DE202021001520U1 - Device for pruning hedges and bushes - Google Patents

Abstract

Device (1) for pruning hedges (2) and bushes (2), comprising
- a mobile, ground-guided working machine (3),
- An attachment (4) which has a mast (5), as well as
- At least one processing device (6), the attachment (4) being arranged on a front area (32) of the working machine (3),
wherein the processing device (6) is arranged on the lifting frame (5) of the attachment (4),
wherein the attachment (4) has means for at least adjusting the height of the lifting frame (5) so that the processing device (6) is mounted on the attachment (4) in a height-adjustable manner,
characterized in that
the processing device (6) is formed by at least one cutting device (7) which is suitable for trimming hedges (2) and bushes (2).

Description

The invention relates to a device for pruning hedges and bushes according to the preamble of claim 1.

In order for hedges and shrubs to look appealing, they have to be cut regularly. Traditionally, smaller hedges and shrubs or sculptures made from hedges or shrubs are cut with manual hedge trimmers, for example. This is particularly time-consuming and therefore costly in the case of sculptures and large hedges, which are often shaped like walls and can reach high heights. Mechanical hedge trimmers in the form of a handheld machine are therefore often used for such applications. These hedge trimmers have, for example, an electric drive, such as from the DE 20 2017 103 878 U1 known, or an internal combustion engine, such as from the DE 20 2015 005 740 U1 known to. In other words, these hand machines are operated by users who then guide them along the hedge to cut them. With particularly large or high hedges, these hand tools reach their limits. Highly situated hedge sections can no longer be reached by the user, or can only be reached by means of a ladder, which makes the cut very time-consuming, or by using an extension that is attached to the hedge trimmer, such as from the DE 20 2016 105 276 U1 famous. This is impractical and causes a very complex cutting of the hedge, because the sword at the end of the extension, due to the long lever arm, does not allow a clean and controllable cut.

For this reason there are devices for pruning hedges. Such a device for trimming hedges comprises a mobile, ground-guided work machine, an attachment which has a lifting frame, and at least one processing device. Here, the attachment is arranged on a front area of the work machine. In addition, the processing device is arranged on the mast of the attachment. Furthermore, the attachment has means for at least adjusting the height of the lifting frame, so that the processing device is mounted on the attachment in a height-adjustable manner.

State of the art

In a further development of the hedge trimmers for cutting hedges and bushes, is from the German utility model DE 20 2016 008 065 U1 a device with three hedge trimmers arranged thereon can be seen as known. The device is designed in the form of a mobile frame, this being equipped with two vertically arranged hedge trimmers and one horizontally arranged hedge trimmer. In other words, several hedge trimmers can cut several sides of a hedge at the same time. The mobile frame is mounted on wheels so that it can be moved along the hedge using a hand bracket. It is also provided that the hedge trimmers are adjustable. In this context, it is provided in particular that the vertically arranged hedge trimmers can be adjusted at a distance from one another in such a way that the distance corresponds to a desired width of the hedge. Furthermore, it is provided that the vertically arranged hedge trimmer can be adjusted at an angle relative to a vertical axis of the hedge, so that, for example, conical contours can also be cut. In addition, it is provided that the horizontally arranged hedge trimmer is height-adjustable in order to be able to cut the hedge at a desired height. In order to also be able to cut particularly high hedges, it can alternatively or additionally be provided that the entire frame is adjustable in height. To do this, the wheels are retracted or extended by moving the wheel suspensions.

The disadvantage of the aforementioned prior art is that the device is only suitable for hedges and bushes up to a height of about 1 m without any particular effort. Another disadvantage is that the device is unsuitable for use on uneven terrain and for contour cutting.

Furthermore, vehicles with all-wheel drive and with up to 3-part booms for mowing vegetation and for cutting trees are known from the prior art, for example from Berky GmbH, see www.berky.de. Such vehicles can be equipped with different attachments on the booms, e.g. with a knife bar or a double knife cutting unit or a pruning shears or a tree saw. The cutter bar can be mounted, for example, in the front area of the vehicle, which cuts the vegetation on the ground. A tracking rake collects the clippings from the ground and removes them. The disadvantage of these vehicles is that the boom arranged on the vehicle, with its attachment, has a large swivel range that is undesirable and, moreover, unsuitable for cutting hedges and bushes in the desired formats. The attachments for the boom known from the prior art are not suitable for cutting hedges and bushes.

