DE2704022A1 - Defoliation branch and twig removal machine - has swinging frame with upper rotary cutting blades and lower retractable scraper arms - Google Patents

Abstract

The machine used differentiation for removing branches and twigs, and for cutting the ground grain ready for new planting, is pulled behind a tractor, and operates with a beating and cutting action. At the top of a hood shaped housing is a row of rotary toothed cutting blades (3) with guide sheets (4) between shells. In the spaces between, are collector rods (6) which are retracted by springs (17), independently when an obstacle on the ground is met. These rods slope rearwards and are supported by bearing members. The metal frame is parallel to, and a short distance above the ground in the region of these rods, then slopes upwards to the rear.

Description

7771 Frickingen 2 (Altheim)

Device for picking up and chopping up on the forest floor lying AsthDlz, brushwood usu.

The invention relates to a device for picking up and chopping lying on the Ualdboden Astholz, brushwood, etc., in particular to creation of lanes for new planting within clearings consisting rotatively driven from a transverse to the working direction in a hood-like housing mounted Arbeitsiuelle over the entire working width arranged on it and swinging freely in the direction of rotation, flail-like Arbeitsuierkzeugen.

809831/0385

After it was customary for a long time, branches and brushwood were cut in clear cuts to collect them in piles by machine or by hand and then incinerate them to make room for new plantings today this is generally prohibited for reasons of environmental protection, especially because the ground is beneath such burns to be considered biologically dead for a longer period of time and is therefore not suitable for immediately subsequent replanting. So there is a desire or requirement to machine the branch wood immediately within the clear felling to the extent that that on the one hand there is enough free space for new planting and on the other hand the kindling that forms humus for the forest floor is in turn supplied immediately.

However, it has been shown that, for example, those in agricultural engineering are already Mulchers, which have long been known, are therefore particularly unsuitable for use in forest crops, ueil Art and training of their work tools and, on the other hand, the overall machine structure do not meet the special requirements. This is the result, for example, of mulching what has been left behind on clear-cut felling Astwerks that this is only insufficiently absorbed due to the existing tree stumps, since the entire machine is in a distance to the ground must be driven which is greater than the tree stump height; go closer to get a better shot the ground and the flail runs on a tree stump on, the flywheel mass of the working shaft in the known designs is so low that the shaft speed drops sharply and the work result is considerably worsened as a result. Apart from that, there is damage caused by the breakage of the tools or the result of the tool shaft.

Another disadvantage with the known devices. Is still there see that the branches lying loosely on ..the ground are mostly in front of the Device pushed and this is therefore only fed to an inadequate extent.

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With the DT-OS 2k 32 739 it has already been proposed, inter alia, to provide the work source of such mulchers with a vibrating receiving rake or the like extending over the entire width of the machine. upstream. In this way, an improved crop collection can be achieved, but also only if there are no disturbing tree stumps in the way.

The present invention has therefore set itself the task of To create a device for picking up and chopping up branch wood, with which tree stumps may be present in the working lane an undisturbed crop pick-up and branch wood shredding can be achieved.

According to the invention it is essentially provided that the Schlegel are designed in the manner of a shear knife and run around in several parallel value levels, which are thereby formed Gaps covered with protective or baffle plates and stored within the thus shielded areas, in the direction Pick-up rods pointing to the ground and individually and independently of one another automatically disengageable from this working position are provided.

Through this individually and independently possible, automatic Removing the pick-up rods from their respective working position ensures that even then a proper pick-up of the material will still be possible occurs when tree stumps are within the working lane, as then only one or some of the bars disengage, the others, i.e. those lying to the side of the respective stump, remain in their working position. The device can also be used from be driven from the start with a larger ground clearance, i.e. above the tree stump height.

ü Further details of this invention are in the subclaims as well as the description of the drawing.

809831/0385

? ' 270A022

In the drawings show:

Fig. 1 shows the side view of the device according to the invention in cut and

H ₇ Il

Fig. 2 is a front view from the direction ^M z

The device shown consists of the hood-like housing 1 with the side parts 1a, and the frame-like reinforcements 1b and 1c. In this housing 1, 1a, 1b, 1c, the working shaft 2, consisting of a central tube 2 and the disc bodies 2a with interposed, freely penetrable sword knives 3, is arranged in the bearings 2b , as well as V-belt transmission 22 can be done. In addition, the entire device can be attached to the three-point hydraulic system of a tractor via the trestle 23, 2U _t 25 and supported against the ground 5 via support wheels 20 or also runners.

