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WO2009154551A1 - Machine and method for treating a surface - Google Patents

Machine and method for treating a surface Download PDF

Info

Publication number
WO2009154551A1
WO2009154551A1 PCT/SE2009/050731 SE2009050731W WO2009154551A1 WO 2009154551 A1 WO2009154551 A1 WO 2009154551A1 SE 2009050731 W SE2009050731 W SE 2009050731W WO 2009154551 A1 WO2009154551 A1 WO 2009154551A1
Authority
WO
WIPO (PCT)
Prior art keywords
cart
feed beam
machine according
water
lance
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.)
Ceased
Application number
PCT/SE2009/050731
Other languages
French (fr)
Inventor
Kjell Nilsson
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.)
Conjet AB
Original Assignee
Conjet AB
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 Conjet AB filed Critical Conjet AB
Priority to EP09766941.0A priority Critical patent/EP2318591B1/en
Publication of WO2009154551A1 publication Critical patent/WO2009154551A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • E01C23/128—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 hydrojets

Definitions

  • the invention pertains to a method of working a surface, for example the removing of a damaged concrete layer with a high-pressure water jet, wherein one uses a carrier, for example a vehicle, having a crosswise feed beam carrying a cart which in turn carries a water nozzle which is adjustable to give an angle of attack in the direction of movement of the cart and at the same time can oscillate in a plane transverse to the feed beam.
  • a carrier for example a vehicle, having a crosswise feed beam carrying a cart which in turn carries a water nozzle which is adjustable to give an angle of attack in the direction of movement of the cart and at the same time can oscillate in a plane transverse to the feed beam.
  • machines of this kind are known.
  • the lance oscillates in a plane transverse to the sweep directions to yield a larger working width.
  • the machine steps forward to achieve a cohesive cutting of equal depth.
  • Such machines are used, e.g., for cutting off the outer layer of concrete on a bridge roadway before pouring a new outer layer. In this way, one exposes the uppermost layer reinforcement, so that fresh concrete is then poured in when pouring the new outer layer.
  • One purpose of the invention is to allow an easy adjustment of the working depth with no risk of uneven working. This is done according to the invention in that the speed and oscillating frequency of the cart are related by a fixed ratio. By setting the speed of the cart, one sets the desired working depth and obtains an evenly worked surface.
  • the invention is def i ned by the patent claims.
  • Figure 1 shows a track-borne machine according to the invention.
  • Figure 2 shows in perspective view a feed beam from Fig. 1.
  • Figure 3 is a partial sectional view looking along arrows 3-3 in Fig. 2 of a cart shown in Fig.
  • Figure 4 is a sketch showing the principle of operation of the cart in Fig. 2 and 3 and the oscillation of a water ejecting lance, also shown in Fig. 2 and 3.
  • FIG. 1 shows a tracked vehicle 11 carrying a feed beam 12 on which a cart 13 runs, carrying a water ejecting lance 14, having a nozzle at its end end and extending through a slot 15 in a protecting shield 16.
