DE4418211A1 - Mobile chopping harvester - Google Patents

Abstract

The comminution of tree trunks for further use is usually carried out on stationary machines. The process associated with this is complicated. A mobile technical appliance is therefore to be found which comminutes plant raw materials, such as, for example, non-usable residual wood, directly at the harvesting point in an integrated work step. For this purpose, the rollers (9, 10) of a harvester controlled by a base vehicle are designed as elements of a cutting assembly and are provided with a transversely directed feed. The mobile chopping harvester is employed in agriculture and forestry, especially in the care of stands of young trees and in forest protection measures. <IMAGE>

Description

The invention relates to the farmer and forester shaft, especially on the care of young trees of and on forest protection measures. The invention relates a mobile facility with supply lines to egg a basic vehicle, consisting of a turret and an egg base body with clamp arms that enclose the crop, a swivel saw and two drivable rollers for Transport of the crop.

The care of young stocks in forestry has of great importance. The job is to get sick and take out weak trees to healthy trees more light and thus better growth opportunities give.

There are several technologies and a number of techni known machines and equipment.

In the main, all of these technologies are first Line aligned the wood of the felled jung trees in the form of lumber or wood chips one to provide economic reuse.

This is done by separating the Trees felled, transported to a stationary facility and there delimbed and u. U. be debarked. The tribes are transported for further processing and that Branch wood is chopped up.

This process is particularly diverse Transport tasks very labor intensive.  

Various mobile devices have therefore been developed that wraps several work steps in one place Can execute process.

Such a facility is called "Harvester" known. It is as an additional device for a basic driving designed and becomes drive and control technology nically supplied by the base vehicle. The establishment be consists of two pairs of clamp arms for grasping the building mes, a swivel saw for felling the tree, a ge smooth and swiveling pair of rollers for transport of the tree through the establishment and fixed, at the clamp arms designed to separate the Branch material. It also has a measuring device for cutting the trunk to an exact and desired one Measure.

This facility has actually been designed for certain people proven cases in practice.

But it has the major disadvantage that it does not ne can perform shredding work. So that will they do not meet many requirements.

So the proportion of non-usable waste wood is even de in the young trees very high. That means that this predominant part in turn in a complex manner in a separate process in a stationary or mobile shredder must be treated before it as a schnitzel again the forest floor to the fertile speed increase can be supplied.

Due to the special focus on further processing working with tree trunks, this device is not universal sell, e.g. B. for the harvest of renewable raw materials applicable.  

From this situation, the task is to to create a mobile technical facility that vegetable raw materials, such as not used resilient residual wood directly at the place of harvest in one shredded integrated work step.

This object is achieved in that the rollers for Transport of the crop as elements of a cutter kes are formed and both rollers are a drive for have a cross feed.

Appropriate embodiments of the invention result resulting from subclaims 2 to 6.

With the invention, the disadvantages of the prior art Technology eliminated.

The hacker is universally applicable and special suitable for the care of young trees in forests. In are usually particularly advantageous not particularly usable and to be separated out individually Young trees felled, shredded and so on in one process led back to the forest floor.

This procedure is environmentally friendly and extremely low cost.

The invention is illustrated below in one embodiment game are explained in more detail.

The shows

Fig. 1 is a side view of the chopper.

The chopper is mechanical using a crane hanger attached to the extension arm of a base vehicle and via cables on the electrical and hydraulic connections location of the base vehicle connected.

The hackers basically consists of a drivable rotary head 1 and a base body 2 .

In the upper area of the base body 2 there are two stem-enclosing clamping arms 3 and 4 , both of which can be adjusted in both directions to one another according to the principle of a photo diaphragm and form a limited circumferential opening in their open end positions.

At the lower, the clamping arms 3 and 4 opposite end of the chopper, a swivel saw 5 is arranged with a direction of action running transversely to the trunk. The swivel saw 5 is laid out as an electric chain saw. The hydraulic feed of the swivel saw 5 it follows via the on-board hydraulics.

