DE1171301B - Method and device for bringing the catch on rear trawlers - Google Patents

Description

Method and device for bringing in the catch on rear tractors The invention relates to a method and the devices required for it for bringing the catch into fishing vessels with net handling at the stern.

In the known method was usually at the stern of the ship arranged a ramp for towing the entire net harness onto the deck. In order to protect the net harness and the catch, this drag must be as small as possible Received slant. This creates the one available for laying the net harness The deck length is significantly shortened, which is a disadvantage, especially with small stern trawlers is. It was also customary to arrange fish entry hatches in front of this tow with fish slides ahead into the fish catchment bunker below deck. The latter resulted an analogous loss of deck length for catch processing in the tween deck, what was also of greater disadvantage with smaller rear trawlers.

It has also been suggested above the towing one To arrange a foldable conveyor belt around a pivot point on the ridge of the tow partly folded aft over the hull to the surface of the water will. There the rear end follows by means of the floating drum rear pulley of sea movement.

A similar conveyor belt on a boom frame has also been proposed, which folds fully aft over the hull. This allows the The towing process can be dispensed with, which is normally the low-resistance form of the ship impaired.

Such collapsible towing belts should be the net harness and the Better to guide the codend on deck, whereas the folding device does not use the codend itself emotional.

It was also proposed to design the lift as a lifting platform, with the front net slipped on and the codend lifted. Through this the complete slip of the codend is saved up to the deck and the catch is spared.

Finally, it was suggested that the forward net harness should extend up to the height of the upper deck and the codend only up to a towing step at tween deck height pull up to the latter already there on a trolley or on conveyor belts empty. The towing lengthened by the step brings you further greater loss of deck length.

None of these methods and devices take into account the requirement small stern trawler, where you are particularly forced, in the net harness upper deck and to achieve the longest possible deck area in the fish processing tween deck. With the exception of the suggestion for the lifting platform, the codend must be towed over can be pulled onto the upper deck or onto a towing step in order to move into one arranged in front of it Input opening to be emptied.

The towing boom that can be folded out over the stern is also due its low robustness in swell and ice, because of high costs and more difficult Maintenance can only be carried out to a limited extent, especially on smaller rear trawlers.

In contrast, the invention proposes a method in which the Steer onto a swiveling table that leads to the upper deck and serves as a towing device is pulled and by swiveling the swivel table forwards into the fish bunker is emptied. The swivel table should be tilted forward at the same time as the open one Closing the stern recess of the ship like a bulwark and high waves derive.

The drawings show an embodiment of the invention in FIG three times.

From b. 1 Slip on the codend, A b b. 2 Tilting the swivel table lift over the horizontal, from b. 3 Emptying the codend into the fish bunker a) with a normal codend, b) with a special version of the codend.

After Ab b. 1 of the cod end is pulled by a Hievtalje to the example, the entire filling Aufschleppenlänge swivel table 1 - so far that the codend approximately flush with the Aufschleppenende. After Ab b. 2, the swivel table 1 tilts about a transverse axis 2, which is supported approximately halfway along its length. A sea flap 3 on the front edge of the swivel table closes the fish inlet hatch 4 until the swivel table is swiveled over the horizontal and the rear part already repels the upwardly flapping waves. A b b. 3 a shows the filling of the codend content in the released fish inlet hatch 4 of the fish bunker 5. In this position of the swivel table 1 , a wave recess 6 is released in the towing niche, which, due to its rounded cross-section, slows the speed of the rising water when tamping, these water masses - supported on abutments 7 - set in a twist and deflects.

A b b. 3 b shows the same situation, but when using a special steert with a front codend opening and holding lines at the codend as well as a holding device 8 attached to the ship or swivel table, e.g. B. in these holding lines when tilting the swivel table 1 cross , possibly pivotable hooks, brackets or runners. This prevents the end of the codend from turning inside out. With a taut Hievtalje and the possibility of repeated swiveling of the swiveling table 1 , this makes it possible to dispense with an aft double post with the Kipptalje.

It is therefore possible with the proposed device to adjust the towing length to slam the usable deck length and the fish bunker already under the front one To arrange part of the lift. Furthermore, the stern is with the tween deck open Completed up to bulwark height. Finally, the heavy double post can Not applicable aft with a suitable holding device for the codend.

Claims (2)

1. A method for introducing the catch on stern trawlers, characterized in that the cod end is pulled to a to the upper deck leading serving as marine railway swiveling table (1) and emptied by pivoting the tilting table (1) forwards in the fish bunker (5) will. 2. Apparatus for carrying out the method according to claim 1, characterized in that the net deck is extended aft by a swiveling table (1) serving as a towing device, which with its front third covers the fish input hatch (4) and the one at the rear edge this fish inlet hatch (4) arranged transversely axis is pivotable and serves in one end position as a towing ramp and in the other end position as an input slide. 3. Apparatus for carrying out the method according to claim 1, characterized in that the fish input hatch (4) under its front edge has a Seeschlagblende (3) which extends so deep that the fish input hatch through to the horizontal position of the swivel table (1) the table and this locking mechanism (3) are closed. 4. Apparatus for performing the method according to claim 1, characterized in that the swivel table (1) in its end position as an input chute with its underside behind the axis of rotation and the parts of the Aufschleppen Unterbaues adjoining the latter forms a wave impact process (6) with a rounded cross-section, the is shaped so that it deflects swirling waves. 5. Apparatus for performing the method according to claim 1, characterized in that holding devices (8) such. B. hooks, brackets or runners are provided at the rear end of the swivel table or fixed to the ship over it, which hold the codend end when the swivel table (1) tilts to enable emptying of the codend to the front. Documents considered: French Patent No. 1267 249; French additional patent specification No. 77 845 to patent specification No. 1260 155.