EP0407467B1 - Hammer-swinging mechanism - Google Patents

Hammer-swinging mechanism Download PDF

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Publication number
EP0407467B1
EP0407467B1 EP89905578A EP89905578A EP0407467B1 EP 0407467 B1 EP0407467 B1 EP 0407467B1 EP 89905578 A EP89905578 A EP 89905578A EP 89905578 A EP89905578 A EP 89905578A EP 0407467 B1 EP0407467 B1 EP 0407467B1
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EP
European Patent Office
Prior art keywords
hammer
axis
suspension according
bolt
bores
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
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EP89905578A
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German (de)
French (fr)
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EP0407467A1 (en
Inventor
Alois Wimmer
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Individual
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Individual
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3677Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets

Definitions

  • the invention relates to a pivotable suspension of a cutter hammer on an excavator boom or the like which can be bent about a horizontal axis, in which the cutter hammer is pivotally suspended transversely to the buckling plane about an axis lying in the buckling plane of the excavator boom.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Cleaning In General (AREA)

Abstract

PCT No. PCT/AT89/00050 Sec. 371 Date Jan. 26, 1990 Sec. 102(e) Date Jan. 26, 1990 PCT Filed May 18, 1989 PCT Pub. No. WO89/11568 PCT Pub. Date Nov. 30, 1989.Mounting for a swingable suspension of a cutter hammer to a boom or the like which is tiltable about a horizontal axis, with the cutter hammer being floatingly suspended and swingable transversely to the tilting plane about an axis which extends in the tilting plane of the boom, wherein the cutter hammer (2) is locked in the desired swinging position relative to the boom (1) by a form-fitting coupling (6, 7, 8, 9).

Description

Die Erfindung bezieht sich auf eine schwenkbare Aufhängung eines Schrämmhammers an einem um eine horizontale Achse knickbaren Baggerausleger od.dgl., bei welcher der Schrämmhammer um eine in der Knickebene des Baggerauslegers liegende Achse quer zur Knickebene verschwenkbar pendelnd aufgehängt ist.The invention relates to a pivotable suspension of a cutter hammer on an excavator boom or the like which can be bent about a horizontal axis, in which the cutter hammer is pivotally suspended transversely to the buckling plane about an axis lying in the buckling plane of the excavator boom.

Mit herkömmlich am Baggerausleger unverschwenkbar aufgehängten Schrämmhämmern war es nicht möglich, rechteckigen Querschnitt aufweisende Künetten auszuheben, da es aufgrund der Absenkung der Schrämmhämmer in einer vertikalen Ebene nur möglich war, Künetten mit trapezförmigem Querschnitt auszuheben, u.zw. aufgrund der Breite der Schrämmhammereinrichtung, welche das eigentliche Schrämmwerkzeug seitlich deutlich überragt, so daß ein geradliniges bzw. vertikales Abstechen der Grabenwandung nicht möglich ist. Dabei wird gemäß der US-A1-3 889 762 der Schrämmhammer, der am Ausleger in der Knickebene schwenkbar angelenkt ist, mittels einer hydraulischen Kolben-Zylinder-Einheit verschwenkt und in der gewünschten Lage gehalten, in welcher ein Einbringen der Schrämmkräfte in Richtung der Achse des Schrämmwerkzeuges erfolgt.It was not possible to excavate cunettes with a rectangular cross-section using conventionally suspended swiveling hammers on the excavator boom, since, due to the lowering of the cutting hammers in a vertical plane, it was only possible to excavate cunettes with a trapezoidal cross-section, etc. due to the width of the cutting hammer device, which clearly protrudes laterally from the actual cutting tool, so that a straight or vertical parting of the trench wall is not possible. According to US-A1-3 889 762, the cutting hammer, which is pivotably articulated on the boom in the articulated plane, is pivoted by means of a hydraulic piston-cylinder unit and held in the desired position in which the cutting forces are introduced in the direction of the axis of the cutting tool.

