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EP0241895B1 - Dispositif pour nettoyer, fondre et élargir des joints ou des fissures dans des revêtements en asphalte - Google Patents

Dispositif pour nettoyer, fondre et élargir des joints ou des fissures dans des revêtements en asphalte Download PDF

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Publication number
EP0241895B1
EP0241895B1 EP87105451A EP87105451A EP0241895B1 EP 0241895 B1 EP0241895 B1 EP 0241895B1 EP 87105451 A EP87105451 A EP 87105451A EP 87105451 A EP87105451 A EP 87105451A EP 0241895 B1 EP0241895 B1 EP 0241895B1
Authority
EP
European Patent Office
Prior art keywords
housing
outlet
road surface
pipe
gas
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.)
Expired - Lifetime
Application number
EP87105451A
Other languages
German (de)
English (en)
Other versions
EP0241895A2 (fr
EP0241895A3 (en
Inventor
Richard Rupprecht
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19863612685 external-priority patent/DE3612685C1/de
Application filed by Individual filed Critical Individual
Priority to AT87105451T priority Critical patent/ATE56494T1/de
Publication of EP0241895A2 publication Critical patent/EP0241895A2/fr
Publication of EP0241895A3 publication Critical patent/EP0241895A3/de
Application granted granted Critical
Publication of EP0241895B1 publication Critical patent/EP0241895B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01C23/09—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • E01C23/0953—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges by thermal effect, e.g. cutting by melting, cleaning drying or heating with hot jets

