DK155410B

DK155410B - Hauling device for trawl nets for mounting aboard trawlers

Info

Publication number: DK155410B
Application number: DK452482A
Authority: DK
Inventors: Viggo Hellsten
Original assignee: Scansea Shipservice Aps
Priority date: 1982-10-13
Filing date: 1982-10-13
Publication date: 1989-04-10
Also published as: SE8305391L; SE8305391D0; DK452482A; DK155410C; SE456472B

Description

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Opfindelsen angår en trækindretning for trawl til montering på trawlere, bestående af et kasseprofil anbragt på tværs af trawleren ved agterenden og med en inden i kasseprofilet bevægelig vogn, der kan forskydes frem og 5 tilbage i kasseprofilet ved hjælp af en kæde, wire, rem, spindel eller anden trækindretning, og hvor vognen har en ophængningsindretning, der stikker ud gennem en langsgående slids i kasseprofilet for ophængning af en første blok, og hvor de to slæbetrosser til trawlet hver løber 10 omkring en blok anbragt ved rælingen og op omkring henholdsvis den første blok og en anden blok, som også er ophængt og derfra videre ud til trawlet.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a trawler for mounting on trawlers consisting of a box profile positioned across the trawler at the aft end and with a carriage movable within the box profile that can be moved forward and backward in the box profile by means of a chain, wire, strap, spindle or other towing device, wherein the carriage has a suspension device protruding through a longitudinal slot in the box profile for hanging a first block, and the two trawls for the trawl each run 10 about a block disposed at the rails and up respectively about the first block and another block which is also suspended and from there on out to the trawl.

Trawling kan principielt deles op i to former, nemlig bundtrawling og flydetrawling, hvor bundtrawling foreta-15 ges med et enkelt skib, og hvor trawlet er forsynet med trawlskovle til udspiling af trawlmundingen. Flydetraw-ling foretages med to skibe, og trawlet holdes svævende i vandet et sted mellem vandoverfladen og havbunden.In principle, trawling can be divided into two forms, namely bottom trawling and float trawling, where bottom trawling is carried out with a single ship and where the trawl is provided with trawl blades for flushing the trawl mouth. Float trawling is done with two ships and the trawl is kept floating in the water somewhere between the surface of the water and the seabed.

De kendte trækindretninger med en enkelt vogn er udmær-20 kede ved flydetrawling. Her køres vognen, efter at trawlet er sat ud, ind, så den befinder sig over skibets midterlinie. Men når det drejer sig om bundtrawling, har denne kendte trækindretning nogle ulemper.The known single-carriage pulling devices are excellent at float trawling. Here, after the trawl is deployed, the carriage is driven in so that it is above the center line of the ship. But when it comes to bottom trawling, this known draw device has some drawbacks.

Formålet med opfindelsen er at angive en trækindretning 25 af den indledningsvis angivne art, hvor ulemperne med hensyn til bundtrawling undgås. Dette opnås ifølge opfindelsen ved at udforme trækindretningen således, at den anden blok er ophængt i en ekstra vogn, der kan løbe frit i kasseprofi let på den side af den første vogn, 30 der vender længst bort fra blokkene ved rælingen, idet der i vognen er en gennembrydning for fri passage af trækindretningen til den første vogn, og at der ved den ende af kasseprofi let, der vender modsat blokkene ved rælingen, 2The object of the invention is to provide a pulling device 25 of the kind mentioned in the introduction, whereby the disadvantages of bottom trawling are avoided. This is achieved in accordance with the invention by designing the towing device such that the second block is suspended in an additional carriage which can run freely in box-proof light on the side of the first carriage 30 which is furthest away from the blocks by the rail, is a breakthrough for the free passage of the towing device to the first carriage, and that at the end of the box profile, slightly facing the blocks at the rail, 2

