EP0524273A1

EP0524273A1 - Gardening implement

Info

Publication number: EP0524273A1
Application number: EP92901979A
Authority: EP
Inventors: Iradj Hessabi
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-11
Filing date: 1991-12-11
Publication date: 1993-01-27
Also published as: AU9077391A; US5305584A; CA2075717A1; WO1992010091A1; AU659425B2

Abstract

Un outil pour tondre le gazon, pour couper et détacher la mousse et des mauvaises herbes et pour broyer les matières tondues et coupées comprend au moins un conducteur chauffant électrique (1) qui sert d'outil de tonte, de coupe, de détachement et de broyage. Cet outil se présente sous la forme d'une tondeuse roulante, d'un outil manuel ou roulant de coupe et de détachement (4) de mousse et de mauvaises herbes (23), et d'un récipient de broyage des matìères tondues et découpées pouvant être posé en position verticale.A tool for mowing the lawn, for cutting and detaching moss and weeds and for grinding the mowed and cut material comprises at least one electric heating conductor (1) which serves as a tool for mowing, cutting, detaching and grinding. This tool is in the form of a rolling mower, a manual or rolling cutting and detachment tool (4) of foam and weeds (23), and a container for grinding the mowed and cut materials. can be installed vertically.

Description

Gardening tool

The invention relates to a device for mowing lawn, cutting and releasing moss and weeds and chopping mowing and cutting material of all kinds.

The known mobile lawnmowers each have an internal combustion or electric motor for the cutting mechanism drive, which drives at least one rotating or oscillating horizontal blade. This causes a loud noise; this limits the usage times for lawnmowers in residential areas. The motor-driven lawn mowers are also dangerous because of the large centrifugal surface of their cutting tools. The clippings are usually pulled through the rotating or oscillating horizontal blades, crushed and often unclean, i.e. not smooth and cut at different cutting heights, especially since the blades are subject to high wear and tear and their sharpness wears off. Resharpening the blades is often necessary and time consuming. In addition, the motorized lawn mowers are undesirably heavy.

Chemical and / or mechanical means are used to remove weeds between or on pavement slabs, paving stones and garden areas. The known chemical moss and weed killers are harmful to the environment because of their penetration into the groundwater. The mechanical weed killers, such as knives or wire brushes, damage and scratch the edges of the pavement slabs or paving stones. They are also unwieldy and time-consuming to use.

Compacting devices for cut and mown material are known as pressing and / or packing devices. They are attached as a pack / bundle device to mowing devices in such a way that a complex process leads to the packaging of the mowing material. If, in addition, a reduction in the volume and the weight of the crop is required, this can only be done with additional equipment with great energy and cost expenditure and with loud noise.

Cut grass is costly transported and deposited in the city area as waste. In cities where organic waste collection is carried out, only a part of the organic waste disposal costs can be met

Composting measures are covered by compost recycling. Carrying the clippings to the garbage can is not easy, and the clippings take up a lot of space there.

It is an object of the invention to provide a device with which, in a simple, easy, low-noise manner, lawn mowing, moss and weed cutting and removal and shredding of cuttings and mowing material are made possible in a safe and environmentally friendly manner by simple means.

This object is achieved according to the invention by the features of patent claim 1, these features being used in the gardening implement designs listed in claim 2 and provided in the same way by each of these gardening tools _. at least one electrical Work the heat conductor as a cutting, burning and comminution tool.

It is also an object of the invention to design the gardening device as a lawn mower which, with a relatively simple construction, provides increased safety and a higher mowing quality without maintenance work and largely silent operation.

This task is solved by the features of claims 3 to 13.

Another object of the invention is seen in the gardening device in that it is designed for weed control, which is ecologically compatible and economical to operate with an extremely simple device construction and easy and safe handling.

The object is achieved by the features of claims 14 to 23 of the manually operated or mobile cutting and triggering device.

Ultimately, it is the object of the invention to disclose a garden tool that is simple in construction and easy to use, operates with little noise and comminutes the cut and mowed material in a safe manner to a small volume and weight in an environmentally friendly manner.

This object is achieved by the features of claims 24 to 29 by a container with a heat conductor grid as a shredding tool.

The gardening tool according to the invention enables a simple, safe, comfortable handling of lawn mowing, moss and weed killing and mowing and cutting crops in a quiet and environmentally friendly manner by one or Several electrical heating conductors in wire or grid form as cutting, burning and shredding tools.

