EP0695602A1 - Hydraulically operated hammer with spraying arrangement for dust retention - Google Patents

Hydraulically operated hammer with spraying arrangement for dust retention Download PDF

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Publication number
EP0695602A1
EP0695602A1 EP95110044A EP95110044A EP0695602A1 EP 0695602 A1 EP0695602 A1 EP 0695602A1 EP 95110044 A EP95110044 A EP 95110044A EP 95110044 A EP95110044 A EP 95110044A EP 0695602 A1 EP0695602 A1 EP 0695602A1
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EP
European Patent Office
Prior art keywords
hammer
hydraulic hammer
housing
arrangement
plate
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
EP95110044A
Other languages
German (de)
French (fr)
Other versions
EP0695602B1 (en
Inventor
Heinz-Jürgen Dr.-Ing. Prokop
Heribert Vielhaber
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.)
Construction Tools GmbH
Original Assignee
Krupp Maschinentechnik GmbH
Krupp Bautechnik GmbH
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 Krupp Maschinentechnik GmbH, Krupp Bautechnik GmbH filed Critical Krupp Maschinentechnik GmbH
Publication of EP0695602A1 publication Critical patent/EP0695602A1/en
Application granted granted Critical
Publication of EP0695602B1 publication Critical patent/EP0695602B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/20—Devices for cleaning or cooling tool or work
    • B25D17/22—Devices for cleaning or cooling tool or work using pressure fluid
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/22—Equipment for preventing the formation of, or for removal of, dust

Definitions

  • the invention relates to a hydraulic hammer with a nozzle arrangement and possibly a housing surrounding the hammer.
  • the hydraulic hammer is surrounded in the longitudinal direction with a jacket-shaped impact protection housing, on the front end of which an annular spray arrangement with several spray nozzles is fastened.
  • the ring-shaped nozzle arrangement is arranged on the end face of the hydraulic hammer concentrically with the chisel holder.
  • the nozzle arrangements are attached to the end of the hydraulic hammer or to the housing surrounding it.
  • the relatively short distance to the impact point of the chisel has one Series of disadvantages.
  • the spray cone generated by the nozzle arrangement as a whole only covers a certain area on the surface of the rock to be destroyed. Particles with high kinetic energy released by the impact energy of the hammer penetrate the spray cone to the outside and thus escape dust binding. Irrespective of this, such particles also hit the relatively close nozzle system and lead to blockages and damage there.
  • the replacement of a hydraulic hammer with a spraying arrangement that is no longer working properly leads to an interruption in operation.
  • the present invention has for its object to avoid the disadvantages mentioned, but at least to reduce them significantly and - expressed positively - to increase the operational safety of a hydraulic hammer with water spraying and to reduce the working conditions, e.g. B. by reducing dust.
  • the "base area” of the also increases by moving it back Spray cone and the cone volume.
  • the larger base area detects more particles that tend to form dust and, on the other hand, more particles remain within the (larger) spray cone. The proportion of particles bound by water spraying is thus increased and the dust formation is reduced accordingly.
  • the spray arrangement in a preferred embodiment is placed at the rear end of the hydraulic hammer or the housing, if any, surrounding it.
  • the spraying arrangement is arranged to be displaceable along the side walls of the hydraulic hammer or the housing that may surround it in the direction of the main axis of the hydraulic hammer.
  • a hydraulic hammer 1 is surrounded on all sides by a sound insulation box 2.
  • a pointed chisel 3 is inserted at the front end of the hydraulic hammer 1.
  • the hammer 1 with the sound insulation box 2 is fastened to a holding arrangement via a plate 4.
  • the bracket 5 in turn serves to fasten the hydraulic hammer to a carrier vehicle (not shown).
  • the plate 4 has on its rear side facing away from the hammer 1 a central water connection 6 on, from which radially emerging through holes 7 which are closed at the end and branch holes 8 branching therefrom lead to spray nozzles 9 arranged along the circumference of the plate 4.
  • the plate 4 forms a spray arrangement 10 together with the spray nozzles 9.
  • the dashed lines 11 represent the surface lines of the spray cone 12 generated by a single spray nozzle 9.
  • the dashed lines 13 represent the outer surface lines of the spray cone 14 generated overall by all spray nozzles 9.
  • strips 15 with holes 16 are attached to the outer surfaces of the sound insulation box 2 'enclosing the hydraulic hammer 1' parallel to the main longitudinal direction.
  • the nozzle arrangement 10 ' is adapted to the outer contour of the sound insulation box 2', U-shaped. It has a recess 17 for each bar 15.
  • angle brackets 18 With holes 19. If the holes 19 are congruent with the holes 16 of the strips 15, the nozzle arrangement 10 'z. B. are fastened with bolts 20.
  • the nozzle arrangement 10 ' has a central water connection 6' at one corner, from which channels or bores 21, 22, 23 lead to the various spray nozzles 9.
  • the size of the base area 24 covered by the entire spray cone 14 can be changed by moving the spraying arrangement 10 'along the sound insulation box 2'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Nozzles (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Earth Drilling (AREA)