Furthermore, in the field of mobile and ground-guided vehicles, working machines in the form of mini-excavators, for example from the Wacker Neuson Group, see www.wackerneuson.de, are known. The vehicles from Wacker Neuson differ from the vehicles from Berky not only in that, instead of fuel-powered drives such as diesel engines, a fully electric drive is available for mini excavators, but that the 4-wheel all-wheel drive has been replaced by a rubber chain drive . The outriggers on the mini excavator are relatively identical to the outriggers on the Berky vehicles. Therefore, the outriggers on the mini excavator have the same disadvantages as the outriggers from Berky, which are not suitable for cutting hedges and bushes under given conditions, such as topiary cutting and large areas to be cut flat and parallel.

To eliminate the disadvantages that the boom technology brings with it, a vehicle is proposed as the base vehicle, which is from the DE 10 2011 055 574 B4 is known. Instead of the disadvantageous boom, a lifting frame is used. Masts are known from the prior art for forklifts. The mast is equipped with an attachment with which facades, walls and the like can be cleaned. The attachment therefore consists of a cleaning device, which of course is not suitable for cutting hedges and bushes.

Such devices are already known in various configurations from the prior art. In the aforementioned patent, a device for cleaning facades, walls or similar surfaces is disclosed, which can thus be seen as known. The device comprises a mobile, ground-guided construction machine with a superstructure and an undercarriage, as well as a crawler chassis with an attachment. This includes an extendable mast that is attached to the superstructure of the construction machine. Furthermore, a processing device, comprising an adjusting device and a cleaning device, is arranged on the attachment. The attachment comprises means by means of which the processing device can be vertically adjusted in height. In addition, the adjustment device comprises means by means of which the cleaning device can be adjusted in the horizontal direction. In order to also be able to clean inclined facades, walls or the like, it is provided that the inclination of the lifting frame can be adjusted in such a way that it has the same angle as the surface to be cleaned, for example the facade. In this way, the processing device can always be set parallel to the vertical or inclined surface to be cleaned.

task

It is therefore the object of the present invention to provide a device by means of which the disadvantages of the prior art can be overcome.

solution

The present object is achieved by a device according to claim 1. Advantageous refinements are the subject of the subclaims.

According to the invention, it is provided that the processing device is formed by at least one cutting device which is suitable for trimming hedges and bushes.

In order to be able to cut hedges and bushes by means of the cutting device, it must be moved along the hedges and / or bushes. For this purpose, the mobile, ground-guided work machine with its attachment, which has a lifting frame, is arranged on a surface next to the hedge. In this case, the attachment is preferably facing the hedge or the bush, since this is arranged on the front area of the working machine. The arrangement for aligning the cutting device, for example for the vertical cut, can be made using a variety of setting options. In other words, the device faces the hedge frontally and is oriented vertically. The settings for this are described below, for example in the 3 and 4th shown.

The cutting device is arranged on the lifting frame of the attachment. In order to be able to adjust this height, the attachment has means by means of which the height of the lifting frame can be adjusted. In this context, it can be provided, for example, that the attachment device is height-adjustable by means of at least one hydraulic device, as is customary, for example, with forklifts. In other words, the lifting frame with the cutting device arranged thereon can be adjusted in height, for example by means of the hydraulic device, so that the cutting device can cut it at different heights relative to the hedge. In this case, the lifting frame can preferably be lowered at least substantially in the vicinity of the ground, so that the hedge can also be cut in an area close to the ground. In addition, the mast can be raised in at least an essentially vertical direction so that the hedge can be cut, for example, along its entire height. In other words, the cutting device along the Sides of hedges are moved up and down in such a way that the sides of the hedge can be completely cut in their height direction. This has the advantage that the hedge can be completely cut in just one work step and the operation of the device is therefore particularly simple and effective.

