DE102007004433A1 - Compressed soil e.g. garden soil, loosening method, for e.g. scarifying of lawn, involves mechanically separating plant parts with mechanical interference of oscillating tool provided for separating and crushing up cuts, tooth and ribs - Google Patents

Abstract

The method involves crushing of a soil layer, and mechanically separating plant parts by cutting, shaking, pushing and rubbing with a help of mechanical interference of an oscillating tool e.g. scarifier (13) with processing movement running parallel to a soil surface. The oscillating tool is provided for separating and crushing up favoring cuts, claws, tooth and ribs. An independent claim is also included for an electrical hand-held device for loosening compressed soil.

Description

State of the art

Of the Garden soil not only serves the plants as root space, but also provides you with important nutrients and essentials Water.

Horticulture Soils must therefore be regular be edited to give the plants an optimal soil condition sure. Weeds should be on the beds They are to be removed in case of shallow tillage in any case. So that air, water and nutrients penetrate better into the soil may include distrusting or de-mossing necessarily to the necessary care measures.

To the Loosening and crumbling of garden soils, for weeding of weeds and for spreading lawns certain methods and processing equipment known.

example Tillage: for tillage of garden floors especially hand-held devices in different designs as well as motor driven equipment such as ground milling, Groundhooks, cultivators ect., With electric or internal combustion engine Drive used.

When working with handsets z. B. DE 20301650 U1 and DT 1916917, only insufficient soil loosening and uneven crumbling are achieved at low operating speeds.

Ground milling z. B. DE 19860394 A1 and AT 354174 are widely used and are used in gardening for hacking and weeding machines. These devices are not only expensive in construction and in the production (gear), but also uncomfortable to handle in smaller areas. If the knives rotate in the same direction, it is as if the handset is trying to run away while working. The device is probably in one direction, but very difficult to lead in the opposite direction. As the rotary tillage tools engage the soil, soil loosening is achieved, but larger soil portions are thrown away and therefore uniform crumbing of the soil can not be achieved. Light soils z. B. are to maintain the natural soil structure, if possible without the soil layers raise or raise loosen up.

at the tillage consists of devices of known design In addition, the danger that when working between plants close together these can be injured or destroyed.

Advantages of the invention

Of the Invention is therefore the object of the method and handset for loosening compacted soils, for weeding of weeds and for spreading lawns without the aforementioned disadvantages, such as the methods of tillage described, develop.

example Soil cultivation: the method of tillage should be the possibility provide the soil between narrow-bodied plants even without the To raise or raise soil layers, to intensify and intensify to achieve a uniform crumb, so that the soil provides more root space for the plants, contains more air and saves more water.

to Implementation of the process is an easy to manufacture, inexpensive and easy-to-use hand-held device in such a way that a loosening even with close planting of the soil close to the crops with good soil crumbling and without destroying the natural soil structure is possible. The main focus of development thereby on the machine tillage of small soil surfaces and gardens, the selective loosening of soils and tillage between narrow plants.

Of the Work area of the device but also other areas cover the gardening. In particular, the weeding of weeds and the lawn care, such. B. diffracting and removing Moss and matted layers on the lawn surface.

These Tasks are performed by a method having the features of the claim 1 solved, in which an electrical handset for loosening compacted soils, for weeding of weeds and for spreading grass areas, which having the features of claim 2, used in an advantageous manner can be.

By the features of the dependent claims will become Hand device designed in an advantageous manner.

drawing

Based In the drawings, the invention will be described below with the aid of exemplary embodiments explained in more detail. It shows:

1 An embodiment of the hand-held device according to the invention in an exploded view development with a profiling tool;

2 An embodiment of the hand tool according to the invention with cultivator;

3 A sectional view of the tool carrier;

4 Schematic exploded view of the tool carrier with asymmetric arrangement of the form elements and hoe;

5 Schematic exploded view of the tool carrier with symmetrical arrangement of the form elements and cultivators;

Description of an embodiment

The shown in different versions in the drawing Electric hand tool for soil cultivation is electric motor driven. The drive device comprises an electric drive motor, directly from the power grid or from an energy store, in particular an accumulator, is supplied with electrical energy. In the last In this case, the device can be operated independently of the mains supply become.

The output shaft ( 1 ) lies on an axis with the motor shaft ( 15 ) or it is perpendicular to it ( 2 ). With the output shaft ( 1 ) is positively or non-positively connected to an eccentric ( 2 ) with balance weight ( 10 ). The eccentric is in a rolling bearing ( 3 ), which with its outer ring in a bore of the tool carrier ( 4 ) is fixed.

At least one elastic shaped element ( 5 ) protrudes parallel to the axis of the output shaft ( 1 ) from recesses of the housing ( 9 ) and connects the housing ( 9 ) with the tool carrier ( 4 ). Depending on the design, one or more mold elements ( 5 ) the turning of the tool carrier ( 4 ) with rotating output shaft ( 1 ) and at the same time ensure elastic mounting of the tool carrier ( 4 ).

