EP2764161A1 - Electric tool having a protective hood - Google Patents

Electric tool having a protective hood

Info

Publication number
EP2764161A1
EP2764161A1 EP12766884.6A EP12766884A EP2764161A1 EP 2764161 A1 EP2764161 A1 EP 2764161A1 EP 12766884 A EP12766884 A EP 12766884A EP 2764161 A1 EP2764161 A1 EP 2764161A1
Authority
EP
European Patent Office
Prior art keywords
cover
implement
ground contact
tool
energy store
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
EP12766884.6A
Other languages
German (de)
French (fr)
Other versions
EP2764161B1 (en
Inventor
Rudolf Berger
Michael Steffen
Christian Glanz
Philip Overfeld
Dirk Sibila
Helmut Braun
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 EP2764161A1 publication Critical patent/EP2764161A1/en
Application granted granted Critical
Publication of EP2764161B1 publication Critical patent/EP2764161B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • E02D3/068—Vibrating apparatus operating with systems involving reciprocating masses
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
    • E01C19/262—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles pedestrian-controlled, e.g. with safety arrangements for operator
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/282—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit
    • E01C19/283—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit pedestrian-controlled, e.g. with safety arrangements for operator
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/32—Hand-held hand-actuated rammers or tampers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/35—Hand-held or hand-guided tools
    • 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
    • B25D2250/121—Housing details
    • 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
    • B25D2250/245—Spatial arrangement of components of the tool relative to each other

Definitions

  • the invention relates according to claim 1, a working device for processing a bottom portion, such as a rammer, a vibrating plate, a roller or a breaker.
  • the invention has for its object to provide a powered from an electrical energy storage implement for tillage, which favors a long life or service life of the electrical energy storage.
  • An implement has a ground contact device for processing a ground area located below the ground contact device in a working position of the implement, a drive device for generating a working movement of the ground contact device, an electrical energy store enclosed by a housing for supplying the electric motor with electrical energy and a motor vehicle arranged in the working position above the energy storage cover device for covering the housing and thus the energy storage.
  • the implement can be used for soil compaction and / or tillage.
  • Work tools for soil compaction are, for example, rammers, vibratory plates or rollers.
  • Tools for tillage are, for example, large or Aufbruchophener for processing or breaking a floor area.
  • the implement may have a mass of, for example, at least 15 kg. It may be durable by an operator in the working position, that the working movement of the ground contact device is directed substantially vertically downwards in the direction of the soil to be processed. The working movement may have a beating, pounding or vibrating motion.
  • the implement is a rammer or a vibrating plate having a ground contact plate disposed on the ground contact device.
  • the ground contact plate may compress the soil in a stamping or vibrating manner.
  • the implement may be a breaker and the ground contact device may have a tool for tillage.
  • the breaker may be a big hammer that can be held by the operator above the ground to be worked.
  • the tool such as a chisel, edit the soil or break up.
  • the drive device can have an upper mass, a lower mass movable relative to the upper mass and movably coupled to the upper mass via a spring device, and a vibration excitation device for generating a relative movement between the upper mass and the lower mass on the tamper, the vibration plate or the hammer.
  • the ground contact device in the form of a ground contact plate or a tool can be arranged on the lower mass.
  • the drive device may have a crank mechanism for generating the relative movement between the upper mass and the lower mass.
  • the drive device can be designed, for example, with unbalanced shafts arranged on the lower mass for generating the relative movement of the lower mass relative to the upper mass.
  • the tool may comprise a percussion device with a percussion piston and a striker which can be acted upon by the percussion piston and which strikes against a breaking chisel serving as a tool.
  • the percussion piston can be driven by the drive device and displaceable in a striking movement with impact on the striker.
  • the percussion piston can be driven by a drive piston of the drive device via an air spring impact mechanism.
  • the working device may be a roller, wherein the ground contact device comprises a roller bandage and the soil can be compacted by rolling and / or vibration of the roller bandage.
  • the drive device may be operable by the electric motor in all of these embodiments.
  • 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).
  • SR motor switched reluctance motor
  • BDC motor DC motor
  • BLDC motor brushless DC motor
  • further motors may be provided, for example, an optionally or additionally operable internal combustion engine in the context of a hybrid drive of the drive device.
  • the electrical energy store provides the electrical energy required by the electric motor.
  • This may be an accumulator of a suitable power class, for example a lithium-ion or a lithium-polymer accumulator.
  • 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 form a commercially available unit with the housing, for example.
  • the cover can be arranged in the working position above the energy storage, ie on one side opposite to the ground. It can substantially completely or partially cover the energy store or its housing at least upwards. Consequently, the energy store can be substantially covered by the cover device when viewed from above on the implement. In particular, an upwardly directed upper side of the energy store or its housing can be covered by the covering device.
  • the cover can protect the energy storage from strong heating by sunlight when used in warm areas.
  • a shutdown of the working device can be prevented because of excessive operating temperature of the energy storage and thus the service life of the energy storage device and thus of the working device can be increased.
  • This overheating protection can also have a positive effect on the life of the energy storage device.
  • other cooling devices such as air cooling, may be operated at a lower power level or may be omitted altogether, saving costs and energy.
  • the cover can protect the energy storage from harmful mechanical influences in construction site operation, for example when used in a construction pit, where stones or other objects could fall on the device.
  • the cover can absorb an impact and protect the energy storage.
  • the implement may include a guide device for guiding the implement, wherein the energy store and the cover device may be disposed on the guide device.
  • the guide device may comprise a guide handle or guide bracket for holding the implement or a guide shaft for pulling and / or pushing the implement.
  • a guide handle for an operator and operating devices, levers and / or knobs may be provided on the guide device.
  • Welterhin can be provided on the implement a fastening device for attaching the guide device.
  • This may include a vibration isolation device with anti-sway devices such as spring devices or elastic buffers (eg, rubber buffers).
  • the guide device may comprise the entire assembly on which a grip zone is provided for the operator.
  • the arrangement of the energy storage device on the guide device can have a beneficial influence on the hand-arm vibrations on the guide device or the guide handle during the working movement of the working device.
  • By increased by the energy storage mass of the guide device pulse and Schwingungseinleltitch can be reduced by the oscillating lower or upper mass.
  • the energy storage is at the top of the implement, so on the opposite side to the ground contact device, various harmful influences particularly exposed, such as sunlight or impacts of falling objects.