The lawnmower cuts off the lawn with at least one electrically heated wire or rod, the heating conductor being attached to a chassis by means of a holder parallel to the terrain and which performs a lateral horizontal movement when the lawnmower is moving. The difference in elongation of the heating conductor at different working temperatures is compensated for by its holder, which is connected to a spring, or by arranging a resilient heating conductor holder, so that it is constantly under tension. At the front, an impeller is arranged parallel to the heating conductor as a supply and conveying means for the crop to be cut or the crop to be cut. This consists of several compartments and is rotatably mounted on the chassis and connected to the chassis by a belt drive.

The heating conductor is at a short distance from the wing edges of the individual compartments. During the travel movement, the impeller rotates in such a way that it brings the crop in the compartments to the heating conductor.

The flame cutting tool is protected by a parallel fence against the ingress of foreign bodies and stone chips. The heating conductor is set into an axial movement by a cam, preferably of a wave-shaped design, which is connected to the undercarriage by means of a drive. The movement of the heating conductor transversely to the direction of advance of the lawnmower is advantageous for faster cutting and good heat utilization of the heating wire. The operation of the heating conductor does not cause any audible noises; therefore operation is signaled by a safety light. The lawn mower is built on a mobile frame with wheels that are set in motion by a motor drive or pushed by the operator. When the lawnmower is pushed forward, the electrically operated heating conductor cuts the plants at the set height. The cut parts can by the weight and / or by the thrust of a conveyor, z. B. on a conveyor belt, transported to a downstream grass catcher. When driving the lawnmower forward, the impeller and possibly the conveyor belt are either driven directly by a motorized drive or via the running gear by the driving movement. The cutting height can advantageously be adjusted manually by means of a lever which is connected to the heating wire holder. This enables the height of the heating conductor on the lawnmower to be adjusted.

The heating conductor is very easy to replace and is advantageously connected to a transformer and / or an accumulator via an electrical connection and a switch.

The cutting and triggering device for moss and weed destruction consists of an electrical heating conductor, which is advantageously arranged in a ring and bendable manner at the lower end of a manual guide rod. The rod carries at the top an electrical connection and a handle as well as a switch, possibly a removable transformer or an accumulator, if this is not arranged upstream of the electrical connection.

After the ring-shaped heating conductor is brought around the weed or the plant, the current supply is switched on. When the heating conductor is shifted close to the ground in front of it cuts off the unwanted plants at the touched point. The cutting height or cutting depth is freely selectable by the user. Because of the small thickness and width of the annular heating conductor, a further, in-depth processing of the joints between the. Sidewalk or paving stones easily possible.

This moss and weed killer can also be made from at least one rod-shaped heating conductor. It is advantageous if this heating element is sprung at its connection point to the hand holder and is flexibly attached.

The weeds are burned and cut off by moving the rod-shaped heating conductor held parallel to the site. The remaining stock of the plant, which is in the joints or in the ground, is burned into the root system by pricking it with a heating rod.

This type of weed control prevents rapid regrowth and is used effectively.

The heating conductor is expediently very easy to replace. If the heating conductor is moved flat on the horizontally or vertically covered surface with moss, it is burned and separated from the surface.

This type of moss and weed control leaves no traces on the pavement slabs and is environmentally friendly.

With the cutting and triggering device, the weeds or similar plants can first be burned or cut off for horizontal separation with the horizontal, electrically heated rod or wire and then the deep plant parts can be attacked with a vertical laser beam. The heating conductor is advantageously of an angular design and is mounted on a chassis near the ground, and the bisector line of the heating conductor is directed in the direction of travel. The angular heating conductor is fastened to a holder which is elastically fastened by a spring with a vertically directed shaft in such a way that the bisecting line can dodge laterally and the heating conductor can pivot elastically in two axis directions in the event of obstacles.

The difference in elongation of the heating conductor at different working temperatures is compensated for by a holder which is connected to a spring or by arranging a resilient heating conductor holder. Immediately in front of the tip of the angle of the heating conductor is a rolling element, through which unevenness in the terrain can be avoided. If the rolling element has an electrically heatable surface, it is ensured that the median strip is also burned off. The heating conductor is at a short distance from the top edge of the site. If the heating conductor hits a plant, it is separated by burning as short as possible above the ground.

The clippings are advantageously stored in a container or collecting basket by an air suction device.

