FI97340B - Feed arrangement for timber - Google Patents

Abstract

The object of the invention is a feed arrangement for timber and, in particular, a feed arrangement to be used in a harvester, which arrangement comprises upper feed rolls 1, 2 mounted in the frame of the arrangement, also rotatable lower feed rollers 3, 4. In order to effect an even draw, the upper motors' feed rollers 1, 2 are mechanically interconnected as far as rotation is concerned, whereby the upper feed motors also function as current-distribution motors. <IMAGE>

Description

97340

WOOD FEEDER

The invention relates to a wood feeding device, and in particular to a feeding device for use in a harvester, which comprises upper feed rollers fixedly mounted on the body of the device and rotatable lower feed rollers.

Several different roller solutions are used to feed wood, for example in a harvester or similar work machine. Structures based on Telaket-10 are also known. The common goal of all feed structures is to damage the wood surface as little as possible when harvesting wood. This is especially important for saw supports. Damage generally occurs when one or more feed rollers wobble, i.e., rotate partially empty on the surface of the wood, resulting in a pit. The problem with the feeders is uneven feeding with the feed wheels and uneven rotation of the feed wheels. The shape of the surface of the feed roller and the pressing of the feed roller against the wood also play a role, but they do not solve the above-mentioned basic problem.

The object of the invention is to provide a wood feeding device by means of which the drawbacks associated with current devices are eliminated. In particular, it is an object of the invention to provide a feed device in which a uniform pull on the feed rollers and a uniform rotation of the feed rollers is achieved.

The object of the invention is achieved by a wood feeding device which is characterized by what is stated in the claims. 30

In the feeder according to the invention, the upper feed rollers are me-; mechanically interconnected with respect to rotation, whereby their hydraulic motors also act as flow distribution motors. When the feed rollers of the outboard motors are interconnected, they 35 always rotate simultaneously and at the same speed. The main advantage of the invention is to obtain an even feed for all feed wheels, so that the surface of the trees is not damaged in the 2 97340 feeder. The invention makes it possible to use more gentle coatings on the feed rollers. Likewise, the compression pressure of the feed rollers against the wood can be reduced without compromising the feed capacity.

5

In the following, the invention will be explained with reference to the accompanying drawings, in which FIG. 1 shows a harvester at the feed rollers, FIG. 2 shows a side view of the harvester according to Fig. 1, and FIG.

Figure 1 shows a four-roller harvester in which the pivoting lower feed rollers 3 and 4 and the upper feed rollers 1 and 2 fixedly mounted on the frame form a traction ring around the wood. The lower feed rollers are mounted on the harvester body via pivot pins 8 and 9. The upper feed rollers 1 and 2 are connected to each other by a mechanical switch 5a and 5b. The switch can be, for example, a claw switch or a similar machine element known per se. The pruning wheels included in the harvester are shown with a dotted line.

Fig. 2 shows the harvester according to Fig. 1 from the side so that the lower and upper feed rollers are visible without hydraulic motors. The lower feed rollers 3 and 4 pivot on the pivot pins 8 and 9.

Figure 3 shows a method of connecting hydraulic motors in which, during the feed-forward function, the oil is distributed to the lower roller motors 3 and 4, the same oil then passing through each of the upper roller motors 1 and 2. When canceling, the same thing happens, but in reverse. Since the feed rollers / motors 1 and 2 are mechanically connected, for example by a switch 5a, 5b, they at the same time act as a flow distribution motor, which enables a gentle, non-stick feeding.

3,97340

The invention is not limited to the accompanying embodiments, but many modifications are possible within the scope of the inventive idea defined by the appended claims.

Claims (2)

97340 1. Puun syöttölaite ja erityisesti harvesterissa käytettävä syöttölaite, johon kuuluvat kiinteästi laitteen runkoon 5 asennetut yläsyöttörullat (1, 2) sekä kääntyvät alasyöttö-rolled (3, 4), tunnettu siitä siitäör , jolloin niiden hydraulimoottorit toimivat myös virtauksenja komoottoreina. 2. Patent tivatimuksen 1 mucaine harvesteri, thin-t u siitä, one yälsyyut dry wool (1, 2) on yhdistetty mecanisella cytic germ cell (5a, 5b) toisiinsa. 15 PATENT REQUIREMENTS 1. A tree feeding device and in particular a feeding device for use in a harvester to which the device frame is permanently mounted Upper feeding rollers (1, 2) and reversible lower feeding rolls (3, 4), characterized by that the upper feed rollers (1, 2) are mechanically interconnected with respect to the rotation, their hydraulic motors also functioning as current distribution motors. 25 A harvester according to claim 1, characterized in that the upper feed rollers (1, 2) are joined to a mechanical coupling (5a, 5b). I '«* -» · dl 14 I> 4 * 1