The flail-like knives 3, which are preferably sawtooth-like and can swing freely through the space between the pairs of disks 2a, 2a, revolve in parallel vertical planes, the spaces "a" between the respective pairs of disks 2a, 2a being protected by means of protective or Baffles * ♦ are covered. These sheets, which at the same time reinforce the housing area between 1 and 1c and can be removable, run in their bottom area ka approximately parallel to the ground 5 and in the front area Ub _t obliquely to it, so they form a run-up slope if the device hits tree stumps; it thus easily slides over this path. In the area Ua, Ub of the guide plates U , recesses 16 are also embedded, through the so-called pick-up rods ß, 6a the links B, 9 with hinge points 10, 11 and further articulation points 12, 13 on the laughter in space 7 via only dash-dotted lines here ^ _t 15 are held in the housing, are pressed outwards by means of the force of the spring 17 and via a not shown

809831/0385

set stop are held approximately in the position shown in FIG.

If these pick-up rods S, 6a - or one of the same - hit an obstacle, for example a tree stump, it can go inside via its links Θ, 9 in the direction "d" individually and independently of the others through the resistance force "z" of the room 7 recede cleanly until it assumes the dot-dash position 6 '; the device thus travels unhindered and the remaining rods 6, 6a remain engaged on the ground. Varteilhafteruieise here the feed path "b" at the tip 6a runs in an arc, so that the device can cover the path "e" unhindered during the pull-in time. In the working position, the parts 6 and Ub also form an obtuse angle with one another, so that in conjunction with the sawtooth-like knives 3 there is a good receiving and cutting effect; The distances "a" and "c" are to be designed in such a way that the cut material can also pass through to the rear unhindered. A deflector 1B by means of a spring 19 a.ä. held causes the creation of a clean aisle for new plantings.

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Claims (1)

Claims Device for picking up and chopping up lying on the forest floor Branches, sticks, etc., especially for the creation of Aisles for PJeu plantings within clear-cuts, consisting of from a transverse to the working direction in a hood-like Housing driven in rotation, bearing shaft with arranged on it over the entire working width and in the direction of rotation free swinging, mallet-like work tools, characterized, that the flails (3) are designed like shear knives and run around in several vertical planes lying parallel to one another, the access rooms (a) formed thereby with protective bolts. Guide plates ( h ) are covered and are provided with pick-up rods (G) which are stored within the areas thus shielded, pointing in the direction of the ground (5) and individually, independently of one another, independently of one another from this working position. 2. Device according to claim 1, characterized, that the pick-up rods (6) inclined towards the ground (5) in the working direction (χ), with bearing elements (B to 13) lying in the interior of the jeuieils shielded housing areas (7) ziijangs- and through recesses (16) in the protective or . Guide plates ( U ) are passed through. · 3. Device according to claims 1 and 2, characterized, 809831/0385 ORIGINAL INSPECTED ~ ^Z ~ 27U4Q22 that as a storage and access guide element by means of a spring (17) loaded Hebsl linkage (a to 13) is used. H. Device according to claims 1 and 2, characterized, that the storage and access guide elements slide, Rallenader Scenery tours are. 5. device: 't according to claims 1 to b,
characterized, that the free end (6a) of the Aufnehmerstsbe (6) with a linear vein curvilinear trajectory (b) to immediately on wire in the area of the assigned guard plate (i ») is deflectable. 6. Device according to one or more of the preceding claims, characterized, that the protection bzui. Baffles (it) in their lowest area (^ a) are approximately parallel to the ground and at least over a partial area (i »b) their front obliquely upwards get lost. 809831/0385 7. Device according to one or more of the preceding claims, characterized, that guide plates (^) and pick-up rods (6) in the working position form an obtuse angle (^) to each other. Θ. Device according to one or more of the preceding claims, characterized, that the pick-up and shredding tools (6 and 3) an element C 1Θ) is arranged downstream for the lateral repulsion of the shredded branch wood. 9. Apparatus according to claim 8, characterized, that the deflector is designed as a wedge-shaped clearing blade (18) and freely oscillating or held by a spring (19) on Machine frame (1, 1a) is articulated. 10. Device according to claims 1 to 9, characterized, that the housing (2), support wheels (20) or runners and towed or carried is connected to a tugboat. 809831/0385