EP2804987B1 - Fouloir - Google Patents

Fouloir Download PDF

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Publication number
EP2804987B1
EP2804987B1 EP13700253.1A EP13700253A EP2804987B1 EP 2804987 B1 EP2804987 B1 EP 2804987B1 EP 13700253 A EP13700253 A EP 13700253A EP 2804987 B1 EP2804987 B1 EP 2804987B1
Authority
EP
European Patent Office
Prior art keywords
mass
energy store
vibration
tamper
absorber
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.)
Active
Application number
EP13700253.1A
Other languages
German (de)
English (en)
Other versions
EP2804987A1 (fr
Inventor
Michael Steffen
Philip Overfeld
Rudolf Berger
Helmut Braun
Christian Glanz
Dirk Sibila
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.)
Wacker Neuson Produktion GmbH and Co KG
Original Assignee
Wacker Neuson Produktion GmbH and Co KG
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 Wacker Neuson Produktion GmbH and Co KG filed Critical Wacker Neuson Produktion GmbH and Co KG
Publication of EP2804987A1 publication Critical patent/EP2804987A1/fr
Application granted granted Critical
Publication of EP2804987B1 publication Critical patent/EP2804987B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/074—Vibrating apparatus operating with systems involving rotary unbalanced masses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
    • F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems