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er en udløselig fangindretning til fastholdelse af den anden vogn, når den kommer hen i denne ende. På grund af varpets forløb omkring blokken på skibsdækket placeret ved rælingen og op omkring blokken på den frie vogn, 5 vil denne altid på grund af det skrå træk i varpet presse den frie vogn ind mod den trukne vogn. Når den trukne vogn køres den ene vej, vil den skubbe den frie vogn foran sig, og når den trukne vogn kører modsat, vil det skæve træk fra varpet presse den frie vogn ind mod den 10 trukne, således at de begge to altid følges ad. Ved fly -detrawling føres vognene ud, så de står over skibets længdemidtlinie, og hvis man flydetrawler igennem et længere tidsrum, kan man eventuelt koble vognene sammen som angivet i krav 4. Sammenkobling kan i sin simpleste 15 form foretages med en bolt.is a releasable catching device for retaining the second carriage as it reaches this end. Due to the course of the warp around the block of the ship deck placed by the rail and up around the block of the free carriage, this will always push the free carriage towards the towed car because of the oblique feature of the warp. When the tow carriage is driven one way, it will push the free carriage in front of it, and when the tow carriage runs in the opposite direction, the skewed feature of the warp will push the free carriage towards the 10 tow so that the two are always followed . In flight-trawling, the carriages are brought out so that they are above the longitudinal centerline of the ship, and if you fly-trawl for a longer period, the wagons can possibly be connected as specified in claim 4. Coupling can in its simplest form be made with a bolt.

Som tidligere omtalt benytter man ved bundtrawling trawlskovle til at udspile trawlmundingen. Disse trawlskovle er af anselig størrelse og vægt og frembyder håndteringsmæssige og opbevaringsmæssige vanskeligheder. Disse van-20 skeligheder er løst med den foreliggende opfindelse.As previously mentioned, when using bottom trawling trawl blades are used to play the trawl mouth. These trawl blades are of considerable size and weight and present handling and storage difficulties. These difficulties are solved by the present invention.

• Ved udsætningen af bundtrawlet er trawlskovlene placeret i hver side af trawleren. Fra det forrige træk vil vognene stå klar i hver sin ende af trækindretningen. Når trawlet er kommet i vandet, føres den trukne vogn over 25 til den frie vogn, der løsnes af sit indgreb, og på grund af det tidligere nævnte skrå træk på varpene vil den frie vogn nu følge med, når den trukne vogn føres tilbage og standses over skibets længdeakse. For at kunne se trawlskovlenes stilling i vandet er det vigtigt, 30 at varpene er ført så tæt sammen som overhovedet muligt, og det er således uhensigtsmæssigt at anbringe blokkene adskilt i hver sin ende af kasseprofilet. Skovlenes stilling i vandet kan afledes af varpene. Når trækket er færdigt, og trawlet skal hales ind, skubbes den frie vogn 3• When launching the bottom trawl, the trawl blades are located on each side of the trawler. From the previous move, the carriages will be ready at each end of the towing device. Once the trawl has entered the water, the tow carriage above 25 is taken to the free carriage which is detached from its engagement, and due to the aforementioned oblique pull on the warps, the free carriage will now follow as the tow carriage is returned and stopped over the longitudinal axis of the ship. In order to be able to see the position of the trawl vanes in the water, it is important that the warps are brought as close together as possible at all and thus it is inappropriate to place the blocks separately at each end of the box profile. The position of the blades in the water can be inferred from the warps. When the haul is finished and the trawl needs to be hauled in, the free carriage 3 is pushed

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ved hjælp af den trukne vogn over i siden, hvor den fanges og fastholdes af fangindretningen. Den trukne vogn føres derefter over i den anden side af kasseprofi let, og trawlskovlene kan nu tages ind på hver side af traw-5 leren. Vognene forbliver i denne stilling, indtil trawlet næste gang skal sættes ud.by means of the towed carriage to the side where it is captured and held by the catching device. The tow truck is then easily transferred to the other side of the crate profile and the trawl blades can now be taken in on each side of the trawler. The wagons will remain in this position until the next time the trawl is to be put out.