Definitions

  • the invention relates to a device for cleaning, melting and widening joints or cracks to be filled with potting compound in road surfaces with a jacket housing mounted on a trolley, which has a tapered outlet opening on the side facing the road surface and a free inlet opening on the side facing away from the road surface.
  • a gas burner with a gas supply line in front of which a gas burner with a gas supply line is arranged and with a tube for compressed air which is guided into the casing and has a rectilinear end with an outlet opening, the hot air jet which flows out of the tapered outlet opening during operation can be directed at an acute angle onto the joint to be repaired .
  • joints cut or milled into a road surface are filled with potting compound.
  • cracks that have arisen due to weather influences, stresses or subsidence must be grouted with permanently elastic potting compound in order to protect the road surface from further damage.
  • the joints or cracks must be free of loose foreign bodies, such as stones, dirt or non-sticking asphalt parts, which are otherwise enclosed by the grout.
  • the filling points must be dry, should not have any sharp edges and preferably have an elevated temperature; Cracks must therefore be widened and rounded so that the required firm connection to the sealing compound is achieved. Otherwise, the potting compound can come out of the crack after just a short use of the road.
  • a device with the features specified in the preamble of claim 1 is known from DE-U 71 39 783.
  • At least one gas burner which can be ignited by hand, is arranged in front of the free air-side opening of the casing housing tapering on the street-ceiling side. Between the burners, the compressed air is led deep into the casing through a straight pipe. Due to the compressed air flowing out of the straight tube, fresh air is sucked in sufficiently at the free opening of the casing and fed to the burners, but here an intimate mixing of the two working gases, compressed air and gas-fresh air mixture, is required so that the compressed air supplied is heated to a sufficient extent; for this reason, the straight compressed air pipe also ends at a corresponding distance in front of the tapered outlet opening of the jacket housing.
  • the invention has for its object to develop a device of the type mentioned in such a way that the efficiency is increased in particular depending on the fuel consumption.
  • the tube is designed as a heat exchanger which passes through the jacket housing with spiral turns in the longitudinal direction, and with its outlet opening is approximately brought up to the tapered outlet opening of the jacket housing, so that separate hot air outlets for the compressed air and the gas-fresh air mixture are provided.
  • the outflowing thin compressed air hot jet also sucks a sufficient amount of the gas-fresh air mixture out of the casing, so it is surrounded all around by a jet of the gas-fresh air mixture with a lower flow rate, which ensures that the two joint edges melt away, so that no primer is required before grouting with potting compound, and nevertheless reliable adhesion is achieved.
  • the windings of the spiral tube expand in the longitudinal direction of the jacket housing. This results in a more intensive flow around the spiral tube with the flames of the gas burner.
  • a protective grille attached in front of the tapered outlet opening of the casing serves as a flame arrester and protects the operator.
  • the device shown in FIGS. 1 and 2 for repairing asphalt road surfaces has a single-axle carriage 1 with two wheels, the is expediently manufactured as a welded pipe construction.
  • a casing 2 On the carriage 1, a casing 2 is fixed.
  • the casing 2 consists of a cylindrical tubular part 3, which is open to the atmosphere at its end 5 facing away from the road surface S and a conical funnel 4 with a tapered outlet opening 6 is welded to the end of the road surface.
  • a protective grille (not shown) can also be attached in front of the outlet opening 6 of the conical funnel 4.
  • the axis of the cylindrical part 3 of the casing 2 is inclined at an acute angle to the road surface in the operating position of the device and the conical funnel 4 reduces this inclination angle with its axis according to FIG.
  • a gas burner 7 (not shown in detail) is arranged in front of the inlet opening 5 of the casing 2, the flame jet of which is directed into the interior of the casing 2.
  • a gaseous fuel usually propane gas, is supplied to the gas burner 7 via a fixed feed line 8 attached to the carriage 1; on the fixed feed line 8, a flexible feed line 9 is connected, which leads to the fuel reservoir, not shown.
  • the heat exchanger In the interior of the casing 2, a heat exchanger through which compressed air flows is arranged in front of the flame jet of the gas burner 7.
  • the heat exchanger consists of a tube spiral 10, the turns of the same diameter of which are located in the tubular part 3 of the jacket housing 2 and extend in the longitudinal direction thereof.
  • the open end 11 of the spiral tube 10 is guided in a straight line through the conical funnel 4 of the casing 2, in such a way that its outlet opening 12 comes close to the tapered outlet opening 6 of the conical funnel 4 of the casing 2.
  • An additional outlet nozzle (not shown) is expediently arranged at the outlet opening 12 from the pipe spiral 10.
  • the outlet opening 12 for the compressed air is thus still somewhat surrounded in the conical funnel 4 by an approximately ring-shaped outlet opening for the gas-fresh air mixture brought about on the burner side, so that separate hot air outlets for the compressed air conducted through the spiral tube 10 and that from the Shell housing 2 sucked gas-fresh air mixture are present.
  • the compressed air is fed to the spiral tube 10 via a fixed supply line 13 attached to the carriage 1, which is connected to a flexible supply line 14 leading to the compressor (not shown).
  • the fixed supply line 13 for the compressed air can also be designed as an operating handle for the device, from which the upper end of the spiral tube 10 is led out at a suitable point.
  • the supply lines 8 and 13 for fuel or compressed air have shut-off valves 15 and 16 at an easily accessible location.
  • the fuel storage container and compressor are located on a truck traveling with them.
  • shut-off valves 15 and 16 are opened and the gas burner 7 is ignited by hand.
  • Compressed air flows through the tube spiral 10 and a strong hot air jet 17 results at its outlet opening 12, the cross section of which corresponds approximately to the tube inner diameter or that of the outlet nozzle from the tube spiral 10.
  • the hot air jet 17 flowing out of the rectilinear end 11 of the spiral tube 10 develops a strong suction effect at the outlet opening 6 from the conical funnel 4, so that the gas-fresh air mixture surrounding it is entrained and fresh air flows in at the open inlet opening 5 to an increased extent, whereby a distinctive flame forms on the gas burner 7, which envelops the turns of the spiral tube 10.
  • the relatively thin hot air jet 17 of the compressed air emerging from the tapered outlet opening 6 at high speed is thus surrounded by a jet 18 of lower flow speed, which consists of the burning working gas and the fresh air drawn in.
  • the central compressed air hot jet 17 of high flow speed is directed by the operator at an acute angle directly into the joint F to be repaired in the road surface S, so penetrates deep into it with an oblique inclination and thus blows it free of all impurities such as stones and dirt , Sand or the like, and due to its high temperature also ensures a melting of the bitumen present in the asphalt surface within the joint F, while the gas-fresh air hot jet 18 surrounding it at a lower flow rate, for a wide melting of the bitumen at the ensures both joint edges. Joints pretreated in this way can be reliably filled with permanently elastic casting compound in an immediately or possibly later subsequent operation.
  • the temperatures and the outflow speeds of the two working gases, hot air jet 17 from compressed air and the jet 18 surrounding them from the gaseous fuel together with the fresh air drawn in can be regulated within certain limits or optimally coordinated with one another by means of the shut-off valves 15 and 16.
  • the device In the event of a brief shutdown of the device, it is sufficient to block the compressed air shut-off valve 16 and to reduce the fuel throughput at the shut-off valve 15 without letting the burner flame go out; the device can then be placed on the road surface S with its operating handle and is still ready for use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Road Repair (AREA)
  • Road Paving Structures (AREA)
  • Working-Up Tar And Pitch (AREA)