To further burn the short-cut plant stubble between the joints and the plant root, a light (laser) which is induced by induced radiation emission is used. The exact area of application of laser light is measured by light radiation sensors. The reflection-sensitive sensors determine the exact location of the plants. The detected areas are concentratedly irradiated with a higher proportion of intensified light. The laser generator is advantageously equipped with a linear mirror. The plant parts burned down by the laser light are also passed through the suction device into a connected container or collecting basket.

When the grass catcher is full, it can be removed from the moss and weed killer, since it is detachably connected to the moss and weed killer, and because it is provided with a pair of wheels, it can be conveniently pushed for emptying. During this process, the moss and weed killer stands on the front wheel and the two mounts of the grass catcher, which are designed like legs.

The cutting height is by adjusting screws on

The heating conductor holder and the position of the laser mirror can be adjusted using additional adjusting screws.

This type of thermal moss and weed destruction leaves no traces on the sidewalk slabs and is relatively environmentally friendly.

Exemplary embodiments of the invention are shown in the drawings and are explained in more detail below. It shows:

1 is a perspective view of a lawnmower,

2 is a side view of the lawn mower,

3 is a partial axial section through the roller with heating conductor of the lawn mower,

3a shows a side and a rear view of a and 3b lawn mower in a further embodiment,

4 shows a side view of a manually operated cutting and triggering device when enclosing a plant by means of an annular heating conductor,

5 is a side view of the cutting and triggering device with a joint guide of the heating conductor,

6 is a side view of the cutting and triggering device when adapting the heating conductor in vertical surfaces,

7 is a side view of the cutting and triggering device with flat guidance of the annular heating conductor,

Fig. 8 shows a longitudinal section through the rod-shaped

Heating conductor and its connecting part of the cutting and triggering device,

Fig. 9 shows a longitudinal section through the annular

Heating conductor and its connecting part of the cutting and triggering device, 10 is a side view of the handle with detachable accumulator of the cutting and triggering device,

11 is a side view of a mobile cutting and triggering device with grass catcher,

12 is a side view of the device of FIG. 11 with the grass catcher removed,

Fig. 13 is a plan view of the angular, itself

Heating conductors of the device according to FIGS. 12 and 13 which adapt to uneven terrain

Fig. 14 is a vertical section through a

Shredding container with heating grid,

15 shows a section through a heating conductor of the heating conductor grid,

16 is a plan view of a further embodiment of the heating conductor grid.

The device for mowing lawn, cutting and releasing moss and weeds and chopping this mowing and cutting material is equipped with at least one electrical heating conductor (1) as a mowing, cutting, releasing and shredding tool.

This device is advantageously designed as a mobile lawn mower (2), as a manually operated or mobile cutting and triggering device (3, 4) for moss and weeds, and as an erectable shredding container (5) for the mowing and clippings. The mobile lawnmower (2) (mowing device) shown in perspective in FIG. 1 has a wire-shaped heating conductor (1) which is arranged on a holder (6) in front of an impeller (7). The impeller (7), which is mounted axially parallel to the heating wire (1) as a mowing roller by radial vanes, has lateral, circular cam disks (8) with wave-shaped control tracks (8a) which serve to control the movement of the heating wire (1) in the axial direction. By arranging a resilient heating conductor holder (6), the thermal expansion difference of the heating conductor (1) is compensated for between the cold and poor condition.

The heating conductor (1) is arranged at a short distance, parallel to the outer edges of the passing wings (9), so that the heating conductor (1) has everything between the incoming wing (9) and the heating conductor (1) during operation. existing crop is pressed against this and this cuts it by braising.

The lawn mower (2) has wheels (10) on all sides. Preferably two of these wheels (10) are arranged on a shaft (11) which rotatably supports in the frame (12) of the lawnmower (2). At the end of this shaft (11) there are preferably two drive wheels (13) which can only be carried in one direction so that they each jointly take on the task of driving the impeller (7) with the cam disc (8). The shaft (14) of the impeller (7) carries at least one gear (15) which rotates the impeller (7) in each direction of rotation through a toothed belt (16). During the forward movement of the lawnmower (2), the impeller (7) rotates and its wavy circular cam disc (8) causes the heating conductor holder (6) to move axially. A spring (17) supports this movement and presses it Heating conductor holder (6) non-positively against the cam disc (8).