Fangindretningen kan udføres på mange forskellige måder, men hensigtsmæssigt kan den som angivet i krav 2, udgøres af en på siden af kasseprofilet anbragt hydraulik-10 cylinder tilsluttet trawlerens hydraulikanlæg, hvor stemplet i sin udskudte stilling griber ind i et dertil indrettet hul i den anden vogn (den frie vogn). Denne hydraulikcylinder kan på hensigtsmæssig måde aktiveres fra trawlerens styrehus. Fangindretningen kunne eksem-15 pelvis også udgøres af en eller anden form for palmekanisme .The catching device can be designed in a variety of ways, but conveniently as stated in claim 2, it may consist of a hydraulic cylinder located on the side of the box profile, connected to the hydraulic system of the trawler, in which the piston engages in a projected hole in the other in its extended position. wagon (the free wagon). This hydraulic cylinder can be suitably activated from the trawler's wheelhouse. The capturing device could, for example, also be constituted by some form of palm mechanism.

I tilfælde,· hvor trawleren er forsynet med en netsonde, der omfatter et hydraulisk spil til oprulning af wire og elektrisk kabel til netsonden, er det hensigtsmæssigt 20 at tilslutte hydraulikcylinderen det hydrauliske kredsløb for netsonden, idet spillet for netsonden er placeret i umiddelbar nærhed af trækindretningen. Et andet forhold er, at netsondespillet ikke benyttes samtidig med fangindretningen.In cases where the trawler is provided with a mains probe comprising a hydraulic winch for winding the wire and electric cable to the mains probe, it is convenient to connect the hydraulic cylinder to the mains probe hydraulic circuit as the mains probe is located in the immediate vicinity of the mains. the traction device. Another factor is that the net probe game is not used at the same time as the capture device.

25 I det følgende skal der med henvisning til medfølgende tegning beskrives en udførelsesform for trækindretningen ifølge opfindelsen.In the following, an embodiment of the drawing device according to the invention will be described with reference to the accompanying drawing.

På tegningen viser: fig. 1 længdesnit igennem trækindretningen,In the drawing: FIG. 1 longitudinal section through the pulling device,

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4 fig. 2 et udsnit af fig. 1, der viser de to vogne i trækindretningen i større målestoksforhold , fig. 3 et tværsnit gennem trækindretningens ene en-5 de med fangmekanismen til fastholdelse af den frie vogn, fig. 4 et længdesnit i den samme ende som vist i fig. 3 og fig. 5 et hydraulikdiagram til sondespil og fangme-10 kanisme.4 FIG. 2 shows a section of FIG. 1 showing the two carriages in the towing device in larger scale conditions; FIG. 3 is a cross-section through one end of the towing device with the catch mechanism for retaining the free carriage; FIG. 4 is a longitudinal section at the same end as shown in FIG. 3 and FIG. 5 is a hydraulic diagram for probe play and catch-10 canism.

Fangindretningen omfatter en lukket kassedrager 1, hvor-i der kører en trukket vogn 2 og en fri vogn 3. Den trukne vogn trækkes af en endeløs kæde 4 fastgjort til den ene ende af vognen og ført omkring et trækhjul 5 i den 15 ene ende af trækindretningen, hvor der sidder en gearmotor 6, der ses på fig. 3. Fra trækhjulet 5 går kæden 4 over i den modsatte ende af kassedrageren omkring et omløberhjul 7 og derfra hen til den anden ende af vognen 2, hvor kæden er fastgjort. Vognen 2 kan således be-20 væges frem og tilbage i kassedrageren ved at skifte omløbsretning på trækhjulet 5.The capturing device comprises a closed box carrier 1, in which is driven a towed carriage 2 and a free carriage 3. The towed carriage is pulled by an endless chain 4 attached to one end of the carriage and carried around a tow wheel 5 at one end of the carriage. the traction device on which is mounted a gear motor 6 seen in FIG. 3. From the traction wheel 5, the chain 4 goes to the opposite end of the box carrier around a bypass wheel 7 and thence to the other end of the carriage 2, where the chain is attached. Thus, the carriage 2 can be moved back and forth in the box carrier by changing the direction of rotation of the traction wheel 5.

