EP0938403B1 - An einem handgriff führbares arbeitsgerät - Google Patents
An einem handgriff führbares arbeitsgerät Download PDFInfo
- Publication number
- EP0938403B1 EP0938403B1 EP97948910A EP97948910A EP0938403B1 EP 0938403 B1 EP0938403 B1 EP 0938403B1 EP 97948910 A EP97948910 A EP 97948910A EP 97948910 A EP97948910 A EP 97948910A EP 0938403 B1 EP0938403 B1 EP 0938403B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- working tool
- handle
- vibration
- hammer
- tool according
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/006—Vibration damping means
-
- 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
- B25D17/04—Handles; Handle mountings
- B25D17/043—Handles resiliently mounted relative to the hammer housing
-
- 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
- B25D17/24—Damping the reaction force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/221—Sensors
Definitions
- the invention relates to a tool that can be carried on a handle with a from an integrated power drive to the striking, pounding or vibrating loading of a material to be processed, especially tamper, vibratory plate or vibratory roller for soil compaction or hammer for demolition and / or drilling work.
- a hand tool with a vibration exciter is known from EP-A-206 981, where a parallel to the main vibration axis between two stops limited sliding handle is attached.
- the in the feed direction of the Hand tool arranged stop of the handle is designed as an electromagnet, the electromagnet with essentially constant DC is operated and generates a force that the pressure by the Counteracts operator.
- the force of the electromagnet is adjustable to a Adaptation to the conditions depending on the position of the hand tool enable.
- the invention has for its object these disadvantages of the usual To overcome vibration reduction on the handle, i.e. a vibration reduction without long travel and even with low frequency ratios to achieve with good efficiency.
- the solution to this problem is with a tool type mentioned in that the handle by at least an active counteracting a vibration transmission on it controlled or regulated compensation element that is dependent from the one that can be transferred to him, in and / or on the implement resulting vibration a compensating force and / or movement in the potential vibration transmission path from the point of origin the vibration generated to it, actively dampened vibration is.
- FIG. 1 and 2 is a designed according to the invention Demolition and / or hammer drill H shown, the handle GR with a power supply S and one using a button TA has actuatable on-off switch EA.
- GR a regulation and control unit housed RSE, whose Function will be explained below.
- a first one first spring-damper element FD1 having joint G1 and a second, a second spring-damper element FD2 Joint G2 with transverse to the direction of impact of the tool and to each other parallel joint axes is with the handle GR connected to a carrier T, to which a first electromagnetic actuatable actuator A1 and a second electromagnetically actuatable actuator A2 a relative to the carrier T and Handle GR movable hammer housing HG is connected in which is a drive motor M and a receptacle that can be driven by it WA are arranged for a striking tool, not shown.
- the direction of action of the actuators A1 and A2 runs parallel to Direction of impact or guidance of the tool. It also carries Hammer housing HG an auxiliary handle FG for better guidance of the Tool.
- An input sensor S1 is attached to the hammer housing HG, which is suitable for measuring the vibration of the hammer housing and for delivering a first measurement signal I 1 , which is dependent on the vibration of the hammer housing HG in the guide direction of the tool, to the regulating and control unit RSE.
- a fault sensor S2 is attached to the carrier T. It is suitable for emitting a signal I 2 , which is dependent on the vibration of the handle GR in this guide direction, to the regulating and control unit RSE.
- the regulating and control unit RSE activates the actuators A1 and A2 in such a way that their oscillation amplitudes are controlled in phase opposition to the vibration of the hammer housing HG and their size corresponds as far as possible to the size of the vibration of the hammer housing.
- the vibration movement of the hammer housing HG is thus compensated for by the opposite vibration movement on the actuators A1 and A2 and thereby at least largely kept away from the handle GR.
- FIG. 3 shows possible embodiments of hammers with actuators A w giving away and actuators A k giving force, the number of actuators A also varying.