Fig. 2 shows the side view of the lawnmower (2) with the impeller (7) and its belt drive (13, 15, 16), which establishes the drive connection to the wheels (10). The direction of travel of the mower frame (12) and the direction of rotation of the impeller (7) are indicated by arrows. The toothed belt (16) is advantageously connected to the front wheels (10) here. The height of the heating conductor holder (6) with the heating wire (1) determines the cutting height; it can be set differently in a known manner by latching means in lateral holding arms (18).

Fig. 3 shows a part of an axial section through the impeller (7) with a view of the heating conductor (1) and its holder (6). The heating conductor holder (6) can be mounted in a slot-like slot or the like on the frame (12) transversely to the direction of travel. The wavy cams (8a) arranged on the side cam disc (8) of the impeller (7) serve for the axial movement of the heating wire (1) and its holder (6). The spring (17) supports a rolling element (19) in a force-fitting manner on the cam disc (8). The rolling element (19) is attached to the end of the heating conductor holder (6). The heating conductor (1) is easily interchangeable, for which purpose it is clamped at its ends in contacts of the bow-shaped holder (6), from which the current conductor (20) to the power supply device (SV), for. B. an accumulator battery are performed.

Instead of a cam drive, the axial heating wire movement can also be brought about by another known drive, possibly with a separate electric motor. The lawnmower (2) shown in FIGS. 3a and 3b corresponds in structure and function to the lawnmower according to FIGS. 1 to 3 and the same reference numbers are used for the same components.

The frame (12) is carried by four wheels (10) in a mobile manner and has a guide hand lever (60) with an accumulator (61) at the top and the operating switches.

The impeller (7), which is rotatably mounted about the axis (16) in the frame (12) and driven by the drive (13, 15, 16), is equipped without a cam disc (8), but instead has a circular, lateral race (62) which the bow-shaped heating conductor holder (6) with rollers (63) is supported.

The two rollers (63) are arranged to the maximum and / or are elliptical, so that when they roll on the race (62) they move the holder (6) and thus the heating element (1) back and forth, transverse to the direction of travel. cause.

The impeller (7) is assigned two holders (6), each with a heating conductor (1), which act alternately in the two directions of travel of the lawnmower (2) and are switched on and off automatically or by electrical switches.

These two heating conductors (1) are spaced from one another between the wheels (10) on the underside of the impeller (7).

Instead of its plate-shaped blades (9), the impeller (7) can also be equipped only with rods on the circumference, which interact with the heating conductors (1) for mowing. The heating conductor holders (6) are guided on the frame (12) and / are spring-mounted.

The manually operated cutting and triggering device (3) is shown in FIGS. 4 to 10. 4 shows a side view of this device (3) with a guide rod (21) as a holder and an electrical connection (22) during the wrapping of a plant (23) with an annular heating conductor (1) for the purpose of plant destruction.

When the heating conductor (1) is moved, the plant (23) is cut. The root remaining in the joints of footpath slabs (24) or pavement can also be burned into narrow slots (24a) by inserting the heating conductor (1).

A low power generator or accumulator (25) and the switches (26) are located on the handle (27) or in the course of the electrical cable (22).

This device (3) is operated by hand and can also be used to shorten plant branches.

The length of the guide rod (21) of the moss and weed killer (3) is advantageously adjustable. This rod (21) is advantageously flexible in its course by a radial separation of the rod into a long rod (21) and lower short rod part (21a) and a connection with a spring (28). The heating conductor (1) is connected to the lower rod part (21a) of the rod (21) by screws (29) or some other releasable type of fastening, which can be replaced relatively easily.

Fig. 5 shows a side view of the cutting and triggering device (3) with a joint guide. The plant root and remnants that are in the joints (24a) and thin slot-like cracks (24a) can be burned and damaged.

Fig. 6 shows the adaptation of the heating conductor (1) to unevenness, even in a vertical surface. Because the heating conductor (1) can be easily guided, it can avoid obstacles and adapt to every corner and edge and every angle. The rod (21) is also axially flexible.

Fig. 7 shows the flat guidance of the annular heating conductor (1) for the purpose of killing moss (23a).

This device (3) can also carry an exchangeable rod-shaped or ring-shaped heating conductor (1).

The procedure is approximately the same in both cases. By connecting a transformer (25), this device (3) can also be used in damp areas without the risk of electric current for the operator.

Because of the low energy consumption, the device (3) can also be operated with an accumulator (25) or other energy storage device, which, as shown in FIG. 10, is removably attached to the handle (27) and by means of plug-in and latching and sliding connections on the handle (27) is releasably fixed and electrically contacted at the same time.

