integrated in one of these and provides a free surface without any pools of water. The result of this is that the work can be performed even in rain.
  • An adhesive system is often attached to the asphalt applicator and this unit portions the right amount of adhesive to the surface before the screed finally ensures ideal application of mass with good quality and a good final result.
  • the adhesive system is attached ahead of the asphalt feeding unit 3.
  • the asphalt trailer dump the mass to a trough with a feeding conveyer belt that is integrated with the asphalt applicator and that can receive great volumes, for instance 10 ton.
  • a feeding conveyer belt that is integrated with the asphalt applicator and that can receive great volumes, for instance 10 ton.
  • the surface treatment unit 1 placed ahead of or below the asphalt applicator for instance as shown on figure 5.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
  • Road Paving Machines (AREA)
  • Road Paving Structures (AREA)

Abstract

The present invention concerns a system for applying asphalt to a surface with a receiving unit (4) for asphalt and an asphalt feeding unit (3). A surface treatment unit (1) for removal of liquid, snow, foreign bodies or ice is placed between the asphalt feeding unit (3), and the receiving unit (4) for the asphalt. Furthermore it is described a surface treatment unit (1 ) for treatment and removal of liquid, snow, foreign bodies or ice from a surface that is to be applied with a width of asphalt layer in addition to a method for applying asphalt.