Claims (3)

1. Dispositif pour nettoyer, fondre et élargir les joints ou fissures dans les revêtements routiers devant être remplis de coulis au ciment au moyen d'un véhicule équipé d'une enveloppe dotée côté route d'une ouverture de sortie effilée et côté opposé à la route d'une ouverture d'entrée libre devant laquelle est disposé un brûleur à gaz pourvu d'une conduite d'amenée de gaz et d'un tube à air comprimé s'introduisant dans l'enveloppe possédant une extrémité rectiligne avec une ouverture de sortie, le jet d'air chaud sortant de l'ouverture d'entrée effilée lors du fonctionnement pouvant être dirigé en un angle pointu sur le joint à réparer, caractérisé en ce que le tube (10, 11) est conçu en tant qu'échangeur de chaleur dotant l'enveloppe (2) de spires allant en sens longitudinal et dont l'ouverture de sortie (12) arrive environ jusqu'à l'ouverture de sortie effilée (6) de l'enveloppe (2) de sorte que des sorties d'air chaud séparées soient prévues pour l'air comprimé et le mélange de gaz/d'air frais.
2. Dispositif selon la revendication 1, caractérisé en ce que les spires du tube spiralé (10) s'élargissent coniquement dans le sens longitudinal de l'enveloppe (2).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'une grille de protection est disposée devant l'ouverture de sortie effilée (6) de l'enveloppe (2).
EP87105451A 1986-04-15 1987-04-13 Dispositif pour nettoyer, fondre et élargir des joints ou des fissures dans des revêtements en asphalte Expired - Lifetime EP0241895B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105451T ATE56494T1 (de) 1986-04-15 1987-04-13 Vorrichtung zum reinigen, schmelzen und verbreitern von fugen oder rissen in asphaltstrassendecken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3612685 1986-04-15
DE19863612685 DE3612685C1 (en) 1986-02-19 1986-04-15 Device for cleaning, melting and widening joints or cracks in asphalt road pavings

Publications (3)

Publication Number Publication Date
EP0241895A2 EP0241895A2 (fr) 1987-10-21
EP0241895A3 EP0241895A3 (en) 1988-07-20
EP0241895B1 true EP0241895B1 (fr) 1990-09-12

Family

ID=6298725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105451A Expired - Lifetime EP0241895B1 (fr) 1986-04-15 1987-04-13 Dispositif pour nettoyer, fondre et élargir des joints ou des fissures dans des revêtements en asphalte

Country Status (2)

Country Link
EP (1) EP0241895B1 (fr)
AT (1) ATE56494T1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112112038B (zh) * 2020-08-31 2022-05-17 江苏建通绿色工程有限公司 一种内置加热输料装置的预处理式灌缝机
CN114703731B (zh) * 2022-03-30 2024-05-14 东营广通科技有限公司 用于路面裂缝修补的设备
CN115404752B (zh) * 2022-09-19 2024-06-07 临漳县锦程公路养护工程有限公司 一种公路伸缩缝快速密封加固系统及方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7139783U (de) * 1972-01-13 Marks & Co Straßenbaugerät zum Behandeln von Straßendeckenfugen mit einem Heißluftstrom
DE1908200C3 (de) * 1969-02-19 1980-05-22 Chemische Fabrik Biebrich Vorm. Seck & Dr. Alt, Gmbh, 6200 Wiesbaden Vorrichtung zum Trocknen und Heizen von Fugen

Also Published As

Publication number Publication date
ATE56494T1 (de) 1990-09-15
EP0241895A2 (fr) 1987-10-21
EP0241895A3 (en) 1988-07-20

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