Fig. 8 shows a side section through the rod-shaped heating conductor (1) and its connecting part (30).

By classifying a resilient

Expansion compensation holder (31) compensates for the expansion difference of the heating conductor (1).

After loosening a fastening screw (19), the heating conductor (1) and its expansion compensation holder (31) Pull its connecting part (30) out of the lower end (21a) of the guide rod (21) to replace it.

Fig. 9 shows a lateral section through the annular heating conductor (1) and its connecting part (30).

The spring (32) for expansion compensation of the heating conductor (1) and its holder (31) are advantageously designed as a pluggable part. This is with a detachable

Fastening screw (29) detachably attached to the lower end of the guide rod (21).

11 to 13 show the mobile cutting and triggering device (4).

The frame (33) of this device (4) carries a removable collecting basket (34) and an electric drive (35).

A height-adjustable shaft (36) is arranged perpendicular to the floor (38) on the front side of the frame (33). The shaft (36) is flexible in its course by a radial separation and a connection with a spring (37). At the lower end of the shaft (36), the heating conductor (1) is connected so that it is relatively difficult to pivot. The heating conductor (1) consists of two heating wires (1) connected at an angle, preferably at right angles.

The bisector line of the two heating conductors (1) is normally in the direction of travel. If the heating conductor (1) is obstructed by an unevenness in the terrain (38), the direction of the bisecting line changes. If the obstruction hits front and perpendicular to the bisecting line, this is run over by a possibly driven roller (39). Suction tubes (40) arranged on the side guide the cut parts into a collecting basket (34) which is separably connected to the frame (33).

In order to destroy the roots of the shortened plants (23), a shortening of the plants (23) is followed by a light generator (laser) (41), which is enhanced with induced radiation emission, at a set depth between the pavement joint joints on the roots. An air suction pipe (40) also guides the plant and / or moss parts loosened by laser (41) into the collecting basket (34).

The electric drive device (35) is used to generate suction air and to drive the device (4). The electrical switches (42) and electrical connections (43) are advantageously attached to the hand control lever (44). The function of the switches (42) is linked to a grass catch lever (45). When the collecting basket (34) is disconnected, the electrical current is switched off. The wheels (46) and the mounting levers (47) under the collecting basket (34) and a stone protection grille (48) on the front side of the device (4) can be clearly seen from FIG. 12.

Fig. 12 shows a side section through the mobile device (4) with the grass catcher (34) separated. The detachably connected collecting basket (34) can be separated from the frame (33) on the one hand by the lever (45) on the upper part of the basket (34) and on the other hand by lever (47) on the lower part of the collecting basket (34) which can be rotated with a foot pedal , the wheels (46) with the grass catcher (34) moving away from the frame (33). The frame (33) is then on the front roller (39) and the two holding anchors (47). Operation of the device (4) is then not possible because the grass catcher (34) is uncoupled from the wheels (46) and hand control lever (44) with switch (42). A radiation detector (49), whose output signal regulates the laser power, observes the location of the laser light hitting the floor (38). The radiation detector (49) is preferably an infrared detector with which the firing temperature, which is above 100 degrees C, is measured.

Fig. 13 shows the adaptation of the heating conductor (1) to unevenness in the terrain (38). By pivoting the rectangular heating conductor (1), it adapts to the disabilities.

The shaft (36) is also axially flexible, so that vertical deflection is also possible when plate edges meet the heating conductor (1).

To compensate for expansion differences on the heating conductor (1), the holder (50) of the heating conductor (1) is made of resilient material or is provided with a spring.

The comminution container (5) is shown in vertical section in FIG. 14. This container (5) has a lower container part (51 a) into which a removable container (52) is inserted.

The grass clippings are fed through the overhead supply opening (65) of the container part (51b) onto the heating conductor grid (100), which is stretched underneath and is formed from heating conductors (1). Several parallel and crossed heating wires (1) or rods (1) form the heating conductor grid (100). The heating conductor grid (100) is supplied with heating energy by switching on an electrical switch from a mains-powered transformer or an accumulator battery. The cut grass that has already been burned and cut has lost a large part of its weight due to the evaporation of the liquid. The detachable clippings collecting container (52) arranged underneath can advantageously be removed from the container (5) for emptying.