Definitions

  • the invention relates to a hand-held implement for tillage with a mass of at least 15 kg, for example, a rammer or a large or Aufbruchhammer.
  • the invention has for its object to provide a rammer for soil compaction with a fed from an electrical energy storage electric motor, a higher ease of use at the same time allows cost-effective and energy-efficient design of the device.
  • a rammer for soil compaction has a holding device for holding the rammer in a main working position, an upper mass, a lower mass arranged resiliently in the main working position below the upper mass and elastically movably coupled to the upper mass with a ground contact device oriented downwards in the main working position, a vibration excitation device for producing a working movement the lower mass, wherein the ground contact device is displaceable in a in the main working position downwardly directed striking movement, an electric motor having a drive device for driving the vibration excitation device and an electrical energy storage for supplying the electric motor with electrical energy.
  • the energy store is decoupled by a vibration decoupling device of vibrations at the upper mass or the lower mass.
  • the implement forming the rammer may have a weight of at least 15 kg.
  • the holding device which may also be referred to as a guide device, allows an operator to hold the implement over the ground to be worked and to guide it during the working movement. It may comprise a guide frame with gripping devices or separate handles not arranged on a guide frame for holding the working device in the main working position.
  • the gripping devices or grips can be arranged laterally in an upper section of the working device approximately at the level of the arms of the operator.
  • the holding device may alternatively or additionally comprise a guide bracket for pulling or pushing the working device.
  • operating elements On the holding device operating elements may be arranged, for example for driving the drive device or for interrupting the working movement.
  • the holding device allows the operator to hold the implement in the main working position during work operation.
  • the implement is thus hand-held or hand-held during operation. If the implement has a large mass, holding the implement involves a high level of physical strain on the operator, who remains with his arms Main working position, make sure the unit is guided and, if necessary, intercept the impact of the implement.
  • the main working position of the working implement can ensure effective tillage and in particular ensure a direction of impact of the ground contact device with a substantially vertical orientation on the ground located under the implement. This requires that the lower mass and the upper mass are arranged substantially one above the other in the main working position.
  • the upper mass may have a mass that allows a substantially quiet guiding of the implement. It can, for example in the case of the rammer, comprise a large part of the components necessary for operating the working device, such as the vibration excitation device and / or the drive device with the electric motor, whose mass can thus contribute to the upper mass without increasing the total weight.
  • the upper mass may also have only a protective cover which encloses the lower mass, for example, upwards, laterally and in the direction of the operator and on which the grip device may be arranged.
  • the lower mass can be resiliently coupled to the upper mass, for example by a spring device and arranged in the main working position below the upper mass.
  • the ground contact device may be fixed so that the ground contact device is forced by vibrations of the lower mass in a working movement with impact direction in the direction of the ground.
  • the ground contact device may in the case of a rammer have a ground contact plate which can strike during the working operation on the ground to be compacted and this.
  • the ground contact device may include a breakaway tool such as a breakaway bit to break up the ground.
  • the lower mass may have a percussion device with a percussion piston and acted upon by the percussion piston striker, which acts on the Aufschlagm composedel.
  • the percussion piston can be drivable by the arranged on the upper or lower mass drive device and in a striking movement with impact on the striker offset.
  • the percussion piston can be driven by a drive piston of the drive device via an air spring impact mechanism.
  • the vibration excitation device By means of the vibration excitation device, the lower mass can be vibrated relative to the upper mass and the ground contact device can be displaced into the working movement.
  • the vibration excitation device may be arranged on the lower mass and have at least one imbalance shaft with unbalanced mass disposed thereon for generating the vibrations.
  • the vibration excitation device In a rammer, the vibration excitation device may be disposed on the upper mass or between the upper and lower mass, and e.g. have a coupled with the lower mass crank mechanism.
  • the vibration excitation device In a hammer, the vibration excitation device may be disposed on the upper mass and via a crank mechanism, for example. drive the drive piston, the impulse as already shown on the air spring impact on the percussion piston and by impact on the striker on the Aufschlagm composedel is transferable.
  • the vibration excitation device for example the imbalance shaft or the crank drive
  • the drive device may be arranged on the upper or lower mass and in addition to the electric motor also have other motors, such as an internal combustion engine for a hybrid drive, which can allow the greatest possible use times and independence of power sources.
  • the electric motor may be a universal motor, an induction motor, a switched reluctance motor (SR motor), a DC motor (BDC motor) or a brushless DC motor (BLDC motor).
  • the electric motor can be powered alone or exclusively by the electrical energy storage.
  • the electric motor can optionally be fed by the energy store or by an external power source, for example a socket of a power supply network, a building power source or a generator.
  • the energy store may be a rechargeable battery of a suitable power class, for example a lithium-ion or a lithium-polymer rechargeable battery.
  • the energy store can have electrochemical cells and be enclosed by a housing, for example a plastic housing.
  • the housing may encapsulate the electrochemical cells and have electrical connection devices and optionally control and display devices.
  • the energy storage device can, for example, with the housing a commercial Form unity. Furthermore, the energy storage can also be composed of several accumulators.
  • the energy store can be arranged on the upper mass or the lower mass. Although in this position it is close to the components which are strongly moving during operation, it can be protected against vibrations, shocks by the vibration decoupling device, which prevents damage and wear. Consequently, it is not necessary to arrange the energy storage remote from the ground contact device, for example on the holding device.
  • the energy store can be arranged in an environment of the drive device or close to the drive device and in particular on the electric motor to be fed.
  • the electric motor For electrical connection of the electric motor to the energy storage, it is therefore sufficient to provide a short cable, reduced by the power losses or kept low. Consequently, more power is available to generate the working movement of the implement, and the implement can be operated in an energy efficient manner.
  • the energy storage device and the vibration decoupling device act in this arrangement as a damping system, which has a damping mass which is movable relative to the upper or lower mass and which comprises the mass of the energy reservoir.
  • the absorber mass is coupled via the vibration decoupling device relatively movable to the upper or lower mass.
  • the vibration decoupling device may include spring means such as a coil spring, an elastomeric member (e.g., rubber) of appropriate stiffness and damping, or other suitable materials such as rubber. a viscous fluid. Consequently, the absorber system can be designed as an undamped, damped or viscous absorber. Furthermore, the absorber system may act passively or actively, wherein in an active mode of action, an additional actuator may be provided to enable the absorber mass to vibrate.
  • spring means such as a coil spring, an elastomeric member (e.g., rubber) of appropriate stiffness and damping, or other suitable materials such as rubber.
  • a viscous fluid Consequently, the absorber system can be designed as an undamped, damped or viscous absorber.
  • the absorber system may act passively or actively, wherein in an active mode of action, an additional actuator may be provided to enable the absorber mass to vibrate.
  • the absorber mass can be determined by the mass of the system to be calmed from the upper and lower mass and, for example, be about 5 to 10% of the system mass, but also greater than 10% of the system mass.
  • the absorber mass can be greater than 10% of the system mass if the energy store has a large mass due to the high power requirement of the implement. For weight and space reasons, the absorber mass can also be lower.
  • the absorber system allows resonances in the region of a natural frequency of a system to be quieted to be considerably damped or even completely eliminated, depending on the tuning of the system.
  • a suitable location can be determined at which the absorber system is to be placed advantageously.