Es war daher bei Ausbildungen der eingangs genannten Art z.B. gemäß der FR-PS 2 408 017, bereits vorgesehen, den Schrämmhammer am Baggerausleger quer zur Knickebene des Baggerarmes verschwenkbar zu lagern, wobei bei dieser bekannten Ausbildung die Schrägstellung und Festlegung des Schrämmhammers mittels einer hydraulischen Kolben-Zylinder-Einrichtung vorgenommen wurde. Diese Ausbildungen waren jedoch in der Praxis nicht einsetzbar, weil die hydraulischen Kolben-Zylinder-Einheit, welche die Verschwenkung und Festlegung des Schrämmhammers bewirkte, die Schläge, die der Schrämmhammer auf den Untergrund ausübt, aufnehmen mußte, um ein seitliches Ausweichen des Schrämmhammers zu vermeiden. Diese bekannten Ausbildungen waren somit für den praktischen Einsatz nicht geeignet.It was therefore already provided in designs of the type mentioned at the outset, for example in accordance with FR-PS 2 408 017, for the cutter hammer to be pivotably mounted on the excavator boom transversely to the articulated plane of the excavator arm, with this known design using a hydraulic piston to tilt and fix the cutter hammer -Cylinder setup was made. However, these training courses could not be used in practice because the hydraulic piston-cylinder unit, which caused the swiveling and fixing of the cutter hammer, had to absorb the blows that the cutter hammer exerts on the ground in order to avoid lateral displacement of the Avoiding a hammer. These known designs were therefore not suitable for practical use.

Der Erfindung liegt die Aufgabe zugrunde, eine Aufhängung der eingangs genannten Art so auszubilden, daß sie für den praktischen Einsatz voll tauglich ist.The invention has for its object to design a suspension of the type mentioned so that it is fully suitable for practical use.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß für das Festlegen des Schrämmhammers in der gewünschten Pendelschwenklage bezüglich des Baggerauslegers eine formschlüssige Kupplung vorgesehen ist, von welcher wenigstens ein Teil (9) am Baggerausleger (1) und der oder die verbleibenden Teile (6,7,8) am Schrämmhammer (2) starr angebracht sind. Dadurch werden die enormen Schrämmkräfte durch eine formschlüssige Kupplung aufgenommen, wobei aufgrund der Formschlüssigkeit das Ausschlagen der Kupplung möglichst gering gehalten ist. Derartige erfindungsgemäße Ausbildungen können damit auch zur Aufhängung schwerer Schrämmhämmer eingesetzt werden.According to the invention, this object is achieved in that a positive coupling is provided for fixing the cutter hammer in the desired pendulum pivoting position with respect to the excavator boom, of which at least one part (9) on the excavator boom (1) and the remaining part (6, 7, 8) are rigidly attached to the cutter hammer (2). As a result, the enormous cutting forces are absorbed by a form-fitting coupling, the deflection of the coupling being kept as low as possible due to the form-fitting connection. Such designs according to the invention can thus also be used for suspending heavy rotary hammers.

Vorteilhafterweise kann die formschlüssige Kupplung durch einen Bolzen und diesen aufnehmende, fluchtende Bohrungen gebildet sein. Dadurch wird erreicht, daß die Kupplung hohe Kräfte aufnehmen kann, da die Bolzen in bezug auf die Bohrungen sehr genau ausgelegt werden können. Dabei kann der Bolzen mittels einer hydraulischen Kolben-Zylinder-Einheit in Axialrichtung verschiebbar sein, wodurch ein automatisches Aus- bzw. Einkuppeln der Kupplungseinrichtung ermöglicht ist. Dabei können zur Aufnahme des Bolzens Führungsbohrungen in Ösen an dem die Kolben-Zylinder-Einheit tragenden Teil und die Verriegelungsbohrungen in einer Schwenklasche am anderen Teil angeordnet sein. Dadurch wird eine sichere Festlegung des Schrämmhammers in bezug auf den Baggerausleger erreicht. Dabei können die Verriegelungsbohrungen in der Schwenklasche entlang eines Kreisbogens angeordnet sein, dessen Mittelpunkt auf der Achse der Schwenkachse liegt. Schließlich kann die Schwenklasche zwischen die Ösen hineingreifen, wobei der freie Abstand der Ösen etwa der Dicke der Schwenklasche enspricht. Dadurch wird erzielt, daß der Bolzen nur geringfügig auf Biegung und hauptsächlich auf Abscherung beansprucht wird.Advantageously, the positive coupling can be formed by a bolt and receiving aligned bores. This ensures that the coupling can absorb high forces, since the bolts can be designed very precisely in relation to the bores. The bolt can be displaceable in the axial direction by means of a hydraulic piston-cylinder unit, whereby the clutch device can be automatically disengaged or engaged. In this case, guide bores can be arranged in eyelets on the part carrying the piston-cylinder unit and the locking bores can be arranged in a swivel tab on the other part in order to receive the bolt. This ensures that the cutter is securely attached to the excavator boom. The locking holes can be arranged in the swivel bracket along a circular arc, the center of which lies on the axis of the swivel axis. Finally, the swivel bracket can reach between the eyelets, the free spacing of the eyelets corresponding approximately to the thickness of the swivel bracket. This ensures that the bolt is only slightly stressed on bending and mainly on shear.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungs gegenstandes dargestellt.In the drawing, an embodiment of the subject matter of the invention is shown.