Abstract

The hammer consists of a housing (1) which is mounted on a support plate (4) to which brackets (5) are also attached with which the hammer can be attached to e.g. a support vehicle. The plate (4) incorporates inlet for the water supply which leads to a central bore from which channels lead to water outlet openings with nozzles. Alternatively a V-shaped plate (10), with water supply and nozzles can be mounted on the plate (4). The plate (4 or 10) with spray nozzles are set back from the ram (3) of the hammer.

Description

Die Erfindung betrifft einen Hydraulikhammer mit einer Bedüsungsanordnung und ggf. einem den Hammer umgebenden Gehäuse.The invention relates to a hydraulic hammer with a nozzle arrangement and possibly a housing surrounding the hammer.

Beim Einsatz von Hydraulikhämmern unter Tage und beim Tunnelbau wird der beim schlagen von Gestein anfallende Staub durch eine Wasserbedüsung gebunden.When using hydraulic hammers underground and when building tunnels, the dust generated when hitting rock is bound by a water spray.

Bei einer zum Einsatz gelangten fahrbaren Schlagkopfmaschine ist der Hydraulikhammer in Längsrichtung mit einem mantelförmigen Schlagschutzgehäuse umgeben, an dessen vorderem Stirnende eine ringförmig ausgebildete Bedüsungsanordnung mit mehreren Spritzdüsen befestigt ist.In the case of a mobile impact head machine that has been used, the hydraulic hammer is surrounded in the longitudinal direction with a jacket-shaped impact protection housing, on the front end of which an annular spray arrangement with several spray nozzles is fastened.

Bei einer anderen bekannten Ausführung ist die kreisringförmig ausgebildete Bedüsungsanordnung an der Stirnseite des Hydraulikhammers konzentrisch zur Meißelaufnahme angeordnet.In another known embodiment, the ring-shaped nozzle arrangement is arranged on the end face of the hydraulic hammer concentrically with the chisel holder.

In beiden Fällen sind die Düsenanordnungen stirnseitig am Hydraulikhammer bzw. an dem diesen umgebenden Gehäuse angebracht. Der relativ geringe Abstand zum Einwirkungsort des Schlagmeißels hat eine Reihe von Nachteilen zur Folge. So erfaßt der von der Düsenanordnung insgesamt erzeugte Sprühkegel nur eine bestimmte Fläche an der Oberfläche des zu zerstörenden Gesteins. Durch die Schlagenergie des Hammers gelöste Teilchen mit hoher Bewegungsenergie durchdringen den Sprühkegel nach außen und entziehen sich somit der Staubbindung. Unabhängig davon treffen derartige Teilchen auch auf die relativ nahe Düsenanlage und führen dort zu Verstopfungen und Beschädigungen. Der Austausch eines Hydraulikhammers mit nicht mehr einwandfrei arbeitender Bedüsungsanordnung führt aber zur Unterbrechung des Betriebes.In both cases, the nozzle arrangements are attached to the end of the hydraulic hammer or to the housing surrounding it. The relatively short distance to the impact point of the chisel has one Series of disadvantages. The spray cone generated by the nozzle arrangement as a whole only covers a certain area on the surface of the rock to be destroyed. Particles with high kinetic energy released by the impact energy of the hammer penetrate the spray cone to the outside and thus escape dust binding. Irrespective of this, such particles also hit the relatively close nozzle system and lead to blockages and damage there. However, the replacement of a hydraulic hammer with a spraying arrangement that is no longer working properly leads to an interruption in operation.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die genannten Nachteile zu vermeiden, zumindest aber deutlich zu verringern und - positiv ausgedrückt - die Betriebssicherheit eines Hydraulikhammers mit Wasserbedüsung zu erhöhen und die Arbeitsverhältnisse, z. B. durch geringere Staubbildung, zu verbessern.The present invention has for its object to avoid the disadvantages mentioned, but at least to reduce them significantly and - expressed positively - to increase the operational safety of a hydraulic hammer with water spraying and to reduce the working conditions, e.g. B. by reducing dust.