  • the absorber system can be arranged in particular on the upper mass, but also on the lower mass, but not in the power flow between upper and lower mass. However, it can readily be installed in the immediate vicinity of components that are in the force flow.
  • the movability of the absorber mass in particular of the energy store, can be determined in such a way that occurring oscillations are best eradicated.
  • the absorber system can be designed as a linear vibration absorber, for example by allowing relative mobility of the energy accumulator mainly in the linear direction.
  • the energy store and the holding device are arranged on the upper mass.
  • the upper mass is increased relative to the total weight. As a result, vibrations of the upper mass be reduced during operation. With the assembly of the holding device on the upper mass so as to support a quiet holding and guiding the implement by the operator and the operator acting on the hand-arm vibrations can be reduced.
  • an additional vibration decoupling device such as a rubber buffer and / or a spring device between the upper mass and the holding device may be arranged.
  • the energy store can be arranged in the region of a substantially vertical central axis or main axis of the implement.
  • the central axis of the implement may correspond substantially to the impact axis of the ground contact device along which the beats are directed substantially perpendicular to the soil to be worked. Down along the central axis may initially below the lower mass with the downwardly directed ground contact device and above the upper mass may be arranged, which amplifies the ground contact in this position by their mass.
  • the center axis may also correspond to an axis of symmetry of the implement with a course substantially perpendicular to the ground.
  • the center of gravity of the working device lying, for example, in the region of the striking axis is not displaced by the energy store in the horizontal plane, as would be the case with a lateral arrangement of the energy store at a distance from the central axis.
  • the focus and the weight distribution of the implement are therefore favorably influenced, which among other things improves the handling of the implement.
  • the energy store is arranged in the main working position above the upper mass, ie at a side of the upper mass facing away from the ground in the main working position.
  • This arrangement allows a simple construction, in particular the upper mass, as within the upper mass no separate space for the energy storage is to be provided. Furthermore, the energy storage above the upper mass can be easily arranged in the region of the central axis.
  • the cover device can be designed for example by a flat cover plate made of a material reflecting the solar radiation with a suitable strength to protect the energy storage.
  • the energy store can be arranged structurally integrated in an environment of the drive device, on the drive device and / or with the drive device.
  • the supply of the electric motor can be achieved by the energy storage with a relatively short cabling. This prevents power loss in the cable and enables energy-efficient operation of the implement.
  • the vibration decoupling device may have a spring device and / or a damper device.
  • the vibration decoupling device may comprise a simple spring damper system with, for example, a coil spring and an oil pressure damper.
  • an absorber mass is provided in addition to the energy storage.
  • the additional absorber mass is like the energy storage relative to the upper mass movable and thus causes a reduction in the vibrations, analogous to the energy storage.
  • the arrangement of the additional absorber mass relative to the energy store and in particular to the upper mass can be done in various alternative variants, as explained below.
  • the absorber mass is arranged on the energy store and is connected in a vibration-decoupled manner with the upper mass together with the energy store via the vibration decoupling device.
  • the absorber mass and the energy storage can thus form, for example, a structural unit which is movable relative to the upper mass via the vibration decoupling device.
  • the absorber mass is vibration-decoupled via its own, further vibration decoupling device with the upper mass, while the energy storage in turn is coupled via the associated vibration decoupling device to the upper mass. Due to the joint effect of absorber mass and energy storage on the upper mass, the vibration is calmed.
  • the damper mass is connected to the energy store in a vibration-decoupled manner via its own further vibration decoupling device.
  • the absorber mass is seated e.g. with its own (the other) vibration decoupling device on the energy storage, which in turn is coupled via its vibration decoupling device to the upper mass.
  • the energy store is connected via the vibration decoupling device with the absorber mass and the absorber mass is connected via a separate oscillation decoupling device with the upper mass vibration-decoupled.
  • the absorber mass is thus effectively arranged between the energy store and the upper mass, wherein it is connected to both components via vibration decoupling device.
  • an electronic control device for controlling the drive device is arranged on the energy store or as the further absorber mass.
  • control device can be firmly connected to the housing of the energy store. It can further increase the mass of the absorber system and further improve vibration damping without increasing the overall weight of the implement. In this arrangement, the control device is protected against vibration or shock discharges and also supplied directly from the energy storage.
  • the controller can also be vibration-decoupled from the energy store and thus, as an additional absorber mass, can cancel out vibrations of other frequencies, for example.
  • the implement may be a hand-held, large-sized hammer.
  • the vibration excitation device may comprise a crank mechanism coupled to the lower mass for displacing the lower mass into the working movement.
  • the vibration excitation device has no movable imbalance masses for generating the working movement. This embodiment can be used in particular with a hammer or rammer.
  • Fig. 1 schematically shows a side sectional view of a rammer 1 with an upper mass 2 and a relative to the upper mass 2 relatively movable lower mass 3.
  • the lower mass 3 has a padfoot with a ground contact plate 4 serving as a ground contact device.
  • the upper mass 2 comprises inter alia a drive device (not shown) with an electric motor (not shown) which drives a crank drive (not shown) connected to the lower mass 3.
  • a crank drive (not shown) connected to the lower mass 3.
  • the crank mechanism By means of the crank mechanism, the upper mass 2 and the lower mass 3 can be displaced relative to each other in an oscillating relative movement, by which the ground contact plate 4 is forced into a pounding working movement with a direction of impact substantially perpendicular to the ground 5 to be processed.
  • the bottom 5 can be processed or compacted in the illustrated upright main working position.
  • the direction of impact can essentially follow a central axis of the rammer 1, in the vicinity of which the center of gravity of the rammer 1 is located.
  • a holding device 6 is provided on which, for example, an operator handle can be arranged.
  • the holding device 6 is arranged on the upper mass 2 and can be decoupled, for example by a rubber buffer 7 of vibrations of the upper mass 2.
  • an electrical energy store 8 is provided, which is arranged above the upper mass 2 in the embodiment shown. Structurally integrated with the energy storage 8, a control device 9 is provided for controlling the rammer 1 and in particular of the electric motor.
  • the energy store 8 and the control device 9 can be arranged in the embodiment shown in a common housing.
  • the housing with the energy store 8 and the control device 9 is coupled via a vibration decoupling device with a spring device 10 and a damper device 11 relatively movable with the upper mass 2.
  • the components 8, 9, 10 and 11 therefore act as a (dashed framed) absorber system 12, which comprises the absorber mass of the mass of the energy storage device 8 and the control device 8, and in a working operation of the rammer vibrations of the upper mass 2, in particular resonances in the range Natural frequency of the upper mass 2, can significantly reduce.
  • vibrations and vibrations of the upper mass 2 can be effectively reduced in the working mode. Consequently, arranged on the upper mass 2 components such as the electric motor and the crank mechanism are protected with their electrical or mechanical connections from vibration discharges and shocks. This extends the service life and enables a simpler and thus more cost-effective design of the components.
  • the center of gravity of the rammer 1 is not displaced substantially laterally. This facilitates the holding and guiding of the rammer 1 in the main working position.
  • the energy accumulator 8 By arranging the energy accumulator 8 on the upper mass, the length of a wiring between the energy storage 8 and arranged on the upper mass 2 electric motor can be kept short, whereby power losses are reduced in the cable. As a result, an energy-efficient operation of the rammer 1 can be supported.
  • control device 9 at the top of the rammer 1 favors good operability by the operator.
  • the control device 9 can be easily supplied by the energy storage 8 in this arrangement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Sustainable Development (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Claims (9)