According to a particularly advantageous embodiment, the cutting device comprises an elongated sword with a length of up to 4 m. The sword can be formed by at least two knife carriers which can be moved against one another in an oscillating manner, the knife carriers preferably each carrying a multiplicity of knives. Such a configuration is known, for example, from mechanical hedge trimmers. Swords with mutually oscillating knife carriers have proven to be particularly effective in practice. In this context, for example, individual branches of the hedge are particularly well gripped by the knife carriers that can be moved relative to one another. This has the advantage that the hedge or bush can be cut particularly quickly and cleanly.

Another particularly advantageous embodiment is characterized by a processing device in which two movement devices are integrated. An alignment of the cutting device on the lifting frame can be changed by means of the two movement devices, so that the cutting device can be aligned in particular relative to different hedge sides of the hedge to be cut in each case. Such a configuration is advantageous in two respects. On the one hand, it may be that the ground is not level and the lifting frame and thus the cutting mechanism have to be positioned at an angle to the hedge so that its, for example, at least essentially vertical sides can be cut. On the other hand, it is conceivable that the hedge at least partially has contours that are not vertical. In this context it is conceivable that the hedge has an at least partially circular or triangular cross-section. In other words, the hedge can be bulbous towards the outside, for example. By means of the two movement devices, the alignment of the cutting device on the lifting frame can be adjusted in such a way that it can be moved and cut along the desired contour, which also includes the horizontal cut. In this way, a particularly needs-based and individual operation, for example in parks or in cemeteries, etc., can advantageously be achieved. The movement devices can partly also correspond to the known hydraulic boom arms which, provided with quick-change devices, enable different cutting tools to be changed easily.

Another advantage arises when the device comprises a plurality of cutting devices. In this case, the cutting devices are preferably aligned differently to the lifting frame, so that a plurality of hedge sides of the hedge to be cut can be trimmed by means of the device in one operation. In this context, it is particularly conceivable that the cutting devices are each assigned to the individual hedge sides. In other words, for example, two cutting devices are assigned to the side walls and one cutting device is assigned to an upper side of the hedge. In this way, the hedge can be cut at least essentially in just one operation. This has the advantage that the device can be operated in a particularly time-saving and thus cost-efficient manner.

Another advantage is obtained if the lifting frame is designed to be telescopic, the lifting frame preferably comprising two frame elements which can be moved relative to one another. In order to extend the lifting frame, one frame element is moved relative to the other frame element. In this way, a particularly great height can be achieved by means of the lifting frame, so that particularly high hedges can also be cut. As a result of the telescopic design, the scaffolding elements can also be moved together when not required, so that they can be stored in a particularly space-saving manner. This has the advantage that the device can be used in a particularly versatile and space-saving manner. The space-saving use is supported by a telescopic undercarriage. A telescopic undercarriage enables the width of the undercarriage to be individually adjusted at the respective location. By adapting the chassis width, a minimum passage width of up to 80 cm can be achieved, which makes it possible to drive through doors and gates of small dimensions.

Another particularly advantageous embodiment is characterized in that the attachment has an adjustment device by means of which an inclination of the lifting frame can be adjusted relative to a contact surface of the work machine, so that the lifting frame can be aligned relative to the contact area depending on a setting situation of the work machine, in particular in an angle of 90 ° relative to the contact area. By means of the adjusting device, it is also possible to rotate the mast or the attachment around a swivel joint, which is arranged on the upper carriage, relative to the vertical axis. In practice, it can often happen that the subsurface on which the hedge grows or in the immediate vicinity is not completely even or flat. In particular, it can happen that the The ground is not exactly at an angle of 90 ° relative to the sides of the hedge. Since, depending on the individual taste of a hedge owner, it may be desirable to cut the hedge sides at least essentially exactly vertically, it is advantageous if the inclination of the mast can be adjusted accordingly by means of the adjusting device. In other words, the device can be used in accordance with the individual taste of the hedge owner, regardless of the nature of the subsoil. This has the advantage that the device can be used in a particularly tailored and uncomplicated manner.

