DE202004020859U1 - Mature timber e.g. stub, crushing device, has shredder for wood crushing, and loosening-filter-transport device designed as star filter, where shredder is downstream to chain conveyor which functions as delivery unit - Google Patents

Abstract

The device has a shredder (2) for wood crushing, and a loosening-filter-transport device (5) is designed as a star filter. The shredder is downstream to a chain conveyor which functions as a delivery unit (4). A belt conveyor (6) has one end rotatably fixed under a discharge of the star filter at a vertical axis and another end swing out freely in transverse to a conveying direction.

Description

The The invention relates to a device for comminution with caking contaminated waste wood, preferably from stumps and other lumpy wood waste, such as for example, bar pieces or similar.

Stumps that occur when felling trees are usually waste. In order to use the soil for cultivation or for new plantings, they must be removed. That's how it looks U.S. Patent 2,241,383 to partially comminute them with a milling device by lowering a cutting wheel which is equipped with comminution tools into the ground. In principle, the same is described in AT 324 752. Its construction on a commercial vehicle is a mobility given. After U.S. Patent 3,324,959 For example, a relative plurality of parallel juxtaposed drills are attached to a boom where they are lowered into the ground and put into service where stumps are to be destroyed. This destroys the stump, keeps it in place on a regular basis and mixes it with the soil on site. The wood as raw material is lost.

Other Proposals, For example, according to DE-PS 32 45 373 A1, provide that the stumps first transported to a collection point, there one stationed there Handed over shredder and be crushed by this. Is this technology applied remain attached to the stump adhering earthy ingredients and are mixed under the shredded wood. Will this crushed Wood used in a burning process is the ash attack high.

Generally It is therefore known to wash stumps before shredding.

A solution after the DE-OS 33 02 212 A1 provides that stumps occurring are decomposed in a crusher rotating about a vertical axis, and caking soil is discharged by the initiated centrifugal force over a surrounding sieve-like mantle. Furthermore, the shredded wood is additionally passed through a horizontally arranged sieve drum, in order to remove possibly further earth, which is obtained during crushing.

The suggested solution required by a variety of steps and their Implementation of necessary facilities a considerable effort.

Likewise is in DE 27 51 958 C2 a crushing device described in the stump and other wood parts are crushed in a trough-like training on a shock wave. All accumulating parts are preferably discharged via a blowing device and subjected to a separate selection.

To EP 13 12 425 A2 The use of a star screen is proposed for the cleaning of building rubble.

task The invention is therefore a separate implementation necessary Operations at the cleaning stubbed and shredded to further shredding reduce and at the same time the discharge in heating quality available put.

The Task is solved by a conventional, Shredding suitable for shredding stumps, which usually in terms of size the individual particle to be achieved is known to be adjustable, and with this together as a unit by a transfer unit connected as a star screen running combined release-sieve transport device trained unit is subordinate to the shredder, the dissolving to the discharged single particles of baked earthy ingredients, and if not already done, their removal and screening as well in the further transport of the shredded good serves. shredder and star screen are a preferably mobile assembly forming each other arranged.

By This intense work will yield the dissolved earthy ingredients down from and at the discharge of the star screen this left the exclusive larger and so far from earthy components freed cleaned wood parts.

The Star screen consists of a series of transverse, one uniform Turning waves that interlocked with a projected one conveying plane and the projected perimeter circle of the hubs superior surveys in the sense of impactors designed with defined axial and radial training and which are designed in the sense of rotation so that the abandoned good from the discharge the shredder is transported away. There, where surveys exist are, rejects the next wave with her hub on a recess, so it does not jam the waves can come together. Already in the shredder solved earthy In any case, components already leave the transport route via the transfer unit and others are severed on the star screen and left there the transport level.

An advantageous embodiment provides that between the discharge of the shredder and the star screen, preferably as a chain conveyor configured transfer unit is angordnet, which serves for the direct acquisition and removal of the shredded parts of the shredder and their transfer to the dissolving sieve transport device. Thus, it comes directly to the discharge of the shredder not to jam the shredded parts, but such a jam can be intercepted by the arranged between the discharge of the shredder and the release screen-transport device transfer unit.

A further inventive Preferred variant provides that under the discharge of the star screen about a vertical axis located there with one end so pivotable determined that it swing with its other free end transverse to the conveying direction can, a belt conveyor which is responsible for loading the resulting shredded wood on vehicles and the like preferably mobile storage facilities can serve. It is irrelevant whether the belt conveyor directly with the inventive Facility connected or separately constructed and relative to invention Facility under consideration is set to the discharge parabola.

This Belt conveyors can also be nearby the vertical pivot axis another horizontal pivot axis be designed to be so in vehicle loading with his dropping point different vehicle heights can be adjusted.