  • various harmful influences particularly exposed such as sunlight or impacts of falling objects.
  • By covering the can Energy storage in this position are additionally protected. Risks that result from the exposed arrangement for the energy storage can be reduced or bypassed and the life or operating time of the energy storage can be increased.
  • the implement may comprise an electronic control device for controlling an operation of the drive device and / or the electric motor, wherein the cover device may be arranged in the working position above the control device and cover the control device.
  • an electronic control device makes it possible to use the operating current used on the work tool also for an electronic control of the working device, the drive device and / or the electric motor by the Bedlener. As a result, operating options and ease of use can be improved.
  • the control device is a complicated, delicate and expensive component, which must be protected against impulse starts in the working mode. Therefore, an arrangement on an upper side of the device is also advantageous for the control device, where it is remote from the ground contact device and protected from jumper lines.
  • the control device, as well as the energy storage can be arranged on the guide device. In this position, the control device may be protected by the cover device.
  • the covering device has a substantially flat cover plate, wherein the cover plate essentially covers an upper side of the housing of the energy store located in the working position on the energy store and / or a top side of the control device located in the working position at the top of the control device.
  • the substantially flat, so in many areas flat or flat designed cover plate can, without requiring significant additional space to effectively protect the components mentioned, for example, from sunlight or from falling objects.
  • the upper part of the working device can be protected by the cover plate so that there are only a few storage and Eindring mecanickelten for dust and dirt.
  • the cover plate can improve the appearance or the design of the implement.
  • the covering device may have a material which protects against heat radiation and / or a heat radiation-reflecting coating.
  • a material can be chosen that does not pass the heat radiating on top to the lower surface.
  • a reflective layer or a reflective coating can be applied, which reflects the heat radiation.
  • the cover device may have a material that protects against stone chipping.
  • a material such as, for example, a metal having a suitable strength such as can be chosen, which can absorb the impact of a falling rock crack and prevent passage to the energy storage or for the control. This allows effective protection against falling objects.
  • the covering device can significantly improve the design.
  • the color of the plastic, the coating or the coating can be selected such that the plastic substantially reflects the heat radiation.
  • the covering device may have a pivotable part, wherein in a pivoting position of the pivotable part of the energy storage device can be removed from a receiving device.
  • the pivotable part can be designed as a flap and pivotally connected to other components of the covering device via a hinge. This allows the cover device to be opened, thereby making part of the covered area accessible to the operator.
  • the energy storage can be removed and replaced after opening by the operator or connected to a charger.
  • the energy storage can be fixed or positioned by engaging the pivotable part.
  • a display area of the control device can be made accessible by the unfolding. This allows effective protection of the energy storage device and the control device when it is closed Flap and at the same time a good accessibility of these components for operating and maintenance purposes.
  • the covering device can have a removable part, wherein the energy store can be removed from the receiving device when the removable part of the covering device is removed.
  • the removable part can be designed as a lid and, for example, be latched to the cover.
  • the cover In the latched position, the cover can protect the energy store and / or the control device and fix it, if necessary.
  • the covering device may have a cooling air flow guide for guiding a cooling air flow along the energy store and / or along the control device.
  • the cover device may be designed as a hood, which form a flow channel for the cooling air and / or limit. The cooling air flow can be guided under the cover device along the energy store and / or the control device and effectively cool it.
  • the cover device may have at least one opening for discharging warm air located under the cover device.
  • the covering device may have a plurality of openings or ventilation slots or a ventilation grille.
  • a reflective layer on the ventilation grille By a reflective layer on the ventilation grille, a reflection of the heat radiation can be achieved in addition.
  • the operating heat of the energy store which may arise, for example, when providing or receiving electrical energy, can be dissipated. Overheating of the energy storage, heat accumulation or shutdown of the implement can be prevented.
  • the covering device is attached to the housing of the energy store and / or a housing of the control device or attachable. This makes it possible to arrange the cover device targeted to protect the energy storage or the control device.
  • a covering device can be retrofitted, for example, in connection with new energy storage or accumulators for such tools, offered and thus retrofitted without much installation effort.
  • FIG. 1 shows a rammer with a partially pivotable cover device for protecting an energy store and a control device.
  • Fig. 1 shows schematically in a side sectional view a rammer 1 with an upper mass 2 and a relatively movable to the upper mass 2 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.
  • the crank mechanism By the crank mechanism, the upper mass 2 and the lower mass 3 can be offset from one another in an oscillating relative movement, by which the ground contact plate 4 is forced into a pounding working movement.
  • a bottom region 5 situated below the rammer 1 and the ground contact plate 4 can be compressed in a pest-forming manner.
  • a guide bracket 6 is provided on which, for example, an operator handle can be arranged.
  • the guide bracket 6 is arranged on the upper mass 2. It may be decoupled by a vibration decoupling device 6a, such as a rubber buffer, from vibrations of the upper mass 2 during the working movement.
  • the guide bracket 6 a provided for supplying the electric motor electrical energy storage 7 is arranged.
  • the energy store 7 By arranging the energy store 7 on the guide bracket 6, the relative mass of the guide bracket 6 in relation to the upper mass 2 and the lower mass 3 can be increased. This allows a reduction in the vibrations introduced by the working movement of the rammer 1 in the guide bracket 6. Consequently, such vibrations only attenuated introduced to the guide bracket 6 and act only weakened on the energy storage 7, the operator handle and the arm of the operator. This increases both the ease of use and the life of the energy storage 7.
  • an electronic control device 8 is arranged on the guide bracket. This makes it possible to direct control input from the operator with little cabling effort via the control device 8 to the drive device. Furthermore, the control device 8 can be supplied by the energy store 7 with only a small amount of wiring.
  • a cover 9 is provided, which in the shown working position of the rammer 1 above the energy storage 7, ie from
  • a cooling air flow generated by a fan device may be directed below the capping device 9 along the energy storage 7 and the control device 8, as shown by the dashed arrow.
  • a fan device may be directed below the capping device 9 along the energy storage 7 and the control device 8, as shown by the dashed arrow.
  • the cooling air flow should be led away by the operator.
  • the covering device 9 has a part 10 which can be swiveled along the curved arrow and which is connected to a fixed component of the covering device 9 via a hinge 11.
  • the pivotal part 10 allows the operator to unfold the cover 9 and to have easy access to the energy storage 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Soil Working Implements (AREA)