When the output shaft ( 1 ) and its associated eccentric ( 2 ) is set in rotation when the drive motor is switched on, the eccentric moves ( 2 ) in its receptacle, the rolling bearing ( 3 ), whereby the tool carrier ( 4 ) is placed in oscillatory motion. By symmetrical or asymmetrical arrangement of the elastic shaped elements ( 5 ) parallel to the plane ( 14 ) of the axis of the output shaft ( 1 ), different trajectories ( 16 ) for different areas of the rocker plane of the tool carrier ( 4 ). The amplitude of the pivoting movement can be achieved by different deformation resistances of the elastic shaped elements (FIG. 5 ), whose number and arrangement are influenced. Also the boom length and the mechanical resistance to the tools ( 11 . 12 . 13 ) when they are used have a direct influence on the pivoting movement.

The various tools, such as cultivators ( 11 ), Hoe ( 12 ) and Verticultier ( 13 ) are placed on the tool carrier ( 4 ) via the tool holder ( 8th ) and positioning and quick-clamping elements ( 7 ) attached. The mechanical intervention of the oscillating tool ( 11 . 12 . 13 ), with parallel to the soil surface extending machining movement allows the advantageous embodiment of the respective tasks for loosening compacted soils, for weeding weeds and for diffusing lawns. The frequency and the size of the pivoting angle significantly determine the processing intensity.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 20301650 U1 [0005]
• - DE 19860394 A1 [0006]
• AT 354174 [0006]

Claims (13)

Method for loosening compacted soils, weeding weeds and for spreading grass areas, characterized by the mechanical engagement of an oscillating tool ( 11 . 12 . 13 ) with working parallel to the soil surface processing movement, the crushing of the soil layer and the mechanical separation of plant parts as a result of cutting, shaking, bumping and rubbing, wherein the oscillating tool ( 11 . 12 . 13 ) is provided with cutting, claws, prongs and ribs which are favorable for cutting and shredding. Electric hand tool for loosening compacted soils, for weeding weeds and for spreading grass areas according to claim 1, characterized in that an electric motor driven output shaft ( 1 ) with an eccentric ( 2 ) connected in a tool carrier ( 4 ) fixed rolling bearings ( 3 ), wherein one or more elastic shaped elements ( 5 ), which housings ( 9 ) and tool carrier ( 4 ), an elastic mounting of the tool carrier ( 4 ), so that with rotating output shaft ( 1 ) an oscillating movement of the tool carrier ( 4 ) The result is. Electrical hand tool according to claim 2, characterized in that the output shaft ( 1 ) and the motor shaft ( 15 ) lie on an axis or are arranged perpendicular to each other. Electrical hand tool according to claim 2, characterized in that one or more elastic shaped elements ( 5 ) on the housing ( 9 ) and on the tool carrier ( 4 ), paraxial to the plane ( 14 ), in which the longitudinal axis of the output shaft ( 1 ), attack. Electrical hand tool according to claim 2 and 4, characterized in that the elastic shaped elements ( 5 ) in a symmetrical or asymmetric arrangement to the plane ( 14 ) of the longitudinal axis of the output shaft ( 1 ) lie. Electrical hand-held device according to claim 2, 4 and 5, characterized in that in an asymmetrical arrangement of the elastic molded elements ( 5 ) the trajectories ( 16 ) of different areas of the rocker plane of the tool carrier ( 4 ) with increasing distance from the eccentric ( 2 ) changed from a circular shape into an ever flatter elliptical shape. Electrical hand-held device according to claim 2 and 4 to 6, characterized in that the amplitude of the pivoting movement ( 16 ) by different long tool training, by different deformation resistances of the elastic molded elements ( 5 ), their number, arrangement and their position to the eccentric ( 2 ) can be influenced. Electrical hand tool according to claim 2, characterized in that the tool carrier ( 4 ) with a tool holder ( 8th ), Positioning and quick-clamping elements ( 7 ) for attaching tools such as cultivators ( 11 ), Hoe ( 12 ) and Verticultier ( 13 ) is provided. Electrical hand-held device according to claim 2, characterized in that the housing ( 9 ) a seal ( 6 ) to tool carriers ( 4 ) and rolling bearings ( 3 ) to protect against contamination. Electrical hand tool according to claim 2, characterized in that the vibration resulting from the unbalance by means of balancing weight ( 10 ), which rotatably with the eccentric ( 2 ) is reduced. Electrical hand tool according to claim 2, characterized in that the output shaft ( 1 ) positively or non-positively with the eccentric ( 2 ) connected is. Electric handset according to claim 2 characterized in that the drive alternatively by network or battery voltage can be operated. Electrical hand tool according to claim 2, characterized in that the frequency of the oscillating movement of the on the tool carrier ( 4 ) attached tool ( 11 . 12 . 13 ) Is adjustable or adjustable via the speed of the motor by means of rotary knob or slide switch.