Description

System for applying asphalt surface with a receiving unit, a feeding unit, a surface treatment unit and a method for applying asphalt
The present invention concerns a system for applying asphalt where a surface treatment unit, in particular for removing water, is placed between a receiving unit for asphalt and a feeding unit for asphalt. Furthermore the invention concerns a surface treatment unit for removing primarily water, for placement between the asphalt feeding unit and the receiving unit for the asphalt. A method for applying asphalt is also discussed. During the application of asphalt on a cover, for instance on previously applied asphalt, it is a problem if it is water, gravel, leaves, snow, ice etc. on the cover when the new asphalt is to be applied. Normally is humidity not a considerable problem, but free water in ponds and pools prevents application of asphalt. Accordingly it has been a problem to apply asphalt when it is raining. To clean a layer for applying asphalt thereafter or an asphalt adhesive is known from NO 156096.
In GB 2 097 844 it is shown an asphalt applying machine that heats the asphalt that is to be covered before new asphalt is applied.
In US 4 376 007 it is shown a machine for treating a road surface. The unit washes and dries areas for road marking.
Systems for removing water, snow and ice from surfaces are known in connection with the operation of runways.
However, none of these publications suggest a solution for removing water and foreign objects from a surface for thereafter applying asphalt, or applying asphalt in rain.
Accordingly, the present invention concerns a system for applying asphalt on a surface with a receiving unit for asphalt and a feeding unit for asphalt. The system further includes a unit for removing liquid, snow, foreign bodies or ice placed between the asphalt feeding unit and the receiving unit for the asphalt. The asphalt feeding unit may be attached to a common asphalt applying machine, and frequently includes a feeding screw for feeding the asphalt, often attached at the rear part of the asphalt applicator. The asphalt applicator frequently also includes a unit for applying adhesives, glue or cement, and the unit according to the invention should preferably be placed ahead of this unit such that the asphalt can be made free for foreign bodies, pools of water, snow or ice before the adhesive is applied.
The receiving unit for asphalt is adapted for reception of asphalt, typically from a tipping lorry, and often forms a part of a separate feeding unit for feeding asphalt to the asphalt application unit. A receiving unit for asphalt may however also be mounted onto an asphalt application unit such that a tipping lorry can dump asphalt directly into the asphalt applicator.
The asphalt feeding unit is typically placed in front of a screed that evens out the asphalt before it is to be compacted by a roller or a similar unit.
The unit may include one or several separate engines/motors and /or can be driven hydrostatically, electrically or in other way of other drive units.
The unit may be an integrated part of an asphalt feeder.
The unit may constitute a separate module for attachment to the feeder such that the unit can be pulled after the feeder for instance as a trailer.
The unit may be in an integrated part of the asphalt applicator.
The unit may form a separate module for attachment to the asphalt applicator.
The unit may form a separate, self controlled unit without any connection to the other elements. This unit may also include a separate engine and a control system. The unit may of course also be manned.
Furthermore it is described a surface treatment unit for removing liquids, snow, foreign bodies or ice from a surface that is to applied with a width of asphalt layer. The surface treatment unit is adapted for operation ahead of an asphalt feeding unit, and includes at least one driven brush for brushing in a width that is greater that the width of the layer of asphalt that is to be applied. A further treatment unit for treating the surface that is to be applied with the width of asphalt layer is placed ahead of, behind or at both sides of the brush in a normal direction of operation. The further treatment unit may be a blower with nozzles for blowing air toward the surface that is to be treated.
The further treatment unit may be a suction unit with nozzles for sucking up elements form the surface that is to be treated. The further treatment unit may be a heating unit for heating the surface that is to be treated.
Alternatively may the treatment unit perform any combination of blowing, sucking and heating. The at least one brush may include a substantially cylindrical brush with a length that is greater than the width of the layer of asphalt that is to be applied.
The at least one brush may revolve about a substantially vertical axis. Furthermore the invention concerns a method for applying asphalt on a surface with unwanted elements, with a system as described above including pouring mass of asphalt into a receiving unit for asphalt, remove foreign bodies from the surface with a surface treatment unit and to applying the mass of asphalt onto the surface with an asphalt feeding unit. Unwanted elements in this connection are water, snow, ice.
Short description of the enclosed figures:
Figure 1 shows a system according to the invention form the side, where a first surface treatment unit is placed at a first distance ahead of an asphalt feeding unit and is attached in a feeder;
Figure 2 shows the system shown on figure 1 , seen from the side, where a first surface treatment unit is placed at a second distance ahead of an asphalt feeding unit;
Figure 3 shows an alternative embodiment of a surface treatment unit according to the invention;
Figure 3.1 -3.4 shown an alternative embodiment of the surface treatment unit according to the invention;
Figure 4 shows a different embodiment of a surface treatment unit according to the invention; and
Figure 5 shows yet a further embodiment of a system according to the invention, seen from the side.
Detailed description if embodiments of the invention with reference to the figures:
Figure 1 shows a system, substantially well known within subject area, where a receiving unit 4 for asphalt is placed on a so-called "feeder" 8. The receiving unit 4 is adapted in such a way that the asphalt from for instance a tipping lorry, is dumped into this. From there, the asphalt is led further, such that it finally ends up in an asphalt feeding unit 3. In the shown embodiment is the asphalt feeding unit 3 placed on a "paver" or asphalt application unit 7. In the shown embodiment the asphalt applicator or paver 7 includes a funnel shaped unit 5 for receiving the asphalt from the feeder 8. Behind the asphalt feeding unit 3, it is placed a screed for levelling out the asphalt. Furthermore the system includes a surface treatment unit 1 according to the invention, for surface treatment of the surface that is to be covered with new asphalt. The surface treatment unit 1 is adapted for removing liquid, snow and foreign bodies or ice on the surface. The surface treatment unit 1 may be adapted to various purposes and in relation to the primary foreign bodies that is to be removed. For instance during the removal of ice, will heat be more relevant to use. During application of asphalt, it is a problem if it is pools, loose elements, snow or ice on the surface that is to be covered with asphalt. Such elements may create poor adhesion between the cover and the new asphalt, and may also create defects in the asphalt itself that may form basis for pot holes and defects in the surface later on. The surface treatment unit 1 is attached to the feeder 8 by means of a rigid strut 2.