  • the back end of the water ejecting lance is connected by high- pressure hose to an assembly with a motor-driven high-pressure water pump.
  • This pump assembly can be mounted in a container placed at a distance from the vehicle 11.
  • FIG. 2 shows the feed beam 12.
  • the cart 13 runs on two guides 17,18 and the water ejecting lance 14 is secured to a holder 19 on the cart.
  • the cart is driven by a motor 20 along a rack 21 on the feed beam 12 and the water ejecting lance 14 with its nozzle 22 is fastened to the cover of the cart.
  • FIG 3 shows the feed beam 12 with its two tubelike guides 17,18 and the cart 13 running on the guides.
  • the cart has a pinion 23 engaging with a rack 21 on the feed beam to drive the cart along the guides.
  • the lance holder 19 is fastened by hinges 25 at its rear end and the lance 14 with its nozzle 22 is pivotally fastened to this holder 19 by a turnable bracket 24 on a rotary axle 26 so that the lance can be given an angle of attack in both directions.
  • the angle of attack is advisedly adjusted with a hydraulic cylinder or the like, not shown.
  • the lance holder 19 with the lance has a bracket 27 with an oval hole 28 in which an eccentric 29 rotates so that the lance holder will oscillate about its hinge pivot and thus oscillate the lance in a plane transverse to the feed beam.
  • FIG 4 is a principal diagram showing the arrangements for the cart's 13 movement along the feed beam 12 and the lance's 14 oscillation in a plane transverse to the feed direction. The option of adjusting the angle of attack is not shown in this diagram.
  • the eccentric 29 is mounted on an axle 30 of the motor 20 and oscillates the lance 14, in this case shown in principle via a link 32 corresponding to the bracket 27 with the oval hole 28.
  • the motor's axle 30 has a worm screw 33 engaging with a worm gear 34 and the axle 35 of this worm gear has the pinion 23 engaging with the feed beam's rack 21. The motor thus drives the feed movement via a worm transmission 33,34.
  • the motor drives the cart along the feed beam and the oscillation of the lance in a fixed ratio.
  • the oscillation will thus follow a particular sine curve along the surface being worked, regardless of the speed of the cart 13 along the feed beam.
  • By changing the rate of feed one can change the working depth, since a lower speed gives a greater working depth. Since the speed of oscillation is changed at the same time, one always gets an even working of the surface regardless of the working depth.
  • By replacing the eccentric or otherwise changing the eccentric's spacing one can change the working width. The wavelength remains the same, but the working depth decreases at the same time as the working width increases.
  • the machine of the invention is described as built on a carrier in the form of a vehicle which steps forward between cutting sweeps and is used to cut off the surface layer of concrete, e.g., of a bridge roadway.
  • the invention can be used in other ways, such as a feed beam of the described kind can be mounted on a carrier which can be in the form of a scaffold on a concrete column to work the surface of the concrete column and step forward along the scaffold.
  • the invention can also be used for lighter treatment, e.g. for removing plaster or paint on the body of a building.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Road Repair (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