Begge vogne 2, 3 er lavet af en opsvejst pladekonstruktion med et sæt kørehjul 8 i hver ende som antydet med punkteret linie i fig. 2. For at optage skævtræk i vog-25 nene er disse i hvert hjørne forsynet med en konsol 9, hver forsynet med et vandretliggende hjul 10, der kører på kassedragerens sider. Desuden er de to nærmestsidden-de konsoller på vognene forsynet med et ekstra sæt hjul 11 antydet på fig. 2 med stiplet linie, og som kører 30 mod kassedragerens overside.Both carriages 2, 3 are made of a welded plate structure with a set of drive wheels 8 at each end as indicated by a dotted line in FIG. 2. In order to accommodate warping features in the carts, in each corner these are provided with a bracket 9, each provided with a horizontal wheel 10 running on the sides of the box carrier. In addition, the two nearest-side brackets on the carriages are provided with an additional set of wheels 11 indicated in FIG. 2 with a dotted line running 30 towards the top of the box carrier.

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55

Vognen 3 kan bevæge sig frit i kasseprofilet ved, at der er en gennembrydning for kæden 4, der som tidligere nævnt er fastgjort til vognen 2. Fastgørelsen er foretaget med et par lasker 13 af en sådan størrelse og form, 5 at de passer ind i et par tilsvarende udsparinger i den tilstødende ende af den frie vogn 3. Hvis der herudover ønskes en fast sammenkobling af vognene 2, 3, er de tilstødende vognender 14, 15 forlænget, så de gennem en langsgående slids 16 stikker ud under kasseprofilets unit) derside, hvor de kan sammenkobles med en bolt, idet der er et hul 17 herfor i de forlængede ender. Denne sammenkobling kan som forklaret i beskri velsesindledningen være ønskelig, hvis man ønsker at flydetrawle gennem et længere tidsrum.The carriage 3 can move freely in the box profile by having a breakthrough for the chain 4, which as previously mentioned is attached to the carriage 2. The fastening is made with a pair of lugs 13 of such size and shape that they fit into the a pair of corresponding recesses at the adjacent end of the free carriage 3. In addition, if a fixed coupling of the carriages 2, 3 is desired, the adjacent carriage ends 14, 15 are extended so that they protrude through a longitudinal slot 16 below the box profile unit ( , where they can be coupled to a bolt, having a hole 17 for the extended ends. This interconnection may be desirable, as explained in the description introduction, if one wishes to float through a longer period of time.

15 Til fastholdelse af den frie vogn 3 ved den ene ende af kasseprofilet er der dér en fangmekanisme 18 til at fange og fastholde vognen 3. Fangmekanismen omfatter en laske 19 med et hul 20 fastgjort på enden af vognen 3.There, for holding the free carriage 3 at one end of the box profile, there is a catching mechanism 18 for catching and holding the carriage 3. The catching mechanism comprises a lug 19 with a hole 20 attached to the end of the carriage 3.

Når vognen som vist i fig. 4 er kørt helt ud i enden af 20 kasseprofi let, standses den af et endestop 21 i form af et pladestykke fastsvejst på tværs af spalten 16. I denne stilling går vognens laske 19 ind mellem to pladestykker fastsvejst på undersiden af det tværstillede pladestykke 21. I piadestykkerne 22 er der et hul, der pas-25 ser med hullet 20 i vognen 3. På siden af kasseprofi let er fastgjort en dobbeltvirkende hydraulikcylinder 24 med et stempelhoved 25, der i sin udskudte stilling går ind gennem hullerne 23 og 20 til fastholdelse af vognen 3.When the carriage as shown in FIG. 4 is pushed out completely at the end of 20 box profile, it is stopped by an end stop 21 in the form of a plate piece welded across the slot 16. In this position, the carriage's lug 19 enters between two plate pieces welded to the underside of the transverse plate piece 21. In the piad pieces 22 there is a hole which fits with the hole 20 in the carriage 3. On the side of the box profile, a double-acting hydraulic cylinder 24 with a piston head 25, which in its extended position enters through the holes 23 and 20, is easily secured. of the carriage 3.