The electrically heatable heating wires (1) or heating rods (1) are electrically connected to connecting lines (20) at the ends. The ends of the heating conductors (1) are each held laterally in the wall of the container (5) in an interchangeable frame (53) which carries contact rails (57), each of which is connected opposite to one of the connecting lines (20). The crossed groups of parallel heating conductors (1) are either at their crossing points with insulators, e.g. B. glass bodies, spaced from each other or spaced so far one above the other that electrical contact between the two crossed parallel conductor arrangements is excluded.

15 shows a section through a heating conductor grid (100). The displacement of individual heating conductors (1) and a change in the number of pieces of the parallel heating conductors (1) can be easily carried out by arranging them in an undercut longitudinal slot (54) of the frame (53). In the undercut (54a), the end of the heating wire (1) is held in a form-fitting manner with a contact head (55). A prestressed contact spring (56) supports the contact head (55) from the contacting rail (57). The change in length of the heating conductor (1) at different temperatures is compensated within the frame (53) and its slot (54) with a spring (58).

The size of the heating conductor grid meshes determine the dimensions of the clippings falling through and in Connection with the burning power of their

Moisture reduction. This also depends on the reduction in volume and weight of the compacted cuttings a.

Fig. 16 shows a heater grid design which is provided with contact connections (20) only on two opposite sides. In this heating grille (100), the heating conductors (1) each run at an angle of 45 and 135 degrees to the extension device of the frame (53) and its contact rails (57) and thus form the heating grille (100). The heating conductors (1) are mechanically and preferably also electrically connected to one another at the crossing points; the heating grid (100) is preferably punched out of a resistance sheet. Since the electrical paths to each individual mesh point on the upstream and downstream sides are of the same length, there is practically no electrical cross-flow and uniform heating of all wire sections. Instead of a preferred square heating grid (100), a rhombic one can also be used, the contact strips (57) each lying opposite one another in the direction of a diagonal of the rhombuses or extending perpendicularly thereto.

As an alternative, asymmetrical conductor arrangements can also be provided with respect to the direction of extension, but an isolated connection of the respectively adjacent conductors is required in the mesh points, since otherwise the conductor sections are energized unevenly.

The heating conductor corner points on the edge in the direction of extension are expediently anchored to the frame (53) or clamped there in an insulated manner.

Claims

1. Device for mowing the lawn, cutting and releasing moss and weeds and chopping this mowing and cutting material, characterized in that it is equipped with at least one electric heating conductor (1) as a mowing, cutting, releasing and comminuting tool.

2. Apparatus according to claim 1, characterized in that the same as a mobile lawn mower (2), as a manually operated or mobile cutting and triggering device (3, 4) for moss and weeds and as an erectable shredding container (5) for the mowing and cutting material is.

3. Apparatus according to claim 1 and 2, characterized in that the heating conductor (1) of the lawnmower (2) forms a cutting and firing tool heated by electrical resistance heating and on a holder (6) made of resilient material which detects the difference in elongation of the heating conductor ( 1) equalizes at different temperatures.

4. Device according to one of claims 1 to 3, characterized in that the heating conductor (1) by an axially oscillating, with one or more of the landing gear wheels (10) connected drive transversely to the direction of travel of the lawn mower (2) can be pushed back and forth.

5. Apparatus according to claim 4, characterized in that the oscillating drive consists of a cam (8) and a spring-loaded roller (19) which is connected to the heating conductor holder (6).

6. Device according to one of claims 1 to 5, characterized in that on one to the heating conductor (1) in parallel arranged axis (14) a conveyor wheel (7) is rotatably mounted, which has radially free compartments distributed over the circumference and the circumference of which is slightly spaced from the heating conductor (1).

7. Apparatus according to claim 6, characterized in that the feed wheel (7) is an impeller, the wing (9) are arranged radially and the outer edges of the wing (9) are parallel to the heating conductor (1).

8. Device according to one of claims 1 to 7, characterized in that the feed wheel (4) with one or more of the undercarriage wheels (10) rotating in the same direction by a belt drive (13, 15, 16) is drivingly connected.

9. Apparatus according to claim 8, characterized in that the belt drive (13, 15, 16) with the undercarriage (12) is only connected in terms of drive forwards.

10. Device according to one of claims 1 to 9, characterized in that the heating conductor (1) is battery-powered or transformer-powered.

11. Device according to one of claims 1 to 10, characterized in that the feed wheel (7) are each assigned to a holder (6) attached heating conductors (1) which can be switched on and off alternately in both directions of travel automatically or by switches .