At the height of the swivel saw 5 , the base body 2 is designed as a Wi derlager 6 for the swivel saw 5 .

In the axial direction between the clamping arms 3 and 4 and the swivel saw 5 there are two swivel arms 7 and 8 , which are each mounted on the one hand in the base body 2 and on the other hand each carry an element of a cutting mechanism. The cutting unit consists of two driven rollers 9 and 10 , the throughput direction axially parallel to the position of the trunk and in the direction of the swivel saw 5 . The rollers 9 and 10 are formed in a known manner. So z. B. the roller 9 evenly distributed around the circumference and transverse Schneidmes water 11 and the roller 10 rotating cutting disks 12th

The contour of the cutting knife 11 and the profile formed by the cutting disks 12 are coordinated with one another. Depending on requirements, each roller 9 and 10 can alternately have cutting blades 11 and cutting disks 12 .

Both swivel arms 7 and 8 are adjustable for the purpose of adjusting the Achsab position of both rollers 9 and 10 and have a hydraulic drive.

To harvest z. B. a tree from a young stock, the clamping arms 3 and 4 are first fully opened and the swivel arms 7 and 8 swung as far apart as possible. With these settings, the entire chopper harvest is led to the tree to be separated and brought to the plant with the help of the rotary head 1 . The clamping arms 3 and 4 are acted upon hydraulically in the closing direction and grip the trunk with a holding function. Now the swivel saw 5 is brought into the working position and put into operation. After the sawing process has ended, the swivel saw 5 returns to its starting position. After that or with the sawing process, the cutting unit is switched on and the swivel arms 7 and 8 are hydraulically loaded in the direction of the trunk. The rotating rollers 9 and 10 first move towards each other in a rapid feed and come to rest on the trunk. By further driving the swivel arms 7 and 8 , the feed of the two rollers 9 and 10 and thus the comminution process begins. At the end of the feed, the positions of the rollers 9 and 10 are locked and at the same time the clamping arms 3 and 4 unlocked.

The trunk is now separated into two parts and the lower end of the trunk falls out. The further rotary movement of the two rollers 9 and 10 causes the sawn-off and released from the clamping arms 3 and 4 main trunk with its crown in the cutting unit and zer is reduced. In this phase, the clamp arms 3 and 4 take on a management function instead of the holding function. Controlled depending on the pressure, the passage opening of both clamping arms 3 and 4 adjusts to the actual tree or crown cross section.

The resulting wood chips are immediately sent to the Waldbo the fed again.

The hackers can be in a vertical or horizontal position work.

Claims (6)

1.Mobile chopper with supply lines to a basic vehicle, consisting of a drivable rotary head and a basic body, the basic body above two drivable, crop-enclosing clamps, below a drivable swivel saw and in between two radially movable and oppositely drivable rollers for transporting the crop , characterized in that the Wal zen ( 9 , 10 ) are designed as elements of a cutting unit and both rollers ( 9 , 10 ) have a drive for a transverse feed. 2. Mobile chopper according to claim 1, characterized in that the Wal zen ( 9 , 10 ) on two swivel arms ( 7 , 8 ) are gela on the one hand, which are mounted on the other hand on the base body ( 2 ) and the drive for the feed of the rollers Record ( 9 , 10 ). 3. Mobile chopper according to claims 1 and 2, characterized in that both rollers ( 9 , 10 ) opposite on the one hand have a number of uniformly distributed on the circumference and transverse cutting knives ( 11 ) and on the other hand have running cutting disks ( 12 ). 4. Mobile chopper according to claims 1 to 3, characterized in that the. Cutting knife ( 11 ) and the cutting disks ( 12 ) on both rollers ( 9 , 10 ) are opposite each other. 5. Mobile chopper according to claim 1, characterized in that the clamping arms ( 3 , 4 ) are adjustable to each other according to the principle of a photo diaphragm and have a limited peripheral opening in their outer end position. 6. Mobile chopper according to claims 1 and 5, characterized in that the drive on the clamping arms ( 3 , 4 ) in the opening direction can be controlled depending on the pressure.