  1. Pilon (1) pour le damage de sols avec
    - un dispositif de maintien (6) pour le maintien du pilon (1) dans une position de travail principale ;
    - une masse supérieure (2) ;
    - une masse inférieure (3), disposée dans la position de travail principale, en dessous de la masse supérieure (2), et couplée de manière mobile élastiquement avec la masse supérieure (2), avec un dispositif de contact avec le sol (4) orienté vers le bas dans la position de travail principale ;
    - un dispositif de génération de vibrations pour la production d'un mouvement de travail de la masse inférieure (3), le dispositif de contact avec le sol (4) pouvant être soumis à un mouvement d'impact orienté vers le bas dans la position de travail principale ;
    - un dispositif d'entraînement comprenant un moteur électrique pour l'entraînement du dispositif de génération de vibrations ; et avec
    - un accumulateur d'énergie électrique (8) pour l'alimentation du moteur électrique en énergie électrique ;
    - l'accumulateur d'énergie (8) étant disposé au niveau de la masse supérieure (2) ou de la masse inférieure (3) de façon à pouvoir être découplée des vibrations par un dispositif de découplage de vibrations (10, 11) ; et
    - l'accumulateur d'énergie (8) étant disposé au niveau d'un axe central globalement vertical du pilon (1).
  2. Pilon (1) selon la revendication 1, l'accumulateur d'énergie (8) et le dispositif de maintien (6) étant disposés au niveau de la masse supérieure (2).
  3. Pilon (1) selon l'une des revendications précédentes, l'accumulateur d'énergie (8) étant disposé, dans la position de travail principale, au-dessus de la masse supérieure (2).
  4. Pilon (1) selon l'une des revendications précédentes, l'accumulateur d'énergie (8) étant disposé dans un environnement du dispositif d'entraînement, sur le dispositif d'entraînement et/ou de façon à être intégré dans le dispositif d'entraînement.
  5. Pilon (1) selon l'une des revendications précédentes, le dispositif de découplage de vibrations comprenant un dispositif à ressort (10) et/ou un dispositif d'amortissement (11).
  6. Pilon (1) selon l'une des revendications précédentes, avec
    - une masse d'amortissement prévue en plus de l'accumulateur d'énergie,
    - la masse d'amortissement étant disposée sur l'accumulateur d'énergie (8) et étant reliée, conjointement avec l'accumulateur d'énergie (8), de manière découplée en vibrations, par l'intermédiaire du dispositif de découplage de vibrations, avec la masse supérieure (2) ; ou
    - la masse d'amortissement étant reliée, de manière découplée en vibrations, par l'intermédiaire de son propre dispositif de découplage de vibrations, avec la masse supérieure (2) ; ou
    - la masse d'amortissement étant reliée, de manière découplée en vibrations, par l'intermédiaire de son propre dispositif de découplage de vibrations, avec l'accumulateur d'énergie (8) ; ou
    - l'accumulateur d'énergie (8) étant relié par l'intermédiaire du dispositif de découplage d'énergie avec la masse d'amortissement et la masse d'amortissement étant reliée, de manière découplée en vibrations, par l'intermédiaire de son propre dispositif de découplage de vibrations, avec la masse supérieure (2).
  7. Pilon (1) selon l'une des revendications précédentes, un dispositif de commande électronique (9) étant disposé, pour la commande du dispositif d'entraînement, sur l'accumulateur d'énergie (8) ou en tant que composant de l'autre masse d'amortissement.
  8. Pilon (1) selon l'une des revendications précédentes, le dispositif de travail (1) présentant un poids d'au moins 15 kg.
  9. Pilon (1) selon l'une des revendications précédentes, le dispositif de génération de vibrations comprenant un mécanisme à manivelle, couplé avec la masse inférieure (3), pour la mise de la masse inférieure (3) en mouvement de travail.
EP13700253.1A 2012-01-16 2013-01-08 Fouloir Active EP2804987B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012000711A DE102012000711A1 (de) 2012-01-16 2012-01-16 Arbeitsgerät mit schwingungsentkoppeltem Energiespeicher
PCT/EP2013/000033 WO2013107613A1 (fr) 2012-01-16 2013-01-08 Compacteur de sol