A machine for working of a surface, such as the removing of a damaged concrete layer, with a high-pressure water jet, comprises a carrier, such as a vehicle (11), that has a crosswise feed beam (12) carrying a cart (13) which in turn carries a lance (14) with a water nozzle (22) which is adjustable to give an angle of attack in the direction of movement of the cart and at the same time can oscillate in a plane transverse to the feed beam. When one adjusts the cutting depth by setting the speed along the feed beam, one always obtains an evenly cut surface in that the speed of the cart and the frequency of oscillation are coupled in a fixed ratio.

Description

Machine and method for treating a surface
Field of the invention
The invention pertains to a method of working a surface, for example the removing of a damaged concrete layer with a high-pressure water jet, wherein one uses a carrier, for example a vehicle, having a crosswise feed beam carrying a cart which in turn carries a water nozzle which is adjustable to give an angle of attack in the direction of movement of the cart and at the same time can oscillate in a plane transverse to the feed beam.
Prior art
According to US 6,877,930 B2 and WO 02/081823, for example, machines of this kind are known. One makes a cutting sweep in one direction and then turns the lance carrying the water nozzle to give an angle of attack in the other direction and makes a return cutting sweep. During the cutting sweeps, the lance oscillates in a plane transverse to the sweep directions to yield a larger working width. Between each cutting sweep or several sweeps, the machine steps forward to achieve a cohesive cutting of equal depth. Such machines are used, e.g., for cutting off the outer layer of concrete on a bridge roadway before pouring a new outer layer. In this way, one exposes the uppermost layer reinforcement, so that fresh concrete is then poured in when pouring the new outer layer.
Purpose and brief description of the invention
One purpose of the invention is to allow an easy adjustment of the working depth with no risk of uneven working. This is done according to the invention in that the speed and oscillating frequency of the cart are related by a fixed ratio. By setting the speed of the cart, one sets the desired working depth and obtains an evenly worked surface. Advantageously, there is a mechanical coupling between the oscillation and the rate of feed. The invention is defined by the patent claims.
Brief description of the drawings
Figure 1 shows a track-borne machine according to the invention.
Figure 2 shows in perspective view a feed beam from Fig. 1.
RECORD COPY-TRANSLATION (Rule 12,4) Figure 3 is a partial sectional view looking along arrows 3-3 in Fig. 2 of a cart shown in Fig.
2.
Figure 4 is a sketch showing the principle of operation of the cart in Fig. 2 and 3 and the oscillation of a water ejecting lance, also shown in Fig. 2 and 3.
Description of depicted example of the invention.
Figure 1 shows a tracked vehicle 11 carrying a feed beam 12 on which a cart 13 runs, carrying a water ejecting lance 14, having a nozzle at its end end and extending through a slot 15 in a protecting shield 16. The back end of the water ejecting lance is connected by high- pressure hose to an assembly with a motor-driven high-pressure water pump. This pump assembly can be mounted in a container placed at a distance from the vehicle 11.
Figure 2 shows the feed beam 12. The cart 13 runs on two guides 17,18 and the water ejecting lance 14 is secured to a holder 19 on the cart. The cart is driven by a motor 20 along a rack 21 on the feed beam 12 and the water ejecting lance 14 with its nozzle 22 is fastened to the cover of the cart.
Figure 3 shows the feed beam 12 with its two tubelike guides 17,18 and the cart 13 running on the guides. The cart has a pinion 23 engaging with a rack 21 on the feed beam to drive the cart along the guides. The lance holder 19 is fastened by hinges 25 at its rear end and the lance 14 with its nozzle 22 is pivotally fastened to this holder 19 by a turnable bracket 24 on a rotary axle 26 so that the lance can be given an angle of attack in both directions. The angle of attack is advisedly adjusted with a hydraulic cylinder or the like, not shown. The lance holder 19 with the lance has a bracket 27 with an oval hole 28 in which an eccentric 29 rotates so that the lance holder will oscillate about its hinge pivot and thus oscillate the lance in a plane transverse to the feed beam.
Figure 4 is a principal diagram showing the arrangements for the cart's 13 movement along the feed beam 12 and the lance's 14 oscillation in a plane transverse to the feed direction. The option of adjusting the angle of attack is not shown in this diagram. The eccentric 29 is mounted on an axle 30 of the motor 20 and oscillates the lance 14, in this case shown in principle via a link 32 corresponding to the bracket 27 with the oval hole 28. The motor's axle 30 has a worm screw 33 engaging with a worm gear 34 and the axle 35 of this worm gear has the pinion 23 engaging with the feed beam's rack 21. The motor thus drives the feed movement via a worm transmission 33,34.
The motor drives the cart along the feed beam and the oscillation of the lance in a fixed ratio. The oscillation will thus follow a particular sine curve along the surface being worked, regardless of the speed of the cart 13 along the feed beam. By changing the rate of feed, one can change the working depth, since a lower speed gives a greater working depth. Since the speed of oscillation is changed at the same time, one always gets an even working of the surface regardless of the working depth. By replacing the eccentric or otherwise changing the eccentric's spacing, one can change the working width. The wavelength remains the same, but the working depth decreases at the same time as the working width increases.
The machine of the invention is described as built on a carrier in the form of a vehicle which steps forward between cutting sweeps and is used to cut off the surface layer of concrete, e.g., of a bridge roadway. The invention can be used in other ways, such as a feed beam of the described kind can be mounted on a carrier which can be in the form of a scaffold on a concrete column to work the surface of the concrete column and step forward along the scaffold. The invention can also be used for lighter treatment, e.g. for removing plaster or paint on the body of a building.

