DD203214A1 - FAELING DEVICE FOR BAEUME - Google Patents

Abstract

The invention relates to a case that can be mounted on a vehicle frontally or temporally and has the task to cut closely behind each other in a row standing trees during the continuous driving movement. Thus, e.g. in the young stock care whole rows of the stocks for the creation of technological corridors are taken out. The attached to a tractor or the like Faelleinrichtung consists of two juxtaposed and tightly over the ground cutting discs whose axes of rotation are vertical and are stored in a frame. The cutting discs are offset by mechanical drives in a gegenlaeufige, facing each other rotary motion and at the same time pressed by the vehicle against the tree, soz that the tree is symmetrical in the wedge between the two cutting discs. The peripheral speed d. Cutting discs is about gleichgrosz the driving speed. To increase the override-increasing devices, e.g. Tongue on its circumference, be provided. The cutting discs touch almost the circumference or are arranged overlapping.

Description

2318184

Title, the invention case facility for trees

Field of application of the invention

The. The invention relates to a dropping device which can be fastened to a vehicle frontally or laterally and for cutting trees during uninterrupted. It is mainly used in forestry in the case of young flocks of stocks planted in heirs.

Character is ils: the known technical solutions

Machines capable of continuously cutting down trees during uninterrupted travel may be equipped with felling tools which actively induce the snowing process or which are activated by the propulsion power of the base traction. Active felling tools are equipped with circular, chain or band saws, in which the danger is that they. When working progress with stones, sand, etc. come into contact and either fast dull or completely tsarstört »The passii to be designated as felling tools are usually so. stated that the required cutting work is distributed over a longer period of time in order to reduce the power requirement of the base vehicle or the necessary thrust forces for this purpose. For this purpose, the cutting blade must be employed obliquely to the direction of travel or have a longitudinal movement, contrary to the driving motion «

-1, DEL 1981 * 9 W

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Characteristic of the latter solutions are the invention descriptions according to US Pat. No. 40,450,488, US Pat. No. 3,809,135, USA Pat. 4044 804 «

The salient part of these solutions lies in the following:

- They have no active cutting elements, therefore the entire cutting work has to be done by the chassis of the vehicle, which has to have a high traction force. As a rule, these felling machines are therefore equipped with chain conveyors »

- The cutting elements take up a lot of space in the direction of travel and thus reduce the maneuverability or, "they must be returned to their original position after each cut and thus do not allow close successive cuts.

Aim of the invention; , -.

The aim of the invention is to eliminate the indicated deficiency of the known technical solutions The new solution is intended to have a less sensitive cutting member, with which trees of very short length and high maneuverability of the felling machine can be cut in close succession without interrupting the driving movement Furthermore, the vehicle should only apply part of the cutting work via its travel motion, while the other part is transmitted by the cutting element itself «

Explanation of the essence of the invention;

- Problem of the invention

The technical reasons for the lack of known solutions are in the nature of their cutting organs. Chain, circular and band saws require a relatively small amount of power, which is applied almost completely by the cutting element itself, so that the vehicle does not need to develop any 'significant traction forces' They are, however

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very sensitive to contact with stones and sand · - However, active cutting blades and impact saws require vehicles with high thrust, lead to large lengths or do not allow the cut dense, one behind the other standing trees, These disadvantages are eliminated by the invention *

Features of the invention

Yor or laterally have a carrier vehicle is one of two juxtaposed cutting discs, which with any mechanical

/ "- drive in opposite directions in slow rotation '

The cutting discs are routed around vertical axes and are located close to the bottom of the tray · They have advantageous features on their sharpened 'scope' for increasing the friction between wood and metal, thus maximizing the amount of cutting work The cutting discs are pressed with the vehicle against the tree to be dropped, whereby the tree must stand in the part formed by the two cutting discs. The cutting discs whose peripheral speed equals or approximately equals the driving speed should penetrate into the tree, whereby an active cutting work of the cutting discs durch.die friction between wood and cutting disc will allow · This friction is the formation of a favorable wedge angle of the cutting discs, by the diameter of the cutting discs and regularities on the circumference of the cutting discs. guaranteed in the required height · The cutting discs, provided that they have been provided with a tooth-shaped circumference, advantageously be arranged overlapping to twice the amount of tooth depth, so that in case of unfavorable coincidence of tooth gaps in any case a complete

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Separation of the tree takes place ».

, embodiment

To illustrate the invention serve, an embodiment, for which represent:

Pig «T Vehicle with cutting device, top view Pig · 2 Cutting device with smooth cutting discs Pig * 3 Cutting device with toothed cutting discs overlapping

In front of the end of a vehicle 1 in the direction of operation, the cutting device 2 is fastened in such a way that, in the working position, it can carry out separating cuts close to the ground. The cutting device 2 essentially consists of a stable frame 3 on which two cutting discs 4 are arranged so as to be rotatable about vertical axes 5 so that they nearly touch each other with their circumference (Pig, 2) or slightly overlap (Pig). 3) · The cutting disks 4 are offset by means not shown in the drawing drive in.gegenläufige rotation in the sense of: specified in Pig .: 1 Drehriehtungspfeile 6 · This drive can be hydrostatic, but it is just as a mechanical drive in embossing, , the / of the existing. PTO, the Pahrzeuges 1. can be brought about *. From the rotational speed of the cutting discs 4 and its diameter results in a circumferential _speed: equal to or approximately equal to the traveling speed of the Pahrzeuges 1 "In order to increase the proportion of the entire cutting operation, - which can be applied by the cutting discs 4 itself, it is convenient to equip the circumference of the cutting discs 4 with tooth-shaped irregularities. A possible form of this. Irregularities represent the teeth 7 in Fig. 3. The degree of overlap 8 of the cutting discs 4 depends on the tooth depth 9 and is substantially twice as large as the tooth depth 9 ·

Claims (3)

231818 Erfindungsarisprüche 1 _β Falling device for trees, mounted on the frame of a vehicle, for non-cutting cutting cut during uninterrupted travel, planted in rows. Trees »characterized by that. two juxtaposed cutting discs (4) are rotatably mounted on a common frame (3) about vertical axes (5) and are rotated by opposing and inward rotation by means of drive means at a peripheral speed equal to or approximately equal to the vehicle speed (1 ), 2 * filling device according to item 1, characterized in that the circumference of the cutting discs (4) almost touch, 3 · Case device according to item 1, characterized in that the circumference of the cutting discs (4) are sharpened and have irregularities in the form of teeth and the like and overlap approximately twice the extent of the irregularities (9) * For this 1 page drawings