In figure 2 it is shown a system as shown on figure 1 with a receiving unit 4 for the asphalt, a feeder 8 and an asphalt applicator 7. The asphalt applicator has also in this case an asphalt feeding unit 3, a screed 6 and a funnel 5 for receiving asphalt.
In the embodiment shown on figure 2 is the surface treatment unit 1 attached in the asphalt applicator 7 through a rigid strut 2. The asphalt application unit 1 is shown with a brush and a further treatment unit for treating the surface that is to be applied with the asphalt cover or layer.
The further treatment unit may be a blowing unit with nozzles for blowing air towards the surface that is to be treated. The nozzles may be directed towards or transversal in relation to the cover. The treatment unit may also include a suction unit with nozzles sucking up elements from the surface that is to be treated, a heating unit for heating the surface that is to be treated, or any combination of these elements. The treatment unit may include a separate engine/motor for driving the brush, and may include compressors for blowing air or for sucking air from the surface. If the treatment unit is a heating unit, it may typically include burners that heat the surface directly, or that heat air that will be blowed through a compressor. The further treatment unit will typically include nozzles that are directed towards or traversal in relation to the surface that is to be treated.
The further treatment unit may preferably be able to treat the entire width that is to be applied with a layer of asphalt.
The brush 1 may typically be a cylindrical brush with a length adapted to the width of layer of asphalt that is to be applied. The treatment unit may also include means that absorb for instance water and foreign bodies that are swept by the brush, such that these not are brought further by the brush. Alternatively the brush may be inclined such that the foreign bodies on the surface that is to be treated is pushed out to the side of the surface that is to be covered. Alternatively the cylindrical brush may be substituted with several brushes that revolve about a vertical axis, or a substantially vertical axis, with brushes well known from fields such as washing roads and renovation.
Also in this case it may be used elements that receive the swept elements.
The brushes may as mentioned be directly driven by for instance a combustion engine, by hydraulics from one of the other units in the system, by suitable electric motors, or by any sort of other elements known within the filed.
In figure 3 it is shown a surface treatment unit 1 with a brush 12 and two air nozzles 13, 14. The air nozzle 14 blows air through a duct 16 ahead of the brush 12 and air nozzles 13 blows air behind the brush 12. A motor in a proportion unit 10 is placed together with the brush 12 and the air nozzles 13, 14. The proportion unit also includes an air compressor and equipment for driving the brush 12, for instance through a hydrostatic transmission.
A pivoting unit 15 enables the brush to be inclined in relation to a direction of propulsion. The unit may be attached to other units for instance at attachment point 11 , or may as previously mentioned be made as a separate self propelled unit.
Units of this type are commonly known within other subject areas, in particular for clearing runways. From the figures 3.1-3.4 it is shown alternative embodiments of the invention with a brush 12. On figure 3.1 it is shown a blower or blowing unit 20, on figure 3.2, it is shown a suction unit 21 and on figure 3.3 it is shown a combined blowing 20 and suction unit 21. On figure 3.4 it is shown a unit with a propulsion unit 10, a wheel 17/18, an air nozzle 13 and a brush 12. The unit is shown attached to an asphalt applicator 7. The propulsion unit may include a motor, hydraulic equipment, an air compressor/blower with a fan etc.
From figure 4 it is shown a surface treatment unit corresponding to the one shown on figure 3, but where the unit further includes controllable wheels 17 such that the unit is adapted for being self-propelled between a receiving unit for asphalt and an asphalt feeding unit. In this embodiment will the propulsion unit 10 be able to drive the wheels of the unit, and the unit can be driven either automatically in that it communicates with for instance the asphalt applicator such that it maintains a suitable distance between the asphalt applicator and the surface treatment unit 1. Propulsion of the wheels 17, 18 may be performed hydrostatically or in any other way well known within the field. If the unit is to be driven unmanned, it may include common systems for measurement of distance, systems that controls the speed of the feeder, system that records the distance between the treatment unit and the feeder etc. Alternatively the communication may be performed through a cable, as the distance between the surface treatment unit and the asphalt applicator should be limited.
Figure 5 shows an alternative embodiment of the invention, where the surface treatment unit 1 is integrated in an asphalt feeder 7, and where it is clearly shown that the surface treatment unit 1 is situated between the asphalt feeding unit 3 and the receiving unit 4 for asphalt. Normally will also a unit for applying an adhesive be situated between the surface treatment unit 1 and the asphalt feeding unit 3.
During normal operation of such systems will an asphalt trailer dump mass of asphalt to the receiving unit 4 on a feeder 8 that can accommodate great volumes, for instance 30 ton. Mass for the laying of asphalt is frequently fed via a long, heated conveyer belt with asphalt to the place of work. The surface treatment unit,1 may as previously mentioned, be connected to the asphalt applicator 7, the feeder, be a self-contained unit, or may be integrated in one of these and provides a free surface without any pools of water. The result of this is that the work can be performed even in rain. An adhesive system is often attached to the asphalt applicator and this unit portions the right amount of adhesive to the surface before the screed finally ensures ideal application of mass with good quality and a good final result. The adhesive system is attached ahead of the asphalt feeding unit 3.
Alternatively may the asphalt trailer dump the mass to a trough with a feeding conveyer belt that is integrated with the asphalt applicator and that can receive great volumes, for instance 10 ton. In this case is the surface treatment unit 1 placed ahead of or below the asphalt applicator for instance as shown on figure 5.