Claims

Patent claims
1. Machine for the working of a surface, for example the removing of a damaged concrete layer, with a high-pressure water jet, comprising a carrier (11), for example a vehicle, which has a crosswise feed beam (12) carrying a cart (13) which in turn carries a water ejecting nozzle (22) which is adjustable to give an angle of attack in the direction of movement of the cart and at the same time can oscillate in a plane transverse to the feed beam, characterised by means (28,29) to couple the frequency of oscillation of the water ejecting nozzle (22) in a fixed ratio to the speed of the cart (13).
2. Machine according to claim 1, characterised by a common motor (31) for the oscillation and the propulsion of the cart.
3. Machine according to claim 2, characterised in that the motor (31) drives a worm transmission (33,34) coupled to a pinion engaging with a rack (21) on the feed beam (12) for the driving of the cart (13).
4. Machine according to claim 2 or 3, characterised in that the water ejecting nozzle (22) is mounted on a hinged carrier (19) oscillated by an eccentric (29).
5. Machine according to claim 4, characterised in that the worm transmission's worm screw (33) driven by the motor (31) has an extension carrying the eccentric (29).
6. Machine according one of the preceding claims, characterised in that the water ejecting nozzle (22) is mounted on one end of a lance (14) whose other end is connected to a high-pressure water hose. Method of working a surface, for example the removing of a damaged concrete layer, with a high-pressure water jet, wherein one uses a carrier (11), for example a vehicle, having a crosswise feed beam (12) carrying a cart (13) which in turn carries a water nozzle (22) which is adjustable to give an angle of attack in the direction of movement of the cart and at the same time can oscillate in a plane transverse to the feed beam, characterised in that one holds the speed of the cart (13) and the oscillating frequency of the water nozzle (22) in a fixed ratio regardless of the speed of the cart.
PCT/SE2009/050731 2008-06-16 2009-06-12 Machine and method for treating a surface Ceased WO2009154551A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09766941.0A EP2318591B1 (en) 2008-06-16 2009-06-12 Machine and method for treating a surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0801398-9 2008-06-16
SE0801398A SE531777C2 (en) 2008-06-16 2008-06-16 Machine for machining a surface

Publications (1)

Publication Number Publication Date
WO2009154551A1 true WO2009154551A1 (en) 2009-12-23

Family

ID=40908890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/050731 Ceased WO2009154551A1 (en) 2008-06-16 2009-06-12 Machine and method for treating a surface

Country Status (3)

Country Link
EP (1) EP2318591B1 (en)
SE (1) SE531777C2 (en)
WO (1) WO2009154551A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828465A (en) * 2012-08-27 2012-12-19 合肥通用机械研究院 Process and complete equipment for crushing road and bridge pavement by high-pressure reciprocating abrasive jet
WO2017151030A1 (en) * 2016-02-29 2017-09-08 Conjet Ab Water jet unit and method for working a surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019111162A1 (en) * 2019-04-30 2020-11-05 Falch Gmbh Device for processing a surface by blasting an aqueous liquid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081200A (en) * 1976-12-10 1978-03-28 Flow Industries, Inc. Method and apparatus to remove structural concrete
WO1997000358A1 (en) * 1995-06-19 1997-01-03 Trimatic International As Device for cleaning of road posts
WO1998015690A1 (en) * 1996-10-08 1998-04-16 Aquajet Systems Holding Ab A device and a method for moving an object
WO2002031265A1 (en) * 2000-10-13 2002-04-18 Conjet Ab A method of working a concrete surface
WO2002081823A1 (en) 2001-04-09 2002-10-17 Conjet Ab A method and a machine for working a concrete surface

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8329786D0 (en) * 1983-11-08 1983-12-14 Aqua Dyne Europ Ltd Treating road surfaces &c

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081200A (en) * 1976-12-10 1978-03-28 Flow Industries, Inc. Method and apparatus to remove structural concrete
WO1997000358A1 (en) * 1995-06-19 1997-01-03 Trimatic International As Device for cleaning of road posts
WO1998015690A1 (en) * 1996-10-08 1998-04-16 Aquajet Systems Holding Ab A device and a method for moving an object
WO2002031265A1 (en) * 2000-10-13 2002-04-18 Conjet Ab A method of working a concrete surface
US6877930B2 (en) 2000-10-13 2005-04-12 Conjet Ab Method of working a concrete surface
WO2002081823A1 (en) 2001-04-09 2002-10-17 Conjet Ab A method and a machine for working a concrete surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2318591A4

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828465A (en) * 2012-08-27 2012-12-19 合肥通用机械研究院 Process and complete equipment for crushing road and bridge pavement by high-pressure reciprocating abrasive jet
WO2017151030A1 (en) * 2016-02-29 2017-09-08 Conjet Ab Water jet unit and method for working a surface
US10570575B2 (en) 2016-02-29 2020-02-25 Conjet Ab Water jet unit and method for working a surface

Also Published As

Publication number Publication date
SE0801398L (en) 2009-08-04
EP2318591A4 (en) 2014-05-21
EP2318591B1 (en) 2015-10-21
SE531777C2 (en) 2009-08-04
EP2318591A1 (en) 2011-05-11

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