Furthermore, it is advantageously provided that the working machine comprises an upper carriage and an undercarriage, the upper carriage carrying the attachment and the undercarriage including a chassis with which the working machine can be driven on a ground. Such a configuration makes it possible to use the work machine in a particularly simple manner. This concerns, on the one hand, a movement of the device along a hedge, which can take place by means of the chassis. Thanks to a cruise control for driving operations, hedges can also be continuously traversed and cut horizontally along the entire length, both on the vertical side of the hedges and on the upper side of the hedges. On the other hand, it is particularly simple to design the upper carriage so that it can be rotated relative to the undercarriage, in order, for example, in this way to set an alignment of the cutting device relative to the hedge. A particularly simple operation of the device can thus advantageously be implemented.

In a further advantageous embodiment, it is provided that a laser measuring device is used when horizontally traversing and cutting hedges, so that an optimal and precise hedge cut can take place. Straight lines when designing hedges are often desirable. To achieve this, a laser measuring device is used, which creates a straight vertical or horizontal line on the hedge. When cutting the hedge, for example, a 100 percent horizontal area can be achieved on the top of a hedge with the help of laser technology. The laser transmitter, which is arranged on a tripod, is set up on the side of the hedge to be cut. A receiver is arranged on the processing device. The measured result is shown on a display in the driver's cab. The operator then has the option of using the adjusting devices to position the cutting device in such a way that the hedge is cut optimally on the laser line when the machine is driven.

According to a further particularly advantageous embodiment, it is provided that the chassis is formed by a crawler chassis or a tire chassis. In practice it has been shown that the crawler track can be used, for example, for wet or swamp-like surfaces, while the tire track is particularly suitable for at least essentially hard and / or dry surfaces. In other words, the chassis can be selected and changed accordingly depending on the nature of the ground on which the hedges and / or bushes are standing. This has the advantage that the device can be used in a particularly versatile and robust manner.

Another advantage arises when the superstructure can be rotated relative to the undercarriage, preferably about a vertical axis of rotation. In other words, the undercarriage can, for example, be moved at least substantially parallel to the hedge sides, while the uppercarriage can be pivoted relative to the undercarriage. In this way, different cross-sections can be realized in the longitudinal direction of the hedge. In this context it is conceivable, for example, that a wave contour can be represented in the longitudinal direction of the hedge, i.e. when one looks at the hedge from above. Advantageously, particularly versatile cutting patterns and contours of the hedges and bushes can thus be realized by means of the device.

Furthermore, a control device is advantageously provided, which is arranged in or on a driver's cab of the work machine, the control device being at least in operative connection with the attachment and / or the cutting device. By means of the control device it is possible, for example, to adjust the height or angle of the cutting device relative to the hedge. It is also conceivable that the cutting device can be switched on or off by means of the control device. This advantageously results in particularly convenient operation of the device.

Embodiments

• 1: eine schematische Perspektivansicht einer erfindungsgemäßen Vorrichtung, wobei deren Bearbeitungseinrichtung absenkt ist;
• 2: wie 1, aber mit ausgefahrener Bearbeitungseinrichtung;
• 3: eine schematische Seitenansicht der Vorrichtung vor einer Hecke gemäß einem ersten Anwendungsbeispiel;
• 4: eine schematische Seitenansicht der Vorrichtung vor der Hecke gemäß einem zweiten Anwendungsbeispiel;
• 5: eine schematische Perspektivansicht der Vorrichtung von vorne; und
• 6: eine schematische Explosionszeichnung der Bearbeitungseinrichtung.

The invention is explained in more detail below using an exemplary embodiment that is shown in the figures. However, the invention is not limited to the specific exemplary embodiment. Instead of the means indicated, means which have the same effect and make up the invention can also be used. It shows:

• 1 : a schematic perspective view of a device according to the invention, the processing device of which is lowered;
• 2 : how 1 , but with the processing device extended;
• 3 : a schematic side view of the device in front of a hedge according to a first application example;
• 4th : a schematic side view of the device in front of the hedge according to a second application example;
• 5 : a schematic perspective view of the device from the front; and
• 6th : a schematic exploded view of the processing device.