Fig. 1 zeigt schematisch einen Grabenaushub mit einem herkömmlich aufgehängten Schrämmhammer.Fig. 1 shows schematically a trench excavation with a conventionally suspended cutting hammer.

Fig. 2 veranschaulicht schematisch den Grabenaushub mit einem erfindungsgemäß aufgehängten Schrämmhammer.Fig. 2 illustrates schematically the trench excavation with a cutting hammer suspended according to the invention.

Fig. 3 ist eine Detailansicht der Schwenkvorrichtung.Fig. 3 is a detailed view of the swivel device.

Fig. 4 zeigt eine Seitenansicht, in Richtung des Pfeiles P der Fig. 3 gesehen.FIG. 4 shows a side view, seen in the direction of arrow P of FIG. 3.

Am Baggerausleger 1 ist gemäß Fig. 1 der Schrämmhammer 2 in herkömmlicher Weise gelenkig angebracht, so daß bei Knicken des Baggerarmes 1 lediglich die Änderung der Schwenklage des Schrämmhammers in Richtung der Knickbewegung erzielbar ist, nicht jedoch quer zur Knickebene. Wie aus Fig. 1 ersichtlich, ist die Künette im Querschnitt trapezförmig, was ein erhöhtes Aufkommen an abzutransportierendem Material ergibt. Weiters muß dann bei Zuschütten der Künette eine größere Menge an Austauschmaterial wieder rückgeführt werden.1, the cutter hammer 2 is articulated in a conventional manner, so that when the excavator arm 1 is bent, only the change in the pivoting position of the cutter hammer in the direction of the bending movement can be achieved, but not transversely to Kink level. As can be seen from FIG. 1, the cross section of the truss is trapezoidal, which results in an increased amount of material to be removed. Furthermore, a larger amount of replacement material must then be returned when the bezel is filled up.

Gemäß Fig. 2 ist der Schrämmhammer 2 über eine Schwenkeinrichtung 3 mit dem Baggerausleger 1 verbunden, wobei die Schwenkeinrichtung 3 bei vorliegendem Ausführungsbeispiel an einer Schnellwechseleinrichtung 4 vorgesehen ist. Die Schwenkeinrichtung 3 weist eine in Richtung der Knickebene des Baggerauslegers 1 verlaufende Schwenkachse 5 auf, um welche der Schrämmhammer 2 in bezug auf die Knickebene des Baggerauslegers 1 verschwenkbar ist. Zur Festlegung des Schrämmhammers 2 in bezug auf den Baggerausleger 1 ist eine formschlüssige Kupplungseinrichtung vorgesehen, welche aus einem parallel zur Schwenkachse 5 verlaufenden Bolzen 6, zwei ösen 7 und 8 und einer Schwenklasche 9 besteht. In den ösen 7 und 8 sind miteinander fluchtende Führungsbohrungen, und in der Schwenklasche 9 Verriegelungsbohrungen 10 vorgesehen. Der Bolzen 6 ist dabei mittels einer hydraulischen Kolben-Zylinder-Einheit 11 in Axialrichtung verschiebbar.2, the cutting hammer 2 is connected to the excavator boom 1 via a swivel device 3, the swivel device 3 being provided on a quick-change device 4 in the present exemplary embodiment. The swivel device 3 has a swivel axis 5 extending in the direction of the articulation plane of the excavator boom 1, about which the cutter hammer 2 can be swiveled with respect to the articulation plane of the excavator boom 1. To fix the cutter 2 with respect to the excavator boom 1, a form-fitting coupling device is provided, which consists of a bolt 6, two eyes 7 and 8 and a swivel bracket 9, which runs parallel to the swivel axis 5. In the eyelets 7 and 8 are aligned guide holes, and 9 locking holes 10 are provided in the swivel tab. The bolt 6 is displaceable in the axial direction by means of a hydraulic piston-cylinder unit 11.