- a hammer is shown in the upper row on the left, in which the hammer housing is guided on the handle in the direction of vibration of the tool by way of guide rods attached to it and engaging in the handle.
- an actuator A w is arranged and connected to both, which controls the relative movement between the two so that the handle remains practically at rest.
- the guides are unnecessary because the handle and hammer housing are connected by two actuators A w arranged parallel and at a mutual distance from one another.
- each pair w of a acting in the guidance direction of the impact tool weg sacrificeden actuator A and a transverse thereto acting weg sacrificeden actuator A f is to be able to compensate in this transverse direction acting vibrations ,
- the middle embodiment in the middle row corresponds in the overall arrangement to the embodiment described above, with the difference that the actuator is a force-giving actuator A k , which exerts a controlled compensating force on these other parts of the hammer, which is equal to that of the vibrating part VQ Hammers H outgoing, counteracts this acting force.
- the actuator is a force-giving actuator A k , which exerts a controlled compensating force on these other parts of the hammer, which is equal to that of the vibrating part VQ Hammers H outgoing, counteracts this acting force.
- the left embodiment in the lower row is a variant corresponding to the above-described embodiment with a force-exciting actuator A k , in which the guide of the hammer housing corresponds to the left embodiment in the upper row and the actuator A k compensates the force exerted by the guide the handle GR acts and wants to vibrate it so that the handle GR remains practically at rest.
- the right-hand embodiment in the lower row corresponds to the embodiment shown above in the middle row, with the difference that a force-exciting actuator A k is provided to compensate for the forces occurring transversely to the guide direction, which emanate from the oscillating or vibrating hammer part VQ and vibrations or Want to excite vibrations of the other parts of the hammer H.
- the right variant in the middle row differs of all other embodiments in that the handle the handle is controllably shaped and the Shape change in the vibrations of the hammer housing HG compensating Way depending on the handle on the hammer forces acting in a known manner is controlled.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Boring (AREA)
Abstract
Description
- Fig. 1
- einen Schnitt durch einen erfindungsgemäß ausgebildeten Aufbruch- oder Bohrhammer,
- Fig. 2
- einen Detailschnitt durch das den Handgriff aufweisende Ende des Hammers in größerem Maßstab und
- Fig. 3
- eine schematische Übersicht über unterschiedliche Ausführungsformen eines erfindungsgemäßen Geräts.
Claims (12)
- An einem Handgriff führbares Arbeitsgerät mit einem von einem integrierten Kraftantrieb angetriebenen Arbeitskörper zum schlagenden, stampfenden oder vibrierenden Beaufschlagen eines zu bearbeitenden Materials, insbesondere Stampfer, Vibrationsplatte oder Vibrationswalze zur Bodenverdichtung oder Hammer für Aufbruch- und/oder Bohrarbeiten, dadurch gekennzeichnet, daß der Handgriff durch mindestens ein einer Vibrationsübertragung auf ihn entgegenwirkendes, aktiv gesteuertes oder geregeltes Kompensationsglied (A1, A2; Ak, Aw) ,das in Abhängigkeit von der zu ihm übertragbaren, im und/oder am Arbeitsgerät (H) entstehenden Vibration, eine kompensierende Kraft und/oder Bewegung in dem potententiellen Vibrationsübertragungsweg vom Entstehungsort (VQ) der Vibration zu ihm erzeugt, aktiv schwingungsgedämpft ist.
- Arbeitsgerät nach Anspruch 1, gekennzeichnet durch mehrere, in dem potentiellen Vibrationsübertragungsweg seriell und/oder parallel zueinander wirkende aktiv geregelte Kompensationsglieder (A1, A2; Ak, Aw).
- Arbeitsgerät nach Anspruch 1, dadurch gekennzeichnet, daß mehrere in gleicher Richtung wirkend angeordnete Kompensationsglieder (A1, A2; Ak, Aw) parallel zueinander vorgesehen sind.
- Arbeitsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kompensationsglieder (Ak, Aw) in mindestens zwei verschiedenen Richtungen wirken und in den einzelnen Richtungen gesondert aktiv geregelt sind.
- Arbeitsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in dem potentiellen Vibrationsübertragungsweg auch passive Dämpfungsglieder (G1, G2) vorhanden sind.
- Arbeitsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Griffteil (GRT) des Handgriffs in Abhängigkeit von der zu ihm übertragbaren, im und/oder am Arbeitegerät (H) entstehenden Vibration geregelt formveränderbar ist.
- Arbeitsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßdas Arbeitsgerät ein Aufbruch- und/oder Bohrhammer ist;ein gegen das Hammergehäuse (HG) abgefederter Handgriff (GR) vorgesehen ist; und daßzwischen dem Hammergehäuse und dem Handgriff (GR) mindestens ein Aktor (A1, A2) angeordnet ist, der in Richtung der zur Führung des Hammers (H) stattfindenden Kraftübertragung schwingungsfähig ist und dessen Schwingungsamplitude in Abhängigkeit von einem ersten, der Größe der Vibration des Hammergehäuses (HG) in dieser Richtung entsprechenden Meßsignal (I1) und/ oder einem zweiten, der Vibration des Handgriffs (GR) in dieser Richtung entsprechenden Meßsignal (I2) von einer Regelungs- und Steuereinheit (RSE) in Gegenphase zur Vibration des Hammergehäuses (HG) gesteuert ist.
- Arbeitsgerät nach Anspruch 7, dessen Handgriff (GR) über im gegenseitigen Abstand in Richtung quer zur Hammerlängsachse angeordnete Gelenke (G1, G2) mit dem Hammergehäuse (HG) verbunden ist, dadurch gekennzeichnet, daß der mindestens eine Aktor (A1, A2) zwischen einem Gelenk (G1, G2) und dem Hammergehäuse (HG) angeordnet ist.
- Arbeitsgerät nach Anspruch 8, dadurch gekennzeichnet, daß zwischen jedem Gelenk (G1, G2) und dem Hammergehäuse (HG) ein gemäß Anspruch 7 eingerichteter und gesteuerter Aktor (A1, A2) eingefügt ist.
- Arbeitsgerät nach Anspruch 8 und 9, dadurch gekennzeichnet, daß die Gelenke (G1, G2) starr an einem gemeinsamen Träger (T) angebracht sind, der über die Aktoren (A1, A2) an das Hammergehäuse (HG) angeschlossen ist.
- Arbeitsgerät nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß die Aktoren (A1, A2) als elektromagnetische Weggeber ausgeführt sind.
- Arbeitsgerät nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß die Gelenke (G1, G2) in Grenzen elastisch derart ausgeführt sind, daß sie auch als passive, elastische Dämpfungsglieder in dem Vibrationsübertragungsweg vom Hammergehäuse (HG) zum Handgriff (GR) wirken.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19646622 | 1996-11-12 | ||
DE19646622A DE19646622B4 (de) | 1996-11-12 | 1996-11-12 | An einem Handgriff führbares Arbeitsgerät |
PCT/EP1997/006242 WO1998021014A1 (de) | 1996-11-12 | 1997-11-10 | An einem handgriff führbares arbeitsgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0938403A1 EP0938403A1 (de) | 1999-09-01 |
EP0938403B1 true EP0938403B1 (de) | 2002-02-06 |
Family