The Furnishings are regular before the delivery point to the shredder and connected to this infeed which is sized to provide a feed and feed to the Shredder by means of a suitable loading device, such as a wheel loader possible is. The feeding belt but can also be done this way be that opposite to the entry of the shredder Page a recording device for Stubben stored there in series, so that these training the overall configuration on a mobile unit in particular their own movement according to the progress of work to shred this Stumps or other deposited waste wood.

When The basis of the mobile unit is its low surface pressure and resulting good off-road capability advantageously a crawler track suitable, the remote controlled in a known manner can be.

With Help the inventive Combination, on the one hand dirt components that are already through were solved by the shredder or on the conveyor belt, sieved. On the other hand, still caking dirt components solved. It is possible, preferably stubbly derived small wood almost homogeneous and efficient as well as to provide as a salable product that for different ones Applications, for example Heating purposes, is excellently suitable for low ash. By the mentioned high degree of purity further cleansing measures, such as Wash the material to be removed, stay undone. Is the shredder accordingly? set and the star screen selected, it is possible to have a heating quality in one To provide fraction of 10 to 100 mm.

The Invention will be explained in more detail below using an exemplary embodiment.

In the accompanying drawing shows

1 the basic structure of a device according to the invention and mobile designed.

On a crawler chassis 1 is a shredder 2 educated. This shredder 2 is a conveyor belt 3 upstream, which is designed in terms of its length so that a wheel loader usual order of magnitude of this feed belt 3 can feed laterally. So that wood parts are not lost, are on a cross-section transverse to the longitudinal axis with respect to funnel-like designed Leiteinrichtungen 7 laterally from the feed belt 3 placed on the frame available.

The shredder 2 is as a transfer unit 4 on a combined solvent-sieve transport device 5 zuarbeitend downstream of a chain conveyor. This is an example employed at an angle of about 45 °, so on the one hand all the shredder 2 leaving shredding wood particles are transported and it in the field of discharge of the shredder 2 can not come to a jam. On the other hand, it is the release-sieve transport device 5 for reasons of sieve and construction length as far as possible to the shredder 2 bring about a loss-free transfer to them.

The dissolving-sieve transport device 5 is from the transfer unit 4 working away and trained as a so-called star screen. As a result of this design, the wood particles are mechanically processed on the one hand, so that adhering soiling, which may still be present, is mechanically removed in the sense of knocking off. Due to the selected gap mass, all dirt falls down and can be found under the starscreen on the ground again.

in the stationary Operation would be it is possible here, one further belt conveyor to remove the dissolved To arrange soiling.

The resulting wood particles, with appropriate selection and adjustment of the shredder 2 be present at about 1 cm to 10 cm edge length, weggetrportiert. The star screen is usually carried out slightly rising, so under its discharge to a vertical axis located there with one end so pivotally set a belt conveyor 6 is arranged that this can swing with its other free end transverse to the conveying direction. Near the vertical pivot axis of the belt conveyor 6 is another horizontal pivot axis available, so that it can be adapted to different vehicle heights when vehicle loading the discharge point of the shredded and screened wood.

Of the Belt conveyors is preferably dismantling, so that it is separately transportable in the case of transport of the device.

All assemblies are on the crawler chassis 1 so that different requirements for the mobility of the facility can be fulfilled. This crawler chassis 1 is preferably designed remotely controllable, so that an adjustment of the location of the device is given in accordance with the work progress.

1

crawler track

2

shredder

3

infeed

4

Transfer unit

5

Solvent-mesh conveying device

6

Belt conveyors

7

lateral delineators

Claims (7)

Device for comminuting waste wood contaminated with caking, preferably stumps and other lumpy, contaminated wood waste, in the case of a shredder suitable for wood comminution ( 2 ) and connected to its discharge acting as a release-wire transport device and as a star screen ( 5 ) is trained with the shredder ( 2 ) by a transfer unit ( 4 ) is connected and formed with this forming a structural unit. Device according to Claim 1, in which the transfer unit ( 4 ) is designed as a chain conveyor. Device according to one of claims 1 and 2, in which under the discharge of the star screen a belt conveyor ( 6 ) Is fixed about a vertical axis located there with one end so pivotally that it can swing with its other free end transverse to the conveying direction. Device according to Claim 3, in which the belt conveyor ( 6 ) has a further horizontal pivot axis in the vicinity of the vertical pivot axis. Device according to one of Claims 1 to 4, in which, before the point of application to the shredder ( 2 ) a feed belt ( 3 ) is trained. Device according to Claim 5, in which the feed belt ( 3 ) at the entry of the shredder ( 2 ) opposite side has a receiving device for stored there stumps or the like. Device according to one of claims 1 to 6, wherein the overall configuration as a mobile unit on a crawler track ( 1 ) is arranged.