Publications (2)

Publication Number Publication Date
EP2804987A1 EP2804987A1 (fr) 2014-11-26
EP2804987B1 true EP2804987B1 (fr) 2017-11-01

Family

ID=47559448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13700253.1A Active EP2804987B1 (fr) 2012-01-16 2013-01-08 Fouloir

Country Status (3)

Country Link
EP (1) EP2804987B1 (fr)
DE (1) DE102012000711A1 (fr)
WO (1) WO2013107613A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2023018873A1 (fr) * 2021-08-11 2023-02-16 Milwaukee Electric Tool Corporation Refouloir doté d'une isolation de vibrations

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
DE102017200649B4 (de) * 2016-04-29 2020-08-27 Audi Ag Schwingungstilger für ein Fahrzeugteil
CN108342971B (zh) * 2018-04-28 2023-05-09 招商局重庆交通科研设计院有限公司 一种移动式水泥路面破碎机
GB2604347A (en) * 2021-03-01 2022-09-07 Black & Decker Inc A compacting power tool

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Publication number Priority date Publication date Assignee Title
JP2003505837A (ja) * 1999-07-27 2003-02-12 ワツカー ヴエルケ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング ウント コンパニー コマンデイトゲゼルシヤフト 始動バッテリーのための振動絶縁式の保持装置を備えた地盤締固め装置
EP1267001B1 (fr) * 2001-06-14 2009-09-23 Swepac International AB Compacteur à plaque vibrante
DE102010015950B4 (de) * 2010-03-12 2012-12-13 RAVI Baugeräte GmbH Handrüttelgerät zur Verdichtung von Materialien im Straßen-, Gleis- und Erdbau
WO2011127611A2 (fr) * 2010-04-16 2011-10-20 Ammann Schweiz Ag Agencement pour fournir une force de pression pulsée
DE102010055632A1 (de) * 2010-12-22 2012-06-28 Wacker Neuson Produktion GmbH & Co. KG Bodenverdichtungsvorrichtung mit luftgekühlten Akku

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023018873A1 (fr) * 2021-08-11 2023-02-16 Milwaukee Electric Tool Corporation Refouloir doté d'une isolation de vibrations

Also Published As

Publication number Publication date
EP2804987A1 (fr) 2014-11-26
WO2013107613A1 (fr) 2013-07-25
DE102012000711A1 (de) 2013-07-18

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