Claims

PATENT CLAIMS
1. System for applying asphalt onto a surface with a receiving unit (4) for asphalt and an asphalt feeding unit (3), characterized in: a surface treatment unit (1) for removing liquid, snow, foreign bodies or ice placed between the asphalt feeding unit (3) and receiving unit (4) for the asphalt.
2. System for applying asphalt according to claim 1 , wherein the surface treatment unit (1) is an integrated part of the receiving unit 4 for the asphalt.
3. System for applying asphalt according to claim 1 , wherein the surface treatment unit (1) is formed as a separate module for attachment to the receiving unit (4) for the asphalt.
4. System for applying asphalt according to claim 1 , wherein the surface treatment unit (1) is an integrated part of the asphalt feeding unit (3).
5. System for applying asphalt according to claim 1 , wherein the surface treatment unit (1) constitutes a separate module for attachment to the asphalt feeding unit (3).
6. System for applying asphalt according to claim 1 , wherein the surface treatment unit (1) forms a separate, self-controlled unit without connection to other elements.
7. Surface treatment unit (1) for removal of liquid, snow, foreign bodies or ice from a surface that is to be applied with a width of asphalt layer, characterized in that: it is adapted for operation ahead of an asphalt feeding unit (3) and includes at least one driven brush (12) for brushing in a width that is greater than the width of the layer of asphalt that is to be applied; and a further treatment unit for treating the surface that is to be applied the width of asphalt cover, situated behind the cylindrical brush in a normal direction of operation.
8. Surface treatment unit (1) according to claim 7, wherein the further treatment unit is a blowing unit with nozzles (13, 14) for blowing air towards the surface that is to be treated.
9. Surface treatment unit (1) according to claim 7, wherein the further treatment unit is a suction unit with nozzles (13, 14) for suction of elements from the surface that is to be treated.
10. Surface treatment unit (1) according to claim 7, wherein the further treatment unit is a heating unit for heating the surface that is to be treated.
11. Surface treatment unit (1) according to claims 7-10, including a combination of elements according to the claims 8-10.
12. Surface treatment unit (1) according to claim 7, wherein the at least one brush includes a substantially cylindrical brush (12) with a length that is greater that the width of the asphalt layer that is to be applied.
13. Surface treatment unit (1) according to claim 7, wherein the at least one brush revolves about a substantially vertical axis.
14. A method for applying asphalt to a surface with unwanted elements with a system as defined in claim 1 , comprising the following steps; pouring mass of asphalt into a receiving unit (4) for asphalt; removing foreign bodies from the surface with a surface treatment unit (1); and applying the mass of asphalt onto the surface with an asphalt feeding unit
(3).
EP08723965A 2007-02-28 2008-02-26 System for applying asphalt surface with a receiving unit, a feeding unit, a surface treatment unit and a method for applying asphalt Withdrawn EP2118374A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20071146A NO328329B1 (en) 2007-02-28 2007-02-28 System for continuous laying of a width of new asphalt coating on a previously laid asphalt pavement, as well as a surface treatment unit for such use.
PCT/NO2008/000071 WO2008111842A1 (en) 2007-02-28 2008-02-26 System for applying asphalt surface with a receiving unit, a feeding unit, a surface treatment unit and a method for applying asphalt

Publications (1)

Publication Number Publication Date
EP2118374A1 true EP2118374A1 (en) 2009-11-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08723965A Withdrawn EP2118374A1 (en) 2007-02-28 2008-02-26 System for applying asphalt surface with a receiving unit, a feeding unit, a surface treatment unit and a method for applying asphalt

Country Status (3)

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EP (1) EP2118374A1 (en)
NO (1) NO328329B1 (en)
WO (1) WO2008111842A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3907450A (en) * 1974-05-06 1975-09-23 Cutler Repaving Inc Scarifier for use with asphalt concrete roadway refinishing apparatus
US4129398A (en) * 1975-12-05 1978-12-12 Walter Schoelkopf Method and apparatus for plastifying and tearing up of damaged road-surfaces and covers
CH695569A5 (en) * 2001-06-08 2006-06-30 Roland Baumgartner Ag Cleaning device embodied as part of cleaning vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008111842A1 *

Also Published As

Publication number Publication date
NO328329B1 (en) 2010-02-01
WO2008111842A1 (en) 2008-09-18
NO20071146L (en) 2008-08-29

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