Abstract

The invention relates to a piece of equipment (1) which has a ground contact device (4) for working on a ground region (5) located below the ground contact device (4) in the working position of the piece of equipment (1), a driving device which can be operated by an electric motor in order to produce a working movement of the ground contact device (4), an electrical energy accumulator (7), enclosed by a housing, for supplying the electric motor with electrical energy, and a covering device (9) for covering the housing and thus the energy accumulator (7), which covering device is arranged above the energy accumulator (7) in the working position. The piece of equipment (1) may for example be a tamper, a vibration plate, a roller or a breaker.

Description

Elektrowerkzeug mit Schutzhaube Beschreibung  Power tool with protective cover Description
Die Erfindung betrifft gemäß Patentanspruch 1 ein Arbeitsgerät zum Bearbeiten eines Bodenbereichs, beispielsweise einen Stampfer, eine Vibrationsplatte, eine Walze oder einen Aufbruchhammer. The invention relates according to claim 1, a working device for processing a bottom portion, such as a rammer, a vibrating plate, a roller or a breaker.
Arbeitsgeräte zum Bearbeiten des Bodens werden zunehmend mit Elektromotoren angeboten, wobei die Elektromotoren aus am Arbeitsgerät mitgeführten Akkumulatoren mit elektrischer Energie versorgbar sind. Wegen des hohen Leistungsbe- darfs weisen die Akkumulatoren ein großes Leistungsvermögen auf und sind daher wertvolle bzw. teure Komponenten. Um eine gute Akzeptanz derartiger Arbeitsgeräte zu erreichen, ist es daher notwendig, eine hohe Lebensdauer und Einsatzzelt der Akkumulatoren sicherzustellen. Der Erfindung liegt die Aufgabe zugrunde, ein aus einem elektrischen Energiespeicher gespeistes Arbeitsgerät zur Bodenbearbeitung anzugeben, das eine lange Lebensdauer bzw. Einsatzzeit des elektrischen Energiespeichers begünstigt. Work tools for working the soil are increasingly being offered with electric motors, wherein the electric motors can be supplied with electrical energy from accumulators entrained on the implement. Because of the high power requirement, the batteries have a high capacity and are therefore valuable or expensive components. In order to achieve a good acceptance of such tools, it is therefore necessary to ensure a long life and use tent of the accumulators. The invention has for its object to provide a powered from an electrical energy storage implement for tillage, which favors a long life or service life of the electrical energy storage.
Diese Aufgabe wird durch ein Arbeitsgerät zur Bodenverdichtung gemäß Patent- anspruch 1 gelöst. Welterentwicklungen sind den abhängigen Ansprüchen zu entnehmen. This object is achieved by a working device for soil compaction according to patent claim 1. World developments are to be taken from the dependent claims.
Ein Arbeitsgerät weist eine Bodenkontaktvorrichtung zum Bearbeiten eines in einer Arbeitsstellung des Arbeitsgeräts unterhalb der Bodenkontaktvorrichtung be- findlichen Bodenbereichs, eine durch einen Elektromotor betreibbare Antriebsvorrichtung zum Erzeugen einer Arbeitsbewegung der Bodenkontaktvorrichtung, einen von einem Gehäuse umschlossenen elektrischen Energiespeicher zum Versorgen des Elektromotors mit elektrischer Energie und eine in der Arbeitsstellung oberhalb des Energiespeichers angeordnete Abdeckvorrichtung zum Abdecken des Gehäuses und damit des Energiespeichers auf. An implement has a ground contact device for processing a ground area located below the ground contact device in a working position of the implement, a drive device for generating a working movement of the ground contact device, an electrical energy store enclosed by a housing for supplying the electric motor with electrical energy and a motor vehicle arranged in the working position above the energy storage cover device for covering the housing and thus the energy storage.
Das Arbeitsgerät kann zur Bodenverdichtung und/oder zur Bodenbearbeitung dienen. Arbeltsgeräte zur Bodenverdichtung sind beispielsweise Stampfer, Vibrationsplatten oder Walzen. Arbeitsgeräte zur Bodenbearbeitung sind beispielsweise Groß- bzw. Aufbruchhämmer zur Bearbeitung bzw. zum Aufbrechen eines Bodenbereichs. In einer Ausführungsform kann das Arbeitsgerät eine Masse von beispielsweise wenigstens 15 kg aufweisen. Es kann durch einen Bediener derart in der Arbeitsstellung haltbar sein, dass die Arbeitsbewegung der Bodenkontaktvorrichtung im Wesentlichen senkrecht nach unten in Richtung des zu bearbeitenden Bodens gerichtet ist. Die Arbeitsbewegung kann eine schlagende, stampfende oder vibrierende Bewegung aufweisen. The implement can be used for soil compaction and / or tillage. Work tools for soil compaction are, for example, rammers, vibratory plates or rollers. Tools for tillage are, for example, large or Aufbruchhämmer for processing or breaking a floor area. In one embodiment, the implement may have a mass of, for example, at least 15 kg. It may be durable by an operator in the working position, that the working movement of the ground contact device is directed substantially vertically downwards in the direction of the soil to be processed. The working movement may have a beating, pounding or vibrating motion.
In einer Ausführungsform ist das Arbeitsgerät ein Stampfer oder eine Vibrationsplatte mit einer an der Bodenkontaktvorrichtung angeordneten Bodenkontaktplat- te. In dieser Ausführungsform kann die Bodenkontaktplatte stampfend bzw. vibrierend den Boden verdichten. In one embodiment, the implement is a rammer or a vibrating plate having a ground contact plate disposed on the ground contact device. In this embodiment, the ground contact plate may compress the soil in a stamping or vibrating manner.
In einer weiteren Ausführungsform kann das Arbeitsgerät ein Aufbruchhammer sein und die Bodenkontaktvorrichtung ein Werkzeug zur Bodenbearbeitung auf- weisen. Der Aufbruchhammer kann ein Großhammer sein, der durch den Bediener über dem zu bearbeitenden Boden haltbar ist. Dabei kann das Werkzeug, wie beispielsweise ein Meißel, den Boden bearbeiten bzw. aufbrechen. In another embodiment, the implement may be a breaker and the ground contact device may have a tool for tillage. The breaker may be a big hammer that can be held by the operator above the ground to be worked. In this case, the tool, such as a chisel, edit the soil or break up.
An dem Stampfer, der Vibrationsplatte bzw. dem Hammer kann die Antriebsvor- richtung eine Obermasse, eine relativ zur Obermasse bewegliche und mit der O- bermasse über eine Federeinrichtung beweglich gekoppelte Untermasse und eine Schwingungserregungsvorrichtung zum Erzeugen einer Relativbewegung zwischen der Obermasse und der Untermasse aufweisen. Die Bodenkontaktvorrichtung in Form einer Bodenkontaktplatte oder eines Werkzeugs kann an der Untermasse angeordnet sein. The drive device can have an upper mass, a lower mass movable relative to the upper mass and movably coupled to the upper mass via a spring device, and a vibration excitation device for generating a relative movement between the upper mass and the lower mass on the tamper, the vibration plate or the hammer. The ground contact device in the form of a ground contact plate or a tool can be arranged on the lower mass.
Im Falle des Stampfers kann die Antriebsvorrichtung beispielsweise einen Kurbeltrieb zum Erzeugen der Relativbewegung zwischen der Obermasse und der Untermasse aufweisen. Bei einer Vibrationsplatte kann die Antriebsvorrichtung bei- spielsweise mit an der Untermasse angeordneten Unwuchtwellen zum Erzeugen der Relativbewegung der Untermasse relativ zur Obermasse ausgebildet sein. In the case of the rammer, for example, the drive device may have a crank mechanism for generating the relative movement between the upper mass and the lower mass. In the case of a vibration plate, the drive device can be designed, for example, with unbalanced shafts arranged on the lower mass for generating the relative movement of the lower mass relative to the upper mass.