the 1 shows a specific embodiment of a device according to the invention 1 in a perspective view with a preferred side view from the right. In principle, it is the device 1 a work machine 3 for gardening and landscaping. The device 1 for pruning hedges 2 and bushes 2 , includes a mobile, ground-guided work machine 3 , an attachment 4th that is a mast 5 has, as well as at least one processing device 6th . Here is the attachment 4th in the front area of the machine 3 arranged. In addition, the processing facility 6th on the mast 5 of the attachment 4th arranged. Furthermore, the attachment 4th Means for at least adjusting the height of the mast 5 so that the processing facility 6th height adjustable on the attachment 4th is stored. Here is the processing device 6th in the form of a cutting device 7th executed.

Furthermore, the processing device 6th a laser receiver 37 on. The laser receiver 37 receives when driving horizontally or vertically and cutting hedges 2 and bushes 2 one, from on the hedge 2 installed laser transmitter 37 , transmitted laser beam, see also 3 , 4th . With the help of laser technology, an optimal and precise hedge cut can be made. Straight lines when designing hedges 2 are often desired. To achieve this, a laser measuring device is used, which draws a straight vertical or horizontal line on the hedge 2 generated. When cutting the hedge 2 can, with the help of laser technology, e.g. a 100 percent horizontal surface on the top 15th a hedge 2 or on the vertical side of the hedge 13th , 14th be achieved. The transmitter arranged on a tripod 38 of the laser, for example, on the side of the hedge to be cut 13th , 14th set up. At least one recipient 37 is at the processing facility 6th arranged. The measured signal is shown as a result on a display in the driver's cab 23 displayed. The operator then has the option of using the control device 22nd the cutter 7th to be positioned so that the hedge is cut when the machine is at a standstill 3 and extending the mast 5 or when driving the machine 3 , the laser line is optimal.

The working machine 3 In the present case, it includes a superstructure 18th and an undercarriage 19th , with the superstructure 18th the attachment 4th carries and the undercarriage 19th a landing gear 20th includes, by means of which the work machine 3 is mobile on a surface. In the illustrated version of the working machine 3 is the superstructure 18th to the undercarriage 19th rotated 90 degrees and the superstructure 19th points with his attachment 4th towards a hedge 2 or a bush 2 , s. 3 u . 4. The working machine can be in this position 3 along a hedge 2 drive and, with the sword in a vertical position 8th a cutting device 7th cutting a hedge on the surface 33 the hedge side 13th , s. 3 , 4th , make. The one in the 1 The reference numerals shown are adopted analogously in the following figures. The same applies to the description of the work machine 3 to that identical from the 1 is taken over because it is in the 2 - 5 around the same embodiment of the working machine 3 acts.

As the 1 - 5 show is the superstructure 18th around the axis of rotation 21 pivotable to the undercarriage 19th arranged. In other words, the superstructure can 18th at least essentially independent of the undercarriage 19th around the axis of rotation 21 be pivoted and thus to the hedge 2 be positioned.

The superstructure 18th also includes a driver's cab 23 , the at least one control device 22nd having. In other words, a user or the driver can from the driver's cab 23 from by means of the control device 22nd the working machine 3 and the processing facility 26th incls. the cutter 7th , serve.

As the 1 - 4th show is the landing gear 20th designed in the form of a crawler track. This includes the chassis 20th two caterpillar drives, see 3 u . 4. where the crawler track can also be replaced or swapped with 4 wheels (not shown).

By means of the device 1 can a hedge 2 such as this one in the 3 and 4th is shown, or shrubs 2 get cut. Here is the hedge 2 wall-like, at least substantially in the form of a cuboid. The Hedge 2 includes at least four hedge sides 13th , 14th , 15th , 36 that are on their surface 33 should be cut. Here form the hedge sides 13th , 14th each side of the hedge 2 while the hedge side 15th a top of the hedge 2 and the hedge side 36 at least one end of the hedge 2 , characterized, being the hedge 2 can also have two end faces. In the synopsis of the 3 and 4th is shown that the hedge side 13th the working machine 3 is facing. Furthermore is the hedge side 14th the working machine 3 turned away. In other words, the hedge sides lie 13th , 14th opposite one another and are, for example, parallel to one another. Here is the hedge 2 particularly high, which is evident from the fact that the sides of the hedge 13th , 14th , in relation to the hedge side 15th , are particularly large. In other words, it is the hedge 2 significantly higher than wide.