30 På tegningens fig. 5 er vist et hydraulikdiagram for et netsondespil, hvor der er benyttet de sædvanlige tegn for hydrauliske komponenter. Olien til den dobbeltvirkende hydraulikcylinder 24 i trækindretningens fangmeka-30 In the drawing FIG. 5, there is shown a hydraulic diagram for a net probe game using the usual characters for hydraulic components. The oil for the double-acting hydraulic cylinder 24 in the drawbar catch

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6 nisme tages hensigtsmæssigt derfra, idet netsondespillet altid vil være placeret umiddelbart bag trækindretningen. Som det fremgår af diagrammet, er den dobbelt-virkende hydraulikcylinder 24 indkoblet over en dobbelt 5 magnetventil, der kan fjernbetjenes, eventuelt inde fra skibets styrehus.6 is conveniently taken therefrom, since the net probe play will always be located immediately behind the pulling device. As can be seen from the diagram, the double-acting hydraulic cylinder 24 is connected via a double-actuated double-acting solenoid valve, optionally from inside the ship's control housing.

Når der trawles, hvad enten det drejer sig om bundtrawling eller flydetrawling, kommer varpene fra et spil, ikke vist på tegningen, og går omkring hver sin blok 26, 10 27 fastgjort til dækket ved skibets ræling. Derfra går varpene op omkring hver sin blok 28, 29 fastgjort til hver sin vogn 2, 3, idet vognenes ene ende 30, 31 er forlænget, så de stikker ned gennem spalten 16. På grund af det skæve træk i varpet 32 vil vognen 3 altid blive pres-15 set op mod vognen 2. Hvis vognen 3 ønskes fastholdt ved kasseprofilets ende, aktiveres vognen 2, der skubber den foran sig op mod endestoppet 21, hvorefter den dobbelt-virkende hydraulikcylinder 24 aktiveres og med stemplet 25 gennem øjet 20 fastholder vognen. Når vognen 3 igen 20 ønskes frigjort, køres vognen 2 op bag denne, hvorefter stemplet 25 trækkes tilbage, og vognen 3 er dermed fri.When trawling, whether for bottom trawling or float trawling, the warps come from a game, not shown in the drawing, and go around each block 26, 10 27 attached to the deck by the ship's railing. From there, the warps go up around each block 28, 29 attached to each carriage 2, 3, with one end of the carriages 30, 31 being extended so that they protrude down through the slot 16. Due to the skewed feature of the warp 32, the carriage 3 always be pressed against the carriage 2. If the carriage 3 is desired to be held at the end of the box profile, the carriage 2 which pushes it upward towards the end stop 21 is activated, after which the double-acting hydraulic cylinder 24 is activated and with the piston 25 through the eye 20 retains cart. When the carriage 3 is again desired to be released, the carriage 2 is driven up behind it, after which the piston 25 is retracted and the carriage 3 is thus free.

Claims

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1. A trawl towing device for mounting on trawlers consisting of a box profile (1) positioned transversely of the trawler at the aft end and with a carriage movable within the box profile (2) which can be slid forward and 1 to 5 baked in the box profile by means of a chain, wire, strap, spindle or other similar pulling device (4), wherein the carriage has a suspension device protruding through a longitudinal slot (16) in the box profile for suspension of a first block, and wherein the two tow bars to the trawl, each runs about a block (26,27) disposed at the rail and up respectively the first block (29) and a second block (28) which is also suspended, and thence further out to the trawl characterized in that the second block is suspended in an additional carriage 15 (3) which can run freely in the box profile (1) on the side of the first carriage (2) facing farthest from the blocks by the rail (26,27), having in the carriage (3) is a breakthrough for free passage of the towing device to the first carriage (2), and there is a releasable catching device (18) for retaining the second carriage (3) as it reaches this end at the end of the case 20 profile (1) facing opposite to the blocks (26,27) at the rails.

Towing device according to claim 1, characterized in that the catching device (18) consists of a hydraulic cylinder (24) located on the side of the box profile (1) connected to the hydraulic system of the trawler and in which the piston in its extended position engages in a correspondingly arranged hole. (20) in the second carriage (3).

A pulling device according to claim 2, wherein the trawler is provided with a net probe comprising a hydraulic winch for winding wire and electric cable to the net probe DK 155410B 8, characterized in that the hydraulic cylinder (24) is connected to the hydraulic circuit for the net probe.

Towing device according to claim 1, characterized in that the first and second carriages (2,3) are arranged to be interconnected.