Im Falle des Aufbruchhammers kann das Werkzeug eine Schlagvorrichtung mit einem Schlagkolben und einem durch den Schlagkolben beaufschlagbaren Döpper aufweisen, der gegen einen als Werkzeug dienenden Aufbruchmeißel schlägt. Der Schlagkolben kann durch die Antriebsvorrichtung antreibbar und in eine Schlagbewegung mit Aufschlag auf den Döpper versetzbar sein. Beispielsweise kann der Schlagkolben von einem Antriebskolben der Antriebsvorrichtung über ein Luftfederschlagwerk antreibbar sein. In einer weiteren Ausführungsform kann das Arbeitsgerät eine Walze sein, wobei die Bodenkontaktvorrichtung eine Walzenbandage aufweist und der Boden durch Abrollen und/oder Vibration der Walzenbandage verdichtet werden kann. In the case of the breaker hammer, the tool may comprise a percussion device with a percussion piston and a striker which can be acted upon by the percussion piston and which strikes against a breaking chisel serving as a tool. The percussion piston can be driven by the drive device and displaceable in a striking movement with impact on the striker. For example, the percussion piston can be driven by a drive piston of the drive device via an air spring impact mechanism. In a further embodiment, the working device may be a roller, wherein the ground contact device comprises a roller bandage and the soil can be compacted by rolling and / or vibration of the roller bandage.
Die Antriebsvorrichtung kann bei allen diesen Ausführungsformen durch den E- lektromotor betreibbar sein. Bei dem Elektromotor kann es sich um einen Universalmotor, einen Induktionsmotor, einen Switched-Reluctance Motor (SR-Motor), einen Gleichstrommotor (BDC-Motor) oder einen bürstenlosen Gleichstrommotor (BLDC-Motor) handeln . Neben dem Elektromotor können weitere Motoren vorgesehen sein, beispielsweise ein wahlweise oder zusätzlich betreibbarer Verbrennungsmotor im Rahmen eines Hybridantriebs der Antriebsvorrichtung. The drive device may be operable by the electric motor in all of these embodiments. 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). In addition to the electric motor further motors may be provided, for example, an optionally or additionally operable internal combustion engine in the context of a hybrid drive of the drive device.
Der elektrische Energiespeicher stellt die von dem Elektromotor benötigte elektri- sehe Energie bereit. Es kann sich hierbei um einen Akkumulator einer geeigneten Leistungsklasse handeln, beispielsweise einen Lithium-Ionen- oder einen Lithium- Polymer-Akkumulator. Der Energiespeicher kann elektrochemische Zellen aufweisen und von einem Gehäuse, beispielsweise einem Kunststoffgehäuse, umschlossen sein. Das Gehäuse kann die elektrochemischen Zellen kapseln und elektrische Anschlussvorrichtungen sowie gegebenenfalls Bedien- und Anzeigeeinrichtungen aufweisen. Der Energiespeicher kann mit dem Gehäuse beispielsweise eine handelsübliche Einheit bilden. The electrical energy store provides the electrical energy required by the electric motor. This may be an accumulator of a suitable power class, for example a lithium-ion or a lithium-polymer accumulator. 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 form a commercially available unit with the housing, for example.
Die Abdeckvorrichtung kann in der Arbeitsstellung oberhalb des Energiespeichers angeordnet sein, also an einer Seite entgegengesetzt zum Boden. Sie kann den Energiespeicher bzw. sein Gehäuse im Wesentlichen ganz oder teilweise zumindest nach oben hin abdecken. Folglich kann der Energiespeicher bei einer Aufsicht auf das Arbeitsgerät von oben im Wesentlichen durch die Abdeckvorrichtung überdeckt sein. Insbesondere kann eine nach oben gerichtete Oberseite des Ener- giespeichers bzw. seines Gehäuses durch die Abdeckvorrichtung abgedeckt sein. The cover can be arranged in the working position above the energy storage, ie on one side opposite to the ground. It can substantially completely or partially cover the energy store or its housing at least upwards. Consequently, the energy store can be substantially covered by the cover device when viewed from above on the implement. In particular, an upwardly directed upper side of the energy store or its housing can be covered by the covering device.
Durch das Abdecken des Energiespeichers kann dieser im rauen Baustellenbetrieb effektiv geschützt werden. Beispielsweise kann die Abdeckvorrichtung den Energiespeicher vor einer starken Erwärmung durch Sonneneinstrahlung beim Einsatz in warmen Gegenden schützen. Hierdurch kann ein Abschalten des Arbeitsgeräts wegen überhöhter Betriebstemperatur des Energiespeichers verhindert und so die Einsatzzeit des Energiespeichers und damit des Arbeitsgeräts erhöht werden. Dieser Überhitzungsschutz kann sich auch positiv auf die Lebensdauer des Energiespeichers auswirken. Bei Vorsehen der Abdeckvorrichtung können weitere Kühlvorrichtungen, wie beispielsweise eine Luftkühlung, auf einer niedrigeren Leistungsstufe betrieben oder gegebenenfalls ganz weggelassen werden, was Kosten und Energie spart. By covering the energy storage, it can be effectively protected in rough construction site operation. For example, the cover can protect the energy storage from strong heating by sunlight when used in warm areas. As a result, a shutdown of the working device can be prevented because of excessive operating temperature of the energy storage and thus the service life of the energy storage device and thus of the working device can be increased. This overheating protection can also have a positive effect on the life of the energy storage device. By providing the capping device, other cooling devices, such as air cooling, may be operated at a lower power level or may be omitted altogether, saving costs and energy.
Weiterhin kann die Abdeckvorrichtung den Energiespeicher vor schädigenden mechanischen Einflüssen im Baustellenbetrieb schützen, beispielsweise beim Einsatz in einem Baugraben, wo Steine oder andere Gegenstände auf das Gerät herabfallen könnten. In diesem Fall kann die Abdeckvorrichtung einen Aufprall aufnehmen und den Energiespeicher schützen. Furthermore, the cover can protect the energy storage from harmful mechanical influences in construction site operation, for example when used in a construction pit, where stones or other objects could fall on the device. In this case, the cover can absorb an impact and protect the energy storage.
In einer Ausführungsform kann das Arbeitsgerät eine Führungsvorrichtung zum Führen des Arbeitsgeräts aufweisen, wobei der Energiespeicher und die Abdeckvorrichtung an der Führungsvorrichtung angeordnet sein können. In one embodiment, the implement may include a guide device for guiding the implement, wherein the energy store and the cover device may be disposed on the guide device.
Die Führungsvorrichtung kann einen Führungsgriff oder Führungsbügel zum Halten des Arbeitsgeräts oder eine Führungsdeichsel zum Ziehen und/ oder Schieben des Arbeitsgeräts aufweisen. An der Führungsvorrichtung können einen Führungshandgriff für einen Bediener sowie Bedienvorrichtungen, Stellhebel und/ oder Bedienknöpfe vorgesehen sein. Welterhin kann eine Befestigungsvorrichtung zum Befestigen der Führungsvorrichtung am Arbeitsgerät vorgesehen sein. Diese kann eine Schwingungsentkopplungsvorrichtung mit Schwlngungs- dämpfungseinrlchtungen wie beispielsweise Federeinrichtungen oder elastischen Puffern (z. B. Gummipuffer) aufweisen. Hierdurch können die Hand-Arm- Vibrationen des Bedieners im Arbeitsbetrieb reduziert und ein ruhiges Führen ermöglicht werden. Die Führungsvorrichtung kann die gesamte Baugruppe umfassen, an der eine Griffzone für den Bediener vorgesehen ist. The guide device may comprise a guide handle or guide bracket for holding the implement or a guide shaft for pulling and / or pushing the implement. On the guide device, a guide handle for an operator and operating devices, levers and / or knobs may be provided. Welterhin can be provided on the implement a fastening device for attaching the guide device. This may include a vibration isolation device with anti-sway devices such as spring devices or elastic buffers (eg, rubber buffers). As a result, the hand-arm vibrations of the operator can be reduced during operation and a smooth leadership possible. The guide device may comprise the entire assembly on which a grip zone is provided for the operator.