12. Apparatus according to claim 11, characterized in that each holder (6) with maximally arranged and / or elliptical rollers (63) on lateral, circular circumferential races (62) of the feed wheel (7) and transversely through these rollers (63) is pushed back and forth to the direction of travel.

13. Apparatus according to claim 11 and 12, characterized in that the chassis (12) is carried by four wheels (10) and has a hand control lever (60) with an accumulator (61).

14. Apparatus according to claim 1 and 2, characterized in that the manually operable cutting and triggering device (3) has a heating conductor heated by electrical resistance heating (1) as a cutting tool, which as

Heat conductor ring is formed and is attached to a rod-shaped hand holder (21) in an elastically flexible and interchangeable manner.

15. Apparatus according to claim 1 and 2, characterized in that the heating conductor (1) forms a cutting firing tool heated by electrical resistance heating, is rod-shaped and is elastically flexible and interchangeably attached to a rod-shaped hand holder (21).

16. Apparatus according to claim 1 or 2, characterized in that the heating conductor holder (31) consists of a rigid, rigid material and to compensate for the difference in elongation of the heating conductor (1) at different temperatures with the interposition of a spring (32) in a connecting part (30) to the guide rod (21) is arranged.

17. Apparatus according to claim 1 or 2, characterized in that the heating conductor holder (31) is made of a resilient material which compensates for the difference in elongation of the heating conductor (1) at different temperatures.

18. Apparatus according to claim 1 and 2, characterized in that the mobile cutting and triggering device (4) has a horizontal, electrically heated heating conductor (1) and one This has associated with it a vertically radiating laser (41) which, with induced radiation emission, burns off the parts of the plants (23) remaining between the joints.

19. Apparatus according to claim 18, characterized in that the heating conductor (1) is angular and is elastically pivotably connected to a flexible, vertical shaft (36).

20. Apparatus according to claim 18 and 19, characterized in that a rolling body (39) in the form of a roller is arranged at a short distance in front of the heating conductor (1).

21. Device according to one of claims 18 to 20, characterized in that a suction air generator (35) via channels (40) with the heating conductor area and the laser burning area is connected to a collecting basket (34).

22. Device according to one of claims 18 to 21, characterized in that on the chassis (33) of the device (4) at least one mounting anchor (45, 46) for fastening the separable collecting basket (34) is arranged and the drive

(35) of the device (4) is automatically switched off after the collecting basket (34) has been removed and cannot be switched on again.

23. Device according to one of claims 18 to 22, characterized in that the intensity of the laser (41) is controlled by a radiation detector (49) which is directed at a point at which the laser light hits the ground (38), with a lower brightness or the temperature of the irradiated location causes a higher laser power, and that the radiation detector (49) is an infrared detector, the output signal of which serves as an actual value for regulating the laser light intensity.

24. Apparatus according to claim 1 and 2, characterized in that the crushing container (5) as

Comminution tool has a heating conductor grid (100) which is heated as a cutting firing tool by electrical resistance heating.

25. Apparatus according to claim 24, characterized in that the heating conductor grid (100) consists of mutually parallel heating conductors (1), which are insulated from one another at the crossing points and which make contact in each case at the ends to power connections (20) in a frame (53). are held.

26. Apparatus according to claim 24 and 25, characterized in that the heating conductors (1) are wires or rods which are held laterally displaceably in a longitudinal slot (54) of the frame (53), whereby the mesh size of the heating conductor grid (100) is adjustable is.

27. Apparatus according to one of claims 24 to 26, characterized in that the grid-shaped heating conductor arrangement (100) extends between two parallel contacting rails (57) and their heating conductors (1) are alternately mesh-like in their direction obliquely to the direction of extension of the heating conductor arrangement (100 ) run and are mechanically and / or electrically connected in their mesh points.

28. Device according to one of claims 24 to 27, characterized in that the heat conductor (1) of the heat conductor grid (100) with contact springs (56) in contact rails (57) of the frame (53) is electrically contacted and can be changed in length by springs (58) and lie displaceably in the frame (53).

29. Apparatus according to one of claims 24 to 28, characterized in that the comminution container (5) has a container lower part (51a) which holds a removable collecting container (52) and a container opening (51b) which forms a feed opening (53) for the comminuted material ) and the heating conductor grid (100) with frame (53) is arranged between the two container parts (51a, 51b).