ID=7811365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97948910A Expired - Lifetime EP0938403B1 (de) | 1996-11-12 | 1997-11-10 | An einem handgriff führbares arbeitsgerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US6076616A (de) |
EP (1) | EP0938403B1 (de) |
JP (1) | JP4304545B2 (de) |
DE (2) | DE19646622B4 (de) |
ES (1) | ES2172022T3 (de) |
WO (1) | WO1998021014A1 (de) |
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US2425245A (en) * | 1945-03-30 | 1947-08-05 | Conrad B Johnson | Cushion grip for air hammers and the like |
JPS54127080A (en) * | 1978-03-25 | 1979-10-02 | Makoto Nandate | Vibration isolation device in handle of machine in which vibration is formed |
US4237987A (en) * | 1978-10-27 | 1980-12-09 | Sherman Victor L | Percussive tool |
JPS57500742A (de) * | 1980-06-02 | 1982-04-30 | ||
JPS5946748B2 (ja) * | 1980-10-22 | 1984-11-14 | 一登 背戸 | 防振用ハンドル装置 |
SE8107226L (sv) * | 1981-01-28 | 1982-07-29 | Byggergonomilaboratoriet Hb | Vibrationsdempande anordning |
DE3122979A1 (de) * | 1981-06-10 | 1983-01-05 | Hilti AG, 9494 Schaan | Bohr- oder meisselhammer |
DE3312195A1 (de) * | 1983-04-02 | 1984-10-11 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | Handgefuehrter schlag- und bohrhammer |
DE3410669A1 (de) * | 1984-03-23 | 1985-10-24 | Metabowerke GmbH & Co, 7440 Nürtingen | Daempfungselement und dessen einbau in ein motorisch angetriebenes handwerkzeug |
DE3505181A1 (de) * | 1985-02-15 | 1986-08-21 | Hilti Ag, Schaan | Schwingungen erzeugendes handwerkzeug |
DE3521808A1 (de) * | 1985-06-19 | 1987-01-02 | Hilti Ag | Schwingungen erzeugendes handwerkzeug |
PL153526B1 (en) * | 1988-03-29 | 1991-04-30 | Politechnika Poznanska | Pneumatic impact tool |
JP2683911B2 (ja) * | 1988-04-28 | 1997-12-03 | 株式会社芝浦製作所 | 振動工具 |
DE3839207A1 (de) * | 1988-11-19 | 1990-05-23 | Hilti Ag | Tragbares handgeraet mit schlagwerk |
IL105743A0 (en) * | 1992-06-11 | 1993-09-22 | Dov Shilkrut | Penetrating tool system |
JPH0672159A (ja) * | 1992-07-10 | 1994-03-15 | Mazda Motor Corp | 車両の振動低減装置 |
DE19503526A1 (de) * | 1995-02-03 | 1996-08-08 | Bosch Gmbh Robert | Bohr- und/oder Schlaghammer mit abnehmbarem vibrationsgedämpften Handgriff sowie vibrationsgedämpfte Handgriffanordnung für einen Bohr- und/oder Schlaghammer |
-
1996
- 1996-11-12 DE DE19646622A patent/DE19646622B4/de not_active Expired - Fee Related
-
1997
- 1997-11-10 DE DE59706335T patent/DE59706335D1/de not_active Expired - Lifetime
- 1997-11-10 ES ES97948910T patent/ES2172022T3/es not_active Expired - Lifetime
- 1997-11-10 EP EP97948910A patent/EP0938403B1/de not_active Expired - Lifetime
- 1997-11-10 WO PCT/EP1997/006242 patent/WO1998021014A1/de active IP Right Grant
- 1997-11-10 US US09/171,016 patent/US6076616A/en not_active Expired - Lifetime
- 1997-11-10 JP JP52215898A patent/JP4304545B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0938403A1 (de) | 1999-09-01 |
DE19646622A1 (de) | 1998-05-20 |
DE19646622B4 (de) | 2004-07-01 |
JP2001503684A (ja) | 2001-03-21 |
US6076616A (en) | 2000-06-20 |
ES2172022T3 (es) | 2002-09-16 |
DE59706335D1 (de) | 2002-03-21 |
WO1998021014A1 (de) | 1998-05-22 |
JP4304545B2 (ja) | 2009-07-29 |
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