EP0110002A1 - Hydropneumatisches Asphaltschneidgerät - Google Patents

Hydropneumatisches Asphaltschneidgerät Download PDF

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Publication number
EP0110002A1
EP0110002A1 EP82830293A EP82830293A EP0110002A1 EP 0110002 A1 EP0110002 A1 EP 0110002A1 EP 82830293 A EP82830293 A EP 82830293A EP 82830293 A EP82830293 A EP 82830293A EP 0110002 A1 EP0110002 A1 EP 0110002A1
Authority
EP
European Patent Office
Prior art keywords
valve
hammer
cylinder
piston
pressure
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.)
Granted
Application number
EP82830293A
Other languages
English (en)
French (fr)
Other versions
EP0110002B1 (de
Inventor
Gastone Biffoli
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
Application filed by Individual filed Critical Individual
Priority to DE8282830293T priority Critical patent/DE3276381D1/de
Priority to AT82830293T priority patent/ATE27322T1/de
Priority to EP82830293A priority patent/EP0110002B1/de
Publication of EP0110002A1 publication Critical patent/EP0110002A1/de
Application granted granted Critical
Publication of EP0110002B1 publication Critical patent/EP0110002B1/de
Expired 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
    • E01C23/0926—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 with power-driven tools, e.g. vibrated, percussive cutters

Definitions

  • the invention concerns an asphalt cutting pneumatic hammer holder powered hydropneumatically, based on the increased pressure achieved by pairing joined coaxial pistons of different surfaces.
  • the asphalt cutting machines were and realized to replace the tiring operation of manually cutting the asphalt covering on roads and the like, for the construction of cuttings, for laying electrical and telephone cables, and gas installations, previously done with pneumatic hammers equipped with spade tools, designed for digging.
  • Said machines of known type may be subdivided according to the type of power and feed in:
  • pneumatic hammer bearing piston is simple in effect, that is it can only extract and not push the hammer. Said pneumatic hammer thus operates only by falling, with no possibility of regulating the advancement.
  • the aim of this invention is to eliminate all the inconveniences of the machines described.
  • the figures show in detail the wheeled carriage 1 bearing pneumatic hammer 2, with spade tool 3, powered by means of hydraulic tubes 4 and 5 from the pressure multiplier, consisting of cylinder 6 with pneumatically powered piston 7, coaxial and joined via hsaft 10 with hydraulic piston 8, sliding in overlaying cylinder 9 so that the force developed by inlet of air in cylinder 6 is transferred via shaft 10 to piston 8, smaller in surface than piston 7, and causes a considerable increase in the pressure exerted by piston 8 itself, which pumps the oil in its separate circuit, alternatively, by means of tubes 4 and 5, inside and outside cylinder 11, joined to hammer 2, which is in this way lowered and raised, while the base of shaft 13 and piston 14 remain joined to carriage 1.
  • the hammer can operate behind carriage 1 as shown in dotted lines in figure 2 or may be shifted 90 , as shown by the arrow, to operate next to it for sidewalks and the like.
  • valve 15 which, via timer 16, which supplies the delay necessary to block the wheel in the position of maximum elevation of cam A, switches over valve 17 to brake the wheel by means of cylinder 18. Then when the slide of hammer 2 returns to the top position, it pushes against stroke stop 19 which, by means of timer 20, repositions valve 17 to unlock brake 18.
  • valve 21 to switch over valve 23, which inverts the feed to cylinder 6 of lwo penumatic pressure, of the pressure multiplier; the oil then flows from cylinder 9, of high hydraulic pressure, through flow regulator 25, into the rear side of cylinder 11 to which hammer 2 is joined, thus causing the latter to begin to descend; at this point by pressing valve 22, valve 24 is operated to send air to hammer 2 and that is, to begin to place it in operation; once the cut is effected by the spade 3 of hammer 2, this automatically with its movement, presses stroke stop valve 26, which repositions valves 21 and 22 and, therefore, valve 21 takes air from hammer 2, closing valve 24, and valve 22 incerts 23, bringing the hammer back to its initial position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Road Repair (AREA)
  • Road Paving Machines (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP82830293A 1982-12-01 1982-12-01 Hydropneumatisches Asphaltschneidgerät Expired EP0110002B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8282830293T DE3276381D1 (en) 1982-12-01 1982-12-01 Hydropneumatic asphalt cutting machine
AT82830293T ATE27322T1 (de) 1982-12-01 1982-12-01 Hydropneumatisches asphaltschneidgeraet.
EP82830293A EP0110002B1 (de) 1982-12-01 1982-12-01 Hydropneumatisches Asphaltschneidgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82830293A EP0110002B1 (de) 1982-12-01 1982-12-01 Hydropneumatisches Asphaltschneidgerät

Publications (2)

Publication Number Publication Date
EP0110002A1 true EP0110002A1 (de) 1984-06-13
EP0110002B1 EP0110002B1 (de) 1987-05-20

Family

ID=8190141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830293A Expired EP0110002B1 (de) 1982-12-01 1982-12-01 Hydropneumatisches Asphaltschneidgerät

Country Status (3)

Country Link
EP (1) EP0110002B1 (de)
AT (1) ATE27322T1 (de)
DE (1) DE3276381D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007128582A1 (de) * 2006-05-10 2007-11-15 Edilon Sedra Gmbh Schneid- und stanzmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049097A (en) * 1959-09-29 1962-08-14 Kershaw John Knox Hydraulic pneumatic driving tool
GB1124649A (en) * 1965-12-09 1968-08-21 Albert George Bodine Method and apparatus for cutting into a surface layer, for example, paving
US3552501A (en) * 1969-06-30 1971-01-05 John B Weiss Device for breaking pavement and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049097A (en) * 1959-09-29 1962-08-14 Kershaw John Knox Hydraulic pneumatic driving tool
GB1124649A (en) * 1965-12-09 1968-08-21 Albert George Bodine Method and apparatus for cutting into a surface layer, for example, paving
US3552501A (en) * 1969-06-30 1971-01-05 John B Weiss Device for breaking pavement and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007128582A1 (de) * 2006-05-10 2007-11-15 Edilon Sedra Gmbh Schneid- und stanzmaschine

Also Published As

Publication number Publication date
EP0110002B1 (de) 1987-05-20
ATE27322T1 (de) 1987-06-15
DE3276381D1 (en) 1987-06-25

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