Usually hedges grow 2 predominantly vertically upwards. For this reason it is often desirable to have the appropriate hedge sides 13th , 14th to cut essentially vertically, but of course also horizontally. This goes out of the 3 and 4th emerged.

In practice, however, it can happen that the subsurface, which is used as a contact area 17th for the work machine 3 is not completely flat or flat, especially not horizontal. In other words, the work machine is at a standstill 3 diagonally on the hedge 2 inclined to how 3 shows or diagonally from the hedge 2 averse to how 4th indicates.

This fact makes it necessary for the mast 5 with the cutting device arranged thereon 7th relative to the work machine 3 and thus relative to the hedge 2 to be able to pivot. For this, the attachment includes 4th an adjustment device 16 , by means of which an inclination of the mast 5 is adjustable. The adjustment device 16 is presently designed in the form of a hydraulic device, in particular comprising a hydraulic cylinder. In other words, the mast 5 if necessary according to the work machine 3 be pivoted towards if this is on the hedge 2 is inclined to. This is in 3 shown. In addition, the mast 5 accordingly from the work machine 3 be swiveled away if this is off the hedge 2 is inclined away. This is in 4th shown. In other words, the mast can 5 by means of the adjustment device 16 such relative to the work machine 3 and thus relative to the hedge 2 be pivoted, whereby the mast 5 essentially parallel to one of the sides of the hedge 13th , 14th is arranged. Furthermore, there is the adjustment device 16 another function too. The adjustment device 16 has means that allow a rotation of the superstructure 18th arranged attachment 4th make possible. The means can be hydraulic, mechanical, electrical, or a combination of the three types. With the adjustment device 16 So can the attachment 4th with its mast arranged on it 5 in a certain angular range 34 be rotated around the axis of rotation Z, see chap. 1 , 3 , 4th .

The mast 5 of the attachment 4th resembles a forklift truck known from logistics. The lowest, non-extendable single link 31 of the attachment 4th in the present invention, see 3 and 4th , is at the lower end via a bolt connection 29 as a swivel joint 30th on the front part or in the front area 32 of the superstructure 18th movably attached and thus designed to be rotatable. This allows the mast 5 due to the swivel joint 30th in a certain angular range 34 can be rotated in two directions CC (right and left rotation) around the axis of rotation Z, see also 6th , making the attachment 4th with his mast 5 relative to the superstructure 18th can be rotated. With the rotation of the attachment 4th becomes an angular deviation of the vertically aligned mast 5 or the cutting device 7th , to the perpendicular surface 40 of a hedge side to be cut 13th , 14th balanced.

Also a rotation of the superstructure 18th can be rotated in two directions (right and left) around the axis of rotation 21 respectively. With the rotation of the superstructure 18th becomes an angular deviation of the vertically aligned mast 5 or the cutting device 7th , to the perpendicular surface 40 of a hedge side to be cut 13th , 14th balanced. The mast 5 or the cutting device 7th can, due to the rotation of the superstructure 4th , spaced parallel to one of the YY-axis and ZZ-axis coordinates, see 6th , spanned vertical plane B. Especially when the sword 8th the cutter 7th a vertical and parallel position to the hedge side 13th , 14th has taken. So there are at least two options, a vertically positioned or vertically lowered sword 8th a cutting device 7th , to the surface 33 one side of the hedge 13th , 14th , with the help of the adjustment device 16 and the superstructure 18th to align.

In the synopsis of the 1 and 2 it becomes clear that the cutting device 7th height adjustable on the attachment 4th is stored. 1 shows a state in which the cutter 7th is at least substantially completely lowered. In other words, the cutting device is located 7th near the subsoil. 2 shows a state in which the cutter 7th is at least substantially fully extended in height.