Diese Aufgabe wird dadurch gelöst, daß die Bedüsungsanordnung von der Stirnseite des Hammers bzw. des ihn ggf. umgebenden Gehäuses weg in die rückwärtige Richtung, d. h. der Meißelspitze bzw. der Meißelaufnahme entgegegengesetzten Richtung, versetzt plaziert ist. Durch das "Zurück-Versetzen" ist zwischen dem Einwirkungsort der Meißelspitze und der Bedüsungsanordnung ein größerer Abstand entstanden. Da die Bewegungsenergie eines Teilchens mit der Entfernung abnimmt, ist die Gefahr einer Beschädigung der Düsen der Bedüsungsanordnung gegenüber dem Stand der Technik deutlich gesenkt.This object is achieved in that the nozzle arrangement away from the end face of the hammer or the housing possibly surrounding it in the rearward direction, ie. H. the chisel tip or chisel receptacle is in the opposite direction. Due to the "moving back", a larger distance has arisen between the point of action of the chisel tip and the spraying arrangement. Since the kinetic energy of a particle decreases with distance, the risk of damage to the nozzles of the spray arrangement is significantly reduced compared to the prior art.

Bei gleichem Kegelwinkel vergrößert dich durch das Zurückversetzen außerdem die "Grundfläche" des Sprühkegels und das Kegelvolumen. Es werden somit einerseits durch die größere Grundfläche mehr zu einer Staubbildung neigende Teilchen erfaßt und zum anderen Verbleiben mehr Teilchen innerhalb des (größeren) Sprühkegels. Es wird somit der Anteil der durch Wasserbedüsung gebundenen Teilchen vergrößert und die Staubbildung entsprechend gesenkt.With the same cone angle, the "base area" of the also increases by moving it back Spray cone and the cone volume. Thus, on the one hand, the larger base area detects more particles that tend to form dust and, on the other hand, more particles remain within the (larger) spray cone. The proportion of particles bound by water spraying is thus increased and the dust formation is reduced accordingly.

Um ein möglichst großes Sprühkegelvolumen zu erreichen, ist die Bedüsungsanordnung bei einer bevorzugten Ausführungsform am rückwärtigen Ende des Hydraulikhammers bzw. des diesem ggf. umgebenden Gehäuses plaziert.In order to achieve a spray cone volume that is as large as possible, the spray arrangement in a preferred embodiment is placed at the rear end of the hydraulic hammer or the housing, if any, surrounding it.

Bei einer anderen vorteilhaften Weiterbildung ist die Bedüsungsanordnung entlang der Seitenwände des Hydraulikhammers bzw. des ihn ggf. umgebenden Gehäuses in Richtung der Hauptachse des Hydraulikhammers verschiebbar angeordnet. Dadurch läßt sich das Volumen des von den einzelnen Sprühdüsen erzeugten gesamten Sprühkegels und dessen Grundfläche variieren und den jeweiligen Betriebsverhältnissen entsprechend anpassen.In another advantageous development, the spraying arrangement is arranged to be displaceable along the side walls of the hydraulic hammer or the housing that may surround it in the direction of the main axis of the hydraulic hammer. As a result, the volume of the entire spray cone produced by the individual spray nozzles and its base area can be varied and adapted accordingly to the respective operating conditions.

Um schließlich die Belästigung des Bedienungspersonals auch akustisch möglichst klein zu halten, wird nach einer weiteren Weiterbildung der Erfindung vorgeschlagen, das den Hydraulikhammer ggf. umgebende Gehäuse als geschlossene Schalldämmbox auszubilden.In order finally to keep the annoyance of the operating personnel as small as possible acoustically, it is proposed according to a further development of the invention to design the housing that may surround the hydraulic hammer as a closed soundproofing box.