Wie aus Fig. 3 ersichtlich, sind die Verriegelungsbohrungen 10 entlang eines Kreisbogens angeordnet, dessen Mittelpunkt in der Längsachse der Schwenkachse 5 liegt. Bei vorliegendem Ausführungsbeispiel ist die mittlere Verriegelungsbohrung so angeordnet, daß der Schrämmhammer 2 in bezug auf die Schnellwechselvorrichtung 4 senkrecht steht. Die übrigen Verriegelungsbohrungen sind gegenüber der Vertikalen um etwa 20° versetzt. Dieser Winkel entspricht etwa dem Neigungswinkel des Schrämmhammers, welcher erforderlich ist, um die Seitenwandungen der Künette 12 annähernd vertikal abschrämmen zu können.As can be seen from FIG. 3, the locking bores 10 are arranged along an arc, the center of which lies in the longitudinal axis of the pivot axis 5. In the present embodiment, the central locking hole is arranged so that the hammer 2 is perpendicular to the quick-change device 4. The remaining locking holes are offset by about 20 ° from the vertical. This angle corresponds approximately to the angle of inclination of the cutting hammer, which is necessary in order to be able to cut off the side walls of the bezel 12 approximately vertically.

Soll mittels des Schrämmhammers die Seitenwand bearbeitet werden, dann wird der Schrämmhammer 2 mit der Spitze auf dem Boden aufgestellt, der Bolzen 6 mittels der hydraulischen Kolben-Zylinder-Einheit 11 aus der in der Öse 8 befindlichen Führungsbohrung und aus der Verriegelungsbohrung 10 der Schwenklasche 9 herausgezogen. Danach wird durch Verdrehen des Auslegers 1 der Schrämmhammer 2 in bezug auf den Baggerausleger 1 um die Schwenkachse 5 verschwenkt, und zwar so weit, bis die gewünschte Verriegelungsbohrung 10 mit den Führungsbohrungen in den ösen 7 und 8 fluchtet. Danach wird über die hydraulische Kolben-Zylinder-Einheit der Bolzen 6 eingeschoben und durch die hydraulische Kolben-Zylinder-Einheit in der eingeschobenen Stellung gehalten. Das Betätigen der hydraulischen Kolben-Zylinder-Einheit 11 kann dabei in üblicher Weise vom Führerstand des Baggers aus erfolgen. Für das Verschwanken des Schrämmhammers 2 in bezug auf den Baggerausleger 1 braucht somit kein Bedienungspersonal zusätzlich vorgesehen zu werden, sondern das Verschwenken kann der Baggerführer vom Führerstand aus allein vornehmen.If the side wall is to be machined using the hammer, then the hammer 2 is placed with the tip on the floor, the bolt 6 by means of the hydraulic piston-cylinder unit 11 from the guide bore in the eyelet 8 and from the locking bore 10 of the swivel bracket 9 pulled out. Then, by turning the boom 1, the cutter hammer 2 is pivoted with respect to the excavator boom 1 about the pivot axis 5 until the desired locking bore 10 is aligned with the guide bores in the eyelets 7 and 8. Then the pin 6 is inserted via the hydraulic piston-cylinder unit and held in the inserted position by the hydraulic piston-cylinder unit. The hydraulic piston-cylinder unit 11 can be actuated in the usual way from the driver's cab of the excavator. For the swinging of the hammer 2 in relation to the excavator boom 1, there is therefore no need for additional operating personnel, but the excavator operator can pivot from the driver's cab alone.