Das Anordnen des Energiespeichers an der Führungsvorrichtung kann bei der Arbeitsbewegung des Arbeitsgeräts einen vorteilhaften Einfluss auf die Hand-Arm- Vibrationen an der Führungsvorrichtung bzw. dem Führungshandgriff haben. Durch die durch den Energiespeicher erhöhte Masse der Führungsvorrichtung können Impuls- und Schwingungseinleltungen durch die schwingende Unter- bzw. Obermasse reduziert werden. The arrangement of the energy storage device on the guide device can have a beneficial influence on the hand-arm vibrations on the guide device or the guide handle during the working movement of the working device. By increased by the energy storage mass of the guide device pulse and Schwingungseinleltungen can be reduced by the oscillating lower or upper mass.
Allerdings ist der Energiespeicher oben am Arbeitsgerät, also an der zur Bodenkontaktvorrichtung entgegengesetzten Seite, verschiedenen schädigenden Einflüssen besonders ausgesetzt, beispielsweise der Sonneneinstrahlung oder Einschlägen von herabfallenden Gegenständen. Durch die Abdeckvorrichtung kann der Energiespeicher in dieser Position zusätzlich geschützt werden. Risiken, die sich aus der exponierten Anordnung für den Energiespeicher ergeben, können vermindert bzw. umgangen und die Lebens- bzw. Betriebsdauer des Energiespeichers kann erhöht werden. However, the energy storage is at the top of the implement, so on the opposite side to the ground contact device, various harmful influences particularly exposed, such as sunlight or impacts of falling objects. By covering the can Energy storage in this position are additionally protected. Risks that result from the exposed arrangement for the energy storage can be reduced or bypassed and the life or operating time of the energy storage can be increased.
In einer weiteren Ausführungsform kann das Arbeitsgerät eine elektronische Steuerungsvorrichtung zum Steuern eines Betriebs der Antriebsvorrichtung und/oder des Elektromotors aufweisen, wobei die Abdeckvorrichtung In der Arbeitsstellung oberhalb der Steuerungsvorrichtung angeordnet sein und die Steuerungsvorrichtung abdecken kann. In a further embodiment, the implement may comprise an electronic control device for controlling an operation of the drive device and / or the electric motor, wherein the cover device may be arranged in the working position above the control device and cover the control device.
Das Vorsehen einer elektronischen Steuerungsvorrichtung ermöglicht es, den am Arbeltsgerät genutzten Betriebsstrom auch für eine elektronische Steuerung des Arbeitsgeräts, der Antriebsvorrichtung und /oder des Elektromotors durch den Bedlener zu nutzen. Hierdurch können Bedienmöglichkeiten und Bedienkomfort verbessert werden. Allerdings stellt die Steuerungsvorrichtung ein kompliziertes, anfälliges und darüber hinaus teures Bauteil dar, welches vor Impulseinleitungen Im Arbeltsbetrieb zu schützen ist. Daher ist auch für die Steuerungsvorrichtung eine Anordnung an einer Oberseite des Geräts vorteilhaft, wo sie entfernt von der Bodenkontaktvorrichtung und geschützt vor Stoßelnleitungen ist. Insbesondere kann auch die Steuerungsvorrichtung, ebenso wie der Energiespeicher, an der Führungsvorrichtung angeordnet sein. In dieser Lage kann die Steuerungsvorrichtung durch die Abdeckvorrichtung geschützt sein. The provision of an electronic control device makes it possible to use the operating current used on the work tool also for an electronic control of the working device, the drive device and / or the electric motor by the Bedlener. As a result, operating options and ease of use can be improved. However, the control device is a complicated, delicate and expensive component, which must be protected against impulse starts in the working mode. Therefore, an arrangement on an upper side of the device is also advantageous for the control device, where it is remote from the ground contact device and protected from jumper lines. In particular, the control device, as well as the energy storage, can be arranged on the guide device. In this position, the control device may be protected by the cover device.
In einer Ausführungsform weist die Abdeckvorrichtung eine im Wesentlichen flache Abdeckplatte auf, wobei die Abdeckplatte eine in der Arbeitsstellung oben am Energiespeicher befindliche Oberseite des Gehäuses des Energiespeichers und/oder eine in der Arbeitsstellung oben an der Steuerungsvorrichtung befindliche Oberseite der Steuerungsvorrichtung im Wesentlichen abdeckt. In one embodiment, the covering device has a substantially flat cover plate, wherein the cover plate essentially covers an upper side of the housing of the energy store located in the working position on the energy store and / or a top side of the control device located in the working position at the top of the control device.
Die im Wesentlichen flache, also in weiten Teilen flächig bzw. eben gestaltete Abdeckplatte kann, ohne nennenswerten zusätzlichen Bauraum zu benötigen, die genannten Komponenten effektiv schützen, beispielsweise vor Sonneneinstrahlung oder vor herab fallenden Gegenständen. The substantially flat, so in many areas flat or flat designed cover plate can, without requiring significant additional space to effectively protect the components mentioned, for example, from sunlight or from falling objects.
Welterhin kann die Oberselte des Arbeitsgeräts durch die Abdeckplatte derart geschützt sein, dass nur wenige Einlagerungs- und Eindringmöglichkelten für Staub und Schmutz bestehen. Das Arbeltsgerät und sein Inneres, insbesondere die Bauräume, in welchen auch der Energiespeicher und/oder die Steuerungsvorrichtung angeordnet sind, werden daher vor Verschmutzungen geschützt. Zudem kann die Abdeckplatte die Anmutung bzw. das Design des Arbeitsgeräts verbessern. Welterhin, the upper part of the working device can be protected by the cover plate so that there are only a few storage and Eindringmöglichkelten for dust and dirt. The work tool and its interior, in particular the installation spaces, in which also the energy storage and / or the control device are therefore protected from contamination. In addition, the cover plate can improve the appearance or the design of the implement.
In einer weiteren Ausführungsform kann die Abdeckvorrichtung ein vor Wärme- einstrahlung schützendes Material und/oder eine Wärmeeinstrahlung reflektierende Beschlchtung aufweisen. Beispielsweise kann ein Material gewählt werden, das die an der Oberseite einstrahlende Wärme nicht an die Unterselte weiterleitet. Alternativ oder zusätzlich kann eine reflektierende Schicht bzw. eine reflektierende Lackierung aufgebracht sein, die die Wärmeeinstrahlung reflektiert. In a further embodiment, the covering device may have a material which protects against heat radiation and / or a heat radiation-reflecting coating. For example, a material can be chosen that does not pass the heat radiating on top to the lower surface. Alternatively or additionally, a reflective layer or a reflective coating can be applied, which reflects the heat radiation.