Ausführungsbeispiele des Gegenstandes der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen

Fig. 1
einen Hydraulikhammer mit Schalldämmbox und hinten angeordneter Bedüsungsanordnung,
Fig. 2
die Halteplatte des Hydraulikhammers gemäß Fig. 1 mit der Bedüsungsanordnung in einer rückwärtigen Stirnansicht,
Fig. 3
die Haltevorrichtung in einem auszugsweisen Längsschnitt längs der Linie III-III in Fig. 2,
Fig. 4
einen in eine Schalldämmbox eingeschlossenen Hydraulikhammer mit in Hauptlängsrichtung verschiebbar geführter Bedüsungsanordnung und
Fig. 5
die Bedüsungsanordnung in einer Stirnansicht.
Embodiments of the subject of the invention are shown in the drawing and are explained in more detail below. Show it
Fig. 1
a hydraulic hammer with soundproofing box and rear nozzle arrangement,
Fig. 2
1 with the nozzle arrangement in a rear end view,
Fig. 3
the holding device in a partial longitudinal section along the line III-III in Fig. 2,
Fig. 4
a hydraulic hammer enclosed in a soundproofing box with a spray arrangement guided in the main longitudinal direction and
Fig. 5
the nozzle arrangement in a front view.

Ein Hydraulikhammer 1 ist von einer Schalldämmbox 2 allseitig umgeben. Am vorderen Ende des Hydaulikhammers 1 ist ein Spitzmeißel 3 eingesteckt. Am rückwärtigen, dem Meißel 3 entgegengesetzten Ende ist der Hammer 1 mit der Schalldämmbox 2 über eine Platte 4 an einer Halteanordnung befestigt. Die Halterung 5 dient wiederum zur Befestigung des Hydraulikhammers an einem (nicht dargestellten) Trägerfahrzeug.A hydraulic hammer 1 is surrounded on all sides by a sound insulation box 2. A pointed chisel 3 is inserted at the front end of the hydraulic hammer 1. At the rear end, opposite the chisel 3, the hammer 1 with the sound insulation box 2 is fastened to a holding arrangement via a plate 4. The bracket 5 in turn serves to fasten the hydraulic hammer to a carrier vehicle (not shown).

Die Platte 4 weist an ihrer rückwärtigen, dem Hammer 1 abgewandten Seite einen zentralen Wasseranschluß 6 auf, von dem aus strahlenförmig ausgehende, am Ende verschlossene Durchgangsbohrungen 7 und von diesen abzweigende Sackbohrungen 8 zu entlang dem Umfang der Platte 4 angeordneten Sprühdüsen 9 führen. Die Platte 4 bildet zusammen mit den Sprühdüsen 9 eine Bedüsungsanordnung 10.The plate 4 has on its rear side facing away from the hammer 1 a central water connection 6 on, from which radially emerging through holes 7 which are closed at the end and branch holes 8 branching therefrom lead to spray nozzles 9 arranged along the circumference of the plate 4. The plate 4 forms a spray arrangement 10 together with the spray nozzles 9.

In Fig. 3 stellen die gestrichelten Linien 11 die Mantellinien des von einer einzelnen Sprühdüse 9 erzeugten Sprühkegels 12 dar. In Fig. 1 stellen die gestrichelten Linien 13 die äußeren Mantellinien des von allen Sprühdüsen 9 insgesamt erzeugten Sprühkegels 14 dar.In FIG. 3, the dashed lines 11 represent the surface lines of the spray cone 12 generated by a single spray nozzle 9. In FIG. 1, the dashed lines 13 represent the outer surface lines of the spray cone 14 generated overall by all spray nozzles 9.