The cutting device 7th in the present case includes an elongated sword 8th , that of at least two can be moved against each other in an oscillating manner Knife carriers 9 , 10 is formed, preferably the knife carrier 9 , 10 a variety of knives each 11 wear. This is particularly clear in 5 shown. Such a structure is known, for example, from mechanical hedge trimmers in the form of a hand-held device. In other words, they become the knife carriers 9 , 10 moved in an oscillating manner to one another that the knives arranged thereon move 11 at least temporarily overlap and thus interlocking branches or leaves of the hedge 2 and the bushes 2 cut off. This is typically one of the knife carriers 9 , 10 fixed, while the other knife carrier 9 , 10 is moved back and forth in an oscillating manner. The length of a sword 8th can advantageously have different lengths. The length of the sword 8th a cutting device 7th depends on the height of a hedge 2 or a shrub 2 selected. There is a choice of different sizes of cutting devices 7th attached to the movement device 26th via an existing quick-change system 35 , please refer 6th , can be exchanged easily.

The device also includes 1 in the example shown the 6th two movement devices 12th , 26th , by means of which an alignment of the cutting device 7th on the mast 5 is changeable, so that the cutting device 7th especially relative to different sides of the hedge 13th , 14th , 15th , 36 the hedge to be cut 2 or bushes can be aligned. In the example shown, there is a first movement device 12th suitable for the cutting device 7th around a horizontal axis of rotation 27 to twist. The second movement device 26th is suitable for turning the cutting device around a further horizontal axis of rotation 28 to twist that is perpendicular to the axis of rotation 27 the first movement device 12th is oriented.

The cutting device 7th can, for example, be oriented or be essentially horizontal, around the essentially horizontal upper hedge side 15th , see driven machine 3 in the 3 and 4th to be able to cut. This is also in 2 shown. the 2 shows a device according to the invention in a perspective view 1 as a work machine 3 from the 1 , with a preferred side view on the right, in which the mast 5 is extended to the maximum height, the cutting device 7th occupies a horizontal position with which the top of the hedge side 15th can be cut. A vertical position of the cutter 7th for cutting the side of the hedge 13th , 14th is in the 3 , 4th shown.

The cutting device 7th can therefore by means of one or both movement devices 12th , 26th substantially vertically aligned to the substantially vertical hedge sides 13th , 14th to be able to cut. From the 5 it can be seen that the working machine 3 after a vertical cut of the hedge side 13th , 14th or the horizontal cut of the hedge side 15th at the end of a hedge 2 to move further or to change the location, a vertical face of the hedge side 36 , can be cut. This is made possible by the inventive device 1 enables. The cutting device 7th and / or the processing device 6th and / or the movement device 26th are rotated so that the cutter 7th when extending the mast 5 the front of a hedge side 36 can cut. That is, the superstructure 16 with the attachment 4th still stands with the front area 32 for example the hedge side 13th facing while the cutter 7th along the side of the hedge 36 indicates. This inventive advantage of the device 1 can be used when the end of the hedge 2 or the bush 2 is located on a steeply sloping embankment or wall, for example. This cut on the front of a hedge 2 or a shrub 2 is through the movement device 12th and the processing facility 6th with the associated control device 22nd enables. This is in the 3 until 4th shown. In other words, is the cutter 7th by means of the movement devices 12th , 26th if necessary on one side of the hedge 13th , 14th , 15th customizable so that it can be cut. It is also conceivable that the cutting device 7th , according to a design specification, relative to the hedge 2 or the bush 2 is moved to, for example, certain shapes or patterns in the hedge 2 or the bush 2 to cut.

This also means high-lying sections of the hedge 2 or the bush 2 are reachable, is the mast 5 in the present case designed to be telescopic, preferably the lifting frame 5 two frame elements that can be moved relative to one another 24 , 25th includes. The scaffolding elements 24 , 25th can be from an at least substantially not extended or retracted position, as for example in 1 is shown in an extended position, such as that shown in FIG 2 is shown to be moved. In other words, the mast 5 can be telescoped up or down, so that by means of the cutting device arranged on it 7th The Hedge 2 or the bush 2 can be cut to the required height.