In einer anderen Ausführungsform kann die Abdeckvorrichtung ein vor Steinschlag schützendes Material aufweisen. Insbesondere kann ein Material wie beispielsweise ein Metall mit einer geeigneten Festigkeit wie gewählt werden, das den Aufprall eines herabfallenden Gesteinsbrockens aufnehmen kann und eine Durch- leitung zum Energiespeicher bzw. zur Steuerung verhindert. Dies ermöglicht einen effektiven Schutz vor herabfallenden Gegenständen. In another embodiment, the cover device may have a material that protects against stone chipping. In particular, a material such as, for example, a metal having a suitable strength such as can be chosen, which can absorb the impact of a falling rock crack and prevent passage to the energy storage or for the control. This allows effective protection against falling objects.
Ebenso ist auch eine Gestaltung der Abdeckvorrichtung aus einem Kunststoff mit geeigneter Festigkeit möglich. Hierdurch besteht ein großer gestalterischer Frel- räum, sodass die Abdeckvorrichtung das Design maßgeblich verbessern kann. Die Farbe des Kunststoffs, die Beschichtung oder die Lackierung können derart gewählt sein, dass der Kunststoff die Wärmeeinstrahlung im Wesentlichen reflektiert. In einer weiteren Ausführungsform kann die Abdeckvorrichtung einen schwenkbaren Teil aufweisen, wobei in einer Schwenkstellung des schwenkbaren Teils der Energiespeicher aus einer Aufnahmevorrichtung entnehmbar ist. Likewise, a design of the cover of a plastic with suitable strength is possible. As a result, there is a great deal of design freedom, so that the covering device can significantly improve the design. The color of the plastic, the coating or the coating can be selected such that the plastic substantially reflects the heat radiation. In a further embodiment, the covering device may have a pivotable part, wherein in a pivoting position of the pivotable part of the energy storage device can be removed from a receiving device.
Beispielsweise kann der schwenkbare Teil als Klappe gestaltet und über ein Scharnier mit anderen Bestandteilen der Abdeckvorrichtung schwenkbar verbunden sein. Dies ermöglicht ein Aufklappen der Abdeckvorrichtung, wodurch ein Teil des abgedeckten Bereichs für den Bediener zugänglich wird. Der Energiespeicher kann nach dem Aufklappen durch den Bediener entnommen und ausgewechselt oder mit einem Ladegerät verbunden werden. Zudem kann der Energiespeicher durch Einrasten des schwenkbaren Teils fixiert bzw. positioniert werden. Weiterhin kann ein Anzeigebereich der Steuerungsvorrichtung durch das Aufklappen zugänglich bzw. einsehbar gemacht werden. Dies ermöglicht einen effektiven Schutz des Energiespeichers und der Steuerungsvorrichtung bei geschlossener Klappe und gleichzeitig eine gute Zugänglichkeit dieser Komponenten zu Bedien- und Wartungszwecken. For example, the pivotable part can be designed as a flap and pivotally connected to other components of the covering device via a hinge. This allows the cover device to be opened, thereby making part of the covered area accessible to the operator. The energy storage can be removed and replaced after opening by the operator or connected to a charger. In addition, the energy storage can be fixed or positioned by engaging the pivotable part. Furthermore, a display area of the control device can be made accessible by the unfolding. This allows effective protection of the energy storage device and the control device when it is closed Flap and at the same time a good accessibility of these components for operating and maintenance purposes.
Zudem ist es möglich, den schwenkbaren Teil in Richtung der Sonneneinstrahlung auszurichten, um in einer Arbeitsposition den Energiespeicher und gegebenenfalls die Steuerung bestmöglich vor der Strahlung zu schützen. In addition, it is possible to align the pivotable part in the direction of solar radiation in order to best protect the energy store and possibly the controller from the radiation in a working position.
In einer weiteren Ausführungsform kann die Abdeckvorrichtung einen entnehmbaren Teil aufweisen, wobei der Energiespeicher aus der Aufnahmevorrichtung ent- nehmbar ist, wenn der entnehmbare Teil der Abdeckvorrichtung entnommen ist. In a further embodiment, the covering device can have a removable part, wherein the energy store can be removed from the receiving device when the removable part of the covering device is removed.
Der entnehmbare Teil kann als Deckel gestaltet und beispielsweise an der Abdeckvorrichtung einrastbar sein . In der eingerasteten Position kann der Deckel den Energiespeicher und/ oder die Steuerungsvorrichtung schützen und gegebe- nenfalls fixieren. Nach Entnahme des Deckels können z.B. die Aufnahmevorrichtung für den Energiespeicher und/ oder der Anzeigeberelch der Steuerungsvorrichtung für den Bediener zu Bedien- bzw. Wartungszwecken zugänglich sein, wie bereits für die Klappe beschrieben. In einer weiteren Ausführungsform kann die Abdeckvorrichtung eine Kühlluftstromführung zum Führen eines Kühlluftstroms entlang dem Energiespeicher und/oder entlang der Steuerungsvorrichtung aufweisen. Beispielswelse kann die Abdeckvorrichtung als Haube gestaltet sein, die einen Strömungskanal für die Kühlluft ausbilden und/ oder begrenzen kann. Der Kühlluftstrom kann unter der Abdeckvorrichtung entlang dem Energiespeicher und/ oder der Steuerungsvorrichtung geführt werden und diese effektiv kühlen. The removable part can be designed as a lid and, for example, be latched to the cover. In the latched position, the cover can protect the energy store and / or the control device and fix it, if necessary. After removal of the lid, e.g. the receiving device for the energy storage and / or the Anzeigeberelch the control device for the operator to be accessible for operating or maintenance purposes, as already described for the flap. In a further embodiment, the covering device may have a cooling air flow guide for guiding a cooling air flow along the energy store and / or along the control device. Beispielswelse the cover device may be designed as a hood, which form a flow channel for the cooling air and / or limit. The cooling air flow can be guided under the cover device along the energy store and / or the control device and effectively cool it.
In einer weiteren Ausführungsform kann die Abdeckvorrichtung wenigstens eine Öffnung zum Abführen von unter der Abdeckvorrichtung befindlicher Warmluft aufweisen. Beispielsweise kann die Abdeckvorrichtung mehrere Öffnungen oder Lüftungsschlitze bzw. ein Lüftungsgitter aufweisen. Durch eine reflektierende Schicht am Lüftungsgitter kann zusätzlich eine Reflexion der Wärmeeinstrahlung erreicht werden. Die Betriebswärme des Energiespeichers, die beispielsweise beim Bereitstellen oder Aufnehmen von elektrischer Energie entstehen kann, kann ab- geführt werden. Ein Überhitzen des Energiespeichers, ein Wärmestau bzw. ein Abschalten des Arbeitsgeräts kann verhindert werden. In a further embodiment, the cover device may have at least one opening for discharging warm air located under the cover device. For example, the covering device may have a plurality of openings or ventilation slots or a ventilation grille. By a reflective layer on the ventilation grille, a reflection of the heat radiation can be achieved in addition. The operating heat of the energy store, which may arise, for example, when providing or receiving electrical energy, can be dissipated. Overheating of the energy storage, heat accumulation or shutdown of the implement can be prevented.