Bei dem Ausführungsbeispiel gemäß den Fig. 4 und 5 sind an den Außenflächen der den Hydraulikhammer 1' einschließenden Schalldämmbox 2' parallel zur Hauptlängsrichtung Leisten 15 mit Löchern 16 angebracht. Die Bedüsungsanordnung 10' ist, der Außenkontur der Schalldämmbox 2' angepaßt, U-förmig ausgebildet. Sie weist für jede Leiste 15 eine Ausnehmung 17 auf. Zur Befestigung der Bedüsungsanordnung 10' ist diese mit Winkellaschen 18 mit Löchern 19 versehen. Wenn die Löcher 19 mit den Löchern 16 der Leisten 15 deckungsgleich sind, kann die Bedüsungsanordnung 10' z. B. mit Bolzen 20 befestigt werden.In the exemplary embodiment according to FIGS. 4 and 5, strips 15 with holes 16 are attached to the outer surfaces of the sound insulation box 2 'enclosing the hydraulic hammer 1' parallel to the main longitudinal direction. The nozzle arrangement 10 'is adapted to the outer contour of the sound insulation box 2', U-shaped. It has a recess 17 for each bar 15. To fasten the nozzle arrangement 10 ', it is provided with angle brackets 18 with holes 19. If the holes 19 are congruent with the holes 16 of the strips 15, the nozzle arrangement 10 'z. B. are fastened with bolts 20.

Die Bedüsungsanordnung 10' weist an einer Ecke einen zentralen Wasseranschluß 6' auf, von dem Kanäle oder Bohrungen 21, 22, 23 zu den verschiedenen Sprühdüsen 9 führen. Wie aus Fig. 4 ohne weiteres ersichtlich ist, kann die von dem gesamten Sprühkegel 14 erfaßte Grundfläche 24 durch Verschieben der Bedüsungsanordnung 10' entlang der Schalldämmbox 2' in ihrer Größe verändert werden.The nozzle arrangement 10 'has a central water connection 6' at one corner, from which channels or bores 21, 22, 23 lead to the various spray nozzles 9. As is readily apparent from FIG. 4, the size of the base area 24 covered by the entire spray cone 14 can be changed by moving the spraying arrangement 10 'along the sound insulation box 2'.

Claims (4)

Hydraulikhammer (1) mit einer Bedüsungsanordnung (10; 10') und ggf. einem den Hammer umgebenden Gehäuse (2; 2'), dadurch gekennzeichnet, daß die Bedüsungsanordnung (10, 10') von der Stirnseite des Hammers (1) bzw. des ihn ggf. umgebenden Gehäuses (2, 2') weg in die rückwärtige Richtung versetzt plaziert ist.Hydraulic hammer (1) with a nozzle arrangement (10; 10 ') and possibly a housing (2; 2') surrounding the hammer, characterized in that the nozzle arrangement (10, 10 ') from the end face of the hammer (1) or of the housing (2, 2 ') which may surround it is placed offset in the rearward direction. Hydraulikhammer nach Anspruch 1, dadurch gekennzeichnet, daß die Bedüsungsanordnung (10) am rückwärtigen Ende des Hydraulikhammers (1) bzw. des diesen ggf. umgebenden Gehäuses (2) plaziert ist.Hydraulic hammer according to claim 1, characterized in that the nozzle arrangement (10) is placed at the rear end of the hydraulic hammer (1) or the housing (2) which may surround it. Hydraulikhammer nach Anspruch 1, dadurch gekennzeichnet, daß die Bedüsungsanordnung (10') entlang der Seitenwände des Hydraulikhammers (1) bzw. des ihn ggf. umgebenden Gehäuses (2') verschiebbar angeordnet ist.Hydraulic hammer according to claim 1, characterized in that the nozzle arrangement (10 ') is arranged to be displaceable along the side walls of the hydraulic hammer (1) or the housing (2') which may surround it. Hydraulikhammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das den Hydraulikhammer (1) ggf. umgebende Gehäuse (2, 2') als geschlossene Schalldämmbox ausgebildet ist.Hydraulic hammer according to one of claims 1 to 3, characterized in that the housing (2, 2 ') possibly surrounding the hydraulic hammer (1) is designed as a closed soundproofing box.
EP95110044A 1994-07-04 1995-06-28 Hydraulically operated hammer with spraying arrangement for dust retention Expired - Lifetime EP0695602B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4423166 1994-07-04
DE4423166A DE4423166A1 (en) 1994-07-04 1994-07-04 Hydraulic hammer with nozzle arrangement for dust binding

Publications (2)

Publication Number Publication Date
EP0695602A1 true EP0695602A1 (en) 1996-02-07
EP0695602B1 EP0695602B1 (en) 2000-02-09