List of reference symbols

1

contraption

2

Hedge / shrub

3

Working machine

4th

Attachment

5

Mast

6th

Machining facility

7th

Cutting device

8th

sword

9

Knife carrier

10

Knife carrier

11

knife

12th

Movement device

13th

Hedge side

14th

Hedge side

15th

Hedge side

16

Adjusting device

17th

Footprint

18th

Superstructure

19th

Undercarriage

20th

landing gear

21

Axis of rotation

22nd

Control device

23

Driver's cab

24

Scaffolding element

25th

Scaffolding element

26th

Movement device

27

Axis of rotation

28

Axis of rotation

29

Bolt connection

30th

Swivel joint

31

Single link

32

Front area

33

surface

34

Angular range

35

Quick change system

36

Hedge side

37

Laser receiver

38

Laser transmitter

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202017103878 U1 [0002]
• DE 202015005740 U1 [0002]
• DE 202016105276 U1 [0002]
• DE 202016008065 U1 [0004]
• DE 102011055574 B4 [0008]

Claims (12)

Device (1) for trimming hedges (2) and bushes (2), comprising - a mobile, ground-guided working machine (3), - an attachment (4) which has a lifting frame (5), and - at least one processing device (6) ), the attachment (4) being arranged on a front area (32) of the working machine (3), the processing device (6) being arranged on the lifting frame (5) of the attachment (4), the attachment (4) means for has at least height adjustment of the mast (5) so that the processing device (6) is mounted on the attachment (4) so that it can be adjusted in height, characterized in that the processing device (6) is formed by at least one cutting device (7) which is used for trimming hedges (2) and bushes (2) is suitable. Device (1) according to Claim 1 , characterized in that the cutting device (7) comprises an elongated sword (8) which is formed by at least two knife carriers (9, 10) which can be moved in an oscillating manner relative to one another, the knife carriers (9, 10) preferably each having a plurality of knives (11 ) wear. Device (1) according to Claim 2 , characterized by a movement device (12) by means of which an alignment of the cutting device (7) on the lifting frame (5) can be changed, so that the cutting device (7) in particular relative to different hedge sides (13, 14, 15, 36) of the respective to cutting hedge (2) or bushes (2) can be aligned. Device (1) according to one of the preceding claims, characterized by a plurality of cutting devices (7), wherein the cutting devices (7) are preferably aligned differently to the lifting frame (5), so that by means of the device (1) a plurality of Hedge sides (13, 14, 15, 36) of the respective hedge (2) or bushes (2) to be cut can be trimmed. Device (1) according to one of the preceding claims, characterized in that the lifting frame (5) is designed to be telescopic, the lifting frame (5) preferably comprising two frame elements (24, 25) which can be moved relative to one another. Device (1) according to one of the preceding claims, characterized in that the attachment (4) has an adjusting device (16) by means of which an inclination of the lifting frame (5) can be adjusted relative to a contact surface (17) of the working machine (3), so that the lifting frame (5) can be aligned relative to the contact surface (17) as a function of a positioning situation of the working machine (3), in particular at an angle of 90 ° relative to the contact surface (17). Device (1) according to Claim 6 , characterized in that the adjusting device (16) has means with which the attachment (4) with its lifting frame (5) can be rotated about an axis of rotation Z. Device (1) according to one of the preceding claims, characterized in that the working machine (3) comprises an upper carriage (18) and an undercarriage (19), the upper carriage (18) carrying the attachment (4) and the undercarriage (19) comprises a chassis (20) with which the work machine (3) can be driven on a ground. Device (1) according to Claim 8 , characterized in that the chassis (20) is formed by a crawler chassis or a tire chassis. Device (1) according to Claim 8 or 9 , characterized in that the upper carriage (18) is rotatable relative to the undercarriage (19), preferably about a vertical axis of rotation (21). Device (1) according to one of the preceding claims, characterized by a control device (22) which is arranged in or on a driver's cab (23) of the working machine (3), the control device (22) at least in operative connection with the attachment (4) and / or the cutting device (7). Device (1) according to one of the preceding claims, characterized in that the processing device (6) is equipped with at least one laser receiver (37).

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