In einer weiteren Ausführungsform ist die Abdeckvorrichtung an dem Gehäuse des Energiespeichers und/oder einem Gehäuse der Steuerungsvorrichtung befestigt bzw. befestigbar. Dies ermöglicht es, die Abdeckvorrichtung zielgerichtet zum Schutz des Energiespeichers bzw. der Steuerungsvorrichtung anzuordnen. Eine derartige Abdeckvorrichtung kann nachrüstbar, zum Beispiel in Verbindung mit neuen Energiespeichern bzw. Akkumulatoren für derartige Arbeitsgeräte, angebo- ten und folglich ohne großen Montageaufwand nachgerüstet werden. In a further embodiment, the covering device is attached to the housing of the energy store and / or a housing of the control device or attachable. This makes it possible to arrange the cover device targeted to protect the energy storage or the control device. Such a covering device can be retrofitted, for example, in connection with new energy storage or accumulators for such tools, offered and thus retrofitted without much installation effort.
Diese und weitere Merkmale der Erfindung werden nachfolgend anhand von Beispielen unter Zuhilfenahme der begleitenden Figuren näher erläutert. Es zeigt: Fig. 1 einen Stampfer mit einer teilweise schwenkbaren Abdeckvorrichtung zum Schutz eines Energiespeichers und einer Steuerungsvorrichtung. These and further features of the invention are explained in more detail below by means of examples with the aid of the accompanying figures. 1 shows a rammer with a partially pivotable cover device for protecting an energy store and a control device.
Fig. 1 zeigt schematisch in einer seitlichen Schnittansicht einen Stampfer 1 mit einer Obermasse 2 und einer zu der Obermasse 2 relativ bewegbaren Untermasse 3. Die Untermasse 3 weist einen Stampffuß mit einer als Bodenkontaktvorrichtung dienenden Bodenkontaktplatte 4 auf. Die Obermasse 2 umfasst unter anderem eine Antriebsvorrichtung (nicht gezeigt) mit einem Elektromotor (nicht gezeigt), welcher einen mit der Untermasse 3 verbundenen Kurbeltrieb (nicht ge- zeigt) antreibt. Durch den Kurbeltrieb können die Obermasse 2 und die Untermasse 3 in eine oszillierende Relativbewegung zueinander versetzt werden, durch die die Bodenkontaktplatte 4 in eine stampfende Arbeitsbewegung gezwungen wird. Durch das Stampfen kann in der gezeigten, aufrechten Arbeitsstellung ein unterhalb des Stampfers 1 und der Bodenkontaktplatte 4 befindlicher Bodenbe- reich 5 stampfend verdichtet werden. Fig. 1 shows schematically in a side sectional view a rammer 1 with an upper mass 2 and a relatively movable to the upper mass 2 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. By the crank mechanism, the upper mass 2 and the lower mass 3 can be offset from one another in an oscillating relative movement, by which the ground contact plate 4 is forced into a pounding working movement. As a result of the pounding, in the shown upright working position a bottom region 5 situated below the rammer 1 and the ground contact plate 4 can be compressed in a pest-forming manner.
Zum Führen des Stampfers 1 durch einen Bediener ist ein Führungsbügel 6 vorgesehen, an welchem beispielsweise ein Bedienerhandgriff angeordnet sein kann . Der Führungsbügel 6 ist an der Obermasse 2 angeordnet. Er kann durch eine Schwingungsentkopplungsvorrichtung 6a wie beispielsweise einen Gummipuffer von Schwingungen der Obermasse 2 während der Arbeitsbewegung entkoppelt sein. For guiding the rammer 1 by an operator, a guide bracket 6 is provided on which, for example, an operator handle can be arranged. The guide bracket 6 is arranged on the upper mass 2. It may be decoupled by a vibration decoupling device 6a, such as a rubber buffer, from vibrations of the upper mass 2 during the working movement.
An dem Führungsbügel 6 ist ein zum Versorgen des Elektromotors vorgesehener elektrischer Energiespeicher 7 angeordnet. Durch das Anordnen des Energiespeichers 7 an dem Führungsbügel 6 kann die relative Masse des Führungsbügels 6 im Verhältnis zur Obermasse 2 bzw. zur Untermasse 3 erhöht werden. Dies ermöglicht eine Reduzierung der durch die Arbeitsbewegung des Stampfers 1 in den Führungsbügel 6 eingeleiteten Vibrationen. Folglich werden derartige Vibrationen an dem Führungsbügel 6 nur gedämpft eingeleitet und wirken nur geschwächt auf den Energiespeicher 7, den Bedienerhandgriff und den Arm des Bedieners. Dies erhöht sowohl den Bedienkomfort als auch die Lebensdauer des Energiespeichers 7. On the guide bracket 6 a provided for supplying the electric motor electrical energy storage 7 is arranged. By arranging the energy store 7 on the guide bracket 6, the relative mass of the guide bracket 6 in relation to the upper mass 2 and the lower mass 3 can be increased. This allows a reduction in the vibrations introduced by the working movement of the rammer 1 in the guide bracket 6. Consequently, such vibrations only attenuated introduced to the guide bracket 6 and act only weakened on the energy storage 7, the operator handle and the arm of the operator. This increases both the ease of use and the life of the energy storage 7.
Weiterhin Ist eine elektronische Steuerungsvorrichtung 8 an dem Führungsbügel angeordnet. Dies ermöglicht es, Steuerungsvorgaben des Bedieners mit nur geringem Verkabelungsaufwand über die Steuerungsvorrichtung 8 an die Antriebsvorrichtung zu leiten. Weiterhin kann die Steuerungsvorrichtung 8 mit nur geringem Verkabelungsaufwand durch den Energiespeicher 7 versorgt werden. Furthermore, an electronic control device 8 is arranged on the guide bracket. This makes it possible to direct control input from the operator with little cabling effort via the control device 8 to the drive device. Furthermore, the control device 8 can be supplied by the energy store 7 with only a small amount of wiring.
Zum Schutz des Energiespeichers 7 und der Steuerungsvorrichtung 8 in der exponierten Lage am Führungsbügel 6 an der vom Bodenbereich 5 abgewandten O- berselte des Stampfers 1 Ist eine Abdeckvorrichtung 9 vorgesehen, die in der ge- zeigten Arbeitsstellung des Stampfers 1 oberhalb des Energiespeichers 7, also vom To protect the energy storage device 7 and the control device 8 in the exposed position on the guide bracket 6 on the side facing away from the bottom region 5 O Berselte the rammer 1 A cover 9 is provided, which in the shown working position of the rammer 1 above the energy storage 7, ie from
eim insa z in einem augra en.  eim insa z in an augra.
Zudem kann ein durch eine Lüftervorrichtung (nicht gezeigt) erzeugter Kühlluftstrom unterhalb der Abdeckvorrichtung 9 entlang dem Energiespeicher 7 und der Steuerungsvorrichtung 8 geleitet werden, wie durch den gestrichelten Pfeil gezeigt. Dies ermöglicht es, die Betriebstemperatur des Energiespeichers 7 und der Steuerung 8 niedrig zu halten und so deren Lebens- bzw. Einsatzdauer zu erhöhen. Der Kühlluftstrom sollte vom Bediener weggeführt werden. In der gezeigten Ausführungsform weist die Abdeckvorrichtung 9 einen entlang dem gebogenen Pfeil schwenkbaren Teil 10 auf, welcher über ein Scharnier 1 1 mit einem feststehenden Bestandteil der Abdeckvorrichtung 9 verbunden Ist. Der schwenkbare Teil 10 ermöglicht es dem Bediener, die Abdeckvorrichtung 9 aufzuklappen und einfachen Zugang zum Energiespeicher 7 zu haben. So kann eine Betriebsanzeige des Energiespeichers 7 kontrolliert, ein Ladegerät bzw. eine externe Stromquelle mit dem Energiespeicher 7 verbunden oder der Energiespeicher 7, z. B. zum Laden außerhalb des Geräts, gewechselt werden. In addition, a cooling air flow generated by a fan device (not shown) may be directed below the capping device 9 along the energy storage 7 and the control device 8, as shown by the dashed arrow. This makes it possible to keep the operating temperature of the energy store 7 and the controller 8 low and thus increase their life or service life. The cooling air flow should be led away by the operator. In the embodiment shown, the covering device 9 has a part 10 which can be swiveled along the curved arrow and which is connected to a fixed component of the covering device 9 via a hinge 11. The pivotal part 10 allows the operator to unfold the cover 9 and to have easy access to the energy storage 7. Thus, a power indicator of the energy storage 7 controlled, a charger or an external power source connected to the energy storage 7 or the energy storage 7, z. B. for charging outside of the device to be changed.