Claims (6)

  1. A pivotable suspension of a cutting hammer (2) on an excavator jib (1) or the like which is adapted to be hinged about a horizontal axis, and in which the cutting hammer is mounted to pivot in oscillating fashion crosswise to the angling plane about an axis (5) which is in the angling plane of the excavator jib (1), characterised in that for fixing of the cutting hammer (2) in the desired oscillating position in respect of the excavator jib (1), a form-locking coupling (6, 7, 8, 9) is provided of which at least one part (9) is rigidly mounted on the excavator jib (1) and the remaining part or parts (6, 7, 8) on the cutting hammer (2).
  2. A suspension according to claim 1, characterised in that the form-locking coupling is constituted by a bolt (8) and aligned bores which receive it.
  3. A suspension according to claim 2, characterised in that the bolt (6) is displaceable in an axial direction by means of a hydraulic piston-cylinder unit (11).
  4. A suspension according to claim 3, characterised in that for accommodating the bolt (6), guide bores are disposed in lugs (7, 8) on the part carrying the piston-cylinder unit (11) while the interlocking bores (10) are disposed in a pivoting lug (9) on the other part.
  5. A suspension according to claim 4, characterised in that the interlocking bores (10) are disposed in the pivoting lug (9) along an arc the middle point of which is on the axis of the pivoting axis (5).
  6. A suspension according to claim 4 or 5, characterised in that the pivoting lug (9) engages between the lugs (7, 8), the free distance between the lugs (7, 8) corresponding substantially to the thickness of the pivoting lug (9).
EP89905578A 1988-05-20 1989-05-18 Hammer-swinging mechanism Expired - Lifetime EP0407467B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1327/88 1988-05-20
AT0132788A AT390645B (en) 1988-05-20 1988-05-20 HAMMER SWIVELING DEVICE
PCT/AT1989/000050 WO1989011568A1 (en) 1988-05-20 1989-05-18 Hammer-swinging mechanism

Publications (2)

Publication Number Publication Date
EP0407467A1 EP0407467A1 (en) 1991-01-16
EP0407467B1 true EP0407467B1 (en) 1994-07-27

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ID=3511506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89905578A Expired - Lifetime EP0407467B1 (en) 1988-05-20 1989-05-18 Hammer-swinging mechanism

Country Status (5)

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US (1) US5111888A (en)
EP (1) EP0407467B1 (en)
AT (2) AT390645B (en)
DE (2) DE8808827U1 (en)
WO (1) WO1989011568A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101392542B (en) * 2008-10-23 2010-12-08 山东卡特重工有限公司 High-temperature crushing dredger
CN104132496A (en) * 2014-07-12 2014-11-05 孟令启 Cooling device for hydraulic breaking hammer

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US5183316A (en) * 1991-09-23 1993-02-02 Esco Corporation Mounting bracket for a working device
JP4274713B2 (en) * 2001-09-11 2009-06-10 シャープ株式会社 Liquid crystal display device, optical element, and manufacturing method thereof
US7658240B2 (en) 2007-03-12 2010-02-09 Anderson Paul L Methods and apparatus for forming hole in ground
FI123633B (en) * 2007-05-16 2013-08-30 Sandvik Mining & Constr Oy Breaking hammer and fastening method
EP2441914A4 (en) * 2009-05-25 2017-05-17 Young Seok Lee Hydraulic breaker
US9856699B2 (en) 2014-03-18 2018-01-02 Paul L. Anderson Methods and apparatus for forming hole in ground
CN108547342B (en) * 2016-08-16 2020-12-22 嘉兴市晨阳箱包有限公司 Breaking hammer

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Publication number Priority date Publication date Assignee Title
CN101392542B (en) * 2008-10-23 2010-12-08 山东卡特重工有限公司 High-temperature crushing dredger
CN104132496A (en) * 2014-07-12 2014-11-05 孟令启 Cooling device for hydraulic breaking hammer

Also Published As

Publication number Publication date
US5111888A (en) 1992-05-12
ATA132788A (en) 1989-11-15
EP0407467A1 (en) 1991-01-16
DE58908117D1 (en) 1994-09-01
AT390645B (en) 1990-06-11
DE8808827U1 (en) 1988-09-08
ATE109235T1 (en) 1994-08-15
WO1989011568A1 (en) 1989-11-30

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