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ID=6522054

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EP95110044A Expired - Lifetime EP0695602B1 (en) 1994-07-04 1995-06-28 Hydraulically operated hammer with spraying arrangement for dust retention

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EP (1) EP0695602B1 (en)
AT (1) ATE189641T1 (en)
DE (2) DE4423166A1 (en)
ES (1) ES2144546T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004110713A1 (en) * 2003-06-18 2004-12-23 Rubens Dalcin Junior Disposition applied in machines for marble work and similars
CN109630111A (en) * 2019-01-24 2019-04-16 滕州市金达煤炭有限责任公司 A kind of coal mining hand-held electric coal drill
US20220161408A1 (en) * 2020-11-23 2022-05-26 Caterpillar Inc. Dust suppression system for hammers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT511284B1 (en) * 2011-03-23 2014-02-15 Sandvik Mining & Constr Oy DEVICE FOR COOLING CHISELS
CN113618117B (en) * 2021-08-25 2023-12-22 山东凯诚绿建集团有限公司 Noise-reducing dust-removing electric drill with debris collecting structure and control method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE484958A (en) *
DE962330C (en) * 1956-01-05 1957-04-18 Hauhinco Maschf Jackhammer with spray nozzle
FR1220882A (en) * 1958-12-29 1960-05-30 Meudon Forges Atel Water spray system for pneumatic jackhammers
EP0147262A1 (en) * 1983-11-10 1985-07-03 CHARBONNAGES DE FRANCE, Etablissement public dit: Sound-attenuating housing for pneumatic drills
DE4020773A1 (en) * 1990-06-29 1992-01-02 Hilti Ag Drilling and chisel hammer - incorporates fluid container, fluid being activated by compressed air or pump for spraying against dust produced
WO1993022106A1 (en) * 1992-04-29 1993-11-11 Atlas Copco Berema Aktiebolag Hydraulic breaking hammer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810606C2 (en) * 1978-03-11 1987-02-05 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Chisel for a breaking tool that works by striking the rock
DE3609754A1 (en) * 1986-03-22 1987-09-24 Gewerk Eisenhuette Westfalia Spraying arrangement for selective-cut heading machines
SU1580034A1 (en) * 1988-02-05 1990-07-23 Московский Горный Институт Method and apparatus for dust suppresion of actuating member of heading machine
DE4030126A1 (en) * 1990-09-24 1992-03-26 Krupp Maschinentechnik SOUND INSULATION DEVICE FOR A HYDRAULICALLY OPERATED DRIVE UNIT WITH A MOVING TOOL REGARDING THIS MOVABLE TOOL

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE484958A (en) *
DE962330C (en) * 1956-01-05 1957-04-18 Hauhinco Maschf Jackhammer with spray nozzle
FR1220882A (en) * 1958-12-29 1960-05-30 Meudon Forges Atel Water spray system for pneumatic jackhammers
EP0147262A1 (en) * 1983-11-10 1985-07-03 CHARBONNAGES DE FRANCE, Etablissement public dit: Sound-attenuating housing for pneumatic drills
DE4020773A1 (en) * 1990-06-29 1992-01-02 Hilti Ag Drilling and chisel hammer - incorporates fluid container, fluid being activated by compressed air or pump for spraying against dust produced
WO1993022106A1 (en) * 1992-04-29 1993-11-11 Atlas Copco Berema Aktiebolag Hydraulic breaking hammer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004110713A1 (en) * 2003-06-18 2004-12-23 Rubens Dalcin Junior Disposition applied in machines for marble work and similars
CN109630111A (en) * 2019-01-24 2019-04-16 滕州市金达煤炭有限责任公司 A kind of coal mining hand-held electric coal drill
US20220161408A1 (en) * 2020-11-23 2022-05-26 Caterpillar Inc. Dust suppression system for hammers
WO2022108869A1 (en) * 2020-11-23 2022-05-27 Caterpillar Inc. Dust suppression system for hammers
US11752612B2 (en) * 2020-11-23 2023-09-12 Caterpillar Inc. Dust suppression system for hammers

Also Published As

Publication number Publication date
DE4423166A1 (en) 1996-01-11
ES2144546T3 (en) 2000-06-16
EP0695602B1 (en) 2000-02-09
ATE189641T1 (en) 2000-02-15
DE59507768D1 (en) 2000-03-16

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