Claims

Patentansprüche claims
1. Arbeitsgerät ( 1) mit 1st implement (1) with
einer Bodenkontaktvorrichtung (4) zum Bearbeiten eines in einer Arbeitsstellung des Arbeitsgeräts unterhalb der Bodenkontaktvorrichtung (4) befindlichen Bodenbereichs (5);  a ground contact device (4) for processing a in a working position of the implement below the ground contact device (4) located bottom portion (5);
einer durch einen Elektromotor betreibbaren Antriebsvorrichtung zum Erzeugen einer Arbeltsbewegung der Bodenkontaktvorrichtung (4);  a drive device operable by an electric motor for generating an Arbeltsbewegung the ground contact device (4);
einem von einem Gehäuse umschlossenen elektrischen Energiespeicher (7) zum Versorgen des Elektromotors mit elektrischer Energie; und  an electrical energy store (7) enclosed by a housing for supplying the electric motor with electrical energy; and
einer in der Arbeltsstellung oberhalb des Energiespeichers (7) angeordneten Abdeckvorrichtung (9) zum Abdecken des Gehäuses und damit des Energiespeichers (7).  a in the Arbeltsstellung above the energy storage device (7) arranged covering device (9) for covering the housing and thus the energy storage device (7).
2. Arbeitsgerät ( 1 ) nach Anspruch 1 , mit 2. Tool (1) according to claim 1, with
einer Führungsvorrichtung (6) zum Führen des Arbeitsgeräts ( 1 ); wobei der Energiespeicher (7) und die Abdeckvorrichtung (9) an der Führungsvorrichtung (6) angeordnet sind.  a guide device (6) for guiding the working device (1); wherein the energy store (7) and the cover device (9) are arranged on the guide device (6).
3. Arbeitsgerät nach Anspruch 1 oder 2, mit 3. Tool according to claim 1 or 2, with
einer elektronischen Steuerungsvorrichtung (8) zum Steuern eines Betriebs der Antriebsvorrichtung und/ oder des Elektromotors; wobei  an electronic control device (8) for controlling an operation of the drive device and / or the electric motor; in which
die Abdeckvorrichtung (9) In der Arbeitsstellung oberhalb der Steuerungsvorrichtung (8) angeordnet ist und die Steuerungsvorrichtung (8) abdeckt.  the cover device (9) is arranged in the working position above the control device (8) and covers the control device (8).
4. Arbeitsgerät ( 1 ) nach einem der vorstehenden Ansprüche, wobei 4. Tool (1) according to any one of the preceding claims, wherein
die Abdeckvorrichtung (9) eine im Wesentlichen flache Abdeckplatte aufweist, und wobei die Abdeckplatte eine in der Arbeitsstellung oben am Energiespeicher (7) befindliche Oberseite des Gehäuses des Energiespeichers (7) und/oder eine in der Arbeitsstellung oben an der Steuerungsvorrichtung (8) befindliche Oberselte der Steuerungsvorrichtung (8) im Wesentlichen abdeckt.  the cover device (9) has a substantially flat cover plate, and wherein the cover plate is a top of the housing of the energy store (7) located in the working position at the top of the energy store (7) and / or one in the working position at the top of the control device (8) Upper part of the control device (8) substantially covers.
5. Arbeitsgerät ( 1 ) nach einem der vorstehenden Ansprüche, wobei 5. Tool (1) according to any one of the preceding claims, wherein
die Abdeckvorrichtung (9) ein vor einer Wärmeeinstrahlung schützendes Material und/oder eine einen wesentlichen Teil der Wärmeelnstrahlung reflektierende Beschichtung aufweist.  the covering device (9) has a material which protects against heat radiation and / or a coating which reflects a substantial part of the thermal radiation.
6. Arbeitsgerät ( 1 ) nach einem der vorstehenden Ansprüche, wobei die Abdeckvorrichtung (9) ein vor Steinschlag schützendes Material aufweist. 6. Implement (1) according to one of the preceding claims, wherein the cover device (9) has a material that protects against stone chipping.
7. Arbeitsgerät ( 1 ) nach einem der vorstehenden Ansprüche, wobei 7. Tool (1) according to one of the preceding claims, wherein
die Abdeckvorrichtung (9) einen schwenkbaren Teil ( 10) aufweist, und in einer Schwenkstellung des schwenkbaren Teils ( 10) der Energiespeicher (7) aus einer Aufnahmevorrichtung entnehmbar ist.  the covering device (9) has a pivotable part (10), and in a pivoting position of the pivotable part (10) the energy store (7) can be removed from a receiving device.
8. Arbeltsgerät ( 1 ) nach einem der vorstehenden Ansprüche, wobei 8. Arbeltsgerät (1) according to any one of the preceding claims, wherein
die Abdeckvorrichtung (9) einen entnehmbaren Teil aufweist, und  the cover device (9) has a removable part, and
der Energiespeicher (7) aus der Aufnahmevorrichtung entnehmbar ist. wenn der entnehmbare Teil der Abdeckvorrichtung (9) entnommen ist.  the energy store (7) can be removed from the receiving device. when the removable part of the cover device (9) is removed.
9. Arbeitsgerät ( 1) nach einem der vorstehenden Ansprüche, wobei 9. Tool (1) according to any one of the preceding claims, wherein
die Abdeckvorrichtung (9) eine Kühlluftstromführung zum Führen eines Kühlluftstroms entlang dem Energiespeicher (7) und/ oder entlang der Steuerungsvorrichtung (8) aufweist.  the cover device (9) has a cooling air flow guide for guiding a cooling air flow along the energy store (7) and / or along the control device (8).
10. Arbeitsgerät ( 1 ) nach einem der vorstehenden Ansprüche, wobei 10. Tool (1) according to one of the preceding claims, wherein
die Abdeckvorrichtung (9) wenigstens eine Öffnung zum Abführen von unter der Abdeckvorrichtung befindlicher Warmluft aufweist.  the cover device (9) has at least one opening for discharging warm air located under the cover device.
1 1. Arbeitsgerät ( 1) nach einem der vorstehenden Ansprüche, wobei 1 1. Implement (1) according to one of the preceding claims, wherein
die Abdeckvorrichtung an dem Gehäuse des Energiespeichers (7) und/oder an einem Gehäuse der Steuerungsvorrichtung (8) befestigbar ist.  the covering device can be fastened to the housing of the energy store (7) and / or to a housing of the control device (8).
12. Arbeitsgerät ( 1) nach einem der vorstehenden Ansprüche, wobei 12. Tool (1) according to one of the preceding claims, wherein
das Arbeitsgerät ( 1 ) eine Masse von wenigstens 15 kg aufweist,  the implement (1) has a mass of at least 15 kg,
das Arbeitsgerät ein Stampfer ( 1 ) oder eine Vibrationsplatte zur Bodenverdichtung ist und die Bodenkontaktvorrichtung (4) eine Bodenkontaktplatte (4) aufweist,  the implement is a rammer (1) or a vibration plate for soil compaction and the ground contact device (4) has a ground contact plate (4),
das Arbeitsgerät eine Walze ist und die Bodenkontaktvorrichtung eine Walzenbandage aufweist, und /oder  the implement is a roller and the ground contact device comprises a roller bandage, and / or
das Arbeitsgerät ein Aufbruchhammer Ist und die Bodenkontaktvorrichtung eine Schlagvorrichtung aufweist.  the implement is a breaker and the ground contact device has a percussion device.
EP12766884.6A 2011-10-06 2012-09-13 Electric tool having a protective hood Active EP2764161B1 (en)

Applications Claiming Priority (2)

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DE102011115008A DE102011115008A1 (en) 2011-10-06 2011-10-06 Power tool with protective cover
PCT/EP2012/003845 WO2013050102A1 (en) 2011-10-06 2012-09-13 Electric tool having a protective hood

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EP2764161A1 true EP2764161A1 (en) 2014-08-13
EP2764161B1 EP2764161B1 (en) 2018-05-30

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US (1) US20140262400A1 (en)
EP (1) EP2764161B1 (en)
DE (1) DE102011115008A1 (en)
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WO2013050102A1 (en) 2013-04-11
EP2764161B1 (en) 2018-05-30
US20140262400A1 (en) 2014-09-18

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